1116 строки
27 KiB
C
1116 строки
27 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* ideapad-laptop.c - Lenovo IdeaPad ACPI Extras
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*
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* Copyright © 2010 Intel Corporation
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* Copyright © 2010 David Woodhouse <dwmw2@infradead.org>
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/acpi.h>
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#include <linux/rfkill.h>
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#include <linux/platform_device.h>
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#include <linux/input.h>
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#include <linux/input/sparse-keymap.h>
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#include <linux/backlight.h>
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#include <linux/fb.h>
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <linux/i8042.h>
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#include <linux/dmi.h>
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#include <linux/device.h>
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#include <acpi/video.h>
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#define IDEAPAD_RFKILL_DEV_NUM (3)
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#define BM_CONSERVATION_BIT (5)
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#define HA_FNLOCK_BIT (10)
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#define CFG_BT_BIT (16)
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#define CFG_3G_BIT (17)
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#define CFG_WIFI_BIT (18)
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#define CFG_CAMERA_BIT (19)
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#if IS_ENABLED(CONFIG_ACPI_WMI)
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static const char *const ideapad_wmi_fnesc_events[] = {
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"26CAB2E5-5CF1-46AE-AAC3-4A12B6BA50E6", /* Yoga 3 */
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"56322276-8493-4CE8-A783-98C991274F5E", /* Yoga 700 */
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};
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#endif
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enum {
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BMCMD_CONSERVATION_ON = 3,
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BMCMD_CONSERVATION_OFF = 5,
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HACMD_FNLOCK_ON = 0xe,
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HACMD_FNLOCK_OFF = 0xf,
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};
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enum {
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VPCCMD_R_VPC1 = 0x10,
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VPCCMD_R_BL_MAX,
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VPCCMD_R_BL,
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VPCCMD_W_BL,
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VPCCMD_R_WIFI,
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VPCCMD_W_WIFI,
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VPCCMD_R_BT,
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VPCCMD_W_BT,
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VPCCMD_R_BL_POWER,
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VPCCMD_R_NOVO,
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VPCCMD_R_VPC2,
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VPCCMD_R_TOUCHPAD,
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VPCCMD_W_TOUCHPAD,
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VPCCMD_R_CAMERA,
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VPCCMD_W_CAMERA,
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VPCCMD_R_3G,
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VPCCMD_W_3G,
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VPCCMD_R_ODD, /* 0x21 */
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VPCCMD_W_FAN,
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VPCCMD_R_RF,
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VPCCMD_W_RF,
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VPCCMD_R_FAN = 0x2B,
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VPCCMD_R_SPECIAL_BUTTONS = 0x31,
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VPCCMD_W_BL_POWER = 0x33,
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};
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struct ideapad_rfk_priv {
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int dev;
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struct ideapad_private *priv;
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};
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struct ideapad_private {
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struct acpi_device *adev;
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struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
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struct ideapad_rfk_priv rfk_priv[IDEAPAD_RFKILL_DEV_NUM];
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struct platform_device *platform_device;
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struct input_dev *inputdev;
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struct backlight_device *blightdev;
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struct dentry *debug;
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unsigned long cfg;
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bool has_hw_rfkill_switch;
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const char *fnesc_guid;
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};
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static bool no_bt_rfkill;
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module_param(no_bt_rfkill, bool, 0444);
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MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
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/*
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* ACPI Helpers
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*/
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#define IDEAPAD_EC_TIMEOUT (200) /* in ms */
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static int read_method_int(acpi_handle handle, const char *method, int *val)
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{
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acpi_status status;
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unsigned long long result;
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status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
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if (ACPI_FAILURE(status)) {
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*val = -1;
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return -1;
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}
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*val = result;
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return 0;
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}
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static int method_gbmd(acpi_handle handle, unsigned long *ret)
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{
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int result, val;
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result = read_method_int(handle, "GBMD", &val);
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*ret = val;
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return result;
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}
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static int method_int1(acpi_handle handle, char *method, int cmd)
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{
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acpi_status status;
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status = acpi_execute_simple_method(handle, method, cmd);
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return ACPI_FAILURE(status) ? -1 : 0;
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}
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static int method_vpcr(acpi_handle handle, int cmd, int *ret)
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{
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acpi_status status;
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unsigned long long result;
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struct acpi_object_list params;
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union acpi_object in_obj;
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params.count = 1;
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params.pointer = &in_obj;
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in_obj.type = ACPI_TYPE_INTEGER;
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in_obj.integer.value = cmd;
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status = acpi_evaluate_integer(handle, "VPCR", ¶ms, &result);
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if (ACPI_FAILURE(status)) {
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*ret = -1;
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return -1;
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}
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*ret = result;
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return 0;
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}
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static int method_vpcw(acpi_handle handle, int cmd, int data)
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{
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struct acpi_object_list params;
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union acpi_object in_obj[2];
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acpi_status status;
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params.count = 2;
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params.pointer = in_obj;
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in_obj[0].type = ACPI_TYPE_INTEGER;
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in_obj[0].integer.value = cmd;
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in_obj[1].type = ACPI_TYPE_INTEGER;
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in_obj[1].integer.value = data;
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status = acpi_evaluate_object(handle, "VPCW", ¶ms, NULL);
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if (status != AE_OK)
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return -1;
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return 0;
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}
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static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data)
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{
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int val;
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unsigned long int end_jiffies;
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if (method_vpcw(handle, 1, cmd))
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return -1;
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for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
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time_before(jiffies, end_jiffies);) {
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schedule();
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if (method_vpcr(handle, 1, &val))
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return -1;
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if (val == 0) {
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if (method_vpcr(handle, 0, &val))
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return -1;
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*data = val;
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return 0;
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}
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}
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pr_err("timeout in %s\n", __func__);
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return -1;
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}
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static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
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{
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int val;
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unsigned long int end_jiffies;
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if (method_vpcw(handle, 0, data))
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return -1;
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if (method_vpcw(handle, 1, cmd))
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return -1;
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for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
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time_before(jiffies, end_jiffies);) {
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schedule();
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if (method_vpcr(handle, 1, &val))
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return -1;
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if (val == 0)
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return 0;
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}
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pr_err("timeout in %s\n", __func__);
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return -1;
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}
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/*
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* debugfs
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*/
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static int debugfs_status_show(struct seq_file *s, void *data)
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{
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struct ideapad_private *priv = s->private;
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unsigned long value;
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if (!priv)
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return -EINVAL;
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if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &value))
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seq_printf(s, "Backlight max:\t%lu\n", value);
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if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL, &value))
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seq_printf(s, "Backlight now:\t%lu\n", value);
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if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &value))
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seq_printf(s, "BL power value:\t%s\n", value ? "On" : "Off");
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seq_printf(s, "=====================\n");
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if (!read_ec_data(priv->adev->handle, VPCCMD_R_RF, &value))
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seq_printf(s, "Radio status:\t%s(%lu)\n",
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value ? "On" : "Off", value);
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if (!read_ec_data(priv->adev->handle, VPCCMD_R_WIFI, &value))
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seq_printf(s, "Wifi status:\t%s(%lu)\n",
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value ? "On" : "Off", value);
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if (!read_ec_data(priv->adev->handle, VPCCMD_R_BT, &value))
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seq_printf(s, "BT status:\t%s(%lu)\n",
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value ? "On" : "Off", value);
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if (!read_ec_data(priv->adev->handle, VPCCMD_R_3G, &value))
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seq_printf(s, "3G status:\t%s(%lu)\n",
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value ? "On" : "Off", value);
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seq_printf(s, "=====================\n");
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if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value))
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seq_printf(s, "Touchpad status:%s(%lu)\n",
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value ? "On" : "Off", value);
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if (!read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &value))
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seq_printf(s, "Camera status:\t%s(%lu)\n",
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value ? "On" : "Off", value);
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seq_puts(s, "=====================\n");
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if (!method_gbmd(priv->adev->handle, &value)) {
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seq_printf(s, "Conservation mode:\t%s(%lu)\n",
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test_bit(BM_CONSERVATION_BIT, &value) ? "On" : "Off",
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value);
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}
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(debugfs_status);
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static int debugfs_cfg_show(struct seq_file *s, void *data)
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{
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struct ideapad_private *priv = s->private;
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if (!priv) {
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seq_printf(s, "cfg: N/A\n");
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} else {
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seq_printf(s, "cfg: 0x%.8lX\n\nCapability: ",
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priv->cfg);
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if (test_bit(CFG_BT_BIT, &priv->cfg))
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seq_printf(s, "Bluetooth ");
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if (test_bit(CFG_3G_BIT, &priv->cfg))
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seq_printf(s, "3G ");
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if (test_bit(CFG_WIFI_BIT, &priv->cfg))
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seq_printf(s, "Wireless ");
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if (test_bit(CFG_CAMERA_BIT, &priv->cfg))
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seq_printf(s, "Camera ");
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seq_printf(s, "\nGraphic: ");
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switch ((priv->cfg)&0x700) {
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case 0x100:
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seq_printf(s, "Intel");
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break;
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case 0x200:
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seq_printf(s, "ATI");
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break;
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case 0x300:
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seq_printf(s, "Nvidia");
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break;
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case 0x400:
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seq_printf(s, "Intel and ATI");
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break;
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case 0x500:
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seq_printf(s, "Intel and Nvidia");
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break;
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}
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seq_printf(s, "\n");
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}
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(debugfs_cfg);
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static void ideapad_debugfs_init(struct ideapad_private *priv)
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{
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struct dentry *dir;
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dir = debugfs_create_dir("ideapad", NULL);
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priv->debug = dir;
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debugfs_create_file("cfg", S_IRUGO, dir, priv, &debugfs_cfg_fops);
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debugfs_create_file("status", S_IRUGO, dir, priv, &debugfs_status_fops);
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}
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static void ideapad_debugfs_exit(struct ideapad_private *priv)
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{
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debugfs_remove_recursive(priv->debug);
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priv->debug = NULL;
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}
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/*
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* sysfs
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*/
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static ssize_t show_ideapad_cam(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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unsigned long result;
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struct ideapad_private *priv = dev_get_drvdata(dev);
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if (read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &result))
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return sprintf(buf, "-1\n");
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return sprintf(buf, "%lu\n", result);
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}
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static ssize_t store_ideapad_cam(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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int ret, state;
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struct ideapad_private *priv = dev_get_drvdata(dev);
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if (!count)
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return 0;
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if (sscanf(buf, "%i", &state) != 1)
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return -EINVAL;
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ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_CAMERA, state);
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if (ret < 0)
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return -EIO;
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return count;
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}
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static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);
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static ssize_t show_ideapad_fan(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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unsigned long result;
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struct ideapad_private *priv = dev_get_drvdata(dev);
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if (read_ec_data(priv->adev->handle, VPCCMD_R_FAN, &result))
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return sprintf(buf, "-1\n");
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return sprintf(buf, "%lu\n", result);
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}
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static ssize_t store_ideapad_fan(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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int ret, state;
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struct ideapad_private *priv = dev_get_drvdata(dev);
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if (!count)
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return 0;
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if (sscanf(buf, "%i", &state) != 1)
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return -EINVAL;
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if (state < 0 || state > 4 || state == 3)
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return -EINVAL;
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ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_FAN, state);
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if (ret < 0)
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return -EIO;
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return count;
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}
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static DEVICE_ATTR(fan_mode, 0644, show_ideapad_fan, store_ideapad_fan);
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static ssize_t touchpad_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct ideapad_private *priv = dev_get_drvdata(dev);
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unsigned long result;
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if (read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &result))
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return sprintf(buf, "-1\n");
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return sprintf(buf, "%lu\n", result);
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}
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/* Switch to RO for now: It might be revisited in the future */
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static ssize_t __maybe_unused touchpad_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct ideapad_private *priv = dev_get_drvdata(dev);
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bool state;
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int ret;
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ret = kstrtobool(buf, &state);
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if (ret)
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return ret;
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ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_TOUCHPAD, state);
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if (ret < 0)
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return -EIO;
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return count;
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}
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static DEVICE_ATTR_RO(touchpad);
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static ssize_t conservation_mode_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct ideapad_private *priv = dev_get_drvdata(dev);
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unsigned long result;
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if (method_gbmd(priv->adev->handle, &result))
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return sprintf(buf, "-1\n");
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return sprintf(buf, "%u\n", test_bit(BM_CONSERVATION_BIT, &result));
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}
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static ssize_t conservation_mode_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct ideapad_private *priv = dev_get_drvdata(dev);
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bool state;
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int ret;
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ret = kstrtobool(buf, &state);
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if (ret)
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return ret;
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ret = method_int1(priv->adev->handle, "SBMC", state ?
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BMCMD_CONSERVATION_ON :
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BMCMD_CONSERVATION_OFF);
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if (ret < 0)
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return -EIO;
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return count;
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}
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static DEVICE_ATTR_RW(conservation_mode);
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static ssize_t fn_lock_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct ideapad_private *priv = dev_get_drvdata(dev);
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unsigned long result;
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int hals;
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int fail = read_method_int(priv->adev->handle, "HALS", &hals);
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if (fail)
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return sprintf(buf, "-1\n");
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result = hals;
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return sprintf(buf, "%u\n", test_bit(HA_FNLOCK_BIT, &result));
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}
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static ssize_t fn_lock_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct ideapad_private *priv = dev_get_drvdata(dev);
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bool state;
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int ret;
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ret = kstrtobool(buf, &state);
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if (ret)
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return ret;
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ret = method_int1(priv->adev->handle, "SALS", state ?
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HACMD_FNLOCK_ON :
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HACMD_FNLOCK_OFF);
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if (ret < 0)
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return -EIO;
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return count;
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}
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static DEVICE_ATTR_RW(fn_lock);
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|
|
|
|
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 have a hardware rfkill switch, but most do not have one.
|
|
* Reading VPCCMD_R_RF always results in 0 on models without a hardware rfkill,
|
|
* switch causing ideapad_laptop to wrongly report all radios as hw-blocked.
|
|
* There used to be a long list of DMI ids for models without a hw rfkill
|
|
* switch here, but that resulted in playing whack a mole.
|
|
* More importantly wrongly reporting the wifi radio as hw-blocked, results in
|
|
* non working wifi. Whereas not reporting it hw-blocked, when it actually is
|
|
* hw-blocked results in an empty SSID list, which is a much more benign
|
|
* failure mode.
|
|
* So the default now is the much safer option of assuming there is no
|
|
* hardware rfkill switch. This default also actually matches most hardware,
|
|
* since having a hw rfkill switch is quite rare on modern hardware, so this
|
|
* also leads to a much shorter list.
|
|
*/
|
|
static const struct dmi_system_id hw_rfkill_list[] = {
|
|
{}
|
|
};
|
|
|
|
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(hw_rfkill_list);
|
|
|
|
ret = ideapad_sysfs_init(priv);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ideapad_debugfs_init(priv);
|
|
|
|
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);
|
|
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");
|