diff options
| author | Johan Hovold <jhovold@gmail.com> | 2013-06-12 21:04:53 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-06-12 23:29:45 (GMT) |
| commit | de645475913f677eb024b3d2bd52e264e8106497 (patch) | |
| tree | 616479fb03ec5c28a397192d039d18d97ab199a4 /drivers/rtc | |
| parent | 558c61e5579a81551c0d6c2deaed1da3c7bf714a (diff) | |
| download | linux-de645475913f677eb024b3d2bd52e264e8106497.tar.xz | |
rtc-at91rm9200: add configuration support
Add configuration support which can be used to implement SoC-specific
workarounds for broken hardware.
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>
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-at91rm9200.c | 46 |
1 files changed, 38 insertions, 8 deletions
diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c index eeeb73f..ab2024b 100644 --- a/drivers/rtc/rtc-at91rm9200.c +++ b/drivers/rtc/rtc-at91rm9200.c @@ -42,6 +42,10 @@ #define AT91_RTC_EPOCH 1900UL /* just like arch/arm/common/rtctime.c */ +struct at91_rtc_config { +}; + +static const struct at91_rtc_config *at91_rtc_config; static DECLARE_COMPLETION(at91_rtc_updated); static unsigned int at91_alarm_year = AT91_RTC_EPOCH; static void __iomem *at91_rtc_regs; @@ -250,6 +254,36 @@ static irqreturn_t at91_rtc_interrupt(int irq, void *dev_id) return IRQ_NONE; /* not handled */ } +static const struct at91_rtc_config at91rm9200_config = { +}; + +#ifdef CONFIG_OF +static const struct of_device_id at91_rtc_dt_ids[] = { + { + .compatible = "atmel,at91rm9200-rtc", + .data = &at91rm9200_config, + }, { + /* sentinel */ + } +}; +MODULE_DEVICE_TABLE(of, at91_rtc_dt_ids); +#endif + +static const struct at91_rtc_config * +at91_rtc_get_config(struct platform_device *pdev) +{ + const struct of_device_id *match; + + if (pdev->dev.of_node) { + match = of_match_node(at91_rtc_dt_ids, pdev->dev.of_node); + if (!match) + return NULL; + return (const struct at91_rtc_config *)match->data; + } + + return &at91rm9200_config; +} + static const struct rtc_class_ops at91_rtc_ops = { .read_time = at91_rtc_readtime, .set_time = at91_rtc_settime, @@ -268,6 +302,10 @@ static int __init at91_rtc_probe(struct platform_device *pdev) struct resource *regs; int ret = 0; + at91_rtc_config = at91_rtc_get_config(pdev); + if (!at91_rtc_config) + return -ENODEV; + regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!regs) { dev_err(&pdev->dev, "no mmio resource defined\n"); @@ -383,14 +421,6 @@ static int at91_rtc_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(at91_rtc_pm_ops, at91_rtc_suspend, at91_rtc_resume); -#ifdef CONFIG_OF -static const struct of_device_id at91_rtc_dt_ids[] = { - { .compatible = "atmel,at91rm9200-rtc" }, - { /* sentinel */ } -}; -MODULE_DEVICE_TABLE(of, at91_rtc_dt_ids); -#endif - static struct platform_driver at91_rtc_driver = { .remove = __exit_p(at91_rtc_remove), .driver = { |