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Diffstat (limited to 'sound/soc/kirkwood/kirkwood-i2s.c')
-rw-r--r--sound/soc/kirkwood/kirkwood-i2s.c94
1 files changed, 54 insertions, 40 deletions
diff --git a/sound/soc/kirkwood/kirkwood-i2s.c b/sound/soc/kirkwood/kirkwood-i2s.c
index 4c9dad3263c5..0f3d73d4ef48 100644
--- a/sound/soc/kirkwood/kirkwood-i2s.c
+++ b/sound/soc/kirkwood/kirkwood-i2s.c
@@ -22,13 +22,12 @@
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <linux/platform_data/asoc-kirkwood.h>
+#include <linux/of.h>
+
#include "kirkwood.h"
-#define DRV_NAME "kirkwood-i2s"
+#define DRV_NAME "mvebu-audio"
-#define KIRKWOOD_I2S_RATES \
- (SNDRV_PCM_RATE_44100 | \
- SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000)
#define KIRKWOOD_I2S_FORMATS \
(SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S24_LE | \
@@ -105,14 +104,16 @@ static void kirkwood_set_rate(struct snd_soc_dai *dai,
uint32_t clks_ctrl;
if (rate == 44100 || rate == 48000 || rate == 96000) {
- /* use internal dco for supported rates */
+ /* use internal dco for the supported rates
+ * defined in kirkwood_i2s_dai */
dev_dbg(dai->dev, "%s: dco set rate = %lu\n",
__func__, rate);
kirkwood_set_dco(priv->io, rate);
clks_ctrl = KIRKWOOD_MCLK_SOURCE_DCO;
- } else if (!IS_ERR(priv->extclk)) {
- /* use optional external clk for other rates */
+ } else {
+ /* use the external clock for the other rates
+ * defined in kirkwood_i2s_dai_extclk */
dev_dbg(dai->dev, "%s: extclk set rate = %lu -> %lu\n",
__func__, rate, 256 * rate);
clk_set_rate(priv->extclk, 256 * rate);
@@ -199,8 +200,7 @@ static int kirkwood_i2s_hw_params(struct snd_pcm_substream *substream,
ctl_play |= KIRKWOOD_PLAYCTL_MONO_OFF;
priv->ctl_play &= ~(KIRKWOOD_PLAYCTL_MONO_MASK |
- KIRKWOOD_PLAYCTL_I2S_EN |
- KIRKWOOD_PLAYCTL_SPDIF_EN |
+ KIRKWOOD_PLAYCTL_ENABLE_MASK |
KIRKWOOD_PLAYCTL_SIZE_MASK);
priv->ctl_play |= ctl_play;
} else {
@@ -244,8 +244,7 @@ static int kirkwood_i2s_play_trigger(struct snd_pcm_substream *substream,
case SNDRV_PCM_TRIGGER_START:
/* configure */
ctl = priv->ctl_play;
- value = ctl & ~(KIRKWOOD_PLAYCTL_I2S_EN |
- KIRKWOOD_PLAYCTL_SPDIF_EN);
+ value = ctl & ~KIRKWOOD_PLAYCTL_ENABLE_MASK;
writel(value, priv->io + KIRKWOOD_PLAYCTL);
/* enable interrupts */
@@ -267,7 +266,7 @@ static int kirkwood_i2s_play_trigger(struct snd_pcm_substream *substream,
writel(value, priv->io + KIRKWOOD_INT_MASK);
/* disable all playbacks */
- ctl &= ~(KIRKWOOD_PLAYCTL_I2S_EN | KIRKWOOD_PLAYCTL_SPDIF_EN);
+ ctl &= ~KIRKWOOD_PLAYCTL_ENABLE_MASK;
writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
break;
@@ -387,7 +386,7 @@ static int kirkwood_i2s_probe(struct snd_soc_dai *dai)
/* disable playback/record */
value = readl(priv->io + KIRKWOOD_PLAYCTL);
- value &= ~(KIRKWOOD_PLAYCTL_I2S_EN|KIRKWOOD_PLAYCTL_SPDIF_EN);
+ value &= ~KIRKWOOD_PLAYCTL_ENABLE_MASK;
writel(value, priv->io + KIRKWOOD_PLAYCTL);
value = readl(priv->io + KIRKWOOD_RECCTL);
@@ -398,11 +397,6 @@ static int kirkwood_i2s_probe(struct snd_soc_dai *dai)
}
-static int kirkwood_i2s_remove(struct snd_soc_dai *dai)
-{
- return 0;
-}
-
static const struct snd_soc_dai_ops kirkwood_i2s_dai_ops = {
.startup = kirkwood_i2s_startup,
.trigger = kirkwood_i2s_trigger,
@@ -413,17 +407,18 @@ static const struct snd_soc_dai_ops kirkwood_i2s_dai_ops = {
static struct snd_soc_dai_driver kirkwood_i2s_dai = {
.probe = kirkwood_i2s_probe,
- .remove = kirkwood_i2s_remove,
.playback = {
.channels_min = 1,
.channels_max = 2,
- .rates = KIRKWOOD_I2S_RATES,
+ .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000,
.formats = KIRKWOOD_I2S_FORMATS,
},
.capture = {
.channels_min = 1,
.channels_max = 2,
- .rates = KIRKWOOD_I2S_RATES,
+ .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000,
.formats = KIRKWOOD_I2S_FORMATS,
},
.ops = &kirkwood_i2s_dai_ops,
@@ -431,7 +426,6 @@ static struct snd_soc_dai_driver kirkwood_i2s_dai = {
static struct snd_soc_dai_driver kirkwood_i2s_dai_extclk = {
.probe = kirkwood_i2s_probe,
- .remove = kirkwood_i2s_remove,
.playback = {
.channels_min = 1,
.channels_max = 2,
@@ -461,6 +455,7 @@ static int kirkwood_i2s_dev_probe(struct platform_device *pdev)
struct snd_soc_dai_driver *soc_dai = &kirkwood_i2s_dai;
struct kirkwood_dma_data *priv;
struct resource *mem;
+ struct device_node *np = pdev->dev.of_node;
int err;
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
@@ -481,14 +476,16 @@ static int kirkwood_i2s_dev_probe(struct platform_device *pdev)
return -ENXIO;
}
- if (!data) {
- dev_err(&pdev->dev, "no platform data ?!\n");
+ if (np) {
+ priv->burst = 128; /* might be 32 or 128 */
+ } else if (data) {
+ priv->burst = data->burst;
+ } else {
+ dev_err(&pdev->dev, "no DT nor platform data ?!\n");
return -EINVAL;
}
- priv->burst = data->burst;
-
- priv->clk = devm_clk_get(&pdev->dev, NULL);
+ priv->clk = devm_clk_get(&pdev->dev, np ? "internal" : NULL);
if (IS_ERR(priv->clk)) {
dev_err(&pdev->dev, "no clock\n");
return PTR_ERR(priv->clk);
@@ -498,10 +495,10 @@ static int kirkwood_i2s_dev_probe(struct platform_device *pdev)
if (err < 0)
return err;
- priv->extclk = clk_get(&pdev->dev, "extclk");
+ priv->extclk = devm_clk_get(&pdev->dev, "extclk");
if (!IS_ERR(priv->extclk)) {
if (priv->extclk == priv->clk) {
- clk_put(priv->extclk);
+ devm_clk_put(&pdev->dev, priv->extclk);
priv->extclk = ERR_PTR(-EINVAL);
} else {
dev_info(&pdev->dev, "found external clock\n");
@@ -515,7 +512,7 @@ static int kirkwood_i2s_dev_probe(struct platform_device *pdev)
priv->ctl_rec = KIRKWOOD_RECCTL_SIZE_24;
/* Select the burst size */
- if (data->burst == 32) {
+ if (priv->burst == 32) {
priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_32;
priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_32;
} else {
@@ -525,14 +522,22 @@ static int kirkwood_i2s_dev_probe(struct platform_device *pdev)
err = snd_soc_register_component(&pdev->dev, &kirkwood_i2s_component,
soc_dai, 1);
- if (!err)
- return 0;
- dev_err(&pdev->dev, "snd_soc_register_component failed\n");
+ if (err) {
+ dev_err(&pdev->dev, "snd_soc_register_component failed\n");
+ goto err_component;
+ }
- if (!IS_ERR(priv->extclk)) {
- clk_disable_unprepare(priv->extclk);
- clk_put(priv->extclk);
+ err = snd_soc_register_platform(&pdev->dev, &kirkwood_soc_platform);
+ if (err) {
+ dev_err(&pdev->dev, "snd_soc_register_platform failed\n");
+ goto err_platform;
}
+ return 0;
+ err_platform:
+ snd_soc_unregister_component(&pdev->dev);
+ err_component:
+ if (!IS_ERR(priv->extclk))
+ clk_disable_unprepare(priv->extclk);
clk_disable_unprepare(priv->clk);
return err;
@@ -542,23 +547,32 @@ static int kirkwood_i2s_dev_remove(struct platform_device *pdev)
{
struct kirkwood_dma_data *priv = dev_get_drvdata(&pdev->dev);
+ snd_soc_unregister_platform(&pdev->dev);
snd_soc_unregister_component(&pdev->dev);
- if (!IS_ERR(priv->extclk)) {
+ if (!IS_ERR(priv->extclk))
clk_disable_unprepare(priv->extclk);
- clk_put(priv->extclk);
- }
clk_disable_unprepare(priv->clk);
return 0;
}
+#ifdef CONFIG_OF
+static struct of_device_id mvebu_audio_of_match[] = {
+ { .compatible = "marvell,kirkwood-audio" },
+ { .compatible = "marvell,dove-audio" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, mvebu_audio_of_match);
+#endif
+
static struct platform_driver kirkwood_i2s_driver = {
.probe = kirkwood_i2s_dev_probe,
.remove = kirkwood_i2s_dev_remove,
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(mvebu_audio_of_match),
},
};
@@ -568,4 +582,4 @@ module_platform_driver(kirkwood_i2s_driver);
MODULE_AUTHOR("Arnaud Patard, <arnaud.patard@rtp-net.org>");
MODULE_DESCRIPTION("Kirkwood I2S SoC Interface");
MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:kirkwood-i2s");
+MODULE_ALIAS("platform:mvebu-audio");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.