[ARM] 5258/1: [AT91] PWM controller initialization

Add platform_devices and configuration of the PWM controller found on
Atmel AT91CAP9, SAM9263 and SAM9RL processors.
SAM9263 support by Sedji Gaouaou.

Signed-off-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 53 insertions, 0 deletions

diff --git a/arch/arm/mach-at91/at91sam9263_devices.c b/arch/arm/mach-at91/at91sam9263_devices.c
index c93992f55dc9..8b884083f76d 100644
--- a/arch/arm/mach-at91/at91sam9263_devices.c
+++ b/arch/arm/mach-at91/at91sam9263_devices.c
@@ -886,6 +886,59 @@ static void __init at91_add_device_watchdog(void) {}
 
 
 /* --------------------------------------------------------------------
+ *  PWM
+ * --------------------------------------------------------------------*/
+
+#if defined(CONFIG_ATMEL_PWM)
+static u32 pwm_mask;
+
+static struct resource pwm_resources[] = {
+        [0] = {
+                .start  = AT91SAM9263_BASE_PWMC,
+                .end    = AT91SAM9263_BASE_PWMC + SZ_16K - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = AT91SAM9263_ID_PWMC,
+                .end    = AT91SAM9263_ID_PWMC,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device at91sam9263_pwm0_device = {
+        .name   = "atmel_pwm",
+        .id     = -1,
+        .dev    = {
+                .platform_data          = &pwm_mask,
+        },
+        .resource       = pwm_resources,
+        .num_resources  = ARRAY_SIZE(pwm_resources),
+};
+
+void __init at91_add_device_pwm(u32 mask)
+{
+        if (mask & (1 << AT91_PWM0))
+                at91_set_B_periph(AT91_PIN_PB7, 1);     /* enable PWM0 */
+
+        if (mask & (1 << AT91_PWM1))
+                at91_set_B_periph(AT91_PIN_PB8, 1);     /* enable PWM1 */
+
+        if (mask & (1 << AT91_PWM2))
+                at91_set_B_periph(AT91_PIN_PC29, 1);    /* enable PWM2 */
+
+        if (mask & (1 << AT91_PWM3))
+                at91_set_B_periph(AT91_PIN_PB29, 1);    /* enable PWM3 */
+
+        pwm_mask = mask;
+
+        platform_device_register(&at91sam9263_pwm0_device);
+}
+#else
+void __init at91_add_device_pwm(u32 mask) {}
+#endif
+
+
+/* --------------------------------------------------------------------
  *  SSC -- Synchronous Serial Controller
  * -------------------------------------------------------------------- */