From f70575805708cabdedea7498aaa3f710fde4d920 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 03:29:01 +0000
Subject: [PATCH] add lvds1024*800
---
kernel/drivers/acpi/button.c | 144 ++++++++++++++++++++---------------------------
1 files changed, 62 insertions(+), 82 deletions(-)
diff --git a/kernel/drivers/acpi/button.c b/kernel/drivers/acpi/button.c
index abf1014..4861aad 100644
--- a/kernel/drivers/acpi/button.c
+++ b/kernel/drivers/acpi/button.c
@@ -1,22 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* button.c - ACPI Button Driver
*
* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#define pr_fmt(fmt) "ACPI: button: " fmt
@@ -37,29 +24,35 @@
#define PREFIX "ACPI: "
#define ACPI_BUTTON_CLASS "button"
-#define ACPI_BUTTON_FILE_INFO "info"
#define ACPI_BUTTON_FILE_STATE "state"
#define ACPI_BUTTON_TYPE_UNKNOWN 0x00
#define ACPI_BUTTON_NOTIFY_STATUS 0x80
#define ACPI_BUTTON_SUBCLASS_POWER "power"
-#define ACPI_BUTTON_HID_POWER "PNP0C0C"
#define ACPI_BUTTON_DEVICE_NAME_POWER "Power Button"
#define ACPI_BUTTON_TYPE_POWER 0x01
#define ACPI_BUTTON_SUBCLASS_SLEEP "sleep"
-#define ACPI_BUTTON_HID_SLEEP "PNP0C0E"
#define ACPI_BUTTON_DEVICE_NAME_SLEEP "Sleep Button"
#define ACPI_BUTTON_TYPE_SLEEP 0x03
#define ACPI_BUTTON_SUBCLASS_LID "lid"
-#define ACPI_BUTTON_HID_LID "PNP0C0D"
#define ACPI_BUTTON_DEVICE_NAME_LID "Lid Switch"
#define ACPI_BUTTON_TYPE_LID 0x05
-#define ACPI_BUTTON_LID_INIT_IGNORE 0x00
-#define ACPI_BUTTON_LID_INIT_OPEN 0x01
-#define ACPI_BUTTON_LID_INIT_METHOD 0x02
+enum {
+ ACPI_BUTTON_LID_INIT_IGNORE,
+ ACPI_BUTTON_LID_INIT_OPEN,
+ ACPI_BUTTON_LID_INIT_METHOD,
+ ACPI_BUTTON_LID_INIT_DISABLED,
+};
+
+static const char * const lid_init_state_str[] = {
+ [ACPI_BUTTON_LID_INIT_IGNORE] = "ignore",
+ [ACPI_BUTTON_LID_INIT_OPEN] = "open",
+ [ACPI_BUTTON_LID_INIT_METHOD] = "method",
+ [ACPI_BUTTON_LID_INIT_DISABLED] = "disabled",
+};
#define _COMPONENT ACPI_BUTTON_COMPONENT
ACPI_MODULE_NAME("button");
@@ -78,18 +71,25 @@
};
MODULE_DEVICE_TABLE(acpi, button_device_ids);
-/*
- * Some devices which don't even have a lid in anyway have a broken _LID
- * method (e.g. pointing to a floating gpio pin) causing spurious LID events.
- */
-static const struct dmi_system_id lid_blacklst[] = {
+/* Please keep this list sorted alphabetically by vendor and model */
+static const struct dmi_system_id dmi_lid_quirks[] = {
{
- /* GP-electronic T701 */
+ /* GP-electronic T701, _LID method points to a floating GPIO */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
DMI_MATCH(DMI_PRODUCT_NAME, "T701"),
DMI_MATCH(DMI_BIOS_VERSION, "BYT70A.YNCHENG.WIN.007"),
},
+ .driver_data = (void *)(long)ACPI_BUTTON_LID_INIT_DISABLED,
+ },
+ {
+ /* Nextbook Ares 8A tablet, _LID device always reports lid closed */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "CherryTrail"),
+ DMI_MATCH(DMI_BIOS_VERSION, "M882"),
+ },
+ .driver_data = (void *)(long)ACPI_BUTTON_LID_INIT_DISABLED,
},
{
/*
@@ -163,9 +163,8 @@
bool lid_state_initialized;
};
-static BLOCKING_NOTIFIER_HEAD(acpi_lid_notifier);
static struct acpi_device *lid_device;
-static u8 lid_init_state = ACPI_BUTTON_LID_INIT_METHOD;
+static long lid_init_state = -1;
static unsigned long lid_report_interval __read_mostly = 500;
module_param(lid_report_interval, ulong, 0644);
@@ -193,7 +192,6 @@
static int acpi_lid_notify_state(struct acpi_device *device, int state)
{
struct acpi_button *button = acpi_driver_data(device);
- int ret;
ktime_t next_report;
bool do_update;
@@ -270,18 +268,7 @@
button->last_time = ktime_get();
}
- ret = blocking_notifier_call_chain(&acpi_lid_notifier, state, device);
- if (ret == NOTIFY_DONE)
- ret = blocking_notifier_call_chain(&acpi_lid_notifier, state,
- device);
- if (ret == NOTIFY_DONE || ret == NOTIFY_OK) {
- /*
- * It is also regarded as success if the notifier_chain
- * returns NOTIFY_OK or NOTIFY_DONE.
- */
- ret = 0;
- }
- return ret;
+ return 0;
}
static int __maybe_unused acpi_button_state_seq_show(struct seq_file *seq,
@@ -378,18 +365,6 @@
/* --------------------------------------------------------------------------
Driver Interface
-------------------------------------------------------------------------- */
-int acpi_lid_notifier_register(struct notifier_block *nb)
-{
- return blocking_notifier_chain_register(&acpi_lid_notifier, nb);
-}
-EXPORT_SYMBOL(acpi_lid_notifier_register);
-
-int acpi_lid_notifier_unregister(struct notifier_block *nb)
-{
- return blocking_notifier_chain_unregister(&acpi_lid_notifier, nb);
-}
-EXPORT_SYMBOL(acpi_lid_notifier_unregister);
-
int acpi_lid_open(void)
{
if (!lid_device)
@@ -441,7 +416,7 @@
switch (event) {
case ACPI_FIXED_HARDWARE_EVENT:
event = ACPI_BUTTON_NOTIFY_STATUS;
- /* fall through */
+ fallthrough;
case ACPI_BUTTON_NOTIFY_STATUS:
input = button->input;
if (button->type == ACPI_BUTTON_TYPE_LID) {
@@ -519,7 +494,8 @@
char *name, *class;
int error;
- if (!strcmp(hid, ACPI_BUTTON_HID_LID) && dmi_check_system(lid_blacklst))
+ if (!strcmp(hid, ACPI_BUTTON_HID_LID) &&
+ lid_init_state == ACPI_BUTTON_LID_INIT_DISABLED)
return -ENODEV;
button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL);
@@ -625,36 +601,30 @@
static int param_set_lid_init_state(const char *val,
const struct kernel_param *kp)
{
- int result = 0;
+ int i;
- if (!strncmp(val, "open", sizeof("open") - 1)) {
- lid_init_state = ACPI_BUTTON_LID_INIT_OPEN;
- pr_info("Notify initial lid state as open\n");
- } else if (!strncmp(val, "method", sizeof("method") - 1)) {
- lid_init_state = ACPI_BUTTON_LID_INIT_METHOD;
- pr_info("Notify initial lid state with _LID return value\n");
- } else if (!strncmp(val, "ignore", sizeof("ignore") - 1)) {
- lid_init_state = ACPI_BUTTON_LID_INIT_IGNORE;
- pr_info("Do not notify initial lid state\n");
- } else
- result = -EINVAL;
- return result;
+ i = sysfs_match_string(lid_init_state_str, val);
+ if (i < 0)
+ return i;
+
+ lid_init_state = i;
+ pr_info("Initial lid state set to '%s'\n", lid_init_state_str[i]);
+ return 0;
}
-static int param_get_lid_init_state(char *buffer,
- const struct kernel_param *kp)
+static int param_get_lid_init_state(char *buf, const struct kernel_param *kp)
{
- switch (lid_init_state) {
- case ACPI_BUTTON_LID_INIT_OPEN:
- return sprintf(buffer, "open");
- case ACPI_BUTTON_LID_INIT_METHOD:
- return sprintf(buffer, "method");
- case ACPI_BUTTON_LID_INIT_IGNORE:
- return sprintf(buffer, "ignore");
- default:
- return sprintf(buffer, "invalid");
- }
- return 0;
+ int i, c = 0;
+
+ for (i = 0; i < ARRAY_SIZE(lid_init_state_str); i++)
+ if (i == lid_init_state)
+ c += sprintf(buf + c, "[%s] ", lid_init_state_str[i]);
+ else
+ c += sprintf(buf + c, "%s ", lid_init_state_str[i]);
+
+ buf[c - 1] = '\n'; /* Replace the final space with a newline */
+
+ return c;
}
module_param_call(lid_init_state,
@@ -664,6 +634,16 @@
static int acpi_button_register_driver(struct acpi_driver *driver)
{
+ const struct dmi_system_id *dmi_id;
+
+ if (lid_init_state == -1) {
+ dmi_id = dmi_first_match(dmi_lid_quirks);
+ if (dmi_id)
+ lid_init_state = (long)dmi_id->driver_data;
+ else
+ lid_init_state = ACPI_BUTTON_LID_INIT_METHOD;
+ }
+
/*
* Modules such as nouveau.ko and i915.ko have a link time dependency
* on acpi_lid_open(), and would therefore not be loadable on ACPI
--
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