The TCU channels 0 and 1 were previously reserved for system tasks, and
thus unavailable for PWM.
Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
Tested-by: Mathieu Malaterre <malat@xxxxxxxxxx>
Tested-by: Artur Rojek <contact@xxxxxxxxxxxxxx>
---
Notes:
v6: New patch
v7: No change
v8: ingenic_tcu_[request,release]_channel are dropped. We now use
the memory resources provided to the driver to detect whether
or not we are allowed to use the TCU channel.
v9: Drop previous system. Call a API function provided by the
clocksource driver to know if we can use the channel as PWM.
v10: No change
drivers/pwm/pwm-jz4740.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/drivers/pwm/pwm-jz4740.c b/drivers/pwm/pwm-jz4740.c
index f497388fc818..c914589d547b 100644
--- a/drivers/pwm/pwm-jz4740.c
+++ b/drivers/pwm/pwm-jz4740.c
@@ -44,11 +44,7 @@ static int jz4740_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm)
char clk_name[16];
int ret;
- /*
- * Timers 0 and 1 are used for system tasks, so they are unavailable
- * for use as PWMs.
- */
- if (pwm->hwpwm < 2)
+ if (!ingenic_tcu_pwm_can_use_chn(pwm->hwpwm))
return -EBUSY;
snprintf(clk_name, sizeof(clk_name), "timer%u", pwm->hwpwm);
--
2.11.0
