From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Antonino A. Daplas" Subject: [PATCH 2/2] au1100fb: Add power management support Date: Tue, 30 May 2006 05:41:28 +0800 Message-ID: <447B6A88.1090105@gmail.com> Reply-To: linux-fbdev-devel@lists.sourceforge.net Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1FkpWf-0005yV-7r for linux-fbdev-devel@lists.sourceforge.net; Mon, 29 May 2006 14:43:49 -0700 Received: from py-out-1112.google.com ([64.233.166.181]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1FkpWf-0007lm-29 for linux-fbdev-devel@lists.sourceforge.net; Mon, 29 May 2006 14:43:49 -0700 Received: by py-out-1112.google.com with SMTP id b29so228815pya for ; Mon, 29 May 2006 14:43:48 -0700 (PDT) Sender: linux-fbdev-devel-admin@lists.sourceforge.net Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: List-Post: List-Help: List-Subscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" To: Andrew Morton Cc: Linux Fbdev development list , Rodolfo Giometti From: Rodolfo Giometti Add power management support Signed-off-by: Rodolfo Giometti Signed-off-by: Antonino Daplas --- drivers/video/au1100fb.c | 40 ++++++++++++++++++++++++++++++++++++++-- 1 files changed, 38 insertions(+), 2 deletions(-) diff --git a/drivers/video/au1100fb.c b/drivers/video/au1100fb.c index f55c16a..fcb8a4c 100644 --- a/drivers/video/au1100fb.c +++ b/drivers/video/au1100fb.c @@ -7,6 +7,8 @@ * Karl Lessard * * + * PM support added by Rodolfo Giometti + * * Copyright 2002 MontaVista Software * Author: MontaVista Software, Inc. * ppopov@mvista.com or source@mvista.com @@ -602,17 +604,49 @@ int au1100fb_drv_remove(struct device *d return 0; } +#ifdef CONFIG_PM +static u32 sys_clksrc; +static struct au1100fb_regs fbregs; + int au1100fb_drv_suspend(struct device *dev, pm_message_t state) { - /* TODO */ + struct au1100fb_device *fbdev = dev_get_drvdata(dev); + + if (!fbdev) + return 0; + + /* Save the clock source state */ + sys_clksrc = au_readl(SYS_CLKSRC); + + /* Blank the LCD */ + au1100fb_fb_blank(VESA_POWERDOWN, &fbdev->info); + + /* Stop LCD clocking */ + au_writel(sys_clksrc & ~SYS_CS_ML_MASK, SYS_CLKSRC); + + memcpy(&fbregs, fbdev->regs, sizeof(struct au1100fb_regs)); + return 0; } int au1100fb_drv_resume(struct device *dev) { - /* TODO */ + struct au1100fb_device *fbdev = dev_get_drvdata(dev); + + if (!fbdev) + return 0; + + memcpy(fbdev->regs, &fbregs, sizeof(struct au1100fb_regs)); + + /* Restart LCD clocking */ + au_writel(sys_clksrc, SYS_CLKSRC); + + /* Unblank the LCD */ + au1100fb_fb_blank(VESA_NO_BLANKING, &fbdev->info); + return 0; } +#endif static struct device_driver au1100fb_driver = { .name = "au1100-lcd", @@ -620,8 +654,10 @@ static struct device_driver au1100fb_dri .probe = au1100fb_drv_probe, .remove = au1100fb_drv_remove, +#ifdef CONFIG_PM .suspend = au1100fb_drv_suspend, .resume = au1100fb_drv_resume, +#endif }; /*-------------------------------------------------------------------------*/ ------------------------------------------------------- All the advantages of Linux Managed Hosting--Without the Cost and Risk! Fully trained technicians. The highest number of Red Hat certifications in the hosting industry. Fanatical Support. Click to learn more http://sel.as-us.falkag.net/sel?cmd=lnk&kid=107521&bid=248729&dat=121642