Messages in this thread | | | From | Grant Likely <> | Subject | Re: [PATCH v2 3/4] spi: s3c64xx: add dma maxburst size initialization | Date | Sat, 02 Mar 2013 22:26:22 +0000 |
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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>
Hello Hyeonkook,
I applied this patch but then discovered that it relys on the previous patches that you've posted. When patched depend on each other like this please post them as a series with [PATCH x/4] in the subject line. 'git send-email' will format this correctly for you.
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; > + else > + config.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; > + else > + config.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 > > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
-- Grant Likely, B.Sc, P.Eng. Secret Lab Technologies, Ltd.
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