diff options
author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-09 10:19:18 +0300 |
---|---|---|
committer | Mark Brown <broonie@kernel.org> | 2021-06-09 13:55:46 +0300 |
commit | 4ccf359849ce709f4bf0214b4b5b8b6891d38770 (patch) | |
tree | 22aa30b2eeac77ce906a216195da7b18c6ce2131 /drivers/spi/spi.c | |
parent | 2b2142f247ebeef74aaadc1a646261c19627fd7e (diff) | |
download | linux-4ccf359849ce709f4bf0214b4b5b8b6891d38770.tar.xz |
spi: remove spi_set_cs_timing()
No one seems to be using this global and exported function, so remove it
as it is no longer needed.
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20210609071918.2852069-1-gregkh@linuxfoundation.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi.c')
-rw-r--r-- | drivers/spi/spi.c | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index ac892cc83171..a0a232669dc1 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -3472,79 +3472,6 @@ int spi_setup(struct spi_device *spi) } EXPORT_SYMBOL_GPL(spi_setup); -/** - * spi_set_cs_timing - configure CS setup, hold, and inactive delays - * @spi: the device that requires specific CS timing configuration - * @setup: CS setup time specified via @spi_delay - * @hold: CS hold time specified via @spi_delay - * @inactive: CS inactive delay between transfers specified via @spi_delay - * - * Return: zero on success, else a negative error code. - */ -int spi_set_cs_timing(struct spi_device *spi, struct spi_delay *setup, - struct spi_delay *hold, struct spi_delay *inactive) -{ - struct device *parent = spi->controller->dev.parent; - size_t len; - int status; - - if (spi->controller->set_cs_timing && - !(spi->cs_gpiod || gpio_is_valid(spi->cs_gpio))) { - mutex_lock(&spi->controller->io_mutex); - - if (spi->controller->auto_runtime_pm) { - status = pm_runtime_get_sync(parent); - if (status < 0) { - mutex_unlock(&spi->controller->io_mutex); - pm_runtime_put_noidle(parent); - dev_err(&spi->controller->dev, "Failed to power device: %d\n", - status); - return status; - } - - status = spi->controller->set_cs_timing(spi, setup, - hold, inactive); - pm_runtime_mark_last_busy(parent); - pm_runtime_put_autosuspend(parent); - } else { - status = spi->controller->set_cs_timing(spi, setup, hold, - inactive); - } - - mutex_unlock(&spi->controller->io_mutex); - return status; - } - - if ((setup && setup->unit == SPI_DELAY_UNIT_SCK) || - (hold && hold->unit == SPI_DELAY_UNIT_SCK) || - (inactive && inactive->unit == SPI_DELAY_UNIT_SCK)) { - dev_err(&spi->dev, - "Clock-cycle delays for CS not supported in SW mode\n"); - return -ENOTSUPP; - } - - len = sizeof(struct spi_delay); - - /* copy delays to controller */ - if (setup) - memcpy(&spi->controller->cs_setup, setup, len); - else - memset(&spi->controller->cs_setup, 0, len); - - if (hold) - memcpy(&spi->controller->cs_hold, hold, len); - else - memset(&spi->controller->cs_hold, 0, len); - - if (inactive) - memcpy(&spi->controller->cs_inactive, inactive, len); - else - memset(&spi->controller->cs_inactive, 0, len); - - return 0; -} -EXPORT_SYMBOL_GPL(spi_set_cs_timing); - static int _spi_xfer_word_delay_update(struct spi_transfer *xfer, struct spi_device *spi) { |