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| author | Stephen Warren <swarren@nvidia.com> | 2013-11-06 16:31:24 -0700 |
|---|---|---|
| committer | Stephen Warren <swarren@nvidia.com> | 2013-12-11 16:44:17 -0700 |
| commit | ff2251e3de37b002e2e91e4917119f5776e210e3 (patch) | |
| tree | b08a8d09129d099d018c3d1e618f1ffdd689943f /drivers/spi/spi-tegra20-sflash.c | |
| parent | c0df5bf5369ec5d12d781491c95e3207ec5ee2b7 (diff) | |
| download | linux-ff2251e3de37b002e2e91e4917119f5776e210e3.tar.gz linux-ff2251e3de37b002e2e91e4917119f5776e210e3.tar.bz2 linux-ff2251e3de37b002e2e91e4917119f5776e210e3.zip | |
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>
Diffstat (limited to 'drivers/spi/spi-tegra20-sflash.c')
| -rw-r--r-- | drivers/spi/spi-tegra20-sflash.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/spi/spi-tegra20-sflash.c b/drivers/spi/spi-tegra20-sflash.c index 4dc8e8129459..e6f382b33818 100644 --- 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; @@ -389,9 +390,9 @@ 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; } @@ -505,6 +506,13 @@ 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)) { @@ -520,9 +528,9 @@ 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); |