| /* |
| * Samsung S5P G2D - 2D Graphics Accelerator Driver |
| * |
| * Copyright (c) 2011 Samsung Electronics Co., Ltd. |
| * Kamil Debski, <k.debski@samsung.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the |
| * License, or (at your option) any later version |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/fs.h> |
| #include <linux/version.h> |
| #include <linux/timer.h> |
| #include <linux/sched.h> |
| #include <linux/slab.h> |
| #include <linux/clk.h> |
| #include <linux/interrupt.h> |
| #include <linux/of.h> |
| |
| #include <linux/platform_device.h> |
| #include <media/v4l2-mem2mem.h> |
| #include <media/v4l2-device.h> |
| #include <media/v4l2-ioctl.h> |
| #include <media/videobuf2-core.h> |
| #include <media/videobuf2-dma-contig.h> |
| |
| #include "g2d.h" |
| #include "g2d-regs.h" |
| |
| #define fh2ctx(__fh) container_of(__fh, struct g2d_ctx, fh) |
| |
| static struct g2d_fmt formats[] = { |
| { |
| .name = "XRGB_8888", |
| .fourcc = V4L2_PIX_FMT_RGB32, |
| .depth = 32, |
| .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_8888), |
| }, |
| { |
| .name = "RGB_565", |
| .fourcc = V4L2_PIX_FMT_RGB565X, |
| .depth = 16, |
| .hw = COLOR_MODE(ORDER_XRGB, MODE_RGB_565), |
| }, |
| { |
| .name = "XRGB_1555", |
| .fourcc = V4L2_PIX_FMT_RGB555X, |
| .depth = 16, |
| .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_1555), |
| }, |
| { |
| .name = "XRGB_4444", |
| .fourcc = V4L2_PIX_FMT_RGB444, |
| .depth = 16, |
| .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_4444), |
| }, |
| { |
| .name = "PACKED_RGB_888", |
| .fourcc = V4L2_PIX_FMT_RGB24, |
| .depth = 24, |
| .hw = COLOR_MODE(ORDER_XRGB, MODE_PACKED_RGB_888), |
| }, |
| }; |
| #define NUM_FORMATS ARRAY_SIZE(formats) |
| |
| static struct g2d_frame def_frame = { |
| .width = DEFAULT_WIDTH, |
| .height = DEFAULT_HEIGHT, |
| .c_width = DEFAULT_WIDTH, |
| .c_height = DEFAULT_HEIGHT, |
| .o_width = 0, |
| .o_height = 0, |
| .fmt = &formats[0], |
| .right = DEFAULT_WIDTH, |
| .bottom = DEFAULT_HEIGHT, |
| }; |
| |
| static struct g2d_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]; |
| } |
| return NULL; |
| } |
| |
| |
| static struct g2d_frame *get_frame(struct g2d_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: |
| return ERR_PTR(-EINVAL); |
| } |
| } |
| |
| static int g2d_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt, |
| unsigned int *nbuffers, unsigned int *nplanes, |
| unsigned int sizes[], void *alloc_ctxs[]) |
| { |
| struct g2d_ctx *ctx = vb2_get_drv_priv(vq); |
| struct g2d_frame *f = get_frame(ctx, vq->type); |
| |
| if (IS_ERR(f)) |
| return PTR_ERR(f); |
| |
| sizes[0] = f->size; |
| *nplanes = 1; |
| alloc_ctxs[0] = ctx->dev->alloc_ctx; |
| |
| if (*nbuffers == 0) |
| *nbuffers = 1; |
| |
| return 0; |
| } |
| |
| static int g2d_buf_prepare(struct vb2_buffer *vb) |
| { |
| struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
| struct g2d_frame *f = get_frame(ctx, vb->vb2_queue->type); |
| |
| if (IS_ERR(f)) |
| return PTR_ERR(f); |
| vb2_set_plane_payload(vb, 0, f->size); |
| return 0; |
| } |
| |
| static void g2d_buf_queue(struct vb2_buffer *vb) |
| { |
| struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
| v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb); |
| } |
| |
| static struct vb2_ops g2d_qops = { |
| .queue_setup = g2d_queue_setup, |
| .buf_prepare = g2d_buf_prepare, |
| .buf_queue = g2d_buf_queue, |
| }; |
| |
| static int queue_init(void *priv, struct vb2_queue *src_vq, |
| struct vb2_queue *dst_vq) |
| { |
| struct g2d_ctx *ctx = priv; |
| int ret; |
| |
| src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
| src_vq->io_modes = VB2_MMAP | VB2_USERPTR; |
| src_vq->drv_priv = ctx; |
| src_vq->ops = &g2d_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->dev->mutex; |
| |
| 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_USERPTR; |
| dst_vq->drv_priv = ctx; |
| dst_vq->ops = &g2d_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->dev->mutex; |
| |
| return vb2_queue_init(dst_vq); |
| } |
| |
| static int g2d_s_ctrl(struct v4l2_ctrl *ctrl) |
| { |
| struct g2d_ctx *ctx = container_of(ctrl->handler, struct g2d_ctx, |
| ctrl_handler); |
| unsigned long flags; |
| |
| spin_lock_irqsave(&ctx->dev->ctrl_lock, flags); |
| switch (ctrl->id) { |
| case V4L2_CID_COLORFX: |
| if (ctrl->val == V4L2_COLORFX_NEGATIVE) |
| ctx->rop = ROP4_INVERT; |
| else |
| ctx->rop = ROP4_COPY; |
| break; |
| |
| case V4L2_CID_HFLIP: |
| ctx->flip = ctx->ctrl_hflip->val | (ctx->ctrl_vflip->val << 1); |
| break; |
| |
| } |
| spin_unlock_irqrestore(&ctx->dev->ctrl_lock, flags); |
| return 0; |
| } |
| |
| static const struct v4l2_ctrl_ops g2d_ctrl_ops = { |
| .s_ctrl = g2d_s_ctrl, |
| }; |
| |
| static int g2d_setup_ctrls(struct g2d_ctx *ctx) |
| { |
| struct g2d_dev *dev = ctx->dev; |
| |
| v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3); |
| |
| ctx->ctrl_hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops, |
| V4L2_CID_HFLIP, 0, 1, 1, 0); |
| |
| ctx->ctrl_vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops, |
| V4L2_CID_VFLIP, 0, 1, 1, 0); |
| |
| v4l2_ctrl_new_std_menu( |
| &ctx->ctrl_handler, |
| &g2d_ctrl_ops, |
| V4L2_CID_COLORFX, |
| V4L2_COLORFX_NEGATIVE, |
| ~((1 << V4L2_COLORFX_NONE) | (1 << V4L2_COLORFX_NEGATIVE)), |
| V4L2_COLORFX_NONE); |
| |
| if (ctx->ctrl_handler.error) { |
| int err = ctx->ctrl_handler.error; |
| v4l2_err(&dev->v4l2_dev, "g2d_setup_ctrls failed\n"); |
| v4l2_ctrl_handler_free(&ctx->ctrl_handler); |
| return err; |
| } |
| |
| v4l2_ctrl_cluster(2, &ctx->ctrl_hflip); |
| |
| return 0; |
| } |
| |
| static int g2d_open(struct file *file) |
| { |
| struct g2d_dev *dev = video_drvdata(file); |
| struct g2d_ctx *ctx = NULL; |
| int ret = 0; |
| |
| ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); |
| if (!ctx) |
| return -ENOMEM; |
| ctx->dev = dev; |
| /* Set default formats */ |
| ctx->in = def_frame; |
| ctx->out = def_frame; |
| |
| if (mutex_lock_interruptible(&dev->mutex)) { |
| kfree(ctx); |
| return -ERESTARTSYS; |
| } |
| ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init); |
| if (IS_ERR(ctx->fh.m2m_ctx)) { |
| ret = PTR_ERR(ctx->fh.m2m_ctx); |
| mutex_unlock(&dev->mutex); |
| kfree(ctx); |
| return ret; |
| } |
| v4l2_fh_init(&ctx->fh, video_devdata(file)); |
| file->private_data = &ctx->fh; |
| v4l2_fh_add(&ctx->fh); |
| |
| g2d_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(&dev->mutex); |
| |
| v4l2_info(&dev->v4l2_dev, "instance opened\n"); |
| return 0; |
| } |
| |
| static int g2d_release(struct file *file) |
| { |
| struct g2d_dev *dev = video_drvdata(file); |
| struct g2d_ctx *ctx = fh2ctx(file->private_data); |
| |
| v4l2_ctrl_handler_free(&ctx->ctrl_handler); |
| v4l2_fh_del(&ctx->fh); |
| v4l2_fh_exit(&ctx->fh); |
| kfree(ctx); |
| v4l2_info(&dev->v4l2_dev, "instance closed\n"); |
| return 0; |
| } |
| |
| |
| static int vidioc_querycap(struct file *file, void *priv, |
| struct v4l2_capability *cap) |
| { |
| strncpy(cap->driver, G2D_NAME, sizeof(cap->driver) - 1); |
| strncpy(cap->card, G2D_NAME, sizeof(cap->card) - 1); |
| cap->bus_info[0] = 0; |
| cap->version = KERNEL_VERSION(1, 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_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT | |
| V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING; |
| return 0; |
| } |
| |
| static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f) |
| { |
| struct g2d_fmt *fmt; |
| if (f->index >= NUM_FORMATS) |
| return -EINVAL; |
| fmt = &formats[f->index]; |
| f->pixelformat = fmt->fourcc; |
| strncpy(f->description, fmt->name, sizeof(f->description) - 1); |
| return 0; |
| } |
| |
| static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f) |
| { |
| struct g2d_ctx *ctx = prv; |
| struct vb2_queue *vq; |
| struct g2d_frame *frm; |
| |
| vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); |
| if (!vq) |
| return -EINVAL; |
| frm = get_frame(ctx, f->type); |
| if (IS_ERR(frm)) |
| return PTR_ERR(frm); |
| |
| f->fmt.pix.width = frm->width; |
| f->fmt.pix.height = frm->height; |
| f->fmt.pix.field = V4L2_FIELD_NONE; |
| f->fmt.pix.pixelformat = frm->fmt->fourcc; |
| f->fmt.pix.bytesperline = (frm->width * frm->fmt->depth) >> 3; |
| f->fmt.pix.sizeimage = frm->size; |
| return 0; |
| } |
| |
| static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f) |
| { |
| struct g2d_fmt *fmt; |
| enum v4l2_field *field; |
| |
| fmt = find_fmt(f); |
| if (!fmt) |
| return -EINVAL; |
| |
| field = &f->fmt.pix.field; |
| if (*field == V4L2_FIELD_ANY) |
| *field = V4L2_FIELD_NONE; |
| else if (*field != V4L2_FIELD_NONE) |
| return -EINVAL; |
| |
| 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; |
| |
| if (f->fmt.pix.width < 1) |
| f->fmt.pix.width = 1; |
| if (f->fmt.pix.height < 1) |
| f->fmt.pix.height = 1; |
| |
| f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; |
| f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; |
| return 0; |
| } |
| |
| static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f) |
| { |
| struct g2d_ctx *ctx = prv; |
| struct g2d_dev *dev = ctx->dev; |
| struct vb2_queue *vq; |
| struct g2d_frame *frm; |
| struct g2d_fmt *fmt; |
| int ret = 0; |
| |
| /* Adjust all values accordingly to the hardware capabilities |
| * and chosen format. */ |
| ret = vidioc_try_fmt(file, prv, f); |
| if (ret) |
| return ret; |
| vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); |
| if (vb2_is_busy(vq)) { |
| v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type); |
| return -EBUSY; |
| } |
| frm = get_frame(ctx, f->type); |
| if (IS_ERR(frm)) |
| return PTR_ERR(frm); |
| fmt = find_fmt(f); |
| if (!fmt) |
| return -EINVAL; |
| frm->width = f->fmt.pix.width; |
| frm->height = f->fmt.pix.height; |
| frm->size = f->fmt.pix.sizeimage; |
| /* Reset crop settings */ |
| frm->o_width = 0; |
| frm->o_height = 0; |
| frm->c_width = frm->width; |
| frm->c_height = frm->height; |
| frm->right = frm->width; |
| frm->bottom = frm->height; |
| frm->fmt = fmt; |
| frm->stride = f->fmt.pix.bytesperline; |
| return 0; |
| } |
| |
| static int vidioc_cropcap(struct file *file, void *priv, |
| struct v4l2_cropcap *cr) |
| { |
| struct g2d_ctx *ctx = priv; |
| struct g2d_frame *f; |
| |
| f = get_frame(ctx, cr->type); |
| if (IS_ERR(f)) |
| return PTR_ERR(f); |
| |
| cr->bounds.left = 0; |
| cr->bounds.top = 0; |
| cr->bounds.width = f->width; |
| cr->bounds.height = f->height; |
| cr->defrect = cr->bounds; |
| return 0; |
| } |
| |
| static int vidioc_g_crop(struct file *file, void *prv, struct v4l2_crop *cr) |
| { |
| struct g2d_ctx *ctx = prv; |
| struct g2d_frame *f; |
| |
| f = get_frame(ctx, cr->type); |
| if (IS_ERR(f)) |
| return PTR_ERR(f); |
| |
| cr->c.left = f->o_height; |
| cr->c.top = f->o_width; |
| cr->c.width = f->c_width; |
| cr->c.height = f->c_height; |
| return 0; |
| } |
| |
| static int vidioc_try_crop(struct file *file, void *prv, const struct v4l2_crop *cr) |
| { |
| struct g2d_ctx *ctx = prv; |
| struct g2d_dev *dev = ctx->dev; |
| struct g2d_frame *f; |
| |
| f = get_frame(ctx, cr->type); |
| if (IS_ERR(f)) |
| return PTR_ERR(f); |
| |
| if (cr->c.top < 0 || cr->c.left < 0) { |
| v4l2_err(&dev->v4l2_dev, |
| "doesn't support negative values for top & left\n"); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int vidioc_s_crop(struct file *file, void *prv, const struct v4l2_crop *cr) |
| { |
| struct g2d_ctx *ctx = prv; |
| struct g2d_frame *f; |
| int ret; |
| |
| ret = vidioc_try_crop(file, prv, cr); |
| if (ret) |
| return ret; |
| f = get_frame(ctx, cr->type); |
| if (IS_ERR(f)) |
| return PTR_ERR(f); |
| |
| f->c_width = cr->c.width; |
| f->c_height = cr->c.height; |
| f->o_width = cr->c.left; |
| f->o_height = cr->c.top; |
| f->bottom = f->o_height + f->c_height; |
| f->right = f->o_width + f->c_width; |
| return 0; |
| } |
| |
| static void job_abort(void *prv) |
| { |
| struct g2d_ctx *ctx = prv; |
| struct g2d_dev *dev = ctx->dev; |
| int ret; |
| |
| if (dev->curr == NULL) /* No job currently running */ |
| return; |
| |
| ret = wait_event_timeout(dev->irq_queue, |
| dev->curr == NULL, |
| msecs_to_jiffies(G2D_TIMEOUT)); |
| } |
| |
| static void device_run(void *prv) |
| { |
| struct g2d_ctx *ctx = prv; |
| struct g2d_dev *dev = ctx->dev; |
| struct vb2_buffer *src, *dst; |
| unsigned long flags; |
| u32 cmd = 0; |
| |
| dev->curr = ctx; |
| |
| src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); |
| dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx); |
| |
| clk_enable(dev->gate); |
| g2d_reset(dev); |
| |
| spin_lock_irqsave(&dev->ctrl_lock, flags); |
| |
| g2d_set_src_size(dev, &ctx->in); |
| g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(src, 0)); |
| |
| g2d_set_dst_size(dev, &ctx->out); |
| g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(dst, 0)); |
| |
| g2d_set_rop4(dev, ctx->rop); |
| g2d_set_flip(dev, ctx->flip); |
| |
| if (ctx->in.c_width != ctx->out.c_width || |
| ctx->in.c_height != ctx->out.c_height) { |
| if (dev->variant->hw_rev == TYPE_G2D_3X) |
| cmd |= CMD_V3_ENABLE_STRETCH; |
| else |
| g2d_set_v41_stretch(dev, &ctx->in, &ctx->out); |
| } |
| |
| g2d_set_cmd(dev, cmd); |
| g2d_start(dev); |
| |
| spin_unlock_irqrestore(&dev->ctrl_lock, flags); |
| } |
| |
| static irqreturn_t g2d_isr(int irq, void *prv) |
| { |
| struct g2d_dev *dev = prv; |
| struct g2d_ctx *ctx = dev->curr; |
| struct vb2_buffer *src, *dst; |
| |
| g2d_clear_int(dev); |
| clk_disable(dev->gate); |
| |
| BUG_ON(ctx == NULL); |
| |
| src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); |
| dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); |
| |
| BUG_ON(src == NULL); |
| BUG_ON(dst == NULL); |
| |
| dst->v4l2_buf.timecode = src->v4l2_buf.timecode; |
| dst->v4l2_buf.timestamp = src->v4l2_buf.timestamp; |
| |
| v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE); |
| v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE); |
| v4l2_m2m_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx); |
| |
| dev->curr = NULL; |
| wake_up(&dev->irq_queue); |
| return IRQ_HANDLED; |
| } |
| |
| static const struct v4l2_file_operations g2d_fops = { |
| .owner = THIS_MODULE, |
| .open = g2d_open, |
| .release = g2d_release, |
| .poll = v4l2_m2m_fop_poll, |
| .unlocked_ioctl = video_ioctl2, |
| .mmap = v4l2_m2m_fop_mmap, |
| }; |
| |
| static const struct v4l2_ioctl_ops g2d_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, |
| .vidioc_s_fmt_vid_cap = vidioc_s_fmt, |
| |
| .vidioc_enum_fmt_vid_out = vidioc_enum_fmt, |
| .vidioc_g_fmt_vid_out = vidioc_g_fmt, |
| .vidioc_try_fmt_vid_out = vidioc_try_fmt, |
| .vidioc_s_fmt_vid_out = vidioc_s_fmt, |
| |
| .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_streamon = v4l2_m2m_ioctl_streamon, |
| .vidioc_streamoff = v4l2_m2m_ioctl_streamoff, |
| |
| .vidioc_g_crop = vidioc_g_crop, |
| .vidioc_s_crop = vidioc_s_crop, |
| .vidioc_cropcap = vidioc_cropcap, |
| }; |
| |
| static struct video_device g2d_videodev = { |
| .name = G2D_NAME, |
| .fops = &g2d_fops, |
| .ioctl_ops = &g2d_ioctl_ops, |
| .minor = -1, |
| .release = video_device_release, |
| .vfl_dir = VFL_DIR_M2M, |
| }; |
| |
| static struct v4l2_m2m_ops g2d_m2m_ops = { |
| .device_run = device_run, |
| .job_abort = job_abort, |
| }; |
| |
| static const struct of_device_id exynos_g2d_match[]; |
| |
| static int g2d_probe(struct platform_device *pdev) |
| { |
| struct g2d_dev *dev; |
| struct video_device *vfd; |
| struct resource *res; |
| const struct of_device_id *of_id; |
| int ret = 0; |
| |
| dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); |
| if (!dev) |
| return -ENOMEM; |
| |
| spin_lock_init(&dev->ctrl_lock); |
| mutex_init(&dev->mutex); |
| atomic_set(&dev->num_inst, 0); |
| init_waitqueue_head(&dev->irq_queue); |
| |
| res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| |
| dev->regs = devm_ioremap_resource(&pdev->dev, res); |
| if (IS_ERR(dev->regs)) |
| return PTR_ERR(dev->regs); |
| |
| dev->clk = clk_get(&pdev->dev, "sclk_fimg2d"); |
| if (IS_ERR(dev->clk)) { |
| dev_err(&pdev->dev, "failed to get g2d clock\n"); |
| return -ENXIO; |
| } |
| |
| ret = clk_prepare(dev->clk); |
| if (ret) { |
| dev_err(&pdev->dev, "failed to prepare g2d clock\n"); |
| goto put_clk; |
| } |
| |
| dev->gate = clk_get(&pdev->dev, "fimg2d"); |
| if (IS_ERR(dev->gate)) { |
| dev_err(&pdev->dev, "failed to get g2d clock gate\n"); |
| ret = -ENXIO; |
| goto unprep_clk; |
| } |
| |
| ret = clk_prepare(dev->gate); |
| if (ret) { |
| dev_err(&pdev->dev, "failed to prepare g2d clock gate\n"); |
| goto put_clk_gate; |
| } |
| |
| res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| if (!res) { |
| dev_err(&pdev->dev, "failed to find IRQ\n"); |
| ret = -ENXIO; |
| goto unprep_clk_gate; |
| } |
| |
| dev->irq = res->start; |
| |
| ret = devm_request_irq(&pdev->dev, dev->irq, g2d_isr, |
| 0, pdev->name, dev); |
| if (ret) { |
| dev_err(&pdev->dev, "failed to install IRQ\n"); |
| goto put_clk_gate; |
| } |
| |
| dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); |
| if (IS_ERR(dev->alloc_ctx)) { |
| ret = PTR_ERR(dev->alloc_ctx); |
| goto unprep_clk_gate; |
| } |
| |
| ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); |
| if (ret) |
| goto alloc_ctx_cleanup; |
| vfd = video_device_alloc(); |
| if (!vfd) { |
| v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n"); |
| ret = -ENOMEM; |
| goto unreg_v4l2_dev; |
| } |
| *vfd = g2d_videodev; |
| vfd->lock = &dev->mutex; |
| vfd->v4l2_dev = &dev->v4l2_dev; |
| ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0); |
| if (ret) { |
| v4l2_err(&dev->v4l2_dev, "Failed to register video device\n"); |
| goto rel_vdev; |
| } |
| video_set_drvdata(vfd, dev); |
| snprintf(vfd->name, sizeof(vfd->name), "%s", g2d_videodev.name); |
| dev->vfd = vfd; |
| v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n", |
| vfd->num); |
| platform_set_drvdata(pdev, dev); |
| dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops); |
| if (IS_ERR(dev->m2m_dev)) { |
| v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n"); |
| ret = PTR_ERR(dev->m2m_dev); |
| goto unreg_video_dev; |
| } |
| |
| def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3; |
| |
| if (!pdev->dev.of_node) { |
| dev->variant = g2d_get_drv_data(pdev); |
| } else { |
| of_id = of_match_node(exynos_g2d_match, pdev->dev.of_node); |
| if (!of_id) { |
| ret = -ENODEV; |
| goto unreg_video_dev; |
| } |
| dev->variant = (struct g2d_variant *)of_id->data; |
| } |
| |
| return 0; |
| |
| unreg_video_dev: |
| video_unregister_device(dev->vfd); |
| rel_vdev: |
| video_device_release(vfd); |
| unreg_v4l2_dev: |
| v4l2_device_unregister(&dev->v4l2_dev); |
| alloc_ctx_cleanup: |
| vb2_dma_contig_cleanup_ctx(dev->alloc_ctx); |
| unprep_clk_gate: |
| clk_unprepare(dev->gate); |
| put_clk_gate: |
| clk_put(dev->gate); |
| unprep_clk: |
| clk_unprepare(dev->clk); |
| put_clk: |
| clk_put(dev->clk); |
| |
| return ret; |
| } |
| |
| static int g2d_remove(struct platform_device *pdev) |
| { |
| struct g2d_dev *dev = platform_get_drvdata(pdev); |
| |
| v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME); |
| v4l2_m2m_release(dev->m2m_dev); |
| video_unregister_device(dev->vfd); |
| v4l2_device_unregister(&dev->v4l2_dev); |
| vb2_dma_contig_cleanup_ctx(dev->alloc_ctx); |
| clk_unprepare(dev->gate); |
| clk_put(dev->gate); |
| clk_unprepare(dev->clk); |
| clk_put(dev->clk); |
| return 0; |
| } |
| |
| static struct g2d_variant g2d_drvdata_v3x = { |
| .hw_rev = TYPE_G2D_3X, /* Revision 3.0 for S5PV210 and Exynos4210 */ |
| }; |
| |
| static struct g2d_variant g2d_drvdata_v4x = { |
| .hw_rev = TYPE_G2D_4X, /* Revision 4.1 for Exynos4X12 and Exynos5 */ |
| }; |
| |
| static const struct of_device_id exynos_g2d_match[] = { |
| { |
| .compatible = "samsung,s5pv210-g2d", |
| .data = &g2d_drvdata_v3x, |
| }, { |
| .compatible = "samsung,exynos4212-g2d", |
| .data = &g2d_drvdata_v4x, |
| }, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(of, exynos_g2d_match); |
| |
| static struct platform_device_id g2d_driver_ids[] = { |
| { |
| .name = "s5p-g2d", |
| .driver_data = (unsigned long)&g2d_drvdata_v3x, |
| }, { |
| .name = "s5p-g2d-v4x", |
| .driver_data = (unsigned long)&g2d_drvdata_v4x, |
| }, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(platform, g2d_driver_ids); |
| |
| static struct platform_driver g2d_pdrv = { |
| .probe = g2d_probe, |
| .remove = g2d_remove, |
| .id_table = g2d_driver_ids, |
| .driver = { |
| .name = G2D_NAME, |
| .owner = THIS_MODULE, |
| .of_match_table = exynos_g2d_match, |
| }, |
| }; |
| |
| module_platform_driver(g2d_pdrv); |
| |
| MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>"); |
| MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver"); |
| MODULE_LICENSE("GPL"); |