diff options
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_hdmi.c')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_hdmi.c | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index d8137b838326..20cfc85449ca 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -611,10 +611,22 @@ static const struct drm_encoder_helper_funcs vc4_hdmi_encoder_helper_funcs = { .enable = vc4_hdmi_encoder_enable, }; +static u32 vc4_hdmi_channel_map(struct vc4_hdmi *vc4_hdmi, u32 channel_mask) +{ + int i; + u32 channel_map = 0; + + for (i = 0; i < 8; i++) { + if (channel_mask & BIT(i)) + channel_map |= i << (3 * i); + } + return channel_map; +} + /* HDMI audio codec callbacks */ static void vc4_hdmi_audio_set_mai_clock(struct vc4_hdmi *vc4_hdmi) { - u32 hsm_clock = clk_get_rate(vc4_hdmi->hsm_clock); + u32 hsm_clock = clk_get_rate(vc4_hdmi->audio_clock); unsigned long n, m; rational_best_approximation(hsm_clock, vc4_hdmi->audio.samplerate, @@ -733,7 +745,7 @@ static int vc4_hdmi_audio_hw_params(struct snd_pcm_substream *substream, struct vc4_hdmi *vc4_hdmi = dai_to_hdmi(dai); struct device *dev = &vc4_hdmi->pdev->dev; u32 audio_packet_config, channel_mask; - u32 channel_map, i; + u32 channel_map; if (substream != vc4_hdmi->audio.substream) return -EINVAL; @@ -785,12 +797,7 @@ static int vc4_hdmi_audio_hw_params(struct snd_pcm_substream *substream, VC4_HDMI_MAI_CONFIG_BIT_REVERSE | VC4_SET_FIELD(channel_mask, VC4_HDMI_MAI_CHANNEL_MASK)); - channel_map = 0; - for (i = 0; i < 8; i++) { - if (channel_mask & BIT(i)) - channel_map |= i << (3 * i); - } - + channel_map = vc4_hdmi->variant->channel_map(vc4_hdmi, channel_mask); HDMI_WRITE(HDMI_MAI_CHANNEL_MAP, channel_map); HDMI_WRITE(HDMI_AUDIO_PACKET_CONFIG, audio_packet_config); vc4_hdmi_set_n_cts(vc4_hdmi); @@ -1342,6 +1349,7 @@ static int vc4_hdmi_init_resources(struct vc4_hdmi *vc4_hdmi) DRM_ERROR("Failed to get HDMI state machine clock\n"); return PTR_ERR(vc4_hdmi->hsm_clock); } + vc4_hdmi->audio_clock = vc4_hdmi->hsm_clock; return 0; } @@ -1507,6 +1515,7 @@ static const struct vc4_hdmi_variant bcm2835_variant = { .phy_disable = vc4_hdmi_phy_disable, .phy_rng_enable = vc4_hdmi_phy_rng_enable, .phy_rng_disable = vc4_hdmi_phy_rng_disable, + .channel_map = vc4_hdmi_channel_map, }; static const struct of_device_id vc4_hdmi_dt_match[] = { |