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rtc-at91rm9200: use shadow IMR on at91sam9x5

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Add support for the at91sam9x5-family which must use the shadow
interrupt mask due to a hardware issue (causing RTC_IMR to always be
zero).

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Douglas Gilbert <dgilbert@interlog.com>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Ludovic Desroches <ludovic.desroches@atmel.com>
Cc: Robert Nelson <Robert.Nelson@digikey.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Johan Hovold 2013-06-12 14:04:57 -07:00 • committed by Linus Torvalds
parent e9f08bbe3f
commit bba00e5910
2 changed files with 8 additions and 1 deletions
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2
Documentation/devicetree/bindings/rtc/atmel,at91rm9200-rtc.txt
View file

@ -1,7 +1,7 @@
Atmel AT91RM9200 Real Time Clock Atmel AT91RM9200 Real Time Clock
Required properties: Required properties:
- compatible: should be: "atmel,at91rm9200-rtc" - compatible: should be: "atmel,at91rm9200-rtc" or "atmel,at91sam9x5-rtc"
- reg: physical base address of the controller and length of memory mapped - reg: physical base address of the controller and length of memory mapped
region. region.
- interrupts: rtc alarm/event interrupt - interrupts: rtc alarm/event interrupt

7
drivers/rtc/rtc-at91rm9200.c
View file

@ -309,11 +309,18 @@ static irqreturn_t at91_rtc_interrupt(int irq, void *dev_id)
static const struct at91_rtc_config at91rm9200_config = { static const struct at91_rtc_config at91rm9200_config = {
}; };
static const struct at91_rtc_config at91sam9x5_config = {
.use_shadow_imr = true,
};
#ifdef CONFIG_OF #ifdef CONFIG_OF
static const struct of_device_id at91_rtc_dt_ids[] = { static const struct of_device_id at91_rtc_dt_ids[] = {
{ {
.compatible = "atmel,at91rm9200-rtc", .compatible = "atmel,at91rm9200-rtc",
.data = &at91rm9200_config, .data = &at91rm9200_config,
}, {
.compatible = "atmel,at91sam9x5-rtc",
.data = &at91sam9x5_config,
}, { }, {
/* sentinel */ /* sentinel */
} }