From eb557f75269e82dd26a79be536eca223ddc3eaf7 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Fri, 24 Jan 2014 09:43:55 +0100 Subject: [PATCH] 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 Signed-off-by: Mark Brown --- drivers/spi/spi-rspi.c | 36 +++++++++++++++++++++++------------- 1 file 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[] = { -- 2.34.1