--- /dev/null
+/*
+ * 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_data/camera-rcar.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/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_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
+
+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_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_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,
+ const struct v4l2_format *fmt,
+ 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;
+
+ if (fmt) {
+ const struct soc_camera_format_xlate *xlate;
+ unsigned int bytes_per_line;
+ int ret;
+
+ xlate = soc_camera_xlate_by_fourcc(icd,
+ fmt->fmt.pix.pixelformat);
+ if (!xlate)
+ return -EINVAL;
+ ret = soc_mbus_bytes_per_line(fmt->fmt.pix.width,
+ xlate->host_fmt);
+ if (ret < 0)
+ return ret;
+
+ bytes_per_line = max_t(u32, fmt->fmt.pix.bytesperline, ret);
+
+ ret = soc_mbus_image_size(xlate->host_fmt, bytes_per_line,
+ fmt->fmt.pix.height);
+ if (ret < 0)
+ return ret;
+
+ sizes[0] = max_t(u32, fmt->fmt.pix.sizeimage, ret);
+ } else {
+ /* Called from VIDIOC_REQBUFS or in compatibility mode */
+ sizes[0] = icd->sizeimage;
+ }
+
+ alloc_ctxs[0] = priv->alloc_ctx;
+
+ if (!vq->num_buffers)
+ priv->sequence = 0;
+
+ if (!*count)
+ *count = 2;
+ priv->vb_count = *count;
+
+ *num_planes = 1;
+
+ /* Number of hardware slots */
+ if (is_continuous_transfer(priv))
+ priv->nr_hw_slots = MAX_BUFFER_NUM;
+ else
+ priv->nr_hw_slots = 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;
+
+ 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;
+ 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;
+ 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;
+ 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 (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_buffer *vb;
+ 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;
+
+ vb = &list_entry(priv->capture.next, struct rcar_vin_buffer, list)->vb;
+ list_del_init(to_buf_list(vb));
+ priv->queue_buf[slot] = vb;
+ phys_addr_top = vb2_dma_contig_plane_dma_addr(vb, 0);
+ iowrite32(phys_addr_top, priv->base + VNMB_REG(slot));
+
+ return 1;
+}
+
+static void rcar_vin_videobuf_queue(struct vb2_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->v4l2_buf.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(vb), &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(vb));
+ 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_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_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]->v4l2_buf.field = priv->field;
+ priv->queue_buf[slot]->v4l2_buf.sequence = priv->sequence++;
+ do_gettimeofday(&priv->queue_buf[slot]->v4l2_buf.timestamp);
+ vb2_buffer_done(priv->queue_buf[slot], 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_buffer *vb;
+ 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++) {
+ vb = priv->queue_buf[i];
+ if (vb) {
+ list_del_init(to_buf_list(vb));
+ vb2_buffer_done(vb, 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;
+ u32 code;
+ const struct soc_mbus_pixelfmt *fmt;
+
+ ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code);
+ if (ret < 0)
+ return 0;
+
+ fmt = soc_mbus_get_fmtdesc(code);
+ if (!fmt) {
+ dev_warn(dev, "unsupported format code #%u: %d\n", idx, 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_mbus_framefmt mf;
+ struct v4l2_rect rect;
+ struct device *dev = icd->parent;
+ int shift;
+
+ ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf);
+ 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),
+ video, s_mbus_fmt,
+ &mf);
+ 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) {
+ case MEDIA_BUS_FMT_YUYV8_1X16:
+ case MEDIA_BUS_FMT_YUYV8_2X8:
+ case MEDIA_BUS_FMT_YUYV10_2X10:
+ 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;
+ dev_dbg(dev, "Providing format %s using code %d\n",
+ rcar_vin_formats[k].name, 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;
+ 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_mbus_framefmt mf;
+ 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, video, g_mbus_fmt, &mf);
+ 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 < 0)
+ std = V4L2_STD_625_50;
+
+ 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_mbus_framefmt mf;
+ __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),
+ video, try_mbus_fmt, &mf);
+ 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),
+ video, try_mbus_fmt,
+ &mf);
+ 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;
+
+ 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 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 struct platform_device_id rcar_vin_id_table[] = {
+ { "r8a7791-vin", RCAR_GEN2 },
+ { "r8a7790-vin", RCAR_GEN2 },
+ { "r8a7779-vin", RCAR_H1 },
+ { "r8a7778-vin", RCAR_M1 },
+ { "uPD35004-vin", RCAR_E1 },
+ {},
+};
+MODULE_DEVICE_TABLE(platform, rcar_vin_id_table);
+
+static int rcar_vin_probe(struct platform_device *pdev)
+{
+ const struct of_device_id *match = NULL;
+ struct rcar_vin_priv *priv;
+ struct resource *mem;
+ struct rcar_vin_platform_data *pdata;
+ unsigned int pdata_flags;
+ int irq, ret;
+
+ if (pdev->dev.of_node) {
+ struct v4l2_of_endpoint ep;
+ struct device_node *np;
+
+ 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);
+ } else {
+ pdata = pdev->dev.platform_data;
+ if (!pdata || !pdata->flags) {
+ dev_err(&pdev->dev, "platform data not set\n");
+ return -EINVAL;
+ }
+ pdata_flags = 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),
+ },
+ .id_table = rcar_vin_id_table,
+};
+
+module_platform_driver(rcar_vin_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:rcar_vin");
+MODULE_DESCRIPTION("Renesas R-Car VIN camera host driver");
Code Review / kvmfornfv.git / blobdiff