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i2c: busses: i2c-tegra: Fix bus clock rate

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Change-Id: I186a7b7474c3d2504e2a4d7c1308706bb1b53004
Signed-off-by: Colin Cross <ccross@android.com>
This commit is contained in:
Colin Cross
2010-06-14 15:06:18 -07:00
parent b9f90a825e
commit 91e3654c23
1 changed files with 3 additions and 7 deletions
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10
drivers/i2c/busses/i2c-tegra.c
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@@ -152,13 +152,9 @@ static void tegra_i2c_unmask_irq(struct tegra_i2c_dev *i2c_dev, u32 mask)
static void tegra_i2c_set_clk(struct tegra_i2c_dev *i2c_dev, unsigned int freq)
{
u32 val;
unsigned long input_freq = clk_get_rate(i2c_dev->i2c_clk);
val = input_freq / 12 / freq - 1;
dev_dbg(i2c_dev->dev, "clock %lu to %u: %x\n", input_freq, freq, val);
dev_dbg(i2c_dev->dev, "clock was %x\n", i2c_readl(i2c_dev, I2C_CLK_DIVISOR));
i2c_writel(i2c_dev, val, I2C_CLK_DIVISOR);
dev_dbg(i2c_dev->dev, "clock is %x\n", i2c_readl(i2c_dev, I2C_CLK_DIVISOR));
clk_set_rate(i2c_dev->clk, freq * 8);
dev_dbg(i2c_dev->dev, "%s: requested %u got %lu\n", __func__,
freq, clk_get_rate(i2c_dev->clk)/8);
}
static int tegra_i2c_flush_fifos(struct tegra_i2c_dev *i2c_dev)