diff options
Diffstat (limited to 'drivers/media/video/s5p-g2d/g2d.c')
-rw-r--r-- | drivers/media/video/s5p-g2d/g2d.c | 811 |
1 files changed, 811 insertions, 0 deletions
diff --git a/drivers/media/video/s5p-g2d/g2d.c b/drivers/media/video/s5p-g2d/g2d.c new file mode 100644 index 00000000000..febaa673d36 --- /dev/null +++ b/drivers/media/video/s5p-g2d/g2d.c @@ -0,0 +1,811 @@ +/* + * 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/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) + +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, +}; + +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->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; + + memset(src_vq, 0, sizeof(*src_vq)); + src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; + src_vq->io_modes = VB2_MMAP | VB2_USERPTR; + src_vq->drv_priv = ctx; + src_vq->ops = &g2d_qops; + src_vq->mem_ops = &vb2_dma_contig_memops; + src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); + + ret = vb2_queue_init(src_vq); + if (ret) + return ret; + + memset(dst_vq, 0, sizeof(*dst_vq)); + dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + dst_vq->io_modes = VB2_MMAP | VB2_USERPTR; + dst_vq->drv_priv = ctx; + dst_vq->ops = &g2d_qops; + dst_vq->mem_ops = &vb2_dma_contig_memops; + dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); + + 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); + switch (ctrl->id) { + case V4L2_CID_COLORFX: + if (ctrl->val == V4L2_COLORFX_NEGATIVE) + ctx->rop = ROP4_INVERT; + else + ctx->rop = ROP4_COPY; + break; + default: + v4l2_err(&ctx->dev->v4l2_dev, "unknown control\n"); + return -EINVAL; + } + return 0; +} + +static const struct v4l2_ctrl_ops g2d_ctrl_ops = { + .s_ctrl = g2d_s_ctrl, +}; + +int g2d_setup_ctrls(struct g2d_ctx *ctx) +{ + struct g2d_dev *dev = ctx->dev; + + v4l2_ctrl_handler_init(&ctx->ctrl_handler, 1); + if (ctx->ctrl_handler.error) { + v4l2_err(&dev->v4l2_dev, "v4l2_ctrl_handler_init failed\n"); + return ctx->ctrl_handler.error; + } + + 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) { + v4l2_err(&dev->v4l2_dev, "v4l2_ctrl_handler_init failed\n"); + return ctx->ctrl_handler.error; + } + + 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; + + ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init); + if (IS_ERR(ctx->m2m_ctx)) { + ret = PTR_ERR(ctx->m2m_ctx); + 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; + + 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); + cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT + | 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->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->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 unsigned int g2d_poll(struct file *file, struct poll_table_struct *wait) +{ + struct g2d_ctx *ctx = fh2ctx(file->private_data); + return v4l2_m2m_poll(file, ctx->m2m_ctx, wait); +} + +static int g2d_mmap(struct file *file, struct vm_area_struct *vma) +{ + struct g2d_ctx *ctx = fh2ctx(file->private_data); + return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma); +} + +static int vidioc_reqbufs(struct file *file, void *priv, + struct v4l2_requestbuffers *reqbufs) +{ + struct g2d_ctx *ctx = priv; + return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs); +} + +static int vidioc_querybuf(struct file *file, void *priv, + struct v4l2_buffer *buf) +{ + struct g2d_ctx *ctx = priv; + return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf); +} + +static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) +{ + struct g2d_ctx *ctx = priv; + return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf); +} + +static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) +{ + struct g2d_ctx *ctx = priv; + return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf); +} + + +static int vidioc_streamon(struct file *file, void *priv, + enum v4l2_buf_type type) +{ + struct g2d_ctx *ctx = priv; + return v4l2_m2m_streamon(file, ctx->m2m_ctx, type); +} + +static int vidioc_streamoff(struct file *file, void *priv, + enum v4l2_buf_type type) +{ + struct g2d_ctx *ctx = priv; + return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type); +} + +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, 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, 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 g2d_lock(void *prv) +{ + struct g2d_ctx *ctx = prv; + struct g2d_dev *dev = ctx->dev; + mutex_lock(&dev->mutex); +} + +static void g2d_unlock(void *prv) +{ + struct g2d_ctx *ctx = prv; + struct g2d_dev *dev = ctx->dev; + mutex_unlock(&dev->mutex); +} + +static void job_abort(void *prv) +{ + struct g2d_ctx *ctx = prv; + struct g2d_dev *dev = ctx->dev; + int ret; + + if (dev->curr == 0) /* No job currently running */ + return; + + ret = wait_event_timeout(dev->irq_queue, + dev->curr == 0, + 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; + u32 cmd = 0; + + dev->curr = ctx; + + src = v4l2_m2m_next_src_buf(ctx->m2m_ctx); + dst = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); + + clk_enable(dev->gate); + g2d_reset(dev); + + 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); + if (ctx->in.c_width != ctx->out.c_width || + ctx->in.c_height != ctx->out.c_height) + cmd |= g2d_cmd_stretch(1); + g2d_set_cmd(dev, cmd); + g2d_start(dev); +} + +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 == 0); + + src = v4l2_m2m_src_buf_remove(ctx->m2m_ctx); + dst = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx); + + BUG_ON(src == 0); + BUG_ON(dst == 0); + + 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->m2m_ctx); + + dev->curr = 0; + 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 = g2d_poll, + .unlocked_ioctl = video_ioctl2, + .mmap = g2d_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 = vidioc_reqbufs, + .vidioc_querybuf = vidioc_querybuf, + + .vidioc_qbuf = vidioc_qbuf, + .vidioc_dqbuf = vidioc_dqbuf, + + .vidioc_streamon = vidioc_streamon, + .vidioc_streamoff = vidioc_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, +}; + +static struct v4l2_m2m_ops g2d_m2m_ops = { + .device_run = device_run, + .job_abort = job_abort, + .lock = g2d_lock, + .unlock = g2d_unlock, +}; + +static int g2d_probe(struct platform_device *pdev) +{ + struct g2d_dev *dev; + struct video_device *vfd; + struct resource *res; + int ret = 0; + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) + return -ENOMEM; + spin_lock_init(&dev->irqlock); + mutex_init(&dev->mutex); + atomic_set(&dev->num_inst, 0); + init_waitqueue_head(&dev->irq_queue); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "failed to find registers\n"); + ret = -ENOENT; + goto free_dev; + } + + dev->res_regs = request_mem_region(res->start, resource_size(res), + dev_name(&pdev->dev)); + + if (!dev->res_regs) { + dev_err(&pdev->dev, "failed to obtain register region\n"); + ret = -ENOENT; + goto free_dev; + } + + dev->regs = ioremap(res->start, resource_size(res)); + if (!dev->regs) { + dev_err(&pdev->dev, "failed to map registers\n"); + ret = -ENOENT; + goto rel_res_regs; + } + + dev->clk = clk_get(&pdev->dev, "sclk_fimg2d"); + if (IS_ERR_OR_NULL(dev->clk)) { + dev_err(&pdev->dev, "failed to get g2d clock\n"); + ret = -ENXIO; + goto unmap_regs; + } + + dev->gate = clk_get(&pdev->dev, "fimg2d"); + if (IS_ERR_OR_NULL(dev->gate)) { + dev_err(&pdev->dev, "failed to get g2d clock gate\n"); + ret = -ENXIO; + goto put_clk; + } + + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (!res) { + dev_err(&pdev->dev, "failed to find IRQ\n"); + ret = -ENXIO; + goto put_clk_gate; + } + + dev->irq = res->start; + + ret = request_irq(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 rel_irq; + } + + 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; + 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; + + 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); +rel_irq: + free_irq(dev->irq, dev); +put_clk_gate: + clk_put(dev->gate); +put_clk: + clk_put(dev->clk); +unmap_regs: + iounmap(dev->regs); +rel_res_regs: + release_resource(dev->res_regs); +free_dev: + kfree(dev); + return ret; +} + +static int g2d_remove(struct platform_device *pdev) +{ + struct g2d_dev *dev = (struct g2d_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); + free_irq(dev->irq, dev); + clk_put(dev->gate); + clk_put(dev->clk); + iounmap(dev->regs); + release_resource(dev->res_regs); + kfree(dev); + return 0; +} + +static struct platform_driver g2d_pdrv = { + .probe = g2d_probe, + .remove = g2d_remove, + .driver = { + .name = G2D_NAME, + .owner = THIS_MODULE, + }, +}; + +module_platform_driver(g2d_pdrv); + +MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>"); +MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver"); +MODULE_LICENSE("GPL"); |