[PATCH 10/13] uio: uio_pruss: add runtime pm support

Andre Heider
2014-06-29T16:22:08Z

This enables the hwmod's associated clocks and gets the device in a
working state.

Signed-off-by: Andre Heider <a.heider@gmail.com>
---
drivers/uio/uio_pruss.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/drivers/uio/uio_pruss.c b/drivers/uio/uio_pruss.c
index 2df54ab..28a1c1f 100644
--- a/drivers/uio/uio_pruss.c
+++ b/drivers/uio/uio_pruss.c
@@ -27,6 +27,7 @@
#include <linux/slab.h>
#include <linux/genalloc.h>
#include <linux/of_device.h>
+#include <linux/pm_runtime.h>

#define DRV_NAME "pruss_uio"
#define DRV_VERSION "1.0"
@@ -125,6 +126,7 @@ static void pruss_cleanup(struct device *dev, struct uio_pruss_dev *gdev)
gdev->sram_vaddr,
sram_pool_sz);
clk_put(gdev->pruss_clk);
+ pm_runtime_disable(dev);
}

static int pruss_probe(struct platform_device *pdev)
@@ -164,6 +166,13 @@ static int pruss_probe(struct platform_device *pdev)
gdev->pintc_base = pdata->pintc_base;
}

+ pm_runtime_enable(dev);
+ ret = pm_runtime_get_sync(dev);
+ if (IS_ERR_VALUE(ret)) {
+ dev_err(dev, "pm_runtime_get_sync() failed\n");
+ goto out_free;
+ }
+
regs_prussio = platform_get_resource(pdev, IORESOURCE_MEM, 0);
gdev->prussio_vaddr = devm_ioremap_resource(dev, regs_prussio);
if (IS_ERR(gdev->prussio_vaddr)) {
--
2.0.0