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authorPeter Ujfalusi <peter.ujfalusi@ti.com>2012-08-16 17:41:08 +0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-08-22 23:17:18 +0400
commit11dd586421b3091007e6f084a9211f3baa66f9fc (patch)
tree5e4e33a7ed3d006065433b9d0fbe33ddb9273365 /sound/soc/omap/omap-mcbsp.c
parente586e955aa47f9b4afe6e665798fd2cb074a90f4 (diff)
downloadlinux-11dd586421b3091007e6f084a9211f3baa66f9fc.tar.xz
ASoC: omap-mcbsp: Add device tree bindings
Device tree support for McBSP modules on OMAP2+ SoC. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/omap/omap-mcbsp.c')
-rw-r--r--sound/soc/omap/omap-mcbsp.c66
1 files changed, 65 insertions, 1 deletions
diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c
index b9770eea28a0..2e1750e2ab31 100644
--- a/sound/soc/omap/omap-mcbsp.c
+++ b/sound/soc/omap/omap-mcbsp.c
@@ -26,6 +26,8 @@
#include <linux/module.h>
#include <linux/device.h>
#include <linux/pm_runtime.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
@@ -737,13 +739,74 @@ int omap_mcbsp_st_add_controls(struct snd_soc_pcm_runtime *rtd)
}
EXPORT_SYMBOL_GPL(omap_mcbsp_st_add_controls);
+static struct omap_mcbsp_platform_data omap2420_pdata = {
+ .reg_step = 4,
+ .reg_size = 2,
+};
+
+static struct omap_mcbsp_platform_data omap2430_pdata = {
+ .reg_step = 4,
+ .reg_size = 4,
+ .has_ccr = true,
+};
+
+static struct omap_mcbsp_platform_data omap3_pdata = {
+ .reg_step = 4,
+ .reg_size = 4,
+ .has_ccr = true,
+ .has_wakeup = true,
+};
+
+static struct omap_mcbsp_platform_data omap4_pdata = {
+ .reg_step = 4,
+ .reg_size = 4,
+ .has_ccr = true,
+ .has_wakeup = true,
+};
+
+static const struct of_device_id omap_mcbsp_of_match[] = {
+ {
+ .compatible = "ti,omap2420-mcbsp",
+ .data = &omap2420_pdata,
+ },
+ {
+ .compatible = "ti,omap2430-mcbsp",
+ .data = &omap2430_pdata,
+ },
+ {
+ .compatible = "ti,omap3-mcbsp",
+ .data = &omap3_pdata,
+ },
+ {
+ .compatible = "ti,omap4-mcbsp",
+ .data = &omap4_pdata,
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(of, omap_mcbsp_of_match);
+
static __devinit int asoc_mcbsp_probe(struct platform_device *pdev)
{
struct omap_mcbsp_platform_data *pdata = dev_get_platdata(&pdev->dev);
struct omap_mcbsp *mcbsp;
+ const struct of_device_id *match;
int ret;
- if (!pdata) {
+ match = of_match_device(omap_mcbsp_of_match, &pdev->dev);
+ if (match) {
+ struct device_node *node = pdev->dev.of_node;
+ int buffer_size;
+
+ pdata = devm_kzalloc(&pdev->dev,
+ sizeof(struct omap_mcbsp_platform_data),
+ GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
+
+ memcpy(pdata, match->data, sizeof(*pdata));
+ if (!of_property_read_u32(node, "ti,buffer-size", &buffer_size))
+ pdata->buffer_size = buffer_size;
+ } else if (!pdata) {
dev_err(&pdev->dev, "missing platform data.\n");
return -EINVAL;
}
@@ -785,6 +848,7 @@ static struct platform_driver asoc_mcbsp_driver = {
.driver = {
.name = "omap-mcbsp",
.owner = THIS_MODULE,
+ .of_match_table = omap_mcbsp_of_match,
},
.probe = asoc_mcbsp_probe,