Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit affb923d authored by Axel Lin's avatar Axel Lin Committed by Thierry Reding
Browse files

pwm: lpc32xx: Don't change PWM_ENABLE bit in lpc32xx_pwm_config 



lpc32xx_pwm_config() is supposed to set duty_ns and period_ns,
it should not change PWM_ENABLE bit.

Signed-off-by: default avatarAxel Lin <axel.lin@ingics.com>
Tested-by: default avatarRoland Stigge <stigge@antcom.de>
Signed-off-by: default avatarThierry Reding <thierry.reding@avionic-design.de>
parent 08ee77b5

drivers/pwm/pwm-lpc32xx.c

+5 −2
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ static int lpc32xx_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, 
	struct lpc32xx_pwm_chip *lpc32xx = to_lpc32xx_pwm_chip(chip);

	unsigned long long c;

	int period_cycles, duty_cycles;

	u32 val;



	c = clk_get_rate(lpc32xx->clk) / 256;

	c = c * period_ns;
@@ -68,8 +69,10 @@ static int lpc32xx_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, 
		c = 255;

	duty_cycles = 256 - c;



	writel(PWM_ENABLE | PWM_RELOADV(period_cycles) | PWM_DUTY(duty_cycles),

		lpc32xx->base + (pwm->hwpwm << 2));

	val = readl(lpc32xx->base + (pwm->hwpwm << 2));

	val &= ~0xFFFF;

	val |= PWM_RELOADV(period_cycles) | PWM_DUTY(duty_cycles);

	writel(val, lpc32xx->base + (pwm->hwpwm << 2));



	return 0;

}