[v3,03/14] drm: bridge: analogix_dp: split exynos dp driver to bridge dir

Message ID	1439995802-18210-1-git-send-email-ykk@rock-chips.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <dri-devel-bounces@lists.freedesktop.org> From: Yakir Yang <ykk@rock-chips.com> To: Heiko Stuebner <heiko@sntech.de>, Thierry Reding <treding@nvidia.com>, Jingoo Han <jingoohan1@gmail.com>, Fabio Estevam <fabio.estevam@freescale.com>, Inki Dae <inki.dae@samsung.com>, joe@perches.com, Russell King <rmk+kernel@arm.linux.org.uk> Subject: [PATCH v3 03/14] drm: bridge: analogix_dp: split exynos dp driver to bridge dir Date: Wed, 19 Aug 2015 09:50:02 -0500 Message-Id: <1439995802-18210-1-git-send-email-ykk@rock-chips.com> In-Reply-To: <1439995728-18046-1-git-send-email-ykk@rock-chips.com> References: <1439995728-18046-1-git-send-email-ykk@rock-chips.com> Cc: seanpaul@google.com, dri-devel@lists.freedesktop.org, Andrzej Hajda <a.hajda@samsung.com>, Yakir Yang <ykk@rock-chips.com>, Gustavo Padovan <gustavo.padovan@collabora.co.uk>, linux-samsung-soc@vger.kernel.org, Vincent Palatin <vpalatin@chromium.org>, linux-rockchip@lists.infradead.org, Kishon Vijay Abraham I <kishon@ti.com>, devicetree@vger.kernel.org, Pawel Moll <pawel.moll@arm.com>, Ian Campbell <ijc+devicetree@hellion.org.uk>, dianders@google.com, Rob Herring <robh+dt@kernel.org>, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Kyungmin Park <kyungmin.park@samsung.com>, djkurtz@google.com, Kumar Gala <galak@codeaurora.org>, ajaynumb@gmail.com, Andy Yan <andy.yan@rock-chips.com> Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" <dri-devel-bounces@lists.freedesktop.org>

diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index acef322..c7638b5 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -3,6 +3,11 @@ config DRM_DW_HDMI depends on DRM select DRM_KMS_HELPER +config DRM_ANALOGIX_DP + tristate + depends on DRM + select DRM_KMS_HELPER + config DRM_PTN3460 tristate "PTN3460 DP/LVDS bridge" depends on DRM diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile index 8dfebd9..a7ee559 100644 --- a/drivers/gpu/drm/bridge/Makefile +++ b/drivers/gpu/drm/bridge/Makefile @@ -3,3 +3,4 @@ ccflags-y := -Iinclude/drm obj-$(CONFIG_DRM_PS8622) += ps8622.o obj-$(CONFIG_DRM_PTN3460) += ptn3460.o obj-$(CONFIG_DRM_DW_HDMI) += dw_hdmi.o +obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix_dp_core.o analogix_dp_reg.o diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/bridge/analogix_dp_core.c similarity index 50% rename from drivers/gpu/drm/exynos/exynos_dp_core.c rename to drivers/gpu/drm/bridge/analogix_dp_core.c index 2b87406..6c15e20 100644 --- a/drivers/gpu/drm/exynos/exynos_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix_dp_core.c @@ -1,5 +1,5 @@ /* - * Samsung SoC DP (Display Port) interface driver. + * Analogix Core DP (Display Port) interface driver. * * Copyright (C) 2012 Samsung Electronics Co., Ltd. * Author: Jingoo Han <jg1.han@samsung.com> @@ -18,12 +18,9 @@ #include <linux/interrupt.h> #include <linux/of.h> #include <linux/of_gpio.h> -#include <linux/of_graph.h> #include <linux/gpio.h> #include <linux/component.h> #include <linux/phy/phy.h> -#include <video/of_display_timing.h> -#include <video/of_videomode.h> #include <drm/drmP.h> #include <drm/drm_crtc.h> @@ -31,51 +28,42 @@ #include <drm/drm_atomic_helper.h> #include <drm/drm_panel.h> -#include "exynos_dp_core.h" +#include <drm/bridge/analogix_dp.h> -#define ctx_from_connector(c) container_of(c, struct exynos_dp_device, \ - connector) +#include "analogix_dp_core.h" -static inline struct exynos_drm_crtc *dp_to_crtc(struct exynos_dp_device *dp) -{ - return to_exynos_crtc(dp->encoder->crtc); -} - -static inline struct exynos_dp_device * -display_to_dp(struct exynos_drm_display *d) -{ - return container_of(d, struct exynos_dp_device, display); -} +#define connector_to_dp(c) \ + container_of(c, struct analogix_dp_device, connector) struct bridge_init { struct i2c_client *client; struct device_node *node; }; -static void exynos_dp_init_dp(struct exynos_dp_device *dp) +static void analogix_dp_init_dp(struct analogix_dp_device *dp) { - exynos_dp_reset(dp); + analogix_dp_reset(dp); - exynos_dp_swreset(dp); + analogix_dp_swreset(dp); - exynos_dp_init_analog_param(dp); - exynos_dp_init_interrupt(dp); + analogix_dp_init_analog_param(dp); + analogix_dp_init_interrupt(dp); /* SW defined function Normal operation */ - exynos_dp_enable_sw_function(dp); + analogix_dp_enable_sw_function(dp); - exynos_dp_config_interrupt(dp); - exynos_dp_init_analog_func(dp); + analogix_dp_config_interrupt(dp); + analogix_dp_init_analog_func(dp); - exynos_dp_init_hpd(dp); - exynos_dp_init_aux(dp); + analogix_dp_init_hpd(dp); + analogix_dp_init_aux(dp); } -static int exynos_dp_detect_hpd(struct exynos_dp_device *dp) +static int analogix_dp_detect_hpd(struct analogix_dp_device *dp) { int timeout_loop = 0; - while (exynos_dp_get_plug_in_status(dp) != 0) { + while (analogix_dp_get_plug_in_status(dp) != 0) { timeout_loop++; if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) { dev_err(dp->dev, "failed to get hpd plug status\n"); @@ -87,7 +75,7 @@ static int exynos_dp_detect_hpd(struct exynos_dp_device *dp) return 0; } -static unsigned char exynos_dp_calc_edid_check_sum(unsigned char *edid_data) +static unsigned char analogix_dp_calc_edid_check_sum(unsigned char *edid_data) { int i; unsigned char sum = 0; @@ -98,7 +86,7 @@ static unsigned char exynos_dp_calc_edid_check_sum(unsigned char *edid_data) return sum; } -static int exynos_dp_read_edid(struct exynos_dp_device *dp) +static int analogix_dp_read_edid(struct analogix_dp_device *dp) { unsigned char edid[EDID_BLOCK_LENGTH * 2]; unsigned int extend_block = 0; @@ -113,9 +101,9 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp) */ /* Read Extension Flag, Number of 128-byte EDID extension blocks */ - retval = exynos_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR, - EDID_EXTENSION_FLAG, - &extend_block); + retval = analogix_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR, + EDID_EXTENSION_FLAG, + &extend_block); if (retval) return retval; @@ -123,44 +111,44 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp) dev_dbg(dp->dev, "EDID data includes a single extension!\n"); /* Read EDID data */ - retval = exynos_dp_read_bytes_from_i2c( - dp, I2C_EDID_DEVICE_ADDR, - EDID_HEADER_PATTERN, - EDID_BLOCK_LENGTH, - &edid[EDID_HEADER_PATTERN]); + retval = analogix_dp_read_bytes_from_i2c( + dp, I2C_EDID_DEVICE_ADDR, + EDID_HEADER_PATTERN, + EDID_BLOCK_LENGTH, + &edid[EDID_HEADER_PATTERN]); if (retval != 0) { dev_err(dp->dev, "EDID Read failed!\n"); return -EIO; } - sum = exynos_dp_calc_edid_check_sum(edid); + sum = analogix_dp_calc_edid_check_sum(edid); if (sum != 0) { dev_err(dp->dev, "EDID bad checksum!\n"); return -EIO; } /* Read additional EDID data */ - retval = exynos_dp_read_bytes_from_i2c( - dp, I2C_EDID_DEVICE_ADDR, - EDID_BLOCK_LENGTH, - EDID_BLOCK_LENGTH, - &edid[EDID_BLOCK_LENGTH]); + retval = analogix_dp_read_bytes_from_i2c( + dp, I2C_EDID_DEVICE_ADDR, + EDID_BLOCK_LENGTH, + EDID_BLOCK_LENGTH, + &edid[EDID_BLOCK_LENGTH]); if (retval != 0) { dev_err(dp->dev, "EDID Read failed!\n"); return -EIO; } - sum = exynos_dp_calc_edid_check_sum(&edid[EDID_BLOCK_LENGTH]); + sum = analogix_dp_calc_edid_check_sum(&edid[EDID_BLOCK_LENGTH]); if (sum != 0) { dev_err(dp->dev, "EDID bad checksum!\n"); return -EIO; } - exynos_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST, - &test_vector); + analogix_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST, + &test_vector); if (test_vector & DP_TEST_LINK_EDID_READ) { - exynos_dp_write_byte_to_dpcd( + analogix_dp_write_byte_to_dpcd( dp, DP_TEST_EDID_CHECKSUM, edid[EDID_BLOCK_LENGTH + EDID_CHECKSUM]); - exynos_dp_write_byte_to_dpcd( + analogix_dp_write_byte_to_dpcd( dp, DP_TEST_RESPONSE, DP_TEST_EDID_CHECKSUM_WRITE); } @@ -168,26 +156,28 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp) dev_info(dp->dev, "EDID data does not include any extensions.\n"); /* Read EDID data */ - retval = exynos_dp_read_bytes_from_i2c( - dp, I2C_EDID_DEVICE_ADDR, EDID_HEADER_PATTERN, - EDID_BLOCK_LENGTH, &edid[EDID_HEADER_PATTERN]); + retval = analogix_dp_read_bytes_from_i2c( + dp, I2C_EDID_DEVICE_ADDR, + EDID_HEADER_PATTERN, + EDID_BLOCK_LENGTH, + &edid[EDID_HEADER_PATTERN]); if (retval != 0) { dev_err(dp->dev, "EDID Read failed!\n"); return -EIO; } - sum = exynos_dp_calc_edid_check_sum(edid); + sum = analogix_dp_calc_edid_check_sum(edid); if (sum != 0) { dev_err(dp->dev, "EDID bad checksum!\n"); return -EIO; } - exynos_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST, - &test_vector); + analogix_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST, + &test_vector); if (test_vector & DP_TEST_LINK_EDID_READ) { - exynos_dp_write_byte_to_dpcd( + analogix_dp_write_byte_to_dpcd( dp, DP_TEST_EDID_CHECKSUM, edid[EDID_CHECKSUM]); - exynos_dp_write_byte_to_dpcd( + analogix_dp_write_byte_to_dpcd( dp, DP_TEST_RESPONSE, DP_TEST_EDID_CHECKSUM_WRITE); } @@ -197,20 +187,20 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp) return 0; } -static int exynos_dp_handle_edid(struct exynos_dp_device *dp) +static int analogix_dp_handle_edid(struct analogix_dp_device *dp) { u8 buf[12]; int i; int retval; /* Read DPCD DP_DPCD_REV~RECEIVE_PORT1_CAP_1 */ - retval = exynos_dp_read_bytes_from_dpcd(dp, DP_DPCD_REV, 12, buf); + retval = analogix_dp_read_bytes_from_dpcd(dp, DP_DPCD_REV, 12, buf); if (retval) return retval; /* Read EDID */ for (i = 0; i < 3; i++) { - retval = exynos_dp_read_edid(dp); + retval = analogix_dp_read_edid(dp); if (!retval) break; } @@ -218,74 +208,76 @@ static int exynos_dp_handle_edid(struct exynos_dp_device *dp) return retval; } -static void exynos_dp_enable_rx_to_enhanced_mode(struct exynos_dp_device *dp, - bool enable) +static void +analogix_dp_enable_rx_to_enhanced_mode(struct analogix_dp_device *dp, + bool enable) { u8 data; - exynos_dp_read_byte_from_dpcd(dp, DP_LANE_COUNT_SET, &data); + analogix_dp_read_byte_from_dpcd(dp, DP_LANE_COUNT_SET, &data); if (enable) - exynos_dp_write_byte_to_dpcd( + analogix_dp_write_byte_to_dpcd( dp, DP_LANE_COUNT_SET, DP_LANE_COUNT_ENHANCED_FRAME_EN | DPCD_LANE_COUNT_SET(data)); else - exynos_dp_write_byte_to_dpcd( + analogix_dp_write_byte_to_dpcd( dp, DP_LANE_COUNT_SET, DPCD_LANE_COUNT_SET(data)); } -static int exynos_dp_is_enhanced_mode_available(struct exynos_dp_device *dp) +static int analogix_dp_is_enhanced_mode_available(struct analogix_dp_device *dp) { u8 data; int retval; - exynos_dp_read_byte_from_dpcd(dp, DP_MAX_LANE_COUNT, &data); + analogix_dp_read_byte_from_dpcd(dp, DP_MAX_LANE_COUNT, &data); retval = DPCD_ENHANCED_FRAME_CAP(data); return retval; } -static void exynos_dp_set_enhanced_mode(struct exynos_dp_device *dp) +static void analogix_dp_set_enhanced_mode(struct analogix_dp_device *dp) { u8 data; - data = exynos_dp_is_enhanced_mode_available(dp); - exynos_dp_enable_rx_to_enhanced_mode(dp, data); - exynos_dp_enable_enhanced_mode(dp, data); + data = analogix_dp_is_enhanced_mode_available(dp); + analogix_dp_enable_rx_to_enhanced_mode(dp, data); + analogix_dp_enable_enhanced_mode(dp, data); } -static void exynos_dp_training_pattern_dis(struct exynos_dp_device *dp) +static void analogix_dp_training_pattern_dis(struct analogix_dp_device *dp) { - exynos_dp_set_training_pattern(dp, DP_NONE); + analogix_dp_set_training_pattern(dp, DP_NONE); - exynos_dp_write_byte_to_dpcd(dp, DP_TRAINING_PATTERN_SET, - DP_TRAINING_PATTERN_DISABLE); + analogix_dp_write_byte_to_dpcd(dp, DP_TRAINING_PATTERN_SET, + DP_TRAINING_PATTERN_DISABLE); } -static void exynos_dp_set_lane_lane_pre_emphasis(struct exynos_dp_device *dp, - int pre_emphasis, int lane) +static void +analogix_dp_set_lane_lane_pre_emphasis(struct analogix_dp_device *dp, + int pre_emphasis, int lane) { switch (lane) { case 0: - exynos_dp_set_lane0_pre_emphasis(dp, pre_emphasis); + analogix_dp_set_lane0_pre_emphasis(dp, pre_emphasis); break; case 1: - exynos_dp_set_lane1_pre_emphasis(dp, pre_emphasis); + analogix_dp_set_lane1_pre_emphasis(dp, pre_emphasis); break; case 2: - exynos_dp_set_lane2_pre_emphasis(dp, pre_emphasis); + analogix_dp_set_lane2_pre_emphasis(dp, pre_emphasis); break; case 3: - exynos_dp_set_lane3_pre_emphasis(dp, pre_emphasis); + analogix_dp_set_lane3_pre_emphasis(dp, pre_emphasis); break; } } -static int exynos_dp_link_start(struct exynos_dp_device *dp) +static int analogix_dp_link_start(struct analogix_dp_device *dp) { u8 buf[4]; int lane, lane_count, pll_tries, retval; @@ -299,24 +291,24 @@ static int exynos_dp_link_start(struct exynos_dp_device *dp) dp->link_train.cr_loop[lane] = 0; /* Set link rate and count as you want to establish*/ - exynos_dp_set_link_bandwidth(dp, dp->link_train.link_rate); - exynos_dp_set_lane_count(dp, dp->link_train.lane_count); + analogix_dp_set_link_bandwidth(dp, dp->link_train.link_rate); + analogix_dp_set_lane_count(dp, dp->link_train.lane_count); /* Setup RX configuration */ buf[0] = dp->link_train.link_rate; buf[1] = dp->link_train.lane_count; - retval = exynos_dp_write_bytes_to_dpcd(dp, DP_LINK_BW_SET, 2, buf); + retval = analogix_dp_write_bytes_to_dpcd(dp, DP_LINK_BW_SET, 2, buf); if (retval) return retval; /* Set TX pre-emphasis to minimum */ for (lane = 0; lane < lane_count; lane++) - exynos_dp_set_lane_lane_pre_emphasis(dp, PRE_EMPHASIS_LEVEL_0, - lane); + analogix_dp_set_lane_lane_pre_emphasis( + dp, PRE_EMPHASIS_LEVEL_0, lane); /* Wait for PLL lock */ pll_tries = 0; - while (exynos_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) { + while (analogix_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) { if (pll_tries == DP_TIMEOUT_LOOP_COUNT) { dev_err(dp->dev, "Wait for PLL lock timed out\n"); return -ETIMEDOUT; @@ -327,12 +319,12 @@ static int exynos_dp_link_start(struct exynos_dp_device *dp) } /* Set training pattern 1 */ - exynos_dp_set_training_pattern(dp, TRAINING_PTN1); + analogix_dp_set_training_pattern(dp, TRAINING_PTN1); /* Set RX training pattern */ - retval = exynos_dp_write_byte_to_dpcd(dp, DP_TRAINING_PATTERN_SET, - DP_LINK_SCRAMBLING_DISABLE | - DP_TRAINING_PATTERN_1); + retval = analogix_dp_write_byte_to_dpcd(dp, DP_TRAINING_PATTERN_SET, + DP_LINK_SCRAMBLING_DISABLE | + DP_TRAINING_PATTERN_1); if (retval) return retval; @@ -340,13 +332,13 @@ static int exynos_dp_link_start(struct exynos_dp_device *dp) buf[lane] = DP_TRAIN_PRE_EMPH_LEVEL_0 | DP_TRAIN_VOLTAGE_SWING_LEVEL_0; - retval = exynos_dp_write_bytes_to_dpcd(dp, DP_TRAINING_LANE0_SET, - lane_count, buf); + retval = analogix_dp_write_bytes_to_dpcd(dp, DP_TRAINING_LANE0_SET, + lane_count, buf); return retval; } -static unsigned char exynos_dp_get_lane_status(u8 link_status[2], int lane) +static unsigned char analogix_dp_get_lane_status(u8 link_status[2], int lane) { int shift = (lane & 1) * 4; u8 link_value = link_status[lane >> 1]; @@ -354,21 +346,21 @@ static unsigned char exynos_dp_get_lane_status(u8 link_status[2], int lane) return (link_value >> shift) & 0xf; } -static int exynos_dp_clock_recovery_ok(u8 link_status[2], int lane_count) +static int analogix_dp_clock_recovery_ok(u8 link_status[2], int lane_count) { int lane; u8 lane_status; for (lane = 0; lane < lane_count; lane++) { - lane_status = exynos_dp_get_lane_status(link_status, lane); + lane_status = analogix_dp_get_lane_status(link_status, lane); if ((lane_status & DP_LANE_CR_DONE) == 0) return -EINVAL; } return 0; } -static int exynos_dp_channel_eq_ok(u8 link_status[2], u8 link_align, - int lane_count) +static int analogix_dp_channel_eq_ok(u8 link_status[2], u8 link_align, + int lane_count) { int lane; u8 lane_status; @@ -377,7 +369,7 @@ static int exynos_dp_channel_eq_ok(u8 link_status[2], u8 link_align, return -EINVAL; for (lane = 0; lane < lane_count; lane++) { - lane_status = exynos_dp_get_lane_status(link_status, lane); + lane_status = analogix_dp_get_lane_status(link_status, lane); lane_status &= DP_CHANNEL_EQ_BITS; if (lane_status != DP_CHANNEL_EQ_BITS) return -EINVAL; @@ -386,8 +378,8 @@ static int exynos_dp_channel_eq_ok(u8 link_status[2], u8 link_align, return 0; } -static unsigned char exynos_dp_get_adjust_request_voltage(u8 adjust_request[2], - int lane) +static unsigned char +analogix_dp_get_adjust_request_voltage(u8 adjust_request[2], int lane) { int shift = (lane & 1) * 4; u8 link_value = adjust_request[lane >> 1]; @@ -395,7 +387,7 @@ static unsigned char exynos_dp_get_adjust_request_voltage(u8 adjust_request[2], return (link_value >> shift) & 0x3; } -static unsigned char exynos_dp_get_adjust_request_pre_emphasis( +static unsigned char analogix_dp_get_adjust_request_pre_emphasis( u8 adjust_request[2], int lane) { @@ -405,45 +397,45 @@ static unsigned char exynos_dp_get_adjust_request_pre_emphasis( return ((link_value >> shift) & 0xc) >> 2; } -static void exynos_dp_set_lane_link_training(struct exynos_dp_device *dp, - u8 training_lane_set, int lane) +static void analogix_dp_set_lane_link_training(struct analogix_dp_device *dp, + u8 training_lane_set, int lane) { switch (lane) { case 0: - exynos_dp_set_lane0_link_training(dp, training_lane_set); + analogix_dp_set_lane0_link_training(dp, training_lane_set); break; case 1: - exynos_dp_set_lane1_link_training(dp, training_lane_set); + analogix_dp_set_lane1_link_training(dp, training_lane_set); break; case 2: - exynos_dp_set_lane2_link_training(dp, training_lane_set); + analogix_dp_set_lane2_link_training(dp, training_lane_set); break; case 3: - exynos_dp_set_lane3_link_training(dp, training_lane_set); + analogix_dp_set_lane3_link_training(dp, training_lane_set); break; } } -static unsigned int exynos_dp_get_lane_link_training( - struct exynos_dp_device *dp, +static unsigned int analogix_dp_get_lane_link_training( + struct analogix_dp_device *dp, int lane) { u32 reg; switch (lane) { case 0: - reg = exynos_dp_get_lane0_link_training(dp); + reg = analogix_dp_get_lane0_link_training(dp); break; case 1: - reg = exynos_dp_get_lane1_link_training(dp); + reg = analogix_dp_get_lane1_link_training(dp); break; case 2: - reg = exynos_dp_get_lane2_link_training(dp); + reg = analogix_dp_get_lane2_link_training(dp); break; case 3: - reg = exynos_dp_get_lane3_link_training(dp); + reg = analogix_dp_get_lane3_link_training(dp); break; default: WARN_ON(1); @@ -453,25 +445,25 @@ static unsigned int exynos_dp_get_lane_link_training( return reg; } -static void exynos_dp_reduce_link_rate(struct exynos_dp_device *dp) +static void analogix_dp_reduce_link_rate(struct analogix_dp_device *dp) { - exynos_dp_training_pattern_dis(dp); - exynos_dp_set_enhanced_mode(dp); + analogix_dp_training_pattern_dis(dp); + analogix_dp_set_enhanced_mode(dp); dp->link_train.lt_state = FAILED; } -static void exynos_dp_get_adjust_training_lane(struct exynos_dp_device *dp, - u8 adjust_request[2]) +static void analogix_dp_get_adjust_training_lane(struct analogix_dp_device *dp, + u8 adjust_request[2]) { int lane, lane_count; u8 voltage_swing, pre_emphasis, training_lane; lane_count = dp->link_train.lane_count; for (lane = 0; lane < lane_count; lane++) { - voltage_swing = exynos_dp_get_adjust_request_voltage( + voltage_swing = analogix_dp_get_adjust_request_voltage( adjust_request, lane); - pre_emphasis = exynos_dp_get_adjust_request_pre_emphasis( + pre_emphasis = analogix_dp_get_adjust_request_pre_emphasis( adjust_request, lane); training_lane = DPCD_VOLTAGE_SWING_SET(voltage_swing) | DPCD_PRE_EMPHASIS_SET(pre_emphasis); @@ -485,7 +477,7 @@ static void exynos_dp_get_adjust_training_lane(struct exynos_dp_device *dp, } } -static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp) +static int analogix_dp_process_clock_recovery(struct analogix_dp_device *dp) { int lane, lane_count, retval; u8 voltage_swing, pre_emphasis, training_lane; @@ -495,24 +487,24 @@ static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp) lane_count = dp->link_train.lane_count; - retval = exynos_dp_read_bytes_from_dpcd(dp, DP_LANE0_1_STATUS, - 2, link_status); + retval = analogix_dp_read_bytes_from_dpcd( + dp, DP_LANE0_1_STATUS, 2, link_status); if (retval) return retval; - retval = exynos_dp_read_bytes_from_dpcd(dp, DP_ADJUST_REQUEST_LANE0_1, - 2, adjust_request); + retval = analogix_dp_read_bytes_from_dpcd( + dp, DP_ADJUST_REQUEST_LANE0_1, 2, adjust_request); if (retval) return retval; - if (exynos_dp_clock_recovery_ok(link_status, lane_count) == 0) { + if (analogix_dp_clock_recovery_ok(link_status, lane_count) == 0) { /* set training pattern 2 for EQ */ - exynos_dp_set_training_pattern(dp, TRAINING_PTN2); + analogix_dp_set_training_pattern(dp, TRAINING_PTN2); - retval = exynos_dp_write_byte_to_dpcd( - dp, DP_TRAINING_PATTERN_SET, - DP_LINK_SCRAMBLING_DISABLE | - DP_TRAINING_PATTERN_2); + retval = analogix_dp_write_byte_to_dpcd( + dp, DP_TRAINING_PATTERN_SET, + DP_LINK_SCRAMBLING_DISABLE | + DP_TRAINING_PATTERN_2); if (retval) return retval; @@ -520,12 +512,12 @@ static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp) dp->link_train.lt_state = EQUALIZER_TRAINING; } else { for (lane = 0; lane < lane_count; lane++) { - training_lane = exynos_dp_get_lane_link_training( + training_lane = analogix_dp_get_lane_link_training( dp, lane); - voltage_swing = exynos_dp_get_adjust_request_voltage( - adjust_request, lane); - pre_emphasis = exynos_dp_get_adjust_request_pre_emphasis( + voltage_swing = analogix_dp_get_adjust_request_voltage( adjust_request, lane); + pre_emphasis = analogix_dp_get_adjust_request_pre_emphasis( + adjust_request, lane); if (DPCD_VOLTAGE_SWING_GET(training_lane) == voltage_swing && @@ -539,19 +531,19 @@ static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp) dev_err(dp->dev, "CR Max reached (%d,%d,%d)\n", dp->link_train.cr_loop[lane], voltage_swing, pre_emphasis); - exynos_dp_reduce_link_rate(dp); + analogix_dp_reduce_link_rate(dp); return -EIO; } } } - exynos_dp_get_adjust_training_lane(dp, adjust_request); + analogix_dp_get_adjust_training_lane(dp, adjust_request); for (lane = 0; lane < lane_count; lane++) - exynos_dp_set_lane_link_training( + analogix_dp_set_lane_link_training( dp, dp->link_train.training_lane[lane], lane); - retval = exynos_dp_write_bytes_to_dpcd( + retval = analogix_dp_write_bytes_to_dpcd( dp, DP_TRAINING_LANE0_SET, lane_count, dp->link_train.training_lane); if (retval) @@ -560,7 +552,7 @@ static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp) return retval; } -static int exynos_dp_process_equalizer_training(struct exynos_dp_device *dp) +static int analogix_dp_process_equalizer_training(struct analogix_dp_device *dp) { int lane, lane_count, retval; u32 reg; @@ -570,46 +562,46 @@ static int exynos_dp_process_equalizer_training(struct exynos_dp_device *dp) lane_count = dp->link_train.lane_count; - retval = exynos_dp_read_bytes_from_dpcd(dp, DP_LANE0_1_STATUS, - 2, link_status); + retval = analogix_dp_read_bytes_from_dpcd(dp, DP_LANE0_1_STATUS, + 2, link_status); if (retval) return retval; - if (exynos_dp_clock_recovery_ok(link_status, lane_count)) { - exynos_dp_reduce_link_rate(dp); + if (analogix_dp_clock_recovery_ok(link_status, lane_count)) { + analogix_dp_reduce_link_rate(dp); return -EIO; } - retval = exynos_dp_read_bytes_from_dpcd(dp, DP_ADJUST_REQUEST_LANE0_1, - 2, adjust_request); + retval = analogix_dp_read_bytes_from_dpcd(dp, DP_ADJUST_REQUEST_LANE0_1, + 2, adjust_request); if (retval) return retval; - retval = exynos_dp_read_byte_from_dpcd( + retval = analogix_dp_read_byte_from_dpcd( dp, DP_LANE_ALIGN_STATUS_UPDATED, &link_align); if (retval) return retval; - exynos_dp_get_adjust_training_lane(dp, adjust_request); + analogix_dp_get_adjust_training_lane(dp, adjust_request); - if (!exynos_dp_channel_eq_ok(link_status, link_align, lane_count)) { + if (!analogix_dp_channel_eq_ok(link_status, link_align, lane_count)) { /* traing pattern Set to Normal */ - exynos_dp_training_pattern_dis(dp); + analogix_dp_training_pattern_dis(dp); dev_info(dp->dev, "Link Training success!\n"); - exynos_dp_get_link_bandwidth(dp, &reg); + analogix_dp_get_link_bandwidth(dp, &reg); dp->link_train.link_rate = reg; dev_dbg(dp->dev, "final bandwidth = %.2x\n", dp->link_train.link_rate); - exynos_dp_get_lane_count(dp, &reg); + analogix_dp_get_lane_count(dp, &reg); dp->link_train.lane_count = reg; dev_dbg(dp->dev, "final lane count = %.2x\n", dp->link_train.lane_count); /* set enhanced mode if available */ - exynos_dp_set_enhanced_mode(dp); + analogix_dp_set_enhanced_mode(dp); dp->link_train.lt_state = FINISHED; return 0; @@ -620,23 +612,23 @@ static int exynos_dp_process_equalizer_training(struct exynos_dp_device *dp) if (dp->link_train.eq_loop > MAX_EQ_LOOP) { dev_err(dp->dev, "EQ Max loop\n"); - exynos_dp_reduce_link_rate(dp); + analogix_dp_reduce_link_rate(dp); return -EIO; } for (lane = 0; lane < lane_count; lane++) - exynos_dp_set_lane_link_training( + analogix_dp_set_lane_link_training( dp, dp->link_train.training_lane[lane], lane); - retval = exynos_dp_write_bytes_to_dpcd(dp, DP_TRAINING_LANE0_SET, - lane_count, - dp->link_train.training_lane); + retval = analogix_dp_write_bytes_to_dpcd(dp, DP_TRAINING_LANE0_SET, + lane_count, + dp->link_train.training_lane); return retval; } -static void exynos_dp_get_max_rx_bandwidth(struct exynos_dp_device *dp, - u8 *bandwidth) +static void analogix_dp_get_max_rx_bandwidth(struct analogix_dp_device *dp, + u8 *bandwidth) { u8 data; @@ -644,12 +636,12 @@ static void exynos_dp_get_max_rx_bandwidth(struct exynos_dp_device *dp, * For DP rev.1.1, Maximum link rate of Main Link lanes * 0x06 = 1.62 Gbps, 0x0a = 2.7 Gbps */ - exynos_dp_read_byte_from_dpcd(dp, DP_MAX_LINK_RATE, &data); + analogix_dp_read_byte_from_dpcd(dp, DP_MAX_LINK_RATE, &data); *bandwidth = data; } -static void exynos_dp_get_max_rx_lane_count(struct exynos_dp_device *dp, - u8 *lane_count) +static void analogix_dp_get_max_rx_lane_count(struct analogix_dp_device *dp, + u8 *lane_count) { u8 data; @@ -657,23 +649,23 @@ static void exynos_dp_get_max_rx_lane_count(struct exynos_dp_device *dp, * For DP rev.1.1, Maximum number of Main Link lanes * 0x01 = 1 lane, 0x02 = 2 lanes, 0x04 = 4 lanes */ - exynos_dp_read_byte_from_dpcd(dp, DP_MAX_LANE_COUNT, &data); + analogix_dp_read_byte_from_dpcd(dp, DP_MAX_LANE_COUNT, &data); *lane_count = DPCD_MAX_LANE_COUNT(data); } -static void exynos_dp_init_training(struct exynos_dp_device *dp, - enum link_lane_count_type max_lane, - enum link_rate_type max_rate) +static void analogix_dp_init_training(struct analogix_dp_device *dp, + enum link_lane_count_type max_lane, + enum link_rate_type max_rate) { /* * MACRO_RST must be applied after the PLL_LOCK to avoid * the DP inter pair skew issue for at least 10 us */ - exynos_dp_reset_macro(dp); + analogix_dp_reset_macro(dp); /* Initialize by reading RX's DPCD */ - exynos_dp_get_max_rx_bandwidth(dp, &dp->link_train.link_rate); - exynos_dp_get_max_rx_lane_count(dp, &dp->link_train.lane_count); + analogix_dp_get_max_rx_bandwidth(dp, &dp->link_train.link_rate); + analogix_dp_get_max_rx_lane_count(dp, &dp->link_train.lane_count); if ((dp->link_train.link_rate != LINK_RATE_1_62GBPS) && (dp->link_train.link_rate != LINK_RATE_2_70GBPS)) { @@ -695,10 +687,10 @@ static void exynos_dp_init_training(struct exynos_dp_device *dp, dp->link_train.link_rate = max_rate; /* All DP analog module power up */ - exynos_dp_set_analog_power_down(dp, POWER_ALL, 0); + analogix_dp_set_analog_power_down(dp, POWER_ALL, 0); } -static int exynos_dp_sw_link_training(struct exynos_dp_device *dp) +static int analogix_dp_sw_link_training(struct analogix_dp_device *dp) { int retval = 0, training_finished = 0; @@ -708,17 +700,17 @@ static int exynos_dp_sw_link_training(struct exynos_dp_device *dp) while (!retval && !training_finished) { switch (dp->link_train.lt_state) { case START: - retval = exynos_dp_link_start(dp); + retval = analogix_dp_link_start(dp); if (retval) dev_err(dp->dev, "LT link start failed!\n"); break; case CLOCK_RECOVERY: - retval = exynos_dp_process_clock_recovery(dp); + retval = analogix_dp_process_clock_recovery(dp); if (retval) dev_err(dp->dev, "LT CR failed!\n"); break; case EQUALIZER_TRAINING: - retval = exynos_dp_process_equalizer_training(dp); + retval = analogix_dp_process_equalizer_training(dp); if (retval) dev_err(dp->dev, "LT EQ failed!\n"); break; @@ -735,15 +727,15 @@ static int exynos_dp_sw_link_training(struct exynos_dp_device *dp) return retval; } -static int exynos_dp_set_link_train(struct exynos_dp_device *dp, - u32 count, u32 bwtype) +static int analogix_dp_set_link_train(struct analogix_dp_device *dp, + u32 count, u32 bwtype) { int i; int retval; for (i = 0; i < DP_TIMEOUT_LOOP_COUNT; i++) { - exynos_dp_init_training(dp, count, bwtype); - retval = exynos_dp_sw_link_training(dp); + analogix_dp_init_training(dp, count, bwtype); + retval = analogix_dp_sw_link_training(dp); if (retval == 0) break; @@ -753,24 +745,24 @@ static int exynos_dp_set_link_train(struct exynos_dp_device *dp, return retval; } -static int exynos_dp_config_video(struct exynos_dp_device *dp) +static int analogix_dp_config_video(struct analogix_dp_device *dp) { int retval = 0; int timeout_loop = 0; int done_count = 0; - exynos_dp_config_video_slave_mode(dp); + analogix_dp_config_video_slave_mode(dp); - exynos_dp_set_video_color_format(dp); + analogix_dp_set_video_color_format(dp); - if (exynos_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) { + if (analogix_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) { dev_err(dp->dev, "PLL is not locked yet.\n"); return -EINVAL; } for (;;) { timeout_loop++; - if (exynos_dp_is_slave_video_stream_clock_on(dp) == 0) + if (analogix_dp_is_slave_video_stream_clock_on(dp) == 0) break; if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) { dev_err(dp->dev, "Timeout of video streamclk ok\n"); @@ -781,25 +773,25 @@ static int exynos_dp_config_video(struct exynos_dp_device *dp) } /* Set to use the register calculated M/N video */ - exynos_dp_set_video_cr_mn(dp, CALCULATED_M, 0, 0); + analogix_dp_set_video_cr_mn(dp, CALCULATED_M, 0, 0); /* For video bist, Video timing must be generated by register */ - exynos_dp_set_video_timing_mode(dp, VIDEO_TIMING_FROM_CAPTURE); + analogix_dp_set_video_timing_mode(dp, VIDEO_TIMING_FROM_CAPTURE); /* Disable video mute */ - exynos_dp_enable_video_mute(dp, 0); + analogix_dp_enable_video_mute(dp, 0); /* Configure video slave mode */ - exynos_dp_enable_video_master(dp, 0); + analogix_dp_enable_video_master(dp, 0); /* Enable video */ - exynos_dp_start_video(dp); + analogix_dp_start_video(dp); timeout_loop = 0; for (;;) { timeout_loop++; - if (exynos_dp_is_video_stream_on(dp) == 0) { + if (analogix_dp_is_video_stream_on(dp) == 0) { done_count++; if (done_count > 10) break; @@ -820,45 +812,46 @@ static int exynos_dp_config_video(struct exynos_dp_device *dp) return retval; } -static void exynos_dp_enable_scramble(struct exynos_dp_device *dp, bool enable) +static void analogix_dp_enable_scramble(struct analogix_dp_device *dp, + bool enable) { u8 data; if (enable) { - exynos_dp_enable_scrambling(dp); + analogix_dp_enable_scrambling(dp); - exynos_dp_read_byte_from_dpcd(dp, DP_TRAINING_PATTERN_SET, - &data); - exynos_dp_write_byte_to_dpcd( - dp, DP_TRAINING_PATTERN_SET, - (u8)(data & ~DP_LINK_SCRAMBLING_DISABLE)); + analogix_dp_read_byte_from_dpcd( + dp, DP_TRAINING_PATTERN_SET, &data); + analogix_dp_write_byte_to_dpcd( + dp, DP_TRAINING_PATTERN_SET, + (u8)(data & ~DP_LINK_SCRAMBLING_DISABLE)); } else { - exynos_dp_disable_scrambling(dp); + analogix_dp_disable_scrambling(dp); - exynos_dp_read_byte_from_dpcd(dp, DP_TRAINING_PATTERN_SET, - &data); - exynos_dp_write_byte_to_dpcd( + analogix_dp_read_byte_from_dpcd(dp, DP_TRAINING_PATTERN_SET, + &data); + analogix_dp_write_byte_to_dpcd( dp, DP_TRAINING_PATTERN_SET, (u8)(data | DP_LINK_SCRAMBLING_DISABLE)); } } -static irqreturn_t exynos_dp_irq_handler(int irq, void *arg) +static irqreturn_t analogix_dp_irq_handler(int irq, void *arg) { - struct exynos_dp_device *dp = arg; + struct analogix_dp_device *dp = arg; enum dp_irq_type irq_type; - irq_type = exynos_dp_get_irq_type(dp); + irq_type = analogix_dp_get_irq_type(dp); switch (irq_type) { case DP_IRQ_TYPE_HP_CABLE_IN: dev_dbg(dp->dev, "Received irq - cable in\n"); schedule_work(&dp->hotplug_work); - exynos_dp_clear_hotplug_interrupts(dp); + analogix_dp_clear_hotplug_interrupts(dp); break; case DP_IRQ_TYPE_HP_CABLE_OUT: dev_dbg(dp->dev, "Received irq - cable out\n"); - exynos_dp_clear_hotplug_interrupts(dp); + analogix_dp_clear_hotplug_interrupts(dp); break; case DP_IRQ_TYPE_HP_CHANGE: /* @@ -867,7 +860,7 @@ static irqreturn_t exynos_dp_irq_handler(int irq, void *arg) * only handle cable changes. */ dev_dbg(dp->dev, "Received irq - hotplug change; ignoring.\n"); - exynos_dp_clear_hotplug_interrupts(dp); + analogix_dp_clear_hotplug_interrupts(dp); break; default: dev_err(dp->dev, "Received irq - unknown type!\n"); @@ -876,172 +869,155 @@ static irqreturn_t exynos_dp_irq_handler(int irq, void *arg) return IRQ_HANDLED; } -static void exynos_dp_hotplug(struct work_struct *work) +static void analogix_dp_hotplug(struct work_struct *work) { - struct exynos_dp_device *dp; + struct analogix_dp_device *dp; - dp = container_of(work, struct exynos_dp_device, hotplug_work); + dp = container_of(work, struct analogix_dp_device, hotplug_work); if (dp->drm_dev) drm_helper_hpd_irq_event(dp->drm_dev); } -static void exynos_dp_commit(struct exynos_drm_display *display) +static void analogix_dp_commit(struct analogix_dp_device *dp) { - struct exynos_dp_device *dp = display_to_dp(display); int ret; /* Keep the panel disabled while we configure video */ - if (dp->panel) { - if (drm_panel_disable(dp->panel)) + if (dp->plat_data && dp->plat_data->panel) { + if (drm_panel_disable(dp->plat_data->panel)) DRM_ERROR("failed to disable the panel\n"); } - ret = exynos_dp_detect_hpd(dp); + ret = analogix_dp_detect_hpd(dp); if (ret) { /* Cable has been disconnected, we're done */ return; } - ret = exynos_dp_handle_edid(dp); + ret = analogix_dp_handle_edid(dp); if (ret) { dev_err(dp->dev, "unable to handle edid\n"); return; } - ret = exynos_dp_set_link_train(dp, dp->video_info->lane_count, - dp->video_info->link_rate); + ret = analogix_dp_set_link_train(dp, dp->video_info->lane_count, + dp->video_info->link_rate); if (ret) { dev_err(dp->dev, "unable to do link train\n"); return; } - exynos_dp_enable_scramble(dp, 1); - exynos_dp_enable_rx_to_enhanced_mode(dp, 1); - exynos_dp_enable_enhanced_mode(dp, 1); + analogix_dp_enable_scramble(dp, 1); + analogix_dp_enable_rx_to_enhanced_mode(dp, 1); + analogix_dp_enable_enhanced_mode(dp, 1); - exynos_dp_set_lane_count(dp, dp->video_info->lane_count); - exynos_dp_set_link_bandwidth(dp, dp->video_info->link_rate); + analogix_dp_set_lane_count(dp, dp->video_info->lane_count); + analogix_dp_set_link_bandwidth(dp, dp->video_info->link_rate); - exynos_dp_init_video(dp); - ret = exynos_dp_config_video(dp); + analogix_dp_init_video(dp); + ret = analogix_dp_config_video(dp); if (ret) dev_err(dp->dev, "unable to config video\n"); /* Safe to enable the panel now */ - if (dp->panel) { - if (drm_panel_enable(dp->panel)) + if (dp->plat_data && dp->plat_data->panel) { + if (drm_panel_enable(dp->plat_data->panel)) DRM_ERROR("failed to enable the panel\n"); } } -static enum drm_connector_status exynos_dp_detect( +static enum drm_connector_status analogix_dp_detect( struct drm_connector *connector, bool force) { return connector_status_connected; } -static void exynos_dp_connector_destroy(struct drm_connector *connector) +static void analogix_dp_connector_destroy(struct drm_connector *connector) { drm_connector_unregister(connector); drm_connector_cleanup(connector); } -static struct drm_connector_funcs exynos_dp_connector_funcs = { +static struct drm_connector_funcs analogix_dp_connector_funcs = { .dpms = drm_atomic_helper_connector_dpms, .fill_modes = drm_helper_probe_single_connector_modes, - .detect = exynos_dp_detect, - .destroy = exynos_dp_connector_destroy, + .detect = analogix_dp_detect, + .destroy = analogix_dp_connector_destroy, .reset = drm_atomic_helper_connector_reset, .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, }; -static int exynos_dp_get_modes(struct drm_connector *connector) +static int analogix_dp_get_modes(struct drm_connector *connector) { - struct exynos_dp_device *dp = ctx_from_connector(connector); - struct drm_display_mode *mode; + struct analogix_dp_device *dp = connector_to_dp(connector); + struct analogix_dp_plat_data *plat_data = dp->plat_data; + int num_modes = 0; - if (dp->panel) - return drm_panel_get_modes(dp->panel); - - mode = drm_mode_create(connector->dev); - if (!mode) { - DRM_ERROR("failed to create a new display mode.\n"); - return 0; - } + if (plat_data && plat_data->panel) + num_modes += drm_panel_get_modes(plat_data->panel); - drm_display_mode_from_videomode(&dp->priv.vm, mode); - mode->width_mm = dp->priv.width_mm; - mode->height_mm = dp->priv.height_mm; - connector->display_info.width_mm = mode->width_mm; - connector->display_info.height_mm = mode->height_mm; + if (plat_data && plat_data->get_modes) + num_modes += plat_data->get_modes(plat_data, connector); - mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; - drm_mode_set_name(mode); - drm_mode_probed_add(connector, mode); - - return 1; + return num_modes; } -static struct drm_encoder *exynos_dp_best_encoder( +static struct drm_encoder *analogix_dp_best_encoder( struct drm_connector *connector) { - struct exynos_dp_device *dp = ctx_from_connector(connector); + struct analogix_dp_device *dp = connector_to_dp(connector); return dp->encoder; } -static struct drm_connector_helper_funcs exynos_dp_connector_helper_funcs = { - .get_modes = exynos_dp_get_modes, - .best_encoder = exynos_dp_best_encoder, +static struct drm_connector_helper_funcs analogix_dp_connector_helper_funcs = { + .get_modes = analogix_dp_get_modes, + .best_encoder = analogix_dp_best_encoder, }; -static void exynos_dp_phy_init(struct exynos_dp_device *dp) +static void analogix_dp_phy_init(struct analogix_dp_device *dp) { if (dp->phy) phy_power_on(dp->phy); } -static void exynos_dp_phy_exit(struct exynos_dp_device *dp) +static void analogix_dp_phy_exit(struct analogix_dp_device *dp) { if (dp->phy) phy_power_off(dp->phy); } -static void exynos_dp_poweron(struct exynos_dp_device *dp) +static void analogix_dp_poweron(struct analogix_dp_device *dp) { - struct exynos_drm_crtc *crtc = dp_to_crtc(dp); - if (dp->dpms_mode == DRM_MODE_DPMS_ON) return; - if (dp->panel) { - if (drm_panel_prepare(dp->panel)) { + if (dp->plat_data && dp->plat_data->panel) { + if (drm_panel_prepare(dp->plat_data->panel)) { DRM_ERROR("failed to setup the panel\n"); return; } } - if (crtc->ops->clock_enable) - crtc->ops->clock_enable(dp_to_crtc(dp), true); + if (dp->plat_data && dp->plat_data->power_on) + dp->plat_data->power_on(dp->plat_data); clk_prepare_enable(dp->clock); - exynos_dp_phy_init(dp); - exynos_dp_init_dp(dp); + analogix_dp_phy_init(dp); + analogix_dp_init_dp(dp); enable_irq(dp->irq); - exynos_dp_commit(&dp->display); + analogix_dp_commit(dp); } -static void exynos_dp_poweroff(struct exynos_dp_device *dp) +static void analogix_dp_poweroff(struct analogix_dp_device *dp) { - struct exynos_drm_crtc *crtc = dp_to_crtc(dp); - if (dp->dpms_mode != DRM_MODE_DPMS_ON) return; - if (dp->panel) { - if (drm_panel_disable(dp->panel)) { + if (dp->plat_data && dp->plat_data->panel) { + if (drm_panel_disable(dp->plat_data->panel)) { DRM_ERROR("failed to disable the panel\n"); return; } @@ -1049,39 +1025,21 @@ static void exynos_dp_poweroff(struct exynos_dp_device *dp) disable_irq(dp->irq); flush_work(&dp->hotplug_work); - exynos_dp_phy_exit(dp); + analogix_dp_phy_exit(dp); clk_disable_unprepare(dp->clock); - if (crtc->ops->clock_enable) - crtc->ops->clock_enable(dp_to_crtc(dp), false); + if (dp->plat_data && dp->plat_data->power_off) + dp->plat_data->power_off(dp->plat_data); - if (dp->panel) { - if (drm_panel_unprepare(dp->panel)) + if (dp->plat_data && dp->plat_data->panel) { + if (drm_panel_unprepare(dp->plat_data->panel)) DRM_ERROR("failed to turnoff the panel\n"); } } -/* returns the number of bridges attached */ -static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp, - struct drm_encoder *encoder) +static int analogix_dp_bridge_attach(struct drm_bridge *bridge) { - int ret; - - dp->bridge->next = dp->ptn_bridge; - dp->bridge->encoder = encoder; - ret = drm_bridge_attach(encoder->dev, dp->bridge); - if (ret) { - DRM_ERROR("Failed to attach ptn bridge to drm\n"); - return ret; - } - - return 0; -} - -static int exynos_dp_bridge_attach(struct drm_bridge *bridge) -{ - - struct exynos_dp_device *dp = bridge->driver_private; + struct analogix_dp_device *dp = bridge->driver_private; struct drm_encoder *encoder = dp->encoder; struct drm_connector *connector = &dp->connector; int ret; @@ -1093,66 +1051,77 @@ static int exynos_dp_bridge_attach(struct drm_bridge *bridge) encoder->bridge = bridge; - /* Pre-empt DP connector creation if there's a bridge */ - if (dp->ptn_bridge) { - ret = exynos_drm_attach_lcd_bridge(dp, encoder); - if (ret) - return -ENODEV; - } - connector->polled = DRM_CONNECTOR_POLL_HPD; ret = drm_connector_init(dp->drm_dev, connector, - &exynos_dp_connector_funcs, DRM_MODE_CONNECTOR_eDP); + &analogix_dp_connector_funcs, + DRM_MODE_CONNECTOR_eDP); if (ret) { DRM_ERROR("Failed to initialize connector with drm\n"); return ret; } - drm_connector_helper_add(connector, &exynos_dp_connector_helper_funcs); + drm_connector_helper_add(connector, + &analogix_dp_connector_helper_funcs); drm_connector_register(connector); drm_mode_connector_attach_encoder(connector, encoder); - if (dp->panel) - ret = drm_panel_attach(dp->panel, &dp->connector); + if (dp->plat_data && dp->plat_data->panel) { + ret = drm_panel_attach(dp->plat_data->panel, &dp->connector); + if (ret) { + DRM_ERROR("Failed to attach panel\n"); + return ret; + } + } + + /* + * This should be the end of attach function, caused + * we should ensure dp bridge could attach first. + */ + if (dp->plat_data && dp->plat_data->attach) { + ret = dp->plat_data->attach(dp->plat_data, bridge); + if (ret) { + DRM_ERROR("Failed at platform attch func\n"); + return ret; + } + } - return ret; + return 0; } -static void exynos_dp_bridge_nop(struct drm_bridge *bridge) +static void analogix_dp_bridge_nop(struct drm_bridge *bridge) { /* do nothing */ } -static void exynos_dp_bridge_enable(struct drm_bridge *bridge) +static void analogix_dp_bridge_enable(struct drm_bridge *bridge) { - struct exynos_dp_device *dp = bridge->driver_private; + struct analogix_dp_device *dp = bridge->driver_private; - exynos_dp_poweron(dp); + analogix_dp_poweron(dp); dp->dpms_mode = DRM_MODE_DPMS_ON; } -static void exynos_dp_bridge_disable(struct drm_bridge *bridge) +static void analogix_dp_bridge_disable(struct drm_bridge *bridge) { - struct exynos_dp_device *dp = bridge->driver_private; + struct analogix_dp_device *dp = bridge->driver_private; - exynos_dp_poweroff(dp); + analogix_dp_poweroff(dp); dp->dpms_mode = DRM_MODE_DPMS_OFF; } -static const struct drm_bridge_funcs exynos_dp_bridge_funcs = { - .enable = exynos_dp_bridge_enable, - .disable = exynos_dp_bridge_disable, - .pre_enable = exynos_dp_bridge_nop, - .post_disable = exynos_dp_bridge_nop, - .attach = exynos_dp_bridge_attach, +static const struct drm_bridge_funcs analogix_dp_bridge_funcs = { + .enable = analogix_dp_bridge_enable, + .disable = analogix_dp_bridge_disable, + .pre_enable = analogix_dp_bridge_nop, + .post_disable = analogix_dp_bridge_nop, + .attach = analogix_dp_bridge_attach, }; -static int exynos_dp_create_connector(struct exynos_drm_display *display, - struct drm_encoder *encoder) +static int analogix_dp_bridge_register(struct drm_device *drm_dev, + struct analogix_dp_device *dp) + { - struct exynos_dp_device *dp = display_to_dp(display); - struct drm_device *drm_dev = dp->drm_dev; struct drm_bridge *bridge; int ret; @@ -1163,11 +1132,10 @@ static int exynos_dp_create_connector(struct exynos_drm_display *display, } dp->bridge = bridge; - dp->encoder = encoder; bridge->driver_private = dp; bridge->encoder = dp->encoder; - bridge->funcs = &exynos_dp_bridge_funcs; + bridge->funcs = &analogix_dp_bridge_funcs; ret = drm_bridge_attach(drm_dev, bridge); if (ret) { @@ -1178,18 +1146,7 @@ static int exynos_dp_create_connector(struct exynos_drm_display *display, return 0; } -static void exynos_dp_dpms(struct exynos_drm_display *display, int mode) -{ - /* do nothing */ -} - -static struct exynos_drm_display_ops exynos_dp_display_ops = { - .create_connector = exynos_dp_create_connector, - .dpms = exynos_dp_dpms, - .commit = exynos_dp_commit, -}; - -static struct video_info *exynos_dp_dt_parse_pdata(struct device *dev) +static struct video_info *analogix_dp_dt_parse_pdata(struct device *dev) { struct device_node *dp_node = dev->of_node; struct video_info *dp_video_config; @@ -1208,37 +1165,37 @@ static struct video_info *exynos_dp_dt_parse_pdata(struct device *dev) dp_video_config->interlaced = of_property_read_bool(dp_node, "interlaced"); - if (of_property_read_u32(dp_node, "samsung,color-space", + if (of_property_read_u32(dp_node, "analogix,color-space", &dp_video_config->color_space)) { dev_err(dev, "failed to get color-space\n"); return ERR_PTR(-EINVAL); } - if (of_property_read_u32(dp_node, "samsung,dynamic-range", + if (of_property_read_u32(dp_node, "analogix,dynamic-range", &dp_video_config->dynamic_range)) { dev_err(dev, "failed to get dynamic-range\n"); return ERR_PTR(-EINVAL); } - if (of_property_read_u32(dp_node, "samsung,ycbcr-coeff", + if (of_property_read_u32(dp_node, "analogix,ycbcr-coeff", &dp_video_config->ycbcr_coeff)) { dev_err(dev, "failed to get ycbcr-coeff\n"); return ERR_PTR(-EINVAL); } - if (of_property_read_u32(dp_node, "samsung,color-depth", + if (of_property_read_u32(dp_node, "analogix,color-depth", &dp_video_config->color_depth)) { dev_err(dev, "failed to get color-depth\n"); return ERR_PTR(-EINVAL); } - if (of_property_read_u32(dp_node, "samsung,link-rate", + if (of_property_read_u32(dp_node, "analogix,link-rate", &dp_video_config->link_rate)) { dev_err(dev, "failed to get link-rate\n"); return ERR_PTR(-EINVAL); } - if (of_property_read_u32(dp_node, "samsung,lane-count", + if (of_property_read_u32(dp_node, "analogix,lane-count", &dp_video_config->lane_count)) { dev_err(dev, "failed to get lane-count\n"); return ERR_PTR(-EINVAL); @@ -1247,32 +1204,33 @@ static struct video_info *exynos_dp_dt_parse_pdata(struct device *dev) return dp_video_config; } -static int exynos_dp_dt_parse_panel(struct exynos_dp_device *dp) +int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev, + struct drm_encoder *encoder, + struct analogix_dp_plat_data *plat_data) { - int ret; - - ret = of_get_videomode(dp->dev->of_node, &dp->priv.vm, - OF_USE_NATIVE_MODE); - if (ret) { - DRM_ERROR("failed: of_get_videomode() : %d\n", ret); - return ret; - } - return 0; -} - -static int exynos_dp_bind(struct device *dev, struct device *master, void *data) -{ - struct exynos_dp_device *dp = dev_get_drvdata(dev); struct platform_device *pdev = to_platform_device(dev); - struct drm_device *drm_dev = data; + struct analogix_dp_device *dp; struct resource *res; unsigned int irq_flags; int ret = 0; + dp = devm_kzalloc(dev, sizeof(struct analogix_dp_device), GFP_KERNEL); + if (!dp) + return -ENOMEM; + + dev_set_drvdata(dev, dp); + dp->dev = &pdev->dev; dp->dpms_mode = DRM_MODE_DPMS_OFF; - dp->video_info = exynos_dp_dt_parse_pdata(&pdev->dev); + /* + * platform dp driver need containor_of the plat_data to get + * the driver private data, so we need to store the point of + * plat_data, not the context of plat_data. + */ + dp->plat_data = plat_data; + + dp->video_info = analogix_dp_dt_parse_pdata(&pdev->dev); if (IS_ERR(dp->video_info)) return PTR_ERR(dp->video_info); @@ -1292,12 +1250,6 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data) } } - if (!dp->panel && !dp->ptn_bridge) { - ret = exynos_dp_dt_parse_panel(dp); - if (ret) - return ret; - } - dp->clock = devm_clk_get(&pdev->dev, "dp"); if (IS_ERR(dp->clock)) { dev_err(&pdev->dev, "failed to get clock\n"); @@ -1312,7 +1264,7 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data) if (IS_ERR(dp->reg_base)) return PTR_ERR(dp->reg_base); - dp->hpd_gpio = of_get_named_gpio(dev->of_node, "samsung,hpd-gpio", 0); + dp->hpd_gpio = of_get_named_gpio(dev->of_node, "analogix,hpd-gpio", 0); if (gpio_is_valid(dp->hpd_gpio)) { /* @@ -1341,14 +1293,14 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data) return -ENODEV; } - INIT_WORK(&dp->hotplug_work, exynos_dp_hotplug); + INIT_WORK(&dp->hotplug_work, analogix_dp_hotplug); - exynos_dp_phy_init(dp); + analogix_dp_phy_init(dp); - exynos_dp_init_dp(dp); + analogix_dp_init_dp(dp); - ret = devm_request_irq(&pdev->dev, dp->irq, exynos_dp_irq_handler, - irq_flags, "exynos-dp", dp); + ret = devm_request_irq(&pdev->dev, dp->irq, analogix_dp_irq_handler, + irq_flags, "analogix-dp", dp); if (ret) { dev_err(&pdev->dev, "failed to request irq\n"); return ret; @@ -1356,108 +1308,38 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data) disable_irq(dp->irq); dp->drm_dev = drm_dev; + dp->encoder = encoder; - return exynos_drm_create_enc_conn(drm_dev, &dp->display); -} - -static void exynos_dp_unbind(struct device *dev, struct device *master, - void *data) -{ - struct exynos_dp_device *dp = dev_get_drvdata(dev); - - exynos_dp_bridge_disable(dp->bridge); -} - -static const struct component_ops exynos_dp_ops = { - .bind = exynos_dp_bind, - .unbind = exynos_dp_unbind, -}; - -static int exynos_dp_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct device_node *panel_node, *bridge_node, *endpoint; - struct exynos_dp_device *dp; - - dp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_dp_device), - GFP_KERNEL); - if (!dp) - return -ENOMEM; - - dp->display.type = EXYNOS_DISPLAY_TYPE_LCD; - dp->display.ops = &exynos_dp_display_ops; - platform_set_drvdata(pdev, dp); - - panel_node = of_parse_phandle(dev->of_node, "panel", 0); - if (panel_node) { - dp->panel = of_drm_find_panel(panel_node); - of_node_put(panel_node); - if (!dp->panel) - return -EPROBE_DEFER; - } - - endpoint = of_graph_get_next_endpoint(dev->of_node, NULL); - if (endpoint) { - bridge_node = of_graph_get_remote_port_parent(endpoint); - if (bridge_node) { - dp->ptn_bridge = of_drm_find_bridge(bridge_node); - of_node_put(bridge_node); - if (!dp->ptn_bridge) - return -EPROBE_DEFER; - } else { - return -EPROBE_DEFER; - } - } - - return component_add(&pdev->dev, &exynos_dp_ops); + return analogix_dp_bridge_register(drm_dev, dp); } +EXPORT_SYMBOL_GPL(analogix_dp_bind); -static int exynos_dp_remove(struct platform_device *pdev) +void analogix_dp_unbind(struct device *dev, struct device *master, void *data) { - component_del(&pdev->dev, &exynos_dp_ops); + struct analogix_dp_device *dp = dev_get_drvdata(dev); - return 0; + analogix_dp_bridge_disable(dp->bridge); } +EXPORT_SYMBOL_GPL(analogix_dp_unbind); -#ifdef CONFIG_PM_SLEEP -static int exynos_dp_suspend(struct device *dev) +int analogix_dp_suspend(struct device *dev) { - struct exynos_dp_device *dp = dev_get_drvdata(dev); + struct analogix_dp_device *dp = dev_get_drvdata(dev); - exynos_dp_bridge_disable(dp->bridge); + analogix_dp_bridge_disable(dp->bridge); return 0; } +EXPORT_SYMBOL_GPL(analogix_dp_suspend); -static int exynos_dp_resume(struct device *dev) +int analogix_dp_resume(struct device *dev) { - struct exynos_dp_device *dp = dev_get_drvdata(dev); + struct analogix_dp_device *dp = dev_get_drvdata(dev); - exynos_dp_bridge_enable(dp->bridge); + analogix_dp_bridge_enable(dp->bridge); return 0; } -#endif - -static const struct dev_pm_ops exynos_dp_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(exynos_dp_suspend, exynos_dp_resume) -}; - -static const struct of_device_id exynos_dp_match[] = { - { .compatible = "samsung,exynos5-dp" }, - {}, -}; -MODULE_DEVICE_TABLE(of, exynos_dp_match); - -struct platform_driver dp_driver = { - .probe = exynos_dp_probe, - .remove = exynos_dp_remove, - .driver = { - .name = "exynos-dp", - .owner = THIS_MODULE, - .pm = &exynos_dp_pm_ops, - .of_match_table = exynos_dp_match, - }, -}; +EXPORT_SYMBOL_GPL(analogix_dp_resume); MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>"); -MODULE_DESCRIPTION("Samsung SoC DP Driver"); +MODULE_DESCRIPTION("Analogix Core DP Driver"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/gpu/drm/bridge/analogix_dp_core.h b/drivers/gpu/drm/bridge/analogix_dp_core.h new file mode 100644 index 0000000..2cefde9 --- /dev/null +++ b/drivers/gpu/drm/bridge/analogix_dp_core.h @@ -0,0 +1,282 @@ +/* + * Header file for Samsung DP (Display Port) interface driver. + * + * Copyright (C) 2012 Samsung Electronics Co., Ltd. + * Author: Jingoo Han <jg1.han@samsung.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#ifndef _ANALOGIX_DP_CORE_H +#define _ANALOGIX_DP_CORE_H + +#include <drm/drm_crtc.h> +#include <drm/drm_dp_helper.h> + +#define DP_TIMEOUT_LOOP_COUNT 100 +#define MAX_CR_LOOP 5 +#define MAX_EQ_LOOP 5 + +enum link_rate_type { + LINK_RATE_1_62GBPS = 0x06, + LINK_RATE_2_70GBPS = 0x0a +}; + +enum link_lane_count_type { + LANE_COUNT1 = 1, + LANE_COUNT2 = 2, + LANE_COUNT4 = 4 +}; + +enum link_training_state { + START, + CLOCK_RECOVERY, + EQUALIZER_TRAINING, + FINISHED, + FAILED +}; + +enum voltage_swing_level { + VOLTAGE_LEVEL_0, + VOLTAGE_LEVEL_1, + VOLTAGE_LEVEL_2, + VOLTAGE_LEVEL_3, +}; + +enum pre_emphasis_level { + PRE_EMPHASIS_LEVEL_0, + PRE_EMPHASIS_LEVEL_1, + PRE_EMPHASIS_LEVEL_2, + PRE_EMPHASIS_LEVEL_3, +}; + +enum pattern_set { + PRBS7, + D10_2, + TRAINING_PTN1, + TRAINING_PTN2, + DP_NONE +}; + +enum color_space { + COLOR_RGB, + COLOR_YCBCR422, + COLOR_YCBCR444 +}; + +enum color_depth { + COLOR_6, + COLOR_8, + COLOR_10, + COLOR_12 +}; + +enum color_coefficient { + COLOR_YCBCR601, + COLOR_YCBCR709 +}; + +enum dynamic_range { + VESA, + CEA +}; + +enum pll_status { + PLL_UNLOCKED, + PLL_LOCKED +}; + +enum clock_recovery_m_value_type { + CALCULATED_M, + REGISTER_M +}; + +enum video_timing_recognition_type { + VIDEO_TIMING_FROM_CAPTURE, + VIDEO_TIMING_FROM_REGISTER +}; + +enum analog_power_block { + AUX_BLOCK, + CH0_BLOCK, + CH1_BLOCK, + CH2_BLOCK, + CH3_BLOCK, + ANALOG_TOTAL, + POWER_ALL +}; + +enum dp_irq_type { + DP_IRQ_TYPE_HP_CABLE_IN, + DP_IRQ_TYPE_HP_CABLE_OUT, + DP_IRQ_TYPE_HP_CHANGE, + DP_IRQ_TYPE_UNKNOWN, +}; + +struct video_info { + char *name; + + bool h_sync_polarity; + bool v_sync_polarity; + bool interlaced; + + enum color_space color_space; + enum dynamic_range dynamic_range; + enum color_coefficient ycbcr_coeff; + enum color_depth color_depth; + + enum link_rate_type link_rate; + enum link_lane_count_type lane_count; +}; + +struct link_train { + int eq_loop; + int cr_loop[4]; + + u8 link_rate; + u8 lane_count; + u8 training_lane[4]; + + enum link_training_state lt_state; +}; + +struct analogix_dp_device { + struct device *dev; + struct drm_device *drm_dev; + struct drm_connector connector; + struct drm_encoder *encoder; + struct drm_bridge *bridge; + struct clk *clock; + unsigned int irq; + void __iomem *reg_base; + + struct video_info *video_info; + struct link_train link_train; + struct work_struct hotplug_work; + struct phy *phy; + int dpms_mode; + int hpd_gpio; + + struct analogix_dp_plat_data *plat_data; +}; + +/* analogix_dp_reg.c */ +void analogix_dp_enable_video_mute(struct analogix_dp_device *dp, bool enable); +void analogix_dp_stop_video(struct analogix_dp_device *dp); +void analogix_dp_lane_swap(struct analogix_dp_device *dp, bool enable); +void analogix_dp_init_analog_param(struct analogix_dp_device *dp); +void analogix_dp_init_interrupt(struct analogix_dp_device *dp); +void analogix_dp_reset(struct analogix_dp_device *dp); +void analogix_dp_swreset(struct analogix_dp_device *dp); +void analogix_dp_config_interrupt(struct analogix_dp_device *dp); +enum pll_status analogix_dp_get_pll_lock_status(struct analogix_dp_device *dp); +void analogix_dp_set_pll_power_down(struct analogix_dp_device *dp, bool enable); +void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp, + enum analog_power_block block, + bool enable); +void analogix_dp_init_analog_func(struct analogix_dp_device *dp); +void analogix_dp_init_hpd(struct analogix_dp_device *dp); +enum dp_irq_type analogix_dp_get_irq_type(struct analogix_dp_device *dp); +void analogix_dp_clear_hotplug_interrupts(struct analogix_dp_device *dp); +void analogix_dp_reset_aux(struct analogix_dp_device *dp); +void analogix_dp_init_aux(struct analogix_dp_device *dp); +int analogix_dp_get_plug_in_status(struct analogix_dp_device *dp); +void analogix_dp_enable_sw_function(struct analogix_dp_device *dp); +int analogix_dp_start_aux_transaction(struct analogix_dp_device *dp); +int analogix_dp_write_byte_to_dpcd(struct analogix_dp_device *dp, + unsigned int reg_addr, + unsigned char data); +int analogix_dp_read_byte_from_dpcd(struct analogix_dp_device *dp, + unsigned int reg_addr, + unsigned char *data); +int analogix_dp_write_bytes_to_dpcd(struct analogix_dp_device *dp, + unsigned int reg_addr, + unsigned int count, + unsigned char data[]); +int analogix_dp_read_bytes_from_dpcd(struct analogix_dp_device *dp, + unsigned int reg_addr, + unsigned int count, + unsigned char data[]); +int analogix_dp_select_i2c_device(struct analogix_dp_device *dp, + unsigned int device_addr, + unsigned int reg_addr); +int analogix_dp_read_byte_from_i2c(struct analogix_dp_device *dp, + unsigned int device_addr, + unsigned int reg_addr, + unsigned int *data); +int analogix_dp_read_bytes_from_i2c(struct analogix_dp_device *dp, + unsigned int device_addr, + unsigned int reg_addr, + unsigned int count, + unsigned char edid[]); +void analogix_dp_set_link_bandwidth(struct analogix_dp_device *dp, u32 bwtype); +void analogix_dp_get_link_bandwidth(struct analogix_dp_device *dp, u32 *bwtype); +void analogix_dp_set_lane_count(struct analogix_dp_device *dp, u32 count); +void analogix_dp_get_lane_count(struct analogix_dp_device *dp, u32 *count); +void analogix_dp_enable_enhanced_mode(struct analogix_dp_device *dp, + bool enable); +void analogix_dp_set_training_pattern(struct analogix_dp_device *dp, + enum pattern_set pattern); +void analogix_dp_set_lane0_pre_emphasis(struct analogix_dp_device *dp, + u32 level); +void analogix_dp_set_lane1_pre_emphasis(struct analogix_dp_device *dp, + u32 level); +void analogix_dp_set_lane2_pre_emphasis(struct analogix_dp_device *dp, + u32 level); +void analogix_dp_set_lane3_pre_emphasis(struct analogix_dp_device *dp, + u32 level); +void analogix_dp_set_lane0_link_training(struct analogix_dp_device *dp, + u32 training_lane); +void analogix_dp_set_lane1_link_training(struct analogix_dp_device *dp, + u32 training_lane); +void analogix_dp_set_lane2_link_training(struct analogix_dp_device *dp, + u32 training_lane); +void analogix_dp_set_lane3_link_training(struct analogix_dp_device *dp, + u32 training_lane); +u32 analogix_dp_get_lane0_link_training(struct analogix_dp_device *dp); +u32 analogix_dp_get_lane1_link_training(struct analogix_dp_device *dp); +u32 analogix_dp_get_lane2_link_training(struct analogix_dp_device *dp); +u32 analogix_dp_get_lane3_link_training(struct analogix_dp_device *dp); +void analogix_dp_reset_macro(struct analogix_dp_device *dp); +void analogix_dp_init_video(struct analogix_dp_device *dp); + +void analogix_dp_set_video_color_format(struct analogix_dp_device *dp); +int analogix_dp_is_slave_video_stream_clock_on(struct analogix_dp_device *dp); +void analogix_dp_set_video_cr_mn(struct analogix_dp_device *dp, + enum clock_recovery_m_value_type type, + u32 m_value, u32 n_value); +void analogix_dp_set_video_timing_mode(struct analogix_dp_device *dp, u32 type); +void analogix_dp_enable_video_master(struct analogix_dp_device *dp, + bool enable); +void analogix_dp_start_video(struct analogix_dp_device *dp); +int analogix_dp_is_video_stream_on(struct analogix_dp_device *dp); +void analogix_dp_config_video_slave_mode(struct analogix_dp_device *dp); +void analogix_dp_enable_scrambling(struct analogix_dp_device *dp); +void analogix_dp_disable_scrambling(struct analogix_dp_device *dp); + +/* I2C EDID Chip ID, Slave Address */ +#define I2C_EDID_DEVICE_ADDR 0x50 +#define I2C_E_EDID_DEVICE_ADDR 0x30 + +#define EDID_BLOCK_LENGTH 0x80 +#define EDID_HEADER_PATTERN 0x00 +#define EDID_EXTENSION_FLAG 0x7e +#define EDID_CHECKSUM 0x7f + +/* DP_MAX_LANE_COUNT */ +#define DPCD_ENHANCED_FRAME_CAP(x) (((x) >> 7) & 0x1) +#define DPCD_MAX_LANE_COUNT(x) ((x) & 0x1f) + +/* DP_LANE_COUNT_SET */ +#define DPCD_LANE_COUNT_SET(x) ((x) & 0x1f) + +/* DP_TRAINING_LANE0_SET */ +#define DPCD_PRE_EMPHASIS_SET(x) (((x) & 0x3) << 3) +#define DPCD_PRE_EMPHASIS_GET(x) (((x) >> 3) & 0x3) +#define DPCD_VOLTAGE_SWING_SET(x) (((x) & 0x3) << 0) +#define DPCD_VOLTAGE_SWING_GET(x) (((x) >> 0) & 0x3) + +#endif /* _ANALOGIX_DP_CORE_H */ diff --git a/drivers/gpu/drm/bridge/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix_dp_reg.c new file mode 100644 index 0000000..cc5cdbf --- /dev/null +++ b/drivers/gpu/drm/bridge/analogix_dp_reg.c @@ -0,0 +1,1265 @@ +/* + * Samsung DP (Display port) register interface driver. + * + * Copyright (C) 2012 Samsung Electronics Co., Ltd. + * Author: Jingoo Han <jg1.han@samsung.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/device.h> +#include <linux/io.h> +#include <linux/delay.h> +#include <linux/gpio.h> + +#include "analogix_dp_core.h" +#include "analogix_dp_reg.h" + +#define COMMON_INT_MASK_1 0 +#define COMMON_INT_MASK_2 0 +#define COMMON_INT_MASK_3 0 +#define COMMON_INT_MASK_4 (HOTPLUG_CHG | HPD_LOST | PLUG) +#define INT_STA_MASK INT_HPD + +void analogix_dp_enable_video_mute(struct analogix_dp_device *dp, bool enable) +{ + u32 reg; + + if (enable) { + reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1); + reg |= HDCP_VIDEO_MUTE; + writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1); + } else { + reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1); + reg &= ~HDCP_VIDEO_MUTE; + writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1); + } +} + +void analogix_dp_stop_video(struct analogix_dp_device *dp) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1); + reg &= ~VIDEO_EN; + writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1); +} + +void analogix_dp_lane_swap(struct analogix_dp_device *dp, bool enable) +{ + u32 reg; + + if (enable) + reg = LANE3_MAP_LOGIC_LANE_0 | LANE2_MAP_LOGIC_LANE_1 | + LANE1_MAP_LOGIC_LANE_2 | LANE0_MAP_LOGIC_LANE_3; + else + reg = LANE3_MAP_LOGIC_LANE_3 | LANE2_MAP_LOGIC_LANE_2 | + LANE1_MAP_LOGIC_LANE_1 | LANE0_MAP_LOGIC_LANE_0; + + writel(reg, dp->reg_base + ANALOGIX_DP_LANE_MAP); +} + +void analogix_dp_init_analog_param(struct analogix_dp_device *dp) +{ + u32 reg; + + reg = TX_TERMINAL_CTRL_50_OHM; + writel(reg, dp->reg_base + ANALOGIX_DP_ANALOG_CTL_1); + + reg = SEL_24M | TX_DVDD_BIT_1_0625V; + writel(reg, dp->reg_base + ANALOGIX_DP_ANALOG_CTL_2); + + reg = DRIVE_DVDD_BIT_1_0625V | VCO_BIT_600_MICRO; + writel(reg, dp->reg_base + ANALOGIX_DP_ANALOG_CTL_3); + + reg = PD_RING_OSC | AUX_TERMINAL_CTRL_50_OHM | + TX_CUR1_2X | TX_CUR_16_MA; + writel(reg, dp->reg_base + ANALOGIX_DP_PLL_FILTER_CTL_1); + + reg = CH3_AMP_400_MV | CH2_AMP_400_MV | + CH1_AMP_400_MV | CH0_AMP_400_MV; + writel(reg, dp->reg_base + ANALOGIX_DP_TX_AMP_TUNING_CTL); +} + +void analogix_dp_init_interrupt(struct analogix_dp_device *dp) +{ + /* Set interrupt pin assertion polarity as high */ + writel(INT_POL1 | INT_POL0, dp->reg_base + ANALOGIX_DP_INT_CTL); + + /* Clear pending regisers */ + writel(0xff, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_1); + writel(0x4f, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_2); + writel(0xe0, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_3); + writel(0xe7, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_4); + writel(0x63, dp->reg_base + ANALOGIX_DP_INT_STA); + + /* 0:mask,1: unmask */ + writel(0x00, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_1); + writel(0x00, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_2); + writel(0x00, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_3); + writel(0x00, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_4); + writel(0x00, dp->reg_base + ANALOGIX_DP_INT_STA_MASK); +} + +void analogix_dp_reset(struct analogix_dp_device *dp) +{ + u32 reg; + + analogix_dp_stop_video(dp); + analogix_dp_enable_video_mute(dp, 0); + + reg = MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N | + AUD_FIFO_FUNC_EN_N | AUD_FUNC_EN_N | + HDCP_FUNC_EN_N | SW_FUNC_EN_N; + writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_1); + + reg = SSC_FUNC_EN_N | AUX_FUNC_EN_N | + SERDES_FIFO_FUNC_EN_N | + LS_CLK_DOMAIN_FUNC_EN_N; + writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_2); + + usleep_range(20, 30); + + analogix_dp_lane_swap(dp, 0); + + writel(0x0, dp->reg_base + ANALOGIX_DP_SYS_CTL_1); + writel(0x40, dp->reg_base + ANALOGIX_DP_SYS_CTL_2); + writel(0x0, dp->reg_base + ANALOGIX_DP_SYS_CTL_3); + writel(0x0, dp->reg_base + ANALOGIX_DP_SYS_CTL_4); + + writel(0x0, dp->reg_base + ANALOGIX_DP_PKT_SEND_CTL); + writel(0x0, dp->reg_base + ANALOGIX_DP_HDCP_CTL); + + writel(0x5e, dp->reg_base + ANALOGIX_DP_HPD_DEGLITCH_L); + writel(0x1a, dp->reg_base + ANALOGIX_DP_HPD_DEGLITCH_H); + + writel(0x10, dp->reg_base + ANALOGIX_DP_LINK_DEBUG_CTL); + + writel(0x0, dp->reg_base + ANALOGIX_DP_PHY_TEST); + + writel(0x0, dp->reg_base + ANALOGIX_DP_VIDEO_FIFO_THRD); + writel(0x20, dp->reg_base + ANALOGIX_DP_AUDIO_MARGIN); + + writel(0x4, dp->reg_base + ANALOGIX_DP_M_VID_GEN_FILTER_TH); + writel(0x2, dp->reg_base + ANALOGIX_DP_M_AUD_GEN_FILTER_TH); + + writel(0x00000101, dp->reg_base + ANALOGIX_DP_SOC_GENERAL_CTL); +} + +void analogix_dp_swreset(struct analogix_dp_device *dp) +{ + writel(RESET_DP_TX, dp->reg_base + ANALOGIX_DP_TX_SW_RESET); +} + +void analogix_dp_config_interrupt(struct analogix_dp_device *dp) +{ + u32 reg; + + /* 0: mask, 1: unmask */ + reg = COMMON_INT_MASK_1; + writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_1); + + reg = COMMON_INT_MASK_2; + writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_2); + + reg = COMMON_INT_MASK_3; + writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_3); + + reg = COMMON_INT_MASK_4; + writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_4); + + reg = INT_STA_MASK; + writel(reg, dp->reg_base + ANALOGIX_DP_INT_STA_MASK); +} + +enum pll_status analogix_dp_get_pll_lock_status(struct analogix_dp_device *dp) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_DEBUG_CTL); + if (reg & PLL_LOCK) + return PLL_LOCKED; + else + return PLL_UNLOCKED; +} + +void analogix_dp_set_pll_power_down(struct analogix_dp_device *dp, bool enable) +{ + u32 reg; + + if (enable) { + reg = readl(dp->reg_base + ANALOGIX_DP_PLL_CTL); + reg |= DP_PLL_PD; + writel(reg, dp->reg_base + ANALOGIX_DP_PLL_CTL); + } else { + reg = readl(dp->reg_base + ANALOGIX_DP_PLL_CTL); + reg &= ~DP_PLL_PD; + writel(reg, dp->reg_base + ANALOGIX_DP_PLL_CTL); + } +} + +void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp, + enum analog_power_block block, + bool enable) +{ + u32 reg; + + switch (block) { + case AUX_BLOCK: + if (enable) { + reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD); + reg |= AUX_PD; + writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD); + } else { + reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD); + reg &= ~AUX_PD; + writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD); + } + break; + case CH0_BLOCK: + if (enable) { + reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD); + reg |= CH0_PD; + writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD); + } else { + reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD); + reg &= ~CH0_PD; + writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD); + } + break; + case CH1_BLOCK: + if (enable) { + reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD); + reg |= CH1_PD; + writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD); + } else { + reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD); + reg &= ~CH1_PD; + writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD); + } + break; + case CH2_BLOCK: + if (enable) { + reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD); + reg |= CH2_PD; + writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD); + } else { + reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD); + reg &= ~CH2_PD; + writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD); + } + break; + case CH3_BLOCK: + if (enable) { + reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD); + reg |= CH3_PD; + writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD); + } else { + reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD); + reg &= ~CH3_PD; + writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD); + } + break; + case ANALOG_TOTAL: + if (enable) { + reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD); + reg |= DP_PHY_PD; + writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD); + } else { + reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD); + reg &= ~DP_PHY_PD; + writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD); + } + break; + case POWER_ALL: + if (enable) { + reg = DP_PHY_PD | AUX_PD | CH3_PD | CH2_PD | + CH1_PD | CH0_PD; + writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD); + } else { + writel(0x00, dp->reg_base + ANALOGIX_DP_PHY_PD); + } + break; + default: + break; + } +} + +void analogix_dp_init_analog_func(struct analogix_dp_device *dp) +{ + u32 reg; + int timeout_loop = 0; + + analogix_dp_set_analog_power_down(dp, POWER_ALL, 0); + + reg = PLL_LOCK_CHG; + writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_1); + + reg = readl(dp->reg_base + ANALOGIX_DP_DEBUG_CTL); + reg &= ~(F_PLL_LOCK | PLL_LOCK_CTRL); + writel(reg, dp->reg_base + ANALOGIX_DP_DEBUG_CTL); + + /* Power up PLL */ + if (analogix_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) { + analogix_dp_set_pll_power_down(dp, 0); + + while (analogix_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) { + timeout_loop++; + if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) { + dev_err(dp->dev, "failed to get pll lock status\n"); + return; + } + usleep_range(10, 20); + } + } + + /* Enable Serdes FIFO function and Link symbol clock domain module */ + reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_2); + reg &= ~(SERDES_FIFO_FUNC_EN_N | LS_CLK_DOMAIN_FUNC_EN_N + | AUX_FUNC_EN_N); + writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_2); +} + +void analogix_dp_clear_hotplug_interrupts(struct analogix_dp_device *dp) +{ + u32 reg; + + if (gpio_is_valid(dp->hpd_gpio)) + return; + + reg = HOTPLUG_CHG | HPD_LOST | PLUG; + writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_4); + + reg = INT_HPD; + writel(reg, dp->reg_base + ANALOGIX_DP_INT_STA); +} + +void analogix_dp_init_hpd(struct analogix_dp_device *dp) +{ + u32 reg; + + if (gpio_is_valid(dp->hpd_gpio)) + return; + + analogix_dp_clear_hotplug_interrupts(dp); + + reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_3); + reg &= ~(F_HPD | HPD_CTRL); + writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_3); +} + +enum dp_irq_type analogix_dp_get_irq_type(struct analogix_dp_device *dp) +{ + u32 reg; + + if (gpio_is_valid(dp->hpd_gpio)) { + reg = gpio_get_value(dp->hpd_gpio); + if (reg) + return DP_IRQ_TYPE_HP_CABLE_IN; + else + return DP_IRQ_TYPE_HP_CABLE_OUT; + } else { + /* Parse hotplug interrupt status register */ + reg = readl(dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_4); + + if (reg & PLUG) + return DP_IRQ_TYPE_HP_CABLE_IN; + + if (reg & HPD_LOST) + return DP_IRQ_TYPE_HP_CABLE_OUT; + + if (reg & HOTPLUG_CHG) + return DP_IRQ_TYPE_HP_CHANGE; + + return DP_IRQ_TYPE_UNKNOWN; + } +} + +void analogix_dp_reset_aux(struct analogix_dp_device *dp) +{ + u32 reg; + + /* Disable AUX channel module */ + reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_2); + reg |= AUX_FUNC_EN_N; + writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_2); +} + +void analogix_dp_init_aux(struct analogix_dp_device *dp) +{ + u32 reg; + + /* Clear inerrupts related to AUX channel */ + reg = RPLY_RECEIV | AUX_ERR; + writel(reg, dp->reg_base + ANALOGIX_DP_INT_STA); + + analogix_dp_reset_aux(dp); + + /* Disable AUX transaction H/W retry */ + reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3) | AUX_HW_RETRY_COUNT_SEL(0) | + AUX_HW_RETRY_INTERVAL_600_MICROSECONDS; + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_HW_RETRY_CTL); + + /* Receive AUX Channel DEFER commands equal to DEFFER_COUNT*64 */ + reg = DEFER_CTRL_EN | DEFER_COUNT(1); + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_DEFER_CTL); + + /* Enable AUX channel module */ + reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_2); + reg &= ~AUX_FUNC_EN_N; + writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_2); +} + +int analogix_dp_get_plug_in_status(struct analogix_dp_device *dp) +{ + u32 reg; + + if (gpio_is_valid(dp->hpd_gpio)) { + if (gpio_get_value(dp->hpd_gpio)) + return 0; + } else { + reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_3); + if (reg & HPD_STATUS) + return 0; + } + + return -EINVAL; +} + +void analogix_dp_enable_sw_function(struct analogix_dp_device *dp) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_1); + reg &= ~SW_FUNC_EN_N; + writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_1); +} + +int analogix_dp_start_aux_transaction(struct analogix_dp_device *dp) +{ + int reg; + int retval = 0; + int timeout_loop = 0; + + /* Enable AUX CH operation */ + reg = readl(dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2); + reg |= AUX_EN; + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2); + + /* Is AUX CH command reply received? */ + reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA); + while (!(reg & RPLY_RECEIV)) { + timeout_loop++; + if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) { + dev_err(dp->dev, "AUX CH command reply failed!\n"); + return -ETIMEDOUT; + } + reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA); + usleep_range(10, 11); + } + + /* Clear interrupt source for AUX CH command reply */ + writel(RPLY_RECEIV, dp->reg_base + ANALOGIX_DP_INT_STA); + + /* Clear interrupt source for AUX CH access error */ + reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA); + if (reg & AUX_ERR) { + writel(AUX_ERR, dp->reg_base + ANALOGIX_DP_INT_STA); + return -EREMOTEIO; + } + + /* Check AUX CH error access status */ + reg = readl(dp->reg_base + ANALOGIX_DP_AUX_CH_STA); + if ((reg & AUX_STATUS_MASK) != 0) { + dev_err(dp->dev, "AUX CH error happens: %d\n\n", + reg & AUX_STATUS_MASK); + return -EREMOTEIO; + } + + return retval; +} + +int analogix_dp_write_byte_to_dpcd(struct analogix_dp_device *dp, + unsigned int reg_addr, + unsigned char data) +{ + u32 reg; + int i; + int retval; + + for (i = 0; i < 3; i++) { + /* Clear AUX CH data buffer */ + reg = BUF_CLR; + writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL); + + /* Select DPCD device address */ + reg = AUX_ADDR_7_0(reg_addr); + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_7_0); + reg = AUX_ADDR_15_8(reg_addr); + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_15_8); + reg = AUX_ADDR_19_16(reg_addr); + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_19_16); + + /* Write data buffer */ + reg = (unsigned int)data; + writel(reg, dp->reg_base + ANALOGIX_DP_BUF_DATA_0); + + /* + * Set DisplayPort transaction and write 1 byte + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE; + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1); + + /* Start AUX transaction */ + retval = analogix_dp_start_aux_transaction(dp); + if (retval == 0) + break; + + dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__); + } + + return retval; +} + +int analogix_dp_read_byte_from_dpcd(struct analogix_dp_device *dp, + unsigned int reg_addr, + unsigned char *data) +{ + u32 reg; + int i; + int retval; + + for (i = 0; i < 3; i++) { + /* Clear AUX CH data buffer */ + reg = BUF_CLR; + writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL); + + /* Select DPCD device address */ + reg = AUX_ADDR_7_0(reg_addr); + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_7_0); + reg = AUX_ADDR_15_8(reg_addr); + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_15_8); + reg = AUX_ADDR_19_16(reg_addr); + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_19_16); + + /* + * Set DisplayPort transaction and read 1 byte + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ; + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1); + + /* Start AUX transaction */ + retval = analogix_dp_start_aux_transaction(dp); + if (retval == 0) + break; + + dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__); + } + + /* Read data buffer */ + reg = readl(dp->reg_base + ANALOGIX_DP_BUF_DATA_0); + *data = (unsigned char)(reg & 0xff); + + return retval; +} + +int analogix_dp_write_bytes_to_dpcd(struct analogix_dp_device *dp, + unsigned int reg_addr, + unsigned int count, + unsigned char data[]) +{ + u32 reg; + unsigned int start_offset; + unsigned int cur_data_count; + unsigned int cur_data_idx; + int i; + int retval = 0; + + /* Clear AUX CH data buffer */ + reg = BUF_CLR; + writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL); + + start_offset = 0; + while (start_offset < count) { + /* Buffer size of AUX CH is 16 * 4bytes */ + if ((count - start_offset) > 16) + cur_data_count = 16; + else + cur_data_count = count - start_offset; + + for (i = 0; i < 3; i++) { + /* Select DPCD device address */ + reg = AUX_ADDR_7_0(reg_addr + start_offset); + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_7_0); + reg = AUX_ADDR_15_8(reg_addr + start_offset); + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_15_8); + reg = AUX_ADDR_19_16(reg_addr + start_offset); + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_19_16); + + for (cur_data_idx = 0; cur_data_idx < cur_data_count; + cur_data_idx++) { + reg = data[start_offset + cur_data_idx]; + writel(reg, dp->reg_base + + ANALOGIX_DP_BUF_DATA_0 + + 4 * cur_data_idx); + } + + /* + * Set DisplayPort transaction and write + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_LENGTH(cur_data_count) | + AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE; + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1); + + /* Start AUX transaction */ + retval = analogix_dp_start_aux_transaction(dp); + if (retval == 0) + break; + + dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", + __func__); + } + + start_offset += cur_data_count; + } + + return retval; +} + +int analogix_dp_read_bytes_from_dpcd(struct analogix_dp_device *dp, + unsigned int reg_addr, + unsigned int count, + unsigned char data[]) +{ + u32 reg; + unsigned int start_offset; + unsigned int cur_data_count; + unsigned int cur_data_idx; + int i; + int retval = 0; + + /* Clear AUX CH data buffer */ + reg = BUF_CLR; + writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL); + + start_offset = 0; + while (start_offset < count) { + /* Buffer size of AUX CH is 16 * 4bytes */ + if ((count - start_offset) > 16) + cur_data_count = 16; + else + cur_data_count = count - start_offset; + + /* AUX CH Request Transaction process */ + for (i = 0; i < 3; i++) { + /* Select DPCD device address */ + reg = AUX_ADDR_7_0(reg_addr + start_offset); + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_7_0); + reg = AUX_ADDR_15_8(reg_addr + start_offset); + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_15_8); + reg = AUX_ADDR_19_16(reg_addr + start_offset); + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_19_16); + + /* + * Set DisplayPort transaction and read + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_LENGTH(cur_data_count) | + AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ; + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1); + + /* Start AUX transaction */ + retval = analogix_dp_start_aux_transaction(dp); + if (retval == 0) + break; + + dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", + __func__); + } + + for (cur_data_idx = 0; cur_data_idx < cur_data_count; + cur_data_idx++) { + reg = readl(dp->reg_base + ANALOGIX_DP_BUF_DATA_0 + + 4 * cur_data_idx); + data[start_offset + cur_data_idx] = + (unsigned char)reg; + } + + start_offset += cur_data_count; + } + + return retval; +} + +int analogix_dp_select_i2c_device(struct analogix_dp_device *dp, + unsigned int device_addr, + unsigned int reg_addr) +{ + u32 reg; + int retval; + + /* Set EDID device address */ + reg = device_addr; + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_7_0); + writel(0x0, dp->reg_base + ANALOGIX_DP_AUX_ADDR_15_8); + writel(0x0, dp->reg_base + ANALOGIX_DP_AUX_ADDR_19_16); + + /* Set offset from base address of EDID device */ + writel(reg_addr, dp->reg_base + ANALOGIX_DP_BUF_DATA_0); + + /* + * Set I2C transaction and write address + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_TX_COMM_I2C_TRANSACTION | AUX_TX_COMM_MOT | + AUX_TX_COMM_WRITE; + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1); + + /* Start AUX transaction */ + retval = analogix_dp_start_aux_transaction(dp); + if (retval != 0) + dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__); + + return retval; +} + +int analogix_dp_read_byte_from_i2c(struct analogix_dp_device *dp, + unsigned int device_addr, + unsigned int reg_addr, + unsigned int *data) +{ + u32 reg; + int i; + int retval; + + for (i = 0; i < 3; i++) { + /* Clear AUX CH data buffer */ + reg = BUF_CLR; + writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL); + + /* Select EDID device */ + retval = analogix_dp_select_i2c_device(dp, device_addr, + reg_addr); + if (retval != 0) + continue; + + /* + * Set I2C transaction and read data + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_TX_COMM_I2C_TRANSACTION | + AUX_TX_COMM_READ; + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1); + + /* Start AUX transaction */ + retval = analogix_dp_start_aux_transaction(dp); + if (retval == 0) + break; + + dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__); + } + + /* Read data */ + if (retval == 0) + *data = readl(dp->reg_base + ANALOGIX_DP_BUF_DATA_0); + + return retval; +} + +int analogix_dp_read_bytes_from_i2c(struct analogix_dp_device *dp, + unsigned int device_addr, + unsigned int reg_addr, + unsigned int count, + unsigned char edid[]) +{ + u32 reg; + unsigned int i, j; + unsigned int cur_data_idx; + unsigned int defer = 0; + int retval = 0; + + for (i = 0; i < count; i += 16) { + for (j = 0; j < 3; j++) { + /* Clear AUX CH data buffer */ + reg = BUF_CLR; + writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL); + + /* Set normal AUX CH command */ + reg = readl(dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2); + reg &= ~ADDR_ONLY; + writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2); + + /* + * If Rx sends defer, Tx sends only reads + * request without sending address + */ + if (!defer) + retval = analogix_dp_select_i2c_device( + dp, device_addr, reg_addr + i); + else + defer = 0; + + if (retval == 0) { + /* + * Set I2C transaction and write data + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_LENGTH(16) | + AUX_TX_COMM_I2C_TRANSACTION | + AUX_TX_COMM_READ; + writel(reg, dp->reg_base + + ANALOGIX_DP_AUX_CH_CTL_1); + + /* Start AUX transaction */ + retval = analogix_dp_start_aux_transaction(dp); + if (retval == 0) + break; + + dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", + __func__); + } + /* Check if Rx sends defer */ + reg = readl(dp->reg_base + ANALOGIX_DP_AUX_RX_COMM); + if (reg == AUX_RX_COMM_AUX_DEFER || + reg == AUX_RX_COMM_I2C_DEFER) { + dev_err(dp->dev, "Defer: %d\n\n", reg); + defer = 1; + } + } + + for (cur_data_idx = 0; cur_data_idx < 16; cur_data_idx++) { + reg = readl(dp->reg_base + ANALOGIX_DP_BUF_DATA_0 + + 4 * cur_data_idx); + edid[i + cur_data_idx] = (unsigned char)reg; + } + } + + return retval; +} + +void analogix_dp_set_link_bandwidth(struct analogix_dp_device *dp, u32 bwtype) +{ + u32 reg; + + reg = bwtype; + if ((bwtype == LINK_RATE_2_70GBPS) || (bwtype == LINK_RATE_1_62GBPS)) + writel(reg, dp->reg_base + ANALOGIX_DP_LINK_BW_SET); +} + +void analogix_dp_get_link_bandwidth(struct analogix_dp_device *dp, u32 *bwtype) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_LINK_BW_SET); + *bwtype = reg; +} + +void analogix_dp_set_lane_count(struct analogix_dp_device *dp, u32 count) +{ + u32 reg; + + reg = count; + writel(reg, dp->reg_base + ANALOGIX_DP_LANE_COUNT_SET); +} + +void analogix_dp_get_lane_count(struct analogix_dp_device *dp, u32 *count) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_LANE_COUNT_SET); + *count = reg; +} + +void analogix_dp_enable_enhanced_mode(struct analogix_dp_device *dp, + bool enable) +{ + u32 reg; + + if (enable) { + reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_4); + reg |= ENHANCED; + writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_4); + } else { + reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_4); + reg &= ~ENHANCED; + writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_4); + } +} + +void analogix_dp_set_training_pattern(struct analogix_dp_device *dp, + enum pattern_set pattern) +{ + u32 reg; + + switch (pattern) { + case PRBS7: + reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_PRBS7; + writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET); + break; + case D10_2: + reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_D10_2; + writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET); + break; + case TRAINING_PTN1: + reg = SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN1; + writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET); + break; + case TRAINING_PTN2: + reg = SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN2; + writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET); + break; + case DP_NONE: + reg = SCRAMBLING_ENABLE | + LINK_QUAL_PATTERN_SET_DISABLE | + SW_TRAINING_PATTERN_SET_NORMAL; + writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET); + break; + default: + break; + } +} + +void analogix_dp_set_lane0_pre_emphasis(struct analogix_dp_device *dp, + u32 level) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_LN0_LINK_TRAINING_CTL); + reg &= ~PRE_EMPHASIS_SET_MASK; + reg |= level << PRE_EMPHASIS_SET_SHIFT; + writel(reg, dp->reg_base + ANALOGIX_DP_LN0_LINK_TRAINING_CTL); +} + +void analogix_dp_set_lane1_pre_emphasis(struct analogix_dp_device *dp, + u32 level) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_LN1_LINK_TRAINING_CTL); + reg &= ~PRE_EMPHASIS_SET_MASK; + reg |= level << PRE_EMPHASIS_SET_SHIFT; + writel(reg, dp->reg_base + ANALOGIX_DP_LN1_LINK_TRAINING_CTL); +} + +void analogix_dp_set_lane2_pre_emphasis(struct analogix_dp_device *dp, + u32 level) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_LN2_LINK_TRAINING_CTL); + reg &= ~PRE_EMPHASIS_SET_MASK; + reg |= level << PRE_EMPHASIS_SET_SHIFT; + writel(reg, dp->reg_base + ANALOGIX_DP_LN2_LINK_TRAINING_CTL); +} + +void analogix_dp_set_lane3_pre_emphasis(struct analogix_dp_device *dp, + u32 level) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_LN3_LINK_TRAINING_CTL); + reg &= ~PRE_EMPHASIS_SET_MASK; + reg |= level << PRE_EMPHASIS_SET_SHIFT; + writel(reg, dp->reg_base + ANALOGIX_DP_LN3_LINK_TRAINING_CTL); +} + +void analogix_dp_set_lane0_link_training(struct analogix_dp_device *dp, + u32 training_lane) +{ + u32 reg; + + reg = training_lane; + writel(reg, dp->reg_base + ANALOGIX_DP_LN0_LINK_TRAINING_CTL); +} + +void analogix_dp_set_lane1_link_training(struct analogix_dp_device *dp, + u32 training_lane) +{ + u32 reg; + + reg = training_lane; + writel(reg, dp->reg_base + ANALOGIX_DP_LN1_LINK_TRAINING_CTL); +} + +void analogix_dp_set_lane2_link_training(struct analogix_dp_device *dp, + u32 training_lane) +{ + u32 reg; + + reg = training_lane; + writel(reg, dp->reg_base + ANALOGIX_DP_LN2_LINK_TRAINING_CTL); +} + +void analogix_dp_set_lane3_link_training(struct analogix_dp_device *dp, + u32 training_lane) +{ + u32 reg; + + reg = training_lane; + writel(reg, dp->reg_base + ANALOGIX_DP_LN3_LINK_TRAINING_CTL); +} + +u32 analogix_dp_get_lane0_link_training(struct analogix_dp_device *dp) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_LN0_LINK_TRAINING_CTL); + return reg; +} + +u32 analogix_dp_get_lane1_link_training(struct analogix_dp_device *dp) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_LN1_LINK_TRAINING_CTL); + return reg; +} + +u32 analogix_dp_get_lane2_link_training(struct analogix_dp_device *dp) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_LN2_LINK_TRAINING_CTL); + return reg; +} + +u32 analogix_dp_get_lane3_link_training(struct analogix_dp_device *dp) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_LN3_LINK_TRAINING_CTL); + return reg; +} + +void analogix_dp_reset_macro(struct analogix_dp_device *dp) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_PHY_TEST); + reg |= MACRO_RST; + writel(reg, dp->reg_base + ANALOGIX_DP_PHY_TEST); + + /* 10 us is the minimum reset time. */ + usleep_range(10, 20); + + reg &= ~MACRO_RST; + writel(reg, dp->reg_base + ANALOGIX_DP_PHY_TEST); +} + +void analogix_dp_init_video(struct analogix_dp_device *dp) +{ + u32 reg; + + reg = VSYNC_DET | VID_FORMAT_CHG | VID_CLK_CHG; + writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_1); + + reg = 0x0; + writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_1); + + reg = CHA_CRI(4) | CHA_CTRL; + writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_2); + + reg = 0x0; + writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_3); + + reg = VID_HRES_TH(2) | VID_VRES_TH(0); + writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_8); +} + +void analogix_dp_set_video_color_format(struct analogix_dp_device *dp) +{ + u32 reg; + + /* Configure the input color depth, color space, dynamic range */ + reg = (dp->video_info->dynamic_range << IN_D_RANGE_SHIFT) | + (dp->video_info->color_depth << IN_BPC_SHIFT) | + (dp->video_info->color_space << IN_COLOR_F_SHIFT); + writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_2); + + /* Set Input Color YCbCr Coefficients to ITU601 or ITU709 */ + reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_3); + reg &= ~IN_YC_COEFFI_MASK; + if (dp->video_info->ycbcr_coeff) + reg |= IN_YC_COEFFI_ITU709; + else + reg |= IN_YC_COEFFI_ITU601; + writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_3); +} + +int analogix_dp_is_slave_video_stream_clock_on(struct analogix_dp_device *dp) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_1); + writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_1); + + reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_1); + + if (!(reg & DET_STA)) { + dev_dbg(dp->dev, "Input stream clock not detected.\n"); + return -EINVAL; + } + + reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_2); + writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_2); + + reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_2); + dev_dbg(dp->dev, "wait SYS_CTL_2.\n"); + + if (reg & CHA_STA) { + dev_dbg(dp->dev, "Input stream clk is changing\n"); + return -EINVAL; + } + + return 0; +} + +void analogix_dp_set_video_cr_mn(struct analogix_dp_device *dp, + enum clock_recovery_m_value_type type, + u32 m_value, u32 n_value) +{ + u32 reg; + + if (type == REGISTER_M) { + reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_4); + reg |= FIX_M_VID; + writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_4); + reg = m_value & 0xff; + writel(reg, dp->reg_base + ANALOGIX_DP_M_VID_0); + reg = (m_value >> 8) & 0xff; + writel(reg, dp->reg_base + ANALOGIX_DP_M_VID_1); + reg = (m_value >> 16) & 0xff; + writel(reg, dp->reg_base + ANALOGIX_DP_M_VID_2); + + reg = n_value & 0xff; + writel(reg, dp->reg_base + ANALOGIX_DP_N_VID_0); + reg = (n_value >> 8) & 0xff; + writel(reg, dp->reg_base + ANALOGIX_DP_N_VID_1); + reg = (n_value >> 16) & 0xff; + writel(reg, dp->reg_base + ANALOGIX_DP_N_VID_2); + } else { + reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_4); + reg &= ~FIX_M_VID; + writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_4); + + writel(0x00, dp->reg_base + ANALOGIX_DP_N_VID_0); + writel(0x80, dp->reg_base + ANALOGIX_DP_N_VID_1); + writel(0x00, dp->reg_base + ANALOGIX_DP_N_VID_2); + } +} + +void analogix_dp_set_video_timing_mode(struct analogix_dp_device *dp, u32 type) +{ + u32 reg; + + if (type == VIDEO_TIMING_FROM_CAPTURE) { + reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10); + reg &= ~FORMAT_SEL; + writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10); + } else { + reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10); + reg |= FORMAT_SEL; + writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10); + } +} + +void analogix_dp_enable_video_master(struct analogix_dp_device *dp, bool enable) +{ + u32 reg; + + if (enable) { + reg = readl(dp->reg_base + ANALOGIX_DP_SOC_GENERAL_CTL); + reg &= ~VIDEO_MODE_MASK; + reg |= VIDEO_MASTER_MODE_EN | VIDEO_MODE_MASTER_MODE; + writel(reg, dp->reg_base + ANALOGIX_DP_SOC_GENERAL_CTL); + } else { + reg = readl(dp->reg_base + ANALOGIX_DP_SOC_GENERAL_CTL); + reg &= ~VIDEO_MODE_MASK; + reg |= VIDEO_MODE_SLAVE_MODE; + writel(reg, dp->reg_base + ANALOGIX_DP_SOC_GENERAL_CTL); + } +} + +void analogix_dp_start_video(struct analogix_dp_device *dp) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1); + reg |= VIDEO_EN; + writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1); +} + +int analogix_dp_is_video_stream_on(struct analogix_dp_device *dp) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_3); + writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_3); + + reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_3); + if (!(reg & STRM_VALID)) { + dev_dbg(dp->dev, "Input video stream is not detected.\n"); + return -EINVAL; + } + + return 0; +} + +void analogix_dp_config_video_slave_mode(struct analogix_dp_device *dp) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_1); + reg &= ~(MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N); + reg |= MASTER_VID_FUNC_EN_N; + writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_1); + + reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10); + reg &= ~INTERACE_SCAN_CFG; + reg |= (dp->video_info->interlaced << 2); + writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10); + + reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10); + reg &= ~VSYNC_POLARITY_CFG; + reg |= (dp->video_info->v_sync_polarity << 1); + writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10); + + reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10); + reg &= ~HSYNC_POLARITY_CFG; + reg |= (dp->video_info->h_sync_polarity << 0); + writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10); + + reg = AUDIO_MODE_SPDIF_MODE | VIDEO_MODE_SLAVE_MODE; + writel(reg, dp->reg_base + ANALOGIX_DP_SOC_GENERAL_CTL); +} + +void analogix_dp_enable_scrambling(struct analogix_dp_device *dp) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET); + reg &= ~SCRAMBLING_DISABLE; + writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET); +} + +void analogix_dp_disable_scrambling(struct analogix_dp_device *dp) +{ + u32 reg; + + reg = readl(dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET); + reg |= SCRAMBLING_DISABLE; + writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET); +} diff --git a/drivers/gpu/drm/exynos/exynos_dp_reg.h b/drivers/gpu/drm/bridge/analogix_dp_reg.h similarity index 64% rename from drivers/gpu/drm/exynos/exynos_dp_reg.h rename to drivers/gpu/drm/bridge/analogix_dp_reg.h index 2e9bd0e..bed226f 100644 --- a/drivers/gpu/drm/exynos/exynos_dp_reg.h +++ b/drivers/gpu/drm/bridge/analogix_dp_reg.h @@ -1,5 +1,5 @@ /* - * Register definition file for Samsung DP driver + * Register definition file for Analogix Core DP driver * * Copyright (C) 2012 Samsung Electronics Co., Ltd. * Author: Jingoo Han <jg1.han@samsung.com> @@ -9,96 +9,96 @@ * published by the Free Software Foundation. */ -#ifndef _EXYNOS_DP_REG_H -#define _EXYNOS_DP_REG_H - -#define EXYNOS_DP_TX_SW_RESET 0x14 -#define EXYNOS_DP_FUNC_EN_1 0x18 -#define EXYNOS_DP_FUNC_EN_2 0x1C -#define EXYNOS_DP_VIDEO_CTL_1 0x20 -#define EXYNOS_DP_VIDEO_CTL_2 0x24 -#define EXYNOS_DP_VIDEO_CTL_3 0x28 - -#define EXYNOS_DP_VIDEO_CTL_8 0x3C -#define EXYNOS_DP_VIDEO_CTL_10 0x44 - -#define EXYNOS_DP_LANE_MAP 0x35C - -#define EXYNOS_DP_ANALOG_CTL_1 0x370 -#define EXYNOS_DP_ANALOG_CTL_2 0x374 -#define EXYNOS_DP_ANALOG_CTL_3 0x378 -#define EXYNOS_DP_PLL_FILTER_CTL_1 0x37C -#define EXYNOS_DP_TX_AMP_TUNING_CTL 0x380 - -#define EXYNOS_DP_AUX_HW_RETRY_CTL 0x390 - -#define EXYNOS_DP_COMMON_INT_STA_1 0x3C4 -#define EXYNOS_DP_COMMON_INT_STA_2 0x3C8 -#define EXYNOS_DP_COMMON_INT_STA_3 0x3CC -#define EXYNOS_DP_COMMON_INT_STA_4 0x3D0 -#define EXYNOS_DP_INT_STA 0x3DC -#define EXYNOS_DP_COMMON_INT_MASK_1 0x3E0 -#define EXYNOS_DP_COMMON_INT_MASK_2 0x3E4 -#define EXYNOS_DP_COMMON_INT_MASK_3 0x3E8 -#define EXYNOS_DP_COMMON_INT_MASK_4 0x3EC -#define EXYNOS_DP_INT_STA_MASK 0x3F8 -#define EXYNOS_DP_INT_CTL 0x3FC - -#define EXYNOS_DP_SYS_CTL_1 0x600 -#define EXYNOS_DP_SYS_CTL_2 0x604 -#define EXYNOS_DP_SYS_CTL_3 0x608 -#define EXYNOS_DP_SYS_CTL_4 0x60C - -#define EXYNOS_DP_PKT_SEND_CTL 0x640 -#define EXYNOS_DP_HDCP_CTL 0x648 - -#define EXYNOS_DP_LINK_BW_SET 0x680 -#define EXYNOS_DP_LANE_COUNT_SET 0x684 -#define EXYNOS_DP_TRAINING_PTN_SET 0x688 -#define EXYNOS_DP_LN0_LINK_TRAINING_CTL 0x68C -#define EXYNOS_DP_LN1_LINK_TRAINING_CTL 0x690 -#define EXYNOS_DP_LN2_LINK_TRAINING_CTL 0x694 -#define EXYNOS_DP_LN3_LINK_TRAINING_CTL 0x698 - -#define EXYNOS_DP_DEBUG_CTL 0x6C0 -#define EXYNOS_DP_HPD_DEGLITCH_L 0x6C4 -#define EXYNOS_DP_HPD_DEGLITCH_H 0x6C8 -#define EXYNOS_DP_LINK_DEBUG_CTL 0x6E0 - -#define EXYNOS_DP_M_VID_0 0x700 -#define EXYNOS_DP_M_VID_1 0x704 -#define EXYNOS_DP_M_VID_2 0x708 -#define EXYNOS_DP_N_VID_0 0x70C -#define EXYNOS_DP_N_VID_1 0x710 -#define EXYNOS_DP_N_VID_2 0x714 - -#define EXYNOS_DP_PLL_CTL 0x71C -#define EXYNOS_DP_PHY_PD 0x720 -#define EXYNOS_DP_PHY_TEST 0x724 - -#define EXYNOS_DP_VIDEO_FIFO_THRD 0x730 -#define EXYNOS_DP_AUDIO_MARGIN 0x73C - -#define EXYNOS_DP_M_VID_GEN_FILTER_TH 0x764 -#define EXYNOS_DP_M_AUD_GEN_FILTER_TH 0x778 -#define EXYNOS_DP_AUX_CH_STA 0x780 -#define EXYNOS_DP_AUX_CH_DEFER_CTL 0x788 -#define EXYNOS_DP_AUX_RX_COMM 0x78C -#define EXYNOS_DP_BUFFER_DATA_CTL 0x790 -#define EXYNOS_DP_AUX_CH_CTL_1 0x794 -#define EXYNOS_DP_AUX_ADDR_7_0 0x798 -#define EXYNOS_DP_AUX_ADDR_15_8 0x79C -#define EXYNOS_DP_AUX_ADDR_19_16 0x7A0 -#define EXYNOS_DP_AUX_CH_CTL_2 0x7A4 - -#define EXYNOS_DP_BUF_DATA_0 0x7C0 - -#define EXYNOS_DP_SOC_GENERAL_CTL 0x800 - -/* EXYNOS_DP_TX_SW_RESET */ +#ifndef _ANALOGIX_DP_REG_H +#define _ANALOGIX_DP_REG_H + +#define ANALOGIX_DP_TX_SW_RESET 0x14 +#define ANALOGIX_DP_FUNC_EN_1 0x18 +#define ANALOGIX_DP_FUNC_EN_2 0x1C +#define ANALOGIX_DP_VIDEO_CTL_1 0x20 +#define ANALOGIX_DP_VIDEO_CTL_2 0x24 +#define ANALOGIX_DP_VIDEO_CTL_3 0x28 + +#define ANALOGIX_DP_VIDEO_CTL_8 0x3C +#define ANALOGIX_DP_VIDEO_CTL_10 0x44 + +#define ANALOGIX_DP_LANE_MAP 0x35C + +#define ANALOGIX_DP_ANALOG_CTL_1 0x370 +#define ANALOGIX_DP_ANALOG_CTL_2 0x374 +#define ANALOGIX_DP_ANALOG_CTL_3 0x378 +#define ANALOGIX_DP_PLL_FILTER_CTL_1 0x37C +#define ANALOGIX_DP_TX_AMP_TUNING_CTL 0x380 + +#define ANALOGIX_DP_AUX_HW_RETRY_CTL 0x390 + +#define ANALOGIX_DP_COMMON_INT_STA_1 0x3C4 +#define ANALOGIX_DP_COMMON_INT_STA_2 0x3C8 +#define ANALOGIX_DP_COMMON_INT_STA_3 0x3CC +#define ANALOGIX_DP_COMMON_INT_STA_4 0x3D0 +#define ANALOGIX_DP_INT_STA 0x3DC +#define ANALOGIX_DP_COMMON_INT_MASK_1 0x3E0 +#define ANALOGIX_DP_COMMON_INT_MASK_2 0x3E4 +#define ANALOGIX_DP_COMMON_INT_MASK_3 0x3E8 +#define ANALOGIX_DP_COMMON_INT_MASK_4 0x3EC +#define ANALOGIX_DP_INT_STA_MASK 0x3F8 +#define ANALOGIX_DP_INT_CTL 0x3FC + +#define ANALOGIX_DP_SYS_CTL_1 0x600 +#define ANALOGIX_DP_SYS_CTL_2 0x604 +#define ANALOGIX_DP_SYS_CTL_3 0x608 +#define ANALOGIX_DP_SYS_CTL_4 0x60C + +#define ANALOGIX_DP_PKT_SEND_CTL 0x640 +#define ANALOGIX_DP_HDCP_CTL 0x648 + +#define ANALOGIX_DP_LINK_BW_SET 0x680 +#define ANALOGIX_DP_LANE_COUNT_SET 0x684 +#define ANALOGIX_DP_TRAINING_PTN_SET 0x688 +#define ANALOGIX_DP_LN0_LINK_TRAINING_CTL 0x68C +#define ANALOGIX_DP_LN1_LINK_TRAINING_CTL 0x690 +#define ANALOGIX_DP_LN2_LINK_TRAINING_CTL 0x694 +#define ANALOGIX_DP_LN3_LINK_TRAINING_CTL 0x698 + +#define ANALOGIX_DP_DEBUG_CTL 0x6C0 +#define ANALOGIX_DP_HPD_DEGLITCH_L 0x6C4 +#define ANALOGIX_DP_HPD_DEGLITCH_H 0x6C8 +#define ANALOGIX_DP_LINK_DEBUG_CTL 0x6E0 + +#define ANALOGIX_DP_M_VID_0 0x700 +#define ANALOGIX_DP_M_VID_1 0x704 +#define ANALOGIX_DP_M_VID_2 0x708 +#define ANALOGIX_DP_N_VID_0 0x70C +#define ANALOGIX_DP_N_VID_1 0x710 +#define ANALOGIX_DP_N_VID_2 0x714 + +#define ANALOGIX_DP_PLL_CTL 0x71C +#define ANALOGIX_DP_PHY_PD 0x720 +#define ANALOGIX_DP_PHY_TEST 0x724 + +#define ANALOGIX_DP_VIDEO_FIFO_THRD 0x730 +#define ANALOGIX_DP_AUDIO_MARGIN 0x73C + +#define ANALOGIX_DP_M_VID_GEN_FILTER_TH 0x764 +#define ANALOGIX_DP_M_AUD_GEN_FILTER_TH 0x778 +#define ANALOGIX_DP_AUX_CH_STA 0x780 +#define ANALOGIX_DP_AUX_CH_DEFER_CTL 0x788 +#define ANALOGIX_DP_AUX_RX_COMM 0x78C +#define ANALOGIX_DP_BUFFER_DATA_CTL 0x790 +#define ANALOGIX_DP_AUX_CH_CTL_1 0x794 +#define ANALOGIX_DP_AUX_ADDR_7_0 0x798 +#define ANALOGIX_DP_AUX_ADDR_15_8 0x79C +#define ANALOGIX_DP_AUX_ADDR_19_16 0x7A0 +#define ANALOGIX_DP_AUX_CH_CTL_2 0x7A4 + +#define ANALOGIX_DP_BUF_DATA_0 0x7C0 + +#define ANALOGIX_DP_SOC_GENERAL_CTL 0x800 + +/* ANALOGIX_DP_TX_SW_RESET */ #define RESET_DP_TX (0x1 << 0) -/* EXYNOS_DP_FUNC_EN_1 */ +/* ANALOGIX_DP_FUNC_EN_1 */ #define MASTER_VID_FUNC_EN_N (0x1 << 7) #define SLAVE_VID_FUNC_EN_N (0x1 << 5) #define AUD_FIFO_FUNC_EN_N (0x1 << 4) @@ -107,17 +107,17 @@ #define CRC_FUNC_EN_N (0x1 << 1) #define SW_FUNC_EN_N (0x1 << 0) -/* EXYNOS_DP_FUNC_EN_2 */ +/* ANALOGIX_DP_FUNC_EN_2 */ #define SSC_FUNC_EN_N (0x1 << 7) #define AUX_FUNC_EN_N (0x1 << 2) #define SERDES_FIFO_FUNC_EN_N (0x1 << 1) #define LS_CLK_DOMAIN_FUNC_EN_N (0x1 << 0) -/* EXYNOS_DP_VIDEO_CTL_1 */ +/* ANALOGIX_DP_VIDEO_CTL_1 */ #define VIDEO_EN (0x1 << 7) #define HDCP_VIDEO_MUTE (0x1 << 6) -/* EXYNOS_DP_VIDEO_CTL_1 */ +/* ANALOGIX_DP_VIDEO_CTL_1 */ #define IN_D_RANGE_MASK (0x1 << 7) #define IN_D_RANGE_SHIFT (7) #define IN_D_RANGE_CEA (0x1 << 7) @@ -134,7 +134,7 @@ #define IN_COLOR_F_YCBCR422 (0x1 << 0) #define IN_COLOR_F_RGB (0x0 << 0) -/* EXYNOS_DP_VIDEO_CTL_3 */ +/* ANALOGIX_DP_VIDEO_CTL_3 */ #define IN_YC_COEFFI_MASK (0x1 << 7) #define IN_YC_COEFFI_SHIFT (7) #define IN_YC_COEFFI_ITU709 (0x1 << 7) @@ -144,17 +144,17 @@ #define VID_CHK_UPDATE_TYPE_1 (0x1 << 4) #define VID_CHK_UPDATE_TYPE_0 (0x0 << 4) -/* EXYNOS_DP_VIDEO_CTL_8 */ +/* ANALOGIX_DP_VIDEO_CTL_8 */ #define VID_HRES_TH(x) (((x) & 0xf) << 4) #define VID_VRES_TH(x) (((x) & 0xf) << 0) -/* EXYNOS_DP_VIDEO_CTL_10 */ +/* ANALOGIX_DP_VIDEO_CTL_10 */ #define FORMAT_SEL (0x1 << 4) #define INTERACE_SCAN_CFG (0x1 << 2) #define VSYNC_POLARITY_CFG (0x1 << 1) #define HSYNC_POLARITY_CFG (0x1 << 0) -/* EXYNOS_DP_LANE_MAP */ +/* ANALOGIX_DP_LANE_MAP */ #define LANE3_MAP_LOGIC_LANE_0 (0x0 << 6) #define LANE3_MAP_LOGIC_LANE_1 (0x1 << 6) #define LANE3_MAP_LOGIC_LANE_2 (0x2 << 6) @@ -172,30 +172,30 @@ #define LANE0_MAP_LOGIC_LANE_2 (0x2 << 0) #define LANE0_MAP_LOGIC_LANE_3 (0x3 << 0) -/* EXYNOS_DP_ANALOG_CTL_1 */ +/* ANALOGIX_DP_ANALOG_CTL_1 */ #define TX_TERMINAL_CTRL_50_OHM (0x1 << 4) -/* EXYNOS_DP_ANALOG_CTL_2 */ +/* ANALOGIX_DP_ANALOG_CTL_2 */ #define SEL_24M (0x1 << 3) #define TX_DVDD_BIT_1_0625V (0x4 << 0) -/* EXYNOS_DP_ANALOG_CTL_3 */ +/* ANALOGIX_DP_ANALOG_CTL_3 */ #define DRIVE_DVDD_BIT_1_0625V (0x4 << 5) #define VCO_BIT_600_MICRO (0x5 << 0) -/* EXYNOS_DP_PLL_FILTER_CTL_1 */ +/* ANALOGIX_DP_PLL_FILTER_CTL_1 */ #define PD_RING_OSC (0x1 << 6) #define AUX_TERMINAL_CTRL_50_OHM (0x2 << 4) #define TX_CUR1_2X (0x1 << 2) #define TX_CUR_16_MA (0x3 << 0) -/* EXYNOS_DP_TX_AMP_TUNING_CTL */ +/* ANALOGIX_DP_TX_AMP_TUNING_CTL */ #define CH3_AMP_400_MV (0x0 << 24) #define CH2_AMP_400_MV (0x0 << 16) #define CH1_AMP_400_MV (0x0 << 8) #define CH0_AMP_400_MV (0x0 << 0) -/* EXYNOS_DP_AUX_HW_RETRY_CTL */ +/* ANALOGIX_DP_AUX_HW_RETRY_CTL */ #define AUX_BIT_PERIOD_EXPECTED_DELAY(x) (((x) & 0x7) << 8) #define AUX_HW_RETRY_INTERVAL_MASK (0x3 << 3) #define AUX_HW_RETRY_INTERVAL_600_MICROSECONDS (0x0 << 3) @@ -204,7 +204,7 @@ #define AUX_HW_RETRY_INTERVAL_1800_MICROSECONDS (0x3 << 3) #define AUX_HW_RETRY_COUNT_SEL(x) (((x) & 0x7) << 0) -/* EXYNOS_DP_COMMON_INT_STA_1 */ +/* ANALOGIX_DP_COMMON_INT_STA_1 */ #define VSYNC_DET (0x1 << 7) #define PLL_LOCK_CHG (0x1 << 6) #define SPDIF_ERR (0x1 << 5) @@ -214,19 +214,19 @@ #define VID_CLK_CHG (0x1 << 1) #define SW_INT (0x1 << 0) -/* EXYNOS_DP_COMMON_INT_STA_2 */ +/* ANALOGIX_DP_COMMON_INT_STA_2 */ #define ENC_EN_CHG (0x1 << 6) #define HW_BKSV_RDY (0x1 << 3) #define HW_SHA_DONE (0x1 << 2) #define HW_AUTH_STATE_CHG (0x1 << 1) #define HW_AUTH_DONE (0x1 << 0) -/* EXYNOS_DP_COMMON_INT_STA_3 */ +/* ANALOGIX_DP_COMMON_INT_STA_3 */ #define AFIFO_UNDER (0x1 << 7) #define AFIFO_OVER (0x1 << 6) #define R0_CHK_FLAG (0x1 << 5) -/* EXYNOS_DP_COMMON_INT_STA_4 */ +/* ANALOGIX_DP_COMMON_INT_STA_4 */ #define PSR_ACTIVE (0x1 << 7) #define PSR_INACTIVE (0x1 << 6) #define SPDIF_BI_PHASE_ERR (0x1 << 5) @@ -234,29 +234,29 @@ #define HPD_LOST (0x1 << 1) #define PLUG (0x1 << 0) -/* EXYNOS_DP_INT_STA */ +/* ANALOGIX_DP_INT_STA */ #define INT_HPD (0x1 << 6) #define HW_TRAINING_FINISH (0x1 << 5) #define RPLY_RECEIV (0x1 << 1) #define AUX_ERR (0x1 << 0) -/* EXYNOS_DP_INT_CTL */ +/* ANALOGIX_DP_INT_CTL */ #define SOFT_INT_CTRL (0x1 << 2) #define INT_POL1 (0x1 << 1) #define INT_POL0 (0x1 << 0) -/* EXYNOS_DP_SYS_CTL_1 */ +/* ANALOGIX_DP_SYS_CTL_1 */ #define DET_STA (0x1 << 2) #define FORCE_DET (0x1 << 1) #define DET_CTRL (0x1 << 0) -/* EXYNOS_DP_SYS_CTL_2 */ +/* ANALOGIX_DP_SYS_CTL_2 */ #define CHA_CRI(x) (((x) & 0xf) << 4) #define CHA_STA (0x1 << 2) #define FORCE_CHA (0x1 << 1) #define CHA_CTRL (0x1 << 0) -/* EXYNOS_DP_SYS_CTL_3 */ +/* ANALOGIX_DP_SYS_CTL_3 */ #define HPD_STATUS (0x1 << 6) #define F_HPD (0x1 << 5) #define HPD_CTRL (0x1 << 4) @@ -265,13 +265,13 @@ #define F_VALID (0x1 << 1) #define VALID_CTRL (0x1 << 0) -/* EXYNOS_DP_SYS_CTL_4 */ +/* ANALOGIX_DP_SYS_CTL_4 */ #define FIX_M_AUD (0x1 << 4) #define ENHANCED (0x1 << 3) #define FIX_M_VID (0x1 << 2) #define M_VID_UPDATE_CTRL (0x3 << 0) -/* EXYNOS_DP_TRAINING_PTN_SET */ +/* ANALOGIX_DP_TRAINING_PTN_SET */ #define SCRAMBLER_TYPE (0x1 << 9) #define HW_LINK_TRAINING_PATTERN (0x1 << 8) #define SCRAMBLING_DISABLE (0x1 << 5) @@ -285,24 +285,24 @@ #define SW_TRAINING_PATTERN_SET_PTN1 (0x1 << 0) #define SW_TRAINING_PATTERN_SET_NORMAL (0x0 << 0) -/* EXYNOS_DP_LN0_LINK_TRAINING_CTL */ +/* ANALOGIX_DP_LN0_LINK_TRAINING_CTL */ #define PRE_EMPHASIS_SET_MASK (0x3 << 3) #define PRE_EMPHASIS_SET_SHIFT (3) -/* EXYNOS_DP_DEBUG_CTL */ +/* ANALOGIX_DP_DEBUG_CTL */ #define PLL_LOCK (0x1 << 4) #define F_PLL_LOCK (0x1 << 3) #define PLL_LOCK_CTRL (0x1 << 2) #define PN_INV (0x1 << 0) -/* EXYNOS_DP_PLL_CTL */ +/* ANALOGIX_DP_PLL_CTL */ #define DP_PLL_PD (0x1 << 7) #define DP_PLL_RESET (0x1 << 6) #define DP_PLL_LOOP_BIT_DEFAULT (0x1 << 4) #define DP_PLL_REF_BIT_1_1250V (0x5 << 0) #define DP_PLL_REF_BIT_1_2500V (0x7 << 0) -/* EXYNOS_DP_PHY_PD */ +/* ANALOGIX_DP_PHY_PD */ #define DP_PHY_PD (0x1 << 5) #define AUX_PD (0x1 << 4) #define CH3_PD (0x1 << 3) @@ -310,28 +310,28 @@ #define CH1_PD (0x1 << 1) #define CH0_PD (0x1 << 0) -/* EXYNOS_DP_PHY_TEST */ +/* ANALOGIX_DP_PHY_TEST */ #define MACRO_RST (0x1 << 5) #define CH1_TEST (0x1 << 1) #define CH0_TEST (0x1 << 0) -/* EXYNOS_DP_AUX_CH_STA */ +/* ANALOGIX_DP_AUX_CH_STA */ #define AUX_BUSY (0x1 << 4) #define AUX_STATUS_MASK (0xf << 0) -/* EXYNOS_DP_AUX_CH_DEFER_CTL */ +/* ANALOGIX_DP_AUX_CH_DEFER_CTL */ #define DEFER_CTRL_EN (0x1 << 7) #define DEFER_COUNT(x) (((x) & 0x7f) << 0) -/* EXYNOS_DP_AUX_RX_COMM */ +/* ANALOGIX_DP_AUX_RX_COMM */ #define AUX_RX_COMM_I2C_DEFER (0x2 << 2) #define AUX_RX_COMM_AUX_DEFER (0x2 << 0) -/* EXYNOS_DP_BUFFER_DATA_CTL */ +/* ANALOGIX_DP_BUFFER_DATA_CTL */ #define BUF_CLR (0x1 << 7) #define BUF_DATA_COUNT(x) (((x) & 0x1f) << 0) -/* EXYNOS_DP_AUX_CH_CTL_1 */ +/* ANALOGIX_DP_AUX_CH_CTL_1 */ #define AUX_LENGTH(x) (((x - 1) & 0xf) << 4) #define AUX_TX_COMM_MASK (0xf << 0) #define AUX_TX_COMM_DP_TRANSACTION (0x1 << 3) @@ -340,20 +340,20 @@ #define AUX_TX_COMM_WRITE (0x0 << 0) #define AUX_TX_COMM_READ (0x1 << 0) -/* EXYNOS_DP_AUX_ADDR_7_0 */ +/* ANALOGIX_DP_AUX_ADDR_7_0 */ #define AUX_ADDR_7_0(x) (((x) >> 0) & 0xff) -/* EXYNOS_DP_AUX_ADDR_15_8 */ +/* ANALOGIX_DP_AUX_ADDR_15_8 */ #define AUX_ADDR_15_8(x) (((x) >> 8) & 0xff) -/* EXYNOS_DP_AUX_ADDR_19_16 */ +/* ANALOGIX_DP_AUX_ADDR_19_16 */ #define AUX_ADDR_19_16(x) (((x) >> 16) & 0x0f) -/* EXYNOS_DP_AUX_CH_CTL_2 */ +/* ANALOGIX_DP_AUX_CH_CTL_2 */ #define ADDR_ONLY (0x1 << 1) #define AUX_EN (0x1 << 0) -/* EXYNOS_DP_SOC_GENERAL_CTL */ +/* ANALOGIX_DP_SOC_GENERAL_CTL */ #define AUDIO_MODE_SPDIF_MODE (0x1 << 8) #define AUDIO_MODE_MASTER_MODE (0x0 << 8) #define MASTER_VIDEO_INTERLACE_EN (0x1 << 4) @@ -363,4 +363,4 @@ #define VIDEO_MODE_SLAVE_MODE (0x1 << 0) #define VIDEO_MODE_MASTER_MODE (0x0 << 0) -#endif /* _EXYNOS_DP_REG_H */ +#endif /* _ANALOGIX_DP_REG_H */ diff --git a/drivers/gpu/drm/exynos/Kconfig b/drivers/gpu/drm/exynos/Kconfig index 43003c4..b33549c 100644 --- a/drivers/gpu/drm/exynos/Kconfig +++ b/drivers/gpu/drm/exynos/Kconfig @@ -54,9 +54,10 @@ config DRM_EXYNOS_DSI help This enables support for Exynos MIPI-DSI device. -config DRM_EXYNOS_DP - bool "EXYNOS DRM DP driver support" +config DRM_EXYNOS_ANALOGIX_DP + bool "EXYNOS specific extensions for Analogix DP driver" depends on DRM_EXYNOS && (DRM_EXYNOS_FIMD || DRM_EXYNOS7_DECON) && (DRM_PTN3460=n || DRM_PTN3460=y || DRM_PTN3460=DRM_EXYNOS) + select DRM_ANALOGIX_DP default DRM_EXYNOS select DRM_PANEL help diff --git a/drivers/gpu/drm/exynos/Makefile b/drivers/gpu/drm/exynos/Makefile index 7de0b10..cda4d26 100644 --- a/drivers/gpu/drm/exynos/Makefile +++ b/drivers/gpu/drm/exynos/Makefile @@ -14,7 +14,7 @@ exynosdrm-$(CONFIG_DRM_EXYNOS5433_DECON) += exynos5433_drm_decon.o exynosdrm-$(CONFIG_DRM_EXYNOS7_DECON) += exynos7_drm_decon.o exynosdrm-$(CONFIG_DRM_EXYNOS_DPI) += exynos_drm_dpi.o exynosdrm-$(CONFIG_DRM_EXYNOS_DSI) += exynos_drm_dsi.o -exynosdrm-$(CONFIG_DRM_EXYNOS_DP) += exynos_dp_core.o exynos_dp_reg.o +exynosdrm-$(CONFIG_DRM_EXYNOS_ANALOGIX_DP) += analogix_dp-exynos.o exynosdrm-$(CONFIG_DRM_EXYNOS_HDMI) += exynos_hdmi.o exynos_mixer.o exynosdrm-$(CONFIG_DRM_EXYNOS_VIDI) += exynos_drm_vidi.o exynosdrm-$(CONFIG_DRM_EXYNOS_G2D) += exynos_drm_g2d.o diff --git a/drivers/gpu/drm/exynos/analogix_dp-exynos.c b/drivers/gpu/drm/exynos/analogix_dp-exynos.c new file mode 100644 index 0000000..d5631c2 --- /dev/null +++ b/drivers/gpu/drm/exynos/analogix_dp-exynos.c @@ -0,0 +1,291 @@ +/* + * Samsung SoC DP (Display Port) interface driver. + * + * Copyright (C) 2012 Samsung Electronics Co., Ltd. + * Author: Jingoo Han <jg1.han@samsung.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/err.h> +#include <linux/clk.h> +#include <linux/component.h> +#include <linux/of_graph.h> +#include <video/of_display_timing.h> +#include <video/of_videomode.h> + +#include <drm/drmP.h> +#include <drm/drm_panel.h> +#include <drm/bridge/ptn3460.h> +#include <drm/bridge/analogix_dp.h> + +#include <drm/exynos_drm.h> +#include "exynos_drm_drv.h" + +#define plat_data_to_dp(pd) \ + container_of(pd, struct exynos_dp_device, plat_data) + +struct exynos_dp_device { + struct exynos_drm_display display; + struct drm_bridge *ptn_bridge; + struct drm_device *drm_dev; + struct device *dev; + + struct exynos_drm_panel_info priv; + struct analogix_dp_plat_data plat_data; +}; + +int exynos_dp_crtc_clock_enable(struct analogix_dp_plat_data *plat_data, + bool enable) +{ + struct exynos_dp_device *dp = plat_data_to_dp(plat_data); + struct drm_encoder *encoder = dp->display.encoder; + struct exynos_drm_crtc *crtc; + + if (!encoder) + return -1; + + crtc = to_exynos_crtc(encoder->crtc); + if (crtc && crtc->ops && crtc->ops->clock_enable) + crtc->ops->clock_enable(crtc, enable); + + return 0; +} + +static int exynos_dp_poweron(struct analogix_dp_plat_data *plat_data) +{ + return exynos_dp_crtc_clock_enable(plat_data, true); +} + +static int exynos_dp_poweroff(struct analogix_dp_plat_data *plat_data) +{ + return exynos_dp_crtc_clock_enable(plat_data, false); +} + +static int exynos_dp_get_modes(struct analogix_dp_plat_data *plat_data, + struct drm_connector *connector) +{ + struct exynos_dp_device *dp = plat_data_to_dp(plat_data); + struct drm_display_mode *mode; + + if (dp->plat_data.panel) + return 0; + + mode = drm_mode_create(connector->dev); + if (!mode) { + DRM_ERROR("failed to create a new display mode.\n"); + return 0; + } + + drm_display_mode_from_videomode(&dp->priv.vm, mode); + mode->width_mm = dp->priv.width_mm; + mode->height_mm = dp->priv.height_mm; + connector->display_info.width_mm = mode->width_mm; + connector->display_info.height_mm = mode->height_mm; + + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; + drm_mode_set_name(mode); + drm_mode_probed_add(connector, mode); + + return 1; +} + +static int exynos_dp_bridge_attach(struct analogix_dp_plat_data *plat_data, + struct drm_bridge *bridge) +{ + struct exynos_dp_device *dp = plat_data_to_dp(plat_data); + struct drm_encoder *encoder = dp->display.encoder; + int ret; + + /* Pre-empt DP connector creation if there's a bridge */ + if (dp->ptn_bridge) { + bridge->next = dp->ptn_bridge; + dp->ptn_bridge->encoder = encoder; + ret = drm_bridge_attach(encoder->dev, dp->ptn_bridge); + if (ret) { + DRM_ERROR("Failed to attach bridge to drm\n"); + bridge->next = NULL; + return ret; + } + } + + return 0; +} + +static void exynos_dp_dpms(struct exynos_drm_display *display, int mode) +{ + /* do nothing */ +} + +static int exynos_dp_create_connector(struct exynos_drm_display *display, + struct drm_encoder *encoder) +{ + /* do nothing */ + return 0; +} + +static void exynos_dp_commit(struct exynos_drm_display *display) +{ + /* do nothing */ +} + +static struct exynos_drm_display_ops exynos_dp_display_ops = { + .create_connector = exynos_dp_create_connector, + .dpms = exynos_dp_dpms, + .commit = exynos_dp_commit, +}; + +static int exynos_dp_dt_parse_panel(struct exynos_dp_device *dp) +{ + int ret; + + ret = of_get_videomode(dp->dev->of_node, &dp->priv.vm, + OF_USE_NATIVE_MODE); + if (ret) { + DRM_ERROR("failed: of_get_videomode() : %d\n", ret); + return ret; + } + + return 0; +} + +static int exynos_dp_bind(struct device *dev, struct device *master, void *data) +{ + struct exynos_dp_device *dp = dev_get_drvdata(dev); + struct drm_device *drm_dev = data; + int ret; + + /* + * Just like the probe function said, we don't need the + * device drvrate anymore, we should leave the charge to + * analogix dp driver, set the device drvdata to NULL. + */ + dev_set_drvdata(dev, NULL); + + dp->dev = dev; + dp->drm_dev = drm_dev; + + dp->plat_data.power_on = exynos_dp_poweron; + dp->plat_data.power_off = exynos_dp_poweroff; + dp->plat_data.get_modes = exynos_dp_get_modes; + dp->plat_data.attach = exynos_dp_bridge_attach; + + if (!dp->plat_data.panel || !dp->ptn_bridge) { + ret = exynos_dp_dt_parse_panel(dp); + if (ret) + return ret; + } + + ret = exynos_drm_create_enc_conn(dp->drm_dev, &dp->display); + if (ret) { + DRM_ERROR("exynos dp create enc_conn failed\n"); + return ret; + } + + return analogix_dp_bind(dev, dp->drm_dev, dp->display.encoder, + &dp->plat_data); +} + +static void exynos_dp_unbind(struct device *dev, struct device *master, + void *data) +{ + return analogix_dp_unbind(dev, master, data); +} + +static const struct component_ops exynos_dp_ops = { + .bind = exynos_dp_bind, + .unbind = exynos_dp_unbind, +}; + +static int exynos_dp_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *panel_node, *bridge_node, *endpoint; + struct exynos_dp_device *dp; + + dp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_dp_device), + GFP_KERNEL); + if (!dp) + return -ENOMEM; + + /* + * We just use the drvdata until driver run into component + * add function, and then we would set drvdata to null, so + * that analogix dp driver would take charge of the drvdata. + */ + platform_set_drvdata(pdev, dp); + + dp->display.type = EXYNOS_DISPLAY_TYPE_LCD; + dp->display.ops = &exynos_dp_display_ops; + + panel_node = of_parse_phandle(dev->of_node, "panel", 0); + if (panel_node) { + dp->plat_data.panel = of_drm_find_panel(panel_node); + of_node_put(panel_node); + if (!dp->plat_data.panel) + return -EPROBE_DEFER; + } + + endpoint = of_graph_get_next_endpoint(dev->of_node, NULL); + if (endpoint) { + bridge_node = of_graph_get_remote_port_parent(endpoint); + if (bridge_node) { + dp->ptn_bridge = of_drm_find_bridge(bridge_node); + of_node_put(bridge_node); + if (!dp->ptn_bridge) + return -EPROBE_DEFER; + } else { + return -EPROBE_DEFER; + } + } + + return component_add(&pdev->dev, &exynos_dp_ops); +} + +static int exynos_dp_remove(struct platform_device *pdev) +{ + component_del(&pdev->dev, &exynos_dp_ops); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int exynos_dp_suspend(struct device *dev) +{ + return analogix_dp_suspend(dev); +} + +static int exynos_dp_resume(struct device *dev) +{ + return analogix_dp_resume(dev); +} +#endif + +static const struct dev_pm_ops exynos_dp_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(exynos_dp_suspend, exynos_dp_resume) +}; + +static const struct of_device_id exynos_dp_match[] = { + { .compatible = "samsung,exynos5-dp" }, + {}, +}; +MODULE_DEVICE_TABLE(of, exynos_dp_match); + +struct platform_driver dp_driver = { + .probe = exynos_dp_probe, + .remove = exynos_dp_remove, + .driver = { + .name = "exynos-dp", + .owner = THIS_MODULE, + .pm = &exynos_dp_pm_ops, + .of_match_table = exynos_dp_match, + }, +}; + +MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>"); +MODULE_DESCRIPTION("Samsung Specific Analogix-DP Driver Extension"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.h b/drivers/gpu/drm/exynos/exynos_dp_core.h deleted file mode 100644 index 29bd56e..0000000 --- a/drivers/gpu/drm/exynos/exynos_dp_core.h +++ /dev/null @@ -1,282 +0,0 @@ -/* - * Header file for Samsung DP (Display Port) interface driver. - * - * Copyright (C) 2012 Samsung Electronics Co., Ltd. - * Author: Jingoo Han <jg1.han@samsung.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ - -#ifndef _EXYNOS_DP_CORE_H -#define _EXYNOS_DP_CORE_H - -#include <drm/drm_crtc.h> -#include <drm/drm_dp_helper.h> -#include <drm/exynos_drm.h> - -#include "exynos_drm_drv.h" - -#define DP_TIMEOUT_LOOP_COUNT 100 -#define MAX_CR_LOOP 5 -#define MAX_EQ_LOOP 5 - -enum link_rate_type { - LINK_RATE_1_62GBPS = 0x06, - LINK_RATE_2_70GBPS = 0x0a -}; - -enum link_lane_count_type { - LANE_COUNT1 = 1, - LANE_COUNT2 = 2, - LANE_COUNT4 = 4 -}; - -enum link_training_state { - START, - CLOCK_RECOVERY, - EQUALIZER_TRAINING, - FINISHED, - FAILED -}; - -enum voltage_swing_level { - VOLTAGE_LEVEL_0, - VOLTAGE_LEVEL_1, - VOLTAGE_LEVEL_2, - VOLTAGE_LEVEL_3, -}; - -enum pre_emphasis_level { - PRE_EMPHASIS_LEVEL_0, - PRE_EMPHASIS_LEVEL_1, - PRE_EMPHASIS_LEVEL_2, - PRE_EMPHASIS_LEVEL_3, -}; - -enum pattern_set { - PRBS7, - D10_2, - TRAINING_PTN1, - TRAINING_PTN2, - DP_NONE -}; - -enum color_space { - COLOR_RGB, - COLOR_YCBCR422, - COLOR_YCBCR444 -}; - -enum color_depth { - COLOR_6, - COLOR_8, - COLOR_10, - COLOR_12 -}; - -enum color_coefficient { - COLOR_YCBCR601, - COLOR_YCBCR709 -}; - -enum dynamic_range { - VESA, - CEA -}; - -enum pll_status { - PLL_UNLOCKED, - PLL_LOCKED -}; - -enum clock_recovery_m_value_type { - CALCULATED_M, - REGISTER_M -}; - -enum video_timing_recognition_type { - VIDEO_TIMING_FROM_CAPTURE, - VIDEO_TIMING_FROM_REGISTER -}; - -enum analog_power_block { - AUX_BLOCK, - CH0_BLOCK, - CH1_BLOCK, - CH2_BLOCK, - CH3_BLOCK, - ANALOG_TOTAL, - POWER_ALL -}; - -enum dp_irq_type { - DP_IRQ_TYPE_HP_CABLE_IN, - DP_IRQ_TYPE_HP_CABLE_OUT, - DP_IRQ_TYPE_HP_CHANGE, - DP_IRQ_TYPE_UNKNOWN, -}; - -struct video_info { - char *name; - - bool h_sync_polarity; - bool v_sync_polarity; - bool interlaced; - - enum color_space color_space; - enum dynamic_range dynamic_range; - enum color_coefficient ycbcr_coeff; - enum color_depth color_depth; - - enum link_rate_type link_rate; - enum link_lane_count_type lane_count; -}; - -struct link_train { - int eq_loop; - int cr_loop[4]; - - u8 link_rate; - u8 lane_count; - u8 training_lane[4]; - - enum link_training_state lt_state; -}; - -struct exynos_dp_device { - struct exynos_drm_display display; - struct device *dev; - struct drm_device *drm_dev; - struct drm_connector connector; - struct drm_encoder *encoder; - struct drm_panel *panel; - struct drm_bridge *bridge; - struct drm_bridge *ptn_bridge; - struct clk *clock; - unsigned int irq; - void __iomem *reg_base; - - struct video_info *video_info; - struct link_train link_train; - struct work_struct hotplug_work; - struct phy *phy; - int dpms_mode; - int hpd_gpio; - - struct exynos_drm_panel_info priv; -}; - -/* exynos_dp_reg.c */ -void exynos_dp_enable_video_mute(struct exynos_dp_device *dp, bool enable); -void exynos_dp_stop_video(struct exynos_dp_device *dp); -void exynos_dp_lane_swap(struct exynos_dp_device *dp, bool enable); -void exynos_dp_init_analog_param(struct exynos_dp_device *dp); -void exynos_dp_init_interrupt(struct exynos_dp_device *dp); -void exynos_dp_reset(struct exynos_dp_device *dp); -void exynos_dp_swreset(struct exynos_dp_device *dp); -void exynos_dp_config_interrupt(struct exynos_dp_device *dp); -enum pll_status exynos_dp_get_pll_lock_status(struct exynos_dp_device *dp); -void exynos_dp_set_pll_power_down(struct exynos_dp_device *dp, bool enable); -void exynos_dp_set_analog_power_down(struct exynos_dp_device *dp, - enum analog_power_block block, - bool enable); -void exynos_dp_init_analog_func(struct exynos_dp_device *dp); -void exynos_dp_init_hpd(struct exynos_dp_device *dp); -enum dp_irq_type exynos_dp_get_irq_type(struct exynos_dp_device *dp); -void exynos_dp_clear_hotplug_interrupts(struct exynos_dp_device *dp); -void exynos_dp_reset_aux(struct exynos_dp_device *dp); -void exynos_dp_init_aux(struct exynos_dp_device *dp); -int exynos_dp_get_plug_in_status(struct exynos_dp_device *dp); -void exynos_dp_enable_sw_function(struct exynos_dp_device *dp); -int exynos_dp_start_aux_transaction(struct exynos_dp_device *dp); -int exynos_dp_write_byte_to_dpcd(struct exynos_dp_device *dp, - unsigned int reg_addr, - unsigned char data); -int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp, - unsigned int reg_addr, - unsigned char *data); -int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp, - unsigned int reg_addr, - unsigned int count, - unsigned char data[]); -int exynos_dp_read_bytes_from_dpcd(struct exynos_dp_device *dp, - unsigned int reg_addr, - unsigned int count, - unsigned char data[]); -int exynos_dp_select_i2c_device(struct exynos_dp_device *dp, - unsigned int device_addr, - unsigned int reg_addr); -int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp, - unsigned int device_addr, - unsigned int reg_addr, - unsigned int *data); -int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp, - unsigned int device_addr, - unsigned int reg_addr, - unsigned int count, - unsigned char edid[]); -void exynos_dp_set_link_bandwidth(struct exynos_dp_device *dp, u32 bwtype); -void exynos_dp_get_link_bandwidth(struct exynos_dp_device *dp, u32 *bwtype); -void exynos_dp_set_lane_count(struct exynos_dp_device *dp, u32 count); -void exynos_dp_get_lane_count(struct exynos_dp_device *dp, u32 *count); -void exynos_dp_enable_enhanced_mode(struct exynos_dp_device *dp, bool enable); -void exynos_dp_set_training_pattern(struct exynos_dp_device *dp, - enum pattern_set pattern); -void exynos_dp_set_lane0_pre_emphasis(struct exynos_dp_device *dp, u32 level); -void exynos_dp_set_lane1_pre_emphasis(struct exynos_dp_device *dp, u32 level); -void exynos_dp_set_lane2_pre_emphasis(struct exynos_dp_device *dp, u32 level); -void exynos_dp_set_lane3_pre_emphasis(struct exynos_dp_device *dp, u32 level); -void exynos_dp_set_lane0_link_training(struct exynos_dp_device *dp, - u32 training_lane); -void exynos_dp_set_lane1_link_training(struct exynos_dp_device *dp, - u32 training_lane); -void exynos_dp_set_lane2_link_training(struct exynos_dp_device *dp, - u32 training_lane); -void exynos_dp_set_lane3_link_training(struct exynos_dp_device *dp, - u32 training_lane); -u32 exynos_dp_get_lane0_link_training(struct exynos_dp_device *dp); -u32 exynos_dp_get_lane1_link_training(struct exynos_dp_device *dp); -u32 exynos_dp_get_lane2_link_training(struct exynos_dp_device *dp); -u32 exynos_dp_get_lane3_link_training(struct exynos_dp_device *dp); -void exynos_dp_reset_macro(struct exynos_dp_device *dp); -void exynos_dp_init_video(struct exynos_dp_device *dp); - -void exynos_dp_set_video_color_format(struct exynos_dp_device *dp); -int exynos_dp_is_slave_video_stream_clock_on(struct exynos_dp_device *dp); -void exynos_dp_set_video_cr_mn(struct exynos_dp_device *dp, - enum clock_recovery_m_value_type type, - u32 m_value, u32 n_value); -void exynos_dp_set_video_timing_mode(struct exynos_dp_device *dp, u32 type); -void exynos_dp_enable_video_master(struct exynos_dp_device *dp, bool enable); -void exynos_dp_start_video(struct exynos_dp_device *dp); -int exynos_dp_is_video_stream_on(struct exynos_dp_device *dp); -void exynos_dp_config_video_slave_mode(struct exynos_dp_device *dp); -void exynos_dp_enable_scrambling(struct exynos_dp_device *dp); -void exynos_dp_disable_scrambling(struct exynos_dp_device *dp); - -/* I2C EDID Chip ID, Slave Address */ -#define I2C_EDID_DEVICE_ADDR 0x50 -#define I2C_E_EDID_DEVICE_ADDR 0x30 - -#define EDID_BLOCK_LENGTH 0x80 -#define EDID_HEADER_PATTERN 0x00 -#define EDID_EXTENSION_FLAG 0x7e -#define EDID_CHECKSUM 0x7f - -/* DP_MAX_LANE_COUNT */ -#define DPCD_ENHANCED_FRAME_CAP(x) (((x) >> 7) & 0x1) -#define DPCD_MAX_LANE_COUNT(x) ((x) & 0x1f) - -/* DP_LANE_COUNT_SET */ -#define DPCD_LANE_COUNT_SET(x) ((x) & 0x1f) - -/* DP_TRAINING_LANE0_SET */ -#define DPCD_PRE_EMPHASIS_SET(x) (((x) & 0x3) << 3) -#define DPCD_PRE_EMPHASIS_GET(x) (((x) >> 3) & 0x3) -#define DPCD_VOLTAGE_SWING_SET(x) (((x) & 0x3) << 0) -#define DPCD_VOLTAGE_SWING_GET(x) (((x) >> 0) & 0x3) - -#endif /* _EXYNOS_DP_CORE_H */ diff --git a/drivers/gpu/drm/exynos/exynos_dp_reg.c b/drivers/gpu/drm/exynos/exynos_dp_reg.c deleted file mode 100644 index 9aa483d..0000000 --- a/drivers/gpu/drm/exynos/exynos_dp_reg.c +++ /dev/null @@ -1,1259 +0,0 @@ -/* - * Samsung DP (Display port) register interface driver. - * - * Copyright (C) 2012 Samsung Electronics Co., Ltd. - * Author: Jingoo Han <jg1.han@samsung.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ - -#include <linux/device.h> -#include <linux/io.h> -#include <linux/delay.h> -#include <linux/gpio.h> - -#include "exynos_dp_core.h" -#include "exynos_dp_reg.h" - -#define COMMON_INT_MASK_1 0 -#define COMMON_INT_MASK_2 0 -#define COMMON_INT_MASK_3 0 -#define COMMON_INT_MASK_4 (HOTPLUG_CHG | HPD_LOST | PLUG) -#define INT_STA_MASK INT_HPD - -void exynos_dp_enable_video_mute(struct exynos_dp_device *dp, bool enable) -{ - u32 reg; - - if (enable) { - reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_1); - reg |= HDCP_VIDEO_MUTE; - writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_1); - } else { - reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_1); - reg &= ~HDCP_VIDEO_MUTE; - writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_1); - } -} - -void exynos_dp_stop_video(struct exynos_dp_device *dp) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_1); - reg &= ~VIDEO_EN; - writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_1); -} - -void exynos_dp_lane_swap(struct exynos_dp_device *dp, bool enable) -{ - u32 reg; - - if (enable) - reg = LANE3_MAP_LOGIC_LANE_0 | LANE2_MAP_LOGIC_LANE_1 | - LANE1_MAP_LOGIC_LANE_2 | LANE0_MAP_LOGIC_LANE_3; - else - reg = LANE3_MAP_LOGIC_LANE_3 | LANE2_MAP_LOGIC_LANE_2 | - LANE1_MAP_LOGIC_LANE_1 | LANE0_MAP_LOGIC_LANE_0; - - writel(reg, dp->reg_base + EXYNOS_DP_LANE_MAP); -} - -void exynos_dp_init_analog_param(struct exynos_dp_device *dp) -{ - u32 reg; - - reg = TX_TERMINAL_CTRL_50_OHM; - writel(reg, dp->reg_base + EXYNOS_DP_ANALOG_CTL_1); - - reg = SEL_24M | TX_DVDD_BIT_1_0625V; - writel(reg, dp->reg_base + EXYNOS_DP_ANALOG_CTL_2); - - reg = DRIVE_DVDD_BIT_1_0625V | VCO_BIT_600_MICRO; - writel(reg, dp->reg_base + EXYNOS_DP_ANALOG_CTL_3); - - reg = PD_RING_OSC | AUX_TERMINAL_CTRL_50_OHM | - TX_CUR1_2X | TX_CUR_16_MA; - writel(reg, dp->reg_base + EXYNOS_DP_PLL_FILTER_CTL_1); - - reg = CH3_AMP_400_MV | CH2_AMP_400_MV | - CH1_AMP_400_MV | CH0_AMP_400_MV; - writel(reg, dp->reg_base + EXYNOS_DP_TX_AMP_TUNING_CTL); -} - -void exynos_dp_init_interrupt(struct exynos_dp_device *dp) -{ - /* Set interrupt pin assertion polarity as high */ - writel(INT_POL1 | INT_POL0, dp->reg_base + EXYNOS_DP_INT_CTL); - - /* Clear pending regisers */ - writel(0xff, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_1); - writel(0x4f, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_2); - writel(0xe0, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_3); - writel(0xe7, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_4); - writel(0x63, dp->reg_base + EXYNOS_DP_INT_STA); - - /* 0:mask,1: unmask */ - writel(0x00, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_1); - writel(0x00, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_2); - writel(0x00, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_3); - writel(0x00, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_4); - writel(0x00, dp->reg_base + EXYNOS_DP_INT_STA_MASK); -} - -void exynos_dp_reset(struct exynos_dp_device *dp) -{ - u32 reg; - - exynos_dp_stop_video(dp); - exynos_dp_enable_video_mute(dp, 0); - - reg = MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N | - AUD_FIFO_FUNC_EN_N | AUD_FUNC_EN_N | - HDCP_FUNC_EN_N | SW_FUNC_EN_N; - writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_1); - - reg = SSC_FUNC_EN_N | AUX_FUNC_EN_N | - SERDES_FIFO_FUNC_EN_N | - LS_CLK_DOMAIN_FUNC_EN_N; - writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_2); - - usleep_range(20, 30); - - exynos_dp_lane_swap(dp, 0); - - writel(0x0, dp->reg_base + EXYNOS_DP_SYS_CTL_1); - writel(0x40, dp->reg_base + EXYNOS_DP_SYS_CTL_2); - writel(0x0, dp->reg_base + EXYNOS_DP_SYS_CTL_3); - writel(0x0, dp->reg_base + EXYNOS_DP_SYS_CTL_4); - - writel(0x0, dp->reg_base + EXYNOS_DP_PKT_SEND_CTL); - writel(0x0, dp->reg_base + EXYNOS_DP_HDCP_CTL); - - writel(0x5e, dp->reg_base + EXYNOS_DP_HPD_DEGLITCH_L); - writel(0x1a, dp->reg_base + EXYNOS_DP_HPD_DEGLITCH_H); - - writel(0x10, dp->reg_base + EXYNOS_DP_LINK_DEBUG_CTL); - - writel(0x0, dp->reg_base + EXYNOS_DP_PHY_TEST); - - writel(0x0, dp->reg_base + EXYNOS_DP_VIDEO_FIFO_THRD); - writel(0x20, dp->reg_base + EXYNOS_DP_AUDIO_MARGIN); - - writel(0x4, dp->reg_base + EXYNOS_DP_M_VID_GEN_FILTER_TH); - writel(0x2, dp->reg_base + EXYNOS_DP_M_AUD_GEN_FILTER_TH); - - writel(0x00000101, dp->reg_base + EXYNOS_DP_SOC_GENERAL_CTL); -} - -void exynos_dp_swreset(struct exynos_dp_device *dp) -{ - writel(RESET_DP_TX, dp->reg_base + EXYNOS_DP_TX_SW_RESET); -} - -void exynos_dp_config_interrupt(struct exynos_dp_device *dp) -{ - u32 reg; - - /* 0: mask, 1: unmask */ - reg = COMMON_INT_MASK_1; - writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_1); - - reg = COMMON_INT_MASK_2; - writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_2); - - reg = COMMON_INT_MASK_3; - writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_3); - - reg = COMMON_INT_MASK_4; - writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_4); - - reg = INT_STA_MASK; - writel(reg, dp->reg_base + EXYNOS_DP_INT_STA_MASK); -} - -enum pll_status exynos_dp_get_pll_lock_status(struct exynos_dp_device *dp) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_DEBUG_CTL); - if (reg & PLL_LOCK) - return PLL_LOCKED; - else - return PLL_UNLOCKED; -} - -void exynos_dp_set_pll_power_down(struct exynos_dp_device *dp, bool enable) -{ - u32 reg; - - if (enable) { - reg = readl(dp->reg_base + EXYNOS_DP_PLL_CTL); - reg |= DP_PLL_PD; - writel(reg, dp->reg_base + EXYNOS_DP_PLL_CTL); - } else { - reg = readl(dp->reg_base + EXYNOS_DP_PLL_CTL); - reg &= ~DP_PLL_PD; - writel(reg, dp->reg_base + EXYNOS_DP_PLL_CTL); - } -} - -void exynos_dp_set_analog_power_down(struct exynos_dp_device *dp, - enum analog_power_block block, - bool enable) -{ - u32 reg; - - switch (block) { - case AUX_BLOCK: - if (enable) { - reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD); - reg |= AUX_PD; - writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD); - } else { - reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD); - reg &= ~AUX_PD; - writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD); - } - break; - case CH0_BLOCK: - if (enable) { - reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD); - reg |= CH0_PD; - writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD); - } else { - reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD); - reg &= ~CH0_PD; - writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD); - } - break; - case CH1_BLOCK: - if (enable) { - reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD); - reg |= CH1_PD; - writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD); - } else { - reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD); - reg &= ~CH1_PD; - writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD); - } - break; - case CH2_BLOCK: - if (enable) { - reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD); - reg |= CH2_PD; - writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD); - } else { - reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD); - reg &= ~CH2_PD; - writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD); - } - break; - case CH3_BLOCK: - if (enable) { - reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD); - reg |= CH3_PD; - writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD); - } else { - reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD); - reg &= ~CH3_PD; - writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD); - } - break; - case ANALOG_TOTAL: - if (enable) { - reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD); - reg |= DP_PHY_PD; - writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD); - } else { - reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD); - reg &= ~DP_PHY_PD; - writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD); - } - break; - case POWER_ALL: - if (enable) { - reg = DP_PHY_PD | AUX_PD | CH3_PD | CH2_PD | - CH1_PD | CH0_PD; - writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD); - } else { - writel(0x00, dp->reg_base + EXYNOS_DP_PHY_PD); - } - break; - default: - break; - } -} - -void exynos_dp_init_analog_func(struct exynos_dp_device *dp) -{ - u32 reg; - int timeout_loop = 0; - - exynos_dp_set_analog_power_down(dp, POWER_ALL, 0); - - reg = PLL_LOCK_CHG; - writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_1); - - reg = readl(dp->reg_base + EXYNOS_DP_DEBUG_CTL); - reg &= ~(F_PLL_LOCK | PLL_LOCK_CTRL); - writel(reg, dp->reg_base + EXYNOS_DP_DEBUG_CTL); - - /* Power up PLL */ - if (exynos_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) { - exynos_dp_set_pll_power_down(dp, 0); - - while (exynos_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) { - timeout_loop++; - if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) { - dev_err(dp->dev, "failed to get pll lock status\n"); - return; - } - usleep_range(10, 20); - } - } - - /* Enable Serdes FIFO function and Link symbol clock domain module */ - reg = readl(dp->reg_base + EXYNOS_DP_FUNC_EN_2); - reg &= ~(SERDES_FIFO_FUNC_EN_N | LS_CLK_DOMAIN_FUNC_EN_N - | AUX_FUNC_EN_N); - writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_2); -} - -void exynos_dp_clear_hotplug_interrupts(struct exynos_dp_device *dp) -{ - u32 reg; - - if (gpio_is_valid(dp->hpd_gpio)) - return; - - reg = HOTPLUG_CHG | HPD_LOST | PLUG; - writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_4); - - reg = INT_HPD; - writel(reg, dp->reg_base + EXYNOS_DP_INT_STA); -} - -void exynos_dp_init_hpd(struct exynos_dp_device *dp) -{ - u32 reg; - - if (gpio_is_valid(dp->hpd_gpio)) - return; - - exynos_dp_clear_hotplug_interrupts(dp); - - reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_3); - reg &= ~(F_HPD | HPD_CTRL); - writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_3); -} - -enum dp_irq_type exynos_dp_get_irq_type(struct exynos_dp_device *dp) -{ - u32 reg; - - if (gpio_is_valid(dp->hpd_gpio)) { - reg = gpio_get_value(dp->hpd_gpio); - if (reg) - return DP_IRQ_TYPE_HP_CABLE_IN; - else - return DP_IRQ_TYPE_HP_CABLE_OUT; - } else { - /* Parse hotplug interrupt status register */ - reg = readl(dp->reg_base + EXYNOS_DP_COMMON_INT_STA_4); - - if (reg & PLUG) - return DP_IRQ_TYPE_HP_CABLE_IN; - - if (reg & HPD_LOST) - return DP_IRQ_TYPE_HP_CABLE_OUT; - - if (reg & HOTPLUG_CHG) - return DP_IRQ_TYPE_HP_CHANGE; - - return DP_IRQ_TYPE_UNKNOWN; - } -} - -void exynos_dp_reset_aux(struct exynos_dp_device *dp) -{ - u32 reg; - - /* Disable AUX channel module */ - reg = readl(dp->reg_base + EXYNOS_DP_FUNC_EN_2); - reg |= AUX_FUNC_EN_N; - writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_2); -} - -void exynos_dp_init_aux(struct exynos_dp_device *dp) -{ - u32 reg; - - /* Clear inerrupts related to AUX channel */ - reg = RPLY_RECEIV | AUX_ERR; - writel(reg, dp->reg_base + EXYNOS_DP_INT_STA); - - exynos_dp_reset_aux(dp); - - /* Disable AUX transaction H/W retry */ - reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3) | AUX_HW_RETRY_COUNT_SEL(0) | - AUX_HW_RETRY_INTERVAL_600_MICROSECONDS; - writel(reg, dp->reg_base + EXYNOS_DP_AUX_HW_RETRY_CTL); - - /* Receive AUX Channel DEFER commands equal to DEFFER_COUNT*64 */ - reg = DEFER_CTRL_EN | DEFER_COUNT(1); - writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_DEFER_CTL); - - /* Enable AUX channel module */ - reg = readl(dp->reg_base + EXYNOS_DP_FUNC_EN_2); - reg &= ~AUX_FUNC_EN_N; - writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_2); -} - -int exynos_dp_get_plug_in_status(struct exynos_dp_device *dp) -{ - u32 reg; - - if (gpio_is_valid(dp->hpd_gpio)) { - if (gpio_get_value(dp->hpd_gpio)) - return 0; - } else { - reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_3); - if (reg & HPD_STATUS) - return 0; - } - - return -EINVAL; -} - -void exynos_dp_enable_sw_function(struct exynos_dp_device *dp) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_FUNC_EN_1); - reg &= ~SW_FUNC_EN_N; - writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_1); -} - -int exynos_dp_start_aux_transaction(struct exynos_dp_device *dp) -{ - int reg; - int retval = 0; - int timeout_loop = 0; - - /* Enable AUX CH operation */ - reg = readl(dp->reg_base + EXYNOS_DP_AUX_CH_CTL_2); - reg |= AUX_EN; - writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_2); - - /* Is AUX CH command reply received? */ - reg = readl(dp->reg_base + EXYNOS_DP_INT_STA); - while (!(reg & RPLY_RECEIV)) { - timeout_loop++; - if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) { - dev_err(dp->dev, "AUX CH command reply failed!\n"); - return -ETIMEDOUT; - } - reg = readl(dp->reg_base + EXYNOS_DP_INT_STA); - usleep_range(10, 11); - } - - /* Clear interrupt source for AUX CH command reply */ - writel(RPLY_RECEIV, dp->reg_base + EXYNOS_DP_INT_STA); - - /* Clear interrupt source for AUX CH access error */ - reg = readl(dp->reg_base + EXYNOS_DP_INT_STA); - if (reg & AUX_ERR) { - writel(AUX_ERR, dp->reg_base + EXYNOS_DP_INT_STA); - return -EREMOTEIO; - } - - /* Check AUX CH error access status */ - reg = readl(dp->reg_base + EXYNOS_DP_AUX_CH_STA); - if ((reg & AUX_STATUS_MASK) != 0) { - dev_err(dp->dev, "AUX CH error happens: %d\n\n", - reg & AUX_STATUS_MASK); - return -EREMOTEIO; - } - - return retval; -} - -int exynos_dp_write_byte_to_dpcd(struct exynos_dp_device *dp, - unsigned int reg_addr, - unsigned char data) -{ - u32 reg; - int i; - int retval; - - for (i = 0; i < 3; i++) { - /* Clear AUX CH data buffer */ - reg = BUF_CLR; - writel(reg, dp->reg_base + EXYNOS_DP_BUFFER_DATA_CTL); - - /* Select DPCD device address */ - reg = AUX_ADDR_7_0(reg_addr); - writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_7_0); - reg = AUX_ADDR_15_8(reg_addr); - writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_15_8); - reg = AUX_ADDR_19_16(reg_addr); - writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_19_16); - - /* Write data buffer */ - reg = (unsigned int)data; - writel(reg, dp->reg_base + EXYNOS_DP_BUF_DATA_0); - - /* - * Set DisplayPort transaction and write 1 byte - * If bit 3 is 1, DisplayPort transaction. - * If Bit 3 is 0, I2C transaction. - */ - reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE; - writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_1); - - /* Start AUX transaction */ - retval = exynos_dp_start_aux_transaction(dp); - if (retval == 0) - break; - - dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__); - } - - return retval; -} - -int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp, - unsigned int reg_addr, - unsigned char *data) -{ - u32 reg; - int i; - int retval; - - for (i = 0; i < 3; i++) { - /* Clear AUX CH data buffer */ - reg = BUF_CLR; - writel(reg, dp->reg_base + EXYNOS_DP_BUFFER_DATA_CTL); - - /* Select DPCD device address */ - reg = AUX_ADDR_7_0(reg_addr); - writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_7_0); - reg = AUX_ADDR_15_8(reg_addr); - writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_15_8); - reg = AUX_ADDR_19_16(reg_addr); - writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_19_16); - - /* - * Set DisplayPort transaction and read 1 byte - * If bit 3 is 1, DisplayPort transaction. - * If Bit 3 is 0, I2C transaction. - */ - reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ; - writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_1); - - /* Start AUX transaction */ - retval = exynos_dp_start_aux_transaction(dp); - if (retval == 0) - break; - - dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__); - } - - /* Read data buffer */ - reg = readl(dp->reg_base + EXYNOS_DP_BUF_DATA_0); - *data = (unsigned char)(reg & 0xff); - - return retval; -} - -int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp, - unsigned int reg_addr, - unsigned int count, - unsigned char data[]) -{ - u32 reg; - unsigned int start_offset; - unsigned int cur_data_count; - unsigned int cur_data_idx; - int i; - int retval = 0; - - /* Clear AUX CH data buffer */ - reg = BUF_CLR; - writel(reg, dp->reg_base + EXYNOS_DP_BUFFER_DATA_CTL); - - start_offset = 0; - while (start_offset < count) { - /* Buffer size of AUX CH is 16 * 4bytes */ - if ((count - start_offset) > 16) - cur_data_count = 16; - else - cur_data_count = count - start_offset; - - for (i = 0; i < 3; i++) { - /* Select DPCD device address */ - reg = AUX_ADDR_7_0(reg_addr + start_offset); - writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_7_0); - reg = AUX_ADDR_15_8(reg_addr + start_offset); - writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_15_8); - reg = AUX_ADDR_19_16(reg_addr + start_offset); - writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_19_16); - - for (cur_data_idx = 0; cur_data_idx < cur_data_count; - cur_data_idx++) { - reg = data[start_offset + cur_data_idx]; - writel(reg, dp->reg_base + EXYNOS_DP_BUF_DATA_0 - + 4 * cur_data_idx); - } - - /* - * Set DisplayPort transaction and write - * If bit 3 is 1, DisplayPort transaction. - * If Bit 3 is 0, I2C transaction. - */ - reg = AUX_LENGTH(cur_data_count) | - AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE; - writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_1); - - /* Start AUX transaction */ - retval = exynos_dp_start_aux_transaction(dp); - if (retval == 0) - break; - - dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", - __func__); - } - - start_offset += cur_data_count; - } - - return retval; -} - -int exynos_dp_read_bytes_from_dpcd(struct exynos_dp_device *dp, - unsigned int reg_addr, - unsigned int count, - unsigned char data[]) -{ - u32 reg; - unsigned int start_offset; - unsigned int cur_data_count; - unsigned int cur_data_idx; - int i; - int retval = 0; - - /* Clear AUX CH data buffer */ - reg = BUF_CLR; - writel(reg, dp->reg_base + EXYNOS_DP_BUFFER_DATA_CTL); - - start_offset = 0; - while (start_offset < count) { - /* Buffer size of AUX CH is 16 * 4bytes */ - if ((count - start_offset) > 16) - cur_data_count = 16; - else - cur_data_count = count - start_offset; - - /* AUX CH Request Transaction process */ - for (i = 0; i < 3; i++) { - /* Select DPCD device address */ - reg = AUX_ADDR_7_0(reg_addr + start_offset); - writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_7_0); - reg = AUX_ADDR_15_8(reg_addr + start_offset); - writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_15_8); - reg = AUX_ADDR_19_16(reg_addr + start_offset); - writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_19_16); - - /* - * Set DisplayPort transaction and read - * If bit 3 is 1, DisplayPort transaction. - * If Bit 3 is 0, I2C transaction. - */ - reg = AUX_LENGTH(cur_data_count) | - AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ; - writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_1); - - /* Start AUX transaction */ - retval = exynos_dp_start_aux_transaction(dp); - if (retval == 0) - break; - - dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", - __func__); - } - - for (cur_data_idx = 0; cur_data_idx < cur_data_count; - cur_data_idx++) { - reg = readl(dp->reg_base + EXYNOS_DP_BUF_DATA_0 - + 4 * cur_data_idx); - data[start_offset + cur_data_idx] = - (unsigned char)reg; - } - - start_offset += cur_data_count; - } - - return retval; -} - -int exynos_dp_select_i2c_device(struct exynos_dp_device *dp, - unsigned int device_addr, - unsigned int reg_addr) -{ - u32 reg; - int retval; - - /* Set EDID device address */ - reg = device_addr; - writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_7_0); - writel(0x0, dp->reg_base + EXYNOS_DP_AUX_ADDR_15_8); - writel(0x0, dp->reg_base + EXYNOS_DP_AUX_ADDR_19_16); - - /* Set offset from base address of EDID device */ - writel(reg_addr, dp->reg_base + EXYNOS_DP_BUF_DATA_0); - - /* - * Set I2C transaction and write address - * If bit 3 is 1, DisplayPort transaction. - * If Bit 3 is 0, I2C transaction. - */ - reg = AUX_TX_COMM_I2C_TRANSACTION | AUX_TX_COMM_MOT | - AUX_TX_COMM_WRITE; - writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_1); - - /* Start AUX transaction */ - retval = exynos_dp_start_aux_transaction(dp); - if (retval != 0) - dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__); - - return retval; -} - -int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp, - unsigned int device_addr, - unsigned int reg_addr, - unsigned int *data) -{ - u32 reg; - int i; - int retval; - - for (i = 0; i < 3; i++) { - /* Clear AUX CH data buffer */ - reg = BUF_CLR; - writel(reg, dp->reg_base + EXYNOS_DP_BUFFER_DATA_CTL); - - /* Select EDID device */ - retval = exynos_dp_select_i2c_device(dp, device_addr, reg_addr); - if (retval != 0) - continue; - - /* - * Set I2C transaction and read data - * If bit 3 is 1, DisplayPort transaction. - * If Bit 3 is 0, I2C transaction. - */ - reg = AUX_TX_COMM_I2C_TRANSACTION | - AUX_TX_COMM_READ; - writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_1); - - /* Start AUX transaction */ - retval = exynos_dp_start_aux_transaction(dp); - if (retval == 0) - break; - - dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__); - } - - /* Read data */ - if (retval == 0) - *data = readl(dp->reg_base + EXYNOS_DP_BUF_DATA_0); - - return retval; -} - -int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp, - unsigned int device_addr, - unsigned int reg_addr, - unsigned int count, - unsigned char edid[]) -{ - u32 reg; - unsigned int i, j; - unsigned int cur_data_idx; - unsigned int defer = 0; - int retval = 0; - - for (i = 0; i < count; i += 16) { - for (j = 0; j < 3; j++) { - /* Clear AUX CH data buffer */ - reg = BUF_CLR; - writel(reg, dp->reg_base + EXYNOS_DP_BUFFER_DATA_CTL); - - /* Set normal AUX CH command */ - reg = readl(dp->reg_base + EXYNOS_DP_AUX_CH_CTL_2); - reg &= ~ADDR_ONLY; - writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_2); - - /* - * If Rx sends defer, Tx sends only reads - * request without sending address - */ - if (!defer) - retval = exynos_dp_select_i2c_device( - dp, device_addr, reg_addr + i); - else - defer = 0; - - if (retval == 0) { - /* - * Set I2C transaction and write data - * If bit 3 is 1, DisplayPort transaction. - * If Bit 3 is 0, I2C transaction. - */ - reg = AUX_LENGTH(16) | - AUX_TX_COMM_I2C_TRANSACTION | - AUX_TX_COMM_READ; - writel(reg, dp->reg_base + - EXYNOS_DP_AUX_CH_CTL_1); - - /* Start AUX transaction */ - retval = exynos_dp_start_aux_transaction(dp); - if (retval == 0) - break; - - dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", - __func__); - } - /* Check if Rx sends defer */ - reg = readl(dp->reg_base + EXYNOS_DP_AUX_RX_COMM); - if (reg == AUX_RX_COMM_AUX_DEFER || - reg == AUX_RX_COMM_I2C_DEFER) { - dev_err(dp->dev, "Defer: %d\n\n", reg); - defer = 1; - } - } - - for (cur_data_idx = 0; cur_data_idx < 16; cur_data_idx++) { - reg = readl(dp->reg_base + EXYNOS_DP_BUF_DATA_0 - + 4 * cur_data_idx); - edid[i + cur_data_idx] = (unsigned char)reg; - } - } - - return retval; -} - -void exynos_dp_set_link_bandwidth(struct exynos_dp_device *dp, u32 bwtype) -{ - u32 reg; - - reg = bwtype; - if ((bwtype == LINK_RATE_2_70GBPS) || (bwtype == LINK_RATE_1_62GBPS)) - writel(reg, dp->reg_base + EXYNOS_DP_LINK_BW_SET); -} - -void exynos_dp_get_link_bandwidth(struct exynos_dp_device *dp, u32 *bwtype) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_LINK_BW_SET); - *bwtype = reg; -} - -void exynos_dp_set_lane_count(struct exynos_dp_device *dp, u32 count) -{ - u32 reg; - - reg = count; - writel(reg, dp->reg_base + EXYNOS_DP_LANE_COUNT_SET); -} - -void exynos_dp_get_lane_count(struct exynos_dp_device *dp, u32 *count) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_LANE_COUNT_SET); - *count = reg; -} - -void exynos_dp_enable_enhanced_mode(struct exynos_dp_device *dp, bool enable) -{ - u32 reg; - - if (enable) { - reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_4); - reg |= ENHANCED; - writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_4); - } else { - reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_4); - reg &= ~ENHANCED; - writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_4); - } -} - -void exynos_dp_set_training_pattern(struct exynos_dp_device *dp, - enum pattern_set pattern) -{ - u32 reg; - - switch (pattern) { - case PRBS7: - reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_PRBS7; - writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET); - break; - case D10_2: - reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_D10_2; - writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET); - break; - case TRAINING_PTN1: - reg = SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN1; - writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET); - break; - case TRAINING_PTN2: - reg = SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN2; - writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET); - break; - case DP_NONE: - reg = SCRAMBLING_ENABLE | - LINK_QUAL_PATTERN_SET_DISABLE | - SW_TRAINING_PATTERN_SET_NORMAL; - writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET); - break; - default: - break; - } -} - -void exynos_dp_set_lane0_pre_emphasis(struct exynos_dp_device *dp, u32 level) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_LN0_LINK_TRAINING_CTL); - reg &= ~PRE_EMPHASIS_SET_MASK; - reg |= level << PRE_EMPHASIS_SET_SHIFT; - writel(reg, dp->reg_base + EXYNOS_DP_LN0_LINK_TRAINING_CTL); -} - -void exynos_dp_set_lane1_pre_emphasis(struct exynos_dp_device *dp, u32 level) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_LN1_LINK_TRAINING_CTL); - reg &= ~PRE_EMPHASIS_SET_MASK; - reg |= level << PRE_EMPHASIS_SET_SHIFT; - writel(reg, dp->reg_base + EXYNOS_DP_LN1_LINK_TRAINING_CTL); -} - -void exynos_dp_set_lane2_pre_emphasis(struct exynos_dp_device *dp, u32 level) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_LN2_LINK_TRAINING_CTL); - reg &= ~PRE_EMPHASIS_SET_MASK; - reg |= level << PRE_EMPHASIS_SET_SHIFT; - writel(reg, dp->reg_base + EXYNOS_DP_LN2_LINK_TRAINING_CTL); -} - -void exynos_dp_set_lane3_pre_emphasis(struct exynos_dp_device *dp, u32 level) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_LN3_LINK_TRAINING_CTL); - reg &= ~PRE_EMPHASIS_SET_MASK; - reg |= level << PRE_EMPHASIS_SET_SHIFT; - writel(reg, dp->reg_base + EXYNOS_DP_LN3_LINK_TRAINING_CTL); -} - -void exynos_dp_set_lane0_link_training(struct exynos_dp_device *dp, - u32 training_lane) -{ - u32 reg; - - reg = training_lane; - writel(reg, dp->reg_base + EXYNOS_DP_LN0_LINK_TRAINING_CTL); -} - -void exynos_dp_set_lane1_link_training(struct exynos_dp_device *dp, - u32 training_lane) -{ - u32 reg; - - reg = training_lane; - writel(reg, dp->reg_base + EXYNOS_DP_LN1_LINK_TRAINING_CTL); -} - -void exynos_dp_set_lane2_link_training(struct exynos_dp_device *dp, - u32 training_lane) -{ - u32 reg; - - reg = training_lane; - writel(reg, dp->reg_base + EXYNOS_DP_LN2_LINK_TRAINING_CTL); -} - -void exynos_dp_set_lane3_link_training(struct exynos_dp_device *dp, - u32 training_lane) -{ - u32 reg; - - reg = training_lane; - writel(reg, dp->reg_base + EXYNOS_DP_LN3_LINK_TRAINING_CTL); -} - -u32 exynos_dp_get_lane0_link_training(struct exynos_dp_device *dp) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_LN0_LINK_TRAINING_CTL); - return reg; -} - -u32 exynos_dp_get_lane1_link_training(struct exynos_dp_device *dp) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_LN1_LINK_TRAINING_CTL); - return reg; -} - -u32 exynos_dp_get_lane2_link_training(struct exynos_dp_device *dp) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_LN2_LINK_TRAINING_CTL); - return reg; -} - -u32 exynos_dp_get_lane3_link_training(struct exynos_dp_device *dp) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_LN3_LINK_TRAINING_CTL); - return reg; -} - -void exynos_dp_reset_macro(struct exynos_dp_device *dp) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_PHY_TEST); - reg |= MACRO_RST; - writel(reg, dp->reg_base + EXYNOS_DP_PHY_TEST); - - /* 10 us is the minimum reset time. */ - usleep_range(10, 20); - - reg &= ~MACRO_RST; - writel(reg, dp->reg_base + EXYNOS_DP_PHY_TEST); -} - -void exynos_dp_init_video(struct exynos_dp_device *dp) -{ - u32 reg; - - reg = VSYNC_DET | VID_FORMAT_CHG | VID_CLK_CHG; - writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_1); - - reg = 0x0; - writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_1); - - reg = CHA_CRI(4) | CHA_CTRL; - writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_2); - - reg = 0x0; - writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_3); - - reg = VID_HRES_TH(2) | VID_VRES_TH(0); - writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_8); -} - -void exynos_dp_set_video_color_format(struct exynos_dp_device *dp) -{ - u32 reg; - - /* Configure the input color depth, color space, dynamic range */ - reg = (dp->video_info->dynamic_range << IN_D_RANGE_SHIFT) | - (dp->video_info->color_depth << IN_BPC_SHIFT) | - (dp->video_info->color_space << IN_COLOR_F_SHIFT); - writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_2); - - /* Set Input Color YCbCr Coefficients to ITU601 or ITU709 */ - reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_3); - reg &= ~IN_YC_COEFFI_MASK; - if (dp->video_info->ycbcr_coeff) - reg |= IN_YC_COEFFI_ITU709; - else - reg |= IN_YC_COEFFI_ITU601; - writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_3); -} - -int exynos_dp_is_slave_video_stream_clock_on(struct exynos_dp_device *dp) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_1); - writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_1); - - reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_1); - - if (!(reg & DET_STA)) { - dev_dbg(dp->dev, "Input stream clock not detected.\n"); - return -EINVAL; - } - - reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_2); - writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_2); - - reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_2); - dev_dbg(dp->dev, "wait SYS_CTL_2.\n"); - - if (reg & CHA_STA) { - dev_dbg(dp->dev, "Input stream clk is changing\n"); - return -EINVAL; - } - - return 0; -} - -void exynos_dp_set_video_cr_mn(struct exynos_dp_device *dp, - enum clock_recovery_m_value_type type, - u32 m_value, - u32 n_value) -{ - u32 reg; - - if (type == REGISTER_M) { - reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_4); - reg |= FIX_M_VID; - writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_4); - reg = m_value & 0xff; - writel(reg, dp->reg_base + EXYNOS_DP_M_VID_0); - reg = (m_value >> 8) & 0xff; - writel(reg, dp->reg_base + EXYNOS_DP_M_VID_1); - reg = (m_value >> 16) & 0xff; - writel(reg, dp->reg_base + EXYNOS_DP_M_VID_2); - - reg = n_value & 0xff; - writel(reg, dp->reg_base + EXYNOS_DP_N_VID_0); - reg = (n_value >> 8) & 0xff; - writel(reg, dp->reg_base + EXYNOS_DP_N_VID_1); - reg = (n_value >> 16) & 0xff; - writel(reg, dp->reg_base + EXYNOS_DP_N_VID_2); - } else { - reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_4); - reg &= ~FIX_M_VID; - writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_4); - - writel(0x00, dp->reg_base + EXYNOS_DP_N_VID_0); - writel(0x80, dp->reg_base + EXYNOS_DP_N_VID_1); - writel(0x00, dp->reg_base + EXYNOS_DP_N_VID_2); - } -} - -void exynos_dp_set_video_timing_mode(struct exynos_dp_device *dp, u32 type) -{ - u32 reg; - - if (type == VIDEO_TIMING_FROM_CAPTURE) { - reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_10); - reg &= ~FORMAT_SEL; - writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_10); - } else { - reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_10); - reg |= FORMAT_SEL; - writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_10); - } -} - -void exynos_dp_enable_video_master(struct exynos_dp_device *dp, bool enable) -{ - u32 reg; - - if (enable) { - reg = readl(dp->reg_base + EXYNOS_DP_SOC_GENERAL_CTL); - reg &= ~VIDEO_MODE_MASK; - reg |= VIDEO_MASTER_MODE_EN | VIDEO_MODE_MASTER_MODE; - writel(reg, dp->reg_base + EXYNOS_DP_SOC_GENERAL_CTL); - } else { - reg = readl(dp->reg_base + EXYNOS_DP_SOC_GENERAL_CTL); - reg &= ~VIDEO_MODE_MASK; - reg |= VIDEO_MODE_SLAVE_MODE; - writel(reg, dp->reg_base + EXYNOS_DP_SOC_GENERAL_CTL); - } -} - -void exynos_dp_start_video(struct exynos_dp_device *dp) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_1); - reg |= VIDEO_EN; - writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_1); -} - -int exynos_dp_is_video_stream_on(struct exynos_dp_device *dp) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_3); - writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_3); - - reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_3); - if (!(reg & STRM_VALID)) { - dev_dbg(dp->dev, "Input video stream is not detected.\n"); - return -EINVAL; - } - - return 0; -} - -void exynos_dp_config_video_slave_mode(struct exynos_dp_device *dp) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_FUNC_EN_1); - reg &= ~(MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N); - reg |= MASTER_VID_FUNC_EN_N; - writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_1); - - reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_10); - reg &= ~INTERACE_SCAN_CFG; - reg |= (dp->video_info->interlaced << 2); - writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_10); - - reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_10); - reg &= ~VSYNC_POLARITY_CFG; - reg |= (dp->video_info->v_sync_polarity << 1); - writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_10); - - reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_10); - reg &= ~HSYNC_POLARITY_CFG; - reg |= (dp->video_info->h_sync_polarity << 0); - writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_10); - - reg = AUDIO_MODE_SPDIF_MODE | VIDEO_MODE_SLAVE_MODE; - writel(reg, dp->reg_base + EXYNOS_DP_SOC_GENERAL_CTL); -} - -void exynos_dp_enable_scrambling(struct exynos_dp_device *dp) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET); - reg &= ~SCRAMBLING_DISABLE; - writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET); -} - -void exynos_dp_disable_scrambling(struct exynos_dp_device *dp) -{ - u32 reg; - - reg = readl(dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET); - reg |= SCRAMBLING_DISABLE; - writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET); -} diff --git a/include/drm/bridge/analogix_dp.h b/include/drm/bridge/analogix_dp.h new file mode 100644 index 0000000..8b4ffad --- /dev/null +++ b/include/drm/bridge/analogix_dp.h @@ -0,0 +1,24 @@ +#ifndef _ANALOGIX_DP_H_ +#define _ANALOGIX_DP_H_ + +#include <drm/drm_crtc.h> + +struct analogix_dp_plat_data { + struct drm_panel *panel; + + int (*power_on)(struct analogix_dp_plat_data *); + int (*power_off)(struct analogix_dp_plat_data *); + int (*attach)(struct analogix_dp_plat_data *, struct drm_bridge *); + int (*get_modes)(struct analogix_dp_plat_data *, + struct drm_connector *); +}; + +int analogix_dp_resume(struct device *dev); +int analogix_dp_suspend(struct device *dev); + +int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev, + struct drm_encoder *encoder, + struct analogix_dp_plat_data *plat_data); +void analogix_dp_unbind(struct device *dev, struct device *master, void *data); + +#endif /* _ANALOGIX_DP_H_ */

[v3,03/14] drm: bridge: analogix_dp: split exynos dp driver to bridge dir

Commit Message

Patch