Re: [Freedreno] [PATCH 1/2] drm/msm/hdmi: use bulk regulator API

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On 2021-10-14 17:10, Dmitry Baryshkov wrote:

Switch to using bulk regulator API instead of hand coding loops.


Nice cleanup!


Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>


Reviewed-by: Abhinav Kumar <abhinavk@xxxxxxxxxxxxxx>

---
 drivers/gpu/drm/msm/hdmi/hdmi.c           | 34 +++++++----------------
 drivers/gpu/drm/msm/hdmi/hdmi.h           |  6 ++--
 drivers/gpu/drm/msm/hdmi/hdmi_bridge.c    | 20 ++++---------
 drivers/gpu/drm/msm/hdmi/hdmi_connector.c | 24 ++++++----------
 drivers/gpu/drm/msm/hdmi/hdmi_phy.c       | 33 ++++++++--------------
 5 files changed, 40 insertions(+), 77 deletions(-)
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c 
index 737453b6e596..db17a000d968 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
@@ -154,19 +154,13 @@ static struct hdmi *msm_hdmi_init(struct
platform_device *pdev)
 		ret = -ENOMEM;
 		goto fail;
 	}
-	for (i = 0; i < config->hpd_reg_cnt; i++) {
-		struct regulator *reg;
-
-		reg = devm_regulator_get(&pdev->dev,
-				config->hpd_reg_names[i]);
-		if (IS_ERR(reg)) {
-			ret = PTR_ERR(reg);
-			DRM_DEV_ERROR(&pdev->dev, "failed to get hpd regulator: %s (%d)\n",
-					config->hpd_reg_names[i], ret);
-			goto fail;
-		}
+	for (i = 0; i < config->hpd_reg_cnt; i++)
+		hdmi->hpd_regs[i].supply = config->hpd_reg_names[i];

-		hdmi->hpd_regs[i] = reg;
+	ret = devm_regulator_bulk_get(&pdev->dev, config->hpd_reg_cnt,
hdmi->hpd_regs);
+	if (ret) {
+		DRM_DEV_ERROR(&pdev->dev, "failed to get hpd regulator: %d\n", ret);
+		goto fail;
 	}

 	hdmi->pwr_regs = devm_kcalloc(&pdev->dev,
@@ -177,19 +171,11 @@ static struct hdmi *msm_hdmi_init(struct
platform_device *pdev)
 		ret = -ENOMEM;
 		goto fail;
 	}
-	for (i = 0; i < config->pwr_reg_cnt; i++) {
-		struct regulator *reg;

-		reg = devm_regulator_get(&pdev->dev,
-				config->pwr_reg_names[i]);
-		if (IS_ERR(reg)) {
-			ret = PTR_ERR(reg);
-			DRM_DEV_ERROR(&pdev->dev, "failed to get pwr regulator: %s (%d)\n",
-					config->pwr_reg_names[i], ret);
-			goto fail;
-		}
-
-		hdmi->pwr_regs[i] = reg;
+	ret = devm_regulator_bulk_get(&pdev->dev, config->pwr_reg_cnt,
hdmi->pwr_regs);
+	if (ret) {
+		DRM_DEV_ERROR(&pdev->dev, "failed to get pwr regulator: %d\n", ret);
+		goto fail;
 	}

 	hdmi->hpd_clks = devm_kcalloc(&pdev->dev,
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h b/drivers/gpu/drm/msm/hdmi/hdmi.h 
index d0b84f0abee1..82261078c6b1 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.h
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.h
@@ -56,8 +56,8 @@ struct hdmi {
 	void __iomem *qfprom_mmio;
 	phys_addr_t mmio_phy_addr;

-	struct regulator **hpd_regs;
-	struct regulator **pwr_regs;
+	struct regulator_bulk_data *hpd_regs;
+	struct regulator_bulk_data *pwr_regs;
 	struct clk **hpd_clks;
 	struct clk **pwr_clks;

@@ -163,7 +163,7 @@ struct hdmi_phy {
 	void __iomem *mmio;
 	struct hdmi_phy_cfg *cfg;
 	const struct hdmi_phy_funcs *funcs;
-	struct regulator **regs;
+	struct regulator_bulk_data *regs;
 	struct clk **clks;
 };

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
index 6e380db9287b..f04eb4a70f0d 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
@@ -28,13 +28,9 @@ static void msm_hdmi_power_on(struct drm_bridge *bridge) 

 	pm_runtime_get_sync(&hdmi->pdev->dev);

-	for (i = 0; i < config->pwr_reg_cnt; i++) {
-		ret = regulator_enable(hdmi->pwr_regs[i]);
-		if (ret) {
- DRM_DEV_ERROR(dev->dev, "failed to enable pwr regulator: %s (%d)\n", 
-					config->pwr_reg_names[i], ret);
-		}
-	}
+	ret = regulator_bulk_enable(config->pwr_reg_cnt, hdmi->pwr_regs);
+	if (ret)
+ DRM_DEV_ERROR(dev->dev, "failed to enable pwr regulator: %d\n", ret); 

 	if (config->pwr_clk_cnt > 0) {
 		DBG("pixclock: %lu", hdmi->pixclock);
@@ -70,13 +66,9 @@ static void power_off(struct drm_bridge *bridge)
 	for (i = 0; i < config->pwr_clk_cnt; i++)
 		clk_disable_unprepare(hdmi->pwr_clks[i]);

-	for (i = 0; i < config->pwr_reg_cnt; i++) {
-		ret = regulator_disable(hdmi->pwr_regs[i]);
-		if (ret) {
- DRM_DEV_ERROR(dev->dev, "failed to disable pwr regulator: %s (%d)\n", 
-					config->pwr_reg_names[i], ret);
-		}
-	}
+	ret = regulator_bulk_disable(config->pwr_reg_cnt, hdmi->pwr_regs);
+	if (ret)
+ DRM_DEV_ERROR(dev->dev, "failed to disable pwr regulator: %d\n", ret); 

 	pm_runtime_put_autosuspend(&hdmi->pdev->dev);
 }
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
index 58707a1f3878..a7f729cdec7b 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
@@ -146,16 +146,13 @@ int msm_hdmi_hpd_enable(struct drm_connector *connector) 
 	const struct hdmi_platform_config *config = hdmi->config;
 	struct device *dev = &hdmi->pdev->dev;
 	uint32_t hpd_ctrl;
-	int i, ret;
+	int ret;
 	unsigned long flags;

-	for (i = 0; i < config->hpd_reg_cnt; i++) {
-		ret = regulator_enable(hdmi->hpd_regs[i]);
-		if (ret) {
-			DRM_DEV_ERROR(dev, "failed to enable hpd regulator: %s (%d)\n",
-					config->hpd_reg_names[i], ret);
-			goto fail;
-		}
+	ret = regulator_bulk_enable(config->hpd_reg_cnt, hdmi->hpd_regs);
+	if (ret) {
+		DRM_DEV_ERROR(dev, "failed to enable hpd regulators: %d\n", ret);
+		goto fail;
 	}

 	ret = pinctrl_pm_select_default_state(dev);
@@ -207,7 +204,7 @@ static void hdp_disable(struct hdmi_connector
*hdmi_connector)
 	struct hdmi *hdmi = hdmi_connector->hdmi;
 	const struct hdmi_platform_config *config = hdmi->config;
 	struct device *dev = &hdmi->pdev->dev;
-	int i, ret = 0;
+	int ret;

 	/* Disable HPD interrupt */
 	hdmi_write(hdmi, REG_HDMI_HPD_INT_CTRL, 0);
@@ -225,12 +222,9 @@ static void hdp_disable(struct hdmi_connector
*hdmi_connector)
 	if (ret)
 		dev_warn(dev, "pinctrl state chg failed: %d\n", ret);

-	for (i = 0; i < config->hpd_reg_cnt; i++) {
-		ret = regulator_disable(hdmi->hpd_regs[i]);
-		if (ret)
-			dev_warn(dev, "failed to disable hpd regulator: %s (%d)\n",
-					config->hpd_reg_names[i], ret);
-	}
+	ret = regulator_bulk_disable(config->hpd_reg_cnt, hdmi->hpd_regs);
+	if (ret)
+		dev_warn(dev, "failed to disable hpd regulator: %d\n", ret);
 }

 static void
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_phy.c
b/drivers/gpu/drm/msm/hdmi/hdmi_phy.c
index 8a38d4b95102..16b0e8836d27 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_phy.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_phy.c
@@ -23,22 +23,15 @@ static int msm_hdmi_phy_resource_init(struct hdmi_phy *phy) 
 	if (!phy->clks)
 		return -ENOMEM;

-	for (i = 0; i < cfg->num_regs; i++) {
-		struct regulator *reg;
-
-		reg = devm_regulator_get(dev, cfg->reg_names[i]);
-		if (IS_ERR(reg)) {
-			ret = PTR_ERR(reg);
-			if (ret != -EPROBE_DEFER) {
-				DRM_DEV_ERROR(dev,
-					      "failed to get phy regulator: %s (%d)\n",
-					      cfg->reg_names[i], ret);
-			}
+	for (i = 0; i < cfg->num_regs; i++)
+		phy->regs[i].supply = cfg->reg_names[i];

-			return ret;
-		}
+	ret = devm_regulator_bulk_get(dev, cfg->num_regs, phy->regs);
+	if (ret) {
+		if (ret != -EPROBE_DEFER)
+			DRM_DEV_ERROR(dev, "failed to get phy regulators: %d\n", ret);

-		phy->regs[i] = reg;
+		return ret;
 	}

 	for (i = 0; i < cfg->num_clks; i++) {
@@ -66,11 +59,10 @@ int msm_hdmi_phy_resource_enable(struct hdmi_phy *phy) 

 	pm_runtime_get_sync(dev);

-	for (i = 0; i < cfg->num_regs; i++) {
-		ret = regulator_enable(phy->regs[i]);
-		if (ret)
-			DRM_DEV_ERROR(dev, "failed to enable regulator: %s (%d)\n",
-				cfg->reg_names[i], ret);
+	ret = regulator_bulk_enable(cfg->num_regs, phy->regs);
+	if (ret) {
+		DRM_DEV_ERROR(dev, "failed to enable regulators: (%d)\n", ret);
+		return ret;
 	}

 	for (i = 0; i < cfg->num_clks; i++) {
@@ -92,8 +84,7 @@ void msm_hdmi_phy_resource_disable(struct hdmi_phy *phy) 
 	for (i = cfg->num_clks - 1; i >= 0; i--)
 		clk_disable_unprepare(phy->clks[i]);

-	for (i = cfg->num_regs - 1; i >= 0; i--)
-		regulator_disable(phy->regs[i]);
+	regulator_bulk_disable(cfg->num_regs, phy->regs);

 	pm_runtime_put_sync(dev);
 }
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