Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758752AbZLGARB (ORCPT ); Sun, 6 Dec 2009 19:17:01 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S934384AbZLGAQk (ORCPT ); Sun, 6 Dec 2009 19:16:40 -0500 Received: from kroah.org ([198.145.64.141]:34782 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932819AbZLGAOE (ORCPT ); Sun, 6 Dec 2009 19:14:04 -0500 X-Mailbox-Line: From gregkh@mini.kroah.org Sun Dec 6 16:06:59 2009 Message-Id: <20091207000659.782998635@mini.kroah.org> User-Agent: quilt/0.48-1 Date: Sun, 06 Dec 2009 16:01:25 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: stable-review@kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Peter Feuerer , Andreas Mohr , Borislav Petkov , Len Brown , Adrian von Bidder Subject: [109/119] acerhdf: fix fan control for AOA150 model References: <20091206235936.208334321@mini.kroah.org> Content-Disposition: inline; filename=acerhdf-fix-fan-control-for-aoa150-model.patch In-Reply-To: <20091207000938.GA24743@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 7816 Lines: 235 2.6.31-stable review patch. If anyone has any objections, please let us know. ------------------ From: Peter Feuerer commit ded0cdfc6a7673916b0878c32fa8ba566b4f8cdb upstream. - Apply Borislav Petkov's patch (convert the fancmd[] array to a real struct thus disambiguating command handling and making code more readable.) - Add BIOS product to BIOS table as AOA110 and AOA150 have different register values - Add force_product parameter to allow forcing different product - fix linker warning caused by "acerhdf_drv" not being named "acerhdf_driver" Signed-off-by: Peter Feuerer Cc: Andreas Mohr Acked-by: Borislav Petkov Signed-off-by: Andrew Morton Signed-off-by: Len Brown Cc: Adrian von Bidder Signed-off-by: Greg Kroah-Hartman --- drivers/platform/x86/acerhdf.c | 97 +++++++++++++++++++++++++++-------------- 1 file changed, 66 insertions(+), 31 deletions(-) --- 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 = 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 platfor 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(voi { 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( return; platform_device_del(acerhdf_dev); - platform_driver_unregister(&acerhdf_drv); + platform_driver_unregister(&acerhdf_driver); } static int acerhdf_register_thermal(void) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/