diff options
Diffstat (limited to 'drivers/media/video/davinci/vpif_display.c')
| -rw-r--r-- | drivers/media/video/davinci/vpif_display.c | 1998 |
1 files changed, 0 insertions, 1998 deletions
diff --git a/drivers/media/video/davinci/vpif_display.c b/drivers/media/video/davinci/vpif_display.c deleted file mode 100644 index e129c98..0000000 --- a/drivers/media/video/davinci/vpif_display.c +++ /dev/null @@ -1,1998 +0,0 @@ -/* - * vpif-display - VPIF display driver - * Display driver for TI DaVinci VPIF - * - * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.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 version 2. - * - * This program is distributed .as is. WITHOUT ANY WARRANTY of any - * kind, whether express or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/module.h> -#include <linux/errno.h> -#include <linux/fs.h> -#include <linux/mm.h> -#include <linux/interrupt.h> -#include <linux/workqueue.h> -#include <linux/string.h> -#include <linux/videodev2.h> -#include <linux/wait.h> -#include <linux/time.h> -#include <linux/i2c.h> -#include <linux/platform_device.h> -#include <linux/io.h> -#include <linux/slab.h> - -#include <asm/irq.h> -#include <asm/page.h> - -#include <media/adv7343.h> -#include <media/v4l2-device.h> -#include <media/v4l2-ioctl.h> -#include <media/v4l2-chip-ident.h> - -#include "vpif_display.h" -#include "vpif.h" - -MODULE_DESCRIPTION("TI DaVinci VPIF Display driver"); -MODULE_LICENSE("GPL"); -MODULE_VERSION(VPIF_DISPLAY_VERSION); - -#define VPIF_V4L2_STD (V4L2_STD_525_60 | V4L2_STD_625_50) - -#define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg) -#define vpif_dbg(level, debug, fmt, arg...) \ - v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg) - -static int debug = 1; -static u32 ch2_numbuffers = 3; -static u32 ch3_numbuffers = 3; -static u32 ch2_bufsize = 1920 * 1080 * 2; -static u32 ch3_bufsize = 720 * 576 * 2; - -module_param(debug, int, 0644); -module_param(ch2_numbuffers, uint, S_IRUGO); -module_param(ch3_numbuffers, uint, S_IRUGO); -module_param(ch2_bufsize, uint, S_IRUGO); -module_param(ch3_bufsize, uint, S_IRUGO); - -MODULE_PARM_DESC(debug, "Debug level 0-1"); -MODULE_PARM_DESC(ch2_numbuffers, "Channel2 buffer count (default:3)"); -MODULE_PARM_DESC(ch3_numbuffers, "Channel3 buffer count (default:3)"); -MODULE_PARM_DESC(ch2_bufsize, "Channel2 buffer size (default:1920 x 1080 x 2)"); -MODULE_PARM_DESC(ch3_bufsize, "Channel3 buffer size (default:720 x 576 x 2)"); - -static struct vpif_config_params config_params = { - .min_numbuffers = 3, - .numbuffers[0] = 3, - .numbuffers[1] = 3, - .min_bufsize[0] = 720 * 480 * 2, - .min_bufsize[1] = 720 * 480 * 2, - .channel_bufsize[0] = 1920 * 1080 * 2, - .channel_bufsize[1] = 720 * 576 * 2, -}; - -static struct vpif_device vpif_obj = { {NULL} }; -static struct device *vpif_dev; -static void vpif_calculate_offsets(struct channel_obj *ch); -static void vpif_config_addr(struct channel_obj *ch, int muxmode); - -/* - * buffer_prepare: This is the callback function called from vb2_qbuf() - * function the buffer is prepared and user space virtual address is converted - * into physical address - */ -static int vpif_buffer_prepare(struct vb2_buffer *vb) -{ - struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue); - struct vb2_queue *q = vb->vb2_queue; - struct common_obj *common; - unsigned long addr; - - common = &fh->channel->common[VPIF_VIDEO_INDEX]; - if (vb->state != VB2_BUF_STATE_ACTIVE && - vb->state != VB2_BUF_STATE_PREPARED) { - vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage); - if (vb2_plane_vaddr(vb, 0) && - vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) - goto buf_align_exit; - - addr = vb2_dma_contig_plane_dma_addr(vb, 0); - if (q->streaming && - (V4L2_BUF_TYPE_SLICED_VBI_OUTPUT != q->type)) { - if (!ISALIGNED(addr + common->ytop_off) || - !ISALIGNED(addr + common->ybtm_off) || - !ISALIGNED(addr + common->ctop_off) || - !ISALIGNED(addr + common->cbtm_off)) - goto buf_align_exit; - } - } - return 0; - -buf_align_exit: - vpif_err("buffer offset not aligned to 8 bytes\n"); - return -EINVAL; -} - -/* - * vpif_buffer_queue_setup: This function allocates memory for the buffers - */ -static int vpif_buffer_queue_setup(struct vb2_queue *vq, - const struct v4l2_format *fmt, - unsigned int *nbuffers, unsigned int *nplanes, - unsigned int sizes[], void *alloc_ctxs[]) -{ - struct vpif_fh *fh = vb2_get_drv_priv(vq); - struct channel_obj *ch = fh->channel; - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - unsigned long size; - - if (V4L2_MEMORY_MMAP == common->memory) { - size = config_params.channel_bufsize[ch->channel_id]; - /* - * Checking if the buffer size exceeds the available buffer - * ycmux_mode = 0 means 1 channel mode HD and - * ycmux_mode = 1 means 2 channels mode SD - */ - if (ch->vpifparams.std_info.ycmux_mode == 0) { - if (config_params.video_limit[ch->channel_id]) - while (size * *nbuffers > - (config_params.video_limit[0] - + config_params.video_limit[1])) - (*nbuffers)--; - } else { - if (config_params.video_limit[ch->channel_id]) - while (size * *nbuffers > - config_params.video_limit[ch->channel_id]) - (*nbuffers)--; - } - } else { - size = common->fmt.fmt.pix.sizeimage; - } - - if (*nbuffers < config_params.min_numbuffers) - *nbuffers = config_params.min_numbuffers; - - *nplanes = 1; - sizes[0] = size; - alloc_ctxs[0] = common->alloc_ctx; - return 0; -} - -/* - * vpif_buffer_queue: This function adds the buffer to DMA queue - */ -static void vpif_buffer_queue(struct vb2_buffer *vb) -{ - struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue); - struct vpif_disp_buffer *buf = container_of(vb, - struct vpif_disp_buffer, vb); - struct channel_obj *ch = fh->channel; - struct common_obj *common; - - common = &ch->common[VPIF_VIDEO_INDEX]; - - /* add the buffer to the DMA queue */ - list_add_tail(&buf->list, &common->dma_queue); -} - -/* - * vpif_buf_cleanup: This function is called from the videobuf2 layer to - * free memory allocated to the buffers - */ -static void vpif_buf_cleanup(struct vb2_buffer *vb) -{ - struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue); - struct vpif_disp_buffer *buf = container_of(vb, - struct vpif_disp_buffer, vb); - struct channel_obj *ch = fh->channel; - struct common_obj *common; - unsigned long flags; - - common = &ch->common[VPIF_VIDEO_INDEX]; - - spin_lock_irqsave(&common->irqlock, flags); - if (vb->state == VB2_BUF_STATE_ACTIVE) - list_del_init(&buf->list); - spin_unlock_irqrestore(&common->irqlock, flags); -} - -static void vpif_wait_prepare(struct vb2_queue *vq) -{ - struct vpif_fh *fh = vb2_get_drv_priv(vq); - struct channel_obj *ch = fh->channel; - struct common_obj *common; - - common = &ch->common[VPIF_VIDEO_INDEX]; - mutex_unlock(&common->lock); -} - -static void vpif_wait_finish(struct vb2_queue *vq) -{ - struct vpif_fh *fh = vb2_get_drv_priv(vq); - struct channel_obj *ch = fh->channel; - struct common_obj *common; - - common = &ch->common[VPIF_VIDEO_INDEX]; - mutex_lock(&common->lock); -} - -static int vpif_buffer_init(struct vb2_buffer *vb) -{ - struct vpif_disp_buffer *buf = container_of(vb, - struct vpif_disp_buffer, vb); - - INIT_LIST_HEAD(&buf->list); - - return 0; -} - -static u8 channel_first_int[VPIF_NUMOBJECTS][2] = { {1, 1} }; - -static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count) -{ - struct vpif_display_config *vpif_config_data = - vpif_dev->platform_data; - struct vpif_fh *fh = vb2_get_drv_priv(vq); - struct channel_obj *ch = fh->channel; - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - struct vpif_params *vpif = &ch->vpifparams; - unsigned long addr = 0; - int ret; - - /* If buffer queue is empty, return error */ - if (list_empty(&common->dma_queue)) { - vpif_err("buffer queue is empty\n"); - return -EIO; - } - - /* Get the next frame from the buffer queue */ - common->next_frm = common->cur_frm = - list_entry(common->dma_queue.next, - struct vpif_disp_buffer, list); - - list_del(&common->cur_frm->list); - /* Mark state of the current frame to active */ - common->cur_frm->vb.state = VB2_BUF_STATE_ACTIVE; - - /* Initialize field_id and started member */ - ch->field_id = 0; - common->started = 1; - addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb, 0); - /* Calculate the offset for Y and C data in the buffer */ - vpif_calculate_offsets(ch); - - if ((ch->vpifparams.std_info.frm_fmt && - ((common->fmt.fmt.pix.field != V4L2_FIELD_NONE) - && (common->fmt.fmt.pix.field != V4L2_FIELD_ANY))) - || (!ch->vpifparams.std_info.frm_fmt - && (common->fmt.fmt.pix.field == V4L2_FIELD_NONE))) { - vpif_err("conflict in field format and std format\n"); - return -EINVAL; - } - - /* clock settings */ - ret = - vpif_config_data->set_clock(ch->vpifparams.std_info.ycmux_mode, - ch->vpifparams.std_info.hd_sd); - if (ret < 0) { - vpif_err("can't set clock\n"); - return ret; - } - - /* set the parameters and addresses */ - ret = vpif_set_video_params(vpif, ch->channel_id + 2); - if (ret < 0) - return ret; - - common->started = ret; - vpif_config_addr(ch, ret); - common->set_addr((addr + common->ytop_off), - (addr + common->ybtm_off), - (addr + common->ctop_off), - (addr + common->cbtm_off)); - - /* Set interrupt for both the fields in VPIF - Register enable channel in VPIF register */ - if (VPIF_CHANNEL2_VIDEO == ch->channel_id) { - channel2_intr_assert(); - channel2_intr_enable(1); - enable_channel2(1); - if (vpif_config_data->ch2_clip_en) - channel2_clipping_enable(1); - } - - if ((VPIF_CHANNEL3_VIDEO == ch->channel_id) - || (common->started == 2)) { - channel3_intr_assert(); - channel3_intr_enable(1); - enable_channel3(1); - if (vpif_config_data->ch3_clip_en) - channel3_clipping_enable(1); - } - channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1; - - return 0; -} - -/* abort streaming and wait for last buffer */ -static int vpif_stop_streaming(struct vb2_queue *vq) -{ - struct vpif_fh *fh = vb2_get_drv_priv(vq); - struct channel_obj *ch = fh->channel; - struct common_obj *common; - - if (!vb2_is_streaming(vq)) - return 0; - - common = &ch->common[VPIF_VIDEO_INDEX]; - - /* release all active buffers */ - while (!list_empty(&common->dma_queue)) { - common->next_frm = list_entry(common->dma_queue.next, - struct vpif_disp_buffer, list); - list_del(&common->next_frm->list); - vb2_buffer_done(&common->next_frm->vb, VB2_BUF_STATE_ERROR); - } - - return 0; -} - -static struct vb2_ops video_qops = { - .queue_setup = vpif_buffer_queue_setup, - .wait_prepare = vpif_wait_prepare, - .wait_finish = vpif_wait_finish, - .buf_init = vpif_buffer_init, - .buf_prepare = vpif_buffer_prepare, - .start_streaming = vpif_start_streaming, - .stop_streaming = vpif_stop_streaming, - .buf_cleanup = vpif_buf_cleanup, - .buf_queue = vpif_buffer_queue, -}; - -static void process_progressive_mode(struct common_obj *common) -{ - unsigned long addr = 0; - - /* Get the next buffer from buffer queue */ - common->next_frm = list_entry(common->dma_queue.next, - struct vpif_disp_buffer, list); - /* Remove that buffer from the buffer queue */ - list_del(&common->next_frm->list); - /* Mark status of the buffer as active */ - common->next_frm->vb.state = VB2_BUF_STATE_ACTIVE; - - /* Set top and bottom field addrs in VPIF registers */ - addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb, 0); - common->set_addr(addr + common->ytop_off, - addr + common->ybtm_off, - addr + common->ctop_off, - addr + common->cbtm_off); -} - -static void process_interlaced_mode(int fid, struct common_obj *common) -{ - /* device field id and local field id are in sync */ - /* If this is even field */ - if (0 == fid) { - if (common->cur_frm == common->next_frm) - return; - - /* one frame is displayed If next frame is - * available, release cur_frm and move on */ - /* Copy frame display time */ - do_gettimeofday(&common->cur_frm->vb.v4l2_buf.timestamp); - /* Change status of the cur_frm */ - vb2_buffer_done(&common->cur_frm->vb, - VB2_BUF_STATE_DONE); - /* Make cur_frm pointing to next_frm */ - common->cur_frm = common->next_frm; - - } else if (1 == fid) { /* odd field */ - if (list_empty(&common->dma_queue) - || (common->cur_frm != common->next_frm)) { - return; - } - /* one field is displayed configure the next - * frame if it is available else hold on current - * frame */ - /* Get next from the buffer queue */ - process_progressive_mode(common); - - } -} - -/* - * vpif_channel_isr: It changes status of the displayed buffer, takes next - * buffer from the queue and sets its address in VPIF registers - */ -static irqreturn_t vpif_channel_isr(int irq, void *dev_id) -{ - struct vpif_device *dev = &vpif_obj; - struct channel_obj *ch; - struct common_obj *common; - enum v4l2_field field; - int fid = -1, i; - int channel_id = 0; - - channel_id = *(int *)(dev_id); - if (!vpif_intr_status(channel_id + 2)) - return IRQ_NONE; - - ch = dev->dev[channel_id]; - field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field; - for (i = 0; i < VPIF_NUMOBJECTS; i++) { - common = &ch->common[i]; - /* If streaming is started in this channel */ - if (0 == common->started) - continue; - - if (1 == ch->vpifparams.std_info.frm_fmt) { - if (list_empty(&common->dma_queue)) - continue; - - /* Progressive mode */ - if (!channel_first_int[i][channel_id]) { - /* Mark status of the cur_frm to - * done and unlock semaphore on it */ - do_gettimeofday(&common->cur_frm->vb. - v4l2_buf.timestamp); - vb2_buffer_done(&common->cur_frm->vb, - VB2_BUF_STATE_DONE); - /* Make cur_frm pointing to next_frm */ - common->cur_frm = common->next_frm; - } - - channel_first_int[i][channel_id] = 0; - process_progressive_mode(common); - } else { - /* Interlaced mode */ - /* If it is first interrupt, ignore it */ - - if (channel_first_int[i][channel_id]) { - channel_first_int[i][channel_id] = 0; - continue; - } - - if (0 == i) { - ch->field_id ^= 1; - /* Get field id from VPIF registers */ - fid = vpif_channel_getfid(ch->channel_id + 2); - /* If fid does not match with stored field id */ - if (fid != ch->field_id) { - /* Make them in sync */ - if (0 == fid) - ch->field_id = fid; - - return IRQ_HANDLED; - } - } - process_interlaced_mode(fid, common); - } - } - - return IRQ_HANDLED; -} - -static int vpif_update_std_info(struct channel_obj *ch) -{ - struct video_obj *vid_ch = &ch->video; - struct vpif_params *vpifparams = &ch->vpifparams; - struct vpif_channel_config_params *std_info = &vpifparams->std_info; - const struct vpif_channel_config_params *config; - - int i; - - for (i = 0; i < vpif_ch_params_count; i++) { - config = &ch_params[i]; - if (config->hd_sd == 0) { - vpif_dbg(2, debug, "SD format\n"); - if (config->stdid & vid_ch->stdid) { - memcpy(std_info, config, sizeof(*config)); - break; - } - } else { - vpif_dbg(2, debug, "HD format\n"); - if (config->dv_preset == vid_ch->dv_preset) { - memcpy(std_info, config, sizeof(*config)); - break; - } - } - } - - if (i == vpif_ch_params_count) { - vpif_dbg(1, debug, "Format not found\n"); - return -EINVAL; - } - - return 0; -} - -static int vpif_update_resolution(struct channel_obj *ch) -{ - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - struct video_obj *vid_ch = &ch->video; - struct vpif_params *vpifparams = &ch->vpifparams; - struct vpif_channel_config_params *std_info = &vpifparams->std_info; - - if (!vid_ch->stdid && !vid_ch->dv_preset && !vid_ch->bt_timings.height) - return -EINVAL; - - if (vid_ch->stdid || vid_ch->dv_preset) { - if (vpif_update_std_info(ch)) - return -EINVAL; - } - - common->fmt.fmt.pix.width = std_info->width; - common->fmt.fmt.pix.height = std_info->height; - vpif_dbg(1, debug, "Pixel details: Width = %d,Height = %d\n", - common->fmt.fmt.pix.width, common->fmt.fmt.pix.height); - - /* Set height and width paramateres */ - common->height = std_info->height; - common->width = std_info->width; - - return 0; -} - -/* - * vpif_calculate_offsets: This function calculates buffers offset for Y and C - * in the top and bottom field - */ -static void vpif_calculate_offsets(struct channel_obj *ch) -{ - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - struct vpif_params *vpifparams = &ch->vpifparams; - enum v4l2_field field = common->fmt.fmt.pix.field; - struct video_obj *vid_ch = &ch->video; - unsigned int hpitch, vpitch, sizeimage; - - if (V4L2_FIELD_ANY == common->fmt.fmt.pix.field) { - if (ch->vpifparams.std_info.frm_fmt) - vid_ch->buf_field = V4L2_FIELD_NONE; - else - vid_ch->buf_field = V4L2_FIELD_INTERLACED; - } else { - vid_ch->buf_field = common->fmt.fmt.pix.field; - } - - sizeimage = common->fmt.fmt.pix.sizeimage; - - hpitch = common->fmt.fmt.pix.bytesperline; - vpitch = sizeimage / (hpitch * 2); - if ((V4L2_FIELD_NONE == vid_ch->buf_field) || - (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) { - common->ytop_off = 0; - common->ybtm_off = hpitch; - common->ctop_off = sizeimage / 2; - common->cbtm_off = sizeimage / 2 + hpitch; - } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) { - common->ytop_off = 0; - common->ybtm_off = sizeimage / 4; - common->ctop_off = sizeimage / 2; - common->cbtm_off = common->ctop_off + sizeimage / 4; - } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) { - common->ybtm_off = 0; - common->ytop_off = sizeimage / 4; - common->cbtm_off = sizeimage / 2; - common->ctop_off = common->cbtm_off + sizeimage / 4; - } - - if ((V4L2_FIELD_NONE == vid_ch->buf_field) || - (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) { - vpifparams->video_params.storage_mode = 1; - } else { - vpifparams->video_params.storage_mode = 0; - } - - if (ch->vpifparams.std_info.frm_fmt == 1) { - vpifparams->video_params.hpitch = - common->fmt.fmt.pix.bytesperline; - } else { - if ((field == V4L2_FIELD_ANY) || - (field == V4L2_FIELD_INTERLACED)) - vpifparams->video_params.hpitch = - common->fmt.fmt.pix.bytesperline * 2; - else - vpifparams->video_params.hpitch = - common->fmt.fmt.pix.bytesperline; - } - - ch->vpifparams.video_params.stdid = ch->vpifparams.std_info.stdid; -} - -static void vpif_config_format(struct channel_obj *ch) -{ - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - - common->fmt.fmt.pix.field = V4L2_FIELD_ANY; - if (config_params.numbuffers[ch->channel_id] == 0) - common->memory = V4L2_MEMORY_USERPTR; - else - common->memory = V4L2_MEMORY_MMAP; - - common->fmt.fmt.pix.sizeimage = - config_params.channel_bufsize[ch->channel_id]; - common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P; - common->fmt.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; -} - -static int vpif_check_format(struct channel_obj *ch, - struct v4l2_pix_format *pixfmt) -{ - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - enum v4l2_field field = pixfmt->field; - u32 sizeimage, hpitch, vpitch; - - if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P) - goto invalid_fmt_exit; - - if (!(VPIF_VALID_FIELD(field))) - goto invalid_fmt_exit; - - if (pixfmt->bytesperline <= 0) - goto invalid_pitch_exit; - - sizeimage = pixfmt->sizeimage; - - if (vpif_update_resolution(ch)) - return -EINVAL; - - hpitch = pixfmt->bytesperline; - vpitch = sizeimage / (hpitch * 2); - - /* Check for valid value of pitch */ - if ((hpitch < ch->vpifparams.std_info.width) || - (vpitch < ch->vpifparams.std_info.height)) - goto invalid_pitch_exit; - - /* Check for 8 byte alignment */ - if (!ISALIGNED(hpitch)) { - vpif_err("invalid pitch alignment\n"); - return -EINVAL; - } - pixfmt->width = common->fmt.fmt.pix.width; - pixfmt->height = common->fmt.fmt.pix.height; - - return 0; - -invalid_fmt_exit: - vpif_err("invalid field format\n"); - return -EINVAL; - -invalid_pitch_exit: - vpif_err("invalid pitch\n"); - return -EINVAL; -} - -static void vpif_config_addr(struct channel_obj *ch, int muxmode) -{ - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - - if (VPIF_CHANNEL3_VIDEO == ch->channel_id) { - common->set_addr = ch3_set_videobuf_addr; - } else { - if (2 == muxmode) - common->set_addr = ch2_set_videobuf_addr_yc_nmux; - else - common->set_addr = ch2_set_videobuf_addr; - } -} - -/* - * vpif_mmap: It is used to map kernel space buffers into user spaces - */ -static int vpif_mmap(struct file *filep, struct vm_area_struct *vma) -{ - struct vpif_fh *fh = filep->private_data; - struct channel_obj *ch = fh->channel; - struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]); - - vpif_dbg(2, debug, "vpif_mmap\n"); - - return vb2_mmap(&common->buffer_queue, vma); -} - -/* - * vpif_poll: It is used for select/poll system call - */ -static unsigned int vpif_poll(struct file *filep, poll_table *wait) -{ - struct vpif_fh *fh = filep->private_data; - struct channel_obj *ch = fh->channel; - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - - if (common->started) - return vb2_poll(&common->buffer_queue, filep, wait); - - return 0; -} - -/* - * vpif_open: It creates object of file handle structure and stores it in - * private_data member of filepointer - */ -static int vpif_open(struct file *filep) -{ - struct video_device *vdev = video_devdata(filep); - struct channel_obj *ch = NULL; - struct vpif_fh *fh = NULL; - - ch = video_get_drvdata(vdev); - /* Allocate memory for the file handle object */ - fh = kzalloc(sizeof(struct vpif_fh), GFP_KERNEL); - if (fh == NULL) { - vpif_err("unable to allocate memory for file handle object\n"); - return -ENOMEM; - } - - /* store pointer to fh in private_data member of filep */ - filep->private_data = fh; - fh->channel = ch; - fh->initialized = 0; - if (!ch->initialized) { - fh->initialized = 1; - ch->initialized = 1; - memset(&ch->vpifparams, 0, sizeof(ch->vpifparams)); - } - - /* Increment channel usrs counter */ - atomic_inc(&ch->usrs); - /* Set io_allowed[VPIF_VIDEO_INDEX] member to false */ - fh->io_allowed[VPIF_VIDEO_INDEX] = 0; - /* Initialize priority of this instance to default priority */ - fh->prio = V4L2_PRIORITY_UNSET; - v4l2_prio_open(&ch->prio, &fh->prio); - - return 0; -} - -/* - * vpif_release: This function deletes buffer queue, frees the buffers and - * the vpif file handle - */ -static int vpif_release(struct file *filep) -{ - struct vpif_fh *fh = filep->private_data; - struct channel_obj *ch = fh->channel; - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - - /* if this instance is doing IO */ - if (fh->io_allowed[VPIF_VIDEO_INDEX]) { - /* Reset io_usrs member of channel object */ - common->io_usrs = 0; - /* Disable channel */ - if (VPIF_CHANNEL2_VIDEO == ch->channel_id) { - enable_channel2(0); - channel2_intr_enable(0); - } - if ((VPIF_CHANNEL3_VIDEO == ch->channel_id) || - (2 == common->started)) { - enable_channel3(0); - channel3_intr_enable(0); - } - common->started = 0; - - /* Free buffers allocated */ - vb2_queue_release(&common->buffer_queue); - vb2_dma_contig_cleanup_ctx(common->alloc_ctx); - - common->numbuffers = - config_params.numbuffers[ch->channel_id]; - } - - /* Decrement channel usrs counter */ - atomic_dec(&ch->usrs); - /* If this file handle has initialize encoder device, reset it */ - if (fh->initialized) - ch->initialized = 0; - - /* Close the priority */ - v4l2_prio_close(&ch->prio, fh->prio); - filep->private_data = NULL; - fh->initialized = 0; - kfree(fh); - - return 0; -} - -/* functions implementing ioctls */ -/** - * vpif_querycap() - QUERYCAP handler - * @file: file ptr - * @priv: file handle - * @cap: ptr to v4l2_capability structure - */ -static int vpif_querycap(struct file *file, void *priv, - struct v4l2_capability *cap) -{ - struct vpif_display_config *config = vpif_dev->platform_data; - - cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; - strlcpy(cap->driver, "vpif display", sizeof(cap->driver)); - strlcpy(cap->bus_info, "Platform", sizeof(cap->bus_info)); - strlcpy(cap->card, config->card_name, sizeof(cap->card)); - - return 0; -} - -static int vpif_enum_fmt_vid_out(struct file *file, void *priv, - struct v4l2_fmtdesc *fmt) -{ - if (fmt->index != 0) { - vpif_err("Invalid format index\n"); - return -EINVAL; - } - - /* Fill in the information about format */ - fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; - strcpy(fmt->description, "YCbCr4:2:2 YC Planar"); - fmt->pixelformat = V4L2_PIX_FMT_YUV422P; - - return 0; -} - -static int vpif_g_fmt_vid_out(struct file *file, void *priv, - struct v4l2_format *fmt) -{ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - - /* Check the validity of the buffer type */ - if (common->fmt.type != fmt->type) - return -EINVAL; - - if (vpif_update_resolution(ch)) - return -EINVAL; - *fmt = common->fmt; - return 0; -} - -static int vpif_s_fmt_vid_out(struct file *file, void *priv, - struct v4l2_format *fmt) -{ - struct vpif_fh *fh = priv; - struct v4l2_pix_format *pixfmt; - struct channel_obj *ch = fh->channel; - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - int ret = 0; - - if ((VPIF_CHANNEL2_VIDEO == ch->channel_id) - || (VPIF_CHANNEL3_VIDEO == ch->channel_id)) { - if (!fh->initialized) { - vpif_dbg(1, debug, "Channel Busy\n"); - return -EBUSY; - } - - /* Check for the priority */ - ret = v4l2_prio_check(&ch->prio, fh->prio); - if (0 != ret) - return ret; - fh->initialized = 1; - } - - if (common->started) { - vpif_dbg(1, debug, "Streaming in progress\n"); - return -EBUSY; - } - - pixfmt = &fmt->fmt.pix; - /* Check for valid field format */ - ret = vpif_check_format(ch, pixfmt); - if (ret) - return ret; - - /* store the pix format in the channel object */ - common->fmt.fmt.pix = *pixfmt; - /* store the format in the channel object */ - common->fmt = *fmt; - return 0; -} - -static int vpif_try_fmt_vid_out(struct file *file, void *priv, - struct v4l2_format *fmt) -{ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - struct v4l2_pix_format *pixfmt = &fmt->fmt.pix; - int ret = 0; - - ret = vpif_check_format(ch, pixfmt); - if (ret) { - *pixfmt = common->fmt.fmt.pix; - pixfmt->sizeimage = pixfmt->width * pixfmt->height * 2; - } - - return ret; -} - -static int vpif_reqbufs(struct file *file, void *priv, - struct v4l2_requestbuffers *reqbuf) -{ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - struct common_obj *common; - enum v4l2_field field; - struct vb2_queue *q; - u8 index = 0; - - /* This file handle has not initialized the channel, - It is not allowed to do settings */ - if ((VPIF_CHANNEL2_VIDEO == ch->channel_id) - || (VPIF_CHANNEL3_VIDEO == ch->channel_id)) { - if (!fh->initialized) { - vpif_err("Channel Busy\n"); - return -EBUSY; - } - } - - if (V4L2_BUF_TYPE_VIDEO_OUTPUT != reqbuf->type) - return -EINVAL; - - index = VPIF_VIDEO_INDEX; - - common = &ch->common[index]; - - if (common->fmt.type != reqbuf->type || !vpif_dev) - return -EINVAL; - if (0 != common->io_usrs) - return -EBUSY; - - if (reqbuf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { - if (common->fmt.fmt.pix.field == V4L2_FIELD_ANY) - field = V4L2_FIELD_INTERLACED; - else - field = common->fmt.fmt.pix.field; - } else { - field = V4L2_VBI_INTERLACED; - } - /* Initialize videobuf2 queue as per the buffer type */ - common->alloc_ctx = vb2_dma_contig_init_ctx(vpif_dev); - if (!common->alloc_ctx) { - vpif_err("Failed to get the context\n"); - return -EINVAL; - } - q = &common->buffer_queue; - q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; - q->io_modes = VB2_MMAP | VB2_USERPTR; - q->drv_priv = fh; - q->ops = &video_qops; - q->mem_ops = &vb2_dma_contig_memops; - q->buf_struct_size = sizeof(struct vpif_disp_buffer); - - vb2_queue_init(q); - - /* Set io allowed member of file handle to TRUE */ - fh->io_allowed[index] = 1; - /* Increment io usrs member of channel object to 1 */ - common->io_usrs = 1; - /* Store type of memory requested in channel object */ - common->memory = reqbuf->memory; - INIT_LIST_HEAD(&common->dma_queue); - /* Allocate buffers */ - return vb2_reqbufs(&common->buffer_queue, reqbuf); -} - -static int vpif_querybuf(struct file *file, void *priv, - struct v4l2_buffer *tbuf) -{ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - - if (common->fmt.type != tbuf->type) - return -EINVAL; - - return vb2_querybuf(&common->buffer_queue, tbuf); -} - -static int vpif_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) -{ - struct vpif_fh *fh = NULL; - struct channel_obj *ch = NULL; - struct common_obj *common = NULL; - - if (!buf || !priv) - return -EINVAL; - - fh = priv; - ch = fh->channel; - if (!ch) - return -EINVAL; - - common = &(ch->common[VPIF_VIDEO_INDEX]); - if (common->fmt.type != buf->type) - return -EINVAL; - - if (!fh->io_allowed[VPIF_VIDEO_INDEX]) { - vpif_err("fh->io_allowed\n"); - return -EACCES; - } - - return vb2_qbuf(&common->buffer_queue, buf); -} - -static int vpif_s_std(struct file *file, void *priv, v4l2_std_id *std_id) -{ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - int ret = 0; - - if (!(*std_id & VPIF_V4L2_STD)) - return -EINVAL; - - if (common->started) { - vpif_err("streaming in progress\n"); - return -EBUSY; - } - - /* Call encoder subdevice function to set the standard */ - ch->video.stdid = *std_id; - ch->video.dv_preset = V4L2_DV_INVALID; - memset(&ch->video.bt_timings, 0, sizeof(ch->video.bt_timings)); - - /* Get the information about the standard */ - if (vpif_update_resolution(ch)) - return -EINVAL; - - if ((ch->vpifparams.std_info.width * - ch->vpifparams.std_info.height * 2) > - config_params.channel_bufsize[ch->channel_id]) { - vpif_err("invalid std for this size\n"); - return -EINVAL; - } - - common->fmt.fmt.pix.bytesperline = common->fmt.fmt.pix.width; - /* Configure the default format information */ - vpif_config_format(ch); - - ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video, - s_std_output, *std_id); - if (ret < 0) { - vpif_err("Failed to set output standard\n"); - return ret; - } - - ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, core, - s_std, *std_id); - if (ret < 0) - vpif_err("Failed to set standard for sub devices\n"); - return ret; -} - -static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std) -{ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - - *std = ch->video.stdid; - return 0; -} - -static int vpif_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) -{ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - - return vb2_dqbuf(&common->buffer_queue, p, - (file->f_flags & O_NONBLOCK)); -} - -static int vpif_streamon(struct file *file, void *priv, - enum v4l2_buf_type buftype) -{ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - struct channel_obj *oth_ch = vpif_obj.dev[!ch->channel_id]; - int ret = 0; - - if (buftype != V4L2_BUF_TYPE_VIDEO_OUTPUT) { - vpif_err("buffer type not supported\n"); - return -EINVAL; - } - - if (!fh->io_allowed[VPIF_VIDEO_INDEX]) { - vpif_err("fh->io_allowed\n"); - return -EACCES; - } - - /* If Streaming is already started, return error */ - if (common->started) { - vpif_err("channel->started\n"); - return -EBUSY; - } - - if ((ch->channel_id == VPIF_CHANNEL2_VIDEO - && oth_ch->common[VPIF_VIDEO_INDEX].started && - ch->vpifparams.std_info.ycmux_mode == 0) - || ((ch->channel_id == VPIF_CHANNEL3_VIDEO) - && (2 == oth_ch->common[VPIF_VIDEO_INDEX].started))) { - vpif_err("other channel is using\n"); - return -EBUSY; - } - - ret = vpif_check_format(ch, &common->fmt.fmt.pix); - if (ret < 0) - return ret; - - /* Call vb2_streamon to start streaming in videobuf2 */ - ret = vb2_streamon(&common->buffer_queue, buftype); - if (ret < 0) { - vpif_err("vb2_streamon\n"); - return ret; - } - - return ret; -} - -static int vpif_streamoff(struct file *file, void *priv, - enum v4l2_buf_type buftype) -{ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - struct vpif_display_config *vpif_config_data = - vpif_dev->platform_data; - - if (buftype != V4L2_BUF_TYPE_VIDEO_OUTPUT) { - vpif_err("buffer type not supported\n"); - return -EINVAL; - } - - if (!fh->io_allowed[VPIF_VIDEO_INDEX]) { - vpif_err("fh->io_allowed\n"); - return -EACCES; - } - - if (!common->started) { - vpif_err("channel->started\n"); - return -EINVAL; - } - - if (buftype == V4L2_BUF_TYPE_VIDEO_OUTPUT) { - /* disable channel */ - if (VPIF_CHANNEL2_VIDEO == ch->channel_id) { - if (vpif_config_data->ch2_clip_en) - channel2_clipping_enable(0); - enable_channel2(0); - channel2_intr_enable(0); - } - if ((VPIF_CHANNEL3_VIDEO == ch->channel_id) || - (2 == common->started)) { - if (vpif_config_data->ch3_clip_en) - channel3_clipping_enable(0); - enable_channel3(0); - channel3_intr_enable(0); - } - } - - common->started = 0; - return vb2_streamoff(&common->buffer_queue, buftype); -} - -static int vpif_cropcap(struct file *file, void *priv, - struct v4l2_cropcap *crop) -{ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - if (V4L2_BUF_TYPE_VIDEO_OUTPUT != crop->type) - return -EINVAL; - - crop->bounds.left = crop->bounds.top = 0; - crop->defrect.left = crop->defrect.top = 0; - crop->defrect.height = crop->bounds.height = common->height; - crop->defrect.width = crop->bounds.width = common->width; - - return 0; -} - -static int vpif_enum_output(struct file *file, void *fh, - struct v4l2_output *output) -{ - - struct vpif_display_config *config = vpif_dev->platform_data; - - if (output->index >= config->output_count) { - vpif_dbg(1, debug, "Invalid output index\n"); - return -EINVAL; - } - - strcpy(output->name, config->output[output->index]); - output->type = V4L2_OUTPUT_TYPE_ANALOG; - output->std = VPIF_V4L2_STD; - - return 0; -} - -static int vpif_s_output(struct file *file, void *priv, unsigned int i) -{ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - struct video_obj *vid_ch = &ch->video; - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - int ret = 0; - - if (common->started) { - vpif_err("Streaming in progress\n"); - return -EBUSY; - } - - ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video, - s_routing, 0, i, 0); - - if (ret < 0) - vpif_err("Failed to set output standard\n"); - - vid_ch->output_id = i; - return ret; -} - -static int vpif_g_output(struct file *file, void *priv, unsigned int *i) -{ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - struct video_obj *vid_ch = &ch->video; - - *i = vid_ch->output_id; - - return 0; -} - -static int vpif_g_priority(struct file *file, void *priv, enum v4l2_priority *p) -{ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - - *p = v4l2_prio_max(&ch->prio); - - return 0; -} - -static int vpif_s_priority(struct file *file, void *priv, enum v4l2_priority p) -{ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - - return v4l2_prio_change(&ch->prio, &fh->prio, p); -} - -/** - * vpif_enum_dv_presets() - ENUM_DV_PRESETS handler - * @file: file ptr - * @priv: file handle - * @preset: input preset - */ -static int vpif_enum_dv_presets(struct file *file, void *priv, - struct v4l2_dv_enum_preset *preset) -{ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - struct video_obj *vid_ch = &ch->video; - - return v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id], - video, enum_dv_presets, preset); -} - -/** - * vpif_s_dv_presets() - S_DV_PRESETS handler - * @file: file ptr - * @priv: file handle - * @preset: input preset - */ -static int vpif_s_dv_preset(struct file *file, void *priv, - struct v4l2_dv_preset *preset) -{ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - struct video_obj *vid_ch = &ch->video; - int ret = 0; - - if (common->started) { - vpif_dbg(1, debug, "streaming in progress\n"); - return -EBUSY; - } - - ret = v4l2_prio_check(&ch->prio, fh->prio); - if (ret != 0) - return ret; - - fh->initialized = 1; - - /* Call encoder subdevice function to set the standard */ - if (mutex_lock_interruptible(&common->lock)) - return -ERESTARTSYS; - - ch->video.dv_preset = preset->preset; - ch->video.stdid = V4L2_STD_UNKNOWN; - memset(&ch->video.bt_timings, 0, sizeof(ch->video.bt_timings)); - - /* Get the information about the standard */ - if (vpif_update_resolution(ch)) { - ret = -EINVAL; - } else { - /* Configure the default format information */ - vpif_config_format(ch); - - ret = v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id], - video, s_dv_preset, preset); - } - - mutex_unlock(&common->lock); - - return ret; -} -/** - * vpif_g_dv_presets() - G_DV_PRESETS handler - * @file: file ptr - * @priv: file handle - * @preset: input preset - */ -static int vpif_g_dv_preset(struct file *file, void *priv, - struct v4l2_dv_preset *preset) -{ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - - preset->preset = ch->video.dv_preset; - - return 0; -} -/** - * vpif_s_dv_timings() - S_DV_TIMINGS handler - * @file: file ptr - * @priv: file handle - * @timings: digital video timings - */ -static int vpif_s_dv_timings(struct file *file, void *priv, - struct v4l2_dv_timings *timings) -{ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - struct vpif_params *vpifparams = &ch->vpifparams; - struct vpif_channel_config_params *std_info = &vpifparams->std_info; - struct video_obj *vid_ch = &ch->video; - struct v4l2_bt_timings *bt = &vid_ch->bt_timings; - int ret; - - if (timings->type != V4L2_DV_BT_656_1120) { - vpif_dbg(2, debug, "Timing type not defined\n"); - return -EINVAL; - } - - /* Configure subdevice timings, if any */ - ret = v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id], - video, s_dv_timings, timings); - if (ret == -ENOIOCTLCMD) { - vpif_dbg(2, debug, "Custom DV timings not supported by " - "subdevice\n"); - return -EINVAL; - } - if (ret < 0) { - vpif_dbg(2, debug, "Error setting custom DV timings\n"); - return ret; - } - - if (!(timings->bt.width && timings->bt.height && - (timings->bt.hbackporch || - timings->bt.hfrontporch || - timings->bt.hsync) && - timings->bt.vfrontporch && - (timings->bt.vbackporch || - timings->bt.vsync))) { - vpif_dbg(2, debug, "Timings for width, height, " - "horizontal back porch, horizontal sync, " - "horizontal front porch, vertical back porch, " - "vertical sync and vertical back porch " - "must be defined\n"); - return -EINVAL; - } - - *bt = timings->bt; - - /* Configure video port timings */ - - std_info->eav2sav = bt->hbackporch + bt->hfrontporch + - bt->hsync - 8; - std_info->sav2eav = bt->width; - - std_info->l1 = 1; - std_info->l3 = bt->vsync + bt->vbackporch + 1; - - if (bt->interlaced) { - if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) { - std_info->vsize = bt->height * 2 + - bt->vfrontporch + bt->vsync + bt->vbackporch + - bt->il_vfrontporch + bt->il_vsync + - bt->il_vbackporch; - std_info->l5 = std_info->vsize/2 - - (bt->vfrontporch - 1); - std_info->l7 = std_info->vsize/2 + 1; - std_info->l9 = std_info->l7 + bt->il_vsync + - bt->il_vbackporch + 1; - std_info->l11 = std_info->vsize - - (bt->il_vfrontporch - 1); - } else { - vpif_dbg(2, debug, "Required timing values for " - "interlaced BT format missing\n"); - return -EINVAL; - } - } else { - std_info->vsize = bt->height + bt->vfrontporch + - bt->vsync + bt->vbackporch; - std_info->l5 = std_info->vsize - (bt->vfrontporch - 1); - } - strncpy(std_info->name, "Custom timings BT656/1120", - VPIF_MAX_NAME); - std_info->width = bt->width; - std_info->height = bt->height; - std_info->frm_fmt = bt->interlaced ? 0 : 1; - std_info->ycmux_mode = 0; - std_info->capture_format = 0; - std_info->vbi_supported = 0; - std_info->hd_sd = 1; - std_info->stdid = 0; - std_info->dv_preset = V4L2_DV_INVALID; - - vid_ch->stdid = 0; - vid_ch->dv_preset = V4L2_DV_INVALID; - - return 0; -} - -/** - * vpif_g_dv_timings() - G_DV_TIMINGS handler - * @file: file ptr - * @priv: file handle - * @timings: digital video timings - */ -static int vpif_g_dv_timings(struct file *file, void *priv, - struct v4l2_dv_timings *timings) -{ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - struct video_obj *vid_ch = &ch->video; - struct v4l2_bt_timings *bt = &vid_ch->bt_timings; - - timings->bt = *bt; - - return 0; -} - -/* - * vpif_g_chip_ident() - Identify the chip - * @file: file ptr - * @priv: file handle - * @chip: chip identity - * - * Returns zero or -EINVAL if read operations fails. - */ -static int vpif_g_chip_ident(struct file *file, void *priv, - struct v4l2_dbg_chip_ident *chip) -{ - chip->ident = V4L2_IDENT_NONE; - chip->revision = 0; - if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER && - chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR) { - vpif_dbg(2, debug, "match_type is invalid.\n"); - return -EINVAL; - } - - return v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 0, core, - g_chip_ident, chip); -} - -#ifdef CONFIG_VIDEO_ADV_DEBUG -/* - * vpif_dbg_g_register() - Read register - * @file: file ptr - * @priv: file handle - * @reg: register to be read - * - * Debugging only - * Returns zero or -EINVAL if read operations fails. - */ -static int vpif_dbg_g_register(struct file *file, void *priv, - struct v4l2_dbg_register *reg){ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - struct video_obj *vid_ch = &ch->video; - - return v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id], core, - g_register, reg); -} - -/* - * vpif_dbg_s_register() - Write to register - * @file: file ptr - * @priv: file handle - * @reg: register to be modified - * - * Debugging only - * Returns zero or -EINVAL if write operations fails. - */ -static int vpif_dbg_s_register(struct file *file, void *priv, - struct v4l2_dbg_register *reg){ - struct vpif_fh *fh = priv; - struct channel_obj *ch = fh->channel; - struct video_obj *vid_ch = &ch->video; - - return v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id], core, - s_register, reg); -} -#endif - -/* - * vpif_log_status() - Status information - * @file: file ptr - * @priv: file handle - * - * Returns zero. - */ -static int vpif_log_status(struct file *filep, void *priv) -{ - /* status for sub devices */ - v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status); - - return 0; -} - -/* vpif display ioctl operations */ -static const struct v4l2_ioctl_ops vpif_ioctl_ops = { - .vidioc_querycap = vpif_querycap, - .vidioc_g_priority = vpif_g_priority, - .vidioc_s_priority = vpif_s_priority, - .vidioc_enum_fmt_vid_out = vpif_enum_fmt_vid_out, - .vidioc_g_fmt_vid_out = vpif_g_fmt_vid_out, - .vidioc_s_fmt_vid_out = vpif_s_fmt_vid_out, - .vidioc_try_fmt_vid_out = vpif_try_fmt_vid_out, - .vidioc_reqbufs = vpif_reqbufs, - .vidioc_querybuf = vpif_querybuf, - .vidioc_qbuf = vpif_qbuf, - .vidioc_dqbuf = vpif_dqbuf, - .vidioc_streamon = vpif_streamon, - .vidioc_streamoff = vpif_streamoff, - .vidioc_s_std = vpif_s_std, - .vidioc_g_std = vpif_g_std, - .vidioc_enum_output = vpif_enum_output, - .vidioc_s_output = vpif_s_output, - .vidioc_g_output = vpif_g_output, - .vidioc_cropcap = vpif_cropcap, - .vidioc_enum_dv_presets = vpif_enum_dv_presets, - .vidioc_s_dv_preset = vpif_s_dv_preset, - .vidioc_g_dv_preset = vpif_g_dv_preset, - .vidioc_s_dv_timings = vpif_s_dv_timings, - .vidioc_g_dv_timings = vpif_g_dv_timings, - .vidioc_g_chip_ident = vpif_g_chip_ident, -#ifdef CONFIG_VIDEO_ADV_DEBUG - .vidioc_g_register = vpif_dbg_g_register, - .vidioc_s_register = vpif_dbg_s_register, -#endif - .vidioc_log_status = vpif_log_status, -}; - -static const struct v4l2_file_operations vpif_fops = { - .owner = THIS_MODULE, - .open = vpif_open, - .release = vpif_release, - .unlocked_ioctl = video_ioctl2, - .mmap = vpif_mmap, - .poll = vpif_poll -}; - -static struct video_device vpif_video_template = { - .name = "vpif", - .fops = &vpif_fops, - .ioctl_ops = &vpif_ioctl_ops, - .tvnorms = VPIF_V4L2_STD, - .current_norm = V4L2_STD_625_50, - -}; - -/*Configure the channels, buffer sizei, request irq */ -static int initialize_vpif(void) -{ - int free_channel_objects_index; - int free_buffer_channel_index; - int free_buffer_index; - int err = 0, i, j; - - /* Default number of buffers should be 3 */ - if ((ch2_numbuffers > 0) && - (ch2_numbuffers < config_params.min_numbuffers)) - ch2_numbuffers = config_params.min_numbuffers; - if ((ch3_numbuffers > 0) && - (ch3_numbuffers < config_params.min_numbuffers)) - ch3_numbuffers = config_params.min_numbuffers; - - /* Set buffer size to min buffers size if invalid buffer size is - * given */ - if (ch2_bufsize < config_params.min_bufsize[VPIF_CHANNEL2_VIDEO]) - ch2_bufsize = - config_params.min_bufsize[VPIF_CHANNEL2_VIDEO]; - if (ch3_bufsize < config_params.min_bufsize[VPIF_CHANNEL3_VIDEO]) - ch3_bufsize = - config_params.min_bufsize[VPIF_CHANNEL3_VIDEO]; - - config_params.numbuffers[VPIF_CHANNEL2_VIDEO] = ch2_numbuffers; - - if (ch2_numbuffers) { - config_params.channel_bufsize[VPIF_CHANNEL2_VIDEO] = - ch2_bufsize; - } - config_params.numbuffers[VPIF_CHANNEL3_VIDEO] = ch3_numbuffers; - - if (ch3_numbuffers) { - config_params.channel_bufsize[VPIF_CHANNEL3_VIDEO] = - ch3_bufsize; - } - - /* Allocate memory for six channel objects */ - for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) { - vpif_obj.dev[i] = - kzalloc(sizeof(struct channel_obj), GFP_KERNEL); - /* If memory allocation fails, return error */ - if (!vpif_obj.dev[i]) { - free_channel_objects_index = i; - err = -ENOMEM; - goto vpif_init_free_channel_objects; - } - } - - free_channel_objects_index = VPIF_DISPLAY_MAX_DEVICES; - free_buffer_channel_index = VPIF_DISPLAY_NUM_CHANNELS; - free_buffer_index = config_params.numbuffers[i - 1]; - - return 0; - -vpif_init_free_channel_objects: - for (j = 0; j < free_channel_objects_index; j++) - kfree(vpif_obj.dev[j]); - return err; -} - -/* - * vpif_probe: This function creates device entries by register itself to the - * V4L2 driver and initializes fields of each channel objects - */ -static __init int vpif_probe(struct platform_device *pdev) -{ - struct vpif_subdev_info *subdevdata; - struct vpif_display_config *config; - int i, j = 0, k, q, m, err = 0; - struct i2c_adapter *i2c_adap; - struct common_obj *common; - struct channel_obj *ch; - struct video_device *vfd; - struct resource *res; - int subdev_count; - size_t size; - - vpif_dev = &pdev->dev; - err = initialize_vpif(); - - if (err) { - v4l2_err(vpif_dev->driver, "Error initializing vpif\n"); - return err; - } - - err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev); - if (err) { - v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n"); - return err; - } - - k = 0; - while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, k))) { - for (i = res->start; i <= res->end; i++) { - if (request_irq(i, vpif_channel_isr, IRQF_SHARED, - "VPIF_Display", - (void *)(&vpif_obj.dev[k]->channel_id))) { - err = -EBUSY; - goto vpif_int_err; - } - } - k++; - } - - for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) { - - /* Get the pointer to the channel object */ - ch = vpif_obj.dev[i]; - - /* Allocate memory for video device */ - vfd = video_device_alloc(); - if (vfd == NULL) { - for (j = 0; j < i; j++) { - ch = vpif_obj.dev[j]; - video_device_release(ch->video_dev); - } - err = -ENOMEM; - goto vpif_int_err; - } - - /* Initialize field of video device */ - *vfd = vpif_video_template; - vfd->v4l2_dev = &vpif_obj.v4l2_dev; - vfd->release = video_device_release; - snprintf(vfd->name, sizeof(vfd->name), - "VPIF_Display_DRIVER_V%s", - VPIF_DISPLAY_VERSION); - - /* Set video_dev to the video device */ - ch->video_dev = vfd; - } - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (res) { - size = resource_size(res); - /* The resources are divided into two equal memory and when - * we have HD output we can add them together - */ - for (j = 0; j < VPIF_DISPLAY_MAX_DEVICES; j++) { - ch = vpif_obj.dev[j]; - ch->channel_id = j; - - /* only enabled if second resource exists */ - config_params.video_limit[ch->channel_id] = 0; - if (size) - config_params.video_limit[ch->channel_id] = - size/2; - } - } - - for (j = 0; j < VPIF_DISPLAY_MAX_DEVICES; j++) { - ch = vpif_obj.dev[j]; - /* Initialize field of the channel objects */ - atomic_set(&ch->usrs, 0); - for (k = 0; k < VPIF_NUMOBJECTS; k++) { - ch->common[k].numbuffers = 0; - common = &ch->common[k]; - common->io_usrs = 0; - common->started = 0; - spin_lock_init(&common->irqlock); - mutex_init(&common->lock); - common->numbuffers = 0; - common->set_addr = NULL; - common->ytop_off = common->ybtm_off = 0; - common->ctop_off = common->cbtm_off = 0; - common->cur_frm = common->next_frm = NULL; - memset(&common->fmt, 0, sizeof(common->fmt)); - common->numbuffers = config_params.numbuffers[k]; - - } - ch->initialized = 0; - ch->channel_id = j; - if (j < 2) - ch->common[VPIF_VIDEO_INDEX].numbuffers = - config_params.numbuffers[ch->channel_id]; - else - ch->common[VPIF_VIDEO_INDEX].numbuffers = 0; - - memset(&ch->vpifparams, 0, sizeof(ch->vpifparams)); - - /* Initialize prio member of channel object */ - v4l2_prio_init(&ch->prio); - ch->common[VPIF_VIDEO_INDEX].fmt.type = - V4L2_BUF_TYPE_VIDEO_OUTPUT; - /* Locking in file operations other than ioctl should be done - by the driver, not the V4L2 core. - This driver needs auditing so that this flag can be removed. */ - set_bit(V4L2_FL_LOCK_ALL_FOPS, &ch->video_dev->flags); - ch->video_dev->lock = &common->lock; - - /* register video device */ - vpif_dbg(1, debug, "channel=%x,channel->video_dev=%x\n", - (int)ch, (int)&ch->video_dev); - - err = video_register_device(ch->video_dev, - VFL_TYPE_GRABBER, (j ? 3 : 2)); - if (err < 0) - goto probe_out; - - video_set_drvdata(ch->video_dev, ch); - } - - i2c_adap = i2c_get_adapter(1); - config = pdev->dev.platform_data; - subdev_count = config->subdev_count; - subdevdata = config->subdevinfo; - vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count, - GFP_KERNEL); - if (vpif_obj.sd == NULL) { - vpif_err("unable to allocate memory for subdevice pointers\n"); - err = -ENOMEM; - goto probe_out; - } - - for (i = 0; i < subdev_count; i++) { - vpif_obj.sd[i] = v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev, - i2c_adap, - &subdevdata[i].board_info, - NULL); - if (!vpif_obj.sd[i]) { - vpif_err("Error registering v4l2 subdevice\n"); - goto probe_subdev_out; - } - - if (vpif_obj.sd[i]) - vpif_obj.sd[i]->grp_id = 1 << i; - } - - v4l2_info(&vpif_obj.v4l2_dev, - " VPIF display driver initialized\n"); - return 0; - -probe_subdev_out: - kfree(vpif_obj.sd); -probe_out: - for (k = 0; k < j; k++) { - ch = vpif_obj.dev[k]; - video_unregister_device(ch->video_dev); - video_device_release(ch->video_dev); - ch->video_dev = NULL; - } -vpif_int_err: - v4l2_device_unregister(&vpif_obj.v4l2_dev); - vpif_err("VPIF IRQ request failed\n"); - for (q = k; k >= 0; k--) { - for (m = i; m >= res->start; m--) - free_irq(m, (void *)(&vpif_obj.dev[k]->channel_id)); - res = platform_get_resource(pdev, IORESOURCE_IRQ, k-1); - m = res->end; - } - - return err; -} - -/* - * vpif_remove: It un-register channels from V4L2 driver - */ -static int vpif_remove(struct platform_device *device) -{ - struct channel_obj *ch; - int i; - - v4l2_device_unregister(&vpif_obj.v4l2_dev); - - /* un-register device */ - for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) { - /* Get the pointer to the channel object */ - ch = vpif_obj.dev[i]; - /* Unregister video device */ - video_unregister_device(ch->video_dev); - - ch->video_dev = NULL; - } - - return 0; -} - -#ifdef CONFIG_PM -static int vpif_suspend(struct device *dev) -{ - struct common_obj *common; - struct channel_obj *ch; - int i; - - for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) { - /* Get the pointer to the channel object */ - ch = vpif_obj.dev[i]; - common = &ch->common[VPIF_VIDEO_INDEX]; - mutex_lock(&common->lock); - if (atomic_read(&ch->usrs) && common->io_usrs) { - /* Disable channel */ - if (ch->channel_id == VPIF_CHANNEL2_VIDEO) { - enable_channel2(0); - channel2_intr_enable(0); - } - if (ch->channel_id == VPIF_CHANNEL3_VIDEO || - common->started == 2) { - enable_channel3(0); - channel3_intr_enable(0); - } - } - mutex_unlock(&common->lock); - } - - return 0; -} - -static int vpif_resume(struct device *dev) -{ - - struct common_obj *common; - struct channel_obj *ch; - int i; - - for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) { - /* Get the pointer to the channel object */ - ch = vpif_obj.dev[i]; - common = &ch->common[VPIF_VIDEO_INDEX]; - mutex_lock(&common->lock); - if (atomic_read(&ch->usrs) && common->io_usrs) { - /* Enable channel */ - if (ch->channel_id == VPIF_CHANNEL2_VIDEO) { - enable_channel2(1); - channel2_intr_enable(1); - } - if (ch->channel_id == VPIF_CHANNEL3_VIDEO || - common->started == 2) { - enable_channel3(1); - channel3_intr_enable(1); - } - } - mutex_unlock(&common->lock); - } - - return 0; -} - -static const struct dev_pm_ops vpif_pm = { - .suspend = vpif_suspend, - .resume = vpif_resume, -}; - -#define vpif_pm_ops (&vpif_pm) -#else -#define vpif_pm_ops NULL -#endif - -static __refdata struct platform_driver vpif_driver = { - .driver = { - .name = "vpif_display", - .owner = THIS_MODULE, - .pm = vpif_pm_ops, - }, - .probe = vpif_probe, - .remove = vpif_remove, -}; - -static __init int vpif_init(void) -{ - return platform_driver_register(&vpif_driver); -} - -/* - * vpif_cleanup: This function un-registers device and driver to the kernel, - * frees requested irq handler and de-allocates memory allocated for channel - * objects. - */ -static void vpif_cleanup(void) -{ - struct platform_device *pdev; - struct resource *res; - int irq_num; - int i = 0; - - pdev = container_of(vpif_dev, struct platform_device, dev); - - while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, i))) { - for (irq_num = res->start; irq_num <= res->end; irq_num++) - free_irq(irq_num, - (void *)(&vpif_obj.dev[i]->channel_id)); - i++; - } - - platform_driver_unregister(&vpif_driver); - kfree(vpif_obj.sd); - for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) - kfree(vpif_obj.dev[i]); -} - -module_init(vpif_init); -module_exit(vpif_cleanup); |
