diff options
| -rw-r--r-- | drivers/input/keyboard/cros_ec_keyb.c | 2 | ||||
| -rw-r--r-- | drivers/mfd/cros_ec.c | 54 | ||||
| -rw-r--r-- | drivers/mfd/cros_ec_i2c.c | 1 | ||||
| -rw-r--r-- | drivers/mfd/cros_ec_spi.c | 1 | ||||
| -rw-r--r-- | drivers/platform/chrome/cros_ec_dev.c | 130 | ||||
| -rw-r--r-- | drivers/platform/chrome/cros_ec_dev.h | 7 | ||||
| -rw-r--r-- | drivers/platform/chrome/cros_ec_lightbar.c | 75 | ||||
| -rw-r--r-- | drivers/platform/chrome/cros_ec_lpc.c | 1 | ||||
| -rw-r--r-- | drivers/platform/chrome/cros_ec_sysfs.c | 48 | ||||
| -rw-r--r-- | include/linux/mfd/cros_ec.h | 44 |
10 files changed, 236 insertions, 127 deletions
diff --git a/drivers/input/keyboard/cros_ec_keyb.c b/drivers/input/keyboard/cros_ec_keyb.c index 974154a74505..b01966dc7eb3 100644 --- a/drivers/input/keyboard/cros_ec_keyb.c +++ b/drivers/input/keyboard/cros_ec_keyb.c @@ -275,7 +275,7 @@ static int cros_ec_keyb_probe(struct platform_device *pdev) ckdev->dev = dev; dev_set_drvdata(&pdev->dev, ckdev); - idev->name = ec->ec_name; + idev->name = CROS_EC_DEV_NAME; idev->phys = ec->phys_name; __set_bit(EV_REP, idev->evbit); diff --git a/drivers/mfd/cros_ec.c b/drivers/mfd/cros_ec.c index 08d82bfc5268..11b1884bce62 100644 --- a/drivers/mfd/cros_ec.c +++ b/drivers/mfd/cros_ec.c @@ -24,11 +24,29 @@ #include <linux/mfd/core.h> #include <linux/mfd/cros_ec.h> -static const struct mfd_cell cros_devs[] = { - { - .name = "cros-ec-ctl", - .id = PLATFORM_DEVID_AUTO, - }, +#define CROS_EC_DEV_EC_INDEX 0 +#define CROS_EC_DEV_PD_INDEX 1 + +struct cros_ec_platform ec_p = { + .ec_name = CROS_EC_DEV_NAME, + .cmd_offset = EC_CMD_PASSTHRU_OFFSET(CROS_EC_DEV_EC_INDEX), +}; + +struct cros_ec_platform pd_p = { + .ec_name = CROS_EC_DEV_PD_NAME, + .cmd_offset = EC_CMD_PASSTHRU_OFFSET(CROS_EC_DEV_PD_INDEX), +}; + +struct mfd_cell ec_cell = { + .name = "cros-ec-ctl", + .platform_data = &ec_p, + .pdata_size = sizeof(ec_p), +}; + +struct mfd_cell ec_pd_cell = { + .name = "cros-ec-ctl", + .platform_data = &pd_p, + .pdata_size = sizeof(pd_p), }; int cros_ec_register(struct cros_ec_device *ec_dev) @@ -52,14 +70,34 @@ int cros_ec_register(struct cros_ec_device *ec_dev) cros_ec_query_all(ec_dev); - err = mfd_add_devices(dev, 0, cros_devs, - ARRAY_SIZE(cros_devs), + err = mfd_add_devices(ec_dev->dev, PLATFORM_DEVID_AUTO, &ec_cell, 1, NULL, ec_dev->irq, NULL); if (err) { - dev_err(dev, "failed to add mfd devices\n"); + dev_err(dev, + "Failed to register Embedded Controller subdevice %d\n", + err); return err; } + if (ec_dev->max_passthru) { + /* + * Register a PD device as well on top of this device. + * We make the following assumptions: + * - behind an EC, we have a pd + * - only one device added. + * - the EC is responsive at init time (it is not true for a + * sensor hub. + */ + err = mfd_add_devices(ec_dev->dev, PLATFORM_DEVID_AUTO, + &ec_pd_cell, 1, NULL, ec_dev->irq, NULL); + if (err) { + dev_err(dev, + "Failed to register Power Delivery subdevice %d\n", + err); + return err; + } + } + if (IS_ENABLED(CONFIG_OF) && dev->of_node) { err = of_platform_populate(dev->of_node, NULL, NULL, dev); if (err) { diff --git a/drivers/mfd/cros_ec_i2c.c b/drivers/mfd/cros_ec_i2c.c index 22e8a4ae1711..b9a0963ca5c3 100644 --- a/drivers/mfd/cros_ec_i2c.c +++ b/drivers/mfd/cros_ec_i2c.c @@ -302,7 +302,6 @@ static int cros_ec_i2c_probe(struct i2c_client *client, ec_dev->irq = client->irq; ec_dev->cmd_xfer = cros_ec_cmd_xfer_i2c; ec_dev->pkt_xfer = cros_ec_pkt_xfer_i2c; - ec_dev->ec_name = client->name; ec_dev->phys_name = client->adapter->name; ec_dev->din_size = sizeof(struct ec_host_response_i2c) + sizeof(struct ec_response_get_protocol_info); diff --git a/drivers/mfd/cros_ec_spi.c b/drivers/mfd/cros_ec_spi.c index 4e6f2f6b1095..faba03e2f1ef 100644 --- a/drivers/mfd/cros_ec_spi.c +++ b/drivers/mfd/cros_ec_spi.c @@ -637,7 +637,6 @@ static int cros_ec_spi_probe(struct spi_device *spi) ec_dev->irq = spi->irq; ec_dev->cmd_xfer = cros_ec_cmd_xfer_spi; ec_dev->pkt_xfer = cros_ec_pkt_xfer_spi; - ec_dev->ec_name = ec_spi->spi->modalias; ec_dev->phys_name = dev_name(&ec_spi->spi->dev); ec_dev->din_size = EC_MSG_PREAMBLE_COUNT + sizeof(struct ec_host_response) + diff --git a/drivers/platform/chrome/cros_ec_dev.c b/drivers/platform/chrome/cros_ec_dev.c index e91ced1cb8ce..e8fcdc237029 100644 --- a/drivers/platform/chrome/cros_ec_dev.c +++ b/drivers/platform/chrome/cros_ec_dev.c @@ -27,11 +27,22 @@ /* Device variables */ #define CROS_MAX_DEV 128 -static struct class *cros_class; static int ec_major; +static const struct attribute_group *cros_ec_groups[] = { + &cros_ec_attr_group, + &cros_ec_lightbar_attr_group, + NULL, +}; + +static struct class cros_class = { + .owner = THIS_MODULE, + .name = "chromeos", + .dev_groups = cros_ec_groups, +}; + /* Basic communication */ -static int ec_get_version(struct cros_ec_device *ec, char *str, int maxlen) +static int ec_get_version(struct cros_ec_dev *ec, char *str, int maxlen) { struct ec_response_get_version *resp; static const char * const current_image_name[] = { @@ -45,11 +56,11 @@ static int ec_get_version(struct cros_ec_device *ec, char *str, int maxlen) return -ENOMEM; msg->version = 0; - msg->command = EC_CMD_GET_VERSION; + msg->command = EC_CMD_GET_VERSION + ec->cmd_offset; msg->insize = sizeof(*resp); msg->outsize = 0; - ret = cros_ec_cmd_xfer(ec, msg); + ret = cros_ec_cmd_xfer(ec->ec_dev, msg); if (ret < 0) goto exit; @@ -78,8 +89,10 @@ exit: /* Device file ops */ static int ec_device_open(struct inode *inode, struct file *filp) { - filp->private_data = container_of(inode->i_cdev, - struct cros_ec_device, cdev); + struct cros_ec_dev *ec = container_of(inode->i_cdev, + struct cros_ec_dev, cdev); + filp->private_data = ec; + nonseekable_open(inode, filp); return 0; } @@ -91,7 +104,7 @@ static int ec_device_release(struct inode *inode, struct file *filp) static ssize_t ec_device_read(struct file *filp, char __user *buffer, size_t length, loff_t *offset) { - struct cros_ec_device *ec = filp->private_data; + struct cros_ec_dev *ec = filp->private_data; char msg[sizeof(struct ec_response_get_version) + sizeof(CROS_EC_DEV_VERSION)]; size_t count; @@ -114,7 +127,7 @@ static ssize_t ec_device_read(struct file *filp, char __user *buffer, } /* Ioctls */ -static long ec_device_ioctl_xcmd(struct cros_ec_device *ec, void __user *arg) +static long ec_device_ioctl_xcmd(struct cros_ec_dev *ec, void __user *arg) { long ret; struct cros_ec_command u_cmd; @@ -133,7 +146,8 @@ static long ec_device_ioctl_xcmd(struct cros_ec_device *ec, void __user *arg) goto exit; } - ret = cros_ec_cmd_xfer(ec, s_cmd); + s_cmd->command += ec->cmd_offset; + ret = cros_ec_cmd_xfer(ec->ec_dev, s_cmd); /* Only copy data to userland if data was received. */ if (ret < 0) goto exit; @@ -145,19 +159,21 @@ exit: return ret; } -static long ec_device_ioctl_readmem(struct cros_ec_device *ec, void __user *arg) +static long ec_device_ioctl_readmem(struct cros_ec_dev *ec, void __user *arg) { + struct cros_ec_device *ec_dev = ec->ec_dev; struct cros_ec_readmem s_mem = { }; long num; /* Not every platform supports direct reads */ - if (!ec->cmd_readmem) + if (!ec_dev->cmd_readmem) return -ENOTTY; if (copy_from_user(&s_mem, arg, sizeof(s_mem))) return -EFAULT; - num = ec->cmd_readmem(ec, s_mem.offset, s_mem.bytes, s_mem.buffer); + num = ec_dev->cmd_readmem(ec_dev, s_mem.offset, s_mem.bytes, + s_mem.buffer); if (num <= 0) return num; @@ -170,7 +186,7 @@ static long ec_device_ioctl_readmem(struct cros_ec_device *ec, void __user *arg) static long ec_device_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { - struct cros_ec_device *ec = filp->private_data; + struct cros_ec_dev *ec = filp->private_data; if (_IOC_TYPE(cmd) != CROS_EC_DEV_IOC) return -ENOTTY; @@ -193,45 +209,81 @@ static const struct file_operations fops = { .unlocked_ioctl = ec_device_ioctl, }; +static void __remove(struct device *dev) +{ + struct cros_ec_dev *ec = container_of(dev, struct cros_ec_dev, + class_dev); + kfree(ec); +} + static int ec_device_probe(struct platform_device *pdev) { - struct cros_ec_device *ec = dev_get_drvdata(pdev->dev.parent); - int retval = -ENOTTY; - dev_t devno = MKDEV(ec_major, 0); + int retval = -ENOMEM; + struct device *dev = &pdev->dev; + struct cros_ec_platform *ec_platform = dev_get_platdata(dev); + dev_t devno = MKDEV(ec_major, pdev->id); + struct cros_ec_dev *ec = kzalloc(sizeof(*ec), GFP_KERNEL); + + if (!ec) + return retval; - /* Instantiate it (and remember the EC) */ + dev_set_drvdata(dev, ec); + ec->ec_dev = dev_get_drvdata(dev->parent); + ec->dev = dev; + ec->cmd_offset = ec_platform->cmd_offset; + device_initialize(&ec->class_dev); cdev_init(&ec->cdev, &fops); + /* + * Add the character device + * Link cdev to the class device to be sure device is not used + * before unbinding it. + */ + ec->cdev.kobj.parent = &ec->class_dev.kobj; retval = cdev_add(&ec->cdev, devno, 1); if (retval) { - dev_err(&pdev->dev, ": failed to add character device\n"); - return retval; + dev_err(dev, ": failed to add character device\n"); + goto cdev_add_failed; } - ec->vdev = device_create(cros_class, NULL, devno, ec, - CROS_EC_DEV_NAME); - if (IS_ERR(ec->vdev)) { - retval = PTR_ERR(ec->vdev); - dev_err(&pdev->dev, ": failed to create device\n"); - cdev_del(&ec->cdev); - return retval; + /* + * Add the class device + * Link to the character device for creating the /dev entry + * in devtmpfs. + */ + ec->class_dev.devt = ec->cdev.dev; + ec->class_dev.class = &cros_class; + ec->class_dev.parent = dev; + ec->class_dev.release = __remove; + + retval = dev_set_name(&ec->class_dev, "%s", ec_platform->ec_name); + if (retval) { + dev_err(dev, "dev_set_name failed => %d\n", retval); + goto set_named_failed; } - /* Initialize extra interfaces */ - ec_dev_sysfs_init(ec); - ec_dev_lightbar_init(ec); + retval = device_add(&ec->class_dev); + if (retval) { + dev_err(dev, "device_register failed => %d\n", retval); + goto dev_reg_failed; + } return 0; + +dev_reg_failed: +set_named_failed: + dev_set_drvdata(dev, NULL); + cdev_del(&ec->cdev); +cdev_add_failed: + kfree(ec); + return retval; } static int ec_device_remove(struct platform_device *pdev) { - struct cros_ec_device *ec = dev_get_drvdata(pdev->dev.parent); - - ec_dev_lightbar_remove(ec); - ec_dev_sysfs_remove(ec); - device_destroy(cros_class, MKDEV(ec_major, 0)); + struct cros_ec_dev *ec = dev_get_drvdata(&pdev->dev); cdev_del(&ec->cdev); + device_unregister(&ec->class_dev); return 0; } @@ -248,10 +300,10 @@ static int __init cros_ec_dev_init(void) int ret; dev_t dev = 0; - cros_class = class_create(THIS_MODULE, "chromeos"); - if (IS_ERR(cros_class)) { + ret = class_register(&cros_class); + if (ret) { pr_err(CROS_EC_DEV_NAME ": failed to register device class\n"); - return PTR_ERR(cros_class); + return ret; } /* Get a range of minor numbers (starting with 0) to work with */ @@ -273,7 +325,7 @@ static int __init cros_ec_dev_init(void) failed_devreg: unregister_chrdev_region(MKDEV(ec_major, 0), CROS_MAX_DEV); failed_chrdevreg: - class_destroy(cros_class); + class_unregister(&cros_class); return ret; } @@ -281,7 +333,7 @@ static void __exit cros_ec_dev_exit(void) { platform_driver_unregister(&cros_ec_dev_driver); unregister_chrdev(ec_major, CROS_EC_DEV_NAME); - class_destroy(cros_class); + class_unregister(&cros_class); } module_init(cros_ec_dev_init); diff --git a/drivers/platform/chrome/cros_ec_dev.h b/drivers/platform/chrome/cros_ec_dev.h index 45d67f7e518c..bfd2c84c3571 100644 --- a/drivers/platform/chrome/cros_ec_dev.h +++ b/drivers/platform/chrome/cros_ec_dev.h @@ -24,7 +24,6 @@ #include <linux/types.h> #include <linux/mfd/cros_ec.h> -#define CROS_EC_DEV_NAME "cros_ec" #define CROS_EC_DEV_VERSION "1.0.0" /* @@ -44,10 +43,4 @@ struct cros_ec_readmem { #define CROS_EC_DEV_IOCXCMD _IOWR(CROS_EC_DEV_IOC, 0, struct cros_ec_command) #define CROS_EC_DEV_IOCRDMEM _IOWR(CROS_EC_DEV_IOC, 1, struct cros_ec_readmem) -void ec_dev_sysfs_init(struct cros_ec_device *); -void ec_dev_sysfs_remove(struct cros_ec_device *); - -void ec_dev_lightbar_init(struct cros_ec_device *); -void ec_dev_lightbar_remove(struct cros_ec_device *); - #endif /* _CROS_EC_DEV_H_ */ diff --git a/drivers/platform/chrome/cros_ec_lightbar.c b/drivers/platform/chrome/cros_ec_lightbar.c index 6e1986a2dce1..144e09df9b84 100644 --- a/drivers/platform/chrome/cros_ec_lightbar.c +++ b/drivers/platform/chrome/cros_ec_lightbar.c @@ -92,7 +92,7 @@ out: return ret; } -static struct cros_ec_command *alloc_lightbar_cmd_msg(void) +static struct cros_ec_command *alloc_lightbar_cmd_msg(struct cros_ec_dev *ec) { struct cros_ec_command *msg; int len; @@ -105,14 +105,14 @@ static struct cros_ec_command *alloc_lightbar_cmd_msg(void) return NULL; msg->version = 0; - msg->command = EC_CMD_LIGHTBAR_CMD; + msg->command = EC_CMD_LIGHTBAR_CMD + ec->cmd_offset; msg->outsize = sizeof(struct ec_params_lightbar); msg->insize = sizeof(struct ec_response_lightbar); return msg; } -static int get_lightbar_version(struct cros_ec_device *ec, +static int get_lightbar_version(struct cros_ec_dev *ec, uint32_t *ver_ptr, uint32_t *flg_ptr) { struct ec_params_lightbar *param; @@ -120,13 +120,13 @@ static int get_lightbar_version(struct cros_ec_device *ec, struct cros_ec_command *msg; int ret; - msg = alloc_lightbar_cmd_msg(); + msg = alloc_lightbar_cmd_msg(ec); if (!msg) return 0; param = (struct ec_params_lightbar *)msg->data; param->cmd = LIGHTBAR_CMD_VERSION; - ret = cros_ec_cmd_xfer(ec, msg); + ret = cros_ec_cmd_xfer(ec->ec_dev, msg); if (ret < 0) { ret = 0; goto exit; @@ -165,7 +165,8 @@ static ssize_t version_show(struct device *dev, struct device_attribute *attr, char *buf) { uint32_t version = 0, flags = 0; - struct cros_ec_device *ec = dev_get_drvdata(dev); + struct cros_ec_dev *ec = container_of(dev, + struct cros_ec_dev, class_dev); int ret; ret = lb_throttle(); @@ -187,12 +188,13 @@ static ssize_t brightness_store(struct device *dev, struct cros_ec_command *msg; int ret; unsigned int val; - struct cros_ec_device *ec = dev_get_drvdata(dev); + struct cros_ec_dev *ec = container_of(dev, + struct cros_ec_dev, class_dev); if (kstrtouint(buf, 0, &val)) return -EINVAL; - msg = alloc_lightbar_cmd_msg(); + msg = alloc_lightbar_cmd_msg(ec); if (!msg) return -ENOMEM; @@ -203,7 +205,7 @@ static ssize_t brightness_store(struct device *dev, if (ret) goto exit; - ret = cros_ec_cmd_xfer(ec, msg); + ret = cros_ec_cmd_xfer(ec->ec_dev, msg); if (ret < 0) goto exit; @@ -231,11 +233,12 @@ static ssize_t led_rgb_store(struct device *dev, struct device_attribute *attr, { struct ec_params_lightbar *param; struct cros_ec_command *msg; - struct cros_ec_device *ec = dev_get_drvdata(dev); + struct cros_ec_dev *ec = container_of(dev, + struct cros_ec_dev, class_dev); unsigned int val[4]; int ret, i = 0, j = 0, ok = 0; - msg = alloc_lightbar_cmd_msg(); + msg = alloc_lightbar_cmd_msg(ec); if (!msg) return -ENOMEM; @@ -268,7 +271,7 @@ static ssize_t led_rgb_store(struct device *dev, struct device_attribute *attr, return ret; } - ret = cros_ec_cmd_xfer(ec, msg); + ret = cros_ec_cmd_xfer(ec->ec_dev, msg); if (ret < 0) goto exit; @@ -304,9 +307,10 @@ static ssize_t sequence_show(struct device *dev, struct ec_response_lightbar *resp; struct cros_ec_command *msg; int ret; - struct cros_ec_device *ec = dev_get_drvdata(dev); + struct cros_ec_dev *ec = container_of(dev, + struct cros_ec_dev, class_dev); - msg = alloc_lightbar_cmd_msg(); + msg = alloc_lightbar_cmd_msg(ec); if (!msg) return -ENOMEM; @@ -316,7 +320,7 @@ static ssize_t sequence_show(struct device *dev, if (ret) goto exit; - ret = cros_ec_cmd_xfer(ec, msg); + ret = cros_ec_cmd_xfer(ec->ec_dev, msg); if (ret < 0) goto exit; @@ -345,9 +349,10 @@ static ssize_t sequence_store(struct device *dev, struct device_attribute *attr, struct cros_ec_command *msg; unsigned int num; int ret, len; - struct cros_ec_device *ec = dev_get_drvdata(dev); + struct cros_ec_dev *ec = container_of(dev, + struct cros_ec_dev, class_dev); - msg = alloc_lightbar_cmd_msg(); + msg = alloc_lightbar_cmd_msg(ec); if (!msg) return -ENOMEM; @@ -372,7 +377,7 @@ static ssize_t sequence_store(struct device *dev, struct device_attribute *attr, if (ret) return ret; - ret = cros_ec_cmd_xfer(ec, msg); + ret = cros_ec_cmd_xfer(ec->ec_dev, msg); if (ret < 0) return ret; @@ -397,25 +402,27 @@ static struct attribute *__lb_cmds_attrs[] = { &dev_attr_sequence.attr, NULL, }; -static struct attribute_group lb_cmds_attr_group = { - .name = "lightbar", - .attrs = __lb_cmds_attrs, -}; -void ec_dev_lightbar_init(struct cros_ec_device *ec) +static umode_t cros_ec_lightbar_attrs_are_visible(struct kobject *kobj, + struct attribute *a, int n) { - int ret = 0; + struct device *dev = container_of(kobj, struct device, kobj); + struct cros_ec_dev *ec = container_of(dev, + struct cros_ec_dev, class_dev); + struct platform_device *pdev = container_of(ec->dev, + struct platform_device, dev); + if (pdev->id != 0) + return 0; /* Only instantiate this stuff if the EC has a lightbar */ - if (!get_lightbar_version(ec, NULL, NULL)) - return; - - ret = sysfs_create_group(&ec->vdev->kobj, &lb_cmds_attr_group); - if (ret) - pr_warn("sysfs_create_group() failed: %d\n", ret); + if (get_lightbar_version(ec, NULL, NULL)) + return a->mode; + else + return 0; } -void ec_dev_lightbar_remove(struct cros_ec_device *ec) -{ - sysfs_remove_group(&ec->vdev->kobj, &lb_cmds_attr_group); -} +struct attribute_group cros_ec_lightbar_attr_group = { + .name = "lightbar", + .attrs = __lb_cmds_attrs, + .is_visible = cros_ec_lightbar_attrs_are_visible, +}; diff --git a/drivers/platform/chrome/cros_ec_lpc.c b/drivers/platform/chrome/cros_ec_lpc.c index cac24d356c91..bdd77ce45f05 100644 --- a/drivers/platform/chrome/cros_ec_lpc.c +++ b/drivers/platform/chrome/cros_ec_lpc.c @@ -283,7 +283,6 @@ static int cros_ec_lpc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, ec_dev); ec_dev->dev = dev; - ec_dev->ec_name = pdev->name; ec_dev->phys_name = dev_name(dev); ec_dev->cmd_xfer = cros_ec_cmd_xfer_lpc; ec_dev->pkt_xfer = cros_ec_pkt_xfer_lpc; diff --git a/drivers/platform/chrome/cros_ec_sysfs.c b/drivers/platform/chrome/cros_ec_sysfs.c index 78ba82d670cb..f3baf9973989 100644 --- a/drivers/platform/chrome/cros_ec_sysfs.c +++ b/drivers/platform/chrome/cros_ec_sysfs.c @@ -72,7 +72,8 @@ static ssize_t store_ec_reboot(struct device *dev, int got_cmd = 0, offset = 0; int i; int ret; - struct cros_ec_device *ec = dev_get_drvdata(dev); + struct cros_ec_dev *ec = container_of(dev, + struct cros_ec_dev, class_dev); msg = kmalloc(sizeof(*msg) + sizeof(*param), GFP_KERNEL); if (!msg) @@ -112,10 +113,10 @@ static ssize_t store_ec_reboot(struct device *dev, } msg->version = 0; - msg->command = EC_CMD_REBOOT_EC; + msg->command = EC_CMD_REBOOT_EC + ec->cmd_offset; msg->outsize = sizeof(*param); msg->insize = 0; - ret = cros_ec_cmd_xfer(ec, msg); + ret = cros_ec_cmd_xfer(ec->ec_dev, msg); if (ret < 0) { count = ret; goto exit; @@ -139,7 +140,8 @@ static ssize_t show_ec_version(struct device *dev, struct cros_ec_command *msg; int ret; int count = 0; - struct cros_ec_device *ec = dev_get_drvdata(dev); + struct cros_ec_dev *ec = container_of(dev, + struct cros_ec_dev, class_dev); msg = kmalloc(sizeof(*msg) + EC_HOST_PARAM_SIZE, GFP_KERNEL); if (!msg) @@ -147,10 +149,10 @@ static ssize_t show_ec_version(struct device *dev, /* Get versions. RW may change. */ msg->version = 0; - msg->command = EC_CMD_GET_VERSION; + msg->command = EC_CMD_GET_VERSION + ec->cmd_offset; msg->insize = sizeof(*r_ver); msg->outsize = 0; - ret = cros_ec_cmd_xfer(ec, msg); + ret = cros_ec_cmd_xfer(ec->ec_dev, msg); if (ret < 0) { count = ret; goto exit; @@ -175,9 +177,9 @@ static ssize_t show_ec_version(struct device *dev, image_names[r_ver->current_image] : "?")); /* Get build info. */ - msg->command = EC_CMD_GET_BUILD_INFO; + msg->command = EC_CMD_GET_BUILD_INFO + ec->cmd_offset; msg->insize = EC_HOST_PARAM_SIZE; - ret = cros_ec_cmd_xfer(ec, msg); + ret = cros_ec_cmd_xfer(ec->ec_dev, msg); if (ret < 0) count += scnprintf(buf + count, PAGE_SIZE - count, "Build info: XFER ERROR %d\n", ret); @@ -191,9 +193,9 @@ static ssize_t show_ec_version(struct device *dev, } /* Get chip info. */ - msg->command = EC_CMD_GET_CHIP_INFO; + msg->command = EC_CMD_GET_CHIP_INFO + ec->cmd_offset; msg->insize = sizeof(*r_chip); - ret = cros_ec_cmd_xfer(ec, msg); + ret = cros_ec_cmd_xfer(ec->ec_dev, msg); if (ret < 0) count += scnprintf(buf + count, PAGE_SIZE - count, "Chip info: XFER ERROR %d\n", ret); @@ -215,9 +217,9 @@ static ssize_t show_ec_version(struct device *dev, } /* Get board version */ - msg->command = EC_CMD_GET_BOARD_VERSION; + msg->command = EC_CMD_GET_BOARD_VERSION + ec->cmd_offset; msg->insize = sizeof(*r_board); - ret = cros_ec_cmd_xfer(ec, msg); + ret = cros_ec_cmd_xfer(ec->ec_dev, msg); if (ret < 0) count += scnprintf(buf + count, PAGE_SIZE - count, "Board version: XFER ERROR %d\n", ret); @@ -243,7 +245,8 @@ static ssize_t show_ec_flashinfo(struct device *dev, struct ec_response_flash_info *resp; struct cros_ec_command *msg; int ret; - struct cros_ec_device *ec = dev_get_drvdata(dev); + struct cros_ec_dev *ec = container_of(dev, + struct cros_ec_dev, class_dev); msg = kmalloc(sizeof(*msg) + sizeof(*resp), GFP_KERNEL); if (!msg) @@ -251,10 +254,10 @@ static ssize_t show_ec_flashinfo(struct device *dev, /* The flash info shouldn't ever change, but ask each time anyway. */ msg->version = 0; - msg->command = EC_CMD_FLASH_INFO; + msg->command = EC_CMD_FLASH_INFO + ec->cmd_offset; msg->insize = sizeof(*resp); msg->outsize = 0; - ret = cros_ec_cmd_xfer(ec, msg); + ret = cros_ec_cmd_xfer(ec->ec_dev, msg); if (ret < 0) goto exit; if (msg->result != EC_RES_SUCCESS) { @@ -288,20 +291,7 @@ static struct attribute *__ec_attrs[] = { NULL, }; -static struct attribute_group ec_attr_group = { +struct attribute_group cros_ec_attr_group = { .attrs = __ec_attrs, }; -void ec_dev_sysfs_init(struct cros_ec_device *ec) -{ - int error; - - error = sysfs_create_group(&ec->vdev->kobj, &ec_attr_group); - if (error) - pr_warn("failed to create group: %d\n", error); -} - -void ec_dev_sysfs_remove(struct cros_ec_device *ec) -{ - sysfs_remove_group(&ec->vdev->kobj, &ec_attr_group); -} diff --git a/include/linux/mfd/cros_ec.h b/include/linux/mfd/cros_ec.h index 92e13aaa450c..da72671a42fa 100644 --- a/include/linux/mfd/cros_ec.h +++ b/include/linux/mfd/cros_ec.h @@ -17,10 +17,14 @@ #define __LINUX_MFD_CROS_EC_H #include <linux/cdev.h> +#include <linux/device.h> #include <linux/notifier.h> #include <linux/mfd/cros_ec_commands.h> #include <linux/mutex.h> +#define CROS_EC_DEV_NAME "cros_ec" +#define CROS_EC_DEV_PD_NAME "cros_pd" + /* * The EC is unresponsive for a time after a reboot command. Add a * simple delay to make sure that the bus stays locked. @@ -71,11 +75,8 @@ struct cros_ec_command { /** * struct cros_ec_device - Information about a ChromeOS EC device * - * @ec_name: name of EC device (e.g. 'chromeos-ec') * @phys_name: name of physical comms layer (e.g. 'i2c-4') * @dev: Device pointer for physical comms device - * @vdev: Device pointer for virtual comms device - * @cdev: Character device structure for virtual comms device * @was_wake_device: true if this device was set to wake the system from * sleep at the last suspend * @cmd_readmem: direct read of the EC memory-mapped region, if supported @@ -87,6 +88,7 @@ struct cros_ec_command { * * @priv: Private data * @irq: Interrupt to use + * @id: Device id * @din: input buffer (for data from EC) * @dout: output buffer (for data to EC) * \note @@ -109,11 +111,8 @@ struct cros_ec_command { struct cros_ec_device { /* These are used by other drivers that want to talk to the EC */ - const char *ec_name; const char *phys_name; struct device *dev; - struct device *vdev; - struct cdev cdev; bool was_wake_device; struct class *cros_class; int (*cmd_readmem)(struct cros_ec_device *ec, unsigned int offset, @@ -138,6 +137,35 @@ struct cros_ec_device { struct mutex lock; }; +/* struct cros_ec_platform - ChromeOS EC platform information + * + * @ec_name: name of EC device (e.g. 'cros-ec', 'cros-pd', ...) + * used in /dev/ and sysfs. + * @cmd_offset: offset to apply for each command. Set when + * registering a devicde behind another one. + */ +struct cros_ec_platform { + const char *ec_name; + u16 cmd_offset; +}; + +/* + * struct cros_ec_dev - ChromeOS EC device entry point + * + * @class_dev: Device structure used in sysfs + * @cdev: Character device structure in /dev + * @ec_dev: cros_ec_device structure to talk to the physical device + * @dev: pointer to the platform device + * @cmd_offset: offset to apply for each command. + */ +struct cros_ec_dev { + struct device class_dev; + struct cdev cdev; + struct cros_ec_device *ec_dev; + struct device *dev; + u16 cmd_offset; +}; + /** * cros_ec_suspend - Handle a suspend operation for the ChromeOS EC device * @@ -224,4 +252,8 @@ int cros_ec_register(struct cros_ec_device *ec_dev); */ int cros_ec_query_all(struct cros_ec_device *ec_dev); +/* sysfs stuff */ +extern struct attribute_group cros_ec_attr_group; +extern struct attribute_group cros_ec_lightbar_attr_group; + #endif /* __LINUX_MFD_CROS_EC_H */ |