| Message ID | 2297963.iMSNqyfSUx@phil (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Heiko, Am Dienstag, den 10.03.2015, 00:22 +0100 schrieb Heiko Stuebner: > diff --git a/Documentation/devicetree/bindings/drm/bridge/dw_hdmi.txt b/Documentation/devicetree/bindings/drm/bridge/dw_hdmi.txt > index a905c14..bb74640 100644 > --- a/Documentation/devicetree/bindings/drm/bridge/dw_hdmi.txt > +++ b/Documentation/devicetree/bindings/drm/bridge/dw_hdmi.txt > @@ -22,6 +22,11 @@ Optional properties > - ddc-i2c-bus: phandle of an I2C controller used for DDC EDID probing > - clocks, clock-names: phandle to the HDMI CEC clock, name should be "cec" > > +Supplies: "Optional supplies:" ? It seems to be common to always state optional or required for the properties. > +rockchip,rk3288-dw-hdmi handles two optional power supplies: > +- avdd1v0-supply: 1.0V power supply > +- avdd1v8-supply: 1.8V power supply > + > Example: > hdmi: hdmi@0120000 { > compatible = "fsl,imx6q-hdmi"; > diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c > index cd6a706..9f8999d 100644 > --- a/drivers/gpu/drm/bridge/dw_hdmi.c > +++ b/drivers/gpu/drm/bridge/dw_hdmi.c > @@ -17,6 +17,7 @@ > #include <linux/clk.h> > #include <linux/hdmi.h> > #include <linux/of_device.h> > +#include <linux/regulator/consumer.h> > > #include <drm/drm_of.h> > #include <drm/drmP.h> > @@ -114,6 +115,9 @@ struct dw_hdmi { > struct hdmi_data_info hdmi_data; > const struct dw_hdmi_plat_data *plat_data; > Superfluous empty line. > + struct regulator_bulk_data *supplies; > + int nsupplies; > + > int vic; > > u8 edid[HDMI_EDID_LEN]; > @@ -879,6 +883,12 @@ static int dw_hdmi_phy_init(struct dw_hdmi *hdmi) > int i, ret; > bool cscon = false; > > + if (hdmi->nsupplies > 0) { > + ret = regulator_bulk_enable(hdmi->nsupplies, hdmi->supplies); > + if (ret) > + return ret; > + } > + Are these really supplies to the PHY or is this just a convenient place to enable them? Looking at the i.MX6 docs, I suppose yes. > /*check csc whether needed activated in HDMI mode */ > cscon = (is_color_space_conversion(hdmi) && > !hdmi->hdmi_data.video_mode.mdvi); > @@ -1105,6 +1115,9 @@ static void dw_hdmi_phy_disable(struct dw_hdmi *hdmi) > dw_hdmi_phy_enable_tmds(hdmi, 0); > dw_hdmi_phy_enable_power(hdmi, 0); > > + if (hdmi->nsupplies > 0) > + regulator_bulk_disable(hdmi->nsupplies, hdmi->supplies); > + > hdmi->phy_enabled = false; > } > > @@ -1549,7 +1562,8 @@ static int dw_hdmi_register(struct drm_device *drm, struct dw_hdmi *hdmi) > int dw_hdmi_bind(struct device *dev, struct device *master, > void *data, struct drm_encoder *encoder, > struct resource *iores, int irq, > - const struct dw_hdmi_plat_data *plat_data) > + const struct dw_hdmi_plat_data *plat_data, > + struct regulator_bulk_data *supplies, int nsupplies) I'm not sure I like this function sprouting so many parameters. Is there a good reason not to add this to struct dw_hdmi_plat_data? > { > struct drm_device *drm = data; > struct device_node *np = dev->of_node; > @@ -1602,6 +1616,17 @@ int dw_hdmi_bind(struct device *dev, struct device *master, > if (IS_ERR(hdmi->regs)) > return PTR_ERR(hdmi->regs); > > + if (nsupplies > 0) { > + ret = devm_regulator_bulk_get(hdmi->dev, nsupplies, supplies); > + if (ret == -EPROBE_DEFER) > + return ret; > + if (ret) > + nsupplies = 0; > + } > + > + hdmi->supplies = supplies; > + hdmi->nsupplies = nsupplies; > + > hdmi->isfr_clk = devm_clk_get(hdmi->dev, "isfr"); > if (IS_ERR(hdmi->isfr_clk)) { > ret = PTR_ERR(hdmi->isfr_clk); > diff --git a/drivers/gpu/drm/imx/dw_hdmi-imx.c b/drivers/gpu/drm/imx/dw_hdmi-imx.c > index 121d30c..153e259 100644 > --- a/drivers/gpu/drm/imx/dw_hdmi-imx.c > +++ b/drivers/gpu/drm/imx/dw_hdmi-imx.c > @@ -214,7 +214,8 @@ static int dw_hdmi_imx_bind(struct device *dev, struct device *master, > drm_encoder_init(drm, encoder, &dw_hdmi_imx_encoder_funcs, > DRM_MODE_ENCODER_TMDS); > > - return dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data); > + return dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data, > + NULL, 0); > } > > static void dw_hdmi_imx_unbind(struct device *dev, struct device *master, > diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c > index d236faa..c085e88 100644 > --- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c > +++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c > @@ -11,6 +11,7 @@ > #include <linux/platform_device.h> > #include <linux/mfd/syscon.h> > #include <linux/regmap.h> > +#include <linux/regulator/consumer.h> > #include <drm/drm_of.h> > #include <drm/drmP.h> > #include <drm/drm_crtc_helper.h> > @@ -24,6 +25,8 @@ > #define GRF_SOC_CON6 0x025c > #define HDMI_SEL_VOP_LIT (1 << 4) > > +#define HDMI_NUM_REGULATORS 2 > + > struct rockchip_hdmi { > struct device *dev; > struct regmap *regmap; > @@ -248,6 +251,7 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, > struct platform_device *pdev = to_platform_device(dev); > const struct dw_hdmi_plat_data *plat_data; > const struct of_device_id *match; > + struct regulator_bulk_data *supplies; > struct drm_device *drm = data; > struct drm_encoder *encoder; > struct rockchip_hdmi *hdmi; > @@ -275,6 +279,14 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, > if (!iores) > return -ENXIO; > > + supplies = devm_kcalloc(&pdev->dev, HDMI_NUM_REGULATORS, > + sizeof(*supplies), GFP_KERNEL); > + if (!supplies) > + return -ENOMEM; > + > + supplies[0].supply = "avdd1v0"; > + supplies[1].supply = "avdd1v8"; > + > platform_set_drvdata(pdev, hdmi); > > encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node); > @@ -297,7 +309,8 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, > drm_encoder_init(drm, encoder, &dw_hdmi_rockchip_encoder_funcs, > DRM_MODE_ENCODER_TMDS); > > - return dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data); > + return dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data, > + supplies, HDMI_NUM_REGULATORS); > } > > static void dw_hdmi_rockchip_unbind(struct device *dev, struct device *master, > diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h > index 5a4f490..7b0fac5 100644 > --- a/include/drm/bridge/dw_hdmi.h > +++ b/include/drm/bridge/dw_hdmi.h > @@ -57,5 +57,6 @@ void dw_hdmi_unbind(struct device *dev, struct device *master, void *data); > int dw_hdmi_bind(struct device *dev, struct device *master, > void *data, struct drm_encoder *encoder, > struct resource *iores, int irq, > - const struct dw_hdmi_plat_data *plat_data); > + const struct dw_hdmi_plat_data *plat_data, > + struct regulator_bulk_data *supplies, int nsupplies); > #endif /* __IMX_HDMI_H__ */ regards Philipp
Hi Philipp, Am Dienstag, 10. März 2015, 10:16:53 schrieb Philipp Zabel: [cut the obvious stuff I need to fix] > Am Dienstag, den 10.03.2015, 00:22 +0100 schrieb Heiko Stuebner: > > @@ -879,6 +883,12 @@ static int dw_hdmi_phy_init(struct dw_hdmi *hdmi) > > > > int i, ret; > > bool cscon = false; > > > > + if (hdmi->nsupplies > 0) { > > + ret = regulator_bulk_enable(hdmi->nsupplies, hdmi->supplies); > > + if (ret) > > + return ret; > > + } > > + > > Are these really supplies to the PHY or is this just a convenient place > to enable them? Looking at the i.MX6 docs, I suppose yes. According to the TRM, the supplies are "DC supply voltage for Analog part of HDMI", so I'd think phy supplies. > > > /*check csc whether needed activated in HDMI mode */ > > cscon = (is_color_space_conversion(hdmi) && > > > > !hdmi->hdmi_data.video_mode.mdvi); > > > > @@ -1105,6 +1115,9 @@ static void dw_hdmi_phy_disable(struct dw_hdmi > > *hdmi) > > > > dw_hdmi_phy_enable_tmds(hdmi, 0); > > dw_hdmi_phy_enable_power(hdmi, 0); > > > > + if (hdmi->nsupplies > 0) > > + regulator_bulk_disable(hdmi->nsupplies, hdmi->supplies); > > + > > > > hdmi->phy_enabled = false; > > > > } > > > > @@ -1549,7 +1562,8 @@ static int dw_hdmi_register(struct drm_device *drm, > > struct dw_hdmi *hdmi)> > > int dw_hdmi_bind(struct device *dev, struct device *master, > > > > void *data, struct drm_encoder *encoder, > > struct resource *iores, int irq, > > > > - const struct dw_hdmi_plat_data *plat_data) > > + const struct dw_hdmi_plat_data *plat_data, > > + struct regulator_bulk_data *supplies, int nsupplies) > > I'm not sure I like this function sprouting so many parameters. Is there > a good reason not to add this to struct dw_hdmi_plat_data? Nope, moving this to platdata sound sensible and I'll give this a try :-) Heiko
diff --git a/Documentation/devicetree/bindings/drm/bridge/dw_hdmi.txt b/Documentation/devicetree/bindings/drm/bridge/dw_hdmi.txt index a905c14..bb74640 100644 --- a/Documentation/devicetree/bindings/drm/bridge/dw_hdmi.txt +++ b/Documentation/devicetree/bindings/drm/bridge/dw_hdmi.txt @@ -22,6 +22,11 @@ Optional properties - ddc-i2c-bus: phandle of an I2C controller used for DDC EDID probing - clocks, clock-names: phandle to the HDMI CEC clock, name should be "cec" +Supplies: +rockchip,rk3288-dw-hdmi handles two optional power supplies: +- avdd1v0-supply: 1.0V power supply +- avdd1v8-supply: 1.8V power supply + Example: hdmi: hdmi@0120000 { compatible = "fsl,imx6q-hdmi"; diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c index cd6a706..9f8999d 100644 --- a/drivers/gpu/drm/bridge/dw_hdmi.c +++ b/drivers/gpu/drm/bridge/dw_hdmi.c @@ -17,6 +17,7 @@ #include <linux/clk.h> #include <linux/hdmi.h> #include <linux/of_device.h> +#include <linux/regulator/consumer.h> #include <drm/drm_of.h> #include <drm/drmP.h> @@ -114,6 +115,9 @@ struct dw_hdmi { struct hdmi_data_info hdmi_data; const struct dw_hdmi_plat_data *plat_data; + struct regulator_bulk_data *supplies; + int nsupplies; + int vic; u8 edid[HDMI_EDID_LEN]; @@ -879,6 +883,12 @@ static int dw_hdmi_phy_init(struct dw_hdmi *hdmi) int i, ret; bool cscon = false; + if (hdmi->nsupplies > 0) { + ret = regulator_bulk_enable(hdmi->nsupplies, hdmi->supplies); + if (ret) + return ret; + } + /*check csc whether needed activated in HDMI mode */ cscon = (is_color_space_conversion(hdmi) && !hdmi->hdmi_data.video_mode.mdvi); @@ -1105,6 +1115,9 @@ static void dw_hdmi_phy_disable(struct dw_hdmi *hdmi) dw_hdmi_phy_enable_tmds(hdmi, 0); dw_hdmi_phy_enable_power(hdmi, 0); + if (hdmi->nsupplies > 0) + regulator_bulk_disable(hdmi->nsupplies, hdmi->supplies); + hdmi->phy_enabled = false; } @@ -1549,7 +1562,8 @@ static int dw_hdmi_register(struct drm_device *drm, struct dw_hdmi *hdmi) int dw_hdmi_bind(struct device *dev, struct device *master, void *data, struct drm_encoder *encoder, struct resource *iores, int irq, - const struct dw_hdmi_plat_data *plat_data) + const struct dw_hdmi_plat_data *plat_data, + struct regulator_bulk_data *supplies, int nsupplies) { struct drm_device *drm = data; struct device_node *np = dev->of_node; @@ -1602,6 +1616,17 @@ int dw_hdmi_bind(struct device *dev, struct device *master, if (IS_ERR(hdmi->regs)) return PTR_ERR(hdmi->regs); + if (nsupplies > 0) { + ret = devm_regulator_bulk_get(hdmi->dev, nsupplies, supplies); + if (ret == -EPROBE_DEFER) + return ret; + if (ret) + nsupplies = 0; + } + + hdmi->supplies = supplies; + hdmi->nsupplies = nsupplies; + hdmi->isfr_clk = devm_clk_get(hdmi->dev, "isfr"); if (IS_ERR(hdmi->isfr_clk)) { ret = PTR_ERR(hdmi->isfr_clk); diff --git a/drivers/gpu/drm/imx/dw_hdmi-imx.c b/drivers/gpu/drm/imx/dw_hdmi-imx.c index 121d30c..153e259 100644 --- a/drivers/gpu/drm/imx/dw_hdmi-imx.c +++ b/drivers/gpu/drm/imx/dw_hdmi-imx.c @@ -214,7 +214,8 @@ static int dw_hdmi_imx_bind(struct device *dev, struct device *master, drm_encoder_init(drm, encoder, &dw_hdmi_imx_encoder_funcs, DRM_MODE_ENCODER_TMDS); - return dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data); + return dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data, + NULL, 0); } static void dw_hdmi_imx_unbind(struct device *dev, struct device *master, diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c index d236faa..c085e88 100644 --- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c @@ -11,6 +11,7 @@ #include <linux/platform_device.h> #include <linux/mfd/syscon.h> #include <linux/regmap.h> +#include <linux/regulator/consumer.h> #include <drm/drm_of.h> #include <drm/drmP.h> #include <drm/drm_crtc_helper.h> @@ -24,6 +25,8 @@ #define GRF_SOC_CON6 0x025c #define HDMI_SEL_VOP_LIT (1 << 4) +#define HDMI_NUM_REGULATORS 2 + struct rockchip_hdmi { struct device *dev; struct regmap *regmap; @@ -248,6 +251,7 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, struct platform_device *pdev = to_platform_device(dev); const struct dw_hdmi_plat_data *plat_data; const struct of_device_id *match; + struct regulator_bulk_data *supplies; struct drm_device *drm = data; struct drm_encoder *encoder; struct rockchip_hdmi *hdmi; @@ -275,6 +279,14 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, if (!iores) return -ENXIO; + supplies = devm_kcalloc(&pdev->dev, HDMI_NUM_REGULATORS, + sizeof(*supplies), GFP_KERNEL); + if (!supplies) + return -ENOMEM; + + supplies[0].supply = "avdd1v0"; + supplies[1].supply = "avdd1v8"; + platform_set_drvdata(pdev, hdmi); encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node); @@ -297,7 +309,8 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, drm_encoder_init(drm, encoder, &dw_hdmi_rockchip_encoder_funcs, DRM_MODE_ENCODER_TMDS); - return dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data); + return dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data, + supplies, HDMI_NUM_REGULATORS); } static void dw_hdmi_rockchip_unbind(struct device *dev, struct device *master, diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h index 5a4f490..7b0fac5 100644 --- a/include/drm/bridge/dw_hdmi.h +++ b/include/drm/bridge/dw_hdmi.h @@ -57,5 +57,6 @@ void dw_hdmi_unbind(struct device *dev, struct device *master, void *data); int dw_hdmi_bind(struct device *dev, struct device *master, void *data, struct drm_encoder *encoder, struct resource *iores, int irq, - const struct dw_hdmi_plat_data *plat_data); + const struct dw_hdmi_plat_data *plat_data, + struct regulator_bulk_data *supplies, int nsupplies); #endif /* __IMX_HDMI_H__ */
At least the Rockchip variant of the dw_hdmi can have controllable power supplies providing 1.0 and 1.8V. Therefore add the possibility for the generic bridge driver to enable supplies provided by the hw-specific drivers. Signed-off-by: Heiko Stuebner <heiko@sntech.de> --- .../devicetree/bindings/drm/bridge/dw_hdmi.txt | 5 ++++ drivers/gpu/drm/bridge/dw_hdmi.c | 27 +++++++++++++++++++++- drivers/gpu/drm/imx/dw_hdmi-imx.c | 3 ++- drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 15 +++++++++++- include/drm/bridge/dw_hdmi.h | 3 ++- 5 files changed, 49 insertions(+), 4 deletions(-)