Sascha Hauer [off-list ref] writes:

Hi,

The IPU is the Image Processing Unit found on i.MX51/53 SoCs. It
features several units for image processing, this patch adds support
for the units needed for Framebuffer support, namely:

- Display Controller (dc)
- Display Interface (di)
- Display Multi Fifo Controller (dmfc)
- Display Processor (dp)
- Image DMA Controller (idmac)

This patch is based on the Freescale driver, but follows a different
approach. The Freescale code implements logical idmac channels and
the handling of the subunits is hidden in common idmac code pathes
in big switch/case statements. This patch instead just provides code
and resource management for the different subunits. The user, in this
case the framebuffer driver, decides how the different units play
together.

The IPU has other units missing in this patch:

- CMOS Sensor Interface (csi)
- Video Deinterlacer (vdi)
- Sensor Multi FIFO Controler (smfc)
- Image Converter (ic)
- Image Rotator (irt)

So expect more files to come in this directory.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Cc: linux-kernel@vger.kernel.org
Cc: linux-fbdev@vger.kernel.org
Cc: Paul Mundt <redacted>
Cc: Samuel Ortiz <redacted>
---
 arch/arm/plat-mxc/include/mach/ipu-v3.h |   49 +++
 drivers/video/Kconfig                   |    2 +
 drivers/video/Makefile                  |    1 +
 drivers/video/imx-ipu-v3/Makefile       |    3 +
 drivers/video/imx-ipu-v3/ipu-common.c   |  708 +++++++++++++++++++++++++++++++
 drivers/video/imx-ipu-v3/ipu-cpmem.c    |  612 ++++++++++++++++++++++++++
 drivers/video/imx-ipu-v3/ipu-dc.c       |  364 ++++++++++++++++
 drivers/video/imx-ipu-v3/ipu-di.c       |  550 ++++++++++++++++++++++++
 drivers/video/imx-ipu-v3/ipu-dmfc.c     |  355 ++++++++++++++++
 drivers/video/imx-ipu-v3/ipu-dp.c       |  476 +++++++++++++++++++++
 drivers/video/imx-ipu-v3/ipu-prv.h      |  216 ++++++++++
 include/linux/mfd/imx-ipu-v3.h          |  219 ++++++++++
 12 files changed, 3555 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm/plat-mxc/include/mach/ipu-v3.h
 create mode 100644 drivers/video/imx-ipu-v3/Makefile
 create mode 100644 drivers/video/imx-ipu-v3/ipu-common.c
 create mode 100644 drivers/video/imx-ipu-v3/ipu-cpmem.c
 create mode 100644 drivers/video/imx-ipu-v3/ipu-dc.c
 create mode 100644 drivers/video/imx-ipu-v3/ipu-di.c
 create mode 100644 drivers/video/imx-ipu-v3/ipu-dmfc.c
 create mode 100644 drivers/video/imx-ipu-v3/ipu-dp.c
 create mode 100644 drivers/video/imx-ipu-v3/ipu-prv.h
 create mode 100644 include/linux/mfd/imx-ipu-v3.h

[...]

I don't see such a Kconfig file in this patch. Got lost while moving
from mfd to video ?

 

Now that files are in drivers/video, do we want to keep MFD in the name ?

Arnaud