Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
index 53dfe67..5ea8da5 100644
--- a/drivers/platform/x86/acerhdf.c
+++ b/drivers/platform/x86/acerhdf.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* acerhdf - A driver which monitors the temperature
* of the aspire one netbook, turns on/off the fan
@@ -15,20 +16,6 @@
* o lkml - Matthew Garrett
* - Borislav Petkov
* - Andreas Mohr
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define pr_fmt(fmt) "acerhdf: " fmt
@@ -86,6 +73,7 @@
static unsigned int fanon = 60000;
static unsigned int fanoff = 53000;
static unsigned int verbose;
+static unsigned int list_supported;
static unsigned int fanstate = ACERHDF_FAN_AUTO;
static char force_bios[16];
static char force_product[16];
@@ -104,10 +92,12 @@
MODULE_PARM_DESC(fanoff, "Turn the fan off below this temperature");
module_param(verbose, uint, 0600);
MODULE_PARM_DESC(verbose, "Enable verbose dmesg output");
+module_param(list_supported, uint, 0600);
+MODULE_PARM_DESC(list_supported, "List supported models and BIOS versions");
module_param_string(force_bios, force_bios, 16, 0);
-MODULE_PARM_DESC(force_bios, "Force BIOS version and omit BIOS check");
+MODULE_PARM_DESC(force_bios, "Pretend system has this known supported BIOS version");
module_param_string(force_product, force_product, 16, 0);
-MODULE_PARM_DESC(force_product, "Force BIOS product and omit BIOS check");
+MODULE_PARM_DESC(force_product, "Pretend system is this known supported model");
/*
* cmd_off: to switch the fan completely off and check if the fan is off
@@ -130,7 +120,7 @@
.moff = 0xff,
};
-/* BIOS settings */
+/* BIOS settings - only used during probe */
struct bios_settings {
const char *vendor;
const char *product;
@@ -141,8 +131,18 @@
int mcmd_enable;
};
+/* This could be a daughter struct in the above, but not worth the redirect */
+struct ctrl_settings {
+ u8 fanreg;
+ u8 tempreg;
+ struct fancmd cmd;
+ int mcmd_enable;
+};
+
+static struct ctrl_settings ctrl_cfg __read_mostly;
+
/* Register addresses and values for different BIOS versions */
-static const struct bios_settings bios_tbl[] = {
+static const struct bios_settings bios_tbl[] __initconst = {
/* AOA110 */
{"Acer", "AOA110", "v0.3109", 0x55, 0x58, {0x1f, 0x00}, 0},
{"Acer", "AOA110", "v0.3114", 0x55, 0x58, {0x1f, 0x00}, 0},
@@ -257,8 +257,6 @@
{"", "", "", 0, 0, {0, 0}, 0}
};
-static const struct bios_settings *bios_cfg __read_mostly;
-
/*
* this struct is used to instruct thermal layer to use bang_bang instead of
* default governor for acerhdf
@@ -271,7 +269,7 @@
{
u8 read_temp;
- if (ec_read(bios_cfg->tempreg, &read_temp))
+ if (ec_read(ctrl_cfg.tempreg, &read_temp))
return -EINVAL;
*temp = read_temp * 1000;
@@ -283,10 +281,10 @@
{
u8 fan;
- if (ec_read(bios_cfg->fanreg, &fan))
+ if (ec_read(ctrl_cfg.fanreg, &fan))
return -EINVAL;
- if (fan != bios_cfg->cmd.cmd_off)
+ if (fan != ctrl_cfg.cmd.cmd_off)
*state = ACERHDF_FAN_AUTO;
else
*state = ACERHDF_FAN_OFF;
@@ -307,13 +305,13 @@
state = ACERHDF_FAN_AUTO;
}
- cmd = (state == ACERHDF_FAN_OFF) ? bios_cfg->cmd.cmd_off
- : bios_cfg->cmd.cmd_auto;
+ cmd = (state == ACERHDF_FAN_OFF) ? ctrl_cfg.cmd.cmd_off
+ : ctrl_cfg.cmd.cmd_auto;
fanstate = state;
- ec_write(bios_cfg->fanreg, cmd);
+ ec_write(ctrl_cfg.fanreg, cmd);
- if (bios_cfg->mcmd_enable && state == ACERHDF_FAN_OFF) {
+ if (ctrl_cfg.mcmd_enable && state == ACERHDF_FAN_OFF) {
if (verbose)
pr_notice("turning off fan manually\n");
ec_write(mcmd.mreg, mcmd.moff);
@@ -616,10 +614,11 @@
}
/* check hardware */
-static int acerhdf_check_hardware(void)
+static int __init acerhdf_check_hardware(void)
{
char const *vendor, *version, *product;
const struct bios_settings *bt = NULL;
+ int found = 0;
/* get BIOS data */
vendor = dmi_get_system_info(DMI_SYS_VENDOR);
@@ -633,6 +632,17 @@
pr_info("Acer Aspire One Fan driver, v.%s\n", DRV_VER);
+ if (list_supported) {
+ pr_info("List of supported Manufacturer/Model/BIOS:\n");
+ pr_info("---------------------------------------------------\n");
+ for (bt = bios_tbl; bt->vendor[0]; bt++) {
+ pr_info("%-13s | %-17s | %-10s\n", bt->vendor,
+ bt->product, bt->version);
+ }
+ pr_info("---------------------------------------------------\n");
+ return -ECANCELED;
+ }
+
if (force_bios[0]) {
version = force_bios;
pr_info("forcing BIOS version: %s\n", version);
@@ -658,30 +668,36 @@
if (str_starts_with(vendor, bt->vendor) &&
str_starts_with(product, bt->product) &&
str_starts_with(version, bt->version)) {
- bios_cfg = bt;
+ found = 1;
break;
}
}
- if (!bios_cfg) {
+ if (!found) {
pr_err("unknown (unsupported) BIOS version %s/%s/%s, please report, aborting!\n",
vendor, product, version);
return -EINVAL;
}
+ /* Copy control settings from BIOS table before we free it. */
+ ctrl_cfg.fanreg = bt->fanreg;
+ ctrl_cfg.tempreg = bt->tempreg;
+ memcpy(&ctrl_cfg.cmd, &bt->cmd, sizeof(struct fancmd));
+ ctrl_cfg.mcmd_enable = bt->mcmd_enable;
+
/*
* if started with kernel mode off, prevent the kernel from switching
* off the fan
*/
if (!kernelmode) {
pr_notice("Fan control off, to enable do:\n");
- pr_notice("echo -n \"enabled\" > /sys/class/thermal/thermal_zone0/mode\n");
+ pr_notice("echo -n \"enabled\" > /sys/class/thermal/thermal_zoneN/mode # N=0,1,2...\n");
}
return 0;
}
-static int acerhdf_register_platform(void)
+static int __init acerhdf_register_platform(void)
{
int err = 0;
@@ -713,7 +729,7 @@
platform_driver_unregister(&acerhdf_driver);
}
-static int acerhdf_register_thermal(void)
+static int __init acerhdf_register_thermal(void)
{
cl_dev = thermal_cooling_device_register("acerhdf-fan", NULL,
&acerhdf_cooling_ops);