From 363eb0b4b787ea6ebb7a58d15df032126c111770 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 8 Jan 2014 17:55:08 -0500 Subject: [PATCH] drm/radeon: add hard_reset module parameter Enabling this parameter enables pci config reset, aka hard reset, which is a bus level chip reset. In some cases this works more reliably than a soft reset. Disabled by default. Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/radeon.h | 1 + drivers/gpu/drm/radeon/radeon_drv.c | 4 ++++ 2 files changed, 5 insertions(+) diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index ba74aad25226..9dd6cc49b877 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -99,6 +99,7 @@ extern int radeon_fastfb; extern int radeon_dpm; extern int radeon_aspm; extern int radeon_runtime_pm; +extern int radeon_hard_reset; /* * Copy from radeon_drv.h so we don't have to include both and have conflicting diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c index f6f30b9e9ff5..e91d548063ef 100644 --- a/drivers/gpu/drm/radeon/radeon_drv.c +++ b/drivers/gpu/drm/radeon/radeon_drv.c @@ -167,6 +167,7 @@ int radeon_fastfb = 0; int radeon_dpm = -1; int radeon_aspm = -1; int radeon_runtime_pm = -1; +int radeon_hard_reset = 0; MODULE_PARM_DESC(no_wb, "Disable AGP writeback for scratch registers"); module_param_named(no_wb, radeon_no_wb, int, 0444); @@ -231,6 +232,9 @@ module_param_named(aspm, radeon_aspm, int, 0444); MODULE_PARM_DESC(runpm, "PX runtime pm (1 = force enable, 0 = disable, -1 = PX only default)"); module_param_named(runpm, radeon_runtime_pm, int, 0444); +MODULE_PARM_DESC(hard_reset, "PCI config reset (1 = force enable, 0 = disable (default))"); +module_param_named(hard_reset, radeon_hard_reset, int, 0444); + static struct pci_device_id pciidlist[] = { radeon_PCI_IDS }; -- 2.39.2