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author | Jeykumar Sankaran <jsanka@codeaurora.org> | 2018-06-27 15:26:09 -0400 |
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committer | Sean Paul <seanpaul@chromium.org> | 2018-07-26 10:45:04 -0400 |
commit | 25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef (patch) | |
tree | 0da1ad5999deaee810a28b4bfa47d60d4822e00c /drivers/gpu/drm/msm/disp/dpu1/dpu_formats.h | |
parent | 036bfeb33b89578ab924fa198213260659e08dc8 (diff) | |
download | linux-25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef.tar.bz2 |
drm/msm: Add SDM845 DPU support
SDM845 SoC includes the Mobile Display Sub System (MDSS) which is a
top level wrapper consisting of Display Processing Unit (DPU) and
display peripheral modules such as Display Serial Interface (DSI)
and DisplayPort (DP).
MDSS functions essentially as a back-end composition engine. It blends
video and graphic images stored in the frame buffers and scans out the
composed image to a display sink (over DSI/DP).
The following diagram represents hardware blocks for a simple pipeline
(two planes are present on a given crtc which is connected to a DSI
connector):
MDSS
+---------------------------------+
| +-----------------------------+ |
| | DPU | |
| | +--------+ +--------+ | |
| | | SSPP | | SSPP | | |
| | +----+---+ +----+---+ | |
| | | | | |
| | +----v-----------v---+ | |
| | | Layer Mixer (LM) | | |
| | +--------------------+ | |
| | +--------------------+ | |
| | | PingPong (PP) | | |
| | +--------------------+ | |
| | +--------------------+ | |
| | | INTERFACE (VIDEO) | | |
| | +---+----------------+ | |
| +------|----------------------+ |
| | |
| +------|---------------------+ |
| | | DISPLAY PERIPHERALS | |
| | +---v-+ +-----+ | |
| | | DSI | | DP | | |
| | +-----+ +-----+ | |
| +----------------------------+ |
+---------------------------------+
The number of DPU sub-blocks (i.e. SSPPs, LMs, PP blocks and INTFs)
depends on SoC capabilities.
Overview of DPU sub-blocks:
---------------------------
* Source Surface Processor (SSPP):
Refers to any of hardware pipes like ViG, DMA etc. Only ViG pipes are
capable of performing format conversion, scaling and quality improvement
for source surfaces.
* Layer Mixer (LM):
Blend source surfaces together (in requested zorder)
* PingPong (PP):
This block controls frame done interrupt output, EOL and EOF generation,
overflow/underflow control.
* Display interface (INTF):
Timing generator and interface connecting the display peripherals.
DRM components mapping to DPU architecture:
------------------------------------------
PLANEs maps to SSPPs
CRTC maps to LMs
Encoder maps to PPs, INTFs
Data flow setup:
---------------
MDSS hardware can support various data flows (e.g.):
- Dual pipe: Output from two LMs combined to single display.
- Split display: Output from two LMs connected to two separate
interfaces.
The hardware capabilities determine the number of concurrent data paths
possible. Any control path (i.e. pipeline w/i DPU) can be routed to any
of the hardware data paths. A given control path can be triggered,
flushed and controlled independently.
Changes in v3:
- Move msm_media_info.h from uapi to dpu/ subdir
- Remove preclose callback dpu (it's handled in core)
- Fix kbuild warnings with parent_ops
- Remove unused functions from dpu_core_irq
- Rename mdss_phys to mdss
- Rename mdp_phys address space to mdp
- Drop _phys from vbif and regdma binding names
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Chandan Uddaraju <chandanu@codeaurora.org>
Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rajesh Yadav <ryadav@codeaurora.org>
Signed-off-by: Sravanthi Kollukuduru <skolluku@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
[robclark minor rebase]
Signed-off-by: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/msm/disp/dpu1/dpu_formats.h')
-rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_formats.h | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.h new file mode 100644 index 000000000000..b55bfd13e296 --- /dev/null +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.h @@ -0,0 +1,136 @@ +/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _DPU_FORMATS_H +#define _DPU_FORMATS_H + +#include <drm/drm_fourcc.h> +#include "msm_gem.h" +#include "dpu_hw_mdss.h" + +/** + * dpu_get_dpu_format_ext() - Returns dpu format structure pointer. + * @format: DRM FourCC Code + * @modifiers: format modifier array from client, one per plane + */ +const struct dpu_format *dpu_get_dpu_format_ext( + const uint32_t format, + const uint64_t modifier); + +#define dpu_get_dpu_format(f) dpu_get_dpu_format_ext(f, 0) + +/** + * dpu_get_msm_format - get an dpu_format by its msm_format base + * callback function registers with the msm_kms layer + * @kms: kms driver + * @format: DRM FourCC Code + * @modifiers: data layout modifier + */ +const struct msm_format *dpu_get_msm_format( + struct msm_kms *kms, + const uint32_t format, + const uint64_t modifiers); + +/** + * dpu_populate_formats - populate the given array with fourcc codes supported + * @format_list: pointer to list of possible formats + * @pixel_formats: array to populate with fourcc codes + * @pixel_modifiers: array to populate with drm modifiers, can be NULL + * @pixel_formats_max: length of pixel formats array + * Return: number of elements populated + */ +uint32_t dpu_populate_formats( + const struct dpu_format_extended *format_list, + uint32_t *pixel_formats, + uint64_t *pixel_modifiers, + uint32_t pixel_formats_max); + +/** + * dpu_format_get_plane_sizes - calculate size and layout of given buffer format + * @fmt: pointer to dpu_format + * @w: width of the buffer + * @h: height of the buffer + * @layout: layout of the buffer + * @pitches: array of size [DPU_MAX_PLANES] to populate + * pitch for each plane + * + * Return: size of the buffer + */ +int dpu_format_get_plane_sizes( + const struct dpu_format *fmt, + const uint32_t w, + const uint32_t h, + struct dpu_hw_fmt_layout *layout, + const uint32_t *pitches); + +/** + * dpu_format_get_block_size - get block size of given format when + * operating in block mode + * @fmt: pointer to dpu_format + * @w: pointer to width of the block + * @h: pointer to height of the block + * + * Return: 0 if success; error oode otherwise + */ +int dpu_format_get_block_size(const struct dpu_format *fmt, + uint32_t *w, uint32_t *h); + +/** + * dpu_format_check_modified_format - validate format and buffers for + * dpu non-standard, i.e. modified format + * @kms: kms driver + * @msm_fmt: pointer to the msm_fmt base pointer of an dpu_format + * @cmd: fb_cmd2 structure user request + * @bos: gem buffer object list + * + * Return: error code on failure, 0 on success + */ +int dpu_format_check_modified_format( + const struct msm_kms *kms, + const struct msm_format *msm_fmt, + const struct drm_mode_fb_cmd2 *cmd, + struct drm_gem_object **bos); + +/** + * dpu_format_populate_layout - populate the given format layout based on + * mmu, fb, and format found in the fb + * @aspace: address space pointer + * @fb: framebuffer pointer + * @fmtl: format layout structure to populate + * + * Return: error code on failure, -EAGAIN if success but the addresses + * are the same as before or 0 if new addresses were populated + */ +int dpu_format_populate_layout( + struct msm_gem_address_space *aspace, + struct drm_framebuffer *fb, + struct dpu_hw_fmt_layout *fmtl); + +/** + * dpu_format_get_framebuffer_size - get framebuffer memory size + * @format: DRM pixel format + * @width: pixel width + * @height: pixel height + * @pitches: array of size [DPU_MAX_PLANES] to populate + * pitch for each plane + * @modifiers: drm modifier + * + * Return: memory size required for frame buffer + */ +uint32_t dpu_format_get_framebuffer_size( + const uint32_t format, + const uint32_t width, + const uint32_t height, + const uint32_t *pitches, + const uint64_t modifiers); + +#endif /*_DPU_FORMATS_H */ |