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spi: support CS timing for HW & SW mode

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this patch supports the controller's HW CS and SW CS via use cs_gpio.

Signed-off-by: leilk.liu <leilk.liu@mediatek.com>
Link: https://lore.kernel.org/r/20210207030953.9297-3-leilk.liu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
leilk.liu 2021-02-07 11:09:52 +08:00 • committed by Mark Brown
parent 4cea6b8cc3
commit 0486d9f91d
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 6 additions and 3 deletions
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9
drivers/spi/spi.c
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@ -810,7 +810,8 @@ static void spi_set_cs(struct spi_device *spi, bool enable)
spi->controller->last_cs_enable = enable;
spi->controller->last_cs_mode_high = spi->mode & SPI_CS_HIGH;
if (!spi->controller->set_cs_timing) {
if (spi->cs_gpiod || gpio_is_valid(spi->cs_gpio) ||
!spi->controller->set_cs_timing) {
if (enable1)
spi_delay_exec(&spi->controller->cs_setup, NULL);
else
@ -841,7 +842,8 @@ static void spi_set_cs(struct spi_device *spi, bool enable)
spi->controller->set_cs(spi, !enable);
}
if (!spi->controller->set_cs_timing) {
if (spi->cs_gpiod || gpio_is_valid(spi->cs_gpio) ||
!spi->controller->set_cs_timing) {
if (!enable1)
spi_delay_exec(&spi->controller->cs_inactive, NULL);
}
@ -3464,7 +3466,8 @@ int spi_set_cs_timing(struct spi_device *spi, struct spi_delay *setup,
size_t len;
int status;
if (spi->controller->set_cs_timing) {
if (spi->controller->set_cs_timing &&
!(spi->cs_gpiod || gpio_is_valid(spi->cs_gpio))) {
if (spi->controller->auto_runtime_pm) {
status = pm_runtime_get_sync(parent);
if (status < 0) {