diff options
| author | Aseda Aboagye <aaboagye@google.com> | 2017-11-27 10:19:09 -0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-12-05 18:00:36 -0800 |
| commit | 0a5e908467b5f5169a7197bbe7b327e06432d4cf (patch) | |
| tree | a3927ccf65f15ca6095296a897ed4ebd5c800249 /driver/ppc/sn5s330.h | |
| parent | 864b0b661642836f26e3b7426f701283bc0a069d (diff) | |
| download | chrome-ec-0a5e908467b5f5169a7197bbe7b327e06432d4cf.tar.gz | |
ppc: sn5s330: Add API to determine if FET is on.
It will be useful to determine if a FET is enabled or not. For example,
to determine if we are sourcing power to a downstream device. This
commit simply adds an API to check if a FET is enabled or not.
BUG=None
BRANCH=None
TEST=`make -j buildall`
Change-Id: I1f8198342cf225ce9a10d218607bcfbe6aef618c
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/791498
Commit-Ready: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Edward Hill <ecgh@chromium.org>
Reviewed-by: Shawn N <shawnn@chromium.org>
Diffstat (limited to 'driver/ppc/sn5s330.h')
| -rw-r--r-- | driver/ppc/sn5s330.h | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/driver/ppc/sn5s330.h b/driver/ppc/sn5s330.h index b3d6c45bee..f1bea3da46 100644 --- a/driver/ppc/sn5s330.h +++ b/driver/ppc/sn5s330.h @@ -107,17 +107,25 @@ enum sn5s330_pp_idx { #define SN5S330_VSAFE0V_MASK (1 << 3) /* - * INT_MASK_RISE_EDGE_1 + * INT_MASK_RISE/FALL_EDGE_1 * * The ILIM_PP1 bit indicates an overcurrent condition when sourcing on power * path 1. For rising edge registers, this indicates an overcurrent has * occured; similarly for falling edge, it means the overcurrent condition is no * longer present. */ -#define SN5S330_ILIM_PP1_RISE_MASK (1 << 4) +#define SN5S330_ILIM_PP1_MASK (1 << 4) -/* INT_MASK_FALL_EDGE_1 */ -#define SN5S330_ILIM_PP1_FALL_MASK (1 << 4) +/** + * Determine if a PP FET is enabled or not. + * + * @param chip_idx: The index into the sn5s330_chips[] table. + * @param pp: The power path index (PP1 or PP2). + * @param is_enabled: 1 to turn on the FET, 0 to turn off. + * @return EC_SUCCESS if i2c access worked, otherwise an error. + */ +int sn5s330_is_pp_fet_enabled(uint8_t chip_idx, enum sn5s330_pp_idx pp, + int *is_enabled); /** * Turn on/off the PP1 or PP2 FET. |