+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * sh-mobile VEU mem2mem driver
- *
- * Copyright (C) 2012 Renesas Electronics Corporation
- * Author: Guennadi Liakhovetski, <g.liakhovetski@gmx.de>
- * Copyright (C) 2008 Magnus Damm
- */
-
-#include <linux/err.h>
-#include <linux/fs.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include <linux/videodev2.h>
-
-#include <media/v4l2-dev.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-mem2mem.h>
-#include <media/v4l2-image-sizes.h>
-#include <media/videobuf2-dma-contig.h>
-
-#define VEU_STR 0x00 /* start register */
-#define VEU_SWR 0x10 /* src: line length */
-#define VEU_SSR 0x14 /* src: image size */
-#define VEU_SAYR 0x18 /* src: y/rgb plane address */
-#define VEU_SACR 0x1c /* src: c plane address */
-#define VEU_BSSR 0x20 /* bundle mode register */
-#define VEU_EDWR 0x30 /* dst: line length */
-#define VEU_DAYR 0x34 /* dst: y/rgb plane address */
-#define VEU_DACR 0x38 /* dst: c plane address */
-#define VEU_TRCR 0x50 /* transform control */
-#define VEU_RFCR 0x54 /* resize scale */
-#define VEU_RFSR 0x58 /* resize clip */
-#define VEU_ENHR 0x5c /* enhance */
-#define VEU_FMCR 0x70 /* filter mode */
-#define VEU_VTCR 0x74 /* lowpass vertical */
-#define VEU_HTCR 0x78 /* lowpass horizontal */
-#define VEU_APCR 0x80 /* color match */
-#define VEU_ECCR 0x84 /* color replace */
-#define VEU_AFXR 0x90 /* fixed mode */
-#define VEU_SWPR 0x94 /* swap */
-#define VEU_EIER 0xa0 /* interrupt mask */
-#define VEU_EVTR 0xa4 /* interrupt event */
-#define VEU_STAR 0xb0 /* status */
-#define VEU_BSRR 0xb4 /* reset */
-
-#define VEU_MCR00 0x200 /* color conversion matrix coefficient 00 */
-#define VEU_MCR01 0x204 /* color conversion matrix coefficient 01 */
-#define VEU_MCR02 0x208 /* color conversion matrix coefficient 02 */
-#define VEU_MCR10 0x20c /* color conversion matrix coefficient 10 */
-#define VEU_MCR11 0x210 /* color conversion matrix coefficient 11 */
-#define VEU_MCR12 0x214 /* color conversion matrix coefficient 12 */
-#define VEU_MCR20 0x218 /* color conversion matrix coefficient 20 */
-#define VEU_MCR21 0x21c /* color conversion matrix coefficient 21 */
-#define VEU_MCR22 0x220 /* color conversion matrix coefficient 22 */
-#define VEU_COFFR 0x224 /* color conversion offset */
-#define VEU_CBR 0x228 /* color conversion clip */
-
-/*
- * 4092x4092 max size is the normal case. In some cases it can be reduced to
- * 2048x2048, in other cases it can be 4092x8188 or even 8188x8188.
- */
-#define MAX_W 4092
-#define MAX_H 4092
-#define MIN_W 8
-#define MIN_H 8
-#define ALIGN_W 4
-
-/* 3 buffers of 2048 x 1536 - 3 megapixels @ 16bpp */
-#define VIDEO_MEM_LIMIT ALIGN(2048 * 1536 * 2 * 3, 1024 * 1024)
-
-#define MEM2MEM_DEF_TRANSLEN 1
-
-struct sh_veu_dev;
-
-struct sh_veu_file {
- struct v4l2_fh fh;
- struct sh_veu_dev *veu_dev;
- bool cfg_needed;
-};
-
-struct sh_veu_format {
- u32 fourcc;
- unsigned int depth;
- unsigned int ydepth;
-};
-
-/* video data format */
-struct sh_veu_vfmt {
- /* Replace with v4l2_rect */
- struct v4l2_rect frame;
- unsigned int bytesperline;
- unsigned int offset_y;
- unsigned int offset_c;
- const struct sh_veu_format *fmt;
-};
-
-struct sh_veu_dev {
- struct v4l2_device v4l2_dev;
- struct video_device vdev;
- struct v4l2_m2m_dev *m2m_dev;
- struct device *dev;
- struct v4l2_m2m_ctx *m2m_ctx;
- struct sh_veu_vfmt vfmt_out;
- struct sh_veu_vfmt vfmt_in;
- /* Only single user per direction so far */
- struct sh_veu_file *capture;
- struct sh_veu_file *output;
- struct mutex fop_lock;
- void __iomem *base;
- spinlock_t lock;
- bool is_2h;
- unsigned int xaction;
- bool aborting;
-};
-
-enum sh_veu_fmt_idx {
- SH_VEU_FMT_NV12,
- SH_VEU_FMT_NV16,
- SH_VEU_FMT_NV24,
- SH_VEU_FMT_RGB332,
- SH_VEU_FMT_RGB444,
- SH_VEU_FMT_RGB565,
- SH_VEU_FMT_RGB666,
- SH_VEU_FMT_RGB24,
-};
-
-#define DEFAULT_IN_WIDTH VGA_WIDTH
-#define DEFAULT_IN_HEIGHT VGA_HEIGHT
-#define DEFAULT_IN_FMTIDX SH_VEU_FMT_NV12
-#define DEFAULT_OUT_WIDTH VGA_WIDTH
-#define DEFAULT_OUT_HEIGHT VGA_HEIGHT
-#define DEFAULT_OUT_FMTIDX SH_VEU_FMT_RGB565
-
-/*
- * Alignment: Y-plane should be 4-byte aligned for NV12 and NV16, and 8-byte
- * aligned for NV24.
- */
-static const struct sh_veu_format sh_veu_fmt[] = {
- [SH_VEU_FMT_NV12] = { .ydepth = 8, .depth = 12, .fourcc = V4L2_PIX_FMT_NV12 },
- [SH_VEU_FMT_NV16] = { .ydepth = 8, .depth = 16, .fourcc = V4L2_PIX_FMT_NV16 },
- [SH_VEU_FMT_NV24] = { .ydepth = 8, .depth = 24, .fourcc = V4L2_PIX_FMT_NV24 },
- [SH_VEU_FMT_RGB332] = { .ydepth = 8, .depth = 8, .fourcc = V4L2_PIX_FMT_RGB332 },
- [SH_VEU_FMT_RGB444] = { .ydepth = 16, .depth = 16, .fourcc = V4L2_PIX_FMT_RGB444 },
- [SH_VEU_FMT_RGB565] = { .ydepth = 16, .depth = 16, .fourcc = V4L2_PIX_FMT_RGB565 },
- [SH_VEU_FMT_RGB666] = { .ydepth = 32, .depth = 32, .fourcc = V4L2_PIX_FMT_BGR666 },
- [SH_VEU_FMT_RGB24] = { .ydepth = 24, .depth = 24, .fourcc = V4L2_PIX_FMT_RGB24 },
-};
-
-#define DEFAULT_IN_VFMT (struct sh_veu_vfmt){ \
- .frame = { \
- .width = VGA_WIDTH, \
- .height = VGA_HEIGHT, \
- }, \
- .bytesperline = (VGA_WIDTH * sh_veu_fmt[DEFAULT_IN_FMTIDX].ydepth) >> 3, \
- .fmt = &sh_veu_fmt[DEFAULT_IN_FMTIDX], \
-}
-
-#define DEFAULT_OUT_VFMT (struct sh_veu_vfmt){ \
- .frame = { \
- .width = VGA_WIDTH, \
- .height = VGA_HEIGHT, \
- }, \
- .bytesperline = (VGA_WIDTH * sh_veu_fmt[DEFAULT_OUT_FMTIDX].ydepth) >> 3, \
- .fmt = &sh_veu_fmt[DEFAULT_OUT_FMTIDX], \
-}
-
-/*
- * TODO: add support for further output formats:
- * SH_VEU_FMT_NV12,
- * SH_VEU_FMT_NV16,
- * SH_VEU_FMT_NV24,
- * SH_VEU_FMT_RGB332,
- * SH_VEU_FMT_RGB444,
- * SH_VEU_FMT_RGB666,
- * SH_VEU_FMT_RGB24,
- */
-
-static const int sh_veu_fmt_out[] = {
- SH_VEU_FMT_RGB565,
-};
-
-/*
- * TODO: add support for further input formats:
- * SH_VEU_FMT_NV16,
- * SH_VEU_FMT_NV24,
- * SH_VEU_FMT_RGB565,
- * SH_VEU_FMT_RGB666,
- * SH_VEU_FMT_RGB24,
- */
-static const int sh_veu_fmt_in[] = {
- SH_VEU_FMT_NV12,
-};
-
-static enum v4l2_colorspace sh_veu_4cc2cspace(u32 fourcc)
-{
- switch (fourcc) {
- default:
- BUG();
- case V4L2_PIX_FMT_NV12:
- case V4L2_PIX_FMT_NV16:
- case V4L2_PIX_FMT_NV24:
- return V4L2_COLORSPACE_SMPTE170M;
- case V4L2_PIX_FMT_RGB332:
- case V4L2_PIX_FMT_RGB444:
- case V4L2_PIX_FMT_RGB565:
- case V4L2_PIX_FMT_BGR666:
- case V4L2_PIX_FMT_RGB24:
- return V4L2_COLORSPACE_SRGB;
- }
-}
-
-static u32 sh_veu_reg_read(struct sh_veu_dev *veu, unsigned int reg)
-{
- return ioread32(veu->base + reg);
-}
-
-static void sh_veu_reg_write(struct sh_veu_dev *veu, unsigned int reg,
- u32 value)
-{
- iowrite32(value, veu->base + reg);
-}
-
- /* ========== mem2mem callbacks ========== */
-
-static void sh_veu_job_abort(void *priv)
-{
- struct sh_veu_dev *veu = priv;
-
- /* Will cancel the transaction in the next interrupt handler */
- veu->aborting = true;
-}
-
-static void sh_veu_process(struct sh_veu_dev *veu,
- struct vb2_buffer *src_buf,
- struct vb2_buffer *dst_buf)
-{
- dma_addr_t addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
-
- sh_veu_reg_write(veu, VEU_DAYR, addr + veu->vfmt_out.offset_y);
- sh_veu_reg_write(veu, VEU_DACR, veu->vfmt_out.offset_c ?
- addr + veu->vfmt_out.offset_c : 0);
- dev_dbg(veu->dev, "%s(): dst base %lx, y: %x, c: %x\n", __func__,
- (unsigned long)addr,
- veu->vfmt_out.offset_y, veu->vfmt_out.offset_c);
-
- addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
- sh_veu_reg_write(veu, VEU_SAYR, addr + veu->vfmt_in.offset_y);
- sh_veu_reg_write(veu, VEU_SACR, veu->vfmt_in.offset_c ?
- addr + veu->vfmt_in.offset_c : 0);
- dev_dbg(veu->dev, "%s(): src base %lx, y: %x, c: %x\n", __func__,
- (unsigned long)addr,
- veu->vfmt_in.offset_y, veu->vfmt_in.offset_c);
-
- sh_veu_reg_write(veu, VEU_STR, 1);
-
- sh_veu_reg_write(veu, VEU_EIER, 1); /* enable interrupt in VEU */
-}
-
-/*
- * sh_veu_device_run() - prepares and starts the device
- *
- * This will be called by the framework when it decides to schedule a particular
- * instance.
- */
-static void sh_veu_device_run(void *priv)
-{
- struct sh_veu_dev *veu = priv;
- struct vb2_v4l2_buffer *src_buf, *dst_buf;
-
- src_buf = v4l2_m2m_next_src_buf(veu->m2m_ctx);
- dst_buf = v4l2_m2m_next_dst_buf(veu->m2m_ctx);
-
- if (src_buf && dst_buf)
- sh_veu_process(veu, &src_buf->vb2_buf, &dst_buf->vb2_buf);
-}
-
- /* ========== video ioctls ========== */
-
-static bool sh_veu_is_streamer(struct sh_veu_dev *veu, struct sh_veu_file *veu_file,
- enum v4l2_buf_type type)
-{
- return (type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
- veu_file == veu->capture) ||
- (type == V4L2_BUF_TYPE_VIDEO_OUTPUT &&
- veu_file == veu->output);
-}
-
-static int sh_veu_queue_init(void *priv, struct vb2_queue *src_vq,
- struct vb2_queue *dst_vq);
-
-/*
- * It is not unusual to have video nodes open()ed multiple times. While some
- * V4L2 operations are non-intrusive, like querying formats and various
- * parameters, others, like setting formats, starting and stopping streaming,
- * queuing and dequeuing buffers, directly affect hardware configuration and /
- * or execution. This function verifies availability of the requested interface
- * and, if available, reserves it for the requesting user.
- */
-static int sh_veu_stream_init(struct sh_veu_dev *veu, struct sh_veu_file *veu_file,
- enum v4l2_buf_type type)
-{
- struct sh_veu_file **stream;
-
- switch (type) {
- case V4L2_BUF_TYPE_VIDEO_CAPTURE:
- stream = &veu->capture;
- break;
- case V4L2_BUF_TYPE_VIDEO_OUTPUT:
- stream = &veu->output;
- break;
- default:
- return -EINVAL;
- }
-
- if (*stream == veu_file)
- return 0;
-
- if (*stream)
- return -EBUSY;
-
- *stream = veu_file;
-
- return 0;
-}
-
-static int sh_veu_context_init(struct sh_veu_dev *veu)
-{
- if (veu->m2m_ctx)
- return 0;
-
- veu->m2m_ctx = v4l2_m2m_ctx_init(veu->m2m_dev, veu,
- sh_veu_queue_init);
-
- return PTR_ERR_OR_ZERO(veu->m2m_ctx);
-}
-
-static int sh_veu_querycap(struct file *file, void *priv,
- struct v4l2_capability *cap)
-{
- strscpy(cap->driver, "sh-veu", sizeof(cap->driver));
- strscpy(cap->card, "sh-mobile VEU", sizeof(cap->card));
- strscpy(cap->bus_info, "platform:sh-veu", sizeof(cap->bus_info));
- return 0;
-}
-
-static int sh_veu_enum_fmt(struct v4l2_fmtdesc *f, const int *fmt, int fmt_num)
-{
- if (f->index >= fmt_num)
- return -EINVAL;
-
- f->pixelformat = sh_veu_fmt[fmt[f->index]].fourcc;
- return 0;
-}
-
-static int sh_veu_enum_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_fmtdesc *f)
-{
- return sh_veu_enum_fmt(f, sh_veu_fmt_out, ARRAY_SIZE(sh_veu_fmt_out));
-}
-
-static int sh_veu_enum_fmt_vid_out(struct file *file, void *priv,
- struct v4l2_fmtdesc *f)
-{
- return sh_veu_enum_fmt(f, sh_veu_fmt_in, ARRAY_SIZE(sh_veu_fmt_in));
-}
-
-static struct sh_veu_vfmt *sh_veu_get_vfmt(struct sh_veu_dev *veu,
- enum v4l2_buf_type type)
-{
- switch (type) {
- case V4L2_BUF_TYPE_VIDEO_CAPTURE:
- return &veu->vfmt_out;
- case V4L2_BUF_TYPE_VIDEO_OUTPUT:
- return &veu->vfmt_in;
- default:
- return NULL;
- }
-}
-
-static int sh_veu_g_fmt(struct sh_veu_file *veu_file, struct v4l2_format *f)
-{
- struct v4l2_pix_format *pix = &f->fmt.pix;
- struct sh_veu_dev *veu = veu_file->veu_dev;
- struct sh_veu_vfmt *vfmt;
-
- vfmt = sh_veu_get_vfmt(veu, f->type);
-
- pix->width = vfmt->frame.width;
- pix->height = vfmt->frame.height;
- pix->field = V4L2_FIELD_NONE;
- pix->pixelformat = vfmt->fmt->fourcc;
- pix->colorspace = sh_veu_4cc2cspace(pix->pixelformat);
- pix->bytesperline = vfmt->bytesperline;
- pix->sizeimage = vfmt->bytesperline * pix->height *
- vfmt->fmt->depth / vfmt->fmt->ydepth;
- dev_dbg(veu->dev, "%s(): type: %d, size %u @ %ux%u, fmt %x\n", __func__,
- f->type, pix->sizeimage, pix->width, pix->height, pix->pixelformat);
-
- return 0;
-}
-
-static int sh_veu_g_fmt_vid_out(struct file *file, void *priv,
- struct v4l2_format *f)
-{
- return sh_veu_g_fmt(priv, f);
-}
-
-static int sh_veu_g_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_format *f)
-{
- return sh_veu_g_fmt(priv, f);
-}
-
-static int sh_veu_try_fmt(struct v4l2_format *f, const struct sh_veu_format *fmt)
-{
- struct v4l2_pix_format *pix = &f->fmt.pix;
- unsigned int y_bytes_used;
-
- /*
- * V4L2 specification suggests, that the driver should correct the
- * format struct if any of the dimensions is unsupported
- */
- switch (pix->field) {
- default:
- case V4L2_FIELD_ANY:
- pix->field = V4L2_FIELD_NONE;
- /* fall through: continue handling V4L2_FIELD_NONE */
- case V4L2_FIELD_NONE:
- break;
- }
-
- v4l_bound_align_image(&pix->width, MIN_W, MAX_W, ALIGN_W,
- &pix->height, MIN_H, MAX_H, 0, 0);
-
- y_bytes_used = (pix->width * fmt->ydepth) >> 3;
-
- if (pix->bytesperline < y_bytes_used)
- pix->bytesperline = y_bytes_used;
- pix->sizeimage = pix->height * pix->bytesperline * fmt->depth / fmt->ydepth;
-
- pix->pixelformat = fmt->fourcc;
- pix->colorspace = sh_veu_4cc2cspace(pix->pixelformat);
-
- pr_debug("%s(): type: %d, size %u\n", __func__, f->type, pix->sizeimage);
-
- return 0;
-}
-
-static const struct sh_veu_format *sh_veu_find_fmt(const struct v4l2_format *f)
-{
- const int *fmt;
- int i, n, dflt;
-
- pr_debug("%s(%d;%d)\n", __func__, f->type, f->fmt.pix.field);
-
- switch (f->type) {
- case V4L2_BUF_TYPE_VIDEO_CAPTURE:
- fmt = sh_veu_fmt_out;
- n = ARRAY_SIZE(sh_veu_fmt_out);
- dflt = DEFAULT_OUT_FMTIDX;
- break;
- case V4L2_BUF_TYPE_VIDEO_OUTPUT:
- default:
- fmt = sh_veu_fmt_in;
- n = ARRAY_SIZE(sh_veu_fmt_in);
- dflt = DEFAULT_IN_FMTIDX;
- break;
- }
-
- for (i = 0; i < n; i++)
- if (sh_veu_fmt[fmt[i]].fourcc == f->fmt.pix.pixelformat)
- return &sh_veu_fmt[fmt[i]];
-
- return &sh_veu_fmt[dflt];
-}
-
-static int sh_veu_try_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_format *f)
-{
- const struct sh_veu_format *fmt;
-
- fmt = sh_veu_find_fmt(f);
-
- return sh_veu_try_fmt(f, fmt);
-}
-
-static int sh_veu_try_fmt_vid_out(struct file *file, void *priv,
- struct v4l2_format *f)
-{
- const struct sh_veu_format *fmt;
-
- fmt = sh_veu_find_fmt(f);
-
- return sh_veu_try_fmt(f, fmt);
-}
-
-static void sh_veu_colour_offset(struct sh_veu_dev *veu, struct sh_veu_vfmt *vfmt)
-{
- /* dst_left and dst_top validity will be verified in CROP / COMPOSE */
- unsigned int left = vfmt->frame.left & ~0x03;
- unsigned int top = vfmt->frame.top;
- dma_addr_t offset = (dma_addr_t)top * veu->vfmt_out.bytesperline +
- (((dma_addr_t)left * veu->vfmt_out.fmt->depth) >> 3);
- unsigned int y_line;
-
- vfmt->offset_y = offset;
-
- switch (vfmt->fmt->fourcc) {
- case V4L2_PIX_FMT_NV12:
- case V4L2_PIX_FMT_NV16:
- case V4L2_PIX_FMT_NV24:
- y_line = ALIGN(vfmt->frame.width, 16);
- vfmt->offset_c = offset + y_line * vfmt->frame.height;
- break;
- case V4L2_PIX_FMT_RGB332:
- case V4L2_PIX_FMT_RGB444:
- case V4L2_PIX_FMT_RGB565:
- case V4L2_PIX_FMT_BGR666:
- case V4L2_PIX_FMT_RGB24:
- vfmt->offset_c = 0;
- break;
- default:
- BUG();
- }
-}
-
-static int sh_veu_s_fmt(struct sh_veu_file *veu_file, struct v4l2_format *f)
-{
- struct v4l2_pix_format *pix = &f->fmt.pix;
- struct sh_veu_dev *veu = veu_file->veu_dev;
- struct sh_veu_vfmt *vfmt;
- struct vb2_queue *vq;
- int ret = sh_veu_context_init(veu);
- if (ret < 0)
- return ret;
-
- vq = v4l2_m2m_get_vq(veu->m2m_ctx, f->type);
- if (!vq)
- return -EINVAL;
-
- if (vb2_is_busy(vq)) {
- v4l2_err(&veu_file->veu_dev->v4l2_dev, "%s queue busy\n", __func__);
- return -EBUSY;
- }
-
- vfmt = sh_veu_get_vfmt(veu, f->type);
- /* called after try_fmt(), hence vfmt != NULL. Implicit BUG_ON() below */
-
- vfmt->fmt = sh_veu_find_fmt(f);
- /* vfmt->fmt != NULL following the same argument as above */
- vfmt->frame.width = pix->width;
- vfmt->frame.height = pix->height;
- vfmt->bytesperline = pix->bytesperline;
-
- sh_veu_colour_offset(veu, vfmt);
-
- /*
- * We could also verify and require configuration only if any parameters
- * actually have changed, but it is unlikely, that the user requests the
- * same configuration several times without closing the device.
- */
- veu_file->cfg_needed = true;
-
- dev_dbg(veu->dev,
- "Setting format for type %d, wxh: %dx%d, fmt: %x\n",
- f->type, pix->width, pix->height, vfmt->fmt->fourcc);
-
- return 0;
-}
-
-static int sh_veu_s_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_format *f)
-{
- int ret = sh_veu_try_fmt_vid_cap(file, priv, f);
- if (ret)
- return ret;
-
- return sh_veu_s_fmt(priv, f);
-}
-
-static int sh_veu_s_fmt_vid_out(struct file *file, void *priv,
- struct v4l2_format *f)
-{
- int ret = sh_veu_try_fmt_vid_out(file, priv, f);
- if (ret)
- return ret;
-
- return sh_veu_s_fmt(priv, f);
-}
-
-static int sh_veu_reqbufs(struct file *file, void *priv,
- struct v4l2_requestbuffers *reqbufs)
-{
- struct sh_veu_file *veu_file = priv;
- struct sh_veu_dev *veu = veu_file->veu_dev;
- int ret = sh_veu_context_init(veu);
- if (ret < 0)
- return ret;
-
- ret = sh_veu_stream_init(veu, veu_file, reqbufs->type);
- if (ret < 0)
- return ret;
-
- return v4l2_m2m_reqbufs(file, veu->m2m_ctx, reqbufs);
-}
-
-static int sh_veu_querybuf(struct file *file, void *priv,
- struct v4l2_buffer *buf)
-{
- struct sh_veu_file *veu_file = priv;
-
- if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type))
- return -EBUSY;
-
- return v4l2_m2m_querybuf(file, veu_file->veu_dev->m2m_ctx, buf);
-}
-
-static int sh_veu_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
-{
- struct sh_veu_file *veu_file = priv;
-
- dev_dbg(veu_file->veu_dev->dev, "%s(%d)\n", __func__, buf->type);
- if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type))
- return -EBUSY;
-
- return v4l2_m2m_qbuf(file, veu_file->veu_dev->m2m_ctx, buf);
-}
-
-static int sh_veu_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
-{
- struct sh_veu_file *veu_file = priv;
-
- dev_dbg(veu_file->veu_dev->dev, "%s(%d)\n", __func__, buf->type);
- if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type))
- return -EBUSY;
-
- return v4l2_m2m_dqbuf(file, veu_file->veu_dev->m2m_ctx, buf);
-}
-
-static void sh_veu_calc_scale(struct sh_veu_dev *veu,
- int size_in, int size_out, int crop_out,
- u32 *mant, u32 *frac, u32 *rep)
-{
- u32 fixpoint;
-
- /* calculate FRAC and MANT */
- *rep = *mant = *frac = 0;
-
- if (size_in == size_out) {
- if (crop_out != size_out)
- *mant = 1; /* needed for cropping */
- return;
- }
-
- /* VEU2H special upscale */
- if (veu->is_2h && size_out > size_in) {
- u32 fixpoint = (4096 * size_in) / size_out;
- *mant = fixpoint / 4096;
- *frac = (fixpoint - (*mant * 4096)) & ~0x07;
-
- switch (*frac) {
- case 0x800:
- *rep = 1;
- break;
- case 0x400:
- *rep = 3;
- break;
- case 0x200:
- *rep = 7;
- break;
- }
- if (*rep)
- return;
- }
-
- fixpoint = (4096 * (size_in - 1)) / (size_out + 1);
- *mant = fixpoint / 4096;
- *frac = fixpoint - (*mant * 4096);
-
- if (*frac & 0x07) {
- /*
- * FIXME: do we really have to round down twice in the
- * up-scaling case?
- */
- *frac &= ~0x07;
- if (size_out > size_in)
- *frac -= 8; /* round down if scaling up */
- else
- *frac += 8; /* round up if scaling down */
- }
-}
-
-static unsigned long sh_veu_scale_v(struct sh_veu_dev *veu,
- int size_in, int size_out, int crop_out)
-{
- u32 mant, frac, value, rep;
-
- sh_veu_calc_scale(veu, size_in, size_out, crop_out, &mant, &frac, &rep);
-
- /* set scale */
- value = (sh_veu_reg_read(veu, VEU_RFCR) & ~0xffff0000) |
- (((mant << 12) | frac) << 16);
-
- sh_veu_reg_write(veu, VEU_RFCR, value);
-
- /* set clip */
- value = (sh_veu_reg_read(veu, VEU_RFSR) & ~0xffff0000) |
- (((rep << 12) | crop_out) << 16);
-
- sh_veu_reg_write(veu, VEU_RFSR, value);
-
- return ALIGN((size_in * crop_out) / size_out, 4);
-}
-
-static unsigned long sh_veu_scale_h(struct sh_veu_dev *veu,
- int size_in, int size_out, int crop_out)
-{
- u32 mant, frac, value, rep;
-
- sh_veu_calc_scale(veu, size_in, size_out, crop_out, &mant, &frac, &rep);
-
- /* set scale */
- value = (sh_veu_reg_read(veu, VEU_RFCR) & ~0xffff) |
- (mant << 12) | frac;
-
- sh_veu_reg_write(veu, VEU_RFCR, value);
-
- /* set clip */
- value = (sh_veu_reg_read(veu, VEU_RFSR) & ~0xffff) |
- (rep << 12) | crop_out;
-
- sh_veu_reg_write(veu, VEU_RFSR, value);
-
- return ALIGN((size_in * crop_out) / size_out, 4);
-}
-
-static void sh_veu_configure(struct sh_veu_dev *veu)
-{
- u32 src_width, src_stride, src_height;
- u32 dst_width, dst_stride, dst_height;
- u32 real_w, real_h;
-
- /* reset VEU */
- sh_veu_reg_write(veu, VEU_BSRR, 0x100);
-
- src_width = veu->vfmt_in.frame.width;
- src_height = veu->vfmt_in.frame.height;
- src_stride = ALIGN(veu->vfmt_in.frame.width, 16);
-
- dst_width = real_w = veu->vfmt_out.frame.width;
- dst_height = real_h = veu->vfmt_out.frame.height;
- /* Datasheet is unclear - whether it's always number of bytes or not */
- dst_stride = veu->vfmt_out.bytesperline;
-
- /*
- * So far real_w == dst_width && real_h == dst_height, but it wasn't
- * necessarily the case in the original vidix driver, so, it may change
- * here in the future too.
- */
- src_width = sh_veu_scale_h(veu, src_width, real_w, dst_width);
- src_height = sh_veu_scale_v(veu, src_height, real_h, dst_height);
-
- sh_veu_reg_write(veu, VEU_SWR, src_stride);
- sh_veu_reg_write(veu, VEU_SSR, src_width | (src_height << 16));
- sh_veu_reg_write(veu, VEU_BSSR, 0); /* not using bundle mode */
-
- sh_veu_reg_write(veu, VEU_EDWR, dst_stride);
- sh_veu_reg_write(veu, VEU_DACR, 0); /* unused for RGB */
-
- sh_veu_reg_write(veu, VEU_SWPR, 0x67);
- sh_veu_reg_write(veu, VEU_TRCR, (6 << 16) | (0 << 14) | 2 | 4);
-
- if (veu->is_2h) {
- sh_veu_reg_write(veu, VEU_MCR00, 0x0cc5);
- sh_veu_reg_write(veu, VEU_MCR01, 0x0950);
- sh_veu_reg_write(veu, VEU_MCR02, 0x0000);
-
- sh_veu_reg_write(veu, VEU_MCR10, 0x397f);
- sh_veu_reg_write(veu, VEU_MCR11, 0x0950);
- sh_veu_reg_write(veu, VEU_MCR12, 0x3ccd);
-
- sh_veu_reg_write(veu, VEU_MCR20, 0x0000);
- sh_veu_reg_write(veu, VEU_MCR21, 0x0950);
- sh_veu_reg_write(veu, VEU_MCR22, 0x1023);
-
- sh_veu_reg_write(veu, VEU_COFFR, 0x00800010);
- }
-}
-
-static int sh_veu_streamon(struct file *file, void *priv,
- enum v4l2_buf_type type)
-{
- struct sh_veu_file *veu_file = priv;
-
- if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, type))
- return -EBUSY;
-
- if (veu_file->cfg_needed) {
- struct sh_veu_dev *veu = veu_file->veu_dev;
- veu_file->cfg_needed = false;
- sh_veu_configure(veu_file->veu_dev);
- veu->xaction = 0;
- veu->aborting = false;
- }
-
- return v4l2_m2m_streamon(file, veu_file->veu_dev->m2m_ctx, type);
-}
-
-static int sh_veu_streamoff(struct file *file, void *priv,
- enum v4l2_buf_type type)
-{
- struct sh_veu_file *veu_file = priv;
-
- if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, type))
- return -EBUSY;
-
- return v4l2_m2m_streamoff(file, veu_file->veu_dev->m2m_ctx, type);
-}
-
-static const struct v4l2_ioctl_ops sh_veu_ioctl_ops = {
- .vidioc_querycap = sh_veu_querycap,
-
- .vidioc_enum_fmt_vid_cap = sh_veu_enum_fmt_vid_cap,
- .vidioc_g_fmt_vid_cap = sh_veu_g_fmt_vid_cap,
- .vidioc_try_fmt_vid_cap = sh_veu_try_fmt_vid_cap,
- .vidioc_s_fmt_vid_cap = sh_veu_s_fmt_vid_cap,
-
- .vidioc_enum_fmt_vid_out = sh_veu_enum_fmt_vid_out,
- .vidioc_g_fmt_vid_out = sh_veu_g_fmt_vid_out,
- .vidioc_try_fmt_vid_out = sh_veu_try_fmt_vid_out,
- .vidioc_s_fmt_vid_out = sh_veu_s_fmt_vid_out,
-
- .vidioc_reqbufs = sh_veu_reqbufs,
- .vidioc_querybuf = sh_veu_querybuf,
-
- .vidioc_qbuf = sh_veu_qbuf,
- .vidioc_dqbuf = sh_veu_dqbuf,
-
- .vidioc_streamon = sh_veu_streamon,
- .vidioc_streamoff = sh_veu_streamoff,
-};
-
- /* ========== Queue operations ========== */
-
-static int sh_veu_queue_setup(struct vb2_queue *vq,
- unsigned int *nbuffers, unsigned int *nplanes,
- unsigned int sizes[], struct device *alloc_devs[])
-{
- struct sh_veu_dev *veu = vb2_get_drv_priv(vq);
- struct sh_veu_vfmt *vfmt = sh_veu_get_vfmt(veu, vq->type);
- unsigned int count = *nbuffers;
- unsigned int size = vfmt->bytesperline * vfmt->frame.height *
- vfmt->fmt->depth / vfmt->fmt->ydepth;
-
- if (count < 2)
- *nbuffers = count = 2;
-
- if (size * count > VIDEO_MEM_LIMIT) {
- count = VIDEO_MEM_LIMIT / size;
- *nbuffers = count;
- }
-
- if (*nplanes)
- return sizes[0] < size ? -EINVAL : 0;
-
- *nplanes = 1;
- sizes[0] = size;
-
- dev_dbg(veu->dev, "get %d buffer(s) of size %d each.\n", count, size);
-
- return 0;
-}
-
-static int sh_veu_buf_prepare(struct vb2_buffer *vb)
-{
- struct sh_veu_dev *veu = vb2_get_drv_priv(vb->vb2_queue);
- struct sh_veu_vfmt *vfmt;
- unsigned int sizeimage;
-
- vfmt = sh_veu_get_vfmt(veu, vb->vb2_queue->type);
- sizeimage = vfmt->bytesperline * vfmt->frame.height *
- vfmt->fmt->depth / vfmt->fmt->ydepth;
-
- if (vb2_plane_size(vb, 0) < sizeimage) {
- dev_dbg(veu->dev, "%s data will not fit into plane (%lu < %u)\n",
- __func__, vb2_plane_size(vb, 0), sizeimage);
- return -EINVAL;
- }
-
- vb2_set_plane_payload(vb, 0, sizeimage);
-
- return 0;
-}
-
-static void sh_veu_buf_queue(struct vb2_buffer *vb)
-{
- struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
- struct sh_veu_dev *veu = vb2_get_drv_priv(vb->vb2_queue);
- dev_dbg(veu->dev, "%s(%d)\n", __func__, vb->type);
- v4l2_m2m_buf_queue(veu->m2m_ctx, vbuf);
-}
-
-static const struct vb2_ops sh_veu_qops = {
- .queue_setup = sh_veu_queue_setup,
- .buf_prepare = sh_veu_buf_prepare,
- .buf_queue = sh_veu_buf_queue,
- .wait_prepare = vb2_ops_wait_prepare,
- .wait_finish = vb2_ops_wait_finish,
-};
-
-static int sh_veu_queue_init(void *priv, struct vb2_queue *src_vq,
- struct vb2_queue *dst_vq)
-{
- struct sh_veu_dev *veu = 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 = veu;
- src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
- src_vq->ops = &sh_veu_qops;
- src_vq->mem_ops = &vb2_dma_contig_memops;
- src_vq->lock = &veu->fop_lock;
- src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
- src_vq->dev = veu->v4l2_dev.dev;
-
- ret = vb2_queue_init(src_vq);
- if (ret < 0)
- 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 = veu;
- dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
- dst_vq->ops = &sh_veu_qops;
- dst_vq->mem_ops = &vb2_dma_contig_memops;
- dst_vq->lock = &veu->fop_lock;
- dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
- dst_vq->dev = veu->v4l2_dev.dev;
-
- return vb2_queue_init(dst_vq);
-}
-
- /* ========== File operations ========== */
-
-static int sh_veu_open(struct file *file)
-{
- struct sh_veu_dev *veu = video_drvdata(file);
- struct sh_veu_file *veu_file;
-
- veu_file = kzalloc(sizeof(*veu_file), GFP_KERNEL);
- if (!veu_file)
- return -ENOMEM;
-
- v4l2_fh_init(&veu_file->fh, video_devdata(file));
- veu_file->veu_dev = veu;
- veu_file->cfg_needed = true;
-
- file->private_data = veu_file;
-
- pm_runtime_get_sync(veu->dev);
- v4l2_fh_add(&veu_file->fh);
-
- dev_dbg(veu->dev, "Created instance %p\n", veu_file);
-
- return 0;
-}
-
-static int sh_veu_release(struct file *file)
-{
- struct sh_veu_dev *veu = video_drvdata(file);
- struct sh_veu_file *veu_file = file->private_data;
-
- dev_dbg(veu->dev, "Releasing instance %p\n", veu_file);
-
- if (veu_file == veu->capture) {
- veu->capture = NULL;
- vb2_queue_release(v4l2_m2m_get_vq(veu->m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE));
- }
-
- if (veu_file == veu->output) {
- veu->output = NULL;
- vb2_queue_release(v4l2_m2m_get_vq(veu->m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT));
- }
-
- if (!veu->output && !veu->capture && veu->m2m_ctx) {
- v4l2_m2m_ctx_release(veu->m2m_ctx);
- veu->m2m_ctx = NULL;
- }
-
- pm_runtime_put(veu->dev);
- v4l2_fh_del(&veu_file->fh);
- v4l2_fh_exit(&veu_file->fh);
-
- kfree(veu_file);
-
- return 0;
-}
-
-static __poll_t sh_veu_poll(struct file *file,
- struct poll_table_struct *wait)
-{
- struct sh_veu_file *veu_file = file->private_data;
-
- return v4l2_m2m_poll(file, veu_file->veu_dev->m2m_ctx, wait);
-}
-
-static int sh_veu_mmap(struct file *file, struct vm_area_struct *vma)
-{
- struct sh_veu_file *veu_file = file->private_data;
-
- return v4l2_m2m_mmap(file, veu_file->veu_dev->m2m_ctx, vma);
-}
-
-static const struct v4l2_file_operations sh_veu_fops = {
- .owner = THIS_MODULE,
- .open = sh_veu_open,
- .release = sh_veu_release,
- .poll = sh_veu_poll,
- .unlocked_ioctl = video_ioctl2,
- .mmap = sh_veu_mmap,
-};
-
-static const struct video_device sh_veu_videodev = {
- .name = "sh-veu",
- .fops = &sh_veu_fops,
- .ioctl_ops = &sh_veu_ioctl_ops,
- .minor = -1,
- .release = video_device_release_empty,
- .vfl_dir = VFL_DIR_M2M,
- .device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING,
-};
-
-static const struct v4l2_m2m_ops sh_veu_m2m_ops = {
- .device_run = sh_veu_device_run,
- .job_abort = sh_veu_job_abort,
-};
-
-static irqreturn_t sh_veu_bh(int irq, void *dev_id)
-{
- struct sh_veu_dev *veu = dev_id;
-
- if (veu->xaction == MEM2MEM_DEF_TRANSLEN || veu->aborting) {
- v4l2_m2m_job_finish(veu->m2m_dev, veu->m2m_ctx);
- veu->xaction = 0;
- } else {
- sh_veu_device_run(veu);
- }
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t sh_veu_isr(int irq, void *dev_id)
-{
- struct sh_veu_dev *veu = dev_id;
- struct vb2_v4l2_buffer *dst;
- struct vb2_v4l2_buffer *src;
- u32 status = sh_veu_reg_read(veu, VEU_EVTR);
-
- /* bundle read mode not used */
- if (!(status & 1))
- return IRQ_NONE;
-
- /* disable interrupt in VEU */
- sh_veu_reg_write(veu, VEU_EIER, 0);
- /* halt operation */
- sh_veu_reg_write(veu, VEU_STR, 0);
- /* ack int, write 0 to clear bits */
- sh_veu_reg_write(veu, VEU_EVTR, status & ~1);
-
- /* conversion completed */
- dst = v4l2_m2m_dst_buf_remove(veu->m2m_ctx);
- src = v4l2_m2m_src_buf_remove(veu->m2m_ctx);
- if (!src || !dst)
- return IRQ_NONE;
-
- dst->vb2_buf.timestamp = src->vb2_buf.timestamp;
- dst->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
- dst->flags |=
- src->flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
- dst->timecode = src->timecode;
-
- spin_lock(&veu->lock);
- v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
- v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
- spin_unlock(&veu->lock);
-
- veu->xaction++;
-
- return IRQ_WAKE_THREAD;
-}
-
-static int sh_veu_probe(struct platform_device *pdev)
-{
- struct sh_veu_dev *veu;
- struct resource *reg_res;
- struct video_device *vdev;
- int irq, ret;
-
- reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- irq = platform_get_irq(pdev, 0);
-
- if (!reg_res || irq <= 0) {
- dev_err(&pdev->dev, "Insufficient VEU platform information.\n");
- return -ENODEV;
- }
-
- veu = devm_kzalloc(&pdev->dev, sizeof(*veu), GFP_KERNEL);
- if (!veu)
- return -ENOMEM;
-
- veu->is_2h = resource_size(reg_res) == 0x22c;
-
- veu->base = devm_ioremap_resource(&pdev->dev, reg_res);
- if (IS_ERR(veu->base))
- return PTR_ERR(veu->base);
-
- ret = devm_request_threaded_irq(&pdev->dev, irq, sh_veu_isr, sh_veu_bh,
- 0, "veu", veu);
- if (ret < 0)
- return ret;
-
- ret = v4l2_device_register(&pdev->dev, &veu->v4l2_dev);
- if (ret < 0) {
- dev_err(&pdev->dev, "Error registering v4l2 device\n");
- return ret;
- }
-
- vdev = &veu->vdev;
-
- *vdev = sh_veu_videodev;
- vdev->v4l2_dev = &veu->v4l2_dev;
- spin_lock_init(&veu->lock);
- mutex_init(&veu->fop_lock);
- vdev->lock = &veu->fop_lock;
-
- video_set_drvdata(vdev, veu);
-
- veu->dev = &pdev->dev;
- veu->vfmt_out = DEFAULT_OUT_VFMT;
- veu->vfmt_in = DEFAULT_IN_VFMT;
-
- veu->m2m_dev = v4l2_m2m_init(&sh_veu_m2m_ops);
- if (IS_ERR(veu->m2m_dev)) {
- ret = PTR_ERR(veu->m2m_dev);
- v4l2_err(&veu->v4l2_dev, "Failed to init mem2mem device: %d\n", ret);
- goto em2minit;
- }
-
- pm_runtime_enable(&pdev->dev);
- pm_runtime_resume(&pdev->dev);
-
- ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
- pm_runtime_suspend(&pdev->dev);
- if (ret < 0)
- goto evidreg;
-
- return ret;
-
-evidreg:
- pm_runtime_disable(&pdev->dev);
- v4l2_m2m_release(veu->m2m_dev);
-em2minit:
- v4l2_device_unregister(&veu->v4l2_dev);
- return ret;
-}
-
-static int sh_veu_remove(struct platform_device *pdev)
-{
- struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
- struct sh_veu_dev *veu = container_of(v4l2_dev,
- struct sh_veu_dev, v4l2_dev);
-
- video_unregister_device(&veu->vdev);
- pm_runtime_disable(&pdev->dev);
- v4l2_m2m_release(veu->m2m_dev);
- v4l2_device_unregister(&veu->v4l2_dev);
-
- return 0;
-}
-
-static struct platform_driver __refdata sh_veu_pdrv = {
- .remove = sh_veu_remove,
- .driver = {
- .name = "sh_veu",
- },
-};
-
-module_platform_driver_probe(sh_veu_pdrv, sh_veu_probe);
-
-MODULE_DESCRIPTION("sh-mobile VEU mem2mem driver");
-MODULE_AUTHOR("Guennadi Liakhovetski, <g.liakhovetski@gmx.de>");
-MODULE_LICENSE("GPL v2");
projects / platform / kernel / linux-rpi.git / commitdiff