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authorAmit Kucheria <amit.kucheria@verdurent.com>2009-10-19 08:10:48 -0400
committerSamuel Ortiz <sameo@linux.intel.com>2009-12-13 13:21:22 -0500
commit890463f0ff2bc5c62470dba181a5362bf7a5b22e (patch)
treef8a1bc1d9fe1aa15f27340e2bf1864b02d7ec6ee /drivers
parente97d15469f2a8b97fd3475dc82f912509bc1a0fd (diff)
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: Amit Kucheria <amit.kucheria@verdurent.com> Cc: linux-omap@vger.kernel.org Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mfd/twl4030-power.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/mfd/twl4030-power.c b/drivers/mfd/twl4030-power.c
index 82e3bcbc0097..2c38ac17ab64 100644
--- a/drivers/mfd/twl4030-power.c
+++ b/drivers/mfd/twl4030-power.c
@@ -67,14 +67,22 @@ static u8 twl4030_start_script_address = 0x2b;
67#define R_KEY_1 0xC0 67#define R_KEY_1 0xC0
68#define R_KEY_2 0x0C 68#define R_KEY_2 0x0C
69 69
70/* resource configuration registers */ 70/* resource configuration registers
71 71 <RESOURCE>_DEV_GRP at address 'n+0'
72 <RESOURCE>_TYPE at address 'n+1'
73 <RESOURCE>_REMAP at address 'n+2'
74 <RESOURCE>_DEDICATED at address 'n+3'
75*/
72#define DEV_GRP_OFFSET 0 76#define DEV_GRP_OFFSET 0
73#define TYPE_OFFSET 1 77#define TYPE_OFFSET 1
74 78
75/* Bit positions in the registers */ 79/* Bit positions in the registers */
80
81/* <RESOURCE>_DEV_GRP */
76#define DEV_GRP_SHIFT 5 82#define DEV_GRP_SHIFT 5
77#define DEV_GRP_MASK (7 << DEV_GRP_SHIFT) 83#define DEV_GRP_MASK (7 << DEV_GRP_SHIFT)
84
85/* <RESOURCE>_TYPE */
78#define TYPE_SHIFT 0 86#define TYPE_SHIFT 0
79#define TYPE_MASK (7 << TYPE_SHIFT) 87#define TYPE_MASK (7 << TYPE_SHIFT)
80#define TYPE2_SHIFT 3 88#define TYPE2_SHIFT 3