Hi Hans,

On Tue, Dec 7, 2021 at 3:20 PM Hans Verkuil [off-list ref] wrote:

On 12/2/21 7:27 AM, Moudy Ho wrote:

quoted

This patch adds driver for Mediatek's Media Data Path ver.3 (MDP3).
It provides the following functions:
  color transform, format conversion, resize, crop, rotate, flip
  and additional image quality enhancement.

The MDP3 driver is mainly used for Google Chromebook products to
import the new architecture to set the HW settings as shown below:
  User -> V4L2 framework
    -> MDP3 driver -> SCP (setting calculations)
      -> MDP3 driver -> CMDQ (GCE driver) -> HW

Each modules' related operation control is sited in mtk-mdp3-comp.c
Each modules' register table is defined in file with "mdp_reg_" prefix
GCE related API, operation control  sited in mtk-mdp3-cmdq.c
V4L2 m2m device functions are implemented in mtk-mdp3-m2m.c
Probe, power, suspend/resume, system level functions are defined in
mtk-mdp3-core.c

Signed-off-by: Ping-Hsun Wu <redacted>
Signed-off-by: daoyuan huang <redacted>
Signed-off-by: Moudy Ho <redacted>
Reported-by: kernel test robot <redacted>
---
 drivers/media/platform/Kconfig                |   19 +
 drivers/media/platform/Makefile               |    2 +
 drivers/media/platform/mtk-mdp3/Makefile      |    6 +
 .../media/platform/mtk-mdp3/mdp_reg_ccorr.h   |   19 +
 drivers/media/platform/mtk-mdp3/mdp_reg_isp.h |   27 +
 .../media/platform/mtk-mdp3/mdp_reg_rdma.h    |   65 +
 drivers/media/platform/mtk-mdp3/mdp_reg_rsz.h |   39 +
 .../media/platform/mtk-mdp3/mdp_reg_wdma.h    |   47 +
 .../media/platform/mtk-mdp3/mdp_reg_wrot.h    |   55 +
 drivers/media/platform/mtk-mdp3/mtk-img-ipi.h |  280 ++++
 .../media/platform/mtk-mdp3/mtk-mdp3-cmdq.c   |  505 +++++++
 .../media/platform/mtk-mdp3/mtk-mdp3-cmdq.h   |   46 +
 .../media/platform/mtk-mdp3/mtk-mdp3-comp.c   | 1264 +++++++++++++++++
 .../media/platform/mtk-mdp3/mtk-mdp3-comp.h   |  147 ++
 .../media/platform/mtk-mdp3/mtk-mdp3-core.c   |  338 +++++
 .../media/platform/mtk-mdp3/mtk-mdp3-core.h   |   76 +
 .../media/platform/mtk-mdp3/mtk-mdp3-m2m.c    |  789 ++++++++++
 .../media/platform/mtk-mdp3/mtk-mdp3-m2m.h    |   49 +
 .../media/platform/mtk-mdp3/mtk-mdp3-regs.c   |  737 ++++++++++
 .../media/platform/mtk-mdp3/mtk-mdp3-regs.h   |  372 +++++
 .../media/platform/mtk-mdp3/mtk-mdp3-vpu.c    |  312 ++++
 .../media/platform/mtk-mdp3/mtk-mdp3-vpu.h    |   78 +
 22 files changed, 5272 insertions(+)
 create mode 100644 drivers/media/platform/mtk-mdp3/Makefile
 create mode 100644 drivers/media/platform/mtk-mdp3/mdp_reg_ccorr.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mdp_reg_isp.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mdp_reg_rdma.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mdp_reg_rsz.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mdp_reg_wdma.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mdp_reg_wrot.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-img-ipi.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-cmdq.c
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-cmdq.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-comp.c
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-comp.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-core.c
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-core.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-m2m.c
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-m2m.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-regs.c
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-regs.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-vpu.c
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-vpu.h

diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index cf4adc64c953..e6c1e8892154 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig

@@ -315,6 +315,25 @@ config VIDEO_MEDIATEK_MDP
          To compile this driver as a module, choose M here: the
          module will be called mtk-mdp.

+config VIDEO_MEDIATEK_MDP3
+     tristate "Mediatek MDP v3 driver"
+     depends on MTK_IOMMU || COMPLIE_TEST

Typo: COMPLIE_TEST -> COMPILE_TEST

After fixing this, trying to build this driver on my PC results in:

ERROR: modpost: "mtk_mmsys_mdp_connect" [drivers/media/platform/mtk-mdp3/mtk-mdp3.ko] undefined!
ERROR: modpost: "mtk_mmsys_mdp_camin_ctrl" [drivers/media/platform/mtk-mdp3/mtk-mdp3.ko] undefined!
ERROR: modpost: "mtk_mmsys_mdp_isp_ctrl" [drivers/media/platform/mtk-mdp3/mtk-mdp3.ko] undefined!
ERROR: modpost: "mtk_mutex_prepare" [drivers/media/platform/mtk-mdp3/mtk-mdp3.ko] undefined!
ERROR: modpost: "mtk_mmsys_mdp_disconnect" [drivers/media/platform/mtk-mdp3/mtk-mdp3.ko] undefined!
ERROR: modpost: "mtk_mutex_unprepare" [drivers/media/platform/mtk-mdp3/mtk-mdp3.ko] undefined!
ERROR: modpost: "mtk_mutex_get_mdp_mod" [drivers/media/platform/mtk-mdp3/mtk-mdp3.ko] undefined!
ERROR: modpost: "mtk_mutex_put" [drivers/media/platform/mtk-mdp3/mtk-mdp3.ko] undefined!
ERROR: modpost: "mtk_mutex_mdp_get" [drivers/media/platform/mtk-mdp3/mtk-mdp3.ko] undefined!
ERROR: modpost: "mtk_mutex_add_mod_by_cmdq" [drivers/media/platform/mtk-mdp3/mtk-mdp3.ko] undefined!
WARNING: modpost: suppressed 1 unresolved symbol warnings because there were too many)

include/linux/soc/mediatek/mtk-mmsys.h should probably provide dummy functions
if CONFIG_MTK_MMSYS is undefined. Ditto for include/linux/soc/mediatek/mtk-mutex.h.

Or add a hard dependency on MTK_MMSYS?
The latter can be enabled when compile-testing.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds