spi: 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>
Acked-by: Mark Brown <broonie@linaro.org>
Reviewed-by: Thierry Reding <treding@nvidia.com>

1 files changed, 13 insertions, 5 deletions

diff --git a/drivers/spi/spi-tegra20-slink.c b/drivers/spi/spi-tegra20-slink.c
index e66715ba37ed..1305b8f933ba 100644
--- a/drivers/spi/spi-tegra20-slink.c
+++ b/drivers/spi/spi-tegra20-slink.c
@@ -33,8 +33,8 @@
 #include <linux/pm_runtime.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
+#include <linux/reset.h>
 #include <linux/spi/spi.h>
-#include <linux/clk/tegra.h>
 
 #define SLINK_COMMAND                   0x000
 #define SLINK_BIT_LENGTH(x)             (((x) & 0x1f) << 0)
@@ -167,6 +167,7 @@ struct tegra_slink_data {
         spinlock_t                              lock;
 
         struct clk                              *clk;
+        struct reset_control                    *rst;
         void __iomem                            *base;
         phys_addr_t                             phys;
         unsigned                                irq;
@@ -884,9 +885,9 @@ static irqreturn_t handle_cpu_based_xfer(struct tegra_slink_data *tspi)
                 dev_err(tspi->dev,
                         "CpuXfer 0x%08x:0x%08x:0x%08x\n", tspi->command_reg,
                                 tspi->command2_reg, tspi->dma_control_reg);
-                tegra_periph_reset_assert(tspi->clk);
+                reset_control_assert(tspi->rst);
                 udelay(2);
-                tegra_periph_reset_deassert(tspi->clk);
+                reset_control_deassert(tspi->rst);
                 complete(&tspi->xfer_completion);
                 goto exit;
         }
@@ -957,9 +958,9 @@ static irqreturn_t handle_dma_based_xfer(struct tegra_slink_data *tspi)
                 dev_err(tspi->dev,
                         "DmaXfer 0x%08x:0x%08x:0x%08x\n", tspi->command_reg,
                                 tspi->command2_reg, tspi->dma_control_reg);
-                tegra_periph_reset_assert(tspi->clk);
+                reset_control_assert(tspi->rst);
                 udelay(2);
-                tegra_periph_reset_deassert(tspi->clk);
+                reset_control_assert(tspi->rst);
                 complete(&tspi->xfer_completion);
                 spin_unlock_irqrestore(&tspi->lock, flags);
                 return IRQ_HANDLED;
@@ -1118,6 +1119,13 @@ static int tegra_slink_probe(struct platform_device *pdev)
                 goto exit_free_irq;
         }
 
+        tspi->rst = devm_reset_control_get(&pdev->dev, "spi");
+        if (IS_ERR(tspi->rst)) {
+                dev_err(&pdev->dev, "can not get reset\n");
+                ret = PTR_ERR(tspi->rst);
+                goto exit_free_irq;
+        }
+
         tspi->max_buf_size = SLINK_FIFO_DEPTH << 2;
         tspi->dma_buf_size = DEFAULT_SPI_DMA_BUF_LEN;