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ASoC: samsung: Add support for HDMI audio on TM2 board

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This patch defines I2S1 - HDMI DAI link and implements related
hw_params callback. The AUD PLL frequency is configured through
the CLK_SCLK_I2S1 leaf clock, the exynos5433 clock tree
definitions are updated in a separate patch.

The device tree parsing part is changed is a way it supports older
DTBs with just a single CPU DAI specified, without the HDMI link.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sylwester Nawrocki 2018-02-12 17:15:37 +01:00 committed by Mark Brown
parent 3a3ac1ea89
commit 8d1513cef5
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 129 additions and 23 deletions
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152
sound/soc/samsung/tm2_wm5110.c
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@ -210,6 +210,59 @@ static struct snd_soc_ops tm2_aif2_ops = {
.hw_free = tm2_aif2_hw_free,
};
static int tm2_hdmi_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
unsigned int bfs;
int bitwidth, ret;
bitwidth = snd_pcm_format_width(params_format(params));
if (bitwidth < 0) {
dev_err(rtd->card->dev, "Invalid bit-width: %d\n", bitwidth);
return bitwidth;
}
switch (bitwidth) {
case 48:
bfs = 64;
break;
case 16:
bfs = 32;
break;
default:
dev_err(rtd->card->dev, "Unsupported bit-width: %d\n", bitwidth);
return -EINVAL;
}
switch (params_rate(params)) {
case 48000:
case 96000:
case 192000:
break;
default:
dev_err(rtd->card->dev, "Unsupported sample rate: %d\n",
params_rate(params));
return -EINVAL;
}
ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_OPCLK,
0, SAMSUNG_I2S_OPCLK_PCLK);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_clkdiv(cpu_dai, SAMSUNG_I2S_DIV_BCLK, bfs);
if (ret < 0)
return ret;
return 0;
}
static struct snd_soc_ops tm2_hdmi_ops = {
.hw_params = tm2_hdmi_hw_params,
};
static int tm2_mic_bias(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
@ -405,6 +458,12 @@ static struct snd_soc_dai_link tm2_dai_links[] = {
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM,
.ignore_suspend = 1,
}, {
.name = "HDMI",
.stream_name = "i2s1",
.ops = &tm2_hdmi_ops,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS,
}
};
@ -412,7 +471,6 @@ static struct snd_soc_card tm2_card = {
.owner = THIS_MODULE,
.dai_link = tm2_dai_links,
.num_links = ARRAY_SIZE(tm2_dai_links),
.controls = tm2_controls,
.num_controls = ARRAY_SIZE(tm2_controls),
.dapm_widgets = tm2_dapm_widgets,
@ -426,11 +484,14 @@ static struct snd_soc_card tm2_card = {
static int tm2_probe(struct platform_device *pdev)
{
struct device_node *cpu_dai_node[2] = {};
struct device_node *codec_dai_node[2] = {};
const char *cells_name = NULL;
struct device *dev = &pdev->dev;
struct snd_soc_card *card = &tm2_card;
struct tm2_machine_priv *priv;
struct device_node *cpu_dai_node, *codec_dai_node;
int ret, i;
struct of_phandle_args args;
int num_codecs, ret, i;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
@ -464,47 +525,92 @@ static int tm2_probe(struct platform_device *pdev)
return -EINVAL;
}
cpu_dai_node = of_parse_phandle(dev->of_node, "i2s-controller", 0);
if (!cpu_dai_node) {
dev_err(dev, "i2s-controllers property invalid or missing\n");
ret = -EINVAL;
goto amp_node_put;
num_codecs = of_count_phandle_with_args(dev->of_node, "audio-codec",
NULL);
/* Skip the HDMI link if not specified in DT */
if (num_codecs > 1) {
card->num_links = ARRAY_SIZE(tm2_dai_links);
cells_name = "#sound-dai-cells";
} else {
card->num_links = ARRAY_SIZE(tm2_dai_links) - 1;
}
codec_dai_node = of_parse_phandle(dev->of_node, "audio-codec", 0);
if (!codec_dai_node) {
dev_err(dev, "audio-codec property invalid or missing\n");
ret = -EINVAL;
goto cpu_dai_node_put;
for (i = 0; i < num_codecs; i++) {
struct of_phandle_args args;
ret = of_parse_phandle_with_args(dev->of_node, "i2s-controller",
cells_name, i, &args);
if (!args.np) {
dev_err(dev, "i2s-controller property parse error: %d\n", i);
ret = -EINVAL;
goto dai_node_put;
}
cpu_dai_node[i] = args.np;
codec_dai_node[i] = of_parse_phandle(dev->of_node,
"audio-codec", i);
if (!codec_dai_node[i]) {
dev_err(dev, "audio-codec property parse error\n");
ret = -EINVAL;
goto dai_node_put;
}
}
/* Initialize WM5110 - I2S and HDMI - I2S1 DAI links */
for (i = 0; i < card->num_links; i++) {
unsigned int dai_index = 0; /* WM5110 */
card->dai_link[i].cpu_name = NULL;
card->dai_link[i].platform_name = NULL;
card->dai_link[i].codec_of_node = codec_dai_node;
card->dai_link[i].cpu_of_node = cpu_dai_node;
card->dai_link[i].platform_of_node = cpu_dai_node;
if (num_codecs > 1 && i == card->num_links - 1)
dai_index = 1; /* HDMI */
card->dai_link[i].codec_of_node = codec_dai_node[dai_index];
card->dai_link[i].cpu_of_node = cpu_dai_node[dai_index];
card->dai_link[i].platform_of_node = cpu_dai_node[dai_index];
}
if (num_codecs > 1) {
/* HDMI DAI link (I2S1) */
i = card->num_links - 1;
ret = of_parse_phandle_with_fixed_args(dev->of_node,
"audio-codec", 0, 1, &args);
if (ret) {
dev_err(dev, "audio-codec property parse error\n");
goto dai_node_put;
}
ret = snd_soc_get_dai_name(&args, &card->dai_link[i].codec_dai_name);
if (ret) {
dev_err(dev, "Unable to get codec_dai_name\n");
goto dai_node_put;
}
}
ret = devm_snd_soc_register_component(dev, &tm2_component,
tm2_ext_dai, ARRAY_SIZE(tm2_ext_dai));
if (ret < 0) {
dev_err(dev, "Failed to register component: %d\n", ret);
goto codec_dai_node_put;
goto dai_node_put;
}
ret = devm_snd_soc_register_card(dev, card);
if (ret < 0) {
dev_err(dev, "Failed to register card: %d\n", ret);
goto codec_dai_node_put;
goto dai_node_put;
}
dai_node_put:
for (i = 0; i < num_codecs; i++) {
of_node_put(codec_dai_node[i]);
of_node_put(cpu_dai_node[i]);
}
codec_dai_node_put:
of_node_put(codec_dai_node);
cpu_dai_node_put:
of_node_put(cpu_dai_node);
amp_node_put:
of_node_put(card->aux_dev[0].codec_of_node);
return ret;
}