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| author | Geert Uytterhoeven <geert+renesas@linux-m68k.org> | 2014-01-24 09:43:55 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-01-27 20:02:09 +0000 |
| commit | eb557f75269e82dd26a79be536eca223ddc3eaf7 (patch) | |
| tree | 1e5569eb5e3de693aad437009755a583c91301ff /drivers | |
| parent | 35301c996046243ca6e41d490dea2823f045614c (diff) | |
| download | linux-stable-eb557f75269e82dd26a79be536eca223ddc3eaf7.tar.gz linux-stable-eb557f75269e82dd26a79be536eca223ddc3eaf7.tar.bz2 linux-stable-eb557f75269e82dd26a79be536eca223ddc3eaf7.zip | |
spi: rspi: Abstract transfer_one() for RSPI and QSPI
Split off qspi_transfer_one() (which doesn't support DMA yet) from
rspi_transfer_one().
Replace the abstraction of send_pio()/receive_pio() by the abstracrion of
transfer_one().
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/spi/spi-rspi.c | 36 |
1 files changed, 23 insertions, 13 deletions
diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c index 4b27513e7204..d837c5029308 100644 --- a/drivers/spi/spi-rspi.c +++ b/drivers/spi/spi-rspi.c @@ -239,8 +239,8 @@ static u16 rspi_read_data(const struct rspi_data *rspi) /* optional functions */ struct spi_ops { int (*set_config_register)(struct rspi_data *rspi, int access_size); - int (*send_pio)(struct rspi_data *rspi, struct spi_transfer *t); - int (*receive_pio)(struct rspi_data *rspi, struct spi_transfer *t); + int (*transfer_one)(struct spi_master *master, struct spi_device *spi, + struct spi_transfer *xfer); }; /* @@ -432,8 +432,6 @@ static int qspi_send_pio(struct rspi_data *rspi, struct spi_transfer *t) return 0; } -#define send_pio(spi, t) spi->ops->send_pio(spi, t) - static void rspi_dma_complete(void *arg) { struct rspi_data *rspi = arg; @@ -617,8 +615,6 @@ static int qspi_receive_pio(struct rspi_data *rspi, struct spi_transfer *t) return 0; } -#define receive_pio(spi, t) spi->ops->receive_pio(spi, t) - static int rspi_receive_dma(struct rspi_data *rspi, struct spi_transfer *t) { struct scatterlist sg, sg_dummy; @@ -743,7 +739,7 @@ static int rspi_transfer_one(struct spi_master *master, struct spi_device *spi, if (rspi_is_dma(rspi, xfer)) ret = rspi_send_dma(rspi, xfer); else - ret = send_pio(rspi, xfer); + ret = rspi_send_pio(rspi, xfer); if (ret < 0) return ret; } @@ -751,8 +747,24 @@ static int rspi_transfer_one(struct spi_master *master, struct spi_device *spi, if (rspi_is_dma(rspi, xfer)) ret = rspi_receive_dma(rspi, xfer); else - ret = receive_pio(rspi, xfer); + ret = rspi_receive_pio(rspi, xfer); + } + return ret; +} + +static int qspi_transfer_one(struct spi_master *master, struct spi_device *spi, + struct spi_transfer *xfer) +{ + struct rspi_data *rspi = spi_master_get_devdata(master); + int ret = 0; + + if (xfer->tx_buf) { + ret = qspi_send_pio(rspi, xfer); + if (ret < 0) + return ret; } + if (xfer->rx_buf) + ret = qspi_receive_pio(rspi, xfer); return ret; } @@ -948,7 +960,7 @@ static int rspi_probe(struct platform_device *pdev) master->bus_num = pdev->id; master->setup = rspi_setup; - master->transfer_one = rspi_transfer_one; + master->transfer_one = ops->transfer_one; master->cleanup = rspi_cleanup; master->prepare_message = rspi_prepare_message; master->unprepare_message = rspi_unprepare_message; @@ -990,14 +1002,12 @@ error1: static struct spi_ops rspi_ops = { .set_config_register = rspi_set_config_register, - .send_pio = rspi_send_pio, - .receive_pio = rspi_receive_pio, + .transfer_one = rspi_transfer_one, }; static struct spi_ops qspi_ops = { .set_config_register = qspi_set_config_register, - .send_pio = qspi_send_pio, - .receive_pio = qspi_receive_pio, + .transfer_one = qspi_transfer_one, }; static struct platform_device_id spi_driver_ids[] = { |