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Commit 890463f0 authored by Amit Kucheria's avatar Amit Kucheria Committed by Samuel Ortiz
Browse files

mfd: Add comments for the twl4030-power register and bit layout 



Describe how the resource registers are laid out and the various bit-fields in
them.

Signed-off-by: default avatarAmit Kucheria <amit.kucheria@verdurent.com>
Cc: linux-omap@vger.kernel.org
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent e97d1546

drivers/mfd/twl4030-power.c

+10 −2
Original line number Diff line number Diff line
@@ -67,14 +67,22 @@ static u8 twl4030_start_script_address = 0x2b; 
#define R_KEY_1			0xC0

#define R_KEY_2			0x0C



/* resource configuration registers */



/* resource configuration registers

   <RESOURCE>_DEV_GRP   at address 'n+0'

   <RESOURCE>_TYPE      at address 'n+1'

   <RESOURCE>_REMAP     at address 'n+2'

   <RESOURCE>_DEDICATED at address 'n+3'

*/

#define DEV_GRP_OFFSET		0

#define TYPE_OFFSET		1



/* Bit positions in the registers */



/* <RESOURCE>_DEV_GRP */

#define DEV_GRP_SHIFT		5

#define DEV_GRP_MASK		(7 << DEV_GRP_SHIFT)



/* <RESOURCE>_TYPE */

#define TYPE_SHIFT		0

#define TYPE_MASK		(7 << TYPE_SHIFT)

#define TYPE2_SHIFT		3