mediatek: update patch add PWM support for MT7981

Update patch with version submitted upstream.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

1 files changed, 29 insertions, 119 deletions

diff --git a/target/linux/mediatek/patches-5.15/811-pwm-mediatek-Add-support-for-MT7981.patch b/target/linux/mediatek/patches-5.15/811-pwm-mediatek-Add-support-for-MT7981.patch
index ab465a7582..8f27462cbd 100644
--- a/target/linux/mediatek/patches-5.15/811-pwm-mediatek-Add-support-for-MT7981.patch
+++ b/target/linux/mediatek/patches-5.15/811-pwm-mediatek-Add-support-for-MT7981.patch
@@ -1,6 +1,6 @@
-From 947b535ebfe161e1725f1030a09de10d1460371c Mon Sep 17 00:00:00 2001
+From 73d20ebc21c562fbe79d02fa0fa38e095e716fa9 Mon Sep 17 00:00:00 2001
 From: Daniel Golle <daniel@makrotopia.org>
-Date: Mon, 23 Jan 2023 20:47:34 +0000
+Date: Wed, 19 Apr 2023 20:25:51 +0100
 Subject: [PATCH] pwm: mediatek: Add support for MT7981
 
 The PWM unit on MT7981 uses different register offsets than previous
@@ -10,27 +10,20 @@ used for a temperature controlled fan.
 
 Signed-off-by: Daniel Golle <daniel@makrotopia.org>
 ---
- drivers/pwm/pwm-mediatek.c | 54 ++++++++++++++++++++++++++++++++------
- 1 file changed, 46 insertions(+), 8 deletions(-)
+ drivers/pwm/pwm-mediatek.c | 41 ++++++++++++++++++++++++++++++--------
+ 1 file changed, 33 insertions(+), 8 deletions(-)
 
 --- a/drivers/pwm/pwm-mediatek.c
 +++ b/drivers/pwm/pwm-mediatek.c
-@@ -34,10 +34,14 @@
- 
- #define PWM_CLK_DIV_MAX		7
- 
-+#define REG_V1			1
-+#define REG_V2			2
-+
- struct pwm_mediatek_of_data {
+@@ -38,6 +38,7 @@ struct pwm_mediatek_of_data {
  	unsigned int num_pwms;
  	bool pwm45_fixup;
  	bool has_ck_26m_sel;
-+	u8 reg_ver;
++	const unsigned int *reg_offset;
  };
  
  /**
-@@ -59,10 +63,14 @@ struct pwm_mediatek_chip {
+@@ -59,10 +60,14 @@ struct pwm_mediatek_chip {
  	const struct pwm_mediatek_of_data *soc;
  };
  
@@ -40,169 +33,86 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
  };
  
 +static const unsigned int mtk_pwm_reg_offset_v2[] = {
-+	0x0080, 0x00c0, 0x0100, 0x0140, 0x0180, 0x1c0, 0x200, 0x0240
++	0x0080, 0x00c0, 0x0100, 0x0140, 0x0180, 0x01c0, 0x0200, 0x0240
 +};
 +
  static inline struct pwm_mediatek_chip *
  to_pwm_mediatek_chip(struct pwm_chip *chip)
  {
-@@ -111,7 +119,19 @@ static inline void pwm_mediatek_writel(s
+@@ -111,7 +116,7 @@ static inline void pwm_mediatek_writel(s
  				       unsigned int num, unsigned int offset,
  				       u32 value)
  {
 -	writel(value, chip->regs + pwm_mediatek_reg_offset[num] + offset);
-+	u32 pwm_offset;
-+
-+	switch (chip->soc->reg_ver) {
-+	case REG_V2:
-+		pwm_offset = mtk_pwm_reg_offset_v2[num];
-+		break;
-+
-+	case REG_V1:
-+	default:
-+		pwm_offset = mtk_pwm_reg_offset_v1[num];
-+	}
-+
-+	writel(value, chip->regs + pwm_offset + offset);
++	writel(value, chip->regs + chip->soc->reg_offset[num] + offset);
  }
  
  static int pwm_mediatek_config(struct pwm_chip *chip, struct pwm_device *pwm,
-@@ -146,7 +166,7 @@ static int pwm_mediatek_config(struct pw
- 
- 	if (clkdiv > PWM_CLK_DIV_MAX) {
- 		pwm_mediatek_clk_disable(chip, pwm);
--		dev_err(chip->dev, "period %d not supported\n", period_ns);
-+		dev_err(chip->dev, "period of %d ns not supported\n", period_ns);
- 		return -EINVAL;
- 	}
- 
-@@ -221,24 +241,20 @@ static int pwm_mediatek_probe(struct pla
- 	if (IS_ERR(pc->regs))
- 		return PTR_ERR(pc->regs);
- 
--	pc->clk_pwms = devm_kcalloc(&pdev->dev, pc->soc->num_pwms,
-+	pc->clk_pwms = devm_kmalloc_array(&pdev->dev, pc->soc->num_pwms,
- 				    sizeof(*pc->clk_pwms), GFP_KERNEL);
- 	if (!pc->clk_pwms)
- 		return -ENOMEM;
- 
- 	pc->clk_top = devm_clk_get(&pdev->dev, "top");
--	if (IS_ERR(pc->clk_top)) {
--		dev_err(&pdev->dev, "clock: top fail: %ld\n",
--			PTR_ERR(pc->clk_top));
--		return PTR_ERR(pc->clk_top);
--	}
-+	if (IS_ERR(pc->clk_top))
-+		return dev_err_probe(&pdev->dev, PTR_ERR(pc->clk_top),
-+				     "Failed to get top clock\n");
- 
- 	pc->clk_main = devm_clk_get(&pdev->dev, "main");
--	if (IS_ERR(pc->clk_main)) {
--		dev_err(&pdev->dev, "clock: main fail: %ld\n",
--			PTR_ERR(pc->clk_main));
--		return PTR_ERR(pc->clk_main);
--	}
-+	if (IS_ERR(pc->clk_main))
-+		return dev_err_probe(&pdev->dev, PTR_ERR(pc->clk_main),
-+				     "Failed to get main clock\n");
- 
- 	for (i = 0; i < pc->soc->num_pwms; i++) {
- 		char name[8];
-@@ -246,11 +262,9 @@ static int pwm_mediatek_probe(struct pla
- 		snprintf(name, sizeof(name), "pwm%d", i + 1);
- 
- 		pc->clk_pwms[i] = devm_clk_get(&pdev->dev, name);
--		if (IS_ERR(pc->clk_pwms[i])) {
--			dev_err(&pdev->dev, "clock: %s fail: %ld\n",
--				name, PTR_ERR(pc->clk_pwms[i]));
--			return PTR_ERR(pc->clk_pwms[i]);
--		}
-+		if (IS_ERR(pc->clk_pwms[i]))
-+			return dev_err_probe(&pdev->dev, PTR_ERR(pc->clk_pwms[i]),
-+					     "Failed to get %s clock\n", name);
- 	}
- 
- 	pc->chip.dev = &pdev->dev;
-@@ -258,10 +272,8 @@ static int pwm_mediatek_probe(struct pla
- 	pc->chip.npwm = pc->soc->num_pwms;
- 
- 	ret = devm_pwmchip_add(&pdev->dev, &pc->chip);
--	if (ret < 0) {
--		dev_err(&pdev->dev, "pwmchip_add() failed: %d\n", ret);
--		return ret;
--	}
-+	if (ret < 0)
-+		return dev_err_probe(&pdev->dev, ret, "pwmchip_add() failed\n");
- 
- 	return 0;
- }
-@@ -270,48 +282,63 @@ static const struct pwm_mediatek_of_data
+@@ -270,48 +275,63 @@ static const struct pwm_mediatek_of_data
  	.num_pwms = 8,
  	.pwm45_fixup = false,
  	.has_ck_26m_sel = false,
-+	.reg_ver = REG_V1,
++	.reg_offset = mtk_pwm_reg_offset_v1,
  };
  
  static const struct pwm_mediatek_of_data mt7622_pwm_data = {
  	.num_pwms = 6,
  	.pwm45_fixup = false,
  	.has_ck_26m_sel = true,
-+	.reg_ver = REG_V1,
++	.reg_offset = mtk_pwm_reg_offset_v1,
  };
  
  static const struct pwm_mediatek_of_data mt7623_pwm_data = {
  	.num_pwms = 5,
  	.pwm45_fixup = true,
  	.has_ck_26m_sel = false,
-+	.reg_ver = REG_V1,
++	.reg_offset = mtk_pwm_reg_offset_v1,
  };
  
  static const struct pwm_mediatek_of_data mt7628_pwm_data = {
  	.num_pwms = 4,
  	.pwm45_fixup = true,
  	.has_ck_26m_sel = false,
-+	.reg_ver = REG_V1,
++	.reg_offset = mtk_pwm_reg_offset_v1,
  };
  
  static const struct pwm_mediatek_of_data mt7629_pwm_data = {
  	.num_pwms = 1,
  	.pwm45_fixup = false,
  	.has_ck_26m_sel = false,
-+	.reg_ver = REG_V1,
++	.reg_offset = mtk_pwm_reg_offset_v1,
  };
  
--static const struct pwm_mediatek_of_data mt8183_pwm_data = {
--	.num_pwms = 4,
-+static const struct pwm_mediatek_of_data mt7981_pwm_data = {
-+	.num_pwms = 3,
+ static const struct pwm_mediatek_of_data mt8183_pwm_data = {
+ 	.num_pwms = 4,
  	.pwm45_fixup = false,
  	.has_ck_26m_sel = true,
-+	.reg_ver = REG_V2,
++	.reg_offset = mtk_pwm_reg_offset_v1,
++};
++
++static const struct pwm_mediatek_of_data mt7981_pwm_data = {
++	.num_pwms = 3,
++	.pwm45_fixup = false,
++	.has_ck_26m_sel = true,
++	.reg_offset = mtk_pwm_reg_offset_v2,
  };
  
  static const struct pwm_mediatek_of_data mt7986_pwm_data = {
  	.num_pwms = 2,
  	.pwm45_fixup = false,
  	.has_ck_26m_sel = true,
-+	.reg_ver = REG_V1,
-+};
-+
-+static const struct pwm_mediatek_of_data mt8183_pwm_data = {
-+	.num_pwms = 4,
-+	.pwm45_fixup = false,
-+	.has_ck_26m_sel = true,
-+	.reg_ver = REG_V1,
++	.reg_offset = mtk_pwm_reg_offset_v1,
  };
  
  static const struct pwm_mediatek_of_data mt8516_pwm_data = {
  	.num_pwms = 5,
  	.pwm45_fixup = false,
  	.has_ck_26m_sel = true,
-+	.reg_ver = REG_V1,
++	.reg_offset = mtk_pwm_reg_offset_v1,
  };
  
  static const struct of_device_id pwm_mediatek_of_match[] = {
-@@ -320,6 +347,7 @@ static const struct of_device_id pwm_med
+@@ -320,6 +340,7 @@ static const struct of_device_id pwm_med
  	{ .compatible = "mediatek,mt7623-pwm", .data = &mt7623_pwm_data },
  	{ .compatible = "mediatek,mt7628-pwm", .data = &mt7628_pwm_data },
  	{ .compatible = "mediatek,mt7629-pwm", .data = &mt7629_pwm_data },