On Fri, 22 Feb 2013 17:09:18 +0900, Boojin Kim boojin.kim@samsung.com wrote:
This patch adds dma maxburst size initialization. The maxburst should be set by MODE_CFGn.DMA_TYPE, because the pl330 dma driver supports burst mode.
Signed-off-by: Hyeonkook Kim hk619.kim@samsung.com
Acked-by: Grant Likely grant.likely@secretlab.ca
This series probably needs to be merged together through the arm-soc tree.
g.
drivers/spi/spi-s3c64xx.c | 18 ++++++++++++++++++ 1 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index e862ab8..5e6cafe 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -287,10 +287,20 @@ static void prepare_dma(struct s3c64xx_spi_dma_data *dma, struct s3c64xx_spi_driver_data *sdd; struct samsung_dma_prep info; struct samsung_dma_config config;
void __iomem *regs;
unsigned int mode_cfg;
if (dma->direction == DMA_DEV_TO_MEM) { sdd = container_of((void *)dma, struct s3c64xx_spi_driver_data, rx_dma);
regs = sdd->regs;mode_cfg = readl(regs + S3C64XX_SPI_MODE_CFG);if (mode_cfg & S3C64XX_SPI_MODE_4BURST)config.maxburst = 4;elseconfig.maxburst = 1;config.direction = sdd->rx_dma.direction; config.fifo = sdd->sfr_start + S3C64XX_SPI_RX_DATA; config.width = sdd->cur_bpw / 8;
@@ -298,6 +308,14 @@ static void prepare_dma(struct s3c64xx_spi_dma_data *dma, } else { sdd = container_of((void *)dma, struct s3c64xx_spi_driver_data, tx_dma);
regs = sdd->regs;mode_cfg = readl(regs + S3C64XX_SPI_MODE_CFG);if (mode_cfg & S3C64XX_SPI_MODE_4BURST)config.maxburst = 4;elseconfig.maxburst = 1;- config.direction = sdd->tx_dma.direction; config.fifo = sdd->sfr_start + S3C64XX_SPI_TX_DATA; config.width = sdd->cur_bpw / 8;
-- 1.7.5.4
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