diff options
Diffstat (limited to 'drivers/media/platform/meson/ge2d/ge2d.c')
| -rw-r--r-- | drivers/media/platform/meson/ge2d/ge2d.c | 1067 |
1 files changed, 1067 insertions, 0 deletions
diff --git a/drivers/media/platform/meson/ge2d/ge2d.c b/drivers/media/platform/meson/ge2d/ge2d.c new file mode 100644 index 000000000000..f526501bd473 --- /dev/null +++ b/drivers/media/platform/meson/ge2d/ge2d.c @@ -0,0 +1,1067 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2020 BayLibre, SAS + * Author: Neil Armstrong <narmstrong@baylibre.com> + */ + +#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)); + 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)); + 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)); + 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)); + 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)); + 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)); + + regmap_write(ge2d->map, GE2D_SRC1_Y_START_END, + FIELD_PREP(GE2D_END, ctx->in.pix_fmt.height)); + regmap_write(ge2d->map, GE2D_SRC1_X_START_END, + FIELD_PREP(GE2D_END, ctx->in.pix_fmt.width)); + regmap_write(ge2d->map, GE2D_SRC2_Y_START_END, + FIELD_PREP(GE2D_END, ctx->out.pix_fmt.height)); + regmap_write(ge2d->map, GE2D_SRC2_X_START_END, + FIELD_PREP(GE2D_END, ctx->out.pix_fmt.width)); + regmap_write(ge2d->map, GE2D_DST_Y_START_END, + FIELD_PREP(GE2D_END, ctx->out.pix_fmt.height)); + regmap_write(ge2d->map, GE2D_DST_X_START_END, + FIELD_PREP(GE2D_END, ctx->out.pix_fmt.width)); + + /* 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 = 0; + 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 = 1; + 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 + */ + if (fmt.width != ctx->out.pix_fmt.width || + fmt.height != ctx->out.pix_fmt.width || + fmt.bytesperline > ctx->out.pix_fmt.bytesperline || + fmt.sizeimage > ctx->out.pix_fmt.sizeimage) + 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; + struct resource *res; + 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); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + regs = devm_ioremap_resource(ge2d->dev, res); + 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"); + 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 int 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); + video_device_release(ge2d->vfd); + v4l2_device_unregister(&ge2d->v4l2_dev); + clk_disable_unprepare(ge2d->clk); + + return 0; +} + +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 = ge2d_remove, + .driver = { + .name = "meson-ge2d", + .of_match_table = meson_ge2d_match, + }, +}; + +module_platform_driver(ge2d_drv); + +MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>"); +MODULE_DESCRIPTION("Amlogic 2D Graphic Acceleration Unit"); +MODULE_LICENSE("GPL"); |