From: Chaithrika U S <chaithrika@xxxxxx> Display driver for TI DM646x EVM Adds the DM646x display driver and the associated header file Signed-off-by: Chaithrika U S <chaithrika@xxxxxx> --- Applies to v4l-dvb repository located at http://linuxtv.org/hg/v4l-dvb/rev/1fd54a62abde drivers/media/video/davinci/dm646x_display.c | 1867 ++++++++++++++++++++++++++ include/media/davinci/dm646x_display.h | 210 +++ 2 files changed, 2077 insertions(+), 0 deletions(-) create mode 100644 drivers/media/video/davinci/dm646x_display.c create mode 100644 include/media/davinci/dm646x_display.h diff --git a/drivers/media/video/davinci/dm646x_display.c b/drivers/media/video/davinci/dm646x_display.c new file mode 100644 index 0000000..a6dfbea --- /dev/null +++ b/drivers/media/video/davinci/dm646x_display.c @@ -0,0 +1,1867 @@ +/* + * vpif-display - DM646x EVM display driver + * + * 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/version.h> + +#include <asm/irq.h> +#include <asm/page.h> + +#include <media/adv7343.h> +#include <media/ths7303.h> +#include <media/davinci/dm646x_display.h> +#include <media/davinci/vpif.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> + +#include <mach/dm646x.h> + +#define DM646X_V4L2_STD (V4L2_STD_720P_60 |\ + V4L2_STD_1080I_30 | V4L2_STD_1080I_25 |\ + V4L2_STD_480P_60 | V4L2_STD_576P_50 |\ + V4L2_STD_720P_25 | V4L2_STD_720P_30 |\ + V4L2_STD_720P_50 | V4L2_STD_1080P_25 |\ + V4L2_STD_1080P_30 | V4L2_STD_1080P_24 |\ + V4L2_STD_ALL) + +static int debug = 2; +static u32 channel2_numbuffers = 3; +static u32 channel3_numbuffers = 3; +static u32 channel2_bufsize = 1920 * 1080 * 2; +static u32 channel3_bufsize = 720 * 576 * 2; + +module_param(channel2_numbuffers, uint, S_IRUGO); +module_param(channel3_numbuffers, uint, S_IRUGO); +module_param(channel2_bufsize, uint, S_IRUGO); +module_param(channel3_bufsize, uint, S_IRUGO); + +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 int vpif_nr[] = {2, 3,}; +static struct vpif_device vpif_obj = { {NULL} }; +static struct device *vpif_dev; + +static const char *subdev_name[] = { + ADV7343_NAME, + THS7303_NAME, +}; + +static const char *output_name[] = { + "COMPOSITE", + "COMPONENT", + "SVIDEO", +}; +static struct v4l2_capability vpif_videocap = { + .driver = "vpif display", + .card = "DM646x EVM", + .bus_info = "Platform", + .version = VPIF_DISPLAY_VERSION_CODE, + .capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING, +}; + +/* + * vpif_uservirt_to_phys: This inline function is used to convert user + * space virtual address to physical address. + */ +static inline u32 vpif_uservirt_to_phys(u32 virtp) +{ + unsigned long physp = 0; + struct mm_struct *mm = current->mm; + struct vm_area_struct *vma; + + vma = find_vma(mm, virtp); + /* For kernel direct-mapped memory, take the easy way */ + if (virtp >= PAGE_OFFSET) { + physp = virt_to_phys((void *)virtp); + } else if (vma && (vma->vm_flags & VM_IO) && (vma->vm_pgoff)) { + /* this will catch, kernel-allocated, mmaped-to-usermode addr */ + physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start); + } else { + /* otherwise, use get_user_pages() for general userland pages */ + int res, nr_pages = 1; + struct page *pages; + down_read(¤t->mm->mmap_sem); + + res = get_user_pages(current, current->mm, + virtp, nr_pages, 1, 0, &pages, NULL); + up_read(¤t->mm->mmap_sem); + + if (res == nr_pages) { + physp = __pa(page_address(&pages[0]) + + (virtp & ~PAGE_MASK)); + } else { + v4l2_err(vpif_dev->driver, "get_user_pages failed\n"); + return 0; + } + } + + return physp; +} + +/* + * buffer_prepare: This is the callback function called from videobuf_qbuf() + * function the buffer is prepared and user space virtual address is converted + * into physical address + */ +static int vpif_buffer_prepare(struct videobuf_queue *q, + struct videobuf_buffer *vb, + enum v4l2_field field) +{ + struct vpif_fh *fh = q->priv_data; + struct channel_obj *channel = fh->channel; + unsigned long addr; + struct common_obj *common = NULL; + + common = &(channel->common[VPIF_VIDEO_INDEX]); + v4l2_dbg(1, debug, vpif_dev->driver, "<vpif_buffer_prepare>\n"); + + if (VIDEOBUF_NEEDS_INIT == vb->state) { + vb->width = common->width; + vb->height = common->height; + vb->size = vb->width * vb->height; + vb->field = field; + } + vb->state = VIDEOBUF_PREPARED; + + /* if user pointer memory mechanism is used, get the physical + * address of the buffer */ + if (V4L2_MEMORY_USERPTR == common->memory) { + if (!vb->baddr) { + v4l2_err(vpif_dev->driver, "buffer_address is 0\n"); + return -EINVAL; + } + + vb->boff = vpif_uservirt_to_phys(vb->baddr); + if (!ISALIGNED(vb->boff)) { + v4l2_err(vpif_dev->driver, "buffer_prepare:offset is \ + not aligned to 8 bytes\n"); + return -EINVAL; + } + } + + addr = vb->boff; + 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))) { + v4l2_err(vpif_dev->driver, "buffer_prepare:offset is \ + not aligned to 8 bytes\n"); + return -EINVAL; + } + } + v4l2_dbg(1, debug, vpif_dev->driver, "</vpif_buffer_prepare>\n"); + + return 0; +} + +/* + * vpif_buffer_setup: This function allocates memory for the buffers + */ +static int vpif_buffer_setup(struct videobuf_queue *q, unsigned int *count, + unsigned int *size) +{ + struct vpif_fh *fh = q->priv_data; + struct channel_obj *channel = fh->channel; + struct common_obj *common = NULL; + v4l2_dbg(1, debug, vpif_dev->driver, "<vpif_buffer_setup>\n"); + + common = &(channel->common[VPIF_VIDEO_INDEX]); + + if (V4L2_MEMORY_MMAP != common->memory) { + v4l2_dbg(1, debug, vpif_dev->driver, "End of buffer setup\n"); + return 0; + } + + *size = config_params.channel_bufsize[channel->channel_id]; + if (*count < config_params.min_numbuffers) + *count = config_params.min_numbuffers; + v4l2_dbg(1, debug, vpif_dev->driver, "</vpif_buffer_setup>\n"); + + return 0; +} + +/* + * vpif_buffer_queue: This function adds the buffer to DMA queue + */ +static void vpif_buffer_queue(struct videobuf_queue *q, + struct videobuf_buffer *vb) +{ + struct vpif_fh *fh = q->priv_data; + struct channel_obj *channel = fh->channel; + struct common_obj *common = NULL; + v4l2_dbg(1, debug, vpif_dev->driver, "<vpif_buffer_queue>\n"); + + common = &(channel->common[VPIF_VIDEO_INDEX]); + + /* add the buffer to the DMA queue */ + list_add_tail(&vb->queue, &common->dma_queue); + vb->state = VIDEOBUF_QUEUED; + v4l2_dbg(1, debug, vpif_dev->driver, "</vpif_buffer_queue>\n"); +} + +/* + * vpif_buffer_release: This function is called from the videobuf layer to + * free memory allocated to the buffers + */ +static void vpif_buffer_release(struct videobuf_queue *q, + struct videobuf_buffer *vb) +{ + struct vpif_fh *fh = q->priv_data; + struct channel_obj *channel = fh->channel; + struct common_obj *common = NULL; + unsigned int buf_size = 0; + v4l2_dbg(1, debug, vpif_dev->driver, "<vpif_buffer_release>\n"); + + common = &(channel->common[VPIF_VIDEO_INDEX]); + + videobuf_dma_contig_free(q, vb); + vb->state = VIDEOBUF_NEEDS_INIT; + + if (V4L2_MEMORY_MMAP != common->memory) { + v4l2_dbg(1, debug, vpif_dev->driver, "End of buffer release\n"); + return; + } + + buf_size = config_params.channel_bufsize[channel->channel_id]; + + v4l2_dbg(1, debug, vpif_dev->driver, "</vpif_buffer_release>\n"); +} + +static struct videobuf_queue_ops video_qops = { + .buf_setup = vpif_buffer_setup, + .buf_prepare = vpif_buffer_prepare, + .buf_queue = vpif_buffer_queue, + .buf_release = vpif_buffer_release, +}; +static u8 channel_first_int[VPIF_NUMOBJECTS][2] = { {1, 1} }; + +/* + * 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 timeval timevalue; + int fid = -1, i; + struct vpif_device *dev = &vpif_obj; + int channel_id = 0; + unsigned long addr = 0; + struct channel_obj *channel = NULL; + struct common_obj *common = NULL; + struct video_obj *vid_ch = NULL; + enum v4l2_field field; + v4l2_dbg(1, debug, vpif_dev->driver, "<vpif_channel_isr>\n"); + + channel_id = *(int *)(dev_id); + channel = dev->dev[channel_id]; + vid_ch = &(channel->video); + + do_gettimeofday(&timevalue); + field = channel->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field; + for (i = 0; i < VPIF_NUMOBJECTS; i++) { + common = &(channel->common[i]); + /* If streaming is started in this channel */ + if (0 == common->started) + continue; + if (1 == vid_ch->std_info.frame_format) { + if (list_empty(&common->dma_queue)) + continue; + + /* Progressive mode */ + if (!channel_first_int[i][channel_id]) { + /* Mark status of the curFrm to + * done and unlock semaphore on it */ + common->curFrm->ts = timevalue; + common->curFrm->state = VIDEOBUF_DONE; + wake_up_interruptible(&common->curFrm->done); + /* Make curFrm pointing to nextFrm */ + common->curFrm = common->nextFrm; + + } + channel_first_int[i][channel_id] = 0; + + /* Get the next buffer from buffer queue */ + common->nextFrm = list_entry(common->dma_queue.next, + struct videobuf_buffer, queue); + /* Remove that buffer from the buffer queue */ + list_del(&common->nextFrm->queue); + /* Mark status of the buffer as active */ + common->nextFrm->state = VIDEOBUF_ACTIVE; + /* Set top and bottom field addrs in VPIF registers */ + + addr = videobuf_to_dma_contig(common->nextFrm); + common->set_addr(addr + common->ytop_off, + addr + common->ybtm_off, + addr + common->ctop_off, + addr + common->cbtm_off); + } 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) { + channel->field_id ^= 1; + /* Get field id from VPIF registers */ + fid = vpif_channel_getfid(channel-> + channel_id + 2); + /* If fid does not match with stored field id */ + if (fid != channel->field_id) { + /* Make them in sync */ + if (0 == fid) + channel->field_id = fid; + + return IRQ_HANDLED; + } + } + /* device field id and local field id are in sync */ + /* If this is even field */ + if (0 == fid) { + if (common->curFrm == common->nextFrm) + continue; + + /* one frame is displayed If next frame is + * available, release curFrm and move on */ + + /* Copy frame display time */ + common->curFrm->ts = timevalue; + /* Change status of the curFrm */ + common->curFrm->state = VIDEOBUF_DONE; + /* unlock semaphore on curFrm */ + wake_up_interruptible(&common->curFrm->done); + /* Make curFrm pointing to nextFrm */ + common->curFrm = common->nextFrm; + + } else if (1 == fid) { /* odd field */ + if (list_empty(&common->dma_queue) + || (common->curFrm != common->nextFrm)) { + continue; + } + + /* one field is displayed configure the next + frame if it is available else hold on current + frame */ + /* Get next from the buffer queue */ + common->nextFrm = list_entry(common->dma_queue. + next, + struct videobuf_buffer, + queue); + + /* Remove that from the buffer queue */ + list_del(&common->nextFrm->queue); + + /* Mark state of the frame to active */ + common->nextFrm->state = VIDEOBUF_ACTIVE; + addr = videobuf_to_dma_contig(common->nextFrm); + common->set_addr(addr + common->ytop_off, + addr + common->ybtm_off, + addr + common->ctop_off, + addr + common->cbtm_off); + + } + } + } + v4l2_dbg(1, debug, vpif_dev->driver, "</vpif_channel_isr>\n"); + + return IRQ_HANDLED; +} + +static void vpif_get_std_info(struct channel_obj *ch) +{ + struct video_obj *vid_ch = &(ch->video); + struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]); + int ret; + + vid_ch->std_info.channel_id = ch->channel_id + 2; + + /* Get standard name from the encoder by enumerating standards */ + vid_ch->std_info.stdid = vid_ch->stdid; + + /* Get standard information from VPIF layer */ + ret = vpif_get_mode_info(&vid_ch->std_info); + common->fmt.fmt.pix.width = vid_ch->std_info.activepixels; + common->fmt.fmt.pix.height = vid_ch->std_info.activelines; + + v4l2_dbg(1, debug, vpif_dev->driver, + "Pixel details: Width = %d,Height = %d\n", + common->fmt.fmt.pix.width, common->fmt.fmt.pix.height); + + /* Set height and width paramateres */ + ch->common[VPIF_VIDEO_INDEX].height = vid_ch->std_info.activelines; + ch->common[VPIF_VIDEO_INDEX].width = vid_ch->std_info.activepixels; +} + +/* + * 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 *channel) +{ + unsigned int hpitch, vpitch, sizeimage; + struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]); + struct video_obj *vid_ch = &(channel->video); + struct vpif_params *vpifparams = &channel->vpifparams; + enum v4l2_field field = common->fmt.fmt.pix.field; + + v4l2_dbg(1, debug, vpif_dev->driver, "<vpif_calculate_offsets>\n"); + + if (V4L2_FIELD_ANY == common->fmt.fmt.pix.field) { + if (vid_ch->std_info.frame_format) + 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; + } + + if (V4L2_MEMORY_USERPTR == common->memory) + sizeimage = common->fmt.fmt.pix.sizeimage; + else + sizeimage = config_params.channel_bufsize[channel->channel_id]; + 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 (vid_ch->std_info.frame_format == 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; + } + + channel->vpifparams.video_params.stdid = vid_ch->std_info.stdid; + v4l2_dbg(1, debug, vpif_dev->driver, "</vpif_calculate_offsets>\n"); +} + + +static void vpif_config_format(struct channel_obj *channel) +{ + struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]); + + common->fmt.fmt.pix.field = V4L2_FIELD_ANY; + + if (config_params.numbuffers[channel->channel_id] == 0) + common->memory = V4L2_MEMORY_USERPTR; + else + common->memory = V4L2_MEMORY_MMAP; + + common->fmt.fmt.pix.sizeimage + = config_params.channel_bufsize[channel->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 *channel, + struct v4l2_pix_format *pixfmt) +{ + u32 sizeimage, hpitch, vpitch; + enum v4l2_field field = pixfmt->field; + struct video_obj *vid_ch = &(channel->video); + struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]); + v4l2_dbg(1, debug, vpif_dev->driver, "<vpif_check_format>\n"); + + 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; + + if (V4L2_MEMORY_USERPTR == common->memory) + sizeimage = pixfmt->sizeimage; + else + sizeimage = config_params.channel_bufsize[channel->channel_id]; + + v4l2_subdev_command(vpif_obj.sd[ADV7343_IDX], ENCODER_GET_MODE, + &channel->video.stdid); + vpif_get_std_info(channel); + + hpitch = pixfmt->bytesperline; + vpitch = sizeimage / (hpitch * 2); + + /* Check for valid value of pitch */ + if ((hpitch < vid_ch->std_info.activepixels) || + (vpitch < vid_ch->std_info.activelines)) + goto invalid_pitch_exit; + + /* Check for 8 byte alignment */ + if (!(ISALIGNED(hpitch))) { + v4l2_err(vpif_dev->driver, "invalid pitch alignment\n"); + return -EINVAL; + } + pixfmt->width = common->fmt.fmt.pix.width; + pixfmt->height = common->fmt.fmt.pix.height; + + v4l2_dbg(1, debug, vpif_dev->driver, "</vpif_check_format>\n"); + return 0; + +invalid_fmt_exit: + v4l2_err(vpif_dev->driver, "invalid field format\n"); + return -EINVAL; + +invalid_pitch_exit: + v4l2_err(vpif_dev->driver, "invalid pitch\n"); + return -EINVAL; +} + +static void vpif_config_addr(struct channel_obj *channel, int muxmode) +{ + struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]); + v4l2_dbg(1, debug, vpif_dev->driver, "<vpif_config_addr>"); + if (VPIF_CHANNEL3_VIDEO == channel->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; + } + v4l2_dbg(1, debug, vpif_dev->driver, "</vpif_config_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 *channel = fh->channel; + struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]); + int err = 0; + v4l2_dbg(1, debug, vpif_dev->driver, "<vpif_mmap>\n"); + + err = videobuf_mmap_mapper(&common->buffer_queue, vma); + + return err; +} + +/* + * vpif_poll: It is used for select/poll system call + */ +static unsigned int vpif_poll(struct file *filep, poll_table *wait) +{ + int err = 0; + struct vpif_fh *fh = filep->private_data; + struct channel_obj *channel = fh->channel; + struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]); + + v4l2_dbg(1, debug, vpif_dev->driver, "<vpif_poll>"); + + if (common->started) + err = videobuf_poll_stream(filep, &common->buffer_queue, wait); + + common = &(channel->common[VPIF_VBI_INDEX]); + if (common->started) + err |= videobuf_poll_stream(filep, &common->buffer_queue, wait); + + if (err & POLLIN) { + err &= (~POLLIN); + err |= POLLOUT; + } + if (err & POLLRDNORM) { + err &= (~POLLRDNORM); + err |= POLLWRNORM; + } + + return err; +} + +/* + * 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) +{ + int minor = video_devdata(filep)->minor; + int found = -1; + int i = 0, err = 0; + struct channel_obj *channel; + struct vpif_fh *fh = NULL; + + v4l2_dbg(1, debug, vpif_dev->driver, "<vpif open>\n"); + /* Check for valid minor number */ + for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) { + channel = vpif_obj.dev[i]; + if (minor == channel->video_dev->minor) { + found = i; + break; + } + } + + /* If not found, return error no device */ + if (0 > found) { + v4l2_err(vpif_dev->driver, "device not found\n"); + return -ENODEV; + } + /* Allocate memory for the file handle object */ + fh = kmalloc(sizeof(struct vpif_fh), GFP_KERNEL); + if (ISNULL(fh)) { + v4l2_err(vpif_dev->driver, + "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 = channel; + fh->initialized = 0; + + if (!channel->initialized) { + fh->initialized = 1; + channel->initialized = 1; + + /* Get the default standard and info about standard */ + + err = v4l2_subdev_command(vpif_obj.sd[ADV7343_IDX], + ENCODER_GET_MODE, + &channel->video.stdid); + if (err) + v4l2_err(vpif_dev->driver, + "Failed to get encoder mode\n"); + if (err < 0) + goto vpif_open_out; + + vpif_get_std_info(channel); + channel->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.bytesperline = + channel->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.width; + + /* Configure the default format information */ + vpif_config_format(channel); + memset(&(channel->vpifparams), 0, sizeof(struct vpif_params)); + } + +vpif_open_out: + if (err < 0) { + if (fh->initialized) + channel->initialized = 0; + + filep->private_data = NULL; + fh->initialized = 0; + /* Free memory allocated to file handle object */ + if (!ISNULL(fh)) + kfree(fh); + return err; + } + /* Increment channel usrs counter */ + channel->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(&channel->prio, &fh->prio); + + v4l2_dbg(1, debug, vpif_dev->driver, "</vpif_open>\n"); + + return err; +} + +/* + * 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 *channel = fh->channel; + struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]); + + v4l2_dbg(1, debug, vpif_dev->driver, "<vpif_release>\n"); + + /* If this is doing IO and other channels are not closed */ + if ((channel->usrs != 1) && fh->io_allowed[VPIF_VIDEO_INDEX]) { + v4l2_err(vpif_dev->driver, "Close other instances\n"); + return -EAGAIN; + } + + down_interruptible(&common->lock); + + /* 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/vbi as per its device type + and channel id */ + if (VPIF_CHANNEL2_VIDEO == channel->channel_id) { + enable_channel2(0); + channel2_intr_enable(0); + } + if ((VPIF_CHANNEL3_VIDEO == channel->channel_id) || + (2 == common->started)) { + enable_channel3(0); + channel3_intr_enable(0); + } + common->started = 0; + /* Free buffers allocated */ + videobuf_queue_cancel(&common->buffer_queue); + videobuf_mmap_free(&common->buffer_queue); + common->numbuffers = + config_params.numbuffers[channel->channel_id]; + + } + + up(&common->lock); + + /* Decrement channel usrs counter */ + channel->usrs--; + /* If this file handle has initialize encoder device, reset it */ + if (fh->initialized) + channel->initialized = 0; + + /* Close the priority */ + v4l2_prio_close(&channel->prio, &fh->prio); + filep->private_data = NULL; + fh->initialized = 0; + + if (!ISNULL(fh)) + kfree(fh); + + v4l2_dbg(1, debug, vpif_dev->driver, "</vpif_release>\n"); + + return 0; +} + +/* functions implementing ioctls */ + +static int vpif_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct vpif_fh *fh = priv; + struct channel_obj *channel = fh->channel; + + v4l2_dbg(1, debug, vpif_dev->driver, "VIDIOC_QUERYCAP\n"); + memset(cap, 0, sizeof(*cap)); + if ((VPIF_CHANNEL2_VIDEO == channel->channel_id) + || (VPIF_CHANNEL3_VIDEO == channel->channel_id)) { + *cap = vpif_videocap; + return 0; + } else + return -EINVAL; +} + +static int vpif_enum_fmt_vid_out(struct file *file, void *priv, + struct v4l2_fmtdesc *fmt) +{ + unsigned int index = 0; + v4l2_dbg(1, debug, vpif_dev->driver, "VIDIOC_ENUM_FMT\n"); + + if (fmt->index != 0) { + v4l2_err(vpif_dev->driver, "Invalid format index\n"); + return -EINVAL; + } + + /* Fill in the information about format */ + index = fmt->index; + memset(fmt, 0, sizeof(*fmt)); + fmt->index = index; + 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) +{ + int ret = 0; + struct vpif_fh *fh = priv; + struct channel_obj *channel = fh->channel; + struct video_obj *vid_ch = &(channel->video); + + struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]); + v4l2_dbg(1, debug, vpif_dev->driver, "VIDIOC_G_FMT\n"); + + /* Check the validity of the buffer type */ + if (common->fmt.type != fmt->type) + return -EINVAL; + + if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) { + if (vid_ch->std_info.vbi_supported == 0) + return -EINVAL; + } + /* Fill in the information about format */ + down_interruptible(&common->lock); + ret = v4l2_subdev_command(vpif_obj.sd[ADV7343_IDX], ENCODER_GET_MODE, + &channel->video.stdid); + if (ret < 0) + goto g_fmt_exit; + + vpif_get_std_info(channel); + *fmt = common->fmt; + +g_fmt_exit: + up(&(common->lock)); + return ret; +} + +static int vpif_s_fmt_vid_out(struct file *file, void *priv, + struct v4l2_format *fmt) +{ + int ret = 0; + struct vpif_fh *fh = priv; + struct channel_obj *channel = fh->channel; + struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]); + struct video_obj *vid_ch = &(channel->video); + v4l2_dbg(1, debug, vpif_dev->driver, "VIDIOC_S_FMT\n"); + + if ((VPIF_CHANNEL2_VIDEO == channel->channel_id) + || (VPIF_CHANNEL3_VIDEO == channel->channel_id)) { + if (!fh->initialized) { + v4l2_err(vpif_dev->driver, "Channel Busy\n"); + return -EBUSY; + } + + /* Check for the priority */ + ret = v4l2_prio_check(&channel->prio, &fh->prio); + if (0 != ret) + return ret; + fh->initialized = 1; + } + + if (common->started) { + v4l2_err(vpif_dev->driver, "Streaming is started\n"); + return -EBUSY; + } + + if (V4L2_BUF_TYPE_VIDEO_OUTPUT == fmt->type) { + struct v4l2_pix_format *pixfmt = &fmt->fmt.pix; + /* Check for valid field format */ + ret = vpif_check_format(channel, pixfmt); + if (ret) + return ret; + /* store the pix format in the channel object */ + common->fmt.fmt.pix = *pixfmt; + v4l2_dbg(1, debug, vpif_dev->driver, "Success.\n"); + } else if (vid_ch->std_info.vbi_supported == 0) { + v4l2_err(vpif_dev->driver, + "standard doesn't support\n"); + return -EINVAL; + } + + if (ret < 0) + return ret; + + /* store the format in the channel object */ + down_interruptible(&common->lock); + common->fmt = *fmt; + up(&common->lock); + + return 0; +} + +static int vpif_try_fmt_vid_out(struct file *file, void *priv, + struct v4l2_format *fmt) +{ + int ret = 0; + struct vpif_fh *fh = priv; + struct channel_obj *channel = fh->channel; + struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]); + v4l2_dbg(1, debug, vpif_dev->driver, "VIDIOC_TRY_FMT\n"); + + if (V4L2_BUF_TYPE_VIDEO_OUTPUT == fmt->type) { + struct v4l2_pix_format *pixfmt = &fmt->fmt.pix; + ret = vpif_check_format(channel, 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) +{ + int ret = 0; + struct vpif_fh *fh = priv; + struct channel_obj *channel = fh->channel; + enum v4l2_field field; + u8 index = 0; + struct common_obj *common = NULL; + + /* This file handle has not initialized the channel, + It is not allowed to do settings */ + if ((VPIF_CHANNEL2_VIDEO == channel->channel_id) + || (VPIF_CHANNEL3_VIDEO == channel->channel_id)) { + if (!fh->initialized) { + v4l2_err(vpif_dev->driver, "Channel Busy\n"); + return -EBUSY; + } + } + + v4l2_dbg(1, debug, vpif_dev->driver, "VIDIOC_REQBUFS\n"); + + if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != reqbuf->type)) + return -EINVAL; + + index = VPIF_VIDEO_INDEX; + + common = &(channel->common[index]); + down_interruptible(&common->lock); + + if (common->fmt.type != reqbuf->type) { + ret = -EINVAL; + goto reqbuf_exit; + } + + if (0 != common->io_usrs) { + ret = -EBUSY; + goto reqbuf_exit; + } + + 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 videobuf queue as per the buffer type */ + videobuf_queue_dma_contig_init(&common->buffer_queue, + &video_qops, NULL, + &common->irqlock, + reqbuf->type, field, + sizeof(struct videobuf_buffer), fh); + + /* 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 */ + ret = videobuf_reqbufs(&common->buffer_queue, reqbuf); + +reqbuf_exit: + up(&common->lock); + return ret; +} + +static int vpif_querybuf(struct file *file, void *priv, + struct v4l2_buffer *tbuf) +{ + u8 index = 0; + struct vpif_fh *fh = priv; + struct channel_obj *channel = fh->channel; + struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]); + v4l2_dbg(1, debug, vpif_dev->driver, "VIDIOC_QUERYBUF\n"); + + index = VPIF_VIDEO_INDEX; + + if (common->fmt.type != tbuf->type) + return -EINVAL; + + if (tbuf->memory != V4L2_MEMORY_MMAP) + return -EINVAL; + + return videobuf_querybuf(&common->buffer_queue, tbuf); +} + +static int vpif_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) +{ + u8 index = 0; + int ret = 0; + unsigned long flags; + struct videobuf_buffer *buf1; + unsigned long addr = 0; + struct vpif_fh *fh = priv; + struct channel_obj *channel = fh->channel; + struct common_obj *common = NULL; + struct v4l2_buffer tbuf = *buf; + + v4l2_dbg(1, debug, vpif_dev->driver, "VIDIOC_QBUF\n"); + + index = VPIF_VIDEO_INDEX; + common = &(channel->common[index]); + + if (common->fmt.type != tbuf.type) + return -EINVAL; + + if (!fh->io_allowed[index]) { + v4l2_err(vpif_dev->driver, "fh->io_allowed\n"); + return -EACCES; + } + + if (!(list_empty(&common->dma_queue)) || + (common->curFrm != common->nextFrm) || + !(common->started) || + (common->started && (0 == channel->field_id))) + return videobuf_qbuf(&common->buffer_queue, buf); + + /* bufferqueue is empty store buffer address in VPIF registers */ + mutex_lock(&common->buffer_queue.vb_lock); + buf1 = common->buffer_queue.bufs[tbuf.index]; + if (buf1->memory != tbuf.memory) { + v4l2_err(vpif_dev->driver, "invalid buffer type\n"); + goto qbuf_exit; + } + + if ((buf1->state == VIDEOBUF_QUEUED) || + (buf1->state == VIDEOBUF_ACTIVE)) { + v4l2_err(vpif_dev->driver, "invalid state\n"); + goto qbuf_exit; + } + + switch (buf1->memory) { + case V4L2_MEMORY_MMAP: + if (buf1->baddr == 0) + goto qbuf_exit; + break; + + case V4L2_MEMORY_USERPTR: + if (tbuf.length < buf1->bsize) + goto qbuf_exit; + + if ((VIDEOBUF_NEEDS_INIT != buf1->state) + && (buf1->baddr != tbuf.m.userptr)) + vpif_buffer_release(&common->buffer_queue, buf1); + buf1->baddr = tbuf.m.userptr; + break; + + default: + goto qbuf_exit; + } + + local_irq_save(flags); + ret = vpif_buffer_prepare(&common->buffer_queue, buf1, + common->buffer_queue.field); + if (ret < 0) { + local_irq_restore(flags); + goto qbuf_exit; + } + + buf1->state = VIDEOBUF_ACTIVE; + addr = buf1->boff; + common->nextFrm = buf1; + if (tbuf.type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) { + common->set_addr((addr + common->ytop_off), + (addr + common->ybtm_off), + (addr + common->ctop_off), + (addr + common->cbtm_off)); + } + + local_irq_restore(flags); + list_add_tail(&buf1->stream, &(common->buffer_queue.stream)); + mutex_unlock(&common->buffer_queue.vb_lock); + return 0; + +qbuf_exit: + mutex_unlock(&common->buffer_queue.vb_lock); + return -EINVAL; +} + +static int vpif_s_std(struct file *file, void *priv, v4l2_std_id *std_id) +{ + int ret = 0; + struct vpif_fh *fh = priv; + struct channel_obj *channel = fh->channel; + struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]); + struct video_obj *vid_ch = &(channel->video); + v4l2_dbg(1, debug, vpif_dev->driver, "VIDIOC_S_STD\n"); + + if (common->started) { + dev_err(vpif_dev, "streaming is started\n"); + return -EBUSY; + } + + /* Call encoder subdevice function to set the standard */ + down_interruptible(&common->lock); + ret = v4l2_subdev_call(vpif_obj.sd[ADV7343_IDX], video, + s_std_output, *std_id); + if (ret < 0) { + v4l2_err(vpif_dev->driver, "Failed to set output standard\n"); + goto s_std_exit; + } + + ret = v4l2_subdev_command(vpif_obj.sd[THS7303_IDX], THS7303_SETVALUE, + std_id); + if (ret < 0) { + v4l2_err(vpif_dev->driver, "Failed to set amplifier\n"); + goto s_std_exit; + } + + /* Get the information about the standard from the decoder */ + vpif_get_std_info(channel); + + if ((vid_ch->std_info.activelines * vid_ch->std_info.activepixels * 2) + > config_params.channel_bufsize[channel->channel_id]) { + dev_err(vpif_dev, "invalid std for this size\n"); + + ret = -EINVAL; + goto s_std_exit; + + } + + ret = v4l2_subdev_command(vpif_obj.sd[ADV7343_IDX], ENCODER_GET_MODE, + &channel->video.stdid); + + if (ret) { + v4l2_err(vpif_dev->driver, "Failed to get encoder mode\n"); + goto s_std_exit; + } + + vpif_get_std_info(channel); + common->fmt.fmt.pix.bytesperline = common->fmt.fmt.pix.width; + + /* Configure the default format information */ + vpif_config_format(channel); + +s_std_exit: + up(&common->lock); + return ret; +} + +static int vpif_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) +{ + u8 index = 0; + struct vpif_fh *fh = priv; + struct channel_obj *channel = fh->channel; + struct common_obj *common = NULL; + index = VPIF_VIDEO_INDEX; + common = &(channel->common[index]); + v4l2_dbg(1, debug, vpif_dev->driver, "VIDIOC_DQBUF\n"); + + if (file->f_flags & O_NONBLOCK) + /* Call videobuf_dqbuf for non blocking mode */ + return videobuf_dqbuf(&common->buffer_queue, p, 1); + else + /* Call videobuf_dqbuf for blocking mode */ + return videobuf_dqbuf(&common->buffer_queue, p, 0); +} + +static int vpif_streamon(struct file *file, void *priv, + enum v4l2_buf_type buftype) +{ + int ret = 0; + u8 index = VPIF_VIDEO_INDEX; + unsigned long addr = 0; + struct vpif_fh *fh = priv; + struct channel_obj *channel = fh->channel; + struct common_obj *common = &(channel->common[index]); + struct channel_obj *oth_ch = vpif_obj.dev[!channel->channel_id]; + struct video_obj *vid_ch = &(channel->video); + struct vpif_params *vpif = &channel->vpifparams; + struct dm646x_vpif_config *vpif_config_data = + vpif_dev->platform_data; + + v4l2_dbg(1, debug, vpif_dev->driver, "VIDIOC_STREAMON\n"); + + if (!fh->io_allowed[index]) { + v4l2_err(vpif_dev->driver, "fh->io_allowed\n"); + return -EACCES; + } + + /* If Streaming is already started, return error */ + if (common->started) { + v4l2_err(vpif_dev->driver, "channel->started\n"); + return -EBUSY; + } + + if ((channel->channel_id == VPIF_CHANNEL2_VIDEO + && oth_ch->common[VPIF_VIDEO_INDEX].started && + channel->video.std_info.ycmux_mode == 0) + || ((channel->channel_id == VPIF_CHANNEL3_VIDEO) + && (2 == oth_ch->common[VPIF_VIDEO_INDEX].started))) { + + v4l2_err(vpif_dev->driver, "other channel is using\n"); + return -EBUSY; + } + + if (index == VPIF_VIDEO_INDEX) { + ret = vpif_check_format(channel, &(common->fmt.fmt.pix)); + if (ret < 0) + return ret; + + } else { + if (!channel->common[VPIF_VIDEO_INDEX].started) + return -EINVAL; + } + + /* Call videobuf_streamon to start streaming in videobuf */ + ret = videobuf_streamon(&common->buffer_queue); + if (ret < 0) { + v4l2_err(vpif_dev->driver, "videobuf_streamon\n"); + return ret; + } + + down_interruptible(&common->lock); + /* If buffer queue is empty, return error */ + if (list_empty(&common->dma_queue)) { + v4l2_err(vpif_dev->driver, "buffer queue is empty\n"); + ret = -EIO; + goto streamon_exit; + } + + /* Get the next frame from the buffer queue */ + common->nextFrm = common->curFrm = + list_entry(common->dma_queue.next, + struct videobuf_buffer, queue); + + list_del(&common->curFrm->queue); + /* Mark state of the current frame to active */ + common->curFrm->state = VIDEOBUF_ACTIVE; + + /* Initialize field_id and started member */ + channel->field_id = 0; + common->started = 1; + if (buftype == V4L2_BUF_TYPE_VIDEO_OUTPUT) { + addr = common->curFrm->boff; + /* Calculate the offset for Y and C data in the buffer */ + vpif_calculate_offsets(channel); + + if ((vid_ch->std_info.frame_format && + ((common->fmt.fmt.pix.field != V4L2_FIELD_NONE) + && (common->fmt.fmt.pix.field != V4L2_FIELD_ANY))) + || (!vid_ch->std_info.frame_format + && (common->fmt.fmt.pix.field == V4L2_FIELD_NONE))) { + + v4l2_err(vpif_dev->driver, + "conflict in field format and std format\n"); + ret = -EINVAL; + goto streamon_exit; + } + + /* clock settings */ + ret = vpif_config_data->set_clock(vid_ch->std_info.ycmux_mode, + vid_ch->std_info.hd_sd); + if (ret < 0) { + v4l2_err(vpif_dev->driver, "can't set clock\n"); + goto streamon_exit; + } + + /* set the parameters and addresses */ + ret = vpif_set_video_params(vpif, channel->channel_id + 2); + if (ret < 0) + goto streamon_exit; + + common->started = ret; + vpif_config_addr(channel, 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 == channel->channel_id) { + channel2_intr_assert(); + channel2_intr_enable(1); + enable_channel2(1); + } + if ((VPIF_CHANNEL3_VIDEO == channel->channel_id) + || (common->started == 2)) { + channel3_intr_assert(); + channel3_intr_enable(1); + enable_channel3(1); + } + channel_first_int[VPIF_VIDEO_INDEX][channel->channel_id] = 1; + } + +streamon_exit: + up(&(common->lock)); + return ret; +} + +static int vpif_streamoff(struct file *file, void *priv, + enum v4l2_buf_type buftype) +{ + u8 index = VPIF_VIDEO_INDEX; + struct vpif_fh *fh = priv; + struct channel_obj *channel = fh->channel; + struct common_obj *common = &(channel->common[index]); + v4l2_dbg(1, debug, vpif_dev->driver, "VIDIOC_STREAMOFF\n"); + + if (!fh->io_allowed[index]) { + v4l2_err(vpif_dev->driver, "fh->io_allowed\n"); + return -EACCES; + } + + if (!common->started) { + v4l2_err(vpif_dev->driver, "channel->started\n"); + return -EINVAL; + } + + down_interruptible(&common->lock); + if (buftype == V4L2_BUF_TYPE_VIDEO_OUTPUT) { + /* disable channel */ + if (VPIF_CHANNEL2_VIDEO == channel->channel_id) { + enable_channel2(0); + channel2_intr_enable(0); + } + if ((VPIF_CHANNEL3_VIDEO == channel->channel_id) || + (2 == common->started)) { + enable_channel3(0); + channel3_intr_enable(0); + } + } + + common->started = 0; + up(&common->lock); + return videobuf_streamoff(&common->buffer_queue); +} + +static int vpif_cropcap(struct file *file, void *priv, + struct v4l2_cropcap *crop) +{ + struct vpif_fh *fh = priv; + struct channel_obj *channel = fh->channel; + struct common_obj *common = &(channel->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) +{ + int index = output->index; + memset(output, 0, sizeof(*output)); + output->index = index; + strcpy(output->name, output_name[index]); + output->type = V4L2_OUTPUT_TYPE_ANALOG; + output->std = DM646X_V4L2_STD; + + return 0; +} + +static int vpif_s_output(struct file *file, void *priv, unsigned int i) +{ + int ret = 0; + struct v4l2_routing route; + struct vpif_fh *fh = priv; + struct channel_obj *channel = fh->channel; + struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]); + v4l2_dbg(1, debug, vpif_dev->driver, "VIDIOC_S_OUTPUT\n"); + down_interruptible(&common->lock); + if (common->started) { + dev_err(vpif_dev, "Streaming is on\n"); + ret = -EBUSY; + goto s_output_exit; + } + + route.output = i; + ret = v4l2_subdev_call(vpif_obj.sd[ADV7343_IDX], video, s_routing, + &route); + if (ret < 0) + v4l2_err(vpif_dev->driver, "Failed to set output standard\n"); + +s_output_exit: + up(&common->lock); + return ret; +} + +static int vpif_g_priority(struct file *file, void *priv, enum v4l2_priority *p) +{ + struct vpif_fh *fh = priv; + struct channel_obj *channel = fh->channel; + + *p = v4l2_prio_max(&channel->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 *channel = fh->channel; + + return v4l2_prio_change(&channel->prio, &fh->prio, p); +} + +static long vpif_param_handler(struct file *file, void *priv, int cmd, + void *arg) +{ + int ret = 0; + struct vpif_fh *fh = priv; + struct channel_obj *channel = fh->channel; + struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]); + struct vpif_params *params = (struct vpif_params *)arg; + v4l2_dbg(1, debug, vpif_dev->driver, "<vpif param handler>\n"); + + + switch (cmd) { + case VPIF_S_VPIF_PARAMS: + v4l2_dbg(1, debug, vpif_dev->driver, "VPIF_S_PARAMS\n"); + if ((VPIF_CHANNEL2_VIDEO == channel->channel_id) + || (VPIF_CHANNEL3_VIDEO == channel->channel_id)) { + if (!fh->initialized) { + v4l2_err(vpif_dev->driver, + "Channel Busy\n"); + return -EBUSY; + } + } + + if (common->started) { + ret = -EBUSY; + break; + } + + down_interruptible(&common->lock); + channel->vpifparams = *params; + up(&common->lock); + break; + + case VPIF_G_VPIF_PARAMS: + v4l2_dbg(1, debug, vpif_dev->driver, "VPIF_G_PARAMS\n"); + down_interruptible(&common->lock); + *params = channel->vpifparams; + up(&common->lock); + break; + + } + + 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_enum_output = vpif_enum_output, + .vidioc_s_output = vpif_s_output, + .vidioc_cropcap = vpif_cropcap, + .vidioc_default = vpif_param_handler, +}; + +static struct v4l2_file_operations vpif_fops = { + .owner = THIS_MODULE, + .open = vpif_open, + .release = vpif_release, + .ioctl = video_ioctl2, + .mmap = vpif_mmap, + .poll = vpif_poll +}; + +static struct video_device vpif_video_template = { + .name = "vpif", + .vfl_type = VID_TYPE_CAPTURE, + .fops = &vpif_fops, + .minor = -1, + .ioctl_ops = &vpif_ioctl_ops, + .tvnorms = DM646X_V4L2_STD, + .current_norm = V4L2_STD_PAL, + +}; + +/*Configure the channels, buffer sizei, request irq */ +static int initialize_vpif(void) +{ + int err = 0, i, j; + int free_channel_objects_index; + int free_buffer_channel_index; + int free_buffer_index; + + /* Default number of buffers should be 3 */ + if ((channel2_numbuffers > 0) && + (channel2_numbuffers < config_params.min_numbuffers)) + channel2_numbuffers = config_params.min_numbuffers; + if ((channel3_numbuffers > 0) && + (channel3_numbuffers < config_params.min_numbuffers)) + channel3_numbuffers = config_params.min_numbuffers; + + /* Set buffer size to min buffers size if invalid buffer size is + * given */ + if (channel2_bufsize < config_params.min_bufsize[VPIF_CHANNEL2_VIDEO]) + channel2_bufsize = + config_params.min_bufsize[VPIF_CHANNEL2_VIDEO]; + if (channel3_bufsize < config_params.min_bufsize[VPIF_CHANNEL3_VIDEO]) + channel3_bufsize = + config_params.min_bufsize[VPIF_CHANNEL3_VIDEO]; + + config_params.numbuffers[VPIF_CHANNEL2_VIDEO] = channel2_numbuffers; + + if (channel2_numbuffers) { + config_params.channel_bufsize[VPIF_CHANNEL2_VIDEO] = + channel2_bufsize; + } + config_params.numbuffers[VPIF_CHANNEL3_VIDEO] = channel3_numbuffers; + + if (channel3_numbuffers) { + config_params.channel_bufsize[VPIF_CHANNEL3_VIDEO] = + channel3_bufsize; + } + + /* Allocate memory for six channel objects */ + for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) { + vpif_obj.dev[i] = + kmalloc(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) +{ + int i, j = 0, k, q, m, err = 0; + struct video_device *vfd = NULL; + struct resource *res; + struct channel_obj *channel = NULL; + struct common_obj *common = NULL; + struct i2c_adapter *i2c_adap; + struct i2c_client *client = NULL; + + vpif_dev = &pdev->dev; + v4l2_dbg(1, debug, vpif_dev->driver, "<vpif_probe>\n"); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + v4l2_err(vpif_dev->driver, + "Error getting platform resource\n"); + return -ENOENT; + } + + if (!request_mem_region(res->start, res->end - res->start + 1, + vpif_dev->driver->name)) { + v4l2_err(vpif_dev->driver, "VPIF: failed request_mem_region\n"); + return -ENXIO; + } + + vpif_base = ioremap_nocache(res->start, res->end - res->start + 1); + if (!vpif_base) { + v4l2_err(vpif_dev->driver, "Unable to ioremap VPIF reg\n"); + return -ENXIO; + } + + vpif_base_addr_init(vpif_base); + + initialize_vpif(); + + 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_DISABLED, + "DM646x_Display", + (void *)(&(vpif_obj.dev[k]->channel_id)))) + goto vpif_int_err; + } + k++; + } + + for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) { + + /* Get the pointer to the channel object */ + channel = vpif_obj.dev[i]; + + /* Allocate memory for video device */ + vfd = video_device_alloc(); + if (ISNULL(vfd)) { + for (j = 0; j < i; j++) { + video_device_release + (vpif_obj.dev[j]->video_dev); + } + iounmap(vpif_base); + return -ENOMEM; + } + + /* Initialize field of video device */ + *vfd = vpif_video_template; + vfd->dev = pdev->dev; + vfd->release = video_device_release; + snprintf(vfd->name, sizeof(vfd->name), + "DM646x_VPIFDisplay_DRIVER_V%d.%d.%d", + (VPIF_DISPLAY_VERSION_CODE >> 16) & 0xff, + (VPIF_DISPLAY_VERSION_CODE >> 8) & 0xff, + (VPIF_DISPLAY_VERSION_CODE) & 0xff); + + /* Set video_dev to the video device */ + channel->video_dev = vfd; + } + + for (j = 0; j < VPIF_DISPLAY_MAX_DEVICES; j++) { + channel = vpif_obj.dev[j]; + /* Initialize field of the channel objects */ + channel->usrs = 0; + for (k = 0; k < VPIF_NUMOBJECTS; k++) { + channel->common[k].numbuffers = 0; + common = &(channel->common[k]); + common->io_usrs = 0; + common->started = 0; + spin_lock_init(&common->irqlock); + init_MUTEX(&common->lock); + common->numbuffers = 0; + common->set_addr = NULL; + common->ytop_off = common->ybtm_off = 0; + common->ctop_off = common->cbtm_off = 0; + common->curFrm = common->nextFrm = NULL; + memset(&common->fmt, 0, sizeof(struct v4l2_format)); + common->numbuffers = config_params.numbuffers[k]; + + } + channel->initialized = 0; + channel->channel_id = j; + if (j < 2) + channel->common[VPIF_VIDEO_INDEX].numbuffers = + config_params.numbuffers[channel->channel_id]; + else + channel->common[VPIF_VIDEO_INDEX].numbuffers = 0; + + memset(&(channel->vpifparams), 0, sizeof(struct vpif_params)); + + /* Initialize prio member of channel object */ + v4l2_prio_init(&channel->prio); + channel->common[VPIF_VIDEO_INDEX].fmt.type = + V4L2_BUF_TYPE_VIDEO_OUTPUT; + + /* register video device */ + v4l2_dbg(1, debug, vpif_dev->driver, + "trying to register vpif device.\n"); + v4l2_dbg(1, debug, vpif_dev->driver, + "channel=%x,channel->video_dev=%x\n", + (int)channel, (int)&channel->video_dev); + + err = video_register_device(channel->video_dev, + VFL_TYPE_GRABBER, vpif_nr[j]); + if (err < 0) + goto probe_out; + } + + err = v4l2_device_register(vpif_dev, &vpif_obj.device); + if (err) { + v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n"); + return err; + } + + i2c_adap = i2c_get_adapter(1); + for (i = 0; i < SUBDEV_COUNT; i++) { + list_for_each_entry(client, &i2c_adap->clients, list) { + if (!strcmp(client->name, subdev_name[i])) + break; + } + if (client == NULL) { + v4l2_err(vpif_dev->driver, "No Subdevice found\n"); + return -ENODEV; + } + + /* Get subdevice data from the client */ + vpif_obj.sd[i] = i2c_get_clientdata(client); + if (vpif_obj.sd[i]) + vpif_obj.sd[i]->grp_id = 1 << i; + + err = v4l2_device_register_subdev(&vpif_obj.device, + vpif_obj.sd[i]); + if (err) + v4l2_err(vpif_dev->driver, + "Error registering v4l2 sub-device\n"); + /* Initialize the subdevice */ + v4l2_subdev_call(vpif_obj.sd[i], core, init, 1); + } + + + return 0; + +probe_out: + for (k = 0; k < j; k++) { + /* Get the pointer to the channel object */ + channel = vpif_obj.dev[k]; + /* Unregister video device */ + video_unregister_device(channel->video_dev); + /* Release video device */ + video_device_release(channel->video_dev); + channel->video_dev = NULL; + } + +vpif_int_err: + v4l2_err(vpif_dev->driver, "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; + } + err = -EBUSY; + + iounmap(vpif_base); + v4l2_dbg(1, debug, vpif_dev->driver, "</vpif_probe>\n"); + + return err; +} + +/* + * vpif_remove: It un-register channels from V4L2 driver + */ +static int vpif_remove(struct platform_device *device) +{ + int i; + struct channel_obj *channel; + v4l2_dbg(1, debug, vpif_dev->driver, "<vpif_remove>\n"); + /* un-register device */ + for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) { + /* Get the pointer to the channel object */ + channel = vpif_obj.dev[i]; + /* Unregister video device */ + video_unregister_device(channel->video_dev); + + channel->video_dev = NULL; + } + v4l2_dbg(1, debug, vpif_dev->driver, "</vpif_remove>\n"); + return 0; +} + +static struct platform_driver vpif_driver = { + .driver = { + .name = "vpif_display", + .owner = THIS_MODULE, + }, + .probe = vpif_probe, + .remove = vpif_remove, +}; + +/* + * vpif_init: This function registers device and driver to the kernel, + * requests irq handler and allocates memory for channel objects + */ +static __init int vpif_init(void) +{ + /* Register driver to the kernel */ + 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) +{ + int i = 0; + int irq_num; + struct platform_device *pdev; + struct resource *res; + + 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++; + } + + iounmap(vpif_base); + platform_driver_unregister(&vpif_driver); + + v4l2_device_unregister(&vpif_obj.device); + + for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) + kfree(vpif_obj.dev[i]); +} + +MODULE_LICENSE("GPL"); +module_init(vpif_init); +module_exit(vpif_cleanup); diff --git a/include/media/davinci/dm646x_display.h b/include/media/davinci/dm646x_display.h new file mode 100644 index 0000000..ef209b8 --- /dev/null +++ b/include/media/davinci/dm646x_display.h @@ -0,0 +1,210 @@ +/* + * DM646x display header file + * + * 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. + */ + +#ifndef DAVINCIHD_DISPLAY_H +#define DAVINCIHD_DISPLAY_H + +#ifdef __KERNEL__ + +/* Header files */ +#include <linux/videodev2.h> +#include <linux/version.h> +#include <media/v4l2-common.h> +#include <media/v4l2-device.h> +#include <media/videobuf-core.h> +#include <media/videobuf-dma-contig.h> +#include <media/davinci/vpif.h> +#endif + +#ifdef __KERNEL__ + +/* for v4l2_subdev interface */ +#define ADV7343_ID (0x01 << 0) +#define THS7303_ID (0x01 << 1) + +#define ADV7343_IDX (0) +#define THS7303_IDX (1) +#define SUBDEV_COUNT (2) + +/* Macros */ +#define VPIF_MAJOR_RELEASE (0) +#define VPIF_MINOR_RELEASE (0) +#define VPIF_BUILD (1) + +#define VPIF_DISPLAY_VERSION_CODE \ + ((VPIF_MAJOR_RELEASE<<16) | (VPIF_MINOR_RELEASE<<8) | VPIF_BUILD) + +#define VPIF_VALID_FIELD(field) \ + (((V4L2_FIELD_ANY == field) || (V4L2_FIELD_NONE == field)) || \ + (((V4L2_FIELD_INTERLACED == field) || (V4L2_FIELD_SEQ_TB == field)) || \ + (V4L2_FIELD_SEQ_BT == field))) + +#define VPIF_DISPLAY_MAX_DEVICES (2) +#define VPIF_SLICED_BUF_SIZE (256) +#define VPIF_SLICED_MAX_SERVICES (3) +#define VPIF_VIDEO_INDEX (0) +#define VPIF_VBI_INDEX (1) +#define VPIF_HBI_INDEX (2) + +/* Setting it to 1 as HBI/VBI support yet to be added , else 3*/ +#define VPIF_NUMOBJECTS (1) + +/* Macros */ +#define ISNULL(p) ((NULL) == (p)) +#define ISALIGNED(a) (0 == (a%8)) + +/* enumerated data types */ +/* Enumerated data type to give id to each device per channel */ +enum vpif_channel_id { + VPIF_CHANNEL2_VIDEO = 0, /* Channel2 Video */ + VPIF_CHANNEL3_VIDEO, /* Channel3 Video */ +}; + +/* structures */ + +struct video_obj { + enum v4l2_field buf_field; + + v4l2_std_id stdid; /* Currently selected or default + standard */ + + u32 latest_only; /* indicate whether to return + most recent displayed frame + only */ + struct vpif_stdinfo std_info; /*Keeps track of the information + about the standard */ +}; + +struct vbi_obj { + struct vpif_vbi_params vbiparams; /* Structure storing + vpif parameters + for the raw vbi data */ + int num_services; +}; + +struct common_obj { + /* Buffer specific parameters */ + u8 *fbuffers[VIDEO_MAX_FRAME]; /* List of buffer pointers for + storing frames */ + u32 numbuffers; /* number of buffers in fbuffers */ + struct videobuf_buffer *curFrm; /* Pointer pointing to current + videobuf_buffer */ + struct videobuf_buffer *nextFrm;/* Pointer pointing to current + videobuf_buffer */ + enum v4l2_memory memory; /* This field keeps track of type + of buffer exchange mechanism + user has selected */ + struct v4l2_format fmt; /* Used to store the format */ + + struct videobuf_queue buffer_queue; /* Buffer queue used in + video-buf */ + struct list_head dma_queue; /* Queue of filled frames */ + spinlock_t irqlock; /* Used in video-buf */ + + /* channel specifc parameters */ + struct semaphore lock; /* lock used to access this + structure */ + u32 io_usrs; /* number of users performing + IO */ + u8 started; /* Indicates whether streaming + started */ + u32 ytop_off; /* offset where Y top starts + from the starting of the + buffer */ + u32 ybtm_off; /* offset where Y bottom starts + from the starting of the + buffer */ + u32 ctop_off; /* offset where C top starts + from the starting of the + buffer */ + u32 cbtm_off; /* offset where C bottom starts + from the starting of the + buffer */ + + /* Function pointer to set the addresses */ + void (*set_addr) (unsigned long, unsigned long, + unsigned long, unsigned long); + + u32 height; + + u32 width; +}; + +struct channel_obj { + /* V4l2 specific parameters */ + struct video_device *video_dev; /* Identifies video device for + this channel */ + struct v4l2_prio_state prio; /* Used to keep track of state of + the priority */ + u32 usrs; /* number of open instances of + the channel */ + u32 field_id; /* Indicates id of the field + which is being displayed */ + u8 initialized; /* flag to indicate whether + encoder is initialized */ + + enum vpif_channel_id channel_id;/* Identifies channel */ + + struct vpif_params vpifparams; + struct common_obj common[VPIF_NUMOBJECTS]; + struct video_obj video; + struct vbi_obj vbi; +}; + +/* File handle structure */ +struct vpif_fh { + struct channel_obj *channel; /* pointer to channel object for + opened device */ + u8 io_allowed[VPIF_NUMOBJECTS]; /* Indicates whether this file handle + is doing IO */ + enum v4l2_priority prio; /* Used to keep track priority of + this instance */ + u8 initialized; /* Used to keep track of whether this + file handle has initialized + channel or not */ +}; + +/* vpif device structure */ +struct vpif_device { + struct channel_obj *dev[VPIF_DISPLAY_NUM_CHANNELS]; + struct v4l2_device device; + struct v4l2_subdev *sd[SUBDEV_COUNT]; +}; + +struct vpif_config_params { + u8 min_numbuffers; + u8 numbuffers[VPIF_DISPLAY_NUM_CHANNELS]; + u32 min_bufsize[VPIF_DISPLAY_NUM_CHANNELS]; + u32 channel_bufsize[VPIF_DISPLAY_NUM_CHANNELS]; +}; + +/* Struct which keeps track of the line numbers for the sliced vbi service */ +struct vpif_service_line { + u16 service_id; + u16 service_line[2]; + u16 enc_service_id; + u8 bytestowrite; +}; + +#endif /* End of __KERNEL__ */ + +/* IOCTLs */ + +#define VPIF_S_VPIF_PARAMS _IOW('V', BASE_VIDIOC_PRIVATE + 1, \ + struct vpif_params) +#define VPIF_G_VPIF_PARAMS _IOR('V', BASE_VIDIOC_PRIVATE + 2, \ + struct vpif_params) + +#endif /* DAVINCIHD_DISPLAY_H */ -- 1.5.6 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
