@@ -21,6 +21,14 @@ config DRM_MEDIATEK
This driver provides kernel mode setting and
buffer management to userspace.
+config DRM_MEDIATEK_DP
+ tristate "DRM DPTX Support for MediaTek SoCs"
+ depends on DRM_MEDIATEK
+ select PHY_MTK_DP
+ select DRM_DP_HELPER
+ help
+ DRM/KMS Display Port driver for MediaTek SoCs.
+
config DRM_MEDIATEK_HDMI
tristate "DRM HDMI Support for Mediatek SoCs"
depends on DRM_MEDIATEK
@@ -25,3 +25,5 @@ mediatek-drm-hdmi-objs := mtk_cec.o \
mtk_hdmi_ddc.o
obj-$(CONFIG_DRM_MEDIATEK_HDMI) += mediatek-drm-hdmi.o
+
+obj-$(CONFIG_DRM_MEDIATEK_DP) += mtk_dp.o
new file mode 100644
@@ -0,0 +1,2241 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019-2022 MediaTek Inc.
+ * Copyright (c) 2022 BayLibre
+ */
+
+#include <drm/display/drm_dp.h>
+#include <drm/display/drm_dp_helper.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_of.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+#include <linux/arm-smccc.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/nvmem-consumer.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <sound/hdmi-codec.h>
+#include <video/videomode.h>
+
+#include "mtk_dp_reg.h"
+
+#define MTK_DP_SIP_CONTROL_AARCH32 0x82000523
+
+#define MTK_VDOSYS1_MAX_FRAMERATE 60
+#define MTK_DP_4P1T 4
+#define MTK_DP_HDE 2
+#define MTK_DP_PIX_PER_ADDR 2
+#define MTK_DP_AUX_WAIT_REPLY_COUNT 20
+#define MTK_DP_CHECK_SINK_CAP_TIMEOUT_COUNT 3
+#define MTK_DP_TBC_BUF_READ_START_ADDR 0x08
+#define MTK_DP_TRAIN_RETRY_LIMIT 8
+#define MTK_DP_TRAIN_MAX_ITERATIONS 5
+#define MTK_DP_DP_VERSION_11 0x11
+
+enum mtk_dp_train_state {
+ MTK_DP_TRAIN_STATE_TRAINING,
+ MTK_DP_TRAIN_STATE_NORMAL,
+};
+
+struct mtk_dp_timings {
+ struct videomode vm;
+ u8 frame_rate;
+ u32 pix_rate_khz;
+};
+
+struct mtk_dp_irq_sta {
+ bool hpd_connect;
+ bool hpd_disconnect;
+ bool hpd_inerrupt;
+};
+
+struct mtk_dp_train_info {
+ bool tps3;
+ bool tps4;
+ bool sink_ssc;
+ bool cable_plugged_in;
+ bool cable_state_change;
+ bool cr_done;
+ bool eq_done;
+ /* link_rate is in multiple of 0.27Gbps */
+ int link_rate;
+ int lane_count;
+ struct mtk_dp_irq_sta irq_sta;
+};
+
+/* multiple of 0.27Gbps */
+enum mtk_dp_linkrate {
+ MTK_DP_LINKRATE_RBR = 0x6,
+ MTK_DP_LINKRATE_HBR = 0xA,
+ MTK_DP_LINKRATE_HBR2 = 0x14,
+ MTK_DP_LINKRATE_HBR25 = 0x19,
+ MTK_DP_LINKRATE_HBR3 = 0x1E,
+};
+
+struct mtk_dp_info {
+ u32 depth;
+ enum dp_pixelformat format;
+ struct mtk_dp_timings timings;
+};
+
+struct dp_cal_data {
+ unsigned int glb_bias_trim;
+ unsigned int clktx_impse;
+
+ unsigned int ln_tx_impsel_pmos[4];
+ unsigned int ln_tx_impsel_nmos[4];
+};
+
+struct mtk_dp {
+ struct device *dev;
+ struct platform_device *phy_dev;
+ struct phy *phy;
+ struct dp_cal_data cal_data;
+ u8 max_lanes;
+ u8 max_linkrate;
+
+ struct drm_device *drm_dev;
+ struct drm_bridge bridge;
+ struct drm_bridge *next_bridge;
+ struct drm_dp_aux aux;
+
+ u8 rx_cap[DP_RECEIVER_CAP_SIZE];
+
+ struct mtk_dp_info info;
+
+ struct mtk_dp_train_info train_info;
+ enum mtk_dp_train_state train_state;
+ unsigned int input_fmt;
+
+ struct regmap *regs;
+
+ bool enabled;
+
+ /* protect the mtk_dp struct */
+ struct mutex dp_lock;
+
+ struct drm_connector *conn;
+};
+
+static struct regmap_config mtk_dp_regmap_config = {
+ .reg_bits = 32,
+ .val_bits = 32,
+ .reg_stride = 4,
+ .max_register = SEC_OFFSET + 0x90,
+ .name = "mtk-dp-registers",
+};
+
+static struct mtk_dp *mtk_dp_from_bridge(struct drm_bridge *b)
+{
+ return container_of(b, struct mtk_dp, bridge);
+}
+
+static u32 mtk_dp_read(struct mtk_dp *mtk_dp, u32 offset)
+{
+ u32 read_val;
+ int ret;
+
+ ret = regmap_read(mtk_dp->regs, offset, &read_val);
+ if (ret) {
+ dev_err(mtk_dp->dev, "Failed to read register 0x%x: %d\n",
+ offset, ret);
+ return 0;
+ }
+
+ return read_val;
+}
+
+static void mtk_dp_write(struct mtk_dp *mtk_dp, u32 offset, u32 val)
+{
+ if (regmap_write(mtk_dp->regs, offset, val))
+ dev_err(mtk_dp->dev,
+ "Failed to write register 0x%x with value 0x%x\n",
+ offset, val);
+}
+
+static void mtk_dp_update_bits(struct mtk_dp *mtk_dp, u32 offset,
+ u32 val, u32 mask)
+{
+ if (regmap_update_bits(mtk_dp->regs, offset, mask, val))
+ dev_err(mtk_dp->dev,
+ "Failed to update register 0x%x with value 0x%x, mask 0x%x\n",
+ offset, val, mask);
+}
+
+static void mtk_dp_bulk_16bit_write(struct mtk_dp *mtk_dp, u32 offset, u8 *buf,
+ size_t length)
+{
+ int i;
+ int num_regs = (length + 1) / 2;
+
+ /* 2 bytes per register */
+ for (i = 0; i < num_regs; i++) {
+ u32 val = buf[i * 2] |
+ (i * 2 + 1 < length ? buf[i * 2 + 1] << 8 : 0);
+
+ mtk_dp_write(mtk_dp, offset + i * 4, val);
+ }
+}
+
+static unsigned long mtk_dp_sip_atf_call(struct mtk_dp *mtk_dp,
+ unsigned int cmd, unsigned int para)
+{
+ struct arm_smccc_res res;
+
+ arm_smccc_smc(MTK_DP_SIP_CONTROL_AARCH32, cmd, para, 0, 0, 0, 0, 0,
+ &res);
+
+ dev_dbg(mtk_dp->dev, "sip cmd 0x%x, p1 0x%x, ret 0x%lx-0x%lx",
+ cmd, para, res.a0, res.a1);
+
+ return res.a1;
+}
+
+static void mtk_dp_msa_bypass_disable(struct mtk_dp *mtk_dp)
+{
+ u16 val = BIT(HTOTAL_SEL_DP_ENC0_P0_SHIFT) |
+ BIT(VTOTAL_SEL_DP_ENC0_P0_SHIFT) |
+ BIT(HSTART_SEL_DP_ENC0_P0_SHIFT) |
+ BIT(VSTART_SEL_DP_ENC0_P0_SHIFT) |
+ BIT(HWIDTH_SEL_DP_ENC0_P0_SHIFT) |
+ BIT(VHEIGHT_SEL_DP_ENC0_P0_SHIFT) |
+ BIT(HSP_SEL_DP_ENC0_P0_SHIFT) |
+ BIT(HSW_SEL_DP_ENC0_P0_SHIFT) |
+ BIT(VSP_SEL_DP_ENC0_P0_SHIFT) |
+ BIT(VSW_SEL_DP_ENC0_P0_SHIFT);
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3030, val, val);
+}
+
+static void mtk_dp_set_msa(struct mtk_dp *mtk_dp)
+{
+ struct drm_display_mode mode;
+ struct mtk_dp_timings *timings = &mtk_dp->info.timings;
+
+ drm_display_mode_from_videomode(&timings->vm, &mode);
+
+ /* horizontal */
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3010,
+ mode.htotal, HTOTAL_SW_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3018,
+ timings->vm.hsync_len + timings->vm.hback_porch,
+ HSTART_SW_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3028,
+ timings->vm.hsync_len << HSW_SW_DP_ENC0_P0_SHIFT,
+ HSW_SW_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3028,
+ 0, HSP_SW_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3020,
+ timings->vm.hactive, HWIDTH_SW_DP_ENC0_P0_MASK);
+
+ /* vertical */
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3014,
+ mode.vtotal, VTOTAL_SW_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_301C,
+ timings->vm.vsync_len + timings->vm.vback_porch,
+ VSTART_SW_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_302C,
+ timings->vm.vsync_len << VSW_SW_DP_ENC0_P0_SHIFT,
+ VSW_SW_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_302C,
+ 0, VSP_SW_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3024,
+ timings->vm.vactive, VHEIGHT_SW_DP_ENC0_P0_MASK);
+
+ /* horizontal */
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3064,
+ timings->vm.hactive, HDE_NUM_LAST_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3154,
+ mode.htotal, PGEN_HTOTAL_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3158,
+ timings->vm.hfront_porch,
+ PGEN_HSYNC_RISING_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_315C,
+ timings->vm.hsync_len,
+ PGEN_HSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3160,
+ timings->vm.hback_porch + timings->vm.hsync_len,
+ PGEN_HFDE_START_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3164,
+ timings->vm.hactive,
+ PGEN_HFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK);
+
+ /* vertical */
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3168,
+ mode.vtotal,
+ PGEN_VTOTAL_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_316C,
+ timings->vm.vfront_porch,
+ PGEN_VSYNC_RISING_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3170,
+ timings->vm.vsync_len,
+ PGEN_VSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3174,
+ timings->vm.vback_porch + timings->vm.vsync_len,
+ PGEN_VFDE_START_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3178,
+ timings->vm.vactive,
+ PGEN_VFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_set_color_format(struct mtk_dp *mtk_dp,
+ enum dp_pixelformat color_format)
+{
+ u32 val;
+
+ mtk_dp->info.format = color_format;
+
+ /* update MISC0 */
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3034,
+ color_format << DP_TEST_COLOR_FORMAT_SHIFT,
+ DP_TEST_COLOR_FORMAT_MASK);
+
+ switch (color_format) {
+ case DP_PIXELFORMAT_YUV422:
+ val = PIXEL_ENCODE_FORMAT_DP_ENC0_P0_YCBCR422;
+ break;
+ case DP_PIXELFORMAT_YUV420:
+ val = PIXEL_ENCODE_FORMAT_DP_ENC0_P0_YCBCR420;
+ break;
+ case DP_PIXELFORMAT_RGB:
+ case DP_PIXELFORMAT_YUV444:
+ val = PIXEL_ENCODE_FORMAT_DP_ENC0_P0_RGB;
+ break;
+ case DP_PIXELFORMAT_Y_ONLY:
+ case DP_PIXELFORMAT_RAW:
+ case DP_PIXELFORMAT_RESERVED:
+ default:
+ drm_warn(mtk_dp->drm_dev, "Unsupported color format: %d\n",
+ color_format);
+ return;
+ }
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C,
+ val, PIXEL_ENCODE_FORMAT_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_set_color_depth(struct mtk_dp *mtk_dp, u32 color_depth)
+{
+ u32 val;
+
+ mtk_dp->info.depth = color_depth;
+
+ /* Update MISC0 */
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3034,
+ color_depth, DP_TEST_BIT_DEPTH_MASK);
+
+ switch (color_depth) {
+ case DP_MSA_MISC_6_BPC:
+ val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_6BIT;
+ break;
+ case DP_MSA_MISC_8_BPC:
+ val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_8BIT;
+ break;
+ case DP_MSA_MISC_10_BPC:
+ val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_10BIT;
+ break;
+ case DP_MSA_MISC_12_BPC:
+ val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_12BIT;
+ break;
+ case DP_MSA_MISC_16_BPC:
+ val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_16BIT;
+ break;
+ default:
+ drm_warn(mtk_dp->drm_dev, "Unsupported color depth %d\n",
+ color_depth);
+ return;
+ }
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C, val,
+ VIDEO_COLOR_DEPTH_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_mn_overwrite_disable(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3004,
+ 0, VIDEO_M_CODE_SEL_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_set_sram_read_start(struct mtk_dp *mtk_dp, u32 val)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C,
+ val << SRAM_START_READ_THRD_DP_ENC0_P0_SHIFT,
+ SRAM_START_READ_THRD_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_setup_encoder(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C,
+ BIT(VIDEO_MN_GEN_EN_DP_ENC0_P0_SHIFT),
+ VIDEO_MN_GEN_EN_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3040,
+ 0x20 << SDP_DOWN_CNT_INIT_DP_ENC0_P0_SHIFT,
+ SDP_DOWN_CNT_INIT_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3364,
+ 0x20 << SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_SHIFT,
+ SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3300,
+ 2 << VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_SHIFT,
+ VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3364,
+ 4 << FIFO_READ_START_POINT_DP_ENC1_P0_SHIFT,
+ FIFO_READ_START_POINT_DP_ENC1_P0_MASK);
+ mtk_dp_write(mtk_dp, MTK_DP_ENC1_P0_3368,
+ BIT(VIDEO_SRAM_FIFO_CNT_RESET_SEL_DP_ENC1_P0_SHIFT) |
+ BIT(VIDEO_STABLE_CNT_THRD_DP_ENC1_P0_SHIFT) |
+ BIT(SDP_DP13_EN_DP_ENC1_P0_SHIFT) |
+ BIT(BS2BS_MODE_DP_ENC1_P0_SHIFT));
+}
+
+static void mtk_dp_pg_disable(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3038,
+ 0, VIDEO_SOURCE_SEL_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_31B0,
+ 4 << PGEN_PATTERN_SEL_SHIFT, PGEN_PATTERN_SEL_MASK);
+}
+
+static bool mtk_dp_plug_state(struct mtk_dp *mtk_dp)
+{
+ return !!(mtk_dp_read(mtk_dp, MTK_DP_TRANS_P0_3414) &
+ HPD_DB_DP_TRANS_P0_MASK);
+}
+
+static void mtk_dp_aux_irq_clear(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_write(mtk_dp, MTK_DP_AUX_P0_3640,
+ BIT(AUX_400US_TIMEOUT_IRQ_AUX_TX_P0_SHIFT) |
+ BIT(AUX_RX_DATA_RECV_IRQ_AUX_TX_P0_SHIFT) |
+ BIT(AUX_RX_ADDR_RECV_IRQ_AUX_TX_P0_SHIFT) |
+ BIT(AUX_RX_CMD_RECV_IRQ_AUX_TX_P0_SHIFT) |
+ BIT(AUX_RX_MCCS_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT) |
+ BIT(AUX_RX_EDID_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT) |
+ BIT(AUX_RX_AUX_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT));
+}
+
+static void mtk_dp_aux_set_cmd(struct mtk_dp *mtk_dp, u8 cmd, u32 addr)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3644,
+ cmd, MCU_REQUEST_COMMAND_AUX_TX_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3648,
+ addr, MCU_REQUEST_ADDRESS_LSB_AUX_TX_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_364C,
+ addr >> 16, MCU_REQUEST_ADDRESS_MSB_AUX_TX_P0_MASK);
+}
+
+static void mtk_dp_aux_cmd_complete(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3650,
+ BIT(MCU_ACK_TRAN_COMPLETE_AUX_TX_P0_SHIFT),
+ MCU_ACK_TRAN_COMPLETE_AUX_TX_P0_MASK |
+ PHY_FIFO_RST_AUX_TX_P0_MASK |
+ MCU_REQ_DATA_NUM_AUX_TX_P0_MASK);
+}
+
+static void mtk_dp_aux_request_ready(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3630,
+ BIT(AUX_TX_REQUEST_READY_AUX_TX_P0_SHIFT),
+ AUX_TX_REQUEST_READY_AUX_TX_P0_MASK);
+}
+
+static void mtk_dp_aux_fill_write_fifo(struct mtk_dp *mtk_dp, u8 *buf,
+ size_t length)
+{
+ mtk_dp_bulk_16bit_write(mtk_dp, MTK_DP_AUX_P0_3708, buf, length);
+}
+
+static void mtk_dp_aux_read_rx_fifo(struct mtk_dp *mtk_dp, u8 *buf,
+ size_t length, int read_delay)
+{
+ int read_pos;
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3620,
+ 0, AUX_RD_MODE_AUX_TX_P0_MASK);
+
+ for (read_pos = 0; read_pos < length; read_pos++) {
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3620,
+ BIT(AUX_RX_FIFO_R_PULSE_TX_P0_SHIFT),
+ AUX_RX_FIFO_READ_PULSE_TX_P0_MASK);
+
+ /* Hardware needs time to update the data */
+ usleep_range(read_delay, read_delay * 2);
+ buf[read_pos] = (u8)(mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3620) &
+ AUX_RX_FIFO_READ_DATA_AUX_TX_P0_MASK >>
+ AUX_RX_FIFO_READ_DATA_AUX_TX_P0_SHIFT);
+ }
+}
+
+static void mtk_dp_aux_set_length(struct mtk_dp *mtk_dp, size_t length)
+{
+ if (length > 0) {
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3650,
+ (length - 1) <<
+ MCU_REQ_DATA_NUM_AUX_TX_P0_SHIFT,
+ MCU_REQ_DATA_NUM_AUX_TX_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_362C,
+ 0,
+ AUX_NO_LENGTH_AUX_TX_P0_MASK |
+ AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK |
+ AUX_RESERVED_RW_0_AUX_TX_P0_MASK);
+ } else {
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_362C,
+ BIT(AUX_NO_LENGTH_AUX_TX_P0_SHIFT),
+ AUX_NO_LENGTH_AUX_TX_P0_MASK |
+ AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK |
+ AUX_RESERVED_RW_0_AUX_TX_P0_MASK);
+ }
+}
+
+static int mtk_dp_aux_wait_for_completion(struct mtk_dp *mtk_dp, bool is_read)
+{
+ int wait_reply = MTK_DP_AUX_WAIT_REPLY_COUNT;
+
+ while (--wait_reply) {
+ u32 aux_irq_status;
+
+ if (is_read) {
+ u32 fifo_status = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3618);
+
+ if (fifo_status &
+ (AUX_RX_FIFO_WRITE_POINTER_AUX_TX_P0_MASK |
+ AUX_RX_FIFO_FULL_AUX_TX_P0_MASK)) {
+ return 0;
+ }
+ }
+
+ aux_irq_status = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3640);
+ if (aux_irq_status & AUX_RX_RECV_COMPLETE_IRQ_TX_P0_MASK)
+ return 0;
+
+ if (aux_irq_status & AUX_400US_TIMEOUT_IRQ_AUX_TX_P0_MASK)
+ return -ETIMEDOUT;
+
+ /* Give the hardware a chance to reach completion before retrying */
+ usleep_range(100, 500);
+ }
+
+ return -ETIMEDOUT;
+}
+
+static int mtk_dp_aux_do_transfer(struct mtk_dp *mtk_dp, bool is_read, u8 cmd,
+ u32 addr, u8 *buf, size_t length)
+{
+ int ret;
+ u32 reply_cmd;
+
+ if (is_read && (length > DP_AUX_MAX_PAYLOAD_BYTES ||
+ (cmd == DP_AUX_NATIVE_READ && !length)))
+ return -EINVAL;
+
+ if (!is_read)
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3704,
+ BIT(AUX_TX_FIFO_NEW_MODE_EN_AUX_TX_P0_SHIFT),
+ AUX_TX_FIFO_NEW_MODE_EN_AUX_TX_P0_MASK);
+
+ mtk_dp_aux_cmd_complete(mtk_dp);
+ mtk_dp_aux_irq_clear(mtk_dp);
+
+ mtk_dp_aux_set_cmd(mtk_dp, cmd, addr);
+ mtk_dp_aux_set_length(mtk_dp, length);
+
+ if (!is_read) {
+ if (length)
+ mtk_dp_aux_fill_write_fifo(mtk_dp, buf, length);
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3704,
+ AUX_TX_FIFO_WRITE_DATA_NEW_MODE_TOGGLE_AUX_TX_P0_MASK,
+ AUX_TX_FIFO_WRITE_DATA_NEW_MODE_TOGGLE_AUX_TX_P0_MASK);
+ }
+
+ mtk_dp_aux_request_ready(mtk_dp);
+
+ ret = mtk_dp_aux_wait_for_completion(mtk_dp, is_read);
+
+ reply_cmd = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3624) &
+ AUX_RX_REPLY_COMMAND_AUX_TX_P0_MASK;
+
+ if (ret || reply_cmd) {
+ u32 phy_status = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3628) &
+ AUX_RX_PHY_STATE_AUX_TX_P0_MASK;
+ if (phy_status != AUX_RX_PHY_STATE_AUX_TX_P0_RX_IDLE) {
+ drm_err(mtk_dp->drm_dev,
+ "AUX Rx Aux hang, need SW reset\n");
+ return -EIO;
+ }
+
+ mtk_dp_aux_cmd_complete(mtk_dp);
+ mtk_dp_aux_irq_clear(mtk_dp);
+
+ return -ETIMEDOUT;
+ }
+
+ if (!length) {
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_362C,
+ 0,
+ AUX_NO_LENGTH_AUX_TX_P0_MASK |
+ AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK |
+ AUX_RESERVED_RW_0_AUX_TX_P0_MASK);
+ } else if (is_read) {
+ int read_delay;
+
+ if (cmd == (DP_AUX_I2C_READ | DP_AUX_I2C_MOT) ||
+ cmd == DP_AUX_I2C_READ)
+ read_delay = 500;
+ else
+ read_delay = 100;
+
+ mtk_dp_aux_read_rx_fifo(mtk_dp, buf, length, read_delay);
+ }
+
+ mtk_dp_aux_cmd_complete(mtk_dp);
+ mtk_dp_aux_irq_clear(mtk_dp);
+
+ return 0;
+}
+
+static void mtk_dp_set_swing_pre_emphasis(struct mtk_dp *mtk_dp, int lane_num,
+ int swing_val, int preemphasis)
+{
+ u32 lane_shift = lane_num * DP_TX1_VOLT_SWING_SHIFT;
+
+ dev_dbg(mtk_dp->dev,
+ "link training: swing_val = 0x%x, pre-emphasis = 0x%x\n",
+ swing_val, preemphasis);
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_SWING_EMP,
+ swing_val << (DP_TX0_VOLT_SWING_SHIFT + lane_shift),
+ DP_TX0_VOLT_SWING_MASK << lane_shift);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_SWING_EMP,
+ preemphasis << (DP_TX0_PRE_EMPH_SHIFT + lane_shift),
+ DP_TX0_PRE_EMPH_MASK << lane_shift);
+}
+
+static void mtk_dp_reset_swing_pre_emphasis(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_SWING_EMP,
+ 0,
+ DP_TX0_VOLT_SWING_MASK |
+ DP_TX1_VOLT_SWING_MASK |
+ DP_TX2_VOLT_SWING_MASK |
+ DP_TX3_VOLT_SWING_MASK |
+ DP_TX0_PRE_EMPH_MASK |
+ DP_TX1_PRE_EMPH_MASK |
+ DP_TX2_PRE_EMPH_MASK |
+ DP_TX3_PRE_EMPH_MASK);
+}
+
+static u32 mtk_dp_swirq_get_clear(struct mtk_dp *mtk_dp)
+{
+ u32 irq_status = mtk_dp_read(mtk_dp, MTK_DP_TRANS_P0_35D0) &
+ SW_IRQ_FINAL_STATUS_DP_TRANS_P0_MASK;
+
+ if (irq_status) {
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_35C8,
+ irq_status, SW_IRQ_CLR_DP_TRANS_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_35C8,
+ 0, SW_IRQ_CLR_DP_TRANS_P0_MASK);
+ }
+
+ return irq_status;
+}
+
+static u32 mtk_dp_hwirq_get_clear(struct mtk_dp *mtk_dp)
+{
+ u32 irq_status = (mtk_dp_read(mtk_dp, MTK_DP_TRANS_P0_3418) &
+ IRQ_STATUS_DP_TRANS_P0_MASK) >>
+ IRQ_STATUS_DP_TRANS_P0_SHIFT;
+
+ if (irq_status) {
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3418,
+ irq_status, IRQ_CLR_DP_TRANS_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3418,
+ 0, IRQ_CLR_DP_TRANS_P0_MASK);
+ }
+
+ return irq_status;
+}
+
+static void mtk_dp_hwirq_enable(struct mtk_dp *mtk_dp, bool enable)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3418,
+ enable ? 0 :
+ IRQ_MASK_DP_TRANS_P0_DISC_IRQ |
+ IRQ_MASK_DP_TRANS_P0_CONN_IRQ |
+ IRQ_MASK_DP_TRANS_P0_INT_IRQ,
+ IRQ_MASK_DP_TRANS_P0_MASK);
+}
+
+static void mtk_dp_initialize_settings(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_342C,
+ XTAL_FREQ_DP_TRANS_P0_DEFAULT,
+ XTAL_FREQ_DP_TRANS_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3540,
+ BIT(FEC_CLOCK_EN_MODE_DP_TRANS_P0_SHIFT),
+ FEC_CLOCK_EN_MODE_DP_TRANS_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_31EC,
+ BIT(AUDIO_CH_SRC_SEL_DP_ENC0_P0_SHIFT),
+ AUDIO_CH_SRC_SEL_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_304C,
+ 0, SDP_VSYNC_RISING_MASK_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_IRQ_MASK,
+ IRQ_MASK_AUX_TOP_IRQ, IRQ_MASK_AUX_TOP_IRQ);
+}
+
+static void mtk_dp_initialize_hpd_detect_settings(struct mtk_dp *mtk_dp)
+{
+ u32 val;
+ /* Debounce threshold */
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3410,
+ 8 << HPD_DEB_THD_DP_TRANS_P0_SHIFT,
+ HPD_DEB_THD_DP_TRANS_P0_MASK);
+
+ val = (HPD_INT_THD_DP_TRANS_P0_LOWER_500US |
+ HPD_INT_THD_DP_TRANS_P0_UPPER_1100US)
+ << HPD_INT_THD_DP_TRANS_P0_SHIFT;
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3410,
+ val, HPD_INT_THD_DP_TRANS_P0_MASK);
+
+ /*
+ * Connect threshold 1.5ms + 5 x 0.1ms = 2ms
+ * Disconnect threshold 1.5ms + 5 x 0.1ms = 2ms
+ */
+ val = (5 << HPD_DISC_THD_DP_TRANS_P0_SHIFT) |
+ (5 << HPD_CONN_THD_DP_TRANS_P0_SHIFT);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3410,
+ val,
+ HPD_DISC_THD_DP_TRANS_P0_MASK |
+ HPD_CONN_THD_DP_TRANS_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3430,
+ HPD_INT_THD_ECO_DP_TRANS_P0_HIGH_BOUND_EXT,
+ HPD_INT_THD_ECO_DP_TRANS_P0_MASK);
+}
+
+static void mtk_dp_initialize_aux_settings(struct mtk_dp *mtk_dp)
+{
+ /* modify timeout threshold = 0x1595 */
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_360C,
+ 0x1595, AUX_TIMEOUT_THR_AUX_TX_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3658, 0,
+ AUX_TX_OV_EN_AUX_TX_P0_MASK);
+ /* 25 for 26M */
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3634,
+ 25 << AUX_TX_OVER_SAMPLE_RATE_AUX_TX_P0_SHIFT,
+ AUX_TX_OVER_SAMPLE_RATE_AUX_TX_P0_MASK);
+ /* 13 for 26M */
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3614,
+ 13 << AUX_RX_UI_CNT_THR_AUX_TX_P0_SHIFT,
+ AUX_RX_UI_CNT_THR_AUX_TX_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_37C8,
+ BIT(MTK_ATOP_EN_AUX_TX_P0_SHIFT),
+ MTK_ATOP_EN_AUX_TX_P0_MASK);
+}
+
+static void mtk_dp_initialize_digital_settings(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_304C,
+ 0, VBID_VIDEO_MUTE_DP_ENC0_P0_MASK);
+
+ mtk_dp_set_color_format(mtk_dp, DP_PIXELFORMAT_RGB);
+ mtk_dp_set_color_depth(mtk_dp, DP_MSA_MISC_8_BPC);
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3368,
+ 1 << BS2BS_MODE_DP_ENC1_P0_SHIFT,
+ BS2BS_MODE_DP_ENC1_P0_MASK);
+
+ /* dp tx encoder reset all sw */
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3004,
+ BIT(DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_SHIFT),
+ DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_MASK);
+
+ /* Wait for sw reset to complete */
+ usleep_range(1000, 5000);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3004,
+ 0, DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_digital_sw_reset(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_340C,
+ BIT(DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_SHIFT),
+ DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_MASK);
+
+ /* Wait for sw reset to complete */
+ usleep_range(1000, 5000);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_340C,
+ 0, DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_MASK);
+}
+
+static void mtk_dp_set_lanes(struct mtk_dp *mtk_dp, int lanes)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_35F0,
+ lanes == 0 ? 0 : BIT(3), BIT(3) | BIT(2));
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3000,
+ lanes, LANE_NUM_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_34A4,
+ lanes << LANE_NUM_DP_TRANS_P0_SHIFT,
+ LANE_NUM_DP_TRANS_P0_MASK);
+}
+
+static int link_rate_to_mb_per_s(struct mtk_dp *mtk_dp,
+ enum mtk_dp_linkrate linkrate)
+{
+ switch (linkrate) {
+ case MTK_DP_LINKRATE_RBR:
+ return 1620;
+ case MTK_DP_LINKRATE_HBR:
+ return 2700;
+ case MTK_DP_LINKRATE_HBR2:
+ return 5400;
+ case MTK_DP_LINKRATE_HBR3:
+ return 8100;
+ default:
+ drm_err(mtk_dp->drm_dev,
+ "Implementation error, unknown linkrate %d\n",
+ linkrate);
+ return -EINVAL;
+ }
+}
+
+static void use_cal_default_val(struct mtk_dp *mtk_dp)
+{
+ struct dp_cal_data *cal_data = &mtk_dp->cal_data;
+ int i;
+
+ dev_warn(mtk_dp->dev, "Use default calibration data\n");
+
+ cal_data->glb_bias_trim = 0xf;
+ cal_data->clktx_impse = 0x8;
+
+ for (i = 0; i < 4; i++) {
+ cal_data->ln_tx_impsel_pmos[i] = 0x8;
+ cal_data->ln_tx_impsel_nmos[i] = 0x8;
+ }
+}
+
+static u32 check_cal_data_valid(struct mtk_dp *mtk_dp, u32 min, u32 max,
+ u32 val, u32 default_val)
+{
+ if (val < min || val > max) {
+ dev_warn(mtk_dp->dev,
+ "invalid calibration data: %d, use value: %d\n",
+ val, default_val);
+ return default_val;
+ }
+
+ return val;
+}
+
+static void mtk_dp_get_calibration_data(struct mtk_dp *mtk_dp)
+{
+ struct dp_cal_data *cal_data = &mtk_dp->cal_data;
+ struct device *dev = mtk_dp->dev;
+ struct nvmem_cell *cell;
+ u32 *buf;
+ size_t len;
+
+ cell = nvmem_cell_get(dev, "dp_calibration_data");
+ if (IS_ERR(cell)) {
+ dev_warn(dev,
+ "Error: Failed to get nvmem cell dp_calibration_data\n");
+ use_cal_default_val(mtk_dp);
+ return;
+ }
+
+ buf = (u32 *)nvmem_cell_read(cell, &len);
+ nvmem_cell_put(cell);
+
+ if (IS_ERR(buf) || ((len / sizeof(u32)) != 4)) {
+ dev_warn(dev, "Failed to read nvmem_cell_read\n");
+ use_cal_default_val(mtk_dp);
+ return;
+ }
+
+ cal_data->glb_bias_trim =
+ check_cal_data_valid(mtk_dp, 1, 0x1e,
+ (buf[3] >> 27) & 0x1f, 0xf);
+ cal_data->clktx_impse =
+ check_cal_data_valid(mtk_dp, 1, 0xe,
+ (buf[0] >> 9) & 0xf, 0x8);
+ cal_data->ln_tx_impsel_pmos[0] =
+ check_cal_data_valid(mtk_dp, 1, 0xe,
+ (buf[2] >> 28) & 0xf, 0x8);
+ cal_data->ln_tx_impsel_nmos[0] =
+ check_cal_data_valid(mtk_dp, 1, 0xe,
+ (buf[2] >> 24) & 0xf, 0x8);
+ cal_data->ln_tx_impsel_pmos[1] =
+ check_cal_data_valid(mtk_dp, 1, 0xe,
+ (buf[2] >> 20) & 0xf, 0x8);
+ cal_data->ln_tx_impsel_nmos[1] =
+ check_cal_data_valid(mtk_dp, 1, 0xe,
+ (buf[2] >> 16) & 0xf, 0x8);
+ cal_data->ln_tx_impsel_pmos[2] =
+ check_cal_data_valid(mtk_dp, 1, 0xe,
+ (buf[2] >> 12) & 0xf, 0x8);
+ cal_data->ln_tx_impsel_nmos[2] =
+ check_cal_data_valid(mtk_dp, 1, 0xe,
+ (buf[2] >> 8) & 0xf, 0x8);
+ cal_data->ln_tx_impsel_pmos[3] =
+ check_cal_data_valid(mtk_dp, 1, 0xe,
+ (buf[2] >> 4) & 0xf, 0x8);
+ cal_data->ln_tx_impsel_nmos[3] =
+ check_cal_data_valid(mtk_dp, 1, 0xe, buf[2] & 0xf, 0x8);
+
+ kfree(buf);
+}
+
+static void mtk_dp_set_cal_data(struct mtk_dp *mtk_dp)
+{
+ struct dp_cal_data *cal_data = &mtk_dp->cal_data;
+
+ mtk_dp_update_bits(mtk_dp, DP_PHY_GLB_DPAUX_TX,
+ cal_data->clktx_impse << 20, RG_CKM_PT0_CKTX_IMPSEL);
+ mtk_dp_update_bits(mtk_dp, DP_PHY_GLB_BIAS_GEN_00,
+ cal_data->glb_bias_trim << 16,
+ RG_XTP_GLB_BIAS_INTR_CTRL);
+ mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_0,
+ cal_data->ln_tx_impsel_pmos[0] << 12,
+ RG_XTP_LN0_TX_IMPSEL_PMOS);
+ mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_0,
+ cal_data->ln_tx_impsel_nmos[0] << 16,
+ RG_XTP_LN0_TX_IMPSEL_NMOS);
+ mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_1,
+ cal_data->ln_tx_impsel_pmos[1] << 12,
+ RG_XTP_LN1_TX_IMPSEL_PMOS);
+ mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_1,
+ cal_data->ln_tx_impsel_nmos[1] << 16,
+ RG_XTP_LN1_TX_IMPSEL_NMOS);
+ mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_2,
+ cal_data->ln_tx_impsel_pmos[2] << 12,
+ RG_XTP_LN2_TX_IMPSEL_PMOS);
+ mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_2,
+ cal_data->ln_tx_impsel_nmos[2] << 16,
+ RG_XTP_LN2_TX_IMPSEL_NMOS);
+ mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_3,
+ cal_data->ln_tx_impsel_pmos[3] << 12,
+ RG_XTP_LN3_TX_IMPSEL_PMOS);
+ mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_3,
+ cal_data->ln_tx_impsel_nmos[3] << 16,
+ RG_XTP_LN3_TX_IMPSEL_NMOS);
+}
+
+static int mtk_dp_phy_configure(struct mtk_dp *mtk_dp,
+ enum mtk_dp_linkrate link_rate, int lane_count)
+{
+ int ret;
+ union phy_configure_opts phy_opts = {
+ .dp = {
+ .link_rate = link_rate_to_mb_per_s(mtk_dp, link_rate),
+ .set_rate = 1,
+ .lanes = lane_count,
+ .set_lanes = 1,
+ .ssc = mtk_dp->train_info.sink_ssc,
+ }
+ };
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE, DP_PWR_STATE_BANDGAP,
+ DP_PWR_STATE_MASK);
+
+ ret = phy_configure(mtk_dp->phy, &phy_opts);
+
+ if (ret)
+ return ret;
+
+ mtk_dp_set_cal_data(mtk_dp);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE,
+ DP_PWR_STATE_BANDGAP_TPLL_LANE, DP_PWR_STATE_MASK);
+
+ return 0;
+}
+
+static void mtk_dp_set_idle_pattern(struct mtk_dp *mtk_dp, bool enable)
+{
+ u32 val = POST_MISC_DATA_LANE0_OV_DP_TRANS_P0_MASK |
+ POST_MISC_DATA_LANE1_OV_DP_TRANS_P0_MASK |
+ POST_MISC_DATA_LANE2_OV_DP_TRANS_P0_MASK |
+ POST_MISC_DATA_LANE3_OV_DP_TRANS_P0_MASK;
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3580,
+ enable ? val : 0, val);
+}
+
+static int mtk_dp_train_set_pattern(struct mtk_dp *mtk_dp, int pattern)
+{
+ if (pattern < 0 || pattern > 4) {
+ drm_err(mtk_dp->drm_dev,
+ "Implementation error, no such pattern %d\n", pattern);
+ return -EINVAL;
+ }
+
+ /* TPS1 */
+ if (pattern == 1)
+ mtk_dp_set_idle_pattern(mtk_dp, false);
+
+ mtk_dp_update_bits(mtk_dp,
+ MTK_DP_TRANS_P0_3400,
+ pattern ?
+ BIT(pattern - 1) << PATTERN1_EN_DP_TRANS_P0_SHIFT :
+ 0,
+ PATTERN1_EN_DP_TRANS_P0_MASK |
+ PATTERN2_EN_DP_TRANS_P0_MASK |
+ PATTERN3_EN_DP_TRANS_P0_MASK |
+ PATTERN4_EN_DP_TRANS_P0_MASK);
+ return 0;
+}
+
+static void mtk_dp_set_enhanced_frame_mode(struct mtk_dp *mtk_dp, bool enable)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3000,
+ enable ? BIT(ENHANCED_FRAME_EN_DP_ENC0_P0_SHIFT) : 0,
+ ENHANCED_FRAME_EN_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_training_set_scramble(struct mtk_dp *mtk_dp, bool enable)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3404,
+ enable ? DP_SCR_EN_DP_TRANS_P0_MASK : 0,
+ DP_SCR_EN_DP_TRANS_P0_MASK);
+}
+
+static void mtk_dp_video_mute(struct mtk_dp *mtk_dp, bool enable)
+{
+ u32 val = BIT(VIDEO_MUTE_SEL_DP_ENC0_P0_SHIFT) |
+ (enable ? BIT(VIDEO_MUTE_SW_DP_ENC0_P0_SHIFT) : 0);
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3000,
+ val,
+ VIDEO_MUTE_SEL_DP_ENC0_P0_MASK |
+ VIDEO_MUTE_SW_DP_ENC0_P0_MASK);
+
+ mtk_dp_sip_atf_call(mtk_dp, MTK_DP_SIP_ATF_EDP_VIDEO_UNMUTE, enable);
+}
+
+static void mtk_dp_power_enable(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_RESET_AND_PROBE,
+ 0, SW_RST_B_PHYD);
+
+ /* Wait for power enable */
+ usleep_range(10, 200);
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_RESET_AND_PROBE,
+ SW_RST_B_PHYD, SW_RST_B_PHYD);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE,
+ DP_PWR_STATE_BANDGAP_TPLL, DP_PWR_STATE_MASK);
+}
+
+static void mtk_dp_power_disable(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_write(mtk_dp, MTK_DP_TOP_PWR_STATE, 0);
+
+ mtk_dp_write(mtk_dp, MTK_DP_0034,
+ DA_CKM_CKTX0_EN_FORCE_EN |
+ DA_CKM_BIAS_LPF_EN_FORCE_VAL |
+ DA_CKM_BIAS_EN_FORCE_VAL |
+ DA_XTP_GLB_LDO_EN_FORCE_VAL |
+ DA_XTP_GLB_AVD10_ON_FORCE_VAL);
+
+ /* Disable RX */
+ mtk_dp_write(mtk_dp, MTK_DP_1040, 0);
+ mtk_dp_write(mtk_dp, MTK_DP_TOP_MEM_PD,
+ 0x550 | BIT(FUSE_SEL_SHIFT) | BIT(MEM_ISO_EN_SHIFT));
+}
+
+static void mtk_dp_initialize_priv_data(struct mtk_dp *mtk_dp)
+{
+ mtk_dp->train_info.link_rate = MTK_DP_LINKRATE_HBR2;
+ mtk_dp->train_info.lane_count = mtk_dp->max_lanes;
+ mtk_dp->train_info.cable_plugged_in = false;
+ mtk_dp->train_info.cable_state_change = false;
+ memset(&mtk_dp->train_info.irq_sta, 0, sizeof(struct mtk_dp_irq_sta));
+
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_TRAINING;
+
+ mtk_dp->info.format = DP_PIXELFORMAT_RGB;
+ mtk_dp->info.depth = DP_MSA_MISC_8_BPC;
+ memset(&mtk_dp->info.timings, 0, sizeof(struct mtk_dp_timings));
+ mtk_dp->info.timings.frame_rate = 60;
+}
+
+static void mtk_dp_setup_tu(struct mtk_dp *mtk_dp)
+{
+ u32 sram_read_start = MTK_DP_TBC_BUF_READ_START_ADDR;
+
+ if (mtk_dp->train_info.lane_count > 0) {
+ sram_read_start = min_t(u32,
+ MTK_DP_TBC_BUF_READ_START_ADDR,
+ mtk_dp->info.timings.vm.hactive /
+ mtk_dp->train_info.lane_count /
+ MTK_DP_4P1T / MTK_DP_HDE / MTK_DP_PIX_PER_ADDR);
+ mtk_dp_set_sram_read_start(mtk_dp, sram_read_start);
+ }
+
+ mtk_dp_setup_encoder(mtk_dp);
+}
+
+static void mtk_dp_calculate_pixrate(struct mtk_dp *mtk_dp)
+{
+ u8 target_frame_rate = 60;
+ u32 target_pixel_clk;
+ struct drm_display_mode mode;
+ struct mtk_dp_timings *timings = &mtk_dp->info.timings;
+
+ drm_display_mode_from_videomode(&timings->vm, &mode);
+
+ if (mtk_dp->info.timings.frame_rate > 0) {
+ target_frame_rate = mtk_dp->info.timings.frame_rate;
+ target_pixel_clk = mode.htotal * mode.vtotal *
+ target_frame_rate;
+ } else if (mtk_dp->info.timings.pix_rate_khz > 0) {
+ target_pixel_clk = mtk_dp->info.timings.pix_rate_khz * 1000;
+ } else {
+ target_pixel_clk = mode.htotal * mode.vtotal *
+ target_frame_rate;
+ }
+
+ mtk_dp->info.timings.pix_rate_khz = target_pixel_clk / 1000;
+}
+
+static void mtk_dp_set_tx_out(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_msa_bypass_disable(mtk_dp);
+ mtk_dp_calculate_pixrate(mtk_dp);
+ mtk_dp_pg_disable(mtk_dp);
+ mtk_dp_setup_tu(mtk_dp);
+}
+
+static ssize_t mtk_dp_hpd_sink_event(struct mtk_dp *mtk_dp)
+{
+ ssize_t ret;
+ u8 sink_count;
+ bool locked;
+ u8 link_status[DP_LINK_STATUS_SIZE] = {};
+ u32 sink_count_reg = DP_SINK_COUNT_ESI;
+ u32 link_status_reg = DP_LANE0_1_STATUS;
+
+ ret = drm_dp_dpcd_readb(&mtk_dp->aux, sink_count_reg, &sink_count);
+ if (ret < 0) {
+ drm_err(mtk_dp->drm_dev, "Read sink count failed\n");
+ return ret;
+ }
+
+ ret = drm_dp_dpcd_read(&mtk_dp->aux, link_status_reg, link_status,
+ sizeof(link_status));
+ if (!ret) {
+ drm_err(mtk_dp->drm_dev, "Read link status failed\n");
+ return ret;
+ }
+
+ locked = drm_dp_channel_eq_ok(link_status,
+ mtk_dp->train_info.lane_count);
+ if (!locked && mtk_dp->train_state > MTK_DP_TRAIN_STATE_TRAINING)
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_TRAINING;
+
+ if (link_status[1] & DP_REMOTE_CONTROL_COMMAND_PENDING)
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_DEVICE_SERVICE_IRQ_VECTOR,
+ DP_REMOTE_CONTROL_COMMAND_PENDING);
+
+ if (DP_GET_SINK_COUNT(sink_count) &&
+ (link_status[2] & DP_DOWNSTREAM_PORT_STATUS_CHANGED)) {
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_TRAINING;
+ msleep(20);
+ }
+
+ return 0;
+}
+
+static void mtk_dp_train_update_swing_pre(struct mtk_dp *mtk_dp, int lanes,
+ u8 dpcd_adjust_req[2])
+{
+ int lane;
+
+ for (lane = 0; lane < lanes; ++lane) {
+ u8 val;
+ u8 swing;
+ u8 preemphasis;
+ int index = lane / 2;
+ int shift = lane % 2 ? DP_ADJUST_VOLTAGE_SWING_LANE1_SHIFT : 0;
+
+ swing = (dpcd_adjust_req[index] >> shift) &
+ DP_ADJUST_VOLTAGE_SWING_LANE0_MASK;
+ preemphasis = ((dpcd_adjust_req[index] >> shift) &
+ DP_ADJUST_PRE_EMPHASIS_LANE0_MASK) >>
+ DP_ADJUST_PRE_EMPHASIS_LANE0_SHIFT;
+ val = swing << DP_TRAIN_VOLTAGE_SWING_SHIFT |
+ preemphasis << DP_TRAIN_PRE_EMPHASIS_SHIFT;
+
+ if (swing == DP_TRAIN_VOLTAGE_SWING_LEVEL_3)
+ val |= DP_TRAIN_MAX_SWING_REACHED;
+ if (preemphasis == 3)
+ val |= DP_TRAIN_MAX_PRE_EMPHASIS_REACHED;
+
+ mtk_dp_set_swing_pre_emphasis(mtk_dp, lane, swing, preemphasis);
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_TRAINING_LANE0_SET + lane,
+ val);
+ }
+}
+
+static int mtk_dp_train_tps_1(struct mtk_dp *mtk_dp, u8 target_lane_count,
+ int *iteration_count, u8 *lane_adjust,
+ int *status_control, u8 *prev_lane_adjust)
+{
+ int ret;
+ u8 val;
+ u8 link_status[DP_LINK_STATUS_SIZE] = {};
+
+ mtk_dp_training_set_scramble(mtk_dp, false);
+
+ if (*status_control == 0) {
+ ret = mtk_dp_train_set_pattern(mtk_dp, 1);
+ if (ret)
+ return ret;
+
+ val = DP_LINK_SCRAMBLING_DISABLE |
+ DP_TRAINING_PATTERN_1;
+ drm_dp_dpcd_writeb(&mtk_dp->aux,
+ DP_TRAINING_PATTERN_SET,
+ DP_LINK_SCRAMBLING_DISABLE |
+ DP_TRAINING_PATTERN_1);
+ drm_dp_dpcd_read(&mtk_dp->aux,
+ DP_ADJUST_REQUEST_LANE0_1,
+ lane_adjust,
+ sizeof(*lane_adjust) * 2);
+
+ mtk_dp_train_update_swing_pre(mtk_dp,
+ target_lane_count, lane_adjust);
+ *status_control = 1;
+ (*iteration_count)++;
+ }
+
+ drm_dp_link_train_clock_recovery_delay(&mtk_dp->aux, mtk_dp->rx_cap);
+ drm_dp_dpcd_read_link_status(&mtk_dp->aux, link_status);
+
+ if (drm_dp_clock_recovery_ok(link_status,
+ target_lane_count)) {
+ mtk_dp->train_info.cr_done = true;
+ *iteration_count = 1;
+ dev_dbg(mtk_dp->dev, "Link train CR pass\n");
+ return 0;
+ } else if (*prev_lane_adjust == link_status[4]) {
+ (*iteration_count)++;
+ if (*prev_lane_adjust & DP_ADJUST_VOLTAGE_SWING_LANE0_MASK) {
+ dev_dbg(mtk_dp->dev, "Link train CQ fail\n");
+ return -EINVAL;
+ }
+ } else {
+ *prev_lane_adjust = link_status[4];
+ }
+ return -EAGAIN;
+}
+
+static int mtk_dp_train_tps_2_3(struct mtk_dp *mtk_dp, u8 target_linkrate,
+ u8 target_lane_count, int *iteration_count,
+ u8 *lane_adjust, int *status_control,
+ u8 *prev_lane_adjust)
+{
+ int ret;
+ u8 val;
+ u8 link_status[DP_LINK_STATUS_SIZE] = {};
+
+ if (*status_control == 1) {
+ if (mtk_dp->train_info.tps4) {
+ ret = mtk_dp_train_set_pattern(mtk_dp, 4);
+ if (ret)
+ return -EINVAL;
+
+ val = DP_TRAINING_PATTERN_4;
+ } else if (mtk_dp->train_info.tps3) {
+ ret = mtk_dp_train_set_pattern(mtk_dp, 3);
+ if (ret)
+ return -EINVAL;
+
+ val = DP_LINK_SCRAMBLING_DISABLE |
+ DP_TRAINING_PATTERN_3;
+ } else {
+ ret = mtk_dp_train_set_pattern(mtk_dp, 2);
+ if (ret)
+ return -EINVAL;
+
+ val = DP_LINK_SCRAMBLING_DISABLE |
+ DP_TRAINING_PATTERN_2;
+ }
+ drm_dp_dpcd_writeb(&mtk_dp->aux,
+ DP_TRAINING_PATTERN_SET, val);
+ drm_dp_dpcd_read(&mtk_dp->aux,
+ DP_ADJUST_REQUEST_LANE0_1, lane_adjust,
+ sizeof(*lane_adjust) * 2);
+
+ mtk_dp_train_update_swing_pre(mtk_dp,
+ target_lane_count, lane_adjust);
+ *status_control = 2;
+ (*iteration_count)++;
+ }
+
+ drm_dp_link_train_channel_eq_delay(&mtk_dp->aux, mtk_dp->rx_cap);
+
+ drm_dp_dpcd_read_link_status(&mtk_dp->aux, link_status);
+
+ if (!drm_dp_clock_recovery_ok(link_status, target_lane_count)) {
+ mtk_dp->train_info.cr_done = false;
+ mtk_dp->train_info.eq_done = false;
+ dev_dbg(mtk_dp->dev, "Link train EQ fail\n");
+ return -EINVAL;
+ }
+
+ if (drm_dp_channel_eq_ok(link_status, target_lane_count)) {
+ mtk_dp->train_info.eq_done = true;
+ dev_dbg(mtk_dp->dev, "Link train EQ pass\n");
+ return 0;
+ }
+
+ if (*prev_lane_adjust == link_status[4])
+ (*iteration_count)++;
+ else
+ *prev_lane_adjust = link_status[4];
+
+ return -EAGAIN;
+}
+
+static int mtk_dp_train_flow(struct mtk_dp *mtk_dp, u8 target_link_rate,
+ u8 target_lane_count)
+{
+ u8 lane_adjust[2] = {};
+ bool pass_tps1 = false;
+ bool pass_tps2_3 = false;
+ int train_retries;
+ int status_control;
+ int iteration_count;
+ int ret;
+ u8 prev_lane_adjust;
+
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_LINK_BW_SET, target_link_rate);
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_LANE_COUNT_SET,
+ target_lane_count | DP_LANE_COUNT_ENHANCED_FRAME_EN);
+
+ if (mtk_dp->train_info.sink_ssc)
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_DOWNSPREAD_CTRL,
+ DP_SPREAD_AMP_0_5);
+
+ train_retries = 0;
+ status_control = 0;
+ iteration_count = 1;
+ prev_lane_adjust = 0xFF;
+
+ mtk_dp_set_lanes(mtk_dp, target_lane_count / 2);
+ ret = mtk_dp_phy_configure(mtk_dp, target_link_rate, target_lane_count);
+ if (ret)
+ return -EINVAL;
+
+ dev_dbg(mtk_dp->dev,
+ "Link train target_link_rate = 0x%x, target_lane_count = 0x%x\n",
+ target_link_rate, target_lane_count);
+
+ do {
+ train_retries++;
+ if (!mtk_dp->train_info.cable_plugged_in ||
+ mtk_dp->train_info.irq_sta.hpd_disconnect) {
+ return -ENODEV;
+ }
+
+ if (mtk_dp->train_state < MTK_DP_TRAIN_STATE_TRAINING)
+ return -EAGAIN;
+
+ if (!pass_tps1) {
+ ret = mtk_dp_train_tps_1(mtk_dp, target_lane_count,
+ &iteration_count, lane_adjust,
+ &status_control,
+ &prev_lane_adjust);
+ if (!ret) {
+ pass_tps1 = true;
+ train_retries = 0;
+ } else if (ret == -EINVAL) {
+ break;
+ }
+ } else {
+ ret = mtk_dp_train_tps_2_3(mtk_dp, target_link_rate,
+ target_lane_count,
+ &iteration_count,
+ lane_adjust, &status_control,
+ &prev_lane_adjust);
+ if (!ret) {
+ pass_tps2_3 = true;
+ break;
+ } else if (ret == -EINVAL) {
+ break;
+ }
+ }
+
+ drm_dp_dpcd_read(&mtk_dp->aux, DP_ADJUST_REQUEST_LANE0_1,
+ lane_adjust, sizeof(lane_adjust));
+ mtk_dp_train_update_swing_pre(mtk_dp, target_lane_count,
+ lane_adjust);
+ } while (train_retries < MTK_DP_TRAIN_RETRY_LIMIT &&
+ iteration_count < MTK_DP_TRAIN_MAX_ITERATIONS);
+
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_TRAINING_PATTERN_SET,
+ DP_TRAINING_PATTERN_DISABLE);
+ ret = mtk_dp_train_set_pattern(mtk_dp, 0);
+ if (ret)
+ return -EINVAL;
+
+ if (!pass_tps2_3)
+ return -ETIMEDOUT;
+
+ mtk_dp->train_info.link_rate = target_link_rate;
+ mtk_dp->train_info.lane_count = target_lane_count;
+
+ mtk_dp_training_set_scramble(mtk_dp, true);
+
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_LANE_COUNT_SET,
+ target_lane_count |
+ DP_LANE_COUNT_ENHANCED_FRAME_EN);
+ mtk_dp_set_enhanced_frame_mode(mtk_dp, true);
+
+ return ret;
+}
+
+static int mtk_dp_parse_capabilities(struct mtk_dp *mtk_dp)
+{
+ u8 val;
+ struct mtk_dp_train_info *train_info = &mtk_dp->train_info;
+
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_SET_POWER, DP_SET_POWER_D0);
+ usleep_range(2000, 5000);
+
+ drm_dp_read_dpcd_caps(&mtk_dp->aux, mtk_dp->rx_cap);
+
+ mtk_dp->rx_cap[DP_TRAINING_AUX_RD_INTERVAL] &= DP_TRAINING_AUX_RD_MASK;
+
+ train_info->link_rate = min_t(int, mtk_dp->max_linkrate,
+ mtk_dp->rx_cap[mtk_dp->max_linkrate]);
+ train_info->lane_count = min_t(int, mtk_dp->max_lanes,
+ drm_dp_max_lane_count(mtk_dp->rx_cap));
+
+ train_info->tps3 = drm_dp_tps3_supported(mtk_dp->rx_cap);
+ train_info->tps4 = drm_dp_tps4_supported(mtk_dp->rx_cap);
+
+ train_info->sink_ssc = !!(mtk_dp->rx_cap[DP_MAX_DOWNSPREAD] &
+ DP_MAX_DOWNSPREAD_0_5);
+
+ train_info->sink_ssc = false;
+
+ drm_dp_dpcd_readb(&mtk_dp->aux, DP_MSTM_CAP, &val);
+ if (val & DP_MST_CAP) {
+ /* Clear DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0 */
+ drm_dp_dpcd_readb(&mtk_dp->aux,
+ DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0, &val);
+ if (val)
+ drm_dp_dpcd_writeb(&mtk_dp->aux,
+ DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0,
+ val);
+ }
+
+ return 0;
+}
+
+static void mtk_dp_train_change_mode(struct mtk_dp *mtk_dp)
+{
+ phy_reset(mtk_dp->phy);
+ mtk_dp_reset_swing_pre_emphasis(mtk_dp);
+}
+
+static int mtk_dp_train_start(struct mtk_dp *mtk_dp)
+{
+ int ret = 0;
+ u8 lane_count;
+ u8 link_rate;
+ u8 train_limit;
+ u8 max_link_rate;
+
+ link_rate = mtk_dp->rx_cap[1];
+ lane_count = mtk_dp->rx_cap[2] & 0x1F;
+
+ mtk_dp->train_info.link_rate = min(mtk_dp->max_linkrate, link_rate);
+ mtk_dp->train_info.lane_count = min(mtk_dp->max_lanes, lane_count);
+ link_rate = mtk_dp->train_info.link_rate;
+ lane_count = mtk_dp->train_info.lane_count;
+
+ switch (link_rate) {
+ case MTK_DP_LINKRATE_RBR:
+ case MTK_DP_LINKRATE_HBR:
+ case MTK_DP_LINKRATE_HBR2:
+ case MTK_DP_LINKRATE_HBR25:
+ case MTK_DP_LINKRATE_HBR3:
+ break;
+ default:
+ mtk_dp->train_info.link_rate = MTK_DP_LINKRATE_HBR3;
+ break;
+ };
+
+ max_link_rate = link_rate;
+ for (train_limit = 6; train_limit > 0; train_limit--) {
+ mtk_dp->train_info.cr_done = false;
+ mtk_dp->train_info.eq_done = false;
+
+ mtk_dp_train_change_mode(mtk_dp);
+ ret = mtk_dp_train_flow(mtk_dp, link_rate, lane_count);
+ if (ret)
+ return ret;
+
+ if (!mtk_dp->train_info.cr_done) {
+ switch (link_rate) {
+ case MTK_DP_LINKRATE_RBR:
+ lane_count = lane_count / 2;
+ link_rate = max_link_rate;
+ if (lane_count == 0)
+ return -EIO;
+ break;
+ case MTK_DP_LINKRATE_HBR:
+ link_rate = MTK_DP_LINKRATE_RBR;
+ break;
+ case MTK_DP_LINKRATE_HBR2:
+ link_rate = MTK_DP_LINKRATE_HBR;
+ break;
+ case MTK_DP_LINKRATE_HBR3:
+ link_rate = MTK_DP_LINKRATE_HBR2;
+ break;
+ default:
+ return -EINVAL;
+ };
+ } else if (!mtk_dp->train_info.eq_done) {
+ if (lane_count == 0)
+ return -EIO;
+
+ lane_count /= 2;
+ } else {
+ break;
+ }
+ }
+
+ if (train_limit == 0)
+ return -ETIMEDOUT;
+
+ return 0;
+}
+
+static void mtk_dp_video_enable(struct mtk_dp *mtk_dp, bool enable)
+{
+ if (enable) {
+ mtk_dp_set_tx_out(mtk_dp);
+ mtk_dp_video_mute(mtk_dp, false);
+ } else {
+ mtk_dp_video_mute(mtk_dp, true);
+ }
+}
+
+static void mtk_dp_video_config(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_mn_overwrite_disable(mtk_dp);
+
+ mtk_dp_set_msa(mtk_dp);
+
+ mtk_dp_set_color_depth(mtk_dp, mtk_dp->info.depth);
+ mtk_dp_set_color_format(mtk_dp, mtk_dp->info.format);
+}
+
+static int mtk_dp_training(struct mtk_dp *mtk_dp)
+{
+ bool training_done = false;
+ short max_retry = 50;
+ int ret = 0;
+
+ do {
+ switch (mtk_dp->train_state) {
+ case MTK_DP_TRAIN_STATE_TRAINING:
+ ret = mtk_dp_train_start(mtk_dp);
+ if (!ret)
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_NORMAL;
+ break;
+ case MTK_DP_TRAIN_STATE_NORMAL:
+ mtk_dp_video_config(mtk_dp);
+ mtk_dp_video_enable(mtk_dp, true);
+ training_done = true;
+ break;
+ default:
+ break;
+ }
+
+ if (ret) {
+ if (ret == -EAGAIN)
+ continue;
+ /*
+ * If we get any other error number, it doesn't
+ * make any sense to keep iterating.
+ */
+ break;
+ }
+ } while (!training_done || --max_retry);
+
+ return ret;
+}
+
+static void mtk_dp_init_port(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_set_idle_pattern(mtk_dp, true);
+ mtk_dp_initialize_priv_data(mtk_dp);
+
+ mtk_dp_initialize_settings(mtk_dp);
+ mtk_dp_initialize_aux_settings(mtk_dp);
+ mtk_dp_initialize_digital_settings(mtk_dp);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3690,
+ BIT(RX_REPLY_COMPLETE_MODE_AUX_TX_P0_SHIFT),
+ RX_REPLY_COMPLETE_MODE_AUX_TX_P0_MASK);
+ mtk_dp_initialize_hpd_detect_settings(mtk_dp);
+
+ mtk_dp_digital_sw_reset(mtk_dp);
+}
+
+static irqreturn_t mtk_dp_hpd_event_thread(int hpd, void *dev)
+{
+ struct mtk_dp *mtk_dp = dev;
+ u8 buf[DP_RECEIVER_CAP_SIZE] = {};
+
+ if (mtk_dp->train_info.cable_state_change) {
+ mtk_dp->train_info.cable_state_change = false;
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE,
+ DP_PWR_STATE_BANDGAP_TPLL_LANE,
+ DP_PWR_STATE_MASK);
+ drm_dp_read_dpcd_caps(&mtk_dp->aux, buf);
+ mtk_dp->train_info.link_rate =
+ min_t(int, mtk_dp->max_linkrate,
+ buf[mtk_dp->max_linkrate]);
+ mtk_dp->train_info.lane_count =
+ min_t(int, mtk_dp->max_lanes,
+ drm_dp_max_lane_count(buf));
+ }
+
+ if (mtk_dp->train_info.irq_sta.hpd_inerrupt) {
+ dev_dbg(mtk_dp->dev, "MTK_DP_HPD_INTERRUPT\n");
+ mtk_dp->train_info.irq_sta.hpd_inerrupt = false;
+ mtk_dp_hpd_sink_event(mtk_dp);
+ }
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * We need to handle HPD signal in eDP even though eDP is a always connected
+ * device. Besides connected status, there is another feature for HPD signal -
+ * HPD pulse: it presents an IRQ from sink devices to source devices (Refer to
+ * 5.1.4 of DP1.4 spec).
+ */
+static irqreturn_t mtk_dp_hpd_isr_handler(struct mtk_dp *mtk_dp)
+{
+ bool connected;
+ u32 irq_status = mtk_dp_swirq_get_clear(mtk_dp) |
+ mtk_dp_hwirq_get_clear(mtk_dp);
+ struct mtk_dp_train_info *train_info = &mtk_dp->train_info;
+
+ if (irq_status & MTK_DP_HPD_INTERRUPT)
+ train_info->irq_sta.hpd_inerrupt = true;
+ if (irq_status & MTK_DP_HPD_CONNECT)
+ train_info->irq_sta.hpd_connect = true;
+ if (irq_status & MTK_DP_HPD_DISCONNECT)
+ train_info->irq_sta.hpd_disconnect = true;
+
+ if (!irq_status)
+ return IRQ_HANDLED;
+
+ connected = mtk_dp_plug_state(mtk_dp);
+ if (connected || !train_info->cable_plugged_in)
+ train_info->irq_sta.hpd_disconnect = false;
+ else if (!connected || train_info->cable_plugged_in)
+ train_info->irq_sta.hpd_connect = false;
+
+ if (!(train_info->irq_sta.hpd_connect ||
+ train_info->irq_sta.hpd_disconnect))
+ return IRQ_WAKE_THREAD;
+
+ if (train_info->irq_sta.hpd_connect) {
+ train_info->irq_sta.hpd_connect = false;
+ train_info->cable_plugged_in = true;
+ } else {
+ train_info->irq_sta.hpd_disconnect = false;
+ train_info->cable_plugged_in = false;
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_TRAINING;
+ }
+ train_info->cable_state_change = true;
+
+ return IRQ_WAKE_THREAD;
+}
+
+static irqreturn_t mtk_dp_hpd_event(int hpd, void *dev)
+{
+ struct mtk_dp *mtk_dp = dev;
+ u32 irq_status;
+
+ irq_status = mtk_dp_read(mtk_dp, MTK_DP_TOP_IRQ_STATUS);
+
+ if (!irq_status)
+ return IRQ_HANDLED;
+
+ if (irq_status & RGS_IRQ_STATUS_TRANSMITTER)
+ return mtk_dp_hpd_isr_handler(mtk_dp);
+
+ return IRQ_HANDLED;
+}
+
+static int mtk_dp_dt_parse(struct mtk_dp *mtk_dp,
+ struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ int ret = 0;
+ void __iomem *base;
+ u16 linkrate;
+
+ base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ mtk_dp->regs = devm_regmap_init_mmio(dev, base, &mtk_dp_regmap_config);
+ if (IS_ERR(mtk_dp->regs))
+ return PTR_ERR(mtk_dp->regs);
+
+ ret = device_property_read_u8(dev, "max-lanes", &mtk_dp->max_lanes);
+ if (ret)
+ return ret;
+
+ ret = device_property_read_u16(dev, "max-linkrate", &linkrate);
+ if (ret)
+ return ret;
+
+ switch (linkrate) {
+ case 8100: /* 8.1G */
+ mtk_dp->max_linkrate = MTK_DP_LINKRATE_HBR3;
+ break;
+ case 5400: /* 5.4G */
+ mtk_dp->max_linkrate = MTK_DP_LINKRATE_HBR2;
+ break;
+ case 2700: /* 2.7G */
+ mtk_dp->max_linkrate = MTK_DP_LINKRATE_HBR;
+ break;
+ case 1620: /* 1.62G */
+ mtk_dp->max_linkrate = MTK_DP_LINKRATE_RBR;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static struct edid *mtk_dp_get_edid(struct drm_bridge *bridge,
+ struct drm_connector *connector)
+{
+ struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+ bool enabled = mtk_dp->enabled;
+ struct edid *new_edid = NULL;
+
+ if (!enabled)
+ drm_bridge_chain_pre_enable(bridge);
+
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_SET_POWER, DP_SET_POWER_D0);
+ usleep_range(2000, 5000);
+
+ new_edid = drm_get_edid(connector, &mtk_dp->aux.ddc);
+
+ if (!enabled)
+ drm_bridge_chain_post_disable(bridge);
+
+ return new_edid;
+}
+
+static ssize_t mtk_dp_aux_transfer(struct drm_dp_aux *mtk_aux,
+ struct drm_dp_aux_msg *msg)
+{
+ struct mtk_dp *mtk_dp;
+ bool is_read;
+ u8 request;
+ size_t accessed_bytes = 0;
+ int ret = 0;
+
+ mtk_dp = container_of(mtk_aux, struct mtk_dp, aux);
+
+ if (!mtk_dp->train_info.cable_plugged_in ||
+ mtk_dp->train_info.irq_sta.hpd_disconnect) {
+ ret = -EAGAIN;
+ goto err;
+ }
+
+ switch (msg->request) {
+ case DP_AUX_I2C_MOT:
+ case DP_AUX_I2C_WRITE:
+ case DP_AUX_NATIVE_WRITE:
+ case DP_AUX_I2C_WRITE_STATUS_UPDATE:
+ case DP_AUX_I2C_WRITE_STATUS_UPDATE | DP_AUX_I2C_MOT:
+ request = msg->request & ~DP_AUX_I2C_WRITE_STATUS_UPDATE;
+ is_read = false;
+ break;
+ case DP_AUX_I2C_READ:
+ case DP_AUX_NATIVE_READ:
+ case DP_AUX_I2C_READ | DP_AUX_I2C_MOT:
+ request = msg->request;
+ is_read = true;
+ break;
+ default:
+ drm_err(mtk_aux->drm_dev, "invalid aux cmd = %d\n",
+ msg->request);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ if (msg->size == 0) {
+ ret = mtk_dp_aux_do_transfer(mtk_dp, is_read, request,
+ msg->address + accessed_bytes,
+ msg->buffer + accessed_bytes, 0);
+ } else {
+ while (accessed_bytes < msg->size) {
+ size_t to_access =
+ min_t(size_t, DP_AUX_MAX_PAYLOAD_BYTES,
+ msg->size - accessed_bytes);
+
+ ret = mtk_dp_aux_do_transfer(mtk_dp, is_read, request,
+ msg->address + accessed_bytes,
+ msg->buffer + accessed_bytes,
+ to_access);
+
+ if (ret) {
+ drm_info(mtk_dp->drm_dev,
+ "Failed to do AUX transfer: %d\n", ret);
+ break;
+ }
+ accessed_bytes += to_access;
+ }
+ }
+err:
+ if (ret) {
+ msg->reply = DP_AUX_NATIVE_REPLY_NACK | DP_AUX_I2C_REPLY_NACK;
+ return ret;
+ }
+
+ msg->reply = DP_AUX_NATIVE_REPLY_ACK | DP_AUX_I2C_REPLY_ACK;
+ return msg->size;
+}
+
+static void mtk_dp_poweroff(struct mtk_dp *mtk_dp)
+{
+ mutex_lock(&mtk_dp->dp_lock);
+
+ mtk_dp_hwirq_enable(mtk_dp, false);
+ mtk_dp_power_disable(mtk_dp);
+ phy_exit(mtk_dp->phy);
+
+ mutex_unlock(&mtk_dp->dp_lock);
+}
+
+static int mtk_dp_poweron(struct mtk_dp *mtk_dp)
+{
+ int ret = 0;
+
+ mutex_lock(&mtk_dp->dp_lock);
+
+ ret = phy_init(mtk_dp->phy);
+ if (ret) {
+ dev_err(mtk_dp->dev, "Failed to initialize phy: %d\n", ret);
+ goto err_phy_init;
+ }
+ ret = mtk_dp_phy_configure(mtk_dp, MTK_DP_LINKRATE_RBR, 1);
+ if (ret) {
+ dev_err(mtk_dp->dev, "Failed to configure phy: %d\n", ret);
+ goto err_phy_config;
+ }
+
+ mtk_dp_init_port(mtk_dp);
+ mtk_dp_power_enable(mtk_dp);
+
+err_phy_config:
+ phy_exit(mtk_dp->phy);
+err_phy_init:
+ mutex_unlock(&mtk_dp->dp_lock);
+ return ret;
+}
+
+static int mtk_dp_bridge_attach(struct drm_bridge *bridge,
+ enum drm_bridge_attach_flags flags)
+{
+ struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+ int ret;
+
+ ret = mtk_dp_poweron(mtk_dp);
+ if (ret)
+ return ret;
+
+ if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
+ dev_err(mtk_dp->dev, "Driver does not provide a connector!");
+ return -EINVAL;
+ }
+
+ if (mtk_dp->next_bridge) {
+ ret = drm_bridge_attach(bridge->encoder, mtk_dp->next_bridge,
+ &mtk_dp->bridge, flags);
+ if (ret) {
+ drm_warn(mtk_dp->drm_dev,
+ "Failed to attach external bridge: %d\n", ret);
+ goto err_bridge_attach;
+ }
+
+ /* eDP is connected */
+ drm_helper_hpd_irq_event(mtk_dp->bridge.dev);
+ }
+
+ mtk_dp->drm_dev = bridge->dev;
+
+ mtk_dp_hwirq_enable(mtk_dp, true);
+
+ return 0;
+
+err_bridge_attach:
+ mtk_dp_poweroff(mtk_dp);
+ return ret;
+}
+
+static void mtk_dp_bridge_detach(struct drm_bridge *bridge)
+{
+ struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+
+ mtk_dp->drm_dev = NULL;
+ mtk_dp_poweroff(mtk_dp);
+}
+
+static void mtk_dp_bridge_atomic_disable(struct drm_bridge *bridge,
+ struct drm_bridge_state *old_state)
+{
+ struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+
+ mtk_dp_video_mute(mtk_dp, true);
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_TRAINING;
+
+ mtk_dp->enabled = false;
+ /* Ensure the sink is muted */
+ msleep(20);
+}
+
+static void mtk_dp_parse_drm_mode_timings(struct mtk_dp *mtk_dp,
+ struct drm_display_mode *mode)
+{
+ struct mtk_dp_timings *timings = &mtk_dp->info.timings;
+
+ drm_display_mode_to_videomode(mode, &timings->vm);
+ timings->frame_rate = drm_mode_vrefresh(mode);
+}
+
+static void mtk_dp_bridge_atomic_enable(struct drm_bridge *bridge,
+ struct drm_bridge_state *old_state)
+{
+ struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+
+ mtk_dp->conn = drm_atomic_get_new_connector_for_encoder(old_state->base.state,
+ bridge->encoder);
+ if (!mtk_dp->conn) {
+ drm_err(mtk_dp->drm_dev,
+ "Can't enable bridge as connector is missing\n");
+ return;
+ }
+
+ mtk_dp_video_mute(mtk_dp, true);
+
+ if (mtk_dp_parse_capabilities(mtk_dp)) {
+ drm_err(mtk_dp->drm_dev, "Can't parse capabilities\n");
+ return;
+ }
+
+ /* Training */
+ if (mtk_dp_training(mtk_dp)) {
+ drm_err(mtk_dp->drm_dev, "Training failed\n");
+ return;
+ }
+
+ mtk_dp->enabled = true;
+}
+
+static enum drm_mode_status
+mtk_dp_bridge_mode_valid(struct drm_bridge *bridge,
+ const struct drm_display_info *info,
+ const struct drm_display_mode *mode)
+{
+ struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+ u32 rx_linkrate = (u32)mtk_dp->train_info.link_rate * 27000;
+ u32 bpp = info->color_formats & DRM_COLOR_FORMAT_YCBCR422 ? 16 : 24;
+
+ if (rx_linkrate * mtk_dp->train_info.lane_count < mode->clock * bpp / 8)
+ return MODE_CLOCK_HIGH;
+
+ if (mode->clock > 600000)
+ return MODE_CLOCK_HIGH;
+
+ if ((mode->clock * 1000) / (mode->htotal * mode->vtotal) >
+ MTK_VDOSYS1_MAX_FRAMERATE)
+ return MODE_CLOCK_HIGH;
+
+ return MODE_OK;
+}
+
+static u32 *mtk_dp_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge,
+ struct drm_bridge_state *bridge_state,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state,
+ unsigned int *num_output_fmts)
+{
+ u32 *output_fmts;
+
+ *num_output_fmts = 0;
+ output_fmts = kmalloc(sizeof(*output_fmts), GFP_KERNEL);
+ if (!output_fmts)
+ return NULL;
+ *num_output_fmts = 1;
+ output_fmts[0] = MEDIA_BUS_FMT_FIXED;
+ return output_fmts;
+}
+
+static const u32 mt8195_input_fmts[] = {
+ MEDIA_BUS_FMT_RGB888_1X24,
+ MEDIA_BUS_FMT_YUV8_1X24,
+ MEDIA_BUS_FMT_YUYV8_1X16,
+};
+
+static u32 *mtk_dp_bridge_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
+ struct drm_bridge_state *bridge_state,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state,
+ u32 output_fmt,
+ unsigned int *num_input_fmts)
+{
+ u32 *input_fmts;
+ struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+ struct drm_display_mode *mode = &crtc_state->adjusted_mode;
+ struct drm_display_info *display_info =
+ &conn_state->connector->display_info;
+ u32 rx_linkrate = (u32)mtk_dp->train_info.link_rate * 27000;
+
+ *num_input_fmts = 0;
+
+ if (((rx_linkrate * mtk_dp->train_info.lane_count) <
+ (mode->clock * 24 / 8)) &&
+ ((rx_linkrate * mtk_dp->train_info.lane_count) >
+ (mode->clock * 16 / 8)) &&
+ (display_info->color_formats & DRM_COLOR_FORMAT_YCBCR422)) {
+ input_fmts = kcalloc(1, sizeof(*input_fmts), GFP_KERNEL);
+ if (!input_fmts)
+ return NULL;
+ *num_input_fmts = 1;
+ input_fmts[0] = MEDIA_BUS_FMT_YUYV8_1X16;
+ } else {
+ input_fmts = kcalloc(ARRAY_SIZE(mt8195_input_fmts),
+ sizeof(*input_fmts),
+ GFP_KERNEL);
+ if (!input_fmts)
+ return NULL;
+
+ *num_input_fmts = ARRAY_SIZE(mt8195_input_fmts);
+ memcpy(input_fmts, mt8195_input_fmts, sizeof(mt8195_input_fmts));
+ }
+
+ return input_fmts;
+}
+
+static int mtk_dp_bridge_atomic_check(struct drm_bridge *bridge,
+ struct drm_bridge_state *bridge_state,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state)
+{
+ struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+ struct drm_crtc *crtc = conn_state->crtc;
+ unsigned int input_bus_format;
+
+ input_bus_format = bridge_state->input_bus_cfg.format;
+
+ dev_dbg(mtk_dp->dev, "input format 0x%04x, output format 0x%04x\n",
+ bridge_state->input_bus_cfg.format,
+ bridge_state->output_bus_cfg.format);
+
+ mtk_dp->input_fmt = input_bus_format;
+ if (mtk_dp->input_fmt == MEDIA_BUS_FMT_YUYV8_1X16)
+ mtk_dp->info.format = DP_PIXELFORMAT_YUV422;
+ else
+ mtk_dp->info.format = DP_PIXELFORMAT_RGB;
+
+ if (!crtc) {
+ drm_err(mtk_dp->drm_dev,
+ "Can't enable bridge as connector state doesn't have a crtc\n");
+ return -EINVAL;
+ }
+
+ mtk_dp_parse_drm_mode_timings(mtk_dp, &crtc_state->adjusted_mode);
+ if (mtk_dp_parse_capabilities(mtk_dp)) {
+ drm_err(mtk_dp->drm_dev,
+ "Can't enable bridge as nothing is plugged in\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct drm_bridge_funcs mtk_dp_bridge_funcs = {
+ .atomic_check = mtk_dp_bridge_atomic_check,
+ .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
+ .atomic_get_output_bus_fmts = mtk_dp_bridge_atomic_get_output_bus_fmts,
+ .atomic_get_input_bus_fmts = mtk_dp_bridge_atomic_get_input_bus_fmts,
+ .atomic_reset = drm_atomic_helper_bridge_reset,
+ .attach = mtk_dp_bridge_attach,
+ .detach = mtk_dp_bridge_detach,
+ .atomic_enable = mtk_dp_bridge_atomic_enable,
+ .atomic_disable = mtk_dp_bridge_atomic_disable,
+ .mode_valid = mtk_dp_bridge_mode_valid,
+ .get_edid = mtk_dp_get_edid,
+};
+
+static int mtk_dp_probe(struct platform_device *pdev)
+{
+ struct mtk_dp *mtk_dp;
+ struct device *dev = &pdev->dev;
+ int ret;
+ int irq_num = 0;
+
+ mtk_dp = devm_kzalloc(dev, sizeof(*mtk_dp), GFP_KERNEL);
+ if (!mtk_dp)
+ return -ENOMEM;
+
+ mtk_dp->dev = dev;
+
+ irq_num = platform_get_irq(pdev, 0);
+ if (irq_num < 0)
+ return dev_err_probe(dev, irq_num,
+ "failed to request dp irq resource\n");
+
+ mtk_dp->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0);
+ if (IS_ERR(mtk_dp->next_bridge))
+ return dev_err_probe(dev, PTR_ERR(mtk_dp->next_bridge),
+ "Failed to get bridge\n");
+
+ ret = mtk_dp_dt_parse(mtk_dp, pdev);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to parse dt\n");
+
+ drm_dp_aux_init(&mtk_dp->aux);
+ mtk_dp->aux.name = "aux_mtk_dp";
+ mtk_dp->aux.transfer = mtk_dp_aux_transfer;
+
+ ret = devm_request_threaded_irq(dev, irq_num, mtk_dp_hpd_event,
+ mtk_dp_hpd_event_thread,
+ IRQ_TYPE_LEVEL_HIGH, dev_name(dev),
+ mtk_dp);
+ if (ret)
+ return dev_err_probe(dev, -EPROBE_DEFER,
+ "failed to request mediatek dptx irq\n");
+
+ mutex_init(&mtk_dp->dp_lock);
+
+ platform_set_drvdata(pdev, mtk_dp);
+
+ mtk_dp->phy_dev = platform_device_register_data(dev, "mediatek-dp-phy",
+ PLATFORM_DEVID_AUTO,
+ &mtk_dp->regs,
+ sizeof(struct regmap *));
+ if (IS_ERR(mtk_dp->phy_dev))
+ return dev_err_probe(dev, PTR_ERR(mtk_dp->phy_dev),
+ "Failed to create device mediatek-dp-phy\n");
+
+ mtk_dp_get_calibration_data(mtk_dp);
+
+ mtk_dp->phy = devm_phy_get(&mtk_dp->phy_dev->dev, "dp");
+
+ if (IS_ERR(mtk_dp->phy)) {
+ platform_device_unregister(mtk_dp->phy_dev);
+ return dev_err_probe(dev, PTR_ERR(mtk_dp->phy),
+ "Failed to get phy\n");
+ }
+
+ mtk_dp->bridge.funcs = &mtk_dp_bridge_funcs;
+ mtk_dp->bridge.of_node = dev->of_node;
+
+ mtk_dp->bridge.ops =
+ DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID | DRM_BRIDGE_OP_HPD;
+ mtk_dp->bridge.type = DRM_MODE_CONNECTOR_eDP;
+
+ drm_bridge_add(&mtk_dp->bridge);
+
+ pm_runtime_enable(dev);
+ pm_runtime_get_sync(dev);
+
+ return 0;
+}
+
+static int mtk_dp_remove(struct platform_device *pdev)
+{
+ struct mtk_dp *mtk_dp = platform_get_drvdata(pdev);
+
+ platform_device_unregister(mtk_dp->phy_dev);
+ mtk_dp_video_mute(mtk_dp, true);
+
+ pm_runtime_disable(&pdev->dev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int mtk_dp_suspend(struct device *dev)
+{
+ struct mtk_dp *mtk_dp = dev_get_drvdata(dev);
+
+ mtk_dp_power_disable(mtk_dp);
+
+ mtk_dp_hwirq_enable(mtk_dp, false);
+
+ pm_runtime_put_sync(dev);
+
+ return 0;
+}
+
+static int mtk_dp_resume(struct device *dev)
+{
+ struct mtk_dp *mtk_dp = dev_get_drvdata(dev);
+
+ pm_runtime_get_sync(dev);
+
+ mtk_dp_init_port(mtk_dp);
+ mtk_dp_hwirq_enable(mtk_dp, true);
+ mtk_dp_power_enable(mtk_dp);
+
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(mtk_dp_pm_ops, mtk_dp_suspend, mtk_dp_resume);
+
+static const struct of_device_id mtk_dp_of_match[] = {
+ { .compatible = "mediatek,mt8195-edp-tx" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, mtk_dp_of_match);
+
+struct platform_driver mtk_dp_driver = {
+ .probe = mtk_dp_probe,
+ .remove = mtk_dp_remove,
+ .driver = {
+ .name = "mediatek-drm-dp",
+ .of_match_table = mtk_dp_of_match,
+ .pm = &mtk_dp_pm_ops,
+ },
+};
+
+MODULE_AUTHOR("Jitao Shi <jitao.shi@mediatek.com>");
+MODULE_AUTHOR("Markus Schneider-Pargmann <msp@baylibre.com>");
+MODULE_DESCRIPTION("MediaTek DisplayPort Driver");
+MODULE_LICENSE("GPL");
new file mode 100644
@@ -0,0 +1,545 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2019-2022 MediaTek Inc.
+ * Copyright (c) 2022 BayLibre
+ */
+#ifndef _MTK_DP_REG_H_
+#define _MTK_DP_REG_H_
+
+#define TOP_OFFSET 0x2000
+#define ENC0_OFFSET 0x3000
+#define ENC1_OFFSET 0x3200
+#define TRANS_OFFSET 0x3400
+#define AUX_OFFSET 0x3600
+#define SEC_OFFSET 0x4000
+
+#define MTK_DP_SIP_ATF_VIDEO_UNMUTE BIT(5)
+#define MTK_DP_SIP_ATF_EDP_VIDEO_UNMUTE (BIT(0) | BIT(5))
+
+#define DP_PHY_GLB_BIAS_GEN_00 0
+#define RG_XTP_GLB_BIAS_INTR_CTRL GENMASK(20, 16)
+
+#define DP_PHY_GLB_DPAUX_TX 0x8
+#define RG_CKM_PT0_CKTX_IMPSEL GENMASK(23, 20)
+
+#define DP_PHY_LANE_TX_0 0x104
+#define RG_XTP_LN0_TX_IMPSEL_PMOS GENMASK(15, 12)
+#define RG_XTP_LN0_TX_IMPSEL_NMOS GENMASK(19, 16)
+
+#define DP_PHY_LANE_TX_1 0x204
+#define RG_XTP_LN1_TX_IMPSEL_PMOS GENMASK(15, 12)
+#define RG_XTP_LN1_TX_IMPSEL_NMOS GENMASK(19, 16)
+
+#define DP_PHY_LANE_TX_2 0x304
+#define RG_XTP_LN2_TX_IMPSEL_PMOS GENMASK(15, 12)
+#define RG_XTP_LN2_TX_IMPSEL_NMOS GENMASK(19, 16)
+
+#define DP_PHY_LANE_TX_3 0x404
+#define RG_XTP_LN3_TX_IMPSEL_PMOS GENMASK(15, 12)
+#define RG_XTP_LN3_TX_IMPSEL_NMOS GENMASK(19, 16)
+
+#define MTK_DP_HPD_DISCONNECT BIT(1)
+#define MTK_DP_HPD_CONNECT BIT(2)
+#define MTK_DP_HPD_INTERRUPT BIT(3)
+
+#define MTK_DP_0034 0x34
+#define DA_XTP_GLB_CKDET_EN_FORCE_VAL BIT(15)
+#define DA_XTP_GLB_CKDET_EN_FORCE_EN BIT(14)
+#define DA_CKM_INTCKTX_EN_FORCE_VAL BIT(13)
+#define DA_CKM_INTCKTX_EN_FORCE_EN BIT(12)
+#define DA_CKM_CKTX0_EN_FORCE_VAL BIT(11)
+#define DA_CKM_CKTX0_EN_FORCE_EN BIT(10)
+#define DA_CKM_XTAL_CK_FORCE_VAL BIT(9)
+#define DA_CKM_XTAL_CK_FORCE_EN BIT(8)
+#define DA_CKM_BIAS_LPF_EN_FORCE_VAL BIT(7)
+#define DA_CKM_BIAS_LPF_EN_FORCE_EN BIT(6)
+#define DA_CKM_BIAS_EN_FORCE_VAL BIT(5)
+#define DA_CKM_BIAS_EN_FORCE_EN BIT(4)
+#define DA_XTP_GLB_AVD10_ON_FORCE_VAL BIT(3)
+#define DA_XTP_GLB_AVD10_ON_FORCE BIT(2)
+#define DA_XTP_GLB_LDO_EN_FORCE_VAL BIT(1)
+#define DA_XTP_GLB_LDO_EN_FORCE_EN BIT(0)
+
+#define MTK_DP_1040 0x1040
+#define RG_DPAUX_RX_VALID_DEGLITCH_EN BIT(2)
+#define RG_XTP_GLB_CKDET_EN BIT(1)
+#define RG_DPAUX_RX_EN BIT(0)
+
+#define MTK_DP_ENC0_P0_3000 (ENC0_OFFSET + 0x00)
+#define LANE_NUM_DP_ENC0_P0_MASK GENMASK(1, 0)
+#define VIDEO_MUTE_SW_DP_ENC0_P0_MASK BIT(2)
+#define VIDEO_MUTE_SW_DP_ENC0_P0_SHIFT BIT(1)
+#define VIDEO_MUTE_SEL_DP_ENC0_P0_MASK BIT(3)
+#define VIDEO_MUTE_SEL_DP_ENC0_P0_SHIFT GENMASK(1, 0)
+#define ENHANCED_FRAME_EN_DP_ENC0_P0_MASK BIT(4)
+#define ENHANCED_FRAME_EN_DP_ENC0_P0_SHIFT BIT(2)
+
+#define MTK_DP_ENC0_P0_3004 (ENC0_OFFSET + 0x04)
+#define VIDEO_M_CODE_SEL_DP_ENC0_P0_MASK BIT(8)
+#define VIDEO_M_CODE_SEL_DP_ENC0_P0_SHIFT BIT(3)
+#define DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_MASK BIT(9)
+#define DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_SHIFT (BIT(0) | BIT(3))
+
+#define MTK_DP_ENC0_P0_3008 (ENC0_OFFSET + 0x08)
+#define VIDEO_M_CODE_SW_0_DP_ENC0_P0_MASK GENMASK(15, 0)
+
+#define MTK_DP_ENC0_P0_300C (ENC0_OFFSET + 0x0C)
+#define VIDEO_M_CODE_SW_1_DP_ENC0_P0_MASK GENMASK(7, 0)
+
+#define MTK_DP_ENC0_P0_3010 (ENC0_OFFSET + 0x10)
+#define HTOTAL_SW_DP_ENC0_P0_MASK GENMASK(15, 0)
+
+#define MTK_DP_ENC0_P0_3014 (ENC0_OFFSET + 0x14)
+#define VTOTAL_SW_DP_ENC0_P0_MASK GENMASK(15, 0)
+
+#define MTK_DP_ENC0_P0_3018 (ENC0_OFFSET + 0x18)
+#define HSTART_SW_DP_ENC0_P0_MASK GENMASK(15, 0)
+
+#define MTK_DP_ENC0_P0_301C (ENC0_OFFSET + 0x1C)
+#define VSTART_SW_DP_ENC0_P0_MASK GENMASK(15, 0)
+
+#define MTK_DP_ENC0_P0_3020 (ENC0_OFFSET + 0x20)
+#define HWIDTH_SW_DP_ENC0_P0_MASK GENMASK(15, 0)
+
+#define MTK_DP_ENC0_P0_3024 (ENC0_OFFSET + 0x24)
+#define VHEIGHT_SW_DP_ENC0_P0_MASK GENMASK(15, 0)
+
+#define MTK_DP_ENC0_P0_3028 (ENC0_OFFSET + 0x28)
+#define HSW_SW_DP_ENC0_P0_MASK GENMASK(14, 0)
+#define HSW_SW_DP_ENC0_P0_SHIFT 0
+#define HSP_SW_DP_ENC0_P0_MASK BIT(15)
+
+#define MTK_DP_ENC0_P0_302C (ENC0_OFFSET + 0x2C)
+#define VSW_SW_DP_ENC0_P0_MASK GENMASK(14, 0)
+#define VSW_SW_DP_ENC0_P0_SHIFT 0
+#define VSP_SW_DP_ENC0_P0_MASK BIT(15)
+
+#define MTK_DP_ENC0_P0_3030 (ENC0_OFFSET + 0x30)
+#define HTOTAL_SEL_DP_ENC0_P0_SHIFT 0
+#define VTOTAL_SEL_DP_ENC0_P0_SHIFT BIT(0)
+#define HSTART_SEL_DP_ENC0_P0_SHIFT BIT(1)
+#define VSTART_SEL_DP_ENC0_P0_SHIFT GENMASK(1, 0)
+#define HWIDTH_SEL_DP_ENC0_P0_SHIFT BIT(2)
+#define VHEIGHT_SEL_DP_ENC0_P0_SHIFT (BIT(0) | BIT(2))
+#define HSP_SEL_DP_ENC0_P0_SHIFT GENMASK(2, 1)
+#define HSW_SEL_DP_ENC0_P0_SHIFT GENMASK(2, 0)
+#define VSP_SEL_DP_ENC0_P0_SHIFT BIT(3)
+#define VSW_SEL_DP_ENC0_P0_SHIFT (BIT(0) | BIT(3))
+#define VBID_AUDIO_MUTE_FLAG_SW_DP_ENC0_P0_MASK BIT(11)
+#define VBID_AUDIO_MUTE_SW_DP_ENC0_P0_SHIFT (BIT(0) | BIT(1) | BIT(3))
+#define VBID_AUDIO_MUTE_FLAG_SEL_DP_ENC0_P0_MASK BIT(12)
+#define VBID_AUDIO_MUTE_SEL_DP_ENC0_P0_SHIFT GENMASK(3, 2)
+
+#define MTK_DP_ENC0_P0_3034 (ENC0_OFFSET + 0x34)
+
+#define MTK_DP_ENC0_P0_3038 (ENC0_OFFSET + 0x38)
+#define VIDEO_SOURCE_SEL_DP_ENC0_P0_MASK BIT(11)
+#define VIDEO_SOURCE_SEL_DP_ENC0_P0_SHIFT (BIT(0) | BIT(1) | BIT(3))
+
+#define MTK_DP_ENC0_P0_303C (ENC0_OFFSET + 0x3C)
+#define SRAM_START_READ_THRD_DP_ENC0_P0_MASK GENMASK(5, 0)
+#define SRAM_START_READ_THRD_DP_ENC0_P0_SHIFT 0
+#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_MASK GENMASK(10, 8)
+#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT BIT(3)
+
+#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_16BIT \
+ (0 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT)
+#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_12BIT \
+ (1 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT)
+#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_10BIT \
+ (2 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT)
+#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_8BIT \
+ (3 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT)
+#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_6BIT \
+ (4 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT)
+#define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_MASK GENMASK(14, 12)
+#define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_SHIFT GENMASK(3, 2)
+#define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_RGB \
+ (0 << PIXEL_ENCODE_FORMAT_DP_ENC0_P0_SHIFT)
+#define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_YCBCR422 \
+ (1 << PIXEL_ENCODE_FORMAT_DP_ENC0_P0_SHIFT)
+#define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_YCBCR420 \
+ (2 << PIXEL_ENCODE_FORMAT_DP_ENC0_P0_SHIFT)
+#define VIDEO_MN_GEN_EN_DP_ENC0_P0_MASK BIT(15)
+#define VIDEO_MN_GEN_EN_DP_ENC0_P0_SHIFT GENMASK(3, 0)
+
+#define MTK_DP_ENC0_P0_3040 (ENC0_OFFSET + 0x40)
+#define SDP_DOWN_CNT_INIT_DP_ENC0_P0_MASK GENMASK(11, 0)
+#define SDP_DOWN_CNT_INIT_DP_ENC0_P0_SHIFT 0
+
+#define MTK_DP_ENC0_P0_3044 (ENC0_OFFSET + 0x44)
+#define VIDEO_N_CODE_0_DP_ENC0_P0_MASK GENMASK(15, 0)
+
+#define MTK_DP_ENC0_P0_3048 (ENC0_OFFSET + 0x48)
+#define VIDEO_N_CODE_1_DP_ENC0_P0_MASK GENMASK(7, 0)
+
+#define MTK_DP_ENC0_P0_304C (ENC0_OFFSET + 0x4C)
+#define VBID_VIDEO_MUTE_DP_ENC0_P0_MASK BIT(2)
+#define SDP_VSYNC_RISING_MASK_DP_ENC0_P0_MASK BIT(8)
+
+#define MTK_DP_ENC0_P0_3050 (ENC0_OFFSET + 0x50)
+#define VIDEO_N_CODE_MN_GEN_0_DP_ENC0_P0_MASK GENMASK(15, 0)
+
+#define MTK_DP_ENC0_P0_3054 (ENC0_OFFSET + 0x54)
+#define VIDEO_N_CODE_MN_GEN_1_DP_ENC0_P0_MASK GENMASK(7, 0)
+
+#define MTK_DP_ENC0_P0_3064 (ENC0_OFFSET + 0x64)
+#define HDE_NUM_LAST_DP_ENC0_P0_MASK GENMASK(15, 0)
+
+#define MTK_DP_ENC0_P0_3088 (ENC0_OFFSET + 0x88)
+#define AU_EN_DP_ENC0_P0_MASK BIT(6)
+#define AU_EN_DP_ENC0_P0_SHIFT GENMASK(2, 1)
+#define AUDIO_8CH_EN_DP_ENC0_P0_MASK BIT(7)
+#define AUDIO_8CH_SEL_DP_ENC0_P0_MASK BIT(8)
+#define AUDIO_2CH_EN_DP_ENC0_P0_MASK BIT(14)
+#define AUDIO_2CH_SEL_DP_ENC0_P0_MASK BIT(15)
+
+#define MTK_DP_ENC0_P0_308C (ENC0_OFFSET + 0x8C)
+#define CH_STATUS_0_DP_ENC0_P0_MASK GENMASK(15, 0)
+
+#define MTK_DP_ENC0_P0_3090 (ENC0_OFFSET + 0x90)
+#define CH_STATUS_1_DP_ENC0_P0_MASK GENMASK(15, 0)
+
+#define MTK_DP_ENC0_P0_3094 (ENC0_OFFSET + 0x94)
+#define CH_STATUS_2_DP_ENC0_P0_MASK GENMASK(7, 0)
+
+#define MTK_DP_ENC0_P0_30A0 (ENC0_OFFSET + 0xA0)
+#define MTK_DP_ENC0_P0_30A4 (ENC0_OFFSET + 0xA4)
+#define AU_TS_CFG_DP_ENC0_P0_MASK GENMASK(7, 0)
+#define MTK_DP_ENC0_P0_30A8 (ENC0_OFFSET + 0xA8)
+#define MTK_DP_ENC0_P0_30AC (ENC0_OFFSET + 0xAC)
+#define MTK_DP_ENC0_P0_30B0 (ENC0_OFFSET + 0xB0)
+
+#define MTK_DP_ENC0_P0_30B4 (ENC0_OFFSET + 0xB4)
+#define ISRC_CFG_DP_ENC0_P0_MASK GENMASK(15, 8)
+#define ISRC_CFG_DP_ENC0_P0_SHIFT BIT(3)
+
+#define MTK_DP_ENC0_P0_30B8 (ENC0_OFFSET + 0xB8)
+
+#define MTK_DP_ENC0_P0_30BC (ENC0_OFFSET + 0xBC)
+#define ISRC_CONT_DP_ENC0_P0_MASK BIT(0)
+#define ISRC_CONT_DP_ENC0_P0_SHIFT 0
+#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_MASK GENMASK(10, 8)
+#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT BIT(3)
+#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_MUL_2 \
+ (1 << AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT)
+#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_MUL_4 \
+ (2 << AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT)
+#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_MUL_8 \
+ (3 << AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT)
+#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_DIV_2 \
+ (5 << AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT)
+#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_DIV_4 \
+ (6 << AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT)
+#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_DIV_8 \
+ (7 << AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT)
+
+#define MTK_DP_ENC0_P0_30D8 (ENC0_OFFSET + 0xD8)
+#define MTK_DP_ENC0_P0_312C (ENC0_OFFSET + 0x12C)
+#define ASP_HB2_DP_ENC0_P0_MASK GENMASK(7, 0)
+#define ASP_HB3_DP_ENC0_P0_MASK GENMASK(15, 8)
+#define ASP_HB3_DP_ENC0_P0_SHIFT BIT(3)
+
+#define MTK_DP_ENC0_P0_3130 (ENC0_OFFSET + 0x130)
+#define MTK_DP_ENC0_P0_3138 (ENC0_OFFSET + 0x138)
+#define MTK_DP_ENC0_P0_3154 (ENC0_OFFSET + 0x154)
+#define PGEN_HTOTAL_DP_ENC0_P0_MASK GENMASK(13, 0)
+#define MTK_DP_ENC0_P0_3158 (ENC0_OFFSET + 0x158)
+#define PGEN_HSYNC_RISING_DP_ENC0_P0_MASK GENMASK(13, 0)
+#define MTK_DP_ENC0_P0_315C (ENC0_OFFSET + 0x15C)
+#define PGEN_HSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK GENMASK(13, 0)
+#define MTK_DP_ENC0_P0_3160 (ENC0_OFFSET + 0x160)
+#define PGEN_HFDE_START_DP_ENC0_P0_MASK GENMASK(13, 0)
+#define MTK_DP_ENC0_P0_3164 (ENC0_OFFSET + 0x164)
+#define PGEN_HFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK GENMASK(13, 0)
+#define MTK_DP_ENC0_P0_3168 (ENC0_OFFSET + 0x168)
+#define PGEN_VTOTAL_DP_ENC0_P0_MASK GENMASK(12, 0)
+#define MTK_DP_ENC0_P0_316C (ENC0_OFFSET + 0x16C)
+#define PGEN_VSYNC_RISING_DP_ENC0_P0_MASK GENMASK(12, 0)
+#define MTK_DP_ENC0_P0_3170 (ENC0_OFFSET + 0x170)
+#define PGEN_VSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK GENMASK(12, 0)
+#define MTK_DP_ENC0_P0_3174 (ENC0_OFFSET + 0x174)
+#define PGEN_VFDE_START_DP_ENC0_P0_MASK GENMASK(12, 0)
+#define MTK_DP_ENC0_P0_3178 (ENC0_OFFSET + 0x178)
+#define PGEN_VFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK GENMASK(12, 0)
+#define MTK_DP_ENC0_P0_31B0 (ENC0_OFFSET + 0x1B0)
+#define PGEN_PATTERN_SEL_SHIFT BIT(2)
+#define PGEN_PATTERN_SEL_MASK GENMASK(6, 4)
+
+#define MTK_DP_ENC0_P0_31C8 (ENC0_OFFSET + 0x1C8)
+#define VSC_EXT_VESA_HB0_DP_ENC0_P0_MASK GENMASK(7, 0)
+#define VSC_EXT_VESA_HB1_DP_ENC0_P0_MASK GENMASK(15, 8)
+#define VSC_EXT_VESA_HB1_DP_ENC0_P0_SHIFT BIT(3)
+
+#define MTK_DP_ENC0_P0_31CC (ENC0_OFFSET + 0x1CC)
+#define VSC_EXT_VESA_HB2_DP_ENC0_P0_MASK GENMASK(7, 0)
+#define VSC_EXT_VESA_HB2_DP_ENC0_P0_SHIFT 0
+#define VSC_EXT_VESA_HB3_DP_ENC0_P0_MASK GENMASK(15, 8)
+
+#define MTK_DP_ENC0_P0_31D0 (ENC0_OFFSET + 0x1D0)
+#define VSC_EXT_CEA_HB0_DP_ENC0_P0_MASK GENMASK(7, 0)
+#define VSC_EXT_CEA_HB1_DP_ENC0_P0_MASK GENMASK(15, 8)
+#define VSC_EXT_CEA_HB1_DP_ENC0_P0_SHIFT BIT(3)
+
+#define MTK_DP_ENC0_P0_31D4 (ENC0_OFFSET + 0x1D4)
+#define VSC_EXT_CEA_HB2_DP_ENC0_P0_MASK GENMASK(7, 0)
+#define VSC_EXT_CEA_HB2_DP_ENC0_P0_SHIFT 0
+#define VSC_EXT_CEA_HB3_DP_ENC0_P0_MASK GENMASK(15, 8)
+
+#define MTK_DP_ENC0_P0_31D8 (ENC0_OFFSET + 0x1D8)
+#define VSC_EXT_VESA_NUM_DP_ENC0_P0_MASK GENMASK(5, 0)
+#define VSC_EXT_VESA_NUM_DP_ENC0_P0_SHIFT 0
+#define VSC_EXT_CEA_NUM_DP_ENC0_P0_MASK GENMASK(13, 8)
+#define VSC_EXT_CEA_NUM_DP_ENC0_P0_SHIFT BIT(3)
+
+#define MTK_DP_ENC0_P0_31DC (ENC0_OFFSET + 0x1DC)
+#define HDR0_CFG_DP_ENC0_P0_MASK GENMASK(7, 0)
+#define HDR0_CFG_DP_ENC0_P0_SHIFT 0
+#define MTK_DP_ENC0_P0_31E8 (ENC0_OFFSET + 0x1E8)
+#define MTK_DP_ENC0_P0_31EC (ENC0_OFFSET + 0x1EC)
+#define AUDIO_CH_SRC_SEL_DP_ENC0_P0_MASK BIT(4)
+#define AUDIO_CH_SRC_SEL_DP_ENC0_P0_SHIFT BIT(2)
+#define ISRC1_HB3_DP_ENC0_P0_MASK GENMASK(15, 8)
+#define ISRC1_HB3_DP_ENC0_P0_SHIFT BIT(3)
+
+#define MTK_DP_ENC1_P0_3200 (ENC1_OFFSET + 0x00)
+#define MTK_DP_ENC1_P0_3280 (ENC1_OFFSET + 0x80)
+#define SDP_PACKET_TYPE_DP_ENC1_P0_MASK GENMASK(4, 0)
+#define SDP_PACKET_W_DP_ENC1_P0 BIT(5)
+#define SDP_PACKET_W_DP_ENC1_P0_MASK BIT(5)
+#define SDP_PACKET_W_DP_ENC1_P0_SHIFT (BIT(0) | BIT(2))
+
+#define MTK_DP_ENC1_P0_328C (ENC1_OFFSET + 0x8C)
+#define MTK_DP_ENC1_P0_3290 (ENC1_OFFSET + 0x90)
+#define MTK_DP_ENC1_P0_32A0 (ENC1_OFFSET + 0xA0)
+#define MTK_DP_ENC1_P0_32A4 (ENC1_OFFSET + 0xA4)
+
+#define MTK_DP_ENC1_P0_3300 (ENC1_OFFSET + 0x100)
+#define VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_MASK GENMASK(9, 8)
+#define VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_SHIFT BIT(3)
+
+#define MTK_DP_ENC1_P0_3304 (ENC1_OFFSET + 0x104)
+#define AU_PRTY_REGEN_DP_ENC1_P0_MASK BIT(8)
+#define AU_CH_STS_REGEN_DP_ENC1_P0_MASK BIT(9)
+#define AUDIO_SAMPLE_PRSENT_REGEN_DP_ENC1_P0_MASK (BIT(12))
+
+#define MTK_DP_ENC1_P0_3324 (ENC1_OFFSET + 0x124)
+#define AUDIO_SOURCE_MUX_DP_ENC1_P0_MASK GENMASK(9, 8)
+#define AUDIO_SOURCE_MUX_DP_ENC1_P0_SHIFT BIT(3)
+#define AUDIO_SOURCE_MUX_DP_ENC1_P0_DPRX \
+ (0 << AUDIO_SOURCE_MUX_DP_ENC1_P0_SHIFT)
+
+#define MTK_DP_ENC1_P0_3364 (ENC1_OFFSET + 0x164)
+#define SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_MASK GENMASK(11, 0)
+#define SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_SHIFT 0
+#define FIFO_READ_START_POINT_DP_ENC1_P0_MASK GENMASK(15, 12)
+#define FIFO_READ_START_POINT_DP_ENC1_P0_SHIFT GENMASK(3, 2)
+
+#define MTK_DP_ENC1_P0_3368 (ENC1_OFFSET + 0x168)
+#define VIDEO_SRAM_FIFO_CNT_RESET_SEL_DP_ENC1_P0_SHIFT 0
+#define VIDEO_STABLE_CNT_THRD_DP_ENC1_P0_SHIFT BIT(2)
+#define SDP_DP13_EN_DP_ENC1_P0_SHIFT BIT(3)
+#define BS2BS_MODE_DP_ENC1_P0_MASK GENMASK(13, 12)
+#define BS2BS_MODE_DP_ENC1_P0_SHIFT GENMASK(3, 2)
+
+#define MTK_DP_ENC1_P0_33F4 (ENC1_OFFSET + 0x1F4)
+
+#define MTK_DP_TRANS_P0_3400 (TRANS_OFFSET + 0)
+#define PATTERN1_EN_DP_TRANS_P0_MASK BIT(12)
+#define PATTERN1_EN_DP_TRANS_P0_SHIFT GENMASK(3, 2)
+#define PATTERN2_EN_DP_TRANS_P0_MASK BIT(13)
+#define PATTERN3_EN_DP_TRANS_P0_MASK BIT(14)
+#define PATTERN4_EN_DP_TRANS_P0_MASK BIT(15)
+
+#define MTK_DP_TRANS_P0_3404 (TRANS_OFFSET + 0x4)
+#define DP_SCR_EN_DP_TRANS_P0_MASK BIT(0)
+
+#define MTK_DP_TRANS_P0_340C (TRANS_OFFSET + 0xC)
+#define DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_MASK BIT(13)
+#define DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_SHIFT \
+ (BIT(0) | BIT(2) | BIT(3))
+
+#define MTK_DP_TRANS_P0_3410 (TRANS_OFFSET + 0x10)
+#define HPD_DEB_THD_DP_TRANS_P0_MASK GENMASK(3, 0)
+#define HPD_DEB_THD_DP_TRANS_P0_SHIFT 0
+#define HPD_INT_THD_DP_TRANS_P0_MASK GENMASK(7, 4)
+#define HPD_INT_THD_DP_TRANS_P0_SHIFT BIT(2)
+#define HPD_INT_THD_DP_TRANS_P0_LOWER_500US \
+ (2 << HPD_INT_THD_DP_TRANS_P0_SHIFT)
+#define HPD_INT_THD_DP_TRANS_P0_UPPER_1100US \
+ (2 << (HPD_INT_THD_DP_TRANS_P0_SHIFT + 2))
+#define HPD_DISC_THD_DP_TRANS_P0_MASK GENMASK(11, 8)
+#define HPD_DISC_THD_DP_TRANS_P0_SHIFT BIT(3)
+#define HPD_CONN_THD_DP_TRANS_P0_MASK GENMASK(15, 12)
+#define HPD_CONN_THD_DP_TRANS_P0_SHIFT GENMASK(3, 2)
+
+#define MTK_DP_TRANS_P0_3414 (TRANS_OFFSET + 0x14)
+#define HPD_DB_DP_TRANS_P0_MASK BIT(2)
+
+#define MTK_DP_TRANS_P0_3418 (TRANS_OFFSET + 0x18)
+#define IRQ_CLR_DP_TRANS_P0_MASK GENMASK(3, 0)
+#define IRQ_MASK_DP_TRANS_P0_MASK GENMASK(7, 4)
+#define IRQ_MASK_DP_TRANS_P0_SHIFT BIT(2)
+#define IRQ_MASK_DP_TRANS_P0_DISC_IRQ (BIT(1) << IRQ_MASK_DP_TRANS_P0_SHIFT)
+#define IRQ_MASK_DP_TRANS_P0_CONN_IRQ (BIT(2) << IRQ_MASK_DP_TRANS_P0_SHIFT)
+#define IRQ_MASK_DP_TRANS_P0_INT_IRQ (BIT(3) << IRQ_MASK_DP_TRANS_P0_SHIFT)
+#define IRQ_STATUS_DP_TRANS_P0_MASK GENMASK(15, 12)
+#define IRQ_STATUS_DP_TRANS_P0_SHIFT GENMASK(3, 2)
+
+#define MTK_DP_TRANS_P0_342C (TRANS_OFFSET + 0x2C)
+#define XTAL_FREQ_DP_TRANS_P0_DEFAULT (BIT(0) | BIT(3) | BIT(5) | BIT(6))
+#define XTAL_FREQ_DP_TRANS_P0_MASK GENMASK(7, 0)
+
+#define MTK_DP_TRANS_P0_3430 (TRANS_OFFSET + 0x30)
+#define HPD_INT_THD_ECO_DP_TRANS_P0_MASK GENMASK(1, 0)
+#define HPD_INT_THD_ECO_DP_TRANS_P0_HIGH_BOUND_EXT BIT(1)
+
+#define MTK_DP_TRANS_P0_34A4 (TRANS_OFFSET + 0xA4)
+#define LANE_NUM_DP_TRANS_P0_MASK GENMASK(3, 2)
+#define LANE_NUM_DP_TRANS_P0_SHIFT BIT(1)
+
+#define MTK_DP_TRANS_P0_3540 (TRANS_OFFSET + 0x140)
+#define FEC_EN_DP_TRANS_P0_MASK BIT(0)
+#define FEC_EN_DP_TRANS_P0_SHIFT 0
+#define FEC_CLOCK_EN_MODE_DP_TRANS_P0_MASK BIT(3)
+#define FEC_CLOCK_EN_MODE_DP_TRANS_P0_SHIFT GENMASK(1, 0)
+
+#define MTK_DP_TRANS_P0_3580 (TRANS_OFFSET + 0x180)
+#define POST_MISC_DATA_LANE0_OV_DP_TRANS_P0_MASK BIT(8)
+#define POST_MISC_DATA_LANE1_OV_DP_TRANS_P0_MASK BIT(9)
+#define POST_MISC_DATA_LANE2_OV_DP_TRANS_P0_MASK (BIT(10))
+#define POST_MISC_DATA_LANE3_OV_DP_TRANS_P0_MASK (BIT(11))
+
+#define MTK_DP_TRANS_P0_35C4 (TRANS_OFFSET + 0x1C4)
+#define SW_IRQ_MASK_DP_TRANS_P0_MASK GENMASK(15, 0)
+
+#define MTK_DP_TRANS_P0_35C8 (TRANS_OFFSET + 0x1C8)
+#define SW_IRQ_CLR_DP_TRANS_P0_MASK GENMASK(15, 0)
+
+#define SW_IRQ_STATUS_DP_TRANS_P0_MASK GENMASK(15, 0)
+#define SW_IRQ_STATUS_DP_TRANS_P0_SHIFT 0
+
+#define MTK_DP_TRANS_P0_35D0 (TRANS_OFFSET + 0x1D0)
+#define SW_IRQ_FINAL_STATUS_DP_TRANS_P0_MASK GENMASK(15, 0)
+
+#define MTK_DP_TRANS_P0_35F0 (TRANS_OFFSET + 0x1F0)
+
+#define MTK_DP_AUX_P0_360C (AUX_OFFSET + 0xC)
+#define AUX_TIMEOUT_THR_AUX_TX_P0_MASK GENMASK(12, 0)
+
+#define MTK_DP_AUX_P0_3614 (AUX_OFFSET + 0x14)
+#define AUX_RX_UI_CNT_THR_AUX_TX_P0_MASK GENMASK(6, 0)
+#define AUX_RX_UI_CNT_THR_AUX_TX_P0_SHIFT 0
+
+#define MTK_DP_AUX_P0_3618 (AUX_OFFSET + 0x18)
+#define AUX_RX_FIFO_FULL_AUX_TX_P0_MASK BIT(9)
+#define AUX_RX_FIFO_WRITE_POINTER_AUX_TX_P0_MASK GENMASK(3, 0)
+
+#define MTK_DP_AUX_P0_3620 (AUX_OFFSET + 0x20)
+#define AUX_RD_MODE_AUX_TX_P0_MASK BIT(9)
+#define AUX_RX_FIFO_READ_PULSE_TX_P0_MASK BIT(8)
+#define AUX_RX_FIFO_R_PULSE_TX_P0_SHIFT BIT(3)
+#define AUX_RX_FIFO_READ_DATA_AUX_TX_P0_MASK GENMASK(7, 0)
+#define AUX_RX_FIFO_READ_DATA_AUX_TX_P0_SHIFT 0
+
+#define MTK_DP_AUX_P0_3624 (AUX_OFFSET + 0x24)
+#define AUX_RX_REPLY_COMMAND_AUX_TX_P0_MASK GENMASK(3, 0)
+
+#define MTK_DP_AUX_P0_3628 (AUX_OFFSET + 0x28)
+#define AUX_RX_PHY_STATE_AUX_TX_P0_MASK GENMASK(9, 0)
+#define AUX_RX_PHY_STATE_AUX_TX_P0_SHIFT 0
+#define AUX_RX_PHY_STATE_AUX_TX_P0_RX_IDLE \
+ (BIT(0) << AUX_RX_PHY_STATE_AUX_TX_P0_SHIFT)
+
+#define MTK_DP_AUX_P0_362C (AUX_OFFSET + 0x2C)
+#define AUX_NO_LENGTH_AUX_TX_P0_MASK BIT(0)
+#define AUX_NO_LENGTH_AUX_TX_P0_SHIFT 0
+#define AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK BIT(1)
+#define AUX_RESERVED_RW_0_AUX_TX_P0_MASK GENMASK(15, 2)
+
+#define MTK_DP_AUX_P0_3630 (AUX_OFFSET + 0x30)
+#define AUX_TX_REQUEST_READY_AUX_TX_P0_MASK BIT(3)
+#define AUX_TX_REQUEST_READY_AUX_TX_P0_SHIFT GENMASK(1, 0)
+
+#define MTK_DP_AUX_P0_3634 (AUX_OFFSET + 0x34)
+#define AUX_TX_OVER_SAMPLE_RATE_AUX_TX_P0_MASK GENMASK(15, 8)
+#define AUX_TX_OVER_SAMPLE_RATE_AUX_TX_P0_SHIFT BIT(3)
+
+#define MTK_DP_AUX_P0_3640 (AUX_OFFSET + 0x40)
+#define AUX_RX_RECV_COMPLETE_IRQ_TX_P0_MASK BIT(6)
+#define AUX_RX_AUX_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT GENMASK(2, 1)
+#define AUX_RX_EDID_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT (BIT(0) | BIT(2))
+#define AUX_RX_MCCS_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT BIT(2)
+#define AUX_RX_CMD_RECV_IRQ_AUX_TX_P0_SHIFT GENMASK(1, 0)
+#define AUX_RX_ADDR_RECV_IRQ_AUX_TX_P0_SHIFT BIT(1)
+#define AUX_RX_DATA_RECV_IRQ_AUX_TX_P0_SHIFT BIT(0)
+#define AUX_400US_TIMEOUT_IRQ_AUX_TX_P0_MASK BIT(0)
+#define AUX_400US_TIMEOUT_IRQ_AUX_TX_P0_SHIFT 0
+
+#define MTK_DP_AUX_P0_3644 (AUX_OFFSET + 0x44)
+#define MCU_REQUEST_COMMAND_AUX_TX_P0_MASK GENMASK(3, 0)
+
+#define MTK_DP_AUX_P0_3648 (AUX_OFFSET + 0x48)
+#define MCU_REQUEST_ADDRESS_LSB_AUX_TX_P0_MASK GENMASK(15, 0)
+
+#define MTK_DP_AUX_P0_364C (AUX_OFFSET + 0x4C)
+#define MCU_REQUEST_ADDRESS_MSB_AUX_TX_P0_MASK GENMASK(3, 0)
+
+#define MTK_DP_AUX_P0_3650 (AUX_OFFSET + 0x50)
+#define MCU_REQ_DATA_NUM_AUX_TX_P0_MASK GENMASK(15, 12)
+#define MCU_REQ_DATA_NUM_AUX_TX_P0_SHIFT GENMASK(3, 2)
+#define PHY_FIFO_RST_AUX_TX_P0_MASK BIT(9)
+#define MCU_ACK_TRAN_COMPLETE_AUX_TX_P0_MASK BIT(8)
+#define MCU_ACK_TRAN_COMPLETE_AUX_TX_P0_SHIFT BIT(3)
+
+#define MTK_DP_AUX_P0_3658 (AUX_OFFSET + 0x58)
+#define AUX_TX_OV_EN_AUX_TX_P0_MASK BIT(0)
+#define MTK_DP_AUX_P0_3690 (AUX_OFFSET + 0x90)
+#define RX_REPLY_COMPLETE_MODE_AUX_TX_P0_MASK BIT(8)
+#define RX_REPLY_COMPLETE_MODE_AUX_TX_P0_SHIFT BIT(3)
+#define MTK_DP_AUX_P0_3704 (AUX_OFFSET + 0x104)
+
+#define AUX_TX_FIFO_WRITE_DATA_NEW_MODE_TOGGLE_AUX_TX_P0_MASK BIT(1)
+#define AUX_TX_FIFO_NEW_MODE_EN_AUX_TX_P0_MASK BIT(2)
+#define AUX_TX_FIFO_NEW_MODE_EN_AUX_TX_P0_SHIFT BIT(1)
+
+#define MTK_DP_AUX_P0_3708 (AUX_OFFSET + 0x108)
+#define MTK_DP_AUX_P0_37C8 (AUX_OFFSET + 0x1C8)
+#define MTK_ATOP_EN_AUX_TX_P0_MASK BIT(0)
+#define MTK_ATOP_EN_AUX_TX_P0_SHIFT 0
+
+#define MTK_DP_TOP_PWR_STATE (TOP_OFFSET + 0x0)
+#define DP_PWR_STATE_MASK GENMASK(1, 0)
+#define DP_PWR_STATE_BANDGAP BIT(0)
+#define DP_PWR_STATE_BANDGAP_TPLL BIT(1)
+#define DP_PWR_STATE_BANDGAP_TPLL_LANE GENMASK(1, 0)
+
+#define MTK_DP_TOP_SWING_EMP (TOP_OFFSET + 0x4)
+#define DP_TX0_VOLT_SWING_MASK GENMASK(1, 0)
+#define DP_TX0_VOLT_SWING_SHIFT 0
+#define DP_TX0_PRE_EMPH_MASK GENMASK(3, 2)
+#define DP_TX0_PRE_EMPH_SHIFT BIT(1)
+#define DP_TX1_VOLT_SWING_MASK GENMASK(9, 8)
+#define DP_TX1_VOLT_SWING_SHIFT BIT(3)
+#define DP_TX1_PRE_EMPH_MASK GENMASK(11, 10)
+#define DP_TX2_VOLT_SWING_MASK GENMASK(17, 16)
+#define DP_TX2_PRE_EMPH_MASK GENMASK(19, 18)
+#define DP_TX3_VOLT_SWING_MASK GENMASK(25, 24)
+#define DP_TX3_PRE_EMPH_MASK GENMASK(27, 26)
+
+#define MTK_DP_TOP_RESET_AND_PROBE (TOP_OFFSET + 0x20)
+#define SW_RST_B_SHIFT 0
+#define SW_RST_B_PHYD (BIT(4) << SW_RST_B_SHIFT)
+
+#define MTK_DP_TOP_IRQ_STATUS (TOP_OFFSET + 0x28)
+#define RGS_IRQ_STATUS_SHIFT 0
+#define RGS_IRQ_STATUS_TRANSMITTER (BIT(1) << RGS_IRQ_STATUS_SHIFT)
+
+#define MTK_DP_TOP_IRQ_MASK (TOP_OFFSET + 0x2C)
+#define IRQ_MASK_AUX_TOP_IRQ BIT(2)
+
+#define MTK_DP_TOP_MEM_PD (TOP_OFFSET + 0x38)
+#define MEM_ISO_EN_SHIFT 0
+#define FUSE_SEL_SHIFT BIT(1)
+
+#endif /*_MTK_DP_REG_H_*/
@@ -1033,6 +1033,9 @@ static struct platform_driver * const mtk_drm_drivers[] = {
&mtk_disp_ovl_driver,
&mtk_disp_rdma_driver,
&mtk_dpi_driver,
+#if IS_REACHABLE(CONFIG_DRM_MEDIATEK_DP)
+ &mtk_dp_driver,
+#endif
&mtk_drm_platform_driver,
&mtk_dsi_driver,
&mtk_ethdr_driver,
@@ -67,6 +67,9 @@ extern struct platform_driver mtk_disp_ovl_adaptor_driver;
extern struct platform_driver mtk_disp_ovl_driver;
extern struct platform_driver mtk_disp_rdma_driver;
extern struct platform_driver mtk_dpi_driver;
+#if IS_REACHABLE(CONFIG_DRM_MEDIATEK_DP)
+extern struct platform_driver mtk_dp_driver;
+#endif
extern struct platform_driver mtk_dsi_driver;
extern struct platform_driver mtk_ethdr_driver;
extern struct platform_driver mtk_mdp_rdma_driver;