| Message ID | 1414675442-3471-1-git-send-email-gautam.vivek@samsung.com (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
On Thursday, October 30, 2014 10:24 PM, Vivek Gautam wrote: > > Now that we have moved to generic phy based bindings, > we don't need to have any code related to older dptx-phy. > Nobody is using this dptx-phy anymore, so removing the > same. Right, older dptx-phy was replaced long time ago. However, it was not removed for DT compatibility. I think that now these old DT properties can be removed. I added some comments below. > > Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> > Cc: Inki Dae <inki.dae@samsung.com> > Cc: Jingoo Han <jg1.han@samsung.com> > --- > > Changes from V1: > - Reworked error handling in exynos_dp_dt_parse_phydata() as commented > by Inki. > > drivers/gpu/drm/exynos/exynos_dp_core.c | 67 ++++++++----------------------- > drivers/gpu/drm/exynos/exynos_dp_core.h | 2 - > 2 files changed, 17 insertions(+), 52 deletions(-) > > diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c > index cd50ece..206163b 100644 > --- a/drivers/gpu/drm/exynos/exynos_dp_core.c > +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c > @@ -1052,28 +1052,14 @@ static int exynos_dp_create_connector(struct exynos_drm_display *display, > > static void exynos_dp_phy_init(struct exynos_dp_device *dp) > { > - if (dp->phy) { > + if (dp->phy) > phy_power_on(dp->phy); > - } else if (dp->phy_addr) { > - 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) > { > - if (dp->phy) { > + if (dp->phy) > phy_power_off(dp->phy); > - } else if (dp->phy_addr) { > - u32 reg; > - > - reg = __raw_readl(dp->phy_addr); > - reg &= ~(dp->enable_mask); > - __raw_writel(reg, dp->phy_addr); > - } > } > > static void exynos_dp_poweron(struct exynos_drm_display *display) > @@ -1212,40 +1198,13 @@ static struct video_info *exynos_dp_dt_parse_pdata(struct device *dev) > > 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) { > - dp->phy = devm_phy_get(dp->dev, "dp"); > - return PTR_ERR_OR_ZERO(dp->phy); > - } > - > - 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; > + dp->phy = devm_phy_get(dp->dev, "dp"); > + if (IS_ERR(dp->phy)) { > + dev_err(dp->dev, "no DP phy configured\n"); > + return PTR_ERR(dp->phy); > } > > -err: > - of_node_put(dp_phy_node); > - > - return ret; > + return 0; > } > > static int exynos_dp_dt_parse_panel(struct exynos_dp_device *dp) > @@ -1278,8 +1237,16 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data) > return PTR_ERR(dp->video_info); > > ret = exynos_dp_dt_parse_phydata(dp); In your patch, exynos_dp_dt_parse_phydata() calls only devm_phy_get(). Then, how about calling devm_phy_get() directly and removing exynos_dp_dt_parse_phydata()? It looks simpler. Best regards, Jingoo Han > - if (ret) > - return ret; > + if (ret) { > + /* > + * phy itself is not enabled, so we can move forward > + * assigning NULL to phy pointer. > + */ > + if (ret == -ENOSYS || ret == -ENODEV) > + dp->phy = NULL; > + else > + return ret; > + } > > if (!dp->panel) { > ret = exynos_dp_dt_parse_panel(dp); > diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.h b/drivers/gpu/drm/exynos/exynos_dp_core.h > index a1aee69..6426201 100644 > --- a/drivers/gpu/drm/exynos/exynos_dp_core.h > +++ b/drivers/gpu/drm/exynos/exynos_dp_core.h > @@ -153,8 +153,6 @@ struct exynos_dp_device { > struct clk *clock; > unsigned int irq; > void __iomem *reg_base; > - void __iomem *phy_addr; > - unsigned int enable_mask; > > struct video_info *video_info; > struct link_train link_train; > -- > 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Wed, Nov 12, 2014 at 9:38 AM, Jingoo Han <jg1.han@samsung.com> wrote: > On Thursday, October 30, 2014 10:24 PM, Vivek Gautam wrote: >> >> Now that we have moved to generic phy based bindings, >> we don't need to have any code related to older dptx-phy. >> Nobody is using this dptx-phy anymore, so removing the >> same. > > Right, older dptx-phy was replaced long time ago. > However, it was not removed for DT compatibility. > I think that now these old DT properties can be removed. > > I added some comments below. Thanks Jingoo for reviewing. > >> >> Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> >> Cc: Inki Dae <inki.dae@samsung.com> >> Cc: Jingoo Han <jg1.han@samsung.com> >> --- >> >> Changes from V1: >> - Reworked error handling in exynos_dp_dt_parse_phydata() as commented >> by Inki. >> >> drivers/gpu/drm/exynos/exynos_dp_core.c | 67 ++++++++----------------------- >> drivers/gpu/drm/exynos/exynos_dp_core.h | 2 - >> 2 files changed, 17 insertions(+), 52 deletions(-) >> >> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c >> index cd50ece..206163b 100644 >> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c >> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c >> @@ -1052,28 +1052,14 @@ static int exynos_dp_create_connector(struct exynos_drm_display *display, >> >> static void exynos_dp_phy_init(struct exynos_dp_device *dp) >> { >> - if (dp->phy) { >> + if (dp->phy) >> phy_power_on(dp->phy); >> - } else if (dp->phy_addr) { >> - 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) >> { >> - if (dp->phy) { >> + if (dp->phy) >> phy_power_off(dp->phy); >> - } else if (dp->phy_addr) { >> - u32 reg; >> - >> - reg = __raw_readl(dp->phy_addr); >> - reg &= ~(dp->enable_mask); >> - __raw_writel(reg, dp->phy_addr); >> - } >> } >> >> static void exynos_dp_poweron(struct exynos_drm_display *display) >> @@ -1212,40 +1198,13 @@ static struct video_info *exynos_dp_dt_parse_pdata(struct device *dev) >> >> 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) { >> - dp->phy = devm_phy_get(dp->dev, "dp"); >> - return PTR_ERR_OR_ZERO(dp->phy); >> - } >> - >> - 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; >> + dp->phy = devm_phy_get(dp->dev, "dp"); >> + if (IS_ERR(dp->phy)) { >> + dev_err(dp->dev, "no DP phy configured\n"); >> + return PTR_ERR(dp->phy); >> } >> >> -err: >> - of_node_put(dp_phy_node); >> - >> - return ret; >> + return 0; >> } >> >> static int exynos_dp_dt_parse_panel(struct exynos_dp_device *dp) >> @@ -1278,8 +1237,16 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data) >> return PTR_ERR(dp->video_info); >> >> ret = exynos_dp_dt_parse_phydata(dp); > > In your patch, exynos_dp_dt_parse_phydata() calls only devm_phy_get(). > Then, how about calling devm_phy_get() directly and removing > exynos_dp_dt_parse_phydata()? It looks simpler. Right, makes sense. Will send quick rework for this. Then you can give your Reviewed-by. ;-) [snip]
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c index cd50ece..206163b 100644 --- a/drivers/gpu/drm/exynos/exynos_dp_core.c +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c @@ -1052,28 +1052,14 @@ static int exynos_dp_create_connector(struct exynos_drm_display *display, static void exynos_dp_phy_init(struct exynos_dp_device *dp) { - if (dp->phy) { + if (dp->phy) phy_power_on(dp->phy); - } else if (dp->phy_addr) { - 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) { - if (dp->phy) { + if (dp->phy) phy_power_off(dp->phy); - } else if (dp->phy_addr) { - u32 reg; - - reg = __raw_readl(dp->phy_addr); - reg &= ~(dp->enable_mask); - __raw_writel(reg, dp->phy_addr); - } } static void exynos_dp_poweron(struct exynos_drm_display *display) @@ -1212,40 +1198,13 @@ static struct video_info *exynos_dp_dt_parse_pdata(struct device *dev) 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) { - dp->phy = devm_phy_get(dp->dev, "dp"); - return PTR_ERR_OR_ZERO(dp->phy); - } - - 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; + dp->phy = devm_phy_get(dp->dev, "dp"); + if (IS_ERR(dp->phy)) { + dev_err(dp->dev, "no DP phy configured\n"); + return PTR_ERR(dp->phy); } -err: - of_node_put(dp_phy_node); - - return ret; + return 0; } static int exynos_dp_dt_parse_panel(struct exynos_dp_device *dp) @@ -1278,8 +1237,16 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data) return PTR_ERR(dp->video_info); ret = exynos_dp_dt_parse_phydata(dp); - if (ret) - return ret; + if (ret) { + /* + * phy itself is not enabled, so we can move forward + * assigning NULL to phy pointer. + */ + if (ret == -ENOSYS || ret == -ENODEV) + dp->phy = NULL; + else + return ret; + } if (!dp->panel) { ret = exynos_dp_dt_parse_panel(dp); diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.h b/drivers/gpu/drm/exynos/exynos_dp_core.h index a1aee69..6426201 100644 --- a/drivers/gpu/drm/exynos/exynos_dp_core.h +++ b/drivers/gpu/drm/exynos/exynos_dp_core.h @@ -153,8 +153,6 @@ struct exynos_dp_device { struct clk *clock; unsigned int irq; void __iomem *reg_base; - void __iomem *phy_addr; - unsigned int enable_mask; struct video_info *video_info; struct link_train link_train;
Now that we have moved to generic phy based bindings, we don't need to have any code related to older dptx-phy. Nobody is using this dptx-phy anymore, so removing the same. Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> Cc: Inki Dae <inki.dae@samsung.com> Cc: Jingoo Han <jg1.han@samsung.com> --- Changes from V1: - Reworked error handling in exynos_dp_dt_parse_phydata() as commented by Inki. drivers/gpu/drm/exynos/exynos_dp_core.c | 67 ++++++++----------------------- drivers/gpu/drm/exynos/exynos_dp_core.h | 2 - 2 files changed, 17 insertions(+), 52 deletions(-)