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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-03-27 12:50:58 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-08-18 11:27:15 +0100 |
| commit | b5814fff27c6d0212b86306bdd01fe3aea99cabb (patch) | |
| tree | edc2ebd40a0847df99649a1949136bd49847c251 | |
| parent | b91eee8cd8a547e43e271e5908e16c4a53c9416d (diff) | |
| download | linux-b5814fff27c6d0212b86306bdd01fe3aea99cabb.tar.gz linux-b5814fff27c6d0212b86306bdd01fe3aea99cabb.tar.bz2 linux-b5814fff27c6d0212b86306bdd01fe3aea99cabb.zip | |
drm: bridge/dw_hdmi: introduce interface to setting sample rate
Introduce dw_hdmi_set_sample_rate(), which allows us to configure the
audio sample rate, setting the CTS/N values appropriately.
Tested-by: Yakir Yang <ykk@rock-chips.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | drivers/gpu/drm/bridge/dw_hdmi.c | 10 | ||||
| -rw-r--r-- | include/drm/bridge/dw_hdmi.h | 5 |
2 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c index eeb01693812a..0ed8c49f1c6e 100644 --- a/drivers/gpu/drm/bridge/dw_hdmi.c +++ b/drivers/gpu/drm/bridge/dw_hdmi.c @@ -365,6 +365,16 @@ static void hdmi_clk_regenerator_update_pixel_clock(struct dw_hdmi *hdmi) mutex_unlock(&hdmi->audio_mutex); } +void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate) +{ + mutex_lock(&hdmi->audio_mutex); + hdmi->sample_rate = rate; + hdmi_set_clk_regenerator(hdmi, hdmi->hdmi_data.video_mode.mpixelclock, + hdmi->sample_rate, hdmi->ratio); + mutex_unlock(&hdmi->audio_mutex); +} +EXPORT_SYMBOL_GPL(dw_hdmi_set_sample_rate); + /* * this submodule is responsible for the video data synchronization. * for example, for RGB 4:4:4 input, the data map is defined as diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h index de13bfc35634..763af51e1d60 100644 --- a/include/drm/bridge/dw_hdmi.h +++ b/include/drm/bridge/dw_hdmi.h @@ -12,6 +12,8 @@ #include <drm/drmP.h> +struct dw_hdmi; + enum { DW_HDMI_RES_8, DW_HDMI_RES_10, @@ -59,4 +61,7 @@ int dw_hdmi_bind(struct device *dev, struct device *master, void *data, struct drm_encoder *encoder, struct resource *iores, int irq, const struct dw_hdmi_plat_data *plat_data); + +void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate); + #endif /* __IMX_HDMI_H__ */ |