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drm/rockchip: Add support for Rockchip Soc LVDS
This adds support for Rockchip soc lvds found on rk3288 Change-Id: Iaab32c8c02fb17bf55db97a7952a346ce45c7d09 Signed-off-by: Mark Yao <yzq@rock-chips.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Yakir Yang <ykk@rock-chips.com>
This commit is contained in:
Mark Yao
@@ -61,3 +61,12 @@ config ROCKCHIP_INNO_HDMI
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This selects support for Rockchip SoC specific extensions
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for the Innosilicon HDMI driver. If you want to enable
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HDMI on RK3036 based SoC, you should select this option.
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config ROCKCHIP_LVDS
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tristate "Rockchip LVDS support"
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depends on DRM_ROCKCHIP
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help
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Choose this option to enable support for Rockchip LVDS controllers.
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Rockchip rk3288 SoC has LVDS TX Controller can be used, and it
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support LVDS, rgb, dual LVDS output mode. say Y to enable its
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driver.
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@@ -11,5 +11,6 @@ obj-$(CONFIG_ROCKCHIP_DW_HDMI) += dw_hdmi-rockchip.o
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obj-$(CONFIG_ROCKCHIP_DW_MIPI_DSI) += dw-mipi-dsi.o
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obj-$(CONFIG_ROCKCHIP_ANALOGIX_DP) += analogix_dp-rockchip.o
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obj-$(CONFIG_ROCKCHIP_INNO_HDMI) += inno_hdmi.o
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obj-$(CONFIG_ROCKCHIP_LVDS) += rockchip_lvds.o
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obj-$(CONFIG_DRM_ROCKCHIP) += rockchip_vop_reg.o rockchipdrm.o
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642
drivers/gpu/drm/rockchip/rockchip_lvds.c
Normal file
642
drivers/gpu/drm/rockchip/rockchip_lvds.c
Normal file
@@ -0,0 +1,642 @@
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/*
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* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
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* Author:
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* Mark Yao <mark.yao@rock-chips.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <drm/drmP.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_dp_helper.h>
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#include <drm/drm_panel.h>
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#include <drm/drm_of.h>
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#include <linux/component.h>
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#include <linux/clk.h>
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#include <linux/mfd/syscon.h>
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#include <linux/of_graph.h>
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#include <linux/pm_runtime.h>
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#include <linux/regmap.h>
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#include <linux/reset.h>
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#include <video/display_timing.h>
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#include "rockchip_drm_drv.h"
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#include "rockchip_drm_vop.h"
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#include "rockchip_lvds.h"
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#define DISPLAY_OUTPUT_RGB 0
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#define DISPLAY_OUTPUT_LVDS 1
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#define DISPLAY_OUTPUT_DUAL_LVDS 2
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#define connector_to_lvds(c) \
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container_of(c, struct rockchip_lvds, connector)
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#define encoder_to_lvds(c) \
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container_of(c, struct rockchip_lvds, encoder)
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/*
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* @grf_offset: offset inside the grf regmap for setting the rockchip lvds
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*/
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struct rockchip_lvds_soc_data {
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int grf_soc_con6;
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int grf_soc_con7;
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};
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struct rockchip_lvds {
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void *base;
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struct device *dev;
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void __iomem *regs;
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struct regmap *grf;
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struct clk *pclk;
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const struct rockchip_lvds_soc_data *soc_data;
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int output;
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int format;
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struct drm_device *drm_dev;
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struct drm_panel *panel;
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struct drm_connector connector;
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struct drm_encoder encoder;
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struct mutex suspend_lock;
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int suspend;
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};
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static inline void lvds_writel(struct rockchip_lvds *lvds, u32 offset, u32 val)
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{
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writel_relaxed(val, lvds->regs + offset);
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writel_relaxed(val, lvds->regs + offset + 0x100);
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}
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static inline int lvds_name_to_format(const char *s)
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{
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if (!s)
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return -EINVAL;
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if (strncmp(s, "jeida", 6) == 0)
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return LVDS_FORMAT_JEIDA;
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else if (strncmp(s, "vesa", 6) == 0)
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return LVDS_FORMAT_VESA;
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return -EINVAL;
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}
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static inline int lvds_name_to_output(const char *s)
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{
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if (!s)
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return -EINVAL;
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if (strncmp(s, "rgb", 3) == 0)
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return DISPLAY_OUTPUT_RGB;
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else if (strncmp(s, "lvds", 4) == 0)
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return DISPLAY_OUTPUT_LVDS;
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else if (strncmp(s, "duallvds", 8) == 0)
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return DISPLAY_OUTPUT_DUAL_LVDS;
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return -EINVAL;
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}
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static int rockchip_lvds_poweron(struct rockchip_lvds *lvds)
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{
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int ret;
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ret = clk_enable(lvds->pclk);
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if (ret < 0) {
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dev_err(lvds->dev, "failed to enable lvds pclk %d\n", ret);
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return ret;
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}
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ret = pm_runtime_get_sync(lvds->dev);
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if (ret < 0) {
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dev_err(lvds->dev, "failed to get pm runtime: %d\n", ret);
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return ret;
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}
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if (lvds->output == DISPLAY_OUTPUT_RGB) {
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lvds_writel(lvds, RK3288_LVDS_CH0_REG0,
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RK3288_LVDS_CH0_REG0_TTL_EN |
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RK3288_LVDS_CH0_REG0_LANECK_EN |
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RK3288_LVDS_CH0_REG0_LANE4_EN |
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RK3288_LVDS_CH0_REG0_LANE3_EN |
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RK3288_LVDS_CH0_REG0_LANE2_EN |
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RK3288_LVDS_CH0_REG0_LANE1_EN |
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RK3288_LVDS_CH0_REG0_LANE0_EN);
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lvds_writel(lvds, RK3288_LVDS_CH0_REG2,
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RK3288_LVDS_PLL_FBDIV_REG2(0x46));
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lvds_writel(lvds, RK3288_LVDS_CH0_REG3,
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RK3288_LVDS_PLL_FBDIV_REG3(0x46));
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lvds_writel(lvds, RK3288_LVDS_CH0_REG4,
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RK3288_LVDS_CH0_REG4_LANECK_TTL_MODE |
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RK3288_LVDS_CH0_REG4_LANE4_TTL_MODE |
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RK3288_LVDS_CH0_REG4_LANE3_TTL_MODE |
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RK3288_LVDS_CH0_REG4_LANE2_TTL_MODE |
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RK3288_LVDS_CH0_REG4_LANE1_TTL_MODE |
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RK3288_LVDS_CH0_REG4_LANE0_TTL_MODE);
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lvds_writel(lvds, RK3288_LVDS_CH0_REG5,
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RK3288_LVDS_CH0_REG5_LANECK_TTL_DATA |
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RK3288_LVDS_CH0_REG5_LANE4_TTL_DATA |
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RK3288_LVDS_CH0_REG5_LANE3_TTL_DATA |
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RK3288_LVDS_CH0_REG5_LANE2_TTL_DATA |
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RK3288_LVDS_CH0_REG5_LANE1_TTL_DATA |
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RK3288_LVDS_CH0_REG5_LANE0_TTL_DATA);
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lvds_writel(lvds, RK3288_LVDS_CH0_REGD,
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RK3288_LVDS_PLL_PREDIV_REGD(0x0a));
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lvds_writel(lvds, RK3288_LVDS_CH0_REG20,
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RK3288_LVDS_CH0_REG20_LSB);
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} else {
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lvds_writel(lvds, RK3288_LVDS_CH0_REG0,
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RK3288_LVDS_CH0_REG0_LVDS_EN |
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RK3288_LVDS_CH0_REG0_LANECK_EN |
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RK3288_LVDS_CH0_REG0_LANE4_EN |
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RK3288_LVDS_CH0_REG0_LANE3_EN |
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RK3288_LVDS_CH0_REG0_LANE2_EN |
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RK3288_LVDS_CH0_REG0_LANE1_EN |
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RK3288_LVDS_CH0_REG0_LANE0_EN);
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lvds_writel(lvds, RK3288_LVDS_CH0_REG1,
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RK3288_LVDS_CH0_REG1_LANECK_BIAS |
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RK3288_LVDS_CH0_REG1_LANE4_BIAS |
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RK3288_LVDS_CH0_REG1_LANE3_BIAS |
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RK3288_LVDS_CH0_REG1_LANE2_BIAS |
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RK3288_LVDS_CH0_REG1_LANE1_BIAS |
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RK3288_LVDS_CH0_REG1_LANE0_BIAS);
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lvds_writel(lvds, RK3288_LVDS_CH0_REG2,
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RK3288_LVDS_CH0_REG2_RESERVE_ON |
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RK3288_LVDS_CH0_REG2_LANECK_LVDS_MODE |
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RK3288_LVDS_CH0_REG2_LANE4_LVDS_MODE |
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RK3288_LVDS_CH0_REG2_LANE3_LVDS_MODE |
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RK3288_LVDS_CH0_REG2_LANE2_LVDS_MODE |
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RK3288_LVDS_CH0_REG2_LANE1_LVDS_MODE |
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RK3288_LVDS_CH0_REG2_LANE0_LVDS_MODE |
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RK3288_LVDS_PLL_FBDIV_REG2(0x46));
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lvds_writel(lvds, RK3288_LVDS_CH0_REG3,
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RK3288_LVDS_PLL_FBDIV_REG3(0x46));
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lvds_writel(lvds, RK3288_LVDS_CH0_REG4, 0x00);
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lvds_writel(lvds, RK3288_LVDS_CH0_REG5, 0x00);
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lvds_writel(lvds, RK3288_LVDS_CH0_REGD,
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RK3288_LVDS_PLL_PREDIV_REGD(0x0a));
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lvds_writel(lvds, RK3288_LVDS_CH0_REG20,
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RK3288_LVDS_CH0_REG20_LSB);
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}
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writel(RK3288_LVDS_CFG_REGC_PLL_ENABLE,
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lvds->regs + RK3288_LVDS_CFG_REGC);
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writel(RK3288_LVDS_CFG_REG21_TX_ENABLE,
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lvds->regs + RK3288_LVDS_CFG_REG21);
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return 0;
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}
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static void rockchip_lvds_poweroff(struct rockchip_lvds *lvds)
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{
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int ret;
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ret = regmap_write(lvds->grf,
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lvds->soc_data->grf_soc_con7, 0xffff8000);
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if (ret != 0)
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dev_err(lvds->dev, "Could not write to GRF: %d\n", ret);
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writel(RK3288_LVDS_CFG_REG21_TX_DISABLE,
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lvds->regs + RK3288_LVDS_CFG_REG21);
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writel(RK3288_LVDS_CFG_REGC_PLL_DISABLE,
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lvds->regs + RK3288_LVDS_CFG_REGC);
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pm_runtime_put(lvds->dev);
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clk_disable(lvds->pclk);
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}
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static enum drm_connector_status
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rockchip_lvds_connector_detect(struct drm_connector *connector, bool force)
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{
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return connector_status_connected;
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}
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static void rockchip_lvds_connector_destroy(struct drm_connector *connector)
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{
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drm_connector_cleanup(connector);
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}
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static struct drm_connector_funcs rockchip_lvds_connector_funcs = {
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.dpms = drm_atomic_helper_connector_dpms,
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.detect = rockchip_lvds_connector_detect,
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.fill_modes = drm_helper_probe_single_connector_modes,
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.destroy = rockchip_lvds_connector_destroy,
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.reset = drm_atomic_helper_connector_reset,
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.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
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};
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static int rockchip_lvds_connector_get_modes(struct drm_connector *connector)
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{
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struct rockchip_lvds *lvds = connector_to_lvds(connector);
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struct drm_panel *panel = lvds->panel;
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return panel->funcs->get_modes(panel);
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}
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static struct drm_encoder *
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rockchip_lvds_connector_best_encoder(struct drm_connector *connector)
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{
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struct rockchip_lvds *lvds = connector_to_lvds(connector);
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return &lvds->encoder;
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}
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static enum drm_mode_status rockchip_lvds_connector_mode_valid(
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struct drm_connector *connector,
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struct drm_display_mode *mode)
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{
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return MODE_OK;
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}
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static
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struct drm_connector_helper_funcs rockchip_lvds_connector_helper_funcs = {
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.get_modes = rockchip_lvds_connector_get_modes,
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.mode_valid = rockchip_lvds_connector_mode_valid,
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.best_encoder = rockchip_lvds_connector_best_encoder,
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};
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static void rockchip_lvds_encoder_dpms(struct drm_encoder *encoder, int mode)
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{
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struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
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int ret;
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mutex_lock(&lvds->suspend_lock);
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switch (mode) {
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case DRM_MODE_DPMS_ON:
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if (!lvds->suspend)
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goto out;
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drm_panel_prepare(lvds->panel);
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ret = rockchip_lvds_poweron(lvds);
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if (ret < 0) {
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drm_panel_unprepare(lvds->panel);
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goto out;
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}
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drm_panel_enable(lvds->panel);
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lvds->suspend = false;
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break;
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case DRM_MODE_DPMS_STANDBY:
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case DRM_MODE_DPMS_SUSPEND:
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case DRM_MODE_DPMS_OFF:
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if (lvds->suspend)
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goto out;
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drm_panel_disable(lvds->panel);
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rockchip_lvds_poweroff(lvds);
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drm_panel_unprepare(lvds->panel);
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lvds->suspend = true;
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break;
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default:
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break;
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}
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out:
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mutex_unlock(&lvds->suspend_lock);
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}
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static bool
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rockchip_lvds_encoder_mode_fixup(struct drm_encoder *encoder,
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const struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode)
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{
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return true;
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}
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static void rockchip_lvds_encoder_mode_set(struct drm_encoder *encoder,
|
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struct drm_display_mode *mode,
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struct drm_display_mode *adjusted)
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{
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struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
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u32 h_bp = mode->htotal - mode->hsync_start;
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u8 pin_hsync = (mode->flags & DRM_MODE_FLAG_PHSYNC) ? 1 : 0;
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u8 pin_dclk = (mode->flags & DRM_MODE_FLAG_PCSYNC) ? 1 : 0;
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u32 val;
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int ret;
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val = lvds->format;
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if (lvds->output == DISPLAY_OUTPUT_DUAL_LVDS)
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val |= LVDS_DUAL | LVDS_CH0_EN | LVDS_CH1_EN;
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else if (lvds->output == DISPLAY_OUTPUT_LVDS)
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val |= LVDS_CH0_EN;
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else if (lvds->output == DISPLAY_OUTPUT_RGB)
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val |= LVDS_TTL_EN | LVDS_CH0_EN | LVDS_CH1_EN;
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|
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if (h_bp & 0x01)
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val |= LVDS_START_PHASE_RST_1;
|
||||
|
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val |= (pin_dclk << 8) | (pin_hsync << 9);
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val |= (0xffff << 16);
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ret = regmap_write(lvds->grf, lvds->soc_data->grf_soc_con7, val);
|
||||
if (ret != 0) {
|
||||
dev_err(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;
|
||||
|
||||
ret = drm_of_encoder_active_endpoint_id(lvds->dev->of_node, encoder);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
if (ret)
|
||||
val = RK3288_LVDS_SOC_CON6_SEL_VOP_LIT |
|
||||
(RK3288_LVDS_SOC_CON6_SEL_VOP_LIT << 16);
|
||||
else
|
||||
val = RK3288_LVDS_SOC_CON6_SEL_VOP_LIT << 16;
|
||||
|
||||
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_commit(struct drm_encoder *encoder)
|
||||
{
|
||||
struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
|
||||
|
||||
rockchip_lvds_encoder_dpms(encoder, DRM_MODE_DPMS_ON);
|
||||
rockchip_lvds_set_vop_source(lvds, encoder);
|
||||
}
|
||||
|
||||
static void rockchip_lvds_encoder_disable(struct drm_encoder *encoder)
|
||||
{
|
||||
rockchip_lvds_encoder_dpms(encoder, DRM_MODE_DPMS_OFF);
|
||||
}
|
||||
|
||||
static struct drm_encoder_helper_funcs rockchip_lvds_encoder_helper_funcs = {
|
||||
.dpms = rockchip_lvds_encoder_dpms,
|
||||
.mode_fixup = rockchip_lvds_encoder_mode_fixup,
|
||||
.mode_set = rockchip_lvds_encoder_mode_set,
|
||||
.commit = rockchip_lvds_encoder_commit,
|
||||
.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 struct drm_encoder_funcs rockchip_lvds_encoder_funcs = {
|
||||
.destroy = rockchip_lvds_encoder_destroy,
|
||||
};
|
||||
|
||||
static struct rockchip_lvds_soc_data rk3288_lvds_data = {
|
||||
.grf_soc_con6 = 0x025c,
|
||||
.grf_soc_con7 = 0x0260,
|
||||
};
|
||||
|
||||
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;
|
||||
int ret;
|
||||
|
||||
lvds->drm_dev = drm_dev;
|
||||
|
||||
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_ERROR("failed to initialize encoder with drm\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
drm_encoder_helper_add(encoder, &rockchip_lvds_encoder_helper_funcs);
|
||||
|
||||
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_ERROR("failed to initialize connector with drm\n");
|
||||
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_ERROR("failed to attach connector and encoder\n");
|
||||
goto err_free_connector;
|
||||
}
|
||||
|
||||
ret = drm_panel_attach(lvds->panel, connector);
|
||||
if (ret < 0) {
|
||||
DRM_ERROR("failed to attach connector and encoder\n");
|
||||
goto err_free_connector;
|
||||
}
|
||||
|
||||
pm_runtime_enable(dev);
|
||||
|
||||
return 0;
|
||||
|
||||
err_free_connector:
|
||||
drm_connector_cleanup(connector);
|
||||
err_free_encoder:
|
||||
drm_encoder_cleanup(encoder);
|
||||
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_dpms(&lvds->encoder, DRM_MODE_DPMS_OFF);
|
||||
|
||||
drm_panel_detach(lvds->panel);
|
||||
|
||||
drm_connector_cleanup(&lvds->connector);
|
||||
drm_encoder_cleanup(&lvds->encoder);
|
||||
|
||||
pm_runtime_disable(dev);
|
||||
}
|
||||
|
||||
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;
|
||||
struct device_node *output_node = NULL;
|
||||
const struct of_device_id *match;
|
||||
struct resource *res;
|
||||
const char *name;
|
||||
int i, ret;
|
||||
|
||||
if (!dev->of_node)
|
||||
return -ENODEV;
|
||||
|
||||
lvds = devm_kzalloc(&pdev->dev, sizeof(*lvds), GFP_KERNEL);
|
||||
if (!lvds)
|
||||
return -ENOMEM;
|
||||
|
||||
lvds->dev = dev;
|
||||
lvds->suspend = true;
|
||||
|
||||
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->grf = syscon_regmap_lookup_by_phandle(dev->of_node,
|
||||
"rockchip,grf");
|
||||
if (IS_ERR(lvds->grf)) {
|
||||
dev_err(dev, "missing rockchip,grf property\n");
|
||||
return PTR_ERR(lvds->grf);
|
||||
}
|
||||
|
||||
lvds->pclk = devm_clk_get(&pdev->dev, "pclk_lvds");
|
||||
if (IS_ERR(lvds->pclk)) {
|
||||
dev_err(dev, "could not get pclk_lvds\n");
|
||||
return PTR_ERR(lvds->pclk);
|
||||
}
|
||||
|
||||
match = of_match_node(rockchip_lvds_dt_ids, dev->of_node);
|
||||
lvds->soc_data = match->data;
|
||||
|
||||
dev_set_drvdata(dev, lvds);
|
||||
mutex_init(&lvds->suspend_lock);
|
||||
|
||||
if (of_property_read_string(dev->of_node, "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) {
|
||||
dev_err(dev, "invalid output type [%s]\n", name);
|
||||
return lvds->output;
|
||||
}
|
||||
|
||||
if (of_property_read_string(dev->of_node, "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) {
|
||||
dev_err(dev, "invalid data-mapping format [%s]\n", name);
|
||||
return lvds->format;
|
||||
}
|
||||
|
||||
if (of_property_read_u32(dev->of_node, "rockchip,data-width", &i)) {
|
||||
lvds->format |= LVDS_24BIT;
|
||||
} else {
|
||||
if (i == 24) {
|
||||
lvds->format |= LVDS_24BIT;
|
||||
} else if (i == 18) {
|
||||
lvds->format |= LVDS_18BIT;
|
||||
} else {
|
||||
dev_err(&pdev->dev,
|
||||
"rockchip-lvds unsupport data-width[%d]\n", i);
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
output_node = of_parse_phandle(dev->of_node, "rockchip,panel", 0);
|
||||
if (!output_node) {
|
||||
DRM_ERROR("failed to find rockchip,panel dt node\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
lvds->panel = of_drm_find_panel(output_node);
|
||||
of_node_put(output_node);
|
||||
if (!lvds->panel) {
|
||||
DRM_ERROR("failed to find panel\n");
|
||||
return -EPROBE_DEFER;
|
||||
}
|
||||
|
||||
ret = clk_prepare(lvds->pclk);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "failed to prepare pclk_lvds\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = component_add(&pdev->dev, &rockchip_lvds_component_ops);
|
||||
if (ret < 0)
|
||||
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),
|
||||
},
|
||||
};
|
||||
module_platform_driver(rockchip_lvds_driver);
|
||||
|
||||
MODULE_AUTHOR("Mark Yao <mark.yao@rock-chips.com>");
|
||||
MODULE_AUTHOR("Heiko Stuebner <heiko@sntech.de>");
|
||||
MODULE_DESCRIPTION("ROCKCHIP LVDS Driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
108
drivers/gpu/drm/rockchip/rockchip_lvds.h
Normal file
108
drivers/gpu/drm/rockchip/rockchip_lvds.h
Normal file
@@ -0,0 +1,108 @@
|
||||
/*
|
||||
* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
|
||||
* Author:
|
||||
* hjc <hjc@rock-chips.com>
|
||||
* mark yao <mark.yao@rock-chips.com>
|
||||
*
|
||||
* 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
|
||||
|
||||
/* 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_ */
|
||||
Reference in New Issue
Block a user