clk: pwm: Let .get_duty_cycle() return the real duty cycle

pwm_get_state() returns the last requested pwm_state which might differ
from what the lowlevel PWM driver actually implemented. For the purpose
of .get_duty_cycle() the latter is the more interesting info, so use
that to determine the output parameter.

Signed-off-by: Uwe Kleine-König <[email protected]>
Link: https://lore.kernel.org/r/3db08ded39c09aaa5004b3b8b1238111f199e819.1746006578.git.ukleinek@baylibre.com
Signed-off-by: Stephen Boyd <[email protected]>

Author: ukleinek

drivers/clk/clk-pwm.c

@@ -48,8 +48,11 @@ static int clk_pwm_get_duty_cycle(struct clk_hw *hw, struct clk_duty *duty)
 {
 	struct clk_pwm *clk_pwm = to_clk_pwm(hw);
 	struct pwm_state state;
+	int ret;
 
-	pwm_get_state(clk_pwm->pwm, &state);
+	ret = pwm_get_state_hw(clk_pwm->pwm, &state);
+	if (ret)
+		return ret;
 
 	duty->num = state.duty_cycle;
 	duty->den = state.period;