--- /dev/null
+/*
+ * Driver for Renesas R-Car VIN
+ *
+ * Copyright (C) 2016 Renesas Electronics Corp.
+ * Copyright (C) 2011-2013 Renesas Solutions Corp.
+ * Copyright (C) 2013 Cogent Embedded, Inc., <source@cogentembedded.com>
+ * Copyright (C) 2008 Magnus Damm
+ *
+ * Based on the soc-camera rcar_vin driver
+ *
+ * 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 <media/videobuf2-dma-contig.h>
+
+#include "rcar-vin.h"
+
+/* -----------------------------------------------------------------------------
+ * HW Functions
+ */
+
+/* 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)
+
+static void rvin_write(struct rvin_dev *vin, u32 value, u32 offset)
+{
+ iowrite32(value, vin->base + offset);
+}
+
+static u32 rvin_read(struct rvin_dev *vin, u32 offset)
+{
+ return ioread32(vin->base + offset);
+}
+
+static int rvin_setup(struct rvin_dev *vin)
+{
+ u32 vnmc, dmr, dmr2, interrupts;
+ bool progressive = false, output_is_yuv = false, input_is_yuv = false;
+
+ switch (vin->format.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 (vin->continuous) {
+ vnmc = VNMC_IM_ODD_EVEN;
+ progressive = true;
+ } else {
+ vnmc = VNMC_IM_ODD;
+ }
+ break;
+ default:
+ vnmc = VNMC_IM_ODD;
+ break;
+ }
+
+ /*
+ * Input interface
+ */
+ switch (vin->source.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 |= vin->mbus_cfg.type == V4L2_MBUS_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 |= vin->mbus_cfg.type == V4L2_MBUS_BT656 ?
+ VNMC_INF_YUV10_BT656 : VNMC_INF_YUV10_BT601;
+ input_is_yuv = true;
+ break;
+ default:
+ break;
+ }
+
+ /* Enable VSYNC Field Toogle mode after one VSYNC input */
+ dmr2 = VNDMR2_FTEV | VNDMR2_VLV(1);
+
+ /* Hsync Signal Polarity Select */
+ if (!(vin->mbus_cfg.flags & V4L2_MBUS_HSYNC_ACTIVE_LOW))
+ dmr2 |= VNDMR2_HPS;
+
+ /* Vsync Signal Polarity Select */
+ if (!(vin->mbus_cfg.flags & V4L2_MBUS_VSYNC_ACTIVE_LOW))
+ dmr2 |= VNDMR2_VPS;
+
+ /*
+ * Output format
+ */
+ switch (vin->format.pixelformat) {
+ case V4L2_PIX_FMT_NV16:
+ rvin_write(vin,
+ ALIGN(vin->format.width * vin->format.height, 0x80),
+ 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_XRGB555:
+ dmr = VNDMR_DTMD_ARGB1555;
+ break;
+ case V4L2_PIX_FMT_RGB565:
+ dmr = 0;
+ break;
+ case V4L2_PIX_FMT_XBGR32:
+ if (vin->chip == RCAR_GEN2 || vin->chip == RCAR_H1) {
+ dmr = VNDMR_EXRGB;
+ break;
+ }
+ /* fall through */
+ default:
+ vin_err(vin, "Invalid pixelformat (0x%x)\n",
+ vin->format.pixelformat);
+ 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 */
+ rvin_write(vin, interrupts, VNINTS_REG);
+ /* Enable interrupts */
+ rvin_write(vin, interrupts, VNIE_REG);
+ /* Start capturing */
+ rvin_write(vin, dmr, VNDMR_REG);
+ rvin_write(vin, dmr2, VNDMR2_REG);
+
+ /* Enable module */
+ rvin_write(vin, vnmc | VNMC_ME, VNMC_REG);
+
+ return 0;
+}
+
+static void rvin_capture_on(struct rvin_dev *vin)
+{
+ vin_dbg(vin, "Capture on in %s mode\n",
+ vin->continuous ? "continuous" : "single");
+
+ if (vin->continuous)
+ /* Continuous Frame Capture Mode */
+ rvin_write(vin, VNFC_C_FRAME, VNFC_REG);
+ else
+ /* Single Frame Capture Mode */
+ rvin_write(vin, VNFC_S_FRAME, VNFC_REG);
+}
+
+static void rvin_capture_off(struct rvin_dev *vin)
+{
+ /* Set continuous & single transfer off */
+ rvin_write(vin, 0, VNFC_REG);
+}
+
+static int rvin_capture_start(struct rvin_dev *vin)
+{
+ int ret;
+
+ rvin_crop_scale_comp(vin);
+
+ ret = rvin_setup(vin);
+ if (ret)
+ return ret;
+
+ rvin_capture_on(vin);
+
+ return 0;
+}
+
+static void rvin_capture_stop(struct rvin_dev *vin)
+{
+ rvin_capture_off(vin);
+
+ /* Disable module */
+ rvin_write(vin, rvin_read(vin, VNMC_REG) & ~VNMC_ME, VNMC_REG);
+}
+
+static void rvin_disable_interrupts(struct rvin_dev *vin)
+{
+ rvin_write(vin, 0, VNIE_REG);
+}
+
+static u32 rvin_get_interrupt_status(struct rvin_dev *vin)
+{
+ return rvin_read(vin, VNINTS_REG);
+}
+
+static void rvin_ack_interrupt(struct rvin_dev *vin)
+{
+ rvin_write(vin, rvin_read(vin, VNINTS_REG), VNINTS_REG);
+}
+
+static bool rvin_capture_active(struct rvin_dev *vin)
+{
+ return rvin_read(vin, VNMS_REG) & VNMS_CA;
+}
+
+static int rvin_get_active_slot(struct rvin_dev *vin)
+{
+ if (vin->continuous)
+ return (rvin_read(vin, VNMS_REG) & VNMS_FBS_MASK)
+ >> VNMS_FBS_SHIFT;
+
+ return 0;
+}
+
+static void rvin_set_slot_addr(struct rvin_dev *vin, int slot, dma_addr_t addr)
+{
+ const struct rvin_video_format *fmt;
+ int offsetx, offsety;
+ dma_addr_t offset;
+
+ fmt = rvin_format_from_pixel(vin->format.pixelformat);
+
+ /*
+ * There is no HW support for composition do the beast we can
+ * by modifying the buffer offset
+ */
+ offsetx = vin->compose.left * fmt->bpp;
+ offsety = vin->compose.top * vin->format.bytesperline;
+ offset = addr + offsetx + offsety;
+
+ /*
+ * The address needs to be 128 bytes aligned. Driver should never accept
+ * settings that do not satisfy this in the first place...
+ */
+ if (WARN_ON((offsetx | offsety | offset) & HW_BUFFER_MASK))
+ return;
+
+ rvin_write(vin, offset, VNMB_REG(slot));
+}
+
+/* -----------------------------------------------------------------------------
+ * Crop and Scaling Gen2
+ */
+
+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 },
+ }
+};
+
+static void rvin_set_coeff(struct rvin_dev *vin, 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 */
+ rvin_write(vin, p_set->coeff_set[0], VNC1A_REG);
+ rvin_write(vin, p_set->coeff_set[1], VNC1B_REG);
+ rvin_write(vin, p_set->coeff_set[2], VNC1C_REG);
+
+ rvin_write(vin, p_set->coeff_set[3], VNC2A_REG);
+ rvin_write(vin, p_set->coeff_set[4], VNC2B_REG);
+ rvin_write(vin, p_set->coeff_set[5], VNC2C_REG);
+
+ rvin_write(vin, p_set->coeff_set[6], VNC3A_REG);
+ rvin_write(vin, p_set->coeff_set[7], VNC3B_REG);
+ rvin_write(vin, p_set->coeff_set[8], VNC3C_REG);
+
+ rvin_write(vin, p_set->coeff_set[9], VNC4A_REG);
+ rvin_write(vin, p_set->coeff_set[10], VNC4B_REG);
+ rvin_write(vin, p_set->coeff_set[11], VNC4C_REG);
+
+ rvin_write(vin, p_set->coeff_set[12], VNC5A_REG);
+ rvin_write(vin, p_set->coeff_set[13], VNC5B_REG);
+ rvin_write(vin, p_set->coeff_set[14], VNC5C_REG);
+
+ rvin_write(vin, p_set->coeff_set[15], VNC6A_REG);
+ rvin_write(vin, p_set->coeff_set[16], VNC6B_REG);
+ rvin_write(vin, p_set->coeff_set[17], VNC6C_REG);
+
+ rvin_write(vin, p_set->coeff_set[18], VNC7A_REG);
+ rvin_write(vin, p_set->coeff_set[19], VNC7B_REG);
+ rvin_write(vin, p_set->coeff_set[20], VNC7C_REG);
+
+ rvin_write(vin, p_set->coeff_set[21], VNC8A_REG);
+ rvin_write(vin, p_set->coeff_set[22], VNC8B_REG);
+ rvin_write(vin, p_set->coeff_set[23], VNC8C_REG);
+}
+
+void rvin_crop_scale_comp(struct rvin_dev *vin)
+{
+ u32 xs, ys;
+
+ /* Set Start/End Pixel/Line Pre-Clip */
+ rvin_write(vin, vin->crop.left, VNSPPRC_REG);
+ rvin_write(vin, vin->crop.left + vin->crop.width - 1, VNEPPRC_REG);
+ switch (vin->format.field) {
+ case V4L2_FIELD_INTERLACED:
+ case V4L2_FIELD_INTERLACED_TB:
+ case V4L2_FIELD_INTERLACED_BT:
+ rvin_write(vin, vin->crop.top / 2, VNSLPRC_REG);
+ rvin_write(vin, (vin->crop.top + vin->crop.height) / 2 - 1,
+ VNELPRC_REG);
+ break;
+ default:
+ rvin_write(vin, vin->crop.top, VNSLPRC_REG);
+ rvin_write(vin, vin->crop.top + vin->crop.height - 1,
+ VNELPRC_REG);
+ break;
+ }
+
+ /* Set scaling coefficient */
+ ys = 0;
+ if (vin->crop.height != vin->compose.height)
+ ys = (4096 * vin->crop.height) / vin->compose.height;
+ rvin_write(vin, ys, VNYS_REG);
+
+ xs = 0;
+ if (vin->crop.width != vin->compose.width)
+ xs = (4096 * vin->crop.width) / vin->compose.width;
+
+ /* Horizontal upscaling is up to double size */
+ if (xs > 0 && xs < 2048)
+ xs = 2048;
+
+ rvin_write(vin, xs, VNXS_REG);
+
+ /* Horizontal upscaling is done out by scaling down from double size */
+ if (xs < 4096)
+ xs *= 2;
+
+ rvin_set_coeff(vin, xs);
+
+ /* Set Start/End Pixel/Line Post-Clip */
+ rvin_write(vin, 0, VNSPPOC_REG);
+ rvin_write(vin, 0, VNSLPOC_REG);
+ rvin_write(vin, vin->format.width - 1, VNEPPOC_REG);
+ switch (vin->format.field) {
+ case V4L2_FIELD_INTERLACED:
+ case V4L2_FIELD_INTERLACED_TB:
+ case V4L2_FIELD_INTERLACED_BT:
+ rvin_write(vin, vin->format.height / 2 - 1, VNELPOC_REG);
+ break;
+ default:
+ rvin_write(vin, vin->format.height - 1, VNELPOC_REG);
+ break;
+ }
+
+ if (vin->format.pixelformat == V4L2_PIX_FMT_NV16)
+ rvin_write(vin, ALIGN(vin->format.width, 0x20), VNIS_REG);
+ else
+ rvin_write(vin, ALIGN(vin->format.width, 0x10), VNIS_REG);
+
+ vin_dbg(vin,
+ "Pre-Clip: %ux%u@%u:%u YS: %d XS: %d Post-Clip: %ux%u@%u:%u\n",
+ vin->crop.width, vin->crop.height, vin->crop.left,
+ vin->crop.top, ys, xs, vin->format.width, vin->format.height,
+ 0, 0);
+}
+
+void rvin_scale_try(struct rvin_dev *vin, struct v4l2_pix_format *pix,
+ u32 width, u32 height)
+{
+ /* All VIN channels on Gen2 have scalers */
+ pix->width = width;
+ pix->height = height;
+}
+
+/* -----------------------------------------------------------------------------
+ * DMA Functions
+ */
+
+#define RVIN_TIMEOUT_MS 100
+#define RVIN_RETRIES 10
+
+struct rvin_buffer {
+ struct vb2_v4l2_buffer vb;
+ struct list_head list;
+};
+
+#define to_buf_list(vb2_buffer) (&container_of(vb2_buffer, \
+ struct rvin_buffer, \
+ vb)->list)
+
+/* Moves a buffer from the queue to the HW slots */
+static bool rvin_fill_hw_slot(struct rvin_dev *vin, int slot)
+{
+ struct rvin_buffer *buf;
+ struct vb2_v4l2_buffer *vbuf;
+ dma_addr_t phys_addr_top;
+
+ if (vin->queue_buf[slot] != NULL)
+ return true;
+
+ if (list_empty(&vin->buf_list))
+ return false;
+
+ vin_dbg(vin, "Filling HW slot: %d\n", slot);
+
+ /* Keep track of buffer we give to HW */
+ buf = list_entry(vin->buf_list.next, struct rvin_buffer, list);
+ vbuf = &buf->vb;
+ list_del_init(to_buf_list(vbuf));
+ vin->queue_buf[slot] = vbuf;
+
+ /* Setup DMA */
+ phys_addr_top = vb2_dma_contig_plane_dma_addr(&vbuf->vb2_buf, 0);
+ rvin_set_slot_addr(vin, slot, phys_addr_top);
+
+ return true;
+}
+
+static bool rvin_fill_hw(struct rvin_dev *vin)
+{
+ int slot, limit;
+
+ limit = vin->continuous ? HW_BUFFER_NUM : 1;
+
+ for (slot = 0; slot < limit; slot++)
+ if (!rvin_fill_hw_slot(vin, slot))
+ return false;
+ return true;
+}
+
+static irqreturn_t rvin_irq(int irq, void *data)
+{
+ struct rvin_dev *vin = data;
+ u32 int_status;
+ int slot;
+ unsigned int sequence, handled = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&vin->qlock, flags);
+
+ int_status = rvin_get_interrupt_status(vin);
+ if (!int_status)
+ goto done;
+
+ rvin_ack_interrupt(vin);
+ handled = 1;
+
+ /* Nothing to do if capture status is 'STOPPED' */
+ if (vin->state == STOPPED) {
+ vin_dbg(vin, "IRQ while state stopped\n");
+ goto done;
+ }
+
+ /* Nothing to do if capture status is 'STOPPING' */
+ if (vin->state == STOPPING) {
+ vin_dbg(vin, "IRQ while state stopping\n");
+ goto done;
+ }
+
+ /* Prepare for capture and update state */
+ slot = rvin_get_active_slot(vin);
+ sequence = vin->sequence++;
+
+ vin_dbg(vin, "IRQ %02d: %d\tbuf0: %c buf1: %c buf2: %c\tmore: %d\n",
+ sequence, slot,
+ slot == 0 ? 'x' : vin->queue_buf[0] != NULL ? '1' : '0',
+ slot == 1 ? 'x' : vin->queue_buf[1] != NULL ? '1' : '0',
+ slot == 2 ? 'x' : vin->queue_buf[2] != NULL ? '1' : '0',
+ !list_empty(&vin->buf_list));
+
+ /* HW have written to a slot that is not prepared we are in trouble */
+ if (WARN_ON((vin->queue_buf[slot] == NULL)))
+ goto done;
+
+ /* Capture frame */
+ vin->queue_buf[slot]->field = vin->format.field;
+ vin->queue_buf[slot]->sequence = sequence;
+ vin->queue_buf[slot]->vb2_buf.timestamp = ktime_get_ns();
+ vb2_buffer_done(&vin->queue_buf[slot]->vb2_buf, VB2_BUF_STATE_DONE);
+ vin->queue_buf[slot] = NULL;
+
+ /* Prepare for next frame */
+ if (!rvin_fill_hw(vin)) {
+
+ /*
+ * Can't supply HW with new buffers fast enough. Halt
+ * capture until more buffers are available.
+ */
+ vin->state = STALLED;
+
+ /*
+ * The continuous capturing requires an explicit stop
+ * operation when there is no buffer to be set into
+ * the VnMBm registers.
+ */
+ if (vin->continuous) {
+ rvin_capture_off(vin);
+ vin_dbg(vin, "IRQ %02d: hw not ready stop\n", sequence);
+ }
+ } else {
+ /*
+ * The single capturing requires an explicit capture
+ * operation to fetch the next frame.
+ */
+ if (!vin->continuous)
+ rvin_capture_on(vin);
+ }
+done:
+ spin_unlock_irqrestore(&vin->qlock, flags);
+
+ return IRQ_RETVAL(handled);
+}
+
+/* Need to hold qlock before calling */
+static void return_all_buffers(struct rvin_dev *vin,
+ enum vb2_buffer_state state)
+{
+ struct rvin_buffer *buf, *node;
+ int i;
+
+ for (i = 0; i < HW_BUFFER_NUM; i++) {
+ if (vin->queue_buf[i]) {
+ vb2_buffer_done(&vin->queue_buf[i]->vb2_buf,
+ state);
+ vin->queue_buf[i] = NULL;
+ }
+ }
+
+ list_for_each_entry_safe(buf, node, &vin->buf_list, list) {
+ vb2_buffer_done(&buf->vb.vb2_buf, state);
+ list_del(&buf->list);
+ }
+}
+
+static int rvin_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
+ unsigned int *nplanes, unsigned int sizes[],
+ void *alloc_ctxs[])
+
+{
+ struct rvin_dev *vin = vb2_get_drv_priv(vq);
+
+ alloc_ctxs[0] = vin->alloc_ctx;
+ /* Make sure the image size is large enough. */
+ if (*nplanes)
+ return sizes[0] < vin->format.sizeimage ? -EINVAL : 0;
+
+ *nplanes = 1;
+ sizes[0] = vin->format.sizeimage;
+
+ return 0;
+};
+
+static int rvin_buffer_prepare(struct vb2_buffer *vb)
+{
+ struct rvin_dev *vin = vb2_get_drv_priv(vb->vb2_queue);
+ unsigned long size = vin->format.sizeimage;
+
+ if (vb2_plane_size(vb, 0) < size) {
+ vin_err(vin, "buffer too small (%lu < %lu)\n",
+ vb2_plane_size(vb, 0), size);
+ return -EINVAL;
+ }
+
+ vb2_set_plane_payload(vb, 0, size);
+
+ return 0;
+}
+
+static void rvin_buffer_queue(struct vb2_buffer *vb)
+{
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct rvin_dev *vin = vb2_get_drv_priv(vb->vb2_queue);
+ unsigned long flags;
+
+ spin_lock_irqsave(&vin->qlock, flags);
+
+ list_add_tail(to_buf_list(vbuf), &vin->buf_list);
+
+ /*
+ * If capture is stalled add buffer to HW and restart
+ * capturing if HW is ready to continue.
+ */
+ if (vin->state == STALLED)
+ if (rvin_fill_hw(vin))
+ rvin_capture_on(vin);
+
+ spin_unlock_irqrestore(&vin->qlock, flags);
+}
+
+static int rvin_start_streaming(struct vb2_queue *vq, unsigned int count)
+{
+ struct rvin_dev *vin = vb2_get_drv_priv(vq);
+ struct v4l2_subdev *sd;
+ unsigned long flags;
+ int ret;
+
+ sd = vin_to_source(vin);
+ v4l2_subdev_call(sd, video, s_stream, 1);
+
+ spin_lock_irqsave(&vin->qlock, flags);
+
+ vin->state = RUNNING;
+ vin->sequence = 0;
+
+ /* Continuous capture requires more buffers then there are HW slots */
+ vin->continuous = count > HW_BUFFER_NUM;
+
+ /*
+ * This should never happen but if we don't have enough
+ * buffers for HW bail out
+ */
+ if (!rvin_fill_hw(vin)) {
+ vin_err(vin, "HW not ready to start, not enough buffers available\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ret = rvin_capture_start(vin);
+out:
+ /* Return all buffers if something went wrong */
+ if (ret) {
+ return_all_buffers(vin, VB2_BUF_STATE_QUEUED);
+ v4l2_subdev_call(sd, video, s_stream, 0);
+ }
+
+ spin_unlock_irqrestore(&vin->qlock, flags);
+
+ return ret;
+}
+
+static void rvin_stop_streaming(struct vb2_queue *vq)
+{
+ struct rvin_dev *vin = vb2_get_drv_priv(vq);
+ struct v4l2_subdev *sd;
+ unsigned long flags;
+ int retries = 0;
+
+ spin_lock_irqsave(&vin->qlock, flags);
+
+ vin->state = STOPPING;
+
+ /* Wait for streaming to stop */
+ while (retries++ < RVIN_RETRIES) {
+
+ rvin_capture_stop(vin);
+
+ /* Check if HW is stopped */
+ if (!rvin_capture_active(vin)) {
+ vin->state = STOPPED;
+ break;
+ }
+
+ spin_unlock_irqrestore(&vin->qlock, flags);
+ msleep(RVIN_TIMEOUT_MS);
+ spin_lock_irqsave(&vin->qlock, flags);
+ }
+
+ if (vin->state != STOPPED) {
+ /*
+ * If this happens something have gone horribly wrong.
+ * Set state to stopped to prevent the interrupt handler
+ * to make things worse...
+ */
+ vin_err(vin, "Failed stop HW, something is seriously broken\n");
+ vin->state = STOPPED;
+ }
+
+ /* Release all active buffers */
+ return_all_buffers(vin, VB2_BUF_STATE_ERROR);
+
+ spin_unlock_irqrestore(&vin->qlock, flags);
+
+ sd = vin_to_source(vin);
+ v4l2_subdev_call(sd, video, s_stream, 0);
+
+ /* disable interrupts */
+ rvin_disable_interrupts(vin);
+}
+
+static struct vb2_ops rvin_qops = {
+ .queue_setup = rvin_queue_setup,
+ .buf_prepare = rvin_buffer_prepare,
+ .buf_queue = rvin_buffer_queue,
+ .start_streaming = rvin_start_streaming,
+ .stop_streaming = rvin_stop_streaming,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+};
+
+void rvin_dma_remove(struct rvin_dev *vin)
+{
+ if (!IS_ERR_OR_NULL(vin->alloc_ctx))
+ vb2_dma_contig_cleanup_ctx(vin->alloc_ctx);
+
+ mutex_destroy(&vin->lock);
+
+ v4l2_device_unregister(&vin->v4l2_dev);
+}
+
+int rvin_dma_probe(struct rvin_dev *vin, int irq)
+{
+ struct vb2_queue *q = &vin->queue;
+ int i, ret;
+
+ /* Initialize the top-level structure */
+ ret = v4l2_device_register(vin->dev, &vin->v4l2_dev);
+ if (ret)
+ return ret;
+
+ mutex_init(&vin->lock);
+ INIT_LIST_HEAD(&vin->buf_list);
+
+ spin_lock_init(&vin->qlock);
+
+ vin->state = STOPPED;
+
+ for (i = 0; i < HW_BUFFER_NUM; i++)
+ vin->queue_buf[i] = NULL;
+
+ /* buffer queue */
+ vin->alloc_ctx = vb2_dma_contig_init_ctx(vin->dev);
+ if (IS_ERR(vin->alloc_ctx)) {
+ ret = PTR_ERR(vin->alloc_ctx);
+ goto error;
+ }
+
+ q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ q->io_modes = VB2_MMAP | VB2_READ | VB2_DMABUF;
+ q->lock = &vin->lock;
+ q->drv_priv = vin;
+ q->buf_struct_size = sizeof(struct rvin_buffer);
+ q->ops = &rvin_qops;
+ q->mem_ops = &vb2_dma_contig_memops;
+ q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+ q->min_buffers_needed = 2;
+
+ ret = vb2_queue_init(q);
+ if (ret < 0) {
+ vin_err(vin, "failed to initialize VB2 queue\n");
+ goto error;
+ }
+
+ /* irq */
+ ret = devm_request_irq(vin->dev, irq, rvin_irq, IRQF_SHARED,
+ KBUILD_MODNAME, vin);
+ if (ret) {
+ vin_err(vin, "failed to request irq\n");
+ goto error;
+ }
+
+ return 0;
+error:
+ rvin_dma_remove(vin);
+
+ return ret;
+}
--- /dev/null
+/*
+ * Driver for Renesas R-Car VIN
+ *
+ * Copyright (C) 2016 Renesas Electronics Corp.
+ * Copyright (C) 2011-2013 Renesas Solutions Corp.
+ * Copyright (C) 2013 Cogent Embedded, Inc., <source@cogentembedded.com>
+ * Copyright (C) 2008 Magnus Damm
+ *
+ * Based on the soc-camera rcar_vin driver
+ *
+ * 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/pm_runtime.h>
+
+#include <media/v4l2-event.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-rect.h>
+
+#include "rcar-vin.h"
+
+#define RVIN_DEFAULT_FORMAT V4L2_PIX_FMT_YUYV
+#define RVIN_MAX_WIDTH 2048
+#define RVIN_MAX_HEIGHT 2048
+
+/* -----------------------------------------------------------------------------
+ * Format Conversions
+ */
+
+static const struct rvin_video_format rvin_formats[] = {
+ {
+ .fourcc = V4L2_PIX_FMT_NV16,
+ .bpp = 1,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_YUYV,
+ .bpp = 2,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_UYVY,
+ .bpp = 2,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_RGB565,
+ .bpp = 2,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_XRGB555,
+ .bpp = 2,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_XBGR32,
+ .bpp = 4,
+ },
+};
+
+const struct rvin_video_format *rvin_format_from_pixel(u32 pixelformat)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(rvin_formats); i++)
+ if (rvin_formats[i].fourcc == pixelformat)
+ return rvin_formats + i;
+
+ return NULL;
+}
+
+static u32 rvin_format_bytesperline(struct v4l2_pix_format *pix)
+{
+ const struct rvin_video_format *fmt;
+
+ fmt = rvin_format_from_pixel(pix->pixelformat);
+
+ if (WARN_ON(!fmt))
+ return -EINVAL;
+
+ return pix->width * fmt->bpp;
+}
+
+static u32 rvin_format_sizeimage(struct v4l2_pix_format *pix)
+{
+ if (pix->pixelformat == V4L2_PIX_FMT_NV16)
+ return pix->bytesperline * pix->height * 2;
+
+ return pix->bytesperline * pix->height;
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2
+ */
+
+static int __rvin_try_format_source(struct rvin_dev *vin,
+ u32 which,
+ struct v4l2_pix_format *pix,
+ struct rvin_source_fmt *source)
+{
+ struct v4l2_subdev *sd;
+ struct v4l2_subdev_pad_config pad_cfg;
+ struct v4l2_subdev_format format = {
+ .which = which,
+ };
+ int ret;
+
+ sd = vin_to_source(vin);
+
+ v4l2_fill_mbus_format(&format.format, pix, vin->source.code);
+
+ ret = v4l2_device_call_until_err(sd->v4l2_dev, 0, pad, set_fmt,
+ &pad_cfg, &format);
+ if (ret < 0)
+ return ret;
+
+ v4l2_fill_pix_format(pix, &format.format);
+
+ source->width = pix->width;
+ source->height = pix->height;
+
+ vin_dbg(vin, "Source resolution: %ux%u\n", source->width,
+ source->height);
+
+ return 0;
+}
+
+static int __rvin_try_format(struct rvin_dev *vin,
+ u32 which,
+ struct v4l2_pix_format *pix,
+ struct rvin_source_fmt *source)
+{
+ const struct rvin_video_format *info;
+ u32 rwidth, rheight, walign;
+
+ /* Requested */
+ rwidth = pix->width;
+ rheight = pix->height;
+
+ /*
+ * Retrieve format information and select the current format if the
+ * requested format isn't supported.
+ */
+ info = rvin_format_from_pixel(pix->pixelformat);
+ if (!info) {
+ vin_dbg(vin, "Format %x not found, keeping %x\n",
+ pix->pixelformat, vin->format.pixelformat);
+ *pix = vin->format;
+ pix->width = rwidth;
+ pix->height = rheight;
+ }
+
+ /* Always recalculate */
+ pix->bytesperline = 0;
+ pix->sizeimage = 0;
+
+ /* Limit to source capabilities */
+ __rvin_try_format_source(vin, which, pix, source);
+
+ /* If source can't match format try if VIN can scale */
+ if (source->width != rwidth || source->height != rheight)
+ rvin_scale_try(vin, pix, rwidth, rheight);
+
+ /* HW limit width to a multiple of 32 (2^5) for NV16 else 2 (2^1) */
+ walign = vin->format.pixelformat == V4L2_PIX_FMT_NV16 ? 5 : 1;
+
+ /* Limit to VIN capabilities */
+ v4l_bound_align_image(&pix->width, 2, RVIN_MAX_WIDTH, walign,
+ &pix->height, 4, RVIN_MAX_HEIGHT, 2, 0);
+
+ switch (pix->field) {
+ case V4L2_FIELD_NONE:
+ case V4L2_FIELD_TOP:
+ case V4L2_FIELD_BOTTOM:
+ case V4L2_FIELD_INTERLACED_TB:
+ case V4L2_FIELD_INTERLACED_BT:
+ case V4L2_FIELD_INTERLACED:
+ break;
+ default:
+ pix->field = V4L2_FIELD_NONE;
+ break;
+ }
+
+ pix->bytesperline = max_t(u32, pix->bytesperline,
+ rvin_format_bytesperline(pix));
+ pix->sizeimage = max_t(u32, pix->sizeimage,
+ rvin_format_sizeimage(pix));
+
+ vin_dbg(vin, "Requested %ux%u Got %ux%u bpl: %d size: %d\n",
+ rwidth, rheight, pix->width, pix->height,
+ pix->bytesperline, pix->sizeimage);
+
+ return 0;
+}
+
+static int rvin_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct rvin_dev *vin = video_drvdata(file);
+
+ strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
+ strlcpy(cap->card, "R_Car_VIN", sizeof(cap->card));
+ snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
+ dev_name(vin->dev));
+ return 0;
+}
+
+static int rvin_try_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct rvin_dev *vin = video_drvdata(file);
+ struct rvin_source_fmt source;
+
+ return __rvin_try_format(vin, V4L2_SUBDEV_FORMAT_TRY, &f->fmt.pix,
+ &source);
+}
+
+static int rvin_s_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct rvin_dev *vin = video_drvdata(file);
+ struct rvin_source_fmt source;
+ int ret;
+
+ if (vb2_is_busy(&vin->queue))
+ return -EBUSY;
+
+ ret = __rvin_try_format(vin, V4L2_SUBDEV_FORMAT_ACTIVE, &f->fmt.pix,
+ &source);
+ if (ret)
+ return ret;
+
+ vin->source.width = source.width;
+ vin->source.height = source.height;
+
+ vin->format = f->fmt.pix;
+
+ return 0;
+}
+
+static int rvin_g_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct rvin_dev *vin = video_drvdata(file);
+
+ f->fmt.pix = vin->format;
+
+ return 0;
+}
+
+static int rvin_enum_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ if (f->index >= ARRAY_SIZE(rvin_formats))
+ return -EINVAL;
+
+ f->pixelformat = rvin_formats[f->index].fourcc;
+
+ return 0;
+}
+
+static int rvin_g_selection(struct file *file, void *fh,
+ struct v4l2_selection *s)
+{
+ struct rvin_dev *vin = video_drvdata(file);
+
+ if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ switch (s->target) {
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ s->r.left = s->r.top = 0;
+ s->r.width = vin->source.width;
+ s->r.height = vin->source.height;
+ break;
+ case V4L2_SEL_TGT_CROP:
+ s->r = vin->crop;
+ break;
+ case V4L2_SEL_TGT_COMPOSE_BOUNDS:
+ case V4L2_SEL_TGT_COMPOSE_DEFAULT:
+ s->r.left = s->r.top = 0;
+ s->r.width = vin->format.width;
+ s->r.height = vin->format.height;
+ break;
+ case V4L2_SEL_TGT_COMPOSE:
+ s->r = vin->compose;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int rvin_s_selection(struct file *file, void *fh,
+ struct v4l2_selection *s)
+{
+ struct rvin_dev *vin = video_drvdata(file);
+ const struct rvin_video_format *fmt;
+ struct v4l2_rect r = s->r;
+ struct v4l2_rect max_rect;
+ struct v4l2_rect min_rect = {
+ .width = 6,
+ .height = 2,
+ };
+
+ if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ v4l2_rect_set_min_size(&r, &min_rect);
+
+ switch (s->target) {
+ case V4L2_SEL_TGT_CROP:
+ /* Can't crop outside of source input */
+ max_rect.top = max_rect.left = 0;
+ max_rect.width = vin->source.width;
+ max_rect.height = vin->source.height;
+ v4l2_rect_map_inside(&r, &max_rect);
+
+ v4l_bound_align_image(&r.width, 2, vin->source.width, 1,
+ &r.height, 4, vin->source.height, 2, 0);
+
+ r.top = clamp_t(s32, r.top, 0, vin->source.height - r.height);
+ r.left = clamp_t(s32, r.left, 0, vin->source.width - r.width);
+
+ vin->crop = s->r = r;
+
+ vin_dbg(vin, "Cropped %dx%d@%d:%d of %dx%d\n",
+ r.width, r.height, r.left, r.top,
+ vin->source.width, vin->source.height);
+ break;
+ case V4L2_SEL_TGT_COMPOSE:
+ /* Make sure compose rect fits inside output format */
+ max_rect.top = max_rect.left = 0;
+ max_rect.width = vin->format.width;
+ max_rect.height = vin->format.height;
+ v4l2_rect_map_inside(&r, &max_rect);
+
+ /*
+ * Composing is done by adding a offset to the buffer address,
+ * the HW wants this address to be aligned to HW_BUFFER_MASK.
+ * Make sure the top and left values meets this requirement.
+ */
+ while ((r.top * vin->format.bytesperline) & HW_BUFFER_MASK)
+ r.top--;
+
+ fmt = rvin_format_from_pixel(vin->format.pixelformat);
+ while ((r.left * fmt->bpp) & HW_BUFFER_MASK)
+ r.left--;
+
+ vin->compose = s->r = r;
+
+ vin_dbg(vin, "Compose %dx%d@%d:%d in %dx%d\n",
+ r.width, r.height, r.left, r.top,
+ vin->format.width, vin->format.height);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* HW supports modifying configuration while running */
+ rvin_crop_scale_comp(vin);
+
+ return 0;
+}
+
+static int rvin_cropcap(struct file *file, void *priv,
+ struct v4l2_cropcap *crop)
+{
+ struct rvin_dev *vin = video_drvdata(file);
+ struct v4l2_subdev *sd = vin_to_source(vin);
+
+ if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ return v4l2_subdev_call(sd, video, cropcap, crop);
+}
+
+static int rvin_enum_input(struct file *file, void *priv,
+ struct v4l2_input *i)
+{
+ struct rvin_dev *vin = video_drvdata(file);
+ struct v4l2_subdev *sd = vin_to_source(vin);
+ int ret;
+
+ if (i->index != 0)
+ return -EINVAL;
+
+ ret = v4l2_subdev_call(sd, video, g_input_status, &i->status);
+ if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
+ return ret;
+
+ i->type = V4L2_INPUT_TYPE_CAMERA;
+ i->std = vin->vdev.tvnorms;
+ strlcpy(i->name, "Camera", sizeof(i->name));
+
+ return 0;
+}
+
+static int rvin_g_input(struct file *file, void *priv, unsigned int *i)
+{
+ *i = 0;
+ return 0;
+}
+
+static int rvin_s_input(struct file *file, void *priv, unsigned int i)
+{
+ if (i > 0)
+ return -EINVAL;
+ return 0;
+}
+
+static int rvin_querystd(struct file *file, void *priv, v4l2_std_id *a)
+{
+ struct rvin_dev *vin = video_drvdata(file);
+ struct v4l2_subdev *sd = vin_to_source(vin);
+
+ return v4l2_subdev_call(sd, video, querystd, a);
+}
+
+static int rvin_s_std(struct file *file, void *priv, v4l2_std_id a)
+{
+ struct rvin_dev *vin = video_drvdata(file);
+ struct v4l2_subdev *sd = vin_to_source(vin);
+ struct v4l2_subdev_format fmt = {
+ .which = V4L2_SUBDEV_FORMAT_ACTIVE,
+ };
+ struct v4l2_mbus_framefmt *mf = &fmt.format;
+ int ret = v4l2_subdev_call(sd, video, s_std, a);
+
+ if (ret < 0)
+ return ret;
+
+ /* Changing the standard will change the width/height */
+ ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &fmt);
+ if (ret) {
+ vin_err(vin, "Failed to get initial format\n");
+ return ret;
+ }
+
+ vin->format.width = mf->width;
+ vin->format.height = mf->height;
+
+ vin->crop.top = vin->crop.left = 0;
+ vin->crop.width = mf->width;
+ vin->crop.height = mf->height;
+
+ vin->compose.top = vin->compose.left = 0;
+ vin->compose.width = mf->width;
+ vin->compose.height = mf->height;
+
+ return 0;
+}
+
+static int rvin_g_std(struct file *file, void *priv, v4l2_std_id *a)
+{
+ struct rvin_dev *vin = video_drvdata(file);
+ struct v4l2_subdev *sd = vin_to_source(vin);
+
+ return v4l2_subdev_call(sd, video, g_std, a);
+}
+
+static int rvin_subscribe_event(struct v4l2_fh *fh,
+ const struct v4l2_event_subscription *sub)
+{
+ switch (sub->type) {
+ case V4L2_EVENT_SOURCE_CHANGE:
+ return v4l2_event_subscribe(fh, sub, 4, NULL);
+ }
+ return v4l2_ctrl_subscribe_event(fh, sub);
+}
+
+static const struct v4l2_ioctl_ops rvin_ioctl_ops = {
+ .vidioc_querycap = rvin_querycap,
+ .vidioc_try_fmt_vid_cap = rvin_try_fmt_vid_cap,
+ .vidioc_g_fmt_vid_cap = rvin_g_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = rvin_s_fmt_vid_cap,
+ .vidioc_enum_fmt_vid_cap = rvin_enum_fmt_vid_cap,
+
+ .vidioc_g_selection = rvin_g_selection,
+ .vidioc_s_selection = rvin_s_selection,
+
+ .vidioc_cropcap = rvin_cropcap,
+
+ .vidioc_enum_input = rvin_enum_input,
+ .vidioc_g_input = rvin_g_input,
+ .vidioc_s_input = rvin_s_input,
+
+ .vidioc_querystd = rvin_querystd,
+ .vidioc_g_std = rvin_g_std,
+ .vidioc_s_std = rvin_s_std,
+
+ .vidioc_reqbufs = vb2_ioctl_reqbufs,
+ .vidioc_create_bufs = vb2_ioctl_create_bufs,
+ .vidioc_querybuf = vb2_ioctl_querybuf,
+ .vidioc_qbuf = vb2_ioctl_qbuf,
+ .vidioc_dqbuf = vb2_ioctl_dqbuf,
+ .vidioc_expbuf = vb2_ioctl_expbuf,
+ .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
+ .vidioc_streamon = vb2_ioctl_streamon,
+ .vidioc_streamoff = vb2_ioctl_streamoff,
+
+ .vidioc_log_status = v4l2_ctrl_log_status,
+ .vidioc_subscribe_event = rvin_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+};
+
+/* -----------------------------------------------------------------------------
+ * File Operations
+ */
+
+static int rvin_power_on(struct rvin_dev *vin)
+{
+ int ret;
+ struct v4l2_subdev *sd = vin_to_source(vin);
+
+ pm_runtime_get_sync(vin->v4l2_dev.dev);
+
+ ret = v4l2_subdev_call(sd, core, s_power, 1);
+ if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
+ return ret;
+ return 0;
+}
+
+static int rvin_power_off(struct rvin_dev *vin)
+{
+ int ret;
+ struct v4l2_subdev *sd = vin_to_source(vin);
+
+ ret = v4l2_subdev_call(sd, core, s_power, 0);
+
+ pm_runtime_put(vin->v4l2_dev.dev);
+
+ if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
+ return ret;
+
+ return 0;
+}
+
+static int rvin_initialize_device(struct file *file)
+{
+ struct rvin_dev *vin = video_drvdata(file);
+ int ret;
+
+ struct v4l2_format f = {
+ .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
+ .fmt.pix = {
+ .width = vin->format.width,
+ .height = vin->format.height,
+ .field = vin->format.field,
+ .colorspace = vin->format.colorspace,
+ .pixelformat = vin->format.pixelformat,
+ },
+ };
+
+ ret = rvin_power_on(vin);
+ if (ret < 0)
+ return ret;
+
+ pm_runtime_enable(&vin->vdev.dev);
+ ret = pm_runtime_resume(&vin->vdev.dev);
+ if (ret < 0 && ret != -ENOSYS)
+ goto eresume;
+
+ /*
+ * Try to configure with default parameters. Notice: this is the
+ * very first open, so, we cannot race against other calls,
+ * apart from someone else calling open() simultaneously, but
+ * .host_lock is protecting us against it.
+ */
+ ret = rvin_s_fmt_vid_cap(file, NULL, &f);
+ if (ret < 0)
+ goto esfmt;
+
+ v4l2_ctrl_handler_setup(&vin->ctrl_handler);
+
+ return 0;
+esfmt:
+ pm_runtime_disable(&vin->vdev.dev);
+eresume:
+ rvin_power_off(vin);
+
+ return ret;
+}
+
+static int rvin_open(struct file *file)
+{
+ struct rvin_dev *vin = video_drvdata(file);
+ int ret;
+
+ mutex_lock(&vin->lock);
+
+ file->private_data = vin;
+
+ ret = v4l2_fh_open(file);
+ if (ret)
+ goto unlock;
+
+ if (!v4l2_fh_is_singular_file(file))
+ goto unlock;
+
+ if (rvin_initialize_device(file)) {
+ v4l2_fh_release(file);
+ ret = -ENODEV;
+ }
+
+unlock:
+ mutex_unlock(&vin->lock);
+ return ret;
+}
+
+static int rvin_release(struct file *file)
+{
+ struct rvin_dev *vin = video_drvdata(file);
+ bool fh_singular;
+ int ret;
+
+ mutex_lock(&vin->lock);
+
+ /* Save the singular status before we call the clean-up helper */
+ fh_singular = v4l2_fh_is_singular_file(file);
+
+ /* the release helper will cleanup any on-going streaming */
+ ret = _vb2_fop_release(file, NULL);
+
+ /*
+ * If this was the last open file.
+ * Then de-initialize hw module.
+ */
+ if (fh_singular) {
+ pm_runtime_suspend(&vin->vdev.dev);
+ pm_runtime_disable(&vin->vdev.dev);
+ rvin_power_off(vin);
+ }
+
+ mutex_unlock(&vin->lock);
+
+ return ret;
+}
+
+static const struct v4l2_file_operations rvin_fops = {
+ .owner = THIS_MODULE,
+ .unlocked_ioctl = video_ioctl2,
+ .open = rvin_open,
+ .release = rvin_release,
+ .poll = vb2_fop_poll,
+ .mmap = vb2_fop_mmap,
+ .read = vb2_fop_read,
+};
+
+void rvin_v4l2_remove(struct rvin_dev *vin)
+{
+ v4l2_info(&vin->v4l2_dev, "Removing %s\n",
+ video_device_node_name(&vin->vdev));
+
+ /* Checks internaly if handlers have been init or not */
+ v4l2_ctrl_handler_free(&vin->ctrl_handler);
+
+ /* Checks internaly if vdev have been init or not */
+ video_unregister_device(&vin->vdev);
+}
+
+static void rvin_notify(struct v4l2_subdev *sd,
+ unsigned int notification, void *arg)
+{
+ struct rvin_dev *vin =
+ container_of(sd->v4l2_dev, struct rvin_dev, v4l2_dev);
+
+ switch (notification) {
+ case V4L2_DEVICE_NOTIFY_EVENT:
+ v4l2_event_queue(&vin->vdev, arg);
+ break;
+ default:
+ break;
+ }
+}
+
+int rvin_v4l2_probe(struct rvin_dev *vin)
+{
+ struct v4l2_subdev_format fmt = {
+ .which = V4L2_SUBDEV_FORMAT_ACTIVE,
+ };
+ struct v4l2_mbus_framefmt *mf = &fmt.format;
+ struct video_device *vdev = &vin->vdev;
+ struct v4l2_subdev *sd = vin_to_source(vin);
+ int ret;
+
+ v4l2_set_subdev_hostdata(sd, vin);
+
+ vin->v4l2_dev.notify = rvin_notify;
+
+ ret = v4l2_subdev_call(sd, video, g_tvnorms, &vin->vdev.tvnorms);
+ if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
+ return ret;
+
+ if (vin->vdev.tvnorms == 0) {
+ /* Disable the STD API if there are no tvnorms defined */
+ v4l2_disable_ioctl(&vin->vdev, VIDIOC_G_STD);
+ v4l2_disable_ioctl(&vin->vdev, VIDIOC_S_STD);
+ v4l2_disable_ioctl(&vin->vdev, VIDIOC_QUERYSTD);
+ v4l2_disable_ioctl(&vin->vdev, VIDIOC_ENUMSTD);
+ }
+
+ /* Add the controls */
+ /*
+ * Currently the subdev with the largest number of controls (13) is
+ * ov6550. So let's pick 16 as a hint for the control handler. Note
+ * that this is a hint only: too large and you waste some memory, too
+ * small and there is a (very) small performance hit when looking up
+ * controls in the internal hash.
+ */
+ ret = v4l2_ctrl_handler_init(&vin->ctrl_handler, 16);
+ if (ret < 0)
+ return ret;
+
+ ret = v4l2_ctrl_add_handler(&vin->ctrl_handler, sd->ctrl_handler, NULL);
+ if (ret < 0)
+ return ret;
+
+ /* video node */
+ vdev->fops = &rvin_fops;
+ vdev->v4l2_dev = &vin->v4l2_dev;
+ vdev->queue = &vin->queue;
+ strlcpy(vdev->name, KBUILD_MODNAME, sizeof(vdev->name));
+ vdev->release = video_device_release_empty;
+ vdev->ioctl_ops = &rvin_ioctl_ops;
+ vdev->lock = &vin->lock;
+ vdev->ctrl_handler = &vin->ctrl_handler;
+ vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
+ V4L2_CAP_READWRITE;
+
+ /* Try to improve our guess of a reasonable window format */
+ ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &fmt);
+ if (ret) {
+ vin_err(vin, "Failed to get initial format\n");
+ return ret;
+ }
+
+ /* Set default format */
+ vin->format.width = mf->width;
+ vin->format.height = mf->height;
+ vin->format.colorspace = mf->colorspace;
+ vin->format.field = mf->field;
+ vin->format.pixelformat = RVIN_DEFAULT_FORMAT;
+
+
+ /* Set initial crop and compose */
+ vin->crop.top = vin->crop.left = 0;
+ vin->crop.width = mf->width;
+ vin->crop.height = mf->height;
+
+ vin->compose.top = vin->compose.left = 0;
+ vin->compose.width = mf->width;
+ vin->compose.height = mf->height;
+
+ ret = video_register_device(&vin->vdev, VFL_TYPE_GRABBER, -1);
+ if (ret) {
+ vin_err(vin, "Failed to register video device\n");
+ return ret;
+ }
+
+ video_set_drvdata(&vin->vdev, vin);
+
+ v4l2_info(&vin->v4l2_dev, "Device registered as %s\n",
+ video_device_node_name(&vin->vdev));
+
+ return ret;
+}
projects / openwrt / staging / blogic.git / commitdiff