提交 8f1ec181 编写于 作者: J Jani Nikula

drm/i915/audio: use the same code for updating audio config

It gets fragile to duplicate the code for updating HSW_AUD_CFG. The only
change should be that the hdmi pixel clock is also updated in
i915_audio_component_sync_audio_rate(), but it should not be any
different.

Cc: Libin Yang <libin.yang@linux.intel.com>
Reviewed-by: NLibin Yang <libin.yang@intel.com>
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/e0e88ec00c0ed1734083153b55283efd3116be5c.1476111629.git.jani.nikula@intel.com
上级 3af306d9
......@@ -671,10 +671,8 @@ static int i915_audio_component_sync_audio_rate(struct device *kdev, int port,
struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
struct intel_encoder *intel_encoder;
struct intel_crtc *crtc;
struct drm_display_mode *mode;
struct drm_display_mode *adjusted_mode;
struct i915_audio_component *acomp = dev_priv->audio_component;
u32 tmp;
int n;
int err = 0;
/* HSW, BDW, SKL, KBL need this fix */
......@@ -700,33 +698,12 @@ static int i915_audio_component_sync_audio_rate(struct device *kdev, int port,
crtc = to_intel_crtc(intel_encoder->base.crtc);
pipe = crtc->pipe;
mode = &crtc->config->base.adjusted_mode;
adjusted_mode = &crtc->config->base.adjusted_mode;
/* port must be valid now, otherwise the pipe will be invalid */
acomp->aud_sample_rate[port] = rate;
/* 2. check whether to set the N/CTS/M manually or not */
if (!audio_rate_need_prog(crtc, mode)) {
tmp = I915_READ(HSW_AUD_CFG(pipe));
tmp &= ~AUD_CONFIG_N_PROG_ENABLE;
I915_WRITE(HSW_AUD_CFG(pipe), tmp);
goto unlock;
}
n = audio_config_get_n(mode, rate);
if (n == 0) {
DRM_DEBUG_KMS("Using automatic mode for N value on port %c\n",
port_name(port));
tmp = I915_READ(HSW_AUD_CFG(pipe));
tmp &= ~AUD_CONFIG_N_PROG_ENABLE;
I915_WRITE(HSW_AUD_CFG(pipe), tmp);
goto unlock;
}
/* 3. set the N/CTS/M */
tmp = I915_READ(HSW_AUD_CFG(pipe));
tmp = audio_config_setup_n_reg(n, tmp);
I915_WRITE(HSW_AUD_CFG(pipe), tmp);
hsw_audio_config_update(crtc, port, adjusted_mode);
unlock:
mutex_unlock(&dev_priv->av_mutex);
......
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