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path: root/drivers/media/video/mxc/output/mxc_pxp_v4l2.c
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Diffstat (limited to 'drivers/media/video/mxc/output/mxc_pxp_v4l2.c')
-rw-r--r--drivers/media/video/mxc/output/mxc_pxp_v4l2.c1237
1 files changed, 1237 insertions, 0 deletions
diff --git a/drivers/media/video/mxc/output/mxc_pxp_v4l2.c b/drivers/media/video/mxc/output/mxc_pxp_v4l2.c
new file mode 100644
index 000000000000..2855bb675d1d
--- /dev/null
+++ b/drivers/media/video/mxc/output/mxc_pxp_v4l2.c
@@ -0,0 +1,1237 @@
+/*
+ * Copyright (C) 2010 Freescale Semiconductor, Inc.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+/*
+ * Based on STMP378X PxP driver
+ * Copyright 2008-2009 Embedded Alley Solutions, Inc All Rights Reserved.
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/platform_device.h>
+#include <linux/vmalloc.h>
+#include <linux/videodev2.h>
+#include <linux/dmaengine.h>
+#include <linux/pxp_dma.h>
+#include <linux/delay.h>
+#include <linux/console.h>
+#include <linux/mxcfb.h>
+
+#include <media/videobuf-dma-contig.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-dev.h>
+#include <media/v4l2-ioctl.h>
+
+#include "mxc_pxp_v4l2.h"
+
+#define PXP_DRIVER_NAME "pxp-v4l2"
+#define PXP_DRIVER_MAJOR 2
+#define PXP_DRIVER_MINOR 0
+
+#define PXP_DEF_BUFS 2
+#define PXP_MIN_PIX 8
+
+#define V4L2_OUTPUT_TYPE_INTERNAL 4
+
+static struct pxp_data_format pxp_s0_formats[] = {
+ {
+ .name = "24-bit RGB",
+ .bpp = 4,
+ .fourcc = V4L2_PIX_FMT_RGB24,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ }, {
+ .name = "16-bit RGB 5:6:5",
+ .bpp = 2,
+ .fourcc = V4L2_PIX_FMT_RGB565,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ }, {
+ .name = "16-bit RGB 5:5:5",
+ .bpp = 2,
+ .fourcc = V4L2_PIX_FMT_RGB555,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ }, {
+ .name = "YUV 4:2:0 Planar",
+ .bpp = 2,
+ .fourcc = V4L2_PIX_FMT_YUV420,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ }, {
+ .name = "YUV 4:2:2 Planar",
+ .bpp = 2,
+ .fourcc = V4L2_PIX_FMT_YUV422P,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ },
+};
+
+static unsigned int v4l2_fmt_to_pxp_fmt(u32 v4l2_pix_fmt)
+{
+ u32 pxp_fmt = 0;
+
+ if (v4l2_pix_fmt == V4L2_PIX_FMT_RGB24)
+ pxp_fmt = PXP_PIX_FMT_RGB24;
+ else if (v4l2_pix_fmt == V4L2_PIX_FMT_RGB565)
+ pxp_fmt = PXP_PIX_FMT_RGB565;
+ else if (v4l2_pix_fmt == V4L2_PIX_FMT_RGB555)
+ pxp_fmt = PXP_PIX_FMT_RGB555;
+ else if (v4l2_pix_fmt == V4L2_PIX_FMT_RGB555)
+ pxp_fmt = PXP_PIX_FMT_RGB555;
+ else if (v4l2_pix_fmt == V4L2_PIX_FMT_YUV420)
+ pxp_fmt = PXP_PIX_FMT_YUV420P;
+ else if (v4l2_pix_fmt == V4L2_PIX_FMT_YUV422P)
+ pxp_fmt = PXP_PIX_FMT_YUV422P;
+
+ return pxp_fmt;
+}
+struct v4l2_queryctrl pxp_controls[] = {
+ {
+ .id = V4L2_CID_HFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Horizontal Flip",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ .flags = 0,
+ }, {
+ .id = V4L2_CID_VFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Vertical Flip",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ .flags = 0,
+ }, {
+ .id = V4L2_CID_PRIVATE_BASE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Rotation",
+ .minimum = 0,
+ .maximum = 270,
+ .step = 90,
+ .default_value = 0,
+ .flags = 0,
+ }, {
+ .id = V4L2_CID_PRIVATE_BASE + 1,
+ .name = "Background Color",
+ .minimum = 0,
+ .maximum = 0xFFFFFF,
+ .step = 1,
+ .default_value = 0,
+ .flags = 0,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ }, {
+ .id = V4L2_CID_PRIVATE_BASE + 2,
+ .name = "Set S0 Chromakey",
+ .minimum = -1,
+ .maximum = 0xFFFFFF,
+ .step = 1,
+ .default_value = -1,
+ .flags = 0,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ }, {
+ .id = V4L2_CID_PRIVATE_BASE + 3,
+ .name = "YUV Colorspace",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ .flags = 0,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ },
+};
+
+/* callback function */
+static void video_dma_done(void *arg)
+{
+ struct pxp_tx_desc *tx_desc = to_tx_desc(arg);
+ struct dma_chan *chan = tx_desc->txd.chan;
+ struct pxp_channel *pxp_chan = to_pxp_channel(chan);
+ struct pxps *pxp = pxp_chan->client;
+ struct videobuf_buffer *vb;
+
+ dev_dbg(chan->device->dev, "callback cookie %d, active DMA 0x%08x\n",
+ tx_desc->txd.cookie,
+ pxp->active ? sg_dma_address(&pxp->active->sg[0]) : 0);
+
+ spin_lock(&pxp->lock);
+ if (pxp->active) {
+ vb = &pxp->active->vb;
+
+ list_del_init(&vb->queue);
+ vb->state = VIDEOBUF_DONE;
+ do_gettimeofday(&vb->ts);
+ vb->field_count++;
+ wake_up(&vb->done);
+ }
+
+ if (list_empty(&pxp->outq)) {
+ pxp->active = NULL;
+ spin_unlock(&pxp->lock);
+
+ return;
+ }
+
+ pxp->active = list_entry(pxp->outq.next,
+ struct pxp_buffer, vb.queue);
+ pxp->active->vb.state = VIDEOBUF_ACTIVE;
+ spin_unlock(&pxp->lock);
+}
+
+static int acquire_dma_channel(struct pxps *pxp)
+{
+ dma_cap_mask_t mask;
+ struct dma_chan *chan;
+ struct pxp_channel **pchan = &pxp->pxp_channel[0];
+
+ if (*pchan) {
+ struct videobuf_buffer *vb, *_vb;
+ dma_release_channel(&(*pchan)->dma_chan);
+ *pchan = NULL;
+ pxp->active = NULL;
+ list_for_each_entry_safe(vb, _vb, &pxp->outq, queue) {
+ list_del_init(&vb->queue);
+ vb->state = VIDEOBUF_ERROR;
+ wake_up(&vb->done);
+ }
+ }
+
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
+ dma_cap_set(DMA_PRIVATE, mask);
+ chan = dma_request_channel(mask, NULL, NULL);
+ if (!chan)
+ return -EBUSY;
+
+ *pchan = to_pxp_channel(chan);
+ (*pchan)->client = pxp;
+
+ return 0;
+}
+
+static int _get_fbinfo(struct fb_info **fbi)
+{
+ int i;
+ for (i = 0; i < num_registered_fb; i++) {
+ char *idstr = registered_fb[i]->fix.id;
+ if (strcmp(idstr, "mxc_elcdif_fb") == 0) {
+ *fbi = registered_fb[i];
+ return 0;
+ }
+ }
+
+ return -ENODEV;
+}
+
+static int pxp_set_fbinfo(struct pxps *pxp)
+{
+ struct fb_info *fbi;
+ struct v4l2_framebuffer *fb = &pxp->fb;
+ int err;
+
+ err = _get_fbinfo(&fbi);
+ if (err)
+ return err;
+
+ fb->fmt.width = fbi->var.xres;
+ fb->fmt.height = fbi->var.yres;
+ if (fbi->var.bits_per_pixel == 16)
+ fb->fmt.pixelformat = V4L2_PIX_FMT_RGB565;
+ else
+ fb->fmt.pixelformat = V4L2_PIX_FMT_RGB24;
+ fb->base = (void *)fbi->fix.smem_start;
+
+ return 0;
+}
+
+static int _get_cur_fb_blank(struct pxps *pxp)
+{
+ struct fb_info *fbi;
+ mm_segment_t old_fs;
+ int err = 0;
+
+ err = _get_fbinfo(&fbi);
+ if (err)
+ return err;
+
+ if (fbi->fbops->fb_ioctl) {
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ err = fbi->fbops->fb_ioctl(fbi, MXCFB_GET_FB_BLANK,
+ (unsigned int)(&pxp->fb_blank));
+ set_fs(old_fs);
+ }
+
+ return err;
+}
+
+static int set_fb_blank(int blank)
+{
+ struct fb_info *fbi;
+ int err = 0;
+
+ err = _get_fbinfo(&fbi);
+ if (err)
+ return err;
+
+ acquire_console_sem();
+ fb_blank(fbi, blank);
+ release_console_sem();
+
+ return err;
+}
+
+static int pxp_set_cstate(struct pxps *pxp, struct v4l2_control *vc)
+{
+
+ if (vc->id == V4L2_CID_HFLIP) {
+ pxp->pxp_conf.proc_data.hflip = vc->value;
+ } else if (vc->id == V4L2_CID_VFLIP) {
+ pxp->pxp_conf.proc_data.vflip = vc->value;
+ } else if (vc->id == V4L2_CID_PRIVATE_BASE) {
+ if (vc->value % 90)
+ return -ERANGE;
+ pxp->pxp_conf.proc_data.rotate = vc->value;
+ } else if (vc->id == V4L2_CID_PRIVATE_BASE + 1) {
+ pxp->pxp_conf.proc_data.bgcolor = vc->value;
+ } else if (vc->id == V4L2_CID_PRIVATE_BASE + 2) {
+ pxp->pxp_conf.s0_param.color_key = vc->value;
+ } else if (vc->id == V4L2_CID_PRIVATE_BASE + 3) {
+ pxp->pxp_conf.proc_data.yuv = vc->value;
+ }
+
+ return 0;
+}
+
+static int pxp_get_cstate(struct pxps *pxp, struct v4l2_control *vc)
+{
+ if (vc->id == V4L2_CID_HFLIP)
+ vc->value = pxp->pxp_conf.proc_data.hflip;
+ else if (vc->id == V4L2_CID_VFLIP)
+ vc->value = pxp->pxp_conf.proc_data.vflip;
+ else if (vc->id == V4L2_CID_PRIVATE_BASE)
+ vc->value = pxp->pxp_conf.proc_data.rotate;
+ else if (vc->id == V4L2_CID_PRIVATE_BASE + 1)
+ vc->value = pxp->pxp_conf.proc_data.bgcolor;
+ else if (vc->id == V4L2_CID_PRIVATE_BASE + 2)
+ vc->value = pxp->pxp_conf.s0_param.color_key;
+ else if (vc->id == V4L2_CID_PRIVATE_BASE + 3)
+ vc->value = pxp->pxp_conf.proc_data.yuv;
+
+ return 0;
+}
+
+static int pxp_enumoutput(struct file *file, void *fh,
+ struct v4l2_output *o)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+
+ if ((o->index < 0) || (o->index > 1))
+ return -EINVAL;
+
+ memset(o, 0, sizeof(struct v4l2_output));
+ if (o->index == 0) {
+ strcpy(o->name, "PxP Display Output");
+ pxp->output = 0;
+ } else {
+ strcpy(o->name, "PxP Virtual Output");
+ pxp->output = 1;
+ }
+ o->type = V4L2_OUTPUT_TYPE_INTERNAL;
+ o->std = 0;
+ o->reserved[0] = pxp->outb_phys;
+
+ return 0;
+}
+
+static int pxp_g_output(struct file *file, void *fh,
+ unsigned int *i)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+
+ *i = pxp->output;
+
+ return 0;
+}
+
+static int pxp_s_output(struct file *file, void *fh,
+ unsigned int i)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+ struct v4l2_pix_format *fmt = &pxp->fb.fmt;
+ int bpp;
+
+ if ((i < 0) || (i > 1))
+ return -EINVAL;
+
+ if (pxp->outb)
+ return 0;
+
+ /* Output buffer is same format as fbdev */
+ if (fmt->pixelformat == V4L2_PIX_FMT_RGB24)
+ bpp = 4;
+ else
+ bpp = 2;
+
+ pxp->outb_size = fmt->width * fmt->height * bpp;
+ pxp->outb = kmalloc(fmt->width * fmt->height * bpp, GFP_KERNEL);
+ pxp->outb_phys = virt_to_phys(pxp->outb);
+ dma_map_single(NULL, pxp->outb,
+ fmt->width * fmt->height * bpp, DMA_TO_DEVICE);
+
+ pxp->pxp_conf.out_param.width = fmt->width;
+ pxp->pxp_conf.out_param.height = fmt->height;
+ if (fmt->pixelformat == V4L2_PIX_FMT_RGB24)
+ pxp->pxp_conf.out_param.pixel_fmt = PXP_PIX_FMT_RGB24;
+ else
+ pxp->pxp_conf.out_param.pixel_fmt = PXP_PIX_FMT_RGB565;
+
+ return 0;
+}
+
+static int pxp_enum_fmt_video_output(struct file *file, void *fh,
+ struct v4l2_fmtdesc *fmt)
+{
+ enum v4l2_buf_type type = fmt->type;
+ int index = fmt->index;
+
+ if ((fmt->index < 0) || (fmt->index >= ARRAY_SIZE(pxp_s0_formats)))
+ return -EINVAL;
+
+ memset(fmt, 0, sizeof(struct v4l2_fmtdesc));
+ fmt->index = index;
+ fmt->type = type;
+ fmt->pixelformat = pxp_s0_formats[index].fourcc;
+ strcpy(fmt->description, pxp_s0_formats[index].name);
+
+ return 0;
+}
+
+static int pxp_g_fmt_video_output(struct file *file, void *fh,
+ struct v4l2_format *f)
+{
+ struct v4l2_pix_format *pf = &f->fmt.pix;
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+ struct pxp_data_format *fmt = pxp->s0_fmt;
+
+ pf->width = pxp->pxp_conf.s0_param.width;
+ pf->height = pxp->pxp_conf.s0_param.height;
+ pf->pixelformat = fmt->fourcc;
+ pf->field = V4L2_FIELD_NONE;
+ pf->bytesperline = fmt->bpp * pf->width;
+ pf->sizeimage = pf->bytesperline * pf->height;
+ pf->colorspace = fmt->colorspace;
+ pf->priv = 0;
+
+ return 0;
+}
+
+static struct pxp_data_format *pxp_get_format(struct v4l2_format *f)
+{
+ struct pxp_data_format *fmt;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(pxp_s0_formats); i++) {
+ fmt = &pxp_s0_formats[i];
+ if (fmt->fourcc == f->fmt.pix.pixelformat)
+ break;
+ }
+
+ if (i == ARRAY_SIZE(pxp_s0_formats))
+ return NULL;
+
+ return &pxp_s0_formats[i];
+}
+
+static int pxp_try_fmt_video_output(struct file *file, void *fh,
+ struct v4l2_format *f)
+{
+ int w = f->fmt.pix.width;
+ int h = f->fmt.pix.height;
+ struct pxp_data_format *fmt = pxp_get_format(f);
+
+ if (!fmt)
+ return -EINVAL;
+
+ w = min(w, 2040);
+ w = max(w, 8);
+ h = min(h, 2040);
+ h = max(h, 8);
+ f->fmt.pix.field = V4L2_FIELD_NONE;
+ f->fmt.pix.width = w;
+ f->fmt.pix.height = h;
+ f->fmt.pix.pixelformat = fmt->fourcc;
+
+ return 0;
+}
+
+static int pxp_s_fmt_video_output(struct file *file, void *fh,
+ struct v4l2_format *f)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+ struct v4l2_pix_format *pf = &f->fmt.pix;
+ int ret;
+
+ ret = acquire_dma_channel(pxp);
+ if (ret < 0)
+ return ret;
+
+ ret = pxp_try_fmt_video_output(file, fh, f);
+ if (ret == 0) {
+ pxp->s0_fmt = pxp_get_format(f);
+ pxp->pxp_conf.s0_param.pixel_fmt =
+ v4l2_fmt_to_pxp_fmt(pxp->s0_fmt->fourcc);
+ pxp->pxp_conf.s0_param.width = pf->width;
+ pxp->pxp_conf.s0_param.height = pf->height;
+ }
+
+
+ return ret;
+}
+
+static int pxp_g_fmt_output_overlay(struct file *file, void *fh,
+ struct v4l2_format *f)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+ struct v4l2_window *wf = &f->fmt.win;
+
+ memset(wf, 0, sizeof(struct v4l2_window));
+ wf->chromakey = pxp->s1_chromakey;
+ wf->global_alpha = pxp->global_alpha;
+ wf->field = V4L2_FIELD_NONE;
+ wf->clips = NULL;
+ wf->clipcount = 0;
+ wf->bitmap = NULL;
+ wf->w.left = pxp->pxp_conf.proc_data.srect.left;
+ wf->w.top = pxp->pxp_conf.proc_data.srect.top;
+ wf->w.width = pxp->pxp_conf.proc_data.srect.width;
+ wf->w.height = pxp->pxp_conf.proc_data.srect.height;
+
+ return 0;
+}
+
+static int pxp_try_fmt_output_overlay(struct file *file, void *fh,
+ struct v4l2_format *f)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+ struct v4l2_window *wf = &f->fmt.win;
+ struct v4l2_rect srect;
+ u32 s1_chromakey = wf->chromakey;
+ u8 global_alpha = wf->global_alpha;
+
+ memcpy(&srect, &(wf->w), sizeof(struct v4l2_rect));
+
+ pxp_g_fmt_output_overlay(file, fh, f);
+
+ wf->chromakey = s1_chromakey;
+ wf->global_alpha = global_alpha;
+
+ /* Constrain parameters to the input buffer */
+ wf->w.left = srect.left;
+ wf->w.top = srect.top;
+ wf->w.width = min(srect.width,
+ ((__s32)pxp->pxp_conf.s0_param.width - wf->w.left));
+ wf->w.height = min(srect.height,
+ ((__s32)pxp->pxp_conf.s0_param.height - wf->w.top));
+
+ return 0;
+}
+
+static int pxp_s_fmt_output_overlay(struct file *file, void *fh,
+ struct v4l2_format *f)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+ struct v4l2_window *wf = &f->fmt.win;
+ int ret = pxp_try_fmt_output_overlay(file, fh, f);
+
+ if (ret == 0) {
+ pxp->global_alpha = wf->global_alpha;
+ pxp->s1_chromakey = wf->chromakey;
+ pxp->pxp_conf.proc_data.srect.left = wf->w.left;
+ pxp->pxp_conf.proc_data.srect.top = wf->w.top;
+ pxp->pxp_conf.proc_data.srect.width = wf->w.width;
+ pxp->pxp_conf.proc_data.srect.height = wf->w.height;
+ pxp->pxp_conf.ol_param[0].global_alpha = pxp->global_alpha;
+ pxp->pxp_conf.ol_param[0].color_key = pxp->s1_chromakey;
+ pxp->pxp_conf.ol_param[0].color_key_enable =
+ pxp->s1_chromakey_state;
+ }
+
+ return ret;
+}
+
+static int pxp_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *r)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+
+ return videobuf_reqbufs(&pxp->s0_vbq, r);
+}
+
+static int pxp_querybuf(struct file *file, void *priv,
+ struct v4l2_buffer *b)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+
+ return videobuf_querybuf(&pxp->s0_vbq, b);
+}
+
+static int pxp_qbuf(struct file *file, void *priv,
+ struct v4l2_buffer *b)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+
+ return videobuf_qbuf(&pxp->s0_vbq, b);
+}
+
+static int pxp_dqbuf(struct file *file, void *priv,
+ struct v4l2_buffer *b)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+
+ return videobuf_dqbuf(&pxp->s0_vbq, b, file->f_flags & O_NONBLOCK);
+}
+
+static int pxp_streamon(struct file *file, void *priv,
+ enum v4l2_buf_type t)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+ int ret = 0;
+
+ if (t != V4L2_BUF_TYPE_VIDEO_OUTPUT)
+ return -EINVAL;
+
+ _get_cur_fb_blank(pxp);
+ set_fb_blank(FB_BLANK_UNBLANK);
+
+ ret = videobuf_streamon(&pxp->s0_vbq);
+
+ if (!ret && (pxp->output == 0))
+ mxc_elcdif_frame_addr_setup(pxp->outb_phys);
+
+ return ret;
+}
+
+static int pxp_streamoff(struct file *file, void *priv,
+ enum v4l2_buf_type t)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+ int ret = 0;
+
+ if ((t != V4L2_BUF_TYPE_VIDEO_OUTPUT))
+ return -EINVAL;
+
+ ret = videobuf_streamoff(&pxp->s0_vbq);
+
+ if (!ret)
+ mxc_elcdif_frame_addr_setup((dma_addr_t)pxp->fb.base);
+
+ if (pxp->fb_blank)
+ set_fb_blank(FB_BLANK_POWERDOWN);
+
+ return ret;
+}
+
+static int pxp_buf_setup(struct videobuf_queue *q,
+ unsigned int *count, unsigned *size)
+{
+ struct pxps *pxp = q->priv_data;
+
+ *size = pxp->pxp_conf.s0_param.width *
+ pxp->pxp_conf.s0_param.height * pxp->s0_fmt->bpp;
+
+ if (0 == *count)
+ *count = PXP_DEF_BUFS;
+
+ return 0;
+}
+
+static void pxp_buf_free(struct videobuf_queue *q, struct pxp_buffer *buf)
+{
+ struct videobuf_buffer *vb = &buf->vb;
+ struct dma_async_tx_descriptor *txd = buf->txd;
+
+ BUG_ON(in_interrupt());
+
+ pr_debug("%s (vb=0x%p) 0x%08lx %d\n", __func__,
+ vb, vb->baddr, vb->bsize);
+
+ /*
+ * This waits until this buffer is out of danger, i.e., until it is no
+ * longer in STATE_QUEUED or STATE_ACTIVE
+ */
+ videobuf_waiton(vb, 0, 0);
+ if (txd)
+ async_tx_ack(txd);
+
+ videobuf_dma_contig_free(q, vb);
+ buf->txd = NULL;
+
+ vb->state = VIDEOBUF_NEEDS_INIT;
+}
+
+static int pxp_buf_prepare(struct videobuf_queue *q,
+ struct videobuf_buffer *vb,
+ enum v4l2_field field)
+{
+ struct pxps *pxp = q->priv_data;
+ struct pxp_config_data *pxp_conf = &pxp->pxp_conf;
+ struct pxp_proc_data *proc_data = &pxp_conf->proc_data;
+ struct pxp_buffer *buf = container_of(vb, struct pxp_buffer, vb);
+ struct pxp_tx_desc *desc;
+ int ret = 0;
+ int i, length;
+
+ vb->width = pxp->pxp_conf.s0_param.width;
+ vb->height = pxp->pxp_conf.s0_param.height;
+ vb->size = vb->width * vb->height * pxp->s0_fmt->bpp;
+ vb->field = V4L2_FIELD_NONE;
+ if (vb->state != VIDEOBUF_NEEDS_INIT)
+ pxp_buf_free(q, buf);
+
+ if (vb->state == VIDEOBUF_NEEDS_INIT) {
+ struct pxp_channel *pchan = pxp->pxp_channel[0];
+ struct scatterlist *sg = &buf->sg;
+
+ /* This actually (allocates and) maps buffers */
+ ret = videobuf_iolock(q, vb, NULL);
+ if (ret) {
+ pr_err("fail to call videobuf_iolock, ret = %d\n", ret);
+ goto fail;
+ }
+
+ /*
+ * sg[0] for input(S0)
+ * Sg[1] for output
+ */
+ sg_init_table(sg, 3);
+
+ buf->txd = pchan->dma_chan.device->device_prep_slave_sg(
+ &pchan->dma_chan, sg, 3, DMA_FROM_DEVICE,
+ DMA_PREP_INTERRUPT);
+ if (!buf->txd) {
+ ret = -EIO;
+ goto fail;
+ }
+
+ buf->txd->callback_param = buf->txd;
+ buf->txd->callback = video_dma_done;
+
+ desc = to_tx_desc(buf->txd);
+ length = desc->len;
+ for (i = 0; i < length; i++) {
+ if (i == 0) {/* S0 */
+ memcpy(&desc->proc_data, proc_data,
+ sizeof(struct pxp_proc_data));
+ pxp_conf->s0_param.paddr =
+ videobuf_to_dma_contig(vb);
+ memcpy(&desc->layer_param.s0_param,
+ &pxp_conf->s0_param,
+ sizeof(struct pxp_layer_param));
+ } else if (i == 1) { /* Output */
+ if (proc_data->rotate % 180) {
+ pxp_conf->out_param.width =
+ pxp->fb.fmt.height;
+ pxp_conf->out_param.height =
+ pxp->fb.fmt.width;
+ } else {
+ pxp_conf->out_param.width =
+ pxp->fb.fmt.width;
+ pxp_conf->out_param.height =
+ pxp->fb.fmt.height;
+ }
+
+ pxp_conf->out_param.paddr = pxp->outb_phys;
+ memcpy(&desc->layer_param.out_param,
+ &pxp_conf->out_param,
+ sizeof(struct pxp_layer_param));
+ } else if (pxp_conf->ol_param[0].combine_enable) {
+ /* Overlay */
+ pxp_conf->ol_param[0].paddr =
+ (dma_addr_t)pxp->fb.base;
+ pxp_conf->ol_param[0].width = pxp->fb.fmt.width;
+ pxp_conf->ol_param[0].height =
+ pxp->fb.fmt.height;
+ pxp_conf->ol_param[0].pixel_fmt =
+ pxp_conf->out_param.pixel_fmt;
+ memcpy(&desc->layer_param.ol_param,
+ &pxp_conf->ol_param[0],
+ sizeof(struct pxp_layer_param));
+ }
+
+ desc = desc->next;
+ }
+
+ vb->state = VIDEOBUF_PREPARED;
+ }
+
+ return 0;
+
+fail:
+ pxp_buf_free(q, buf);
+ return ret;
+}
+
+
+static void pxp_buf_queue(struct videobuf_queue *q,
+ struct videobuf_buffer *vb)
+{
+ struct pxps *pxp = q->priv_data;
+ struct pxp_buffer *buf = container_of(vb, struct pxp_buffer, vb);
+ struct dma_async_tx_descriptor *txd = buf->txd;
+ struct pxp_channel *pchan = pxp->pxp_channel[0];
+ dma_cookie_t cookie;
+
+ BUG_ON(!irqs_disabled());
+
+ list_add_tail(&vb->queue, &pxp->outq);
+
+ if (!pxp->active) {
+ pxp->active = buf;
+ vb->state = VIDEOBUF_ACTIVE;
+ } else {
+ vb->state = VIDEOBUF_QUEUED;
+ }
+
+ spin_unlock_irq(&pxp->lock);
+
+ cookie = txd->tx_submit(txd);
+ dev_dbg(&pxp->pdev->dev, "Submitted cookie %d DMA 0x%08x\n",
+ cookie, sg_dma_address(&buf->sg[0]));
+ mdelay(5);
+ /* trigger ePxP */
+ dma_async_issue_pending(&pchan->dma_chan);
+
+ spin_lock_irq(&pxp->lock);
+
+ if (cookie >= 0)
+ return;
+
+ /* Submit error */
+ pr_err("%s: Submit error\n", __func__);
+ vb->state = VIDEOBUF_PREPARED;
+
+ list_del_init(&vb->queue);
+
+ if (pxp->active == buf)
+ pxp->active = NULL;
+}
+
+static void pxp_buf_release(struct videobuf_queue *q,
+ struct videobuf_buffer *vb)
+{
+ struct pxps *pxp = q->priv_data;
+ struct pxp_buffer *buf = container_of(vb, struct pxp_buffer, vb);
+ unsigned long flags;
+
+ spin_lock_irqsave(&pxp->lock, flags);
+ if ((vb->state == VIDEOBUF_ACTIVE || vb->state == VIDEOBUF_QUEUED) &&
+ !list_empty(&vb->queue)) {
+ vb->state = VIDEOBUF_ERROR;
+
+ list_del_init(&vb->queue);
+ if (pxp->active == buf)
+ pxp->active = NULL;
+ }
+ spin_unlock_irqrestore(&pxp->lock, flags);
+
+ pxp_buf_free(q, buf);
+}
+
+static struct videobuf_queue_ops pxp_vbq_ops = {
+ .buf_setup = pxp_buf_setup,
+ .buf_prepare = pxp_buf_prepare,
+ .buf_queue = pxp_buf_queue,
+ .buf_release = pxp_buf_release,
+};
+
+static int pxp_querycap(struct file *file, void *fh,
+ struct v4l2_capability *cap)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+
+ memset(cap, 0, sizeof(*cap));
+ strcpy(cap->driver, "pxp");
+ strcpy(cap->card, "pxp");
+ strlcpy(cap->bus_info, dev_name(&pxp->pdev->dev),
+ sizeof(cap->bus_info));
+
+ cap->version = (PXP_DRIVER_MAJOR << 8) + PXP_DRIVER_MINOR;
+
+ cap->capabilities = V4L2_CAP_VIDEO_OUTPUT |
+ V4L2_CAP_VIDEO_OUTPUT_OVERLAY |
+ V4L2_CAP_STREAMING;
+
+ return 0;
+}
+
+static int pxp_g_fbuf(struct file *file, void *priv,
+ struct v4l2_framebuffer *fb)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+
+ memset(fb, 0, sizeof(*fb));
+
+ fb->capability = V4L2_FBUF_CAP_EXTERNOVERLAY |
+ V4L2_FBUF_CAP_CHROMAKEY |
+ V4L2_FBUF_CAP_LOCAL_ALPHA |
+ V4L2_FBUF_CAP_GLOBAL_ALPHA;
+
+ if (pxp->global_alpha_state)
+ fb->flags |= V4L2_FBUF_FLAG_GLOBAL_ALPHA;
+ if (pxp->s1_chromakey_state)
+ fb->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
+
+ return 0;
+}
+
+static int pxp_s_fbuf(struct file *file, void *priv,
+ struct v4l2_framebuffer *fb)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+
+ pxp->overlay_state =
+ (fb->flags & V4L2_FBUF_FLAG_OVERLAY) != 0;
+ pxp->global_alpha_state =
+ (fb->flags & V4L2_FBUF_FLAG_GLOBAL_ALPHA) != 0;
+ pxp->s1_chromakey_state =
+ (fb->flags & V4L2_FBUF_FLAG_CHROMAKEY) != 0;
+
+ pxp->pxp_conf.ol_param[0].combine_enable = pxp->overlay_state;
+ pxp->pxp_conf.ol_param[0].global_alpha_enable = pxp->global_alpha_state;
+
+ return 0;
+}
+
+static int pxp_g_crop(struct file *file, void *fh,
+ struct v4l2_crop *c)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+
+ if (c->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY)
+ return -EINVAL;
+
+ c->c.left = pxp->pxp_conf.proc_data.drect.left;
+ c->c.top = pxp->pxp_conf.proc_data.drect.top;
+ c->c.width = pxp->pxp_conf.proc_data.drect.width;
+ c->c.height = pxp->pxp_conf.proc_data.drect.height;
+
+ return 0;
+}
+
+static int pxp_s_crop(struct file *file, void *fh,
+ struct v4l2_crop *c)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+ int l = c->c.left;
+ int t = c->c.top;
+ int w = c->c.width;
+ int h = c->c.height;
+ int fbw = pxp->fb.fmt.width;
+ int fbh = pxp->fb.fmt.height;
+
+ if (c->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY)
+ return -EINVAL;
+
+ /* Constrain parameters to FB limits */
+ w = min(w, fbw);
+ w = max(w, PXP_MIN_PIX);
+ h = min(h, fbh);
+ h = max(h, PXP_MIN_PIX);
+ if ((l + w) > fbw)
+ l = 0;
+ if ((t + h) > fbh)
+ t = 0;
+
+ /* Round up values to PxP pixel block */
+ l = roundup(l, PXP_MIN_PIX);
+ t = roundup(t, PXP_MIN_PIX);
+ w = roundup(w, PXP_MIN_PIX);
+ h = roundup(h, PXP_MIN_PIX);
+
+ pxp->pxp_conf.proc_data.drect.left = l;
+ pxp->pxp_conf.proc_data.drect.top = t;
+ pxp->pxp_conf.proc_data.drect.width = w;
+ pxp->pxp_conf.proc_data.drect.height = h;
+
+ return 0;
+}
+
+static int pxp_queryctrl(struct file *file, void *priv,
+ struct v4l2_queryctrl *qc)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(pxp_controls); i++)
+ if (qc->id && qc->id == pxp_controls[i].id) {
+ memcpy(qc, &(pxp_controls[i]), sizeof(*qc));
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static int pxp_g_ctrl(struct file *file, void *priv,
+ struct v4l2_control *vc)
+{
+ int i;
+
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+
+ for (i = 0; i < ARRAY_SIZE(pxp_controls); i++)
+ if (vc->id == pxp_controls[i].id)
+ return pxp_get_cstate(pxp, vc);
+
+ return -EINVAL;
+}
+
+static int pxp_s_ctrl(struct file *file, void *priv,
+ struct v4l2_control *vc)
+{
+ int i;
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+
+ for (i = 0; i < ARRAY_SIZE(pxp_controls); i++)
+ if (vc->id == pxp_controls[i].id) {
+ if (vc->value < pxp_controls[i].minimum ||
+ vc->value > pxp_controls[i].maximum)
+ return -ERANGE;
+ return pxp_set_cstate(pxp, vc);
+ }
+
+ return -EINVAL;
+}
+
+void pxp_release(struct video_device *vfd)
+{
+ struct pxps *pxp = video_get_drvdata(vfd);
+
+ spin_lock(&pxp->lock);
+ video_device_release(vfd);
+ spin_unlock(&pxp->lock);
+}
+
+static int pxp_open(struct file *file)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+ int ret = 0;
+
+ mutex_lock(&pxp->mutex);
+ pxp->users++;
+
+ if (pxp->users > 1) {
+ pxp->users--;
+ ret = -EBUSY;
+ goto out;
+ }
+out:
+ mutex_unlock(&pxp->mutex);
+ if (ret)
+ return ret;
+
+ videobuf_queue_dma_contig_init(&pxp->s0_vbq,
+ &pxp_vbq_ops,
+ &pxp->pdev->dev,
+ &pxp->lock,
+ V4L2_BUF_TYPE_VIDEO_OUTPUT,
+ V4L2_FIELD_NONE,
+ sizeof(struct pxp_buffer),
+ pxp);
+ dev_dbg(&pxp->pdev->dev, "call pxp_open\n");
+
+ return 0;
+}
+
+static int pxp_close(struct file *file)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+
+ videobuf_stop(&pxp->s0_vbq);
+ videobuf_mmap_free(&pxp->s0_vbq);
+ pxp->active = NULL;
+ kfree(pxp->outb);
+ pxp->outb = NULL;
+
+ mutex_lock(&pxp->mutex);
+ pxp->users--;
+ mutex_unlock(&pxp->mutex);
+
+ return 0;
+}
+
+static int pxp_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct pxps *pxp = video_get_drvdata(video_devdata(file));
+ int ret;
+
+ ret = videobuf_mmap_mapper(&pxp->s0_vbq, vma);
+
+ return ret;
+}
+
+static const struct v4l2_file_operations pxp_fops = {
+ .owner = THIS_MODULE,
+ .open = pxp_open,
+ .release = pxp_close,
+ .ioctl = video_ioctl2,
+ .mmap = pxp_mmap,
+};
+
+static const struct v4l2_ioctl_ops pxp_ioctl_ops = {
+ .vidioc_querycap = pxp_querycap,
+
+ .vidioc_reqbufs = pxp_reqbufs,
+ .vidioc_querybuf = pxp_querybuf,
+ .vidioc_qbuf = pxp_qbuf,
+ .vidioc_dqbuf = pxp_dqbuf,
+
+ .vidioc_streamon = pxp_streamon,
+ .vidioc_streamoff = pxp_streamoff,
+
+ .vidioc_enum_output = pxp_enumoutput,
+ .vidioc_g_output = pxp_g_output,
+ .vidioc_s_output = pxp_s_output,
+
+ .vidioc_enum_fmt_vid_out = pxp_enum_fmt_video_output,
+ .vidioc_try_fmt_vid_out = pxp_try_fmt_video_output,
+ .vidioc_g_fmt_vid_out = pxp_g_fmt_video_output,
+ .vidioc_s_fmt_vid_out = pxp_s_fmt_video_output,
+
+ .vidioc_try_fmt_vid_out_overlay = pxp_try_fmt_output_overlay,
+ .vidioc_g_fmt_vid_out_overlay = pxp_g_fmt_output_overlay,
+ .vidioc_s_fmt_vid_out_overlay = pxp_s_fmt_output_overlay,
+
+ .vidioc_g_fbuf = pxp_g_fbuf,
+ .vidioc_s_fbuf = pxp_s_fbuf,
+
+ .vidioc_g_crop = pxp_g_crop,
+ .vidioc_s_crop = pxp_s_crop,
+
+ .vidioc_queryctrl = pxp_queryctrl,
+ .vidioc_g_ctrl = pxp_g_ctrl,
+ .vidioc_s_ctrl = pxp_s_ctrl,
+};
+
+static const struct video_device pxp_template = {
+ .name = "PxP",
+ .vfl_type = V4L2_CAP_VIDEO_OUTPUT |
+ V4L2_CAP_VIDEO_OVERLAY |
+ V4L2_CAP_STREAMING,
+ .fops = &pxp_fops,
+ .release = pxp_release,
+ .minor = -1,
+ .ioctl_ops = &pxp_ioctl_ops,
+};
+
+static int pxp_probe(struct platform_device *pdev)
+{
+ struct pxps *pxp;
+ int err = 0;
+
+ pxp = kzalloc(sizeof(*pxp), GFP_KERNEL);
+ if (!pxp) {
+ dev_err(&pdev->dev, "failed to allocate control object\n");
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ dev_set_drvdata(&pdev->dev, pxp);
+
+ INIT_LIST_HEAD(&pxp->outq);
+ spin_lock_init(&pxp->lock);
+ mutex_init(&pxp->mutex);
+
+ pxp->pdev = pdev;
+
+ pxp->vdev = video_device_alloc();
+ if (!pxp->vdev) {
+ dev_err(&pdev->dev, "video_device_alloc() failed\n");
+ err = -ENOMEM;
+ goto freeirq;
+ }
+
+ memcpy(pxp->vdev, &pxp_template, sizeof(pxp_template));
+ video_set_drvdata(pxp->vdev, pxp);
+
+ err = video_register_device(pxp->vdev, VFL_TYPE_GRABBER, 0);
+ if (err) {
+ dev_err(&pdev->dev, "failed to register video device\n");
+ goto freevdev;
+ }
+
+ err = pxp_set_fbinfo(pxp);
+ if (err) {
+ dev_err(&pdev->dev, "failed to call pxp_set_fbinfo\n");
+ goto freevdev;
+ }
+
+ dev_info(&pdev->dev, "initialized\n");
+
+exit:
+ return err;
+
+freevdev:
+ video_device_release(pxp->vdev);
+
+freeirq:
+ kfree(pxp);
+
+ return err;
+}
+
+static int __devexit pxp_remove(struct platform_device *pdev)
+{
+ struct pxps *pxp = platform_get_drvdata(pdev);
+
+ video_unregister_device(pxp->vdev);
+ video_device_release(pxp->vdev);
+
+ kfree(pxp);
+
+ return 0;
+}
+
+static struct platform_driver pxp_driver = {
+ .driver = {
+ .name = PXP_DRIVER_NAME,
+ },
+ .probe = pxp_probe,
+ .remove = __exit_p(pxp_remove),
+};
+
+
+static int __devinit pxp_init(void)
+{
+ return platform_driver_register(&pxp_driver);
+}
+
+static void __exit pxp_exit(void)
+{
+ platform_driver_unregister(&pxp_driver);
+}
+
+module_init(pxp_init);
+module_exit(pxp_exit);
+
+MODULE_DESCRIPTION("MXC PxP V4L2 driver");
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.0.4) at 2024-04-26 17:27:16 +0000