ram_console: use module_init

[pandora-kernel.git] / arch / arm / plat-mxc / pwm.c

diff --git a/arch/arm/plat-mxc/pwm.c b/arch/arm/plat-mxc/pwm.c
index 42d74ea..e032717 100644 (file)
--- a/arch/arm/plat-mxc/pwm.c
+++ b/arch/arm/plat-mxc/pwm.c
@@ -32,6 +32,9 @@
 #define MX3_PWMSAR                0x0C    /* PWM Sample Register */
 #define MX3_PWMPR                 0x10    /* PWM Period Register */
 #define MX3_PWMCR_PRESCALER(x)    (((x - 1) & 0xFFF) << 4)
+#define MX3_PWMCR_DOZEEN                (1 << 24)
+#define MX3_PWMCR_WAITEN                (1 << 23)
+#define MX3_PWMCR_DBGEN                        (1 << 22)
 #define MX3_PWMCR_CLKSRC_IPG_HIGH (2 << 16)
 #define MX3_PWMCR_CLKSRC_IPG      (1 << 16)
 #define MX3_PWMCR_EN              (1 << 0)
@@ -74,10 +77,21 @@ int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns)
                do_div(c, period_ns);
                duty_cycles = c;
 
+               /*
+                * according to imx pwm RM, the real period value should be
+                * PERIOD value in PWMPR plus 2.
+                */
+               if (period_cycles > 2)
+                       period_cycles -= 2;
+               else
+                       period_cycles = 0;
+
                writel(duty_cycles, pwm->mmio_base + MX3_PWMSAR);
                writel(period_cycles, pwm->mmio_base + MX3_PWMPR);
 
-               cr = MX3_PWMCR_PRESCALER(prescale) | MX3_PWMCR_EN;
+               cr = MX3_PWMCR_PRESCALER(prescale) |
+                       MX3_PWMCR_DOZEEN | MX3_PWMCR_WAITEN |
+                       MX3_PWMCR_DBGEN | MX3_PWMCR_EN;
 
                if (cpu_is_mx25())
                        cr |= MX3_PWMCR_CLKSRC_IPG;