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authorThierry Reding <treding@nvidia.com>2019-01-03 17:23:17 +0300
committerThierry Reding <treding@nvidia.com>2019-01-16 15:10:33 +0300
commite3c702dcc7b047a5187a5ad132bfdf3850cc33e1 (patch)
treea9329ad6ceeb76539957ea1aeb6335f9641c4513 /drivers/gpu/drm/tegra/hdmi.c
parentfad7b80643100d16b157b4367a6d2c7f8b19f812 (diff)
downloadlinux-e3c702dcc7b047a5187a5ad132bfdf3850cc33e1.tar.xz
drm/tegra: hdmi: Reuse common HDA format parser
Eliminate some duplicate code by reusing the HDA format parser already used by the SOR. Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/drm/tegra/hdmi.c')
-rw-r--r--drivers/gpu/drm/tegra/hdmi.c43
1 files changed, 8 insertions, 35 deletions
diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c
index d19973945614..8fdff801c6f2 100644
--- a/drivers/gpu/drm/tegra/hdmi.c
+++ b/drivers/gpu/drm/tegra/hdmi.c
@@ -20,8 +20,7 @@
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
-#include <sound/hda_verbs.h>
-
+#include "hda.h"
#include "hdmi.h"
#include "drm.h"
#include "dc.h"
@@ -69,8 +68,7 @@ struct tegra_hdmi {
const struct tegra_hdmi_config *config;
unsigned int audio_source;
- unsigned int audio_sample_rate;
- unsigned int audio_channels;
+ struct tegra_hda_format format;
unsigned int pixel_clock;
bool stereo;
@@ -508,7 +506,7 @@ static void tegra_hdmi_write_aval(struct tegra_hdmi *hdmi, u32 value)
unsigned int i;
for (i = 0; i < ARRAY_SIZE(regs); i++) {
- if (regs[i].sample_rate == hdmi->audio_sample_rate) {
+ if (regs[i].sample_rate == hdmi->format.sample_rate) {
tegra_hdmi_writel(hdmi, value, regs[i].offset);
break;
}
@@ -562,7 +560,7 @@ static int tegra_hdmi_setup_audio(struct tegra_hdmi *hdmi)
* play back system startup sounds early. It is possibly not
* needed on Linux at all.
*/
- if (hdmi->audio_channels == 2)
+ if (hdmi->format.channels == 2)
value = SOR_AUDIO_CNTRL0_INJECT_NULLSMPL;
else
value = 0;
@@ -593,12 +591,12 @@ static int tegra_hdmi_setup_audio(struct tegra_hdmi *hdmi)
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_AUDIO_SPARE0);
}
- config = tegra_hdmi_get_audio_config(hdmi->audio_sample_rate,
+ config = tegra_hdmi_get_audio_config(hdmi->format.sample_rate,
hdmi->pixel_clock);
if (!config) {
dev_err(hdmi->dev,
"cannot set audio to %u Hz at %u Hz pixel clock\n",
- hdmi->audio_sample_rate, hdmi->pixel_clock);
+ hdmi->format.sample_rate, hdmi->pixel_clock);
return -EINVAL;
}
@@ -785,7 +783,7 @@ static void tegra_hdmi_setup_audio_infoframe(struct tegra_hdmi *hdmi)
return;
}
- frame.channels = hdmi->audio_channels;
+ frame.channels = hdmi->format.channels;
err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
if (err < 0) {
@@ -1587,24 +1585,6 @@ static const struct of_device_id tegra_hdmi_of_match[] = {
};
MODULE_DEVICE_TABLE(of, tegra_hdmi_of_match);
-static void hda_format_parse(unsigned int format, unsigned int *rate,
- unsigned int *channels)
-{
- unsigned int mul, div;
-
- if (format & AC_FMT_BASE_44K)
- *rate = 44100;
- else
- *rate = 48000;
-
- mul = (format & AC_FMT_MULT_MASK) >> AC_FMT_MULT_SHIFT;
- div = (format & AC_FMT_DIV_MASK) >> AC_FMT_DIV_SHIFT;
-
- *rate = *rate * (mul + 1) / (div + 1);
-
- *channels = (format & AC_FMT_CHAN_MASK) >> AC_FMT_CHAN_SHIFT;
-}
-
static irqreturn_t tegra_hdmi_irq(int irq, void *data)
{
struct tegra_hdmi *hdmi = data;
@@ -1621,14 +1601,9 @@ static irqreturn_t tegra_hdmi_irq(int irq, void *data)
value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_AUDIO_HDA_CODEC_SCRATCH0);
if (value & SOR_AUDIO_HDA_CODEC_SCRATCH0_VALID) {
- unsigned int sample_rate, channels;
-
format = value & SOR_AUDIO_HDA_CODEC_SCRATCH0_FMT_MASK;
- hda_format_parse(format, &sample_rate, &channels);
-
- hdmi->audio_sample_rate = sample_rate;
- hdmi->audio_channels = channels;
+ tegra_hda_parse_format(format, &hdmi->format);
err = tegra_hdmi_setup_audio(hdmi);
if (err < 0) {
@@ -1662,8 +1637,6 @@ static int tegra_hdmi_probe(struct platform_device *pdev)
hdmi->dev = &pdev->dev;
hdmi->audio_source = AUTO;
- hdmi->audio_sample_rate = 48000;
- hdmi->audio_channels = 2;
hdmi->stereo = false;
hdmi->dvi = false;