Lines Matching refs:adap
156 static int get_scl_gpio_value(struct i2c_adapter *adap) in get_scl_gpio_value() argument
158 return gpiod_get_value_cansleep(adap->bus_recovery_info->scl_gpiod); in get_scl_gpio_value()
161 static void set_scl_gpio_value(struct i2c_adapter *adap, int val) in set_scl_gpio_value() argument
163 gpiod_set_value_cansleep(adap->bus_recovery_info->scl_gpiod, val); in set_scl_gpio_value()
166 static int get_sda_gpio_value(struct i2c_adapter *adap) in get_sda_gpio_value() argument
168 return gpiod_get_value_cansleep(adap->bus_recovery_info->sda_gpiod); in get_sda_gpio_value()
171 static void set_sda_gpio_value(struct i2c_adapter *adap, int val) in set_sda_gpio_value() argument
173 gpiod_set_value_cansleep(adap->bus_recovery_info->sda_gpiod, val); in set_sda_gpio_value()
176 static int i2c_generic_bus_free(struct i2c_adapter *adap) in i2c_generic_bus_free() argument
178 struct i2c_bus_recovery_info *bri = adap->bus_recovery_info; in i2c_generic_bus_free()
182 ret = bri->get_bus_free(adap); in i2c_generic_bus_free()
184 ret = bri->get_sda(adap); in i2c_generic_bus_free()
200 int i2c_generic_scl_recovery(struct i2c_adapter *adap) in i2c_generic_scl_recovery() argument
202 struct i2c_bus_recovery_info *bri = adap->bus_recovery_info; in i2c_generic_scl_recovery()
206 bri->prepare_recovery(adap); in i2c_generic_scl_recovery()
217 bri->set_scl(adap, scl); in i2c_generic_scl_recovery()
220 bri->set_sda(adap, scl); in i2c_generic_scl_recovery()
229 if (!bri->get_scl(adap)) { in i2c_generic_scl_recovery()
230 dev_err(&adap->dev, in i2c_generic_scl_recovery()
238 bri->set_scl(adap, scl); in i2c_generic_scl_recovery()
248 bri->set_sda(adap, scl); in i2c_generic_scl_recovery()
252 ret = i2c_generic_bus_free(adap); in i2c_generic_scl_recovery()
263 bri->unprepare_recovery(adap); in i2c_generic_scl_recovery()
271 int i2c_recover_bus(struct i2c_adapter *adap) in i2c_recover_bus() argument
273 if (!adap->bus_recovery_info) in i2c_recover_bus()
276 dev_dbg(&adap->dev, "Trying i2c bus recovery\n"); in i2c_recover_bus()
277 return adap->bus_recovery_info->recover_bus(adap); in i2c_recover_bus()
281 static void i2c_gpio_init_pinctrl_recovery(struct i2c_adapter *adap) in i2c_gpio_init_pinctrl_recovery() argument
283 struct i2c_bus_recovery_info *bri = adap->bus_recovery_info; in i2c_gpio_init_pinctrl_recovery()
284 struct device *dev = &adap->dev; in i2c_gpio_init_pinctrl_recovery()
326 static int i2c_gpio_init_generic_recovery(struct i2c_adapter *adap) in i2c_gpio_init_generic_recovery() argument
328 struct i2c_bus_recovery_info *bri = adap->bus_recovery_info; in i2c_gpio_init_generic_recovery()
329 struct device *dev = &adap->dev; in i2c_gpio_init_generic_recovery()
394 static int i2c_gpio_init_recovery(struct i2c_adapter *adap) in i2c_gpio_init_recovery() argument
396 i2c_gpio_init_pinctrl_recovery(adap); in i2c_gpio_init_recovery()
397 return i2c_gpio_init_generic_recovery(adap); in i2c_gpio_init_recovery()
400 static int i2c_init_recovery(struct i2c_adapter *adap) in i2c_init_recovery() argument
402 struct i2c_bus_recovery_info *bri = adap->bus_recovery_info; in i2c_init_recovery()
409 if (i2c_gpio_init_recovery(adap) == -EPROBE_DEFER) in i2c_init_recovery()
442 dev_err(&adap->dev, "Not using recovery: %s\n", err_str); in i2c_init_recovery()
444 dev_dbg(&adap->dev, "Not using recovery: %s\n", err_str); in i2c_init_recovery()
445 adap->bus_recovery_info = NULL; in i2c_init_recovery()
452 struct i2c_adapter *adap = client->adapter; in i2c_smbus_host_notify_to_irq() local
455 if (!adap->host_notify_domain) in i2c_smbus_host_notify_to_irq()
461 irq = irq_create_mapping(adap->host_notify_domain, client->addr); in i2c_smbus_host_notify_to_irq()
853 static void i2c_dev_set_name(struct i2c_adapter *adap, in i2c_dev_set_name() argument
869 dev_set_name(&client->dev, "%d-%04x", i2c_adapter_id(adap), in i2c_dev_set_name()
916 i2c_new_client_device(struct i2c_adapter *adap, struct i2c_board_info const *info) in i2c_new_client_device() argument
925 client->adapter = adap; in i2c_new_client_device()
940 dev_err(&adap->dev, "Invalid %d-bit I2C address 0x%02hx\n", in i2c_new_client_device()
946 status = i2c_check_addr_busy(adap, i2c_encode_flags_to_addr(client)); in i2c_new_client_device()
956 i2c_dev_set_name(adap, client, info); in i2c_new_client_device()
961 dev_err(&adap->dev, in i2c_new_client_device()
972 dev_dbg(&adap->dev, "client [%s] registered with bus id %s\n", in i2c_new_client_device()
982 dev_err(&adap->dev, in i2c_new_client_device()
1146 struct i2c_adapter *adap = to_i2c_adapter(dev); in i2c_adapter_dev_release() local
1147 complete(&adap->dev_released); in i2c_adapter_dev_release()
1178 struct i2c_adapter *adap = to_i2c_adapter(dev); in new_device_store() local
1218 client = i2c_new_client_device(adap, &info); in new_device_store()
1223 mutex_lock(&adap->userspace_clients_lock); in new_device_store()
1224 list_add_tail(&client->detected, &adap->userspace_clients); in new_device_store()
1225 mutex_unlock(&adap->userspace_clients_lock); in new_device_store()
1246 struct i2c_adapter *adap = to_i2c_adapter(dev); in delete_device_store() local
1265 mutex_lock_nested(&adap->userspace_clients_lock, in delete_device_store()
1266 i2c_adapter_depth(adap)); in delete_device_store()
1267 list_for_each_entry_safe(client, next, &adap->userspace_clients, in delete_device_store()
1279 mutex_unlock(&adap->userspace_clients_lock); in delete_device_store()
1340 struct i2c_adapter *adap) in i2c_do_add_adapter() argument
1343 i2c_detect(adap, driver); in i2c_do_add_adapter()
1359 static void i2c_host_notify_irq_teardown(struct i2c_adapter *adap) in i2c_host_notify_irq_teardown() argument
1361 struct irq_domain *domain = adap->host_notify_domain; in i2c_host_notify_irq_teardown()
1371 adap->host_notify_domain = NULL; in i2c_host_notify_irq_teardown()
1387 static int i2c_setup_host_notify_irq_domain(struct i2c_adapter *adap) in i2c_setup_host_notify_irq_domain() argument
1391 if (!i2c_check_functionality(adap, I2C_FUNC_SMBUS_HOST_NOTIFY)) in i2c_setup_host_notify_irq_domain()
1394 domain = irq_domain_create_linear(adap->dev.parent->fwnode, in i2c_setup_host_notify_irq_domain()
1396 &i2c_host_notify_irq_ops, adap); in i2c_setup_host_notify_irq_domain()
1400 adap->host_notify_domain = domain; in i2c_setup_host_notify_irq_domain()
1415 int i2c_handle_smbus_host_notify(struct i2c_adapter *adap, unsigned short addr) in i2c_handle_smbus_host_notify() argument
1419 if (!adap) in i2c_handle_smbus_host_notify()
1422 irq = irq_find_mapping(adap->host_notify_domain, addr); in i2c_handle_smbus_host_notify()
1432 static int i2c_register_adapter(struct i2c_adapter *adap) in i2c_register_adapter() argument
1443 if (WARN(!adap->name[0], "i2c adapter has no name")) in i2c_register_adapter()
1446 if (!adap->algo) { in i2c_register_adapter()
1447 pr_err("adapter '%s': no algo supplied!\n", adap->name); in i2c_register_adapter()
1451 if (!adap->lock_ops) in i2c_register_adapter()
1452 adap->lock_ops = &i2c_adapter_lock_ops; in i2c_register_adapter()
1454 adap->locked_flags = 0; in i2c_register_adapter()
1455 rt_mutex_init(&adap->bus_lock); in i2c_register_adapter()
1456 rt_mutex_init(&adap->mux_lock); in i2c_register_adapter()
1457 mutex_init(&adap->userspace_clients_lock); in i2c_register_adapter()
1458 INIT_LIST_HEAD(&adap->userspace_clients); in i2c_register_adapter()
1461 if (adap->timeout == 0) in i2c_register_adapter()
1462 adap->timeout = HZ; in i2c_register_adapter()
1465 res = i2c_setup_host_notify_irq_domain(adap); in i2c_register_adapter()
1468 adap->name, res); in i2c_register_adapter()
1472 dev_set_name(&adap->dev, "i2c-%d", adap->nr); in i2c_register_adapter()
1473 adap->dev.bus = &i2c_bus_type; in i2c_register_adapter()
1474 adap->dev.type = &i2c_adapter_type; in i2c_register_adapter()
1475 res = device_register(&adap->dev); in i2c_register_adapter()
1477 pr_err("adapter '%s': can't register device (%d)\n", adap->name, res); in i2c_register_adapter()
1481 res = of_i2c_setup_smbus_alert(adap); in i2c_register_adapter()
1485 pm_runtime_no_callbacks(&adap->dev); in i2c_register_adapter()
1486 pm_suspend_ignore_children(&adap->dev, true); in i2c_register_adapter()
1487 pm_runtime_enable(&adap->dev); in i2c_register_adapter()
1489 res = i2c_init_recovery(adap); in i2c_register_adapter()
1493 dev_dbg(&adap->dev, "adapter [%s] registered\n", adap->name); in i2c_register_adapter()
1496 res = class_compat_create_link(i2c_adapter_compat_class, &adap->dev, in i2c_register_adapter()
1497 adap->dev.parent); in i2c_register_adapter()
1499 dev_warn(&adap->dev, in i2c_register_adapter()
1504 of_i2c_register_devices(adap); in i2c_register_adapter()
1505 i2c_acpi_install_space_handler(adap); in i2c_register_adapter()
1506 i2c_acpi_register_devices(adap); in i2c_register_adapter()
1508 if (adap->nr < __i2c_first_dynamic_bus_num) in i2c_register_adapter()
1509 i2c_scan_static_board_info(adap); in i2c_register_adapter()
1513 bus_for_each_drv(&i2c_bus_type, NULL, adap, __process_new_adapter); in i2c_register_adapter()
1519 init_completion(&adap->dev_released); in i2c_register_adapter()
1520 device_unregister(&adap->dev); in i2c_register_adapter()
1521 wait_for_completion(&adap->dev_released); in i2c_register_adapter()
1524 idr_remove(&i2c_adapter_idr, adap->nr); in i2c_register_adapter()
1536 static int __i2c_add_numbered_adapter(struct i2c_adapter *adap) in __i2c_add_numbered_adapter() argument
1541 id = idr_alloc(&i2c_adapter_idr, adap, adap->nr, adap->nr + 1, GFP_KERNEL); in __i2c_add_numbered_adapter()
1546 return i2c_register_adapter(adap); in __i2c_add_numbered_adapter()
1612 int i2c_add_numbered_adapter(struct i2c_adapter *adap) in i2c_add_numbered_adapter() argument
1614 if (adap->nr == -1) /* -1 means dynamically assign bus id */ in i2c_add_numbered_adapter()
1615 return i2c_add_adapter(adap); in i2c_add_numbered_adapter()
1617 return __i2c_add_numbered_adapter(adap); in i2c_add_numbered_adapter()
1667 void i2c_del_adapter(struct i2c_adapter *adap) in i2c_del_adapter() argument
1674 found = idr_find(&i2c_adapter_idr, adap->nr); in i2c_del_adapter()
1676 if (found != adap) { in i2c_del_adapter()
1677 pr_debug("attempting to delete unregistered adapter [%s]\n", adap->name); in i2c_del_adapter()
1681 i2c_acpi_remove_space_handler(adap); in i2c_del_adapter()
1684 bus_for_each_drv(&i2c_bus_type, NULL, adap, in i2c_del_adapter()
1689 mutex_lock_nested(&adap->userspace_clients_lock, in i2c_del_adapter()
1690 i2c_adapter_depth(adap)); in i2c_del_adapter()
1691 list_for_each_entry_safe(client, next, &adap->userspace_clients, in i2c_del_adapter()
1693 dev_dbg(&adap->dev, "Removing %s at 0x%x\n", client->name, in i2c_del_adapter()
1698 mutex_unlock(&adap->userspace_clients_lock); in i2c_del_adapter()
1705 device_for_each_child(&adap->dev, NULL, __unregister_client); in i2c_del_adapter()
1706 device_for_each_child(&adap->dev, NULL, __unregister_dummy); in i2c_del_adapter()
1709 class_compat_remove_link(i2c_adapter_compat_class, &adap->dev, in i2c_del_adapter()
1710 adap->dev.parent); in i2c_del_adapter()
1714 dev_dbg(&adap->dev, "adapter [%s] unregistered\n", adap->name); in i2c_del_adapter()
1716 pm_runtime_disable(&adap->dev); in i2c_del_adapter()
1718 i2c_host_notify_irq_teardown(adap); in i2c_del_adapter()
1727 init_completion(&adap->dev_released); in i2c_del_adapter()
1728 device_unregister(&adap->dev); in i2c_del_adapter()
1729 wait_for_completion(&adap->dev_released); in i2c_del_adapter()
1733 idr_remove(&i2c_adapter_idr, adap->nr); in i2c_del_adapter()
1738 memset(&adap->dev, 0, sizeof(adap->dev)); in i2c_del_adapter()
1921 void i2c_clients_command(struct i2c_adapter *adap, unsigned int cmd, void *arg) in i2c_clients_command() argument
1927 device_for_each_child(&adap->dev, &cmd_arg, i2c_cmd); in i2c_clients_command()
2004 static int i2c_quirk_error(struct i2c_adapter *adap, struct i2c_msg *msg, char *err_msg) in i2c_quirk_error() argument
2006 dev_err_ratelimited(&adap->dev, "adapter quirk: %s (addr 0x%04x, size %u, %s)\n", in i2c_quirk_error()
2012 static int i2c_check_for_quirks(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) in i2c_check_for_quirks() argument
2014 const struct i2c_adapter_quirks *q = adap->quirks; in i2c_check_for_quirks()
2024 return i2c_quirk_error(adap, &msgs[0], "1st comb msg must be write"); in i2c_check_for_quirks()
2027 return i2c_quirk_error(adap, &msgs[1], "2nd comb msg must be read"); in i2c_check_for_quirks()
2030 return i2c_quirk_error(adap, &msgs[0], "comb msg only to same addr"); in i2c_check_for_quirks()
2033 return i2c_quirk_error(adap, &msgs[0], "msg too long"); in i2c_check_for_quirks()
2036 return i2c_quirk_error(adap, &msgs[1], "msg too long"); in i2c_check_for_quirks()
2043 return i2c_quirk_error(adap, &msgs[0], "too many messages"); in i2c_check_for_quirks()
2050 return i2c_quirk_error(adap, &msgs[i], "msg too long"); in i2c_check_for_quirks()
2053 return i2c_quirk_error(adap, &msgs[i], "no zero length"); in i2c_check_for_quirks()
2056 return i2c_quirk_error(adap, &msgs[i], "msg too long"); in i2c_check_for_quirks()
2059 return i2c_quirk_error(adap, &msgs[i], "no zero length"); in i2c_check_for_quirks()
2078 int __i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) in __i2c_transfer() argument
2086 ret = __i2c_check_suspended(adap); in __i2c_transfer()
2090 if (adap->quirks && i2c_check_for_quirks(adap, msgs, num)) in __i2c_transfer()
2102 trace_i2c_read(adap, &msgs[i], i); in __i2c_transfer()
2104 trace_i2c_write(adap, &msgs[i], i); in __i2c_transfer()
2109 for (ret = 0, try = 0; try <= adap->retries; try++) { in __i2c_transfer()
2110 if (i2c_in_atomic_xfer_mode() && adap->algo->master_xfer_atomic) in __i2c_transfer()
2111 ret = adap->algo->master_xfer_atomic(adap, msgs, num); in __i2c_transfer()
2113 ret = adap->algo->master_xfer(adap, msgs, num); in __i2c_transfer()
2117 if (time_after(jiffies, orig_jiffies + adap->timeout)) in __i2c_transfer()
2125 trace_i2c_reply(adap, &msgs[i], i); in __i2c_transfer()
2126 trace_i2c_result(adap, num, ret); in __i2c_transfer()
2145 int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) in i2c_transfer() argument
2149 if (!adap->algo->master_xfer) { in i2c_transfer()
2150 dev_dbg(&adap->dev, "I2C level transfers not supported\n"); in i2c_transfer()
2170 ret = __i2c_lock_bus_helper(adap); in i2c_transfer()
2174 ret = __i2c_transfer(adap, msgs, num); in i2c_transfer()
2175 i2c_unlock_bus(adap, I2C_LOCK_SEGMENT); in i2c_transfer()
2222 struct i2c_adapter *adap = client->adapter; in i2c_get_device_id() local
2226 if (!i2c_check_functionality(adap, I2C_FUNC_SMBUS_READ_I2C_BLOCK)) in i2c_get_device_id()
2230 ret = i2c_smbus_xfer(adap, I2C_ADDR_DEVICE_ID, 0, in i2c_get_device_id()
2261 static int i2c_default_probe(struct i2c_adapter *adap, unsigned short addr) in i2c_default_probe() argument
2267 if (addr == 0x73 && (adap->class & I2C_CLASS_HWMON) in i2c_default_probe()
2268 && i2c_check_functionality(adap, I2C_FUNC_SMBUS_READ_BYTE_DATA)) in i2c_default_probe()
2269 err = i2c_smbus_xfer(adap, addr, 0, I2C_SMBUS_READ, 0, in i2c_default_probe()
2274 && i2c_check_functionality(adap, I2C_FUNC_SMBUS_QUICK)) in i2c_default_probe()
2275 err = i2c_smbus_xfer(adap, addr, 0, I2C_SMBUS_WRITE, 0, in i2c_default_probe()
2277 else if (i2c_check_functionality(adap, I2C_FUNC_SMBUS_READ_BYTE)) in i2c_default_probe()
2278 err = i2c_smbus_xfer(adap, addr, 0, I2C_SMBUS_READ, 0, in i2c_default_probe()
2281 dev_warn(&adap->dev, "No suitable probing method supported for address 0x%02X\n", in i2c_default_probe()
2394 int i2c_probe_func_quick_read(struct i2c_adapter *adap, unsigned short addr) in i2c_probe_func_quick_read() argument
2396 return i2c_smbus_xfer(adap, addr, 0, I2C_SMBUS_READ, 0, in i2c_probe_func_quick_read()
2402 i2c_new_scanned_device(struct i2c_adapter *adap, in i2c_new_scanned_device() argument
2405 int (*probe)(struct i2c_adapter *adap, unsigned short addr)) in i2c_new_scanned_device() argument
2415 dev_warn(&adap->dev, "Invalid 7-bit address 0x%02x\n", in i2c_new_scanned_device()
2421 if (i2c_check_addr_busy(adap, addr_list[i])) { in i2c_new_scanned_device()
2422 dev_dbg(&adap->dev, in i2c_new_scanned_device()
2429 if (probe(adap, addr_list[i])) in i2c_new_scanned_device()
2434 dev_dbg(&adap->dev, "Probing failed, no device found\n"); in i2c_new_scanned_device()
2439 return i2c_new_client_device(adap, info); in i2c_new_scanned_device()
2463 void i2c_put_adapter(struct i2c_adapter *adap) in i2c_put_adapter() argument
2465 if (!adap) in i2c_put_adapter()
2468 put_device(&adap->dev); in i2c_put_adapter()
2469 module_put(adap->owner); in i2c_put_adapter()