diff options
| author | Sascha Hauer <s.hauer@pengutronix.de> | 2022-04-22 09:28:26 +0200 |
|---|---|---|
| committer | Heiko Stuebner <heiko@sntech.de> | 2022-05-03 12:56:05 +0200 |
| commit | ca80c4eb4b01a7f1c2f333d0a329937ef9c7f03a (patch) | |
| tree | e1b460a8544d3e76e9aac430ab02f009ce9996da /drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | |
| parent | 80266ccb864b6443fd0bf54bb17444d2632fad21 (diff) | |
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>
Tested-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220422072841.2206452-10-s.hauer@pengutronix.de
Diffstat (limited to 'drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c')
| -rw-r--r-- | drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 41 |
1 files changed, 38 insertions, 3 deletions
diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c index b64cc62c7b5a..c14f88893868 100644 --- 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 rockchip_hdmi *hdmi) 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 device *dev, struct device *master, 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 device *dev, struct device *master, */ 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: + drm_encoder_cleanup(encoder); + clk_disable_unprepare(hdmi->ref_clk); +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(struct device *dev, struct device *master, 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 = { |