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[ARM] 4752/1: [AT91] RTT, RTC and WDT peripherals on SAM9

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Add platform_device and initialization for the RTT (Real Time Timer)
and WDT (Watchdog) integrated in the Atmel AT91SAM9 processors.

For SAM9263, register both RTT peripherals.
   [From: David Brownell <dbrownell@users.sourceforge.net>]

Provide platform_resources for RTT peripherals
  [From: David Brownell <dbrownell@users.sourceforge.net>]

Add support for RTC peripheral on AT91SAM9RL (same RTC peripherals as
AT91RM9200)
  [From: David Brownell <dbrownell@users.sourceforge.net>]

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
2008-01-23 09:11:13 +01:00
committed by Russell King
parent e292080235
commit 884f5a6a8d
5 changed files with 229 additions and 4 deletions
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47
arch/arm/mach-at91/at91sam9260_devices.c
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@ -538,6 +538,51 @@ void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
#endif
/* --------------------------------------------------------------------
* RTT
* -------------------------------------------------------------------- */
static struct resource rtt_resources[] = {
{
.start = AT91_BASE_SYS + AT91_RTT,
.end = AT91_BASE_SYS + AT91_RTT + SZ_16 - 1,
.flags = IORESOURCE_MEM,
}
};
static struct platform_device at91sam9260_rtt_device = {
.name = "at91_rtt",
.id = -1,
.resource = rtt_resources,
.num_resources = ARRAY_SIZE(rtt_resources),
};
static void __init at91_add_device_rtt(void)
{
platform_device_register(&at91sam9260_rtt_device);
}
/* --------------------------------------------------------------------
* Watchdog
* -------------------------------------------------------------------- */
#if defined(CONFIG_AT91SAM9_WATCHDOG) || defined(CONFIG_AT91SAM9_WATCHDOG_MODULE)
static struct platform_device at91sam9260_wdt_device = {
.name = "at91_wdt",
.id = -1,
.num_resources = 0,
};
static void __init at91_add_device_watchdog(void)
{
platform_device_register(&at91sam9260_wdt_device);
}
#else
static void __init at91_add_device_watchdog(void) {}
#endif
/* --------------------------------------------------------------------
* LEDs
* -------------------------------------------------------------------- */
@ -898,6 +943,8 @@ void __init at91_add_device_serial(void) {}
*/
static int __init at91_add_standard_devices(void)
{
at91_add_device_rtt();
at91_add_device_watchdog();
return 0;
}