Commit Graph

66 Commits

Author SHA1 Message Date
Luca Weiss
2f1fc5efe4 media: ov5640: Add support for flash and lens devices
Parse async sub-devices related to the sensor by switching the async
sub-device registration function.

Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-08-15 08:05:57 -03:00
Kieran Bingham
e671499303 media: i2c: Convert to new i2c device probe()
The I2C core framework provides a simplified probe framework from commit
b8a1a4cd5a ("i2c: Provide a temporary .probe_new() call-back type").

These drivers do not utilise the i2c_device_id table in the probe, so we
can easily convert them to utilise the simplified i2c driver
registration.

Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Acked-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-08-13 11:54:04 -03:00
Fabio Estevam
24c8ac8901 media: i2c: ov5640: Fix the order for enabling regulators
According to the OV5640 datasheet the following sequence needs to be
followed when powering the OV5640 supplies:

- DOVDD
- AVDD
- DVDD

So follow this order inside the ov5640_supply_name[] array, so that
the regulator_bulk() functions can enable the regulator in the
correct sequence.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-07-25 06:37:14 -04:00
Fabio Estevam
8791a102ce media: i2c: ov5640: Check for devm_gpiod_get_optional() error
The power down and reset GPIO are optional, but the return value
from devm_gpiod_get_optional() needs to be checked and propagated
in the case of error, so that probe deferral can work.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-07-25 06:36:53 -04:00
Thomas Gleixner
2874c5fd28 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
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 as published by
  the free software foundation either version 2 of the license or at
  your option any later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:32 -07:00
Mauro Carvalho Chehab
f8a7647d31 media: i2c: fix several typos
Use codespell to fix lots of typos over frontends.

Manually verified to avoid false-positives.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-03-01 09:29:58 -05:00
Loic Poulain
1d4c41f3d8 media: i2c: ov5640: Fix post-reset delay
According to the ov5640 specification (2.7 power up sequence), host can
access the sensor's registers 20ms after reset. Trying to access them
before leads to undefined behavior and result in sporadic initialization
errors.

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-02-18 11:38:58 -05:00
Jagan Teki
6530a5eb99 media: ov5640: Fix set 15fps regression
The ov5640_try_frame_interval operation updates the FPS as per user
input based on default ov5640_frame_rate, OV5640_30_FPS which is failed
to update when user trigger 15fps.

So, initialize the default ov5640_frame_rate to OV5640_15_FPS so-that
it can satisfy to update all fps.

Fixes: 5a3ad937bc ("media: ov5640: Make the return rate type more explicit")

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-02-18 11:38:28 -05:00
Chen-Yu Tsai
2b5c18f964 media: ov5640: Consolidate JPEG compression mode setting
The register value lists for all the supported resolution settings all
include a register address/value pair for setting the JPEG compression
mode. With the exception of 1080p (which sets mode 2), all resolutions
use mode 3.

The only difference between mode 2 and mode 3 is that mode 2 may have
padding data on the last line, while mode 3 does not add padding data.

As these register values were from dumps of running systems, and the
difference between the modes is quite small, using mode 3 for all
configurations should be OK.

[Sakari Ailus: Align OV5640_REG_JPG_MODE_SELECT register naming.]

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-02-18 11:31:38 -05:00
Chen-Yu Tsai
7cb013b104 media: ov5640: Set JPEG output timings when outputting JPEG data
When compression is turned on, the on-bus data is framed according to
the compression mode, and the height and width set in VFIFO_VSIZE and
VFIFO_HSIZE. If these are not updated correctly, the sensor will send
data framed in a manner unexpected by the capture interface, such as
having more bytes per line than expected, and having the extra data
dropped. This ultimately results in corrupted data.

Set the two values when the media bus is configured for JPEG data,
meaning the sensor would be in JPEG mode.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-02-18 11:29:56 -05:00
Chen-Yu Tsai
bddc5cdfc8 media: ov5640: Add three more test patterns
The OV5640 driver currently supports a static color bar pattern with a
small vertical gamma gradient. The hardware also supports a color square
pattern, as well as having a rolling bar for dynamic sequences.

Add three more test patterns:

  - color bars with a rolling bar (but without the gamma gradient)
  - static color squares
  - color squares with a rolling bar

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-02-18 11:29:30 -05:00
Chen-Yu Tsai
2aff1fc365 media: ov5640: Disable transparent feature for test pattern
The transparent feature for test patterns blends the test pattern with
an actual captured image. This makes the result non-static, subject to
changes in the sensor's field of view.

Test patterns should be predictable and deterministic, even if they are
dynamic patterns. Disable the transparent feature of the test pattern.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-02-18 11:28:49 -05:00
Chen-Yu Tsai
a0c29afb50 media: ov5640: Add register definition for test pattern register
The OV5640 can generate many types of test patterns, some with
additional modifiers, such as a rolling bar, or gamma gradients.

Add the bit definitions for all bits in the test pattern register,
and use them to compose the values to be written to the register.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-02-18 11:28:20 -05:00
Chen-Yu Tsai
9f6d7bacc7 media: ov5640: Move test_pattern_menu before ov5640_set_ctrl_test_pattern
The OV5640 has many options for generating test patterns. Unfortunately
there is only one V4L2 control for it. Thus the driver would need to
list some or all combinations.

Move the test_pattern_menu list before the ov5640_set_ctrl_test_pattern
function that programs the hardware. This would allow us to add a
matching list of values to program into the hardware, while keeping the
two lists together for ease of maintenance.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-02-18 11:27:18 -05:00
Loic Poulain
b7ed3abd80 media: ov5640: Add RAW bayer format support
OV5640 sensor supports raw image output (bayer).
Configure ISP mux/format registers accordingly.

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-01-16 12:50:49 -05:00
Maxime Ripard
1da3afb58c media: ov5640: Remove duplicate auto-exposure setup
The autoexposure setup in the 1080p init array is redundant with the
default value of the sensor.

Remove it.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Adam Ford <aford173@gmail.com> #imx6dq
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-12-05 06:51:11 -05:00
Maxime Ripard
e823fb165b media: ov5640: Add 60 fps support
Now that we have everything in place to compute the clock rate at runtime,
we can enable the 60fps framerate for the mode we tested it with.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Adam Ford <aford173@gmail.com> #imx6dq
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-12-05 06:50:49 -05:00
Maxime Ripard
f6cc192fbf media: ov5640: Make the FPS clamping / rounding more extendable
The current code uses an algorithm to clamp the FPS values and round them
to the closest supported one that isn't really allows to be extended to
more than two values.

Rework it a bit to make it much easier to extend the amount of FPS options
we support.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Adam Ford <aford173@gmail.com> #imx6dq
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-12-05 06:50:14 -05:00
Maxime Ripard
5a3ad937bc media: ov5640: Make the return rate type more explicit
In the ov5640_try_frame_interval function, the ret variable actually holds
the frame rate index to use, which is represented by the enum
ov5640_frame_rate in the driver.

Make it more obvious.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Adam Ford <aford173@gmail.com> #imx6dq
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-12-05 06:49:43 -05:00
Maxime Ripard
086c25f8fe media: ov5640: Enhance FPS handling
Now that we have moved the clock generation logic out of the bytes array,
these arrays are identical between the 15fps and 30fps variants.

Remove the duplicate entries, and convert the code accordingly.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Adam Ford <aford173@gmail.com> #imx6dq
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-12-05 06:49:16 -05:00
Maxime Ripard
86d81ad9dd media: ov5640: Remove pixel clock rates
The pixel clock rates were introduced to report the initially static clock
rate.

Since this is now handled dynamically, we can remove them entirely.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Adam Ford <aford173@gmail.com> #imx6dq
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-12-05 06:48:29 -05:00
Maxime Ripard
dfbfb7aa83 media: ov5640: Compute the clock rate at runtime
The clock rate, while hardcoded until now, is actually a function of the
resolution, framerate and bytes per pixel. Now that we have an algorithm to
adjust our clock rate, we can select it dynamically when we change the
mode.

This changes a bit the clock rate being used, with the following effect:

+------+------+------+------+-----+-----------------+----------------+-----------+
| Hact | Vact | Htot | Vtot | FPS | Hardcoded clock | Computed clock | Deviation |
+------+------+------+------+-----+-----------------+----------------+-----------+
|  640 |  480 | 1896 | 1080 |  15 |        56000000 |       61430400 | 8.84 %    |
|  640 |  480 | 1896 | 1080 |  30 |       112000000 |      122860800 | 8.84 %    |
| 1024 |  768 | 1896 | 1080 |  15 |        56000000 |       61430400 | 8.84 %    |
| 1024 |  768 | 1896 | 1080 |  30 |       112000000 |      122860800 | 8.84 %    |
|  320 |  240 | 1896 |  984 |  15 |        56000000 |       55969920 | 0.05 %    |
|  320 |  240 | 1896 |  984 |  30 |       112000000 |      111939840 | 0.05 %    |
|  176 |  144 | 1896 |  984 |  15 |        56000000 |       55969920 | 0.05 %    |
|  176 |  144 | 1896 |  984 |  30 |       112000000 |      111939840 | 0.05 %    |
|  720 |  480 | 1896 |  984 |  15 |        56000000 |       55969920 | 0.05 %    |
|  720 |  480 | 1896 |  984 |  30 |       112000000 |      111939840 | 0.05 %    |
|  720 |  576 | 1896 |  984 |  15 |        56000000 |       55969920 | 0.05 %    |
|  720 |  576 | 1896 |  984 |  30 |       112000000 |      111939840 | 0.05 %    |
| 1280 |  720 | 1892 |  740 |  15 |        42000000 |       42002400 | 0.01 %    |
| 1280 |  720 | 1892 |  740 |  30 |        84000000 |       84004800 | 0.01 %    |
| 1920 | 1080 | 2500 | 1120 |  15 |        84000000 |       84000000 | 0.00 %    |
| 1920 | 1080 | 2500 | 1120 |  30 |       168000000 |      168000000 | 0.00 %    |
| 2592 | 1944 | 2844 | 1944 |  15 |        84000000 |      165862080 | 49.36 %   |
+------+------+------+------+-----+-----------------+----------------+-----------+

Only the 640x480, 1024x768 and 2592x1944 modes are significantly affected
by the new formula.

In this case, 640x480 and 1024x768 are actually fixed by this change.
Indeed, the sensor was sending data at, for example, 27.33fps instead of
30fps. This is -9%, which is roughly what we're seeing in the array.
Testing these modes with the new clock setup actually fix that error, and
data are now sent at around 30fps.

2592x1944, on the other hand, is probably due to the fact that this mode
can only be used using MIPI-CSI2, in a two lane mode, and never really
tested with a DVP bus.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Adam Ford <aford173@gmail.com> #imx6dq
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-12-05 06:47:33 -05:00
Maxime Ripard
a9e17125a5 media: ov5640: Remove redundant register setup
The MIPI divider is also cleared as part of the clock setup sequence, so we
can remove that code.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Adam Ford <aford173@gmail.com> #imx6dq
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-12-05 06:47:05 -05:00
Maxime Ripard
7851fe7ad4 media: ov5640: Remove redundant defines
The OV5640_SCLK2X_ROOT_DIVIDER_DEFAULT and OV5640_SCLK_ROOT_DIVIDER_DEFAULT
defines represent exactly the same setup, and are at the same value, than
the more consistent with the rest of the driver OV5640_SCLK2X_ROOT_DIV and
OV5640_SCLK_ROOT_DIV.

Remove them.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Adam Ford <aford173@gmail.com> #imx6dq
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-12-05 06:46:44 -05:00
Maxime Ripard
c14d107e74 media: ov5640: Remove the clocks registers initialization
Part of the hardcoded initialization sequence is to set up the proper clock
dividers. However, this is now done dynamically through proper code and as
such, the static one is now redundant.

Let's remove it.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Adam Ford <aford173@gmail.com> #imx6dq
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-12-05 06:46:13 -05:00
Maxime Ripard
aa2882481c media: ov5640: Adjust the clock based on the expected rate
The clock structure for the PCLK is quite obscure in the documentation, and
was hardcoded through the bytes array of each and every mode.

This is troublesome, since we cannot adjust it at runtime based on other
parameters (such as the number of bytes per pixel), and we can't support
either framerates that have not been used by the various vendors, since we
don't have the needed initialization sequence.

We can however understand how the clock tree works, and then implement some
functions to derive the various parameters from a given rate. And now that
those parameters are calculated at runtime, we can remove them from the
initialization sequence.

The modes also gained a new parameter which is the clock that they are
running at, from the register writes they were doing, so for now the switch
to the new algorithm should be transparent.

Co-Developed-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Tested-by: Adam Ford <aford173@gmail.com> #imx6dq
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-12-05 06:45:19 -05:00
Jacopo Mondi
0711544991 media: ov5640: Fix set format regression
The set_fmt operations updates the sensor format only when the image format
is changed. When only the image sizes gets changed, the format do not get
updated causing the sensor to always report the one that was previously in
use.

Without this patch, updating frame size only fails:
  [fmt:UYVY8_2X8/640x480@1/30 field:none colorspace:srgb xfer:srgb ...]

With this patch applied:
  [fmt:UYVY8_2X8/1024x768@1/30 field:none colorspace:srgb xfer:srgb ...]

Fixes: 6949d86477 ("media: ov5640: do not change mode if format or frame interval is unchanged")

Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Adam Ford <aford173@gmail.com> #imx6 w/ CSI2 interface on 4.19.6 and 4.20-RC5
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-12-05 06:43:41 -05:00
Akinobu Mita
2d18fbc551 media: ov5640: support log_status ioctl and event interface
This adds log_status ioctl and event interface for ov5640's v4l2 controls.

Cc: Steve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-11-23 04:46:46 -05:00
Hugues Fruchet
0929983e49 media: ov5640: fix framerate update
Changing framerate right before streamon had no effect,
the new framerate value was taken into account only at
next streamon, fix this.

Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-10-05 11:04:39 -04:00
Sakari Ailus
2d95e7ed07 media: v4l: mediabus: Recognise CSI-2 D-PHY and C-PHY
The CSI-2 bus may use either D-PHY or C-PHY. Make this visible in media
bus enum.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-10-04 16:06:15 -04:00
Hugues Fruchet
b791187b00 media: ov5640: use JPEG mode 3 for 720p
Change 720p JPEG mode to mode 3 as per other resolutions.

Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-10-03 11:58:43 -04:00
Hugues Fruchet
985cdcb08a media: ov5640: fix restore of last mode set
Mode setting depends on last mode set, in particular
because of exposure calculation when downscale mode
change between subsampling and scaling.
At stream on the last mode was wrongly set to current mode,
so no change was detected and exposure calculation
was not made, fix this.

Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Tested-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-09-17 15:33:38 -04:00
Hugues Fruchet
a8f438c684 media: ov5640: fix auto controls values when switching to manual mode
When switching from auto to manual mode, V4L2 core is calling
g_volatile_ctrl() in manual mode in order to get the manual initial value.
Remove the manual mode check/return to not break this behaviour.

Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>
Tested-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-09-17 15:32:45 -04:00
Hugues Fruchet
c2c3f42df4 media: ov5640: fix wrong binning value in exposure calculation
ov5640_set_mode_exposure_calc() is checking binning value but
binning value read is buggy, fix this.
Rename ov5640_binning_on() to ov5640_get_binning() as per other
similar functions.

Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-09-17 15:31:55 -04:00
Hugues Fruchet
3cca8ef5f7 media: ov5640: fix auto gain & exposure when changing mode
Ensure that auto gain and auto exposure are well restored
when changing mode.

Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Tested-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-09-17 15:31:28 -04:00
Hugues Fruchet
dc29a1c187 media: ov5640: fix exposure regression
Symptom was black image when capturing HD or 5Mp picture
due to manual exposure set to 1 while it was intended to
set autoexposure to "manual", fix this.

Fixes: bf4a4b518c ("media: ov5640: Don't force the auto exposure state at start time").

Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-09-17 15:24:34 -04:00
Jacopo Mondi
bad1774ed4 media: ov5640: Fix timings setup code
As of: commit 476dec012f ("media: ov5640: Add horizontal and vertical
totals") the timings parameters gets programmed separately from the
static register values array.

When changing capture mode, the vertical and horizontal totals gets
inspected by the set_mode_exposure_calc() functions, and only later
programmed with the new values. This means exposure, light banding
filter and shutter gain are calculated using the previous timings, and
are thus not correct.

Fix this by programming timings right after the static register value
table has been sent to the sensor in the ov5640_load_regs() function.

Fixes: 476dec012f ("media: ov5640: Add horizontal and vertical totals")

Tested-by: Steve Longerbeam <slongerbeam@gmail.com> # i.MX6q SabreSD, CSI-2
Tested-by: Loic Poulain <loic.poulain@linaro.org> # Dragonboard-410c, CSI-2
Signed-off-by: Samuel Bobrowicz <sam@elite-embedded.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-09-17 15:23:59 -04:00
Jacopo Mondi
aa4bb8b883 media: ov5640: Re-work MIPI startup sequence
Rework the MIPI interface startup sequence with the following changes:

- Remove MIPI bus initialization from the initial settings blob
- At set_power(1) time power up MIPI Tx/Rx and set data and clock lanes in
  LP11 during 'sleep' and 'idle' with MIPI clock in non-continuous mode.
- At s_stream time enable/disable the MIPI interface output.
- Restore default settings at set_power(0) time.

Before this commit the sensor MIPI interface was initialized with settings
that require a start/stop sequence at power-up time in order to force lanes
into LP11 state, as they were initialized in LP00 when in 'sleep mode',
which is assumed to be the sensor manual definition for the D-PHY defined
stop mode.

The stream start/stop was performed by enabling disabling clock gating,
and had the side effect to change the lanes sleep mode configuration when
stream was stopped.

Clock gating/ungating:
-       ret = ov5640_mod_reg(sensor, OV5640_REG_MIPI_CTRL00, BIT(5),
-                            on ? 0 : BIT(5));
-       if (ret)

Set lanes in LP11 when in 'sleep mode':
-       ret = ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT00,
-                              on ? 0x00 : 0x70);

This commit fixes an issue reported by Jagan Teki on i.MX6 platforms that
prevents the host interface from powering up correctly:
https://lkml.org/lkml/2018/6/1/38

It also improves MIPI capture operations stability on my testing platform
where MIPI capture often failed and returned all-purple frames.

Fixes: f22996db44 ("media: ov5640: add support of DVP parallel interface")

Tested-by: Steve Longerbeam <slongerbeam@gmail.com> (i.MX6q SabreSD, CSI-2)
Tested-by: Loic Poulain <loic.poulain@linaro.org> (Dragonboard-410c, CSI-2)
Reported-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-09-17 15:21:48 -04:00
Hugues Fruchet
fb98e29ff1 media: ov5640: fix mode change regression
fixes: 6949d86477 ("media: ov5640: do not change mode if format or frame interval is unchanged").

Symptom was fuzzy image because of JPEG default format
not being changed according to new format selected, fix this.
Init sequence initialises format to YUV422 UYVY but
sensor->fmt initial value was set to JPEG, fix this.

Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-08-31 09:29:48 -04:00
Hugues Fruchet
6949d86477 media: ov5640: do not change mode if format or frame interval is unchanged
Save load of mode registers array when V4L2 client sets a format or a
frame interval which selects the same mode than the current one.

Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-07-24 14:53:36 -04:00
Hugues Fruchet
3c4a737267 media: ov5640: fix frame interval enumeration
Driver must reject frame interval enumeration of unsupported resolution.
This was detected by v4l2-compliance format ioctl test:
v4l2-compliance Format ioctls:
    info: found 2 frameintervals for pixel format 4745504a and size 176x144
  fail: v4l2-test-formats.cpp(123):
                           found frame intervals for invalid size 177x144
    test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: FAIL

Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-06-28 09:24:38 -04:00
Philipp Puschmann
41cb1c739d media: ov5640: adjust xclk_max
According to ov5640 datasheet xvclk is allowed to be between 6 and 54 MHz.
I run a successful test with 27 MHz.

Signed-off-by: Philipp Puschmann <pp@emlix.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-06-28 09:23:23 -04:00
Hugues Fruchet
c3f3ba3e6f media: ov5640: add support of module orientation
Add support of module being physically mounted upside down.
In this case, mirror and flip are enabled to fix captured images
orientation.

[Sakari Ailus: Use dev_fwnode() instead of accessing device's of_node]

Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-06-28 08:45:56 -04:00
Hugues Fruchet
ce85705a2a media: ov5640: add HFLIP/VFLIP controls support
Add HFLIP/VFLIP controls support by setting registers REG21/REG20.
Useless values in hardcoded mode sequences are removed and
remaining binning values are now set after mode sequence being set.
Note that due to BSI (Back Side Illuminated) technology, image capture
is physically mirrored, mirror logic is so inversed in REG21 register
to cancel this effect.

Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-06-28 08:45:05 -04:00
Maxime Ripard
8663341799 media: ov5640: Program the visible resolution
The active frame size is set in the initialization arrays, but the value
itself is also available in the struct ov5640_mode_info.

Let's move these values out of the big bytes arrays, and program it with
the value of the mode that we are given.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-05-17 06:22:08 -04:00
Maxime Ripard
476dec012f media: ov5640: Add horizontal and vertical totals
All the initialization arrays are changing the horizontal and vertical
totals for some value.

In order to clean up the driver, and since we're going to need that value
later on, let's introduce in the ov5640_mode_info structure the horizontal
and vertical total sizes, and move these out of the bytes array.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-05-17 06:22:08 -04:00
Maxime Ripard
dba13a0b08 media: ov5640: Change horizontal and vertical resolutions name
The current width and height parameters in the struct ov5640_mode_info are
actually the active horizontal and vertical resolutions.

Since we're going to add a few other parameters, let's pick a better, more
precise name for these values.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-05-17 06:22:08 -04:00
Maxime Ripard
8f57c2f86b media: ov5640: Init properly the SCLK dividers
The SCLK and SCLK2X dividers are fixed in stone in the initialization
array. Let's make explicit what we're doing and move that away from the
huge array to the initialization code.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-05-17 06:22:08 -04:00
Maxime Ripard
bf4a4b518c media: ov5640: Don't force the auto exposure state at start time
The sensor needs to have the auto exposure stopped while changing mode.
However, when the new mode is set, the driver will force the auto exposure
on, disregarding whether the control has been changed or not.

Bypass the controls code entirely to do that, and only use the control
value cached when restoring the auto exposure mode.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-05-17 06:22:08 -04:00
Mylène Josserand
1068fecacf media: ov5640: Add light frequency control
Add the light frequency control to be able to set the frequency
to manual (50Hz or 60Hz) or auto.

[Sakari Ailus: Rename "ctl" as "ctrl" as agreed.]
[mchehab+samsung@kernel.org: fixed two coding style warnings]

Signed-off-by: Mylène Josserand <mylene.josserand@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-05-17 06:22:08 -04:00