From b7bc596ebbe0cddc97d76ef9309f64471bbf13eb Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 19 Nov 2014 13:12:54 -0500 Subject: drm/radeon: disable native backlight control on pre-r6xx asics (v2) Just use the acpi interface. That's what windows uses on this generation and it's the only thing that seems to work reliably on these generation parts. You can still force the native backlight interface by setting radeon.backlight=1 Bug: https://bugzilla.kernel.org/show_bug.cgi?id=88501 v2: merge into above if/else block Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/radeon_encoders.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c index 9a19e52cc655..6b670b0bc47b 100644 --- a/drivers/gpu/drm/radeon/radeon_encoders.c +++ b/drivers/gpu/drm/radeon/radeon_encoders.c @@ -179,6 +179,9 @@ static void radeon_encoder_add_backlight(struct radeon_encoder *radeon_encoder, (rdev->pdev->subsystem_vendor == 0x1734) && (rdev->pdev->subsystem_device == 0x1107)) use_bl = false; + /* disable native backlight control on older asics */ + else if (rdev->family < CHIP_R600) + use_bl = false; else use_bl = true; } -- cgit v1.2.3 From 28731d5818ae25b92d1fb82fe0ac196e97102c1b Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 12 Nov 2014 19:17:02 -0500 Subject: drm/radeon: fix endian swapping in vbios fetch for tdp table Value needs to be swapped on BE. Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/r600_dpm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/radeon/r600_dpm.c b/drivers/gpu/drm/radeon/r600_dpm.c index f6309bd23e01..b5c73df8e202 100644 --- a/drivers/gpu/drm/radeon/r600_dpm.c +++ b/drivers/gpu/drm/radeon/r600_dpm.c @@ -1256,7 +1256,7 @@ int r600_parse_extended_power_table(struct radeon_device *rdev) (mode_info->atom_context->bios + data_offset + le16_to_cpu(ext_hdr->usPowerTuneTableOffset)); rdev->pm.dpm.dyn_state.cac_tdp_table->maximum_power_delivery_limit = - ppt->usMaximumPowerDeliveryLimit; + le16_to_cpu(ppt->usMaximumPowerDeliveryLimit); pt = &ppt->power_tune_table; } else { ATOM_PPLIB_POWERTUNE_Table *ppt = (ATOM_PPLIB_POWERTUNE_Table *) -- cgit v1.2.3