[alsa-devel] [PATCH RFC v5 6/8] drm/i2c: tda998x: Improve tda998x_configure_audio() audio related pdata
Jyri Sarha
jsarha at ti.com
Wed Feb 17 15:49:07 CET 2016
Declare struct tda998x_audio_params in include/drm/i2c/tda998x.h and
use it in pdata and for tda998x_configure_audio() parameters. Also
updates tda998x_write_aif() to take struct hdmi_audio_infoframe *
directly as a parameter.
Signed-off-by: Jyri Sarha <jsarha at ti.com>
---
drivers/gpu/drm/i2c/tda998x_drv.c | 106 +++++++++++++++++++++-----------------
include/drm/i2c/tda998x.h | 23 +++++----
2 files changed, 73 insertions(+), 56 deletions(-)
diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
index b534f94..42d256a 100644
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -46,7 +46,7 @@ struct tda998x_priv {
u8 vip_cntrl_0;
u8 vip_cntrl_1;
u8 vip_cntrl_2;
- struct tda998x_encoder_params params;
+ struct tda998x_audio_params audio_params;
wait_queue_head_t wq_edid;
volatile int wq_edid_wait;
@@ -673,26 +673,16 @@ tda998x_write_if(struct tda998x_priv *priv, u8 bit, u16 addr,
reg_set(priv, REG_DIP_IF_FLAGS, bit);
}
-static void
-tda998x_write_aif(struct tda998x_priv *priv, struct tda998x_encoder_params *p)
+static int tda998x_write_aif(struct tda998x_priv *priv,
+ struct hdmi_audio_infoframe *cea)
{
union hdmi_infoframe frame;
- hdmi_audio_infoframe_init(&frame.audio);
-
- frame.audio.channels = p->audio_frame[1] & 0x07;
- frame.audio.channel_allocation = p->audio_frame[4];
- frame.audio.level_shift_value = (p->audio_frame[5] & 0x78) >> 3;
- frame.audio.downmix_inhibit = (p->audio_frame[5] & 0x80) >> 7;
-
- /*
- * L-PCM and IEC61937 compressed audio shall always set sample
- * frequency to "refer to stream". For others, see the HDMI
- * specification.
- */
- frame.audio.sample_frequency = (p->audio_frame[2] & 0x1c) >> 2;
+ frame.audio = *cea;
tda998x_write_if(priv, DIP_IF_FLAGS_IF4, REG_IF4_HB0, &frame);
+
+ return 0;
}
static void
@@ -717,19 +707,20 @@ static void tda998x_audio_mute(struct tda998x_priv *priv, bool on)
}
}
-static void
+static int
tda998x_configure_audio(struct tda998x_priv *priv,
- struct drm_display_mode *mode, struct tda998x_encoder_params *p)
+ struct tda998x_audio_params *params,
+ unsigned mode_clock)
{
u8 buf[6], clksel_aip, clksel_fs, cts_n, adiv;
u32 n;
/* Enable audio ports */
- reg_write(priv, REG_ENA_AP, p->audio_cfg);
- reg_write(priv, REG_ENA_ACLK, p->audio_clk_cfg);
+ reg_write(priv, REG_ENA_AP, params->config);
+ reg_write(priv, REG_ENA_ACLK, params->format == AFMT_SPDIF ? 0 : 1);
/* Set audio input source */
- switch (p->audio_format) {
+ switch (params->format) {
case AFMT_SPDIF:
reg_write(priv, REG_MUX_AP, MUX_AP_SELECT_SPDIF);
clksel_aip = AIP_CLKSEL_AIP_SPDIF;
@@ -741,12 +732,25 @@ tda998x_configure_audio(struct tda998x_priv *priv,
reg_write(priv, REG_MUX_AP, MUX_AP_SELECT_I2S);
clksel_aip = AIP_CLKSEL_AIP_I2S;
clksel_fs = AIP_CLKSEL_FS_ACLK;
- cts_n = CTS_N_M(3) | CTS_N_K(3);
+ switch (params->sample_width) {
+ case 16:
+ cts_n = CTS_N_M(3) | CTS_N_K(1);
+ break;
+ case 18:
+ case 20:
+ case 24:
+ cts_n = CTS_N_M(3) | CTS_N_K(2);
+ break;
+ default:
+ case 32:
+ cts_n = CTS_N_M(3) | CTS_N_K(3);
+ break;
+ }
break;
default:
BUG();
- return;
+ return -EINVAL;
}
reg_write(priv, REG_AIP_CLKSEL, clksel_aip);
@@ -762,11 +766,11 @@ tda998x_configure_audio(struct tda998x_priv *priv,
* assume 100MHz requires larger divider.
*/
adiv = AUDIO_DIV_SERCLK_8;
- if (mode->clock > 100000)
+ if (mode_clock > 100000)
adiv++; /* AUDIO_DIV_SERCLK_16 */
/* S/PDIF asks for a larger divider */
- if (p->audio_format == AFMT_SPDIF)
+ if (params->format == AFMT_SPDIF)
adiv++; /* AUDIO_DIV_SERCLK_16 or _32 */
reg_write(priv, REG_AUDIO_DIV, adiv);
@@ -775,7 +779,7 @@ tda998x_configure_audio(struct tda998x_priv *priv,
* This is the approximate value of N, which happens to be
* the recommended values for non-coherent clocks.
*/
- n = 128 * p->audio_sample_rate / 1000;
+ n = 128 * params->sample_rate / 1000;
/* Write the CTS and N values */
buf[0] = 0x44;
@@ -794,19 +798,13 @@ tda998x_configure_audio(struct tda998x_priv *priv,
reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_CTS);
/* Write the channel status */
- buf[0] = IEC958_AES0_CON_NOT_COPYRIGHT;
- buf[1] = 0x00;
- buf[2] = IEC958_AES3_CON_FS_NOTID;
- buf[3] = IEC958_AES4_CON_ORIGFS_NOTID |
- IEC958_AES4_CON_MAX_WORDLEN_24;
- reg_write_range(priv, REG_CH_STAT_B(0), buf, 4);
+ reg_write_range(priv, REG_CH_STAT_B(0), params->status, 4);
tda998x_audio_mute(priv, true);
msleep(20);
tda998x_audio_mute(priv, false);
- /* Write the audio information packet */
- tda998x_write_aif(priv, p);
+ return tda998x_write_aif(priv, ¶ms->cea);
}
/* DRM encoder functions */
@@ -827,9 +825,7 @@ static void tda998x_encoder_set_config(struct tda998x_priv *priv,
VIP_CNTRL_2_SWAP_F(p->swap_f) |
(p->mirr_f ? VIP_CNTRL_2_MIRR_F : 0);
- priv->params = *p;
- priv->audio.port_types[0] = p->audio_format;
- priv->audio.ports[0] = p->audio_cfg;
+ priv->audio_params = p->audio;
}
static void tda998x_encoder_dpms(struct drm_encoder *encoder, int mode)
@@ -1074,9 +1070,11 @@ tda998x_encoder_mode_set(struct drm_encoder *encoder,
tda998x_write_avi(priv, adjusted_mode);
- if (priv->params.audio_cfg)
- tda998x_configure_audio(priv, adjusted_mode,
- &priv->params);
+ if (priv->audio_params.config) {
+ tda998x_configure_audio(priv,
+ &priv->audio_params,
+ adjusted_mode->clock);
+ }
}
}
@@ -1388,12 +1386,28 @@ static int tda998x_create(struct i2c_client *client, struct tda998x_priv *priv)
}
}
if (priv->audio.ports[0]) {
- priv->params.audio_cfg = priv->audio.ports[0];
- priv->params.audio_format =
- priv->audio.port_types[0];
- priv->params.audio_clk_cfg =
- priv->params.audio_format ==
- AFMT_SPDIF ? 0 : 1;
+ struct tda998x_audio_params params = {
+ .config = priv->audio.ports[0],
+ .format = priv->audio.port_types[0],
+ .sample_width = 24,
+ .sample_rate = 44100,
+ .cea = {
+ .channels = 2,
+ .coding_type = HDMI_AUDIO_CODING_TYPE_STREAM,
+ .sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM,
+ .sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM,
+ },
+ .status = {
+ IEC958_AES0_CON_NOT_COPYRIGHT,
+ IEC958_AES1_CON_GENERAL,
+ IEC958_AES2_CON_SOURCE_UNSPEC |
+ IEC958_AES2_CON_CHANNEL_UNSPEC,
+ IEC958_AES3_CON_CLOCK_1000PPM |
+ IEC958_AES3_CON_FS_NOTID,
+ },
+ };
+
+ priv->audio_params = params;
}
}
diff --git a/include/drm/i2c/tda998x.h b/include/drm/i2c/tda998x.h
index 3e419d9..dfe7829 100644
--- a/include/drm/i2c/tda998x.h
+++ b/include/drm/i2c/tda998x.h
@@ -1,6 +1,18 @@
#ifndef __DRM_I2C_TDA998X_H__
#define __DRM_I2C_TDA998X_H__
+struct tda998x_audio_params {
+ u8 config;
+ enum {
+ AFMT_SPDIF,
+ AFMT_I2S
+ } format;
+ unsigned sample_width;
+ unsigned sample_rate;
+ struct hdmi_audio_infoframe cea;
+ u8 status[4];
+};
+
struct tda998x_encoder_params {
u8 swap_b:3;
u8 mirr_b:1;
@@ -15,16 +27,7 @@ struct tda998x_encoder_params {
u8 swap_e:3;
u8 mirr_e:1;
- u8 audio_cfg;
- u8 audio_clk_cfg;
- u8 audio_frame[6];
-
- enum {
- AFMT_SPDIF,
- AFMT_I2S
- } audio_format;
-
- unsigned audio_sample_rate;
+ struct tda998x_audio_params audio;
};
#endif
--
1.9.1
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