diff options
| author | Clark Wang <xiaoning.wang@nxp.com> | 2018-11-02 10:56:34 +0800 |
|---|---|---|
| committer | Jason Liu <jason.hui.liu@nxp.com> | 2019-02-12 10:34:54 +0800 |
| commit | bc29ec384ee1c065822f1143a6ddcbf948683f90 (patch) | |
| tree | 2f4d9c3490fca9a0dfcf4ca5c0fb5d85b99e7628 | |
| parent | b4e0c934ad0ad234ad9fad76a0eca9a3d0c17d4b (diff) | |
MLK-20113 spi: ecspi: add pio spi slave mode for imx6ul
Add pio spi slave mode support for imx6ul which is based on the patch
cherry-pick from community(71abd29057cb17b6b9532421821dc443427399ed).
Because the original imx6ul is bound to mx51 in the dts file.
However, in the slave mode, the patch in the community only adds two
functions mx53_ecspi_rx_slave/mx53_ecspi_tx_slave. Therefore, configure
mx51/6ul to use these two functions for data transmission and reception
in slave mode.
Acked-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
| -rw-r--r-- | drivers/spi/spi-imx.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index e932c3494bb9..9c3902555730 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -533,7 +533,7 @@ static int mx51_ecspi_config(struct spi_device *spi) /* set chip select to use */ ctrl |= MX51_ECSPI_CTRL_CS(spi->chip_select); - if (spi_imx->slave_mode && is_imx53_ecspi(spi_imx)) + if (spi_imx->slave_mode) ctrl |= (spi_imx->slave_burst * 8 - 1) << MX51_ECSPI_CTRL_BL_OFFSET; else @@ -987,6 +987,8 @@ static struct spi_imx_devtype_data imx6ul_ecspi_devtype_data = { .fifo_size = 64, .has_dmamode = true, .dynamic_burst = true, + .has_slavemode = true, + .disable = mx51_ecspi_disable, .devtype = IMX6UL_ECSPI, }; @@ -1186,7 +1188,7 @@ static int spi_imx_setupxfer(struct spi_device *spi, else spi_imx->usedma = 0; - if (is_imx53_ecspi(spi_imx) && spi_imx->slave_mode) { + if (spi_imx->slave_mode) { spi_imx->rx = mx53_ecspi_rx_slave; spi_imx->tx = mx53_ecspi_tx_slave; spi_imx->slave_burst = t->len; @@ -1405,7 +1407,7 @@ static int spi_imx_pio_transfer_slave(struct spi_device *spi, struct spi_imx_data *spi_imx = spi_master_get_devdata(spi->master); int ret = transfer->len; - if (is_imx53_ecspi(spi_imx) && + if ((is_imx51_ecspi(spi_imx) || is_imx53_ecspi(spi_imx)) && transfer->len > MX53_MAX_TRANSFER_BYTES) { dev_err(&spi->dev, "Transaction too big, max size is %d bytes\n", MX53_MAX_TRANSFER_BYTES); |