diff options
author | Leo (Sunpeng) Li <sunpeng.li@amd.com> | 2017-12-18 14:20:39 -0500 |
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committer | Alex Deucher <alexander.deucher@amd.com> | 2018-02-19 14:17:36 -0500 |
commit | 31aec354f92ca811df79439233130dbd232162a9 (patch) | |
tree | 1b99b1672dd517481f50e488d709d53d07988618 /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c | |
parent | 8cb1545caddb4416f12c43adba4657e48a14e0fc (diff) | |
download | linux-31aec354f92ca811df79439233130dbd232162a9.tar.bz2 |
drm/amd/display: Implement interface for CRC on CRTC
Add interfaces in DC for per CRTC CRC configuration and fetching.
Also implement amdgpu_dm functions to hook onto DRM.
Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c')
-rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c new file mode 100644 index 000000000000..5768103803fe --- /dev/null +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c @@ -0,0 +1,113 @@ +/* + * Copyright 2015 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: AMD + * + */ + +#include <drm/drm_crtc.h> + +#include "amdgpu.h" +#include "amdgpu_dm.h" +#include "dc.h" + +enum amdgpu_dm_pipe_crc_source { + AMDGPU_DM_PIPE_CRC_SOURCE_NONE = 0, + AMDGPU_DM_PIPE_CRC_SOURCE_AUTO, + AMDGPU_DM_PIPE_CRC_SOURCE_MAX, + AMDGPU_DM_PIPE_CRC_SOURCE_INVALID = -1, +}; + +static enum amdgpu_dm_pipe_crc_source dm_parse_crc_source(const char *source) +{ + if (!source || !strcmp(source, "none")) + return AMDGPU_DM_PIPE_CRC_SOURCE_NONE; + if (!strcmp(source, "auto")) + return AMDGPU_DM_PIPE_CRC_SOURCE_AUTO; + + return AMDGPU_DM_PIPE_CRC_SOURCE_INVALID; +} + +int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name, + size_t *values_cnt) +{ + struct dm_crtc_state *crtc_state = to_dm_crtc_state(crtc->state); + struct dc_stream_state *stream_state = crtc_state->stream; + bool ret; + + enum amdgpu_dm_pipe_crc_source source = dm_parse_crc_source(src_name); + + if (source < 0) { + DRM_DEBUG_DRIVER("Unknown CRC source %s for CRTC%d\n", + src_name, crtc->index); + return -EINVAL; + } + + if (source == AMDGPU_DM_PIPE_CRC_SOURCE_AUTO) { + ret = dc_stream_configure_crc(stream_state->ctx->dc, + stream_state, + true, true); + } else { + ret = dc_stream_configure_crc(stream_state->ctx->dc, + stream_state, + false, false); + } + + if (ret) { + *values_cnt = 3; + /* Reset crc_skipped flag on dm state */ + crtc_state->crc_first_skipped = false; + return 0; + } + return -EINVAL; +} + +/** + * amdgpu_dm_crtc_handle_crc_irq: Report to DRM the CRC on given CRTC. + * @crtc: DRM CRTC object. + * + * This function should be called at the end of a vblank, when the fb has been + * fully processed through the pipe. + */ +void amdgpu_dm_crtc_handle_crc_irq(struct drm_crtc *crtc) +{ + struct dm_crtc_state *crtc_state = to_dm_crtc_state(crtc->state); + struct dc_stream_state *stream_state = crtc_state->stream; + uint32_t crcs[3]; + + /* + * Since flipping and crc enablement happen asynchronously, we - more + * often than not - will be returning an 'uncooked' crc on first frame. + * Probably because hw isn't ready yet. Simply skip the first crc + * value. + */ + if (!crtc_state->crc_first_skipped) { + crtc_state->crc_first_skipped = true; + return; + } + + if (!dc_stream_get_crc(stream_state->ctx->dc, stream_state, + &crcs[0], &crcs[1], &crcs[2])) + return; + + drm_crtc_add_crc_entry(crtc, true, + drm_crtc_accurate_vblank_count(crtc), crcs); +} |