diff options
Diffstat (limited to 'drivers/usb/typec/tipd/core.c')
| -rw-r--r-- | drivers/usb/typec/tipd/core.c | 896 |
1 files changed, 896 insertions, 0 deletions
diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c new file mode 100644 index 000000000..195c9c16f --- /dev/null +++ b/drivers/usb/typec/tipd/core.c @@ -0,0 +1,896 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for TI TPS6598x USB Power Delivery controller family + * + * Copyright (C) 2017, Intel Corporation + * Author: Heikki Krogerus <heikki.krogerus@linux.intel.com> + */ + +#include <linux/i2c.h> +#include <linux/acpi.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/power_supply.h> +#include <linux/regmap.h> +#include <linux/interrupt.h> +#include <linux/usb/typec.h> +#include <linux/usb/role.h> + +#include "tps6598x.h" +#include "trace.h" + +/* Register offsets */ +#define TPS_REG_VID 0x00 +#define TPS_REG_MODE 0x03 +#define TPS_REG_CMD1 0x08 +#define TPS_REG_DATA1 0x09 +#define TPS_REG_INT_EVENT1 0x14 +#define TPS_REG_INT_EVENT2 0x15 +#define TPS_REG_INT_MASK1 0x16 +#define TPS_REG_INT_MASK2 0x17 +#define TPS_REG_INT_CLEAR1 0x18 +#define TPS_REG_INT_CLEAR2 0x19 +#define TPS_REG_SYSTEM_POWER_STATE 0x20 +#define TPS_REG_STATUS 0x1a +#define TPS_REG_SYSTEM_CONF 0x28 +#define TPS_REG_CTRL_CONF 0x29 +#define TPS_REG_POWER_STATUS 0x3f +#define TPS_REG_RX_IDENTITY_SOP 0x48 +#define TPS_REG_DATA_STATUS 0x5f + +/* TPS_REG_SYSTEM_CONF bits */ +#define TPS_SYSCONF_PORTINFO(c) ((c) & 7) + +enum { + TPS_PORTINFO_SINK, + TPS_PORTINFO_SINK_ACCESSORY, + TPS_PORTINFO_DRP_UFP, + TPS_PORTINFO_DRP_UFP_DRD, + TPS_PORTINFO_DRP_DFP, + TPS_PORTINFO_DRP_DFP_DRD, + TPS_PORTINFO_SOURCE, +}; + +/* TPS_REG_RX_IDENTITY_SOP */ +struct tps6598x_rx_identity_reg { + u8 status; + struct usb_pd_identity identity; +} __packed; + +/* Standard Task return codes */ +#define TPS_TASK_TIMEOUT 1 +#define TPS_TASK_REJECTED 3 + +enum { + TPS_MODE_APP, + TPS_MODE_BOOT, + TPS_MODE_BIST, + TPS_MODE_DISC, +}; + +static const char *const modes[] = { + [TPS_MODE_APP] = "APP ", + [TPS_MODE_BOOT] = "BOOT", + [TPS_MODE_BIST] = "BIST", + [TPS_MODE_DISC] = "DISC", +}; + +/* Unrecognized commands will be replaced with "!CMD" */ +#define INVALID_CMD(_cmd_) (_cmd_ == 0x444d4321) + +struct tps6598x { + struct device *dev; + struct regmap *regmap; + struct mutex lock; /* device lock */ + u8 i2c_protocol:1; + + struct typec_port *port; + 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; + + u16 pwr_status; +}; + +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 + */ +#define TPS_MAX_LEN 64 + +static int +tps6598x_block_read(struct tps6598x *tps, u8 reg, void *val, size_t len) +{ + u8 data[TPS_MAX_LEN + 1]; + int ret; + + if (len + 1 > sizeof(data)) + return -EINVAL; + + if (!tps->i2c_protocol) + return regmap_raw_read(tps->regmap, reg, val, len); + + ret = regmap_raw_read(tps->regmap, reg, data, len + 1); + if (ret) + return ret; + + if (data[0] < len) + return -EIO; + + memcpy(val, &data[1], len); + return 0; +} + +static int tps6598x_block_write(struct tps6598x *tps, u8 reg, + const void *val, size_t len) +{ + u8 data[TPS_MAX_LEN + 1]; + + if (len + 1 > sizeof(data)) + return -EINVAL; + + if (!tps->i2c_protocol) + return regmap_raw_write(tps->regmap, reg, val, len); + + data[0] = len; + memcpy(&data[1], val, len); + + return regmap_raw_write(tps->regmap, reg, data, len + 1); +} + +static inline int tps6598x_read8(struct tps6598x *tps, u8 reg, u8 *val) +{ + return tps6598x_block_read(tps, reg, val, sizeof(u8)); +} + +static inline int tps6598x_read16(struct tps6598x *tps, u8 reg, u16 *val) +{ + return tps6598x_block_read(tps, reg, val, sizeof(u16)); +} + +static inline int tps6598x_read32(struct tps6598x *tps, u8 reg, u32 *val) +{ + return tps6598x_block_read(tps, reg, val, sizeof(u32)); +} + +static inline int tps6598x_read64(struct tps6598x *tps, u8 reg, u64 *val) +{ + return tps6598x_block_read(tps, reg, val, sizeof(u64)); +} + +static inline int tps6598x_write16(struct tps6598x *tps, u8 reg, u16 val) +{ + return tps6598x_block_write(tps, reg, &val, sizeof(u16)); +} + +static inline int tps6598x_write32(struct tps6598x *tps, u8 reg, u32 val) +{ + return tps6598x_block_write(tps, reg, &val, sizeof(u32)); +} + +static inline int tps6598x_write64(struct tps6598x *tps, u8 reg, u64 val) +{ + return tps6598x_block_write(tps, reg, &val, sizeof(u64)); +} + +static inline int +tps6598x_write_4cc(struct tps6598x *tps, u8 reg, const char *val) +{ + return tps6598x_block_write(tps, reg, val, 4); +} + +static int tps6598x_read_partner_identity(struct tps6598x *tps) +{ + struct tps6598x_rx_identity_reg id; + int ret; + + ret = tps6598x_block_read(tps, TPS_REG_RX_IDENTITY_SOP, + &id, sizeof(id)); + if (ret) + return ret; + + tps->partner_identity = id.identity; + + return 0; +} + +static void tps6598x_set_data_role(struct tps6598x *tps, + enum typec_data_role role, bool connected) +{ + enum usb_role role_val; + + if (role == TYPEC_HOST) + role_val = USB_ROLE_HOST; + else + role_val = USB_ROLE_DEVICE; + + if (!connected) + role_val = USB_ROLE_NONE; + + usb_role_switch_set_role(tps->role_sw, role_val); + typec_set_data_role(tps->port, role); +} + +static int tps6598x_connect(struct tps6598x *tps, u32 status) +{ + struct typec_partner_desc desc; + enum typec_pwr_opmode mode; + int ret; + + if (tps->partner) + return 0; + + mode = TPS_POWER_STATUS_PWROPMODE(tps->pwr_status); + + desc.usb_pd = mode == TYPEC_PWR_MODE_PD; + desc.accessory = TYPEC_ACCESSORY_NONE; /* XXX: handle accessories */ + desc.identity = NULL; + + if (desc.usb_pd) { + ret = tps6598x_read_partner_identity(tps); + if (ret) + return ret; + desc.identity = &tps->partner_identity; + } + + typec_set_pwr_opmode(tps->port, mode); + typec_set_pwr_role(tps->port, TPS_STATUS_TO_TYPEC_PORTROLE(status)); + typec_set_vconn_role(tps->port, TPS_STATUS_TO_TYPEC_VCONN(status)); + if (TPS_STATUS_TO_UPSIDE_DOWN(status)) + typec_set_orientation(tps->port, TYPEC_ORIENTATION_REVERSE); + else + typec_set_orientation(tps->port, TYPEC_ORIENTATION_NORMAL); + tps6598x_set_data_role(tps, TPS_STATUS_TO_TYPEC_DATAROLE(status), true); + + tps->partner = typec_register_partner(tps->port, &desc); + if (IS_ERR(tps->partner)) + return PTR_ERR(tps->partner); + + if (desc.identity) + typec_partner_set_identity(tps->partner); + + power_supply_changed(tps->psy); + + return 0; +} + +static void tps6598x_disconnect(struct tps6598x *tps, u32 status) +{ + if (!IS_ERR(tps->partner)) + typec_unregister_partner(tps->partner); + tps->partner = NULL; + typec_set_pwr_opmode(tps->port, TYPEC_PWR_MODE_USB); + typec_set_pwr_role(tps->port, TPS_STATUS_TO_TYPEC_PORTROLE(status)); + typec_set_vconn_role(tps->port, TPS_STATUS_TO_TYPEC_VCONN(status)); + typec_set_orientation(tps->port, TYPEC_ORIENTATION_NONE); + tps6598x_set_data_role(tps, TPS_STATUS_TO_TYPEC_DATAROLE(status), false); + + power_supply_changed(tps->psy); +} + +static int tps6598x_exec_cmd(struct tps6598x *tps, const char *cmd, + size_t in_len, u8 *in_data, + size_t out_len, u8 *out_data) +{ + unsigned long timeout; + u32 val; + int ret; + + ret = tps6598x_read32(tps, TPS_REG_CMD1, &val); + if (ret) + return ret; + if (val && !INVALID_CMD(val)) + return -EBUSY; + + if (in_len) { + ret = tps6598x_block_write(tps, TPS_REG_DATA1, + in_data, in_len); + if (ret) + return ret; + } + + ret = tps6598x_write_4cc(tps, TPS_REG_CMD1, cmd); + if (ret < 0) + return ret; + + /* XXX: Using 1s for now, but it may not be enough for every command. */ + timeout = jiffies + msecs_to_jiffies(1000); + + do { + ret = tps6598x_read32(tps, TPS_REG_CMD1, &val); + if (ret) + return ret; + if (INVALID_CMD(val)) + return -EINVAL; + + if (time_is_before_jiffies(timeout)) + return -ETIMEDOUT; + } while (val); + + if (out_len) { + ret = tps6598x_block_read(tps, TPS_REG_DATA1, + out_data, out_len); + if (ret) + return ret; + val = out_data[0]; + } else { + ret = tps6598x_block_read(tps, TPS_REG_DATA1, &val, sizeof(u8)); + if (ret) + return ret; + } + + switch (val) { + case TPS_TASK_TIMEOUT: + return -ETIMEDOUT; + case TPS_TASK_REJECTED: + return -EPERM; + default: + break; + } + + return 0; +} + +static int tps6598x_dr_set(struct typec_port *port, enum typec_data_role role) +{ + const char *cmd = (role == TYPEC_DEVICE) ? "SWUF" : "SWDF"; + struct tps6598x *tps = typec_get_drvdata(port); + u32 status; + int ret; + + mutex_lock(&tps->lock); + + ret = tps6598x_exec_cmd(tps, cmd, 0, NULL, 0, NULL); + if (ret) + goto out_unlock; + + ret = tps6598x_read32(tps, TPS_REG_STATUS, &status); + if (ret) + goto out_unlock; + + if (role != TPS_STATUS_TO_TYPEC_DATAROLE(status)) { + ret = -EPROTO; + goto out_unlock; + } + + tps6598x_set_data_role(tps, role, true); + +out_unlock: + mutex_unlock(&tps->lock); + + return ret; +} + +static int tps6598x_pr_set(struct typec_port *port, enum typec_role role) +{ + const char *cmd = (role == TYPEC_SINK) ? "SWSk" : "SWSr"; + struct tps6598x *tps = typec_get_drvdata(port); + u32 status; + int ret; + + mutex_lock(&tps->lock); + + ret = tps6598x_exec_cmd(tps, cmd, 0, NULL, 0, NULL); + if (ret) + goto out_unlock; + + ret = tps6598x_read32(tps, TPS_REG_STATUS, &status); + if (ret) + goto out_unlock; + + if (role != TPS_STATUS_TO_TYPEC_PORTROLE(status)) { + ret = -EPROTO; + goto out_unlock; + } + + typec_set_pwr_role(tps->port, role); + +out_unlock: + mutex_unlock(&tps->lock); + + return ret; +} + +static const struct typec_operations tps6598x_ops = { + .dr_set = tps6598x_dr_set, + .pr_set = tps6598x_pr_set, +}; + +static bool tps6598x_read_status(struct tps6598x *tps, u32 *status) +{ + int ret; + + ret = tps6598x_read32(tps, TPS_REG_STATUS, status); + if (ret) { + dev_err(tps->dev, "%s: failed to read status\n", __func__); + return false; + } + trace_tps6598x_status(*status); + + return true; +} + +static bool tps6598x_read_data_status(struct tps6598x *tps) +{ + u32 data_status; + int ret; + + ret = tps6598x_read32(tps, TPS_REG_DATA_STATUS, &data_status); + if (ret < 0) { + dev_err(tps->dev, "failed to read data status: %d\n", ret); + return false; + } + trace_tps6598x_data_status(data_status); + + return true; +} + +static bool tps6598x_read_power_status(struct tps6598x *tps) +{ + u16 pwr_status; + int ret; + + ret = tps6598x_read16(tps, TPS_REG_POWER_STATUS, &pwr_status); + if (ret < 0) { + dev_err(tps->dev, "failed to read power status: %d\n", ret); + return false; + } + tps->pwr_status = pwr_status; + trace_tps6598x_power_status(pwr_status); + + return true; +} + +static void tps6598x_handle_plug_event(struct tps6598x *tps, u32 status) +{ + int ret; + + if (status & TPS_STATUS_PLUG_PRESENT) { + ret = tps6598x_connect(tps, status); + if (ret) + dev_err(tps->dev, "failed to register partner\n"); + } else { + tps6598x_disconnect(tps, status); + } +} + +static irqreturn_t cd321x_interrupt(int irq, void *data) +{ + struct tps6598x *tps = data; + u64 event = 0; + u32 status; + int ret; + + mutex_lock(&tps->lock); + + ret = tps6598x_read64(tps, TPS_REG_INT_EVENT1, &event); + if (ret) { + dev_err(tps->dev, "%s: failed to read events\n", __func__); + goto err_unlock; + } + trace_cd321x_irq(event); + + if (!event) + goto err_unlock; + + if (!tps6598x_read_status(tps, &status)) + goto err_clear_ints; + + if (event & APPLE_CD_REG_INT_POWER_STATUS_UPDATE) + if (!tps6598x_read_power_status(tps)) + goto err_clear_ints; + + if (event & APPLE_CD_REG_INT_DATA_STATUS_UPDATE) + if (!tps6598x_read_data_status(tps)) + goto err_clear_ints; + + /* Handle plug insert or removal */ + if (event & APPLE_CD_REG_INT_PLUG_EVENT) + tps6598x_handle_plug_event(tps, status); + +err_clear_ints: + tps6598x_write64(tps, TPS_REG_INT_CLEAR1, event); + +err_unlock: + mutex_unlock(&tps->lock); + + if (event) + return IRQ_HANDLED; + return IRQ_NONE; +} + +static irqreturn_t tps6598x_interrupt(int irq, void *data) +{ + struct tps6598x *tps = data; + u64 event1 = 0; + u64 event2 = 0; + u32 status; + int ret; + + mutex_lock(&tps->lock); + + ret = tps6598x_read64(tps, TPS_REG_INT_EVENT1, &event1); + ret |= tps6598x_read64(tps, TPS_REG_INT_EVENT2, &event2); + if (ret) { + dev_err(tps->dev, "%s: failed to read events\n", __func__); + goto err_unlock; + } + trace_tps6598x_irq(event1, event2); + + if (!(event1 | event2)) + goto err_unlock; + + if (!tps6598x_read_status(tps, &status)) + goto err_clear_ints; + + if ((event1 | event2) & TPS_REG_INT_POWER_STATUS_UPDATE) + if (!tps6598x_read_power_status(tps)) + goto err_clear_ints; + + if ((event1 | event2) & TPS_REG_INT_DATA_STATUS_UPDATE) + if (!tps6598x_read_data_status(tps)) + goto err_clear_ints; + + /* Handle plug insert or removal */ + if ((event1 | event2) & TPS_REG_INT_PLUG_EVENT) + tps6598x_handle_plug_event(tps, status); + +err_clear_ints: + tps6598x_write64(tps, TPS_REG_INT_CLEAR1, event1); + tps6598x_write64(tps, TPS_REG_INT_CLEAR2, event2); + +err_unlock: + mutex_unlock(&tps->lock); + + if (event1 | event2) + return IRQ_HANDLED; + return IRQ_NONE; +} + +static int tps6598x_check_mode(struct tps6598x *tps) +{ + char mode[5] = { }; + int ret; + + ret = tps6598x_read32(tps, TPS_REG_MODE, (void *)mode); + if (ret) + return ret; + + switch (match_string(modes, ARRAY_SIZE(modes), mode)) { + case TPS_MODE_APP: + return 0; + case TPS_MODE_BOOT: + dev_warn(tps->dev, "dead-battery condition\n"); + return 0; + case TPS_MODE_BIST: + case TPS_MODE_DISC: + default: + dev_err(tps->dev, "controller in unsupported mode \"%s\"\n", + mode); + break; + } + + return -ENODEV; +} + +static const struct regmap_config tps6598x_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0x7F, +}; + +static int tps6598x_psy_get_online(struct tps6598x *tps, + union power_supply_propval *val) +{ + if (TPS_POWER_STATUS_CONNECTION(tps->pwr_status) && + TPS_POWER_STATUS_SOURCESINK(tps->pwr_status)) { + 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); + int ret = 0; + + switch (psp) { + case POWER_SUPPLY_PROP_USB_TYPE: + if (TPS_POWER_STATUS_PWROPMODE(tps->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 cd321x_switch_power_state(struct tps6598x *tps, u8 target_state) +{ + u8 state; + int ret; + + ret = tps6598x_read8(tps, TPS_REG_SYSTEM_POWER_STATE, &state); + if (ret) + return ret; + + if (state == target_state) + return 0; + + ret = tps6598x_exec_cmd(tps, "SSPS", sizeof(u8), &target_state, 0, NULL); + if (ret) + return ret; + + ret = tps6598x_read8(tps, TPS_REG_SYSTEM_POWER_STATE, &state); + if (ret) + return ret; + + if (state != target_state) + return -EINVAL; + + return 0; +} + +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) +{ + irq_handler_t irq_handler = tps6598x_interrupt; + struct device_node *np = client->dev.of_node; + struct typec_capability typec_cap = { }; + struct tps6598x *tps; + struct fwnode_handle *fwnode; + u32 status; + u32 conf; + u32 vid; + int ret; + u64 mask1; + + tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL); + if (!tps) + return -ENOMEM; + + mutex_init(&tps->lock); + tps->dev = &client->dev; + + tps->regmap = devm_regmap_init_i2c(client, &tps6598x_regmap_config); + if (IS_ERR(tps->regmap)) + return PTR_ERR(tps->regmap); + + ret = tps6598x_read32(tps, TPS_REG_VID, &vid); + if (ret < 0 || !vid) + return -ENODEV; + + /* + * Checking can the adapter handle SMBus protocol. If it can not, the + * driver needs to take care of block reads separately. + */ + if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) + tps->i2c_protocol = true; + + if (np && of_device_is_compatible(np, "apple,cd321x")) { + /* Switch CD321X chips to the correct system power state */ + ret = cd321x_switch_power_state(tps, TPS_SYSTEM_POWER_STATE_S0); + if (ret) + return ret; + + /* CD321X chips have all interrupts masked initially */ + mask1 = APPLE_CD_REG_INT_POWER_STATUS_UPDATE | + APPLE_CD_REG_INT_DATA_STATUS_UPDATE | + APPLE_CD_REG_INT_PLUG_EVENT; + + irq_handler = cd321x_interrupt; + } else { + /* Enable power status, data status and plug event interrupts */ + mask1 = TPS_REG_INT_POWER_STATUS_UPDATE | + TPS_REG_INT_DATA_STATUS_UPDATE | + TPS_REG_INT_PLUG_EVENT; + } + + /* Make sure the controller has application firmware running */ + ret = tps6598x_check_mode(tps); + if (ret) + return ret; + + ret = tps6598x_write64(tps, TPS_REG_INT_MASK1, mask1); + if (ret) + return ret; + + ret = tps6598x_read32(tps, TPS_REG_STATUS, &status); + if (ret < 0) + goto err_clear_mask; + trace_tps6598x_status(status); + + ret = tps6598x_read32(tps, TPS_REG_SYSTEM_CONF, &conf); + if (ret < 0) + goto err_clear_mask; + + /* + * This fwnode has a "compatible" property, but is never populated as a + * struct device. Instead we simply parse it to read the properties. + * This breaks fw_devlink=on. To maintain backward compatibility + * with existing DT files, we work around this by deleting any + * fwnode_links to/from this fwnode. + */ + fwnode = device_get_named_child_node(&client->dev, "connector"); + if (fwnode) + fw_devlink_purge_absent_suppliers(fwnode); + + tps->role_sw = fwnode_usb_role_switch_get(fwnode); + if (IS_ERR(tps->role_sw)) { + ret = PTR_ERR(tps->role_sw); + goto err_fwnode_put; + } + + typec_cap.revision = USB_TYPEC_REV_1_2; + typec_cap.pd_revision = 0x200; + typec_cap.prefer_role = TYPEC_NO_PREFERRED_ROLE; + typec_cap.driver_data = tps; + typec_cap.ops = &tps6598x_ops; + typec_cap.fwnode = fwnode; + + switch (TPS_SYSCONF_PORTINFO(conf)) { + case TPS_PORTINFO_SINK_ACCESSORY: + case TPS_PORTINFO_SINK: + typec_cap.type = TYPEC_PORT_SNK; + typec_cap.data = TYPEC_PORT_UFP; + break; + case TPS_PORTINFO_DRP_UFP_DRD: + case TPS_PORTINFO_DRP_DFP_DRD: + typec_cap.type = TYPEC_PORT_DRP; + typec_cap.data = TYPEC_PORT_DRD; + break; + case TPS_PORTINFO_DRP_UFP: + typec_cap.type = TYPEC_PORT_DRP; + typec_cap.data = TYPEC_PORT_UFP; + break; + case TPS_PORTINFO_DRP_DFP: + typec_cap.type = TYPEC_PORT_DRP; + typec_cap.data = TYPEC_PORT_DFP; + break; + case TPS_PORTINFO_SOURCE: + typec_cap.type = TYPEC_PORT_SRC; + typec_cap.data = TYPEC_PORT_DFP; + break; + default: + ret = -ENODEV; + goto err_role_put; + } + + ret = devm_tps6598_psy_register(tps); + if (ret) + goto err_role_put; + + tps->port = typec_register_port(&client->dev, &typec_cap); + if (IS_ERR(tps->port)) { + ret = PTR_ERR(tps->port); + goto err_role_put; + } + + if (status & TPS_STATUS_PLUG_PRESENT) { + ret = tps6598x_read16(tps, TPS_REG_POWER_STATUS, &tps->pwr_status); + if (ret < 0) { + dev_err(tps->dev, "failed to read power status: %d\n", ret); + goto err_unregister_port; + } + ret = tps6598x_connect(tps, status); + if (ret) + dev_err(&client->dev, "failed to register partner\n"); + } + + ret = devm_request_threaded_irq(&client->dev, client->irq, NULL, + irq_handler, + IRQF_SHARED | IRQF_ONESHOT, + dev_name(&client->dev), tps); + if (ret) { + tps6598x_disconnect(tps, 0); + goto err_unregister_port; + } + + i2c_set_clientdata(client, tps); + fwnode_handle_put(fwnode); + + return 0; + +err_unregister_port: + typec_unregister_port(tps->port); +err_role_put: + usb_role_switch_put(tps->role_sw); +err_fwnode_put: + fwnode_handle_put(fwnode); +err_clear_mask: + tps6598x_write64(tps, TPS_REG_INT_MASK1, 0); + return ret; +} + +static void tps6598x_remove(struct i2c_client *client) +{ + struct tps6598x *tps = i2c_get_clientdata(client); + + tps6598x_disconnect(tps, 0); + typec_unregister_port(tps->port); + usb_role_switch_put(tps->role_sw); +} + +static const struct of_device_id tps6598x_of_match[] = { + { .compatible = "ti,tps6598x", }, + { .compatible = "apple,cd321x", }, + {} +}; +MODULE_DEVICE_TABLE(of, tps6598x_of_match); + +static const struct i2c_device_id tps6598x_id[] = { + { "tps6598x" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, tps6598x_id); + +static struct i2c_driver tps6598x_i2c_driver = { + .driver = { + .name = "tps6598x", + .of_match_table = tps6598x_of_match, + }, + .probe_new = tps6598x_probe, + .remove = tps6598x_remove, + .id_table = tps6598x_id, +}; +module_i2c_driver(tps6598x_i2c_driver); + +MODULE_AUTHOR("Heikki Krogerus <heikki.krogerus@linux.intel.com>"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("TI TPS6598x USB Power Delivery Controller Driver"); |