From: Mark Brown <[email protected]> This is of very little value in itself but will be useful once the loop iterating over the transfers is also factored out into the core.
Signed-off-by: Mark Brown <[email protected]> --- drivers/spi/spi-s3c64xx.c | 36 ++++++++++++++++++++++++++++-------- 1 file changed, 28 insertions(+), 8 deletions(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 8e732a1..c7b36c0 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -849,16 +849,12 @@ static void s3c64xx_spi_unmap_mssg(struct s3c64xx_spi_driver_data *sdd, } } -static int s3c64xx_spi_transfer_one_message(struct spi_master *master, - struct spi_message *msg) +static int s3c64xx_spi_prepare_message(struct spi_master *master, + struct spi_message *msg) { struct s3c64xx_spi_driver_data *sdd = spi_master_get_devdata(master); struct spi_device *spi = msg->spi; struct s3c64xx_spi_csinfo *cs = spi->controller_data; - struct spi_transfer *xfer; - int status = 0, cs_toggle = 0; - u32 speed; - u8 bpw; /* If Master's(controller) state differs from that needed by Slave */ if (sdd->cur_speed != spi->max_speed_hz @@ -874,13 +870,25 @@ static int s3c64xx_spi_transfer_one_message(struct spi_master *master, if (s3c64xx_spi_map_mssg(sdd, msg)) { dev_err(&spi->dev, "Xfer: Unable to map message buffers!\n"); - status = -ENOMEM; - goto out; + return -ENOMEM; } /* Configure feedback delay */ writel(cs->fb_delay & 0x3, sdd->regs + S3C64XX_SPI_FB_CLK); + return 0; +} + +static int s3c64xx_spi_transfer_one_message(struct spi_master *master, + struct spi_message *msg) +{ + struct s3c64xx_spi_driver_data *sdd = spi_master_get_devdata(master); + struct spi_device *spi = msg->spi; + struct spi_transfer *xfer; + int status = 0, cs_toggle = 0; + u32 speed; + u8 bpw; + list_for_each_entry(xfer, &msg->transfers, transfer_list) { unsigned long flags; @@ -988,6 +996,16 @@ out: return 0; } +static int s3c64xx_spi_unprepare_message(struct spi_master *master, + struct spi_message *msg) +{ + struct s3c64xx_spi_driver_data *sdd = spi_master_get_devdata(master); + + s3c64xx_spi_unmap_mssg(sdd, msg); + + return 0; +} + static struct s3c64xx_spi_csinfo *s3c64xx_get_slave_ctrldata( struct spi_device *spi) { @@ -1360,7 +1378,9 @@ static int s3c64xx_spi_probe(struct platform_device *pdev) master->setup = s3c64xx_spi_setup; master->cleanup = s3c64xx_spi_cleanup; master->prepare_transfer_hardware = s3c64xx_spi_prepare_transfer; + master->prepare_message = s3c64xx_spi_prepare_message; master->transfer_one_message = s3c64xx_spi_transfer_one_message; + master->unprepare_message = s3c64xx_spi_unprepare_message; master->unprepare_transfer_hardware = s3c64xx_spi_unprepare_transfer; master->num_chipselect = sci->num_cs; master->dma_alignment = 8; -- 1.8.4.rc3 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
