From: Brian Niebuhr Date: Thu, 19 Aug 2010 07:14:31 +0000 (+0530) Subject: spi: davinci: setup chip-select timers values only if timer enabled X-Git-Tag: v2.6.38-rc1~454^2~6^2~35 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=fd764463fe28ac53371565f851240e74775fb1aa;p=karo-tx-linux.git spi: davinci: setup chip-select timers values only if timer enabled Setup chip-select timers values only if timer is enabled (timer_disbled in spi configuration is false). As a nice side effect, this patch removes code duplicated in davinci_spi_bufs_pio() and davinci_spi_bufs_dma(). Signed-off-by: Brian Niebuhr Tested-By: Michael Williamson Signed-off-by: Sekhar Nori --- diff --git a/drivers/spi/davinci_spi.c b/drivers/spi/davinci_spi.c index 34b28fe2d327..d09b63cf58bf 100644 --- a/drivers/spi/davinci_spi.c +++ b/drivers/spi/davinci_spi.c @@ -374,6 +374,10 @@ static int davinci_spi_setup_transfer(struct spi_device *spi, if (spicfg->timer_disable) spifmt |= SPIFMT_DISTIMER_MASK; + else + iowrite32((spicfg->c2tdelay << SPI_C2TDELAY_SHIFT) | + (spicfg->t2cdelay << SPI_T2CDELAY_SHIFT), + davinci_spi->base + SPIDELAY); if (spi->mode & SPI_READY) spifmt |= SPIFMT_WAITENA_MASK; @@ -607,13 +611,9 @@ static int davinci_spi_bufs_pio(struct spi_device *spi, struct spi_transfer *t) u32 tx_data, data1_reg_val; u32 buf_val, flg_val; struct davinci_spi_platform_data *pdata; - struct davinci_spi_config *spicfg; davinci_spi = spi_master_get_devdata(spi->master); pdata = davinci_spi->pdata; - spicfg = (struct davinci_spi_config *)spi->controller_data; - if (!spicfg) - spicfg = &davinci_spi_default_cfg; davinci_spi->tx = t->tx_buf; davinci_spi->rx = t->rx_buf; @@ -633,10 +633,6 @@ static int davinci_spi_bufs_pio(struct spi_device *spi, struct spi_transfer *t) /* Enable SPI */ set_io_bits(davinci_spi->base + SPIGCR1, SPIGCR1_SPIENA_MASK); - iowrite32((spicfg->c2tdelay << SPI_C2TDELAY_SHIFT) | - (spicfg->t2cdelay << SPI_T2CDELAY_SHIFT), - davinci_spi->base + SPIDELAY); - count = davinci_spi->count; /* Determine the command to execute READ or WRITE */ @@ -741,14 +737,10 @@ static int davinci_spi_bufs_dma(struct spi_device *spi, struct spi_transfer *t) struct davinci_spi_dma *davinci_spi_dma; int word_len, data_type, ret; unsigned long tx_reg, rx_reg; - struct davinci_spi_config *spicfg; struct device *sdev; davinci_spi = spi_master_get_devdata(spi->master); sdev = davinci_spi->bitbang.master->dev.parent; - spicfg = (struct davinci_spi_config *)spi->controller_data; - if (!spicfg) - spicfg = &davinci_spi_default_cfg; davinci_spi_dma = &davinci_spi->dma_channels[spi->chip_select]; @@ -784,11 +776,6 @@ static int davinci_spi_bufs_dma(struct spi_device *spi, struct spi_transfer *t) if (ret) return ret; - /* Put delay val if required */ - iowrite32((spicfg->c2tdelay << SPI_C2TDELAY_SHIFT) | - (spicfg->t2cdelay << SPI_T2CDELAY_SHIFT), - davinci_spi->base + SPIDELAY); - count = davinci_spi->count; /* the number of elements */ /* disable all interrupts for dma transfers */