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drm/amdgpu/dce8: RMW hpd registers

Browse source 
No need to hard code the entire register to just
set/clear one bit.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2016-09-28 13:50:27 -04:00
parent 6753ac2bf4
commit 03ae23b93b
1 changed files with 6 additions and 3 deletions
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9
drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
View file

@ -326,9 +326,7 @@ static void dce_v8_0_hpd_init(struct amdgpu_device *adev)
{
struct drm_device *dev = adev->ddev;
struct drm_connector *connector;
u32 tmp = (0x9c4 << DC_HPD1_CONTROL__DC_HPD1_CONNECTION_TIMER__SHIFT) |
(0xfa << DC_HPD1_CONTROL__DC_HPD1_RX_INT_TIMER__SHIFT) |
DC_HPD1_CONTROL__DC_HPD1_EN_MASK;
u32 tmp;
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
struct amdgpu_connector *amdgpu_connector = to_amdgpu_connector(connector);
@ -336,6 +334,8 @@ static void dce_v8_0_hpd_init(struct amdgpu_device *adev)
if (amdgpu_connector->hpd.hpd >= adev->mode_info.num_hpd)
continue;
tmp = RREG32(mmDC_HPD1_CONTROL + hpd_offsets[amdgpu_connector->hpd.hpd]);
tmp |= DC_HPD1_CONTROL__DC_HPD1_EN_MASK;
WREG32(mmDC_HPD1_CONTROL + hpd_offsets[amdgpu_connector->hpd.hpd], tmp);
if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
@ -368,6 +368,7 @@ static void dce_v8_0_hpd_fini(struct amdgpu_device *adev)
{
struct drm_device *dev = adev->ddev;
struct drm_connector *connector;
u32 tmp;
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
struct amdgpu_connector *amdgpu_connector = to_amdgpu_connector(connector);
@ -375,6 +376,8 @@ static void dce_v8_0_hpd_fini(struct amdgpu_device *adev)
if (amdgpu_connector->hpd.hpd >= adev->mode_info.num_hpd)
continue;
tmp = RREG32(mmDC_HPD1_CONTROL + hpd_offsets[amdgpu_connector->hpd.hpd]);
tmp &= ~DC_HPD1_CONTROL__DC_HPD1_EN_MASK;
WREG32(mmDC_HPD1_CONTROL + hpd_offsets[amdgpu_connector->hpd.hpd], 0);
amdgpu_irq_put(adev, &adev->hpd_irq, amdgpu_connector->hpd.hpd);