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

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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>
This commit is contained in:
Andrew Victor
2008-09-18 19:42:37 +01:00
committed by Russell King
parent e505240b6a
commit bb1ad68b96
7 changed files with 179 additions and 9 deletions
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53
arch/arm/mach-at91/at91sam9rl_devices.c
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@@ -591,6 +591,59 @@ static void __init at91_add_device_watchdog(void) {}
#endif
/* --------------------------------------------------------------------
* PWM
* --------------------------------------------------------------------*/
#if defined(CONFIG_ATMEL_PWM)
static u32 pwm_mask;
static struct resource pwm_resources[] = {
[0] = {
.start = AT91SAM9RL_BASE_PWMC,
.end = AT91SAM9RL_BASE_PWMC + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9RL_ID_PWMC,
.end = AT91SAM9RL_ID_PWMC,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9rl_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_PB8, 1); /* enable PWM0 */
if (mask & (1 << AT91_PWM1))
at91_set_B_periph(AT91_PIN_PB9, 1); /* enable PWM1 */
if (mask & (1 << AT91_PWM2))
at91_set_B_periph(AT91_PIN_PD5, 1); /* enable PWM2 */
if (mask & (1 << AT91_PWM3))
at91_set_B_periph(AT91_PIN_PD8, 1); /* enable PWM3 */
pwm_mask = mask;
platform_device_register(&at91sam9rl_pwm0_device);
}
#else
void __init at91_add_device_pwm(u32 mask) {}
#endif
/* --------------------------------------------------------------------
* SSC -- Synchronous Serial Controller
* -------------------------------------------------------------------- */