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authorAmit Kucheria <amit.kucheria@verdurent.com>2009-10-19 15:10:48 +0300
committerSamuel Ortiz <sameo@linux.intel.com>2009-12-13 19:21:22 +0100
commit890463f0ff2bc5c62470dba181a5362bf7a5b22e (patch)
treef8a1bc1d9fe1aa15f27340e2bf1864b02d7ec6ee /drivers/mfd/twl4030-power.c
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/mfd/twl4030-power.c')
-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;
#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