Re: [PATCH v2 06/14] drm/msm/hdmi: switch to clk_bulk API

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On 5/22/2024 3:50 AM, Dmitry Baryshkov wrote:
The last platform using legacy clock names for HDMI block (APQ8064)
switched to new clock names in 5.16. It's time to stop caring about old
DT, drop hand-coded helpers and switch to clk_bulk_* API.

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

Reviewed-by: Jessica Zhang <quic_jesszhan@xxxxxxxxxxx>

---
  drivers/gpu/drm/msm/hdmi/hdmi.c     | 15 +++++---------
  drivers/gpu/drm/msm/hdmi/hdmi.h     |  2 +-
  drivers/gpu/drm/msm/hdmi/hdmi_hpd.c | 39 +++++++++++++------------------------
  3 files changed, 19 insertions(+), 37 deletions(-)

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
index c14e009f38b1..7ec4ca3b7597 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
@@ -469,17 +469,12 @@ static int msm_hdmi_dev_probe(struct platform_device *pdev)
  	if (!hdmi->hpd_clks)
  		return -ENOMEM;
- for (i = 0; i < config->hpd_clk_cnt; i++) {
-		struct clk *clk;
+	for (i = 0; i < config->hpd_clk_cnt; i++)
+		hdmi->hpd_clks[i].id = config->hpd_clk_names[i];
- clk = msm_clk_get(pdev, config->hpd_clk_names[i]);
-		if (IS_ERR(clk))
-			return dev_err_probe(dev, PTR_ERR(clk),
-					     "failed to get hpd clk: %s\n",
-					     config->hpd_clk_names[i]);
-
-		hdmi->hpd_clks[i] = clk;
-	}
+	ret = devm_clk_bulk_get(&pdev->dev, config->hpd_clk_cnt, hdmi->hpd_clks);
+	if (ret)
+		return ret;
hdmi->extp_clk = devm_clk_get_optional(&pdev->dev, "extp");
  	if (IS_ERR(hdmi->extp_clk))
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h b/drivers/gpu/drm/msm/hdmi/hdmi.h
index c0d60ed23b75..eeba85ffef09 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.h
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.h
@@ -50,7 +50,7 @@ struct hdmi {
struct regulator_bulk_data *hpd_regs;
  	struct regulator_bulk_data *pwr_regs;
-	struct clk **hpd_clks;
+	struct clk_bulk_data *hpd_clks;
  	struct clk *extp_clk;
struct gpio_desc *hpd_gpiod;
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c b/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
index 7ae69b14e953..36266aa626dc 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
@@ -60,27 +60,6 @@ static void msm_hdmi_phy_reset(struct hdmi *hdmi)
  	}
  }
-static void enable_hpd_clocks(struct hdmi *hdmi, bool enable)
-{
-	const struct hdmi_platform_config *config = hdmi->config;
-	struct device *dev = &hdmi->pdev->dev;
-	int i, ret;
-
-	if (enable) {
-		for (i = 0; i < config->hpd_clk_cnt; i++) {
-			ret = clk_prepare_enable(hdmi->hpd_clks[i]);
-			if (ret) {
-				DRM_DEV_ERROR(dev,
-					"failed to enable hpd clk: %s (%d)\n",
-					config->hpd_clk_names[i], ret);
-			}
-		}
-	} else {
-		for (i = config->hpd_clk_cnt - 1; i >= 0; i--)
-			clk_disable_unprepare(hdmi->hpd_clks[i]);
-	}
-}
-
  int msm_hdmi_hpd_enable(struct drm_bridge *bridge)
  {
  	struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
@@ -107,7 +86,9 @@ int msm_hdmi_hpd_enable(struct drm_bridge *bridge)
  		gpiod_set_value_cansleep(hdmi->hpd_gpiod, 1);
pm_runtime_get_sync(dev);
-	enable_hpd_clocks(hdmi, true);
+	ret = clk_bulk_prepare_enable(config->hpd_clk_cnt, hdmi->hpd_clks);
+	if (ret)
+		goto fail;
msm_hdmi_set_mode(hdmi, false);
  	msm_hdmi_phy_reset(hdmi);
@@ -149,7 +130,7 @@ void msm_hdmi_hpd_disable(struct hdmi *hdmi)
msm_hdmi_set_mode(hdmi, false); - enable_hpd_clocks(hdmi, false);
+	clk_bulk_disable_unprepare(config->hpd_clk_cnt, hdmi->hpd_clks);
  	pm_runtime_put(dev);
ret = pinctrl_pm_select_sleep_state(dev);
@@ -193,14 +174,20 @@ void msm_hdmi_hpd_irq(struct drm_bridge *bridge)
static enum drm_connector_status detect_reg(struct hdmi *hdmi)
  {
-	uint32_t hpd_int_status;
+	const struct hdmi_platform_config *config = hdmi->config;
+	uint32_t hpd_int_status = 0;
+	int ret;
pm_runtime_get_sync(&hdmi->pdev->dev);
-	enable_hpd_clocks(hdmi, true);
+	ret = clk_bulk_prepare_enable(config->hpd_clk_cnt, hdmi->hpd_clks);
+	if (ret)
+		goto out;
hpd_int_status = hdmi_read(hdmi, REG_HDMI_HPD_INT_STATUS); - enable_hpd_clocks(hdmi, false);
+	clk_bulk_disable_unprepare(config->hpd_clk_cnt, hdmi->hpd_clks);
+
+out:
  	pm_runtime_put(&hdmi->pdev->dev);
return (hpd_int_status & HDMI_HPD_INT_STATUS_CABLE_DETECTED) ?

--
2.39.2




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