drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c - LeafOS-Devices/android_kernel_samsung_gta4xl - Gitiles

 /*
  * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  */

 #include <linux/clk.h>
 #include <linux/mfd/syscon.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>

 #include <drm/drm_of.h>
 #include <drm/drmP.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_edid.h>
 #include <drm/bridge/dw_hdmi.h>

 #include "rockchip_drm_drv.h"
 #include "rockchip_drm_vop.h"

 #define RK3288_GRF_SOC_CON6		0x025C
 #define RK3288_HDMI_LCDC_SEL		BIT(4)
 #define RK3399_GRF_SOC_CON20		0x6250
 #define RK3399_HDMI_LCDC_SEL		BIT(6)

 #define HIWORD_UPDATE(val, mask)	(val | (mask) << 16)

 /**
  * struct rockchip_hdmi_chip_data - splite the grf setting of kind of chips
  * @lcdsel_grf_reg: grf register offset of lcdc select
  * @lcdsel_big: reg value of selecting vop big for HDMI
  * @lcdsel_lit: reg value of selecting vop little for HDMI
  */
 struct rockchip_hdmi_chip_data {
 	u32	lcdsel_grf_reg;
 	u32	lcdsel_big;
 	u32	lcdsel_lit;
 };

 struct rockchip_hdmi {
 	struct device *dev;
 	struct regmap *regmap;
 	struct drm_encoder encoder;
 	const struct rockchip_hdmi_chip_data *chip_data;
 	struct clk *vpll_clk;
 	struct clk *grf_clk;
 };

 #define to_rockchip_hdmi(x)	container_of(x, struct rockchip_hdmi, x)

 static const struct dw_hdmi_mpll_config rockchip_mpll_cfg[] = {
 	{
 		27000000, {
 			{ 0x00b3, 0x0000},
 			{ 0x2153, 0x0000},
 			{ 0x40f3, 0x0000}
 		},
 	}, {
 		36000000, {
 			{ 0x00b3, 0x0000},
 			{ 0x2153, 0x0000},
 			{ 0x40f3, 0x0000}
 		},
 	}, {
 		40000000, {
 			{ 0x00b3, 0x0000},
 			{ 0x2153, 0x0000},
 			{ 0x40f3, 0x0000}
 		},
 	}, {
 		54000000, {
 			{ 0x0072, 0x0001},
 			{ 0x2142, 0x0001},
 			{ 0x40a2, 0x0001},
 		},
 	}, {
 		65000000, {
 			{ 0x0072, 0x0001},
 			{ 0x2142, 0x0001},
 			{ 0x40a2, 0x0001},
 		},
 	}, {
 		66000000, {
 			{ 0x013e, 0x0003},
 			{ 0x217e, 0x0002},
 			{ 0x4061, 0x0002}
 		},
 	}, {
 		74250000, {
 			{ 0x0072, 0x0001},
 			{ 0x2145, 0x0002},
 			{ 0x4061, 0x0002}
 		},
 	}, {
 		83500000, {
 			{ 0x0072, 0x0001},
 		},
 	}, {
 		108000000, {
 			{ 0x0051, 0x0002},
 			{ 0x2145, 0x0002},
 			{ 0x4061, 0x0002}
 		},
 	}, {
 		106500000, {
 			{ 0x0051, 0x0002},
 			{ 0x2145, 0x0002},
 			{ 0x4061, 0x0002}
 		},
 	}, {
 		146250000, {
 			{ 0x0051, 0x0002},
 			{ 0x2145, 0x0002},
 			{ 0x4061, 0x0002}
 		},
 	}, {
 		148500000, {
 			{ 0x0051, 0x0003},
 			{ 0x214c, 0x0003},
 			{ 0x4064, 0x0003}
 		},
 	}, {
 		~0UL, {
 			{ 0x00a0, 0x000a },
 			{ 0x2001, 0x000f },
 			{ 0x4002, 0x000f },
 		},
 	}
 };

 static const struct dw_hdmi_curr_ctrl rockchip_cur_ctr[] = {
 	/*      pixelclk    bpp8    bpp10   bpp12 */
 	{
 		40000000,  { 0x0018, 0x0018, 0x0018 },
 	}, {
 		65000000,  { 0x0028, 0x0028, 0x0028 },
 	}, {
 		66000000,  { 0x0038, 0x0038, 0x0038 },
 	}, {
 		74250000,  { 0x0028, 0x0038, 0x0038 },
 	}, {
 		83500000,  { 0x0028, 0x0038, 0x0038 },
 	}, {
 		146250000, { 0x0038, 0x0038, 0x0038 },
 	}, {
 		148500000, { 0x0000, 0x0038, 0x0038 },
 	}, {
 		~0UL,      { 0x0000, 0x0000, 0x0000},
 	}
 };

 static const struct dw_hdmi_phy_config rockchip_phy_config[] = {
 	/*pixelclk   symbol   term   vlev*/
 	{ 74250000,  0x8009, 0x0004, 0x0272},
 	{ 148500000, 0x802b, 0x0004, 0x028d},
 	{ 297000000, 0x8039, 0x0005, 0x028d},
 	{ ~0UL,	     0x0000, 0x0000, 0x0000}
 };

 static int rockchip_hdmi_parse_dt(struct rockchip_hdmi *hdmi)
 {
 	struct device_node *np = hdmi->dev->of_node;
 	int ret;

 	hdmi->regmap = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
 	if (IS_ERR(hdmi->regmap)) {
 		dev_err(hdmi->dev, "Unable to get rockchip,grf\n");
 		return PTR_ERR(hdmi->regmap);
 	}

 	hdmi->vpll_clk = devm_clk_get(hdmi->dev, "vpll");
 	if (PTR_ERR(hdmi->vpll_clk) == -ENOENT) {
 		hdmi->vpll_clk = NULL;
 	} else if (PTR_ERR(hdmi->vpll_clk) == -EPROBE_DEFER) {
 		return -EPROBE_DEFER;
 	} else if (IS_ERR(hdmi->vpll_clk)) {
 		dev_err(hdmi->dev, "failed to get grf clock\n");
 		return PTR_ERR(hdmi->vpll_clk);
 	}

 	hdmi->grf_clk = devm_clk_get(hdmi->dev, "grf");
 	if (PTR_ERR(hdmi->grf_clk) == -ENOENT) {
 		hdmi->grf_clk = NULL;
 	} else if (PTR_ERR(hdmi->grf_clk) == -EPROBE_DEFER) {
 		return -EPROBE_DEFER;
 	} else if (IS_ERR(hdmi->grf_clk)) {
 		dev_err(hdmi->dev, "failed to get grf clock\n");
 		return PTR_ERR(hdmi->grf_clk);
 	}

 	ret = clk_prepare_enable(hdmi->vpll_clk);
 	if (ret) {
 		dev_err(hdmi->dev, "Failed to enable HDMI vpll: %d\n", ret);
 		return ret;
 	}

 	return 0;
 }

 static enum drm_mode_status
 dw_hdmi_rockchip_mode_valid(struct drm_connector *connector,
 			    const struct drm_display_mode *mode)
 {
 	const struct dw_hdmi_mpll_config *mpll_cfg = rockchip_mpll_cfg;
 	int pclk = mode->clock * 1000;
 	bool valid = false;
 	int i;

 	for (i = 0; mpll_cfg[i].mpixelclock != (~0UL); i++) {
 		if (pclk == mpll_cfg[i].mpixelclock) {
 			valid = true;
 			break;
 		}
 	}

 	return (valid) ? MODE_OK : MODE_BAD;
 }

 static const struct drm_encoder_funcs dw_hdmi_rockchip_encoder_funcs = {
 	.destroy = drm_encoder_cleanup,
 };

 static void dw_hdmi_rockchip_encoder_disable(struct drm_encoder *encoder)
 {
 }

 static bool
 dw_hdmi_rockchip_encoder_mode_fixup(struct drm_encoder *encoder,
 				    const struct drm_display_mode *mode,
 				    struct drm_display_mode *adj_mode)
 {
 	return true;
 }

 static void dw_hdmi_rockchip_encoder_mode_set(struct drm_encoder *encoder,
 					      struct drm_display_mode *mode,
 					      struct drm_display_mode *adj_mode)
 {
 	struct rockchip_hdmi *hdmi = to_rockchip_hdmi(encoder);

 	clk_set_rate(hdmi->vpll_clk, adj_mode->clock * 1000);
 }

 static void dw_hdmi_rockchip_encoder_enable(struct drm_encoder *encoder)
 {
 	struct rockchip_hdmi *hdmi = to_rockchip_hdmi(encoder);
 	u32 val;
 	int ret;

 	ret = drm_of_encoder_active_endpoint_id(hdmi->dev->of_node, encoder);
 	if (ret)
 		val = hdmi->chip_data->lcdsel_lit;
 	else
 		val = hdmi->chip_data->lcdsel_big;

 	ret = clk_prepare_enable(hdmi->grf_clk);
 	if (ret < 0) {
 		dev_err(hdmi->dev, "failed to enable grfclk %d\n", ret);
 		return;
 	}

 	ret = regmap_write(hdmi->regmap, hdmi->chip_data->lcdsel_grf_reg, val);
 	if (ret != 0)
 		dev_err(hdmi->dev, "Could not write to GRF: %d\n", ret);

 	clk_disable_unprepare(hdmi->grf_clk);
 	dev_dbg(hdmi->dev, "vop %s output to hdmi\n",
 		ret ? "LIT" : "BIG");
 }

 static int
 dw_hdmi_rockchip_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_AAAA;
 	s->output_type = DRM_MODE_CONNECTOR_HDMIA;

 	return 0;
 }

 static const struct drm_encoder_helper_funcs dw_hdmi_rockchip_encoder_helper_funcs = {
 	.mode_fixup = dw_hdmi_rockchip_encoder_mode_fixup,
 	.mode_set   = dw_hdmi_rockchip_encoder_mode_set,
 	.enable     = dw_hdmi_rockchip_encoder_enable,
 	.disable    = dw_hdmi_rockchip_encoder_disable,
 	.atomic_check = dw_hdmi_rockchip_encoder_atomic_check,
 };

 static struct rockchip_hdmi_chip_data rk3288_chip_data = {
 	.lcdsel_grf_reg = RK3288_GRF_SOC_CON6,
 	.lcdsel_big = HIWORD_UPDATE(0, RK3288_HDMI_LCDC_SEL),
 	.lcdsel_lit = HIWORD_UPDATE(RK3288_HDMI_LCDC_SEL, RK3288_HDMI_LCDC_SEL),
 };

 static const struct dw_hdmi_plat_data rk3288_hdmi_drv_data = {
 	.mode_valid = dw_hdmi_rockchip_mode_valid,
 	.mpll_cfg   = rockchip_mpll_cfg,
 	.cur_ctr    = rockchip_cur_ctr,
 	.phy_config = rockchip_phy_config,
 	.phy_data = &rk3288_chip_data,
 };

 static struct rockchip_hdmi_chip_data rk3399_chip_data = {
 	.lcdsel_grf_reg = RK3399_GRF_SOC_CON20,
 	.lcdsel_big = HIWORD_UPDATE(0, RK3399_HDMI_LCDC_SEL),
 	.lcdsel_lit = HIWORD_UPDATE(RK3399_HDMI_LCDC_SEL, RK3399_HDMI_LCDC_SEL),
 };

 static const struct dw_hdmi_plat_data rk3399_hdmi_drv_data = {
 	.mode_valid = dw_hdmi_rockchip_mode_valid,
 	.mpll_cfg   = rockchip_mpll_cfg,
 	.cur_ctr    = rockchip_cur_ctr,
 	.phy_config = rockchip_phy_config,
 	.phy_data = &rk3399_chip_data,
 };

 static const struct of_device_id dw_hdmi_rockchip_dt_ids[] = {
 	{ .compatible = "rockchip,rk3288-dw-hdmi",
 	  .data = &rk3288_hdmi_drv_data
 	},
 	{ .compatible = "rockchip,rk3399-dw-hdmi",
 	  .data = &rk3399_hdmi_drv_data
 	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, dw_hdmi_rockchip_dt_ids);

 static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
 				 void *data)
 {
 	struct platform_device *pdev = to_platform_device(dev);
 	const struct dw_hdmi_plat_data *plat_data;
 	const struct of_device_id *match;
 	struct drm_device *drm = data;
 	struct drm_encoder *encoder;
 	struct rockchip_hdmi *hdmi;
 	int ret;

 	if (!pdev->dev.of_node)
 		return -ENODEV;

 	hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
 	if (!hdmi)
 		return -ENOMEM;

 	match = of_match_node(dw_hdmi_rockchip_dt_ids, pdev->dev.of_node);
 	plat_data = match->data;
 	hdmi->dev = &pdev->dev;
 	hdmi->chip_data = plat_data->phy_data;
 	encoder = &hdmi->encoder;

 	encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
 	/*
 	 * If we failed to find the CRTC(s) which this encoder is
 	 * supposed to be connected to, it's because the CRTC has
 	 * not been registered yet.  Defer probing, and hope that
 	 * the required CRTC is added later.
 	 */
 	if (encoder->possible_crtcs == 0)
 		return -EPROBE_DEFER;

 	ret = rockchip_hdmi_parse_dt(hdmi);
 	if (ret) {
 		dev_err(hdmi->dev, "Unable to parse OF data\n");
 		return ret;
 	}

 	drm_encoder_helper_add(encoder, &dw_hdmi_rockchip_encoder_helper_funcs);
 	drm_encoder_init(drm, encoder, &dw_hdmi_rockchip_encoder_funcs,
 			 DRM_MODE_ENCODER_TMDS, NULL);

 	ret = dw_hdmi_bind(pdev, encoder, plat_data);

 	/*
 	 * If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(),
 	 * which would have called the encoder cleanup.  Do it manually.
 	 */
 	if (ret)
 		drm_encoder_cleanup(encoder);

 	return ret;
 }

 static void dw_hdmi_rockchip_unbind(struct device *dev, struct device *master,
 				    void *data)
 {
 	return dw_hdmi_unbind(dev);
 }

 static const struct component_ops dw_hdmi_rockchip_ops = {
 	.bind	= dw_hdmi_rockchip_bind,
 	.unbind	= dw_hdmi_rockchip_unbind,
 };

 static int dw_hdmi_rockchip_probe(struct platform_device *pdev)
 {
 	return component_add(&pdev->dev, &dw_hdmi_rockchip_ops);
 }

 static int dw_hdmi_rockchip_remove(struct platform_device *pdev)
 {
 	component_del(&pdev->dev, &dw_hdmi_rockchip_ops);

 	return 0;
 }

 struct platform_driver dw_hdmi_rockchip_pltfm_driver = {
 	.probe  = dw_hdmi_rockchip_probe,
 	.remove = dw_hdmi_rockchip_remove,
 	.driver = {
 		.name = "dwhdmi-rockchip",
 		.of_match_table = dw_hdmi_rockchip_dt_ids,
 	},
 };
	/*
	* Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*/

	#include <linux/clk.h>
	#include <linux/mfd/syscon.h>
	#include <linux/module.h>
	#include <linux/platform_device.h>
	#include <linux/regmap.h>

	#include <drm/drm_of.h>
	#include <drm/drmP.h>
	#include <drm/drm_crtc_helper.h>
	#include <drm/drm_edid.h>
	#include <drm/bridge/dw_hdmi.h>

	#include "rockchip_drm_drv.h"
	#include "rockchip_drm_vop.h"

	#define RK3288_GRF_SOC_CON6 0x025C
	#define RK3288_HDMI_LCDC_SEL BIT(4)
	#define RK3399_GRF_SOC_CON20 0x6250
	#define RK3399_HDMI_LCDC_SEL BIT(6)

	#define HIWORD_UPDATE(val, mask) (val \| (mask) << 16)

	/**
	* struct rockchip_hdmi_chip_data - splite the grf setting of kind of chips
	* @lcdsel_grf_reg: grf register offset of lcdc select
	* @lcdsel_big: reg value of selecting vop big for HDMI
	* @lcdsel_lit: reg value of selecting vop little for HDMI
	*/
	struct rockchip_hdmi_chip_data {
	u32 lcdsel_grf_reg;
	u32 lcdsel_big;
	u32 lcdsel_lit;
	};

	struct rockchip_hdmi {
	struct device *dev;
	struct regmap *regmap;
	struct drm_encoder encoder;
	const struct rockchip_hdmi_chip_data *chip_data;
	struct clk *vpll_clk;
	struct clk *grf_clk;
	};

	#define to_rockchip_hdmi(x) container_of(x, struct rockchip_hdmi, x)

	static const struct dw_hdmi_mpll_config rockchip_mpll_cfg[] = {
	{
	27000000, {
	{ 0x00b3, 0x0000},
	{ 0x2153, 0x0000},
	{ 0x40f3, 0x0000}
	},
	}, {
	36000000, {
	{ 0x00b3, 0x0000},
	{ 0x2153, 0x0000},
	{ 0x40f3, 0x0000}
	},
	}, {
	40000000, {
	{ 0x00b3, 0x0000},
	{ 0x2153, 0x0000},
	{ 0x40f3, 0x0000}
	},
	}, {
	54000000, {
	{ 0x0072, 0x0001},
	{ 0x2142, 0x0001},
	{ 0x40a2, 0x0001},
	},
	}, {
	65000000, {
	{ 0x0072, 0x0001},
	{ 0x2142, 0x0001},
	{ 0x40a2, 0x0001},
	},
	}, {
	66000000, {
	{ 0x013e, 0x0003},
	{ 0x217e, 0x0002},
	{ 0x4061, 0x0002}
	},
	}, {
	74250000, {
	{ 0x0072, 0x0001},
	{ 0x2145, 0x0002},
	{ 0x4061, 0x0002}
	},
	}, {
	83500000, {
	{ 0x0072, 0x0001},
	},
	}, {
	108000000, {
	{ 0x0051, 0x0002},
	{ 0x2145, 0x0002},
	{ 0x4061, 0x0002}
	},
	}, {
	106500000, {
	{ 0x0051, 0x0002},
	{ 0x2145, 0x0002},
	{ 0x4061, 0x0002}
	},
	}, {
	146250000, {
	{ 0x0051, 0x0002},
	{ 0x2145, 0x0002},
	{ 0x4061, 0x0002}
	},
	}, {
	148500000, {
	{ 0x0051, 0x0003},
	{ 0x214c, 0x0003},
	{ 0x4064, 0x0003}
	},
	}, {
	~0UL, {
	{ 0x00a0, 0x000a },
	{ 0x2001, 0x000f },
	{ 0x4002, 0x000f },
	},
	}
	};

	static const struct dw_hdmi_curr_ctrl rockchip_cur_ctr[] = {
	/* pixelclk bpp8 bpp10 bpp12 */
	{
	40000000, { 0x0018, 0x0018, 0x0018 },
	}, {
	65000000, { 0x0028, 0x0028, 0x0028 },
	}, {
	66000000, { 0x0038, 0x0038, 0x0038 },
	}, {
	74250000, { 0x0028, 0x0038, 0x0038 },
	}, {
	83500000, { 0x0028, 0x0038, 0x0038 },
	}, {
	146250000, { 0x0038, 0x0038, 0x0038 },
	}, {
	148500000, { 0x0000, 0x0038, 0x0038 },
	}, {
	~0UL, { 0x0000, 0x0000, 0x0000},
	}
	};

	static const struct dw_hdmi_phy_config rockchip_phy_config[] = {
	/pixelclk symbol term vlev/
	{ 74250000, 0x8009, 0x0004, 0x0272},
	{ 148500000, 0x802b, 0x0004, 0x028d},
	{ 297000000, 0x8039, 0x0005, 0x028d},
	{ ~0UL, 0x0000, 0x0000, 0x0000}
	};

	static int rockchip_hdmi_parse_dt(struct rockchip_hdmi *hdmi)
	{
	struct device_node *np = hdmi->dev->of_node;
	int ret;

	hdmi->regmap = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
	if (IS_ERR(hdmi->regmap)) {
	dev_err(hdmi->dev, "Unable to get rockchip,grf\n");
	return PTR_ERR(hdmi->regmap);
	}

	hdmi->vpll_clk = devm_clk_get(hdmi->dev, "vpll");
	if (PTR_ERR(hdmi->vpll_clk) == -ENOENT) {
	hdmi->vpll_clk = NULL;
	} else if (PTR_ERR(hdmi->vpll_clk) == -EPROBE_DEFER) {
	return -EPROBE_DEFER;
	} else if (IS_ERR(hdmi->vpll_clk)) {
	dev_err(hdmi->dev, "failed to get grf clock\n");
	return PTR_ERR(hdmi->vpll_clk);
	}

	hdmi->grf_clk = devm_clk_get(hdmi->dev, "grf");
	if (PTR_ERR(hdmi->grf_clk) == -ENOENT) {
	hdmi->grf_clk = NULL;
	} else if (PTR_ERR(hdmi->grf_clk) == -EPROBE_DEFER) {
	return -EPROBE_DEFER;
	} else if (IS_ERR(hdmi->grf_clk)) {
	dev_err(hdmi->dev, "failed to get grf clock\n");
	return PTR_ERR(hdmi->grf_clk);
	}

	ret = clk_prepare_enable(hdmi->vpll_clk);
	if (ret) {
	dev_err(hdmi->dev, "Failed to enable HDMI vpll: %d\n", ret);
	return ret;
	}

	return 0;
	}

	static enum drm_mode_status
	dw_hdmi_rockchip_mode_valid(struct drm_connector *connector,
	const struct drm_display_mode *mode)
	{
	const struct dw_hdmi_mpll_config *mpll_cfg = rockchip_mpll_cfg;
	int pclk = mode->clock * 1000;
	bool valid = false;
	int i;

	for (i = 0; mpll_cfg[i].mpixelclock != (~0UL); i++) {
	if (pclk == mpll_cfg[i].mpixelclock) {
	valid = true;
	break;
	}
	}

	return (valid) ? MODE_OK : MODE_BAD;
	}

	static const struct drm_encoder_funcs dw_hdmi_rockchip_encoder_funcs = {
	.destroy = drm_encoder_cleanup,
	};

	static void dw_hdmi_rockchip_encoder_disable(struct drm_encoder *encoder)
	{
	}

	static bool
	dw_hdmi_rockchip_encoder_mode_fixup(struct drm_encoder *encoder,
	const struct drm_display_mode *mode,
	struct drm_display_mode *adj_mode)
	{
	return true;
	}

	static void dw_hdmi_rockchip_encoder_mode_set(struct drm_encoder *encoder,
	struct drm_display_mode *mode,
	struct drm_display_mode *adj_mode)
	{
	struct rockchip_hdmi *hdmi = to_rockchip_hdmi(encoder);

	clk_set_rate(hdmi->vpll_clk, adj_mode->clock * 1000);
	}

	static void dw_hdmi_rockchip_encoder_enable(struct drm_encoder *encoder)
	{
	struct rockchip_hdmi *hdmi = to_rockchip_hdmi(encoder);
	u32 val;
	int ret;

	ret = drm_of_encoder_active_endpoint_id(hdmi->dev->of_node, encoder);
	if (ret)
	val = hdmi->chip_data->lcdsel_lit;
	else
	val = hdmi->chip_data->lcdsel_big;

	ret = clk_prepare_enable(hdmi->grf_clk);
	if (ret < 0) {
	dev_err(hdmi->dev, "failed to enable grfclk %d\n", ret);
	return;
	}

	ret = regmap_write(hdmi->regmap, hdmi->chip_data->lcdsel_grf_reg, val);
	if (ret != 0)
	dev_err(hdmi->dev, "Could not write to GRF: %d\n", ret);

	clk_disable_unprepare(hdmi->grf_clk);
	dev_dbg(hdmi->dev, "vop %s output to hdmi\n",
	ret ? "LIT" : "BIG");
	}

	static int
	dw_hdmi_rockchip_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_AAAA;
	s->output_type = DRM_MODE_CONNECTOR_HDMIA;

	return 0;
	}

	static const struct drm_encoder_helper_funcs dw_hdmi_rockchip_encoder_helper_funcs = {
	.mode_fixup = dw_hdmi_rockchip_encoder_mode_fixup,
	.mode_set = dw_hdmi_rockchip_encoder_mode_set,
	.enable = dw_hdmi_rockchip_encoder_enable,
	.disable = dw_hdmi_rockchip_encoder_disable,
	.atomic_check = dw_hdmi_rockchip_encoder_atomic_check,
	};

	static struct rockchip_hdmi_chip_data rk3288_chip_data = {
	.lcdsel_grf_reg = RK3288_GRF_SOC_CON6,
	.lcdsel_big = HIWORD_UPDATE(0, RK3288_HDMI_LCDC_SEL),
	.lcdsel_lit = HIWORD_UPDATE(RK3288_HDMI_LCDC_SEL, RK3288_HDMI_LCDC_SEL),
	};

	static const struct dw_hdmi_plat_data rk3288_hdmi_drv_data = {
	.mode_valid = dw_hdmi_rockchip_mode_valid,
	.mpll_cfg = rockchip_mpll_cfg,
	.cur_ctr = rockchip_cur_ctr,
	.phy_config = rockchip_phy_config,
	.phy_data = &rk3288_chip_data,
	};

	static struct rockchip_hdmi_chip_data rk3399_chip_data = {
	.lcdsel_grf_reg = RK3399_GRF_SOC_CON20,
	.lcdsel_big = HIWORD_UPDATE(0, RK3399_HDMI_LCDC_SEL),
	.lcdsel_lit = HIWORD_UPDATE(RK3399_HDMI_LCDC_SEL, RK3399_HDMI_LCDC_SEL),
	};

	static const struct dw_hdmi_plat_data rk3399_hdmi_drv_data = {
	.mode_valid = dw_hdmi_rockchip_mode_valid,
	.mpll_cfg = rockchip_mpll_cfg,
	.cur_ctr = rockchip_cur_ctr,
	.phy_config = rockchip_phy_config,
	.phy_data = &rk3399_chip_data,
	};

	static const struct of_device_id dw_hdmi_rockchip_dt_ids[] = {
	{ .compatible = "rockchip,rk3288-dw-hdmi",
	.data = &rk3288_hdmi_drv_data
	},
	{ .compatible = "rockchip,rk3399-dw-hdmi",
	.data = &rk3399_hdmi_drv_data
	},
	{},
	};
	MODULE_DEVICE_TABLE(of, dw_hdmi_rockchip_dt_ids);

	static int dw_hdmi_rockchip_bind(struct device dev, struct device master,
	void *data)
	{
	struct platform_device *pdev = to_platform_device(dev);
	const struct dw_hdmi_plat_data *plat_data;
	const struct of_device_id *match;
	struct drm_device *drm = data;
	struct drm_encoder *encoder;
	struct rockchip_hdmi *hdmi;
	int ret;

	if (!pdev->dev.of_node)
	return -ENODEV;

	hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
	if (!hdmi)
	return -ENOMEM;

	match = of_match_node(dw_hdmi_rockchip_dt_ids, pdev->dev.of_node);
	plat_data = match->data;
	hdmi->dev = &pdev->dev;
	hdmi->chip_data = plat_data->phy_data;
	encoder = &hdmi->encoder;

	encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
	/*
	* If we failed to find the CRTC(s) which this encoder is
	* supposed to be connected to, it's because the CRTC has
	* not been registered yet. Defer probing, and hope that
	* the required CRTC is added later.
	*/
	if (encoder->possible_crtcs == 0)
	return -EPROBE_DEFER;

	ret = rockchip_hdmi_parse_dt(hdmi);
	if (ret) {
	dev_err(hdmi->dev, "Unable to parse OF data\n");
	return ret;
	}

	drm_encoder_helper_add(encoder, &dw_hdmi_rockchip_encoder_helper_funcs);
	drm_encoder_init(drm, encoder, &dw_hdmi_rockchip_encoder_funcs,
	DRM_MODE_ENCODER_TMDS, NULL);

	ret = dw_hdmi_bind(pdev, encoder, plat_data);

	/*
	* If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(),
	* which would have called the encoder cleanup. Do it manually.
	*/
	if (ret)
	drm_encoder_cleanup(encoder);

	return ret;
	}

	static void dw_hdmi_rockchip_unbind(struct device dev, struct device master,
	void *data)
	{
	return dw_hdmi_unbind(dev);
	}

	static const struct component_ops dw_hdmi_rockchip_ops = {
	.bind = dw_hdmi_rockchip_bind,
	.unbind = dw_hdmi_rockchip_unbind,
	};

	static int dw_hdmi_rockchip_probe(struct platform_device *pdev)
	{
	return component_add(&pdev->dev, &dw_hdmi_rockchip_ops);
	}

	static int dw_hdmi_rockchip_remove(struct platform_device *pdev)
	{
	component_del(&pdev->dev, &dw_hdmi_rockchip_ops);

	return 0;
	}

	struct platform_driver dw_hdmi_rockchip_pltfm_driver = {
	.probe = dw_hdmi_rockchip_probe,
	.remove = dw_hdmi_rockchip_remove,
	.driver = {
	.name = "dwhdmi-rockchip",
	.of_match_table = dw_hdmi_rockchip_dt_ids,
	},
	};