From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Garrett Subject: [PATCH, RFC] [3/3] APM support for generic in-kernel AC status Date: Wed, 8 Feb 2006 13:05:43 +0000 Message-ID: <20060208130543.GC25659@srcf.ucam.org> References: <20060208125753.GA25562@srcf.ucam.org> <20060208130422.GB25659@srcf.ucam.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20060208130422.GB25659@srcf.ucam.org> Sender: linux-kernel-owner@vger.kernel.org To: linux-pm@lists.osdl.org, linux-kernel@vger.kernel.org, sfr@canb.auug.org.au List-Id: linux-pm@vger.kernel.org This adds APM support for the generic in-kernel AC status code. Signed-Off-By: Matthew Garrett diff --git a/arch/i386/kernel/apm.c b/arch/i386/kernel/apm.c index 6c8e483..e63f533 100644 --- a/arch/i386/kernel/apm.c +++ b/arch/i386/kernel/apm.c @@ -1627,6 +1627,18 @@ static int do_open(struct inode * inode, return 0; } +static int apm_get_online_status(void) +{ + unsigned short bx; + unsigned short cx; + unsigned short dx; + + if (apm_get_power_status(&bx, &cx, &dx)) + return 0; + + return ((bx >> 8) & 0xff); +}; + static int apm_get_info(char *buf, char **start, off_t fpos, int length) { char * p; @@ -2372,6 +2384,8 @@ static int __init apm_init(void) misc_register(&apm_device); + pm_set_ac_status(apm_get_online_status); + if (HZ != 100) idle_period = (idle_period * HZ) / 100; if (idle_threshold < 100) { @@ -2396,6 +2410,9 @@ static void __exit apm_exit(void) */ cpu_idle_wait(); } + + pm_set_ac_status(NULL); + if (((apm_info.bios.flags & APM_BIOS_DISENGAGED) == 0) && (apm_info.connection_version > 0x0100)) { error = apm_engage_power_management(APM_DEVICE_ALL, 0); -- Matthew Garrett | mjg59@srcf.ucam.org