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Message-Id: <20090712232104.4f2fbf46.peter@piie.net>
Date: Sun, 12 Jul 2009 23:21:04 +0200
From: Peter Feuerer <peter@...e.net>
To: Len Brown <lenb@...nel.org>
Cc: linux-kernel@...r.kernel.org, Andreas Mohr <andi@...as.de>,
Borislav Petkov <petkovbb@...glemail.com>
Subject: [PATCH] Acerhdf: fix fan control for AOA150 model
Hi Len,
please apply,
--
peter
Changed:
o Applied Borislav Petkov's patch (convert the fancmd[] array to a real
struct thus disambiguating command handling and making code more readable.)
o Added BIOS product to BIOS table as AOA110 and AOA150 have
different register values
o Added force_product parameter to allow forcing different
product
o fixed linker warning caused by "acerhdf_drv" not being named
"acerhdf_driver"
Signed-off-by: Peter Feuerer <peter@...e.net>
---
diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
index bdfee17..aa298d6 100644
--- a/drivers/platform/x86/acerhdf.c
+++ b/drivers/platform/x86/acerhdf.c
@@ -52,7 +52,7 @@
*/
#undef START_IN_KERNEL_MODE
-#define DRV_VER "0.5.13"
+#define DRV_VER "0.5.16"
/*
* According to the Atom N270 datasheet,
@@ -90,6 +90,7 @@ static unsigned int fanoff = 58;
static unsigned int verbose;
static unsigned int fanstate = ACERHDF_FAN_AUTO;
static char force_bios[16];
+static char force_product[16];
static unsigned int prev_interval;
struct thermal_zone_device *thz_dev;
struct thermal_cooling_device *cl_dev;
@@ -107,34 +108,58 @@ module_param(verbose, uint, 0600);
MODULE_PARM_DESC(verbose, "Enable verbose dmesg output");
module_param_string(force_bios, force_bios, 16, 0);
MODULE_PARM_DESC(force_bios, "Force BIOS version and omit BIOS check");
+module_param_string(force_product, force_product, 16, 0);
+MODULE_PARM_DESC(force_product, "Force BIOS product and omit BIOS check");
+
+/*
+ * cmd_off: to switch the fan completely off / to check if the fan is off
+ * cmd_auto: to set the BIOS in control of the fan. The BIOS regulates then
+ * the fan speed depending on the temperature
+ */
+struct fancmd {
+ u8 cmd_off;
+ u8 cmd_auto;
+};
/* BIOS settings */
struct bios_settings_t {
const char *vendor;
+ const char *product;
const char *version;
unsigned char fanreg;
unsigned char tempreg;
- unsigned char fancmd[2]; /* fan off and auto commands */
+ struct fancmd cmd;
};
/* Register addresses and values for different BIOS versions */
static const struct bios_settings_t bios_tbl[] = {
- {"Acer", "v0.3109", 0x55, 0x58, {0x1f, 0x00} },
- {"Acer", "v0.3114", 0x55, 0x58, {0x1f, 0x00} },
- {"Acer", "v0.3301", 0x55, 0x58, {0xaf, 0x00} },
- {"Acer", "v0.3304", 0x55, 0x58, {0xaf, 0x00} },
- {"Acer", "v0.3305", 0x55, 0x58, {0xaf, 0x00} },
- {"Acer", "v0.3308", 0x55, 0x58, {0x21, 0x00} },
- {"Acer", "v0.3309", 0x55, 0x58, {0x21, 0x00} },
- {"Acer", "v0.3310", 0x55, 0x58, {0x21, 0x00} },
- {"Gateway", "v0.3103", 0x55, 0x58, {0x21, 0x00} },
- {"Packard Bell", "v0.3105", 0x55, 0x58, {0x21, 0x00} },
- {"", "", 0, 0, {0, 0} }
+ /* AOA110 */
+ {"Acer", "AOA110", "v0.3109", 0x55, 0x58, {0x1f, 0x00} },
+ {"Acer", "AOA110", "v0.3114", 0x55, 0x58, {0x1f, 0x00} },
+ {"Acer", "AOA110", "v0.3301", 0x55, 0x58, {0xaf, 0x00} },
+ {"Acer", "AOA110", "v0.3304", 0x55, 0x58, {0xaf, 0x00} },
+ {"Acer", "AOA110", "v0.3305", 0x55, 0x58, {0xaf, 0x00} },
+ {"Acer", "AOA110", "v0.3308", 0x55, 0x58, {0x21, 0x00} },
+ {"Acer", "AOA110", "v0.3309", 0x55, 0x58, {0x21, 0x00} },
+ {"Acer", "AOA110", "v0.3310", 0x55, 0x58, {0x21, 0x00} },
+ /* AOA150 */
+ {"Acer", "AOA150", "v0.3114", 0x55, 0x58, {0x20, 0x00} },
+ {"Acer", "AOA150", "v0.3304", 0x55, 0x58, {0x20, 0x00} },
+ {"Acer", "AOA150", "v0.3305", 0x55, 0x58, {0x20, 0x00} },
+ {"Acer", "AOA150", "v0.3308", 0x55, 0x58, {0x20, 0x00} },
+ {"Acer", "AOA150", "v0.3309", 0x55, 0x58, {0x20, 0x00} },
+ {"Acer", "AOA150", "v0.3310", 0x55, 0x58, {0x20, 0x00} },
+ /* special BIOS / other */
+ {"Gateway", "AOA110", "v0.3103", 0x55, 0x58, {0x21, 0x00} },
+ {"Gateway", "AOA150", "v0.3103", 0x55, 0x58, {0x20, 0x00} },
+ {"Packard Bell", "DOA150", "v0.3104", 0x55, 0x58, {0x21, 0x00} },
+ {"Packard Bell", "AOA110", "v0.3105", 0x55, 0x58, {0x21, 0x00} },
+ /* pewpew-terminator */
+ {"", "", "", 0, 0, {0, 0} }
};
static const struct bios_settings_t *bios_cfg __read_mostly;
-
static int acerhdf_get_temp(int *temp)
{
u8 read_temp;
@@ -150,13 +175,14 @@ static int acerhdf_get_temp(int *temp)
static int acerhdf_get_fanstate(int *state)
{
u8 fan;
- bool tmp;
if (ec_read(bios_cfg->fanreg, &fan))
return -EINVAL;
- tmp = (fan == bios_cfg->fancmd[ACERHDF_FAN_OFF]);
- *state = tmp ? ACERHDF_FAN_OFF : ACERHDF_FAN_AUTO;
+ if (fan != bios_cfg->cmd.cmd_off)
+ *state = ACERHDF_FAN_AUTO;
+ else
+ *state = ACERHDF_FAN_OFF;
return 0;
}
@@ -175,7 +201,8 @@ static void acerhdf_change_fanstate(int state)
state = ACERHDF_FAN_AUTO;
}
- cmd = bios_cfg->fancmd[state];
+ cmd = (state == ACERHDF_FAN_OFF) ? bios_cfg->cmd.cmd_off
+ : bios_cfg->cmd.cmd_auto;
fanstate = state;
ec_write(bios_cfg->fanreg, cmd);
@@ -437,7 +464,7 @@ static int acerhdf_remove(struct platform_device *device)
return 0;
}
-struct platform_driver acerhdf_drv = {
+static struct platform_driver acerhdf_driver = {
.driver = {
.name = "acerhdf",
.owner = THIS_MODULE,
@@ -454,32 +481,40 @@ static int acerhdf_check_hardware(void)
{
char const *vendor, *version, *product;
int i;
+ unsigned long prod_len = 0;
/* get BIOS data */
vendor = dmi_get_system_info(DMI_SYS_VENDOR);
version = dmi_get_system_info(DMI_BIOS_VERSION);
product = dmi_get_system_info(DMI_PRODUCT_NAME);
+
pr_info("Acer Aspire One Fan driver, v.%s\n", DRV_VER);
- if (!force_bios[0]) {
- if (strncmp(product, "AO", 2)) {
- pr_err("no Aspire One hardware found\n");
- return -EINVAL;
- }
- } else {
- pr_info("forcing BIOS version: %s\n", version);
+ if (force_bios[0]) {
version = force_bios;
+ pr_info("forcing BIOS version: %s\n", version);
kernelmode = 0;
}
+ if (force_product[0]) {
+ product = force_product;
+ pr_info("forcing BIOS product: %s\n", product);
+ kernelmode = 0;
+ }
+
+ prod_len = strlen(product);
+
if (verbose)
pr_info("BIOS info: %s %s, product: %s\n",
vendor, version, product);
/* search BIOS version and vendor in BIOS settings table */
for (i = 0; bios_tbl[i].version[0]; i++) {
- if (!strcmp(bios_tbl[i].vendor, vendor) &&
+ if (strlen(bios_tbl[i].product) >= prod_len &&
+ !strncmp(bios_tbl[i].product, product,
+ strlen(bios_tbl[i].product)) &&
+ !strcmp(bios_tbl[i].vendor, vendor) &&
!strcmp(bios_tbl[i].version, version)) {
bios_cfg = &bios_tbl[i];
break;
@@ -487,8 +522,8 @@ static int acerhdf_check_hardware(void)
}
if (!bios_cfg) {
- pr_err("unknown (unsupported) BIOS version %s/%s, "
- "please report, aborting!\n", vendor, version);
+ pr_err("unknown (unsupported) BIOS version %s/%s/%s, "
+ "please report, aborting!\n", vendor, product, version);
return -EINVAL;
}
@@ -509,7 +544,7 @@ static int acerhdf_register_platform(void)
{
int err = 0;
- err = platform_driver_register(&acerhdf_drv);
+ err = platform_driver_register(&acerhdf_driver);
if (err)
return err;
@@ -525,7 +560,7 @@ static void acerhdf_unregister_platform(void)
return;
platform_device_del(acerhdf_dev);
- platform_driver_unregister(&acerhdf_drv);
+ platform_driver_unregister(&acerhdf_driver);
}
static int acerhdf_register_thermal(void)
--
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