| /* linux/drivers/media/video/s5p-jpeg/jpeg-core.c |
| * |
| * Copyright (c) 2011 Samsung Electronics Co., Ltd. |
| * http://www.samsung.com |
| * |
| * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/clk.h> |
| #include <linux/err.h> |
| #include <linux/gfp.h> |
| #include <linux/interrupt.h> |
| #include <linux/io.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/slab.h> |
| #include <linux/spinlock.h> |
| #include <linux/string.h> |
| #include <media/v4l2-mem2mem.h> |
| #include <media/v4l2-ioctl.h> |
| #include <media/videobuf2-core.h> |
| #include <media/videobuf2-dma-contig.h> |
| |
| #include "jpeg-core.h" |
| #include "jpeg-hw.h" |
| |
| static struct s5p_jpeg_fmt formats_enc[] = { |
| { |
| .name = "JPEG JFIF", |
| .fourcc = V4L2_PIX_FMT_JPEG, |
| .colplanes = 1, |
| .types = MEM2MEM_CAPTURE, |
| }, |
| { |
| .name = "YUV 4:2:2 packed, YCbYCr", |
| .fourcc = V4L2_PIX_FMT_YUYV, |
| .depth = 16, |
| .colplanes = 1, |
| .types = MEM2MEM_OUTPUT, |
| }, |
| { |
| .name = "RGB565", |
| .fourcc = V4L2_PIX_FMT_RGB565, |
| .depth = 16, |
| .colplanes = 1, |
| .types = MEM2MEM_OUTPUT, |
| }, |
| }; |
| #define NUM_FORMATS_ENC ARRAY_SIZE(formats_enc) |
| |
| static struct s5p_jpeg_fmt formats_dec[] = { |
| { |
| .name = "YUV 4:2:0 planar, YCbCr", |
| .fourcc = V4L2_PIX_FMT_YUV420, |
| .depth = 12, |
| .colplanes = 3, |
| .h_align = 4, |
| .v_align = 4, |
| .types = MEM2MEM_CAPTURE, |
| }, |
| { |
| .name = "YUV 4:2:2 packed, YCbYCr", |
| .fourcc = V4L2_PIX_FMT_YUYV, |
| .depth = 16, |
| .colplanes = 1, |
| .h_align = 4, |
| .v_align = 3, |
| .types = MEM2MEM_CAPTURE, |
| }, |
| { |
| .name = "JPEG JFIF", |
| .fourcc = V4L2_PIX_FMT_JPEG, |
| .colplanes = 1, |
| .types = MEM2MEM_OUTPUT, |
| }, |
| }; |
| #define NUM_FORMATS_DEC ARRAY_SIZE(formats_dec) |
| |
| static const unsigned char qtbl_luminance[4][64] = { |
| {/* level 1 - high quality */ |
| 8, 6, 6, 8, 12, 14, 16, 17, |
| 6, 6, 6, 8, 10, 13, 12, 15, |
| 6, 6, 7, 8, 13, 14, 18, 24, |
| 8, 8, 8, 14, 13, 19, 24, 35, |
| 12, 10, 13, 13, 20, 26, 34, 39, |
| 14, 13, 14, 19, 26, 34, 39, 39, |
| 16, 12, 18, 24, 34, 39, 39, 39, |
| 17, 15, 24, 35, 39, 39, 39, 39 |
| }, |
| {/* level 2 */ |
| 12, 8, 8, 12, 17, 21, 24, 23, |
| 8, 9, 9, 11, 15, 19, 18, 23, |
| 8, 9, 10, 12, 19, 20, 27, 36, |
| 12, 11, 12, 21, 20, 28, 36, 53, |
| 17, 15, 19, 20, 30, 39, 51, 59, |
| 21, 19, 20, 28, 39, 51, 59, 59, |
| 24, 18, 27, 36, 51, 59, 59, 59, |
| 23, 23, 36, 53, 59, 59, 59, 59 |
| }, |
| {/* level 3 */ |
| 16, 11, 11, 16, 23, 27, 31, 30, |
| 11, 12, 12, 15, 20, 23, 23, 30, |
| 11, 12, 13, 16, 23, 26, 35, 47, |
| 16, 15, 16, 23, 26, 37, 47, 64, |
| 23, 20, 23, 26, 39, 51, 64, 64, |
| 27, 23, 26, 37, 51, 64, 64, 64, |
| 31, 23, 35, 47, 64, 64, 64, 64, |
| 30, 30, 47, 64, 64, 64, 64, 64 |
| }, |
| {/*level 4 - low quality */ |
| 20, 16, 25, 39, 50, 46, 62, 68, |
| 16, 18, 23, 38, 38, 53, 65, 68, |
| 25, 23, 31, 38, 53, 65, 68, 68, |
| 39, 38, 38, 53, 65, 68, 68, 68, |
| 50, 38, 53, 65, 68, 68, 68, 68, |
| 46, 53, 65, 68, 68, 68, 68, 68, |
| 62, 65, 68, 68, 68, 68, 68, 68, |
| 68, 68, 68, 68, 68, 68, 68, 68 |
| } |
| }; |
| |
| static const unsigned char qtbl_chrominance[4][64] = { |
| {/* level 1 - high quality */ |
| 9, 8, 9, 11, 14, 17, 19, 24, |
| 8, 10, 9, 11, 14, 13, 17, 22, |
| 9, 9, 13, 14, 13, 15, 23, 26, |
| 11, 11, 14, 14, 15, 20, 26, 33, |
| 14, 14, 13, 15, 20, 24, 33, 39, |
| 17, 13, 15, 20, 24, 32, 39, 39, |
| 19, 17, 23, 26, 33, 39, 39, 39, |
| 24, 22, 26, 33, 39, 39, 39, 39 |
| }, |
| {/* level 2 */ |
| 13, 11, 13, 16, 20, 20, 29, 37, |
| 11, 14, 14, 14, 16, 20, 26, 32, |
| 13, 14, 15, 17, 20, 23, 35, 40, |
| 16, 14, 17, 21, 23, 30, 40, 50, |
| 20, 16, 20, 23, 30, 37, 50, 59, |
| 20, 20, 23, 30, 37, 48, 59, 59, |
| 29, 26, 35, 40, 50, 59, 59, 59, |
| 37, 32, 40, 50, 59, 59, 59, 59 |
| }, |
| {/* level 3 */ |
| 17, 15, 17, 21, 20, 26, 38, 48, |
| 15, 19, 18, 17, 20, 26, 35, 43, |
| 17, 18, 20, 22, 26, 30, 46, 53, |
| 21, 17, 22, 28, 30, 39, 53, 64, |
| 20, 20, 26, 30, 39, 48, 64, 64, |
| 26, 26, 30, 39, 48, 63, 64, 64, |
| 38, 35, 46, 53, 64, 64, 64, 64, |
| 48, 43, 53, 64, 64, 64, 64, 64 |
| }, |
| {/*level 4 - low quality */ |
| 21, 25, 32, 38, 54, 68, 68, 68, |
| 25, 28, 24, 38, 54, 68, 68, 68, |
| 32, 24, 32, 43, 66, 68, 68, 68, |
| 38, 38, 43, 53, 68, 68, 68, 68, |
| 54, 54, 66, 68, 68, 68, 68, 68, |
| 68, 68, 68, 68, 68, 68, 68, 68, |
| 68, 68, 68, 68, 68, 68, 68, 68, |
| 68, 68, 68, 68, 68, 68, 68, 68 |
| } |
| }; |
| |
| static const unsigned char hdctbl0[16] = { |
| 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 |
| }; |
| |
| static const unsigned char hdctblg0[12] = { |
| 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xa, 0xb |
| }; |
| static const unsigned char hactbl0[16] = { |
| 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d |
| }; |
| static const unsigned char hactblg0[162] = { |
| 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, |
| 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07, |
| 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, |
| 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0, |
| 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16, |
| 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28, |
| 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, |
| 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, |
| 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, |
| 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, |
| 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, |
| 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, |
| 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, |
| 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, |
| 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, |
| 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5, |
| 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, |
| 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2, |
| 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, |
| 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, |
| 0xf9, 0xfa |
| }; |
| |
| static inline struct s5p_jpeg_ctx *ctrl_to_ctx(struct v4l2_ctrl *c) |
| { |
| return container_of(c->handler, struct s5p_jpeg_ctx, ctrl_handler); |
| } |
| |
| static inline struct s5p_jpeg_ctx *fh_to_ctx(struct v4l2_fh *fh) |
| { |
| return container_of(fh, struct s5p_jpeg_ctx, fh); |
| } |
| |
| static inline void jpeg_set_qtbl(void __iomem *regs, const unsigned char *qtbl, |
| unsigned long tab, int len) |
| { |
| int i; |
| |
| for (i = 0; i < len; i++) |
| writel((unsigned int)qtbl[i], regs + tab + (i * 0x04)); |
| } |
| |
| static inline void jpeg_set_qtbl_lum(void __iomem *regs, int quality) |
| { |
| /* this driver fills quantisation table 0 with data for luma */ |
| jpeg_set_qtbl(regs, qtbl_luminance[quality], S5P_JPG_QTBL_CONTENT(0), |
| ARRAY_SIZE(qtbl_luminance[quality])); |
| } |
| |
| static inline void jpeg_set_qtbl_chr(void __iomem *regs, int quality) |
| { |
| /* this driver fills quantisation table 1 with data for chroma */ |
| jpeg_set_qtbl(regs, qtbl_chrominance[quality], S5P_JPG_QTBL_CONTENT(1), |
| ARRAY_SIZE(qtbl_chrominance[quality])); |
| } |
| |
| static inline void jpeg_set_htbl(void __iomem *regs, const unsigned char *htbl, |
| unsigned long tab, int len) |
| { |
| int i; |
| |
| for (i = 0; i < len; i++) |
| writel((unsigned int)htbl[i], regs + tab + (i * 0x04)); |
| } |
| |
| static inline void jpeg_set_hdctbl(void __iomem *regs) |
| { |
| /* this driver fills table 0 for this component */ |
| jpeg_set_htbl(regs, hdctbl0, S5P_JPG_HDCTBL(0), ARRAY_SIZE(hdctbl0)); |
| } |
| |
| static inline void jpeg_set_hdctblg(void __iomem *regs) |
| { |
| /* this driver fills table 0 for this component */ |
| jpeg_set_htbl(regs, hdctblg0, S5P_JPG_HDCTBLG(0), ARRAY_SIZE(hdctblg0)); |
| } |
| |
| static inline void jpeg_set_hactbl(void __iomem *regs) |
| { |
| /* this driver fills table 0 for this component */ |
| jpeg_set_htbl(regs, hactbl0, S5P_JPG_HACTBL(0), ARRAY_SIZE(hactbl0)); |
| } |
| |
| static inline void jpeg_set_hactblg(void __iomem *regs) |
| { |
| /* this driver fills table 0 for this component */ |
| jpeg_set_htbl(regs, hactblg0, S5P_JPG_HACTBLG(0), ARRAY_SIZE(hactblg0)); |
| } |
| |
| /* |
| * ============================================================================ |
| * Device file operations |
| * ============================================================================ |
| */ |
| |
| static int queue_init(void *priv, struct vb2_queue *src_vq, |
| struct vb2_queue *dst_vq); |
| static struct s5p_jpeg_fmt *s5p_jpeg_find_format(unsigned int mode, |
| __u32 pixelformat); |
| static int s5p_jpeg_controls_create(struct s5p_jpeg_ctx *ctx); |
| |
| static int s5p_jpeg_open(struct file *file) |
| { |
| struct s5p_jpeg *jpeg = video_drvdata(file); |
| struct video_device *vfd = video_devdata(file); |
| struct s5p_jpeg_ctx *ctx; |
| struct s5p_jpeg_fmt *out_fmt; |
| int ret = 0; |
| |
| ctx = kzalloc(sizeof *ctx, GFP_KERNEL); |
| if (!ctx) |
| return -ENOMEM; |
| |
| if (mutex_lock_interruptible(&jpeg->lock)) { |
| ret = -ERESTARTSYS; |
| goto free; |
| } |
| |
| v4l2_fh_init(&ctx->fh, vfd); |
| /* Use separate control handler per file handle */ |
| ctx->fh.ctrl_handler = &ctx->ctrl_handler; |
| file->private_data = &ctx->fh; |
| v4l2_fh_add(&ctx->fh); |
| |
| ctx->jpeg = jpeg; |
| if (vfd == jpeg->vfd_encoder) { |
| ctx->mode = S5P_JPEG_ENCODE; |
| out_fmt = s5p_jpeg_find_format(ctx->mode, V4L2_PIX_FMT_RGB565); |
| } else { |
| ctx->mode = S5P_JPEG_DECODE; |
| out_fmt = s5p_jpeg_find_format(ctx->mode, V4L2_PIX_FMT_JPEG); |
| } |
| |
| ret = s5p_jpeg_controls_create(ctx); |
| if (ret < 0) |
| goto error; |
| |
| ctx->m2m_ctx = v4l2_m2m_ctx_init(jpeg->m2m_dev, ctx, queue_init); |
| if (IS_ERR(ctx->m2m_ctx)) { |
| ret = PTR_ERR(ctx->m2m_ctx); |
| goto error; |
| } |
| |
| ctx->out_q.fmt = out_fmt; |
| ctx->cap_q.fmt = s5p_jpeg_find_format(ctx->mode, V4L2_PIX_FMT_YUYV); |
| mutex_unlock(&jpeg->lock); |
| return 0; |
| |
| error: |
| v4l2_fh_del(&ctx->fh); |
| v4l2_fh_exit(&ctx->fh); |
| mutex_unlock(&jpeg->lock); |
| free: |
| kfree(ctx); |
| return ret; |
| } |
| |
| static int s5p_jpeg_release(struct file *file) |
| { |
| struct s5p_jpeg *jpeg = video_drvdata(file); |
| struct s5p_jpeg_ctx *ctx = fh_to_ctx(file->private_data); |
| |
| mutex_lock(&jpeg->lock); |
| v4l2_m2m_ctx_release(ctx->m2m_ctx); |
| mutex_unlock(&jpeg->lock); |
| v4l2_ctrl_handler_free(&ctx->ctrl_handler); |
| v4l2_fh_del(&ctx->fh); |
| v4l2_fh_exit(&ctx->fh); |
| kfree(ctx); |
| |
| return 0; |
| } |
| |
| static unsigned int s5p_jpeg_poll(struct file *file, |
| struct poll_table_struct *wait) |
| { |
| struct s5p_jpeg *jpeg = video_drvdata(file); |
| struct s5p_jpeg_ctx *ctx = fh_to_ctx(file->private_data); |
| unsigned int res; |
| |
| mutex_lock(&jpeg->lock); |
| res = v4l2_m2m_poll(file, ctx->m2m_ctx, wait); |
| mutex_unlock(&jpeg->lock); |
| return res; |
| } |
| |
| static int s5p_jpeg_mmap(struct file *file, struct vm_area_struct *vma) |
| { |
| struct s5p_jpeg *jpeg = video_drvdata(file); |
| struct s5p_jpeg_ctx *ctx = fh_to_ctx(file->private_data); |
| int ret; |
| |
| if (mutex_lock_interruptible(&jpeg->lock)) |
| return -ERESTARTSYS; |
| ret = v4l2_m2m_mmap(file, ctx->m2m_ctx, vma); |
| mutex_unlock(&jpeg->lock); |
| return ret; |
| } |
| |
| static const struct v4l2_file_operations s5p_jpeg_fops = { |
| .owner = THIS_MODULE, |
| .open = s5p_jpeg_open, |
| .release = s5p_jpeg_release, |
| .poll = s5p_jpeg_poll, |
| .unlocked_ioctl = video_ioctl2, |
| .mmap = s5p_jpeg_mmap, |
| }; |
| |
| /* |
| * ============================================================================ |
| * video ioctl operations |
| * ============================================================================ |
| */ |
| |
| static int get_byte(struct s5p_jpeg_buffer *buf) |
| { |
| if (buf->curr >= buf->size) |
| return -1; |
| |
| return ((unsigned char *)buf->data)[buf->curr++]; |
| } |
| |
| static int get_word_be(struct s5p_jpeg_buffer *buf, unsigned int *word) |
| { |
| unsigned int temp; |
| int byte; |
| |
| byte = get_byte(buf); |
| if (byte == -1) |
| return -1; |
| temp = byte << 8; |
| byte = get_byte(buf); |
| if (byte == -1) |
| return -1; |
| *word = (unsigned int)byte | temp; |
| return 0; |
| } |
| |
| static void skip(struct s5p_jpeg_buffer *buf, long len) |
| { |
| if (len <= 0) |
| return; |
| |
| while (len--) |
| get_byte(buf); |
| } |
| |
| static bool s5p_jpeg_parse_hdr(struct s5p_jpeg_q_data *result, |
| unsigned long buffer, unsigned long size) |
| { |
| int c, components, notfound; |
| unsigned int height, width, word; |
| long length; |
| struct s5p_jpeg_buffer jpeg_buffer; |
| |
| jpeg_buffer.size = size; |
| jpeg_buffer.data = buffer; |
| jpeg_buffer.curr = 0; |
| |
| notfound = 1; |
| while (notfound) { |
| c = get_byte(&jpeg_buffer); |
| if (c == -1) |
| break; |
| if (c != 0xff) |
| continue; |
| do |
| c = get_byte(&jpeg_buffer); |
| while (c == 0xff); |
| if (c == -1) |
| break; |
| if (c == 0) |
| continue; |
| length = 0; |
| switch (c) { |
| /* SOF0: baseline JPEG */ |
| case SOF0: |
| if (get_word_be(&jpeg_buffer, &word)) |
| break; |
| if (get_byte(&jpeg_buffer) == -1) |
| break; |
| if (get_word_be(&jpeg_buffer, &height)) |
| break; |
| if (get_word_be(&jpeg_buffer, &width)) |
| break; |
| components = get_byte(&jpeg_buffer); |
| if (components == -1) |
| break; |
| notfound = 0; |
| |
| skip(&jpeg_buffer, components * 3); |
| break; |
| |
| /* skip payload-less markers */ |
| case RST ... RST + 7: |
| case SOI: |
| case EOI: |
| case TEM: |
| break; |
| |
| /* skip uninteresting payload markers */ |
| default: |
| if (get_word_be(&jpeg_buffer, &word)) |
| break; |
| length = (long)word - 2; |
| skip(&jpeg_buffer, length); |
| break; |
| } |
| } |
| result->w = width; |
| result->h = height; |
| result->size = components; |
| return !notfound; |
| } |
| |
| static int s5p_jpeg_querycap(struct file *file, void *priv, |
| struct v4l2_capability *cap) |
| { |
| struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv); |
| |
| if (ctx->mode == S5P_JPEG_ENCODE) { |
| strlcpy(cap->driver, S5P_JPEG_M2M_NAME " encoder", |
| sizeof(cap->driver)); |
| strlcpy(cap->card, S5P_JPEG_M2M_NAME " encoder", |
| sizeof(cap->card)); |
| } else { |
| strlcpy(cap->driver, S5P_JPEG_M2M_NAME " decoder", |
| sizeof(cap->driver)); |
| strlcpy(cap->card, S5P_JPEG_M2M_NAME " decoder", |
| sizeof(cap->card)); |
| } |
| cap->bus_info[0] = 0; |
| /* |
| * This is only a mem-to-mem video device. The capture and output |
| * device capability flags are left only for backward compatibility |
| * and are scheduled for removal. |
| */ |
| cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M | |
| V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT; |
| return 0; |
| } |
| |
| static int enum_fmt(struct s5p_jpeg_fmt *formats, int n, |
| struct v4l2_fmtdesc *f, u32 type) |
| { |
| int i, num = 0; |
| |
| for (i = 0; i < n; ++i) { |
| if (formats[i].types & type) { |
| /* index-th format of type type found ? */ |
| if (num == f->index) |
| break; |
| /* Correct type but haven't reached our index yet, |
| * just increment per-type index */ |
| ++num; |
| } |
| } |
| |
| /* Format not found */ |
| if (i >= n) |
| return -EINVAL; |
| |
| strlcpy(f->description, formats[i].name, sizeof(f->description)); |
| f->pixelformat = formats[i].fourcc; |
| |
| return 0; |
| } |
| |
| static int s5p_jpeg_enum_fmt_vid_cap(struct file *file, void *priv, |
| struct v4l2_fmtdesc *f) |
| { |
| struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv); |
| |
| if (ctx->mode == S5P_JPEG_ENCODE) |
| return enum_fmt(formats_enc, NUM_FORMATS_ENC, f, |
| MEM2MEM_CAPTURE); |
| |
| return enum_fmt(formats_dec, NUM_FORMATS_DEC, f, MEM2MEM_CAPTURE); |
| } |
| |
| static int s5p_jpeg_enum_fmt_vid_out(struct file *file, void *priv, |
| struct v4l2_fmtdesc *f) |
| { |
| struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv); |
| |
| if (ctx->mode == S5P_JPEG_ENCODE) |
| return enum_fmt(formats_enc, NUM_FORMATS_ENC, f, |
| MEM2MEM_OUTPUT); |
| |
| return enum_fmt(formats_dec, NUM_FORMATS_DEC, f, MEM2MEM_OUTPUT); |
| } |
| |
| static struct s5p_jpeg_q_data *get_q_data(struct s5p_jpeg_ctx *ctx, |
| enum v4l2_buf_type type) |
| { |
| if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT) |
| return &ctx->out_q; |
| if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return &ctx->cap_q; |
| |
| return NULL; |
| } |
| |
| static int s5p_jpeg_g_fmt(struct file *file, void *priv, struct v4l2_format *f) |
| { |
| struct vb2_queue *vq; |
| struct s5p_jpeg_q_data *q_data = NULL; |
| struct v4l2_pix_format *pix = &f->fmt.pix; |
| struct s5p_jpeg_ctx *ct = fh_to_ctx(priv); |
| |
| vq = v4l2_m2m_get_vq(ct->m2m_ctx, f->type); |
| if (!vq) |
| return -EINVAL; |
| |
| if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && |
| ct->mode == S5P_JPEG_DECODE && !ct->hdr_parsed) |
| return -EINVAL; |
| q_data = get_q_data(ct, f->type); |
| BUG_ON(q_data == NULL); |
| |
| pix->width = q_data->w; |
| pix->height = q_data->h; |
| pix->field = V4L2_FIELD_NONE; |
| pix->pixelformat = q_data->fmt->fourcc; |
| pix->bytesperline = 0; |
| if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG) { |
| u32 bpl = q_data->w; |
| if (q_data->fmt->colplanes == 1) |
| bpl = (bpl * q_data->fmt->depth) >> 3; |
| pix->bytesperline = bpl; |
| } |
| pix->sizeimage = q_data->size; |
| |
| return 0; |
| } |
| |
| static struct s5p_jpeg_fmt *s5p_jpeg_find_format(unsigned int mode, |
| u32 pixelformat) |
| { |
| unsigned int k; |
| struct s5p_jpeg_fmt *formats; |
| int n; |
| |
| if (mode == S5P_JPEG_ENCODE) { |
| formats = formats_enc; |
| n = NUM_FORMATS_ENC; |
| } else { |
| formats = formats_dec; |
| n = NUM_FORMATS_DEC; |
| } |
| |
| for (k = 0; k < n; k++) { |
| struct s5p_jpeg_fmt *fmt = &formats[k]; |
| if (fmt->fourcc == pixelformat) |
| return fmt; |
| } |
| |
| return NULL; |
| |
| } |
| |
| static void jpeg_bound_align_image(u32 *w, unsigned int wmin, unsigned int wmax, |
| unsigned int walign, |
| u32 *h, unsigned int hmin, unsigned int hmax, |
| unsigned int halign) |
| { |
| int width, height, w_step, h_step; |
| |
| width = *w; |
| height = *h; |
| |
| w_step = 1 << walign; |
| h_step = 1 << halign; |
| v4l_bound_align_image(w, wmin, wmax, walign, h, hmin, hmax, halign, 0); |
| |
| if (*w < width && (*w + w_step) < wmax) |
| *w += w_step; |
| if (*h < height && (*h + h_step) < hmax) |
| *h += h_step; |
| |
| } |
| |
| static int vidioc_try_fmt(struct v4l2_format *f, struct s5p_jpeg_fmt *fmt, |
| struct s5p_jpeg_ctx *ctx, int q_type) |
| { |
| struct v4l2_pix_format *pix = &f->fmt.pix; |
| |
| if (pix->field == V4L2_FIELD_ANY) |
| pix->field = V4L2_FIELD_NONE; |
| else if (pix->field != V4L2_FIELD_NONE) |
| return -EINVAL; |
| |
| /* V4L2 specification suggests the driver corrects the format struct |
| * if any of the dimensions is unsupported */ |
| if (q_type == MEM2MEM_OUTPUT) |
| jpeg_bound_align_image(&pix->width, S5P_JPEG_MIN_WIDTH, |
| S5P_JPEG_MAX_WIDTH, 0, |
| &pix->height, S5P_JPEG_MIN_HEIGHT, |
| S5P_JPEG_MAX_HEIGHT, 0); |
| else |
| jpeg_bound_align_image(&pix->width, S5P_JPEG_MIN_WIDTH, |
| S5P_JPEG_MAX_WIDTH, fmt->h_align, |
| &pix->height, S5P_JPEG_MIN_HEIGHT, |
| S5P_JPEG_MAX_HEIGHT, fmt->v_align); |
| |
| if (fmt->fourcc == V4L2_PIX_FMT_JPEG) { |
| if (pix->sizeimage <= 0) |
| pix->sizeimage = PAGE_SIZE; |
| pix->bytesperline = 0; |
| } else { |
| u32 bpl = pix->bytesperline; |
| |
| if (fmt->colplanes > 1 && bpl < pix->width) |
| bpl = pix->width; /* planar */ |
| |
| if (fmt->colplanes == 1 && /* packed */ |
| (bpl << 3) * fmt->depth < pix->width) |
| bpl = (pix->width * fmt->depth) >> 3; |
| |
| pix->bytesperline = bpl; |
| pix->sizeimage = (pix->width * pix->height * fmt->depth) >> 3; |
| } |
| |
| return 0; |
| } |
| |
| static int s5p_jpeg_try_fmt_vid_cap(struct file *file, void *priv, |
| struct v4l2_format *f) |
| { |
| struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv); |
| struct s5p_jpeg_fmt *fmt; |
| |
| fmt = s5p_jpeg_find_format(ctx->mode, f->fmt.pix.pixelformat); |
| if (!fmt || !(fmt->types & MEM2MEM_CAPTURE)) { |
| v4l2_err(&ctx->jpeg->v4l2_dev, |
| "Fourcc format (0x%08x) invalid.\n", |
| f->fmt.pix.pixelformat); |
| return -EINVAL; |
| } |
| |
| return vidioc_try_fmt(f, fmt, ctx, MEM2MEM_CAPTURE); |
| } |
| |
| static int s5p_jpeg_try_fmt_vid_out(struct file *file, void *priv, |
| struct v4l2_format *f) |
| { |
| struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv); |
| struct s5p_jpeg_fmt *fmt; |
| |
| fmt = s5p_jpeg_find_format(ctx->mode, f->fmt.pix.pixelformat); |
| if (!fmt || !(fmt->types & MEM2MEM_OUTPUT)) { |
| v4l2_err(&ctx->jpeg->v4l2_dev, |
| "Fourcc format (0x%08x) invalid.\n", |
| f->fmt.pix.pixelformat); |
| return -EINVAL; |
| } |
| |
| return vidioc_try_fmt(f, fmt, ctx, MEM2MEM_OUTPUT); |
| } |
| |
| static int s5p_jpeg_s_fmt(struct s5p_jpeg_ctx *ct, struct v4l2_format *f) |
| { |
| struct vb2_queue *vq; |
| struct s5p_jpeg_q_data *q_data = NULL; |
| struct v4l2_pix_format *pix = &f->fmt.pix; |
| |
| vq = v4l2_m2m_get_vq(ct->m2m_ctx, f->type); |
| if (!vq) |
| return -EINVAL; |
| |
| q_data = get_q_data(ct, f->type); |
| BUG_ON(q_data == NULL); |
| |
| if (vb2_is_busy(vq)) { |
| v4l2_err(&ct->jpeg->v4l2_dev, "%s queue busy\n", __func__); |
| return -EBUSY; |
| } |
| |
| q_data->fmt = s5p_jpeg_find_format(ct->mode, pix->pixelformat); |
| q_data->w = pix->width; |
| q_data->h = pix->height; |
| if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG) |
| q_data->size = q_data->w * q_data->h * q_data->fmt->depth >> 3; |
| else |
| q_data->size = pix->sizeimage; |
| |
| return 0; |
| } |
| |
| static int s5p_jpeg_s_fmt_vid_cap(struct file *file, void *priv, |
| struct v4l2_format *f) |
| { |
| int ret; |
| |
| ret = s5p_jpeg_try_fmt_vid_cap(file, priv, f); |
| if (ret) |
| return ret; |
| |
| return s5p_jpeg_s_fmt(fh_to_ctx(priv), f); |
| } |
| |
| static int s5p_jpeg_s_fmt_vid_out(struct file *file, void *priv, |
| struct v4l2_format *f) |
| { |
| int ret; |
| |
| ret = s5p_jpeg_try_fmt_vid_out(file, priv, f); |
| if (ret) |
| return ret; |
| |
| return s5p_jpeg_s_fmt(fh_to_ctx(priv), f); |
| } |
| |
| static int s5p_jpeg_reqbufs(struct file *file, void *priv, |
| struct v4l2_requestbuffers *reqbufs) |
| { |
| struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv); |
| |
| return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs); |
| } |
| |
| static int s5p_jpeg_querybuf(struct file *file, void *priv, |
| struct v4l2_buffer *buf) |
| { |
| struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv); |
| |
| return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf); |
| } |
| |
| static int s5p_jpeg_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) |
| { |
| struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv); |
| |
| return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf); |
| } |
| |
| static int s5p_jpeg_dqbuf(struct file *file, void *priv, |
| struct v4l2_buffer *buf) |
| { |
| struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv); |
| |
| return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf); |
| } |
| |
| static int s5p_jpeg_streamon(struct file *file, void *priv, |
| enum v4l2_buf_type type) |
| { |
| struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv); |
| |
| return v4l2_m2m_streamon(file, ctx->m2m_ctx, type); |
| } |
| |
| static int s5p_jpeg_streamoff(struct file *file, void *priv, |
| enum v4l2_buf_type type) |
| { |
| struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv); |
| |
| return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type); |
| } |
| |
| static int s5p_jpeg_g_selection(struct file *file, void *priv, |
| struct v4l2_selection *s) |
| { |
| struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv); |
| |
| if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT && |
| s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return -EINVAL; |
| |
| /* For JPEG blob active == default == bounds */ |
| switch (s->target) { |
| case V4L2_SEL_TGT_CROP: |
| case V4L2_SEL_TGT_CROP_BOUNDS: |
| case V4L2_SEL_TGT_CROP_DEFAULT: |
| case V4L2_SEL_TGT_COMPOSE: |
| case V4L2_SEL_TGT_COMPOSE_DEFAULT: |
| s->r.width = ctx->out_q.w; |
| s->r.height = ctx->out_q.h; |
| break; |
| case V4L2_SEL_TGT_COMPOSE_BOUNDS: |
| case V4L2_SEL_TGT_COMPOSE_PADDED: |
| s->r.width = ctx->cap_q.w; |
| s->r.height = ctx->cap_q.h; |
| break; |
| default: |
| return -EINVAL; |
| } |
| s->r.left = 0; |
| s->r.top = 0; |
| return 0; |
| } |
| |
| /* |
| * V4L2 controls |
| */ |
| |
| static int s5p_jpeg_g_volatile_ctrl(struct v4l2_ctrl *ctrl) |
| { |
| struct s5p_jpeg_ctx *ctx = ctrl_to_ctx(ctrl); |
| struct s5p_jpeg *jpeg = ctx->jpeg; |
| unsigned long flags; |
| |
| switch (ctrl->id) { |
| case V4L2_CID_JPEG_CHROMA_SUBSAMPLING: |
| spin_lock_irqsave(&jpeg->slock, flags); |
| |
| WARN_ON(ctx->subsampling > S5P_SUBSAMPLING_MODE_GRAY); |
| if (ctx->subsampling > 2) |
| ctrl->val = V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY; |
| else |
| ctrl->val = ctx->subsampling; |
| spin_unlock_irqrestore(&jpeg->slock, flags); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static int s5p_jpeg_s_ctrl(struct v4l2_ctrl *ctrl) |
| { |
| struct s5p_jpeg_ctx *ctx = ctrl_to_ctx(ctrl); |
| unsigned long flags; |
| |
| spin_lock_irqsave(&ctx->jpeg->slock, flags); |
| |
| switch (ctrl->id) { |
| case V4L2_CID_JPEG_COMPRESSION_QUALITY: |
| ctx->compr_quality = S5P_JPEG_COMPR_QUAL_WORST - ctrl->val; |
| break; |
| case V4L2_CID_JPEG_RESTART_INTERVAL: |
| ctx->restart_interval = ctrl->val; |
| break; |
| case V4L2_CID_JPEG_CHROMA_SUBSAMPLING: |
| ctx->subsampling = ctrl->val; |
| break; |
| } |
| |
| spin_unlock_irqrestore(&ctx->jpeg->slock, flags); |
| return 0; |
| } |
| |
| static const struct v4l2_ctrl_ops s5p_jpeg_ctrl_ops = { |
| .g_volatile_ctrl = s5p_jpeg_g_volatile_ctrl, |
| .s_ctrl = s5p_jpeg_s_ctrl, |
| }; |
| |
| static int s5p_jpeg_controls_create(struct s5p_jpeg_ctx *ctx) |
| { |
| unsigned int mask = ~0x27; /* 444, 422, 420, GRAY */ |
| struct v4l2_ctrl *ctrl; |
| |
| v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3); |
| |
| if (ctx->mode == S5P_JPEG_ENCODE) { |
| v4l2_ctrl_new_std(&ctx->ctrl_handler, &s5p_jpeg_ctrl_ops, |
| V4L2_CID_JPEG_COMPRESSION_QUALITY, |
| 0, 3, 1, 3); |
| |
| v4l2_ctrl_new_std(&ctx->ctrl_handler, &s5p_jpeg_ctrl_ops, |
| V4L2_CID_JPEG_RESTART_INTERVAL, |
| 0, 3, 0xffff, 0); |
| mask = ~0x06; /* 422, 420 */ |
| } |
| |
| ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrl_handler, &s5p_jpeg_ctrl_ops, |
| V4L2_CID_JPEG_CHROMA_SUBSAMPLING, |
| V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY, mask, |
| V4L2_JPEG_CHROMA_SUBSAMPLING_422); |
| |
| if (ctx->ctrl_handler.error) |
| return ctx->ctrl_handler.error; |
| |
| if (ctx->mode == S5P_JPEG_DECODE) |
| ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE | |
| V4L2_CTRL_FLAG_READ_ONLY; |
| return 0; |
| } |
| |
| static const struct v4l2_ioctl_ops s5p_jpeg_ioctl_ops = { |
| .vidioc_querycap = s5p_jpeg_querycap, |
| |
| .vidioc_enum_fmt_vid_cap = s5p_jpeg_enum_fmt_vid_cap, |
| .vidioc_enum_fmt_vid_out = s5p_jpeg_enum_fmt_vid_out, |
| |
| .vidioc_g_fmt_vid_cap = s5p_jpeg_g_fmt, |
| .vidioc_g_fmt_vid_out = s5p_jpeg_g_fmt, |
| |
| .vidioc_try_fmt_vid_cap = s5p_jpeg_try_fmt_vid_cap, |
| .vidioc_try_fmt_vid_out = s5p_jpeg_try_fmt_vid_out, |
| |
| .vidioc_s_fmt_vid_cap = s5p_jpeg_s_fmt_vid_cap, |
| .vidioc_s_fmt_vid_out = s5p_jpeg_s_fmt_vid_out, |
| |
| .vidioc_reqbufs = s5p_jpeg_reqbufs, |
| .vidioc_querybuf = s5p_jpeg_querybuf, |
| |
| .vidioc_qbuf = s5p_jpeg_qbuf, |
| .vidioc_dqbuf = s5p_jpeg_dqbuf, |
| |
| .vidioc_streamon = s5p_jpeg_streamon, |
| .vidioc_streamoff = s5p_jpeg_streamoff, |
| |
| .vidioc_g_selection = s5p_jpeg_g_selection, |
| }; |
| |
| /* |
| * ============================================================================ |
| * mem2mem callbacks |
| * ============================================================================ |
| */ |
| |
| static void s5p_jpeg_device_run(void *priv) |
| { |
| struct s5p_jpeg_ctx *ctx = priv; |
| struct s5p_jpeg *jpeg = ctx->jpeg; |
| struct vb2_buffer *src_buf, *dst_buf; |
| unsigned long src_addr, dst_addr; |
| |
| src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx); |
| dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); |
| src_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0); |
| dst_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0); |
| |
| jpeg_reset(jpeg->regs); |
| jpeg_poweron(jpeg->regs); |
| jpeg_proc_mode(jpeg->regs, ctx->mode); |
| if (ctx->mode == S5P_JPEG_ENCODE) { |
| if (ctx->out_q.fmt->fourcc == V4L2_PIX_FMT_RGB565) |
| jpeg_input_raw_mode(jpeg->regs, S5P_JPEG_RAW_IN_565); |
| else |
| jpeg_input_raw_mode(jpeg->regs, S5P_JPEG_RAW_IN_422); |
| jpeg_subsampling_mode(jpeg->regs, ctx->subsampling); |
| jpeg_dri(jpeg->regs, ctx->restart_interval); |
| jpeg_x(jpeg->regs, ctx->out_q.w); |
| jpeg_y(jpeg->regs, ctx->out_q.h); |
| jpeg_imgadr(jpeg->regs, src_addr); |
| jpeg_jpgadr(jpeg->regs, dst_addr); |
| |
| /* ultimately comes from sizeimage from userspace */ |
| jpeg_enc_stream_int(jpeg->regs, ctx->cap_q.size); |
| |
| /* JPEG RGB to YCbCr conversion matrix */ |
| jpeg_coef(jpeg->regs, 1, 1, S5P_JPEG_COEF11); |
| jpeg_coef(jpeg->regs, 1, 2, S5P_JPEG_COEF12); |
| jpeg_coef(jpeg->regs, 1, 3, S5P_JPEG_COEF13); |
| jpeg_coef(jpeg->regs, 2, 1, S5P_JPEG_COEF21); |
| jpeg_coef(jpeg->regs, 2, 2, S5P_JPEG_COEF22); |
| jpeg_coef(jpeg->regs, 2, 3, S5P_JPEG_COEF23); |
| jpeg_coef(jpeg->regs, 3, 1, S5P_JPEG_COEF31); |
| jpeg_coef(jpeg->regs, 3, 2, S5P_JPEG_COEF32); |
| jpeg_coef(jpeg->regs, 3, 3, S5P_JPEG_COEF33); |
| |
| /* |
| * JPEG IP allows storing 4 quantization tables |
| * We fill table 0 for luma and table 1 for chroma |
| */ |
| jpeg_set_qtbl_lum(jpeg->regs, ctx->compr_quality); |
| jpeg_set_qtbl_chr(jpeg->regs, ctx->compr_quality); |
| /* use table 0 for Y */ |
| jpeg_qtbl(jpeg->regs, 1, 0); |
| /* use table 1 for Cb and Cr*/ |
| jpeg_qtbl(jpeg->regs, 2, 1); |
| jpeg_qtbl(jpeg->regs, 3, 1); |
| |
| /* Y, Cb, Cr use Huffman table 0 */ |
| jpeg_htbl_ac(jpeg->regs, 1); |
| jpeg_htbl_dc(jpeg->regs, 1); |
| jpeg_htbl_ac(jpeg->regs, 2); |
| jpeg_htbl_dc(jpeg->regs, 2); |
| jpeg_htbl_ac(jpeg->regs, 3); |
| jpeg_htbl_dc(jpeg->regs, 3); |
| } else { /* S5P_JPEG_DECODE */ |
| jpeg_rst_int_enable(jpeg->regs, true); |
| jpeg_data_num_int_enable(jpeg->regs, true); |
| jpeg_final_mcu_num_int_enable(jpeg->regs, true); |
| if (ctx->cap_q.fmt->fourcc == V4L2_PIX_FMT_YUYV) |
| jpeg_outform_raw(jpeg->regs, S5P_JPEG_RAW_OUT_422); |
| else |
| jpeg_outform_raw(jpeg->regs, S5P_JPEG_RAW_OUT_420); |
| jpeg_jpgadr(jpeg->regs, src_addr); |
| jpeg_imgadr(jpeg->regs, dst_addr); |
| } |
| |
| jpeg_start(jpeg->regs); |
| } |
| |
| static int s5p_jpeg_job_ready(void *priv) |
| { |
| struct s5p_jpeg_ctx *ctx = priv; |
| |
| if (ctx->mode == S5P_JPEG_DECODE) |
| return ctx->hdr_parsed; |
| return 1; |
| } |
| |
| static void s5p_jpeg_job_abort(void *priv) |
| { |
| } |
| |
| static struct v4l2_m2m_ops s5p_jpeg_m2m_ops = { |
| .device_run = s5p_jpeg_device_run, |
| .job_ready = s5p_jpeg_job_ready, |
| .job_abort = s5p_jpeg_job_abort, |
| }; |
| |
| /* |
| * ============================================================================ |
| * Queue operations |
| * ============================================================================ |
| */ |
| |
| static int s5p_jpeg_queue_setup(struct vb2_queue *vq, |
| const struct v4l2_format *fmt, |
| unsigned int *nbuffers, unsigned int *nplanes, |
| unsigned int sizes[], void *alloc_ctxs[]) |
| { |
| struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vq); |
| struct s5p_jpeg_q_data *q_data = NULL; |
| unsigned int size, count = *nbuffers; |
| |
| q_data = get_q_data(ctx, vq->type); |
| BUG_ON(q_data == NULL); |
| |
| size = q_data->size; |
| |
| /* |
| * header is parsed during decoding and parsed information stored |
| * in the context so we do not allow another buffer to overwrite it |
| */ |
| if (ctx->mode == S5P_JPEG_DECODE) |
| count = 1; |
| |
| *nbuffers = count; |
| *nplanes = 1; |
| sizes[0] = size; |
| alloc_ctxs[0] = ctx->jpeg->alloc_ctx; |
| |
| return 0; |
| } |
| |
| static int s5p_jpeg_buf_prepare(struct vb2_buffer *vb) |
| { |
| struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
| struct s5p_jpeg_q_data *q_data = NULL; |
| |
| q_data = get_q_data(ctx, vb->vb2_queue->type); |
| BUG_ON(q_data == NULL); |
| |
| if (vb2_plane_size(vb, 0) < q_data->size) { |
| pr_err("%s data will not fit into plane (%lu < %lu)\n", |
| __func__, vb2_plane_size(vb, 0), |
| (long)q_data->size); |
| return -EINVAL; |
| } |
| |
| vb2_set_plane_payload(vb, 0, q_data->size); |
| |
| return 0; |
| } |
| |
| static void s5p_jpeg_buf_queue(struct vb2_buffer *vb) |
| { |
| struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
| |
| if (ctx->mode == S5P_JPEG_DECODE && |
| vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { |
| struct s5p_jpeg_q_data tmp, *q_data; |
| ctx->hdr_parsed = s5p_jpeg_parse_hdr(&tmp, |
| (unsigned long)vb2_plane_vaddr(vb, 0), |
| min((unsigned long)ctx->out_q.size, |
| vb2_get_plane_payload(vb, 0))); |
| if (!ctx->hdr_parsed) { |
| vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); |
| return; |
| } |
| |
| q_data = &ctx->out_q; |
| q_data->w = tmp.w; |
| q_data->h = tmp.h; |
| |
| q_data = &ctx->cap_q; |
| q_data->w = tmp.w; |
| q_data->h = tmp.h; |
| |
| jpeg_bound_align_image(&q_data->w, S5P_JPEG_MIN_WIDTH, |
| S5P_JPEG_MAX_WIDTH, q_data->fmt->h_align, |
| &q_data->h, S5P_JPEG_MIN_HEIGHT, |
| S5P_JPEG_MAX_HEIGHT, q_data->fmt->v_align |
| ); |
| q_data->size = q_data->w * q_data->h * q_data->fmt->depth >> 3; |
| } |
| if (ctx->m2m_ctx) |
| v4l2_m2m_buf_queue(ctx->m2m_ctx, vb); |
| } |
| |
| static void s5p_jpeg_wait_prepare(struct vb2_queue *vq) |
| { |
| struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vq); |
| |
| mutex_unlock(&ctx->jpeg->lock); |
| } |
| |
| static void s5p_jpeg_wait_finish(struct vb2_queue *vq) |
| { |
| struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vq); |
| |
| mutex_lock(&ctx->jpeg->lock); |
| } |
| |
| static int s5p_jpeg_start_streaming(struct vb2_queue *q, unsigned int count) |
| { |
| struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(q); |
| int ret; |
| |
| ret = pm_runtime_get_sync(ctx->jpeg->dev); |
| |
| return ret > 0 ? 0 : ret; |
| } |
| |
| static int s5p_jpeg_stop_streaming(struct vb2_queue *q) |
| { |
| struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(q); |
| |
| pm_runtime_put(ctx->jpeg->dev); |
| |
| return 0; |
| } |
| |
| static struct vb2_ops s5p_jpeg_qops = { |
| .queue_setup = s5p_jpeg_queue_setup, |
| .buf_prepare = s5p_jpeg_buf_prepare, |
| .buf_queue = s5p_jpeg_buf_queue, |
| .wait_prepare = s5p_jpeg_wait_prepare, |
| .wait_finish = s5p_jpeg_wait_finish, |
| .start_streaming = s5p_jpeg_start_streaming, |
| .stop_streaming = s5p_jpeg_stop_streaming, |
| }; |
| |
| static int queue_init(void *priv, struct vb2_queue *src_vq, |
| struct vb2_queue *dst_vq) |
| { |
| struct s5p_jpeg_ctx *ctx = priv; |
| int ret; |
| |
| memset(src_vq, 0, sizeof(*src_vq)); |
| src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
| src_vq->io_modes = VB2_MMAP | VB2_USERPTR; |
| src_vq->drv_priv = ctx; |
| src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); |
| src_vq->ops = &s5p_jpeg_qops; |
| src_vq->mem_ops = &vb2_dma_contig_memops; |
| |
| ret = vb2_queue_init(src_vq); |
| if (ret) |
| return ret; |
| |
| memset(dst_vq, 0, sizeof(*dst_vq)); |
| dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| dst_vq->io_modes = VB2_MMAP | VB2_USERPTR; |
| dst_vq->drv_priv = ctx; |
| dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); |
| dst_vq->ops = &s5p_jpeg_qops; |
| dst_vq->mem_ops = &vb2_dma_contig_memops; |
| |
| return vb2_queue_init(dst_vq); |
| } |
| |
| /* |
| * ============================================================================ |
| * ISR |
| * ============================================================================ |
| */ |
| |
| static irqreturn_t s5p_jpeg_irq(int irq, void *dev_id) |
| { |
| struct s5p_jpeg *jpeg = dev_id; |
| struct s5p_jpeg_ctx *curr_ctx; |
| struct vb2_buffer *src_buf, *dst_buf; |
| unsigned long payload_size = 0; |
| enum vb2_buffer_state state = VB2_BUF_STATE_DONE; |
| bool enc_jpeg_too_large = false; |
| bool timer_elapsed = false; |
| bool op_completed = false; |
| |
| spin_lock(&jpeg->slock); |
| |
| curr_ctx = v4l2_m2m_get_curr_priv(jpeg->m2m_dev); |
| |
| src_buf = v4l2_m2m_src_buf_remove(curr_ctx->m2m_ctx); |
| dst_buf = v4l2_m2m_dst_buf_remove(curr_ctx->m2m_ctx); |
| |
| if (curr_ctx->mode == S5P_JPEG_ENCODE) |
| enc_jpeg_too_large = jpeg_enc_stream_stat(jpeg->regs); |
| timer_elapsed = jpeg_timer_stat(jpeg->regs); |
| op_completed = jpeg_result_stat_ok(jpeg->regs); |
| if (curr_ctx->mode == S5P_JPEG_DECODE) |
| op_completed = op_completed && jpeg_stream_stat_ok(jpeg->regs); |
| |
| if (enc_jpeg_too_large) { |
| state = VB2_BUF_STATE_ERROR; |
| jpeg_clear_enc_stream_stat(jpeg->regs); |
| } else if (timer_elapsed) { |
| state = VB2_BUF_STATE_ERROR; |
| jpeg_clear_timer_stat(jpeg->regs); |
| } else if (!op_completed) { |
| state = VB2_BUF_STATE_ERROR; |
| } else { |
| payload_size = jpeg_compressed_size(jpeg->regs); |
| } |
| |
| v4l2_m2m_buf_done(src_buf, state); |
| if (curr_ctx->mode == S5P_JPEG_ENCODE) |
| vb2_set_plane_payload(dst_buf, 0, payload_size); |
| v4l2_m2m_buf_done(dst_buf, state); |
| v4l2_m2m_job_finish(jpeg->m2m_dev, curr_ctx->m2m_ctx); |
| |
| curr_ctx->subsampling = jpeg_get_subsampling_mode(jpeg->regs); |
| spin_unlock(&jpeg->slock); |
| |
| jpeg_clear_int(jpeg->regs); |
| |
| return IRQ_HANDLED; |
| } |
| |
| /* |
| * ============================================================================ |
| * Driver basic infrastructure |
| * ============================================================================ |
| */ |
| |
| static int s5p_jpeg_probe(struct platform_device *pdev) |
| { |
| struct s5p_jpeg *jpeg; |
| struct resource *res; |
| int ret; |
| |
| /* JPEG IP abstraction struct */ |
| jpeg = devm_kzalloc(&pdev->dev, sizeof(struct s5p_jpeg), GFP_KERNEL); |
| if (!jpeg) |
| return -ENOMEM; |
| |
| mutex_init(&jpeg->lock); |
| spin_lock_init(&jpeg->slock); |
| jpeg->dev = &pdev->dev; |
| |
| /* memory-mapped registers */ |
| res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| |
| jpeg->regs = devm_request_and_ioremap(&pdev->dev, res); |
| if (jpeg->regs == NULL) { |
| dev_err(&pdev->dev, "Failed to obtain io memory\n"); |
| return -ENOENT; |
| } |
| |
| /* interrupt service routine registration */ |
| jpeg->irq = ret = platform_get_irq(pdev, 0); |
| if (ret < 0) { |
| dev_err(&pdev->dev, "cannot find IRQ\n"); |
| return ret; |
| } |
| |
| ret = devm_request_irq(&pdev->dev, jpeg->irq, s5p_jpeg_irq, 0, |
| dev_name(&pdev->dev), jpeg); |
| if (ret) { |
| dev_err(&pdev->dev, "cannot claim IRQ %d\n", jpeg->irq); |
| return ret; |
| } |
| |
| /* clocks */ |
| jpeg->clk = clk_get(&pdev->dev, "jpeg"); |
| if (IS_ERR(jpeg->clk)) { |
| dev_err(&pdev->dev, "cannot get clock\n"); |
| ret = PTR_ERR(jpeg->clk); |
| return ret; |
| } |
| dev_dbg(&pdev->dev, "clock source %p\n", jpeg->clk); |
| clk_enable(jpeg->clk); |
| |
| /* v4l2 device */ |
| ret = v4l2_device_register(&pdev->dev, &jpeg->v4l2_dev); |
| if (ret) { |
| dev_err(&pdev->dev, "Failed to register v4l2 device\n"); |
| goto clk_get_rollback; |
| } |
| |
| /* mem2mem device */ |
| jpeg->m2m_dev = v4l2_m2m_init(&s5p_jpeg_m2m_ops); |
| if (IS_ERR(jpeg->m2m_dev)) { |
| v4l2_err(&jpeg->v4l2_dev, "Failed to init mem2mem device\n"); |
| ret = PTR_ERR(jpeg->m2m_dev); |
| goto device_register_rollback; |
| } |
| |
| jpeg->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); |
| if (IS_ERR(jpeg->alloc_ctx)) { |
| v4l2_err(&jpeg->v4l2_dev, "Failed to init memory allocator\n"); |
| ret = PTR_ERR(jpeg->alloc_ctx); |
| goto m2m_init_rollback; |
| } |
| |
| /* JPEG encoder /dev/videoX node */ |
| jpeg->vfd_encoder = video_device_alloc(); |
| if (!jpeg->vfd_encoder) { |
| v4l2_err(&jpeg->v4l2_dev, "Failed to allocate video device\n"); |
| ret = -ENOMEM; |
| goto vb2_allocator_rollback; |
| } |
| strlcpy(jpeg->vfd_encoder->name, S5P_JPEG_M2M_NAME, |
| sizeof(jpeg->vfd_encoder->name)); |
| jpeg->vfd_encoder->fops = &s5p_jpeg_fops; |
| jpeg->vfd_encoder->ioctl_ops = &s5p_jpeg_ioctl_ops; |
| jpeg->vfd_encoder->minor = -1; |
| jpeg->vfd_encoder->release = video_device_release; |
| jpeg->vfd_encoder->lock = &jpeg->lock; |
| jpeg->vfd_encoder->v4l2_dev = &jpeg->v4l2_dev; |
| |
| ret = video_register_device(jpeg->vfd_encoder, VFL_TYPE_GRABBER, -1); |
| if (ret) { |
| v4l2_err(&jpeg->v4l2_dev, "Failed to register video device\n"); |
| goto enc_vdev_alloc_rollback; |
| } |
| |
| video_set_drvdata(jpeg->vfd_encoder, jpeg); |
| v4l2_info(&jpeg->v4l2_dev, |
| "encoder device registered as /dev/video%d\n", |
| jpeg->vfd_encoder->num); |
| |
| /* JPEG decoder /dev/videoX node */ |
| jpeg->vfd_decoder = video_device_alloc(); |
| if (!jpeg->vfd_decoder) { |
| v4l2_err(&jpeg->v4l2_dev, "Failed to allocate video device\n"); |
| ret = -ENOMEM; |
| goto enc_vdev_register_rollback; |
| } |
| strlcpy(jpeg->vfd_decoder->name, S5P_JPEG_M2M_NAME, |
| sizeof(jpeg->vfd_decoder->name)); |
| jpeg->vfd_decoder->fops = &s5p_jpeg_fops; |
| jpeg->vfd_decoder->ioctl_ops = &s5p_jpeg_ioctl_ops; |
| jpeg->vfd_decoder->minor = -1; |
| jpeg->vfd_decoder->release = video_device_release; |
| jpeg->vfd_decoder->lock = &jpeg->lock; |
| jpeg->vfd_decoder->v4l2_dev = &jpeg->v4l2_dev; |
| |
| ret = video_register_device(jpeg->vfd_decoder, VFL_TYPE_GRABBER, -1); |
| if (ret) { |
| v4l2_err(&jpeg->v4l2_dev, "Failed to register video device\n"); |
| goto dec_vdev_alloc_rollback; |
| } |
| |
| video_set_drvdata(jpeg->vfd_decoder, jpeg); |
| v4l2_info(&jpeg->v4l2_dev, |
| "decoder device registered as /dev/video%d\n", |
| jpeg->vfd_decoder->num); |
| |
| /* final statements & power management */ |
| platform_set_drvdata(pdev, jpeg); |
| |
| pm_runtime_enable(&pdev->dev); |
| |
| v4l2_info(&jpeg->v4l2_dev, "Samsung S5P JPEG codec\n"); |
| |
| return 0; |
| |
| dec_vdev_alloc_rollback: |
| video_device_release(jpeg->vfd_decoder); |
| |
| enc_vdev_register_rollback: |
| video_unregister_device(jpeg->vfd_encoder); |
| |
| enc_vdev_alloc_rollback: |
| video_device_release(jpeg->vfd_encoder); |
| |
| vb2_allocator_rollback: |
| vb2_dma_contig_cleanup_ctx(jpeg->alloc_ctx); |
| |
| m2m_init_rollback: |
| v4l2_m2m_release(jpeg->m2m_dev); |
| |
| device_register_rollback: |
| v4l2_device_unregister(&jpeg->v4l2_dev); |
| |
| clk_get_rollback: |
| clk_disable(jpeg->clk); |
| clk_put(jpeg->clk); |
| |
| return ret; |
| } |
| |
| static int s5p_jpeg_remove(struct platform_device *pdev) |
| { |
| struct s5p_jpeg *jpeg = platform_get_drvdata(pdev); |
| |
| pm_runtime_disable(jpeg->dev); |
| |
| video_unregister_device(jpeg->vfd_decoder); |
| video_device_release(jpeg->vfd_decoder); |
| video_unregister_device(jpeg->vfd_encoder); |
| video_device_release(jpeg->vfd_encoder); |
| vb2_dma_contig_cleanup_ctx(jpeg->alloc_ctx); |
| v4l2_m2m_release(jpeg->m2m_dev); |
| v4l2_device_unregister(&jpeg->v4l2_dev); |
| |
| clk_disable(jpeg->clk); |
| clk_put(jpeg->clk); |
| |
| return 0; |
| } |
| |
| static int s5p_jpeg_runtime_suspend(struct device *dev) |
| { |
| return 0; |
| } |
| |
| static int s5p_jpeg_runtime_resume(struct device *dev) |
| { |
| struct s5p_jpeg *jpeg = dev_get_drvdata(dev); |
| /* |
| * JPEG IP allows storing two Huffman tables for each component |
| * We fill table 0 for each component |
| */ |
| jpeg_set_hdctbl(jpeg->regs); |
| jpeg_set_hdctblg(jpeg->regs); |
| jpeg_set_hactbl(jpeg->regs); |
| jpeg_set_hactblg(jpeg->regs); |
| return 0; |
| } |
| |
| static const struct dev_pm_ops s5p_jpeg_pm_ops = { |
| .runtime_suspend = s5p_jpeg_runtime_suspend, |
| .runtime_resume = s5p_jpeg_runtime_resume, |
| }; |
| |
| static struct platform_driver s5p_jpeg_driver = { |
| .probe = s5p_jpeg_probe, |
| .remove = s5p_jpeg_remove, |
| .driver = { |
| .owner = THIS_MODULE, |
| .name = S5P_JPEG_M2M_NAME, |
| .pm = &s5p_jpeg_pm_ops, |
| }, |
| }; |
| |
| module_platform_driver(s5p_jpeg_driver); |
| |
| MODULE_AUTHOR("Andrzej Pietrasiewicz <andrzej.p@samsung.com>"); |
| MODULE_DESCRIPTION("Samsung JPEG codec driver"); |
| MODULE_LICENSE("GPL"); |
| |