pwm: Drop changes related to pwm_capture() compared to mainline

The changes compared to mainline don't introduce a single user of pwm capture
support. So drop the changes introduced in commit 2a1b16e ("pwm:
Convert period and duty cycle to u64") and the followup fix 16d0dd9
("pwm: pwm-sti: fix 64bit division on 32bit architectures")

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>

Author: ukleinek

drivers/pwm/pwm-sti.c

@@ -371,10 +371,10 @@ static int sti_pwm_capture(struct pwm_chip *chip, struct pwm_device *pwm,
 		effective_ticks = clk_get_rate(pc->cpt_clk);
 
 		result->period = (high + low) * NSEC_PER_SEC;
-		result->period = div_u64(result->period, effective_ticks);
+		result->period /= effective_ticks;
 
 		result->duty_cycle = high * NSEC_PER_SEC;
-		result->duty_cycle = div_u64(result->duty_cycle, effective_ticks);
+		result->duty_cycle /= effective_ticks;
 
 		break;
 

drivers/pwm/sysfs.c

@@ -247,8 +247,7 @@ static ssize_t capture_show(struct device *child,
 	if (ret)
 		return ret;
 
-	return sysfs_emit(buf, "%llu %llu %llu\n", result.period,
-			  result.duty_cycle, result.phase);
+	return sysfs_emit(buf, "%u %u\n", result.period, result.duty_cycle);
 }
 
 static DEVICE_ATTR_RW(period);

include/linux/pwm.h

@@ -274,9 +274,8 @@ pwm_set_relative_duty_cycle(struct pwm_state *state, unsigned int duty_cycle,
  * @duty_cycle: duty cycle of the PWM signal (in nanoseconds)
  */
 struct pwm_capture {
-	u64 period;
-	u64 duty_cycle;
-	u64 phase;
+	unsigned int period;
+	unsigned int duty_cycle;
 };
 
 /**