Add clk hclk_vio and enable it when hdmi bind.
Signed-off-by: Algea Cao algea.cao@rock-chips.com --- drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)
diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c index 7658b2f..e1a9941 100644 --- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c @@ -61,6 +61,7 @@ struct rockchip_hdmi { enum dw_hdmi_devtype dev_type; struct clk *vpll_clk; struct clk *grf_clk; + struct clk *hclk_vio; struct phy *phy; };
@@ -277,12 +278,27 @@ static int rockchip_hdmi_parse_dt(struct rockchip_hdmi *hdmi) return PTR_ERR(hdmi->grf_clk); }
+ hdmi->hclk_vio = devm_clk_get(hdmi->dev, "hclk_vio"); + if (PTR_ERR(hdmi->hclk_vio) == -ENOENT) { + hdmi->hclk_vio = NULL; + } else if (PTR_ERR(hdmi->hclk_vio) == -EPROBE_DEFER) { + return -EPROBE_DEFER; + } else if (IS_ERR(hdmi->hclk_vio)) { + dev_dbg(hdmi->dev, "failed to get hclk_vio clock\n"); + return PTR_ERR(hdmi->hclk_vio); + } ret = clk_prepare_enable(hdmi->vpll_clk); if (ret) { dev_err(hdmi->dev, "Failed to enable HDMI vpll: %d\n", ret); return ret; }
+ ret = clk_prepare_enable(hdmi->hclk_vio); + if (ret) { + dev_dbg(hdmi->dev, "Failed to eanble HDMI hclk_vio: %d\n", + ret); + return ret; + } return 0; }
@@ -506,6 +522,11 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, static void dw_hdmi_rockchip_unbind(struct device *dev, struct device *master, void *data) { + struct rockchip_hdmi *hdmi = container_of(&dev, struct rockchip_hdmi, + dev); + + clk_disable_unprepare(hdmi->hclk_vio); + return dw_hdmi_unbind(dev); }