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linux/drivers/media/platform/soc_camera/rcar_vin.c

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/*
* SoC-camera host driver for Renesas R-Car VIN unit
*
* Copyright (C) 2011-2013 Renesas Solutions Corp.
* Copyright (C) 2013 Cogent Embedded, Inc., <source@cogentembedded.com>
*
* Based on V4L2 Driver for SuperH Mobile CEU interface "sh_mobile_ceu_camera.c"
*
* Copyright (C) 2008 Magnus Damm
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <media/soc_camera.h>
#include <media/drv-intf/soc_mediabus.h>
#include <media/v4l2-common.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-device.h>
#include <media/v4l2-mediabus.h>
#include <media/v4l2-of.h>
#include <media/v4l2-subdev.h>
#include <media/videobuf2-dma-contig.h>
#include "soc_scale_crop.h"
#define DRV_NAME "rcar_vin"
/* Register offsets for R-Car VIN */
#define VNMC_REG 0x00 /* Video n Main Control Register */
#define VNMS_REG 0x04 /* Video n Module Status Register */
#define VNFC_REG 0x08 /* Video n Frame Capture Register */
#define VNSLPRC_REG 0x0C /* Video n Start Line Pre-Clip Register */
#define VNELPRC_REG 0x10 /* Video n End Line Pre-Clip Register */
#define VNSPPRC_REG 0x14 /* Video n Start Pixel Pre-Clip Register */
#define VNEPPRC_REG 0x18 /* Video n End Pixel Pre-Clip Register */
#define VNSLPOC_REG 0x1C /* Video n Start Line Post-Clip Register */
#define VNELPOC_REG 0x20 /* Video n End Line Post-Clip Register */
#define VNSPPOC_REG 0x24 /* Video n Start Pixel Post-Clip Register */
#define VNEPPOC_REG 0x28 /* Video n End Pixel Post-Clip Register */
#define VNIS_REG 0x2C /* Video n Image Stride Register */
#define VNMB_REG(m) (0x30 + ((m) << 2)) /* Video n Memory Base m Register */
#define VNIE_REG 0x40 /* Video n Interrupt Enable Register */
#define VNINTS_REG 0x44 /* Video n Interrupt Status Register */
#define VNSI_REG 0x48 /* Video n Scanline Interrupt Register */
#define VNMTC_REG 0x4C /* Video n Memory Transfer Control Register */
#define VNYS_REG 0x50 /* Video n Y Scale Register */
#define VNXS_REG 0x54 /* Video n X Scale Register */
#define VNDMR_REG 0x58 /* Video n Data Mode Register */
#define VNDMR2_REG 0x5C /* Video n Data Mode Register 2 */
#define VNUVAOF_REG 0x60 /* Video n UV Address Offset Register */
#define VNC1A_REG 0x80 /* Video n Coefficient Set C1A Register */
#define VNC1B_REG 0x84 /* Video n Coefficient Set C1B Register */
#define VNC1C_REG 0x88 /* Video n Coefficient Set C1C Register */
#define VNC2A_REG 0x90 /* Video n Coefficient Set C2A Register */
#define VNC2B_REG 0x94 /* Video n Coefficient Set C2B Register */
#define VNC2C_REG 0x98 /* Video n Coefficient Set C2C Register */
#define VNC3A_REG 0xA0 /* Video n Coefficient Set C3A Register */
#define VNC3B_REG 0xA4 /* Video n Coefficient Set C3B Register */
#define VNC3C_REG 0xA8 /* Video n Coefficient Set C3C Register */
#define VNC4A_REG 0xB0 /* Video n Coefficient Set C4A Register */
#define VNC4B_REG 0xB4 /* Video n Coefficient Set C4B Register */
#define VNC4C_REG 0xB8 /* Video n Coefficient Set C4C Register */
#define VNC5A_REG 0xC0 /* Video n Coefficient Set C5A Register */
#define VNC5B_REG 0xC4 /* Video n Coefficient Set C5B Register */
#define VNC5C_REG 0xC8 /* Video n Coefficient Set C5C Register */
#define VNC6A_REG 0xD0 /* Video n Coefficient Set C6A Register */
#define VNC6B_REG 0xD4 /* Video n Coefficient Set C6B Register */
#define VNC6C_REG 0xD8 /* Video n Coefficient Set C6C Register */
#define VNC7A_REG 0xE0 /* Video n Coefficient Set C7A Register */
#define VNC7B_REG 0xE4 /* Video n Coefficient Set C7B Register */
#define VNC7C_REG 0xE8 /* Video n Coefficient Set C7C Register */
#define VNC8A_REG 0xF0 /* Video n Coefficient Set C8A Register */
#define VNC8B_REG 0xF4 /* Video n Coefficient Set C8B Register */
#define VNC8C_REG 0xF8 /* Video n Coefficient Set C8C Register */
/* Register bit fields for R-Car VIN */
/* Video n Main Control Register bits */
#define VNMC_FOC (1 << 21)
#define VNMC_YCAL (1 << 19)
#define VNMC_INF_YUV8_BT656 (0 << 16)
#define VNMC_INF_YUV8_BT601 (1 << 16)
#define VNMC_INF_YUV10_BT656 (2 << 16)
#define VNMC_INF_YUV10_BT601 (3 << 16)
#define VNMC_INF_YUV16 (5 << 16)
#define VNMC_INF_RGB888 (6 << 16)
#define VNMC_VUP (1 << 10)
#define VNMC_IM_ODD (0 << 3)
#define VNMC_IM_ODD_EVEN (1 << 3)
#define VNMC_IM_EVEN (2 << 3)
#define VNMC_IM_FULL (3 << 3)
#define VNMC_BPS (1 << 1)
#define VNMC_ME (1 << 0)
/* Video n Module Status Register bits */
#define VNMS_FBS_MASK (3 << 3)
#define VNMS_FBS_SHIFT 3
#define VNMS_AV (1 << 1)
#define VNMS_CA (1 << 0)
/* Video n Frame Capture Register bits */
#define VNFC_C_FRAME (1 << 1)
#define VNFC_S_FRAME (1 << 0)
/* Video n Interrupt Enable Register bits */
#define VNIE_FIE (1 << 4)
#define VNIE_EFE (1 << 1)
/* Video n Data Mode Register bits */
#define VNDMR_EXRGB (1 << 8)
#define VNDMR_BPSM (1 << 4)
#define VNDMR_DTMD_YCSEP (1 << 1)
#define VNDMR_DTMD_ARGB1555 (1 << 0)
/* Video n Data Mode Register 2 bits */
#define VNDMR2_VPS (1 << 30)
#define VNDMR2_HPS (1 << 29)
#define VNDMR2_FTEV (1 << 17)
#define VNDMR2_VLV(n) ((n & 0xf) << 12)
#define VIN_MAX_WIDTH 2048
#define VIN_MAX_HEIGHT 2048
#define TIMEOUT_MS 100
#define RCAR_VIN_HSYNC_ACTIVE_LOW (1 << 0)
#define RCAR_VIN_VSYNC_ACTIVE_LOW (1 << 1)
#define RCAR_VIN_BT601 (1 << 2)
#define RCAR_VIN_BT656 (1 << 3)
enum chip_id {
RCAR_GEN2,
RCAR_H1,
RCAR_M1,
RCAR_E1,
};
struct vin_coeff {
unsigned short xs_value;
u32 coeff_set[24];
};
static const struct vin_coeff vin_coeff_set[] = {
{ 0x0000, {
0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000 },
},
{ 0x1000, {
0x000fa400, 0x000fa400, 0x09625902,
0x000003f8, 0x00000403, 0x3de0d9f0,
0x001fffed, 0x00000804, 0x3cc1f9c3,
0x001003de, 0x00000c01, 0x3cb34d7f,
0x002003d2, 0x00000c00, 0x3d24a92d,
0x00200bca, 0x00000bff, 0x3df600d2,
0x002013cc, 0x000007ff, 0x3ed70c7e,
0x00100fde, 0x00000000, 0x3f87c036 },
},
{ 0x1200, {
0x002ffff1, 0x002ffff1, 0x02a0a9c8,
0x002003e7, 0x001ffffa, 0x000185bc,
0x002007dc, 0x000003ff, 0x3e52859c,
0x00200bd4, 0x00000002, 0x3d53996b,
0x00100fd0, 0x00000403, 0x3d04ad2d,
0x00000bd5, 0x00000403, 0x3d35ace7,
0x3ff003e4, 0x00000801, 0x3dc674a1,
0x3fffe800, 0x00000800, 0x3e76f461 },
},
{ 0x1400, {
0x00100be3, 0x00100be3, 0x04d1359a,
0x00000fdb, 0x002003ed, 0x0211fd93,
0x00000fd6, 0x002003f4, 0x0002d97b,
0x000007d6, 0x002ffffb, 0x3e93b956,
0x3ff003da, 0x001003ff, 0x3db49926,
0x3fffefe9, 0x00100001, 0x3d655cee,
0x3fffd400, 0x00000003, 0x3d65f4b6,
0x000fb421, 0x00000402, 0x3dc6547e },
},
{ 0x1600, {
0x00000bdd, 0x00000bdd, 0x06519578,
0x3ff007da, 0x00000be3, 0x03c24973,
0x3ff003d9, 0x00000be9, 0x01b30d5f,
0x3ffff7df, 0x001003f1, 0x0003c542,
0x000fdfec, 0x001003f7, 0x3ec4711d,
0x000fc400, 0x002ffffd, 0x3df504f1,
0x001fa81a, 0x002ffc00, 0x3d957cc2,
0x002f8c3c, 0x00100000, 0x3db5c891 },
},
{ 0x1800, {
0x3ff003dc, 0x3ff003dc, 0x0791e558,
0x000ff7dd, 0x3ff007de, 0x05328554,
0x000fe7e3, 0x3ff00be2, 0x03232546,
0x000fd7ee, 0x000007e9, 0x0143bd30,
0x001fb800, 0x000007ee, 0x00044511,
0x002fa015, 0x000007f4, 0x3ef4bcee,
0x002f8832, 0x001003f9, 0x3e4514c7,
0x001f7853, 0x001003fd, 0x3de54c9f },
},
{ 0x1a00, {
0x000fefe0, 0x000fefe0, 0x08721d3c,
0x001fdbe7, 0x000ffbde, 0x0652a139,
0x001fcbf0, 0x000003df, 0x0463292e,
0x002fb3ff, 0x3ff007e3, 0x0293a91d,
0x002f9c12, 0x3ff00be7, 0x01241905,
0x001f8c29, 0x000007ed, 0x3fe470eb,
0x000f7c46, 0x000007f2, 0x3f04b8ca,
0x3fef7865, 0x000007f6, 0x3e74e4a8 },
},
{ 0x1c00, {
0x001fd3e9, 0x001fd3e9, 0x08f23d26,
0x002fbff3, 0x001fe3e4, 0x0712ad23,
0x002fa800, 0x000ff3e0, 0x05631d1b,
0x001f9810, 0x000ffbe1, 0x03b3890d,
0x000f8c23, 0x000003e3, 0x0233e8fa,
0x3fef843b, 0x000003e7, 0x00f430e4,
0x3fbf8456, 0x3ff00bea, 0x00046cc8,
0x3f8f8c72, 0x3ff00bef, 0x3f3490ac },
},
{ 0x1e00, {
0x001fbbf4, 0x001fbbf4, 0x09425112,
0x001fa800, 0x002fc7ed, 0x0792b110,
0x000f980e, 0x001fdbe6, 0x0613110a,
0x3fff8c20, 0x001fe7e3, 0x04a368fd,
0x3fcf8c33, 0x000ff7e2, 0x0343b8ed,
0x3f9f8c4a, 0x000fffe3, 0x0203f8da,
0x3f5f9c61, 0x000003e6, 0x00e428c5,
0x3f1fb07b, 0x000003eb, 0x3fe440af },
},
{ 0x2000, {
0x000fa400, 0x000fa400, 0x09625902,
0x3fff980c, 0x001fb7f5, 0x0812b0ff,
0x3fdf901c, 0x001fc7ed, 0x06b2fcfa,
0x3faf902d, 0x001fd3e8, 0x055348f1,
0x3f7f983f, 0x001fe3e5, 0x04038ce3,
0x3f3fa454, 0x001fefe3, 0x02e3c8d1,
0x3f0fb86a, 0x001ff7e4, 0x01c3e8c0,
0x3ecfd880, 0x000fffe6, 0x00c404ac },
},
{ 0x2200, {
0x3fdf9c0b, 0x3fdf9c0b, 0x09725cf4,
0x3fbf9818, 0x3fffa400, 0x0842a8f1,
0x3f8f9827, 0x000fb3f7, 0x0702f0ec,
0x3f5fa037, 0x000fc3ef, 0x05d330e4,
0x3f2fac49, 0x001fcfea, 0x04a364d9,
0x3effc05c, 0x001fdbe7, 0x038394ca,
0x3ecfdc6f, 0x001fe7e6, 0x0273b0bb,
0x3ea00083, 0x001fefe6, 0x0183c0a9 },
},
{ 0x2400, {
0x3f9fa014, 0x3f9fa014, 0x098260e6,
0x3f7f9c23, 0x3fcf9c0a, 0x08629ce5,
0x3f4fa431, 0x3fefa400, 0x0742d8e1,
0x3f1fb440, 0x3fffb3f8, 0x062310d9,
0x3eefc850, 0x000fbbf2, 0x050340d0,
0x3ecfe062, 0x000fcbec, 0x041364c2,
0x3ea00073, 0x001fd3ea, 0x03037cb5,
0x3e902086, 0x001fdfe8, 0x022388a5 },
},
{ 0x2600, {
0x3f5fa81e, 0x3f5fa81e, 0x096258da,
0x3f3fac2b, 0x3f8fa412, 0x088290d8,
0x3f0fbc38, 0x3fafa408, 0x0772c8d5,
0x3eefcc47, 0x3fcfa800, 0x0672f4ce,
0x3ecfe456, 0x3fefaffa, 0x05531cc6,
0x3eb00066, 0x3fffbbf3, 0x047334bb,
0x3ea01c77, 0x000fc7ee, 0x039348ae,
0x3ea04486, 0x000fd3eb, 0x02b350a1 },
},
{ 0x2800, {
0x3f2fb426, 0x3f2fb426, 0x094250ce,
0x3f0fc032, 0x3f4fac1b, 0x086284cd,
0x3eefd040, 0x3f7fa811, 0x0782acc9,
0x3ecfe84c, 0x3f9fa807, 0x06a2d8c4,
0x3eb0005b, 0x3fbfac00, 0x05b2f4bc,
0x3eb0186a, 0x3fdfb3fa, 0x04c308b4,
0x3eb04077, 0x3fefbbf4, 0x03f31ca8,
0x3ec06884, 0x000fbff2, 0x03031c9e },
},
{ 0x2a00, {
0x3f0fc42d, 0x3f0fc42d, 0x090240c4,
0x3eefd439, 0x3f2fb822, 0x08526cc2,
0x3edfe845, 0x3f4fb018, 0x078294bf,
0x3ec00051, 0x3f6fac0f, 0x06b2b4bb,
0x3ec0185f, 0x3f8fac07, 0x05e2ccb4,
0x3ec0386b, 0x3fafac00, 0x0502e8ac,
0x3ed05c77, 0x3fcfb3fb, 0x0432f0a3,
0x3ef08482, 0x3fdfbbf6, 0x0372f898 },
},
{ 0x2c00, {
0x3eefdc31, 0x3eefdc31, 0x08e238b8,
0x3edfec3d, 0x3f0fc828, 0x082258b9,
0x3ed00049, 0x3f1fc01e, 0x077278b6,
0x3ed01455, 0x3f3fb815, 0x06c294b2,
0x3ed03460, 0x3f5fb40d, 0x0602acac,
0x3ef0506c, 0x3f7fb006, 0x0542c0a4,
0x3f107476, 0x3f9fb400, 0x0472c89d,
0x3f309c80, 0x3fbfb7fc, 0x03b2cc94 },
},
{ 0x2e00, {
0x3eefec37, 0x3eefec37, 0x088220b0,
0x3ee00041, 0x3effdc2d, 0x07f244ae,
0x3ee0144c, 0x3f0fd023, 0x07625cad,
0x3ef02c57, 0x3f1fc81a, 0x06c274a9,
0x3f004861, 0x3f3fbc13, 0x060288a6,
0x3f20686b, 0x3f5fb80c, 0x05529c9e,
0x3f408c74, 0x3f6fb805, 0x04b2ac96,
0x3f80ac7e, 0x3f8fb800, 0x0402ac8e },
},
{ 0x3000, {
0x3ef0003a, 0x3ef0003a, 0x084210a6,
0x3ef01045, 0x3effec32, 0x07b228a7,
0x3f00284e, 0x3f0fdc29, 0x073244a4,
0x3f104058, 0x3f0fd420, 0x06a258a2,
0x3f305c62, 0x3f2fc818, 0x0612689d,
0x3f508069, 0x3f3fc011, 0x05728496,
0x3f80a072, 0x3f4fc00a, 0x04d28c90,
0x3fc0c07b, 0x3f6fbc04, 0x04429088 },
},
{ 0x3200, {
0x3f00103e, 0x3f00103e, 0x07f1fc9e,
0x3f102447, 0x3f000035, 0x0782149d,
0x3f203c4f, 0x3f0ff02c, 0x07122c9c,
0x3f405458, 0x3f0fe424, 0x06924099,
0x3f607061, 0x3f1fd41d, 0x06024c97,
0x3f909068, 0x3f2fcc16, 0x05726490,
0x3fc0b070, 0x3f3fc80f, 0x04f26c8a,
0x0000d077, 0x3f4fc409, 0x04627484 },
},
{ 0x3400, {
0x3f202040, 0x3f202040, 0x07a1e898,
0x3f303449, 0x3f100c38, 0x0741fc98,
0x3f504c50, 0x3f10002f, 0x06e21495,
0x3f706459, 0x3f1ff028, 0x06722492,
0x3fa08060, 0x3f1fe421, 0x05f2348f,
0x3fd09c67, 0x3f1fdc19, 0x05824c89,
0x0000bc6e, 0x3f2fd014, 0x04f25086,
0x0040dc74, 0x3f3fcc0d, 0x04825c7f },
},
{ 0x3600, {
0x3f403042, 0x3f403042, 0x0761d890,
0x3f504848, 0x3f301c3b, 0x0701f090,
0x3f805c50, 0x3f200c33, 0x06a2008f,
0x3fa07458, 0x3f10002b, 0x06520c8d,
0x3fd0905e, 0x3f1ff424, 0x05e22089,
0x0000ac65, 0x3f1fe81d, 0x05823483,
0x0030cc6a, 0x3f2fdc18, 0x04f23c81,
0x0080e871, 0x3f2fd412, 0x0482407c },
},
{ 0x3800, {
0x3f604043, 0x3f604043, 0x0721c88a,
0x3f80544a, 0x3f502c3c, 0x06d1d88a,
0x3fb06851, 0x3f301c35, 0x0681e889,
0x3fd08456, 0x3f30082f, 0x0611fc88,
0x00009c5d, 0x3f200027, 0x05d20884,
0x0030b863, 0x3f2ff421, 0x05621880,
0x0070d468, 0x3f2fe81b, 0x0502247c,
0x00c0ec6f, 0x3f2fe015, 0x04a22877 },
},
{ 0x3a00, {
0x3f904c44, 0x3f904c44, 0x06e1b884,
0x3fb0604a, 0x3f70383e, 0x0691c885,
0x3fe07451, 0x3f502c36, 0x0661d483,
0x00009055, 0x3f401831, 0x0601ec81,
0x0030a85b, 0x3f300c2a, 0x05b1f480,
0x0070c061, 0x3f300024, 0x0562047a,
0x00b0d867, 0x3f3ff41e, 0x05020c77,
0x00f0f46b, 0x3f2fec19, 0x04a21474 },
},
{ 0x3c00, {
0x3fb05c43, 0x3fb05c43, 0x06c1b07e,
0x3fe06c4b, 0x3f902c3f, 0x0681c081,
0x0000844f, 0x3f703838, 0x0631cc7d,
0x00309855, 0x3f602433, 0x05d1d47e,
0x0060b459, 0x3f50142e, 0x0581e47b,
0x00a0c85f, 0x3f400828, 0x0531f078,
0x00e0e064, 0x3f300021, 0x0501fc73,
0x00b0fc6a, 0x3f3ff41d, 0x04a20873 },
},
{ 0x3e00, {
0x3fe06444, 0x3fe06444, 0x0681a07a,
0x00007849, 0x3fc0503f, 0x0641b07a,
0x0020904d, 0x3fa0403a, 0x05f1c07a,
0x0060a453, 0x3f803034, 0x05c1c878,
0x0090b858, 0x3f70202f, 0x0571d477,
0x00d0d05d, 0x3f501829, 0x0531e073,
0x0110e462, 0x3f500825, 0x04e1e471,
0x01510065, 0x3f40001f, 0x04a1f06d },
},
{ 0x4000, {
0x00007044, 0x00007044, 0x06519476,
0x00208448, 0x3fe05c3f, 0x0621a476,
0x0050984d, 0x3fc04c3a, 0x05e1b075,
0x0080ac52, 0x3fa03c35, 0x05a1b875,
0x00c0c056, 0x3f803030, 0x0561c473,
0x0100d45b, 0x3f70202b, 0x0521d46f,
0x0140e860, 0x3f601427, 0x04d1d46e,
0x01810064, 0x3f500822, 0x0491dc6b },
},
{ 0x5000, {
0x0110a442, 0x0110a442, 0x0551545e,
0x0140b045, 0x00e0983f, 0x0531585f,
0x0160c047, 0x00c08c3c, 0x0511645e,
0x0190cc4a, 0x00908039, 0x04f1685f,
0x01c0dc4c, 0x00707436, 0x04d1705e,
0x0200e850, 0x00506833, 0x04b1785b,
0x0230f453, 0x00305c30, 0x0491805a,
0x02710056, 0x0010542d, 0x04718059 },
},
{ 0x6000, {
0x01c0bc40, 0x01c0bc40, 0x04c13052,
0x01e0c841, 0x01a0b43d, 0x04c13851,
0x0210cc44, 0x0180a83c, 0x04a13453,
0x0230d845, 0x0160a03a, 0x04913c52,
0x0260e047, 0x01409838, 0x04714052,
0x0280ec49, 0x01208c37, 0x04514c50,
0x02b0f44b, 0x01008435, 0x04414c50,
0x02d1004c, 0x00e07c33, 0x0431544f },
},
{ 0x7000, {
0x0230c83e, 0x0230c83e, 0x04711c4c,
0x0250d03f, 0x0210c43c, 0x0471204b,
0x0270d840, 0x0200b83c, 0x0451244b,
0x0290dc42, 0x01e0b43a, 0x0441244c,
0x02b0e443, 0x01c0b038, 0x0441284b,
0x02d0ec44, 0x01b0a438, 0x0421304a,
0x02f0f445, 0x0190a036, 0x04213449,
0x0310f847, 0x01709c34, 0x04213848 },
},
{ 0x8000, {
0x0280d03d, 0x0280d03d, 0x04310c48,
0x02a0d43e, 0x0270c83c, 0x04311047,
0x02b0dc3e, 0x0250c83a, 0x04311447,
0x02d0e040, 0x0240c03a, 0x04211446,
0x02e0e840, 0x0220bc39, 0x04111847,
0x0300e842, 0x0210b438, 0x04012445,
0x0310f043, 0x0200b037, 0x04012045,
0x0330f444, 0x01e0ac36, 0x03f12445 },
},
{ 0xefff, {
0x0340dc3a, 0x0340dc3a, 0x03b0ec40,
0x0340e03a, 0x0330e039, 0x03c0f03e,
0x0350e03b, 0x0330dc39, 0x03c0ec3e,
0x0350e43a, 0x0320dc38, 0x03c0f43e,
0x0360e43b, 0x0320d839, 0x03b0f03e,
0x0360e83b, 0x0310d838, 0x03c0fc3b,
0x0370e83b, 0x0310d439, 0x03a0f83d,
0x0370e83c, 0x0300d438, 0x03b0fc3c },
}
};
enum rcar_vin_state {
STOPPED = 0,
RUNNING,
STOPPING,
};
struct rcar_vin_priv {
void __iomem *base;
spinlock_t lock;
int sequence;
/* State of the VIN module in capturing mode */
enum rcar_vin_state state;
struct soc_camera_host ici;
struct list_head capture;
#define MAX_BUFFER_NUM 3
struct vb2_v4l2_buffer *queue_buf[MAX_BUFFER_NUM];
struct vb2_alloc_ctx *alloc_ctx;
enum v4l2_field field;
unsigned int pdata_flags;
unsigned int vb_count;
unsigned int nr_hw_slots;
bool request_to_stop;
struct completion capture_stop;
enum chip_id chip;
};
#define is_continuous_transfer(priv) (priv->vb_count > MAX_BUFFER_NUM)
struct rcar_vin_buffer {
struct vb2_v4l2_buffer vb;
struct list_head list;
};
#define to_buf_list(vb2_buffer) (&container_of(vb2_buffer, \
struct rcar_vin_buffer, \
vb)->list)
struct rcar_vin_cam {
/* VIN offsets within the camera output, before the VIN scaler */
unsigned int vin_left;
unsigned int vin_top;
/* Client output, as seen by the VIN */
unsigned int width;
unsigned int height;
/* User window from S_FMT */
unsigned int out_width;
unsigned int out_height;
/*
* User window from S_CROP / G_CROP, produced by client cropping and
* scaling, VIN scaling and VIN cropping, mapped back onto the client
* input window
*/
struct v4l2_rect subrect;
/* Camera cropping rectangle */
struct v4l2_rect rect;
const struct soc_mbus_pixelfmt *extra_fmt;
};
/*
* .queue_setup() is called to check whether the driver can accept the requested
* number of buffers and to fill in plane sizes for the current frame format if
* required
*/
static int rcar_vin_videobuf_setup(struct vb2_queue *vq,
unsigned int *count,
unsigned int *num_planes,
unsigned int sizes[], void *alloc_ctxs[])
{
struct soc_camera_device *icd = soc_camera_from_vb2q(vq);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct rcar_vin_priv *priv = ici->priv;
alloc_ctxs[0] = priv->alloc_ctx;
if (!vq->num_buffers)
priv->sequence = 0;
if (!*count)
*count = 2;
priv->vb_count = *count;
/* Number of hardware slots */
if (is_continuous_transfer(priv))
priv->nr_hw_slots = MAX_BUFFER_NUM;
else
priv->nr_hw_slots = 1;
if (*num_planes)
return sizes[0] < icd->sizeimage ? -EINVAL : 0;
sizes[0] = icd->sizeimage;
*num_planes = 1;
dev_dbg(icd->parent, "count=%d, size=%u\n", *count, sizes[0]);
return 0;
}
static int rcar_vin_setup(struct rcar_vin_priv *priv)
{
struct soc_camera_device *icd = priv->ici.icd;
struct rcar_vin_cam *cam = icd->host_priv;
u32 vnmc, dmr, interrupts;
bool progressive = false, output_is_yuv = false, input_is_yuv = false;
switch (priv->field) {
case V4L2_FIELD_TOP:
vnmc = VNMC_IM_ODD;
break;
case V4L2_FIELD_BOTTOM:
vnmc = VNMC_IM_EVEN;
break;
case V4L2_FIELD_INTERLACED:
case V4L2_FIELD_INTERLACED_TB:
vnmc = VNMC_IM_FULL;
break;
case V4L2_FIELD_INTERLACED_BT:
vnmc = VNMC_IM_FULL | VNMC_FOC;
break;
case V4L2_FIELD_NONE:
if (is_continuous_transfer(priv)) {
vnmc = VNMC_IM_ODD_EVEN;
progressive = true;
} else {
vnmc = VNMC_IM_ODD;
}
break;
default:
vnmc = VNMC_IM_ODD;
break;
}
/* input interface */
switch (icd->current_fmt->code) {
case MEDIA_BUS_FMT_YUYV8_1X16:
/* BT.601/BT.1358 16bit YCbCr422 */
vnmc |= VNMC_INF_YUV16;
input_is_yuv = true;
break;
case MEDIA_BUS_FMT_YUYV8_2X8:
/* BT.656 8bit YCbCr422 or BT.601 8bit YCbCr422 */
vnmc |= priv->pdata_flags & RCAR_VIN_BT656 ?
VNMC_INF_YUV8_BT656 : VNMC_INF_YUV8_BT601;
input_is_yuv = true;
break;
case MEDIA_BUS_FMT_RGB888_1X24:
vnmc |= VNMC_INF_RGB888;
break;
case MEDIA_BUS_FMT_YUYV10_2X10:
/* BT.656 10bit YCbCr422 or BT.601 10bit YCbCr422 */
vnmc |= priv->pdata_flags & RCAR_VIN_BT656 ?
VNMC_INF_YUV10_BT656 : VNMC_INF_YUV10_BT601;
input_is_yuv = true;
break;
default:
break;
}
/* output format */
switch (icd->current_fmt->host_fmt->fourcc) {
case V4L2_PIX_FMT_NV16:
iowrite32(ALIGN(cam->width * cam->height, 0x80),
priv->base + VNUVAOF_REG);
dmr = VNDMR_DTMD_YCSEP;
output_is_yuv = true;
break;
case V4L2_PIX_FMT_YUYV:
dmr = VNDMR_BPSM;
output_is_yuv = true;
break;
case V4L2_PIX_FMT_UYVY:
dmr = 0;
output_is_yuv = true;
break;
case V4L2_PIX_FMT_RGB555X:
dmr = VNDMR_DTMD_ARGB1555;
break;
case V4L2_PIX_FMT_RGB565:
dmr = 0;
break;
case V4L2_PIX_FMT_RGB32:
if (priv->chip == RCAR_GEN2 || priv->chip == RCAR_H1 ||
priv->chip == RCAR_E1) {
dmr = VNDMR_EXRGB;
break;
}
default:
dev_warn(icd->parent, "Invalid fourcc format (0x%x)\n",
icd->current_fmt->host_fmt->fourcc);
return -EINVAL;
}
/* Always update on field change */
vnmc |= VNMC_VUP;
/* If input and output use the same colorspace, use bypass mode */
if (input_is_yuv == output_is_yuv)
vnmc |= VNMC_BPS;
/* progressive or interlaced mode */
interrupts = progressive ? VNIE_FIE : VNIE_EFE;
/* ack interrupts */
iowrite32(interrupts, priv->base + VNINTS_REG);
/* enable interrupts */
iowrite32(interrupts, priv->base + VNIE_REG);
/* start capturing */
iowrite32(dmr, priv->base + VNDMR_REG);
iowrite32(vnmc | VNMC_ME, priv->base + VNMC_REG);
return 0;
}
static void rcar_vin_capture(struct rcar_vin_priv *priv)
{
if (is_continuous_transfer(priv))
/* Continuous Frame Capture Mode */
iowrite32(VNFC_C_FRAME, priv->base + VNFC_REG);
else
/* Single Frame Capture Mode */
iowrite32(VNFC_S_FRAME, priv->base + VNFC_REG);
}
static void rcar_vin_request_capture_stop(struct rcar_vin_priv *priv)
{
priv->state = STOPPING;
/* set continuous & single transfer off */
iowrite32(0, priv->base + VNFC_REG);
/* disable capture (release DMA buffer), reset */
iowrite32(ioread32(priv->base + VNMC_REG) & ~VNMC_ME,
priv->base + VNMC_REG);
/* update the status if stopped already */
if (!(ioread32(priv->base + VNMS_REG) & VNMS_CA))
priv->state = STOPPED;
}
static int rcar_vin_get_free_hw_slot(struct rcar_vin_priv *priv)
{
int slot;
for (slot = 0; slot < priv->nr_hw_slots; slot++)
if (priv->queue_buf[slot] == NULL)
return slot;
return -1;
}
static int rcar_vin_hw_ready(struct rcar_vin_priv *priv)
{
/* Ensure all HW slots are filled */
return rcar_vin_get_free_hw_slot(priv) < 0 ? 1 : 0;
}
/* Moves a buffer from the queue to the HW slots */
static int rcar_vin_fill_hw_slot(struct rcar_vin_priv *priv)
{
struct vb2_v4l2_buffer *vbuf;
dma_addr_t phys_addr_top;
int slot;
if (list_empty(&priv->capture))
return 0;
/* Find a free HW slot */
slot = rcar_vin_get_free_hw_slot(priv);
if (slot < 0)
return 0;
vbuf = &list_entry(priv->capture.next,
struct rcar_vin_buffer, list)->vb;
list_del_init(to_buf_list(vbuf));
priv->queue_buf[slot] = vbuf;
phys_addr_top = vb2_dma_contig_plane_dma_addr(&vbuf->vb2_buf, 0);
iowrite32(phys_addr_top, priv->base + VNMB_REG(slot));
return 1;
}
static void rcar_vin_videobuf_queue(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct rcar_vin_priv *priv = ici->priv;
unsigned long size;
size = icd->sizeimage;
if (vb2_plane_size(vb, 0) < size) {
dev_err(icd->parent, "Buffer #%d too small (%lu < %lu)\n",
vb->index, vb2_plane_size(vb, 0), size);
goto error;
}
vb2_set_plane_payload(vb, 0, size);
dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__,
vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0));
spin_lock_irq(&priv->lock);
list_add_tail(to_buf_list(vbuf), &priv->capture);
rcar_vin_fill_hw_slot(priv);
/* If we weren't running, and have enough buffers, start capturing! */
if (priv->state != RUNNING && rcar_vin_hw_ready(priv)) {
if (rcar_vin_setup(priv)) {
/* Submit error */
list_del_init(to_buf_list(vbuf));
spin_unlock_irq(&priv->lock);
goto error;
}
priv->request_to_stop = false;
init_completion(&priv->capture_stop);
priv->state = RUNNING;
rcar_vin_capture(priv);
}
spin_unlock_irq(&priv->lock);
return;
error:
vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
}
/*
* Wait for capture to stop and all in-flight buffers to be finished with by
* the video hardware. This must be called under &priv->lock
*
*/
static void rcar_vin_wait_stop_streaming(struct rcar_vin_priv *priv)
{
while (priv->state != STOPPED) {
/* issue stop if running */
if (priv->state == RUNNING)
rcar_vin_request_capture_stop(priv);
/* wait until capturing has been stopped */
if (priv->state == STOPPING) {
priv->request_to_stop = true;
spin_unlock_irq(&priv->lock);
if (!wait_for_completion_timeout(
&priv->capture_stop,
msecs_to_jiffies(TIMEOUT_MS)))
priv->state = STOPPED;
spin_lock_irq(&priv->lock);
}
}
}
static void rcar_vin_stop_streaming(struct vb2_queue *vq)
{
struct soc_camera_device *icd = soc_camera_from_vb2q(vq);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct rcar_vin_priv *priv = ici->priv;
struct list_head *buf_head, *tmp;
int i;
spin_lock_irq(&priv->lock);
rcar_vin_wait_stop_streaming(priv);
for (i = 0; i < MAX_BUFFER_NUM; i++) {
if (priv->queue_buf[i]) {
vb2_buffer_done(&priv->queue_buf[i]->vb2_buf,
VB2_BUF_STATE_ERROR);
priv->queue_buf[i] = NULL;
}
}
list_for_each_safe(buf_head, tmp, &priv->capture) {
vb2_buffer_done(&list_entry(buf_head,
struct rcar_vin_buffer, list)->vb.vb2_buf,
VB2_BUF_STATE_ERROR);
list_del_init(buf_head);
}
spin_unlock_irq(&priv->lock);
}
static struct vb2_ops rcar_vin_vb2_ops = {
.queue_setup = rcar_vin_videobuf_setup,
.buf_queue = rcar_vin_videobuf_queue,
.stop_streaming = rcar_vin_stop_streaming,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};
static irqreturn_t rcar_vin_irq(int irq, void *data)
{
struct rcar_vin_priv *priv = data;
u32 int_status;
bool can_run = false, hw_stopped;
int slot;
unsigned int handled = 0;
spin_lock(&priv->lock);
int_status = ioread32(priv->base + VNINTS_REG);
if (!int_status)
goto done;
/* ack interrupts */
iowrite32(int_status, priv->base + VNINTS_REG);
handled = 1;
/* nothing to do if capture status is 'STOPPED' */
if (priv->state == STOPPED)
goto done;
hw_stopped = !(ioread32(priv->base + VNMS_REG) & VNMS_CA);
if (!priv->request_to_stop) {
if (is_continuous_transfer(priv))
slot = (ioread32(priv->base + VNMS_REG) &
VNMS_FBS_MASK) >> VNMS_FBS_SHIFT;
else
slot = 0;
priv->queue_buf[slot]->field = priv->field;
priv->queue_buf[slot]->sequence = priv->sequence++;
priv->queue_buf[slot]->vb2_buf.timestamp = ktime_get_ns();
vb2_buffer_done(&priv->queue_buf[slot]->vb2_buf,
VB2_BUF_STATE_DONE);
priv->queue_buf[slot] = NULL;
if (priv->state != STOPPING)
can_run = rcar_vin_fill_hw_slot(priv);
if (hw_stopped || !can_run) {
priv->state = STOPPED;
} else if (is_continuous_transfer(priv) &&
list_empty(&priv->capture) &&
priv->state == RUNNING) {
/*
* The continuous capturing requires an explicit stop
* operation when there is no buffer to be set into
* the VnMBm registers.
*/
rcar_vin_request_capture_stop(priv);
} else {
rcar_vin_capture(priv);
}
} else if (hw_stopped) {
priv->state = STOPPED;
priv->request_to_stop = false;
complete(&priv->capture_stop);
}
done:
spin_unlock(&priv->lock);
return IRQ_RETVAL(handled);
}
static int rcar_vin_add_device(struct soc_camera_device *icd)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct rcar_vin_priv *priv = ici->priv;
int i;
for (i = 0; i < MAX_BUFFER_NUM; i++)
priv->queue_buf[i] = NULL;
pm_runtime_get_sync(ici->v4l2_dev.dev);
dev_dbg(icd->parent, "R-Car VIN driver attached to camera %d\n",
icd->devnum);
return 0;
}
static void rcar_vin_remove_device(struct soc_camera_device *icd)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct rcar_vin_priv *priv = ici->priv;
struct vb2_v4l2_buffer *vbuf;
int i;
/* disable capture, disable interrupts */
iowrite32(ioread32(priv->base + VNMC_REG) & ~VNMC_ME,
priv->base + VNMC_REG);
iowrite32(0, priv->base + VNIE_REG);
priv->state = STOPPED;
priv->request_to_stop = false;
/* make sure active buffer is cancelled */
spin_lock_irq(&priv->lock);
for (i = 0; i < MAX_BUFFER_NUM; i++) {
vbuf = priv->queue_buf[i];
if (vbuf) {
list_del_init(to_buf_list(vbuf));
vb2_buffer_done(&vbuf->vb2_buf, VB2_BUF_STATE_ERROR);
}
}
spin_unlock_irq(&priv->lock);
pm_runtime_put(ici->v4l2_dev.dev);
dev_dbg(icd->parent, "R-Car VIN driver detached from camera %d\n",
icd->devnum);
}
static void set_coeff(struct rcar_vin_priv *priv, unsigned short xs)
{
int i;
const struct vin_coeff *p_prev_set = NULL;
const struct vin_coeff *p_set = NULL;
/* Look for suitable coefficient values */
for (i = 0; i < ARRAY_SIZE(vin_coeff_set); i++) {
p_prev_set = p_set;
p_set = &vin_coeff_set[i];
if (xs < p_set->xs_value)
break;
}
/* Use previous value if its XS value is closer */
if (p_prev_set && p_set &&
xs - p_prev_set->xs_value < p_set->xs_value - xs)
p_set = p_prev_set;
/* Set coefficient registers */
iowrite32(p_set->coeff_set[0], priv->base + VNC1A_REG);
iowrite32(p_set->coeff_set[1], priv->base + VNC1B_REG);
iowrite32(p_set->coeff_set[2], priv->base + VNC1C_REG);
iowrite32(p_set->coeff_set[3], priv->base + VNC2A_REG);
iowrite32(p_set->coeff_set[4], priv->base + VNC2B_REG);
iowrite32(p_set->coeff_set[5], priv->base + VNC2C_REG);
iowrite32(p_set->coeff_set[6], priv->base + VNC3A_REG);
iowrite32(p_set->coeff_set[7], priv->base + VNC3B_REG);
iowrite32(p_set->coeff_set[8], priv->base + VNC3C_REG);
iowrite32(p_set->coeff_set[9], priv->base + VNC4A_REG);
iowrite32(p_set->coeff_set[10], priv->base + VNC4B_REG);
iowrite32(p_set->coeff_set[11], priv->base + VNC4C_REG);
iowrite32(p_set->coeff_set[12], priv->base + VNC5A_REG);
iowrite32(p_set->coeff_set[13], priv->base + VNC5B_REG);
iowrite32(p_set->coeff_set[14], priv->base + VNC5C_REG);
iowrite32(p_set->coeff_set[15], priv->base + VNC6A_REG);
iowrite32(p_set->coeff_set[16], priv->base + VNC6B_REG);
iowrite32(p_set->coeff_set[17], priv->base + VNC6C_REG);
iowrite32(p_set->coeff_set[18], priv->base + VNC7A_REG);
iowrite32(p_set->coeff_set[19], priv->base + VNC7B_REG);
iowrite32(p_set->coeff_set[20], priv->base + VNC7C_REG);
iowrite32(p_set->coeff_set[21], priv->base + VNC8A_REG);
iowrite32(p_set->coeff_set[22], priv->base + VNC8B_REG);
iowrite32(p_set->coeff_set[23], priv->base + VNC8C_REG);
}
/* rect is guaranteed to not exceed the scaled camera rectangle */
static int rcar_vin_set_rect(struct soc_camera_device *icd)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct rcar_vin_cam *cam = icd->host_priv;
struct rcar_vin_priv *priv = ici->priv;
unsigned int left_offset, top_offset;
unsigned char dsize = 0;
struct v4l2_rect *cam_subrect = &cam->subrect;
u32 value;
dev_dbg(icd->parent, "Crop %ux%u@%u:%u\n",
icd->user_width, icd->user_height, cam->vin_left, cam->vin_top);
left_offset = cam->vin_left;
top_offset = cam->vin_top;
if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_RGB32 &&
priv->chip == RCAR_E1)
dsize = 1;
dev_dbg(icd->parent, "Cam %ux%u@%u:%u\n",
cam->width, cam->height, cam->vin_left, cam->vin_top);
dev_dbg(icd->parent, "Cam subrect %ux%u@%u:%u\n",
cam_subrect->width, cam_subrect->height,
cam_subrect->left, cam_subrect->top);
/* Set Start/End Pixel/Line Pre-Clip */
iowrite32(left_offset << dsize, priv->base + VNSPPRC_REG);
iowrite32((left_offset + cam_subrect->width - 1) << dsize,
priv->base + VNEPPRC_REG);
switch (priv->field) {
case V4L2_FIELD_INTERLACED:
case V4L2_FIELD_INTERLACED_TB:
case V4L2_FIELD_INTERLACED_BT:
iowrite32(top_offset / 2, priv->base + VNSLPRC_REG);
iowrite32((top_offset + cam_subrect->height) / 2 - 1,
priv->base + VNELPRC_REG);
break;
default:
iowrite32(top_offset, priv->base + VNSLPRC_REG);
iowrite32(top_offset + cam_subrect->height - 1,
priv->base + VNELPRC_REG);
break;
}
/* Set scaling coefficient */
value = 0;
if (cam_subrect->height != cam->out_height)
value = (4096 * cam_subrect->height) / cam->out_height;
dev_dbg(icd->parent, "YS Value: %x\n", value);
iowrite32(value, priv->base + VNYS_REG);
value = 0;
if (cam_subrect->width != cam->out_width)
value = (4096 * cam_subrect->width) / cam->out_width;
/* Horizontal upscaling is up to double size */
if (0 < value && value < 2048)
value = 2048;
dev_dbg(icd->parent, "XS Value: %x\n", value);
iowrite32(value, priv->base + VNXS_REG);
/* Horizontal upscaling is carried out by scaling down from double size */
if (value < 4096)
value *= 2;
set_coeff(priv, value);
/* Set Start/End Pixel/Line Post-Clip */
iowrite32(0, priv->base + VNSPPOC_REG);
iowrite32(0, priv->base + VNSLPOC_REG);
iowrite32((cam->out_width - 1) << dsize, priv->base + VNEPPOC_REG);
switch (priv->field) {
case V4L2_FIELD_INTERLACED:
case V4L2_FIELD_INTERLACED_TB:
case V4L2_FIELD_INTERLACED_BT:
iowrite32(cam->out_height / 2 - 1,
priv->base + VNELPOC_REG);
break;
default:
iowrite32(cam->out_height - 1, priv->base + VNELPOC_REG);
break;
}
iowrite32(ALIGN(cam->out_width, 0x10), priv->base + VNIS_REG);
return 0;
}
static void capture_stop_preserve(struct rcar_vin_priv *priv, u32 *vnmc)
{
*vnmc = ioread32(priv->base + VNMC_REG);
/* module disable */
iowrite32(*vnmc & ~VNMC_ME, priv->base + VNMC_REG);
}
static void capture_restore(struct rcar_vin_priv *priv, u32 vnmc)
{
unsigned long timeout = jiffies + 10 * HZ;
/*
* Wait until the end of the current frame. It can take a long time,
* but if it has been aborted by a MRST1 reset, it should exit sooner.
*/
while ((ioread32(priv->base + VNMS_REG) & VNMS_AV) &&
time_before(jiffies, timeout))
msleep(1);
if (time_after(jiffies, timeout)) {
dev_err(priv->ici.v4l2_dev.dev,
"Timeout waiting for frame end! Interface problem?\n");
return;
}
iowrite32(vnmc, priv->base + VNMC_REG);
}
#define VIN_MBUS_FLAGS (V4L2_MBUS_MASTER | \
V4L2_MBUS_PCLK_SAMPLE_RISING | \
V4L2_MBUS_HSYNC_ACTIVE_HIGH | \
V4L2_MBUS_HSYNC_ACTIVE_LOW | \
V4L2_MBUS_VSYNC_ACTIVE_HIGH | \
V4L2_MBUS_VSYNC_ACTIVE_LOW | \
V4L2_MBUS_DATA_ACTIVE_HIGH)
static int rcar_vin_set_bus_param(struct soc_camera_device *icd)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct rcar_vin_priv *priv = ici->priv;
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
struct v4l2_mbus_config cfg;
unsigned long common_flags;
u32 vnmc;
u32 val;
int ret;
capture_stop_preserve(priv, &vnmc);
ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg);
if (!ret) {
common_flags = soc_mbus_config_compatible(&cfg, VIN_MBUS_FLAGS);
if (!common_flags) {
dev_warn(icd->parent,
"MBUS flags incompatible: camera 0x%x, host 0x%x\n",
cfg.flags, VIN_MBUS_FLAGS);
return -EINVAL;
}
} else if (ret != -ENOIOCTLCMD) {
return ret;
} else {
common_flags = VIN_MBUS_FLAGS;
}
/* Make choises, based on platform preferences */
if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) &&
(common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) {
if (priv->pdata_flags & RCAR_VIN_HSYNC_ACTIVE_LOW)
common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH;
else
common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW;
}
if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) &&
(common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) {
if (priv->pdata_flags & RCAR_VIN_VSYNC_ACTIVE_LOW)
common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH;
else
common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW;
}
cfg.flags = common_flags;
ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg);
if (ret < 0 && ret != -ENOIOCTLCMD)
return ret;
val = VNDMR2_FTEV | VNDMR2_VLV(1);
if (!(common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW))
val |= VNDMR2_VPS;
if (!(common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW))
val |= VNDMR2_HPS;
iowrite32(val, priv->base + VNDMR2_REG);
ret = rcar_vin_set_rect(icd);
if (ret < 0)
return ret;
capture_restore(priv, vnmc);
return 0;
}
static int rcar_vin_try_bus_param(struct soc_camera_device *icd,
unsigned char buswidth)
{
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
struct v4l2_mbus_config cfg;
int ret;
ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg);
if (ret == -ENOIOCTLCMD)
return 0;
else if (ret)
return ret;
if (buswidth > 24)
return -EINVAL;
/* check is there common mbus flags */
ret = soc_mbus_config_compatible(&cfg, VIN_MBUS_FLAGS);
if (ret)
return 0;
dev_warn(icd->parent,
"MBUS flags incompatible: camera 0x%x, host 0x%x\n",
cfg.flags, VIN_MBUS_FLAGS);
return -EINVAL;
}
static bool rcar_vin_packing_supported(const struct soc_mbus_pixelfmt *fmt)
{
return fmt->packing == SOC_MBUS_PACKING_NONE ||
(fmt->bits_per_sample > 8 &&
fmt->packing == SOC_MBUS_PACKING_EXTEND16);
}
static const struct soc_mbus_pixelfmt rcar_vin_formats[] = {
{
.fourcc = V4L2_PIX_FMT_NV16,
.name = "NV16",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_2X8_PADHI,
.order = SOC_MBUS_ORDER_LE,
.layout = SOC_MBUS_LAYOUT_PLANAR_Y_C,
},
{
.fourcc = V4L2_PIX_FMT_YUYV,
.name = "YUYV",
.bits_per_sample = 16,
.packing = SOC_MBUS_PACKING_NONE,
.order = SOC_MBUS_ORDER_LE,
.layout = SOC_MBUS_LAYOUT_PACKED,
},
{
.fourcc = V4L2_PIX_FMT_UYVY,
.name = "UYVY",
.bits_per_sample = 16,
.packing = SOC_MBUS_PACKING_NONE,
.order = SOC_MBUS_ORDER_LE,
.layout = SOC_MBUS_LAYOUT_PACKED,
},
{
.fourcc = V4L2_PIX_FMT_RGB565,
.name = "RGB565",
.bits_per_sample = 16,
.packing = SOC_MBUS_PACKING_NONE,
.order = SOC_MBUS_ORDER_LE,
.layout = SOC_MBUS_LAYOUT_PACKED,
},
{
.fourcc = V4L2_PIX_FMT_RGB555X,
.name = "ARGB1555",
.bits_per_sample = 16,
.packing = SOC_MBUS_PACKING_NONE,
.order = SOC_MBUS_ORDER_LE,
.layout = SOC_MBUS_LAYOUT_PACKED,
},
{
.fourcc = V4L2_PIX_FMT_RGB32,
.name = "RGB888",
.bits_per_sample = 32,
.packing = SOC_MBUS_PACKING_NONE,
.order = SOC_MBUS_ORDER_LE,
.layout = SOC_MBUS_LAYOUT_PACKED,
},
};
static int rcar_vin_get_formats(struct soc_camera_device *icd, unsigned int idx,
struct soc_camera_format_xlate *xlate)
{
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
struct device *dev = icd->parent;
int ret, k, n;
int formats = 0;
struct rcar_vin_cam *cam;
struct v4l2_subdev_mbus_code_enum code = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
.index = idx,
};
const struct soc_mbus_pixelfmt *fmt;
ret = v4l2_subdev_call(sd, pad, enum_mbus_code, NULL, &code);
if (ret < 0)
return 0;
fmt = soc_mbus_get_fmtdesc(code.code);
if (!fmt) {
dev_warn(dev, "unsupported format code #%u: %d\n", idx, code.code);
return 0;
}
ret = rcar_vin_try_bus_param(icd, fmt->bits_per_sample);
if (ret < 0)
return 0;
if (!icd->host_priv) {
struct v4l2_subdev_format fmt = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
struct v4l2_mbus_framefmt *mf = &fmt.format;
struct v4l2_rect rect;
struct device *dev = icd->parent;
int shift;
ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &fmt);
if (ret < 0)
return ret;
/* Cache current client geometry */
ret = soc_camera_client_g_rect(sd, &rect);
if (ret == -ENOIOCTLCMD) {
/* Sensor driver doesn't support cropping */
rect.left = 0;
rect.top = 0;
rect.width = mf->width;
rect.height = mf->height;
} else if (ret < 0) {
return ret;
}
/*
* If sensor proposes too large format then try smaller ones:
* 1280x960, 640x480, 320x240
*/
for (shift = 0; shift < 3; shift++) {
if (mf->width <= VIN_MAX_WIDTH &&
mf->height <= VIN_MAX_HEIGHT)
break;
mf->width = 1280 >> shift;
mf->height = 960 >> shift;
ret = v4l2_device_call_until_err(sd->v4l2_dev,
soc_camera_grp_id(icd),
pad, set_fmt, NULL,
&fmt);
if (ret < 0)
return ret;
}
if (shift == 3) {
dev_err(dev,
"Failed to configure the client below %ux%u\n",
mf->width, mf->height);
return -EIO;
}
dev_dbg(dev, "camera fmt %ux%u\n", mf->width, mf->height);
cam = kzalloc(sizeof(*cam), GFP_KERNEL);
if (!cam)
return -ENOMEM;
/*
* We are called with current camera crop,
* initialise subrect with it
*/
cam->rect = rect;
cam->subrect = rect;
cam->width = mf->width;
cam->height = mf->height;
cam->out_width = mf->width;
cam->out_height = mf->height;
icd->host_priv = cam;
} else {
cam = icd->host_priv;
}
/* Beginning of a pass */
if (!idx)
cam->extra_fmt = NULL;
switch (code.code) {
case MEDIA_BUS_FMT_YUYV8_1X16:
case MEDIA_BUS_FMT_YUYV8_2X8:
case MEDIA_BUS_FMT_YUYV10_2X10:
case MEDIA_BUS_FMT_RGB888_1X24:
if (cam->extra_fmt)
break;
/* Add all our formats that can be generated by VIN */
cam->extra_fmt = rcar_vin_formats;
n = ARRAY_SIZE(rcar_vin_formats);
formats += n;
for (k = 0; xlate && k < n; k++, xlate++) {
xlate->host_fmt = &rcar_vin_formats[k];
xlate->code = code.code;
dev_dbg(dev, "Providing format %s using code %d\n",
rcar_vin_formats[k].name, code.code);
}
break;
default:
if (!rcar_vin_packing_supported(fmt))
return 0;
dev_dbg(dev, "Providing format %s in pass-through mode\n",
fmt->name);
break;
}
/* Generic pass-through */
formats++;
if (xlate) {
xlate->host_fmt = fmt;
xlate->code = code.code;
xlate++;
}
return formats;
}
static void rcar_vin_put_formats(struct soc_camera_device *icd)
{
kfree(icd->host_priv);
icd->host_priv = NULL;
}
static int rcar_vin_set_crop(struct soc_camera_device *icd,
const struct v4l2_crop *a)
{
struct v4l2_crop a_writable = *a;
const struct v4l2_rect *rect = &a_writable.c;
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct rcar_vin_priv *priv = ici->priv;
struct v4l2_crop cam_crop;
struct rcar_vin_cam *cam = icd->host_priv;
struct v4l2_rect *cam_rect = &cam_crop.c;
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
struct device *dev = icd->parent;
struct v4l2_subdev_format fmt = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
struct v4l2_mbus_framefmt *mf = &fmt.format;
u32 vnmc;
int ret, i;
dev_dbg(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height,
rect->left, rect->top);
/* During camera cropping its output window can change too, stop VIN */
capture_stop_preserve(priv, &vnmc);
dev_dbg(dev, "VNMC_REG 0x%x\n", vnmc);
/* Apply iterative camera S_CROP for new input window. */
ret = soc_camera_client_s_crop(sd, &a_writable, &cam_crop,
&cam->rect, &cam->subrect);
if (ret < 0)
return ret;
dev_dbg(dev, "camera cropped to %ux%u@%u:%u\n",
cam_rect->width, cam_rect->height,
cam_rect->left, cam_rect->top);
/* On success cam_crop contains current camera crop */
/* Retrieve camera output window */
ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &fmt);
if (ret < 0)
return ret;
if (mf->width > VIN_MAX_WIDTH || mf->height > VIN_MAX_HEIGHT)
return -EINVAL;
/* Cache camera output window */
cam->width = mf->width;
cam->height = mf->height;
icd->user_width = cam->width;
icd->user_height = cam->height;
cam->vin_left = rect->left & ~1;
cam->vin_top = rect->top & ~1;
/* Use VIN cropping to crop to the new window. */
ret = rcar_vin_set_rect(icd);
if (ret < 0)
return ret;
cam->subrect = *rect;
dev_dbg(dev, "VIN cropped to %ux%u@%u:%u\n",
icd->user_width, icd->user_height,
cam->vin_left, cam->vin_top);
/* Restore capture */
for (i = 0; i < MAX_BUFFER_NUM; i++) {
if (priv->queue_buf[i] && priv->state == STOPPED) {
vnmc |= VNMC_ME;
break;
}
}
capture_restore(priv, vnmc);
/* Even if only camera cropping succeeded */
return ret;
}
static int rcar_vin_get_crop(struct soc_camera_device *icd,
struct v4l2_crop *a)
{
struct rcar_vin_cam *cam = icd->host_priv;
a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
a->c = cam->subrect;
return 0;
}
/* Similar to set_crop multistage iterative algorithm */
static int rcar_vin_set_fmt(struct soc_camera_device *icd,
struct v4l2_format *f)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct rcar_vin_priv *priv = ici->priv;
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
struct rcar_vin_cam *cam = icd->host_priv;
struct v4l2_pix_format *pix = &f->fmt.pix;
struct v4l2_mbus_framefmt mf;
struct device *dev = icd->parent;
__u32 pixfmt = pix->pixelformat;
const struct soc_camera_format_xlate *xlate;
unsigned int vin_sub_width = 0, vin_sub_height = 0;
int ret;
bool can_scale;
enum v4l2_field field;
v4l2_std_id std;
dev_dbg(dev, "S_FMT(pix=0x%x, %ux%u)\n",
pixfmt, pix->width, pix->height);
switch (pix->field) {
default:
pix->field = V4L2_FIELD_NONE;
/* fall-through */
case V4L2_FIELD_NONE:
case V4L2_FIELD_TOP:
case V4L2_FIELD_BOTTOM:
case V4L2_FIELD_INTERLACED_TB:
case V4L2_FIELD_INTERLACED_BT:
field = pix->field;
break;
case V4L2_FIELD_INTERLACED:
/* Query for standard if not explicitly mentioned _TB/_BT */
ret = v4l2_subdev_call(sd, video, querystd, &std);
if (ret == -ENOIOCTLCMD) {
field = V4L2_FIELD_NONE;
} else if (ret < 0) {
return ret;
} else {
field = std & V4L2_STD_625_50 ?
V4L2_FIELD_INTERLACED_TB :
V4L2_FIELD_INTERLACED_BT;
}
break;
}
xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
if (!xlate) {
dev_warn(dev, "Format %x not found\n", pixfmt);
return -EINVAL;
}
/* Calculate client output geometry */
soc_camera_calc_client_output(icd, &cam->rect, &cam->subrect, pix, &mf,
12);
mf.field = pix->field;
mf.colorspace = pix->colorspace;
mf.code = xlate->code;
switch (pixfmt) {
case V4L2_PIX_FMT_RGB32:
can_scale = priv->chip != RCAR_E1;
break;
case V4L2_PIX_FMT_UYVY:
case V4L2_PIX_FMT_YUYV:
case V4L2_PIX_FMT_RGB565:
case V4L2_PIX_FMT_RGB555X:
can_scale = true;
break;
default:
can_scale = false;
break;
}
dev_dbg(dev, "request camera output %ux%u\n", mf.width, mf.height);
ret = soc_camera_client_scale(icd, &cam->rect, &cam->subrect,
&mf, &vin_sub_width, &vin_sub_height,
can_scale, 12);
/* Done with the camera. Now see if we can improve the result */
dev_dbg(dev, "Camera %d fmt %ux%u, requested %ux%u\n",
ret, mf.width, mf.height, pix->width, pix->height);
if (ret == -ENOIOCTLCMD)
dev_dbg(dev, "Sensor doesn't support scaling\n");
else if (ret < 0)
return ret;
if (mf.code != xlate->code)
return -EINVAL;
/* Prepare VIN crop */
cam->width = mf.width;
cam->height = mf.height;
/* Use VIN scaling to scale to the requested user window. */
/* We cannot scale up */
if (pix->width > vin_sub_width)
vin_sub_width = pix->width;
if (pix->height > vin_sub_height)
vin_sub_height = pix->height;
pix->colorspace = mf.colorspace;
if (!can_scale) {
pix->width = vin_sub_width;
pix->height = vin_sub_height;
}
/*
* We have calculated CFLCR, the actual configuration will be performed
* in rcar_vin_set_bus_param()
*/
dev_dbg(dev, "W: %u : %u, H: %u : %u\n",
vin_sub_width, pix->width, vin_sub_height, pix->height);
cam->out_width = pix->width;
cam->out_height = pix->height;
icd->current_fmt = xlate;
priv->field = field;
return 0;
}
static int rcar_vin_try_fmt(struct soc_camera_device *icd,
struct v4l2_format *f)
{
const struct soc_camera_format_xlate *xlate;
struct v4l2_pix_format *pix = &f->fmt.pix;
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
struct v4l2_subdev_pad_config pad_cfg;
struct v4l2_subdev_format format = {
.which = V4L2_SUBDEV_FORMAT_TRY,
};
struct v4l2_mbus_framefmt *mf = &format.format;
__u32 pixfmt = pix->pixelformat;
int width, height;
int ret;
xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
if (!xlate) {
xlate = icd->current_fmt;
dev_dbg(icd->parent, "Format %x not found, keeping %x\n",
pixfmt, xlate->host_fmt->fourcc);
pixfmt = xlate->host_fmt->fourcc;
pix->pixelformat = pixfmt;
pix->colorspace = icd->colorspace;
}
/* FIXME: calculate using depth and bus width */
v4l_bound_align_image(&pix->width, 2, VIN_MAX_WIDTH, 1,
&pix->height, 4, VIN_MAX_HEIGHT, 2, 0);
width = pix->width;
height = pix->height;
/* let soc-camera calculate these values */
pix->bytesperline = 0;
pix->sizeimage = 0;
/* limit to sensor capabilities */
mf->width = pix->width;
mf->height = pix->height;
mf->field = pix->field;
mf->code = xlate->code;
mf->colorspace = pix->colorspace;
ret = v4l2_device_call_until_err(sd->v4l2_dev, soc_camera_grp_id(icd),
pad, set_fmt, &pad_cfg, &format);
if (ret < 0)
return ret;
/* Adjust only if VIN cannot scale */
if (pix->width > mf->width * 2)
pix->width = mf->width * 2;
if (pix->height > mf->height * 3)
pix->height = mf->height * 3;
pix->field = mf->field;
pix->colorspace = mf->colorspace;
if (pixfmt == V4L2_PIX_FMT_NV16) {
/* FIXME: check against rect_max after converting soc-camera */
/* We can scale precisely, need a bigger image from camera */
if (pix->width < width || pix->height < height) {
/*
* We presume, the sensor behaves sanely, i.e. if
* requested a bigger rectangle, it will not return a
* smaller one.
*/
mf->width = VIN_MAX_WIDTH;
mf->height = VIN_MAX_HEIGHT;
ret = v4l2_device_call_until_err(sd->v4l2_dev,
soc_camera_grp_id(icd),
pad, set_fmt, &pad_cfg,
&format);
if (ret < 0) {
dev_err(icd->parent,
"client try_fmt() = %d\n", ret);
return ret;
}
}
/* We will scale exactly */
if (mf->width > width)
pix->width = width;
if (mf->height > height)
pix->height = height;
}
return ret;
}
static unsigned int rcar_vin_poll(struct file *file, poll_table *pt)
{
struct soc_camera_device *icd = file->private_data;
return vb2_poll(&icd->vb2_vidq, file, pt);
}
static int rcar_vin_querycap(struct soc_camera_host *ici,
struct v4l2_capability *cap)
{
strlcpy(cap->card, "R_Car_VIN", sizeof(cap->card));
cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s%d", DRV_NAME, ici->nr);
return 0;
}
static int rcar_vin_init_videobuf2(struct vb2_queue *vq,
struct soc_camera_device *icd)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
vq->io_modes = VB2_MMAP | VB2_USERPTR;
vq->drv_priv = icd;
vq->ops = &rcar_vin_vb2_ops;
vq->mem_ops = &vb2_dma_contig_memops;
vq->buf_struct_size = sizeof(struct rcar_vin_buffer);
vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
vq->lock = &ici->host_lock;
return vb2_queue_init(vq);
}
static struct soc_camera_host_ops rcar_vin_host_ops = {
.owner = THIS_MODULE,
.add = rcar_vin_add_device,
.remove = rcar_vin_remove_device,
.get_formats = rcar_vin_get_formats,
.put_formats = rcar_vin_put_formats,
.get_crop = rcar_vin_get_crop,
.set_crop = rcar_vin_set_crop,
.try_fmt = rcar_vin_try_fmt,
.set_fmt = rcar_vin_set_fmt,
.poll = rcar_vin_poll,
.querycap = rcar_vin_querycap,
.set_bus_param = rcar_vin_set_bus_param,
.init_videobuf2 = rcar_vin_init_videobuf2,
};
#ifdef CONFIG_OF
static const struct of_device_id rcar_vin_of_table[] = {
{ .compatible = "renesas,vin-r8a7794", .data = (void *)RCAR_GEN2 },
{ .compatible = "renesas,vin-r8a7793", .data = (void *)RCAR_GEN2 },
{ .compatible = "renesas,vin-r8a7791", .data = (void *)RCAR_GEN2 },
{ .compatible = "renesas,vin-r8a7790", .data = (void *)RCAR_GEN2 },
{ .compatible = "renesas,vin-r8a7779", .data = (void *)RCAR_H1 },
{ .compatible = "renesas,vin-r8a7778", .data = (void *)RCAR_M1 },
{ },
};
MODULE_DEVICE_TABLE(of, rcar_vin_of_table);
#endif
static int rcar_vin_probe(struct platform_device *pdev)
{
const struct of_device_id *match = NULL;
struct rcar_vin_priv *priv;
struct v4l2_of_endpoint ep;
struct device_node *np;
struct resource *mem;
unsigned int pdata_flags;
int irq, ret;
match = of_match_device(of_match_ptr(rcar_vin_of_table), &pdev->dev);
np = of_graph_get_next_endpoint(pdev->dev.of_node, NULL);
if (!np) {
dev_err(&pdev->dev, "could not find endpoint\n");
return -EINVAL;
}
ret = v4l2_of_parse_endpoint(np, &ep);
if (ret) {
dev_err(&pdev->dev, "could not parse endpoint\n");
return ret;
}
if (ep.bus_type == V4L2_MBUS_BT656)
pdata_flags = RCAR_VIN_BT656;
else {
pdata_flags = 0;
if (ep.bus.parallel.flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
pdata_flags |= RCAR_VIN_HSYNC_ACTIVE_LOW;
if (ep.bus.parallel.flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
pdata_flags |= RCAR_VIN_VSYNC_ACTIVE_LOW;
}
of_node_put(np);
dev_dbg(&pdev->dev, "pdata_flags = %08x\n", pdata_flags);
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (mem == NULL)
return -EINVAL;
irq = platform_get_irq(pdev, 0);
if (irq <= 0)
return -EINVAL;
priv = devm_kzalloc(&pdev->dev, sizeof(struct rcar_vin_priv),
GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->base = devm_ioremap_resource(&pdev->dev, mem);
if (IS_ERR(priv->base))
return PTR_ERR(priv->base);
ret = devm_request_irq(&pdev->dev, irq, rcar_vin_irq, IRQF_SHARED,
dev_name(&pdev->dev), priv);
if (ret)
return ret;
priv->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
if (IS_ERR(priv->alloc_ctx))
return PTR_ERR(priv->alloc_ctx);
priv->ici.priv = priv;
priv->ici.v4l2_dev.dev = &pdev->dev;
priv->ici.drv_name = dev_name(&pdev->dev);
priv->ici.ops = &rcar_vin_host_ops;
priv->pdata_flags = pdata_flags;
if (!match) {
priv->ici.nr = pdev->id;
priv->chip = pdev->id_entry->driver_data;
} else {
priv->ici.nr = of_alias_get_id(pdev->dev.of_node, "vin");
priv->chip = (enum chip_id)match->data;
}
spin_lock_init(&priv->lock);
INIT_LIST_HEAD(&priv->capture);
priv->state = STOPPED;
pm_suspend_ignore_children(&pdev->dev, true);
pm_runtime_enable(&pdev->dev);
ret = soc_camera_host_register(&priv->ici);
if (ret)
goto cleanup;
return 0;
cleanup:
pm_runtime_disable(&pdev->dev);
vb2_dma_contig_cleanup_ctx(priv->alloc_ctx);
return ret;
}
static int rcar_vin_remove(struct platform_device *pdev)
{
struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev);
struct rcar_vin_priv *priv = container_of(soc_host,
struct rcar_vin_priv, ici);
soc_camera_host_unregister(soc_host);
pm_runtime_disable(&pdev->dev);
vb2_dma_contig_cleanup_ctx(priv->alloc_ctx);
return 0;
}
static struct platform_driver rcar_vin_driver = {
.probe = rcar_vin_probe,
.remove = rcar_vin_remove,
.driver = {
.name = DRV_NAME,
.of_match_table = of_match_ptr(rcar_vin_of_table),
},
};
module_platform_driver(rcar_vin_driver);
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:rcar_vin");
MODULE_DESCRIPTION("Renesas R-Car VIN camera host driver");
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