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authorPhilipp Zabel <p.zabel@pengutronix.de>2013-03-28 17:35:21 +0100
committerShawn Guo <shawn.guo@linaro.org>2013-04-12 19:28:13 +0800
commit6c64155de972e8c42750340c21e225a2f8b78f26 (patch)
treee1cf842bb4109ffb22d73862f5a3dcc455f5f12c /drivers/staging/imx-drm
parent02985b94638b4de3ef9f2eb2ac5befe5bab12c26 (diff)
downloadlinaro-lsk-6c64155de972e8c42750340c21e225a2f8b78f26.tar.gz
staging: drm/imx: Use SRC to reset IPU
Request the System Reset Controller to reset the IPU if specified via device tree phandle. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Marek Vasut <marex@denx.de> Reviewed-by: Pavel Machek <pavel@ucw.cz> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'drivers/staging/imx-drm')
-rw-r--r--drivers/staging/imx-drm/ipu-v3/ipu-common.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/staging/imx-drm/ipu-v3/ipu-common.c b/drivers/staging/imx-drm/ipu-v3/ipu-common.c
index 366f259e375..04b8320d657 100644
--- a/drivers/staging/imx-drm/ipu-v3/ipu-common.c
+++ b/drivers/staging/imx-drm/ipu-v3/ipu-common.c
@@ -16,6 +16,7 @@
#include <linux/export.h>
#include <linux/types.h>
#include <linux/init.h>
+#include <linux/reset.h>
#include <linux/platform_device.h>
#include <linux/err.h>
#include <linux/spinlock.h>
@@ -660,7 +661,7 @@ int ipu_idmac_disable_channel(struct ipuv3_channel *channel)
}
EXPORT_SYMBOL_GPL(ipu_idmac_disable_channel);
-static int ipu_reset(struct ipu_soc *ipu)
+static int ipu_memory_reset(struct ipu_soc *ipu)
{
unsigned long timeout;
@@ -1104,7 +1105,12 @@ static int ipu_probe(struct platform_device *pdev)
if (ret)
goto out_failed_irq;
- ret = ipu_reset(ipu);
+ ret = device_reset(&pdev->dev);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to reset: %d\n", ret);
+ goto out_failed_reset;
+ }
+ ret = ipu_memory_reset(ipu);
if (ret)
goto out_failed_reset;
@@ -1130,8 +1136,8 @@ static int ipu_probe(struct platform_device *pdev)
failed_add_clients:
ipu_submodules_exit(ipu);
failed_submodules_init:
- ipu_irq_exit(ipu);
out_failed_reset:
+ ipu_irq_exit(ipu);
out_failed_irq:
clk_disable_unprepare(ipu->clk);
failed_clk_get: