drm/mediatek: separate hdmi phy to different file

Different IC has different phy setting of HDMI.
This patch separates the phy hardware relate part for mt8173.

Signed-off-by: chunhui dai <chunhui.dai@mediatek.com>
Signed-off-by: CK Hu <ck.hu@mediatek.com>

drivers/gpu/drm/mediatek/Makefile

@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
+
 mediatek-drm-y := mtk_disp_color.o \
 		  mtk_disp_ovl.o \
 		  mtk_disp_rdma.o \
@@ -18,6 +19,7 @@ obj-$(CONFIG_DRM_MEDIATEK) += mediatek-drm.o
 mediatek-drm-hdmi-objs := mtk_cec.o \
 			  mtk_hdmi.o \
 			  mtk_hdmi_ddc.o \
-			  mtk_mt8173_hdmi_phy.o
+			  mtk_mt8173_hdmi_phy.o \
+			  mtk_hdmi_phy.o
 
-obj-$(CONFIG_DRM_MEDIATEK_HDMI) += mediatek-drm-hdmi.o
+obj-$(CONFIG_DRM_MEDIATEK_HDMI) += mediatek-drm-hdmi.o

drivers/gpu/drm/mediatek/mtk_hdmi.c

@@ -233,6 +233,7 @@ static void mtk_hdmi_hw_vid_black(struct mtk_hdmi *hdmi, bool black)
 static void mtk_hdmi_hw_make_reg_writable(struct mtk_hdmi *hdmi, bool enable)
 {
 	struct arm_smccc_res res;
+	struct mtk_hdmi_phy *hdmi_phy = phy_get_drvdata(hdmi->phy);
 
 	/*
 	 * MT8173 HDMI hardware has an output control bit to enable/disable HDMI

drivers/gpu/drm/mediatek/mtk_hdmi.h

@@ -13,11 +13,11 @@
  */
 #ifndef _MTK_HDMI_CTRL_H
 #define _MTK_HDMI_CTRL_H
+#include "mtk_hdmi_phy.h"
 
 struct platform_driver;
 
 extern struct platform_driver mtk_cec_driver;
 extern struct platform_driver mtk_hdmi_ddc_driver;
-extern struct platform_driver mtk_hdmi_phy_driver;
 
 #endif /* _MTK_HDMI_CTRL_H */

drivers/gpu/drm/mediatek/mtk_hdmi_phy.c

@@ -0,0 +1,232 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018 MediaTek Inc.
+ * Author: Jie Qiu <jie.qiu@mediatek.com>
+ */
+
+#include "mtk_hdmi_phy.h"
+
+static int mtk_hdmi_phy_power_on(struct phy *phy);
+static int mtk_hdmi_phy_power_off(struct phy *phy);
+
+static const struct phy_ops mtk_hdmi_phy_dev_ops = {
+	.power_on = mtk_hdmi_phy_power_on,
+	.power_off = mtk_hdmi_phy_power_off,
+	.owner = THIS_MODULE,
+};
+
+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;
+}
+
+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;
+}
+
+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);
+}
+
+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);
+}
+
+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);
+}
+
+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_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;
+
+	hdmi_phy->conf->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);
+
+	hdmi_phy->conf->hdmi_phy_disable_tmds(hdmi_phy);
+	clk_disable_unprepare(hdmi_phy->pll);
+
+	return 0;
+}
+
+static const struct phy_ops *
+mtk_hdmi_phy_dev_get_ops(const struct mtk_hdmi_phy *hdmi_phy)
+{
+	if (hdmi_phy && hdmi_phy->conf &&
+	    hdmi_phy->conf->hdmi_phy_enable_tmds &&
+	    hdmi_phy->conf->hdmi_phy_disable_tmds)
+		return &mtk_hdmi_phy_dev_ops;
+
+	dev_err(hdmi_phy->dev, "Failed to get dev ops of phy\n");
+		return NULL;
+}
+
+static void mtk_hdmi_phy_clk_get_ops(struct mtk_hdmi_phy *hdmi_phy,
+				     const struct clk_ops **ops)
+{
+	if (hdmi_phy && hdmi_phy->conf && hdmi_phy->conf->hdmi_phy_clk_ops)
+		*ops = hdmi_phy->conf->hdmi_phy_clk_ops;
+	else
+		dev_err(hdmi_phy->dev, "Failed to get clk ops of phy\n");
+}
+
+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 = {
+		.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->dev = dev;
+	hdmi_phy->conf =
+		(struct mtk_hdmi_phy_conf *)of_device_get_match_data(dev);
+	mtk_hdmi_phy_clk_get_ops(hdmi_phy, &clk_init.ops);
+	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_dev_get_ops(hdmi_phy));
+	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)) {
+		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);
+}
+
+static const struct of_device_id mtk_hdmi_phy_match[] = {
+	{ .compatible = "mediatek,mt8173-hdmi-phy",
+	  .data = &mtk_hdmi_phy_8173_conf,
+	},
+	{},
+};
+
+struct platform_driver mtk_hdmi_phy_driver = {
+	.probe = mtk_hdmi_phy_probe,
+	.driver = {
+		.name = "mediatek-hdmi-phy",
+		.of_match_table = mtk_hdmi_phy_match,
+	},
+};
+
+MODULE_DESCRIPTION("MediaTek HDMI PHY Driver");
+MODULE_LICENSE("GPL v2");

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 */

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>");