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

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
...@@ -37,6 +37,7 @@ static int lpc32xx_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, ...@@ -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); struct lpc32xx_pwm_chip *lpc32xx = to_lpc32xx_pwm_chip(chip);
unsigned long long c; unsigned long long c;
int period_cycles, duty_cycles; int period_cycles, duty_cycles;
u32 val;
c = clk_get_rate(lpc32xx->clk) / 256; c = clk_get_rate(lpc32xx->clk) / 256;
c = c * period_ns; c = c * period_ns;
...@@ -68,8 +69,10 @@ static int lpc32xx_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, ...@@ -68,8 +69,10 @@ static int lpc32xx_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
c = 255; c = 255;
duty_cycles = 256 - c; duty_cycles = 256 - c;
writel(PWM_ENABLE | PWM_RELOADV(period_cycles) | PWM_DUTY(duty_cycles), val = readl(lpc32xx->base + (pwm->hwpwm << 2));
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; return 0;
} }
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment