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Commit 9aa433d2 authored by Stephen Warren's avatar Stephen Warren
Browse files

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: default avatarStephen Warren <swarren@nvidia.com>
Reviewed-by: default avatarThierry Reding <treding@nvidia.com>
Acked-by: default avatarDan Williams <dan.j.williams@intel.com>
Acked-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 80b28791

drivers/dma/tegra20-apb-dma.c

+10 −3
Original line number Diff line number Diff line
@@ -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);