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drm/rockchip: dw_hdmi: allow including external phys

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Some variants of the dw-hdmi on Rockchip socs use a separate phy block
accessed via the generic phy framework, so allow them to be included
if such a phy reference is found.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Zheng Yang <zhengyang@rock-chips.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180912124740.20343-5-heiko@sntech.de
This commit is contained in:
Heiko Stuebner 2018-09-12 14:47:38 +02:00
parent 9f891dbe39
commit bd1302305a
1 changed files with 10 additions and 0 deletions
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10
drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
View file

@ -11,6 +11,7 @@
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/phy/phy.h>
#include <linux/regmap.h>
#include <drm/drm_of.h>
@ -49,6 +50,7 @@ struct rockchip_hdmi {
struct clk *vpll_clk;
struct clk *grf_clk;
struct dw_hdmi *hdmi;
struct phy *phy;
};
#define to_rockchip_hdmi(x) container_of(x, struct rockchip_hdmi, x)
@ -376,6 +378,14 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
return ret;
}
hdmi->phy = devm_phy_optional_get(dev, "hdmi");
if (IS_ERR(hdmi->phy)) {
ret = PTR_ERR(hdmi->phy);
if (ret != -EPROBE_DEFER)
DRM_DEV_ERROR(hdmi->dev, "failed to get phy\n");
return ret;
}
drm_encoder_helper_add(encoder, &dw_hdmi_rockchip_encoder_helper_funcs);
drm_encoder_init(drm, encoder, &dw_hdmi_rockchip_encoder_funcs,
DRM_MODE_ENCODER_TMDS, NULL);