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Commit 884f5a6a authored by Andrew Victor's avatar Andrew Victor Committed by Russell King
Browse files

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



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: default avatarAndrew Victor <linux@maxim.org.za>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent e2920802

arch/arm/mach-at91/at91sam9260_devices.c

+47 −0
Original line number Diff line number Diff line
@@ -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;

}

arch/arm/mach-at91/at91sam9261_devices.c

+47 −0
Original line number Diff line number Diff line
@@ -550,6 +550,51 @@ void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data) {} 
#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 at91sam9261_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(&at91sam9261_rtt_device);

}





/* --------------------------------------------------------------------

 *  Watchdog

 * -------------------------------------------------------------------- */



#if defined(CONFIG_AT91SAM9_WATCHDOG) || defined(CONFIG_AT91SAM9_WATCHDOG_MODULE)

static struct platform_device at91sam9261_wdt_device = {

	.name		= "at91_wdt",

	.id		= -1,

	.num_resources	= 0,

};



static void __init at91_add_device_watchdog(void)

{

	platform_device_register(&at91sam9261_wdt_device);

}

#else

static void __init at91_add_device_watchdog(void) {}

#endif





/* --------------------------------------------------------------------

 *  LEDs

 * -------------------------------------------------------------------- */
@@ -786,6 +831,8 @@ 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;

}

arch/arm/mach-at91/at91sam9263_devices.c

+63 −0
Original line number Diff line number Diff line
@@ -781,6 +781,67 @@ void __init at91_add_device_isi(void) {} 
#endif





/* --------------------------------------------------------------------

 *  RTT

 * -------------------------------------------------------------------- */



static struct resource rtt0_resources[] = {

	{

		.start	= AT91_BASE_SYS + AT91_RTT0,

		.end	= AT91_BASE_SYS + AT91_RTT0 + SZ_16 - 1,

		.flags	= IORESOURCE_MEM,

	}

};



static struct platform_device at91sam9263_rtt0_device = {

	.name		= "at91_rtt",

	.id		= 0,

	.resource	= rtt0_resources,

	.num_resources	= ARRAY_SIZE(rtt0_resources),

};



static struct resource rtt1_resources[] = {

	{

		.start	= AT91_BASE_SYS + AT91_RTT1,

		.end	= AT91_BASE_SYS + AT91_RTT1 + SZ_16 - 1,

		.flags	= IORESOURCE_MEM,

	}

};



static struct platform_device at91sam9263_rtt1_device = {

	.name		= "at91_rtt",

	.id		= 1,

	.resource	= rtt1_resources,

	.num_resources	= ARRAY_SIZE(rtt1_resources),

};



static void __init at91_add_device_rtt(void)

{

	platform_device_register(&at91sam9263_rtt0_device);

	platform_device_register(&at91sam9263_rtt1_device);

}





/* --------------------------------------------------------------------

 *  Watchdog

 * -------------------------------------------------------------------- */



#if defined(CONFIG_AT91SAM9_WATCHDOG) || defined(CONFIG_AT91SAM9_WATCHDOG_MODULE)

static struct platform_device at91sam9263_wdt_device = {

	.name		= "at91_wdt",

	.id		= -1,

	.num_resources	= 0,

};



static void __init at91_add_device_watchdog(void)

{

	platform_device_register(&at91sam9263_wdt_device);

}

#else

static void __init at91_add_device_watchdog(void) {}

#endif





/* --------------------------------------------------------------------

 *  LEDs

 * -------------------------------------------------------------------- */
@@ -1021,6 +1082,8 @@ 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;

}

arch/arm/mach-at91/at91sam9rl_devices.c

+68 −0
Original line number Diff line number Diff line
@@ -383,6 +383,71 @@ void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data) {} 
#endif





/* --------------------------------------------------------------------

 *  RTC

 * -------------------------------------------------------------------- */



#if defined(CONFIG_RTC_DRV_AT91RM9200) || defined(CONFIG_RTC_DRV_AT91RM9200_MODULE)

static struct platform_device at91sam9rl_rtc_device = {

	.name		= "at91_rtc",

	.id		= -1,

	.num_resources	= 0,

};



static void __init at91_add_device_rtc(void)

{

	platform_device_register(&at91sam9rl_rtc_device);

}

#else

static void __init at91_add_device_rtc(void) {}

#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 at91sam9rl_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(&at91sam9rl_rtt_device);

}





/* --------------------------------------------------------------------

 *  Watchdog

 * -------------------------------------------------------------------- */



#if defined(CONFIG_AT91SAM9_WATCHDOG) || defined(CONFIG_AT91SAM9_WATCHDOG_MODULE)

static struct platform_device at91sam9rl_wdt_device = {

	.name		= "at91_wdt",

	.id		= -1,

	.num_resources	= 0,

};



static void __init at91_add_device_watchdog(void)

{

	platform_device_register(&at91sam9rl_wdt_device);

}

#else

static void __init at91_add_device_watchdog(void) {}

#endif





/* --------------------------------------------------------------------

 *  LEDs

 * -------------------------------------------------------------------- */
@@ -659,6 +724,9 @@ void __init at91_add_device_serial(void) {} 
 */

static int __init at91_add_standard_devices(void)

{

	at91_add_device_rtc();

	at91_add_device_rtt();

	at91_add_device_watchdog();

	return 0;

}

include/asm-arm/arch-at91/at91_rtt.h

+4 −4
Original line number Diff line number Diff line
@@ -13,19 +13,19 @@ 
#ifndef AT91_RTT_H

#define AT91_RTT_H



#define AT91_RTT_MR		(AT91_RTT + 0x00)	/* Real-time Mode Register */

#define AT91_RTT_MR		0x00			/* Real-time Mode Register */

#define		AT91_RTT_RTPRES		(0xffff << 0)		/* Real-time Timer Prescaler Value */

#define		AT91_RTT_ALMIEN		(1 << 16)		/* Alarm Interrupt Enable */

#define		AT91_RTT_RTTINCIEN	(1 << 17)		/* Real Time Timer Increment Interrupt Enable */

#define		AT91_RTT_RTTRST		(1 << 18)		/* Real Time Timer Restart */



#define AT91_RTT_AR		(AT91_RTT + 0x04)	/* Real-time Alarm Register */

#define AT91_RTT_AR		0x04			/* Real-time Alarm Register */

#define		AT91_RTT_ALMV		(0xffffffff)		/* Alarm Value */



#define AT91_RTT_VR		(AT91_RTT + 0x08)	/* Real-time Value Register */

#define AT91_RTT_VR		0x08			/* Real-time Value Register */

#define		AT91_RTT_CRTV		(0xffffffff)		/* Current Real-time Value */



#define AT91_RTT_SR		(AT91_RTT + 0x0c)	/* Real-time Status Register */

#define AT91_RTT_SR		0x0c			/* Real-time Status Register */

#define		AT91_RTT_ALMS		(1 << 0)		/* Real-time Alarm Status */

#define		AT91_RTT_RTTINC		(1 << 1)		/* Real-time Timer Increment */