[PATCH 1/3] drm/rockchip: inno_hdmi: add audio support
Yakir Yang
ykk at rock-chips.com
Wed Jun 15 13:28:32 UTC 2016
Using the common hdmi-codec driver to support hdmi audio function.
Signed-off-by: Yakir Yang <ykk at rock-chips.com>
---
drivers/gpu/drm/rockchip/inno_hdmi.c | 237 ++++++++++++++++++++++++++++++++++-
drivers/gpu/drm/rockchip/inno_hdmi.h | 2 +
2 files changed, 237 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c
index f8b4feb..c31dc07 100644
--- a/drivers/gpu/drm/rockchip/inno_hdmi.c
+++ b/drivers/gpu/drm/rockchip/inno_hdmi.c
@@ -29,6 +29,8 @@
#include <drm/drm_crtc_helper.h>
#include <drm/drm_edid.h>
+#include <sound/hdmi-codec.h>
+
#include "rockchip_drm_drv.h"
#include "rockchip_drm_vop.h"
@@ -36,6 +38,12 @@
#define to_inno_hdmi(x) container_of(x, struct inno_hdmi, x)
+struct audio_info {
+ int sample_rate;
+ int channels;
+ int sample_width;
+};
+
struct hdmi_data_info {
int vic;
bool sink_is_hdmi;
@@ -71,6 +79,9 @@ struct inno_hdmi {
unsigned int tmds_rate;
+ struct platform_device *audio_pdev;
+ bool audio_enable;
+
struct hdmi_data_info hdmi_data;
struct drm_display_mode previous_mode;
};
@@ -306,6 +317,57 @@ static int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi,
return inno_hdmi_upload_frame(hdmi, rc, &frame, INFOFRAME_AVI, 0, 0, 0);
}
+static int inno_hdmi_config_audio_aai(struct inno_hdmi *hdmi,
+ struct audio_info *audio)
+{
+ struct hdmi_audio_infoframe *faudio;
+ union hdmi_infoframe frame;
+ int rc;
+
+ rc = hdmi_audio_infoframe_init(&frame.audio);
+ faudio = (struct hdmi_audio_infoframe *)&frame;
+
+ faudio->channels = audio->channels;
+
+ switch (audio->sample_width) {
+ case 16:
+ faudio->sample_size = HDMI_AUDIO_SAMPLE_SIZE_16;
+ break;
+ case 20:
+ faudio->sample_size = HDMI_AUDIO_SAMPLE_SIZE_20;
+ break;
+ case 24:
+ faudio->sample_size = HDMI_AUDIO_SAMPLE_SIZE_24;
+ break;
+ }
+
+ switch (audio->sample_rate) {
+ case 32000:
+ faudio->sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_32000;
+ break;
+ case 44100:
+ faudio->sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_44100;
+ break;
+ case 48000:
+ faudio->sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_48000;
+ break;
+ case 88200:
+ faudio->sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_88200;
+ break;
+ case 96000:
+ faudio->sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_96000;
+ break;
+ case 176400:
+ faudio->sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_176400;
+ break;
+ case 192000:
+ faudio->sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_192000;
+ break;
+ }
+
+ return inno_hdmi_upload_frame(hdmi, rc, &frame, INFOFRAME_AAI, 0, 0, 0);
+}
+
static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi)
{
struct hdmi_data_info *data = &hdmi->hdmi_data;
@@ -478,8 +540,9 @@ static int inno_hdmi_setup(struct inno_hdmi *hdmi,
inno_hdmi_i2c_init(hdmi);
/* Unmute video and audio output */
- hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_VIDEO_BLACK,
- v_AUDIO_MUTE(0) | v_VIDEO_MUTE(0));
+ hdmi_modb(hdmi, HDMI_AV_MUTE, m_VIDEO_BLACK, v_VIDEO_MUTE(0));
+ if (hdmi->audio_enable)
+ hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE, v_AUDIO_MUTE(0));
return 0;
}
@@ -616,6 +679,174 @@ static struct drm_connector_helper_funcs inno_hdmi_connector_helper_funcs = {
.best_encoder = inno_hdmi_connector_best_encoder,
};
+int inno_hdmi_audio_config_set(struct inno_hdmi *hdmi, struct audio_info *audio)
+{
+ int rate, N, channel;
+
+ if (audio->channels < 3)
+ channel = I2S_CHANNEL_1_2;
+ else if (audio->channels < 5)
+ channel = I2S_CHANNEL_3_4;
+ else if (audio->channels < 7)
+ channel = I2S_CHANNEL_5_6;
+ else
+ channel = I2S_CHANNEL_7_8;
+
+ switch (audio->sample_rate) {
+ case 32000:
+ rate = AUDIO_32K;
+ N = N_32K;
+ break;
+ case 44100:
+ rate = AUDIO_441K;
+ N = N_441K;
+ break;
+ case 48000:
+ rate = AUDIO_48K;
+ N = N_48K;
+ break;
+ case 88200:
+ rate = AUDIO_882K;
+ N = N_882K;
+ break;
+ case 96000:
+ rate = AUDIO_96K;
+ N = N_96K;
+ break;
+ case 176400:
+ rate = AUDIO_1764K;
+ N = N_1764K;
+ break;
+ case 192000:
+ rate = AUDIO_192K;
+ N = N_192K;
+ break;
+ default:
+ dev_err(hdmi->dev, "[%s] not support such sample rate %d\n",
+ __func__, audio->sample_rate);
+ return -ENOENT;
+ }
+
+ /* set_audio source I2S */
+ hdmi_writeb(hdmi, HDMI_AUDIO_CTRL1, 0x01);
+ hdmi_writeb(hdmi, AUDIO_SAMPLE_RATE, rate);
+ hdmi_writeb(hdmi, AUDIO_I2S_MODE, v_I2S_MODE(I2S_STANDARD) |
+ v_I2S_CHANNEL(channel));
+
+ hdmi_writeb(hdmi, AUDIO_I2S_MAP, 0x00);
+ hdmi_writeb(hdmi, AUDIO_I2S_SWAPS_SPDIF, 0);
+
+ /* Set N value */
+ hdmi_writeb(hdmi, AUDIO_N_H, (N >> 16) & 0x0F);
+ hdmi_writeb(hdmi, AUDIO_N_M, (N >> 8) & 0xFF);
+ hdmi_writeb(hdmi, AUDIO_N_L, N & 0xFF);
+
+ /*Set hdmi nlpcm mode to support hdmi bitstream*/
+ hdmi_writeb(hdmi, HDMI_AUDIO_CHANNEL_STATUS, v_AUDIO_STATUS_NLPCM(0));
+
+ return inno_hdmi_config_audio_aai(hdmi, audio);
+}
+
+static int inno_hdmi_audio_hw_params(struct device *dev,
+ struct hdmi_codec_daifmt *daifmt,
+ struct hdmi_codec_params *params)
+{
+ struct inno_hdmi *hdmi = dev_get_drvdata(dev);
+ struct audio_info audio = {
+ .sample_width = params->sample_width,
+ .sample_rate = params->sample_rate,
+ .channels = params->channels,
+ };
+
+ if (!hdmi->hdmi_data.sink_has_audio) {
+ dev_err(hdmi->dev, "Sink do not support audio!\n");
+ return -ENODEV;
+ }
+
+ if (!hdmi->encoder.crtc)
+ return -ENODEV;
+
+ switch (daifmt->fmt) {
+ case HDMI_I2S:
+ break;
+ default:
+ dev_err(dev, "%s: Invalid format %d\n", __func__, daifmt->fmt);
+ return -EINVAL;
+ }
+
+ return inno_hdmi_audio_config_set(hdmi, &audio);
+}
+
+static void inno_hdmi_audio_shutdown(struct device *dev)
+{
+ /* do nothing */
+}
+
+static int inno_hdmi_audio_digital_mute(struct device *dev, bool mute)
+{
+ struct inno_hdmi *hdmi = dev_get_drvdata(dev);
+
+ if (!hdmi->hdmi_data.sink_has_audio) {
+ dev_err(hdmi->dev, "Sink do not support audio!\n");
+ return -ENODEV;
+ }
+
+ hdmi->audio_enable = !mute;
+
+ if (mute)
+ hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_AUDIO_PD,
+ v_AUDIO_MUTE(1) | v_AUDIO_PD(1));
+ else
+ hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_AUDIO_PD,
+ v_AUDIO_MUTE(0) | v_AUDIO_PD(0));
+
+ return 0;
+}
+
+static int inno_hdmi_audio_get_eld(struct device *dev, uint8_t *buf, size_t len)
+{
+ struct inno_hdmi *hdmi = dev_get_drvdata(dev);
+ struct drm_mode_config *config = &hdmi->encoder.dev->mode_config;
+ struct drm_connector *connector;
+ int ret = -ENODEV;
+
+ mutex_lock(&config->mutex);
+ list_for_each_entry(connector, &config->connector_list, head) {
+ if (&hdmi->encoder == connector->encoder) {
+ memcpy(buf, connector->eld,
+ min(sizeof(connector->eld), len));
+ ret = 0;
+ }
+ }
+ mutex_unlock(&config->mutex);
+
+ return ret;
+}
+
+static const struct hdmi_codec_ops audio_codec_ops = {
+ .hw_params = inno_hdmi_audio_hw_params,
+ .audio_shutdown = inno_hdmi_audio_shutdown,
+ .digital_mute = inno_hdmi_audio_digital_mute,
+ .get_eld = inno_hdmi_audio_get_eld,
+};
+
+static int inno_hdmi_audio_codec_init(struct inno_hdmi *hdmi,
+ struct device *dev)
+{
+ struct hdmi_codec_pdata codec_data = {
+ .i2s = 1,
+ .ops = &audio_codec_ops,
+ .max_i2s_channels = 8,
+ };
+
+ hdmi->audio_enable = false;
+ hdmi->audio_pdev = platform_device_register_data(
+ dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_NONE,
+ &codec_data, sizeof(codec_data));
+
+ return PTR_ERR_OR_ZERO(hdmi->audio_pdev);
+}
+
static int inno_hdmi_register(struct drm_device *drm, struct inno_hdmi *hdmi)
{
struct drm_encoder *encoder = &hdmi->encoder;
@@ -645,6 +876,8 @@ static int inno_hdmi_register(struct drm_device *drm, struct inno_hdmi *hdmi)
drm_mode_connector_attach_encoder(&hdmi->connector, encoder);
+ inno_hdmi_audio_codec_init(hdmi, dev);
+
return 0;
}
diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.h b/drivers/gpu/drm/rockchip/inno_hdmi.h
index aa7c415..8b23037 100644
--- a/drivers/gpu/drm/rockchip/inno_hdmi.h
+++ b/drivers/gpu/drm/rockchip/inno_hdmi.h
@@ -104,11 +104,13 @@ enum {
#define HDMI_AV_MUTE 0x05
#define m_AVMUTE_CLEAR (1 << 7)
#define m_AVMUTE_ENABLE (1 << 6)
+#define m_AUDIO_PD (1 << 2)
#define m_AUDIO_MUTE (1 << 1)
#define m_VIDEO_BLACK (1 << 0)
#define v_AVMUTE_CLEAR(n) (n << 7)
#define v_AVMUTE_ENABLE(n) (n << 6)
#define v_AUDIO_MUTE(n) (n << 1)
+#define v_AUDIO_PD(n) (n << 2)
#define v_VIDEO_MUTE(n) (n << 0)
#define HDMI_VIDEO_TIMING_CTL 0x08
--
1.9.1
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