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0001 // SPDX-License-Identifier: GPL-2.0+
0002 /*
0003  * IMI RDACM20 GMSL Camera Driver
0004  *
0005  * Copyright (C) 2017-2020 Jacopo Mondi
0006  * Copyright (C) 2017-2020 Kieran Bingham
0007  * Copyright (C) 2017-2019 Laurent Pinchart
0008  * Copyright (C) 2017-2019 Niklas Söderlund
0009  * Copyright (C) 2016 Renesas Electronics Corporation
0010  * Copyright (C) 2015 Cogent Embedded, Inc.
0011  */
0012 
0013 /*
0014  * The camera is made of an Omnivision OV10635 sensor connected to a Maxim
0015  * MAX9271 GMSL serializer.
0016  */
0017 
0018 #include <linux/delay.h>
0019 #include <linux/fwnode.h>
0020 #include <linux/init.h>
0021 #include <linux/i2c.h>
0022 #include <linux/module.h>
0023 #include <linux/slab.h>
0024 #include <linux/videodev2.h>
0025 
0026 #include <media/v4l2-async.h>
0027 #include <media/v4l2-ctrls.h>
0028 #include <media/v4l2-subdev.h>
0029 
0030 #include "max9271.h"
0031 
0032 #define OV10635_I2C_ADDRESS     0x30
0033 
0034 #define OV10635_SOFTWARE_RESET      0x0103
0035 #define OV10635_PID         0x300a
0036 #define OV10635_VER         0x300b
0037 #define OV10635_SC_CMMN_SCCB_ID     0x300c
0038 #define OV10635_SC_CMMN_SCCB_ID_SELECT  BIT(0)
0039 #define OV10635_VERSION         0xa635
0040 
0041 #define OV10635_WIDTH           1280
0042 #define OV10635_HEIGHT          800
0043 
0044 /* VTS = PCLK / FPS / HTS / 2 (= 88MHz / 1572 / 30 / 2) */
0045 #define OV10635_HTS         1572
0046 /* FPS = 29,9998 */
0047 #define OV10635_VTS         933
0048 
0049 /*
0050  * As the drivers supports a single MEDIA_BUS_FMT_UYVY8_1X16 format we
0051  * can harcode the pixel rate.
0052  *
0053  * PCLK is fed through the system clock, programmed @88MHz.
0054  * MEDIA_BUS_FMT_UYVY8_1X16 format = 2 samples per pixel.
0055  *
0056  * Pixelrate = PCLK / 2
0057  * FPS = (OV10635_VTS * OV10635_HTS) / PixelRate
0058  *     = 29,9998
0059  */
0060 #define OV10635_PIXEL_RATE      (44000000)
0061 
0062 static const struct ov10635_reg {
0063     u16 reg;
0064     u8  val;
0065 } ov10635_regs_wizard[] = {
0066     { 0x301b, 0xff }, { 0x301c, 0xff }, { 0x301a, 0xff }, { 0x3011, 0x42 },
0067     { 0x6900, 0x0c }, { 0x6901, 0x19 }, { 0x3503, 0x10 }, { 0x3025, 0x03 },
0068     { 0x3003, 0x16 }, { 0x3004, 0x30 }, { 0x3005, 0x40 }, { 0x3006, 0x91 },
0069     { 0x3600, 0x74 }, { 0x3601, 0x2b }, { 0x3612, 0x00 }, { 0x3611, 0x67 },
0070     { 0x3633, 0xca }, { 0x3602, 0xaf }, { 0x3603, 0x04 }, { 0x3630, 0x28 },
0071     { 0x3631, 0x16 }, { 0x3714, 0x10 }, { 0x371d, 0x01 }, { 0x4300, 0x3a },
0072     { 0x3007, 0x01 }, { 0x3024, 0x03 }, { 0x3020, 0x0a }, { 0x3702, 0x0d },
0073     { 0x3703, 0x20 }, { 0x3704, 0x15 }, { 0x3709, 0xa8 }, { 0x370c, 0xc7 },
0074     { 0x370d, 0x80 }, { 0x3712, 0x00 }, { 0x3713, 0x20 }, { 0x3715, 0x04 },
0075     { 0x381d, 0x40 }, { 0x381c, 0x00 }, { 0x3822, 0x50 }, { 0x3824, 0x10 },
0076     { 0x3815, 0x8c }, { 0x3804, 0x05 }, { 0x3805, 0x1f }, { 0x3800, 0x00 },
0077     { 0x3801, 0x00 }, { 0x3806, 0x03 }, { 0x3807, 0x28 }, { 0x3802, 0x00 },
0078     { 0x3803, 0x07 }, { 0x3808, 0x05 }, { 0x3809, 0x00 }, { 0x380a, 0x03 },
0079     { 0x380b, 0x20 }, { 0x380c, OV10635_HTS >> 8 },
0080     { 0x380d, OV10635_HTS & 0xff }, { 0x380e, OV10635_VTS >> 8 },
0081     { 0x380f, OV10635_VTS & 0xff }, { 0x3813, 0x02 }, { 0x3811, 0x08 },
0082     { 0x381f, 0x0c }, { 0x3819, 0x04 }, { 0x3804, 0x01 }, { 0x3805, 0x00 },
0083     { 0x3828, 0x03 }, { 0x3829, 0x10 }, { 0x382a, 0x10 }, { 0x3621, 0x63 },
0084     { 0x5005, 0x08 }, { 0x56d5, 0x00 }, { 0x56d6, 0x80 }, { 0x56d7, 0x00 },
0085     { 0x56d8, 0x00 }, { 0x56d9, 0x00 }, { 0x56da, 0x80 }, { 0x56db, 0x00 },
0086     { 0x56dc, 0x00 }, { 0x56e8, 0x00 }, { 0x56e9, 0x7f }, { 0x56ea, 0x00 },
0087     { 0x56eb, 0x7f }, { 0x5100, 0x00 }, { 0x5101, 0x80 }, { 0x5102, 0x00 },
0088     { 0x5103, 0x80 }, { 0x5104, 0x00 }, { 0x5105, 0x80 }, { 0x5106, 0x00 },
0089     { 0x5107, 0x80 }, { 0x5108, 0x00 }, { 0x5109, 0x00 }, { 0x510a, 0x00 },
0090     { 0x510b, 0x00 }, { 0x510c, 0x00 }, { 0x510d, 0x00 }, { 0x510e, 0x00 },
0091     { 0x510f, 0x00 }, { 0x5110, 0x00 }, { 0x5111, 0x80 }, { 0x5112, 0x00 },
0092     { 0x5113, 0x80 }, { 0x5114, 0x00 }, { 0x5115, 0x80 }, { 0x5116, 0x00 },
0093     { 0x5117, 0x80 }, { 0x5118, 0x00 }, { 0x5119, 0x00 }, { 0x511a, 0x00 },
0094     { 0x511b, 0x00 }, { 0x511c, 0x00 }, { 0x511d, 0x00 }, { 0x511e, 0x00 },
0095     { 0x511f, 0x00 }, { 0x56d0, 0x00 }, { 0x5006, 0x04 }, { 0x5608, 0x05 },
0096     { 0x52d7, 0x06 }, { 0x528d, 0x08 }, { 0x5293, 0x12 }, { 0x52d3, 0x12 },
0097     { 0x5288, 0x06 }, { 0x5289, 0x20 }, { 0x52c8, 0x06 }, { 0x52c9, 0x20 },
0098     { 0x52cd, 0x04 }, { 0x5381, 0x00 }, { 0x5382, 0xff }, { 0x5589, 0x76 },
0099     { 0x558a, 0x47 }, { 0x558b, 0xef }, { 0x558c, 0xc9 }, { 0x558d, 0x49 },
0100     { 0x558e, 0x30 }, { 0x558f, 0x67 }, { 0x5590, 0x3f }, { 0x5591, 0xf0 },
0101     { 0x5592, 0x10 }, { 0x55a2, 0x6d }, { 0x55a3, 0x55 }, { 0x55a4, 0xc3 },
0102     { 0x55a5, 0xb5 }, { 0x55a6, 0x43 }, { 0x55a7, 0x38 }, { 0x55a8, 0x5f },
0103     { 0x55a9, 0x4b }, { 0x55aa, 0xf0 }, { 0x55ab, 0x10 }, { 0x5581, 0x52 },
0104     { 0x5300, 0x01 }, { 0x5301, 0x00 }, { 0x5302, 0x00 }, { 0x5303, 0x0e },
0105     { 0x5304, 0x00 }, { 0x5305, 0x0e }, { 0x5306, 0x00 }, { 0x5307, 0x36 },
0106     { 0x5308, 0x00 }, { 0x5309, 0xd9 }, { 0x530a, 0x00 }, { 0x530b, 0x0f },
0107     { 0x530c, 0x00 }, { 0x530d, 0x2c }, { 0x530e, 0x00 }, { 0x530f, 0x59 },
0108     { 0x5310, 0x00 }, { 0x5311, 0x7b }, { 0x5312, 0x00 }, { 0x5313, 0x22 },
0109     { 0x5314, 0x00 }, { 0x5315, 0xd5 }, { 0x5316, 0x00 }, { 0x5317, 0x13 },
0110     { 0x5318, 0x00 }, { 0x5319, 0x18 }, { 0x531a, 0x00 }, { 0x531b, 0x26 },
0111     { 0x531c, 0x00 }, { 0x531d, 0xdc }, { 0x531e, 0x00 }, { 0x531f, 0x02 },
0112     { 0x5320, 0x00 }, { 0x5321, 0x24 }, { 0x5322, 0x00 }, { 0x5323, 0x56 },
0113     { 0x5324, 0x00 }, { 0x5325, 0x85 }, { 0x5326, 0x00 }, { 0x5327, 0x20 },
0114     { 0x5609, 0x01 }, { 0x560a, 0x40 }, { 0x560b, 0x01 }, { 0x560c, 0x40 },
0115     { 0x560d, 0x00 }, { 0x560e, 0xfa }, { 0x560f, 0x00 }, { 0x5610, 0xfa },
0116     { 0x5611, 0x02 }, { 0x5612, 0x80 }, { 0x5613, 0x02 }, { 0x5614, 0x80 },
0117     { 0x5615, 0x01 }, { 0x5616, 0x2c }, { 0x5617, 0x01 }, { 0x5618, 0x2c },
0118     { 0x563b, 0x01 }, { 0x563c, 0x01 }, { 0x563d, 0x01 }, { 0x563e, 0x01 },
0119     { 0x563f, 0x03 }, { 0x5640, 0x03 }, { 0x5641, 0x03 }, { 0x5642, 0x05 },
0120     { 0x5643, 0x09 }, { 0x5644, 0x05 }, { 0x5645, 0x05 }, { 0x5646, 0x05 },
0121     { 0x5647, 0x05 }, { 0x5651, 0x00 }, { 0x5652, 0x80 }, { 0x521a, 0x01 },
0122     { 0x521b, 0x03 }, { 0x521c, 0x06 }, { 0x521d, 0x0a }, { 0x521e, 0x0e },
0123     { 0x521f, 0x12 }, { 0x5220, 0x16 }, { 0x5223, 0x02 }, { 0x5225, 0x04 },
0124     { 0x5227, 0x08 }, { 0x5229, 0x0c }, { 0x522b, 0x12 }, { 0x522d, 0x18 },
0125     { 0x522f, 0x1e }, { 0x5241, 0x04 }, { 0x5242, 0x01 }, { 0x5243, 0x03 },
0126     { 0x5244, 0x06 }, { 0x5245, 0x0a }, { 0x5246, 0x0e }, { 0x5247, 0x12 },
0127     { 0x5248, 0x16 }, { 0x524a, 0x03 }, { 0x524c, 0x04 }, { 0x524e, 0x08 },
0128     { 0x5250, 0x0c }, { 0x5252, 0x12 }, { 0x5254, 0x18 }, { 0x5256, 0x1e },
0129     /* fifo_line_length = 2*hts */
0130     { 0x4606, (2 * OV10635_HTS) >> 8 }, { 0x4607, (2 * OV10635_HTS) & 0xff },
0131     /* fifo_hsync_start = 2*(hts - xres) */
0132     { 0x460a, (2 * (OV10635_HTS - OV10635_WIDTH)) >> 8 },
0133     { 0x460b, (2 * (OV10635_HTS - OV10635_WIDTH)) & 0xff },
0134     { 0x460c, 0x00 }, { 0x4620, 0x0e },
0135     /* BT601: 0x08 is also acceptable as HS/VS mode */
0136     { 0x4700, 0x04 }, { 0x4701, 0x00 }, { 0x4702, 0x01 }, { 0x4004, 0x04 },
0137     { 0x4005, 0x18 }, { 0x4001, 0x06 }, { 0x4050, 0x22 }, { 0x4051, 0x24 },
0138     { 0x4052, 0x02 }, { 0x4057, 0x9c }, { 0x405a, 0x00 }, { 0x4202, 0x02 },
0139     { 0x3023, 0x10 }, { 0x0100, 0x01 }, { 0x0100, 0x01 }, { 0x6f10, 0x07 },
0140     { 0x6f11, 0x82 }, { 0x6f12, 0x04 }, { 0x6f13, 0x00 }, { 0xd000, 0x19 },
0141     { 0xd001, 0xa0 }, { 0xd002, 0x00 }, { 0xd003, 0x01 }, { 0xd004, 0xa9 },
0142     { 0xd005, 0xad }, { 0xd006, 0x10 }, { 0xd007, 0x40 }, { 0xd008, 0x44 },
0143     { 0xd009, 0x00 }, { 0xd00a, 0x68 }, { 0xd00b, 0x00 }, { 0xd00c, 0x15 },
0144     { 0xd00d, 0x00 }, { 0xd00e, 0x00 }, { 0xd00f, 0x00 }, { 0xd040, 0x9c },
0145     { 0xd041, 0x21 }, { 0xd042, 0xff }, { 0xd043, 0xf8 }, { 0xd044, 0xd4 },
0146     { 0xd045, 0x01 }, { 0xd046, 0x48 }, { 0xd047, 0x00 }, { 0xd048, 0xd4 },
0147     { 0xd049, 0x01 }, { 0xd04a, 0x50 }, { 0xd04b, 0x04 }, { 0xd04c, 0x18 },
0148     { 0xd04d, 0x60 }, { 0xd04e, 0x00 }, { 0xd04f, 0x01 }, { 0xd050, 0xa8 },
0149     { 0xd051, 0x63 }, { 0xd052, 0x02 }, { 0xd053, 0xa4 }, { 0xd054, 0x85 },
0150     { 0xd055, 0x43 }, { 0xd056, 0x00 }, { 0xd057, 0x00 }, { 0xd058, 0x18 },
0151     { 0xd059, 0x60 }, { 0xd05a, 0x00 }, { 0xd05b, 0x01 }, { 0xd05c, 0xa8 },
0152     { 0xd05d, 0x63 }, { 0xd05e, 0x03 }, { 0xd05f, 0xf0 }, { 0xd060, 0x98 },
0153     { 0xd061, 0xa3 }, { 0xd062, 0x00 }, { 0xd063, 0x00 }, { 0xd064, 0x8c },
0154     { 0xd065, 0x6a }, { 0xd066, 0x00 }, { 0xd067, 0x6e }, { 0xd068, 0xe5 },
0155     { 0xd069, 0x85 }, { 0xd06a, 0x18 }, { 0xd06b, 0x00 }, { 0xd06c, 0x10 },
0156     { 0xd06d, 0x00 }, { 0xd06e, 0x00 }, { 0xd06f, 0x10 }, { 0xd070, 0x9c },
0157     { 0xd071, 0x80 }, { 0xd072, 0x00 }, { 0xd073, 0x03 }, { 0xd074, 0x18 },
0158     { 0xd075, 0x60 }, { 0xd076, 0x00 }, { 0xd077, 0x01 }, { 0xd078, 0xa8 },
0159     { 0xd079, 0x63 }, { 0xd07a, 0x07 }, { 0xd07b, 0x80 }, { 0xd07c, 0x07 },
0160     { 0xd07d, 0xff }, { 0xd07e, 0xf9 }, { 0xd07f, 0x03 }, { 0xd080, 0x8c },
0161     { 0xd081, 0x63 }, { 0xd082, 0x00 }, { 0xd083, 0x00 }, { 0xd084, 0xa5 },
0162     { 0xd085, 0x6b }, { 0xd086, 0x00 }, { 0xd087, 0xff }, { 0xd088, 0x18 },
0163     { 0xd089, 0x80 }, { 0xd08a, 0x00 }, { 0xd08b, 0x01 }, { 0xd08c, 0xa8 },
0164     { 0xd08d, 0x84 }, { 0xd08e, 0x01 }, { 0xd08f, 0x04 }, { 0xd090, 0xe1 },
0165     { 0xd091, 0x6b }, { 0xd092, 0x58 }, { 0xd093, 0x00 }, { 0xd094, 0x94 },
0166     { 0xd095, 0x6a }, { 0xd096, 0x00 }, { 0xd097, 0x70 }, { 0xd098, 0xe1 },
0167     { 0xd099, 0x6b }, { 0xd09a, 0x20 }, { 0xd09b, 0x00 }, { 0xd09c, 0x95 },
0168     { 0xd09d, 0x6b }, { 0xd09e, 0x00 }, { 0xd09f, 0x00 }, { 0xd0a0, 0xe4 },
0169     { 0xd0a1, 0x8b }, { 0xd0a2, 0x18 }, { 0xd0a3, 0x00 }, { 0xd0a4, 0x0c },
0170     { 0xd0a5, 0x00 }, { 0xd0a6, 0x00 }, { 0xd0a7, 0x23 }, { 0xd0a8, 0x15 },
0171     { 0xd0a9, 0x00 }, { 0xd0aa, 0x00 }, { 0xd0ab, 0x00 }, { 0xd0ac, 0x18 },
0172     { 0xd0ad, 0x60 }, { 0xd0ae, 0x80 }, { 0xd0af, 0x06 }, { 0xd0b0, 0xa8 },
0173     { 0xd0b1, 0x83 }, { 0xd0b2, 0x40 }, { 0xd0b3, 0x08 }, { 0xd0b4, 0xa8 },
0174     { 0xd0b5, 0xe3 }, { 0xd0b6, 0x38 }, { 0xd0b7, 0x2a }, { 0xd0b8, 0xa8 },
0175     { 0xd0b9, 0xc3 }, { 0xd0ba, 0x40 }, { 0xd0bb, 0x09 }, { 0xd0bc, 0xa8 },
0176     { 0xd0bd, 0xa3 }, { 0xd0be, 0x38 }, { 0xd0bf, 0x29 }, { 0xd0c0, 0x8c },
0177     { 0xd0c1, 0x65 }, { 0xd0c2, 0x00 }, { 0xd0c3, 0x00 }, { 0xd0c4, 0xd8 },
0178     { 0xd0c5, 0x04 }, { 0xd0c6, 0x18 }, { 0xd0c7, 0x00 }, { 0xd0c8, 0x8c },
0179     { 0xd0c9, 0x67 }, { 0xd0ca, 0x00 }, { 0xd0cb, 0x00 }, { 0xd0cc, 0xd8 },
0180     { 0xd0cd, 0x06 }, { 0xd0ce, 0x18 }, { 0xd0cf, 0x00 }, { 0xd0d0, 0x18 },
0181     { 0xd0d1, 0x60 }, { 0xd0d2, 0x80 }, { 0xd0d3, 0x06 }, { 0xd0d4, 0xa8 },
0182     { 0xd0d5, 0xe3 }, { 0xd0d6, 0x67 }, { 0xd0d7, 0x02 }, { 0xd0d8, 0xa9 },
0183     { 0xd0d9, 0x03 }, { 0xd0da, 0x67 }, { 0xd0db, 0x03 }, { 0xd0dc, 0xa8 },
0184     { 0xd0dd, 0xc3 }, { 0xd0de, 0x3d }, { 0xd0df, 0x05 }, { 0xd0e0, 0x8c },
0185     { 0xd0e1, 0x66 }, { 0xd0e2, 0x00 }, { 0xd0e3, 0x00 }, { 0xd0e4, 0xb8 },
0186     { 0xd0e5, 0x63 }, { 0xd0e6, 0x00 }, { 0xd0e7, 0x18 }, { 0xd0e8, 0xb8 },
0187     { 0xd0e9, 0x63 }, { 0xd0ea, 0x00 }, { 0xd0eb, 0x98 }, { 0xd0ec, 0xbc },
0188     { 0xd0ed, 0x03 }, { 0xd0ee, 0x00 }, { 0xd0ef, 0x00 }, { 0xd0f0, 0x10 },
0189     { 0xd0f1, 0x00 }, { 0xd0f2, 0x00 }, { 0xd0f3, 0x16 }, { 0xd0f4, 0xb8 },
0190     { 0xd0f5, 0x83 }, { 0xd0f6, 0x00 }, { 0xd0f7, 0x19 }, { 0xd0f8, 0x8c },
0191     { 0xd0f9, 0x67 }, { 0xd0fa, 0x00 }, { 0xd0fb, 0x00 }, { 0xd0fc, 0xb8 },
0192     { 0xd0fd, 0xa4 }, { 0xd0fe, 0x00 }, { 0xd0ff, 0x98 }, { 0xd100, 0xb8 },
0193     { 0xd101, 0x83 }, { 0xd102, 0x00 }, { 0xd103, 0x08 }, { 0xd104, 0x8c },
0194     { 0xd105, 0x68 }, { 0xd106, 0x00 }, { 0xd107, 0x00 }, { 0xd108, 0xe0 },
0195     { 0xd109, 0x63 }, { 0xd10a, 0x20 }, { 0xd10b, 0x04 }, { 0xd10c, 0xe0 },
0196     { 0xd10d, 0x65 }, { 0xd10e, 0x18 }, { 0xd10f, 0x00 }, { 0xd110, 0xa4 },
0197     { 0xd111, 0x83 }, { 0xd112, 0xff }, { 0xd113, 0xff }, { 0xd114, 0xb8 },
0198     { 0xd115, 0x64 }, { 0xd116, 0x00 }, { 0xd117, 0x48 }, { 0xd118, 0xd8 },
0199     { 0xd119, 0x07 }, { 0xd11a, 0x18 }, { 0xd11b, 0x00 }, { 0xd11c, 0xd8 },
0200     { 0xd11d, 0x08 }, { 0xd11e, 0x20 }, { 0xd11f, 0x00 }, { 0xd120, 0x9c },
0201     { 0xd121, 0x60 }, { 0xd122, 0x00 }, { 0xd123, 0x00 }, { 0xd124, 0xd8 },
0202     { 0xd125, 0x06 }, { 0xd126, 0x18 }, { 0xd127, 0x00 }, { 0xd128, 0x00 },
0203     { 0xd129, 0x00 }, { 0xd12a, 0x00 }, { 0xd12b, 0x08 }, { 0xd12c, 0x15 },
0204     { 0xd12d, 0x00 }, { 0xd12e, 0x00 }, { 0xd12f, 0x00 }, { 0xd130, 0x8c },
0205     { 0xd131, 0x6a }, { 0xd132, 0x00 }, { 0xd133, 0x76 }, { 0xd134, 0xbc },
0206     { 0xd135, 0x23 }, { 0xd136, 0x00 }, { 0xd137, 0x00 }, { 0xd138, 0x13 },
0207     { 0xd139, 0xff }, { 0xd13a, 0xff }, { 0xd13b, 0xe6 }, { 0xd13c, 0x18 },
0208     { 0xd13d, 0x60 }, { 0xd13e, 0x80 }, { 0xd13f, 0x06 }, { 0xd140, 0x03 },
0209     { 0xd141, 0xff }, { 0xd142, 0xff }, { 0xd143, 0xdd }, { 0xd144, 0xa8 },
0210     { 0xd145, 0x83 }, { 0xd146, 0x40 }, { 0xd147, 0x08 }, { 0xd148, 0x85 },
0211     { 0xd149, 0x21 }, { 0xd14a, 0x00 }, { 0xd14b, 0x00 }, { 0xd14c, 0x85 },
0212     { 0xd14d, 0x41 }, { 0xd14e, 0x00 }, { 0xd14f, 0x04 }, { 0xd150, 0x44 },
0213     { 0xd151, 0x00 }, { 0xd152, 0x48 }, { 0xd153, 0x00 }, { 0xd154, 0x9c },
0214     { 0xd155, 0x21 }, { 0xd156, 0x00 }, { 0xd157, 0x08 }, { 0x6f0e, 0x03 },
0215     { 0x6f0f, 0x00 }, { 0x460e, 0x08 }, { 0x460f, 0x01 }, { 0x4610, 0x00 },
0216     { 0x4611, 0x01 }, { 0x4612, 0x00 }, { 0x4613, 0x01 },
0217     /* 8 bits */
0218     { 0x4605, 0x08 },
0219     /* Swap data bits order [9:0] -> [0:9] */
0220     { 0x4709, 0x10 }, { 0x4608, 0x00 }, { 0x4609, 0x08 }, { 0x6804, 0x00 },
0221     { 0x6805, 0x06 }, { 0x6806, 0x00 }, { 0x5120, 0x00 }, { 0x3510, 0x00 },
0222     { 0x3504, 0x00 }, { 0x6800, 0x00 }, { 0x6f0d, 0x01 },
0223     /* PCLK falling edge */
0224     { 0x4708, 0x01 }, { 0x5000, 0xff }, { 0x5001, 0xbf }, { 0x5002, 0x7e },
0225     { 0x503d, 0x00 }, { 0xc450, 0x01 }, { 0xc452, 0x04 }, { 0xc453, 0x00 },
0226     { 0xc454, 0x00 }, { 0xc455, 0x01 }, { 0xc456, 0x01 }, { 0xc457, 0x00 },
0227     { 0xc458, 0x00 }, { 0xc459, 0x00 }, { 0xc45b, 0x00 }, { 0xc45c, 0x01 },
0228     { 0xc45d, 0x00 }, { 0xc45e, 0x00 }, { 0xc45f, 0x00 }, { 0xc460, 0x00 },
0229     { 0xc461, 0x01 }, { 0xc462, 0x01 }, { 0xc464, 0x03 }, { 0xc465, 0x00 },
0230     { 0xc466, 0x8a }, { 0xc467, 0x00 }, { 0xc468, 0x86 }, { 0xc469, 0x00 },
0231     { 0xc46a, 0x40 }, { 0xc46b, 0x50 }, { 0xc46c, 0x30 }, { 0xc46d, 0x28 },
0232     { 0xc46e, 0x60 }, { 0xc46f, 0x40 }, { 0xc47c, 0x01 }, { 0xc47d, 0x38 },
0233     { 0xc47e, 0x00 }, { 0xc47f, 0x00 }, { 0xc480, 0x00 }, { 0xc481, 0xff },
0234     { 0xc482, 0x00 }, { 0xc483, 0x40 }, { 0xc484, 0x00 }, { 0xc485, 0x18 },
0235     { 0xc486, 0x00 }, { 0xc487, 0x18 },
0236     { 0xc488, (OV10635_VTS - 8) * 16 >> 8},
0237     { 0xc489, (OV10635_VTS - 8) * 16 & 0xff},
0238     { 0xc48a, (OV10635_VTS - 8) * 16 >> 8},
0239     { 0xc48b, (OV10635_VTS - 8) * 16 & 0xff}, { 0xc48c, 0x00 },
0240     { 0xc48d, 0x04 }, { 0xc48e, 0x00 }, { 0xc48f, 0x04 }, { 0xc490, 0x03 },
0241     { 0xc492, 0x20 }, { 0xc493, 0x08 }, { 0xc498, 0x02 }, { 0xc499, 0x00 },
0242     { 0xc49a, 0x02 }, { 0xc49b, 0x00 }, { 0xc49c, 0x02 }, { 0xc49d, 0x00 },
0243     { 0xc49e, 0x02 }, { 0xc49f, 0x60 }, { 0xc4a0, 0x03 }, { 0xc4a1, 0x00 },
0244     { 0xc4a2, 0x04 }, { 0xc4a3, 0x00 }, { 0xc4a4, 0x00 }, { 0xc4a5, 0x10 },
0245     { 0xc4a6, 0x00 }, { 0xc4a7, 0x40 }, { 0xc4a8, 0x00 }, { 0xc4a9, 0x80 },
0246     { 0xc4aa, 0x0d }, { 0xc4ab, 0x00 }, { 0xc4ac, 0x0f }, { 0xc4ad, 0xc0 },
0247     { 0xc4b4, 0x01 }, { 0xc4b5, 0x01 }, { 0xc4b6, 0x00 }, { 0xc4b7, 0x01 },
0248     { 0xc4b8, 0x00 }, { 0xc4b9, 0x01 }, { 0xc4ba, 0x01 }, { 0xc4bb, 0x00 },
0249     { 0xc4bc, 0x01 }, { 0xc4bd, 0x60 }, { 0xc4be, 0x02 }, { 0xc4bf, 0x33 },
0250     { 0xc4c8, 0x03 }, { 0xc4c9, 0xd0 }, { 0xc4ca, 0x0e }, { 0xc4cb, 0x00 },
0251     { 0xc4cc, 0x0e }, { 0xc4cd, 0x51 }, { 0xc4ce, 0x0e }, { 0xc4cf, 0x51 },
0252     { 0xc4d0, 0x04 }, { 0xc4d1, 0x80 }, { 0xc4e0, 0x04 }, { 0xc4e1, 0x02 },
0253     { 0xc4e2, 0x01 }, { 0xc4e4, 0x10 }, { 0xc4e5, 0x20 }, { 0xc4e6, 0x30 },
0254     { 0xc4e7, 0x40 }, { 0xc4e8, 0x50 }, { 0xc4e9, 0x60 }, { 0xc4ea, 0x70 },
0255     { 0xc4eb, 0x80 }, { 0xc4ec, 0x90 }, { 0xc4ed, 0xa0 }, { 0xc4ee, 0xb0 },
0256     { 0xc4ef, 0xc0 }, { 0xc4f0, 0xd0 }, { 0xc4f1, 0xe0 }, { 0xc4f2, 0xf0 },
0257     { 0xc4f3, 0x80 }, { 0xc4f4, 0x00 }, { 0xc4f5, 0x20 }, { 0xc4f6, 0x02 },
0258     { 0xc4f7, 0x00 }, { 0xc4f8, 0x00 }, { 0xc4f9, 0x00 }, { 0xc4fa, 0x00 },
0259     { 0xc4fb, 0x01 }, { 0xc4fc, 0x01 }, { 0xc4fd, 0x00 }, { 0xc4fe, 0x04 },
0260     { 0xc4ff, 0x02 }, { 0xc500, 0x48 }, { 0xc501, 0x74 }, { 0xc502, 0x58 },
0261     { 0xc503, 0x80 }, { 0xc504, 0x05 }, { 0xc505, 0x80 }, { 0xc506, 0x03 },
0262     { 0xc507, 0x80 }, { 0xc508, 0x01 }, { 0xc509, 0xc0 }, { 0xc50a, 0x01 },
0263     { 0xc50b, 0xa0 }, { 0xc50c, 0x01 }, { 0xc50d, 0x2c }, { 0xc50e, 0x01 },
0264     { 0xc50f, 0x0a }, { 0xc510, 0x00 }, { 0xc511, 0x00 }, { 0xc512, 0xe5 },
0265     { 0xc513, 0x14 }, { 0xc514, 0x04 }, { 0xc515, 0x00 }, { 0xc518, OV10635_VTS >> 8},
0266     { 0xc519, OV10635_VTS & 0xff}, { 0xc51a, OV10635_HTS >> 8},
0267     { 0xc51b, OV10635_HTS & 0xff}, { 0xc2e0, 0x00 }, { 0xc2e1, 0x51 },
0268     { 0xc2e2, 0x00 }, { 0xc2e3, 0xd6 }, { 0xc2e4, 0x01 }, { 0xc2e5, 0x5e },
0269     { 0xc2e9, 0x01 }, { 0xc2ea, 0x7a }, { 0xc2eb, 0x90 }, { 0xc2ed, 0x00 },
0270     { 0xc2ee, 0x7a }, { 0xc2ef, 0x64 }, { 0xc308, 0x00 }, { 0xc309, 0x00 },
0271     { 0xc30a, 0x00 }, { 0xc30c, 0x00 }, { 0xc30d, 0x01 }, { 0xc30e, 0x00 },
0272     { 0xc30f, 0x00 }, { 0xc310, 0x01 }, { 0xc311, 0x60 }, { 0xc312, 0xff },
0273     { 0xc313, 0x08 }, { 0xc314, 0x01 }, { 0xc315, 0x00 }, { 0xc316, 0xff },
0274     { 0xc317, 0x0b }, { 0xc318, 0x00 }, { 0xc319, 0x0c }, { 0xc31a, 0x00 },
0275     { 0xc31b, 0xe0 }, { 0xc31c, 0x00 }, { 0xc31d, 0x14 }, { 0xc31e, 0x00 },
0276     { 0xc31f, 0xc5 }, { 0xc320, 0xff }, { 0xc321, 0x4b }, { 0xc322, 0xff },
0277     { 0xc323, 0xf0 }, { 0xc324, 0xff }, { 0xc325, 0xe8 }, { 0xc326, 0x00 },
0278     { 0xc327, 0x46 }, { 0xc328, 0xff }, { 0xc329, 0xd2 }, { 0xc32a, 0xff },
0279     { 0xc32b, 0xe4 }, { 0xc32c, 0xff }, { 0xc32d, 0xbb }, { 0xc32e, 0x00 },
0280     { 0xc32f, 0x61 }, { 0xc330, 0xff }, { 0xc331, 0xf9 }, { 0xc332, 0x00 },
0281     { 0xc333, 0xd9 }, { 0xc334, 0x00 }, { 0xc335, 0x2e }, { 0xc336, 0x00 },
0282     { 0xc337, 0xb1 }, { 0xc338, 0xff }, { 0xc339, 0x64 }, { 0xc33a, 0xff },
0283     { 0xc33b, 0xeb }, { 0xc33c, 0xff }, { 0xc33d, 0xe8 }, { 0xc33e, 0x00 },
0284     { 0xc33f, 0x48 }, { 0xc340, 0xff }, { 0xc341, 0xd0 }, { 0xc342, 0xff },
0285     { 0xc343, 0xed }, { 0xc344, 0xff }, { 0xc345, 0xad }, { 0xc346, 0x00 },
0286     { 0xc347, 0x66 }, { 0xc348, 0x01 }, { 0xc349, 0x00 }, { 0x6700, 0x04 },
0287     { 0x6701, 0x7b }, { 0x6702, 0xfd }, { 0x6703, 0xf9 }, { 0x6704, 0x3d },
0288     { 0x6705, 0x71 }, { 0x6706, 0x78 }, { 0x6708, 0x05 }, { 0x6f06, 0x6f },
0289     { 0x6f07, 0x00 }, { 0x6f0a, 0x6f }, { 0x6f0b, 0x00 }, { 0x6f00, 0x03 },
0290     { 0xc34c, 0x01 }, { 0xc34d, 0x00 }, { 0xc34e, 0x46 }, { 0xc34f, 0x55 },
0291     { 0xc350, 0x00 }, { 0xc351, 0x40 }, { 0xc352, 0x00 }, { 0xc353, 0xff },
0292     { 0xc354, 0x04 }, { 0xc355, 0x08 }, { 0xc356, 0x01 }, { 0xc357, 0xef },
0293     { 0xc358, 0x30 }, { 0xc359, 0x01 }, { 0xc35a, 0x64 }, { 0xc35b, 0x46 },
0294     { 0xc35c, 0x00 }, { 0x3042, 0xf0 }, { 0x3042, 0xf0 }, { 0x3042, 0xf0 },
0295     { 0x3042, 0xf0 }, { 0x3042, 0xf0 }, { 0x3042, 0xf0 }, { 0x3042, 0xf0 },
0296     { 0x3042, 0xf0 }, { 0x3042, 0xf0 }, { 0x3042, 0xf0 }, { 0x3042, 0xf0 },
0297     { 0x3042, 0xf0 }, { 0x3042, 0xf0 }, { 0x3042, 0xf0 }, { 0x3042, 0xf0 },
0298     { 0x3042, 0xf0 }, { 0x3042, 0xf0 }, { 0x3042, 0xf0 }, { 0x3042, 0xf0 },
0299     { 0x3042, 0xf0 }, { 0x3042, 0xf0 }, { 0x3042, 0xf0 }, { 0x3042, 0xf0 },
0300     { 0x3042, 0xf0 }, { 0x3042, 0xf0 }, { 0x3042, 0xf0 }, { 0xc261, 0x01 },
0301     { 0x301b, 0xf0 }, { 0x301c, 0xf0 }, { 0x301a, 0xf0 }, { 0x6f00, 0xc3 },
0302     { 0xc46a, 0x30 }, { 0xc46d, 0x20 }, { 0xc464, 0x84 }, { 0xc465, 0x00 },
0303     { 0x6f00, 0x03 }, { 0x6f00, 0x43 }, { 0x381c, 0x00 }, { 0x381d, 0x40 },
0304     { 0xc454, 0x01 }, { 0x6f00, 0xc3 }, { 0xc454, 0x00 }, { 0xc4b1, 0x02 },
0305     { 0xc4b2, 0x01 }, { 0xc4b3, 0x03 }, { 0x6f00, 0x03 }, { 0x6f00, 0x43 },
0306     /* enable FSIN (FRAMESYNC input) functionality */
0307     { 0x3832, (0x0d + 2 * 0x20 + 0x15 + 38) >> 8 },
0308     { 0x3833, (0x0d + 2 * 0x20 + 0x15 + 38) & 0xff },
0309     { 0x3834, OV10635_VTS >> 8 }, { 0x3835, OV10635_VTS & 0xff },
0310     { 0x302e, 0x01 },
0311 };
0312 
0313 struct rdacm20_device {
0314     struct device           *dev;
0315     struct max9271_device       serializer;
0316     struct i2c_client       *sensor;
0317     struct v4l2_subdev      sd;
0318     struct media_pad        pad;
0319     struct v4l2_ctrl_handler    ctrls;
0320     u32             addrs[2];
0321 };
0322 
0323 static inline struct rdacm20_device *sd_to_rdacm20(struct v4l2_subdev *sd)
0324 {
0325     return container_of(sd, struct rdacm20_device, sd);
0326 }
0327 
0328 static inline struct rdacm20_device *i2c_to_rdacm20(struct i2c_client *client)
0329 {
0330     return sd_to_rdacm20(i2c_get_clientdata(client));
0331 }
0332 
0333 static int ov10635_read16(struct rdacm20_device *dev, u16 reg)
0334 {
0335     u8 buf[2] = { reg >> 8, reg & 0xff };
0336     int ret;
0337 
0338     ret = i2c_master_send(dev->sensor, buf, 2);
0339     if (ret != 2) {
0340         dev_dbg(dev->dev, "%s: register 0x%04x write failed (%d)\n",
0341             __func__, reg, ret);
0342         return ret;
0343     }
0344 
0345     ret = i2c_master_recv(dev->sensor, buf, 2);
0346     if (ret < 0) {
0347         dev_dbg(dev->dev, "%s: register 0x%04x read failed (%d)\n",
0348             __func__, reg, ret);
0349         return ret;
0350     }
0351 
0352     return (buf[0] << 8) | buf[1];
0353 }
0354 
0355 static int __ov10635_write(struct rdacm20_device *dev, u16 reg, u8 val)
0356 {
0357     u8 buf[3] = { reg >> 8, reg & 0xff, val };
0358     int ret;
0359 
0360     dev_dbg(dev->dev, "%s(0x%04x, 0x%02x)\n", __func__, reg, val);
0361 
0362     ret = i2c_master_send(dev->sensor, buf, 3);
0363     return ret < 0 ? ret : 0;
0364 }
0365 
0366 static int ov10635_write(struct rdacm20_device *dev, u16 reg, u8 val)
0367 {
0368     int ret;
0369 
0370     ret = __ov10635_write(dev, reg, val);
0371     if (ret < 0)
0372         dev_err(dev->dev, "%s: register 0x%04x write failed (%d)\n",
0373             __func__, reg, ret);
0374 
0375     return ret;
0376 }
0377 
0378 static int ov10635_set_regs(struct rdacm20_device *dev,
0379                 const struct ov10635_reg *regs,
0380                 unsigned int nr_regs)
0381 {
0382     unsigned int i;
0383     int ret;
0384 
0385     for (i = 0; i < nr_regs; i++) {
0386         ret = __ov10635_write(dev, regs[i].reg, regs[i].val);
0387         if (ret) {
0388             dev_err(dev->dev,
0389                 "%s: register %u (0x%04x) write failed (%d)\n",
0390                 __func__, i, regs[i].reg, ret);
0391             return ret;
0392         }
0393     }
0394 
0395     return 0;
0396 }
0397 
0398 static int rdacm20_s_stream(struct v4l2_subdev *sd, int enable)
0399 {
0400     struct rdacm20_device *dev = sd_to_rdacm20(sd);
0401 
0402     return max9271_set_serial_link(&dev->serializer, enable);
0403 }
0404 
0405 static int rdacm20_enum_mbus_code(struct v4l2_subdev *sd,
0406                   struct v4l2_subdev_state *sd_state,
0407                   struct v4l2_subdev_mbus_code_enum *code)
0408 {
0409     if (code->pad || code->index > 0)
0410         return -EINVAL;
0411 
0412     code->code = MEDIA_BUS_FMT_UYVY8_1X16;
0413 
0414     return 0;
0415 }
0416 
0417 static int rdacm20_get_fmt(struct v4l2_subdev *sd,
0418                struct v4l2_subdev_state *sd_state,
0419                struct v4l2_subdev_format *format)
0420 {
0421     struct v4l2_mbus_framefmt *mf = &format->format;
0422 
0423     if (format->pad)
0424         return -EINVAL;
0425 
0426     mf->width       = OV10635_WIDTH;
0427     mf->height      = OV10635_HEIGHT;
0428     mf->code        = MEDIA_BUS_FMT_UYVY8_1X16;
0429     mf->colorspace      = V4L2_COLORSPACE_RAW;
0430     mf->field       = V4L2_FIELD_NONE;
0431     mf->ycbcr_enc       = V4L2_YCBCR_ENC_601;
0432     mf->quantization    = V4L2_QUANTIZATION_FULL_RANGE;
0433     mf->xfer_func       = V4L2_XFER_FUNC_NONE;
0434 
0435     return 0;
0436 }
0437 
0438 static const struct v4l2_subdev_video_ops rdacm20_video_ops = {
0439     .s_stream   = rdacm20_s_stream,
0440 };
0441 
0442 static const struct v4l2_subdev_pad_ops rdacm20_subdev_pad_ops = {
0443     .enum_mbus_code = rdacm20_enum_mbus_code,
0444     .get_fmt    = rdacm20_get_fmt,
0445     .set_fmt    = rdacm20_get_fmt,
0446 };
0447 
0448 static const struct v4l2_subdev_ops rdacm20_subdev_ops = {
0449     .video      = &rdacm20_video_ops,
0450     .pad        = &rdacm20_subdev_pad_ops,
0451 };
0452 
0453 static int rdacm20_initialize(struct rdacm20_device *dev)
0454 {
0455     unsigned int retry = 3;
0456     int ret;
0457 
0458     max9271_wake_up(&dev->serializer);
0459 
0460     /* Serial link disabled during config as it needs a valid pixel clock. */
0461     ret = max9271_set_serial_link(&dev->serializer, false);
0462     if (ret)
0463         return ret;
0464 
0465     /*
0466      *  Ensure that we have a good link configuration before attempting to
0467      *  identify the device.
0468      */
0469     ret = max9271_configure_i2c(&dev->serializer,
0470                     MAX9271_I2CSLVSH_469NS_234NS |
0471                     MAX9271_I2CSLVTO_1024US |
0472                     MAX9271_I2CMSTBT_105KBPS);
0473     if (ret)
0474         return ret;
0475 
0476     /*
0477      * Hold OV10635 in reset during max9271 configuration. The reset signal
0478      * has to be asserted for at least 200 microseconds.
0479      */
0480     ret = max9271_enable_gpios(&dev->serializer, MAX9271_GPIO1OUT);
0481     if (ret)
0482         return ret;
0483 
0484     ret = max9271_clear_gpios(&dev->serializer, MAX9271_GPIO1OUT);
0485     if (ret)
0486         return ret;
0487     usleep_range(200, 500);
0488 
0489     ret = max9271_configure_gmsl_link(&dev->serializer);
0490     if (ret)
0491         return ret;
0492 
0493     ret = max9271_verify_id(&dev->serializer);
0494     if (ret < 0)
0495         return ret;
0496 
0497     ret = max9271_set_address(&dev->serializer, dev->addrs[0]);
0498     if (ret < 0)
0499         return ret;
0500     dev->serializer.client->addr = dev->addrs[0];
0501 
0502     /*
0503      * Release ov10635 from reset and initialize it. The image sensor
0504      * requires at least 2048 XVCLK cycles (85 micro-seconds at 24MHz)
0505      * before being available. Stay safe and wait up to 500 micro-seconds.
0506      */
0507     ret = max9271_set_gpios(&dev->serializer, MAX9271_GPIO1OUT);
0508     if (ret)
0509         return ret;
0510     usleep_range(100, 500);
0511 
0512 again:
0513     ret = ov10635_read16(dev, OV10635_PID);
0514     if (ret < 0) {
0515         if (retry--)
0516             goto again;
0517 
0518         dev_err(dev->dev, "OV10635 ID read failed (%d)\n",
0519             ret);
0520         return -ENXIO;
0521     }
0522 
0523     if (ret != OV10635_VERSION) {
0524         if (retry--)
0525             goto again;
0526 
0527         dev_err(dev->dev, "OV10635 ID mismatch (0x%04x)\n",
0528             ret);
0529         return -ENXIO;
0530     }
0531 
0532     /* Change the sensor I2C address. */
0533     ret = ov10635_write(dev, OV10635_SC_CMMN_SCCB_ID,
0534                 (dev->addrs[1] << 1) |
0535                 OV10635_SC_CMMN_SCCB_ID_SELECT);
0536     if (ret < 0) {
0537         dev_err(dev->dev,
0538             "OV10635 I2C address change failed (%d)\n", ret);
0539         return ret;
0540     }
0541     dev->sensor->addr = dev->addrs[1];
0542     usleep_range(3500, 5000);
0543 
0544     /* Program the 0V10635 initial configuration. */
0545     ret = ov10635_set_regs(dev, ov10635_regs_wizard,
0546                    ARRAY_SIZE(ov10635_regs_wizard));
0547     if (ret)
0548         return ret;
0549 
0550     dev_info(dev->dev, "Identified RDACM20 camera module\n");
0551 
0552     /*
0553      * Set reverse channel high threshold to increase noise immunity.
0554      *
0555      * This should be compensated by increasing the reverse channel
0556      * amplitude on the remote deserializer side.
0557      *
0558      * TODO Inspect the embedded MCU programming sequence to make sure
0559      * there are no conflicts with the configuration applied here.
0560      *
0561      * TODO Clarify the embedded MCU startup delay to avoid write
0562      * collisions on the I2C bus.
0563      */
0564     return max9271_set_high_threshold(&dev->serializer, true);
0565 }
0566 
0567 static int rdacm20_probe(struct i2c_client *client)
0568 {
0569     struct rdacm20_device *dev;
0570     struct fwnode_handle *ep;
0571     int ret;
0572 
0573     dev = devm_kzalloc(&client->dev, sizeof(*dev), GFP_KERNEL);
0574     if (!dev)
0575         return -ENOMEM;
0576     dev->dev = &client->dev;
0577     dev->serializer.client = client;
0578 
0579     ret = of_property_read_u32_array(client->dev.of_node, "reg",
0580                      dev->addrs, 2);
0581     if (ret < 0) {
0582         dev_err(dev->dev, "Invalid DT reg property: %d\n", ret);
0583         return -EINVAL;
0584     }
0585 
0586     /* Create the dummy I2C client for the sensor. */
0587     dev->sensor = i2c_new_dummy_device(client->adapter,
0588                        OV10635_I2C_ADDRESS);
0589     if (IS_ERR(dev->sensor)) {
0590         ret = PTR_ERR(dev->sensor);
0591         goto error;
0592     }
0593 
0594     /* Initialize the hardware. */
0595     ret = rdacm20_initialize(dev);
0596     if (ret < 0)
0597         goto error;
0598 
0599     /* Initialize and register the subdevice. */
0600     v4l2_i2c_subdev_init(&dev->sd, client, &rdacm20_subdev_ops);
0601     dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
0602 
0603     v4l2_ctrl_handler_init(&dev->ctrls, 1);
0604     v4l2_ctrl_new_std(&dev->ctrls, NULL, V4L2_CID_PIXEL_RATE,
0605               OV10635_PIXEL_RATE, OV10635_PIXEL_RATE, 1,
0606               OV10635_PIXEL_RATE);
0607     dev->sd.ctrl_handler = &dev->ctrls;
0608 
0609     ret = dev->ctrls.error;
0610     if (ret)
0611         goto error_free_ctrls;
0612 
0613     dev->pad.flags = MEDIA_PAD_FL_SOURCE;
0614     dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
0615     ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad);
0616     if (ret < 0)
0617         goto error_free_ctrls;
0618 
0619     ep = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev), NULL);
0620     if (!ep) {
0621         dev_err(&client->dev,
0622             "Unable to get endpoint in node %pOF\n",
0623             client->dev.of_node);
0624         ret = -ENOENT;
0625         goto error_free_ctrls;
0626     }
0627     dev->sd.fwnode = ep;
0628 
0629     ret = v4l2_async_register_subdev(&dev->sd);
0630     if (ret)
0631         goto error_put_node;
0632 
0633     return 0;
0634 
0635 error_put_node:
0636     fwnode_handle_put(ep);
0637 error_free_ctrls:
0638     v4l2_ctrl_handler_free(&dev->ctrls);
0639 error:
0640     media_entity_cleanup(&dev->sd.entity);
0641     if (dev->sensor)
0642         i2c_unregister_device(dev->sensor);
0643 
0644     dev_err(&client->dev, "probe failed\n");
0645 
0646     return ret;
0647 }
0648 
0649 static int rdacm20_remove(struct i2c_client *client)
0650 {
0651     struct rdacm20_device *dev = i2c_to_rdacm20(client);
0652 
0653     fwnode_handle_put(dev->sd.fwnode);
0654     v4l2_async_unregister_subdev(&dev->sd);
0655     v4l2_ctrl_handler_free(&dev->ctrls);
0656     media_entity_cleanup(&dev->sd.entity);
0657     i2c_unregister_device(dev->sensor);
0658 
0659     return 0;
0660 }
0661 
0662 static void rdacm20_shutdown(struct i2c_client *client)
0663 {
0664     struct rdacm20_device *dev = i2c_to_rdacm20(client);
0665 
0666     /* make sure stream off during shutdown (reset/reboot) */
0667     rdacm20_s_stream(&dev->sd, 0);
0668 }
0669 
0670 static const struct of_device_id rdacm20_of_ids[] = {
0671     { .compatible = "imi,rdacm20", },
0672     { }
0673 };
0674 MODULE_DEVICE_TABLE(of, rdacm20_of_ids);
0675 
0676 static struct i2c_driver rdacm20_i2c_driver = {
0677     .driver = {
0678         .name   = "rdacm20",
0679         .of_match_table = rdacm20_of_ids,
0680     },
0681     .probe_new  = rdacm20_probe,
0682     .remove     = rdacm20_remove,
0683     .shutdown   = rdacm20_shutdown,
0684 };
0685 
0686 module_i2c_driver(rdacm20_i2c_driver);
0687 
0688 MODULE_DESCRIPTION("GMSL Camera driver for RDACM20");
0689 MODULE_AUTHOR("Vladimir Barinov");
0690 MODULE_LICENSE("GPL");
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