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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2015-02-24 13:32:12 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-02-24 23:43:34 +0900 |
| commit | 341c7dc7c074e80d7344e0d75e2b8918ffc982fb (patch) | |
| tree | 0ecbe7107f54a5dd6efcfe6dd93bfb6e9f107d09 /drivers/spi/spi-dw.c | |
| parent | ea11370fffdfedbd0cca0fce17907d2c993246bc (diff) | |
| download | talos-obmc-linux-341c7dc7c074e80d7344e0d75e2b8918ffc982fb.tar.gz talos-obmc-linux-341c7dc7c074e80d7344e0d75e2b8918ffc982fb.zip | |
spi: dw: refactor code that handles clk_div
This patch does the following changes:
a) the calculation of clk_div is simplified to oneliner;
b) chip->clk_div is updated if clk_div is not zero, therefore the condition is
simplified by using chip->clk_div in both cases;
c) while here, the redundant parentheses are removed.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-dw.c')
| -rw-r--r-- | drivers/spi/spi-dw.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index 0febb97ae32f..0e0c48b37b83 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -416,12 +416,11 @@ static void pump_transfers(unsigned long data) if (transfer->speed_hz) { speed = chip->speed_hz; - if ((transfer->speed_hz != speed) || (!chip->clk_div)) { + if ((transfer->speed_hz != speed) || !chip->clk_div) { speed = transfer->speed_hz; /* clk_div doesn't support odd number */ - clk_div = dws->max_freq / speed; - clk_div = (clk_div + 1) & 0xfffe; + clk_div = (dws->max_freq / speed + 1) & 0xfffe; chip->speed_hz = speed; chip->clk_div = clk_div; @@ -480,7 +479,7 @@ static void pump_transfers(unsigned long data) if (dw_readw(dws, DW_SPI_CTRL0) != cr0) dw_writew(dws, DW_SPI_CTRL0, cr0); - spi_set_clk(dws, clk_div ? clk_div : chip->clk_div); + spi_set_clk(dws, chip->clk_div); spi_chip_sel(dws, spi, 1); /* Set the interrupt mask, for poll mode just disable all int */ |
