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Subject[PATCH 2/2] ASoC: pxa: add devicetree support
Date
Add the devicetree support, so that the driver can be used in a
devictree platform.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
---
sound/arm/pxa2xx-ac97-lib.c | 11 +++++++++++
sound/soc/pxa/pxa2xx-ac97.c | 10 ++++++++++
2 files changed, 21 insertions(+)

diff --git a/sound/arm/pxa2xx-ac97-lib.c b/sound/arm/pxa2xx-ac97-lib.c
index 5950a9e218d9..17c3f26b92b9 100644
--- a/sound/arm/pxa2xx-ac97-lib.c
+++ b/sound/arm/pxa2xx-ac97-lib.c
@@ -19,6 +19,7 @@
#include <linux/module.h>
#include <linux/io.h>
#include <linux/gpio.h>
+#include <linux/of_gpio.h>

#include <sound/pxa2xx-lib.h>

@@ -337,6 +338,16 @@ int pxa2xx_ac97_hw_probe(struct platform_device *dev)
dev_err(&dev->dev, "Invalid reset GPIO %d\n",
pdata->reset_gpio);
}
+ } else if (!pdata && dev->dev.of_node) {
+ pdata = devm_kzalloc(&dev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
+ pdata->reset_gpio = of_get_named_gpio(dev->dev.of_node,
+ "reset-gpio", 0);
+ if (pdata->reset_gpio == -ENOENT)
+ pdata->reset_gpio = -1;
+ else if (pdata->reset_gpio < 0)
+ return pdata->reset_gpio;
} else {
if (cpu_is_pxa27x())
reset_gpio = 113;
diff --git a/sound/soc/pxa/pxa2xx-ac97.c b/sound/soc/pxa/pxa2xx-ac97.c
index bd36578ceb86..8fda29262ef1 100644
--- a/sound/soc/pxa/pxa2xx-ac97.c
+++ b/sound/soc/pxa/pxa2xx-ac97.c
@@ -231,6 +231,15 @@ static const struct snd_soc_component_driver pxa_ac97_component = {
.name = "pxa-ac97",
};

+#ifdef CONFIG_OF
+static const struct of_device_id pxa2xx_ac97_dt_ids[] = {
+ { .compatible = "marvell,pxa2xx-ac97", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, pxa2xx_ac97_dt_ids);
+
+#endif
+
static int pxa2xx_ac97_dev_probe(struct platform_device *pdev)
{
int ret;
@@ -298,6 +307,7 @@ static struct platform_driver pxa2xx_ac97_driver = {
#ifdef CONFIG_PM_SLEEP
.pm = &pxa2xx_ac97_pm_ops,
#endif
+ .of_match_table = of_match_ptr(pxa2xx_ac97_dt_ids),
},
};

--
2.11.0
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