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path: root/drivers/media/i2c/smiapp/smiapp-core.c
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2020-12-02media: smiapp: Internal rename to CCSSakari Ailus
Rename internal names to reflect the driver's new reference. The module name remains the same. Also fix trivial coding style issues on the way related to e.g. alignment changes due to the rename. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-12-02media: smiapp: Rename register access functionsSakari Ailus
Rename register access functions by changing smiapp to ccs. The functions operating on register addresses have "addr" appended to the name. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-12-02media: smiapp: Use CCS registersSakari Ailus
Switch to CCS standard registers where they exist. The still relevant SMIA registers are left as-is and the redundant ones are removed. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-12-02media: smiapp: Use CCS limits in reading binning capabilitiesSakari Ailus
Use CCS limits for obtaining binning capabilities and subtypes. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-12-02media: smiapp: Use CCS limits in reading data format descriptorsSakari Ailus
The CCS limits have the information so use it instead. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-12-02media: smiapp: Obtain frame descriptor from CCS limitsSakari Ailus
Obtain the frame descriptor from the CCS limits, instead of reading them directly from the frame descriptor registers. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-12-02media: smiapp: Switch to CCS limitsSakari Ailus
Use the CCS limit definitions instead of the SMIA ones. This allows accessing CCS capabilities where needed as well as dropping the old SMIA limits. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-12-02media: smiapp: Read CCS limit valuesSakari Ailus
Read limit and capability values into a driver allocated buffer. This will later replace (most of) the existing SMIA limits. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-12-02media: smiapp: Use MIPI CCS version and manufacturer ID informationSakari Ailus
Read MIPI CCS manufacturer and version information, and use the CCS IDs over SMIA whenever they are set. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-12-02media: smiapp: Calculate CCS limit offsets and limit buffer sizeSakari Ailus
Calculate the limit offsets and the size of the limit buffer. CCS limits are read into this buffer, and the offsets are helpful in accessing the information in it. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-11-16media: i2c: smiapp: simplify getting state containerKrzysztof Kozlowski
The pointer to 'struct v4l2_subdev' is stored in drvdata via v4l2_i2c_subdev_init() so there is no point of a dance like: struct i2c_client *client = to_i2c_client(struct device *dev) struct v4l2_subdev *sd = i2c_get_clientdata(client); This allows to remove local variable 'client' and few pointer dereferences. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-08-29media: Use fallthrough pseudo-keywordGustavo A. R. Silva
Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-06-23media: smiapp: Use pm_runtime_get_if_activeSakari Ailus
Use the convenience function pm_runtime_get_if_active() instead of a number of calls to runtime PM to figure out if the device was already powered up. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-06-23media: smiapp: Fix runtime PM imbalance on errorDinghao Liu
When v4l2_async_register_subdev_sensor_common() returns an error code, a pairing runtime PM usage counter decrement is needed to keep the counter balanced. Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-02-27media: smiapp: Refactor reading SMIA limitsSakari Ailus
Combine the two trivial functions reading limits into one. Also rename smiapp_get_all_limits() as smiapp_read_all_smia_limits(). Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2020-02-27media: smiapp: Move SMIA limit reading upSakari Ailus
Move SMIA limit reading up, where other limit and capability handling takes place. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2020-02-27media: smiapp: Turn limit lookup into a functionSakari Ailus
Instead of direct array access, turn accessing limit information into a function. Going forward, more elaborate CCS limits will replace most SMIA limits, and conversion will be less complicated this way. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2020-01-03media: smiapp: Put the device again if starting streaming failsSakari Ailus
If there was an error in starting streaming, put the runtime usage count of the device. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-01-03media: smiapp: Avoid maintaining power state informationSakari Ailus
Instead of keeping track of the power state ourselves, let runtime PM handle it. This also splits handling controls between side effect management and writing the new configuration to the sensor's registers. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2019-11-05media: smiapp: unlock on error in smiapp_start_streaming()Dan Carpenter
We added two new error paths to smiapp_start_streaming(), but we can't return directly without dropping the "sensor->mutex" lock. Fixes: f8c4352c1bef ("media: smiapp: Move binning configuration to streaming start") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-10-24media: smiapp: Rename update_mode as pll_blanking_updateSakari Ailus
Rename the confusingly named smiapp_update_mode() function as smiapp_pll_blanking_update(). The function is used to calculate new PLL and blanking configuration after binning or scaling configuration has been changed. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-10-24media: smiapp: Register sensor after enabling runtime PM on the deviceSakari Ailus
Earlier it was possible that the parts of the driver that assumed runtime PM was enabled were being called before runtime PM was enabled in the driver's probe function. So enable runtime PM before registering the sub-device. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-10-24media: smiapp: Use non-binned and binned limits correctlySakari Ailus
Use non-binned limits when binning is disabled and binned when they're enabled. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-10-24media: smiapp: Don't update sensor configuration during power-on initSakari Ailus
The sensor configuration since it was previously powered off was not changed, so no need to update the PLL configuration etc. What is necessary though is to re-apply the configuration to the sensor's registers. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-10-24media: smiapp: Move binning configuration to streaming startSakari Ailus
Only write the binning configuration at stream start. It has no effect otherwise. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-10-24media: smiapp: Don't get binning limits dynamicallySakari Ailus
The driver implementation assumed the binning limits could change dynamically based on the binning configuration. This is not actually the case; these limits are static and suitable to be used with all binning configurations but possibly not optimal limit for many of those configurations. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-10-24media: smiapp: Destroy sensor's mutexSakari Ailus
Destroy the mutex initialised by the driver in probe. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-10-24media: smiapp: Support probing NVM sizeSakari Ailus
The interface supports probing for the NVM size but this was not implemented in the driver. Do that now. This will also make nokia,nvm-size property redundant. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-10-24media: smiapp: Don't poll for NVM ready on devices that don't need itSakari Ailus
Only some devices require polling for NVM ready. Do the polling only on devices that need it. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-10-24media: smiapp: Refactor reading NVM pageSakari Ailus
Split out reading a single NVM page into a separate function. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-10-24media: smiapp: Fix error handling at NVM readingSakari Ailus
If NVM reading failed, the device was left powered on. Fix that. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-10-24media: smiapp: Use the BIT macro where appropriate, remove useless definitionSakari Ailus
The BIT macro is a better way to define register bits, for 1 << bit is risky for 32-bit registers. Also remove the definition of SMIAPP_DATA_TRANSFER_IF_1_CTRL_RD_EN which has a value of zero. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-08-13media: i2c: smiapp: Convert to new i2c device probe()Kieran Bingham
The I2C core framework provides a simplified probe framework from commit b8a1a4cd5a98 ("i2c: Provide a temporary .probe_new() call-back type"). This driver does not utilise the i2c_device_id table in the probe, so we can easily convert it to utilise the simplified i2c driver registration. Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.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>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174Thomas Gleixner
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 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 655 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-04media: smiapp: Query the V4L2 endpoint for a specific bus typeSakari Ailus
Instead of opportunistically trying to gather some information from the V4L2 endpoint, set the bus type and let the V4L2 fwnode framework figure out the configuration. 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>
2018-10-04media: v4l: fwnode: Let the caller provide V4L2 fwnode endpointSakari Ailus
Instead of allocating the V4L2 fwnode endpoint in v4l2_fwnode_endpoint_alloc_parse, let the caller to do this. This allows setting default parameters for the endpoint which is a very common need for drivers. 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>
2018-10-04media: v4l: mediabus: Recognise CSI-2 D-PHY and C-PHYSakari Ailus
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>
2018-10-03media: smiapp: Remove unused loopRicardo Ribalda Delgado
The loop seemed to be made to calculate max, but max is not used in that function. Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-09-17media: smiapp: Use v4l2_i2c_subdev_set_nameSakari Ailus
Use v4l2_i2c_subdev_set_name() to set the name of the smiapp driver's sub-devices. There is no functional change. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-07-24media: smiapp: fix debug messageLuca Ceresoli
ask_h gets printed here instead of ask_w. Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-07-24media: smiapp: Set correct MODULE_LICENSESakari Ailus
The smiapp driver is licensed under GNU GPL v2 only, as stated by the header. Reflect this in the MODULE_LICENSE macro. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-06-28media: smiapp: Support the "rotation" propertySakari Ailus
Use the "rotation" property to tell that the sensor is mounted upside down. This reverses the behaviour of the VFLIP and HFLIP controls as well as the pixel order. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-05-17media: smiapp: fix timeout checking in smiapp_read_nvmColin Ian King
The current code decrements the timeout counter i and the end of each loop i is incremented, so the check for timeout will always be false and hence the timeout mechanism is just a dead code path. Potentially, if the RD_READY bit is not set, we could end up in an infinite loop. Fix this so the timeout starts from 1000 and decrements to zero, if at the end of the loop i is zero we have a timeout condition. Detected by CoverityScan, CID#1324008 ("Logically dead code") Fixes: ccfc97bdb5ae ("[media] smiapp: Add driver") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-01-04media: fix usage of whitespaces and on indentationMauro Carvalho Chehab
On several places, whitespaces are being used for indentation, or even at the end of the line. Fix them. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-10-31media: smiapp: Add support for flash and lens devicesSakari Ailus
Parse async sub-devices related to the sensor by switching the async sub-device registration function. These types devices aren't directly related to the sensor, but are nevertheless handled by the smiapp driver due to the relationship of these component to the main part of the camera module --- the sensor. This does not yet address providing the user space with information on how to associate the sensor or lens devices but the kernel now has the necessary information to do that. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Pavel Machek <pavel@ucw.cz> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-10-24media: smiapp: Rely on runtime PMSakari Ailus
Instead of relying on a mix of runtime PM and the s_power() callback, drop the s_power() callback altogether and use runtime PM solely. As device access is required during device power-on and power-off sequences, runtime PM alone cannot tell whether the device is available. Thus the "active" field is introduced in struct smiapp_sensor to tell whether it is safe to write to the device. Consequently there is no need to power on the device whenever a file handle is open. This functionality is removed as well. The user may still control the device power management through sysfs. Autosuspend remains enabled, with 1 s delay. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2017-10-24media: smiapp: Use __v4l2_ctrl_handler_setup()Sakari Ailus
Use unlocked __v4l2_ctrl_handler_setup() in order to make the control setup atomic. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2017-10-04[media] smiapp: Make clock control optionalSakari Ailus
The clock control is not explicitly controlled by the driver in two cases: ACPI based systems and when the clock is part of the power sequence of the camera module. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2017-10-04[media] smiapp: Get clock rate if it's not available through DTSakari Ailus
Obtain the clock rate from the clock framework if it's not available through DT. The assumption is that the parent device (camera module) defines the rate as clock control is a part of the power on and power off sequences --- which are camera module specific. Also use the clock rate from DT if no clock is provided. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2017-10-04[media] smiapp: Verify clock frequency after setting it, prevent changing itSakari Ailus
The external clock frequency was set by the driver but the obtained frequency was never verified. Do that. Being able to obtain the exact frequency is important as the value is used for PLL calculations which may result in frequencies that violate the PLL tree limits. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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