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author | Sebastian Reichel <sebastian.reichel@collabora.com> | 2018-09-16 13:10:37 +0200 |
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committer | Sebastian Reichel <sebastian.reichel@collabora.com> | 2018-09-16 13:10:37 +0200 |
commit | 782853cf9b1bd349ed726390a6fbe40f745931b7 (patch) | |
tree | 19a0d88136ab6a06e0e85a7f1d1020b0a9726c48 /drivers/power/supply | |
parent | 2e04dd441a2ecc049505b2cbfabc355a48115b59 (diff) | |
parent | 3af15cfacd1eef7f223802d49a88cae23c509183 (diff) | |
download | linux-782853cf9b1bd349ed726390a6fbe40f745931b7.tar.gz linux-782853cf9b1bd349ed726390a6fbe40f745931b7.tar.bz2 linux-782853cf9b1bd349ed726390a6fbe40f745931b7.zip |
Merge tag 'psy-mfd-cros-immutable-for-v4.20-signed' into psy-next
Immutable branch for mfd and power-supply for v4.20
Immutable branch between mfd and power-supply for driver
changes in CROS USBPD charger driver.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'drivers/power/supply')
-rw-r--r-- | drivers/power/supply/cros_usbpd-charger.c | 115 |
1 files changed, 101 insertions, 14 deletions
diff --git a/drivers/power/supply/cros_usbpd-charger.c b/drivers/power/supply/cros_usbpd-charger.c index f2b8de502b82..7e9c3984ef6a 100644 --- a/drivers/power/supply/cros_usbpd-charger.c +++ b/drivers/power/supply/cros_usbpd-charger.c @@ -12,8 +12,12 @@ #include <linux/power_supply.h> #include <linux/slab.h> -#define CHARGER_DIR_NAME "CROS_USBPD_CHARGER%d" -#define CHARGER_DIR_NAME_LENGTH sizeof(CHARGER_DIR_NAME) +#define CHARGER_USBPD_DIR_NAME "CROS_USBPD_CHARGER%d" +#define CHARGER_DEDICATED_DIR_NAME "CROS_DEDICATED_CHARGER" +#define CHARGER_DIR_NAME_LENGTH (sizeof(CHARGER_USBPD_DIR_NAME) >= \ + sizeof(CHARGER_DEDICATED_DIR_NAME) ? \ + sizeof(CHARGER_USBPD_DIR_NAME) : \ + sizeof(CHARGER_DEDICATED_DIR_NAME)) #define CHARGER_CACHE_UPDATE_DELAY msecs_to_jiffies(500) #define CHARGER_MANUFACTURER_MODEL_LENGTH 32 @@ -42,6 +46,7 @@ struct charger_data { struct cros_ec_dev *ec_dev; struct cros_ec_device *ec_device; int num_charger_ports; + int num_usbpd_ports; int num_registered_psy; struct port_data *ports[EC_USB_PD_MAX_PORTS]; struct notifier_block notifier; @@ -58,6 +63,12 @@ static enum power_supply_property cros_usbpd_charger_props[] = { POWER_SUPPLY_PROP_USB_TYPE }; +static enum power_supply_property cros_usbpd_dedicated_charger_props[] = { + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_VOLTAGE_NOW, +}; + static enum power_supply_usb_type cros_usbpd_charger_usb_types[] = { POWER_SUPPLY_USB_TYPE_UNKNOWN, POWER_SUPPLY_USB_TYPE_SDP, @@ -69,6 +80,11 @@ static enum power_supply_usb_type cros_usbpd_charger_usb_types[] = { POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID }; +static bool cros_usbpd_charger_port_is_dedicated(struct port_data *port) +{ + return port->port_number >= port->charger->num_usbpd_ports; +} + static int cros_usbpd_charger_ec_command(struct charger_data *charger, unsigned int version, unsigned int command, @@ -103,6 +119,23 @@ static int cros_usbpd_charger_ec_command(struct charger_data *charger, static int cros_usbpd_charger_get_num_ports(struct charger_data *charger) { + struct ec_response_charge_port_count resp; + int ret; + + ret = cros_usbpd_charger_ec_command(charger, 0, + EC_CMD_CHARGE_PORT_COUNT, + NULL, 0, &resp, sizeof(resp)); + if (ret < 0) { + dev_err(charger->dev, + "Unable to get the number of ports (err:0x%x)\n", ret); + return ret; + } + + return resp.port_count; +} + +static int cros_usbpd_charger_get_usbpd_num_ports(struct charger_data *charger) +{ struct ec_response_usb_pd_ports resp; int ret; @@ -246,7 +279,10 @@ static int cros_usbpd_charger_get_power_info(struct port_data *port) port->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP; } - port->psy_desc.type = POWER_SUPPLY_TYPE_USB; + if (cros_usbpd_charger_port_is_dedicated(port)) + port->psy_desc.type = POWER_SUPPLY_TYPE_MAINS; + else + port->psy_desc.type = POWER_SUPPLY_TYPE_USB; dev_dbg(dev, "Port %d: type=%d vmax=%d vnow=%d cmax=%d clim=%d pmax=%d\n", @@ -281,7 +317,8 @@ static int cros_usbpd_charger_get_port_status(struct port_data *port, if (ret < 0) return ret; - ret = cros_usbpd_charger_get_discovery_info(port); + if (!cros_usbpd_charger_port_is_dedicated(port)) + ret = cros_usbpd_charger_get_discovery_info(port); port->last_update = jiffies; return ret; @@ -424,17 +461,56 @@ static int cros_usbpd_charger_probe(struct platform_device *pd) platform_set_drvdata(pd, charger); + /* + * We need to know the number of USB PD ports in order to know whether + * there is a dedicated port. The dedicated port will always be + * after the USB PD ports, and there should be only one. + */ + charger->num_usbpd_ports = + cros_usbpd_charger_get_usbpd_num_ports(charger); + if (charger->num_usbpd_ports <= 0) { + /* + * This can happen on a system that doesn't support USB PD. + * Log a message, but no need to warn. + */ + dev_info(dev, "No USB PD charging ports found\n"); + } + charger->num_charger_ports = cros_usbpd_charger_get_num_ports(charger); - if (charger->num_charger_ports <= 0) { + if (charger->num_charger_ports < 0) { /* * This can happen on a system that doesn't support USB PD. * Log a message, but no need to warn. + * Older ECs do not support the above command, in that case + * let's set up the number of charger ports equal to the number + * of USB PD ports + */ + dev_info(dev, "Could not get charger port count\n"); + charger->num_charger_ports = charger->num_usbpd_ports; + } + + if (charger->num_charger_ports <= 0) { + /* + * This can happen on a system that doesn't support USB PD and + * doesn't have a dedicated port. + * Log a message, but no need to warn. */ dev_info(dev, "No charging ports found\n"); ret = -ENODEV; goto fail_nowarn; } + /* + * Sanity checks on the number of ports: + * there should be at most 1 dedicated port + */ + if (charger->num_charger_ports < charger->num_usbpd_ports || + charger->num_charger_ports > (charger->num_usbpd_ports + 1)) { + dev_err(dev, "Unexpected number of charge port count\n"); + ret = -EPROTO; + goto fail_nowarn; + } + for (i = 0; i < charger->num_charger_ports; i++) { struct power_supply_config psy_cfg = {}; @@ -446,22 +522,33 @@ static int cros_usbpd_charger_probe(struct platform_device *pd) port->charger = charger; port->port_number = i; - sprintf(port->name, CHARGER_DIR_NAME, i); psy_desc = &port->psy_desc; - psy_desc->name = port->name; - psy_desc->type = POWER_SUPPLY_TYPE_USB; psy_desc->get_property = cros_usbpd_charger_get_prop; psy_desc->external_power_changed = cros_usbpd_charger_power_changed; - psy_desc->properties = cros_usbpd_charger_props; - psy_desc->num_properties = - ARRAY_SIZE(cros_usbpd_charger_props); - psy_desc->usb_types = cros_usbpd_charger_usb_types; - psy_desc->num_usb_types = - ARRAY_SIZE(cros_usbpd_charger_usb_types); psy_cfg.drv_data = port; + if (cros_usbpd_charger_port_is_dedicated(port)) { + sprintf(port->name, CHARGER_DEDICATED_DIR_NAME); + psy_desc->type = POWER_SUPPLY_TYPE_MAINS; + psy_desc->properties = + cros_usbpd_dedicated_charger_props; + psy_desc->num_properties = + ARRAY_SIZE(cros_usbpd_dedicated_charger_props); + } else { + sprintf(port->name, CHARGER_USBPD_DIR_NAME, i); + psy_desc->type = POWER_SUPPLY_TYPE_USB; + psy_desc->properties = cros_usbpd_charger_props; + psy_desc->num_properties = + ARRAY_SIZE(cros_usbpd_charger_props); + psy_desc->usb_types = cros_usbpd_charger_usb_types; + psy_desc->num_usb_types = + ARRAY_SIZE(cros_usbpd_charger_usb_types); + } + + psy_desc->name = port->name; + psy = devm_power_supply_register_no_ws(dev, psy_desc, &psy_cfg); if (IS_ERR(psy)) { |