diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-08-05 11:49:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-08-05 11:49:02 -0700 |
| commit | 0eb0ce0a78e1f57082bca6cbdea6fd04feedb876 (patch) | |
| tree | e6fc28ae69b280df466015b9ea7210efa8292607 /drivers/spi/spi-gpio.c | |
| parent | df9edcba0b1146da5e4a2d1921bbc10c1a2fb55d (diff) | |
| parent | a4127952859a869cf3fc5a49547dbe2ffa2eac89 (diff) | |
Merge tag 'spi-fix-v5.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A bunch of small, device specific things here plus a DT bindings fix
for the new validatable YAML binding format.
The most notable thing is the fix for GPIO chip selects which fixes a
corner case in updates of that code to modern APIs, unfortunately due
to a historical mess the code around GPIO support is obscure, fragile
and an ABI which makes and attempt to improve the situation painful"
* tag 'spi-fix-v5.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: pxa2xx: Add support for Intel Tiger Lake
spi: bcm2835: Fix 3-wire mode if DMA is enabled
spi: pxa2xx: Balance runtime PM enable/disable on error
spi: gpio: Add SPI_MASTER_GPIO_SS flag
spi: spi-fsl-qspi: change i.MX7D RX FIFO size
spi: dt-bindings: spi-controller: remove unnecessary 'maxItems: 1' from reg
Diffstat (limited to 'drivers/spi/spi-gpio.c')
| -rw-r--r-- | drivers/spi/spi-gpio.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/spi/spi-gpio.c b/drivers/spi/spi-gpio.c index eca9d52ecf65..9eb82150666e 100644 --- a/drivers/spi/spi-gpio.c +++ b/drivers/spi/spi-gpio.c @@ -410,6 +410,12 @@ static int spi_gpio_probe(struct platform_device *pdev) bb = &spi_gpio->bitbang; bb->master = master; + /* + * There is some additional business, apart from driving the CS GPIO + * line, that we need to do on selection. This makes the local + * callback for chipselect always get called. + */ + master->flags |= SPI_MASTER_GPIO_SS; bb->chipselect = spi_gpio_chipselect; bb->set_line_direction = spi_gpio_set_direction; |