From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754611Ab0CBXay (ORCPT ); Tue, 2 Mar 2010 18:30:54 -0500 Received: from kroah.org ([198.145.64.141]:38750 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753420Ab0CBX3x (ORCPT ); Tue, 2 Mar 2010 18:29:53 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: "Lee, Chun-Yi" , Lennart Poettering , Greg Kroah-Hartman Subject: [PATCH 60/62] msi-laptop: Detect 3G device exists by standard ec command Date: Tue, 2 Mar 2010 15:28:59 -0800 Message-Id: <1267572541-410-60-git-send-email-gregkh@suse.de> X-Mailer: git-send-email 1.7.0.1 In-Reply-To: <20100302230933.GA32287@kroah.com> References: <20100302230933.GA32287@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Lee, Chun-Yi Detect 3G device exists by standard ec command. Driver will not create the threeg sysfs file and threeg rfkill interface if there have no internal 3G device in MSI notebook/netbook. Signed-off-by: Lee, Chun-Yi Cc: Lennart Poettering Signed-off-by: Greg Kroah-Hartman --- drivers/platform/x86/msi-laptop.c | 44 ++++++++++++++++++++++++++++-------- 1 files changed, 34 insertions(+), 10 deletions(-) diff --git a/drivers/platform/x86/msi-laptop.c b/drivers/platform/x86/msi-laptop.c index af1b62f..c2b05da 100644 --- a/drivers/platform/x86/msi-laptop.c +++ b/drivers/platform/x86/msi-laptop.c @@ -79,6 +79,8 @@ static int msi_laptop_resume(struct platform_device *device); +#define MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS 0x2f + static int force; module_param(force, bool, 0); MODULE_PARM_DESC(force, "Force driver load, ignore DMI data"); @@ -89,6 +91,7 @@ MODULE_PARM_DESC(auto_brightness, "Enable automatic brightness control (0: disab static bool old_ec_model; static int wlan_s, bluetooth_s, threeg_s; +static int threeg_exists; /* Some MSI 3G netbook only have one fn key to control Wlan/Bluetooth/3G, * those netbook will load the SCM (windows app) to disable the original @@ -224,6 +227,20 @@ static int get_wireless_state_ec_standard(void) return 0; } +static int get_threeg_exists(void) +{ + u8 rdata; + int result; + + result = ec_read(MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS, &rdata); + if (result < 0) + return -1; + + threeg_exists = !!(rdata & MSI_STANDARD_EC_3G_MASK); + + return 0; +} + /* Backlight device stuff */ static int bl_get_brightness(struct backlight_device *b) @@ -561,15 +578,17 @@ static int rfkill_init(struct platform_device *sdev) if (retval) goto err_wlan; - rfk_threeg = rfkill_alloc("msi-threeg", &sdev->dev, RFKILL_TYPE_WWAN, - &rfkill_threeg_ops, NULL); - if (!rfk_threeg) { - retval = -ENOMEM; - goto err_threeg; + if (threeg_exists) { + rfk_threeg = rfkill_alloc("msi-threeg", &sdev->dev, + RFKILL_TYPE_WWAN, &rfkill_threeg_ops, NULL); + if (!rfk_threeg) { + retval = -ENOMEM; + goto err_threeg; + } + retval = rfkill_register(rfk_threeg); + if (retval) + goto err_threeg; } - retval = rfkill_register(rfk_threeg); - if (retval) - goto err_threeg; return 0; @@ -649,6 +668,9 @@ static int __init msi_init(void) if (force || dmi_check_system(msi_dmi_table)) old_ec_model = 1; + if (!old_ec_model) + get_threeg_exists(); + if (!old_ec_model && dmi_check_system(msi_load_scm_models_dmi_table)) load_scm_model = 1; @@ -694,7 +716,9 @@ static int __init msi_init(void) goto fail_platform_device2; if (!old_ec_model) { - ret = device_create_file(&msipf_device->dev, &dev_attr_threeg); + if (threeg_exists) + ret = device_create_file(&msipf_device->dev, + &dev_attr_threeg); if (ret) goto fail_platform_device2; } @@ -733,7 +757,7 @@ static void __exit msi_cleanup(void) { sysfs_remove_group(&msipf_device->dev.kobj, &msipf_attribute_group); - if (!old_ec_model) + if (!old_ec_model && threeg_exists) device_remove_file(&msipf_device->dev, &dev_attr_threeg); platform_device_unregister(msipf_device); platform_driver_unregister(&msipf_driver); -- 1.7.0.1