spi_qsd: Add support to get gpios from device tree
Use of/gpio routines to retrieve the gpios specified in
the device tree.
Change-Id: I77d09a36ba2513bbb476d2dd0b768828b22ab436
Signed-off-by: Sathish Ambley <sambley@codeaurora.org>
diff --git a/drivers/spi/spi_qsd.c b/drivers/spi/spi_qsd.c
index cb0e936..2fc95af 100644
--- a/drivers/spi/spi_qsd.c
+++ b/drivers/spi/spi_qsd.c
@@ -39,6 +39,7 @@
#include <linux/remote_spinlock.h>
#include <linux/pm_qos_params.h>
#include <linux/of.h>
+#include <linux/of_gpio.h>
#include "spi_qsd.h"
static inline int msm_spi_configure_gsbi(struct msm_spi *dd,
@@ -1773,6 +1774,7 @@
int clk_enabled = 0;
int pclk_enabled = 0;
struct msm_spi_platform_data *pdata;
+ enum of_gpio_flags flags;
master = spi_alloc_master(&pdev->dev, sizeof(struct msm_spi));
if (!master) {
@@ -1797,9 +1799,35 @@
rc = -ENOMEM;
goto err_probe_exit;
}
+
+ for (i = 0; i < ARRAY_SIZE(spi_rsrcs); ++i) {
+ dd->spi_gpios[i] = of_get_gpio_flags(pdev->dev.of_node,
+ i, &flags);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(spi_cs_rsrcs); ++i) {
+ dd->cs_gpios[i].gpio_num = of_get_named_gpio_flags(
+ pdev->dev.of_node, "cs-gpios",
+ i, &flags);
+ dd->cs_gpios[i].valid = 0;
+ }
} else {
pdata = pdev->dev.platform_data;
dd->qup_ver = SPI_QUP_VERSION_NONE;
+
+ for (i = 0; i < ARRAY_SIZE(spi_rsrcs); ++i) {
+ resource = platform_get_resource(pdev, IORESOURCE_IO,
+ i);
+ dd->spi_gpios[i] = resource ? resource->start : -1;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(spi_cs_rsrcs); ++i) {
+ resource = platform_get_resource(pdev, IORESOURCE_IO,
+ i + ARRAY_SIZE(spi_rsrcs));
+ dd->cs_gpios[i].gpio_num = resource ?
+ resource->start : -1;
+ dd->cs_gpios[i].valid = 0;
+ }
}
dd->pdata = pdata;
@@ -1852,18 +1880,6 @@
}
}
- for (i = 0; i < ARRAY_SIZE(spi_rsrcs); ++i) {
- resource = platform_get_resource(pdev, IORESOURCE_IO, i);
- dd->spi_gpios[i] = resource ? resource->start : -1;
- }
-
- for (i = 0; i < ARRAY_SIZE(spi_cs_rsrcs); ++i) {
- resource = platform_get_resource(pdev, IORESOURCE_IO,
- i + ARRAY_SIZE(spi_rsrcs));
- dd->cs_gpios[i].gpio_num = resource ? resource->start : -1;
- dd->cs_gpios[i].valid = 0;
- }
-
rc = msm_spi_request_gpios(dd);
if (rc)
goto err_probe_gpio;