linux-kernel - Re: [Linux-fbdev-devel] Fwd: [Suspend-devel] resume not working on acer ferrari 4005 with radeonfb enabled

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Message-Id: <200611172133.50049.chrmhoffmann@gmail.com>
Date:	Fri, 17 Nov 2006 21:33:44 +0100
From:	Christian Hoffmann <chrmhoffmann@...il.com>
To:	Stuffed Crust <pizza@...ftnet.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	linux-fbdev-devel@...ts.sourceforge.net,
	Christian Hoffmann <Christian.Hoffmann@...lstreetsystems.com>,
	Andrew Morton <akpm@...l.org>,
	LKML <linux-kernel@...r.kernel.org>, Pavel Machek <pavel@....cz>
Subject: Re: [Linux-fbdev-devel] Fwd: [Suspend-devel] resume not working on acer ferrari 4005 with radeonfb enabled

On Friday 17 November 2006 16:41, Stuffed Crust wrote:
> On Fri, Nov 17, 2006 at 01:07:58AM -0500, Stuffed Crust wrote:
> >   http://www.shaftnet.org/users/pizza/radeonfb-atom-2.6.19-v7-WIP1.diff
>
>  http://www.shaftnet.org/users/pizza/radeonfb-atom-2.6.19-v7-WIP2.diff
>
> This incorporates the latest round of BenH's fixes and changes, but
> backs out the PCI suspend changes, which need independent review and
> testing.
>
> (BenH has promised a little more work before he's ready to sign off,
>  hence the -WIP2 designation)
>
> The following patch contains a rewrite of radeonfb's suspend/resume code
> to use standard PCI subsystem calls.  It applies to 2.6.19-rc6 and also
> on top of the v7-WIP2 patch.
>
>  http://www.shaftnet.org/users/pizza/radeonfb-atom-2.6.19-suspend.diff
>
> Christian, if you could see if the latter patch (on top of the -v6b or
> -WIP2 patches) makes a difference for your suspend/resume problems..
>
> And with these patches, I'm going to drop offline for a camping trip
> over the weekend.  I'll pick this stuff back up on Monday.
>
>  - Solomon

Hlo,

it still locks up. 
...           
    pci_set_power_state(pdev, PCI_D0);
    pci_restore_state(pdev);
    if (pci_enable_device(pdev)) {
                rc = -ENODEV;
                printk(KERN_ERR "radeonfb (%s): can't enable PCI device !\n",
                       pci_name(pdev));
                goto bail;
        }
        pci_set_master(pdev);
        if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
                /* Wakeup chip. Check from config space if we were powered off
                 * (todo: additionally, check CLK_PIN_CNTL too)
                 */
                if (rinfo->pm_mode & radeon_pm_off) {
                        if (rinfo->reinit_func != NULL)
                                rinfo->reinit_func(rinfo);
                        else {
                                printk(KERN_ERR "radeonfb (%s): can't resume 
radeon from"
                                       " D3 cold, need softboot !", 
pci_name(pdev));
                                rc = -EIO;
                                goto bail;
                        }
                }
                /* If we support D2, try to resume... we should check what was 
our
                 * state though... (were we really in D2 state ?). Right now, 
this code
                 * is only enable on Macs so it's fine.
                 */
                else if (rinfo->pm_mode & radeon_pm_d2)
                        radeon_set_suspend(rinfo, 0);

                rinfo->asleep = 0;
        } else
                radeon_engine_idle();
        goto bail;

When I comment out the rinfo->asleep = 0; line, the machine comes back. So it 
seems that rinfo struct is still corrupted somehow.

Chris

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