| Message ID | 002101ce73cf$ac989b70$05c9d250$@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Fri, Jun 28, 2013 at 04:18:23PM +0900, Jingoo Han wrote: > Use the generic PHY API instead of the platform callback to control > the DP PHY. The 'phy_label' field is added to the platform data > structure to allow PHY lookup on non-dt platforms. > > Signed-off-by: Jingoo Han <jg1.han@samsung.com> > --- > .../devicetree/bindings/video/exynos_dp.txt | 17 --- > drivers/video/exynos/exynos_dp_core.c | 118 ++------------------ > drivers/video/exynos/exynos_dp_core.h | 2 + > include/video/exynos_dp.h | 6 +- > 4 files changed, 15 insertions(+), 128 deletions(-) > > diff --git a/Documentation/devicetree/bindings/video/exynos_dp.txt b/Documentation/devicetree/bindings/video/exynos_dp.txt > index 84f10c1..a8320e3 100644 > --- a/Documentation/devicetree/bindings/video/exynos_dp.txt > +++ b/Documentation/devicetree/bindings/video/exynos_dp.txt > @@ -1,17 +1,6 @@ > The Exynos display port interface should be configured based on > the type of panel connected to it. > > -We use two nodes: > - -dp-controller node > - -dptx-phy node(defined inside dp-controller node) > - > -For the DP-PHY initialization, we use the dptx-phy node. > -Required properties for dptx-phy: > - -reg: > - Base address of DP PHY register. > - -samsung,enable-mask: > - The bit-mask used to enable/disable DP PHY. > - > For the Panel initialization, we read data from dp-controller node. > Required properties for dp-controller: > -compatible: > @@ -67,12 +56,6 @@ SOC specific portion: > interrupt-parent = <&combiner>; > clocks = <&clock 342>; > clock-names = "dp"; > - > - dptx-phy { > - reg = <0x10040720>; > - samsung,enable-mask = <1>; > - }; > - > }; > > Board Specific portion: > diff --git a/drivers/video/exynos/exynos_dp_core.c b/drivers/video/exynos/exynos_dp_core.c > index 12bbede..bac515b 100644 > --- a/drivers/video/exynos/exynos_dp_core.c > +++ b/drivers/video/exynos/exynos_dp_core.c > @@ -19,6 +19,7 @@ > #include <linux/interrupt.h> > #include <linux/delay.h> > #include <linux/of.h> > +#include <linux/phy/phy.h> > > #include <video/exynos_dp.h> > > @@ -960,84 +961,15 @@ static struct exynos_dp_platdata *exynos_dp_dt_parse_pdata(struct device *dev) > return ERR_PTR(-EINVAL); > } > > - return pd; > -} > - > -static int exynos_dp_dt_parse_phydata(struct exynos_dp_device *dp) > -{ > - struct device_node *dp_phy_node = of_node_get(dp->dev->of_node); > - u32 phy_base; > - int ret = 0; > - > - dp_phy_node = of_find_node_by_name(dp_phy_node, "dptx-phy"); > - if (!dp_phy_node) { > - dev_err(dp->dev, "could not find dptx-phy node\n"); > - return -ENODEV; > - } > - > - if (of_property_read_u32(dp_phy_node, "reg", &phy_base)) { > - dev_err(dp->dev, "failed to get reg for dptx-phy\n"); > - ret = -EINVAL; > - goto err; > - } > - > - if (of_property_read_u32(dp_phy_node, "samsung,enable-mask", > - &dp->enable_mask)) { > - dev_err(dp->dev, "failed to get enable-mask for dptx-phy\n"); > - ret = -EINVAL; > - goto err; > - } > - > - dp->phy_addr = ioremap(phy_base, SZ_4); > - if (!dp->phy_addr) { > - dev_err(dp->dev, "failed to ioremap dp-phy\n"); > - ret = -ENOMEM; > - goto err; > - } > - > -err: > - of_node_put(dp_phy_node); > - > - return ret; > -} > - > -static void exynos_dp_phy_init(struct exynos_dp_device *dp) > -{ > - u32 reg; > - > - reg = __raw_readl(dp->phy_addr); > - reg |= dp->enable_mask; > - __raw_writel(reg, dp->phy_addr); > -} > - > -static void exynos_dp_phy_exit(struct exynos_dp_device *dp) > -{ > - u32 reg; > + pd->phy_label = "dp"; only the label, which I would use 'display-port'. Other than that: Acked-by: Felipe Balbi <balbi@ti.com>
On 12:35 Fri 28 Jun , Felipe Balbi wrote: > On Fri, Jun 28, 2013 at 04:18:23PM +0900, Jingoo Han wrote: > > Use the generic PHY API instead of the platform callback to control > > the DP PHY. The 'phy_label' field is added to the platform data > > structure to allow PHY lookup on non-dt platforms. > > > > Signed-off-by: Jingoo Han <jg1.han@samsung.com> > > --- > > .../devicetree/bindings/video/exynos_dp.txt | 17 --- > > drivers/video/exynos/exynos_dp_core.c | 118 ++------------------ > > drivers/video/exynos/exynos_dp_core.h | 2 + > > include/video/exynos_dp.h | 6 +- > > 4 files changed, 15 insertions(+), 128 deletions(-) > > > > diff --git a/Documentation/devicetree/bindings/video/exynos_dp.txt b/Documentation/devicetree/bindings/video/exynos_dp.txt > > index 84f10c1..a8320e3 100644 > > --- a/Documentation/devicetree/bindings/video/exynos_dp.txt > > +++ b/Documentation/devicetree/bindings/video/exynos_dp.txt > > @@ -1,17 +1,6 @@ > > The Exynos display port interface should be configured based on > > the type of panel connected to it. > > > > -We use two nodes: > > - -dp-controller node > > - -dptx-phy node(defined inside dp-controller node) > > - > > -For the DP-PHY initialization, we use the dptx-phy node. > > -Required properties for dptx-phy: > > - -reg: > > - Base address of DP PHY register. > > - -samsung,enable-mask: > > - The bit-mask used to enable/disable DP PHY. > > - > > For the Panel initialization, we read data from dp-controller node. > > Required properties for dp-controller: > > -compatible: > > @@ -67,12 +56,6 @@ SOC specific portion: > > interrupt-parent = <&combiner>; > > clocks = <&clock 342>; > > clock-names = "dp"; > > - > > - dptx-phy { > > - reg = <0x10040720>; > > - samsung,enable-mask = <1>; > > - }; I've an issue here you break dt compatibilty Best Regards, J.
Hi, On 06/28/2013 12:27 PM, Jean-Christophe PLAGNIOL-VILLARD wrote: > On 12:35 Fri 28 Jun , Felipe Balbi wrote: >> > On Fri, Jun 28, 2013 at 04:18:23PM +0900, Jingoo Han wrote: >>> > > Use the generic PHY API instead of the platform callback to control >>> > > the DP PHY. The 'phy_label' field is added to the platform data >>> > > structure to allow PHY lookup on non-dt platforms. >>> > > >>> > > Signed-off-by: Jingoo Han <jg1.han@samsung.com> >>> > > --- [...] >>> > > diff --git a/Documentation/devicetree/bindings/video/exynos_dp.txt b/Documentation/devicetree/bindings/video/exynos_dp.txt >>> > > index 84f10c1..a8320e3 100644 >>> > > --- a/Documentation/devicetree/bindings/video/exynos_dp.txt >>> > > +++ b/Documentation/devicetree/bindings/video/exynos_dp.txt >>> > > @@ -1,17 +1,6 @@ >>> > > The Exynos display port interface should be configured based on >>> > > the type of panel connected to it. >>> > > >>> > > -We use two nodes: >>> > > - -dp-controller node >>> > > - -dptx-phy node(defined inside dp-controller node) >>> > > - >>> > > -For the DP-PHY initialization, we use the dptx-phy node. >>> > > -Required properties for dptx-phy: >>> > > - -reg: >>> > > - Base address of DP PHY register. >>> > > - -samsung,enable-mask: >>> > > - The bit-mask used to enable/disable DP PHY. >>> > > - >>> > > For the Panel initialization, we read data from dp-controller node. >>> > > Required properties for dp-controller: >>> > > -compatible: >>> > > @@ -67,12 +56,6 @@ SOC specific portion: >>> > > interrupt-parent = <&combiner>; >>> > > clocks = <&clock 342>; >>> > > clock-names = "dp"; >>> > > - >>> > > - dptx-phy { >>> > > - reg = <0x10040720>; >>> > > - samsung,enable-mask = <1>; >>> > > - }; > > I've an issue here you break dt compatibilty Indeed. Ideally the PHYs should be detachable from the controllers. I'd assume such a change could be acceptable, given that the driver still supports the original binding. -- Thanks, Sylwester
diff --git a/Documentation/devicetree/bindings/video/exynos_dp.txt b/Documentation/devicetree/bindings/video/exynos_dp.txt index 84f10c1..a8320e3 100644 --- a/Documentation/devicetree/bindings/video/exynos_dp.txt +++ b/Documentation/devicetree/bindings/video/exynos_dp.txt @@ -1,17 +1,6 @@ The Exynos display port interface should be configured based on the type of panel connected to it. -We use two nodes: - -dp-controller node - -dptx-phy node(defined inside dp-controller node) - -For the DP-PHY initialization, we use the dptx-phy node. -Required properties for dptx-phy: - -reg: - Base address of DP PHY register. - -samsung,enable-mask: - The bit-mask used to enable/disable DP PHY. - For the Panel initialization, we read data from dp-controller node. Required properties for dp-controller: -compatible: @@ -67,12 +56,6 @@ SOC specific portion: interrupt-parent = <&combiner>; clocks = <&clock 342>; clock-names = "dp"; - - dptx-phy { - reg = <0x10040720>; - samsung,enable-mask = <1>; - }; - }; Board Specific portion: diff --git a/drivers/video/exynos/exynos_dp_core.c b/drivers/video/exynos/exynos_dp_core.c index 12bbede..bac515b 100644 --- a/drivers/video/exynos/exynos_dp_core.c +++ b/drivers/video/exynos/exynos_dp_core.c @@ -19,6 +19,7 @@ #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/of.h> +#include <linux/phy/phy.h> #include <video/exynos_dp.h> @@ -960,84 +961,15 @@ static struct exynos_dp_platdata *exynos_dp_dt_parse_pdata(struct device *dev) return ERR_PTR(-EINVAL); } - return pd; -} - -static int exynos_dp_dt_parse_phydata(struct exynos_dp_device *dp) -{ - struct device_node *dp_phy_node = of_node_get(dp->dev->of_node); - u32 phy_base; - int ret = 0; - - dp_phy_node = of_find_node_by_name(dp_phy_node, "dptx-phy"); - if (!dp_phy_node) { - dev_err(dp->dev, "could not find dptx-phy node\n"); - return -ENODEV; - } - - if (of_property_read_u32(dp_phy_node, "reg", &phy_base)) { - dev_err(dp->dev, "failed to get reg for dptx-phy\n"); - ret = -EINVAL; - goto err; - } - - if (of_property_read_u32(dp_phy_node, "samsung,enable-mask", - &dp->enable_mask)) { - dev_err(dp->dev, "failed to get enable-mask for dptx-phy\n"); - ret = -EINVAL; - goto err; - } - - dp->phy_addr = ioremap(phy_base, SZ_4); - if (!dp->phy_addr) { - dev_err(dp->dev, "failed to ioremap dp-phy\n"); - ret = -ENOMEM; - goto err; - } - -err: - of_node_put(dp_phy_node); - - return ret; -} - -static void exynos_dp_phy_init(struct exynos_dp_device *dp) -{ - u32 reg; - - reg = __raw_readl(dp->phy_addr); - reg |= dp->enable_mask; - __raw_writel(reg, dp->phy_addr); -} - -static void exynos_dp_phy_exit(struct exynos_dp_device *dp) -{ - u32 reg; + pd->phy_label = "dp"; - reg = __raw_readl(dp->phy_addr); - reg &= ~(dp->enable_mask); - __raw_writel(reg, dp->phy_addr); + return pd; } #else static struct exynos_dp_platdata *exynos_dp_dt_parse_pdata(struct device *dev) { return NULL; } - -static int exynos_dp_dt_parse_phydata(struct exynos_dp_device *dp) -{ - return -EINVAL; -} - -static void exynos_dp_phy_init(struct exynos_dp_device *dp) -{ - return; -} - -static void exynos_dp_phy_exit(struct exynos_dp_device *dp) -{ - return; -} #endif /* CONFIG_OF */ static int exynos_dp_probe(struct platform_device *pdev) @@ -1061,10 +993,6 @@ static int exynos_dp_probe(struct platform_device *pdev) pdata = exynos_dp_dt_parse_pdata(&pdev->dev); if (IS_ERR(pdata)) return PTR_ERR(pdata); - - ret = exynos_dp_dt_parse_phydata(dp); - if (ret) - return ret; } else { pdata = pdev->dev.platform_data; if (!pdata) { @@ -1073,6 +1001,10 @@ static int exynos_dp_probe(struct platform_device *pdev) } } + dp->phy = devm_phy_get(&pdev->dev, pdata->phy_label); + if (IS_ERR(dp->phy)) + return PTR_ERR(dp->phy); + dp->clock = devm_clk_get(&pdev->dev, "dp"); if (IS_ERR(dp->clock)) { dev_err(&pdev->dev, "failed to get clock\n"); @@ -1097,13 +1029,7 @@ static int exynos_dp_probe(struct platform_device *pdev) dp->video_info = pdata->video_info; - if (pdev->dev.of_node) { - if (dp->phy_addr) - exynos_dp_phy_init(dp); - } else { - if (pdata->phy_init) - pdata->phy_init(); - } + phy_power_on(dp->phy); exynos_dp_init_dp(dp); @@ -1121,42 +1047,27 @@ static int exynos_dp_probe(struct platform_device *pdev) static int exynos_dp_remove(struct platform_device *pdev) { - struct exynos_dp_platdata *pdata = pdev->dev.platform_data; struct exynos_dp_device *dp = platform_get_drvdata(pdev); flush_work(&dp->hotplug_work); - if (pdev->dev.of_node) { - if (dp->phy_addr) - exynos_dp_phy_exit(dp); - } else { - if (pdata->phy_exit) - pdata->phy_exit(); - } + phy_power_off(dp->phy); clk_disable_unprepare(dp->clock); - return 0; } #ifdef CONFIG_PM_SLEEP static int exynos_dp_suspend(struct device *dev) { - struct exynos_dp_platdata *pdata = dev->platform_data; struct exynos_dp_device *dp = dev_get_drvdata(dev); disable_irq(dp->irq); flush_work(&dp->hotplug_work); - if (dev->of_node) { - if (dp->phy_addr) - exynos_dp_phy_exit(dp); - } else { - if (pdata->phy_exit) - pdata->phy_exit(); - } + phy_power_off(dp->phy); clk_disable_unprepare(dp->clock); @@ -1165,16 +1076,9 @@ static int exynos_dp_suspend(struct device *dev) static int exynos_dp_resume(struct device *dev) { - struct exynos_dp_platdata *pdata = dev->platform_data; struct exynos_dp_device *dp = dev_get_drvdata(dev); - if (dev->of_node) { - if (dp->phy_addr) - exynos_dp_phy_init(dp); - } else { - if (pdata->phy_init) - pdata->phy_init(); - } + phy_power_on(dp->phy); clk_prepare_enable(dp->clock); diff --git a/drivers/video/exynos/exynos_dp_core.h b/drivers/video/exynos/exynos_dp_core.h index 6c567bbf..b3d0328 100644 --- a/drivers/video/exynos/exynos_dp_core.h +++ b/drivers/video/exynos/exynos_dp_core.h @@ -42,6 +42,8 @@ struct exynos_dp_device { struct video_info *video_info; struct link_train link_train; struct work_struct hotplug_work; + + struct phy *phy; }; /* exynos_dp_reg.c */ diff --git a/include/video/exynos_dp.h b/include/video/exynos_dp.h index bd8cabd..f38c9af 100644 --- a/include/video/exynos_dp.h +++ b/include/video/exynos_dp.h @@ -122,10 +122,8 @@ struct video_info { }; struct exynos_dp_platdata { - struct video_info *video_info; - - void (*phy_init)(void); - void (*phy_exit)(void); + struct video_info *video_info; + const char *phy_label; }; #endif /* _EXYNOS_DP_H */
Use the generic PHY API instead of the platform callback to control the DP PHY. The 'phy_label' field is added to the platform data structure to allow PHY lookup on non-dt platforms. Signed-off-by: Jingoo Han <jg1.han@samsung.com> --- .../devicetree/bindings/video/exynos_dp.txt | 17 --- drivers/video/exynos/exynos_dp_core.c | 118 ++------------------ drivers/video/exynos/exynos_dp_core.h | 2 + include/video/exynos_dp.h | 6 +- 4 files changed, 15 insertions(+), 128 deletions(-)