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| author | Jan Dabros <jsd@semihalf.com> | 2021-01-12 09:18:37 +0100 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-01-14 14:40:24 +0000 |
| commit | a0417d4cdac14a5e091aecf095027d136a968939 (patch) | |
| tree | d668a9d741ff250ce0b96100a6ca806f7c389ba3 /driver/gl3590.c | |
| parent | 4f8c2db072fb4a8a99ccdc9fa557f122582f8173 (diff) | |
| download | chrome-ec-a0417d4cdac14a5e091aecf095027d136a968939.tar.gz | |
gl3590: Add API for per-port power management
GL3590 USB3.0 hub has support for enabling/disabling power to its
downstream facing ports via I2C interface. New API allows to enable or
disable bunch of ports at a time in order to limit number of issued I2C
transactions.
BUG=b:177295270
BRANCH=main
TEST=With consecutive patch applied, one may verify new API with usage
of `gl3590` command on servo_v4p1 and enabling/disabling ports.
Signed-off-by: Jan Dabros <jsd@semihalf.com>
Change-Id: I979fb2034e176f1603407be5ba46a528a14ec53c
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2624470
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
Diffstat (limited to 'driver/gl3590.c')
| -rw-r--r-- | driver/gl3590.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/driver/gl3590.c b/driver/gl3590.c index 2faf69178a..40e4df2d05 100644 --- a/driver/gl3590.c +++ b/driver/gl3590.c @@ -193,3 +193,20 @@ enum ec_error_list gl3590_ufp_pwr(int hub, struct pwr_con_t *pwr) return EC_ERROR_UNKNOWN; } } + +int gl3590_enable_ports(int hub, uint8_t port_mask, bool enable) +{ + uint8_t buf[4] = {0}; + uint8_t en_mask = 0; + int rv; + + if (!enable) + en_mask = port_mask; + + buf[0] = en_mask; + buf[2] = port_mask; + + rv = gl3590_write(hub, GL3590_PORT_DISABLED_REG, buf, sizeof(buf)); + + return rv; +} |