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| author |   Steven J. Hill <steven.hill@cavium.com> | 2016-07-23 12:42:50 +0200 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2016-07-24 21:54:29 +0100 |
| commit | 187fc9b37458547e198eaf9af4b33c56999748ad (patch) | |
| tree | c8f8ab00a7093f66047d72bb555f6fbd15e30a88 /drivers/spi | |
| parent | Linux 4.7 (diff) | |
| download | linux-dev-187fc9b37458547e198eaf9af4b33c56999748ad.tar.xz linux-dev-187fc9b37458547e198eaf9af4b33c56999748ad.zip | |
spi: octeon: Convert driver to use readq()/writeq() functions
Remove all calls to cvmx_read_csr()/cvmx_write_csr() and use
the portable readq()/writeq() functions.
Signed-off-by: Steven J. Hill <steven.hill@cavium.com>
Signed-off-by: Jan Glauber <jglauber@cavium.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-octeon.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/drivers/spi/spi-octeon.c b/drivers/spi/spi-octeon.c index 3b170093989f..b53ba530a1c8 100644 --- a/drivers/spi/spi-octeon.c +++ b/drivers/spi/spi-octeon.c @@ -27,7 +27,7 @@ #define OCTEON_SPI_MAX_CLOCK_HZ 16000000 struct octeon_spi { - u64 register_base; + void __iomem *register_base; u64 last_cfg; u64 cs_enax; }; @@ -40,7 +40,7 @@ static void octeon_spi_wait_ready(struct octeon_spi *p) do { if (loops++) __delay(500); - mpi_sts.u64 = cvmx_read_csr(p->register_base + OCTEON_SPI_STS); + mpi_sts.u64 = readq(p->register_base + OCTEON_SPI_STS); } while (mpi_sts.s.busy); } @@ -85,7 +85,7 @@ static int octeon_spi_do_transfer(struct octeon_spi *p, if (mpi_cfg.u64 != p->last_cfg) { p->last_cfg = mpi_cfg.u64; - cvmx_write_csr(p->register_base + OCTEON_SPI_CFG, mpi_cfg.u64); + writeq(mpi_cfg.u64, p->register_base + OCTEON_SPI_CFG); } tx_buf = xfer->tx_buf; rx_buf = xfer->rx_buf; @@ -97,19 +97,19 @@ static int octeon_spi_do_transfer(struct octeon_spi *p, d = *tx_buf++; else d = 0; - cvmx_write_csr(p->register_base + OCTEON_SPI_DAT0 + (8 * i), d); + writeq(d, p->register_base + OCTEON_SPI_DAT0 + (8 * i)); } mpi_tx.u64 = 0; mpi_tx.s.csid = spi->chip_select; mpi_tx.s.leavecs = 1; mpi_tx.s.txnum = tx_buf ? OCTEON_SPI_MAX_BYTES : 0; mpi_tx.s.totnum = OCTEON_SPI_MAX_BYTES; - cvmx_write_csr(p->register_base + OCTEON_SPI_TX, mpi_tx.u64); + writeq(mpi_tx.u64, p->register_base + OCTEON_SPI_TX); octeon_spi_wait_ready(p); if (rx_buf) for (i = 0; i < OCTEON_SPI_MAX_BYTES; i++) { - u64 v = cvmx_read_csr(p->register_base + OCTEON_SPI_DAT0 + (8 * i)); + u64 v = readq(p->register_base + OCTEON_SPI_DAT0 + (8 * i)); *rx_buf++ = (u8)v; } len -= OCTEON_SPI_MAX_BYTES; @@ -121,7 +121,7 @@ static int octeon_spi_do_transfer(struct octeon_spi *p, d = *tx_buf++; else d = 0; - cvmx_write_csr(p->register_base + OCTEON_SPI_DAT0 + (8 * i), d); + writeq(d, p->register_base + OCTEON_SPI_DAT0 + (8 * i)); } mpi_tx.u64 = 0; @@ -132,12 +132,12 @@ static int octeon_spi_do_transfer(struct octeon_spi *p, mpi_tx.s.leavecs = !xfer->cs_change; mpi_tx.s.txnum = tx_buf ? len : 0; mpi_tx.s.totnum = len; - cvmx_write_csr(p->register_base + OCTEON_SPI_TX, mpi_tx.u64); + writeq(mpi_tx.u64, p->register_base + OCTEON_SPI_TX); octeon_spi_wait_ready(p); if (rx_buf) for (i = 0; i < len; i++) { - u64 v = cvmx_read_csr(p->register_base + OCTEON_SPI_DAT0 + (8 * i)); + u64 v = readq(p->register_base + OCTEON_SPI_DAT0 + (8 * i)); *rx_buf++ = (u8)v; } @@ -193,7 +193,7 @@ static int octeon_spi_probe(struct platform_device *pdev) goto fail; } - p->register_base = (u64)reg_base; + p->register_base = reg_base; master->num_chipselect = 4; master->mode_bits = SPI_CPHA | @@ -225,10 +225,9 @@ static int octeon_spi_remove(struct platform_device *pdev) { struct spi_master *master = platform_get_drvdata(pdev); struct octeon_spi *p = spi_master_get_devdata(master); - u64 register_base = p->register_base; /* Clear the CSENA* and put everything in a known state. */ - cvmx_write_csr(register_base + OCTEON_SPI_CFG, 0); + writeq(0, p->register_base + OCTEON_SPI_CFG); return 0; } |