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spi: octeon: Store system clock freqency in struct octeon_spi

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Storing the system clock frequency in struct octeon_spi avoids
calling the MIPS specific octeon_get_io_clock_rate() for every transfer.

Signed-off-by: Jan Glauber <jglauber@cavium.com>
Tested-by: Steven J. Hill <steven.hill@cavium.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jan Glauber 2016-07-23 12:42:51 +02:00 committed by Mark Brown
parent 187fc9b374
commit b9e64763b6
1 changed files with 3 additions and 4 deletions
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7
drivers/spi/spi-octeon.c
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@ -30,6 +30,7 @@ struct octeon_spi {
void __iomem *register_base;
u64 last_cfg;
u64 cs_enax;
int sys_freq;
};
static void octeon_spi_wait_ready(struct octeon_spi *p)
@ -53,7 +54,6 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
union cvmx_mpi_cfg mpi_cfg;
union cvmx_mpi_tx mpi_tx;
unsigned int clkdiv;
unsigned int speed_hz;
int mode;
bool cpha, cpol;
const u8 *tx_buf;
@ -65,9 +65,7 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
cpha = mode & SPI_CPHA;
cpol = mode & SPI_CPOL;
speed_hz = xfer->speed_hz;
clkdiv = octeon_get_io_clock_rate() / (2 * speed_hz);
clkdiv = p->sys_freq / (2 * xfer->speed_hz);
mpi_cfg.u64 = 0;
@ -194,6 +192,7 @@ static int octeon_spi_probe(struct platform_device *pdev)
}
p->register_base = reg_base;
p->sys_freq = octeon_get_io_clock_rate();
master->num_chipselect = 4;
master->mode_bits = SPI_CPHA |