diff options
| author | Baruch Siach <baruch@tkos.co.il> | 2021-01-20 18:16:28 +0200 |
|---|---|---|
| committer | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2021-02-15 11:43:30 +0100 |
| commit | 0b68d02b6a0dd2c7174a86a882e23d04fc7e7ca8 (patch) | |
| tree | 6a81816cbff192fe9fc244f047d067ca35f81273 /drivers/gpio/gpio-tegra.c | |
| parent | 2bee255a5ecf3213d118f22f6d8f65e4ec9101f2 (diff) | |
gpio: mvebu: improve handling of pwm zero on/off values
Hardware appears to treat zero value as 2^32. Take advantage of this
fact to support on/off values of up to UINT_MAX+1 == 2^32. Adjust both
.apply and .get_state to handle zero as a special case.
Rounded up division result in .get_state can't be zero, since the
dividend is now larger than 0. Remove check for this case.
Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Analyzed-by: Russell King <linux@armlinux.org.uk>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Diffstat (limited to 'drivers/gpio/gpio-tegra.c')
0 files changed, 0 insertions, 0 deletions