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mfd: twl-core: Add API to query the HFCLK rate

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CFG_BOOT register's HFCLK_FREQ field hold information about the used HFCLK
frequency.
Add possibility for users to get the configured rate based on this
register.
This register was configured during boot, without it the chip would not
operate correctly, so we can trust on this information.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Peter Ujfalusi 2012-09-10 13:46:22 +03:00 • committed by Mark Brown
parent b5d5a034de
commit 4cd7a2f1ae
2 changed files with 33 additions and 0 deletions
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1
include/linux/i2c/twl.h
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@ -188,6 +188,7 @@ int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes);
int twl_get_type(void);
int twl_get_version(void);
int twl_get_hfclk_rate(void);
int twl6030_interrupt_unmask(u8 bit_mask, u8 offset);
int twl6030_interrupt_mask(u8 bit_mask, u8 offset);