diff options
Diffstat (limited to 'drivers/platform/x86/ideapad-laptop.c')
| -rw-r--r-- | drivers/platform/x86/ideapad-laptop.c | 1393 |
1 files changed, 1393 insertions, 0 deletions
diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c new file mode 100644 index 000000000..62d4b94e2 --- /dev/null +++ b/drivers/platform/x86/ideapad-laptop.c @@ -0,0 +1,1393 @@ +/* + * ideapad-laptop.c - Lenovo IdeaPad ACPI Extras + * + * Copyright © 2010 Intel Corporation + * Copyright © 2010 David Woodhouse <dwmw2@infradead.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/acpi.h> +#include <linux/rfkill.h> +#include <linux/platform_device.h> +#include <linux/input.h> +#include <linux/input/sparse-keymap.h> +#include <linux/backlight.h> +#include <linux/fb.h> +#include <linux/debugfs.h> +#include <linux/seq_file.h> +#include <linux/i8042.h> +#include <linux/dmi.h> +#include <linux/device.h> +#include <acpi/video.h> + +#define IDEAPAD_RFKILL_DEV_NUM (3) + +#define BM_CONSERVATION_BIT (5) +#define HA_FNLOCK_BIT (10) + +#define CFG_BT_BIT (16) +#define CFG_3G_BIT (17) +#define CFG_WIFI_BIT (18) +#define CFG_CAMERA_BIT (19) + +#if IS_ENABLED(CONFIG_ACPI_WMI) +static const char *const ideapad_wmi_fnesc_events[] = { + "26CAB2E5-5CF1-46AE-AAC3-4A12B6BA50E6", /* Yoga 3 */ + "56322276-8493-4CE8-A783-98C991274F5E", /* Yoga 700 */ +}; +#endif + +enum { + BMCMD_CONSERVATION_ON = 3, + BMCMD_CONSERVATION_OFF = 5, + HACMD_FNLOCK_ON = 0xe, + HACMD_FNLOCK_OFF = 0xf, +}; + +enum { + VPCCMD_R_VPC1 = 0x10, + VPCCMD_R_BL_MAX, + VPCCMD_R_BL, + VPCCMD_W_BL, + VPCCMD_R_WIFI, + VPCCMD_W_WIFI, + VPCCMD_R_BT, + VPCCMD_W_BT, + VPCCMD_R_BL_POWER, + VPCCMD_R_NOVO, + VPCCMD_R_VPC2, + VPCCMD_R_TOUCHPAD, + VPCCMD_W_TOUCHPAD, + VPCCMD_R_CAMERA, + VPCCMD_W_CAMERA, + VPCCMD_R_3G, + VPCCMD_W_3G, + VPCCMD_R_ODD, /* 0x21 */ + VPCCMD_W_FAN, + VPCCMD_R_RF, + VPCCMD_W_RF, + VPCCMD_R_FAN = 0x2B, + VPCCMD_R_SPECIAL_BUTTONS = 0x31, + VPCCMD_W_BL_POWER = 0x33, +}; + +struct ideapad_rfk_priv { + int dev; + struct ideapad_private *priv; +}; + +struct ideapad_private { + struct acpi_device *adev; + struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM]; + struct ideapad_rfk_priv rfk_priv[IDEAPAD_RFKILL_DEV_NUM]; + struct platform_device *platform_device; + struct input_dev *inputdev; + struct backlight_device *blightdev; + struct dentry *debug; + unsigned long cfg; + bool has_hw_rfkill_switch; + const char *fnesc_guid; +}; + +static bool no_bt_rfkill; +module_param(no_bt_rfkill, bool, 0444); +MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth."); + +/* + * ACPI Helpers + */ +#define IDEAPAD_EC_TIMEOUT (200) /* in ms */ + +static int read_method_int(acpi_handle handle, const char *method, int *val) +{ + acpi_status status; + unsigned long long result; + + status = acpi_evaluate_integer(handle, (char *)method, NULL, &result); + if (ACPI_FAILURE(status)) { + *val = -1; + return -1; + } + *val = result; + return 0; + +} + +static int method_gbmd(acpi_handle handle, unsigned long *ret) +{ + int result, val; + + result = read_method_int(handle, "GBMD", &val); + *ret = val; + return result; +} + +static int method_int1(acpi_handle handle, char *method, int cmd) +{ + acpi_status status; + + status = acpi_execute_simple_method(handle, method, cmd); + return ACPI_FAILURE(status) ? -1 : 0; +} + +static int method_vpcr(acpi_handle handle, int cmd, int *ret) +{ + acpi_status status; + unsigned long long result; + struct acpi_object_list params; + union acpi_object in_obj; + + params.count = 1; + params.pointer = &in_obj; + in_obj.type = ACPI_TYPE_INTEGER; + in_obj.integer.value = cmd; + + status = acpi_evaluate_integer(handle, "VPCR", ¶ms, &result); + + if (ACPI_FAILURE(status)) { + *ret = -1; + return -1; + } + *ret = result; + return 0; + +} + +static int method_vpcw(acpi_handle handle, int cmd, int data) +{ + struct acpi_object_list params; + union acpi_object in_obj[2]; + acpi_status status; + + params.count = 2; + params.pointer = in_obj; + in_obj[0].type = ACPI_TYPE_INTEGER; + in_obj[0].integer.value = cmd; + in_obj[1].type = ACPI_TYPE_INTEGER; + in_obj[1].integer.value = data; + + status = acpi_evaluate_object(handle, "VPCW", ¶ms, NULL); + if (status != AE_OK) + return -1; + return 0; +} + +static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data) +{ + int val; + unsigned long int end_jiffies; + + if (method_vpcw(handle, 1, cmd)) + return -1; + + for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1; + time_before(jiffies, end_jiffies);) { + schedule(); + if (method_vpcr(handle, 1, &val)) + return -1; + if (val == 0) { + if (method_vpcr(handle, 0, &val)) + return -1; + *data = val; + return 0; + } + } + pr_err("timeout in read_ec_cmd\n"); + return -1; +} + +static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data) +{ + int val; + unsigned long int end_jiffies; + + if (method_vpcw(handle, 0, data)) + return -1; + if (method_vpcw(handle, 1, cmd)) + return -1; + + for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1; + time_before(jiffies, end_jiffies);) { + schedule(); + if (method_vpcr(handle, 1, &val)) + return -1; + if (val == 0) + return 0; + } + pr_err("timeout in %s\n", __func__); + return -1; +} + +/* + * debugfs + */ +static int debugfs_status_show(struct seq_file *s, void *data) +{ + struct ideapad_private *priv = s->private; + unsigned long value; + + if (!priv) + return -EINVAL; + + if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &value)) + seq_printf(s, "Backlight max:\t%lu\n", value); + if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL, &value)) + seq_printf(s, "Backlight now:\t%lu\n", value); + if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &value)) + seq_printf(s, "BL power value:\t%s\n", value ? "On" : "Off"); + seq_printf(s, "=====================\n"); + + if (!read_ec_data(priv->adev->handle, VPCCMD_R_RF, &value)) + seq_printf(s, "Radio status:\t%s(%lu)\n", + value ? "On" : "Off", value); + if (!read_ec_data(priv->adev->handle, VPCCMD_R_WIFI, &value)) + seq_printf(s, "Wifi status:\t%s(%lu)\n", + value ? "On" : "Off", value); + if (!read_ec_data(priv->adev->handle, VPCCMD_R_BT, &value)) + seq_printf(s, "BT status:\t%s(%lu)\n", + value ? "On" : "Off", value); + if (!read_ec_data(priv->adev->handle, VPCCMD_R_3G, &value)) + seq_printf(s, "3G status:\t%s(%lu)\n", + value ? "On" : "Off", value); + seq_printf(s, "=====================\n"); + + if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value)) + seq_printf(s, "Touchpad status:%s(%lu)\n", + value ? "On" : "Off", value); + if (!read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &value)) + seq_printf(s, "Camera status:\t%s(%lu)\n", + value ? "On" : "Off", value); + seq_puts(s, "=====================\n"); + + if (!method_gbmd(priv->adev->handle, &value)) { + seq_printf(s, "Conservation mode:\t%s(%lu)\n", + test_bit(BM_CONSERVATION_BIT, &value) ? "On" : "Off", + value); + } + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(debugfs_status); + +static int debugfs_cfg_show(struct seq_file *s, void *data) +{ + struct ideapad_private *priv = s->private; + + if (!priv) { + seq_printf(s, "cfg: N/A\n"); + } else { + seq_printf(s, "cfg: 0x%.8lX\n\nCapability: ", + priv->cfg); + if (test_bit(CFG_BT_BIT, &priv->cfg)) + seq_printf(s, "Bluetooth "); + if (test_bit(CFG_3G_BIT, &priv->cfg)) + seq_printf(s, "3G "); + if (test_bit(CFG_WIFI_BIT, &priv->cfg)) + seq_printf(s, "Wireless "); + if (test_bit(CFG_CAMERA_BIT, &priv->cfg)) + seq_printf(s, "Camera "); + seq_printf(s, "\nGraphic: "); + switch ((priv->cfg)&0x700) { + case 0x100: + seq_printf(s, "Intel"); + break; + case 0x200: + seq_printf(s, "ATI"); + break; + case 0x300: + seq_printf(s, "Nvidia"); + break; + case 0x400: + seq_printf(s, "Intel and ATI"); + break; + case 0x500: + seq_printf(s, "Intel and Nvidia"); + break; + } + seq_printf(s, "\n"); + } + return 0; +} +DEFINE_SHOW_ATTRIBUTE(debugfs_cfg); + +static int ideapad_debugfs_init(struct ideapad_private *priv) +{ + struct dentry *node; + + priv->debug = debugfs_create_dir("ideapad", NULL); + if (priv->debug == NULL) { + pr_err("failed to create debugfs directory"); + goto errout; + } + + node = debugfs_create_file("cfg", S_IRUGO, priv->debug, priv, + &debugfs_cfg_fops); + if (!node) { + pr_err("failed to create cfg in debugfs"); + goto errout; + } + + node = debugfs_create_file("status", S_IRUGO, priv->debug, priv, + &debugfs_status_fops); + if (!node) { + pr_err("failed to create status in debugfs"); + goto errout; + } + + return 0; + +errout: + return -ENOMEM; +} + +static void ideapad_debugfs_exit(struct ideapad_private *priv) +{ + debugfs_remove_recursive(priv->debug); + priv->debug = NULL; +} + +/* + * sysfs + */ +static ssize_t show_ideapad_cam(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + unsigned long result; + struct ideapad_private *priv = dev_get_drvdata(dev); + + if (read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &result)) + return sprintf(buf, "-1\n"); + return sprintf(buf, "%lu\n", result); +} + +static ssize_t store_ideapad_cam(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int ret, state; + struct ideapad_private *priv = dev_get_drvdata(dev); + + if (!count) + return 0; + if (sscanf(buf, "%i", &state) != 1) + return -EINVAL; + ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_CAMERA, state); + if (ret < 0) + return -EIO; + return count; +} + +static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam); + +static ssize_t show_ideapad_fan(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + unsigned long result; + struct ideapad_private *priv = dev_get_drvdata(dev); + + if (read_ec_data(priv->adev->handle, VPCCMD_R_FAN, &result)) + return sprintf(buf, "-1\n"); + return sprintf(buf, "%lu\n", result); +} + +static ssize_t store_ideapad_fan(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int ret, state; + struct ideapad_private *priv = dev_get_drvdata(dev); + + if (!count) + return 0; + if (sscanf(buf, "%i", &state) != 1) + return -EINVAL; + if (state < 0 || state > 4 || state == 3) + return -EINVAL; + ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_FAN, state); + if (ret < 0) + return -EIO; + return count; +} + +static DEVICE_ATTR(fan_mode, 0644, show_ideapad_fan, store_ideapad_fan); + +static ssize_t touchpad_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct ideapad_private *priv = dev_get_drvdata(dev); + unsigned long result; + + if (read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &result)) + return sprintf(buf, "-1\n"); + return sprintf(buf, "%lu\n", result); +} + +/* Switch to RO for now: It might be revisited in the future */ +static ssize_t __maybe_unused touchpad_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct ideapad_private *priv = dev_get_drvdata(dev); + bool state; + int ret; + + ret = kstrtobool(buf, &state); + if (ret) + return ret; + + ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_TOUCHPAD, state); + if (ret < 0) + return -EIO; + return count; +} + +static DEVICE_ATTR_RO(touchpad); + +static ssize_t conservation_mode_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct ideapad_private *priv = dev_get_drvdata(dev); + unsigned long result; + + if (method_gbmd(priv->adev->handle, &result)) + return sprintf(buf, "-1\n"); + return sprintf(buf, "%u\n", test_bit(BM_CONSERVATION_BIT, &result)); +} + +static ssize_t conservation_mode_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct ideapad_private *priv = dev_get_drvdata(dev); + bool state; + int ret; + + ret = kstrtobool(buf, &state); + if (ret) + return ret; + + ret = method_int1(priv->adev->handle, "SBMC", state ? + BMCMD_CONSERVATION_ON : + BMCMD_CONSERVATION_OFF); + if (ret < 0) + return -EIO; + return count; +} + +static DEVICE_ATTR_RW(conservation_mode); + +static ssize_t fn_lock_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct ideapad_private *priv = dev_get_drvdata(dev); + unsigned long result; + int hals; + int fail = read_method_int(priv->adev->handle, "HALS", &hals); + + if (fail) + return sprintf(buf, "-1\n"); + + result = hals; + return sprintf(buf, "%u\n", test_bit(HA_FNLOCK_BIT, &result)); +} + +static ssize_t fn_lock_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct ideapad_private *priv = dev_get_drvdata(dev); + bool state; + int ret; + + ret = kstrtobool(buf, &state); + if (ret) + return ret; + + ret = method_int1(priv->adev->handle, "SALS", state ? + HACMD_FNLOCK_ON : + HACMD_FNLOCK_OFF); + if (ret < 0) + return -EIO; + return count; +} + +static DEVICE_ATTR_RW(fn_lock); + + +static struct attribute *ideapad_attributes[] = { + &dev_attr_camera_power.attr, + &dev_attr_fan_mode.attr, + &dev_attr_touchpad.attr, + &dev_attr_conservation_mode.attr, + &dev_attr_fn_lock.attr, + NULL +}; + +static umode_t ideapad_is_visible(struct kobject *kobj, + struct attribute *attr, + int idx) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct ideapad_private *priv = dev_get_drvdata(dev); + bool supported; + + if (attr == &dev_attr_camera_power.attr) + supported = test_bit(CFG_CAMERA_BIT, &(priv->cfg)); + else if (attr == &dev_attr_fan_mode.attr) { + unsigned long value; + supported = !read_ec_data(priv->adev->handle, VPCCMD_R_FAN, + &value); + } else if (attr == &dev_attr_conservation_mode.attr) { + supported = acpi_has_method(priv->adev->handle, "GBMD") && + acpi_has_method(priv->adev->handle, "SBMC"); + } else if (attr == &dev_attr_fn_lock.attr) { + supported = acpi_has_method(priv->adev->handle, "HALS") && + acpi_has_method(priv->adev->handle, "SALS"); + } else + supported = true; + + return supported ? attr->mode : 0; +} + +static const struct attribute_group ideapad_attribute_group = { + .is_visible = ideapad_is_visible, + .attrs = ideapad_attributes +}; + +/* + * Rfkill + */ +struct ideapad_rfk_data { + char *name; + int cfgbit; + int opcode; + int type; +}; + +static const struct ideapad_rfk_data ideapad_rfk_data[] = { + { "ideapad_wlan", CFG_WIFI_BIT, VPCCMD_W_WIFI, RFKILL_TYPE_WLAN }, + { "ideapad_bluetooth", CFG_BT_BIT, VPCCMD_W_BT, RFKILL_TYPE_BLUETOOTH }, + { "ideapad_3g", CFG_3G_BIT, VPCCMD_W_3G, RFKILL_TYPE_WWAN }, +}; + +static int ideapad_rfk_set(void *data, bool blocked) +{ + struct ideapad_rfk_priv *priv = data; + int opcode = ideapad_rfk_data[priv->dev].opcode; + + return write_ec_cmd(priv->priv->adev->handle, opcode, !blocked); +} + +static const struct rfkill_ops ideapad_rfk_ops = { + .set_block = ideapad_rfk_set, +}; + +static void ideapad_sync_rfk_state(struct ideapad_private *priv) +{ + unsigned long hw_blocked = 0; + int i; + + if (priv->has_hw_rfkill_switch) { + if (read_ec_data(priv->adev->handle, VPCCMD_R_RF, &hw_blocked)) + return; + hw_blocked = !hw_blocked; + } + + for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++) + if (priv->rfk[i]) + rfkill_set_hw_state(priv->rfk[i], hw_blocked); +} + +static int ideapad_register_rfkill(struct ideapad_private *priv, int dev) +{ + int ret; + unsigned long sw_blocked; + + if (no_bt_rfkill && + (ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH)) { + /* Force to enable bluetooth when no_bt_rfkill=1 */ + write_ec_cmd(priv->adev->handle, + ideapad_rfk_data[dev].opcode, 1); + return 0; + } + priv->rfk_priv[dev].dev = dev; + priv->rfk_priv[dev].priv = priv; + + priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name, + &priv->platform_device->dev, + ideapad_rfk_data[dev].type, + &ideapad_rfk_ops, + &priv->rfk_priv[dev]); + if (!priv->rfk[dev]) + return -ENOMEM; + + if (read_ec_data(priv->adev->handle, ideapad_rfk_data[dev].opcode-1, + &sw_blocked)) { + rfkill_init_sw_state(priv->rfk[dev], 0); + } else { + sw_blocked = !sw_blocked; + rfkill_init_sw_state(priv->rfk[dev], sw_blocked); + } + + ret = rfkill_register(priv->rfk[dev]); + if (ret) { + rfkill_destroy(priv->rfk[dev]); + return ret; + } + return 0; +} + +static void ideapad_unregister_rfkill(struct ideapad_private *priv, int dev) +{ + if (!priv->rfk[dev]) + return; + + rfkill_unregister(priv->rfk[dev]); + rfkill_destroy(priv->rfk[dev]); +} + +/* + * Platform device + */ +static int ideapad_sysfs_init(struct ideapad_private *priv) +{ + return sysfs_create_group(&priv->platform_device->dev.kobj, + &ideapad_attribute_group); +} + +static void ideapad_sysfs_exit(struct ideapad_private *priv) +{ + sysfs_remove_group(&priv->platform_device->dev.kobj, + &ideapad_attribute_group); +} + +/* + * input device + */ +static const struct key_entry ideapad_keymap[] = { + { KE_KEY, 6, { KEY_SWITCHVIDEOMODE } }, + { KE_KEY, 7, { KEY_CAMERA } }, + { KE_KEY, 8, { KEY_MICMUTE } }, + { KE_KEY, 11, { KEY_F16 } }, + { KE_KEY, 13, { KEY_WLAN } }, + { KE_KEY, 16, { KEY_PROG1 } }, + { KE_KEY, 17, { KEY_PROG2 } }, + { KE_KEY, 64, { KEY_PROG3 } }, + { KE_KEY, 65, { KEY_PROG4 } }, + { KE_KEY, 66, { KEY_TOUCHPAD_OFF } }, + { KE_KEY, 67, { KEY_TOUCHPAD_ON } }, + { KE_KEY, 128, { KEY_ESC } }, + + { KE_END, 0 }, +}; + +static int ideapad_input_init(struct ideapad_private *priv) +{ + struct input_dev *inputdev; + int error; + + inputdev = input_allocate_device(); + if (!inputdev) + return -ENOMEM; + + inputdev->name = "Ideapad extra buttons"; + inputdev->phys = "ideapad/input0"; + inputdev->id.bustype = BUS_HOST; + inputdev->dev.parent = &priv->platform_device->dev; + + error = sparse_keymap_setup(inputdev, ideapad_keymap, NULL); + if (error) { + pr_err("Unable to setup input device keymap\n"); + goto err_free_dev; + } + + error = input_register_device(inputdev); + if (error) { + pr_err("Unable to register input device\n"); + goto err_free_dev; + } + + priv->inputdev = inputdev; + return 0; + +err_free_dev: + input_free_device(inputdev); + return error; +} + +static void ideapad_input_exit(struct ideapad_private *priv) +{ + input_unregister_device(priv->inputdev); + priv->inputdev = NULL; +} + +static void ideapad_input_report(struct ideapad_private *priv, + unsigned long scancode) +{ + sparse_keymap_report_event(priv->inputdev, scancode, 1, true); +} + +static void ideapad_input_novokey(struct ideapad_private *priv) +{ + unsigned long long_pressed; + + if (read_ec_data(priv->adev->handle, VPCCMD_R_NOVO, &long_pressed)) + return; + if (long_pressed) + ideapad_input_report(priv, 17); + else + ideapad_input_report(priv, 16); +} + +static void ideapad_check_special_buttons(struct ideapad_private *priv) +{ + unsigned long bit, value; + + read_ec_data(priv->adev->handle, VPCCMD_R_SPECIAL_BUTTONS, &value); + + for (bit = 0; bit < 16; bit++) { + if (test_bit(bit, &value)) { + switch (bit) { + case 0: /* Z580 */ + case 6: /* Z570 */ + /* Thermal Management button */ + ideapad_input_report(priv, 65); + break; + case 1: + /* OneKey Theater button */ + ideapad_input_report(priv, 64); + break; + default: + pr_info("Unknown special button: %lu\n", bit); + break; + } + } + } +} + +/* + * backlight + */ +static int ideapad_backlight_get_brightness(struct backlight_device *blightdev) +{ + struct ideapad_private *priv = bl_get_data(blightdev); + unsigned long now; + + if (!priv) + return -EINVAL; + + if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now)) + return -EIO; + return now; +} + +static int ideapad_backlight_update_status(struct backlight_device *blightdev) +{ + struct ideapad_private *priv = bl_get_data(blightdev); + + if (!priv) + return -EINVAL; + + if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL, + blightdev->props.brightness)) + return -EIO; + if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL_POWER, + blightdev->props.power == FB_BLANK_POWERDOWN ? 0 : 1)) + return -EIO; + + return 0; +} + +static const struct backlight_ops ideapad_backlight_ops = { + .get_brightness = ideapad_backlight_get_brightness, + .update_status = ideapad_backlight_update_status, +}; + +static int ideapad_backlight_init(struct ideapad_private *priv) +{ + struct backlight_device *blightdev; + struct backlight_properties props; + unsigned long max, now, power; + + if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &max)) + return -EIO; + if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now)) + return -EIO; + if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power)) + return -EIO; + + memset(&props, 0, sizeof(struct backlight_properties)); + props.max_brightness = max; + props.type = BACKLIGHT_PLATFORM; + blightdev = backlight_device_register("ideapad", + &priv->platform_device->dev, + priv, + &ideapad_backlight_ops, + &props); + if (IS_ERR(blightdev)) { + pr_err("Could not register backlight device\n"); + return PTR_ERR(blightdev); + } + + priv->blightdev = blightdev; + blightdev->props.brightness = now; + blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; + backlight_update_status(blightdev); + + return 0; +} + +static void ideapad_backlight_exit(struct ideapad_private *priv) +{ + backlight_device_unregister(priv->blightdev); + priv->blightdev = NULL; +} + +static void ideapad_backlight_notify_power(struct ideapad_private *priv) +{ + unsigned long power; + struct backlight_device *blightdev = priv->blightdev; + + if (!blightdev) + return; + if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power)) + return; + blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; +} + +static void ideapad_backlight_notify_brightness(struct ideapad_private *priv) +{ + unsigned long now; + + /* if we control brightness via acpi video driver */ + if (priv->blightdev == NULL) { + read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now); + return; + } + + backlight_force_update(priv->blightdev, BACKLIGHT_UPDATE_HOTKEY); +} + +/* + * module init/exit + */ +static void ideapad_sync_touchpad_state(struct ideapad_private *priv) +{ + unsigned long value; + + /* Without reading from EC touchpad LED doesn't switch state */ + if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value)) { + /* Some IdeaPads don't really turn off touchpad - they only + * switch the LED state. We (de)activate KBC AUX port to turn + * touchpad off and on. We send KEY_TOUCHPAD_OFF and + * KEY_TOUCHPAD_ON to not to get out of sync with LED */ + unsigned char param; + i8042_command(¶m, value ? I8042_CMD_AUX_ENABLE : + I8042_CMD_AUX_DISABLE); + ideapad_input_report(priv, value ? 67 : 66); + } +} + +static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data) +{ + struct ideapad_private *priv = data; + unsigned long vpc1, vpc2, vpc_bit; + + if (read_ec_data(handle, VPCCMD_R_VPC1, &vpc1)) + return; + if (read_ec_data(handle, VPCCMD_R_VPC2, &vpc2)) + return; + + vpc1 = (vpc2 << 8) | vpc1; + for (vpc_bit = 0; vpc_bit < 16; vpc_bit++) { + if (test_bit(vpc_bit, &vpc1)) { + switch (vpc_bit) { + case 9: + ideapad_sync_rfk_state(priv); + break; + case 13: + case 11: + case 8: + case 7: + case 6: + ideapad_input_report(priv, vpc_bit); + break; + case 5: + ideapad_sync_touchpad_state(priv); + break; + case 4: + ideapad_backlight_notify_brightness(priv); + break; + case 3: + ideapad_input_novokey(priv); + break; + case 2: + ideapad_backlight_notify_power(priv); + break; + case 0: + ideapad_check_special_buttons(priv); + break; + case 1: + /* Some IdeaPads report event 1 every ~20 + * seconds while on battery power; some + * report this when changing to/from tablet + * mode. Squelch this event. + */ + break; + default: + pr_info("Unknown event: %lu\n", vpc_bit); + } + } + } +} + +#if IS_ENABLED(CONFIG_ACPI_WMI) +static void ideapad_wmi_notify(u32 value, void *context) +{ + switch (value) { + case 128: + ideapad_input_report(context, value); + break; + default: + pr_info("Unknown WMI event %u\n", value); + } +} +#endif + +/* + * Some ideapads don't have a hardware rfkill switch, reading VPCCMD_R_RF + * always results in 0 on these models, causing ideapad_laptop to wrongly + * report all radios as hardware-blocked. + */ +static const struct dmi_system_id no_hw_rfkill_list[] = { + { + .ident = "Lenovo RESCUER R720-15IKBN", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo R720-15IKBN"), + }, + }, + { + .ident = "Lenovo G40-30", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo G40-30"), + }, + }, + { + .ident = "Lenovo G50-30", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo G50-30"), + }, + }, + { + .ident = "Lenovo V310-14IKB", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-14IKB"), + }, + }, + { + .ident = "Lenovo V310-14ISK", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-14ISK"), + }, + }, + { + .ident = "Lenovo V310-15IKB", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-15IKB"), + }, + }, + { + .ident = "Lenovo V310-15ISK", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-15ISK"), + }, + }, + { + .ident = "Lenovo V510-15IKB", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V510-15IKB"), + }, + }, + { + .ident = "Lenovo ideapad 300-15IBR", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 300-15IBR"), + }, + }, + { + .ident = "Lenovo ideapad 300-15IKB", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 300-15IKB"), + }, + }, + { + .ident = "Lenovo ideapad 300S-11IBR", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 300S-11BR"), + }, + }, + { + .ident = "Lenovo ideapad 310-15ABR", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15ABR"), + }, + }, + { + .ident = "Lenovo ideapad 310-15IAP", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15IAP"), + }, + }, + { + .ident = "Lenovo ideapad 310-15IKB", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15IKB"), + }, + }, + { + .ident = "Lenovo ideapad 310-15ISK", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15ISK"), + }, + }, + { + .ident = "Lenovo ideapad Y700-14ISK", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-14ISK"), + }, + }, + { + .ident = "Lenovo ideapad Y700-15ACZ", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-15ACZ"), + }, + }, + { + .ident = "Lenovo ideapad Y700-15ISK", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-15ISK"), + }, + }, + { + .ident = "Lenovo ideapad Y700 Touch-15ISK", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700 Touch-15ISK"), + }, + }, + { + .ident = "Lenovo ideapad Y700-17ISK", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-17ISK"), + }, + }, + { + .ident = "Lenovo ideapad MIIX 720-12IKB", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "MIIX 720-12IKB"), + }, + }, + { + .ident = "Lenovo Legion Y520-15IKB", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y520-15IKB"), + }, + }, + { + .ident = "Lenovo Y520-15IKBM", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y520-15IKBM"), + }, + }, + { + .ident = "Lenovo Legion Y720-15IKB", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y720-15IKB"), + }, + }, + { + .ident = "Lenovo Legion Y720-15IKBN", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y720-15IKBN"), + }, + }, + { + .ident = "Lenovo Y720-15IKBM", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y720-15IKBM"), + }, + }, + { + .ident = "Lenovo Yoga 2 11 / 13 / Pro", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 2"), + }, + }, + { + .ident = "Lenovo Yoga 2 11 / 13 / Pro", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_BOARD_NAME, "Yoga2"), + }, + }, + { + .ident = "Lenovo Yoga 3 1170 / 1470", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 3"), + }, + }, + { + .ident = "Lenovo Yoga 3 Pro 1370", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 3"), + }, + }, + { + .ident = "Lenovo Yoga 700", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 700"), + }, + }, + { + .ident = "Lenovo Yoga 900", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 900"), + }, + }, + { + .ident = "Lenovo Yoga 900", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_BOARD_NAME, "VIUU4"), + }, + }, + { + .ident = "Lenovo YOGA 910-13IKB", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 910-13IKB"), + }, + }, + { + .ident = "Lenovo YOGA 920-13IKB", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 920-13IKB"), + }, + }, + { + .ident = "Lenovo Zhaoyang E42-80", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "ZHAOYANG E42-80"), + }, + }, + {} +}; + +static int ideapad_acpi_add(struct platform_device *pdev) +{ + int ret, i; + int cfg; + struct ideapad_private *priv; + struct acpi_device *adev; + + ret = acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev); + if (ret) + return -ENODEV; + + if (read_method_int(adev->handle, "_CFG", &cfg)) + return -ENODEV; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + dev_set_drvdata(&pdev->dev, priv); + priv->cfg = cfg; + priv->adev = adev; + priv->platform_device = pdev; + priv->has_hw_rfkill_switch = !dmi_check_system(no_hw_rfkill_list); + + ret = ideapad_sysfs_init(priv); + if (ret) + return ret; + + ret = ideapad_debugfs_init(priv); + if (ret) + goto debugfs_failed; + + ret = ideapad_input_init(priv); + if (ret) + goto input_failed; + + /* + * On some models without a hw-switch (the yoga 2 13 at least) + * VPCCMD_W_RF must be explicitly set to 1 for the wifi to work. + */ + if (!priv->has_hw_rfkill_switch) + write_ec_cmd(priv->adev->handle, VPCCMD_W_RF, 1); + + for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++) + if (test_bit(ideapad_rfk_data[i].cfgbit, &priv->cfg)) + ideapad_register_rfkill(priv, i); + + ideapad_sync_rfk_state(priv); + ideapad_sync_touchpad_state(priv); + + if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { + ret = ideapad_backlight_init(priv); + if (ret && ret != -ENODEV) + goto backlight_failed; + } + ret = acpi_install_notify_handler(adev->handle, + ACPI_DEVICE_NOTIFY, ideapad_acpi_notify, priv); + if (ret) + goto notification_failed; + +#if IS_ENABLED(CONFIG_ACPI_WMI) + for (i = 0; i < ARRAY_SIZE(ideapad_wmi_fnesc_events); i++) { + ret = wmi_install_notify_handler(ideapad_wmi_fnesc_events[i], + ideapad_wmi_notify, priv); + if (ret == AE_OK) { + priv->fnesc_guid = ideapad_wmi_fnesc_events[i]; + break; + } + } + if (ret != AE_OK && ret != AE_NOT_EXIST) + goto notification_failed_wmi; +#endif + + return 0; +#if IS_ENABLED(CONFIG_ACPI_WMI) +notification_failed_wmi: + acpi_remove_notify_handler(priv->adev->handle, + ACPI_DEVICE_NOTIFY, ideapad_acpi_notify); +#endif +notification_failed: + ideapad_backlight_exit(priv); +backlight_failed: + for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++) + ideapad_unregister_rfkill(priv, i); + ideapad_input_exit(priv); +input_failed: + ideapad_debugfs_exit(priv); +debugfs_failed: + ideapad_sysfs_exit(priv); + return ret; +} + +static int ideapad_acpi_remove(struct platform_device *pdev) +{ + struct ideapad_private *priv = dev_get_drvdata(&pdev->dev); + int i; + +#if IS_ENABLED(CONFIG_ACPI_WMI) + if (priv->fnesc_guid) + wmi_remove_notify_handler(priv->fnesc_guid); +#endif + acpi_remove_notify_handler(priv->adev->handle, + ACPI_DEVICE_NOTIFY, ideapad_acpi_notify); + ideapad_backlight_exit(priv); + for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++) + ideapad_unregister_rfkill(priv, i); + ideapad_input_exit(priv); + ideapad_debugfs_exit(priv); + ideapad_sysfs_exit(priv); + dev_set_drvdata(&pdev->dev, NULL); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int ideapad_acpi_resume(struct device *device) +{ + struct ideapad_private *priv; + + if (!device) + return -EINVAL; + priv = dev_get_drvdata(device); + + ideapad_sync_rfk_state(priv); + ideapad_sync_touchpad_state(priv); + return 0; +} +#endif +static SIMPLE_DEV_PM_OPS(ideapad_pm, NULL, ideapad_acpi_resume); + +static const struct acpi_device_id ideapad_device_ids[] = { + { "VPC2004", 0}, + { "", 0}, +}; +MODULE_DEVICE_TABLE(acpi, ideapad_device_ids); + +static struct platform_driver ideapad_acpi_driver = { + .probe = ideapad_acpi_add, + .remove = ideapad_acpi_remove, + .driver = { + .name = "ideapad_acpi", + .pm = &ideapad_pm, + .acpi_match_table = ACPI_PTR(ideapad_device_ids), + }, +}; + +module_platform_driver(ideapad_acpi_driver); + +MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>"); +MODULE_DESCRIPTION("IdeaPad ACPI Extras"); +MODULE_LICENSE("GPL"); |