diff options
Diffstat (limited to 'drivers/spi/davinci_spi.c')
| -rw-r--r-- | drivers/spi/davinci_spi.c | 67 |
1 files changed, 37 insertions, 30 deletions
diff --git a/drivers/spi/davinci_spi.c b/drivers/spi/davinci_spi.c index 54808577c121..d4320f784070 100644 --- a/drivers/spi/davinci_spi.c +++ b/drivers/spi/davinci_spi.c @@ -156,6 +156,8 @@ struct davinci_spi { struct davinci_spi_slave slave[SPI_MAX_CHIPSELECT]; }; +static struct davinci_spi_config davinci_spi_default_cfg; + static unsigned use_dma; static void davinci_spi_rx_buf_u8(u32 data, struct davinci_spi *davinci_spi) @@ -434,8 +436,12 @@ static int davinci_spi_setup(struct spi_device *spi) int retval; struct davinci_spi *davinci_spi; struct davinci_spi_dma *davinci_spi_dma; + struct davinci_spi_config *spicfg; davinci_spi = spi_master_get_devdata(spi->master); + spicfg = (struct davinci_spi_config *)spi->controller_data; + if (!spicfg) + spicfg = &davinci_spi_default_cfg; /* if bits per word length is zero then set it default 8 */ if (!spi->bits_per_word) @@ -496,31 +502,34 @@ static int davinci_spi_setup(struct spi_device *spi) */ if (davinci_spi->version == SPI_VERSION_2) { + clear_fmt_bits(davinci_spi->base, SPIFMT_WDELAY_MASK, - spi->chip_select); + spi->chip_select); set_fmt_bits(davinci_spi->base, - (davinci_spi->pdata->wdelay - << SPIFMT_WDELAY_SHIFT) - & SPIFMT_WDELAY_MASK, - spi->chip_select); + (spicfg->wdelay << SPIFMT_WDELAY_SHIFT) & + SPIFMT_WDELAY_MASK, spi->chip_select); - if (davinci_spi->pdata->odd_parity) - set_fmt_bits(davinci_spi->base, - SPIFMT_ODD_PARITY_MASK, - spi->chip_select); + if (spicfg->odd_parity) + set_fmt_bits(davinci_spi->base, SPIFMT_ODD_PARITY_MASK, + spi->chip_select); else clear_fmt_bits(davinci_spi->base, SPIFMT_ODD_PARITY_MASK, spi->chip_select); - if (davinci_spi->pdata->parity_enable) - set_fmt_bits(davinci_spi->base, - SPIFMT_PARITYENA_MASK, - spi->chip_select); + if (spicfg->parity_enable) + set_fmt_bits(davinci_spi->base, SPIFMT_PARITYENA_MASK, + spi->chip_select); else - clear_fmt_bits(davinci_spi->base, - SPIFMT_PARITYENA_MASK, - spi->chip_select); + clear_fmt_bits(davinci_spi->base, SPIFMT_PARITYENA_MASK, + spi->chip_select); + + if (spicfg->timer_disable) + set_fmt_bits(davinci_spi->base, SPIFMT_DISTIMER_MASK, + spi->chip_select); + else + clear_fmt_bits(davinci_spi->base, SPIFMT_DISTIMER_MASK, + spi->chip_select); if (spi->mode & SPI_READY) set_fmt_bits(davinci_spi->base, @@ -531,14 +540,6 @@ static int davinci_spi_setup(struct spi_device *spi) SPIFMT_WAITENA_MASK, spi->chip_select); - if (davinci_spi->pdata->timer_disable) - set_fmt_bits(davinci_spi->base, - SPIFMT_DISTIMER_MASK, - spi->chip_select); - else - clear_fmt_bits(davinci_spi->base, - SPIFMT_DISTIMER_MASK, - spi->chip_select); } retval = davinci_spi_setup_transfer(spi, NULL); @@ -662,9 +663,13 @@ 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; @@ -684,8 +689,8 @@ 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(0 | (pdata->c2tdelay << SPI_C2TDELAY_SHIFT) | - (pdata->t2cdelay << SPI_T2CDELAY_SHIFT), + iowrite32((spicfg->c2tdelay << SPI_C2TDELAY_SHIFT) | + (spicfg->t2cdelay << SPI_T2CDELAY_SHIFT), davinci_spi->base + SPIDELAY); count = davinci_spi->count; @@ -792,12 +797,14 @@ 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_platform_data *pdata; + struct davinci_spi_config *spicfg; struct device *sdev; davinci_spi = spi_master_get_devdata(spi->master); - pdata = davinci_spi->pdata; 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]; @@ -834,8 +841,8 @@ static int davinci_spi_bufs_dma(struct spi_device *spi, struct spi_transfer *t) return ret; /* Put delay val if required */ - iowrite32(0 | (pdata->c2tdelay << SPI_C2TDELAY_SHIFT) | - (pdata->t2cdelay << SPI_T2CDELAY_SHIFT), + iowrite32((spicfg->c2tdelay << SPI_C2TDELAY_SHIFT) | + (spicfg->t2cdelay << SPI_T2CDELAY_SHIFT), davinci_spi->base + SPIDELAY); count = davinci_spi->count; /* the number of elements */ |