From patchwork Mon Aug 14 07:04:04 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?6buE5a626ZKX?= X-Patchwork-Id: 9898175 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 562F3602BA for ; Mon, 14 Aug 2017 07:04:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 43A531FE95 for ; Mon, 14 Aug 2017 07:04:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 35CA61FFAD; Mon, 14 Aug 2017 07:04:59 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_LOW autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id F2A1D1FE95 for ; 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Mon, 14 Aug 2017 07:04:53 +0000 Received: from regular1.263xmail.com ([211.150.99.133]) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1dh9Qd-0002YO-AG; Mon, 14 Aug 2017 07:04:51 +0000 Received: from hjc?rock-chips.com (unknown [192.168.167.232]) by regular1.263xmail.com (Postfix) with ESMTP id 615149068; Mon, 14 Aug 2017 15:04:19 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 Received: from localhost.localdomain (localhost [127.0.0.1]) by smtp.263.net (Postfix) with ESMTPA id 7583D39A; Mon, 14 Aug 2017 15:04:17 +0800 (CST) X-RL-SENDER: hjc@rock-chips.com X-FST-TO: seanpaul@chromium.org X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: hjc@rock-chips.com X-UNIQUE-TAG: X-ATTACHMENT-NUM: 0 X-SENDER: hjc@rock-chips.com X-DNS-TYPE: 0 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (Postfix) whith ESMTP id 9880OFAZQP; Mon, 14 Aug 2017 15:04:19 +0800 (CST) From: Sandy Huang To: seanpaul@chromium.org, Mark Yao , David Airlie , Heiko Stuebner Subject: [PATCH v3 3/3] drm/rockchip: Add support for Rockchip Soc LVDS Date: Mon, 14 Aug 2017 15:04:04 +0800 Message-Id: <1502694247-196435-1-git-send-email-hjc@rock-chips.com> X-Mailer: git-send-email 2.7.4 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170814_000448_700602_00AB849F X-CRM114-Status: GOOD ( 18.20 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, Sandy Huang , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This adds support for Rockchip soc lvds found on rk3288 Based on the patches from Mark yao and Heiko Stuebner Signed-off-by: Sandy Huang Signed-off-by: Mark yao Signed-off-by: Heiko Stuebner --- Changes: use drm_of_find_panel_or_bridge() to get panel or bridge. drivers/gpu/drm/rockchip/Kconfig | 9 + drivers/gpu/drm/rockchip/Makefile | 1 + drivers/gpu/drm/rockchip/rockchip_lvds.c | 652 +++++++++++++++++++++++++++++++ drivers/gpu/drm/rockchip/rockchip_lvds.h | 109 ++++++ 4 files changed, 771 insertions(+) create mode 100644 drivers/gpu/drm/rockchip/rockchip_lvds.c create mode 100644 drivers/gpu/drm/rockchip/rockchip_lvds.h diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig index 50c41c0..80672f4 100644 --- a/drivers/gpu/drm/rockchip/Kconfig +++ b/drivers/gpu/drm/rockchip/Kconfig @@ -59,3 +59,12 @@ config ROCKCHIP_INNO_HDMI This selects support for Rockchip SoC specific extensions for the Innosilicon HDMI driver. If you want to enable HDMI on RK3036 based SoC, you should select this option. + +config ROCKCHIP_LVDS + bool "Rockchip LVDS support" + depends on DRM_ROCKCHIP + help + Choose this option to enable support for Rockchip LVDS controllers. + Rockchip rk3288 SoC has LVDS TX Controller can be used, and it + support LVDS, rgb, dual LVDS output mode. say Y to enable its + driver. diff --git a/drivers/gpu/drm/rockchip/Makefile b/drivers/gpu/drm/rockchip/Makefile index fa8dc9d..a881d2c 100644 --- a/drivers/gpu/drm/rockchip/Makefile +++ b/drivers/gpu/drm/rockchip/Makefile @@ -12,5 +12,6 @@ rockchipdrm-$(CONFIG_ROCKCHIP_CDN_DP) += cdn-dp-core.o cdn-dp-reg.o rockchipdrm-$(CONFIG_ROCKCHIP_DW_HDMI) += dw_hdmi-rockchip.o rockchipdrm-$(CONFIG_ROCKCHIP_DW_MIPI_DSI) += dw-mipi-dsi.o rockchipdrm-$(CONFIG_ROCKCHIP_INNO_HDMI) += inno_hdmi.o +rockchipdrm-$(CONFIG_ROCKCHIP_LVDS) += rockchip_lvds.o obj-$(CONFIG_DRM_ROCKCHIP) += rockchipdrm.o diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.c b/drivers/gpu/drm/rockchip/rockchip_lvds.c new file mode 100644 index 0000000..532f2b6 --- /dev/null +++ b/drivers/gpu/drm/rockchip/rockchip_lvds.c @@ -0,0 +1,652 @@ +/* + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd + * Author: + * Mark Yao + * Sandy huang + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#include "../drm_crtc_internal.h" + +#include "rockchip_drm_drv.h" +#include "rockchip_drm_vop.h" +#include "rockchip_lvds.h" + +#define DISPLAY_OUTPUT_RGB 0 +#define DISPLAY_OUTPUT_LVDS 1 +#define DISPLAY_OUTPUT_DUAL_LVDS 2 + +#define connector_to_lvds(c) \ + container_of(c, struct rockchip_lvds, connector) + +#define encoder_to_lvds(c) \ + container_of(c, struct rockchip_lvds, encoder) + +/** + * rockchip_lvds_soc_data - rockchip lvds Soc private data + * @ch1_offset: lvds channel 1 registe offset + * grf_soc_con6: general registe offset for LVDS contrl + * grf_soc_con7: general registe offset for LVDS contrl + * has_vop_sel: to indicate whether need to choose from different VOP. + */ +struct rockchip_lvds_soc_data { + u32 ch1_offset; + int grf_soc_con6; + int grf_soc_con7; + bool has_vop_sel; +}; + +struct rockchip_lvds { + struct device *dev; + void __iomem *regs; + struct regmap *grf; + struct clk *pclk; + const struct rockchip_lvds_soc_data *soc_data; + int output; /* rgb lvds or dual lvds output */ + int format; /* vesa or jeida format */ + struct drm_device *drm_dev; + struct drm_panel *panel; + struct drm_bridge *bridge; + struct drm_connector connector; + struct drm_encoder encoder; + struct dev_pin_info *pins; + struct drm_display_mode mode; +}; + +static inline void lvds_writel(struct rockchip_lvds *lvds, u32 offset, u32 val) +{ + writel_relaxed(val, lvds->regs + offset); + if (lvds->output == DISPLAY_OUTPUT_LVDS) + return; + writel_relaxed(val, lvds->regs + offset + lvds->soc_data->ch1_offset); +} + +static inline int lvds_name_to_format(const char *s) +{ + if (strncmp(s, "jeida", 6) == 0) + return LVDS_FORMAT_JEIDA; + else if (strncmp(s, "vesa", 5) == 0) + return LVDS_FORMAT_VESA; + + return -EINVAL; +} + +static inline int lvds_name_to_output(const char *s) +{ + if (strncmp(s, "rgb", 3) == 0) + return DISPLAY_OUTPUT_RGB; + else if (strncmp(s, "lvds", 4) == 0) + return DISPLAY_OUTPUT_LVDS; + else if (strncmp(s, "duallvds", 8) == 0) + return DISPLAY_OUTPUT_DUAL_LVDS; + + return -EINVAL; +} + +static int rockchip_lvds_poweron(struct rockchip_lvds *lvds) +{ + int ret; + u32 val; + + ret = clk_enable(lvds->pclk); + if (ret < 0) { + DRM_DEV_ERROR(lvds->dev, "failed to enable lvds pclk %d\n", ret); + return ret; + } + ret = pm_runtime_get_sync(lvds->dev); + if (ret < 0) { + DRM_DEV_ERROR(lvds->dev, "failed to get pm runtime: %d\n", ret); + return ret; + } + val = RK3288_LVDS_CH0_REG0_LANE4_EN | RK3288_LVDS_CH0_REG0_LANE3_EN | + RK3288_LVDS_CH0_REG0_LANE2_EN | RK3288_LVDS_CH0_REG0_LANE1_EN | + RK3288_LVDS_CH0_REG0_LANE0_EN; + if (lvds->output == DISPLAY_OUTPUT_RGB) { + val |= RK3288_LVDS_CH0_REG0_TTL_EN | + RK3288_LVDS_CH0_REG0_LANECK_EN; + lvds_writel(lvds, RK3288_LVDS_CH0_REG0, val); + lvds_writel(lvds, RK3288_LVDS_CH0_REG2, + RK3288_LVDS_PLL_FBDIV_REG2(0x46)); + lvds_writel(lvds, RK3288_LVDS_CH0_REG4, + RK3288_LVDS_CH0_REG4_LANECK_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE4_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE3_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE2_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE1_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE0_TTL_MODE); + lvds_writel(lvds, RK3288_LVDS_CH0_REG5, + RK3288_LVDS_CH0_REG5_LANECK_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE4_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE3_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE2_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE1_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE0_TTL_DATA); + } else { + val |= RK3288_LVDS_CH0_REG0_LVDS_EN | + RK3288_LVDS_CH0_REG0_LANECK_EN; + lvds_writel(lvds, RK3288_LVDS_CH0_REG0, val); + lvds_writel(lvds, RK3288_LVDS_CH0_REG1, + RK3288_LVDS_CH0_REG1_LANECK_BIAS | + RK3288_LVDS_CH0_REG1_LANE4_BIAS | + RK3288_LVDS_CH0_REG1_LANE3_BIAS | + RK3288_LVDS_CH0_REG1_LANE2_BIAS | + RK3288_LVDS_CH0_REG1_LANE1_BIAS | + RK3288_LVDS_CH0_REG1_LANE0_BIAS); + lvds_writel(lvds, RK3288_LVDS_CH0_REG2, + RK3288_LVDS_CH0_REG2_RESERVE_ON | + RK3288_LVDS_CH0_REG2_LANECK_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE4_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE3_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE2_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE1_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE0_LVDS_MODE | + RK3288_LVDS_PLL_FBDIV_REG2(0x46)); + lvds_writel(lvds, RK3288_LVDS_CH0_REG4, 0x00); + lvds_writel(lvds, RK3288_LVDS_CH0_REG5, 0x00); + } + lvds_writel(lvds, RK3288_LVDS_CH0_REG3, RK3288_LVDS_PLL_FBDIV_REG3(0x46)); + lvds_writel(lvds, RK3288_LVDS_CH0_REGD, RK3288_LVDS_PLL_PREDIV_REGD(0x0a)); + lvds_writel(lvds, RK3288_LVDS_CH0_REG20, RK3288_LVDS_CH0_REG20_LSB); + + lvds_writel(lvds, RK3288_LVDS_CFG_REGC, RK3288_LVDS_CFG_REGC_PLL_ENABLE); + lvds_writel(lvds, RK3288_LVDS_CFG_REG21, RK3288_LVDS_CFG_REG21_TX_ENABLE); + + return 0; +} + +static void rockchip_lvds_poweroff(struct rockchip_lvds *lvds) +{ + int ret; + u32 val; + + lvds_writel(lvds, RK3288_LVDS_CFG_REG21, RK3288_LVDS_CFG_REG21_TX_ENABLE); + lvds_writel(lvds, RK3288_LVDS_CFG_REGC, RK3288_LVDS_CFG_REGC_PLL_ENABLE); + val = LVDS_DUAL | LVDS_TTL_EN | LVDS_CH0_EN | LVDS_CH1_EN | LVDS_PWRDN; + val |= val << 16; + ret = regmap_write(lvds->grf, + lvds->soc_data->grf_soc_con7, val); + if (ret != 0) + DRM_DEV_ERROR(lvds->dev, "Could not write to GRF: %d\n", ret); + + pm_runtime_put(lvds->dev); + clk_disable(lvds->pclk); +} + +static enum drm_connector_status +rockchip_lvds_connector_detect(struct drm_connector *connector, bool force) +{ + return connector_status_connected; +} + +static void rockchip_lvds_connector_destroy(struct drm_connector *connector) +{ + drm_connector_cleanup(connector); +} + +static const struct drm_connector_funcs rockchip_lvds_connector_funcs = { + .dpms = drm_atomic_helper_connector_dpms, + .detect = rockchip_lvds_connector_detect, + .fill_modes = drm_helper_probe_single_connector_modes, + .destroy = rockchip_lvds_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 rockchip_lvds_connector_get_modes(struct drm_connector *connector) +{ + struct rockchip_lvds *lvds = connector_to_lvds(connector); + struct drm_panel *panel = lvds->panel; + + return panel->funcs->get_modes(panel); +} + +static struct drm_encoder * +rockchip_lvds_connector_best_encoder(struct drm_connector *connector) +{ + struct rockchip_lvds *lvds = connector_to_lvds(connector); + + return &lvds->encoder; +} + +static enum drm_mode_status rockchip_lvds_connector_mode_valid( + struct drm_connector *connector, + struct drm_display_mode *mode) +{ + return MODE_OK; +} + +static const +struct drm_connector_helper_funcs rockchip_lvds_connector_helper_funcs = { + .get_modes = rockchip_lvds_connector_get_modes, + .mode_valid = rockchip_lvds_connector_mode_valid, + .best_encoder = rockchip_lvds_connector_best_encoder, +}; + +static bool +rockchip_lvds_encoder_mode_fixup(struct drm_encoder *encoder, + const struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + return true; +} + +static void rockchip_lvds_encoder_mode_set(struct drm_encoder *encoder, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted) +{ + struct rockchip_lvds *lvds = encoder_to_lvds(encoder); + + drm_mode_copy(&lvds->mode, adjusted); +} + +static void rockchip_lvds_grf_config(struct drm_encoder *encoder, + struct drm_display_mode *mode) +{ + struct rockchip_lvds *lvds = encoder_to_lvds(encoder); + u8 pin_hsync = (mode->flags & DRM_MODE_FLAG_PHSYNC) ? 1 : 0; + u8 pin_dclk = (mode->flags & DRM_MODE_FLAG_PCSYNC) ? 1 : 0; + u32 val; + int ret; + + /* iomux to LCD data/sync mode */ + if (lvds->output == DISPLAY_OUTPUT_RGB) + if (lvds->pins && !IS_ERR(lvds->pins->default_state)) + pinctrl_select_state(lvds->pins->p, + lvds->pins->default_state); + val = lvds->format | LVDS_CH0_EN; + if (lvds->output == DISPLAY_OUTPUT_RGB) + val |= LVDS_TTL_EN | LVDS_CH1_EN; + else if (lvds->output == DISPLAY_OUTPUT_DUAL_LVDS) + val |= LVDS_DUAL | LVDS_CH1_EN; + + if ((mode->htotal - mode->hsync_start) & 0x01) + val |= LVDS_START_PHASE_RST_1; + + val |= (pin_dclk << 8) | (pin_hsync << 9); + val |= (0xffff << 16); + ret = regmap_write(lvds->grf, lvds->soc_data->grf_soc_con7, val); + if (ret != 0) { + DRM_DEV_ERROR(lvds->dev, "Could not write to GRF: %d\n", ret); + return; + } +} + +static int rockchip_lvds_set_vop_source(struct rockchip_lvds *lvds, + struct drm_encoder *encoder) +{ + u32 val; + int ret; + + if (!lvds->soc_data->has_vop_sel) + return 0; + + ret = drm_of_encoder_active_endpoint_id(lvds->dev->of_node, encoder); + if (ret < 0) + return ret; + + val = RK3288_LVDS_SOC_CON6_SEL_VOP_LIT << 16; + if (ret) + val |= RK3288_LVDS_SOC_CON6_SEL_VOP_LIT; + + ret = regmap_write(lvds->grf, lvds->soc_data->grf_soc_con6, val); + if (ret < 0) + return ret; + + return 0; +} + +static int +rockchip_lvds_encoder_atomic_check(struct drm_encoder *encoder, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state); + + s->output_mode = ROCKCHIP_OUT_MODE_P888; + s->output_type = DRM_MODE_CONNECTOR_LVDS; + + return 0; +} + +static void rockchip_lvds_encoder_enable(struct drm_encoder *encoder) +{ + struct rockchip_lvds *lvds = encoder_to_lvds(encoder); + int ret; + + drm_panel_prepare(lvds->panel); + ret = rockchip_lvds_poweron(lvds); + if (ret < 0) { + DRM_DEV_ERROR(lvds->dev, "failed to power on lvds: %d\n", ret); + drm_panel_unprepare(lvds->panel); + } + rockchip_lvds_grf_config(encoder, &lvds->mode); + rockchip_lvds_set_vop_source(lvds, encoder); + drm_panel_enable(lvds->panel); +} + +static void rockchip_lvds_encoder_disable(struct drm_encoder *encoder) +{ + struct rockchip_lvds *lvds = encoder_to_lvds(encoder); + + drm_panel_disable(lvds->panel); + rockchip_lvds_poweroff(lvds); + drm_panel_unprepare(lvds->panel); +} + +static const +struct drm_encoder_helper_funcs rockchip_lvds_encoder_helper_funcs = { + .mode_fixup = rockchip_lvds_encoder_mode_fixup, + .mode_set = rockchip_lvds_encoder_mode_set, + .enable = rockchip_lvds_encoder_enable, + .disable = rockchip_lvds_encoder_disable, + .atomic_check = rockchip_lvds_encoder_atomic_check, +}; + +static void rockchip_lvds_encoder_destroy(struct drm_encoder *encoder) +{ + drm_encoder_cleanup(encoder); +} + +static const struct drm_encoder_funcs rockchip_lvds_encoder_funcs = { + .destroy = rockchip_lvds_encoder_destroy, +}; + +static const struct rockchip_lvds_soc_data rk3288_lvds_data = { + .ch1_offset = 0x100, + .grf_soc_con6 = 0x025c, + .grf_soc_con7 = 0x0260, + .has_vop_sel = true, +}; + +static const struct of_device_id rockchip_lvds_dt_ids[] = { + { + .compatible = "rockchip,rk3288-lvds", + .data = &rk3288_lvds_data + }, + {} +}; +MODULE_DEVICE_TABLE(of, rockchip_lvds_dt_ids); + +static int rockchip_lvds_bind(struct device *dev, struct device *master, + void *data) +{ + struct rockchip_lvds *lvds = dev_get_drvdata(dev); + struct drm_device *drm_dev = data; + struct drm_encoder *encoder; + struct drm_connector *connector; + struct device_node *remote = NULL; + struct device_node *port, *endpoint; + int ret, width; + const char *name; + u32 endpoint_id; + + lvds->drm_dev = drm_dev; + port = of_graph_get_port_by_id(dev->of_node, 1); + if (!port) { + DRM_DEV_ERROR(dev, + "can't found port point, please init lvds panel port!\n"); + return -EINVAL; + } + for_each_child_of_node(port, endpoint) { + of_property_read_u32(endpoint, "reg", &endpoint_id); + ret = drm_of_find_panel_or_bridge(dev->of_node, 1, endpoint_id, + &lvds->panel, &lvds->bridge); + if (!ret) + break; + } + if (ret) { + DRM_DEV_ERROR(dev, "failed to find panel and bridge node\n"); + ret = -EPROBE_DEFER; + goto err_put_port; + } + if (lvds->panel) + remote = lvds->panel->dev->of_node; + else + remote = lvds->bridge->of_node; + if (of_property_read_string(remote, "rockchip,output", &name)) + /* default set it as output rgb */ + lvds->output = DISPLAY_OUTPUT_RGB; + else + lvds->output = lvds_name_to_output(name); + + if (lvds->output < 0) { + DRM_DEV_ERROR(dev, "invalid output type [%s]\n", name); + ret = lvds->output; + goto err_put_remote; + } + + if (of_property_read_string(remote, "rockchip,data-mapping", + &name)) + /* default set it as format jeida */ + lvds->format = LVDS_FORMAT_JEIDA; + else + lvds->format = lvds_name_to_format(name); + + if (lvds->format < 0) { + DRM_DEV_ERROR(dev, "invalid data-mapping format [%s]\n", name); + ret = lvds->format; + goto err_put_remote; + } + + if (of_property_read_u32(remote, "rockchip,data-width", &width)) { + lvds->format |= LVDS_24BIT; + } else { + if (width == 24) { + lvds->format |= LVDS_24BIT; + } else if (width == 18) { + lvds->format |= LVDS_18BIT; + } else { + DRM_DEV_ERROR(dev, "unsupport data-width [%d]\n", width); + ret = -EINVAL; + goto err_put_remote; + } + } + + encoder = &lvds->encoder; + encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev, + dev->of_node); + + ret = drm_encoder_init(drm_dev, encoder, &rockchip_lvds_encoder_funcs, + DRM_MODE_ENCODER_LVDS, NULL); + if (ret < 0) { + DRM_DEV_ERROR(drm_dev->dev, + "failed to initialize encoder: %d\n", ret); + goto err_put_remote; + } + + drm_encoder_helper_add(encoder, &rockchip_lvds_encoder_helper_funcs); + + if (lvds->panel) { + connector = &lvds->connector; + connector->dpms = DRM_MODE_DPMS_OFF; + ret = drm_connector_init(drm_dev, connector, + &rockchip_lvds_connector_funcs, + DRM_MODE_CONNECTOR_LVDS); + if (ret < 0) { + DRM_DEV_ERROR(drm_dev->dev, + "failed to initialize connector: %d\n", ret); + goto err_free_encoder; + } + + drm_connector_helper_add(connector, + &rockchip_lvds_connector_helper_funcs); + + ret = drm_mode_connector_attach_encoder(connector, encoder); + if (ret < 0) { + DRM_DEV_ERROR(drm_dev->dev, + "failed to attach encoder: %d\n", ret); + goto err_free_connector; + } + + ret = drm_panel_attach(lvds->panel, connector); + if (ret < 0) { + DRM_DEV_ERROR(drm_dev->dev, + "failed to attach panel: %d\n", ret); + goto err_free_connector; + } + } else { + lvds->bridge->encoder = encoder; + ret = drm_bridge_attach(encoder, lvds->bridge, NULL); + if (ret) { + DRM_DEV_ERROR(drm_dev->dev, + "failed to attach bridge: %d\n", ret); + goto err_free_encoder; + } + encoder->bridge = lvds->bridge; + } + + pm_runtime_enable(dev); + of_node_put(remote); + of_node_put(port); + + return 0; + +err_free_connector: + drm_connector_cleanup(connector); +err_free_encoder: + drm_encoder_cleanup(encoder); +err_put_remote: + of_node_put(remote); +err_put_port: + of_node_put(port); + + return ret; +} + +static void rockchip_lvds_unbind(struct device *dev, struct device *master, + void *data) +{ + struct rockchip_lvds *lvds = dev_get_drvdata(dev); + + rockchip_lvds_encoder_disable(&lvds->encoder); + if (lvds->panel) + drm_panel_detach(lvds->panel); + if (lvds->bridge) + drm_bridge_detach(lvds->bridge); + pm_runtime_disable(dev); + drm_connector_cleanup(&lvds->connector); + drm_encoder_cleanup(&lvds->encoder); +} + +static const struct component_ops rockchip_lvds_component_ops = { + .bind = rockchip_lvds_bind, + .unbind = rockchip_lvds_unbind, +}; + +static int rockchip_lvds_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct rockchip_lvds *lvds; + const struct of_device_id *match; + struct resource *res; + int ret; + + if (!dev->of_node) + return -ENODEV; + + lvds = devm_kzalloc(&pdev->dev, sizeof(*lvds), GFP_KERNEL); + if (!lvds) + return -ENOMEM; + + lvds->dev = dev; + match = of_match_node(rockchip_lvds_dt_ids, dev->of_node); + if (!match) + return -ENODEV; + lvds->soc_data = match->data; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + lvds->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(lvds->regs)) + return PTR_ERR(lvds->regs); + + lvds->pclk = devm_clk_get(&pdev->dev, "pclk_lvds"); + if (IS_ERR(lvds->pclk)) { + DRM_DEV_ERROR(dev, "could not get pclk_lvds\n"); + return PTR_ERR(lvds->pclk); + } + + lvds->pins = devm_kzalloc(lvds->dev, sizeof(*lvds->pins), + GFP_KERNEL); + if (!lvds->pins) + return -ENOMEM; + + lvds->pins->p = devm_pinctrl_get(lvds->dev); + if (IS_ERR(lvds->pins->p)) { + DRM_DEV_ERROR(dev, "no pinctrl handle\n"); + devm_kfree(lvds->dev, lvds->pins); + lvds->pins = NULL; + } else { + lvds->pins->default_state = + pinctrl_lookup_state(lvds->pins->p, "lcdc"); + if (IS_ERR(lvds->pins->default_state)) { + DRM_DEV_ERROR(dev, "no default pinctrl state\n"); + devm_kfree(lvds->dev, lvds->pins); + lvds->pins = NULL; + } + } + + lvds->grf = syscon_regmap_lookup_by_phandle(dev->of_node, + "rockchip,grf"); + if (IS_ERR(lvds->grf)) { + DRM_DEV_ERROR(dev, "missing rockchip,grf property\n"); + return PTR_ERR(lvds->grf); + } + + dev_set_drvdata(dev, lvds); + + ret = clk_prepare(lvds->pclk); + if (ret < 0) { + DRM_DEV_ERROR(dev, "failed to prepare pclk_lvds\n"); + return ret; + } + ret = component_add(&pdev->dev, &rockchip_lvds_component_ops); + if (ret < 0) { + DRM_DEV_ERROR(dev, "failed to add component\n"); + clk_unprepare(lvds->pclk); + } + + return ret; +} + +static int rockchip_lvds_remove(struct platform_device *pdev) +{ + struct rockchip_lvds *lvds = dev_get_drvdata(&pdev->dev); + + component_del(&pdev->dev, &rockchip_lvds_component_ops); + clk_unprepare(lvds->pclk); + + return 0; +} + +struct platform_driver rockchip_lvds_driver = { + .probe = rockchip_lvds_probe, + .remove = rockchip_lvds_remove, + .driver = { + .name = "rockchip-lvds", + .of_match_table = of_match_ptr(rockchip_lvds_dt_ids), + }, +}; diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.h b/drivers/gpu/drm/rockchip/rockchip_lvds.h new file mode 100644 index 0000000..d74ab8d --- /dev/null +++ b/drivers/gpu/drm/rockchip/rockchip_lvds.h @@ -0,0 +1,109 @@ +/* + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd + * Author: + * hjc + * mark yao + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _ROCKCHIP_LVDS_ +#define _ROCKCHIP_LVDS_ + +#define RK3288_LVDS_CH0_REG0 0x00 +#define RK3288_LVDS_CH0_REG0_LVDS_EN BIT(7) +#define RK3288_LVDS_CH0_REG0_TTL_EN BIT(6) +#define RK3288_LVDS_CH0_REG0_LANECK_EN BIT(5) +#define RK3288_LVDS_CH0_REG0_LANE4_EN BIT(4) +#define RK3288_LVDS_CH0_REG0_LANE3_EN BIT(3) +#define RK3288_LVDS_CH0_REG0_LANE2_EN BIT(2) +#define RK3288_LVDS_CH0_REG0_LANE1_EN BIT(1) +#define RK3288_LVDS_CH0_REG0_LANE0_EN BIT(0) + +#define RK3288_LVDS_CH0_REG1 0x04 +#define RK3288_LVDS_CH0_REG1_LANECK_BIAS BIT(5) +#define RK3288_LVDS_CH0_REG1_LANE4_BIAS BIT(4) +#define RK3288_LVDS_CH0_REG1_LANE3_BIAS BIT(3) +#define RK3288_LVDS_CH0_REG1_LANE2_BIAS BIT(2) +#define RK3288_LVDS_CH0_REG1_LANE1_BIAS BIT(1) +#define RK3288_LVDS_CH0_REG1_LANE0_BIAS BIT(0) + +#define RK3288_LVDS_CH0_REG2 0x08 +#define RK3288_LVDS_CH0_REG2_RESERVE_ON BIT(7) +#define RK3288_LVDS_CH0_REG2_LANECK_LVDS_MODE BIT(6) +#define RK3288_LVDS_CH0_REG2_LANE4_LVDS_MODE BIT(5) +#define RK3288_LVDS_CH0_REG2_LANE3_LVDS_MODE BIT(4) +#define RK3288_LVDS_CH0_REG2_LANE2_LVDS_MODE BIT(3) +#define RK3288_LVDS_CH0_REG2_LANE1_LVDS_MODE BIT(2) +#define RK3288_LVDS_CH0_REG2_LANE0_LVDS_MODE BIT(1) +#define RK3288_LVDS_CH0_REG2_PLL_FBDIV8 BIT(0) + +#define RK3288_LVDS_CH0_REG3 0x0c +#define RK3288_LVDS_CH0_REG3_PLL_FBDIV_MASK 0xff + +#define RK3288_LVDS_CH0_REG4 0x10 +#define RK3288_LVDS_CH0_REG4_LANECK_TTL_MODE BIT(5) +#define RK3288_LVDS_CH0_REG4_LANE4_TTL_MODE BIT(4) +#define RK3288_LVDS_CH0_REG4_LANE3_TTL_MODE BIT(3) +#define RK3288_LVDS_CH0_REG4_LANE2_TTL_MODE BIT(2) +#define RK3288_LVDS_CH0_REG4_LANE1_TTL_MODE BIT(1) +#define RK3288_LVDS_CH0_REG4_LANE0_TTL_MODE BIT(0) + +#define RK3288_LVDS_CH0_REG5 0x14 +#define RK3288_LVDS_CH0_REG5_LANECK_TTL_DATA BIT(5) +#define RK3288_LVDS_CH0_REG5_LANE4_TTL_DATA BIT(4) +#define RK3288_LVDS_CH0_REG5_LANE3_TTL_DATA BIT(3) +#define RK3288_LVDS_CH0_REG5_LANE2_TTL_DATA BIT(2) +#define RK3288_LVDS_CH0_REG5_LANE1_TTL_DATA BIT(1) +#define RK3288_LVDS_CH0_REG5_LANE0_TTL_DATA BIT(0) + +#define RK3288_LVDS_CFG_REGC 0x30 +#define RK3288_LVDS_CFG_REGC_PLL_ENABLE 0x00 +#define RK3288_LVDS_CFG_REGC_PLL_DISABLE 0xff + +#define RK3288_LVDS_CH0_REGD 0x34 +#define RK3288_LVDS_CH0_REGD_PLL_PREDIV_MASK 0x1f + +#define RK3288_LVDS_CH0_REG20 0x80 +#define RK3288_LVDS_CH0_REG20_MSB 0x45 +#define RK3288_LVDS_CH0_REG20_LSB 0x44 + +#define RK3288_LVDS_CFG_REG21 0x84 +#define RK3288_LVDS_CFG_REG21_TX_ENABLE 0x92 +#define RK3288_LVDS_CFG_REG21_TX_DISABLE 0x00 +#define RK3288_LVDS_CH1_OFFSET 0x100 + +/* fbdiv value is split over 2 registers, with bit8 in reg2 */ +#define RK3288_LVDS_PLL_FBDIV_REG2(_fbd) \ + (_fbd & BIT(8) ? RK3288_LVDS_CH0_REG2_PLL_FBDIV8 : 0) +#define RK3288_LVDS_PLL_FBDIV_REG3(_fbd) \ + (_fbd & RK3288_LVDS_CH0_REG3_PLL_FBDIV_MASK) +#define RK3288_LVDS_PLL_PREDIV_REGD(_pd) \ + (_pd & RK3288_LVDS_CH0_REGD_PLL_PREDIV_MASK) + +#define RK3288_LVDS_SOC_CON6_SEL_VOP_LIT BIT(3) + +#define LVDS_FMT_MASK (0x07 << 16) +#define LVDS_MSB BIT(3) +#define LVDS_DUAL BIT(4) +#define LVDS_FMT_1 BIT(5) +#define LVDS_TTL_EN BIT(6) +#define LVDS_START_PHASE_RST_1 BIT(7) +#define LVDS_DCLK_INV BIT(8) +#define LVDS_CH0_EN BIT(11) +#define LVDS_CH1_EN BIT(12) +#define LVDS_PWRDN BIT(15) + +#define LVDS_24BIT (0 << 1) +#define LVDS_18BIT (1 << 1) +#define LVDS_FORMAT_VESA (0 << 0) +#define LVDS_FORMAT_JEIDA (1 << 0) + +#endif /* _ROCKCHIP_LVDS_ */