--- /dev/null
+/*
+ * 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;
+ 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,
+ },
+};
+
+static void __exit g2d_exit(void)
+{
+ platform_driver_unregister(&g2d_pdrv);
+};
+
+static int __init g2d_init(void)
+{
+ int ret = 0;
+
+ ret = platform_driver_register(&g2d_pdrv);
+ return ret;
+};
+
+module_init(g2d_init);
+module_exit(g2d_exit);
+
+MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
+MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver");
+MODULE_LICENSE("GPL");
projects / platform / kernel / linux-exynos.git / commitdiff