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path: root/drivers/mfd/twl4030-audio.c
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Diffstat (limited to 'drivers/mfd/twl4030-audio.c')
-rw-r--r--drivers/mfd/twl4030-audio.c105
1 files changed, 70 insertions, 35 deletions
diff --git a/drivers/mfd/twl4030-audio.c b/drivers/mfd/twl4030-audio.c
index 77c9acb14583..5c11acf9e0fd 100644
--- a/drivers/mfd/twl4030-audio.c
+++ b/drivers/mfd/twl4030-audio.c
@@ -28,6 +28,8 @@
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
#include <linux/i2c/twl.h>
#include <linux/mfd/core.h>
#include <linux/mfd/twl4030-audio.h>
@@ -156,47 +158,70 @@ unsigned int twl4030_audio_get_mclk(void)
}
EXPORT_SYMBOL_GPL(twl4030_audio_get_mclk);
+static bool twl4030_audio_has_codec(struct twl4030_audio_data *pdata,
+ struct device_node *node)
+{
+ if (pdata && pdata->codec)
+ return true;
+
+ if (of_find_node_by_name(node, "codec"))
+ return true;
+
+ return false;
+}
+
+static bool twl4030_audio_has_vibra(struct twl4030_audio_data *pdata,
+ struct device_node *node)
+{
+ int vibra;
+
+ if (pdata && pdata->vibra)
+ return true;
+
+ if (!of_property_read_u32(node, "ti,enable-vibra", &vibra) && vibra)
+ return true;
+
+ return false;
+}
+
static int __devinit twl4030_audio_probe(struct platform_device *pdev)
{
struct twl4030_audio *audio;
struct twl4030_audio_data *pdata = pdev->dev.platform_data;
+ struct device_node *node = pdev->dev.of_node;
struct mfd_cell *cell = NULL;
int ret, childs = 0;
u8 val;
- if (!pdata) {
+ if (!pdata && !node) {
dev_err(&pdev->dev, "Platform data is missing\n");
return -EINVAL;
}
+ audio = devm_kzalloc(&pdev->dev, sizeof(struct twl4030_audio),
+ GFP_KERNEL);
+ if (!audio)
+ return -ENOMEM;
+
+ mutex_init(&audio->mutex);
+ audio->audio_mclk = twl_get_hfclk_rate();
+
/* Configure APLL_INFREQ and disable APLL if enabled */
- val = 0;
- switch (pdata->audio_mclk) {
+ switch (audio->audio_mclk) {
case 19200000:
- val |= TWL4030_APLL_INFREQ_19200KHZ;
+ val = TWL4030_APLL_INFREQ_19200KHZ;
break;
case 26000000:
- val |= TWL4030_APLL_INFREQ_26000KHZ;
+ val = TWL4030_APLL_INFREQ_26000KHZ;
break;
case 38400000:
- val |= TWL4030_APLL_INFREQ_38400KHZ;
+ val = TWL4030_APLL_INFREQ_38400KHZ;
break;
default:
dev_err(&pdev->dev, "Invalid audio_mclk\n");
return -EINVAL;
}
- twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE,
- val, TWL4030_REG_APLL_CTL);
-
- audio = kzalloc(sizeof(struct twl4030_audio), GFP_KERNEL);
- if (!audio)
- return -ENOMEM;
-
- platform_set_drvdata(pdev, audio);
-
- twl4030_audio_dev = pdev;
- mutex_init(&audio->mutex);
- audio->audio_mclk = pdata->audio_mclk;
+ twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE, val, TWL4030_REG_APLL_CTL);
/* Codec power */
audio->resource[TWL4030_AUDIO_RES_POWER].reg = TWL4030_REG_CODEC_MODE;
@@ -206,21 +231,28 @@ static int __devinit twl4030_audio_probe(struct platform_device *pdev)
audio->resource[TWL4030_AUDIO_RES_APLL].reg = TWL4030_REG_APLL_CTL;
audio->resource[TWL4030_AUDIO_RES_APLL].mask = TWL4030_APLL_EN;
- if (pdata->codec) {
+ if (twl4030_audio_has_codec(pdata, node)) {
cell = &audio->cells[childs];
cell->name = "twl4030-codec";
- cell->platform_data = pdata->codec;
- cell->pdata_size = sizeof(*pdata->codec);
+ if (pdata) {
+ cell->platform_data = pdata->codec;
+ cell->pdata_size = sizeof(*pdata->codec);
+ }
childs++;
}
- if (pdata->vibra) {
+ if (twl4030_audio_has_vibra(pdata, node)) {
cell = &audio->cells[childs];
cell->name = "twl4030-vibra";
- cell->platform_data = pdata->vibra;
- cell->pdata_size = sizeof(*pdata->vibra);
+ if (pdata) {
+ cell->platform_data = pdata->vibra;
+ cell->pdata_size = sizeof(*pdata->vibra);
+ }
childs++;
}
+ platform_set_drvdata(pdev, audio);
+ twl4030_audio_dev = pdev;
+
if (childs)
ret = mfd_add_devices(&pdev->dev, pdev->id, audio->cells,
childs, NULL, 0, NULL);
@@ -229,39 +261,42 @@ static int __devinit twl4030_audio_probe(struct platform_device *pdev)
ret = -ENODEV;
}
- if (!ret)
- return 0;
+ if (ret) {
+ platform_set_drvdata(pdev, NULL);
+ twl4030_audio_dev = NULL;
+ }
- platform_set_drvdata(pdev, NULL);
- kfree(audio);
- twl4030_audio_dev = NULL;
return ret;
}
static int __devexit twl4030_audio_remove(struct platform_device *pdev)
{
- struct twl4030_audio *audio = platform_get_drvdata(pdev);
-
mfd_remove_devices(&pdev->dev);
platform_set_drvdata(pdev, NULL);
- kfree(audio);
twl4030_audio_dev = NULL;
return 0;
}
-MODULE_ALIAS("platform:twl4030-audio");
+static const struct of_device_id twl4030_audio_of_match[] = {
+ {.compatible = "ti,twl4030-audio", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, twl4030_audio_of_match);
static struct platform_driver twl4030_audio_driver = {
- .probe = twl4030_audio_probe,
- .remove = __devexit_p(twl4030_audio_remove),
.driver = {
.owner = THIS_MODULE,
.name = "twl4030-audio",
+ .of_match_table = twl4030_audio_of_match,
},
+ .probe = twl4030_audio_probe,
+ .remove = __devexit_p(twl4030_audio_remove),
};
module_platform_driver(twl4030_audio_driver);
MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
+MODULE_DESCRIPTION("TWL4030 audio block MFD driver");
MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:twl4030-audio");