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| author | Aseda Aboagye <aaboagye@google.com> | 2018-01-22 17:46:05 +0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-02-01 18:08:36 -0800 |
| commit | e127855f27ace32faa948ee8ab052ccb98e42dd6 (patch) | |
| tree | 45d3fc814a6b41cec5fac0f24230bc672d245143 /driver | |
| parent | 1b87ee65ac8f3cd895da6ef2e219670d2f9779ec (diff) | |
| download | chrome-ec-e127855f27ace32faa948ee8ab052ccb98e42dd6.tar.gz | |
ppc: Add Vconn and CC polarity settings.
BUG=b:72292985
BRANCH=None
TEST=Flash meowth; Verify with twinkie that Vconn is provided for a sink
that requires it.
Change-Id: I8168d2e4c46e04810dcf5c2898b2c337424eefec
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/888224
Commit-Ready: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Edward Hill <ecgh@chromium.org>
Reviewed-by: Jett Rink <jettrink@chromium.org>
Diffstat (limited to 'driver')
| -rw-r--r-- | driver/ppc/sn5s330.c | 36 | ||||
| -rw-r--r-- | driver/ppc/sn5s330.h | 3 |
2 files changed, 39 insertions, 0 deletions
diff --git a/driver/ppc/sn5s330.c b/driver/ppc/sn5s330.c index bdc9d3af7d..90f90528ef 100644 --- a/driver/ppc/sn5s330.c +++ b/driver/ppc/sn5s330.c @@ -455,6 +455,23 @@ static int sn5s330_is_sourcing_vbus(int port) return is_sourcing_vbus; } +static int sn5s330_set_polarity(int port, int polarity) +{ + int regval; + int status; + + status = read_reg(port, SN5S330_FUNC_SET4, ®val); + if (status) + return status; + + if (polarity) + regval |= SN5S330_CC_POLARITY; /* CC2 active. */ + else + regval &= ~SN5S330_CC_POLARITY; /* CC1 active. */ + + return write_reg(port, SN5S330_FUNC_SET4, regval); +} + static int sn5s330_set_vbus_source_current_limit(int port, enum tcpc_rp_value rp) { @@ -515,6 +532,23 @@ static int sn5s330_discharge_vbus(int port, int enable) return EC_SUCCESS; } +static int sn5s330_set_vconn(int port, int enable) +{ + int regval; + int status; + + status = read_reg(port, SN5S330_FUNC_SET4, ®val); + if (status) + return status; + + if (enable) + regval |= SN5S330_VCONN_EN; + else + regval &= ~SN5S330_VCONN_EN; + + return write_reg(port, SN5S330_FUNC_SET4, regval); +} + static int sn5s330_vbus_sink_enable(int port, int enable) { return sn5s330_pp_fet_enable(port, SN5S330_PP2, !!enable); @@ -588,6 +622,8 @@ const struct ppc_drv sn5s330_drv = { #ifdef CONFIG_USB_PD_VBUS_DETECT_PPC .is_vbus_present = &sn5s330_is_vbus_present, #endif /* defined(CONFIG_USB_PD_VBUS_DETECT_PPC) */ + .set_polarity = &sn5s330_set_polarity, .set_vbus_source_current_limit = &sn5s330_set_vbus_source_current_limit, .discharge_vbus = &sn5s330_discharge_vbus, + .set_vconn = &sn5s330_set_vconn, }; diff --git a/driver/ppc/sn5s330.h b/driver/ppc/sn5s330.h index e8850faf57..2e4b36cbca 100644 --- a/driver/ppc/sn5s330.h +++ b/driver/ppc/sn5s330.h @@ -95,6 +95,9 @@ enum sn5s330_pp_idx { #define SN5S330_SET_RCP_MODE_PP1 (1 << 5) #define SN5S330_SET_RCP_MODE_PP2 (1 << 6) +/* FUNC_SET_4 */ +#define SN5S330_VCONN_EN (1 << 0) +#define SN5S330_CC_POLARITY (1 << 1) #define SN5S330_CC_EN (1 << 4) /* FUNC_SET_9 */ |