From 93fd8fa40fbe80bd825ad7d28b4f2c85c0b751be Mon Sep 17 00:00:00 2001 From: Daisuke Nojiri Date: Tue, 28 Nov 2017 14:11:30 -0800 Subject: chromeec: Add command to override charger limit This patch adds EC_CMD_OVERRIDE_DEDICATED_CHARGER_LIMIT, which overrides the max input current and voltage when a barrel jack adapter supplies power. BUG=b:64442692 BRANCH=none TEST=Boot Fizz. Use chgsup console command to verify the max current and voltage are set as expected. Change-Id: I8c6fc54e519ce13e3db82ee2cecaa96c6eb42d8a Signed-off-by: Daisuke Nojiri Reviewed-on: https://review.coreboot.org/22624 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/ec/google/chromeec/ec.c | 20 ++++++++++++++++++++ src/ec/google/chromeec/ec.h | 10 ++++++++++ src/ec/google/chromeec/ec_commands.h | 10 ++++++++++ 3 files changed, 40 insertions(+) (limited to 'src/ec') diff --git a/src/ec/google/chromeec/ec.c b/src/ec/google/chromeec/ec.c index b44fffe9bc..588d11528b 100644 --- a/src/ec/google/chromeec/ec.c +++ b/src/ec/google/chromeec/ec.c @@ -638,6 +638,26 @@ int google_chromeec_get_usb_pd_power_info(enum usb_chg_type *type, return 0; } +int google_chromeec_override_dedicated_charger_limit(u16 current_lim, + u16 voltage_lim) +{ + struct ec_params_dedicated_charger_limit p = { + .current_lim = current_lim, + .voltage_lim = voltage_lim, + }; + struct chromeec_command cmd = { + .cmd_code = EC_CMD_OVERRIDE_DEDICATED_CHARGER_LIMIT, + .cmd_version = 0, + .cmd_data_in = &p, + .cmd_size_in = sizeof(p), + .cmd_data_out = NULL, + .cmd_size_out = 0, + .cmd_dev_index = 0, + }; + + return google_chromeec_command(&cmd); +} + int google_chromeec_set_usb_pd_role(u8 port, enum usb_pd_control_role role) { struct ec_params_usb_pd_control req = { diff --git a/src/ec/google/chromeec/ec.h b/src/ec/google/chromeec/ec.h index 0b6f880909..e1bf6c8e76 100644 --- a/src/ec/google/chromeec/ec.h +++ b/src/ec/google/chromeec/ec.h @@ -91,6 +91,16 @@ int google_chromeec_set_usb_pd_role(u8 port, enum usb_pd_control_role role); int google_chromeec_get_usb_pd_power_info(enum usb_chg_type *type, u32 *max_watts); +/* + * Set max current and voltage of a dedicated charger. + * + * @param current_lim Max current in mA + * @param voltage_lim Max voltage in mV + * @return non-zero for error, otherwise 0. + */ +int google_chromeec_override_dedicated_charger_limit(u16 current_lim, + u16 voltage_lim); + /* internal structure to send a command to the EC and wait for response. */ struct chromeec_command { uint16_t cmd_code; /* command code in, status out */ diff --git a/src/ec/google/chromeec/ec_commands.h b/src/ec/google/chromeec/ec_commands.h index ee889b727b..0fbb1a6b8c 100644 --- a/src/ec/google/chromeec/ec_commands.h +++ b/src/ec/google/chromeec/ec_commands.h @@ -3533,6 +3533,16 @@ struct __ec_align2 ec_params_external_power_limit_v1 { #define EC_POWER_LIMIT_NONE 0xffff +/* + * Set maximum voltage & current of a dedicated charge port + */ +#define EC_CMD_OVERRIDE_DEDICATED_CHARGER_LIMIT 0x00A3 + +struct __ec_align2 ec_params_dedicated_charger_limit { + uint16_t current_lim; /* in mA */ + uint16_t voltage_lim; /* in mV */ +}; + /*****************************************************************************/ /* Hibernate/Deep Sleep Commands */ -- cgit v1.2.3