lede/target/linux/rockchip/patches-5.18/234-drm-rockchip-dw_hdmi-add-regulator-support.patch

107 lines
2.8 KiB
Diff

From 414fe5e5ddd91f3977617464c09a6af04e3d38ae Mon Sep 17 00:00:00 2001
From: Sascha Hauer <s.hauer@pengutronix.de>
Date: Fri, 8 Apr 2022 13:22:23 +0200
Subject: [PATCH 34/50] drm/rockchip: dw_hdmi: add regulator support
The RK3568 has HDMI_TX_AVDD0V9 and HDMI_TX_AVDD_1V8 supply inputs needed
for the HDMI port. add support for these to the driver for boards which
have them supplied by switchable regulators.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
---
drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 41 +++++++++++++++++++--
1 file changed, 38 insertions(+), 3 deletions(-)
--- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
@@ -9,6 +9,7 @@
#include <linux/platform_device.h>
#include <linux/phy/phy.h>
#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
#include <drm/bridge/dw_hdmi.h>
#include <drm/drm_edid.h>
@@ -76,6 +77,8 @@ struct rockchip_hdmi {
struct clk *ref_clk;
struct clk *grf_clk;
struct dw_hdmi *hdmi;
+ struct regulator *avdd_0v9;
+ struct regulator *avdd_1v8;
struct phy *phy;
};
@@ -226,6 +229,14 @@ static int rockchip_hdmi_parse_dt(struct
return PTR_ERR(hdmi->grf_clk);
}
+ hdmi->avdd_0v9 = devm_regulator_get(hdmi->dev, "avdd-0v9");
+ if (IS_ERR(hdmi->avdd_0v9))
+ return PTR_ERR(hdmi->avdd_0v9);
+
+ hdmi->avdd_1v8 = devm_regulator_get(hdmi->dev, "avdd-1v8");
+ if (IS_ERR(hdmi->avdd_1v8))
+ return PTR_ERR(hdmi->avdd_1v8);
+
return 0;
}
@@ -566,11 +577,23 @@ static int dw_hdmi_rockchip_bind(struct
return ret;
}
+ ret = regulator_enable(hdmi->avdd_0v9);
+ if (ret) {
+ DRM_DEV_ERROR(hdmi->dev, "failed to enable avdd0v9: %d\n", ret);
+ goto err_avdd_0v9;
+ }
+
+ ret = regulator_enable(hdmi->avdd_1v8);
+ if (ret) {
+ DRM_DEV_ERROR(hdmi->dev, "failed to enable avdd1v8: %d\n", ret);
+ goto err_avdd_1v8;
+ }
+
ret = clk_prepare_enable(hdmi->ref_clk);
if (ret) {
DRM_DEV_ERROR(hdmi->dev, "Failed to enable HDMI reference clock: %d\n",
ret);
- return ret;
+ goto err_clk;
}
if (hdmi->chip_data == &rk3568_chip_data) {
@@ -594,10 +617,19 @@ static int dw_hdmi_rockchip_bind(struct
*/
if (IS_ERR(hdmi->hdmi)) {
ret = PTR_ERR(hdmi->hdmi);
- drm_encoder_cleanup(encoder);
- clk_disable_unprepare(hdmi->ref_clk);
+ goto err_bind;
}
+ return 0;
+
+err_bind:
+ clk_disable_unprepare(hdmi->ref_clk);
+ drm_encoder_cleanup(encoder);
+err_clk:
+ regulator_disable(hdmi->avdd_1v8);
+err_avdd_1v8:
+ regulator_disable(hdmi->avdd_0v9);
+err_avdd_0v9:
return ret;
}
@@ -608,6 +640,9 @@ static void dw_hdmi_rockchip_unbind(stru
dw_hdmi_unbind(hdmi->hdmi);
clk_disable_unprepare(hdmi->ref_clk);
+
+ regulator_disable(hdmi->avdd_1v8);
+ regulator_disable(hdmi->avdd_0v9);
}
static const struct component_ops dw_hdmi_rockchip_ops = {