kernel/linux.git/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c, branch v4.18.18

drm/amdgpu: fix a reversed condition

2018-09-15T07:46:57+00:00

commit ccf9ef0b0d10434dec5046bcfc4e834a7b1830fd upstream. This test was reversed so it would end up leading to vddnb value can't be read via hwmon on APU. Reviewed-by: Evan Quan Reviewed-by: Alex Deucher Signed-off-by: Rex Zhu Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amdgpu/pm: Fix potential Spectre v1

2018-08-24T11:04:50+00:00

commit ddf74e79a54070f277ae520722d3bab7f7a6c67a upstream. idx can be indirectly controlled by user-space, hence leading to a potential exploitation of the Spectre variant 1 vulnerability. This issue was detected with the help of Smatch: drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c:408 amdgpu_set_pp_force_state() warn: potential spectre issue 'data.states' Fix this by sanitizing idx before using it to index data.states Notice that given that speculation windows are large, the policy is to kill the speculation on the first load and not worry if it can be completed with a dependent load/store [1]. [1] https://marc.info/?l=linux-kernel&m=152449131114778&w=2 Cc: stable@vger.kernel.org Signed-off-by: Gustavo A. R. Silva Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/amdgpu/pm: fix display count in non-DC path

2018-07-02T18:41:11+00:00

new_active_crtcs is a bitmask, new_active_crtc_count is the actual count. Reviewed-by: Rex Zhu Signed-off-by: Alex Deucher

drm/amdgpu: Fix display corruption on CI with dpm enabled

2018-05-15T18:44:19+00:00

with dpm enabled, need to get active crtcs in dc/no-dc mode. caused by 'commit ebb649667a31 ("drm/amdgpu: Set pm_display_cfg in non-dc mode")' Reviewed-by: Huang Rui Signed-off-by: Rex Zhu Signed-off-by: Alex Deucher

drm/amd/pp: Skip fan attributes if fan not present

2018-05-15T18:44:18+00:00

With powerplay enabled, also need to skip fan attributes if no fan present. Reviewed-by: Huang Rui Signed-off-by: Rex Zhu Signed-off-by: Alex Deucher

drm/amdgpu: change pp_dpm clk/mclk/pcie input format.

2018-05-15T18:43:50+00:00

1. support more than 8 values when setting get_pp_dpm_mclk/ sclk/pcie, the former design just parse command format like "echo xxxx >　pp_dpm_sclk" and current can parse "echo xx xxx xxxx > pp_dpm_sclk" whose operation is more user-friendly and convinent and can offer more values; 2. be compatible with former design like "xx". 3. add DOC: pp_dpm_sclk pp_dpm_mclk pp_dpm_pcie Bug:KFD-385 Signed-off-by: welu Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amd/pp: Print out voltage/clock range in sysfs

2018-05-15T18:43:48+00:00

when user cat pp_od_clk_voltage add display info about the sclk/mclk/vddc range that user can overdrive output as: OD_SCLK: 0: 300MHz 900mV 1: 400MHz 912mV 2: 500MHz 925mV 3: 600MHz 937mV 4: 700MHz 950mV 5: 800MHz 975mV 6: 900MHz 987mV 7: 1000MHz 1000mV OD_MCLK: 0: 300MHz 900mV 1: 1500MHz 912mV OD_RANGE: SCLK: 300MHz 1200MHz MCLK: 300MHz 1500MHz VDDC: 700mV 1200mV also 1. remove unnecessary whitespace before a quoted newline 2. change unit of frequency Mhz to MHz Reviewed-by: Alex Deucher Signed-off-by: Rex Zhu Signed-off-by: Alex Deucher

drm/amdgpu/pm: document pp_od_clk_voltage

2018-05-15T18:43:46+00:00

sysfs interface for fine grained clock and voltage control. Acked-by: Felix Kuehling Reviewed-by: Huang Rui Signed-off-by: Alex Deucher

drm/amdgpu/pm: document pp_power_profile_mode

2018-05-15T18:43:45+00:00

sysfs file for adjusting power level heuristics. Acked-by: Felix Kuehling Reviewed-by: Huang Rui Signed-off-by: Alex Deucher

drm/amdgpu/pm: document pp_dpm_sclk pp_dpm_mclk pp_dpm_pcie (v2)

2018-05-15T18:43:45+00:00

Used for manually masking dpm states. v2: drop comment about current state (Rex) Acked-by: Felix Kuehling Reviewed-by: Huang Rui Signed-off-by: Alex Deucher