spi: octeon: Store system clock freqency in struct octeon_spi
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>
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@ -30,6 +30,7 @@ struct octeon_spi {
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void __iomem *register_base;
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void __iomem *register_base;
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u64 last_cfg;
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u64 last_cfg;
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u64 cs_enax;
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u64 cs_enax;
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int sys_freq;
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};
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};
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static void octeon_spi_wait_ready(struct octeon_spi *p)
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static void octeon_spi_wait_ready(struct octeon_spi *p)
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@ -53,7 +54,6 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
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union cvmx_mpi_cfg mpi_cfg;
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union cvmx_mpi_cfg mpi_cfg;
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union cvmx_mpi_tx mpi_tx;
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union cvmx_mpi_tx mpi_tx;
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unsigned int clkdiv;
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unsigned int clkdiv;
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unsigned int speed_hz;
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int mode;
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int mode;
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bool cpha, cpol;
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bool cpha, cpol;
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const u8 *tx_buf;
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const u8 *tx_buf;
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@ -65,9 +65,7 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
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cpha = mode & SPI_CPHA;
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cpha = mode & SPI_CPHA;
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cpol = mode & SPI_CPOL;
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cpol = mode & SPI_CPOL;
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speed_hz = xfer->speed_hz;
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clkdiv = p->sys_freq / (2 * xfer->speed_hz);
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clkdiv = octeon_get_io_clock_rate() / (2 * speed_hz);
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mpi_cfg.u64 = 0;
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mpi_cfg.u64 = 0;
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@ -194,6 +192,7 @@ static int octeon_spi_probe(struct platform_device *pdev)
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}
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}
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p->register_base = reg_base;
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p->register_base = reg_base;
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p->sys_freq = octeon_get_io_clock_rate();
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master->num_chipselect = 4;
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master->num_chipselect = 4;
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master->mode_bits = SPI_CPHA |
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master->mode_bits = SPI_CPHA |
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