A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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Merge branch 'master' into devel

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This commit is contained in:
Russell King 2009-09-12 12:04:37 +01:00 • committed by Russell King
commit 87d721ad7a
908 changed files with 12536 additions and 7059 deletions
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23
drivers/spi/spi_s3c24xx.c
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@ -111,29 +111,32 @@ static int s3c24xx_spi_setupxfer(struct spi_device *spi,
unsigned int bpw;
unsigned int hz;
unsigned int div;
unsigned long clk;
bpw = t ? t->bits_per_word : spi->bits_per_word;
hz = t ? t->speed_hz : spi->max_speed_hz;
if (!bpw)
bpw = 8;
if (!hz)
hz = spi->max_speed_hz;
if (bpw != 8) {
dev_err(&spi->dev, "invalid bits-per-word (%d)\n", bpw);
return -EINVAL;
}
div = clk_get_rate(hw->clk) / hz;
/* is clk = pclk / (2 * (pre+1)), or is it
* clk = (pclk * 2) / ( pre + 1) */
div /= 2;
if (div > 0)
div -= 1;
clk = clk_get_rate(hw->clk);
div = DIV_ROUND_UP(clk, hz * 2) - 1;
if (div > 255)
div = 255;
dev_dbg(&spi->dev, "setting pre-scaler to %d (hz %d)\n", div, hz);
dev_dbg(&spi->dev, "setting pre-scaler to %d (wanted %d, got %ld)\n",
div, hz, clk / (2 * (div + 1)));
writeb(div, hw->regs + S3C2410_SPPRE);
spin_lock(&hw->bitbang.lock);