leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

spi: bcm-qspi: Convert to use CS GPIO descriptors

Browse Source 
Set use_gpio_descriptors to true and avoid asserting the native chip
select if the spi core has done it for us.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Link: https://lore.kernel.org/r/20191107044235.4864-2-chris.packham@alliedtelesis.co.nz
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Chris Packham 2019-11-07 17:42:34 +13:00 committed by Mark Brown
parent e9a8ba9769
commit 27fb2313f2
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/spi/spi-bcm-qspi.c
View File

@ -803,7 +803,8 @@ static int bcm_qspi_bspi_exec_mem_op(struct spi_device *spi,
return -EIO; return -EIO;
from = op->addr.val; from = op->addr.val;
bcm_qspi_chip_select(qspi, spi->chip_select); if (!spi->cs_gpiod)
bcm_qspi_chip_select(qspi, spi->chip_select);
bcm_qspi_write(qspi, MSPI, MSPI_WRITE_LOCK, 0); bcm_qspi_write(qspi, MSPI, MSPI_WRITE_LOCK, 0);
/* /*
@ -882,7 +883,8 @@ static int bcm_qspi_transfer_one(struct spi_master *master,
int slots; int slots;
unsigned long timeo = msecs_to_jiffies(100); unsigned long timeo = msecs_to_jiffies(100);
bcm_qspi_chip_select(qspi, spi->chip_select); if (!spi->cs_gpiod)
bcm_qspi_chip_select(qspi, spi->chip_select);
qspi->trans_pos.trans = trans; qspi->trans_pos.trans = trans;
qspi->trans_pos.byte = 0; qspi->trans_pos.byte = 0;
@ -1234,6 +1236,7 @@ int bcm_qspi_probe(struct platform_device *pdev,
master->cleanup = bcm_qspi_cleanup; master->cleanup = bcm_qspi_cleanup;
master->dev.of_node = dev->of_node; master->dev.of_node = dev->of_node;
master->num_chipselect = NUM_CHIPSELECT; master->num_chipselect = NUM_CHIPSELECT;
master->use_gpio_descriptors = true;
qspi->big_endian = of_device_is_big_endian(dev->of_node); qspi->big_endian = of_device_is_big_endian(dev->of_node);