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spi: spi-fsl-dspi: Framesize control for XSPI mode 

Signed-off-by: Esben Haabendal <eha@deif.com>
Acked-by: Martin Hundebøll <martin@geanix.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Esben Haabendal 2018-06-20 09:34:39 +02:00 committed by Mark Brown
parent 58ba07ec79
commit 51d583ae77
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GPG Key ID: 24D68B725D5487D0
1 changed files with 10 additions and 0 deletions
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10
drivers/spi/spi-fsl-dspi.c
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@ -119,6 +119,9 @@
#define SPI_FRAME_BITS_16 SPI_CTAR_FMSZ(0xf)
#define SPI_FRAME_BITS_8 SPI_CTAR_FMSZ(0x7)
#define SPI_FRAME_EBITS(bits) SPI_CTARE_FMSZE(((bits) - 1) >> 4)
#define SPI_FRAME_EBITS_MASK SPI_CTARE_FMSZE(1)
/* Register offsets for regmap_pushr */
#define PUSHR_CMD 0x0
#define PUSHR_TX 0x2
@ -662,6 +665,10 @@ static int dspi_transfer_one_message(struct spi_master *master,
regmap_write(dspi->regmap, SPI_CTAR(0),
dspi->cur_chip->ctar_val |
SPI_FRAME_BITS(transfer->bits_per_word));
if (dspi->devtype_data->xspi_mode)
regmap_write(dspi->regmap, SPI_CTARE(0),
SPI_FRAME_EBITS(transfer->bits_per_word)
| SPI_CTARE_DTCP(1));
trans_mode = dspi->devtype_data->trans_mode;
switch (trans_mode) {
@ -922,6 +929,9 @@ static void dspi_init(struct fsl_dspi *dspi)
{
regmap_write(dspi->regmap, SPI_MCR, SPI_MCR_MASTER | SPI_MCR_PCSIS);
regmap_write(dspi->regmap, SPI_SR, SPI_SR_CLEAR);
if (dspi->devtype_data->xspi_mode)
regmap_write(dspi->regmap, SPI_CTARE(0),
SPI_CTARE_FMSZE(0) | SPI_CTARE_DTCP(1));
}
static int dspi_probe(struct platform_device *pdev)