diff options
| author | Greg Kroah-Hartman | 2013-08-05 14:04:24 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2013-08-05 14:04:24 +0800 |
| commit | cefe8a32f2a5887246ed250115e34bee6ecc8d61 (patch) | |
| tree | 1e8220456df31a05c6c56889545f2d8360f5a7b9 /include/linux/mfd | |
| parent | 02073798a6b081bf74e6c10d6f7e7a693c067ecd (diff) | |
| parent | b1451e546899bc8f450773b2af02e0cd000cf1fa (diff) | |
Merge tag 'iio-fixes-for-3.11b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
Second round of IIO fixes for the 3.11 cycle.
1) Fix a long term race in the IIO trigger handling.
This only effects cases where a single trigger is in use
by multiple devices.
2) ti_am335x fix an issue with incorrect data due to reading before
the sequencer is finished.
Diffstat (limited to 'include/linux/mfd')
| -rw-r--r-- | include/linux/mfd/ti_am335x_tscadc.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/mfd/ti_am335x_tscadc.h b/include/linux/mfd/ti_am335x_tscadc.h index 8d73fe29796a..db1791bb997a 100644 --- a/include/linux/mfd/ti_am335x_tscadc.h +++ b/include/linux/mfd/ti_am335x_tscadc.h @@ -113,11 +113,27 @@ #define CNTRLREG_8WIRE CNTRLREG_AFE_CTRL(3) #define CNTRLREG_TSCENB BIT(7) +/* FIFO READ Register */ +#define FIFOREAD_DATA_MASK (0xfff << 0) +#define FIFOREAD_CHNLID_MASK (0xf << 16) + +/* Sequencer Status */ +#define SEQ_STATUS BIT(5) + #define ADC_CLK 3000000 #define MAX_CLK_DIV 7 #define TOTAL_STEPS 16 #define TOTAL_CHANNELS 8 +/* +* ADC runs at 3MHz, and it takes +* 15 cycles to latch one data output. +* Hence the idle time for ADC to +* process one sample data would be +* around 5 micro seconds. +*/ +#define IDLE_TIMEOUT 5 /* microsec */ + #define TSCADC_CELLS 2 struct ti_tscadc_dev { |