Sorry for late. I missed this patch a little bit for long time.
On 2014년 09월 15일 22:13, 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.
>
> Signed-off-by: Vivek Gautam <gautam.vi...@samsung.com>
> Cc: Jingoo Han <jg1....@samsung.com>
> ---
> drivers/gpu/drm/exynos/exynos_dp_core.c | 58
> +++++++------------------------
> drivers/gpu/drm/exynos/exynos_dp_core.h | 2 --
> 2 files changed, 13 insertions(+), 47 deletions(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c
> b/drivers/gpu/drm/exynos/exynos_dp_core.c
> index 4f3c7eb..5ffc1b2 100644
> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
> @@ -1050,28 +1050,14 @@ 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)
> @@ -1210,39 +1196,21 @@ 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)) {
> + ret = PTR_ERR(dp->phy);
> + if (ret == -ENOSYS || ret == -ENODEV) {
> + dp->phy = NULL;
> + } else if (ret == -EPROBE_DEFER) {
> + return ret;
> + } else {
WARNING: else is not generally useful after a break or return
#146: FILE: drivers/gpu/drm/exynos/exynos_dp_core.c:1208:
+ return ret;
+ } else {
How about just returning ret like below?
if (IS_ERR(dp->phy)) {
dev_err(dp->dev, "no DP phy configured\n");
return PTR_ERR(ret);
}
And then you can handle the error at probe function properly.
Thanks,
Inki Dae
> + dev_err(dp->dev, "no DP phy configured\n");
> + return ret;
> + }
> }
>
> -err:
> - of_node_put(dp_phy_node);
> -
> return ret;
> }
>
> 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;
>
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