diff options
Diffstat (limited to 'drivers/gpu/drm/bridge/dw_hdmi.c')
| -rw-r--r-- | drivers/gpu/drm/bridge/dw_hdmi.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c index 7836355..b75922d 100644 --- a/drivers/gpu/drm/bridge/dw_hdmi.c +++ b/drivers/gpu/drm/bridge/dw_hdmi.c @@ -16,6 +16,7 @@ #include <linux/err.h> #include <linux/clk.h> #include <linux/hdmi.h> +#include <linux/mutex.h> #include <linux/of_device.h> #include <drm/drm_of.h> @@ -126,6 +127,7 @@ struct dw_hdmi { struct i2c_adapter *ddc; void __iomem *regs; + struct mutex audio_mutex; unsigned int sample_rate; int ratio; @@ -357,12 +359,16 @@ static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi, static void hdmi_init_clk_regenerator(struct dw_hdmi *hdmi) { + mutex_lock(&hdmi->audio_mutex); hdmi_set_clk_regenerator(hdmi, 74250000); + mutex_unlock(&hdmi->audio_mutex); } static void hdmi_clk_regenerator_update_pixel_clock(struct dw_hdmi *hdmi) { + mutex_lock(&hdmi->audio_mutex); hdmi_set_clk_regenerator(hdmi, hdmi->hdmi_data.video_mode.mpixelclock); + mutex_unlock(&hdmi->audio_mutex); } /* @@ -1565,6 +1571,8 @@ int dw_hdmi_bind(struct device *dev, struct device *master, hdmi->ratio = 100; hdmi->encoder = encoder; + mutex_init(&hdmi->audio_mutex); + of_property_read_u32(np, "reg-io-width", &val); switch (val) { |