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			641 lines
		
	
	
	
		
			17 KiB
		
	
	
	
		
			Diff
		
	
	
	
	
	
			
		
		
	
	
			641 lines
		
	
	
	
		
			17 KiB
		
	
	
	
		
			Diff
		
	
	
	
	
	
| From 186643bd86d33f0a773139deb5af6e12354b5907 Mon Sep 17 00:00:00 2001
 | |
| From: chunhui dai <chunhui.dai@mediatek.com>
 | |
| Date: Wed, 3 Oct 2018 11:41:47 +0800
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| Subject: [PATCH 33/77] drm/mediatek: separate hdmi phy to different file
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| 
 | |
| Different IC has different phy setting of HDMI.
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| This patch separates the phy hardware relate part for mt8173.
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| 
 | |
| Signed-off-by: chunhui dai <chunhui.dai@mediatek.com>
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| Reviewed-by: CK Hu <ck.hu@mediatek.com>
 | |
| ---
 | |
|  drivers/gpu/drm/mediatek/Makefile             |   6 +-
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|  drivers/gpu/drm/mediatek/mtk_hdmi.c           |   1 +
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|  drivers/gpu/drm/mediatek/mtk_hdmi.h           |   2 +-
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|  drivers/gpu/drm/mediatek/mtk_hdmi_phy.c       | 232 ++++++++++++++++++
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|  drivers/gpu/drm/mediatek/mtk_hdmi_phy.h       |  58 +++++
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|  .../gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c    | 226 +----------------
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|  6 files changed, 302 insertions(+), 223 deletions(-)
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|  create mode 100644 drivers/gpu/drm/mediatek/mtk_hdmi_phy.c
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|  create mode 100644 drivers/gpu/drm/mediatek/mtk_hdmi_phy.h
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| 
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| diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile
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| index ce83c396a742..61cf0d2ab28a 100644
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| --- a/drivers/gpu/drm/mediatek/Makefile
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| +++ b/drivers/gpu/drm/mediatek/Makefile
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| @@ -1,4 +1,5 @@
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|  # SPDX-License-Identifier: GPL-2.0
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| +
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|  mediatek-drm-y := mtk_disp_color.o \
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|  		  mtk_disp_ovl.o \
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|  		  mtk_disp_rdma.o \
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| @@ -18,6 +19,7 @@ obj-$(CONFIG_DRM_MEDIATEK) += mediatek-drm.o
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|  mediatek-drm-hdmi-objs := mtk_cec.o \
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|  			  mtk_hdmi.o \
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|  			  mtk_hdmi_ddc.o \
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| -			  mtk_mt8173_hdmi_phy.o
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| +			  mtk_mt8173_hdmi_phy.o \
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| +			  mtk_hdmi_phy.o
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|  
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| -obj-$(CONFIG_DRM_MEDIATEK_HDMI) += mediatek-drm-hdmi.o
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| +obj-$(CONFIG_DRM_MEDIATEK_HDMI) += mediatek-drm-hdmi.o
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| \ No newline at end of file
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| diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
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| index 643f5edd68fe..29bd2a144b19 100644
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| --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
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| +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
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| @@ -233,6 +233,7 @@ static void mtk_hdmi_hw_vid_black(struct mtk_hdmi *hdmi, bool black)
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|  static void mtk_hdmi_hw_make_reg_writable(struct mtk_hdmi *hdmi, bool enable)
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|  {
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|  	struct arm_smccc_res res;
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| +	struct mtk_hdmi_phy *hdmi_phy = phy_get_drvdata(hdmi->phy);
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|  
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|  	/*
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|  	 * MT8173 HDMI hardware has an output control bit to enable/disable HDMI
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| diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.h b/drivers/gpu/drm/mediatek/mtk_hdmi.h
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| index 6371b3de1ff6..3e9fb8d19802 100644
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| --- a/drivers/gpu/drm/mediatek/mtk_hdmi.h
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| +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.h
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| @@ -13,11 +13,11 @@
 | |
|   */
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|  #ifndef _MTK_HDMI_CTRL_H
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|  #define _MTK_HDMI_CTRL_H
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| +#include "mtk_hdmi_phy.h"
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|  
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|  struct platform_driver;
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|  
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|  extern struct platform_driver mtk_cec_driver;
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|  extern struct platform_driver mtk_hdmi_ddc_driver;
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| -extern struct platform_driver mtk_hdmi_phy_driver;
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|  
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|  #endif /* _MTK_HDMI_CTRL_H */
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| diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_phy.c b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.c
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| new file mode 100644
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| index 000000000000..514f3e9a8767
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| --- /dev/null
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| +++ b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.c
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| @@ -0,0 +1,232 @@
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| +// SPDX-License-Identifier: GPL-2.0
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| +/*
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| + * Copyright (c) 2018 MediaTek Inc.
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| + * Author: Jie Qiu <jie.qiu@mediatek.com>
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| + */
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| +
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| +#include "mtk_hdmi_phy.h"
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| +
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| +static int mtk_hdmi_phy_power_on(struct phy *phy);
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| +static int mtk_hdmi_phy_power_off(struct phy *phy);
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| +
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| +static const struct phy_ops mtk_hdmi_phy_dev_ops = {
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| +	.power_on = mtk_hdmi_phy_power_on,
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| +	.power_off = mtk_hdmi_phy_power_off,
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| +	.owner = THIS_MODULE,
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| +};
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| +
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| +long mtk_hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate,
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| +			     unsigned long *parent_rate)
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| +{
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| +	struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
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| +
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| +	hdmi_phy->pll_rate = rate;
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| +	if (rate <= 74250000)
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| +		*parent_rate = rate;
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| +	else
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| +		*parent_rate = rate / 2;
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| +
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| +	return rate;
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| +}
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| +
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| +unsigned long mtk_hdmi_pll_recalc_rate(struct clk_hw *hw,
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| +				       unsigned long parent_rate)
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| +{
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| +	struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
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| +
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| +	return hdmi_phy->pll_rate;
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| +}
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| +
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| +void mtk_hdmi_phy_clear_bits(struct mtk_hdmi_phy *hdmi_phy, u32 offset,
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| +			     u32 bits)
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| +{
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| +	void __iomem *reg = hdmi_phy->regs + offset;
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| +	u32 tmp;
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| +
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| +	tmp = readl(reg);
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| +	tmp &= ~bits;
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| +	writel(tmp, reg);
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| +}
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| +
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| +void mtk_hdmi_phy_set_bits(struct mtk_hdmi_phy *hdmi_phy, u32 offset,
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| +			   u32 bits)
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| +{
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| +	void __iomem *reg = hdmi_phy->regs + offset;
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| +	u32 tmp;
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| +
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| +	tmp = readl(reg);
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| +	tmp |= bits;
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| +	writel(tmp, reg);
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| +}
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| +
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| +void mtk_hdmi_phy_mask(struct mtk_hdmi_phy *hdmi_phy, u32 offset,
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| +		       u32 val, u32 mask)
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| +{
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| +	void __iomem *reg = hdmi_phy->regs + offset;
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| +	u32 tmp;
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| +
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| +	tmp = readl(reg);
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| +	tmp = (tmp & ~mask) | (val & mask);
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| +	writel(tmp, reg);
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| +}
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| +
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| +inline struct mtk_hdmi_phy *to_mtk_hdmi_phy(struct clk_hw *hw)
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| +{
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| +	return container_of(hw, struct mtk_hdmi_phy, pll_hw);
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| +}
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| +
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| +static int mtk_hdmi_phy_power_on(struct phy *phy)
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| +{
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| +	struct mtk_hdmi_phy *hdmi_phy = phy_get_drvdata(phy);
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| +	int ret;
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| +
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| +	ret = clk_prepare_enable(hdmi_phy->pll);
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| +	if (ret < 0)
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| +		return ret;
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| +
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| +	hdmi_phy->conf->hdmi_phy_enable_tmds(hdmi_phy);
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| +	return 0;
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| +}
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| +
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| +static int mtk_hdmi_phy_power_off(struct phy *phy)
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| +{
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| +	struct mtk_hdmi_phy *hdmi_phy = phy_get_drvdata(phy);
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| +
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| +	hdmi_phy->conf->hdmi_phy_disable_tmds(hdmi_phy);
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| +	clk_disable_unprepare(hdmi_phy->pll);
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| +
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| +	return 0;
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| +}
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| +
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| +static const struct phy_ops *
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| +mtk_hdmi_phy_dev_get_ops(const struct mtk_hdmi_phy *hdmi_phy)
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| +{
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| +	if (hdmi_phy && hdmi_phy->conf &&
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| +	    hdmi_phy->conf->hdmi_phy_enable_tmds &&
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| +	    hdmi_phy->conf->hdmi_phy_disable_tmds)
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| +		return &mtk_hdmi_phy_dev_ops;
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| +
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| +	dev_err(hdmi_phy->dev, "Failed to get dev ops of phy\n");
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| +		return NULL;
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| +}
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| +
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| +static void mtk_hdmi_phy_clk_get_ops(struct mtk_hdmi_phy *hdmi_phy,
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| +				     const struct clk_ops **ops)
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| +{
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| +	if (hdmi_phy && hdmi_phy->conf && hdmi_phy->conf->hdmi_phy_clk_ops)
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| +		*ops = hdmi_phy->conf->hdmi_phy_clk_ops;
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| +	else
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| +		dev_err(hdmi_phy->dev, "Failed to get clk ops of phy\n");
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| +}
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| +
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| +static int mtk_hdmi_phy_probe(struct platform_device *pdev)
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| +{
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| +	struct device *dev = &pdev->dev;
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| +	struct mtk_hdmi_phy *hdmi_phy;
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| +	struct resource *mem;
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| +	struct clk *ref_clk;
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| +	const char *ref_clk_name;
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| +	struct clk_init_data clk_init = {
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| +		.num_parents = 1,
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| +		.parent_names = (const char * const *)&ref_clk_name,
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| +		.flags = CLK_SET_RATE_PARENT | CLK_SET_RATE_GATE,
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| +	};
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| +
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| +	struct phy *phy;
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| +	struct phy_provider *phy_provider;
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| +	int ret;
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| +
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| +	hdmi_phy = devm_kzalloc(dev, sizeof(*hdmi_phy), GFP_KERNEL);
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| +	if (!hdmi_phy)
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| +		return -ENOMEM;
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| +
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| +	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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| +	hdmi_phy->regs = devm_ioremap_resource(dev, mem);
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| +	if (IS_ERR(hdmi_phy->regs)) {
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| +		ret = PTR_ERR(hdmi_phy->regs);
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| +		dev_err(dev, "Failed to get memory resource: %d\n", ret);
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| +		return ret;
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| +	}
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| +
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| +	ref_clk = devm_clk_get(dev, "pll_ref");
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| +	if (IS_ERR(ref_clk)) {
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| +		ret = PTR_ERR(ref_clk);
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| +		dev_err(&pdev->dev, "Failed to get PLL reference clock: %d\n",
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| +			ret);
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| +		return ret;
 | |
| +	}
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| +	ref_clk_name = __clk_get_name(ref_clk);
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| +
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| +	ret = of_property_read_string(dev->of_node, "clock-output-names",
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| +				      &clk_init.name);
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| +	if (ret < 0) {
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| +		dev_err(dev, "Failed to read clock-output-names: %d\n", ret);
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| +		return ret;
 | |
| +	}
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| +
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| +	hdmi_phy->dev = dev;
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| +	hdmi_phy->conf =
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| +		(struct mtk_hdmi_phy_conf *)of_device_get_match_data(dev);
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| +	mtk_hdmi_phy_clk_get_ops(hdmi_phy, &clk_init.ops);
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| +	hdmi_phy->pll_hw.init = &clk_init;
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| +	hdmi_phy->pll = devm_clk_register(dev, &hdmi_phy->pll_hw);
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| +	if (IS_ERR(hdmi_phy->pll)) {
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| +		ret = PTR_ERR(hdmi_phy->pll);
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| +		dev_err(dev, "Failed to register PLL: %d\n", ret);
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| +		return ret;
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| +	}
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| +
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| +	ret = of_property_read_u32(dev->of_node, "mediatek,ibias",
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| +				   &hdmi_phy->ibias);
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| +	if (ret < 0) {
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| +		dev_err(&pdev->dev, "Failed to get ibias: %d\n", ret);
 | |
| +		return ret;
 | |
| +	}
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| +
 | |
| +	ret = of_property_read_u32(dev->of_node, "mediatek,ibias_up",
 | |
| +				   &hdmi_phy->ibias_up);
 | |
| +	if (ret < 0) {
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| +		dev_err(&pdev->dev, "Failed to get ibias up: %d\n", ret);
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| +		return ret;
 | |
| +	}
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| +
 | |
| +	dev_info(dev, "Using default TX DRV impedance: 4.2k/36\n");
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| +	hdmi_phy->drv_imp_clk = 0x30;
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| +	hdmi_phy->drv_imp_d2 = 0x30;
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| +	hdmi_phy->drv_imp_d1 = 0x30;
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| +	hdmi_phy->drv_imp_d0 = 0x30;
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| +
 | |
| +	phy = devm_phy_create(dev, NULL, mtk_hdmi_phy_dev_get_ops(hdmi_phy));
 | |
| +	if (IS_ERR(phy)) {
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| +		dev_err(dev, "Failed to create HDMI PHY\n");
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| +		return PTR_ERR(phy);
 | |
| +	}
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| +	phy_set_drvdata(phy, hdmi_phy);
 | |
| +
 | |
| +	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
 | |
| +	if (IS_ERR(phy_provider)) {
 | |
| +		dev_err(dev, "Failed to register HDMI PHY\n");
 | |
| +		return PTR_ERR(phy_provider);
 | |
| +	}
 | |
| +
 | |
| +	return of_clk_add_provider(dev->of_node, of_clk_src_simple_get,
 | |
| +				   hdmi_phy->pll);
 | |
| +}
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| +
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| +static const struct of_device_id mtk_hdmi_phy_match[] = {
 | |
| +	{ .compatible = "mediatek,mt8173-hdmi-phy",
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| +	  .data = &mtk_hdmi_phy_8173_conf,
 | |
| +	},
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| +	{},
 | |
| +};
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| +
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| +struct platform_driver mtk_hdmi_phy_driver = {
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| +	.probe = mtk_hdmi_phy_probe,
 | |
| +	.driver = {
 | |
| +		.name = "mediatek-hdmi-phy",
 | |
| +		.of_match_table = mtk_hdmi_phy_match,
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| +	},
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| +};
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| +
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| +MODULE_DESCRIPTION("MediaTek HDMI PHY Driver");
 | |
| +MODULE_LICENSE("GPL v2");
 | |
| diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_phy.h b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.h
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| new file mode 100644
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| index 000000000000..09b8f525e6b8
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| --- /dev/null
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| +++ b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.h
 | |
| @@ -0,0 +1,58 @@
 | |
| +/* SPDX-License-Identifier: GPL-2.0 */
 | |
| +/*
 | |
| + * Copyright (c) 2018 MediaTek Inc.
 | |
| + * Author: Chunhui Dai <chunhui.dai@mediatek.com>
 | |
| + */
 | |
| +
 | |
| +#ifndef _MTK_HDMI_PHY_H
 | |
| +#define _MTK_HDMI_PHY_H
 | |
| +#include <linux/clk.h>
 | |
| +#include <linux/clk-provider.h>
 | |
| +#include <linux/delay.h>
 | |
| +#include <linux/io.h>
 | |
| +#include <linux/mfd/syscon.h>
 | |
| +#include <linux/module.h>
 | |
| +#include <linux/of_device.h>
 | |
| +#include <linux/phy/phy.h>
 | |
| +#include <linux/platform_device.h>
 | |
| +#include <linux/types.h>
 | |
| +
 | |
| +struct mtk_hdmi_phy;
 | |
| +
 | |
| +struct mtk_hdmi_phy_conf {
 | |
| +	const struct clk_ops *hdmi_phy_clk_ops;
 | |
| +	void (*hdmi_phy_enable_tmds)(struct mtk_hdmi_phy *hdmi_phy);
 | |
| +	void (*hdmi_phy_disable_tmds)(struct mtk_hdmi_phy *hdmi_phy);
 | |
| +};
 | |
| +
 | |
| +struct mtk_hdmi_phy {
 | |
| +	void __iomem *regs;
 | |
| +	struct device *dev;
 | |
| +	struct mtk_hdmi_phy_conf *conf;
 | |
| +	struct clk *pll;
 | |
| +	struct clk_hw pll_hw;
 | |
| +	unsigned long pll_rate;
 | |
| +	unsigned char drv_imp_clk;
 | |
| +	unsigned char drv_imp_d2;
 | |
| +	unsigned char drv_imp_d1;
 | |
| +	unsigned char drv_imp_d0;
 | |
| +	unsigned int ibias;
 | |
| +	unsigned int ibias_up;
 | |
| +};
 | |
| +
 | |
| +void mtk_hdmi_phy_clear_bits(struct mtk_hdmi_phy *hdmi_phy, u32 offset,
 | |
| +			     u32 bits);
 | |
| +void mtk_hdmi_phy_set_bits(struct mtk_hdmi_phy *hdmi_phy, u32 offset,
 | |
| +			   u32 bits);
 | |
| +void mtk_hdmi_phy_mask(struct mtk_hdmi_phy *hdmi_phy, u32 offset,
 | |
| +		       u32 val, u32 mask);
 | |
| +struct mtk_hdmi_phy *to_mtk_hdmi_phy(struct clk_hw *hw);
 | |
| +long mtk_hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate,
 | |
| +			     unsigned long *parent_rate);
 | |
| +unsigned long mtk_hdmi_pll_recalc_rate(struct clk_hw *hw,
 | |
| +				       unsigned long parent_rate);
 | |
| +
 | |
| +extern struct platform_driver mtk_hdmi_phy_driver;
 | |
| +extern struct mtk_hdmi_phy_conf mtk_hdmi_phy_8173_conf;
 | |
| +
 | |
| +#endif /* _MTK_HDMI_PHY_H */
 | |
| diff --git a/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c b/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c
 | |
| index 51cb9cfb6646..ed5916b27658 100644
 | |
| --- a/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c
 | |
| +++ b/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c
 | |
| @@ -12,15 +12,7 @@
 | |
|   * GNU General Public License for more details.
 | |
|   */
 | |
|  
 | |
| -#include <linux/clk.h>
 | |
| -#include <linux/clk-provider.h>
 | |
| -#include <linux/delay.h>
 | |
| -#include <linux/io.h>
 | |
| -#include <linux/mfd/syscon.h>
 | |
| -#include <linux/module.h>
 | |
| -#include <linux/phy/phy.h>
 | |
| -#include <linux/platform_device.h>
 | |
| -#include <linux/types.h>
 | |
| +#include "mtk_hdmi_phy.h"
 | |
|  
 | |
|  #define HDMI_CON0		0x00
 | |
|  #define RG_HDMITX_PLL_EN		BIT(31)
 | |
| @@ -123,20 +115,6 @@
 | |
|  #define RGS_HDMITX_5T1_EDG		(0xf << 4)
 | |
|  #define RGS_HDMITX_PLUG_TST		BIT(0)
 | |
|  
 | |
| -struct mtk_hdmi_phy {
 | |
| -	void __iomem *regs;
 | |
| -	struct device *dev;
 | |
| -	struct clk *pll;
 | |
| -	struct clk_hw pll_hw;
 | |
| -	unsigned long pll_rate;
 | |
| -	u8 drv_imp_clk;
 | |
| -	u8 drv_imp_d2;
 | |
| -	u8 drv_imp_d1;
 | |
| -	u8 drv_imp_d0;
 | |
| -	u32 ibias;
 | |
| -	u32 ibias_up;
 | |
| -};
 | |
| -
 | |
|  static const u8 PREDIV[3][4] = {
 | |
|  	{0x0, 0x0, 0x0, 0x0},	/* 27Mhz */
 | |
|  	{0x1, 0x1, 0x1, 0x1},	/* 74Mhz */
 | |
| @@ -185,44 +163,6 @@ static const u8 HTPLLBR[3][4] = {
 | |
|  	{0x1, 0x2, 0x2, 0x1}	/* 148Mhz */
 | |
|  };
 | |
|  
 | |
| -static void mtk_hdmi_phy_clear_bits(struct mtk_hdmi_phy *hdmi_phy, u32 offset,
 | |
| -				    u32 bits)
 | |
| -{
 | |
| -	void __iomem *reg = hdmi_phy->regs + offset;
 | |
| -	u32 tmp;
 | |
| -
 | |
| -	tmp = readl(reg);
 | |
| -	tmp &= ~bits;
 | |
| -	writel(tmp, reg);
 | |
| -}
 | |
| -
 | |
| -static void mtk_hdmi_phy_set_bits(struct mtk_hdmi_phy *hdmi_phy, u32 offset,
 | |
| -				  u32 bits)
 | |
| -{
 | |
| -	void __iomem *reg = hdmi_phy->regs + offset;
 | |
| -	u32 tmp;
 | |
| -
 | |
| -	tmp = readl(reg);
 | |
| -	tmp |= bits;
 | |
| -	writel(tmp, reg);
 | |
| -}
 | |
| -
 | |
| -static void mtk_hdmi_phy_mask(struct mtk_hdmi_phy *hdmi_phy, u32 offset,
 | |
| -			      u32 val, u32 mask)
 | |
| -{
 | |
| -	void __iomem *reg = hdmi_phy->regs + offset;
 | |
| -	u32 tmp;
 | |
| -
 | |
| -	tmp = readl(reg);
 | |
| -	tmp = (tmp & ~mask) | (val & mask);
 | |
| -	writel(tmp, reg);
 | |
| -}
 | |
| -
 | |
| -static inline struct mtk_hdmi_phy *to_mtk_hdmi_phy(struct clk_hw *hw)
 | |
| -{
 | |
| -	return container_of(hw, struct mtk_hdmi_phy, pll_hw);
 | |
| -}
 | |
| -
 | |
|  static int mtk_hdmi_pll_prepare(struct clk_hw *hw)
 | |
|  {
 | |
|  	struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
 | |
| @@ -345,29 +285,7 @@ static int mtk_hdmi_pll_set_rate(struct clk_hw *hw, unsigned long rate,
 | |
|  	return 0;
 | |
|  }
 | |
|  
 | |
| -static long mtk_hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate,
 | |
| -				    unsigned long *parent_rate)
 | |
| -{
 | |
| -	struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
 | |
| -
 | |
| -	hdmi_phy->pll_rate = rate;
 | |
| -	if (rate <= 74250000)
 | |
| -		*parent_rate = rate;
 | |
| -	else
 | |
| -		*parent_rate = rate / 2;
 | |
| -
 | |
| -	return rate;
 | |
| -}
 | |
| -
 | |
| -static unsigned long mtk_hdmi_pll_recalc_rate(struct clk_hw *hw,
 | |
| -					      unsigned long parent_rate)
 | |
| -{
 | |
| -	struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
 | |
| -
 | |
| -	return hdmi_phy->pll_rate;
 | |
| -}
 | |
| -
 | |
| -static const struct clk_ops mtk_hdmi_pll_ops = {
 | |
| +static const struct clk_ops mtk_hdmi_phy_pll_ops = {
 | |
|  	.prepare = mtk_hdmi_pll_prepare,
 | |
|  	.unprepare = mtk_hdmi_pll_unprepare,
 | |
|  	.set_rate = mtk_hdmi_pll_set_rate,
 | |
| @@ -390,142 +308,10 @@ static void mtk_hdmi_phy_disable_tmds(struct mtk_hdmi_phy *hdmi_phy)
 | |
|  				RG_HDMITX_SER_EN);
 | |
|  }
 | |
|  
 | |
| -static int mtk_hdmi_phy_power_on(struct phy *phy)
 | |
| -{
 | |
| -	struct mtk_hdmi_phy *hdmi_phy = phy_get_drvdata(phy);
 | |
| -	int ret;
 | |
| -
 | |
| -	ret = clk_prepare_enable(hdmi_phy->pll);
 | |
| -	if (ret < 0)
 | |
| -		return ret;
 | |
| -
 | |
| -	mtk_hdmi_phy_enable_tmds(hdmi_phy);
 | |
| -
 | |
| -	return 0;
 | |
| -}
 | |
| -
 | |
| -static int mtk_hdmi_phy_power_off(struct phy *phy)
 | |
| -{
 | |
| -	struct mtk_hdmi_phy *hdmi_phy = phy_get_drvdata(phy);
 | |
| -
 | |
| -	mtk_hdmi_phy_disable_tmds(hdmi_phy);
 | |
| -	clk_disable_unprepare(hdmi_phy->pll);
 | |
| -
 | |
| -	return 0;
 | |
| -}
 | |
| -
 | |
| -static const struct phy_ops mtk_hdmi_phy_ops = {
 | |
| -	.power_on = mtk_hdmi_phy_power_on,
 | |
| -	.power_off = mtk_hdmi_phy_power_off,
 | |
| -	.owner = THIS_MODULE,
 | |
| -};
 | |
| -
 | |
| -static int mtk_hdmi_phy_probe(struct platform_device *pdev)
 | |
| -{
 | |
| -	struct device *dev = &pdev->dev;
 | |
| -	struct mtk_hdmi_phy *hdmi_phy;
 | |
| -	struct resource *mem;
 | |
| -	struct clk *ref_clk;
 | |
| -	const char *ref_clk_name;
 | |
| -	struct clk_init_data clk_init = {
 | |
| -		.ops = &mtk_hdmi_pll_ops,
 | |
| -		.num_parents = 1,
 | |
| -		.parent_names = (const char * const *)&ref_clk_name,
 | |
| -		.flags = CLK_SET_RATE_PARENT | CLK_SET_RATE_GATE,
 | |
| -	};
 | |
| -	struct phy *phy;
 | |
| -	struct phy_provider *phy_provider;
 | |
| -	int ret;
 | |
| -
 | |
| -	hdmi_phy = devm_kzalloc(dev, sizeof(*hdmi_phy), GFP_KERNEL);
 | |
| -	if (!hdmi_phy)
 | |
| -		return -ENOMEM;
 | |
| -
 | |
| -	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 | |
| -	hdmi_phy->regs = devm_ioremap_resource(dev, mem);
 | |
| -	if (IS_ERR(hdmi_phy->regs)) {
 | |
| -		ret = PTR_ERR(hdmi_phy->regs);
 | |
| -		dev_err(dev, "Failed to get memory resource: %d\n", ret);
 | |
| -		return ret;
 | |
| -	}
 | |
| -
 | |
| -	ref_clk = devm_clk_get(dev, "pll_ref");
 | |
| -	if (IS_ERR(ref_clk)) {
 | |
| -		ret = PTR_ERR(ref_clk);
 | |
| -		dev_err(&pdev->dev, "Failed to get PLL reference clock: %d\n",
 | |
| -			ret);
 | |
| -		return ret;
 | |
| -	}
 | |
| -	ref_clk_name = __clk_get_name(ref_clk);
 | |
| -
 | |
| -	ret = of_property_read_string(dev->of_node, "clock-output-names",
 | |
| -				      &clk_init.name);
 | |
| -	if (ret < 0) {
 | |
| -		dev_err(dev, "Failed to read clock-output-names: %d\n", ret);
 | |
| -		return ret;
 | |
| -	}
 | |
| -
 | |
| -	hdmi_phy->pll_hw.init = &clk_init;
 | |
| -	hdmi_phy->pll = devm_clk_register(dev, &hdmi_phy->pll_hw);
 | |
| -	if (IS_ERR(hdmi_phy->pll)) {
 | |
| -		ret = PTR_ERR(hdmi_phy->pll);
 | |
| -		dev_err(dev, "Failed to register PLL: %d\n", ret);
 | |
| -		return ret;
 | |
| -	}
 | |
| -
 | |
| -	ret = of_property_read_u32(dev->of_node, "mediatek,ibias",
 | |
| -				   &hdmi_phy->ibias);
 | |
| -	if (ret < 0) {
 | |
| -		dev_err(&pdev->dev, "Failed to get ibias: %d\n", ret);
 | |
| -		return ret;
 | |
| -	}
 | |
| -
 | |
| -	ret = of_property_read_u32(dev->of_node, "mediatek,ibias_up",
 | |
| -				   &hdmi_phy->ibias_up);
 | |
| -	if (ret < 0) {
 | |
| -		dev_err(&pdev->dev, "Failed to get ibias up: %d\n", ret);
 | |
| -		return ret;
 | |
| -	}
 | |
| -
 | |
| -	dev_info(dev, "Using default TX DRV impedance: 4.2k/36\n");
 | |
| -	hdmi_phy->drv_imp_clk = 0x30;
 | |
| -	hdmi_phy->drv_imp_d2 = 0x30;
 | |
| -	hdmi_phy->drv_imp_d1 = 0x30;
 | |
| -	hdmi_phy->drv_imp_d0 = 0x30;
 | |
| -
 | |
| -	phy = devm_phy_create(dev, NULL, &mtk_hdmi_phy_ops);
 | |
| -	if (IS_ERR(phy)) {
 | |
| -		dev_err(dev, "Failed to create HDMI PHY\n");
 | |
| -		return PTR_ERR(phy);
 | |
| -	}
 | |
| -	phy_set_drvdata(phy, hdmi_phy);
 | |
| -
 | |
| -	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
 | |
| -	if (IS_ERR(phy_provider))
 | |
| -		return PTR_ERR(phy_provider);
 | |
| -
 | |
| -	hdmi_phy->dev = dev;
 | |
| -	return of_clk_add_provider(dev->of_node, of_clk_src_simple_get,
 | |
| -				   hdmi_phy->pll);
 | |
| -}
 | |
| -
 | |
| -static int mtk_hdmi_phy_remove(struct platform_device *pdev)
 | |
| -{
 | |
| -	return 0;
 | |
| -}
 | |
| -
 | |
| -static const struct of_device_id mtk_hdmi_phy_match[] = {
 | |
| -	{ .compatible = "mediatek,mt8173-hdmi-phy", },
 | |
| -	{},
 | |
| -};
 | |
| -
 | |
| -struct platform_driver mtk_hdmi_phy_driver = {
 | |
| -	.probe = mtk_hdmi_phy_probe,
 | |
| -	.remove = mtk_hdmi_phy_remove,
 | |
| -	.driver = {
 | |
| -		.name = "mediatek-hdmi-phy",
 | |
| -		.of_match_table = mtk_hdmi_phy_match,
 | |
| -	},
 | |
| +struct mtk_hdmi_phy_conf mtk_hdmi_phy_8173_conf = {
 | |
| +	.hdmi_phy_clk_ops = &mtk_hdmi_phy_pll_ops,
 | |
| +	.hdmi_phy_enable_tmds = mtk_hdmi_phy_enable_tmds,
 | |
| +	.hdmi_phy_disable_tmds = mtk_hdmi_phy_disable_tmds,
 | |
|  };
 | |
|  
 | |
|  MODULE_AUTHOR("Jie Qiu <jie.qiu@mediatek.com>");
 | |
| -- 
 | |
| 2.19.1
 | |
| 
 |