From dda9d6a8262cb1fa63eb815dc0de2a984389c71b Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Wed, 6 Nov 2013 16:42:05 -0700 Subject: i2c: 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 Acked-by: Wolfram Sang Reviewed-by: Thierry Reding --- drivers/i2c/busses/i2c-tegra.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) (limited to 'drivers/i2c/busses/i2c-tegra.c') diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index e661edee4d0..9704537aee3 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -27,7 +27,7 @@ #include #include #include -#include +#include #include @@ -160,6 +160,7 @@ struct tegra_i2c_dev { struct i2c_adapter adapter; struct clk *div_clk; struct clk *fast_clk; + struct reset_control *rst; void __iomem *base; int cont_id; int irq; @@ -415,9 +416,9 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev) return err; } - tegra_periph_reset_assert(i2c_dev->div_clk); + reset_control_assert(i2c_dev->rst); udelay(2); - tegra_periph_reset_deassert(i2c_dev->div_clk); + reset_control_deassert(i2c_dev->rst); if (i2c_dev->is_dvc) tegra_dvc_init(i2c_dev); @@ -743,6 +744,12 @@ static int tegra_i2c_probe(struct platform_device *pdev) i2c_dev->cont_id = pdev->id; i2c_dev->dev = &pdev->dev; + i2c_dev->rst = devm_reset_control_get(&pdev->dev, "i2c"); + if (IS_ERR(i2c_dev->rst)) { + dev_err(&pdev->dev, "missing controller reset"); + return PTR_ERR(i2c_dev->rst); + } + ret = of_property_read_u32(i2c_dev->dev->of_node, "clock-frequency", &i2c_dev->bus_clk_rate); if (ret) -- cgit v1.2.3