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![Greg Kroah-Hartman](/assets/img/avatar_default.png)
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Ike Panhc <ike.pan@canonical.com> Cc: Darren Hart <dvhart@infradead.org> Cc: Andy Shevchenko <andy@infradead.org> Cc: platform-driver-x86@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
1129 lines
28 KiB
C
1129 lines
28 KiB
C
/*
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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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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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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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{
|
|
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 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");
|