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authorDaniel Mack <zonque@gmail.com>2013-08-12 10:37:18 +0200
committerMark Brown <broonie@linaro.org>2013-08-14 19:54:30 +0100
commit6446221c14ef3bf58754cf1948631128dbe62700 (patch)
tree85b98c217d9528e1a1771f8599875c4814a3b1db /include/linux/pxa2xx_ssp.h
parent1c459de1e645b213a07b9492884a54f5861409f5 (diff)
ARM: pxa: ssp: add pxa_ssp_request_of()
Add a function to lookup ssp devices from device tree. This way, users can reference the ssp devices in order to register to them. Signed-off-by: Daniel Mack <zonque@gmail.com> Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'include/linux/pxa2xx_ssp.h')
-rw-r--r--include/linux/pxa2xx_ssp.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/pxa2xx_ssp.h b/include/linux/pxa2xx_ssp.h
index 467cc6307b62..49444203328a 100644
--- a/include/linux/pxa2xx_ssp.h
+++ b/include/linux/pxa2xx_ssp.h
@@ -21,6 +21,8 @@
#include <linux/list.h>
#include <linux/io.h>
+#include <linux/of.h>
+
/*
* SSP Serial Port Registers
@@ -190,6 +192,8 @@ struct ssp_device {
int irq;
int drcmr_rx;
int drcmr_tx;
+
+ struct device_node *of_node;
};
/**
@@ -218,11 +222,18 @@ static inline u32 pxa_ssp_read_reg(struct ssp_device *dev, u32 reg)
#ifdef CONFIG_ARCH_PXA
struct ssp_device *pxa_ssp_request(int port, const char *label);
void pxa_ssp_free(struct ssp_device *);
+struct ssp_device *pxa_ssp_request_of(const struct device_node *of_node,
+ const char *label);
#else
static inline struct ssp_device *pxa_ssp_request(int port, const char *label)
{
return NULL;
}
+static inline struct ssp_device *pxa_ssp_request_of(const struct device_node *n,
+ const char *name)
+{
+ return NULL;
+}
static inline void pxa_ssp_free(struct ssp_device *ssp) {}
#endif