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authorDaniel Drake <dsd@laptop.org>2010-10-28 18:23:01 +0100
committerFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>2010-11-09 16:17:02 +0000
commit751305d9b2fd3e03eaab7808e976241d85ca4353 (patch)
tree93a78e80739f07a225fe35da11eafa1ab71e936c /drivers/video/via/viafbdev.c
parent51f4332bb5fef869e8a89895a7bac6b4c03b4946 (diff)
viafb: General power management infrastructure
Multiple devices need S/R hooks (framebuffer, GPIO, camera). Add infrastructure and convert existing framebuffer code to the new model. This patch should create no functional change. Based on earlier work by Jonathan Corbet. Signed-off-by: Daniel Drake <dsd@laptop.org> Acked-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Diffstat (limited to 'drivers/video/via/viafbdev.c')
-rw-r--r--drivers/video/via/viafbdev.c34
1 files changed, 15 insertions, 19 deletions
diff --git a/drivers/video/via/viafbdev.c b/drivers/video/via/viafbdev.c
index d298cfccd6fc..289edd519527 100644
--- a/drivers/video/via/viafbdev.c
+++ b/drivers/video/via/viafbdev.c
@@ -1672,31 +1672,19 @@ static int parse_mode(const char *str, u32 *xres, u32 *yres)
#ifdef CONFIG_PM
-int viafb_suspend(struct pci_dev *pdev, pm_message_t state)
+static int viafb_suspend(void *unused)
{
- if (state.event == PM_EVENT_SUSPEND) {
- acquire_console_sem();
- fb_set_suspend(viafbinfo, 1);
-
- viafb_sync(viafbinfo);
-
- pci_save_state(pdev);
- pci_disable_device(pdev);
- pci_set_power_state(pdev, pci_choose_state(pdev, state));
- release_console_sem();
- }
+ acquire_console_sem();
+ fb_set_suspend(viafbinfo, 1);
+ viafb_sync(viafbinfo);
+ release_console_sem();
return 0;
}
-int viafb_resume(struct pci_dev *pdev)
+static int viafb_resume(void *unused)
{
acquire_console_sem();
- pci_set_power_state(pdev, PCI_D0);
- pci_restore_state(pdev);
- if (pci_enable_device(pdev))
- goto fail;
- pci_set_master(pdev);
if (viaparinfo->shared->vdev->engine_mmio)
viafb_reset_engine(viaparinfo);
viafb_set_par(viafbinfo);
@@ -1704,11 +1692,15 @@ int viafb_resume(struct pci_dev *pdev)
viafb_set_par(viafbinfo1);
fb_set_suspend(viafbinfo, 0);
-fail:
release_console_sem();
return 0;
}
+static struct viafb_pm_hooks viafb_fb_pm_hooks = {
+ .suspend = viafb_suspend,
+ .resume = viafb_resume
+};
+
#endif
@@ -1899,6 +1891,10 @@ int __devinit via_fb_pci_probe(struct viafb_dev *vdev)
viafb_init_proc(viaparinfo->shared);
viafb_init_dac(IGA2);
+
+#ifdef CONFIG_PM
+ viafb_pm_register(&viafb_fb_pm_hooks);
+#endif
return 0;
out_fb_unreg: