mfd: Add comments for the twl4030-power register and bit layout (890463f0) · Commits · 戴 / test

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

Amit Kucheria <amit.kucheria@verdurent.com> Cc: linux-omap@vger.kernel.org Signed-off-by:

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