From: Stephen Warren <swarren@xxxxxxxxxx>
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.
Cc: treding@xxxxxxxxxx
Cc: pdeschrijver@xxxxxxxxxx
Cc: linux-tegra@xxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Signed-off-by: Stephen Warren <swarren@xxxxxxxxxx>
---
This patch is part of a series with strong internal depdendencies. I'm
looking for an ack so that I can take the entire series through the Tegra
and arm-soc trees. The series will be part of a stable branch that can be
merged into other subsystems if needed to avoid/resolve dependencies.
---
drivers/dma/tegra20-apb-dma.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c
index 73654e33f13b..afa5844c9346 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);
--
1.8.1.5
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