drm/msm/disp/dpu1: add inline function to validate format support

Check if the dpu format is supported or not using dpu_find_format.

Co-developed-by: Kalyan Thota <quic_kalyant@quicinc.com>
Signed-off-by: Kalyan Thota <quic_kalyant@quicinc.com>
Signed-off-by: Vinod Polimera <quic_vpolimer@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/481670/
Link: https://lore.kernel.org/r/1649695021-19132-2-git-send-email-quic_vpolimer@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284

Based on 1 normalized pattern(s):

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

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 294 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190529141900.825281744@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drm/msm/dpu: Use simple list for plane format init

Simplify the initilization of a list of formats
by passing the list in directly instead of copying
it from one structure to another.

Signed-off-by: Fritz Koenig <frkoenig@google.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>

drm/msm/disp/dpu: Mark a handful of functions as static

Mark a number of static functions that are only unsed in the file
that defines them and remove the prototypes from the headers where
needed.

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>

drm/msm/disp/dpu: Remove unused functions from dpu_formats.c

Remove dpu_format_get_block_size, dpu_format_get_framebuffer_size,
dpu_set_scaler_v2 and dpu_copy_formats they are unused and unneeded.

Signed-off-by: Jordan Crouse <jcrouse@codeauorora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>

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>