Hi,
Here is a "small" series that mostly cleans up the ov5640 driver code,
slowly getting rid of the big data array for more understandable code
(hopefully).
The biggest addition would be the clock rate computation at runtime,
instead of relying on those arrays to setup the clock tree
properly. As a side effect, it fixes the framerate that was off by
around 10% on the smaller resolutions, and we now support 60fps.
This also introduces a bunch of new features.
Let me know what you think,
Maxime
Changes from v4:
- Squashed Jacopo patches fixing the MIPI-CSI case
- Prefer clock rates superior to the ideal clock rate, even if it
means having a less precise one.
- Fix the JPEG case according to Hugues suggestions
- Rebased on 4.20
Changes from v3:
- Rebased on current Sakari tree
- Fixed an error when changing only the framerate
Changes from v2:
- Rebased on latest Sakari PR
- Fixed the issues reported by Hugues: improper FPS returned for
formats, improper rounding of the FPS, some with his suggestions,
some by simplifying the logic.
- Expanded the clock tree comments based on the feedback from Samuel
Bobrowicz and Loic Poulain
- Merged some of the changes made by Samuel Bobrowicz to fix the
MIPI rate computation, fix the call sites of the
ov5640_set_timings function, the auto-exposure calculation call,
etc.
- Split the patches into smaller ones in order to make it more
readable (hopefully)
Changes from v1:
- Integrated Hugues' suggestions to fix v4l2-compliance
- Fixed the bus width with JPEG
- Dropped the clock rate calculation loops for something simpler as
suggested by Sakari
- Cache the exposure value instead of using the control value
- Rebased on top of 4.17
Maxime Ripard (11):
media: ov5640: Adjust the clock based on the expected rate
media: ov5640: Remove the clocks registers initialization
media: ov5640: Remove redundant defines
media: ov5640: Remove redundant register setup
media: ov5640: Compute the clock rate at runtime
media: ov5640: Remove pixel clock rates
media: ov5640: Enhance FPS handling
media: ov5640: Make the return rate type more explicit
media: ov5640: Make the FPS clamping / rounding more extendable
media: ov5640: Add 60 fps support
media: ov5640: Remove duplicate auto-exposure setup
drivers/media/i2c/ov5640.c | 748 ++++++++++++++++++++++---------------
1 file changed, 445 insertions(+), 303 deletions(-)
--
2.19.1
