Add the devicetree support, so that the driver can be used in a devictree platform.
Signed-off-by: Robert Jarzmik robert.jarzmik@free.fr --- Since v1: changed compatible string to pxa250-ac97, pxa270-ac97... --- sound/arm/pxa2xx-ac97-lib.c | 12 ++++++++++++ sound/soc/pxa/pxa2xx-ac97.c | 12 ++++++++++++ 2 files changed, 24 insertions(+)
diff --git a/sound/arm/pxa2xx-ac97-lib.c b/sound/arm/pxa2xx-ac97-lib.c index 5950a9e218d9..8eafd3d3dff6 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 +338,17 @@ 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-gpios", 0); + if (pdata->reset_gpio == -ENOENT) + pdata->reset_gpio = -1; + else if (pdata->reset_gpio < 0) + return pdata->reset_gpio; + reset_gpio = 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..d6be323a13ec 100644 --- a/sound/soc/pxa/pxa2xx-ac97.c +++ b/sound/soc/pxa/pxa2xx-ac97.c @@ -231,6 +231,17 @@ 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,pxa250-ac97", }, + { .compatible = "marvell,pxa270-ac97", }, + { .compatible = "marvell,pxa300-ac97", }, + { } +}; +MODULE_DEVICE_TABLE(of, pxa2xx_ac97_dt_ids); + +#endif + static int pxa2xx_ac97_dev_probe(struct platform_device *pdev) { int ret; @@ -298,6 +309,7 @@ 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), }, };