diff options
Diffstat (limited to 'drivers/gpu/drm/bridge')
| -rw-r--r-- | drivers/gpu/drm/bridge/dw_hdmi.c | 44 |
1 files changed, 18 insertions, 26 deletions
diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c index 2ef13d92eaae..62ee3027d08c 100644 --- a/drivers/gpu/drm/bridge/dw_hdmi.c +++ b/drivers/gpu/drm/bridge/dw_hdmi.c @@ -140,7 +140,6 @@ struct dw_hdmi { unsigned int audio_cts; unsigned int audio_n; bool audio_enable; - int ratio; void (*write)(struct dw_hdmi *hdmi, u8 val, int offset); u8 (*read)(struct dw_hdmi *hdmi, int offset); @@ -217,8 +216,7 @@ static void hdmi_set_cts_n(struct dw_hdmi *hdmi, unsigned int cts, hdmi_writeb(hdmi, n & 0xff, HDMI_AUD_N1); } -static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk, - unsigned int ratio) +static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk) { unsigned int n = (128 * freq) / 1000; unsigned int mult = 1; @@ -231,9 +229,9 @@ static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk, switch (freq) { case 32000: if (pixel_clk == 25175000) - n = (ratio == 150) ? 9152 : 4576; + n = 4576; else if (pixel_clk == 27027000) - n = (ratio == 150) ? 8192 : 4096; + n = 4096; else if (pixel_clk == 74176000 || pixel_clk == 148352000) n = 11648; else @@ -247,7 +245,7 @@ static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk, else if (pixel_clk == 74176000) n = 17836; else if (pixel_clk == 148352000) - n = (ratio == 150) ? 17836 : 8918; + n = 8918; else n = 6272; n *= mult; @@ -255,13 +253,13 @@ static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk, case 48000: if (pixel_clk == 25175000) - n = (ratio == 150) ? 9152 : 6864; + n = 6864; else if (pixel_clk == 27027000) - n = (ratio == 150) ? 8192 : 6144; + n = 6144; else if (pixel_clk == 74176000) n = 11648; else if (pixel_clk == 148352000) - n = (ratio == 150) ? 11648 : 5824; + n = 5824; else n = 6144; n *= mult; @@ -274,13 +272,11 @@ static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk, return n; } -static unsigned int hdmi_compute_cts(unsigned int freq, unsigned long pixel_clk, - unsigned int ratio) +static unsigned int hdmi_compute_cts(unsigned int freq, unsigned long pixel_clk) { unsigned int cts = 0; - pr_debug("%s: freq: %d pixel_clk: %ld ratio: %d\n", __func__, freq, - pixel_clk, ratio); + pr_debug("%s: freq: %d pixel_clk: %ld\n", __func__, freq, pixel_clk); switch (freq) { case 32000: @@ -341,26 +337,24 @@ static unsigned int hdmi_compute_cts(unsigned int freq, unsigned long pixel_clk, default: break; } - if (ratio == 100) - return cts; - return (cts * ratio) / 100; + return cts; } static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi, - unsigned long pixel_clk, unsigned int sample_rate, unsigned int ratio) + unsigned long pixel_clk, unsigned int sample_rate) { unsigned int n, cts; - n = hdmi_compute_n(sample_rate, pixel_clk, ratio); - cts = hdmi_compute_cts(sample_rate, pixel_clk, ratio); + n = hdmi_compute_n(sample_rate, pixel_clk); + cts = hdmi_compute_cts(sample_rate, pixel_clk); if (!cts) { dev_err(hdmi->dev, "%s: pixel clock/sample rate not supported: %luMHz / %ukHz\n", __func__, pixel_clk, sample_rate); } - dev_dbg(hdmi->dev, "%s: samplerate=%ukHz ratio=%d pixelclk=%luMHz N=%d cts=%d\n", - __func__, sample_rate, ratio, pixel_clk, n, cts); + dev_dbg(hdmi->dev, "%s: samplerate=%ukHz pixelclk=%luMHz N=%d cts=%d\n", + __func__, sample_rate, pixel_clk, n, cts); spin_lock_irq(&hdmi->audio_lock); hdmi->audio_n = n; @@ -372,8 +366,7 @@ 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, hdmi->sample_rate, - hdmi->ratio); + hdmi_set_clk_regenerator(hdmi, 74250000, hdmi->sample_rate); mutex_unlock(&hdmi->audio_mutex); } @@ -381,7 +374,7 @@ 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, - hdmi->sample_rate, hdmi->ratio); + hdmi->sample_rate); mutex_unlock(&hdmi->audio_mutex); } @@ -390,7 +383,7 @@ 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); + hdmi->sample_rate); mutex_unlock(&hdmi->audio_mutex); } EXPORT_SYMBOL_GPL(dw_hdmi_set_sample_rate); @@ -1746,7 +1739,6 @@ int dw_hdmi_bind(struct device *dev, struct device *master, hdmi->dev = dev; hdmi->dev_type = plat_data->dev_type; hdmi->sample_rate = 48000; - hdmi->ratio = 100; hdmi->encoder = encoder; hdmi->disabled = true; hdmi->rxsense = true; |