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![Jacopo Mondi](/assets/img/avatar_default.png)
Fix error handling of v4l2_ctrl creation by inspecting the ctrl.error flag
instead of testing for each returned value correctness.
As reported by Dan Carpenter returning PTR_ERR() on the v4l2_ctrl_new_std()
return value is also wrong, as that function return NULL on error.
While at there re-order the cleanup path to respect the operation inverse
order.
Fixes: aab7ed1c
"media: i2c: Add driver for Aptina MT9V111"
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
1283 lines
32 KiB
C
1283 lines
32 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* V4L2 sensor driver for Aptina MT9V111 image sensor
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* Copyright (C) 2018 Jacopo Mondi <jacopo@jmondi.org>
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*
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* Based on mt9v032 driver
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* Copyright (C) 2010, Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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* Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
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*
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* Based on mt9v011 driver
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* Copyright (c) 2009 Mauro Carvalho Chehab <mchehab@kernel.org>
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*/
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#include <linux/clk.h>
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#include <linux/delay.h>
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#include <linux/gpio/consumer.h>
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#include <linux/i2c.h>
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#include <linux/of.h>
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#include <linux/slab.h>
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#include <linux/videodev2.h>
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#include <linux/v4l2-mediabus.h>
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#include <linux/module.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-fwnode.h>
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#include <media/v4l2-image-sizes.h>
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#include <media/v4l2-subdev.h>
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/*
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* MT9V111 is a 1/4-Inch CMOS digital image sensor with an integrated
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* Image Flow Processing (IFP) engine and a sensor core loosely based on
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* MT9V011.
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*
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* The IFP can produce several output image formats from the sensor core
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* output. This driver currently supports only YUYV format permutations.
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*
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* The driver allows manual frame rate control through s_frame_interval subdev
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* operation or V4L2_CID_V/HBLANK controls, but it is known that the
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* auto-exposure algorithm might modify the programmed frame rate. While the
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* driver initially programs the sensor with auto-exposure and
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* auto-white-balancing enabled, it is possible to disable them and more
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* precisely control the frame rate.
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*
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* While it seems possible to instruct the auto-exposure control algorithm to
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* respect a programmed frame rate when adjusting the pixel integration time,
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* registers controlling this feature are not documented in the public
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* available sensor manual used to develop this driver (09005aef80e90084,
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* MT9V111_1.fm - Rev. G 1/05 EN).
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*/
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#define MT9V111_CHIP_ID_HIGH 0x82
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#define MT9V111_CHIP_ID_LOW 0x3a
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#define MT9V111_R01_ADDR_SPACE 0x01
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#define MT9V111_R01_IFP 0x01
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#define MT9V111_R01_CORE 0x04
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#define MT9V111_IFP_R06_OPMODE_CTRL 0x06
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#define MT9V111_IFP_R06_OPMODE_CTRL_AWB_EN BIT(1)
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#define MT9V111_IFP_R06_OPMODE_CTRL_AE_EN BIT(14)
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#define MT9V111_IFP_R07_IFP_RESET 0x07
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#define MT9V111_IFP_R07_IFP_RESET_MASK BIT(0)
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#define MT9V111_IFP_R08_OUTFMT_CTRL 0x08
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#define MT9V111_IFP_R08_OUTFMT_CTRL_FLICKER BIT(11)
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#define MT9V111_IFP_R08_OUTFMT_CTRL_PCLK BIT(5)
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#define MT9V111_IFP_R3A_OUTFMT_CTRL2 0x3a
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#define MT9V111_IFP_R3A_OUTFMT_CTRL2_SWAP_CBCR BIT(0)
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#define MT9V111_IFP_R3A_OUTFMT_CTRL2_SWAP_YC BIT(1)
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#define MT9V111_IFP_R3A_OUTFMT_CTRL2_SWAP_MASK GENMASK(2, 0)
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#define MT9V111_IFP_RA5_HPAN 0xa5
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#define MT9V111_IFP_RA6_HZOOM 0xa6
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#define MT9V111_IFP_RA7_HOUT 0xa7
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#define MT9V111_IFP_RA8_VPAN 0xa8
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#define MT9V111_IFP_RA9_VZOOM 0xa9
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#define MT9V111_IFP_RAA_VOUT 0xaa
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#define MT9V111_IFP_DECIMATION_MASK GENMASK(9, 0)
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#define MT9V111_IFP_DECIMATION_FREEZE BIT(15)
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#define MT9V111_CORE_R03_WIN_HEIGHT 0x03
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#define MT9V111_CORE_R03_WIN_V_OFFS 2
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#define MT9V111_CORE_R04_WIN_WIDTH 0x04
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#define MT9V111_CORE_R04_WIN_H_OFFS 114
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#define MT9V111_CORE_R05_HBLANK 0x05
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#define MT9V111_CORE_R05_MIN_HBLANK 0x09
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#define MT9V111_CORE_R05_MAX_HBLANK GENMASK(9, 0)
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#define MT9V111_CORE_R05_DEF_HBLANK 0x26
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#define MT9V111_CORE_R06_VBLANK 0x06
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#define MT9V111_CORE_R06_MIN_VBLANK 0x03
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#define MT9V111_CORE_R06_MAX_VBLANK GENMASK(11, 0)
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#define MT9V111_CORE_R06_DEF_VBLANK 0x04
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#define MT9V111_CORE_R07_OUT_CTRL 0x07
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#define MT9V111_CORE_R07_OUT_CTRL_SAMPLE BIT(4)
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#define MT9V111_CORE_R09_PIXEL_INT 0x09
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#define MT9V111_CORE_R09_PIXEL_INT_MASK GENMASK(11, 0)
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#define MT9V111_CORE_R0D_CORE_RESET 0x0d
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#define MT9V111_CORE_R0D_CORE_RESET_MASK BIT(0)
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#define MT9V111_CORE_RFF_CHIP_VER 0xff
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#define MT9V111_PIXEL_ARRAY_WIDTH 640
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#define MT9V111_PIXEL_ARRAY_HEIGHT 480
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#define MT9V111_MAX_CLKIN 27000000
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/* The default sensor configuration at startup time. */
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static struct v4l2_mbus_framefmt mt9v111_def_fmt = {
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.width = 640,
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.height = 480,
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.code = MEDIA_BUS_FMT_UYVY8_2X8,
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.field = V4L2_FIELD_NONE,
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.colorspace = V4L2_COLORSPACE_SRGB,
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.ycbcr_enc = V4L2_YCBCR_ENC_601,
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.quantization = V4L2_QUANTIZATION_LIM_RANGE,
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.xfer_func = V4L2_XFER_FUNC_SRGB,
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};
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struct mt9v111_dev {
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struct device *dev;
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struct i2c_client *client;
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u8 addr_space;
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struct v4l2_subdev sd;
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#if IS_ENABLED(CONFIG_MEDIA_CONTROLLER)
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struct media_pad pad;
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#endif
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struct v4l2_ctrl *auto_awb;
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struct v4l2_ctrl *auto_exp;
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struct v4l2_ctrl *hblank;
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struct v4l2_ctrl *vblank;
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struct v4l2_ctrl_handler ctrls;
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/* Output image format and sizes. */
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struct v4l2_mbus_framefmt fmt;
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unsigned int fps;
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/* Protects power up/down sequences. */
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struct mutex pwr_mutex;
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int pwr_count;
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/* Protects stream on/off sequences. */
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struct mutex stream_mutex;
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bool streaming;
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/* Flags to mark HW settings as not yet applied. */
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bool pending;
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/* Clock provider and system clock frequency. */
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struct clk *clk;
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u32 sysclk;
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struct gpio_desc *oe;
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struct gpio_desc *standby;
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struct gpio_desc *reset;
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};
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#define sd_to_mt9v111(__sd) container_of((__sd), struct mt9v111_dev, sd)
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/*
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* mt9v111_mbus_fmt - List all media bus formats supported by the driver.
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*
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* Only list the media bus code here. The image sizes are freely configurable
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* in the pixel array sizes range.
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*
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* The desired frame interval, in the supported frame interval range, is
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* obtained by configuring blanking as the sensor does not have a PLL but
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* only a fixed clock divider that generates the output pixel clock.
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*/
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static struct mt9v111_mbus_fmt {
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u32 code;
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} mt9v111_formats[] = {
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{
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.code = MEDIA_BUS_FMT_UYVY8_2X8,
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},
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{
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.code = MEDIA_BUS_FMT_YUYV8_2X8,
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},
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{
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.code = MEDIA_BUS_FMT_VYUY8_2X8,
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},
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{
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.code = MEDIA_BUS_FMT_YVYU8_2X8,
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},
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};
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static u32 mt9v111_frame_intervals[] = {5, 10, 15, 20, 30};
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/*
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* mt9v111_frame_sizes - List sensor's supported resolutions.
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*
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* Resolution generated through decimation in the IFP block from the
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* full VGA pixel array.
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*/
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static struct v4l2_rect mt9v111_frame_sizes[] = {
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{
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.width = 640,
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.height = 480,
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},
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{
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.width = 352,
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.height = 288
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},
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{
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.width = 320,
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.height = 240,
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},
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{
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.width = 176,
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.height = 144,
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},
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{
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.width = 160,
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.height = 120,
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},
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};
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/* --- Device I/O access --- */
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static int __mt9v111_read(struct i2c_client *c, u8 reg, u16 *val)
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{
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struct i2c_msg msg[2];
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__be16 buf;
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int ret;
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msg[0].addr = c->addr;
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msg[0].flags = 0;
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msg[0].len = 1;
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msg[0].buf = ®
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msg[1].addr = c->addr;
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msg[1].flags = I2C_M_RD;
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msg[1].len = 2;
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msg[1].buf = (char *)&buf;
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ret = i2c_transfer(c->adapter, msg, 2);
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if (ret < 0) {
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dev_err(&c->dev, "i2c read transfer error: %d\n", ret);
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return ret;
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}
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*val = be16_to_cpu(buf);
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dev_dbg(&c->dev, "%s: %x=%x\n", __func__, reg, *val);
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return 0;
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}
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static int __mt9v111_write(struct i2c_client *c, u8 reg, u16 val)
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{
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struct i2c_msg msg;
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u8 buf[3] = { 0 };
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int ret;
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buf[0] = reg;
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buf[1] = val >> 8;
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buf[2] = val & 0xff;
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msg.addr = c->addr;
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msg.flags = 0;
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msg.len = 3;
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msg.buf = (char *)buf;
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dev_dbg(&c->dev, "%s: %x = %x%x\n", __func__, reg, buf[1], buf[2]);
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ret = i2c_transfer(c->adapter, &msg, 1);
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if (ret < 0) {
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dev_err(&c->dev, "i2c write transfer error: %d\n", ret);
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return ret;
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}
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return 0;
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}
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static int __mt9v111_addr_space_select(struct i2c_client *c, u16 addr_space)
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{
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struct v4l2_subdev *sd = i2c_get_clientdata(c);
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struct mt9v111_dev *mt9v111 = sd_to_mt9v111(sd);
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u16 val;
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int ret;
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if (mt9v111->addr_space == addr_space)
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return 0;
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ret = __mt9v111_write(c, MT9V111_R01_ADDR_SPACE, addr_space);
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if (ret)
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return ret;
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/* Verify address space has been updated */
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ret = __mt9v111_read(c, MT9V111_R01_ADDR_SPACE, &val);
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if (ret)
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return ret;
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if (val != addr_space)
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return -EINVAL;
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mt9v111->addr_space = addr_space;
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return 0;
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}
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static int mt9v111_read(struct i2c_client *c, u8 addr_space, u8 reg, u16 *val)
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{
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int ret;
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/* Select register address space first. */
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ret = __mt9v111_addr_space_select(c, addr_space);
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if (ret)
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return ret;
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ret = __mt9v111_read(c, reg, val);
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if (ret)
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return ret;
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return 0;
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}
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static int mt9v111_write(struct i2c_client *c, u8 addr_space, u8 reg, u16 val)
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{
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int ret;
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/* Select register address space first. */
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ret = __mt9v111_addr_space_select(c, addr_space);
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if (ret)
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return ret;
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ret = __mt9v111_write(c, reg, val);
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if (ret)
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return ret;
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return 0;
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}
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static int mt9v111_update(struct i2c_client *c, u8 addr_space, u8 reg,
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u16 mask, u16 val)
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{
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u16 current_val;
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int ret;
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/* Select register address space first. */
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ret = __mt9v111_addr_space_select(c, addr_space);
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if (ret)
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return ret;
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/* Read the current register value, then update it. */
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ret = __mt9v111_read(c, reg, ¤t_val);
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if (ret)
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return ret;
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current_val &= ~mask;
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current_val |= (val & mask);
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ret = __mt9v111_write(c, reg, current_val);
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if (ret)
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return ret;
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return 0;
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}
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/* --- Sensor HW operations --- */
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static int __mt9v111_power_on(struct v4l2_subdev *sd)
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{
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struct mt9v111_dev *mt9v111 = sd_to_mt9v111(sd);
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int ret;
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ret = clk_prepare_enable(mt9v111->clk);
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if (ret)
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return ret;
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clk_set_rate(mt9v111->clk, mt9v111->sysclk);
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gpiod_set_value(mt9v111->standby, 0);
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usleep_range(500, 1000);
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gpiod_set_value(mt9v111->oe, 1);
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usleep_range(500, 1000);
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return 0;
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}
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static int __mt9v111_power_off(struct v4l2_subdev *sd)
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{
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struct mt9v111_dev *mt9v111 = sd_to_mt9v111(sd);
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gpiod_set_value(mt9v111->oe, 0);
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usleep_range(500, 1000);
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gpiod_set_value(mt9v111->standby, 1);
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usleep_range(500, 1000);
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clk_disable_unprepare(mt9v111->clk);
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return 0;
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}
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static int __mt9v111_hw_reset(struct mt9v111_dev *mt9v111)
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{
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if (!mt9v111->reset)
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return -EINVAL;
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gpiod_set_value(mt9v111->reset, 1);
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usleep_range(500, 1000);
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gpiod_set_value(mt9v111->reset, 0);
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usleep_range(500, 1000);
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return 0;
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}
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static int __mt9v111_sw_reset(struct mt9v111_dev *mt9v111)
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{
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struct i2c_client *c = mt9v111->client;
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int ret;
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/* Software reset core and IFP blocks. */
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ret = mt9v111_update(c, MT9V111_R01_CORE,
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MT9V111_CORE_R0D_CORE_RESET,
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MT9V111_CORE_R0D_CORE_RESET_MASK, 1);
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if (ret)
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return ret;
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usleep_range(500, 1000);
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ret = mt9v111_update(c, MT9V111_R01_CORE,
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MT9V111_CORE_R0D_CORE_RESET,
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MT9V111_CORE_R0D_CORE_RESET_MASK, 0);
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if (ret)
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return ret;
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usleep_range(500, 1000);
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ret = mt9v111_update(c, MT9V111_R01_IFP,
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MT9V111_IFP_R07_IFP_RESET,
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MT9V111_IFP_R07_IFP_RESET_MASK, 1);
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if (ret)
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return ret;
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usleep_range(500, 1000);
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ret = mt9v111_update(c, MT9V111_R01_IFP,
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MT9V111_IFP_R07_IFP_RESET,
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MT9V111_IFP_R07_IFP_RESET_MASK, 0);
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if (ret)
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return ret;
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usleep_range(500, 1000);
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return 0;
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}
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static int mt9v111_calc_frame_rate(struct mt9v111_dev *mt9v111,
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struct v4l2_fract *tpf)
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{
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unsigned int fps = tpf->numerator ?
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tpf->denominator / tpf->numerator :
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tpf->denominator;
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unsigned int best_diff;
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unsigned int frm_cols;
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unsigned int row_pclk;
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unsigned int best_fps;
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unsigned int pclk;
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unsigned int diff;
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unsigned int idx;
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unsigned int hb;
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unsigned int vb;
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unsigned int i;
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int ret;
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/* Approximate to the closest supported frame interval. */
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best_diff = ~0L;
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for (i = 0, idx = 0; i < ARRAY_SIZE(mt9v111_frame_intervals); i++) {
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diff = abs(fps - mt9v111_frame_intervals[i]);
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if (diff < best_diff) {
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idx = i;
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best_diff = diff;
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}
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}
|
|
fps = mt9v111_frame_intervals[idx];
|
|
|
|
/*
|
|
* The sensor does not provide a PLL circuitry and pixel clock is
|
|
* generated dividing the master clock source by two.
|
|
*
|
|
* Trow = (W + Hblank + 114) * 2 * (1 / SYSCLK)
|
|
* TFrame = Trow * (H + Vblank + 2)
|
|
*
|
|
* FPS = (SYSCLK / 2) / (Trow * (H + Vblank + 2))
|
|
*
|
|
* This boils down to tune H and V blanks to best approximate the
|
|
* above equation.
|
|
*
|
|
* Test all available H/V blank values, until we reach the
|
|
* desired frame rate.
|
|
*/
|
|
best_fps = vb = hb = 0;
|
|
pclk = DIV_ROUND_CLOSEST(mt9v111->sysclk, 2);
|
|
row_pclk = MT9V111_PIXEL_ARRAY_WIDTH + 7 + MT9V111_CORE_R04_WIN_H_OFFS;
|
|
frm_cols = MT9V111_PIXEL_ARRAY_HEIGHT + 7 + MT9V111_CORE_R03_WIN_V_OFFS;
|
|
|
|
best_diff = ~0L;
|
|
for (vb = MT9V111_CORE_R06_MIN_VBLANK;
|
|
vb < MT9V111_CORE_R06_MAX_VBLANK; vb++) {
|
|
for (hb = MT9V111_CORE_R05_MIN_HBLANK;
|
|
hb < MT9V111_CORE_R05_MAX_HBLANK; hb += 10) {
|
|
unsigned int t_frame = (row_pclk + hb) *
|
|
(frm_cols + vb);
|
|
unsigned int t_fps = DIV_ROUND_CLOSEST(pclk, t_frame);
|
|
|
|
diff = abs(fps - t_fps);
|
|
if (diff < best_diff) {
|
|
best_diff = diff;
|
|
best_fps = t_fps;
|
|
|
|
if (diff == 0)
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (diff == 0)
|
|
break;
|
|
}
|
|
|
|
ret = v4l2_ctrl_s_ctrl_int64(mt9v111->hblank, hb);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = v4l2_ctrl_s_ctrl_int64(mt9v111->vblank, vb);
|
|
if (ret)
|
|
return ret;
|
|
|
|
tpf->numerator = 1;
|
|
tpf->denominator = best_fps;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mt9v111_hw_config(struct mt9v111_dev *mt9v111)
|
|
{
|
|
struct i2c_client *c = mt9v111->client;
|
|
unsigned int ret;
|
|
u16 outfmtctrl2;
|
|
|
|
/* Force device reset. */
|
|
ret = __mt9v111_hw_reset(mt9v111);
|
|
if (ret == -EINVAL)
|
|
ret = __mt9v111_sw_reset(mt9v111);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Configure internal clock sample rate. */
|
|
ret = mt9v111->sysclk < DIV_ROUND_CLOSEST(MT9V111_MAX_CLKIN, 2) ?
|
|
mt9v111_update(c, MT9V111_R01_CORE,
|
|
MT9V111_CORE_R07_OUT_CTRL,
|
|
MT9V111_CORE_R07_OUT_CTRL_SAMPLE, 1) :
|
|
mt9v111_update(c, MT9V111_R01_CORE,
|
|
MT9V111_CORE_R07_OUT_CTRL,
|
|
MT9V111_CORE_R07_OUT_CTRL_SAMPLE, 0);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/*
|
|
* Configure output image format components ordering.
|
|
*
|
|
* TODO: IFP block can also output several RGB permutations, we only
|
|
* support YUYV permutations at the moment.
|
|
*/
|
|
switch (mt9v111->fmt.code) {
|
|
case MEDIA_BUS_FMT_YUYV8_2X8:
|
|
outfmtctrl2 = MT9V111_IFP_R3A_OUTFMT_CTRL2_SWAP_YC;
|
|
break;
|
|
case MEDIA_BUS_FMT_VYUY8_2X8:
|
|
outfmtctrl2 = MT9V111_IFP_R3A_OUTFMT_CTRL2_SWAP_CBCR;
|
|
break;
|
|
case MEDIA_BUS_FMT_YVYU8_2X8:
|
|
outfmtctrl2 = MT9V111_IFP_R3A_OUTFMT_CTRL2_SWAP_YC |
|
|
MT9V111_IFP_R3A_OUTFMT_CTRL2_SWAP_CBCR;
|
|
break;
|
|
case MEDIA_BUS_FMT_UYVY8_2X8:
|
|
default:
|
|
outfmtctrl2 = 0;
|
|
break;
|
|
}
|
|
|
|
ret = mt9v111_update(c, MT9V111_R01_IFP, MT9V111_IFP_R3A_OUTFMT_CTRL2,
|
|
MT9V111_IFP_R3A_OUTFMT_CTRL2_SWAP_MASK,
|
|
outfmtctrl2);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/*
|
|
* Do not change default sensor's core configuration:
|
|
* output the whole 640x480 pixel array, skip 18 columns and 6 rows.
|
|
*
|
|
* Instead, control the output image size through IFP block.
|
|
*
|
|
* TODO: No zoom&pan support. Currently we control the output image
|
|
* size only through decimation, with no zoom support.
|
|
*/
|
|
ret = mt9v111_write(c, MT9V111_R01_IFP, MT9V111_IFP_RA5_HPAN,
|
|
MT9V111_IFP_DECIMATION_FREEZE);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = mt9v111_write(c, MT9V111_R01_IFP, MT9V111_IFP_RA8_VPAN,
|
|
MT9V111_IFP_DECIMATION_FREEZE);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = mt9v111_write(c, MT9V111_R01_IFP, MT9V111_IFP_RA6_HZOOM,
|
|
MT9V111_IFP_DECIMATION_FREEZE |
|
|
MT9V111_PIXEL_ARRAY_WIDTH);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = mt9v111_write(c, MT9V111_R01_IFP, MT9V111_IFP_RA9_VZOOM,
|
|
MT9V111_IFP_DECIMATION_FREEZE |
|
|
MT9V111_PIXEL_ARRAY_HEIGHT);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = mt9v111_write(c, MT9V111_R01_IFP, MT9V111_IFP_RA7_HOUT,
|
|
MT9V111_IFP_DECIMATION_FREEZE |
|
|
mt9v111->fmt.width);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = mt9v111_write(c, MT9V111_R01_IFP, MT9V111_IFP_RAA_VOUT,
|
|
mt9v111->fmt.height);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Apply controls to set auto exp, auto awb and timings */
|
|
ret = v4l2_ctrl_handler_setup(&mt9v111->ctrls);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/*
|
|
* Set pixel integration time to the whole frame time.
|
|
* This value controls the the shutter delay when running with AE
|
|
* disabled. If longer than frame time, it affects the output
|
|
* frame rate.
|
|
*/
|
|
return mt9v111_write(c, MT9V111_R01_CORE, MT9V111_CORE_R09_PIXEL_INT,
|
|
MT9V111_PIXEL_ARRAY_HEIGHT);
|
|
}
|
|
|
|
/* --- V4L2 subdev operations --- */
|
|
|
|
static int mt9v111_s_power(struct v4l2_subdev *sd, int on)
|
|
{
|
|
struct mt9v111_dev *mt9v111 = sd_to_mt9v111(sd);
|
|
int pwr_count;
|
|
int ret = 0;
|
|
|
|
mutex_lock(&mt9v111->pwr_mutex);
|
|
|
|
/*
|
|
* Make sure we're transitioning from 0 to 1, or viceversa,
|
|
* before actually changing the power state.
|
|
*/
|
|
pwr_count = mt9v111->pwr_count;
|
|
pwr_count += on ? 1 : -1;
|
|
if (pwr_count == !!on) {
|
|
ret = on ? __mt9v111_power_on(sd) :
|
|
__mt9v111_power_off(sd);
|
|
if (!ret)
|
|
/* All went well, updated power counter. */
|
|
mt9v111->pwr_count = pwr_count;
|
|
|
|
mutex_unlock(&mt9v111->pwr_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Update power counter to keep track of how many nested calls we
|
|
* received.
|
|
*/
|
|
WARN_ON(pwr_count < 0 || pwr_count > 1);
|
|
mt9v111->pwr_count = pwr_count;
|
|
|
|
mutex_unlock(&mt9v111->pwr_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mt9v111_s_stream(struct v4l2_subdev *subdev, int enable)
|
|
{
|
|
struct mt9v111_dev *mt9v111 = sd_to_mt9v111(subdev);
|
|
int ret;
|
|
|
|
mutex_lock(&mt9v111->stream_mutex);
|
|
|
|
if (mt9v111->streaming == enable) {
|
|
mutex_unlock(&mt9v111->stream_mutex);
|
|
return 0;
|
|
}
|
|
|
|
ret = mt9v111_s_power(subdev, enable);
|
|
if (ret)
|
|
goto error_unlock;
|
|
|
|
if (enable && mt9v111->pending) {
|
|
ret = mt9v111_hw_config(mt9v111);
|
|
if (ret)
|
|
goto error_unlock;
|
|
|
|
/*
|
|
* No need to update control here as far as only H/VBLANK are
|
|
* supported and immediately programmed to registers in .s_ctrl
|
|
*/
|
|
|
|
mt9v111->pending = false;
|
|
}
|
|
|
|
mt9v111->streaming = enable ? true : false;
|
|
mutex_unlock(&mt9v111->stream_mutex);
|
|
|
|
return 0;
|
|
|
|
error_unlock:
|
|
mutex_unlock(&mt9v111->stream_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mt9v111_s_frame_interval(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_frame_interval *ival)
|
|
{
|
|
struct mt9v111_dev *mt9v111 = sd_to_mt9v111(sd);
|
|
struct v4l2_fract *tpf = &ival->interval;
|
|
unsigned int fps = tpf->numerator ?
|
|
tpf->denominator / tpf->numerator :
|
|
tpf->denominator;
|
|
unsigned int max_fps;
|
|
|
|
if (!tpf->numerator)
|
|
tpf->numerator = 1;
|
|
|
|
mutex_lock(&mt9v111->stream_mutex);
|
|
|
|
if (mt9v111->streaming) {
|
|
mutex_unlock(&mt9v111->stream_mutex);
|
|
return -EBUSY;
|
|
}
|
|
|
|
if (mt9v111->fps == fps) {
|
|
mutex_unlock(&mt9v111->stream_mutex);
|
|
return 0;
|
|
}
|
|
|
|
/* Make sure frame rate/image sizes constraints are respected. */
|
|
if (mt9v111->fmt.width < QVGA_WIDTH &&
|
|
mt9v111->fmt.height < QVGA_HEIGHT)
|
|
max_fps = 90;
|
|
else if (mt9v111->fmt.width < CIF_WIDTH &&
|
|
mt9v111->fmt.height < CIF_HEIGHT)
|
|
max_fps = 60;
|
|
else
|
|
max_fps = mt9v111->sysclk <
|
|
DIV_ROUND_CLOSEST(MT9V111_MAX_CLKIN, 2) ? 15 :
|
|
30;
|
|
|
|
if (fps > max_fps) {
|
|
mutex_unlock(&mt9v111->stream_mutex);
|
|
return -EINVAL;
|
|
}
|
|
|
|
mt9v111_calc_frame_rate(mt9v111, tpf);
|
|
|
|
mt9v111->fps = fps;
|
|
mt9v111->pending = true;
|
|
|
|
mutex_unlock(&mt9v111->stream_mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mt9v111_g_frame_interval(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_frame_interval *ival)
|
|
{
|
|
struct mt9v111_dev *mt9v111 = sd_to_mt9v111(sd);
|
|
struct v4l2_fract *tpf = &ival->interval;
|
|
|
|
mutex_lock(&mt9v111->stream_mutex);
|
|
|
|
tpf->numerator = 1;
|
|
tpf->denominator = mt9v111->fps;
|
|
|
|
mutex_unlock(&mt9v111->stream_mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct v4l2_mbus_framefmt *__mt9v111_get_pad_format(
|
|
struct mt9v111_dev *mt9v111,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
unsigned int pad,
|
|
enum v4l2_subdev_format_whence which)
|
|
{
|
|
switch (which) {
|
|
case V4L2_SUBDEV_FORMAT_TRY:
|
|
#if IS_ENABLED(CONFIG_VIDEO_V4L2_SUBDEV_API)
|
|
return v4l2_subdev_get_try_format(&mt9v111->sd, cfg, pad);
|
|
#else
|
|
return &cfg->try_fmt;
|
|
#endif
|
|
case V4L2_SUBDEV_FORMAT_ACTIVE:
|
|
return &mt9v111->fmt;
|
|
default:
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static int mt9v111_enum_mbus_code(struct v4l2_subdev *subdev,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_mbus_code_enum *code)
|
|
{
|
|
if (code->pad || code->index > ARRAY_SIZE(mt9v111_formats) - 1)
|
|
return -EINVAL;
|
|
|
|
code->code = mt9v111_formats[code->index].code;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mt9v111_enum_frame_interval(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_frame_interval_enum *fie)
|
|
{
|
|
unsigned int i;
|
|
|
|
if (fie->pad || fie->index >= ARRAY_SIZE(mt9v111_frame_intervals))
|
|
return -EINVAL;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(mt9v111_frame_sizes); i++)
|
|
if (fie->width == mt9v111_frame_sizes[i].width &&
|
|
fie->height == mt9v111_frame_sizes[i].height)
|
|
break;
|
|
|
|
if (i == ARRAY_SIZE(mt9v111_frame_sizes))
|
|
return -EINVAL;
|
|
|
|
fie->interval.numerator = 1;
|
|
fie->interval.denominator = mt9v111_frame_intervals[fie->index];
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mt9v111_enum_frame_size(struct v4l2_subdev *subdev,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_frame_size_enum *fse)
|
|
{
|
|
if (fse->pad || fse->index >= ARRAY_SIZE(mt9v111_frame_sizes))
|
|
return -EINVAL;
|
|
|
|
fse->min_width = mt9v111_frame_sizes[fse->index].width;
|
|
fse->max_width = mt9v111_frame_sizes[fse->index].width;
|
|
fse->min_height = mt9v111_frame_sizes[fse->index].height;
|
|
fse->max_height = mt9v111_frame_sizes[fse->index].height;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mt9v111_get_format(struct v4l2_subdev *subdev,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_format *format)
|
|
{
|
|
struct mt9v111_dev *mt9v111 = sd_to_mt9v111(subdev);
|
|
|
|
if (format->pad)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&mt9v111->stream_mutex);
|
|
format->format = *__mt9v111_get_pad_format(mt9v111, cfg, format->pad,
|
|
format->which);
|
|
mutex_unlock(&mt9v111->stream_mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mt9v111_set_format(struct v4l2_subdev *subdev,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_format *format)
|
|
{
|
|
struct mt9v111_dev *mt9v111 = sd_to_mt9v111(subdev);
|
|
struct v4l2_mbus_framefmt new_fmt;
|
|
struct v4l2_mbus_framefmt *__fmt;
|
|
unsigned int best_fit = ~0L;
|
|
unsigned int idx = 0;
|
|
unsigned int i;
|
|
|
|
mutex_lock(&mt9v111->stream_mutex);
|
|
if (mt9v111->streaming) {
|
|
mutex_unlock(&mt9v111->stream_mutex);
|
|
return -EBUSY;
|
|
}
|
|
|
|
if (format->pad) {
|
|
mutex_unlock(&mt9v111->stream_mutex);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Update mbus format code and sizes. */
|
|
for (i = 0; i < ARRAY_SIZE(mt9v111_formats); i++) {
|
|
if (format->format.code == mt9v111_formats[i].code) {
|
|
new_fmt.code = mt9v111_formats[i].code;
|
|
break;
|
|
}
|
|
}
|
|
if (i == ARRAY_SIZE(mt9v111_formats))
|
|
new_fmt.code = mt9v111_formats[0].code;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(mt9v111_frame_sizes); i++) {
|
|
unsigned int fit = abs(mt9v111_frame_sizes[i].width -
|
|
format->format.width) +
|
|
abs(mt9v111_frame_sizes[i].height -
|
|
format->format.height);
|
|
if (fit < best_fit) {
|
|
best_fit = fit;
|
|
idx = i;
|
|
|
|
if (fit == 0)
|
|
break;
|
|
}
|
|
}
|
|
new_fmt.width = mt9v111_frame_sizes[idx].width;
|
|
new_fmt.height = mt9v111_frame_sizes[idx].height;
|
|
|
|
/* Update the device (or pad) format if it has changed. */
|
|
__fmt = __mt9v111_get_pad_format(mt9v111, cfg, format->pad,
|
|
format->which);
|
|
|
|
/* Format hasn't changed, stop here. */
|
|
if (__fmt->code == new_fmt.code &&
|
|
__fmt->width == new_fmt.width &&
|
|
__fmt->height == new_fmt.height)
|
|
goto done;
|
|
|
|
/* Update the format and sizes, then mark changes as pending. */
|
|
__fmt->code = new_fmt.code;
|
|
__fmt->width = new_fmt.width;
|
|
__fmt->height = new_fmt.height;
|
|
|
|
if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
|
|
mt9v111->pending = true;
|
|
|
|
dev_dbg(mt9v111->dev, "%s: mbus_code: %x - (%ux%u)\n",
|
|
__func__, __fmt->code, __fmt->width, __fmt->height);
|
|
|
|
done:
|
|
format->format = *__fmt;
|
|
|
|
mutex_unlock(&mt9v111->stream_mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mt9v111_init_cfg(struct v4l2_subdev *subdev,
|
|
struct v4l2_subdev_pad_config *cfg)
|
|
{
|
|
cfg->try_fmt = mt9v111_def_fmt;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct v4l2_subdev_core_ops mt9v111_core_ops = {
|
|
.s_power = mt9v111_s_power,
|
|
};
|
|
|
|
static const struct v4l2_subdev_video_ops mt9v111_video_ops = {
|
|
.s_stream = mt9v111_s_stream,
|
|
.s_frame_interval = mt9v111_s_frame_interval,
|
|
.g_frame_interval = mt9v111_g_frame_interval,
|
|
};
|
|
|
|
static const struct v4l2_subdev_pad_ops mt9v111_pad_ops = {
|
|
.init_cfg = mt9v111_init_cfg,
|
|
.enum_mbus_code = mt9v111_enum_mbus_code,
|
|
.enum_frame_size = mt9v111_enum_frame_size,
|
|
.enum_frame_interval = mt9v111_enum_frame_interval,
|
|
.get_fmt = mt9v111_get_format,
|
|
.set_fmt = mt9v111_set_format,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops mt9v111_ops = {
|
|
.core = &mt9v111_core_ops,
|
|
.video = &mt9v111_video_ops,
|
|
.pad = &mt9v111_pad_ops,
|
|
};
|
|
|
|
#if IS_ENABLED(CONFIG_MEDIA_CONTROLLER)
|
|
static const struct media_entity_operations mt9v111_subdev_entity_ops = {
|
|
.link_validate = v4l2_subdev_link_validate,
|
|
};
|
|
#endif
|
|
|
|
/* --- V4L2 ctrl --- */
|
|
static int mt9v111_s_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct mt9v111_dev *mt9v111 = container_of(ctrl->handler,
|
|
struct mt9v111_dev,
|
|
ctrls);
|
|
int ret;
|
|
|
|
mutex_lock(&mt9v111->pwr_mutex);
|
|
/*
|
|
* If sensor is powered down, just cache new control values,
|
|
* no actual register access.
|
|
*/
|
|
if (!mt9v111->pwr_count) {
|
|
mt9v111->pending = true;
|
|
mutex_unlock(&mt9v111->pwr_mutex);
|
|
return 0;
|
|
}
|
|
mutex_unlock(&mt9v111->pwr_mutex);
|
|
|
|
/*
|
|
* Flickering control gets disabled if both auto exp and auto awb
|
|
* are disabled too. If any of the two is enabled, enable it.
|
|
*
|
|
* Disabling flickering when ae and awb are off allows a more precise
|
|
* control of the programmed frame rate.
|
|
*/
|
|
if (mt9v111->auto_exp->is_new || mt9v111->auto_awb->is_new) {
|
|
if (mt9v111->auto_exp->val == V4L2_EXPOSURE_MANUAL &&
|
|
mt9v111->auto_awb->val == V4L2_WHITE_BALANCE_MANUAL)
|
|
ret = mt9v111_update(mt9v111->client, MT9V111_R01_IFP,
|
|
MT9V111_IFP_R08_OUTFMT_CTRL,
|
|
MT9V111_IFP_R08_OUTFMT_CTRL_FLICKER,
|
|
0);
|
|
else
|
|
ret = mt9v111_update(mt9v111->client, MT9V111_R01_IFP,
|
|
MT9V111_IFP_R08_OUTFMT_CTRL,
|
|
MT9V111_IFP_R08_OUTFMT_CTRL_FLICKER,
|
|
1);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
ret = -EINVAL;
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_AUTO_WHITE_BALANCE:
|
|
ret = mt9v111_update(mt9v111->client, MT9V111_R01_IFP,
|
|
MT9V111_IFP_R06_OPMODE_CTRL,
|
|
MT9V111_IFP_R06_OPMODE_CTRL_AWB_EN,
|
|
ctrl->val == V4L2_WHITE_BALANCE_AUTO ?
|
|
MT9V111_IFP_R06_OPMODE_CTRL_AWB_EN : 0);
|
|
break;
|
|
case V4L2_CID_EXPOSURE_AUTO:
|
|
ret = mt9v111_update(mt9v111->client, MT9V111_R01_IFP,
|
|
MT9V111_IFP_R06_OPMODE_CTRL,
|
|
MT9V111_IFP_R06_OPMODE_CTRL_AE_EN,
|
|
ctrl->val == V4L2_EXPOSURE_AUTO ?
|
|
MT9V111_IFP_R06_OPMODE_CTRL_AE_EN : 0);
|
|
break;
|
|
case V4L2_CID_HBLANK:
|
|
ret = mt9v111_update(mt9v111->client, MT9V111_R01_CORE,
|
|
MT9V111_CORE_R05_HBLANK,
|
|
MT9V111_CORE_R05_MAX_HBLANK,
|
|
mt9v111->hblank->val);
|
|
break;
|
|
case V4L2_CID_VBLANK:
|
|
ret = mt9v111_update(mt9v111->client, MT9V111_R01_CORE,
|
|
MT9V111_CORE_R06_VBLANK,
|
|
MT9V111_CORE_R06_MAX_VBLANK,
|
|
mt9v111->vblank->val);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct v4l2_ctrl_ops mt9v111_ctrl_ops = {
|
|
.s_ctrl = mt9v111_s_ctrl,
|
|
};
|
|
|
|
static int mt9v111_chip_probe(struct mt9v111_dev *mt9v111)
|
|
{
|
|
int ret;
|
|
u16 val;
|
|
|
|
ret = __mt9v111_power_on(&mt9v111->sd);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = mt9v111_read(mt9v111->client, MT9V111_R01_CORE,
|
|
MT9V111_CORE_RFF_CHIP_VER, &val);
|
|
if (ret)
|
|
goto power_off;
|
|
|
|
if ((val >> 8) != MT9V111_CHIP_ID_HIGH &&
|
|
(val & 0xff) != MT9V111_CHIP_ID_LOW) {
|
|
dev_err(mt9v111->dev,
|
|
"Unable to identify MT9V111 chip: 0x%2x%2x\n",
|
|
val >> 8, val & 0xff);
|
|
ret = -EIO;
|
|
goto power_off;
|
|
}
|
|
|
|
dev_dbg(mt9v111->dev, "Chip identified: 0x%2x%2x\n",
|
|
val >> 8, val & 0xff);
|
|
|
|
power_off:
|
|
__mt9v111_power_off(&mt9v111->sd);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mt9v111_probe(struct i2c_client *client)
|
|
{
|
|
struct mt9v111_dev *mt9v111;
|
|
struct v4l2_fract tpf;
|
|
int ret;
|
|
|
|
mt9v111 = devm_kzalloc(&client->dev, sizeof(*mt9v111), GFP_KERNEL);
|
|
if (!mt9v111)
|
|
return -ENOMEM;
|
|
|
|
mt9v111->dev = &client->dev;
|
|
mt9v111->client = client;
|
|
|
|
mt9v111->clk = devm_clk_get(&client->dev, NULL);
|
|
if (IS_ERR(mt9v111->clk))
|
|
return PTR_ERR(mt9v111->clk);
|
|
|
|
mt9v111->sysclk = clk_get_rate(mt9v111->clk);
|
|
if (mt9v111->sysclk > MT9V111_MAX_CLKIN)
|
|
return -EINVAL;
|
|
|
|
mt9v111->oe = devm_gpiod_get_optional(&client->dev, "enable",
|
|
GPIOD_OUT_LOW);
|
|
if (IS_ERR(mt9v111->oe)) {
|
|
dev_err(&client->dev, "Unable to get GPIO \"enable\": %ld\n",
|
|
PTR_ERR(mt9v111->oe));
|
|
return PTR_ERR(mt9v111->oe);
|
|
}
|
|
|
|
mt9v111->standby = devm_gpiod_get_optional(&client->dev, "standby",
|
|
GPIOD_OUT_HIGH);
|
|
if (IS_ERR(mt9v111->standby)) {
|
|
dev_err(&client->dev, "Unable to get GPIO \"standby\": %ld\n",
|
|
PTR_ERR(mt9v111->standby));
|
|
return PTR_ERR(mt9v111->standby);
|
|
}
|
|
|
|
mt9v111->reset = devm_gpiod_get_optional(&client->dev, "reset",
|
|
GPIOD_OUT_LOW);
|
|
if (IS_ERR(mt9v111->reset)) {
|
|
dev_err(&client->dev, "Unable to get GPIO \"reset\": %ld\n",
|
|
PTR_ERR(mt9v111->reset));
|
|
return PTR_ERR(mt9v111->reset);
|
|
}
|
|
|
|
mutex_init(&mt9v111->pwr_mutex);
|
|
mutex_init(&mt9v111->stream_mutex);
|
|
|
|
v4l2_ctrl_handler_init(&mt9v111->ctrls, 5);
|
|
|
|
mt9v111->auto_awb = v4l2_ctrl_new_std(&mt9v111->ctrls,
|
|
&mt9v111_ctrl_ops,
|
|
V4L2_CID_AUTO_WHITE_BALANCE,
|
|
0, 1, 1,
|
|
V4L2_WHITE_BALANCE_AUTO);
|
|
mt9v111->auto_exp = v4l2_ctrl_new_std_menu(&mt9v111->ctrls,
|
|
&mt9v111_ctrl_ops,
|
|
V4L2_CID_EXPOSURE_AUTO,
|
|
V4L2_EXPOSURE_MANUAL,
|
|
0, V4L2_EXPOSURE_AUTO);
|
|
mt9v111->hblank = v4l2_ctrl_new_std(&mt9v111->ctrls, &mt9v111_ctrl_ops,
|
|
V4L2_CID_HBLANK,
|
|
MT9V111_CORE_R05_MIN_HBLANK,
|
|
MT9V111_CORE_R05_MAX_HBLANK, 1,
|
|
MT9V111_CORE_R05_DEF_HBLANK);
|
|
mt9v111->vblank = v4l2_ctrl_new_std(&mt9v111->ctrls, &mt9v111_ctrl_ops,
|
|
V4L2_CID_VBLANK,
|
|
MT9V111_CORE_R06_MIN_VBLANK,
|
|
MT9V111_CORE_R06_MAX_VBLANK, 1,
|
|
MT9V111_CORE_R06_DEF_VBLANK);
|
|
|
|
/* PIXEL_RATE is fixed: just expose it to user space. */
|
|
v4l2_ctrl_new_std(&mt9v111->ctrls, &mt9v111_ctrl_ops,
|
|
V4L2_CID_PIXEL_RATE, 0,
|
|
DIV_ROUND_CLOSEST(mt9v111->sysclk, 2), 1,
|
|
DIV_ROUND_CLOSEST(mt9v111->sysclk, 2));
|
|
|
|
if (mt9v111->ctrls.error) {
|
|
ret = mt9v111->ctrls.error;
|
|
goto error_free_ctrls;
|
|
}
|
|
mt9v111->sd.ctrl_handler = &mt9v111->ctrls;
|
|
|
|
/* Start with default configuration: 640x480 UYVY. */
|
|
mt9v111->fmt = mt9v111_def_fmt;
|
|
|
|
/* Re-calculate blankings for 640x480@15fps. */
|
|
mt9v111->fps = 15;
|
|
tpf.numerator = 1;
|
|
tpf.denominator = mt9v111->fps;
|
|
mt9v111_calc_frame_rate(mt9v111, &tpf);
|
|
|
|
mt9v111->pwr_count = 0;
|
|
mt9v111->addr_space = MT9V111_R01_IFP;
|
|
mt9v111->pending = true;
|
|
|
|
v4l2_i2c_subdev_init(&mt9v111->sd, client, &mt9v111_ops);
|
|
|
|
#if IS_ENABLED(CONFIG_MEDIA_CONTROLLER)
|
|
mt9v111->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
|
|
mt9v111->sd.entity.ops = &mt9v111_subdev_entity_ops;
|
|
mt9v111->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
|
|
|
|
mt9v111->pad.flags = MEDIA_PAD_FL_SOURCE;
|
|
ret = media_entity_pads_init(&mt9v111->sd.entity, 1, &mt9v111->pad);
|
|
if (ret)
|
|
goto error_free_entity;
|
|
#endif
|
|
|
|
ret = mt9v111_chip_probe(mt9v111);
|
|
if (ret)
|
|
goto error_free_entity;
|
|
|
|
ret = v4l2_async_register_subdev(&mt9v111->sd);
|
|
if (ret)
|
|
goto error_free_entity;
|
|
|
|
return 0;
|
|
|
|
error_free_entity:
|
|
#if IS_ENABLED(CONFIG_MEDIA_CONTROLLER)
|
|
media_entity_cleanup(&mt9v111->sd.entity);
|
|
#endif
|
|
|
|
error_free_ctrls:
|
|
v4l2_ctrl_handler_free(&mt9v111->ctrls);
|
|
|
|
mutex_destroy(&mt9v111->pwr_mutex);
|
|
mutex_destroy(&mt9v111->stream_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mt9v111_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
struct mt9v111_dev *mt9v111 = sd_to_mt9v111(sd);
|
|
|
|
v4l2_async_unregister_subdev(sd);
|
|
|
|
#if IS_ENABLED(CONFIG_MEDIA_CONTROLLER)
|
|
media_entity_cleanup(&sd->entity);
|
|
#endif
|
|
|
|
v4l2_ctrl_handler_free(&mt9v111->ctrls);
|
|
|
|
mutex_destroy(&mt9v111->pwr_mutex);
|
|
mutex_destroy(&mt9v111->stream_mutex);
|
|
|
|
devm_gpiod_put(mt9v111->dev, mt9v111->oe);
|
|
devm_gpiod_put(mt9v111->dev, mt9v111->standby);
|
|
devm_gpiod_put(mt9v111->dev, mt9v111->reset);
|
|
|
|
devm_clk_put(mt9v111->dev, mt9v111->clk);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id mt9v111_of_match[] = {
|
|
{ .compatible = "aptina,mt9v111", },
|
|
{ /* sentinel */ },
|
|
};
|
|
|
|
static struct i2c_driver mt9v111_driver = {
|
|
.driver = {
|
|
.name = "mt9v111",
|
|
.of_match_table = mt9v111_of_match,
|
|
},
|
|
.probe_new = mt9v111_probe,
|
|
.remove = mt9v111_remove,
|
|
};
|
|
|
|
module_i2c_driver(mt9v111_driver);
|
|
|
|
MODULE_DESCRIPTION("V4L2 sensor driver for Aptina MT9V111");
|
|
MODULE_AUTHOR("Jacopo Mondi <jacopo@jmondi.org>");
|
|
MODULE_LICENSE("GPL v2");
|