diff options
Diffstat (limited to 'drivers/usb/typec')
-rw-r--r-- | drivers/usb/typec/Kconfig | 6 | ||||
-rw-r--r-- | drivers/usb/typec/class.c | 298 | ||||
-rw-r--r-- | drivers/usb/typec/mux/intel_pmc_mux.c | 17 | ||||
-rw-r--r-- | drivers/usb/typec/stusb160x.c | 2 | ||||
-rw-r--r-- | drivers/usb/typec/tcpm/fusb302.c | 16 | ||||
-rw-r--r-- | drivers/usb/typec/tcpm/tcpci.c | 123 | ||||
-rw-r--r-- | drivers/usb/typec/tcpm/tcpci.h | 25 | ||||
-rw-r--r-- | drivers/usb/typec/tcpm/tcpci_maxim.c | 51 | ||||
-rw-r--r-- | drivers/usb/typec/tcpm/tcpm.c | 227 | ||||
-rw-r--r-- | drivers/usb/typec/tcpm/wcove.c | 3 | ||||
-rw-r--r-- | drivers/usb/typec/tps6598x.c | 103 | ||||
-rw-r--r-- | drivers/usb/typec/ucsi/psy.c | 6 | ||||
-rw-r--r-- | drivers/usb/typec/ucsi/ucsi.c | 125 | ||||
-rw-r--r-- | drivers/usb/typec/ucsi/ucsi.h | 2 | ||||
-rw-r--r-- | drivers/usb/typec/ucsi/ucsi_acpi.c | 5 |
15 files changed, 886 insertions, 123 deletions
diff --git a/drivers/usb/typec/Kconfig b/drivers/usb/typec/Kconfig index 6c5908a37ee8..270e81c087e9 100644 --- a/drivers/usb/typec/Kconfig +++ b/drivers/usb/typec/Kconfig @@ -64,8 +64,9 @@ config TYPEC_HD3SS3220 config TYPEC_TPS6598X tristate "TI TPS6598x USB Power Delivery controller driver" depends on I2C - depends on REGMAP_I2C - depends on USB_ROLE_SWITCH || !USB_ROLE_SWITCH + select POWER_SUPPLY + select REGMAP_I2C + select USB_ROLE_SWITCH help Say Y or M here if your system has TI TPS65982 or TPS65983 USB Power Delivery controller. @@ -88,6 +89,7 @@ config TYPEC_STUSB160X config TYPEC_QCOM_PMIC tristate "Qualcomm PMIC USB Type-C driver" depends on ARCH_QCOM || COMPILE_TEST + depends on USB_ROLE_SWITCH || !USB_ROLE_SWITCH help Driver for supporting role switch over the Qualcomm PMIC. This will handle the USB Type-C role and orientation detection reported by the diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index 35eec707cb51..ebfd3113a9a8 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -11,6 +11,7 @@ #include <linux/mutex.h> #include <linux/property.h> #include <linux/slab.h> +#include <linux/usb/pd_vdo.h> #include "bus.h" @@ -18,6 +19,7 @@ struct typec_plug { struct device dev; enum typec_plug_index index; struct ida mode_ids; + int num_altmodes; }; struct typec_cable { @@ -33,6 +35,7 @@ struct typec_partner { struct usb_pd_identity *identity; enum typec_accessory accessory; struct ida mode_ids; + int num_altmodes; }; struct typec_port { @@ -81,6 +84,29 @@ static const char * const typec_accessory_modes[] = { [TYPEC_ACCESSORY_DEBUG] = "debug", }; +/* Product types defined in USB PD Specification R3.0 V2.0 */ +static const char * const product_type_ufp[8] = { + [IDH_PTYPE_UNDEF] = "undefined", + [IDH_PTYPE_HUB] = "hub", + [IDH_PTYPE_PERIPH] = "peripheral", + [IDH_PTYPE_PSD] = "psd", + [IDH_PTYPE_AMA] = "ama", +}; + +static const char * const product_type_dfp[8] = { + [IDH_PTYPE_DFP_UNDEF] = "undefined", + [IDH_PTYPE_DFP_HUB] = "hub", + [IDH_PTYPE_DFP_HOST] = "host", + [IDH_PTYPE_DFP_PB] = "power_brick", + [IDH_PTYPE_DFP_AMC] = "amc", +}; + +static const char * const product_type_cable[8] = { + [IDH_PTYPE_UNDEF] = "undefined", + [IDH_PTYPE_PCABLE] = "passive", + [IDH_PTYPE_ACABLE] = "active", +}; + static struct usb_pd_identity *get_pd_identity(struct device *dev) { if (is_typec_partner(dev)) { @@ -95,6 +121,32 @@ static struct usb_pd_identity *get_pd_identity(struct device *dev) return NULL; } +static const char *get_pd_product_type(struct device *dev) +{ + struct typec_port *port = to_typec_port(dev->parent); + struct usb_pd_identity *id = get_pd_identity(dev); + const char *ptype = NULL; + + if (is_typec_partner(dev)) { + if (!id) + return NULL; + + if (port->data_role == TYPEC_HOST) + ptype = product_type_ufp[PD_IDH_PTYPE(id->id_header)]; + else + ptype = product_type_dfp[PD_IDH_DFP_PTYPE(id->id_header)]; + } else if (is_typec_cable(dev)) { + if (id) + ptype = product_type_cable[PD_IDH_PTYPE(id->id_header)]; + else + ptype = to_typec_cable(dev)->active ? + product_type_cable[IDH_PTYPE_ACABLE] : + product_type_cable[IDH_PTYPE_PCABLE]; + } + + return ptype; +} + static ssize_t id_header_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -122,10 +174,40 @@ static ssize_t product_show(struct device *dev, struct device_attribute *attr, } static DEVICE_ATTR_RO(product); +static ssize_t product_type_vdo1_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct usb_pd_identity *id = get_pd_identity(dev); + + return sysfs_emit(buf, "0x%08x\n", id->vdo[0]); +} +static DEVICE_ATTR_RO(product_type_vdo1); + +static ssize_t product_type_vdo2_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct usb_pd_identity *id = get_pd_identity(dev); + + return sysfs_emit(buf, "0x%08x\n", id->vdo[1]); +} +static DEVICE_ATTR_RO(product_type_vdo2); + +static ssize_t product_type_vdo3_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct usb_pd_identity *id = get_pd_identity(dev); + + return sysfs_emit(buf, "0x%08x\n", id->vdo[2]); +} +static DEVICE_ATTR_RO(product_type_vdo3); + static struct attribute *usb_pd_id_attrs[] = { &dev_attr_id_header.attr, &dev_attr_cert_stat.attr, &dev_attr_product.attr, + &dev_attr_product_type_vdo1.attr, + &dev_attr_product_type_vdo2.attr, + &dev_attr_product_type_vdo3.attr, NULL }; @@ -139,12 +221,48 @@ static const struct attribute_group *usb_pd_id_groups[] = { NULL, }; +static void typec_product_type_notify(struct device *dev) +{ + char *envp[2] = { }; + const char *ptype; + + ptype = get_pd_product_type(dev); + if (!ptype) + return; + + sysfs_notify(&dev->kobj, NULL, "type"); + + envp[0] = kasprintf(GFP_KERNEL, "PRODUCT_TYPE=%s", ptype); + if (!envp[0]) + return; + + kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp); + kfree(envp[0]); +} + static void typec_report_identity(struct device *dev) { sysfs_notify(&dev->kobj, "identity", "id_header"); sysfs_notify(&dev->kobj, "identity", "cert_stat"); sysfs_notify(&dev->kobj, "identity", "product"); + sysfs_notify(&dev->kobj, "identity", "product_type_vdo1"); + sysfs_notify(&dev->kobj, "identity", "product_type_vdo2"); + sysfs_notify(&dev->kobj, "identity", "product_type_vdo3"); + typec_product_type_notify(dev); +} + +static ssize_t +type_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + const char *ptype; + + ptype = get_pd_product_type(dev); + if (!ptype) + return 0; + + return sysfs_emit(buf, "%s\n", ptype); } +static DEVICE_ATTR_RO(type); /* ------------------------------------------------------------------------- */ /* Alternate Modes */ @@ -382,7 +500,7 @@ static umode_t typec_altmode_attr_is_visible(struct kobject *kobj, return attr->mode; } -static struct attribute_group typec_altmode_group = { +static const struct attribute_group typec_altmode_group = { .is_visible = typec_altmode_attr_is_visible, .attrs = typec_altmode_attrs, }; @@ -482,6 +600,10 @@ typec_register_altmode(struct device *parent, if (is_typec_partner(parent)) alt->adev.dev.bus = &typec_bus; + /* Plug alt modes need a class to generate udev events. */ + if (is_typec_plug(parent)) + alt->adev.dev.class = typec_class; + ret = device_register(&alt->adev.dev); if (ret) { dev_err(parent, "failed to register alternate mode (%d)\n", @@ -532,12 +654,60 @@ static ssize_t supports_usb_power_delivery_show(struct device *dev, } static DEVICE_ATTR_RO(supports_usb_power_delivery); +static ssize_t number_of_alternate_modes_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct typec_partner *partner; + struct typec_plug *plug; + int num_altmodes; + + if (is_typec_partner(dev)) { + partner = to_typec_partner(dev); + num_altmodes = partner->num_altmodes; + } else if (is_typec_plug(dev)) { + plug = to_typec_plug(dev); + num_altmodes = plug->num_altmodes; + } else { + return 0; + } + + return sysfs_emit(buf, "%d\n", num_altmodes); +} +static DEVICE_ATTR_RO(number_of_alternate_modes); + static struct attribute *typec_partner_attrs[] = { &dev_attr_accessory_mode.attr, &dev_attr_supports_usb_power_delivery.attr, + &dev_attr_number_of_alternate_modes.attr, + &dev_attr_type.attr, + NULL +}; + +static umode_t typec_partner_attr_is_visible(struct kobject *kobj, struct attribute *attr, int n) +{ + struct typec_partner *partner = to_typec_partner(kobj_to_dev(kobj)); + + if (attr == &dev_attr_number_of_alternate_modes.attr) { + if (partner->num_altmodes < 0) + return 0; + } + + if (attr == &dev_attr_type.attr) + if (!get_pd_product_type(kobj_to_dev(kobj))) + return 0; + + return attr->mode; +} + +static const struct attribute_group typec_partner_group = { + .is_visible = typec_partner_attr_is_visible, + .attrs = typec_partner_attrs +}; + +static const struct attribute_group *typec_partner_groups[] = { + &typec_partner_group, NULL }; -ATTRIBUTE_GROUPS(typec_partner); static void typec_partner_release(struct device *dev) { @@ -571,6 +741,37 @@ int typec_partner_set_identity(struct typec_partner *partner) EXPORT_SYMBOL_GPL(typec_partner_set_identity); /** + * typec_partner_set_num_altmodes - Set the number of available partner altmodes + * @partner: The partner to be updated. + * @num_altmodes: The number of altmodes we want to specify as available. + * + * This routine is used to report the number of alternate modes supported by the + * partner. This value is *not* enforced in alternate mode registration routines. + * + * @partner.num_altmodes is set to -1 on partner registration, denoting that + * a valid value has not been set for it yet. + * + * Returns 0 on success or negative error number on failure. + */ +int typec_partner_set_num_altmodes(struct typec_partner *partner, int num_altmodes) +{ + int ret; + + if (num_altmodes < 0) + return -EINVAL; + + partner->num_altmodes = num_altmodes; + ret = sysfs_update_group(&partner->dev.kobj, &typec_partner_group); + if (ret < 0) + return ret; + + sysfs_notify(&partner->dev.kobj, NULL, "number_of_alternate_modes"); + + return 0; +} +EXPORT_SYMBOL_GPL(typec_partner_set_num_altmodes); + +/** * typec_partner_register_altmode - Register USB Type-C Partner Alternate Mode * @partner: USB Type-C Partner that supports the alternate mode * @desc: Description of the alternate mode @@ -612,6 +813,7 @@ struct typec_partner *typec_register_partner(struct typec_port *port, ida_init(&partner->mode_ids); partner->usb_pd = desc->usb_pd; partner->accessory = desc->accessory; + partner->num_altmodes = -1; if (desc->identity) { /* @@ -662,12 +864,71 @@ static void typec_plug_release(struct device *dev) kfree(plug); } +static struct attribute *typec_plug_attrs[] = { + &dev_attr_number_of_alternate_modes.attr, + NULL +}; + +static umode_t typec_plug_attr_is_visible(struct kobject *kobj, struct attribute *attr, int n) +{ + struct typec_plug *plug = to_typec_plug(kobj_to_dev(kobj)); + + if (attr == &dev_attr_number_of_alternate_modes.attr) { + if (plug->num_altmodes < 0) + return 0; + } + + return attr->mode; +} + +static const struct attribute_group typec_plug_group = { + .is_visible = typec_plug_attr_is_visible, + .attrs = typec_plug_attrs +}; + +static const struct attribute_group *typec_plug_groups[] = { + &typec_plug_group, + NULL +}; + static const struct device_type typec_plug_dev_type = { .name = "typec_plug", + .groups = typec_plug_groups, .release = typec_plug_release, }; /** + * typec_plug_set_num_altmodes - Set the number of available plug altmodes + * @plug: The plug to be updated. + * @num_altmodes: The number of altmodes we want to specify as available. + * + * This routine is used to report the number of alternate modes supported by the + * plug. This value is *not* enforced in alternate mode registration routines. + * + * @plug.num_altmodes is set to -1 on plug registration, denoting that + * a valid value has not been set for it yet. + * + * Returns 0 on success or negative error number on failure. + */ +int typec_plug_set_num_altmodes(struct typec_plug *plug, int num_altmodes) +{ + int ret; + + if (num_altmodes < 0) + return -EINVAL; + + plug->num_altmodes = num_altmodes; + ret = sysfs_update_group(&plug->dev.kobj, &typec_plug_group); + if (ret < 0) + return ret; + + sysfs_notify(&plug->dev.kobj, NULL, "number_of_alternate_modes"); + + return 0; +} +EXPORT_SYMBOL_GPL(typec_plug_set_num_altmodes); + +/** * typec_plug_register_altmode - Register USB Type-C Cable Plug Alternate Mode * @plug: USB Type-C Cable Plug that supports the alternate mode * @desc: Description of the alternate mode @@ -712,6 +973,7 @@ struct typec_plug *typec_register_plug(struct typec_cable *cable, sprintf(name, "plug%d", desc->index); ida_init(&plug->mode_ids); + plug->num_altmodes = -1; plug->index = desc->index; plug->dev.class = typec_class; plug->dev.parent = &cable->dev; @@ -744,15 +1006,6 @@ EXPORT_SYMBOL_GPL(typec_unregister_plug); /* Type-C Cables */ -static ssize_t -type_show(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct typec_cable *cable = to_typec_cable(dev); - - return sprintf(buf, "%s\n", cable->active ? "active" : "passive"); -} -static DEVICE_ATTR_RO(type); - static const char * const typec_plug_types[] = { [USB_PLUG_NONE] = "unknown", [USB_PLUG_TYPE_A] = "type-a", @@ -1309,7 +1562,7 @@ static umode_t typec_attr_is_visible(struct kobject *kobj, return attr->mode; } -static struct attribute_group typec_group = { +static const struct attribute_group typec_group = { .is_visible = typec_attr_is_visible, .attrs = typec_attrs, }; @@ -1352,6 +1605,11 @@ const struct device_type typec_port_dev_type = { /* --------------------------------------- */ /* Driver callbacks to report role updates */ +static int partner_match(struct device *dev, void *data) +{ + return is_typec_partner(dev); +} + /** * typec_set_data_role - Report data role change * @port: The USB Type-C Port where the role was changed @@ -1361,12 +1619,23 @@ const struct device_type typec_port_dev_type = { */ void typec_set_data_role(struct typec_port *port, enum typec_data_role role) { + struct device *partner_dev; + if (port->data_role == role) return; port->data_role = role; sysfs_notify(&port->dev.kobj, NULL, "data_role"); kobject_uevent(&port->dev.kobj, KOBJ_CHANGE); + + partner_dev = device_find_child(&port->dev, NULL, partner_match); + if (!partner_dev) + return; + + if (to_typec_partner(partner_dev)->identity) + typec_product_type_notify(partner_dev); + + put_device(partner_dev); } EXPORT_SYMBOL_GPL(typec_set_data_role); @@ -1407,11 +1676,6 @@ void typec_set_vconn_role(struct typec_port *port, enum typec_role role) } EXPORT_SYMBOL_GPL(typec_set_vconn_role); -static int partner_match(struct device *dev, void *data) -{ - return is_typec_partner(dev); -} - /** * typec_set_pwr_opmode - Report changed power operation mode * @port: The USB Type-C Port where the mode was changed diff --git a/drivers/usb/typec/mux/intel_pmc_mux.c b/drivers/usb/typec/mux/intel_pmc_mux.c index d7f63b74c6b1..cf37a59ce130 100644 --- a/drivers/usb/typec/mux/intel_pmc_mux.c +++ b/drivers/usb/typec/mux/intel_pmc_mux.c @@ -176,6 +176,7 @@ static int hsl_orientation(struct pmc_usb_port *port) static int pmc_usb_command(struct pmc_usb_port *port, u8 *msg, u32 len) { u8 response[4]; + u8 status_res; int ret; /* @@ -189,9 +190,13 @@ static int pmc_usb_command(struct pmc_usb_port *port, u8 *msg, u32 len) if (ret) return ret; - if (response[2] & PMC_USB_RESP_STATUS_FAILURE) { - if (response[2] & PMC_USB_RESP_STATUS_FATAL) + status_res = (msg[0] & 0xf) < PMC_USB_SAFE_MODE ? + response[2] : response[1]; + + if (status_res & PMC_USB_RESP_STATUS_FAILURE) { + if (status_res & PMC_USB_RESP_STATUS_FATAL) return -EIO; + return -EBUSY; } @@ -256,6 +261,7 @@ static int pmc_usb_mux_tbt(struct pmc_usb_port *port, struct typec_mux_state *state) { struct typec_thunderbolt_data *data = state->data; + u8 cable_rounded = TBT_CABLE_ROUNDED_SUPPORT(data->cable_mode); u8 cable_speed = TBT_CABLE_SPEED(data->cable_mode); struct altmode_req req = { }; @@ -284,6 +290,8 @@ pmc_usb_mux_tbt(struct pmc_usb_port *port, struct typec_mux_state *state) req.mode_data |= PMC_USB_ALTMODE_CABLE_SPD(cable_speed); + req.mode_data |= PMC_USB_ALTMODE_TBT_GEN(cable_rounded); + return pmc_usb_command(port, (void *)&req, sizeof(req)); } @@ -319,6 +327,11 @@ pmc_usb_mux_usb4(struct pmc_usb_port *port, struct typec_mux_state *state) fallthrough; default: req.mode_data |= PMC_USB_ALTMODE_ACTIVE_CABLE; + + /* Configure data rate to rounded in the case of Active TBT3 + * and USB4 cables. + */ + req.mode_data |= PMC_USB_ALTMODE_TBT_GEN(1); break; } diff --git a/drivers/usb/typec/stusb160x.c b/drivers/usb/typec/stusb160x.c index 2a618f02f4f1..d21750bbbb44 100644 --- a/drivers/usb/typec/stusb160x.c +++ b/drivers/usb/typec/stusb160x.c @@ -562,7 +562,7 @@ static int stusb160x_get_fw_caps(struct stusb160x *chip, * Supported power operation mode can be configured through device tree * else it is read from chip registers in stusb160x_get_caps. */ - ret = fwnode_property_read_string(fwnode, "power-opmode", &cap_str); + ret = fwnode_property_read_string(fwnode, "typec-power-opmode", &cap_str); if (!ret) { ret = typec_find_pwr_opmode(cap_str); /* Power delivery not yet supported */ diff --git a/drivers/usb/typec/tcpm/fusb302.c b/drivers/usb/typec/tcpm/fusb302.c index 99562cc65ca6..ebc46b9f776c 100644 --- a/drivers/usb/typec/tcpm/fusb302.c +++ b/drivers/usb/typec/tcpm/fusb302.c @@ -343,12 +343,11 @@ static int fusb302_sw_reset(struct fusb302_chip *chip) return ret; } -static int fusb302_enable_tx_auto_retries(struct fusb302_chip *chip) +static int fusb302_enable_tx_auto_retries(struct fusb302_chip *chip, u8 retry_count) { int ret = 0; - ret = fusb302_i2c_set_bits(chip, FUSB_REG_CONTROL3, - FUSB_REG_CONTROL3_N_RETRIES_3 | + ret = fusb302_i2c_set_bits(chip, FUSB_REG_CONTROL3, retry_count | FUSB_REG_CONTROL3_AUTO_RETRY); return ret; @@ -399,7 +398,7 @@ static int tcpm_init(struct tcpc_dev *dev) ret = fusb302_sw_reset(chip); if (ret < 0) return ret; - ret = fusb302_enable_tx_auto_retries(chip); + ret = fusb302_enable_tx_auto_retries(chip, FUSB_REG_CONTROL3_N_RETRIES_3); if (ret < 0) return ret; ret = fusb302_init_interrupt(chip); @@ -1017,7 +1016,7 @@ static const char * const transmit_type_name[] = { }; static int tcpm_pd_transmit(struct tcpc_dev *dev, enum tcpm_transmit_type type, - const struct pd_message *msg) + const struct pd_message *msg, unsigned int negotiated_rev) { struct fusb302_chip *chip = container_of(dev, struct fusb302_chip, tcpc_dev); @@ -1026,6 +1025,13 @@ static int tcpm_pd_transmit(struct tcpc_dev *dev, enum tcpm_transmit_type type, mutex_lock(&chip->lock); switch (type) { case TCPC_TX_SOP: + /* nRetryCount 3 in P2.0 spec, whereas 2 in PD3.0 spec */ + ret = fusb302_enable_tx_auto_retries(chip, negotiated_rev > PD_REV20 ? + FUSB_REG_CONTROL3_N_RETRIES_2 : + FUSB_REG_CONTROL3_N_RETRIES_3); + if (ret < 0) + fusb302_log(chip, "Cannot update retry count ret=%d", ret); + ret = fusb302_pd_send_message(chip, msg); if (ret < 0) fusb302_log(chip, diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c index f9f0af64da5f..f676abab044b 100644 --- a/drivers/usb/typec/tcpm/tcpci.c +++ b/drivers/usb/typec/tcpm/tcpci.c @@ -18,7 +18,11 @@ #include "tcpci.h" -#define PD_RETRY_COUNT 3 +#define PD_RETRY_COUNT_DEFAULT 3 +#define PD_RETRY_COUNT_3_0_OR_HIGHER 2 +#define AUTO_DISCHARGE_DEFAULT_THRESHOLD_MV 3500 +#define AUTO_DISCHARGE_PD_HEADROOM_MV 850 +#define AUTO_DISCHARGE_PPS_HEADROOM_MV 1250 struct tcpci { struct device *dev; @@ -268,6 +272,58 @@ static int tcpci_set_vconn(struct tcpc_dev *tcpc, bool enable) enable ? TCPC_POWER_CTRL_VCONN_ENABLE : 0); } +static int tcpci_enable_auto_vbus_discharge(struct tcpc_dev *dev, bool enable) +{ + struct tcpci *tcpci = tcpc_to_tcpci(dev); + int ret; + + ret = regmap_update_bits(tcpci->regmap, TCPC_POWER_CTRL, TCPC_POWER_CTRL_AUTO_DISCHARGE, + enable ? TCPC_POWER_CTRL_AUTO_DISCHARGE : 0); + return ret; +} + +static int tcpci_set_auto_vbus_discharge_threshold(struct tcpc_dev *dev, enum typec_pwr_opmode mode, + bool pps_active, u32 requested_vbus_voltage_mv) +{ + struct tcpci *tcpci = tcpc_to_tcpci(dev); + unsigned int pwr_ctrl, threshold = 0; + int ret; + + /* + * Indicates that vbus is going to go away due PR_SWAP, hard reset etc. + * Do not discharge vbus here. + */ + if (requested_vbus_voltage_mv == 0) + goto write_thresh; + + ret = regmap_read(tcpci->regmap, TCPC_POWER_CTRL, &pwr_ctrl); + if (ret < 0) + return ret; + + if (pwr_ctrl & TCPC_FAST_ROLE_SWAP_EN) { + /* To prevent disconnect when the source is fast role swap is capable. */ + threshold = AUTO_DISCHARGE_DEFAULT_THRESHOLD_MV; + } else if (mode == TYPEC_PWR_MODE_PD) { + if (pps_active) + threshold = (95 * requested_vbus_voltage_mv / 100) - + AUTO_DISCHARGE_PD_HEADROOM_MV; + else + threshold = (95 * requested_vbus_voltage_mv / 100) - + AUTO_DISCHARGE_PPS_HEADROOM_MV; + } else { + /* 3.5V for non-pd sink */ + threshold = AUTO_DISCHARGE_DEFAULT_THRESHOLD_MV; + } + + threshold = threshold / TCPC_VBUS_SINK_DISCONNECT_THRESH_LSB_MV; + + if (threshold > TCPC_VBUS_SINK_DISCONNECT_THRESH_MAX) + return -EINVAL; + +write_thresh: + return tcpci_write16(tcpci, TCPC_VBUS_SINK_DISCONNECT_THRESH, threshold); +} + static int tcpci_enable_frs(struct tcpc_dev *dev, bool enable) { struct tcpci *tcpci = tcpc_to_tcpci(dev); @@ -284,6 +340,14 @@ static int tcpci_enable_frs(struct tcpc_dev *dev, bool enable) return ret; } +static void tcpci_frs_sourcing_vbus(struct tcpc_dev *dev) +{ + struct tcpci *tcpci = tcpc_to_tcpci(dev); + + if (tcpci->data->frs_sourcing_vbus) + tcpci->data->frs_sourcing_vbus(tcpci, tcpci->data); +} + static int tcpci_set_bist_data(struct tcpc_dev *tcpc, bool enable) { struct tcpci *tcpci = tcpc_to_tcpci(tcpc); @@ -339,6 +403,19 @@ static int tcpci_get_vbus(struct tcpc_dev *tcpc) return !!(reg & TCPC_POWER_STATUS_VBUS_PRES); } +static bool tcpci_is_vbus_vsafe0v(struct tcpc_dev *tcpc) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + unsigned int reg; + int ret; + + ret = regmap_read(tcpci->regmap, TCPC_EXTENDED_STATUS, ®); + if (ret < 0) + return false; + + return !!(reg & TCPC_EXTENDED_STATUS_VSAFE0V); +} + static int tcpci_set_vbus(struct tcpc_dev *tcpc, bool source, bool sink) { struct tcpci *tcpci = tcpc_to_tcpci(tcpc); @@ -384,9 +461,8 @@ static int tcpci_set_vbus(struct tcpc_dev *tcpc, bool source, bool sink) return 0; } -static int tcpci_pd_transmit(struct tcpc_dev *tcpc, - enum tcpm_transmit_type type, - const struct pd_message *msg) +static int tcpci_pd_transmit(struct tcpc_dev *tcpc, enum tcpm_transmit_type type, + const struct pd_message *msg, unsigned int negotiated_rev) { struct tcpci *tcpci = tcpc_to_tcpci(tcpc); u16 header = msg ? le16_to_cpu(msg->header) : 0; @@ -434,7 +510,9 @@ static int tcpci_pd_transmit(struct tcpc_dev *tcpc, } } - reg = (PD_RETRY_COUNT << TCPC_TRANSMIT_RETRY_SHIFT) | (type << TCPC_TRANSMIT_TYPE_SHIFT); + /* nRetryCount is 3 in PD2.0 spec where 2 in PD3.0 spec */ + reg = ((negotiated_rev > PD_REV20 ? PD_RETRY_COUNT_3_0_OR_HIGHER : PD_RETRY_COUNT_DEFAULT) + << TCPC_TRANSMIT_RETRY_SHIFT) | (type << TCPC_TRANSMIT_TYPE_SHIFT); ret = regmap_write(tcpci->regmap, TCPC_TRANSMIT, reg); if (ret < 0) return ret; @@ -491,12 +569,22 @@ static int tcpci_init(struct tcpc_dev *tcpc) TCPC_ALERT_RX_HARD_RST | TCPC_ALERT_CC_STATUS; if (tcpci->controls_vbus) reg |= TCPC_ALERT_POWER_STATUS; + /* Enable VSAFE0V status interrupt when detecting VSAFE0V is supported */ + if (tcpci->data->vbus_vsafe0v) { + reg |= TCPC_ALERT_EXTENDED_STATUS; + ret = regmap_write(tcpci->regmap, TCPC_EXTENDED_STATUS_MASK, + TCPC_EXTENDED_STATUS_VSAFE0V); + if (ret < 0) + return ret; + } return tcpci_write16(tcpci, TCPC_ALERT_MASK, reg); } irqreturn_t tcpci_irq(struct tcpci *tcpci) { u16 status; + int ret; + unsigned int raw; tcpci_read16(tcpci, TCPC_ALERT, &status); @@ -512,15 +600,12 @@ irqreturn_t tcpci_irq(struct tcpci *tcpci) tcpm_cc_change(tcpci->port); if (status & TCPC_ALERT_POWER_STATUS) { - unsigned int reg; - - regmap_read(tcpci->regmap, TCPC_POWER_STATUS_MASK, ®); - + regmap_read(tcpci->regmap, TCPC_POWER_STATUS_MASK, &raw); /* * If power status mask has been reset, then the TCPC * has reset. */ - if (reg == 0xff) + if (raw == 0xff) tcpm_tcpc_reset(tcpci->port); else tcpm_vbus_change(tcpci->port); @@ -559,6 +644,12 @@ irqreturn_t tcpci_irq(struct tcpci *tcpci) tcpm_pd_receive(tcpci->port, &msg); } + if (status & TCPC_ALERT_EXTENDED_STATUS) { + ret = regmap_read(tcpci->regmap, TCPC_EXTENDED_STATUS, &raw); + if (!ret && (raw & TCPC_EXTENDED_STATUS_VSAFE0V)) + tcpm_vbus_change(tcpci->port); + } + if (status & TCPC_ALERT_RX_HARD_RST) tcpm_pd_hard_reset(tcpci->port); @@ -628,6 +719,18 @@ struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data) tcpci->tcpc.pd_transmit = tcpci_pd_transmit; tcpci->tcpc.set_bist_data = tcpci_set_bist_data; tcpci->tcpc.enable_frs = tcpci_enable_frs; + tcpci->tcpc.frs_sourcing_vbus = tcpci_frs_sourcing_vbus; + + if (tcpci->data->auto_discharge_disconnect) { + tcpci->tcpc.enable_auto_vbus_discharge = tcpci_enable_auto_vbus_discharge; + tcpci->tcpc.set_auto_vbus_discharge_threshold = + tcpci_set_auto_vbus_discharge_threshold; + regmap_update_bits(tcpci->regmap, TCPC_POWER_CTRL, TCPC_POWER_CTRL_BLEED_DISCHARGE, + TCPC_POWER_CTRL_BLEED_DISCHARGE); + } + + if (tcpci->data->vbus_vsafe0v) + tcpci->tcpc.is_vbus_vsafe0v = tcpci_is_vbus_vsafe0v; err = tcpci_parse_config(tcpci); if (err < 0) diff --git a/drivers/usb/typec/tcpm/tcpci.h b/drivers/usb/typec/tcpm/tcpci.h index 5ef07a56d67a..c3c7d07d9b4e 100644 --- a/drivers/usb/typec/tcpm/tcpci.h +++ b/drivers/usb/typec/tcpm/tcpci.h @@ -8,6 +8,8 @@ #ifndef __LINUX_USB_TCPCI_H #define __LINUX_USB_TCPCI_H +#include <linux/usb/typec.h> + #define TCPC_VENDOR_ID 0x0 #define TCPC_PRODUCT_ID 0x2 #define TCPC_BCD_DEV 0x4 @@ -47,6 +49,9 @@ #define TCPC_TCPC_CTRL_ORIENTATION BIT(0) #define TCPC_TCPC_CTRL_BIST_TM BIT(1) +#define TCPC_EXTENDED_STATUS 0x20 +#define TCPC_EXTENDED_STATUS_VSAFE0V BIT(0) + #define TCPC_ROLE_CTRL 0x1a #define TCPC_ROLE_CTRL_DRP BIT(6) #define TCPC_ROLE_CTRL_RP_VAL_SHIFT 4 @@ -67,6 +72,8 @@ #define TCPC_POWER_CTRL 0x1c #define TCPC_POWER_CTRL_VCONN_ENABLE BIT(0) +#define TCPC_POWER_CTRL_BLEED_DISCHARGE BIT(3) +#define TCPC_POWER_CTRL_AUTO_DISCHARGE BIT(4) #define TCPC_FAST_ROLE_SWAP_EN BIT(7) #define TCPC_CC_STATUS 0x1d @@ -133,6 +140,8 @@ #define TCPC_VBUS_VOLTAGE 0x70 #define TCPC_VBUS_SINK_DISCONNECT_THRESH 0x72 +#define TCPC_VBUS_SINK_DISCONNECT_THRESH_LSB_MV 25 +#define TCPC_VBUS_SINK_DISCONNECT_THRESH_MAX 0x3ff #define TCPC_VBUS_STOP_DISCHARGE_THRESH 0x74 #define TCPC_VBUS_VOLTAGE_ALARM_HI_CFG 0x76 #define TCPC_VBUS_VOLTAGE_ALARM_LO_CFG 0x78 @@ -140,20 +149,32 @@ /* I2C_WRITE_BYTE_COUNT + 1 when TX_BUF_BYTE_x is only accessible I2C_WRITE_BYTE_COUNT */ #define TCPC_TRANSMIT_BUFFER_MAX_LEN 31 +struct tcpci; + /* - * @TX_BUF_BYTE_x_hidden + * @TX_BUF_BYTE_x_hidden: * optional; Set when TX_BUF_BYTE_x can only be accessed through I2C_WRITE_BYTE_COUNT. + * @frs_sourcing_vbus: + * Optional; Callback to perform chip specific operations when FRS + * is sourcing vbus. + * @auto_discharge_disconnect: + * Optional; Enables TCPC to autonously discharge vbus on disconnect. + * @vbus_vsafe0v: + * optional; Set when TCPC can detect whether vbus is at VSAFE0V. */ -struct tcpci; struct tcpci_data { struct regmap *regmap; unsigned char TX_BUF_BYTE_x_hidden:1; + unsigned char auto_discharge_disconnect:1; + unsigned char vbus_vsafe0v:1; + int (*init)(struct tcpci *tcpci, struct tcpci_data *data); int (*set_vconn)(struct tcpci *tcpci, struct tcpci_data *data, bool enable); int (*start_drp_toggling)(struct tcpci *tcpci, struct tcpci_data *data, enum typec_cc_status cc); int (*set_vbus)(struct tcpci *tcpci, struct tcpci_data *data, bool source, bool sink); + void (*frs_sourcing_vbus)(struct tcpci *tcpci, struct tcpci_data *data); }; struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data); diff --git a/drivers/usb/typec/tcpm/tcpci_maxim.c b/drivers/usb/typec/tcpm/tcpci_maxim.c index 723d7dd38f75..319266329b42 100644 --- a/drivers/usb/typec/tcpm/tcpci_maxim.c +++ b/drivers/usb/typec/tcpm/tcpci_maxim.c @@ -112,11 +112,18 @@ static void max_tcpci_init_regs(struct max_tcpci_chip *chip) return; } + /* Enable VSAFE0V detection */ + ret = max_tcpci_write8(chip, TCPC_EXTENDED_STATUS_MASK, TCPC_EXTENDED_STATUS_VSAFE0V); + if (ret < 0) { + dev_err(chip->dev, "Unable to unmask TCPC_EXTENDED_STATUS_VSAFE0V ret:%d\n", ret); + return; + } + alert_mask = TCPC_ALERT_TX_SUCCESS | TCPC_ALERT_TX_DISCARDED | TCPC_ALERT_TX_FAILED | TCPC_ALERT_RX_HARD_RST | TCPC_ALERT_RX_STATUS | TCPC_ALERT_CC_STATUS | TCPC_ALERT_VBUS_DISCNCT | TCPC_ALERT_RX_BUF_OVF | TCPC_ALERT_POWER_STATUS | /* Enable Extended alert for detecting Fast Role Swap Signal */ - TCPC_ALERT_EXTND; + TCPC_ALERT_EXTND | TCPC_ALERT_EXTENDED_STATUS; ret = max_tcpci_write16(chip, TCPC_ALERT_MASK, alert_mask); if (ret < 0) { @@ -238,23 +245,22 @@ static void process_power_status(struct max_tcpci_chip *chip) if (ret < 0) return; - if (pwr_status == 0xff) { + if (pwr_status == 0xff) max_tcpci_init_regs(chip); - } else if (pwr_status & TCPC_POWER_STATUS_SOURCING_VBUS) { + else if (pwr_status & TCPC_POWER_STATUS_SOURCING_VBUS) tcpm_sourcing_vbus(chip->port); - /* - * Alawys re-enable boost here. - * In normal case, when say an headset is attached, TCPM would - * have instructed to TCPC to enable boost, so the call is a - * no-op. - * But for Fast Role Swap case, Boost turns on autonomously without - * AP intervention, but, needs AP to enable source mode explicitly - * for AP to regain control. - */ - max_tcpci_set_vbus(chip->tcpci, &chip->data, true, false); - } else { + else tcpm_vbus_change(chip->port); - } +} + +static void max_tcpci_frs_sourcing_vbus(struct tcpci *tcpci, struct tcpci_data *tdata) +{ + /* + * For Fast Role Swap case, Boost turns on autonomously without + * AP intervention, but, needs AP to enable source mode explicitly + * for AP to regain control. + */ + max_tcpci_set_vbus(tcpci, tdata, true, false); } static void process_tx(struct max_tcpci_chip *chip, u16 status) @@ -316,6 +322,12 @@ static irqreturn_t _max_tcpci_irq(struct max_tcpci_chip *chip, u16 status) } } + if (status & TCPC_ALERT_EXTENDED_STATUS) { + ret = max_tcpci_read8(chip, TCPC_EXTENDED_STATUS, (u8 *)®_status); + if (ret >= 0 && (reg_status & TCPC_EXTENDED_STATUS_VSAFE0V)) + tcpm_vbus_change(chip->port); + } + if (status & TCPC_ALERT_RX_STATUS) process_rx(chip, status); @@ -344,7 +356,7 @@ static irqreturn_t max_tcpci_irq(int irq, void *dev_id) { struct max_tcpci_chip *chip = dev_id; u16 status; - irqreturn_t irq_return; + irqreturn_t irq_return = IRQ_HANDLED; int ret; if (!chip->port) @@ -441,10 +453,13 @@ static int max_tcpci_probe(struct i2c_client *client, const struct i2c_device_id chip->data.start_drp_toggling = max_tcpci_start_toggling; chip->data.TX_BUF_BYTE_x_hidden = true; chip->data.init = tcpci_init; + chip->data.frs_sourcing_vbus = max_tcpci_frs_sourcing_vbus; + chip->data.auto_discharge_disconnect = true; + chip->data.vbus_vsafe0v = true; max_tcpci_init_regs(chip); chip->tcpci = tcpci_register_port(chip->dev, &chip->data); - if (IS_ERR_OR_NULL(chip->tcpci)) { + if (IS_ERR(chip->tcpci)) { dev_err(&client->dev, "TCPCI port registration failed"); ret = PTR_ERR(chip->tcpci); return PTR_ERR(chip->tcpci); @@ -481,7 +496,7 @@ MODULE_DEVICE_TABLE(i2c, max_tcpci_id); #ifdef CONFIG_OF static const struct of_device_id max_tcpci_of_match[] = { - { .compatible = "maxim,tcpc", }, + { .compatible = "maxim,max33359", }, {}, }; MODULE_DEVICE_TABLE(of, max_tcpci_of_match); diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index a6fae1f86505..22a85b396f69 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -258,7 +258,19 @@ struct tcpm_port { bool attached; bool connected; enum typec_port_type port_type; + + /* + * Set to true when vbus is greater than VSAFE5V min. + * Set to false when vbus falls below vSinkDisconnect max threshold. + */ bool vbus_present; + + /* + * Set to true when vbus is less than VSAFE0V max. + * Set to false when vbus is greater than VSAFE0V max. + */ + bool vbus_vsafe0v; + bool vbus_never_low; bool vbus_source; bool vbus_charge; @@ -363,8 +375,8 @@ struct tcpm_port { /* port belongs to a self powered device */ bool self_powered; - /* FRS */ - enum frs_typec_current frs_current; + /* Sink FRS */ + enum frs_typec_current new_source_frs_current; /* Sink caps have been queried */ bool sink_cap_done; @@ -667,7 +679,7 @@ static int tcpm_pd_transmit(struct tcpm_port *port, tcpm_log(port, "PD TX, type: %#x", type); reinit_completion(&port->tx_complete); - ret = port->tcpc->pd_transmit(port->tcpc, type, msg); + ret = port->tcpc->pd_transmit(port->tcpc, type, msg, port->negotiated_rev); if (ret < 0) return ret; @@ -1706,6 +1718,24 @@ static void tcpm_handle_alert(struct tcpm_port *port, const __le32 *payload, } } +static int tcpm_set_auto_vbus_discharge_threshold(struct tcpm_port *port, + enum typec_pwr_opmode mode, bool pps_active, + u32 requested_vbus_voltage) +{ + int ret; + + if (!port->tcpc->set_auto_vbus_discharge_threshold) + return 0; + + ret = port->tcpc->set_auto_vbus_discharge_threshold(port->tcpc, mode, pps_active, + requested_vbus_voltage); + tcpm_log_force(port, + "set_auto_vbus_discharge_threshold mode:%d pps_active:%c vbus:%u ret:%d", + mode, pps_active ? 'y' : 'n', requested_vbus_voltage, ret); + + return ret; +} + static void tcpm_pd_data_request(struct tcpm_port *port, const struct pd_message *msg) { @@ -1713,7 +1743,7 @@ static void tcpm_pd_data_request(struct tcpm_port *port, unsigned int cnt = pd_header_cnt_le(msg->header); unsigned int rev = pd_header_rev_le(msg->header); unsigned int i; - enum frs_typec_current frs_current; + enum frs_typec_current partner_frs_current; bool frs_enable; int ret; @@ -1786,12 +1816,13 @@ static void tcpm_pd_data_request(struct tcpm_port *port, for (i = 0; i < cnt; i++) port->sink_caps[i] = le32_to_cpu(msg->payload[i]); - frs_current = (port->sink_caps[0] & PDO_FIXED_FRS_CURR_MASK) >> + partner_frs_current = (port->sink_caps[0] & PDO_FIXED_FRS_CURR_MASK) >> PDO_FIXED_FRS_CURR_SHIFT; - frs_enable = frs_current && (frs_current <= port->frs_current); + frs_enable = partner_frs_current && (partner_frs_current <= + port->new_source_frs_current); tcpm_log(port, "Port partner FRS capable partner_frs_current:%u port_frs_current:%u enable:%c", - frs_current, port->frs_current, frs_enable ? 'y' : 'n'); + partner_frs_current, port->new_source_frs_current, frs_enable ? 'y' : 'n'); if (frs_enable) { ret = port->tcpc->enable_frs(port->tcpc, true); tcpm_log(port, "Enable FRS %s, ret:%d\n", ret ? "fail" : "success", ret); @@ -1875,6 +1906,10 @@ static void tcpm_pd_ctrl_request(struct tcpm_port *port, port->current_limit, port->supply_voltage); port->explicit_contract = true; + tcpm_set_auto_vbus_discharge_threshold(port, + TYPEC_PWR_MODE_PD, + port->pps_data.active, + port->supply_voltage); tcpm_set_state(port, SNK_READY, 0); } else { /* @@ -2193,6 +2228,7 @@ static int tcpm_pd_send_control(struct tcpm_port *port, static bool tcpm_send_queued_message(struct tcpm_port *port) { enum pd_msg_request queued_message; + int ret; do { queued_message = port->queued_message; @@ -2212,7 +2248,16 @@ static bool tcpm_send_queued_message(struct tcpm_port *port) tcpm_pd_send_sink_caps(port); break; case PD_MSG_DATA_SOURCE_CAP: - tcpm_pd_send_source_caps(port); + ret = tcpm_pd_send_source_caps(port); + if (ret < 0) { + tcpm_log(port, + "Unable to send src caps, ret=%d", + ret); + tcpm_set_state(port, SOFT_RESET_SEND, 0); + } else if (port->pwr_role == TYPEC_SOURCE) { + tcpm_set_state(port, HARD_RESET_SEND, + PD_T_SENDER_RESPONSE); + } break; default: break; @@ -2789,8 +2834,12 @@ static int tcpm_src_attach(struct tcpm_port *port) if (ret < 0) return ret; - ret = tcpm_set_roles(port, true, TYPEC_SOURCE, - tcpm_data_role_for_source(port)); + if (port->tcpc->enable_auto_vbus_discharge) { + ret = port->tcpc->enable_auto_vbus_discharge(port->tcpc, true); + tcpm_log_force(port, "enable vbus discharge ret:%d", ret); + } + + ret = tcpm_set_roles(port, true, TYPEC_SOURCE, tcpm_data_role_for_source(port)); if (ret < 0) return ret; @@ -2857,6 +2906,12 @@ static void tcpm_unregister_altmodes(struct tcpm_port *port) static void tcpm_reset_port(struct tcpm_port *port) { + int ret; + + if (port->tcpc->enable_auto_vbus_discharge) { + ret = port->tcpc->enable_auto_vbus_discharge(port->tcpc, false); + tcpm_log_force(port, "Disable vbus discharge ret:%d", ret); + } tcpm_unregister_altmodes(port); tcpm_typec_disconnect(port); port->attached = false; @@ -2921,8 +2976,13 @@ static int tcpm_snk_attach(struct tcpm_port *port) if (ret < 0) return ret; - ret = tcpm_set_roles(port, true, TYPEC_SINK, - tcpm_data_role_for_sink(port)); + if (port->tcpc->enable_auto_vbus_discharge) { + tcpm_set_auto_vbus_discharge_threshold(port, TYPEC_PWR_MODE_USB, false, VSAFE5V); + ret = port->tcpc->enable_auto_vbus_discharge(port->tcpc, true); + tcpm_log_force(port, "enable vbus discharge ret:%d", ret); + } + + ret = tcpm_set_roles(port, true, TYPEC_SINK, tcpm_data_role_for_sink(port)); if (ret < 0) return ret; @@ -2997,10 +3057,9 @@ static inline enum tcpm_state unattached_state(struct tcpm_port *port) static void tcpm_check_send_discover(struct tcpm_port *port) { if (port->data_role == TYPEC_HOST && port->send_discover && - port->pd_capable) { + port->pd_capable) tcpm_send_vdm(port, USB_SID_PD, CMD_DISCOVER_IDENT, NULL, 0); - port->send_discover = false; - } + port->send_discover = false; } static void tcpm_swap_complete(struct tcpm_port *port, int result) @@ -3056,7 +3115,7 @@ static void run_state_machine(struct tcpm_port *port) else if (tcpm_port_is_audio(port)) tcpm_set_state(port, AUDIO_ACC_ATTACHED, PD_T_CC_DEBOUNCE); - else if (tcpm_port_is_source(port)) + else if (tcpm_port_is_source(port) && port->vbus_vsafe0v) tcpm_set_state(port, tcpm_try_snk(port) ? SNK_TRY : SRC_ATTACHED, @@ -3086,15 +3145,13 @@ static void run_state_machine(struct tcpm_port *port) break; case SNK_TRY_WAIT_DEBOUNCE: tcpm_set_state(port, SNK_TRY_WAIT_DEBOUNCE_CHECK_VBUS, - PD_T_PD_DEBOUNCE); + PD_T_TRY_CC_DEBOUNCE); break; case SNK_TRY_WAIT_DEBOUNCE_CHECK_VBUS: - if (port->vbus_present && tcpm_port_is_sink(port)) { + if (port->vbus_present && tcpm_port_is_sink(port)) tcpm_set_state(port, SNK_ATTACHED, 0); - } else { - tcpm_set_state(port, SRC_TRYWAIT, 0); + else port->max_wait = 0; - } break; case SRC_TRYWAIT: tcpm_set_cc(port, tcpm_rp_cc(port)); @@ -3506,6 +3563,8 @@ static void run_state_machine(struct tcpm_port *port) tcpm_set_state(port, SRC_UNATTACHED, PD_T_PS_SOURCE_ON); break; case SNK_HARD_RESET_SINK_OFF: + /* Do not discharge/disconnect during hard reseet */ + tcpm_set_auto_vbus_discharge_threshold(port, TYPEC_PWR_MODE_USB, false, 0); memset(&port->pps_data, 0, sizeof(port->pps_data)); tcpm_set_vconn(port, false); if (port->pd_capable) @@ -3548,6 +3607,7 @@ static void run_state_machine(struct tcpm_port *port) tcpm_set_charge(port, true); } tcpm_set_attached_state(port, true); + tcpm_set_auto_vbus_discharge_threshold(port, TYPEC_PWR_MODE_USB, false, VSAFE5V); tcpm_set_state(port, SNK_STARTUP, 0); break; @@ -3649,6 +3709,10 @@ static void run_state_machine(struct tcpm_port *port) tcpm_set_state(port, PR_SWAP_SNK_SRC_SINK_OFF, 0); break; case PR_SWAP_SRC_SNK_TRANSITION_OFF: + /* + * Prevent vbus discharge circuit from turning on during PR_SWAP + * as this is not a disconnect. + */ tcpm_set_vbus(port, false); port->explicit_contract = false; /* allow time for Vbus discharge, must be < tSrcSwapStdby */ @@ -3674,12 +3738,20 @@ static void run_state_machine(struct tcpm_port *port) tcpm_set_state(port, ERROR_RECOVERY, 0); break; } - tcpm_set_state_cond(port, SNK_UNATTACHED, PD_T_PS_SOURCE_ON); + tcpm_set_state(port, ERROR_RECOVERY, PD_T_PS_SOURCE_ON_PRS); break; case PR_SWAP_SRC_SNK_SINK_ON: + /* Set the vbus disconnect threshold for implicit contract */ + tcpm_set_auto_vbus_discharge_threshold(port, TYPEC_PWR_MODE_USB, false, VSAFE5V); tcpm_set_state(port, SNK_STARTUP, 0); break; case PR_SWAP_SNK_SRC_SINK_OFF: + /* + * Prevent vbus discharge circuit from turning on during PR_SWAP + * as this is not a disconnect. + */ + tcpm_set_auto_vbus_discharge_threshold(port, TYPEC_PWR_MODE_USB, + port->pps_data.active, 0); tcpm_set_charge(port, false); tcpm_set_state(port, hard_reset_state(port), PD_T_PS_SOURCE_OFF); @@ -4000,6 +4072,12 @@ static void _tcpm_cc_change(struct tcpm_port *port, enum typec_cc_status cc1, if (!tcpm_port_is_sink(port)) tcpm_set_state(port, SNK_TRYWAIT_DEBOUNCE, 0); break; + case SNK_TRY_WAIT_DEBOUNCE_CHECK_VBUS: + if (!tcpm_port_is_sink(port)) + tcpm_set_state(port, SRC_TRYWAIT, PD_T_TRY_CC_DEBOUNCE); + else + tcpm_set_state(port, SNK_TRY_WAIT_DEBOUNCE_CHECK_VBUS, 0); + break; case SNK_TRYWAIT: /* Do nothing, waiting for tCCDebounce */ break; @@ -4040,6 +4118,12 @@ static void _tcpm_pd_vbus_on(struct tcpm_port *port) { tcpm_log_force(port, "VBUS on"); port->vbus_present = true; + /* + * When vbus_present is true i.e. Voltage at VBUS is greater than VSAFE5V implicitly + * states that vbus is not at VSAFE0V, hence clear the vbus_vsafe0v flag here. + */ + port->vbus_vsafe0v = false; + switch (port->state) { case SNK_TRANSITION_SINK_VBUS: port->explicit_contract = true; @@ -4086,11 +4170,24 @@ static void _tcpm_pd_vbus_on(struct tcpm_port *port) case SNK_TRYWAIT_DEBOUNCE: /* Do nothing, waiting for Rp */ break; + case SNK_TRY_WAIT_DEBOUNCE_CHECK_VBUS: + if (port->vbus_present && tcpm_port_is_sink(port)) + tcpm_set_state(port, SNK_ATTACHED, 0); + break; case SRC_TRY_WAIT: case SRC_TRY_DEBOUNCE: /* Do nothing, waiting for sink detection */ break; + case FR_SWAP_SEND: + case FR_SWAP_SEND_TIMEOUT: + case FR_SWAP_SNK_SRC_TRANSITION_TO_OFF: + case FR_SWAP_SNK_SRC_SOURCE_VBUS_APPLIED: + if (port->tcpc->frs_sourcing_vbus) + port->tcpc->frs_sourcing_vbus(port->tcpc); + break; case FR_SWAP_SNK_SRC_NEW_SINK_READY: + if (port->tcpc->frs_sourcing_vbus) + port->tcpc->frs_sourcing_vbus(port->tcpc); tcpm_set_state(port, FR_SWAP_SNK_SRC_SOURCE_VBUS_APPLIED, 0); break; @@ -4116,16 +4213,8 @@ static void _tcpm_pd_vbus_off(struct tcpm_port *port) case SNK_HARD_RESET_SINK_OFF: tcpm_set_state(port, SNK_HARD_RESET_WAIT_VBUS, 0); break; - case SRC_HARD_RESET_VBUS_OFF: - /* - * After establishing the vSafe0V voltage condition on VBUS, the Source Shall wait - * tSrcRecover before re-applying VCONN and restoring VBUS to vSafe5V. - */ - tcpm_set_state(port, SRC_HARD_RESET_VBUS_ON, PD_T_SRC_RECOVER); - break; case HARD_RESET_SEND: break; - case SNK_TRY: /* Do nothing, waiting for timeout */ break; @@ -4156,6 +4245,14 @@ static void _tcpm_pd_vbus_off(struct tcpm_port *port) /* Do nothing, expected */ break; + case PR_SWAP_SNK_SRC_SOURCE_ON: + /* + * Do nothing when vbus off notification is received. + * TCPM can wait for PD_T_NEWSRC in PR_SWAP_SNK_SRC_SOURCE_ON + * for the vbus source to ramp up. + */ + break; + case PORT_RESET_WAIT_OFF: tcpm_set_state(port, tcpm_default_state(port), 0); break; @@ -4188,6 +4285,28 @@ static void _tcpm_pd_vbus_off(struct tcpm_port *port) } } +static void _tcpm_pd_vbus_vsafe0v(struct tcpm_port *port) +{ + tcpm_log_force(port, "VBUS VSAFE0V"); + port->vbus_vsafe0v = true; + switch (port->state) { + case SRC_HARD_RESET_VBUS_OFF: + /* + * After establishing the vSafe0V voltage condition on VBUS, the Source Shall wait + * tSrcRecover before re-applying VCONN and restoring VBUS to vSafe5V. + */ + tcpm_set_state(port, SRC_HARD_RESET_VBUS_ON, PD_T_SRC_RECOVER); + break; + case SRC_ATTACH_WAIT: + if (tcpm_port_is_source(port)) + tcpm_set_state(port, tcpm_try_snk(port) ? SNK_TRY : SRC_ATTACHED, + PD_T_CC_DEBOUNCE); + break; + default: + break; + } +} + static void _tcpm_pd_hard_reset(struct tcpm_port *port) { tcpm_log_force(port, "Received hard reset"); @@ -4223,10 +4342,19 @@ static void tcpm_pd_event_handler(struct kthread_work *work) bool vbus; vbus = port->tcpc->get_vbus(port->tcpc); - if (vbus) + if (vbus) { _tcpm_pd_vbus_on(port); - else + } else { _tcpm_pd_vbus_off(port); + /* + * When TCPC does not support detecting vsafe0v voltage level, + * treat vbus absent as vsafe0v. Else invoke is_vbus_vsafe0v + * to see if vbus has discharge to VSAFE0V. + */ + if (!port->tcpc->is_vbus_vsafe0v || + port->tcpc->is_vbus_vsafe0v(port->tcpc)) + _tcpm_pd_vbus_vsafe0v(port); + } } if (events & TCPM_CC_EVENT) { enum typec_cc_status cc1, cc2; @@ -4676,6 +4804,24 @@ static void tcpm_init(struct tcpm_port *port) if (port->vbus_present) port->vbus_never_low = true; + /* + * 1. When vbus_present is true, voltage on VBUS is already at VSAFE5V. + * So implicitly vbus_vsafe0v = false. + * + * 2. When vbus_present is false and TCPC does NOT support querying + * vsafe0v status, then, it's best to assume vbus is at VSAFE0V i.e. + * vbus_vsafe0v is true. + * + * 3. When vbus_present is false and TCPC does support querying vsafe0v, + * then, query tcpc for vsafe0v status. + */ + if (port->vbus_present) + port->vbus_vsafe0v = false; + else if (!port->tcpc->is_vbus_vsafe0v) + port->vbus_vsafe0v = true; + else + port->vbus_vsafe0v = port->tcpc->is_vbus_vsafe0v(port->tcpc); + tcpm_set_state(port, tcpm_default_state(port), 0); if (port->tcpc->get_cc(port->tcpc, &cc1, &cc2) == 0) @@ -4808,9 +4954,10 @@ sink: /* FRS can only be supported byb DRP ports */ if (port->port_type == TYPEC_PORT_DRP) { - ret = fwnode_property_read_u32(fwnode, "frs-typec-current", &frs_current); + ret = fwnode_property_read_u32(fwnode, "new-source-frs-typec-current", + &frs_current); if (ret >= 0 && frs_current <= FRS_5V_3A) - port->frs_current = frs_current; + port->new_source_frs_current = frs_current; } return 0; @@ -5024,14 +5171,14 @@ static int devm_tcpm_psy_register(struct tcpm_port *port) snprintf(psy_name, psy_name_len, "%s%s", tcpm_psy_name_prefix, port_dev_name); port->psy_desc.name = psy_name; - port->psy_desc.type = POWER_SUPPLY_TYPE_USB, + port->psy_desc.type = POWER_SUPPLY_TYPE_USB; port->psy_desc.usb_types = tcpm_psy_usb_types; port->psy_desc.num_usb_types = ARRAY_SIZE(tcpm_psy_usb_types); - port->psy_desc.properties = tcpm_psy_props, - port->psy_desc.num_properties = ARRAY_SIZE(tcpm_psy_props), - port->psy_desc.get_property = tcpm_psy_get_prop, - port->psy_desc.set_property = tcpm_psy_set_prop, - port->psy_desc.property_is_writeable = tcpm_psy_prop_writeable, + port->psy_desc.properties = tcpm_psy_props; + port->psy_desc.num_properties = ARRAY_SIZE(tcpm_psy_props); + port->psy_desc.get_property = tcpm_psy_get_prop; + port->psy_desc.set_property = tcpm_psy_set_prop; + port->psy_desc.property_is_writeable = tcpm_psy_prop_writeable; port->usb_type = POWER_SUPPLY_USB_TYPE_C; diff --git a/drivers/usb/typec/tcpm/wcove.c b/drivers/usb/typec/tcpm/wcove.c index 9b745f432c91..79ae63950050 100644 --- a/drivers/usb/typec/tcpm/wcove.c +++ b/drivers/usb/typec/tcpm/wcove.c @@ -356,7 +356,8 @@ static int wcove_set_pd_rx(struct tcpc_dev *tcpc, bool on) static int wcove_pd_transmit(struct tcpc_dev *tcpc, enum tcpm_transmit_type type, - const struct pd_message *msg) + const struct pd_message *msg, + unsigned int negotiated_rev) { struct wcove_typec *wcove = tcpc_to_wcove(tcpc); unsigned int info = 0; diff --git a/drivers/usb/typec/tps6598x.c b/drivers/usb/typec/tps6598x.c index 3db33bb622c3..6e6ef6317523 100644 --- a/drivers/usb/typec/tps6598x.c +++ b/drivers/usb/typec/tps6598x.c @@ -9,6 +9,7 @@ #include <linux/i2c.h> #include <linux/acpi.h> #include <linux/module.h> +#include <linux/power_supply.h> #include <linux/regmap.h> #include <linux/interrupt.h> #include <linux/usb/typec.h> @@ -55,6 +56,7 @@ enum { }; /* TPS_REG_POWER_STATUS bits */ +#define TPS_POWER_STATUS_CONNECTION BIT(0) #define TPS_POWER_STATUS_SOURCESINK BIT(1) #define TPS_POWER_STATUS_PWROPMODE(p) (((p) & GENMASK(3, 2)) >> 2) @@ -96,8 +98,25 @@ struct tps6598x { struct typec_partner *partner; struct usb_pd_identity partner_identity; struct usb_role_switch *role_sw; + struct typec_capability typec_cap; + + struct power_supply *psy; + struct power_supply_desc psy_desc; + enum power_supply_usb_type usb_type; +}; + +static enum power_supply_property tps6598x_psy_props[] = { + POWER_SUPPLY_PROP_USB_TYPE, + POWER_SUPPLY_PROP_ONLINE, }; +static enum power_supply_usb_type tps6598x_psy_usb_types[] = { + POWER_SUPPLY_USB_TYPE_C, + POWER_SUPPLY_USB_TYPE_PD, +}; + +static const char *tps6598x_psy_name_prefix = "tps6598x-source-psy-"; + /* * Max data bytes for Data1, Data2, and other registers. See ch 1.3.2: * https://www.ti.com/lit/ug/slvuan1a/slvuan1a.pdf @@ -248,6 +267,8 @@ static int tps6598x_connect(struct tps6598x *tps, u32 status) if (desc.identity) typec_partner_set_identity(tps->partner); + power_supply_changed(tps->psy); + return 0; } @@ -260,6 +281,7 @@ static void tps6598x_disconnect(struct tps6598x *tps, u32 status) typec_set_pwr_role(tps->port, TPS_STATUS_PORTROLE(status)); typec_set_vconn_role(tps->port, TPS_STATUS_VCONN(status)); tps6598x_set_data_role(tps, TPS_STATUS_DATAROLE(status), false); + power_supply_changed(tps->psy); } static int tps6598x_exec_cmd(struct tps6598x *tps, const char *cmd, @@ -467,6 +489,83 @@ static const struct regmap_config tps6598x_regmap_config = { .max_register = 0x7F, }; +static int tps6598x_psy_get_online(struct tps6598x *tps, + union power_supply_propval *val) +{ + int ret; + u16 pwr_status; + + ret = tps6598x_read16(tps, TPS_REG_POWER_STATUS, &pwr_status); + if (ret < 0) + return ret; + + if ((pwr_status & TPS_POWER_STATUS_CONNECTION) && + (pwr_status & TPS_POWER_STATUS_SOURCESINK)) { + val->intval = 1; + } else { + val->intval = 0; + } + return 0; +} + +static int tps6598x_psy_get_prop(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct tps6598x *tps = power_supply_get_drvdata(psy); + u16 pwr_status; + int ret = 0; + + switch (psp) { + case POWER_SUPPLY_PROP_USB_TYPE: + ret = tps6598x_read16(tps, TPS_REG_POWER_STATUS, &pwr_status); + if (ret < 0) + return ret; + if (TPS_POWER_STATUS_PWROPMODE(pwr_status) == TYPEC_PWR_MODE_PD) + val->intval = POWER_SUPPLY_USB_TYPE_PD; + else + val->intval = POWER_SUPPLY_USB_TYPE_C; + break; + case POWER_SUPPLY_PROP_ONLINE: + ret = tps6598x_psy_get_online(tps, val); + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static int devm_tps6598_psy_register(struct tps6598x *tps) +{ + struct power_supply_config psy_cfg = {}; + const char *port_dev_name = dev_name(tps->dev); + char *psy_name; + + psy_cfg.drv_data = tps; + psy_cfg.fwnode = dev_fwnode(tps->dev); + + psy_name = devm_kasprintf(tps->dev, GFP_KERNEL, "%s%s", tps6598x_psy_name_prefix, + port_dev_name); + if (!psy_name) + return -ENOMEM; + + tps->psy_desc.name = psy_name; + tps->psy_desc.type = POWER_SUPPLY_TYPE_USB; + tps->psy_desc.usb_types = tps6598x_psy_usb_types; + tps->psy_desc.num_usb_types = ARRAY_SIZE(tps6598x_psy_usb_types); + tps->psy_desc.properties = tps6598x_psy_props; + tps->psy_desc.num_properties = ARRAY_SIZE(tps6598x_psy_props); + tps->psy_desc.get_property = tps6598x_psy_get_prop; + + tps->usb_type = POWER_SUPPLY_USB_TYPE_C; + + tps->psy = devm_power_supply_register(tps->dev, &tps->psy_desc, + &psy_cfg); + return PTR_ERR_OR_ZERO(tps->psy); +} + static int tps6598x_probe(struct i2c_client *client) { struct typec_capability typec_cap = { }; @@ -560,6 +659,10 @@ static int tps6598x_probe(struct i2c_client *client) goto err_role_put; } + ret = devm_tps6598_psy_register(tps); + if (ret) + return ret; + tps->port = typec_register_port(&client->dev, &typec_cap); if (IS_ERR(tps->port)) { ret = PTR_ERR(tps->port); diff --git a/drivers/usb/typec/ucsi/psy.c b/drivers/usb/typec/ucsi/psy.c index 571a51e16234..56bf56517f75 100644 --- a/drivers/usb/typec/ucsi/psy.c +++ b/drivers/usb/typec/ucsi/psy.c @@ -220,11 +220,11 @@ int ucsi_register_port_psy(struct ucsi_connector *con) return -ENOMEM; con->psy_desc.name = psy_name; - con->psy_desc.type = POWER_SUPPLY_TYPE_USB, + con->psy_desc.type = POWER_SUPPLY_TYPE_USB; con->psy_desc.usb_types = ucsi_psy_usb_types; con->psy_desc.num_usb_types = ARRAY_SIZE(ucsi_psy_usb_types); - con->psy_desc.properties = ucsi_psy_props, - con->psy_desc.num_properties = ARRAY_SIZE(ucsi_psy_props), + con->psy_desc.properties = ucsi_psy_props; + con->psy_desc.num_properties = ARRAY_SIZE(ucsi_psy_props); con->psy_desc.get_property = ucsi_psy_get_prop; con->psy = power_supply_register(dev, &con->psy_desc, &psy_cfg); diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 51a570d40a42..f02958927cbd 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -53,7 +53,7 @@ static int ucsi_acknowledge_connector_change(struct ucsi *ucsi) ctrl = UCSI_ACK_CC_CI; ctrl |= UCSI_ACK_CONNECTOR_CHANGE; - return ucsi->ops->async_write(ucsi, UCSI_CONTROL, &ctrl, sizeof(ctrl)); + return ucsi->ops->sync_write(ucsi, UCSI_CONTROL, &ctrl, sizeof(ctrl)); } static int ucsi_exec_command(struct ucsi *ucsi, u64 command); @@ -625,21 +625,113 @@ static void ucsi_handle_connector_change(struct work_struct *work) struct ucsi_connector *con = container_of(work, struct ucsi_connector, work); struct ucsi *ucsi = con->ucsi; + struct ucsi_connector_status pre_ack_status; + struct ucsi_connector_status post_ack_status; enum typec_role role; + u16 inferred_changes; + u16 changed_flags; u64 command; int ret; mutex_lock(&con->lock); + /* + * Some/many PPMs have an issue where all fields in the change bitfield + * are cleared when an ACK is send. This will causes any change + * between GET_CONNECTOR_STATUS and ACK to be lost. + * + * We work around this by re-fetching the connector status afterwards. + * We then infer any changes that we see have happened but that may not + * be represented in the change bitfield. + * + * Also, even though we don't need to know the currently supported alt + * modes, we run the GET_CAM_SUPPORTED command to ensure the PPM does + * not get stuck in case it assumes we do. + * Always do this, rather than relying on UCSI_CONSTAT_CAM_CHANGE to be + * set in the change bitfield. + * + * We end up with the following actions: + * 1. UCSI_GET_CONNECTOR_STATUS, store result, update unprocessed_changes + * 2. UCSI_GET_CAM_SUPPORTED, discard result + * 3. ACK connector change + * 4. UCSI_GET_CONNECTOR_STATUS, store result + * 5. Infere lost changes by comparing UCSI_GET_CONNECTOR_STATUS results + * 6. If PPM reported a new change, then restart in order to ACK + * 7. Process everything as usual. + * + * We may end up seeing a change twice, but we can only miss extremely + * short transitional changes. + */ + + /* 1. First UCSI_GET_CONNECTOR_STATUS */ + command = UCSI_GET_CONNECTOR_STATUS | UCSI_CONNECTOR_NUMBER(con->num); + ret = ucsi_send_command(ucsi, command, &pre_ack_status, + sizeof(pre_ack_status)); + if (ret < 0) { + dev_err(ucsi->dev, "%s: GET_CONNECTOR_STATUS failed (%d)\n", + __func__, ret); + goto out_unlock; + } + con->unprocessed_changes |= pre_ack_status.change; + + /* 2. Run UCSI_GET_CAM_SUPPORTED and discard the result. */ + command = UCSI_GET_CAM_SUPPORTED; + command |= UCSI_CONNECTOR_NUMBER(con->num); + ucsi_send_command(con->ucsi, command, NULL, 0); + + /* 3. ACK connector change */ + clear_bit(EVENT_PENDING, &ucsi->flags); + ret = ucsi_acknowledge_connector_change(ucsi); + if (ret) { + dev_err(ucsi->dev, "%s: ACK failed (%d)", __func__, ret); + goto out_unlock; + } + + /* 4. Second UCSI_GET_CONNECTOR_STATUS */ command = UCSI_GET_CONNECTOR_STATUS | UCSI_CONNECTOR_NUMBER(con->num); - ret = ucsi_send_command(ucsi, command, &con->status, - sizeof(con->status)); + ret = ucsi_send_command(ucsi, command, &post_ack_status, + sizeof(post_ack_status)); if (ret < 0) { dev_err(ucsi->dev, "%s: GET_CONNECTOR_STATUS failed (%d)\n", __func__, ret); goto out_unlock; } + /* 5. Inferre any missing changes */ + changed_flags = pre_ack_status.flags ^ post_ack_status.flags; + inferred_changes = 0; + if (UCSI_CONSTAT_PWR_OPMODE(changed_flags) != 0) + inferred_changes |= UCSI_CONSTAT_POWER_OPMODE_CHANGE; + + if (changed_flags & UCSI_CONSTAT_CONNECTED) + inferred_changes |= UCSI_CONSTAT_CONNECT_CHANGE; + + if (changed_flags & UCSI_CONSTAT_PWR_DIR) + inferred_changes |= UCSI_CONSTAT_POWER_DIR_CHANGE; + + if (UCSI_CONSTAT_PARTNER_FLAGS(changed_flags) != 0) + inferred_changes |= UCSI_CONSTAT_PARTNER_CHANGE; + + if (UCSI_CONSTAT_PARTNER_TYPE(changed_flags) != 0) + inferred_changes |= UCSI_CONSTAT_PARTNER_CHANGE; + + /* Mask out anything that was correctly notified in the later call. */ + inferred_changes &= ~post_ack_status.change; + if (inferred_changes) + dev_dbg(ucsi->dev, "%s: Inferred changes that would have been lost: 0x%04x\n", + __func__, inferred_changes); + + con->unprocessed_changes |= inferred_changes; + + /* 6. If PPM reported a new change, then restart in order to ACK */ + if (post_ack_status.change) + goto out_unlock; + + /* 7. Continue as if nothing happened */ + con->status = post_ack_status; + con->status.change = con->unprocessed_changes; + con->unprocessed_changes = 0; + role = !!(con->status.flags & UCSI_CONSTAT_PWR_DIR); if (con->status.change & UCSI_CONSTAT_POWER_OPMODE_CHANGE || @@ -680,28 +772,19 @@ static void ucsi_handle_connector_change(struct work_struct *work) ucsi_port_psy_changed(con); } - if (con->status.change & UCSI_CONSTAT_CAM_CHANGE) { - /* - * We don't need to know the currently supported alt modes here. - * Running GET_CAM_SUPPORTED command just to make sure the PPM - * does not get stuck in case it assumes we do so. - */ - command = UCSI_GET_CAM_SUPPORTED; - command |= UCSI_CONNECTOR_NUMBER(con->num); - ucsi_send_command(con->ucsi, command, NULL, 0); - } - if (con->status.change & UCSI_CONSTAT_PARTNER_CHANGE) ucsi_partner_change(con); - ret = ucsi_acknowledge_connector_change(ucsi); - if (ret) - dev_err(ucsi->dev, "%s: ACK failed (%d)", __func__, ret); - trace_ucsi_connector_change(con->num, &con->status); out_unlock: - clear_bit(EVENT_PENDING, &ucsi->flags); + if (test_and_clear_bit(EVENT_PENDING, &ucsi->flags)) { + schedule_work(&con->work); + mutex_unlock(&con->lock); + return; + } + + clear_bit(EVENT_PROCESSING, &ucsi->flags); mutex_unlock(&con->lock); } @@ -719,7 +802,9 @@ void ucsi_connector_change(struct ucsi *ucsi, u8 num) return; } - if (!test_and_set_bit(EVENT_PENDING, &ucsi->flags)) + set_bit(EVENT_PENDING, &ucsi->flags); + + if (!test_and_set_bit(EVENT_PROCESSING, &ucsi->flags)) schedule_work(&con->work); } EXPORT_SYMBOL_GPL(ucsi_connector_change); diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h index b7a92f246050..dd9ba60ab4a3 100644 --- a/drivers/usb/typec/ucsi/ucsi.h +++ b/drivers/usb/typec/ucsi/ucsi.h @@ -296,6 +296,7 @@ struct ucsi { #define EVENT_PENDING 0 #define COMMAND_PENDING 1 #define ACK_PENDING 2 +#define EVENT_PROCESSING 3 }; #define UCSI_MAX_SVID 5 @@ -322,6 +323,7 @@ struct ucsi_connector { struct typec_capability typec_cap; + u16 unprocessed_changes; struct ucsi_connector_status status; struct ucsi_connector_capability cap; struct power_supply *psy; diff --git a/drivers/usb/typec/ucsi/ucsi_acpi.c b/drivers/usb/typec/ucsi/ucsi_acpi.c index fbfe8f5933af..04976435ad73 100644 --- a/drivers/usb/typec/ucsi/ucsi_acpi.c +++ b/drivers/usb/typec/ucsi/ucsi_acpi.c @@ -103,11 +103,12 @@ static void ucsi_acpi_notify(acpi_handle handle, u32 event, void *data) if (ret) return; + if (UCSI_CCI_CONNECTOR(cci)) + ucsi_connector_change(ua->ucsi, UCSI_CCI_CONNECTOR(cci)); + if (test_bit(COMMAND_PENDING, &ua->flags) && cci & (UCSI_CCI_ACK_COMPLETE | UCSI_CCI_COMMAND_COMPLETE)) complete(&ua->complete); - else if (UCSI_CCI_CONNECTOR(cci)) - ucsi_connector_change(ua->ucsi, UCSI_CCI_CONNECTOR(cci)); } static int ucsi_acpi_probe(struct platform_device *pdev) |