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drm/amdgpu: drop legacy IO bar support

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It was leftover from radeon where it was required for some
specific old hardware.  It hasn't been required for ages
and the driver already falls back to MMIO when legacy IO
is not available.  Legacy IO also seems to be problematic on
on some thunderbolt devices.  Drop it.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Nicholas Johnson <nicholas.johnson-opensource@outlook.com.au>
This commit is contained in:
Alex Deucher
2021-03-15 11:14:40 -04:00
parent 5a613586c8
commit e99d2eaafd
5 changed files with 2 additions and 111 deletions
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2
drivers/gpu/drm/amd/amdgpu/atom.h
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@@ -116,8 +116,6 @@ struct card_info {
struct drm_device *dev;
void (* reg_write)(struct card_info *, uint32_t, uint32_t); /* filled by driver */
uint32_t (* reg_read)(struct card_info *, uint32_t); /* filled by driver */
void (* ioreg_write)(struct card_info *, uint32_t, uint32_t); /* filled by driver */
uint32_t (* ioreg_read)(struct card_info *, uint32_t); /* filled by driver */
void (* mc_write)(struct card_info *, uint32_t, uint32_t); /* filled by driver */
uint32_t (* mc_read)(struct card_info *, uint32_t); /* filled by driver */
void (* pll_write)(struct card_info *, uint32_t, uint32_t); /* filled by driver */