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authorStephen Warren <swarren@nvidia.com>2013-11-06 16:35:34 -0700
committerStephen Warren <swarren@nvidia.com>2013-12-11 16:43:20 -0700
commit9aa433d2a77220fc261cb8248bb93bdd8e3944ef (patch)
tree138c34d7fd2198bd1b1932e32ecf440ff483e9f6 /drivers/dma
parent80b28791ff0416a472e5a555a4b6f5f39df2fc24 (diff)
downloadop-kernel-dev-9aa433d2a77220fc261cb8248bb93bdd8e3944ef.zip
op-kernel-dev-9aa433d2a77220fc261cb8248bb93bdd8e3944ef.tar.gz
dma: tegra: use reset framework
Tegra's clock driver now provides an implementation of the common reset API (include/linux/reset.h). Use this instead of the old Tegra- specific API; that will soon be removed. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Thierry Reding <treding@nvidia.com> Acked-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/tegra20-apb-dma.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c
index 73654e3..afa5844 100644
--- a/drivers/dma/tegra20-apb-dma.c
+++ b/drivers/dma/tegra20-apb-dma.c
@@ -32,8 +32,8 @@
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
+#include <linux/reset.h>
#include <linux/slab.h>
-#include <linux/clk/tegra.h>
#include "dmaengine.h"
@@ -208,6 +208,7 @@ struct tegra_dma {
struct dma_device dma_dev;
struct device *dev;
struct clk *dma_clk;
+ struct reset_control *rst;
spinlock_t global_lock;
void __iomem *base_addr;
const struct tegra_dma_chip_data *chip_data;
@@ -1282,6 +1283,12 @@ static int tegra_dma_probe(struct platform_device *pdev)
return PTR_ERR(tdma->dma_clk);
}
+ tdma->rst = devm_reset_control_get(&pdev->dev, "dma");
+ if (IS_ERR(tdma->rst)) {
+ dev_err(&pdev->dev, "Error: Missing reset\n");
+ return PTR_ERR(tdma->rst);
+ }
+
spin_lock_init(&tdma->global_lock);
pm_runtime_enable(&pdev->dev);
@@ -1302,9 +1309,9 @@ static int tegra_dma_probe(struct platform_device *pdev)
}
/* Reset DMA controller */
- tegra_periph_reset_assert(tdma->dma_clk);
+ reset_control_assert(tdma->rst);
udelay(2);
- tegra_periph_reset_deassert(tdma->dma_clk);
+ reset_control_deassert(tdma->rst);
/* Enable global DMA registers */
tdma_write(tdma, TEGRA_APBDMA_GENERAL, TEGRA_APBDMA_GENERAL_ENABLE);
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