summaryrefslogtreecommitdiffstats
path: root/drivers/spi/spi-imx.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/spi/spi-imx.c')
-rw-r--r--drivers/spi/spi-imx.c38
1 files changed, 27 insertions, 11 deletions
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index 570f220..47877d6 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -37,6 +37,7 @@
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
+#include <linux/pinctrl/consumer.h>
#include <mach/spi.h>
@@ -85,7 +86,8 @@ struct spi_imx_data {
struct completion xfer_done;
void __iomem *base;
int irq;
- struct clk *clk;
+ struct clk *clk_per;
+ struct clk *clk_ipg;
unsigned long spi_clk;
unsigned int count;
@@ -758,6 +760,7 @@ static int __devinit spi_imx_probe(struct platform_device *pdev)
struct spi_master *master;
struct spi_imx_data *spi_imx;
struct resource *res;
+ struct pinctrl *pinctrl;
int i, ret, num_cs;
if (!np && !mxc_platform_info) {
@@ -845,15 +848,28 @@ static int __devinit spi_imx_probe(struct platform_device *pdev)
goto out_iounmap;
}
- spi_imx->clk = clk_get(&pdev->dev, NULL);
- if (IS_ERR(spi_imx->clk)) {
- dev_err(&pdev->dev, "unable to get clock\n");
- ret = PTR_ERR(spi_imx->clk);
+ pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
+ if (IS_ERR(pinctrl)) {
+ ret = PTR_ERR(pinctrl);
goto out_free_irq;
}
- clk_enable(spi_imx->clk);
- spi_imx->spi_clk = clk_get_rate(spi_imx->clk);
+ spi_imx->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
+ if (IS_ERR(spi_imx->clk_ipg)) {
+ ret = PTR_ERR(spi_imx->clk_ipg);
+ goto out_free_irq;
+ }
+
+ spi_imx->clk_per = devm_clk_get(&pdev->dev, "per");
+ if (IS_ERR(spi_imx->clk_per)) {
+ ret = PTR_ERR(spi_imx->clk_per);
+ goto out_free_irq;
+ }
+
+ clk_prepare_enable(spi_imx->clk_per);
+ clk_prepare_enable(spi_imx->clk_ipg);
+
+ spi_imx->spi_clk = clk_get_rate(spi_imx->clk_per);
spi_imx->devtype_data->reset(spi_imx);
@@ -871,8 +887,8 @@ static int __devinit spi_imx_probe(struct platform_device *pdev)
return ret;
out_clk_put:
- clk_disable(spi_imx->clk);
- clk_put(spi_imx->clk);
+ clk_disable_unprepare(spi_imx->clk_per);
+ clk_disable_unprepare(spi_imx->clk_ipg);
out_free_irq:
free_irq(spi_imx->irq, spi_imx);
out_iounmap:
@@ -900,8 +916,8 @@ static int __devexit spi_imx_remove(struct platform_device *pdev)
spi_bitbang_stop(&spi_imx->bitbang);
writel(0, spi_imx->base + MXC_CSPICTRL);
- clk_disable(spi_imx->clk);
- clk_put(spi_imx->clk);
+ clk_disable_unprepare(spi_imx->clk_per);
+ clk_disable_unprepare(spi_imx->clk_ipg);
free_irq(spi_imx->irq, spi_imx);
iounmap(spi_imx->base);
OpenPOWER on IntegriCloud