diff options
| author | Alberto Panizzo <maramaopercheseimorto@gmail.com> | 2010-01-19 12:48:54 +0100 |
|---|---|---|
| committer | Liam Girdwood <lrg@slimlogic.co.uk> | 2010-03-03 14:49:23 +0000 |
| commit | f4b97b36b7c6b2d4455f27d6371869f915cbe8fd (patch) | |
| tree | 460b29d5ed24c2f3d499099d35df2ee7ae01bba4 /include | |
| parent | eda79a3041a2cada0d4ee9491c99c3874b322356 (diff) | |
| download | linux-f4b97b36b7c6b2d4455f27d6371869f915cbe8fd.tar.bz2 | |
regulator: mc13783: consider Power Gates as digital regulators.
GPO regulators are digital outputs that can be enabled or disabled by a
dedicated bit in mc13783 POWERMISC register.
In this family can be count in also Power Gates (PWGT1 and 2): enabled by
a dedicated pin a Power Gate is an hardware driven supply where the output
(PWGTnDRV) follow this law:
Bit PWGTxSPIEN | Pin PWGTxEN | PWGTxDRV | Read Back
0 = default | | | PWGTxSPIEN
---------------+-------------+----------+------------
1 | x | Low | 0
0 | 0 | High | 1
0 | 1 | Low | 0
As read back value of control bit reflects the PWGTxDRV state (not the
control value previously written) and mc13783 POWERMISC register contain
only regulator related bits, a dedicated function to manage these bits is
created here with the aim of tracing the real value of PWGTxSPIEN bits
and reproduce it on next writes.
All POWERMISC users _must_ use the new function to not accidentally
disable Power Gates supplies.
v2 changes:
-Better utilization of abstraction layers.
-Voltage query support. GPO's and PWGTxDRV are fixed voltage regulator
with voltage value of 3.1V and 5.5V respectively.
Signed-off-by: Alberto Panizzo <maramaopercheseimorto@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mfd/mc13783.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mfd/mc13783.h b/include/linux/mfd/mc13783.h index 35680409b8cf..94cb51a64037 100644 --- a/include/linux/mfd/mc13783.h +++ b/include/linux/mfd/mc13783.h @@ -108,6 +108,8 @@ int mc13783_adc_do_conversion(struct mc13783 *mc13783, unsigned int mode, #define MC13783_REGU_V2 28 #define MC13783_REGU_V3 29 #define MC13783_REGU_V4 30 +#define MC13783_REGU_PWGT1SPI 31 +#define MC13783_REGU_PWGT2SPI 32 #define MC13783_IRQ_ADCDONE 0 #define MC13783_IRQ_ADCBISDONE 1 |