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>

diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c
index 73654e3..afa5844 100644 (file)
--- 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);