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drm/amdgpu: add DC feature mask module parameter

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Similar to ppfeaturemask.  Allows you to selectively enable/disable
DC features.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2018-11-06 14:44:29 -05:00
parent 593f79a236
commit 79d197f31b
3 changed files with 16 additions and 0 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu.h
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@ -152,6 +152,7 @@ extern int amdgpu_compute_multipipe;
extern int amdgpu_gpu_recovery; extern int amdgpu_gpu_recovery;
extern int amdgpu_emu_mode; extern int amdgpu_emu_mode;
extern uint amdgpu_smu_memory_pool_size; extern uint amdgpu_smu_memory_pool_size;
extern uint amdgpu_dc_feature_mask;
extern struct amdgpu_mgpu_info mgpu_info; extern struct amdgpu_mgpu_info mgpu_info;
#ifdef CONFIG_DRM_AMDGPU_SI #ifdef CONFIG_DRM_AMDGPU_SI

11
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
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@ -127,6 +127,9 @@ int amdgpu_compute_multipipe = -1;
int amdgpu_gpu_recovery = -1; /* auto */ int amdgpu_gpu_recovery = -1; /* auto */
int amdgpu_emu_mode = 0; int amdgpu_emu_mode = 0;
uint amdgpu_smu_memory_pool_size = 0; uint amdgpu_smu_memory_pool_size = 0;
/* FBC (bit 0) disabled by default*/
uint amdgpu_dc_feature_mask = 0;
struct amdgpu_mgpu_info mgpu_info = { struct amdgpu_mgpu_info mgpu_info = {
.mutex = __MUTEX_INITIALIZER(mgpu_info.mutex), .mutex = __MUTEX_INITIALIZER(mgpu_info.mutex),
}; };
@ -631,6 +634,14 @@ module_param(halt_if_hws_hang, int, 0644);
MODULE_PARM_DESC(halt_if_hws_hang, "Halt if HWS hang is detected (0 = off (default), 1 = on)"); MODULE_PARM_DESC(halt_if_hws_hang, "Halt if HWS hang is detected (0 = off (default), 1 = on)");
#endif #endif
/**
* DOC: dcfeaturemask (uint)
* Override display features enabled. See enum DC_FEATURE_MASK in drivers/gpu/drm/amd/include/amd_shared.h.
* The default is the current set of stable display features.
*/
MODULE_PARM_DESC(dcfeaturemask, "all stable DC features enabled (default))");
module_param_named(dcfeaturemask, amdgpu_dc_feature_mask, uint, 0444);
static const struct pci_device_id pciidlist[] = { static const struct pci_device_id pciidlist[] = {
#ifdef CONFIG_DRM_AMDGPU_SI #ifdef CONFIG_DRM_AMDGPU_SI
{0x1002, 0x6780, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_TAHITI}, {0x1002, 0x6780, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_TAHITI},

4
drivers/gpu/drm/amd/include/amd_shared.h
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@ -133,6 +133,10 @@ enum PP_FEATURE_MASK {
PP_AVFS_MASK = 0x40000, PP_AVFS_MASK = 0x40000,
}; };
enum DC_FEATURE_MASK {
DC_FBC_MASK = 0x1,
};
/** /**
* struct amd_ip_funcs - general hooks for managing amdgpu IP Blocks * struct amd_ip_funcs - general hooks for managing amdgpu IP Blocks
*/ */