diff options
author | Russell King <rmk+kernel@armlinux.org.uk> | 2019-03-01 15:14:14 +0100 |
---|---|---|
committer | Russell King <rmk+kernel@armlinux.org.uk> | 2019-06-13 22:54:27 +0200 |
commit | 2e9943aab5680ec7bce07f4b980e5e2a86ff294a (patch) | |
tree | 22027d4dc66ab84c903cfa01c9f1b8376a074835 /drivers/gpu/drm/i2c | |
parent | Linux 5.1 (diff) | |
download | linux-2e9943aab5680ec7bce07f4b980e5e2a86ff294a.tar.xz linux-2e9943aab5680ec7bce07f4b980e5e2a86ff294a.zip |
drm/i2c: tda998x: introduce tda998x_audio_settings
Introduce a structure to hold the register values to be programmed while
programming the TDA998x audio settings. This is currently a stub
structure, which will be populated in subsequent commits.
When we initialise this from the platform data, only do so if there is a
valid audio format specification.
Tested-by: Sven Van Asbroeck <TheSven73@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'drivers/gpu/drm/i2c')
-rw-r--r-- | drivers/gpu/drm/i2c/tda998x_drv.c | 68 |
1 files changed, 37 insertions, 31 deletions
diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c index 7f34601bb515..0668fb3537f2 100644 --- a/drivers/gpu/drm/i2c/tda998x_drv.c +++ b/drivers/gpu/drm/i2c/tda998x_drv.c @@ -40,6 +40,10 @@ struct tda998x_audio_port { u8 config; /* AP value */ }; +struct tda998x_audio_settings { + struct tda998x_audio_params params; +}; + struct tda998x_priv { struct i2c_client *cec; struct i2c_client *hdmi; @@ -54,7 +58,7 @@ struct tda998x_priv { u8 vip_cntrl_1; u8 vip_cntrl_2; unsigned long tmds_clock; - struct tda998x_audio_params audio_params; + struct tda998x_audio_settings audio; struct platform_device *audio_pdev; struct mutex audio_mutex; @@ -833,7 +837,7 @@ tda998x_write_if(struct tda998x_priv *priv, u8 bit, u16 addr, } static int tda998x_write_aif(struct tda998x_priv *priv, - struct hdmi_audio_infoframe *cea) + const struct hdmi_audio_infoframe *cea) { union hdmi_infoframe frame; @@ -869,18 +873,17 @@ static void tda998x_audio_mute(struct tda998x_priv *priv, bool on) } } -static int -tda998x_configure_audio(struct tda998x_priv *priv, - struct tda998x_audio_params *params) +static int tda998x_configure_audio(struct tda998x_priv *priv, + const struct tda998x_audio_settings *settings) { u8 buf[6], clksel_aip, clksel_fs, cts_n, adiv; u32 n; /* Enable audio ports */ - reg_write(priv, REG_ENA_AP, params->config); + reg_write(priv, REG_ENA_AP, settings->params.config); /* Set audio input source */ - switch (params->format) { + switch (settings->params.format) { case AFMT_SPDIF: reg_write(priv, REG_ENA_ACLK, 0); reg_write(priv, REG_MUX_AP, MUX_AP_SELECT_SPDIF); @@ -894,7 +897,7 @@ 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; - switch (params->sample_width) { + switch (settings->params.sample_width) { case 16: cts_n = CTS_N_M(3) | CTS_N_K(1); break; @@ -932,7 +935,7 @@ tda998x_configure_audio(struct tda998x_priv *priv, adiv++; /* AUDIO_DIV_SERCLK_16 */ /* S/PDIF asks for a larger divider */ - if (params->format == AFMT_SPDIF) + if (settings->params.format == AFMT_SPDIF) adiv++; /* AUDIO_DIV_SERCLK_16 or _32 */ reg_write(priv, REG_AUDIO_DIV, adiv); @@ -941,7 +944,7 @@ 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 * params->sample_rate / 1000; + n = 128 * settings->params.sample_rate / 1000; /* Write the CTS and N values */ buf[0] = 0x44; @@ -963,17 +966,17 @@ tda998x_configure_audio(struct tda998x_priv *priv, * The REG_CH_STAT_B-registers skip IEC958 AES2 byte, because * there is a separate register for each I2S wire. */ - buf[0] = params->status[0]; - buf[1] = params->status[1]; - buf[2] = params->status[3]; - buf[3] = params->status[4]; + buf[0] = settings->params.status[0]; + buf[1] = settings->params.status[1]; + buf[2] = settings->params.status[3]; + buf[3] = settings->params.status[4]; reg_write_range(priv, REG_CH_STAT_B(0), buf, 4); tda998x_audio_mute(priv, true); msleep(20); tda998x_audio_mute(priv, false); - return tda998x_write_aif(priv, ¶ms->cea); + return tda998x_write_aif(priv, &settings->params.cea); } static int tda998x_audio_hw_params(struct device *dev, void *data, @@ -982,14 +985,16 @@ static int tda998x_audio_hw_params(struct device *dev, void *data, { struct tda998x_priv *priv = dev_get_drvdata(dev); int i, ret; - struct tda998x_audio_params audio = { - .sample_width = params->sample_width, - .sample_rate = params->sample_rate, - .cea = params->cea, + struct tda998x_audio_settings audio = { + .params = { + .sample_width = params->sample_width, + .sample_rate = params->sample_rate, + .cea = params->cea, + }, }; - memcpy(audio.status, params->iec.status, - min(sizeof(audio.status), sizeof(params->iec.status))); + memcpy(audio.params.status, params->iec.status, + min(sizeof(audio.params.status), sizeof(params->iec.status))); switch (daifmt->fmt) { case HDMI_I2S: @@ -1003,21 +1008,21 @@ static int tda998x_audio_hw_params(struct device *dev, void *data, } for (i = 0; i < ARRAY_SIZE(priv->audio_port); i++) if (priv->audio_port[i].format == AFMT_I2S) - audio.config = priv->audio_port[i].config; - audio.format = AFMT_I2S; + audio.params.config = priv->audio_port[i].config; + audio.params.format = AFMT_I2S; break; case HDMI_SPDIF: for (i = 0; i < ARRAY_SIZE(priv->audio_port); i++) if (priv->audio_port[i].format == AFMT_SPDIF) - audio.config = priv->audio_port[i].config; - audio.format = AFMT_SPDIF; + audio.params.config = priv->audio_port[i].config; + audio.params.format = AFMT_SPDIF; break; default: dev_err(dev, "%s: Invalid format %d\n", __func__, daifmt->fmt); return -EINVAL; } - if (audio.config == 0) { + if (audio.params.config == 0) { dev_err(dev, "%s: No audio configuration found\n", __func__); return -EINVAL; } @@ -1029,7 +1034,7 @@ static int tda998x_audio_hw_params(struct device *dev, void *data, ret = 0; if (ret == 0) - priv->audio_params = audio; + priv->audio = audio; mutex_unlock(&priv->audio_mutex); return ret; @@ -1043,7 +1048,7 @@ static void tda998x_audio_shutdown(struct device *dev, void *data) reg_write(priv, REG_ENA_AP, 0); - priv->audio_params.format = AFMT_UNUSED; + priv->audio.params.format = AFMT_UNUSED; mutex_unlock(&priv->audio_mutex); } @@ -1549,9 +1554,9 @@ static void tda998x_bridge_mode_set(struct drm_bridge *bridge, tda998x_write_avi(priv, adjusted_mode); - if (priv->audio_params.format != AFMT_UNUSED && + if (priv->audio.params.format != AFMT_UNUSED && priv->sink_has_audio) - tda998x_configure_audio(priv, &priv->audio_params); + tda998x_configure_audio(priv, &priv->audio); } mutex_unlock(&priv->audio_mutex); @@ -1626,7 +1631,8 @@ static void tda998x_set_config(struct tda998x_priv *priv, VIP_CNTRL_2_SWAP_F(p->swap_f) | (p->mirr_f ? VIP_CNTRL_2_MIRR_F : 0); - priv->audio_params = p->audio_params; + if (p->audio_params.format != AFMT_UNUSED) + priv->audio.params = p->audio_params; } static void tda998x_destroy(struct device *dev) |