// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2020 BayLibre, SAS
* Author: Neil Armstrong <[email protected]>
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/bitfield.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/reset.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/timer.h>
#include <linux/regmap.h>
#include <linux/platform_device.h>
#include <media/v4l2-device.h>
#include <media/v4l2-event.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-mem2mem.h>
#include <media/v4l2-ctrls.h>
#include <media/videobuf2-v4l2.h>
#include <media/videobuf2-dma-contig.h>
#include "ge2d-regs.h"
#define GE2D_NAME "meson-ge2d"
#define DEFAULT_WIDTH 128
#define DEFAULT_HEIGHT 128
#define DEFAULT_STRIDE 512
#define MAX_WIDTH 8191
#define MAX_HEIGHT 8191
/*
* Missing features:
* - Scaling
* - Simple 1/2 vertical scaling
* - YUV input support
* - Source global alpha
* - Colorspace conversion
*/
struct ge2d_fmt {
u32 fourcc;
bool alpha;
bool le;
unsigned int depth;
unsigned int hw_fmt;
unsigned int hw_map;
};
struct ge2d_frame {
struct vb2_v4l2_buffer *buf;
/* Image Format */
struct v4l2_pix_format pix_fmt;
/* Crop */
struct v4l2_rect crop;
/* Image format */
const struct ge2d_fmt *fmt;
};
struct ge2d_ctx {
struct v4l2_fh fh;
struct meson_ge2d *ge2d;
struct ge2d_frame in;
struct ge2d_frame out;
struct v4l2_ctrl_handler ctrl_handler;
unsigned long sequence_out, sequence_cap;
/* Control values */
u32 hflip;
u32 vflip;
u32 xy_swap;
};
struct meson_ge2d {
struct v4l2_device v4l2_dev;
struct v4l2_m2m_dev *m2m_dev;
struct video_device *vfd;
struct device *dev;
struct regmap *map;
struct clk *clk;
/* vb2 queue lock */
struct mutex mutex;
struct ge2d_ctx *curr;
};
#define FMT(_fourcc, _alpha, _depth, _map) \
{ \
.fourcc = _fourcc, \
.alpha = (_alpha), \
.depth = (_depth), \
.hw_fmt = GE2D_FORMAT_ ## _depth ## BIT, \
.hw_map = GE2D_COLOR_MAP_ ## _map, \
}
/* TOFIX Handle the YUV input formats */
static const struct ge2d_fmt formats[] = {
/* FOURCC Alpha HW FMT HW MAP */
FMT(V4L2_PIX_FMT_XRGB32, false, 32, BGRA8888),
FMT(V4L2_PIX_FMT_RGB32, true, 32, BGRA8888),
FMT(V4L2_PIX_FMT_ARGB32, true, 32, BGRA8888),
FMT(V4L2_PIX_FMT_RGBX32, false, 32, ABGR8888),
FMT(V4L2_PIX_FMT_RGBA32, true, 32, ABGR8888),
FMT(V4L2_PIX_FMT_BGRX32, false, 32, RGBA8888),
FMT(V4L2_PIX_FMT_BGRA32, true, 32, RGBA8888),
FMT(V4L2_PIX_FMT_BGR32, true, 32, ARGB8888),
FMT(V4L2_PIX_FMT_ABGR32, true, 32, ARGB8888),
FMT(V4L2_PIX_FMT_XBGR32, false, 32, ARGB8888),
FMT(V4L2_PIX_FMT_RGB24, false, 24, BGR888),
FMT(V4L2_PIX_FMT_BGR24, false, 24, RGB888),
FMT(V4L2_PIX_FMT_XRGB555X, false, 16, ARGB1555),
FMT(V4L2_PIX_FMT_ARGB555X, true, 16, ARGB1555),
FMT(V4L2_PIX_FMT_RGB565, false, 16, RGB565),
FMT(V4L2_PIX_FMT_RGBX444, false, 16, RGBA4444),
FMT(V4L2_PIX_FMT_RGBA444, true, 16, RGBA4444),
FMT(V4L2_PIX_FMT_XRGB444, false, 16, ARGB4444),
FMT(V4L2_PIX_FMT_ARGB444, true, 16, ARGB4444),
};
#define NUM_FORMATS ARRAY_SIZE(formats)
static const struct ge2d_fmt *find_fmt(struct v4l2_format *f)
{
unsigned int i;
for (i = 0; i < NUM_FORMATS; i++) {
if (formats[i].fourcc == f->fmt.pix.pixelformat)
return &formats[i];
}
/*
* TRY_FMT/S_FMT should never return an error when the requested format
* is not supported. Drivers should always return a valid format,
* preferably a format that is as widely supported by applications as
* possible.
*/
return &formats[0];
}
static struct ge2d_frame *get_frame(struct ge2d_ctx *ctx,
enum v4l2_buf_type type)
{
switch (type) {
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
return &ctx->in;
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
return &ctx->out;
default:
/* This should never happen, warn and return OUTPUT frame */
dev_warn(ctx->ge2d->dev, "%s: invalid buffer type\n", __func__);
return &ctx->in;
}
}
static void ge2d_hw_start(struct meson_ge2d *ge2d)
{
struct ge2d_ctx *ctx = ge2d->curr;
u32 reg;
/* Reset */
regmap_update_bits(ge2d->map, GE2D_GEN_CTRL1,
GE2D_SOFT_RST, GE2D_SOFT_RST);
regmap_update_bits(ge2d->map, GE2D_GEN_CTRL1,
GE2D_SOFT_RST, 0);
usleep_range(100, 200);
/* Implement CANVAS for non-AXG */
regmap_write(ge2d->map, GE2D_SRC1_BADDR_CTRL,
(vb2_dma_contig_plane_dma_addr(&ctx->in.buf->vb2_buf, 0) + 7) >> 3);
regmap_write(ge2d->map, GE2D_SRC1_STRIDE_CTRL,
(ctx->in.pix_fmt.bytesperline + 7) >> 3);
regmap_write(ge2d->map, GE2D_SRC2_BADDR_CTRL,
(vb2_dma_contig_plane_dma_addr(&ctx->out.buf->vb2_buf, 0) + 7) >> 3);
regmap_write(ge2d->map, GE2D_SRC2_STRIDE_CTRL,
(ctx->out.pix_fmt.bytesperline + 7) >> 3);
regmap_write(ge2d->map, GE2D_DST1_BADDR_CTRL,
(vb2_dma_contig_plane_dma_addr(&ctx->out.buf->vb2_buf, 0) + 7) >> 3);
regmap_write(ge2d->map, GE2D_DST1_STRIDE_CTRL,
(ctx->out.pix_fmt.bytesperline + 7) >> 3);
regmap_write(ge2d->map, GE2D_GEN_CTRL0, 0);
regmap_write(ge2d->map, GE2D_GEN_CTRL1,
FIELD_PREP(GE2D_INTERRUPT_CTRL, 2) |
FIELD_PREP(GE2D_SRC2_BURST_SIZE_CTRL, 3) |
FIELD_PREP(GE2D_SRC1_BURST_SIZE_CTRL, 0x3f));
regmap_write(ge2d->map, GE2D_GEN_CTRL2,
GE2D_SRC1_LITTLE_ENDIAN |
GE2D_SRC2_LITTLE_ENDIAN |
GE2D_DST_LITTLE_ENDIAN |
FIELD_PREP(GE2D_DST1_COLOR_MAP, ctx->out.fmt->hw_map) |
FIELD_PREP(GE2D_DST1_FORMAT, ctx->out.fmt->hw_fmt) |
FIELD_PREP(GE2D_SRC2_COLOR_MAP, ctx->out.fmt->hw_map) |
FIELD_PREP(GE2D_SRC2_FORMAT, ctx->out.fmt->hw_fmt) |
FIELD_PREP(GE2D_SRC1_COLOR_MAP, ctx->in.fmt->hw_map) |
FIELD_PREP(GE2D_SRC1_FORMAT, ctx->in.fmt->hw_fmt));
regmap_write(ge2d->map, GE2D_GEN_CTRL3,
GE2D_DST1_ENABLE);
regmap_write(ge2d->map, GE2D_SRC1_CLIPY_START_END,
FIELD_PREP(GE2D_START, ctx->in.crop.top) |
FIELD_PREP(GE2D_END, ctx->in.crop.top + ctx->in.crop.height - 1));
regmap_write(ge2d->map, GE2D_SRC1_CLIPX_START_END,
FIELD_PREP(GE2D_START, ctx->in.crop.left) |
FIELD_PREP(GE2D_END, ctx->in.crop.left + ctx->in.crop.width - 1));
regmap_write(ge2d->map, GE2D_SRC2_CLIPY_START_END,
FIELD_PREP(GE2D_START, ctx->out.crop.top) |
FIELD_PREP(GE2D_END, ctx->out.crop.top + ctx->out.crop.height - 1));
regmap_write(ge2d->map, GE2D_SRC2_CLIPX_START_END,
FIELD_PREP(GE2D_START, ctx->out.crop.left) |
FIELD_PREP(GE2D_END, ctx->out.crop.left + ctx->out.crop.width - 1));
regmap_write(ge2d->map, GE2D_DST_CLIPY_START_END,
FIELD_PREP(GE2D_START, ctx->out.crop.top) |
FIELD_PREP(GE2D_END, ctx->out.crop.top + ctx->out.crop.height - 1));
regmap_write(ge2d->map, GE2D_DST_CLIPX_START_END,
FIELD_PREP(GE2D_START, ctx->out.crop.left) |
FIELD_PREP(GE2D_END, ctx->out.crop.left + ctx->out.crop.width - 1));
regmap_write(ge2d->map, GE2D_SRC1_Y_START_END,
FIELD_PREP(GE2D_END, ctx->in.pix_fmt.height - 1));
regmap_write(ge2d->map, GE2D_SRC1_X_START_END,
FIELD_PREP(GE2D_END, ctx->in.pix_fmt.width - 1));
regmap_write(ge2d->map, GE2D_SRC2_Y_START_END,
FIELD_PREP(GE2D_END, ctx->out.pix_fmt.height - 1));
regmap_write(ge2d->map, GE2D_SRC2_X_START_END,
FIELD_PREP(GE2D_END, ctx->out.pix_fmt.width - 1));
regmap_write(ge2d->map, GE2D_DST_Y_START_END,
FIELD_PREP(GE2D_END, ctx->out.pix_fmt.height - 1));
regmap_write(ge2d->map, GE2D_DST_X_START_END,
FIELD_PREP(GE2D_END, ctx->out.pix_fmt.width - 1));
/* Color, no blend, use source color */
reg = GE2D_ALU_DO_COLOR_OPERATION_LOGIC(LOGIC_OPERATION_COPY,
COLOR_FACTOR_SRC_COLOR);
if (ctx->in.fmt->alpha && ctx->out.fmt->alpha)
/* Take source alpha */
reg |= GE2D_ALU_DO_ALPHA_OPERATION_LOGIC(LOGIC_OPERATION_COPY,
COLOR_FACTOR_SRC_ALPHA);
else if (!ctx->out.fmt->alpha)
/* Set alpha to 0 */
reg |= GE2D_ALU_DO_ALPHA_OPERATION_LOGIC(LOGIC_OPERATION_SET,
COLOR_FACTOR_ZERO);
else
/* Keep original alpha */
reg |= GE2D_ALU_DO_ALPHA_OPERATION_LOGIC(LOGIC_OPERATION_COPY,
COLOR_FACTOR_DST_ALPHA);
regmap_write(ge2d->map, GE2D_ALU_OP_CTRL, reg);
/* Start */
regmap_write(ge2d->map, GE2D_CMD_CTRL,
(ctx->xy_swap ? GE2D_DST_XY_SWAP : 0) |
(ctx->hflip ? GE2D_SRC1_Y_REV : 0) |
(ctx->vflip ? GE2D_SRC1_X_REV : 0) |
GE2D_CBUS_CMD_WR);
}
static void device_run(void *priv)
{
struct ge2d_ctx *ctx = priv;
struct meson_ge2d *ge2d = ctx->ge2d;
ge2d->curr = ctx;
ctx->in.buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
ctx->out.buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
ge2d_hw_start(ge2d);
}
static irqreturn_t ge2d_isr(int irq, void *priv)
{
struct meson_ge2d *ge2d = priv;
u32 intr;
regmap_read(ge2d->map, GE2D_STATUS0, &intr);
if (!(intr & GE2D_GE2D_BUSY)) {
struct vb2_v4l2_buffer *src, *dst;
struct ge2d_ctx *ctx = ge2d->curr;
ge2d->curr = NULL;
src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
src->sequence = ctx->sequence_out++;
dst->sequence = ctx->sequence_cap++;
dst->timecode = src->timecode;
dst->vb2_buf.timestamp = src->vb2_buf.timestamp;
dst->flags = src->flags;
v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
v4l2_m2m_job_finish(ge2d->m2m_dev, ctx->fh.m2m_ctx);
}
return IRQ_HANDLED;
}
static const struct v4l2_m2m_ops ge2d_m2m_ops = {
.device_run = device_run,
};
static int ge2d_queue_setup(struct vb2_queue *vq,
unsigned int *nbuffers, unsigned int *nplanes,
unsigned int sizes[], struct device *alloc_devs[])
{
struct ge2d_ctx *ctx = vb2_get_drv_priv(vq);
struct ge2d_frame *f = get_frame(ctx, vq->type);
if (*nplanes)
return sizes[0] < f->pix_fmt.sizeimage ? -EINVAL : 0;
sizes[0] = f->pix_fmt.sizeimage;
*nplanes = 1;
return 0;
}
static int ge2d_buf_prepare(struct vb2_buffer *vb)
{
struct ge2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct ge2d_frame *f = get_frame(ctx, vb->vb2_queue->type);
vbuf->field = V4L2_FIELD_NONE;
vb2_set_plane_payload(vb, 0, f->pix_fmt.sizeimage);
return 0;
}
static void ge2d_buf_queue(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct ge2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
}
static int ge2d_start_streaming(struct vb2_queue *vq, unsigned int count)
{
struct ge2d_ctx *ctx = vb2_get_drv_priv(vq);
if (V4L2_TYPE_IS_OUTPUT(vq->type))
ctx->sequence_out = 0;
else
ctx->sequence_cap = 0;
return 0;
}
static void ge2d_stop_streaming(struct vb2_queue *vq)
{
struct ge2d_ctx *ctx = vb2_get_drv_priv(vq);
struct vb2_v4l2_buffer *vbuf;
for (;;) {
if (V4L2_TYPE_IS_OUTPUT(vq->type))
vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
else
vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
if (!vbuf)
break;
v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
}
}
static const struct vb2_ops ge2d_qops = {
.queue_setup = ge2d_queue_setup,
.buf_prepare = ge2d_buf_prepare,
.buf_queue = ge2d_buf_queue,
.start_streaming = ge2d_start_streaming,
.stop_streaming = ge2d_stop_streaming,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};
static int
queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
{
struct ge2d_ctx *ctx = priv;
int ret;
src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
src_vq->drv_priv = ctx;
src_vq->ops = &ge2d_qops;
src_vq->mem_ops = &vb2_dma_contig_memops;
src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
src_vq->lock = &ctx->ge2d->mutex;
src_vq->dev = ctx->ge2d->v4l2_dev.dev;
ret = vb2_queue_init(src_vq);
if (ret)
return ret;
dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
dst_vq->drv_priv = ctx;
dst_vq->ops = &ge2d_qops;
dst_vq->mem_ops = &vb2_dma_contig_memops;
dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = &ctx->ge2d->mutex;
dst_vq->dev = ctx->ge2d->v4l2_dev.dev;
return vb2_queue_init(dst_vq);
}
static int
vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *cap)
{
strscpy(cap->driver, GE2D_NAME, sizeof(cap->driver));
strscpy(cap->card, GE2D_NAME, sizeof(cap->card));
strscpy(cap->bus_info, "platform:" GE2D_NAME, sizeof(cap->bus_info));
return 0;
}
static int vidioc_enum_fmt(struct file *file, void *priv, struct v4l2_fmtdesc *f)
{
const struct ge2d_fmt *fmt;
if (f->index >= NUM_FORMATS)
return -EINVAL;
fmt = &formats[f->index];
f->pixelformat = fmt->fourcc;
return 0;
}
static int vidioc_g_selection(struct file *file, void *priv,
struct v4l2_selection *s)
{
struct ge2d_ctx *ctx = priv;
struct ge2d_frame *f;
bool use_frame = false;
if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
f = get_frame(ctx, s->type);
switch (s->target) {
case V4L2_SEL_TGT_COMPOSE_DEFAULT:
case V4L2_SEL_TGT_COMPOSE_BOUNDS:
if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
break;
case V4L2_SEL_TGT_CROP_DEFAULT:
case V4L2_SEL_TGT_CROP_BOUNDS:
if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
return -EINVAL;
break;
case V4L2_SEL_TGT_COMPOSE:
if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
use_frame = true;
break;
case V4L2_SEL_TGT_CROP:
if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
return -EINVAL;
use_frame = true;
break;
default:
return -EINVAL;
}
if (use_frame) {
s->r = f->crop;
} else {
s->r.left = 0;
s->r.top = 0;
s->r.width = f->pix_fmt.width;
s->r.height = f->pix_fmt.height;
}
return 0;
}
static int vidioc_s_selection(struct file *file, void *priv,
struct v4l2_selection *s)
{
struct ge2d_ctx *ctx = priv;
struct meson_ge2d *ge2d = ctx->ge2d;
struct ge2d_frame *f;
int ret = 0;
if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
f = get_frame(ctx, s->type);
switch (s->target) {
case V4L2_SEL_TGT_COMPOSE:
/*
* COMPOSE target is only valid for capture buffer type, return
* error for output buffer type
*/
if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
break;
case V4L2_SEL_TGT_CROP:
/*
* CROP target is only valid for output buffer type, return
* error for capture buffer type
*/
if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
return -EINVAL;
break;
/*
* bound and default crop/compose targets are invalid targets to
* try/set
*/
default:
return -EINVAL;
}
if (s->r.top < 0 || s->r.left < 0) {
v4l2_err(&ge2d->v4l2_dev,
"doesn't support negative values for top & left.\n");
return -EINVAL;
}
if (s->r.left + s->r.width > f->pix_fmt.width ||
s->r.top + s->r.height > f->pix_fmt.height) {
v4l2_err(&ge2d->v4l2_dev, "unsupported rectangle value.\n");
return -EINVAL;
}
f->crop = s->r;
return ret;
}
static void vidioc_setup_cap_fmt(struct ge2d_ctx *ctx, struct v4l2_pix_format *f)
{
struct ge2d_frame *frm_out = get_frame(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
*f = frm_out->pix_fmt;
if (ctx->xy_swap) {
f->width = frm_out->pix_fmt.height;
f->height = frm_out->pix_fmt.width;
}
}
static int vidioc_try_fmt_cap(struct file *file, void *priv, struct v4l2_format *f)
{
const struct ge2d_fmt *fmt = find_fmt(f);
struct ge2d_ctx *ctx = priv;
struct v4l2_pix_format fmt_cap;
vidioc_setup_cap_fmt(ctx, &fmt_cap);
fmt_cap.pixelformat = fmt->fourcc;
fmt_cap.bytesperline = max(f->fmt.pix.bytesperline,
ALIGN((fmt_cap.width * fmt->depth) >> 3, 8));
fmt_cap.sizeimage = max(f->fmt.pix.sizeimage,
fmt_cap.height * fmt_cap.bytesperline);
f->fmt.pix = fmt_cap;
return 0;
}
static int vidioc_s_fmt_cap(struct file *file, void *priv, struct v4l2_format *f)
{
struct ge2d_ctx *ctx = priv;
struct meson_ge2d *ge2d = ctx->ge2d;
struct vb2_queue *vq;
struct ge2d_frame *frm;
int ret = 0;
/* Adjust all values accordingly to the hardware capabilities
* and chosen format.
*/
ret = vidioc_try_fmt_cap(file, priv, f);
if (ret)
return ret;
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
if (vb2_is_busy(vq)) {
v4l2_err(&ge2d->v4l2_dev, "queue (%d) bust\n", f->type);
return -EBUSY;
}
frm = get_frame(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
frm->pix_fmt = f->fmt.pix;
frm->fmt = find_fmt(f);
f->fmt.pix.pixelformat = frm->fmt->fourcc;
/* Reset crop settings */
frm->crop.left = 0;
frm->crop.top = 0;
frm->crop.width = frm->pix_fmt.width;
frm->crop.height = frm->pix_fmt.height;
return 0;
}
static int vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
{
struct ge2d_ctx *ctx = priv;
struct vb2_queue *vq;
struct ge2d_frame *frm;
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
if (!vq)
return -EINVAL;
frm = get_frame(ctx, f->type);
f->fmt.pix = frm->pix_fmt;
f->fmt.pix.pixelformat = frm->fmt->fourcc;
return 0;
}
static int vidioc_try_fmt_out(struct file *file, void *priv, struct v4l2_format *f)
{
const struct ge2d_fmt *fmt = find_fmt(f);
f->fmt.pix.field = V4L2_FIELD_NONE;
f->fmt.pix.pixelformat = fmt->fourcc;
if (f->fmt.pix.width > MAX_WIDTH)
f->fmt.pix.width = MAX_WIDTH;
if (f->fmt.pix.height > MAX_HEIGHT)
f->fmt.pix.height = MAX_HEIGHT;
f->fmt.pix.bytesperline = max(f->fmt.pix.bytesperline,
ALIGN((f->fmt.pix.width * fmt->depth) >> 3, 8));
f->fmt.pix.sizeimage = max(f->fmt.pix.sizeimage,
f->fmt.pix.height * f->fmt.pix.bytesperline);
return 0;
}
static int vidioc_s_fmt_out(struct file *file, void *priv, struct v4l2_format *f)
{
struct ge2d_ctx *ctx = priv;
struct meson_ge2d *ge2d = ctx->ge2d;
struct vb2_queue *vq;
struct ge2d_frame *frm, *frm_cap;
int ret = 0;
/* Adjust all values accordingly to the hardware capabilities
* and chosen format.
*/
ret = vidioc_try_fmt_out(file, priv, f);
if (ret)
return ret;
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
if (vb2_is_busy(vq)) {
v4l2_err(&ge2d->v4l2_dev, "queue (%d) bust\n", f->type);
return -EBUSY;
}
frm = get_frame(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
frm_cap = get_frame(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
frm->pix_fmt = f->fmt.pix;
frm->fmt = find_fmt(f);
f->fmt.pix.pixelformat = frm->fmt->fourcc;
/* Reset crop settings */
frm->crop.left = 0;
frm->crop.top = 0;
frm->crop.width = frm->pix_fmt.width;
frm->crop.height = frm->pix_fmt.height;
/* Propagate settings to capture */
vidioc_setup_cap_fmt(ctx, &frm_cap->pix_fmt);
return 0;
}
static const struct v4l2_ioctl_ops ge2d_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt,
.vidioc_g_fmt_vid_cap = vidioc_g_fmt,
.vidioc_try_fmt_vid_cap = vidioc_try_fmt_cap,
.vidioc_s_fmt_vid_cap = vidioc_s_fmt_cap,
.vidioc_enum_fmt_vid_out = vidioc_enum_fmt,
.vidioc_g_fmt_vid_out = vidioc_g_fmt,
.vidioc_try_fmt_vid_out = vidioc_try_fmt_out,
.vidioc_s_fmt_vid_out = vidioc_s_fmt_out,
.vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
.vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
.vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
.vidioc_streamon = v4l2_m2m_ioctl_streamon,
.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
.vidioc_g_selection = vidioc_g_selection,
.vidioc_s_selection = vidioc_s_selection,
};
static int ge2d_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct ge2d_ctx *ctx = container_of(ctrl->handler, struct ge2d_ctx,
ctrl_handler);
struct v4l2_pix_format fmt;
struct vb2_queue *vq;
switch (ctrl->id) {
case V4L2_CID_HFLIP:
ctx->hflip = ctrl->val;
break;
case V4L2_CID_VFLIP:
ctx->vflip = ctrl->val;
break;
case V4L2_CID_ROTATE:
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
if (vb2_is_busy(vq))
return -EBUSY;
if (ctrl->val == 90) {
ctx->hflip = 0;
ctx->vflip = 1;
ctx->xy_swap = 1;
} else if (ctrl->val == 180) {
ctx->hflip = 1;
ctx->vflip = 1;
ctx->xy_swap = 0;
} else if (ctrl->val == 270) {
ctx->hflip = 1;
ctx->vflip = 0;
ctx->xy_swap = 1;
} else {
ctx->hflip = 0;
ctx->vflip = 0;
ctx->xy_swap = 0;
}
vidioc_setup_cap_fmt(ctx, &fmt);
/*
* If the rotation parameter changes the OUTPUT frames
* parameters, take them in account
*/
ctx->out.pix_fmt = fmt;
break;
}
return 0;
}
static const struct v4l2_ctrl_ops ge2d_ctrl_ops = {
.s_ctrl = ge2d_s_ctrl,
};
static int ge2d_setup_ctrls(struct ge2d_ctx *ctx)
{
struct meson_ge2d *ge2d = ctx->ge2d;
v4l2_ctrl_handler_init(&ctx->ctrl_handler, 4);
v4l2_ctrl_new_std(&ctx->ctrl_handler, &ge2d_ctrl_ops,
V4L2_CID_HFLIP, 0, 1, 1, 0);
v4l2_ctrl_new_std(&ctx->ctrl_handler, &ge2d_ctrl_ops,
V4L2_CID_VFLIP, 0, 1, 1, 0);
v4l2_ctrl_new_std(&ctx->ctrl_handler, &ge2d_ctrl_ops,
V4L2_CID_ROTATE, 0, 270, 90, 0);
if (ctx->ctrl_handler.error) {
int err = ctx->ctrl_handler.error;
v4l2_err(&ge2d->v4l2_dev, "%s failed\n", __func__);
v4l2_ctrl_handler_free(&ctx->ctrl_handler);
return err;
}
return 0;
}
static const struct ge2d_frame def_frame = {
.pix_fmt = {
.width = DEFAULT_WIDTH,
.height = DEFAULT_HEIGHT,
.bytesperline = DEFAULT_STRIDE,
.sizeimage = DEFAULT_STRIDE * DEFAULT_HEIGHT,
.field = V4L2_FIELD_NONE,
},
.crop.width = DEFAULT_WIDTH,
.crop.height = DEFAULT_HEIGHT,
.fmt = &formats[0],
};
static int ge2d_open(struct file *file)
{
struct meson_ge2d *ge2d = video_drvdata(file);
struct ge2d_ctx *ctx = NULL;
int ret = 0;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
ctx->ge2d = ge2d;
/* Set default formats */
ctx->in = def_frame;
ctx->out = def_frame;
if (mutex_lock_interruptible(&ge2d->mutex)) {
kfree(ctx);
return -ERESTARTSYS;
}
ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(ge2d->m2m_dev, ctx, &queue_init);
if (IS_ERR(ctx->fh.m2m_ctx)) {
ret = PTR_ERR(ctx->fh.m2m_ctx);
mutex_unlock(&ge2d->mutex);
kfree(ctx);
return ret;
}
v4l2_fh_init(&ctx->fh, video_devdata(file));
file->private_data = &ctx->fh;
v4l2_fh_add(&ctx->fh);
ge2d_setup_ctrls(ctx);
/* Write the default values to the ctx struct */
v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
ctx->fh.ctrl_handler = &ctx->ctrl_handler;
mutex_unlock(&ge2d->mutex);
return 0;
}
static int ge2d_release(struct file *file)
{
struct ge2d_ctx *ctx =
container_of(file->private_data, struct ge2d_ctx, fh);
struct meson_ge2d *ge2d = ctx->ge2d;
mutex_lock(&ge2d->mutex);
v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
v4l2_ctrl_handler_free(&ctx->ctrl_handler);
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
kfree(ctx);
mutex_unlock(&ge2d->mutex);
return 0;
}
static const struct v4l2_file_operations ge2d_fops = {
.owner = THIS_MODULE,
.open = ge2d_open,
.release = ge2d_release,
.poll = v4l2_m2m_fop_poll,
.unlocked_ioctl = video_ioctl2,
.mmap = v4l2_m2m_fop_mmap,
};
static const struct video_device ge2d_videodev = {
.name = "meson-ge2d",
.fops = &ge2d_fops,
.ioctl_ops = &ge2d_ioctl_ops,
.minor = -1,
.release = video_device_release,
.vfl_dir = VFL_DIR_M2M,
.device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING,
};
static const struct regmap_config meson_ge2d_regmap_conf = {
.reg_bits = 8,
.val_bits = 32,
.reg_stride = 4,
.max_register = GE2D_SRC2_STRIDE_CTRL,
};
static int ge2d_probe(struct platform_device *pdev)
{
struct reset_control *rst;
struct video_device *vfd;
struct meson_ge2d *ge2d;
void __iomem *regs;
int ret = 0;
int irq;
if (!pdev->dev.of_node)
return -ENODEV;
ge2d = devm_kzalloc(&pdev->dev, sizeof(*ge2d), GFP_KERNEL);
if (!ge2d)
return -ENOMEM;
ge2d->dev = &pdev->dev;
mutex_init(&ge2d->mutex);
regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(regs))
return PTR_ERR(regs);
ge2d->map = devm_regmap_init_mmio(ge2d->dev, regs,
&meson_ge2d_regmap_conf);
if (IS_ERR(ge2d->map))
return PTR_ERR(ge2d->map);
irq = platform_get_irq(pdev, 0);
ret = devm_request_irq(ge2d->dev, irq, ge2d_isr, 0,
dev_name(ge2d->dev), ge2d);
if (ret < 0) {
dev_err(ge2d->dev, "failed to request irq\n");
return ret;
}
rst = devm_reset_control_get(ge2d->dev, NULL);
if (IS_ERR(rst)) {
dev_err(ge2d->dev, "failed to get core reset controller\n");
return PTR_ERR(rst);
}
ge2d->clk = devm_clk_get(ge2d->dev, NULL);
if (IS_ERR(ge2d->clk)) {
dev_err(ge2d->dev, "failed to get clock\n");
return PTR_ERR(ge2d->clk);
}
reset_control_assert(rst);
udelay(1);
reset_control_deassert(rst);
ret = clk_prepare_enable(ge2d->clk);
if (ret) {
dev_err(ge2d->dev, "Cannot enable ge2d sclk: %d\n", ret);
return ret;
}
ret = v4l2_device_register(&pdev->dev, &ge2d->v4l2_dev);
if (ret)
goto disable_clks;
vfd = video_device_alloc();
if (!vfd) {
v4l2_err(&ge2d->v4l2_dev, "Failed to allocate video device\n");
ret = -ENOMEM;
goto unreg_v4l2_dev;
}
*vfd = ge2d_videodev;
vfd->lock = &ge2d->mutex;
vfd->v4l2_dev = &ge2d->v4l2_dev;
video_set_drvdata(vfd, ge2d);
ge2d->vfd = vfd;
platform_set_drvdata(pdev, ge2d);
ge2d->m2m_dev = v4l2_m2m_init(&ge2d_m2m_ops);
if (IS_ERR(ge2d->m2m_dev)) {
v4l2_err(&ge2d->v4l2_dev, "Failed to init mem2mem device\n");
ret = PTR_ERR(ge2d->m2m_dev);
goto rel_vdev;
}
ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
if (ret) {
v4l2_err(&ge2d->v4l2_dev, "Failed to register video device\n");
goto rel_m2m;
}
v4l2_info(&ge2d->v4l2_dev, "Registered %s as /dev/%s\n",
vfd->name, video_device_node_name(vfd));
return 0;
rel_m2m:
v4l2_m2m_release(ge2d->m2m_dev);
rel_vdev:
video_device_release(ge2d->vfd);
unreg_v4l2_dev:
v4l2_device_unregister(&ge2d->v4l2_dev);
disable_clks:
clk_disable_unprepare(ge2d->clk);
return ret;
}
static void ge2d_remove(struct platform_device *pdev)
{
struct meson_ge2d *ge2d = platform_get_drvdata(pdev);
video_unregister_device(ge2d->vfd);
v4l2_m2m_release(ge2d->m2m_dev);
v4l2_device_unregister(&ge2d->v4l2_dev);
clk_disable_unprepare(ge2d->clk);
}
static const struct of_device_id meson_ge2d_match[] = {
{
.compatible = "amlogic,axg-ge2d",
},
{},
};
MODULE_DEVICE_TABLE(of, meson_ge2d_match);
static struct platform_driver ge2d_drv = {
.probe = ge2d_probe,
.remove_new = ge2d_remove,
.driver = {
.name = "meson-ge2d",
.of_match_table = meson_ge2d_match,
},
};
module_platform_driver(ge2d_drv);
MODULE_AUTHOR("Neil Armstrong <[email protected]>");
MODULE_DESCRIPTION("Amlogic 2D Graphic Acceleration Unit");
MODULE_LICENSE("GPL");
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