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path: root/drivers/pwm/pwm-lpc32xx.c
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Diffstat (limited to 'drivers/pwm/pwm-lpc32xx.c')
-rw-r--r--drivers/pwm/pwm-lpc32xx.c18
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/pwm/pwm-lpc32xx.c b/drivers/pwm/pwm-lpc32xx.c
index b55cc5c1d614..6b6272f61da5 100644
--- a/drivers/pwm/pwm-lpc32xx.c
+++ b/drivers/pwm/pwm-lpc32xx.c
@@ -77,15 +77,29 @@ static int lpc32xx_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
static int lpc32xx_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
{
struct lpc32xx_pwm_chip *lpc32xx = to_lpc32xx_pwm_chip(chip);
+ u32 val;
+ int ret;
+
+ ret = clk_enable(lpc32xx->clk);
+ if (ret)
+ return ret;
- return clk_enable(lpc32xx->clk);
+ val = readl(lpc32xx->base + (pwm->hwpwm << 2));
+ val |= PWM_ENABLE;
+ writel(val, lpc32xx->base + (pwm->hwpwm << 2));
+
+ return 0;
}
static void lpc32xx_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
{
struct lpc32xx_pwm_chip *lpc32xx = to_lpc32xx_pwm_chip(chip);
+ u32 val;
+
+ val = readl(lpc32xx->base + (pwm->hwpwm << 2));
+ val &= ~PWM_ENABLE;
+ writel(val, lpc32xx->base + (pwm->hwpwm << 2));
- writel(0, lpc32xx->base + (pwm->hwpwm << 2));
clk_disable(lpc32xx->clk);
}