From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Mon, 10 Apr 2006 21:14:03 +0100 (BST) Received: from 81-174-11-161.f5.ngi.it ([81.174.11.161]:36053 "EHLO goldrake.enneenne.com") by ftp.linux-mips.org with ESMTP id S8133481AbWDJUNy (ORCPT ); Mon, 10 Apr 2006 21:13:54 +0100 Received: from zaigor.enneenne.com ([192.168.32.1]) by goldrake.enneenne.com with esmtp (Exim 4.50) id 1FT2uW-0005Vs-If; Mon, 10 Apr 2006 22:22:58 +0200 Received: from giometti by zaigor.enneenne.com with local (Exim 4.60) (envelope-from ) id 1FT2xS-0005c8-Qg; Mon, 10 Apr 2006 22:25:58 +0200 Date: Mon, 10 Apr 2006 22:25:58 +0200 From: Rodolfo Giometti To: linux-mips@linux-mips.org Cc: source@embeddedalley.com Message-ID: <20060410202558.GS23424@enneenne.com> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="f4arffV+Mc+T1KhS" Content-Disposition: inline Organization: GNU/Linux Device Drivers, Embedded Systems and Courses X-PGP-Key: gpg --keyserver keyserver.linux.it --recv-keys D25A5633 User-Agent: Mutt/1.5.11+cvs20060126 X-SA-Exim-Connect-IP: 192.168.32.1 X-SA-Exim-Mail-From: giometti@enneenne.com Subject: [PATCH] au1100fb suspend/resume support X-SA-Exim-Version: 4.2 (built Thu, 03 Mar 2005 10:44:12 +0100) X-SA-Exim-Scanned: Yes (on goldrake.enneenne.com) Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 11082 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: giometti@linux.it Precedence: bulk X-list: linux-mips --f4arffV+Mc+T1KhS Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Hello, here a patch for au1100fb.c in order to add suspend/resume support. Ciao, Rodolfo -- GNU/Linux Solutions e-mail: giometti@enneenne.com Linux Device Driver giometti@gnudd.com Embedded Systems giometti@linux.it UNIX programming phone: +39 349 2432127 --f4arffV+Mc+T1KhS Content-Type: text/plain; charset=us-ascii Content-Disposition: attachment; filename=patch-au1100fb-pm Index: drivers/video/au1100fb.c =================================================================== RCS file: /home/develop/cvs_private/linux-mips-exadron/drivers/video/au1100fb.c,v retrieving revision 1.7 diff -u -r1.7 au1100fb.c --- a/drivers/video/au1100fb.c 2 Jan 2006 16:53:11 -0000 1.7 +++ b/drivers/video/au1100fb.c 10 Apr 2006 20:18:40 -0000 @@ -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 @@ -648,17 +650,66 @@ return 0; } +#ifdef CONFIG_PM +static u32 sys_clksrc; +static struct au1100fb_regs fbregs; int au1100fb_drv_suspend(struct device *dev, u32 state, u32 level) { - /* TODO */ + struct au1100fb_device *fbdev = (struct au1100fb_device*) dev_get_drvdata(dev); + + if (!fbdev) + return 0; + + switch (level) { + case SUSPEND_DISABLE : + /* 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_MUD_MASK, SYS_CLKSRC); + + break; + + case SUSPEND_SAVE_STATE : + memcpy(&fbregs, fbdev->regs, sizeof(struct au1100fb_regs)); + + break; + + case SUSPEND_POWER_DOWN : + + break; + } + return 0; } int au1100fb_drv_resume(struct device *dev, u32 level) { - /* TODO */ + struct au1100fb_device *fbdev = (struct au1100fb_device*) dev_get_drvdata(dev); + + if (!fbdev) + return 0; + + switch (level) { + case RESUME_RESTORE_STATE : + memcpy(fbdev->regs, &fbregs, sizeof(struct au1100fb_regs)); + + break; + + case RESUME_ENABLE : + au_writel(sys_clksrc, SYS_CLKSRC); + + au1100fb_fb_blank(VESA_NO_BLANKING, &fbdev->info); + + break; + } + return 0; } +#endif static struct device_driver au1100fb_driver = { .name = "au1100-lcd", @@ -666,8 +717,10 @@ .probe = au1100fb_drv_probe, .remove = au1100fb_drv_remove, +#ifdef CONFIG_PM .suspend = au1100fb_drv_suspend, .resume = au1100fb_drv_resume, +#endif }; /*-------------------------------------------------------------------------*/ --f4arffV+Mc+T1KhS--