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| author | Paul Mundt <lethal@linux-sh.org> | 2007-11-26 17:56:31 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2008-01-28 13:18:57 +0900 |
| commit | ff1b7506051014cc38036401b89e426bf3d6a608 (patch) | |
| tree | a6612722484e5ffa621d58edbfb9e817f3f543cb | |
| parent | 1322b9def91ab8e9e673b58a64e13d6effaaa652 (diff) | |
| download | linux-ff1b7506051014cc38036401b89e426bf3d6a608.tar.bz2 | |
rtc: rtc-sh: SH-2A support.
Trivial support for the SH-2A on-chip RTC.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| -rw-r--r-- | drivers/rtc/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/rtc/rtc-sh.c | 20 |
2 files changed, 19 insertions, 3 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 5900c772a1bc..45e4b9648176 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -404,7 +404,7 @@ config RTC_DRV_SA1100 config RTC_DRV_SH tristate "SuperH On-Chip RTC" - depends on RTC_CLASS && (CPU_SH3 || CPU_SH4 || CPU_SH5) + depends on RTC_CLASS && SUPERH help Say Y here to enable support for the on-chip RTC found in most SuperH processors. diff --git a/drivers/rtc/rtc-sh.c b/drivers/rtc/rtc-sh.c index a1d5d55985f6..af9bc57c8920 100644 --- a/drivers/rtc/rtc-sh.c +++ b/drivers/rtc/rtc-sh.c @@ -26,9 +26,13 @@ #include <asm/rtc.h> #define DRV_NAME "sh-rtc" -#define DRV_VERSION "0.1.4" +#define DRV_VERSION "0.1.5" -#ifdef CONFIG_CPU_SH3 +#ifdef CONFIG_CPU_SH2A +#define rtc_reg_size sizeof(u16) +#define RTC_BIT_INVERTED 0 +#define RTC_DEF_CAPABILITIES RTC_CAP_4_DIGIT_YEAR +#elif defined(CONFIG_CPU_SH3) #define rtc_reg_size sizeof(u16) #define RTC_BIT_INVERTED 0 /* No bug on SH7708, SH7709A */ #define RTC_DEF_CAPABILITIES 0UL @@ -62,6 +66,18 @@ #define RCR1 RTC_REG(14) /* Control */ #define RCR2 RTC_REG(15) /* Control */ +/* + * Note on RYRAR and RCR3: Up until this point most of the register + * definitions are consistent across all of the available parts. However, + * the placement of the optional RYRAR and RCR3 (the RYRAR control + * register used to control RYRCNT/RYRAR compare) varies considerably + * across various parts, occasionally being mapped in to a completely + * unrelated address space. For proper RYRAR support a separate resource + * would have to be handed off, but as this is purely optional in + * practice, we simply opt not to support it, thereby keeping the code + * quite a bit more simplified. + */ + /* ALARM Bits - or with BCD encoded value */ #define AR_ENB 0x80 /* Enable for alarm cmp */ |