diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-07-29 00:07:55 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-07-29 00:07:55 +0200 |
commit | cb28a1bbdb4790378e7366d6c9ee1d2340b84f92 (patch) | |
tree | 316436f77dac75335fd2c3ef5f109e71606c50d3 /include/linux/spi/ds1305.h | |
parent | b6d4f7e3ef25beb8c658c97867d98883e69dc544 (diff) | |
parent | f934fb19ef34730263e6afc01e8ec27a8a71470f (diff) |
Merge branch 'linus' into core/generic-dma-coherent
Conflicts:
arch/x86/Kconfig
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/spi/ds1305.h')
-rw-r--r-- | include/linux/spi/ds1305.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/include/linux/spi/ds1305.h b/include/linux/spi/ds1305.h new file mode 100644 index 000000000000..287ec830eab7 --- /dev/null +++ b/include/linux/spi/ds1305.h @@ -0,0 +1,35 @@ +#ifndef __LINUX_SPI_DS1305_H +#define __LINUX_SPI_DS1305_H + +/* + * One-time configuration for ds1305 and ds1306 RTC chips. + * + * Put a pointer to this in spi_board_info.platform_data if you want to + * be sure that Linux (re)initializes this as needed ... after losing + * backup power, and potentially on the first boot. + */ +struct ds1305_platform_data { + + /* Trickle charge configuration: it's OK to leave out the MAGIC + * bitmask; mask in either DS1 or DS2, and then one of 2K/4k/8K. + */ +#define DS1305_TRICKLE_MAGIC 0xa0 +#define DS1305_TRICKLE_DS2 0x08 /* two diodes */ +#define DS1305_TRICKLE_DS1 0x04 /* one diode */ +#define DS1305_TRICKLE_2K 0x01 /* 2 KOhm resistance */ +#define DS1305_TRICKLE_4K 0x02 /* 4 KOhm resistance */ +#define DS1305_TRICKLE_8K 0x03 /* 8 KOhm resistance */ + u8 trickle; + + /* set only on ds1306 parts */ + bool is_ds1306; + + /* ds1306 only: enable 1 Hz output */ + bool en_1hz; + + /* REVISIT: the driver currently expects nINT0 to be wired + * as the alarm IRQ. ALM1 may also need to be set up ... + */ +}; + +#endif /* __LINUX_SPI_DS1305_H */ |