| Message ID | 20211117143347.314294-5-s.hauer@pengutronix.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/rockchip: RK356x VOP2 support | expand |
On Wed, Nov 17, 2021 at 03:33:39PM +0100, Sascha Hauer wrote: > 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> > --- > .../display/rockchip/rockchip,dw-hdmi.yaml | 6 ++ Bindings should be a separate patch. Include this as part of adding RK3568 support to the binding. > drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 58 ++++++++++++++++++- > 2 files changed, 61 insertions(+), 3 deletions(-) > > diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml b/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml > index 53fa42479d5b7..293b2cfbf739f 100644 > --- a/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml > +++ b/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml > @@ -28,6 +28,12 @@ properties: > reg-io-width: > const: 4 > > + avdd-0v9-supply: > + description: A 0.9V supply that powers up the SoC internal circuitry. > + > + avdd-1v8-supply: > + description: A 0.9V supply that powers up the SoC internal circuitry. 0.9V ??? > + > clocks: > minItems: 2 > items:
On 2021-11-17 14:33, Sascha Hauer wrote: > 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> > --- > .../display/rockchip/rockchip,dw-hdmi.yaml | 6 ++ > drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 58 ++++++++++++++++++- > 2 files changed, 61 insertions(+), 3 deletions(-) > > diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml b/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml > index 53fa42479d5b7..293b2cfbf739f 100644 > --- a/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml > +++ b/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml > @@ -28,6 +28,12 @@ properties: > reg-io-width: > const: 4 > > + avdd-0v9-supply: > + description: A 0.9V supply that powers up the SoC internal circuitry. > + > + avdd-1v8-supply: > + description: A 0.9V supply that powers up the SoC internal circuitry. > + > clocks: > minItems: 2 > items: > diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c > index 29608c25e2d0e..b8fe56c89cdc9 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> > @@ -83,6 +84,8 @@ struct rockchip_hdmi { > struct clk *vpll_clk; > struct clk *grf_clk; > struct dw_hdmi *hdmi; > + struct regulator *avdd_0v9; > + struct regulator *avdd_1v8; > struct phy *phy; > }; > > @@ -222,6 +225,22 @@ static int rockchip_hdmi_parse_dt(struct rockchip_hdmi *hdmi) > hdmi->vpll_clk = hdmi->clks[RK_HDMI_CLK_VPLL].clk; > hdmi->grf_clk = hdmi->clks[RK_HDMI_CLK_GRF].clk; > > + hdmi->avdd_0v9 = devm_regulator_get_optional(hdmi->dev, "avdd-0v9"); These are clearly *not* optional, unless the HDMI block is magic and can still work without physical power. Use devm_regulator_get(), and if the real supply is missing from the DT for whatever reason you should get a dummy regulator back, which you can then successfully disable and enable without all the conditional mess. Robin. > + if (IS_ERR(hdmi->avdd_0v9)) { > + if (PTR_ERR(hdmi->avdd_0v9) != -ENODEV) > + return PTR_ERR(hdmi->avdd_0v9); > + > + hdmi->avdd_0v9 = NULL; > + } > + > + hdmi->avdd_1v8 = devm_regulator_get_optional(hdmi->dev, "avdd-1v8"); > + if (IS_ERR(hdmi->avdd_1v8)) { > + if (PTR_ERR(hdmi->avdd_1v8) != -ENODEV) > + return PTR_ERR(hdmi->avdd_1v8); > + > + hdmi->avdd_1v8 = NULL; > + } > + > return 0; > } > > @@ -559,11 +578,27 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, > return ret; > } > > + if (hdmi->avdd_0v9) { > + ret = regulator_enable(hdmi->avdd_0v9); > + if (ret) { > + DRM_DEV_ERROR(hdmi->dev, "failed to enable avdd0v9: %d\n", ret); > + goto err_avdd_0v9; > + } > + } > + > + if (hdmi->avdd_1v8) { > + 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_bulk_prepare_enable(RK_HDMI_NCLOCKS_HDMI, hdmi->clks); > if (ret) { > DRM_DEV_ERROR(hdmi->dev, "Failed to enable HDMI vpll: %d\n", > ret); > - return ret; > + goto err_clk; > } > > if (hdmi->chip_data == &rk3568_chip_data) { > @@ -587,10 +622,21 @@ 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_bulk_disable_unprepare(RK_HDMI_NCLOCKS_HDMI, hdmi->clks); > + goto err_bind; > } > > + return 0; > + > +err_bind: > + clk_bulk_disable_unprepare(RK_HDMI_NCLOCKS_HDMI, hdmi->clks); > + drm_encoder_cleanup(encoder); > +err_clk: > + if (hdmi->avdd_1v8) > + regulator_disable(hdmi->avdd_1v8); > +err_avdd_1v8: > + if (hdmi->avdd_0v9) > + regulator_disable(hdmi->avdd_0v9); > +err_avdd_0v9: > return ret; > } > > @@ -601,6 +647,12 @@ static void dw_hdmi_rockchip_unbind(struct device *dev, struct device *master, > > dw_hdmi_unbind(hdmi->hdmi); > clk_bulk_disable_unprepare(RK_HDMI_NCLOCKS_HDMI, hdmi->clks); > + > + if (hdmi->avdd_1v8) > + regulator_disable(hdmi->avdd_1v8); > + > + if (hdmi->avdd_0v9) > + regulator_disable(hdmi->avdd_0v9); > } > > static const struct component_ops dw_hdmi_rockchip_ops = { >
diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml b/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml index 53fa42479d5b7..293b2cfbf739f 100644 --- a/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml +++ b/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml @@ -28,6 +28,12 @@ properties: reg-io-width: const: 4 + avdd-0v9-supply: + description: A 0.9V supply that powers up the SoC internal circuitry. + + avdd-1v8-supply: + description: A 0.9V supply that powers up the SoC internal circuitry. + clocks: minItems: 2 items: diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c index 29608c25e2d0e..b8fe56c89cdc9 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> @@ -83,6 +84,8 @@ struct rockchip_hdmi { struct clk *vpll_clk; struct clk *grf_clk; struct dw_hdmi *hdmi; + struct regulator *avdd_0v9; + struct regulator *avdd_1v8; struct phy *phy; }; @@ -222,6 +225,22 @@ static int rockchip_hdmi_parse_dt(struct rockchip_hdmi *hdmi) hdmi->vpll_clk = hdmi->clks[RK_HDMI_CLK_VPLL].clk; hdmi->grf_clk = hdmi->clks[RK_HDMI_CLK_GRF].clk; + hdmi->avdd_0v9 = devm_regulator_get_optional(hdmi->dev, "avdd-0v9"); + if (IS_ERR(hdmi->avdd_0v9)) { + if (PTR_ERR(hdmi->avdd_0v9) != -ENODEV) + return PTR_ERR(hdmi->avdd_0v9); + + hdmi->avdd_0v9 = NULL; + } + + hdmi->avdd_1v8 = devm_regulator_get_optional(hdmi->dev, "avdd-1v8"); + if (IS_ERR(hdmi->avdd_1v8)) { + if (PTR_ERR(hdmi->avdd_1v8) != -ENODEV) + return PTR_ERR(hdmi->avdd_1v8); + + hdmi->avdd_1v8 = NULL; + } + return 0; } @@ -559,11 +578,27 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, return ret; } + if (hdmi->avdd_0v9) { + ret = regulator_enable(hdmi->avdd_0v9); + if (ret) { + DRM_DEV_ERROR(hdmi->dev, "failed to enable avdd0v9: %d\n", ret); + goto err_avdd_0v9; + } + } + + if (hdmi->avdd_1v8) { + 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_bulk_prepare_enable(RK_HDMI_NCLOCKS_HDMI, hdmi->clks); if (ret) { DRM_DEV_ERROR(hdmi->dev, "Failed to enable HDMI vpll: %d\n", ret); - return ret; + goto err_clk; } if (hdmi->chip_data == &rk3568_chip_data) { @@ -587,10 +622,21 @@ 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_bulk_disable_unprepare(RK_HDMI_NCLOCKS_HDMI, hdmi->clks); + goto err_bind; } + return 0; + +err_bind: + clk_bulk_disable_unprepare(RK_HDMI_NCLOCKS_HDMI, hdmi->clks); + drm_encoder_cleanup(encoder); +err_clk: + if (hdmi->avdd_1v8) + regulator_disable(hdmi->avdd_1v8); +err_avdd_1v8: + if (hdmi->avdd_0v9) + regulator_disable(hdmi->avdd_0v9); +err_avdd_0v9: return ret; } @@ -601,6 +647,12 @@ static void dw_hdmi_rockchip_unbind(struct device *dev, struct device *master, dw_hdmi_unbind(hdmi->hdmi); clk_bulk_disable_unprepare(RK_HDMI_NCLOCKS_HDMI, hdmi->clks); + + if (hdmi->avdd_1v8) + regulator_disable(hdmi->avdd_1v8); + + if (hdmi->avdd_0v9) + regulator_disable(hdmi->avdd_0v9); } static const struct component_ops dw_hdmi_rockchip_ops = {
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> --- .../display/rockchip/rockchip,dw-hdmi.yaml | 6 ++ drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 58 ++++++++++++++++++- 2 files changed, 61 insertions(+), 3 deletions(-)