[PATCH] mtd/m25p80: add device tree probe support

[Shawn Guo <shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>]

It adds device tree probe support for m25p80 driver.

Signed-off-by: Shawn Guo <shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Cc: Grant Likely <grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>
Cc: Artem Bityutskiy <artem.bityutskiy-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
---
 Documentation/devicetree/bindings/mtd/st-m25p.txt |   14 ++++++++++++++
 drivers/mtd/devices/m25p80.c                      |   12 ++++++++++++
 2 files changed, 26 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/mtd/st-m25p.txt

diff --git a/Documentation/devicetree/bindings/mtd/st-m25p.txt b/Documentation/devicetree/bindings/mtd/st-m25p.txt
new file mode 100644
index 0000000..a8c0485
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/st-m25p.txt
@@ -0,0 +1,14 @@
+* STMicroelectronics SPI Flash
+
+Required properties:
+- compatible : "st,<model>", "st,m25p".
+
+Examples:
+
+flash: m25p32@1 {
+	#address-cells = <1>;
+	#size-cells = <1>;
+	compatible = "st,m25p32", "st,m25p";
+	spi-max-frequency = <20000000>;
+	reg = <1>;
+};
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index e6ba034..d9d4101 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -26,6 +26,7 @@
 #include <linux/slab.h>
 #include <linux/sched.h>
 #include <linux/mod_devicetable.h>
+#include <linux/of_device.h>
 
 #include <linux/mtd/cfi.h>
 #include <linux/mtd/mtd.h>
@@ -767,6 +768,16 @@ static const struct spi_device_id m25p_ids[] = {
 };
 MODULE_DEVICE_TABLE(spi, m25p_ids);
 
+#ifdef CONFIG_OF
+static const struct of_device_id m25p_dt_ids[] = {
+	{ .compatible = "st,m25p", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, m25p_dt_ids);
+#else
+#define m25p_dt_ids NULL
+#endif
+
 static const struct spi_device_id *__devinit jedec_probe(struct spi_device *spi)
 {
 	int			tmp;
@@ -986,6 +997,7 @@ static struct spi_driver m25p80_driver = {
 		.name	= "m25p80",
 		.bus	= &spi_bus_type,
 		.owner	= THIS_MODULE,
+		.of_match_table = m25p_dt_ids,
 	},
 	.id_table	= m25p_ids,
 	.probe	= m25p_probe,
-- 
1.7.4.1