Lines Matching +full:cros +full:- +full:ec
2 * cros_ec_dev - expose the Chrome OS Embedded Controller to user-space
31 #define DRV_NAME "cros-ec-dev"
51 static int ec_get_version(struct cros_ec_dev *ec, char *str, int maxlen) in ec_get_version() argument
55 "unknown", "read-only", "read-write", "invalid", in ec_get_version()
62 return -ENOMEM; in ec_get_version()
64 msg->version = 0; in ec_get_version()
65 msg->command = EC_CMD_GET_VERSION + ec->cmd_offset; in ec_get_version()
66 msg->insize = sizeof(*resp); in ec_get_version()
67 msg->outsize = 0; in ec_get_version()
69 ret = cros_ec_cmd_xfer(ec->ec_dev, msg); in ec_get_version()
73 if (msg->result != EC_RES_SUCCESS) { in ec_get_version()
75 "%s\nUnknown EC version: EC returned %d\n", in ec_get_version()
76 CROS_EC_DEV_VERSION, msg->result); in ec_get_version()
77 ret = -EINVAL; in ec_get_version()
81 resp = (struct ec_response_get_version *)msg->data; in ec_get_version()
82 if (resp->current_image >= ARRAY_SIZE(current_image_name)) in ec_get_version()
83 resp->current_image = 3; /* invalid */ in ec_get_version()
86 resp->version_string_ro, resp->version_string_rw, in ec_get_version()
87 current_image_name[resp->current_image]); in ec_get_version()
95 static int cros_ec_check_features(struct cros_ec_dev *ec, int feature) in cros_ec_check_features() argument
100 if (ec->features[0] == -1U && ec->features[1] == -1U) { in cros_ec_check_features()
103 msg = kmalloc(sizeof(*msg) + sizeof(ec->features), GFP_KERNEL); in cros_ec_check_features()
105 return -ENOMEM; in cros_ec_check_features()
107 msg->version = 0; in cros_ec_check_features()
108 msg->command = EC_CMD_GET_FEATURES + ec->cmd_offset; in cros_ec_check_features()
109 msg->insize = sizeof(ec->features); in cros_ec_check_features()
110 msg->outsize = 0; in cros_ec_check_features()
112 ret = cros_ec_cmd_xfer(ec->ec_dev, msg); in cros_ec_check_features()
113 if (ret < 0 || msg->result != EC_RES_SUCCESS) { in cros_ec_check_features()
114 dev_warn(ec->dev, "cannot get EC features: %d/%d\n", in cros_ec_check_features()
115 ret, msg->result); in cros_ec_check_features()
116 memset(ec->features, 0, sizeof(ec->features)); in cros_ec_check_features()
118 memcpy(ec->features, msg->data, sizeof(ec->features)); in cros_ec_check_features()
121 dev_dbg(ec->dev, "EC features %08x %08x\n", in cros_ec_check_features()
122 ec->features[0], ec->features[1]); in cros_ec_check_features()
127 return ec->features[feature / 32] & EC_FEATURE_MASK_0(feature); in cros_ec_check_features()
133 struct cros_ec_dev *ec = container_of(inode->i_cdev, in ec_device_open() local
135 filp->private_data = ec; in ec_device_open()
148 struct cros_ec_dev *ec = filp->private_data; in ec_device_read() local
157 ret = ec_get_version(ec, msg, sizeof(msg)); in ec_device_read()
164 return -EFAULT; in ec_device_read()
171 static long ec_device_ioctl_xcmd(struct cros_ec_dev *ec, void __user *arg) in ec_device_ioctl_xcmd() argument
178 return -EFAULT; in ec_device_ioctl_xcmd()
182 return -EINVAL; in ec_device_ioctl_xcmd()
187 return -ENOMEM; in ec_device_ioctl_xcmd()
190 ret = -EFAULT; in ec_device_ioctl_xcmd()
194 if (u_cmd.outsize != s_cmd->outsize || in ec_device_ioctl_xcmd()
195 u_cmd.insize != s_cmd->insize) { in ec_device_ioctl_xcmd()
196 ret = -EINVAL; in ec_device_ioctl_xcmd()
200 s_cmd->command += ec->cmd_offset; in ec_device_ioctl_xcmd()
201 ret = cros_ec_cmd_xfer(ec->ec_dev, s_cmd); in ec_device_ioctl_xcmd()
206 if (copy_to_user(arg, s_cmd, sizeof(*s_cmd) + s_cmd->insize)) in ec_device_ioctl_xcmd()
207 ret = -EFAULT; in ec_device_ioctl_xcmd()
213 static long ec_device_ioctl_readmem(struct cros_ec_dev *ec, void __user *arg) in ec_device_ioctl_readmem() argument
215 struct cros_ec_device *ec_dev = ec->ec_dev; in ec_device_ioctl_readmem()
220 if (!ec_dev->cmd_readmem) in ec_device_ioctl_readmem()
221 return -ENOTTY; in ec_device_ioctl_readmem()
224 return -EFAULT; in ec_device_ioctl_readmem()
226 num = ec_dev->cmd_readmem(ec_dev, s_mem.offset, s_mem.bytes, in ec_device_ioctl_readmem()
232 return -EFAULT; in ec_device_ioctl_readmem()
240 struct cros_ec_dev *ec = filp->private_data; in ec_device_ioctl() local
243 return -ENOTTY; in ec_device_ioctl()
247 return ec_device_ioctl_xcmd(ec, (void __user *)arg); in ec_device_ioctl()
249 return ec_device_ioctl_readmem(ec, (void __user *)arg); in ec_device_ioctl()
252 return -ENOTTY; in ec_device_ioctl()
271 static void cros_ec_sensors_register(struct cros_ec_dev *ec) in cros_ec_sensors_register() argument
290 msg->version = 2; in cros_ec_sensors_register()
291 msg->command = EC_CMD_MOTION_SENSE_CMD + ec->cmd_offset; in cros_ec_sensors_register()
292 msg->outsize = sizeof(*params); in cros_ec_sensors_register()
293 msg->insize = sizeof(*resp); in cros_ec_sensors_register()
295 params = (struct ec_params_motion_sense *)msg->data; in cros_ec_sensors_register()
296 params->cmd = MOTIONSENSE_CMD_DUMP; in cros_ec_sensors_register()
298 ret = cros_ec_cmd_xfer(ec->ec_dev, msg); in cros_ec_sensors_register()
299 if (ret < 0 || msg->result != EC_RES_SUCCESS) { in cros_ec_sensors_register()
300 dev_warn(ec->dev, "cannot get EC sensor information: %d/%d\n", in cros_ec_sensors_register()
301 ret, msg->result); in cros_ec_sensors_register()
305 resp = (struct ec_response_motion_sense *)msg->data; in cros_ec_sensors_register()
306 sensor_num = resp->dump.sensor_count; in cros_ec_sensors_register()
322 params->cmd = MOTIONSENSE_CMD_INFO; in cros_ec_sensors_register()
323 params->info.sensor_num = i; in cros_ec_sensors_register()
324 ret = cros_ec_cmd_xfer(ec->ec_dev, msg); in cros_ec_sensors_register()
325 if (ret < 0 || msg->result != EC_RES_SUCCESS) { in cros_ec_sensors_register()
326 dev_warn(ec->dev, "no info for EC sensor %d : %d/%d\n", in cros_ec_sensors_register()
327 i, ret, msg->result); in cros_ec_sensors_register()
330 switch (resp->info.type) { in cros_ec_sensors_register()
332 sensor_cells[id].name = "cros-ec-accel"; in cros_ec_sensors_register()
335 sensor_cells[id].name = "cros-ec-baro"; in cros_ec_sensors_register()
338 sensor_cells[id].name = "cros-ec-gyro"; in cros_ec_sensors_register()
341 sensor_cells[id].name = "cros-ec-mag"; in cros_ec_sensors_register()
344 sensor_cells[id].name = "cros-ec-prox"; in cros_ec_sensors_register()
347 sensor_cells[id].name = "cros-ec-light"; in cros_ec_sensors_register()
350 sensor_cells[id].name = "cros-ec-activity"; in cros_ec_sensors_register()
353 dev_warn(ec->dev, "unknown type %d\n", resp->info.type); in cros_ec_sensors_register()
357 sensor_cells[id].id = sensor_type[resp->info.type]; in cros_ec_sensors_register()
362 sensor_type[resp->info.type]++; in cros_ec_sensors_register()
367 ec->has_kb_wake_angle = true; in cros_ec_sensors_register()
369 if (cros_ec_check_features(ec, EC_FEATURE_MOTION_SENSE_FIFO)) { in cros_ec_sensors_register()
370 sensor_cells[id].name = "cros-ec-ring"; in cros_ec_sensors_register()
374 ret = mfd_add_devices(ec->dev, 0, sensor_cells, id, in cros_ec_sensors_register()
377 dev_err(ec->dev, "failed to add EC sensors\n"); in cros_ec_sensors_register()
387 { .name = "cros-ec-cec" }
391 { .name = "cros-ec-rtc" }
395 { .name = "cros-usbpd-charger" }
400 int retval = -ENOMEM; in ec_device_probe()
401 struct device *dev = &pdev->dev; in ec_device_probe()
403 struct cros_ec_dev *ec = kzalloc(sizeof(*ec), GFP_KERNEL); in ec_device_probe() local
405 if (!ec) in ec_device_probe()
408 dev_set_drvdata(dev, ec); in ec_device_probe()
409 ec->ec_dev = dev_get_drvdata(dev->parent); in ec_device_probe()
410 ec->dev = dev; in ec_device_probe()
411 ec->cmd_offset = ec_platform->cmd_offset; in ec_device_probe()
412 ec->features[0] = -1U; /* Not cached yet */ in ec_device_probe()
413 ec->features[1] = -1U; /* Not cached yet */ in ec_device_probe()
414 device_initialize(&ec->class_dev); in ec_device_probe()
415 cdev_init(&ec->cdev, &fops); in ec_device_probe()
422 ec->class_dev.devt = MKDEV(ec_major, pdev->id); in ec_device_probe()
423 ec->class_dev.class = &cros_class; in ec_device_probe()
424 ec->class_dev.parent = dev; in ec_device_probe()
425 ec->class_dev.release = cros_ec_class_release; in ec_device_probe()
427 retval = dev_set_name(&ec->class_dev, "%s", ec_platform->ec_name); in ec_device_probe()
433 /* check whether this EC is a sensor hub. */ in ec_device_probe()
434 if (cros_ec_check_features(ec, EC_FEATURE_MOTION_SENSE)) in ec_device_probe()
435 cros_ec_sensors_register(ec); in ec_device_probe()
437 /* Check whether this EC instance has CEC host command support */ in ec_device_probe()
438 if (cros_ec_check_features(ec, EC_FEATURE_CEC)) { in ec_device_probe()
439 retval = mfd_add_devices(ec->dev, PLATFORM_DEVID_AUTO, in ec_device_probe()
444 dev_err(ec->dev, in ec_device_probe()
445 "failed to add cros-ec-cec device: %d\n", in ec_device_probe()
449 /* Check whether this EC instance has RTC host command support */ in ec_device_probe()
450 if (cros_ec_check_features(ec, EC_FEATURE_RTC)) { in ec_device_probe()
451 retval = mfd_add_devices(ec->dev, PLATFORM_DEVID_AUTO, in ec_device_probe()
456 dev_err(ec->dev, in ec_device_probe()
457 "failed to add cros-ec-rtc device: %d\n", in ec_device_probe()
461 /* Check whether this EC instance has the PD charge manager */ in ec_device_probe()
462 if (cros_ec_check_features(ec, EC_FEATURE_USB_PD)) { in ec_device_probe()
463 retval = mfd_add_devices(ec->dev, PLATFORM_DEVID_AUTO, in ec_device_probe()
468 dev_err(ec->dev, in ec_device_probe()
469 "failed to add cros-usbpd-charger device: %d\n", in ec_device_probe()
473 /* Take control of the lightbar from the EC. */ in ec_device_probe()
474 lb_manual_suspend_ctrl(ec, 1); in ec_device_probe()
477 retval = cdev_device_add(&ec->cdev, &ec->class_dev); in ec_device_probe()
483 if (cros_ec_debugfs_init(ec)) in ec_device_probe()
489 put_device(&ec->class_dev); in ec_device_probe()
495 struct cros_ec_dev *ec = dev_get_drvdata(&pdev->dev); in ec_device_remove() local
497 /* Let the EC take over the lightbar again. */ in ec_device_remove()
498 lb_manual_suspend_ctrl(ec, 0); in ec_device_remove()
500 cros_ec_debugfs_remove(ec); in ec_device_remove()
502 mfd_remove_devices(ec->dev); in ec_device_remove()
503 cdev_del(&ec->cdev); in ec_device_remove()
504 device_unregister(&ec->class_dev); in ec_device_remove()
510 struct cros_ec_dev *ec = dev_get_drvdata(&pdev->dev); in ec_device_shutdown() local
513 cros_ec_debugfs_remove(ec); in ec_device_shutdown()
524 struct cros_ec_dev *ec = dev_get_drvdata(dev); in ec_device_suspend() local
526 cros_ec_debugfs_suspend(ec); in ec_device_suspend()
528 lb_suspend(ec); in ec_device_suspend()
535 struct cros_ec_dev *ec = dev_get_drvdata(dev); in ec_device_resume() local
537 cros_ec_debugfs_resume(ec); in ec_device_resume()
539 lb_resume(ec); in ec_device_resume()