MXC: pwm driver fixes

- fix off-by-one error in divider calculation
- disable pwm in pwm_disable

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 3 insertions, 1 deletions

diff --git a/arch/arm/plat-mxc/pwm.c b/arch/arm/plat-mxc/pwm.c
index ae34198a79dd..42dd17b89ff3 100644
--- a/arch/arm/plat-mxc/pwm.c
+++ b/arch/arm/plat-mxc/pwm.c
@@ -72,7 +72,7 @@ int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns)
 
                 writel(duty_cycles, pwm->mmio_base + MX3_PWMSAR);
                 writel(period_cycles, pwm->mmio_base + MX3_PWMPR);
-                writel(MX3_PWMCR_PRESCALER(prescale - 1) |
+                writel(MX3_PWMCR_PRESCALER(prescale) |
                         MX3_PWMCR_CLKSRC_IPG_HIGH | MX3_PWMCR_EN,
                         pwm->mmio_base + MX3_PWMCR);
         } else if (cpu_is_mx1() || cpu_is_mx21()) {
@@ -118,6 +118,8 @@ EXPORT_SYMBOL(pwm_enable);
 
 void pwm_disable(struct pwm_device *pwm)
 {
+        writel(0, pwm->mmio_base + MX3_PWMCR);
+
         if (pwm->clk_enabled) {
                 clk_disable(pwm->clk);
                 pwm->clk_enabled = 0;