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path: root/drivers/gpu/drm/msm/hdmi/hdmi_audio.c
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Diffstat (limited to 'drivers/gpu/drm/msm/hdmi/hdmi_audio.c')
-rw-r--r--drivers/gpu/drm/msm/hdmi/hdmi_audio.c199
1 files changed, 62 insertions, 137 deletions
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_audio.c b/drivers/gpu/drm/msm/hdmi/hdmi_audio.c
index 4c2058c4adc1..b9ec14ef2c20 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_audio.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_audio.c
@@ -4,86 +4,28 @@
* Author: Rob Clark <robdclark@gmail.com>
*/
-#include <linux/hdmi.h>
-#include "hdmi.h"
+#include <drm/display/drm_hdmi_helper.h>
+#include <drm/display/drm_hdmi_state_helper.h>
-/* maps MSM_HDMI_AUDIO_CHANNEL_n consts used by audio driver to # of channels: */
-static int nchannels[] = { 2, 4, 6, 8 };
-
-/* Supported HDMI Audio sample rates */
-#define MSM_HDMI_SAMPLE_RATE_32KHZ 0
-#define MSM_HDMI_SAMPLE_RATE_44_1KHZ 1
-#define MSM_HDMI_SAMPLE_RATE_48KHZ 2
-#define MSM_HDMI_SAMPLE_RATE_88_2KHZ 3
-#define MSM_HDMI_SAMPLE_RATE_96KHZ 4
-#define MSM_HDMI_SAMPLE_RATE_176_4KHZ 5
-#define MSM_HDMI_SAMPLE_RATE_192KHZ 6
-#define MSM_HDMI_SAMPLE_RATE_MAX 7
-
-
-struct hdmi_msm_audio_acr {
- uint32_t n; /* N parameter for clock regeneration */
- uint32_t cts; /* CTS parameter for clock regeneration */
-};
-
-struct hdmi_msm_audio_arcs {
- unsigned long int pixclock;
- struct hdmi_msm_audio_acr lut[MSM_HDMI_SAMPLE_RATE_MAX];
-};
-
-#define HDMI_MSM_AUDIO_ARCS(pclk, ...) { (1000 * (pclk)), __VA_ARGS__ }
-
-/* Audio constants lookup table for hdmi_msm_audio_acr_setup */
-/* Valid Pixel-Clock rates: 25.2MHz, 27MHz, 27.03MHz, 74.25MHz, 148.5MHz */
-static const struct hdmi_msm_audio_arcs acr_lut[] = {
- /* 25.200MHz */
- HDMI_MSM_AUDIO_ARCS(25200, {
- {4096, 25200}, {6272, 28000}, {6144, 25200}, {12544, 28000},
- {12288, 25200}, {25088, 28000}, {24576, 25200} }),
- /* 27.000MHz */
- HDMI_MSM_AUDIO_ARCS(27000, {
- {4096, 27000}, {6272, 30000}, {6144, 27000}, {12544, 30000},
- {12288, 27000}, {25088, 30000}, {24576, 27000} }),
- /* 27.027MHz */
- HDMI_MSM_AUDIO_ARCS(27030, {
- {4096, 27027}, {6272, 30030}, {6144, 27027}, {12544, 30030},
- {12288, 27027}, {25088, 30030}, {24576, 27027} }),
- /* 74.250MHz */
- HDMI_MSM_AUDIO_ARCS(74250, {
- {4096, 74250}, {6272, 82500}, {6144, 74250}, {12544, 82500},
- {12288, 74250}, {25088, 82500}, {24576, 74250} }),
- /* 148.500MHz */
- HDMI_MSM_AUDIO_ARCS(148500, {
- {4096, 148500}, {6272, 165000}, {6144, 148500}, {12544, 165000},
- {12288, 148500}, {25088, 165000}, {24576, 148500} }),
-};
-
-static const struct hdmi_msm_audio_arcs *get_arcs(unsigned long int pixclock)
-{
- int i;
+#include <linux/hdmi.h>
- for (i = 0; i < ARRAY_SIZE(acr_lut); i++) {
- const struct hdmi_msm_audio_arcs *arcs = &acr_lut[i];
- if (arcs->pixclock == pixclock)
- return arcs;
- }
+#include <sound/hdmi-codec.h>
- return NULL;
-}
+#include "hdmi.h"
int msm_hdmi_audio_update(struct hdmi *hdmi)
{
struct hdmi_audio *audio = &hdmi->audio;
- struct hdmi_audio_infoframe *info = &audio->infoframe;
- const struct hdmi_msm_audio_arcs *arcs = NULL;
bool enabled = audio->enabled;
uint32_t acr_pkt_ctrl, vbi_pkt_ctrl, aud_pkt_ctrl;
- uint32_t infofrm_ctrl, audio_config;
+ uint32_t audio_config;
+
+ if (!hdmi->connector->display_info.is_hdmi)
+ return -EINVAL;
+
+ DBG("audio: enabled=%d, channels=%d, rate=%d",
+ audio->enabled, audio->channels, audio->rate);
- DBG("audio: enabled=%d, channels=%d, channel_allocation=0x%x, "
- "level_shift_value=%d, downmix_inhibit=%d, rate=%d",
- audio->enabled, info->channels, info->channel_allocation,
- info->level_shift_value, info->downmix_inhibit, audio->rate);
DBG("video: power_on=%d, pixclock=%lu", hdmi->power_on, hdmi->pixclock);
if (enabled && !(hdmi->power_on && hdmi->pixclock)) {
@@ -91,20 +33,10 @@ int msm_hdmi_audio_update(struct hdmi *hdmi)
enabled = false;
}
- if (enabled) {
- arcs = get_arcs(hdmi->pixclock);
- if (!arcs) {
- DBG("disabling audio: unsupported pixclock: %lu",
- hdmi->pixclock);
- enabled = false;
- }
- }
-
/* Read first before writing */
acr_pkt_ctrl = hdmi_read(hdmi, REG_HDMI_ACR_PKT_CTRL);
vbi_pkt_ctrl = hdmi_read(hdmi, REG_HDMI_VBI_PKT_CTRL);
aud_pkt_ctrl = hdmi_read(hdmi, REG_HDMI_AUDIO_PKT_CTRL1);
- infofrm_ctrl = hdmi_read(hdmi, REG_HDMI_INFOFRAME_CTRL0);
audio_config = hdmi_read(hdmi, REG_HDMI_AUDIO_CFG);
/* Clear N/CTS selection bits */
@@ -113,17 +45,13 @@ int msm_hdmi_audio_update(struct hdmi *hdmi)
if (enabled) {
uint32_t n, cts, multiplier;
enum hdmi_acr_cts select;
- uint8_t buf[14];
- n = arcs->lut[audio->rate].n;
- cts = arcs->lut[audio->rate].cts;
+ drm_hdmi_acr_get_n_cts(hdmi->pixclock, audio->rate, &n, &cts);
- if ((MSM_HDMI_SAMPLE_RATE_192KHZ == audio->rate) ||
- (MSM_HDMI_SAMPLE_RATE_176_4KHZ == audio->rate)) {
+ if (audio->rate == 192000 || audio->rate == 176400) {
multiplier = 4;
n >>= 2; /* divide N by 4 and use multiplier */
- } else if ((MSM_HDMI_SAMPLE_RATE_96KHZ == audio->rate) ||
- (MSM_HDMI_SAMPLE_RATE_88_2KHZ == audio->rate)) {
+ } else if (audio->rate == 96000 || audio->rate == 88200) {
multiplier = 2;
n >>= 1; /* divide N by 2 and use multiplier */
} else {
@@ -136,13 +64,11 @@ int msm_hdmi_audio_update(struct hdmi *hdmi)
acr_pkt_ctrl |= HDMI_ACR_PKT_CTRL_AUDIO_PRIORITY;
acr_pkt_ctrl |= HDMI_ACR_PKT_CTRL_N_MULTIPLIER(multiplier);
- if ((MSM_HDMI_SAMPLE_RATE_48KHZ == audio->rate) ||
- (MSM_HDMI_SAMPLE_RATE_96KHZ == audio->rate) ||
- (MSM_HDMI_SAMPLE_RATE_192KHZ == audio->rate))
+ if (audio->rate == 48000 || audio->rate == 96000 ||
+ audio->rate == 192000)
select = ACR_48;
- else if ((MSM_HDMI_SAMPLE_RATE_44_1KHZ == audio->rate) ||
- (MSM_HDMI_SAMPLE_RATE_88_2KHZ == audio->rate) ||
- (MSM_HDMI_SAMPLE_RATE_176_4KHZ == audio->rate))
+ else if (audio->rate == 44100 || audio->rate == 88200 ||
+ audio->rate == 176400)
select = ACR_44;
else /* default to 32k */
select = ACR_32;
@@ -155,20 +81,12 @@ int msm_hdmi_audio_update(struct hdmi *hdmi)
HDMI_ACR_1_N(n));
hdmi_write(hdmi, REG_HDMI_AUDIO_PKT_CTRL2,
- COND(info->channels != 2, HDMI_AUDIO_PKT_CTRL2_LAYOUT) |
+ COND(audio->channels != 2, HDMI_AUDIO_PKT_CTRL2_LAYOUT) |
HDMI_AUDIO_PKT_CTRL2_OVERRIDE);
acr_pkt_ctrl |= HDMI_ACR_PKT_CTRL_CONT;
acr_pkt_ctrl |= HDMI_ACR_PKT_CTRL_SEND;
- /* configure infoframe: */
- hdmi_audio_infoframe_pack(info, buf, sizeof(buf));
- hdmi_write(hdmi, REG_HDMI_AUDIO_INFO0,
- (buf[3] << 0) | (buf[4] << 8) |
- (buf[5] << 16) | (buf[6] << 24));
- hdmi_write(hdmi, REG_HDMI_AUDIO_INFO1,
- (buf[7] << 0) | (buf[8] << 8));
-
hdmi_write(hdmi, REG_HDMI_GC, 0);
vbi_pkt_ctrl |= HDMI_VBI_PKT_CTRL_GC_ENABLE;
@@ -176,11 +94,6 @@ int msm_hdmi_audio_update(struct hdmi *hdmi)
aud_pkt_ctrl |= HDMI_AUDIO_PKT_CTRL1_AUDIO_SAMPLE_SEND;
- infofrm_ctrl |= HDMI_INFOFRAME_CTRL0_AUDIO_INFO_SEND;
- infofrm_ctrl |= HDMI_INFOFRAME_CTRL0_AUDIO_INFO_CONT;
- infofrm_ctrl |= HDMI_INFOFRAME_CTRL0_AUDIO_INFO_SOURCE;
- infofrm_ctrl |= HDMI_INFOFRAME_CTRL0_AUDIO_INFO_UPDATE;
-
audio_config &= ~HDMI_AUDIO_CFG_FIFO_WATERMARK__MASK;
audio_config |= HDMI_AUDIO_CFG_FIFO_WATERMARK(4);
audio_config |= HDMI_AUDIO_CFG_ENGINE_ENABLE;
@@ -190,17 +103,12 @@ int msm_hdmi_audio_update(struct hdmi *hdmi)
vbi_pkt_ctrl &= ~HDMI_VBI_PKT_CTRL_GC_ENABLE;
vbi_pkt_ctrl &= ~HDMI_VBI_PKT_CTRL_GC_EVERY_FRAME;
aud_pkt_ctrl &= ~HDMI_AUDIO_PKT_CTRL1_AUDIO_SAMPLE_SEND;
- infofrm_ctrl &= ~HDMI_INFOFRAME_CTRL0_AUDIO_INFO_SEND;
- infofrm_ctrl &= ~HDMI_INFOFRAME_CTRL0_AUDIO_INFO_CONT;
- infofrm_ctrl &= ~HDMI_INFOFRAME_CTRL0_AUDIO_INFO_SOURCE;
- infofrm_ctrl &= ~HDMI_INFOFRAME_CTRL0_AUDIO_INFO_UPDATE;
audio_config &= ~HDMI_AUDIO_CFG_ENGINE_ENABLE;
}
hdmi_write(hdmi, REG_HDMI_ACR_PKT_CTRL, acr_pkt_ctrl);
hdmi_write(hdmi, REG_HDMI_VBI_PKT_CTRL, vbi_pkt_ctrl);
hdmi_write(hdmi, REG_HDMI_AUDIO_PKT_CTRL1, aud_pkt_ctrl);
- hdmi_write(hdmi, REG_HDMI_INFOFRAME_CTRL0, infofrm_ctrl);
hdmi_write(hdmi, REG_HDMI_AUD_INT,
COND(enabled, HDMI_AUD_INT_AUD_FIFO_URUN_INT) |
@@ -214,41 +122,58 @@ int msm_hdmi_audio_update(struct hdmi *hdmi)
return 0;
}
-int msm_hdmi_audio_info_setup(struct hdmi *hdmi, bool enabled,
- uint32_t num_of_channels, uint32_t channel_allocation,
- uint32_t level_shift, bool down_mix)
+int msm_hdmi_bridge_audio_prepare(struct drm_connector *connector,
+ struct drm_bridge *bridge,
+ struct hdmi_codec_daifmt *daifmt,
+ struct hdmi_codec_params *params)
{
- struct hdmi_audio *audio;
-
- if (!hdmi)
- return -ENXIO;
-
- audio = &hdmi->audio;
-
- if (num_of_channels >= ARRAY_SIZE(nchannels))
+ struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
+ struct hdmi *hdmi = hdmi_bridge->hdmi;
+ int ret;
+
+ drm_dbg_driver(bridge->dev, "%u Hz, %d bit, %d channels\n",
+ params->sample_rate,
+ params->sample_width,
+ params->cea.channels);
+
+ switch (params->sample_rate) {
+ case 32000:
+ case 44100:
+ case 48000:
+ case 88200:
+ case 96000:
+ case 176400:
+ case 192000:
+ break;
+ default:
+ drm_err(bridge->dev, "rate[%d] not supported!\n",
+ params->sample_rate);
return -EINVAL;
+ }
- audio->enabled = enabled;
- audio->infoframe.channels = nchannels[num_of_channels];
- audio->infoframe.channel_allocation = channel_allocation;
- audio->infoframe.level_shift_value = level_shift;
- audio->infoframe.downmix_inhibit = down_mix;
+ ret = drm_atomic_helper_connector_hdmi_update_audio_infoframe(connector,
+ &params->cea);
+ if (ret)
+ return ret;
+
+ hdmi->audio.rate = params->sample_rate;
+ hdmi->audio.channels = params->cea.channels;
+ hdmi->audio.enabled = true;
return msm_hdmi_audio_update(hdmi);
}
-void msm_hdmi_audio_set_sample_rate(struct hdmi *hdmi, int rate)
+void msm_hdmi_bridge_audio_shutdown(struct drm_connector *connector,
+ struct drm_bridge *bridge)
{
- struct hdmi_audio *audio;
-
- if (!hdmi)
- return;
+ struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
+ struct hdmi *hdmi = hdmi_bridge->hdmi;
- audio = &hdmi->audio;
+ drm_atomic_helper_connector_hdmi_clear_audio_infoframe(connector);
- if ((rate < 0) || (rate >= MSM_HDMI_SAMPLE_RATE_MAX))
- return;
+ hdmi->audio.rate = 0;
+ hdmi->audio.channels = 2;
+ hdmi->audio.enabled = false;
- audio->rate = rate;
msm_hdmi_audio_update(hdmi);
}
generated by cgit (git 2.34.1) at 2025-08-02 01:49:22 +0000