Merge tag 'spi-v3.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

[linux-drm-fsl-dcu.git] / drivers / spi / spi-tegra20-sflash.c

diff --git a/drivers/spi/spi-tegra20-sflash.c b/drivers/spi/spi-tegra20-sflash.c
index af78c17388d24097bd23d8b5b99a45868d41b12a..08794977f21ae38e35186e5347d40d8bb7bdcb7d 100644 (file)
--- a/drivers/spi/spi-tegra20-sflash.c
+++ b/drivers/spi/spi-tegra20-sflash.c
@@ -32,8 +32,8 @@
 #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 SPI_COMMAND                            0x000
 #define SPI_GO                                 BIT(30)
@@ -118,6 +118,7 @@ struct tegra_sflash_data {
        spinlock_t                              lock;
 
        struct clk                              *clk;
+       struct reset_control                    *rst;
        void __iomem                            *base;
        unsigned                                irq;
        u32                                     spi_max_frequency;
@@ -387,9 +388,9 @@ static irqreturn_t handle_cpu_based_xfer(struct tegra_sflash_data *tsd)
                dev_err(tsd->dev,
                        "CpuXfer 0x%08x:0x%08x\n", tsd->command_reg,
                                tsd->dma_control_reg);
-               tegra_periph_reset_assert(tsd->clk);
+               reset_control_assert(tsd->rst);
                udelay(2);
-               tegra_periph_reset_deassert(tsd->clk);
+               reset_control_deassert(tsd->rst);
                complete(&tsd->xfer_completion);
                goto exit;
        }
@@ -503,6 +504,13 @@ static int tegra_sflash_probe(struct platform_device *pdev)
                goto exit_free_irq;
        }
 
+       tsd->rst = devm_reset_control_get(&pdev->dev, "spi");
+       if (IS_ERR(tsd->rst)) {
+               dev_err(&pdev->dev, "can not get reset\n");
+               ret = PTR_ERR(tsd->rst);
+               goto exit_free_irq;
+       }
+
        init_completion(&tsd->xfer_completion);
        pm_runtime_enable(&pdev->dev);
        if (!pm_runtime_enabled(&pdev->dev)) {
@@ -518,9 +526,9 @@ static int tegra_sflash_probe(struct platform_device *pdev)
        }
 
        /* Reset controller */
-       tegra_periph_reset_assert(tsd->clk);
+       reset_control_assert(tsd->rst);
        udelay(2);
-       tegra_periph_reset_deassert(tsd->clk);
+       reset_control_deassert(tsd->rst);
 
        tsd->def_command_reg  = SPI_M_S | SPI_CS_SW;
        tegra_sflash_writel(tsd, tsd->def_command_reg, SPI_COMMAND);