diff options
Diffstat (limited to 'kernel/drivers/media/usb/cx231xx/cx231xx-video.c')
| -rw-r--r-- | kernel/drivers/media/usb/cx231xx/cx231xx-video.c | 2235 |
1 files changed, 2235 insertions, 0 deletions
diff --git a/kernel/drivers/media/usb/cx231xx/cx231xx-video.c b/kernel/drivers/media/usb/cx231xx/cx231xx-video.c new file mode 100644 index 000000000..c261e160c --- /dev/null +++ b/kernel/drivers/media/usb/cx231xx/cx231xx-video.c @@ -0,0 +1,2235 @@ +/* + cx231xx-video.c - driver for Conexant Cx23100/101/102 + USB video capture devices + + Copyright (C) 2008 <srinivasa.deevi at conexant dot com> + Based on em28xx driver + Based on cx23885 driver + Based on cx88 driver + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include "cx231xx.h" +#include <linux/init.h> +#include <linux/list.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/bitmap.h> +#include <linux/i2c.h> +#include <linux/mm.h> +#include <linux/mutex.h> +#include <linux/slab.h> + +#include <media/v4l2-common.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-event.h> +#include <media/msp3400.h> +#include <media/tuner.h> + +#include "dvb_frontend.h" + +#include "cx231xx-vbi.h" + +#define CX231XX_VERSION "0.0.3" + +#define DRIVER_AUTHOR "Srinivasa Deevi <srinivasa.deevi@conexant.com>" +#define DRIVER_DESC "Conexant cx231xx based USB video device driver" + +#define cx231xx_videodbg(fmt, arg...) do {\ + if (video_debug) \ + printk(KERN_INFO "%s %s :"fmt, \ + dev->name, __func__ , ##arg); } while (0) + +static unsigned int isoc_debug; +module_param(isoc_debug, int, 0644); +MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]"); + +#define cx231xx_isocdbg(fmt, arg...) \ +do {\ + if (isoc_debug) { \ + printk(KERN_INFO "%s %s :"fmt, \ + dev->name, __func__ , ##arg); \ + } \ + } while (0) + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); +MODULE_VERSION(CX231XX_VERSION); + +static unsigned int card[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET }; +static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET }; +static unsigned int vbi_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET }; +static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET }; + +module_param_array(card, int, NULL, 0444); +module_param_array(video_nr, int, NULL, 0444); +module_param_array(vbi_nr, int, NULL, 0444); +module_param_array(radio_nr, int, NULL, 0444); + +MODULE_PARM_DESC(card, "card type"); +MODULE_PARM_DESC(video_nr, "video device numbers"); +MODULE_PARM_DESC(vbi_nr, "vbi device numbers"); +MODULE_PARM_DESC(radio_nr, "radio device numbers"); + +static unsigned int video_debug; +module_param(video_debug, int, 0644); +MODULE_PARM_DESC(video_debug, "enable debug messages [video]"); + +/* supported video standards */ +static struct cx231xx_fmt format[] = { + { + .name = "16bpp YUY2, 4:2:2, packed", + .fourcc = V4L2_PIX_FMT_YUYV, + .depth = 16, + .reg = 0, + }, +}; + + +static int cx231xx_enable_analog_tuner(struct cx231xx *dev) +{ +#ifdef CONFIG_MEDIA_CONTROLLER + struct media_device *mdev = dev->media_dev; + struct media_entity *entity, *decoder = NULL, *source; + struct media_link *link, *found_link = NULL; + int i, ret, active_links = 0; + + if (!mdev) + return 0; + + /* + * This will find the tuner that is connected into the decoder. + * Technically, this is not 100% correct, as the device may be + * using an analog input instead of the tuner. However, as we can't + * do DVB streaming while the DMA engine is being used for V4L2, + * this should be enough for the actual needs. + */ + media_device_for_each_entity(entity, mdev) { + if (entity->type == MEDIA_ENT_T_V4L2_SUBDEV_DECODER) { + decoder = entity; + break; + } + } + if (!decoder) + return 0; + + for (i = 0; i < decoder->num_links; i++) { + link = &decoder->links[i]; + if (link->sink->entity == decoder) { + found_link = link; + if (link->flags & MEDIA_LNK_FL_ENABLED) + active_links++; + break; + } + } + + if (active_links == 1 || !found_link) + return 0; + + source = found_link->source->entity; + for (i = 0; i < source->num_links; i++) { + struct media_entity *sink; + int flags = 0; + + link = &source->links[i]; + sink = link->sink->entity; + + if (sink == entity) + flags = MEDIA_LNK_FL_ENABLED; + + ret = media_entity_setup_link(link, flags); + if (ret) { + dev_err(dev->dev, + "Couldn't change link %s->%s to %s. Error %d\n", + source->name, sink->name, + flags ? "enabled" : "disabled", + ret); + return ret; + } else + dev_dbg(dev->dev, + "link %s->%s was %s\n", + source->name, sink->name, + flags ? "ENABLED" : "disabled"); + } +#endif + return 0; +} + +/* ------------------------------------------------------------------ + Video buffer and parser functions + ------------------------------------------------------------------*/ + +/* + * Announces that a buffer were filled and request the next + */ +static inline void buffer_filled(struct cx231xx *dev, + struct cx231xx_dmaqueue *dma_q, + struct cx231xx_buffer *buf) +{ + /* Advice that buffer was filled */ + cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i); + buf->vb.state = VIDEOBUF_DONE; + buf->vb.field_count++; + v4l2_get_timestamp(&buf->vb.ts); + + if (dev->USE_ISO) + dev->video_mode.isoc_ctl.buf = NULL; + else + dev->video_mode.bulk_ctl.buf = NULL; + + list_del(&buf->vb.queue); + wake_up(&buf->vb.done); +} + +static inline void print_err_status(struct cx231xx *dev, int packet, int status) +{ + char *errmsg = "Unknown"; + + switch (status) { + case -ENOENT: + errmsg = "unlinked synchronuously"; + break; + case -ECONNRESET: + errmsg = "unlinked asynchronuously"; + break; + case -ENOSR: + errmsg = "Buffer error (overrun)"; + break; + case -EPIPE: + errmsg = "Stalled (device not responding)"; + break; + case -EOVERFLOW: + errmsg = "Babble (bad cable?)"; + break; + case -EPROTO: + errmsg = "Bit-stuff error (bad cable?)"; + break; + case -EILSEQ: + errmsg = "CRC/Timeout (could be anything)"; + break; + case -ETIME: + errmsg = "Device does not respond"; + break; + } + if (packet < 0) { + cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg); + } else { + cx231xx_isocdbg("URB packet %d, status %d [%s].\n", + packet, status, errmsg); + } +} + +/* + * video-buf generic routine to get the next available buffer + */ +static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q, + struct cx231xx_buffer **buf) +{ + struct cx231xx_video_mode *vmode = + container_of(dma_q, struct cx231xx_video_mode, vidq); + struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode); + + char *outp; + + if (list_empty(&dma_q->active)) { + cx231xx_isocdbg("No active queue to serve\n"); + if (dev->USE_ISO) + dev->video_mode.isoc_ctl.buf = NULL; + else + dev->video_mode.bulk_ctl.buf = NULL; + *buf = NULL; + return; + } + + /* Get the next buffer */ + *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue); + + /* Cleans up buffer - Useful for testing for frame/URB loss */ + outp = videobuf_to_vmalloc(&(*buf)->vb); + memset(outp, 0, (*buf)->vb.size); + + if (dev->USE_ISO) + dev->video_mode.isoc_ctl.buf = *buf; + else + dev->video_mode.bulk_ctl.buf = *buf; + + return; +} + +/* + * Controls the isoc copy of each urb packet + */ +static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb) +{ + struct cx231xx_dmaqueue *dma_q = urb->context; + int i; + unsigned char *p_buffer; + u32 bytes_parsed = 0, buffer_size = 0; + u8 sav_eav = 0; + + if (!dev) + return 0; + + if (dev->state & DEV_DISCONNECTED) + return 0; + + if (urb->status < 0) { + print_err_status(dev, -1, urb->status); + if (urb->status == -ENOENT) + return 0; + } + + for (i = 0; i < urb->number_of_packets; i++) { + int status = urb->iso_frame_desc[i].status; + + if (status < 0) { + print_err_status(dev, i, status); + if (urb->iso_frame_desc[i].status != -EPROTO) + continue; + } + + if (urb->iso_frame_desc[i].actual_length <= 0) { + /* cx231xx_isocdbg("packet %d is empty",i); - spammy */ + continue; + } + if (urb->iso_frame_desc[i].actual_length > + dev->video_mode.max_pkt_size) { + cx231xx_isocdbg("packet bigger than packet size"); + continue; + } + + /* get buffer pointer and length */ + p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset; + buffer_size = urb->iso_frame_desc[i].actual_length; + bytes_parsed = 0; + + if (dma_q->is_partial_line) { + /* Handle the case of a partial line */ + sav_eav = dma_q->last_sav; + } else { + /* Check for a SAV/EAV overlapping + the buffer boundary */ + sav_eav = + cx231xx_find_boundary_SAV_EAV(p_buffer, + dma_q->partial_buf, + &bytes_parsed); + } + + sav_eav &= 0xF0; + /* Get the first line if we have some portion of an SAV/EAV from + the last buffer or a partial line */ + if (sav_eav) { + bytes_parsed += cx231xx_get_video_line(dev, dma_q, + sav_eav, /* SAV/EAV */ + p_buffer + bytes_parsed, /* p_buffer */ + buffer_size - bytes_parsed);/* buf size */ + } + + /* Now parse data that is completely in this buffer */ + /* dma_q->is_partial_line = 0; */ + + while (bytes_parsed < buffer_size) { + u32 bytes_used = 0; + + sav_eav = cx231xx_find_next_SAV_EAV( + p_buffer + bytes_parsed, /* p_buffer */ + buffer_size - bytes_parsed, /* buf size */ + &bytes_used);/* bytes used to get SAV/EAV */ + + bytes_parsed += bytes_used; + + sav_eav &= 0xF0; + if (sav_eav && (bytes_parsed < buffer_size)) { + bytes_parsed += cx231xx_get_video_line(dev, + dma_q, sav_eav, /* SAV/EAV */ + p_buffer + bytes_parsed,/* p_buffer */ + buffer_size - bytes_parsed);/*buf size*/ + } + } + + /* Save the last four bytes of the buffer so we can check the + buffer boundary condition next time */ + memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4); + bytes_parsed = 0; + + } + return 1; +} + +static inline int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb) +{ + struct cx231xx_dmaqueue *dma_q = urb->context; + unsigned char *p_buffer; + u32 bytes_parsed = 0, buffer_size = 0; + u8 sav_eav = 0; + + if (!dev) + return 0; + + if (dev->state & DEV_DISCONNECTED) + return 0; + + if (urb->status < 0) { + print_err_status(dev, -1, urb->status); + if (urb->status == -ENOENT) + return 0; + } + + if (1) { + + /* get buffer pointer and length */ + p_buffer = urb->transfer_buffer; + buffer_size = urb->actual_length; + bytes_parsed = 0; + + if (dma_q->is_partial_line) { + /* Handle the case of a partial line */ + sav_eav = dma_q->last_sav; + } else { + /* Check for a SAV/EAV overlapping + the buffer boundary */ + sav_eav = + cx231xx_find_boundary_SAV_EAV(p_buffer, + dma_q->partial_buf, + &bytes_parsed); + } + + sav_eav &= 0xF0; + /* Get the first line if we have some portion of an SAV/EAV from + the last buffer or a partial line */ + if (sav_eav) { + bytes_parsed += cx231xx_get_video_line(dev, dma_q, + sav_eav, /* SAV/EAV */ + p_buffer + bytes_parsed, /* p_buffer */ + buffer_size - bytes_parsed);/* buf size */ + } + + /* Now parse data that is completely in this buffer */ + /* dma_q->is_partial_line = 0; */ + + while (bytes_parsed < buffer_size) { + u32 bytes_used = 0; + + sav_eav = cx231xx_find_next_SAV_EAV( + p_buffer + bytes_parsed, /* p_buffer */ + buffer_size - bytes_parsed, /* buf size */ + &bytes_used);/* bytes used to get SAV/EAV */ + + bytes_parsed += bytes_used; + + sav_eav &= 0xF0; + if (sav_eav && (bytes_parsed < buffer_size)) { + bytes_parsed += cx231xx_get_video_line(dev, + dma_q, sav_eav, /* SAV/EAV */ + p_buffer + bytes_parsed,/* p_buffer */ + buffer_size - bytes_parsed);/*buf size*/ + } + } + + /* Save the last four bytes of the buffer so we can check the + buffer boundary condition next time */ + memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4); + bytes_parsed = 0; + + } + return 1; +} + + +u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf, + u32 *p_bytes_used) +{ + u32 bytes_used; + u8 boundary_bytes[8]; + u8 sav_eav = 0; + + *p_bytes_used = 0; + + /* Create an array of the last 4 bytes of the last buffer and the first + 4 bytes of the current buffer. */ + + memcpy(boundary_bytes, partial_buf, 4); + memcpy(boundary_bytes + 4, p_buffer, 4); + + /* Check for the SAV/EAV in the boundary buffer */ + sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8, + &bytes_used); + + if (sav_eav) { + /* found a boundary SAV/EAV. Updates the bytes used to reflect + only those used in the new buffer */ + *p_bytes_used = bytes_used - 4; + } + + return sav_eav; +} + +u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used) +{ + u32 i; + u8 sav_eav = 0; + + /* + * Don't search if the buffer size is less than 4. It causes a page + * fault since buffer_size - 4 evaluates to a large number in that + * case. + */ + if (buffer_size < 4) { + *p_bytes_used = buffer_size; + return 0; + } + + for (i = 0; i < (buffer_size - 3); i++) { + + if ((p_buffer[i] == 0xFF) && + (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) { + + *p_bytes_used = i + 4; + sav_eav = p_buffer[i + 3]; + return sav_eav; + } + } + + *p_bytes_used = buffer_size; + return 0; +} + +u32 cx231xx_get_video_line(struct cx231xx *dev, + struct cx231xx_dmaqueue *dma_q, u8 sav_eav, + u8 *p_buffer, u32 buffer_size) +{ + u32 bytes_copied = 0; + int current_field = -1; + + switch (sav_eav) { + case SAV_ACTIVE_VIDEO_FIELD1: + /* looking for skipped line which occurred in PAL 720x480 mode. + In this case, there will be no active data contained + between the SAV and EAV */ + if ((buffer_size > 3) && (p_buffer[0] == 0xFF) && + (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) && + ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) || + (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) || + (p_buffer[3] == EAV_VBLANK_FIELD1) || + (p_buffer[3] == EAV_VBLANK_FIELD2))) + return bytes_copied; + current_field = 1; + break; + + case SAV_ACTIVE_VIDEO_FIELD2: + /* looking for skipped line which occurred in PAL 720x480 mode. + In this case, there will be no active data contained between + the SAV and EAV */ + if ((buffer_size > 3) && (p_buffer[0] == 0xFF) && + (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) && + ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) || + (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) || + (p_buffer[3] == EAV_VBLANK_FIELD1) || + (p_buffer[3] == EAV_VBLANK_FIELD2))) + return bytes_copied; + current_field = 2; + break; + } + + dma_q->last_sav = sav_eav; + + bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer, + buffer_size, current_field); + + return bytes_copied; +} + +u32 cx231xx_copy_video_line(struct cx231xx *dev, + struct cx231xx_dmaqueue *dma_q, u8 *p_line, + u32 length, int field_number) +{ + u32 bytes_to_copy; + struct cx231xx_buffer *buf; + u32 _line_size = dev->width * 2; + + if (dma_q->current_field != field_number) + cx231xx_reset_video_buffer(dev, dma_q); + + /* get the buffer pointer */ + if (dev->USE_ISO) + buf = dev->video_mode.isoc_ctl.buf; + else + buf = dev->video_mode.bulk_ctl.buf; + + /* Remember the field number for next time */ + dma_q->current_field = field_number; + + bytes_to_copy = dma_q->bytes_left_in_line; + if (bytes_to_copy > length) + bytes_to_copy = length; + + if (dma_q->lines_completed >= dma_q->lines_per_field) { + dma_q->bytes_left_in_line -= bytes_to_copy; + dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ? + 0 : 1; + return 0; + } + + dma_q->is_partial_line = 1; + + /* If we don't have a buffer, just return the number of bytes we would + have copied if we had a buffer. */ + if (!buf) { + dma_q->bytes_left_in_line -= bytes_to_copy; + dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) + ? 0 : 1; + return bytes_to_copy; + } + + /* copy the data to video buffer */ + cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy); + + dma_q->pos += bytes_to_copy; + dma_q->bytes_left_in_line -= bytes_to_copy; + + if (dma_q->bytes_left_in_line == 0) { + dma_q->bytes_left_in_line = _line_size; + dma_q->lines_completed++; + dma_q->is_partial_line = 0; + + if (cx231xx_is_buffer_done(dev, dma_q) && buf) { + buffer_filled(dev, dma_q, buf); + + dma_q->pos = 0; + buf = NULL; + dma_q->lines_completed = 0; + } + } + + return bytes_to_copy; +} + +void cx231xx_reset_video_buffer(struct cx231xx *dev, + struct cx231xx_dmaqueue *dma_q) +{ + struct cx231xx_buffer *buf; + + /* handle the switch from field 1 to field 2 */ + if (dma_q->current_field == 1) { + if (dma_q->lines_completed >= dma_q->lines_per_field) + dma_q->field1_done = 1; + else + dma_q->field1_done = 0; + } + + if (dev->USE_ISO) + buf = dev->video_mode.isoc_ctl.buf; + else + buf = dev->video_mode.bulk_ctl.buf; + + if (buf == NULL) { + /* first try to get the buffer */ + get_next_buf(dma_q, &buf); + + dma_q->pos = 0; + dma_q->field1_done = 0; + dma_q->current_field = -1; + } + + /* reset the counters */ + dma_q->bytes_left_in_line = dev->width << 1; + dma_q->lines_completed = 0; +} + +int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q, + u8 *p_buffer, u32 bytes_to_copy) +{ + u8 *p_out_buffer = NULL; + u32 current_line_bytes_copied = 0; + struct cx231xx_buffer *buf; + u32 _line_size = dev->width << 1; + void *startwrite; + int offset, lencopy; + + if (dev->USE_ISO) + buf = dev->video_mode.isoc_ctl.buf; + else + buf = dev->video_mode.bulk_ctl.buf; + + if (buf == NULL) + return -1; + + p_out_buffer = videobuf_to_vmalloc(&buf->vb); + + current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line; + + /* Offset field 2 one line from the top of the buffer */ + offset = (dma_q->current_field == 1) ? 0 : _line_size; + + /* Offset for field 2 */ + startwrite = p_out_buffer + offset; + + /* lines already completed in the current field */ + startwrite += (dma_q->lines_completed * _line_size * 2); + + /* bytes already completed in the current line */ + startwrite += current_line_bytes_copied; + + lencopy = dma_q->bytes_left_in_line > bytes_to_copy ? + bytes_to_copy : dma_q->bytes_left_in_line; + + if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size)) + return 0; + + /* The below copies the UYVY data straight into video buffer */ + cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy); + + return 0; +} + +void cx231xx_swab(u16 *from, u16 *to, u16 len) +{ + u16 i; + + if (len <= 0) + return; + + for (i = 0; i < len / 2; i++) + to[i] = (from[i] << 8) | (from[i] >> 8); +} + +u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q) +{ + u8 buffer_complete = 0; + + /* Dual field stream */ + buffer_complete = ((dma_q->current_field == 2) && + (dma_q->lines_completed >= dma_q->lines_per_field) && + dma_q->field1_done); + + return buffer_complete; +} + +/* ------------------------------------------------------------------ + Videobuf operations + ------------------------------------------------------------------*/ + +static int +buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) +{ + struct cx231xx_fh *fh = vq->priv_data; + struct cx231xx *dev = fh->dev; + + *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3; + if (0 == *count) + *count = CX231XX_DEF_BUF; + + if (*count < CX231XX_MIN_BUF) + *count = CX231XX_MIN_BUF; + + + cx231xx_enable_analog_tuner(dev); + + return 0; +} + +/* This is called *without* dev->slock held; please keep it that way */ +static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf) +{ + struct cx231xx_fh *fh = vq->priv_data; + struct cx231xx *dev = fh->dev; + unsigned long flags = 0; + + if (in_interrupt()) + BUG(); + + /* We used to wait for the buffer to finish here, but this didn't work + because, as we were keeping the state as VIDEOBUF_QUEUED, + videobuf_queue_cancel marked it as finished for us. + (Also, it could wedge forever if the hardware was misconfigured.) + + This should be safe; by the time we get here, the buffer isn't + queued anymore. If we ever start marking the buffers as + VIDEOBUF_ACTIVE, it won't be, though. + */ + spin_lock_irqsave(&dev->video_mode.slock, flags); + if (dev->USE_ISO) { + if (dev->video_mode.isoc_ctl.buf == buf) + dev->video_mode.isoc_ctl.buf = NULL; + } else { + if (dev->video_mode.bulk_ctl.buf == buf) + dev->video_mode.bulk_ctl.buf = NULL; + } + spin_unlock_irqrestore(&dev->video_mode.slock, flags); + + videobuf_vmalloc_free(&buf->vb); + buf->vb.state = VIDEOBUF_NEEDS_INIT; +} + +static int +buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, + enum v4l2_field field) +{ + struct cx231xx_fh *fh = vq->priv_data; + struct cx231xx_buffer *buf = + container_of(vb, struct cx231xx_buffer, vb); + struct cx231xx *dev = fh->dev; + int rc = 0, urb_init = 0; + + /* The only currently supported format is 16 bits/pixel */ + buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth + + 7) >> 3; + if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) + return -EINVAL; + + buf->vb.width = dev->width; + buf->vb.height = dev->height; + buf->vb.field = field; + + if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { + rc = videobuf_iolock(vq, &buf->vb, NULL); + if (rc < 0) + goto fail; + } + + if (dev->USE_ISO) { + if (!dev->video_mode.isoc_ctl.num_bufs) + urb_init = 1; + } else { + if (!dev->video_mode.bulk_ctl.num_bufs) + urb_init = 1; + } + dev_dbg(dev->dev, + "urb_init=%d dev->video_mode.max_pkt_size=%d\n", + urb_init, dev->video_mode.max_pkt_size); + if (urb_init) { + dev->mode_tv = 0; + if (dev->USE_ISO) + rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS, + CX231XX_NUM_BUFS, + dev->video_mode.max_pkt_size, + cx231xx_isoc_copy); + else + rc = cx231xx_init_bulk(dev, CX231XX_NUM_PACKETS, + CX231XX_NUM_BUFS, + dev->video_mode.max_pkt_size, + cx231xx_bulk_copy); + if (rc < 0) + goto fail; + } + + buf->vb.state = VIDEOBUF_PREPARED; + + return 0; + +fail: + free_buffer(vq, buf); + return rc; +} + +static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) +{ + struct cx231xx_buffer *buf = + container_of(vb, struct cx231xx_buffer, vb); + struct cx231xx_fh *fh = vq->priv_data; + struct cx231xx *dev = fh->dev; + struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq; + + buf->vb.state = VIDEOBUF_QUEUED; + list_add_tail(&buf->vb.queue, &vidq->active); + +} + +static void buffer_release(struct videobuf_queue *vq, + struct videobuf_buffer *vb) +{ + struct cx231xx_buffer *buf = + container_of(vb, struct cx231xx_buffer, vb); + struct cx231xx_fh *fh = vq->priv_data; + struct cx231xx *dev = (struct cx231xx *)fh->dev; + + cx231xx_isocdbg("cx231xx: called buffer_release\n"); + + free_buffer(vq, buf); +} + +static struct videobuf_queue_ops cx231xx_video_qops = { + .buf_setup = buffer_setup, + .buf_prepare = buffer_prepare, + .buf_queue = buffer_queue, + .buf_release = buffer_release, +}; + +/********************* v4l2 interface **************************************/ + +void video_mux(struct cx231xx *dev, int index) +{ + dev->video_input = index; + dev->ctl_ainput = INPUT(index)->amux; + + cx231xx_set_video_input_mux(dev, index); + + cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0); + + cx231xx_set_audio_input(dev, dev->ctl_ainput); + + dev_dbg(dev->dev, "video_mux : %d\n", index); + + /* do mode control overrides if required */ + cx231xx_do_mode_ctrl_overrides(dev); +} + +/* Usage lock check functions */ +static int res_get(struct cx231xx_fh *fh) +{ + struct cx231xx *dev = fh->dev; + int rc = 0; + + /* This instance already has stream_on */ + if (fh->stream_on) + return rc; + + if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { + if (dev->stream_on) + return -EBUSY; + dev->stream_on = 1; + } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { + if (dev->vbi_stream_on) + return -EBUSY; + dev->vbi_stream_on = 1; + } else + return -EINVAL; + + fh->stream_on = 1; + + return rc; +} + +static int res_check(struct cx231xx_fh *fh) +{ + return fh->stream_on; +} + +static void res_free(struct cx231xx_fh *fh) +{ + struct cx231xx *dev = fh->dev; + + fh->stream_on = 0; + + if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + dev->stream_on = 0; + if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) + dev->vbi_stream_on = 0; +} + +static int check_dev(struct cx231xx *dev) +{ + if (dev->state & DEV_DISCONNECTED) { + dev_err(dev->dev, "v4l2 ioctl: device not present\n"); + return -ENODEV; + } + return 0; +} + +/* ------------------------------------------------------------------ + IOCTL vidioc handling + ------------------------------------------------------------------*/ + +static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + + f->fmt.pix.width = dev->width; + f->fmt.pix.height = dev->height; + f->fmt.pix.pixelformat = dev->format->fourcc; + f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3; + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height; + f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; + + f->fmt.pix.field = V4L2_FIELD_INTERLACED; + + return 0; +} + +static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(format); i++) + if (format[i].fourcc == fourcc) + return &format[i]; + + return NULL; +} + +static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + unsigned int width = f->fmt.pix.width; + unsigned int height = f->fmt.pix.height; + unsigned int maxw = norm_maxw(dev); + unsigned int maxh = norm_maxh(dev); + struct cx231xx_fmt *fmt; + + fmt = format_by_fourcc(f->fmt.pix.pixelformat); + if (!fmt) { + cx231xx_videodbg("Fourcc format (%08x) invalid.\n", + f->fmt.pix.pixelformat); + return -EINVAL; + } + + /* width must even because of the YUYV format + height must be even because of interlacing */ + v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0); + + f->fmt.pix.width = width; + f->fmt.pix.height = height; + f->fmt.pix.pixelformat = fmt->fourcc; + f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3; + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height; + f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; + f->fmt.pix.field = V4L2_FIELD_INTERLACED; + + return 0; +} + +static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + int rc; + struct cx231xx_fmt *fmt; + struct v4l2_mbus_framefmt mbus_fmt; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + vidioc_try_fmt_vid_cap(file, priv, f); + + fmt = format_by_fourcc(f->fmt.pix.pixelformat); + if (!fmt) + return -EINVAL; + + if (videobuf_queue_is_busy(&fh->vb_vidq)) { + dev_err(dev->dev, "%s: queue busy\n", __func__); + return -EBUSY; + } + + if (dev->stream_on && !fh->stream_on) { + dev_err(dev->dev, + "%s: device in use by another fh\n", __func__); + return -EBUSY; + } + + /* set new image size */ + dev->width = f->fmt.pix.width; + dev->height = f->fmt.pix.height; + dev->format = fmt; + + v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, MEDIA_BUS_FMT_FIXED); + call_all(dev, video, s_mbus_fmt, &mbus_fmt); + v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt); + + return rc; +} + +static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + + *id = dev->norm; + return 0; +} + +static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + struct v4l2_mbus_framefmt mbus_fmt; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + if (dev->norm == norm) + return 0; + + if (videobuf_queue_is_busy(&fh->vb_vidq)) + return -EBUSY; + + dev->norm = norm; + + /* Adjusts width/height, if needed */ + dev->width = 720; + dev->height = (dev->norm & V4L2_STD_625_50) ? 576 : 480; + + call_all(dev, video, s_std, dev->norm); + + /* We need to reset basic properties in the decoder related to + resolution (since a standard change effects things like the number + of lines in VACT, etc) */ + memset(&mbus_fmt, 0, sizeof(mbus_fmt)); + mbus_fmt.code = MEDIA_BUS_FMT_FIXED; + mbus_fmt.width = dev->width; + mbus_fmt.height = dev->height; + call_all(dev, video, s_mbus_fmt, &mbus_fmt); + + /* do mode control overrides */ + cx231xx_do_mode_ctrl_overrides(dev); + + return 0; +} + +static const char *iname[] = { + [CX231XX_VMUX_COMPOSITE1] = "Composite1", + [CX231XX_VMUX_SVIDEO] = "S-Video", + [CX231XX_VMUX_TELEVISION] = "Television", + [CX231XX_VMUX_CABLE] = "Cable TV", + [CX231XX_VMUX_DVB] = "DVB", + [CX231XX_VMUX_DEBUG] = "for debug only", +}; + +int cx231xx_enum_input(struct file *file, void *priv, + struct v4l2_input *i) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + u32 gen_stat; + unsigned int ret, n; + + n = i->index; + if (n >= MAX_CX231XX_INPUT) + return -EINVAL; + if (0 == INPUT(n)->type) + return -EINVAL; + + i->index = n; + i->type = V4L2_INPUT_TYPE_CAMERA; + + strcpy(i->name, iname[INPUT(n)->type]); + + if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) || + (CX231XX_VMUX_CABLE == INPUT(n)->type)) + i->type = V4L2_INPUT_TYPE_TUNER; + + i->std = dev->vdev.tvnorms; + + /* If they are asking about the active input, read signal status */ + if (n == dev->video_input) { + ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS, + GEN_STAT, 2, &gen_stat, 4); + if (ret > 0) { + if ((gen_stat & FLD_VPRES) == 0x00) + i->status |= V4L2_IN_ST_NO_SIGNAL; + if ((gen_stat & FLD_HLOCK) == 0x00) + i->status |= V4L2_IN_ST_NO_H_LOCK; + } + } + + return 0; +} + +int cx231xx_g_input(struct file *file, void *priv, unsigned int *i) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + + *i = dev->video_input; + + return 0; +} + +int cx231xx_s_input(struct file *file, void *priv, unsigned int i) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + int rc; + + dev->mode_tv = 0; + rc = check_dev(dev); + if (rc < 0) + return rc; + + if (i >= MAX_CX231XX_INPUT) + return -EINVAL; + if (0 == INPUT(i)->type) + return -EINVAL; + + video_mux(dev, i); + + if (INPUT(i)->type == CX231XX_VMUX_TELEVISION || + INPUT(i)->type == CX231XX_VMUX_CABLE) { + /* There's a tuner, so reset the standard and put it on the + last known frequency (since it was probably powered down + until now */ + call_all(dev, video, s_std, dev->norm); + } + + return 0; +} + +int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + if (0 != t->index) + return -EINVAL; + + strcpy(t->name, "Tuner"); + + t->type = V4L2_TUNER_ANALOG_TV; + t->capability = V4L2_TUNER_CAP_NORM; + t->rangehigh = 0xffffffffUL; + t->signal = 0xffff; /* LOCKED */ + call_all(dev, tuner, g_tuner, t); + + return 0; +} + +int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + if (0 != t->index) + return -EINVAL; +#if 0 + call_all(dev, tuner, s_tuner, t); +#endif + return 0; +} + +int cx231xx_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *f) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + + if (f->tuner) + return -EINVAL; + + f->frequency = dev->ctl_freq; + + return 0; +} + +int cx231xx_s_frequency(struct file *file, void *priv, + const struct v4l2_frequency *f) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + struct v4l2_frequency new_freq = *f; + int rc; + u32 if_frequency = 5400000; + + dev_dbg(dev->dev, + "Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n", + f->frequency, f->type); + + rc = check_dev(dev); + if (rc < 0) + return rc; + + if (0 != f->tuner) + return -EINVAL; + + /* set pre channel change settings in DIF first */ + rc = cx231xx_tuner_pre_channel_change(dev); + + call_all(dev, tuner, s_frequency, f); + call_all(dev, tuner, g_frequency, &new_freq); + dev->ctl_freq = new_freq.frequency; + + /* set post channel change settings in DIF first */ + rc = cx231xx_tuner_post_channel_change(dev); + + if (dev->tuner_type == TUNER_NXP_TDA18271) { + if (dev->norm & (V4L2_STD_MN | V4L2_STD_NTSC_443)) + if_frequency = 5400000; /*5.4MHz */ + else if (dev->norm & V4L2_STD_B) + if_frequency = 6000000; /*6.0MHz */ + else if (dev->norm & (V4L2_STD_PAL_DK | V4L2_STD_SECAM_DK)) + if_frequency = 6900000; /*6.9MHz */ + else if (dev->norm & V4L2_STD_GH) + if_frequency = 7100000; /*7.1MHz */ + else if (dev->norm & V4L2_STD_PAL_I) + if_frequency = 7250000; /*7.25MHz */ + else if (dev->norm & V4L2_STD_SECAM_L) + if_frequency = 6900000; /*6.9MHz */ + else if (dev->norm & V4L2_STD_SECAM_LC) + if_frequency = 1250000; /*1.25MHz */ + + dev_dbg(dev->dev, + "if_frequency is set to %d\n", if_frequency); + cx231xx_set_Colibri_For_LowIF(dev, if_frequency, 1, 1); + + update_HH_register_after_set_DIF(dev); + } + + dev_dbg(dev->dev, "Set New FREQUENCY to %d\n", f->frequency); + + return rc; +} + +#ifdef CONFIG_VIDEO_ADV_DEBUG + +int cx231xx_g_chip_info(struct file *file, void *fh, + struct v4l2_dbg_chip_info *chip) +{ + switch (chip->match.addr) { + case 0: /* Cx231xx - internal registers */ + return 0; + case 1: /* AFE - read byte */ + strlcpy(chip->name, "AFE (byte)", sizeof(chip->name)); + return 0; + case 2: /* Video Block - read byte */ + strlcpy(chip->name, "Video (byte)", sizeof(chip->name)); + return 0; + case 3: /* I2S block - read byte */ + strlcpy(chip->name, "I2S (byte)", sizeof(chip->name)); + return 0; + case 4: /* AFE - read dword */ + strlcpy(chip->name, "AFE (dword)", sizeof(chip->name)); + return 0; + case 5: /* Video Block - read dword */ + strlcpy(chip->name, "Video (dword)", sizeof(chip->name)); + return 0; + case 6: /* I2S Block - read dword */ + strlcpy(chip->name, "I2S (dword)", sizeof(chip->name)); + return 0; + } + return -EINVAL; +} + +int cx231xx_g_register(struct file *file, void *priv, + struct v4l2_dbg_register *reg) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + int ret; + u8 value[4] = { 0, 0, 0, 0 }; + u32 data = 0; + + switch (reg->match.addr) { + case 0: /* Cx231xx - internal registers */ + ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, + (u16)reg->reg, value, 4); + reg->val = value[0] | value[1] << 8 | + value[2] << 16 | value[3] << 24; + reg->size = 4; + break; + case 1: /* AFE - read byte */ + ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS, + (u16)reg->reg, 2, &data, 1); + reg->val = data; + reg->size = 1; + break; + case 2: /* Video Block - read byte */ + ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS, + (u16)reg->reg, 2, &data, 1); + reg->val = data; + reg->size = 1; + break; + case 3: /* I2S block - read byte */ + ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, + (u16)reg->reg, 1, &data, 1); + reg->val = data; + reg->size = 1; + break; + case 4: /* AFE - read dword */ + ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS, + (u16)reg->reg, 2, &data, 4); + reg->val = data; + reg->size = 4; + break; + case 5: /* Video Block - read dword */ + ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS, + (u16)reg->reg, 2, &data, 4); + reg->val = data; + reg->size = 4; + break; + case 6: /* I2S Block - read dword */ + ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, + (u16)reg->reg, 1, &data, 4); + reg->val = data; + reg->size = 4; + break; + default: + return -EINVAL; + } + return ret < 0 ? ret : 0; +} + +int cx231xx_s_register(struct file *file, void *priv, + const struct v4l2_dbg_register *reg) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + int ret; + u8 data[4] = { 0, 0, 0, 0 }; + + switch (reg->match.addr) { + case 0: /* cx231xx internal registers */ + data[0] = (u8) reg->val; + data[1] = (u8) (reg->val >> 8); + data[2] = (u8) (reg->val >> 16); + data[3] = (u8) (reg->val >> 24); + ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, + (u16)reg->reg, data, 4); + break; + case 1: /* AFE - write byte */ + ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS, + (u16)reg->reg, 2, reg->val, 1); + break; + case 2: /* Video Block - write byte */ + ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS, + (u16)reg->reg, 2, reg->val, 1); + break; + case 3: /* I2S block - write byte */ + ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, + (u16)reg->reg, 1, reg->val, 1); + break; + case 4: /* AFE - write dword */ + ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS, + (u16)reg->reg, 2, reg->val, 4); + break; + case 5: /* Video Block - write dword */ + ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS, + (u16)reg->reg, 2, reg->val, 4); + break; + case 6: /* I2S block - write dword */ + ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, + (u16)reg->reg, 1, reg->val, 4); + break; + default: + return -EINVAL; + } + return ret < 0 ? ret : 0; +} +#endif + +static int vidioc_cropcap(struct file *file, void *priv, + struct v4l2_cropcap *cc) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + + if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + cc->bounds.left = 0; + cc->bounds.top = 0; + cc->bounds.width = dev->width; + cc->bounds.height = dev->height; + cc->defrect = cc->bounds; + cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */ + cc->pixelaspect.denominator = 59; + + return 0; +} + +static int vidioc_streamon(struct file *file, void *priv, + enum v4l2_buf_type type) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + rc = res_get(fh); + + if (likely(rc >= 0)) + rc = videobuf_streamon(&fh->vb_vidq); + + call_all(dev, video, s_stream, 1); + + return rc; +} + +static int vidioc_streamoff(struct file *file, void *priv, + enum v4l2_buf_type type) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + if (type != fh->type) + return -EINVAL; + + cx25840_call(dev, video, s_stream, 0); + + videobuf_streamoff(&fh->vb_vidq); + res_free(fh); + + return 0; +} + +int cx231xx_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct video_device *vdev = video_devdata(file); + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + + strlcpy(cap->driver, "cx231xx", sizeof(cap->driver)); + strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card)); + usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); + + if (vdev->vfl_type == VFL_TYPE_RADIO) + cap->device_caps = V4L2_CAP_RADIO; + else { + cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; + if (vdev->vfl_type == VFL_TYPE_VBI) + cap->device_caps |= V4L2_CAP_VBI_CAPTURE; + else + cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE; + } + if (dev->tuner_type != TUNER_ABSENT) + cap->device_caps |= V4L2_CAP_TUNER; + cap->capabilities = cap->device_caps | V4L2_CAP_READWRITE | + V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE | + V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS; + if (video_is_registered(&dev->radio_dev)) + cap->capabilities |= V4L2_CAP_RADIO; + + return 0; +} + +static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + if (unlikely(f->index >= ARRAY_SIZE(format))) + return -EINVAL; + + strlcpy(f->description, format[f->index].name, sizeof(f->description)); + f->pixelformat = format[f->index].fourcc; + + return 0; +} + +/* RAW VBI ioctls */ + +static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + + f->fmt.vbi.sampling_rate = 6750000 * 4; + f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH; + f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; + f->fmt.vbi.offset = 0; + f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ? + PAL_VBI_START_LINE : NTSC_VBI_START_LINE; + f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ? + PAL_VBI_LINES : NTSC_VBI_LINES; + f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ? + PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263; + f->fmt.vbi.count[1] = f->fmt.vbi.count[0]; + memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved)); + + return 0; + +} + +static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + + f->fmt.vbi.sampling_rate = 6750000 * 4; + f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH; + f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; + f->fmt.vbi.offset = 0; + f->fmt.vbi.flags = 0; + f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ? + PAL_VBI_START_LINE : NTSC_VBI_START_LINE; + f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ? + PAL_VBI_LINES : NTSC_VBI_LINES; + f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ? + PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263; + f->fmt.vbi.count[1] = f->fmt.vbi.count[0]; + memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved)); + + return 0; + +} + +static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + + if (dev->vbi_stream_on && !fh->stream_on) { + dev_err(dev->dev, + "%s device in use by another fh\n", __func__); + return -EBUSY; + } + return vidioc_try_fmt_vbi_cap(file, priv, f); +} + +static int vidioc_reqbufs(struct file *file, void *priv, + struct v4l2_requestbuffers *rb) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + return videobuf_reqbufs(&fh->vb_vidq, rb); +} + +static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + return videobuf_querybuf(&fh->vb_vidq, b); +} + +static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + return videobuf_qbuf(&fh->vb_vidq, b); +} + +static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) +{ + struct cx231xx_fh *fh = priv; + struct cx231xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK); +} + +/* ----------------------------------------------------------- */ +/* RADIO ESPECIFIC IOCTLS */ +/* ----------------------------------------------------------- */ + +static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) +{ + struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev; + + if (t->index) + return -EINVAL; + + strcpy(t->name, "Radio"); + + call_all(dev, tuner, g_tuner, t); + + return 0; +} +static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t) +{ + struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev; + + if (t->index) + return -EINVAL; + + call_all(dev, tuner, s_tuner, t); + + return 0; +} + +/* + * cx231xx_v4l2_open() + * inits the device and starts isoc transfer + */ +static int cx231xx_v4l2_open(struct file *filp) +{ + int radio = 0; + struct video_device *vdev = video_devdata(filp); + struct cx231xx *dev = video_drvdata(filp); + struct cx231xx_fh *fh; + enum v4l2_buf_type fh_type = 0; + + switch (vdev->vfl_type) { + case VFL_TYPE_GRABBER: + fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + break; + case VFL_TYPE_VBI: + fh_type = V4L2_BUF_TYPE_VBI_CAPTURE; + break; + case VFL_TYPE_RADIO: + radio = 1; + break; + } + + cx231xx_videodbg("open dev=%s type=%s users=%d\n", + video_device_node_name(vdev), v4l2_type_names[fh_type], + dev->users); + +#if 0 + errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE); + if (errCode < 0) { + dev_err(dev->dev, + "Device locked on digital mode. Can't open analog\n"); + return -EBUSY; + } +#endif + + fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL); + if (!fh) + return -ENOMEM; + if (mutex_lock_interruptible(&dev->lock)) { + kfree(fh); + return -ERESTARTSYS; + } + fh->dev = dev; + fh->type = fh_type; + filp->private_data = fh; + v4l2_fh_init(&fh->fh, vdev); + + if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) { + /* Power up in Analog TV mode */ + if (dev->board.external_av) + cx231xx_set_power_mode(dev, + POLARIS_AVMODE_ENXTERNAL_AV); + else + cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV); + +#if 0 + cx231xx_set_mode(dev, CX231XX_ANALOG_MODE); +#endif + + /* set video alternate setting */ + cx231xx_set_video_alternate(dev); + + /* Needed, since GPIO might have disabled power of + some i2c device */ + cx231xx_config_i2c(dev); + + /* device needs to be initialized before isoc transfer */ + dev->video_input = dev->video_input > 2 ? 2 : dev->video_input; + + } + if (radio) { + cx231xx_videodbg("video_open: setting radio device\n"); + + /* cx231xx_start_radio(dev); */ + + call_all(dev, tuner, s_radio); + } + + dev->users++; + + if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops, + NULL, &dev->video_mode.slock, + fh->type, V4L2_FIELD_INTERLACED, + sizeof(struct cx231xx_buffer), + fh, &dev->lock); + if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { + /* Set the required alternate setting VBI interface works in + Bulk mode only */ + cx231xx_set_alt_setting(dev, INDEX_VANC, 0); + + videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops, + NULL, &dev->vbi_mode.slock, + fh->type, V4L2_FIELD_SEQ_TB, + sizeof(struct cx231xx_buffer), + fh, &dev->lock); + } + mutex_unlock(&dev->lock); + v4l2_fh_add(&fh->fh); + + return 0; +} + +/* + * cx231xx_realease_resources() + * unregisters the v4l2,i2c and usb devices + * called when the device gets disconected or at module unload +*/ +void cx231xx_release_analog_resources(struct cx231xx *dev) +{ + + /*FIXME: I2C IR should be disconnected */ + + if (video_is_registered(&dev->radio_dev)) + video_unregister_device(&dev->radio_dev); + if (video_is_registered(&dev->vbi_dev)) { + dev_info(dev->dev, "V4L2 device %s deregistered\n", + video_device_node_name(&dev->vbi_dev)); + video_unregister_device(&dev->vbi_dev); + } + if (video_is_registered(&dev->vdev)) { + dev_info(dev->dev, "V4L2 device %s deregistered\n", + video_device_node_name(&dev->vdev)); + + if (dev->board.has_417) + cx231xx_417_unregister(dev); + + video_unregister_device(&dev->vdev); + } + v4l2_ctrl_handler_free(&dev->ctrl_handler); + v4l2_ctrl_handler_free(&dev->radio_ctrl_handler); +} + +/* + * cx231xx_close() + * stops streaming and deallocates all resources allocated by the v4l2 + * calls and ioctls + */ +static int cx231xx_close(struct file *filp) +{ + struct cx231xx_fh *fh = filp->private_data; + struct cx231xx *dev = fh->dev; + + cx231xx_videodbg("users=%d\n", dev->users); + + cx231xx_videodbg("users=%d\n", dev->users); + if (res_check(fh)) + res_free(fh); + + /* + * To workaround error number=-71 on EP0 for VideoGrabber, + * need exclude following. + * FIXME: It is probably safe to remove most of these, as we're + * now avoiding the alternate setting for INDEX_VANC + */ + if (!dev->board.no_alt_vanc) + if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { + videobuf_stop(&fh->vb_vidq); + videobuf_mmap_free(&fh->vb_vidq); + + /* the device is already disconnect, + free the remaining resources */ + if (dev->state & DEV_DISCONNECTED) { + if (atomic_read(&dev->devlist_count) > 0) { + cx231xx_release_resources(dev); + fh->dev = NULL; + return 0; + } + return 0; + } + + /* do this before setting alternate! */ + cx231xx_uninit_vbi_isoc(dev); + + /* set alternate 0 */ + if (!dev->vbi_or_sliced_cc_mode) + cx231xx_set_alt_setting(dev, INDEX_VANC, 0); + else + cx231xx_set_alt_setting(dev, INDEX_HANC, 0); + + v4l2_fh_del(&fh->fh); + v4l2_fh_exit(&fh->fh); + kfree(fh); + dev->users--; + wake_up_interruptible_nr(&dev->open, 1); + return 0; + } + + v4l2_fh_del(&fh->fh); + dev->users--; + if (!dev->users) { + videobuf_stop(&fh->vb_vidq); + videobuf_mmap_free(&fh->vb_vidq); + + /* the device is already disconnect, + free the remaining resources */ + if (dev->state & DEV_DISCONNECTED) { + cx231xx_release_resources(dev); + fh->dev = NULL; + return 0; + } + + /* Save some power by putting tuner to sleep */ + call_all(dev, core, s_power, 0); + + /* do this before setting alternate! */ + if (dev->USE_ISO) + cx231xx_uninit_isoc(dev); + else + cx231xx_uninit_bulk(dev); + cx231xx_set_mode(dev, CX231XX_SUSPEND); + + /* set alternate 0 */ + cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0); + } + v4l2_fh_exit(&fh->fh); + kfree(fh); + wake_up_interruptible_nr(&dev->open, 1); + return 0; +} + +static int cx231xx_v4l2_close(struct file *filp) +{ + struct cx231xx_fh *fh = filp->private_data; + struct cx231xx *dev = fh->dev; + int rc; + + mutex_lock(&dev->lock); + rc = cx231xx_close(filp); + mutex_unlock(&dev->lock); + return rc; +} + +/* + * cx231xx_v4l2_read() + * will allocate buffers when called for the first time + */ +static ssize_t +cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count, + loff_t *pos) +{ + struct cx231xx_fh *fh = filp->private_data; + struct cx231xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) || + (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) { + rc = res_get(fh); + + if (unlikely(rc < 0)) + return rc; + + if (mutex_lock_interruptible(&dev->lock)) + return -ERESTARTSYS; + rc = videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0, + filp->f_flags & O_NONBLOCK); + mutex_unlock(&dev->lock); + return rc; + } + return 0; +} + +/* + * cx231xx_v4l2_poll() + * will allocate buffers when called for the first time + */ +static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table *wait) +{ + unsigned long req_events = poll_requested_events(wait); + struct cx231xx_fh *fh = filp->private_data; + struct cx231xx *dev = fh->dev; + unsigned res = 0; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return POLLERR; + + rc = res_get(fh); + + if (unlikely(rc < 0)) + return POLLERR; + + if (v4l2_event_pending(&fh->fh)) + res |= POLLPRI; + else + poll_wait(filp, &fh->fh.wait, wait); + + if (!(req_events & (POLLIN | POLLRDNORM))) + return res; + + if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) || + (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type)) { + mutex_lock(&dev->lock); + res |= videobuf_poll_stream(filp, &fh->vb_vidq, wait); + mutex_unlock(&dev->lock); + return res; + } + return res | POLLERR; +} + +/* + * cx231xx_v4l2_mmap() + */ +static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma) +{ + struct cx231xx_fh *fh = filp->private_data; + struct cx231xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + rc = res_get(fh); + + if (unlikely(rc < 0)) + return rc; + + if (mutex_lock_interruptible(&dev->lock)) + return -ERESTARTSYS; + rc = videobuf_mmap_mapper(&fh->vb_vidq, vma); + mutex_unlock(&dev->lock); + + cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n", + (unsigned long)vma->vm_start, + (unsigned long)vma->vm_end - + (unsigned long)vma->vm_start, rc); + + return rc; +} + +static const struct v4l2_file_operations cx231xx_v4l_fops = { + .owner = THIS_MODULE, + .open = cx231xx_v4l2_open, + .release = cx231xx_v4l2_close, + .read = cx231xx_v4l2_read, + .poll = cx231xx_v4l2_poll, + .mmap = cx231xx_v4l2_mmap, + .unlocked_ioctl = video_ioctl2, +}; + +static const struct v4l2_ioctl_ops video_ioctl_ops = { + .vidioc_querycap = cx231xx_querycap, + .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, + .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, + .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, + .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, + .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, + .vidioc_try_fmt_vbi_cap = vidioc_try_fmt_vbi_cap, + .vidioc_s_fmt_vbi_cap = vidioc_s_fmt_vbi_cap, + .vidioc_cropcap = vidioc_cropcap, + .vidioc_reqbufs = vidioc_reqbufs, + .vidioc_querybuf = vidioc_querybuf, + .vidioc_qbuf = vidioc_qbuf, + .vidioc_dqbuf = vidioc_dqbuf, + .vidioc_s_std = vidioc_s_std, + .vidioc_g_std = vidioc_g_std, + .vidioc_enum_input = cx231xx_enum_input, + .vidioc_g_input = cx231xx_g_input, + .vidioc_s_input = cx231xx_s_input, + .vidioc_streamon = vidioc_streamon, + .vidioc_streamoff = vidioc_streamoff, + .vidioc_g_tuner = cx231xx_g_tuner, + .vidioc_s_tuner = cx231xx_s_tuner, + .vidioc_g_frequency = cx231xx_g_frequency, + .vidioc_s_frequency = cx231xx_s_frequency, +#ifdef CONFIG_VIDEO_ADV_DEBUG + .vidioc_g_chip_info = cx231xx_g_chip_info, + .vidioc_g_register = cx231xx_g_register, + .vidioc_s_register = cx231xx_s_register, +#endif + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +static struct video_device cx231xx_vbi_template; + +static const struct video_device cx231xx_video_template = { + .fops = &cx231xx_v4l_fops, + .release = video_device_release_empty, + .ioctl_ops = &video_ioctl_ops, + .tvnorms = V4L2_STD_ALL, +}; + +static const struct v4l2_file_operations radio_fops = { + .owner = THIS_MODULE, + .open = cx231xx_v4l2_open, + .release = cx231xx_v4l2_close, + .poll = v4l2_ctrl_poll, + .unlocked_ioctl = video_ioctl2, +}; + +static const struct v4l2_ioctl_ops radio_ioctl_ops = { + .vidioc_querycap = cx231xx_querycap, + .vidioc_g_tuner = radio_g_tuner, + .vidioc_s_tuner = radio_s_tuner, + .vidioc_g_frequency = cx231xx_g_frequency, + .vidioc_s_frequency = cx231xx_s_frequency, +#ifdef CONFIG_VIDEO_ADV_DEBUG + .vidioc_g_chip_info = cx231xx_g_chip_info, + .vidioc_g_register = cx231xx_g_register, + .vidioc_s_register = cx231xx_s_register, +#endif + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +static struct video_device cx231xx_radio_template = { + .name = "cx231xx-radio", + .fops = &radio_fops, + .ioctl_ops = &radio_ioctl_ops, +}; + +/******************************** usb interface ******************************/ + +static void cx231xx_vdev_init(struct cx231xx *dev, + struct video_device *vfd, + const struct video_device *template, + const char *type_name) +{ + *vfd = *template; + vfd->v4l2_dev = &dev->v4l2_dev; + vfd->release = video_device_release_empty; + vfd->lock = &dev->lock; + + snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name); + + video_set_drvdata(vfd, dev); + if (dev->tuner_type == TUNER_ABSENT) { + v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY); + v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY); + v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER); + v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER); + } +} + +int cx231xx_register_analog_devices(struct cx231xx *dev) +{ + int ret; + + dev_info(dev->dev, "v4l2 driver version %s\n", CX231XX_VERSION); + + /* set default norm */ + dev->norm = V4L2_STD_PAL; + dev->width = norm_maxw(dev); + dev->height = norm_maxh(dev); + dev->interlaced = 0; + + /* Analog specific initialization */ + dev->format = &format[0]; + + /* Set the initial input */ + video_mux(dev, dev->video_input); + + call_all(dev, video, s_std, dev->norm); + + v4l2_ctrl_handler_init(&dev->ctrl_handler, 10); + v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 5); + + if (dev->sd_cx25840) { + v4l2_ctrl_add_handler(&dev->ctrl_handler, + dev->sd_cx25840->ctrl_handler, NULL); + v4l2_ctrl_add_handler(&dev->radio_ctrl_handler, + dev->sd_cx25840->ctrl_handler, + v4l2_ctrl_radio_filter); + } + + if (dev->ctrl_handler.error) + return dev->ctrl_handler.error; + if (dev->radio_ctrl_handler.error) + return dev->radio_ctrl_handler.error; + + /* enable vbi capturing */ + /* write code here... */ + + /* allocate and fill video video_device struct */ + cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video"); +#if defined(CONFIG_MEDIA_CONTROLLER) + dev->video_pad.flags = MEDIA_PAD_FL_SINK; + ret = media_entity_init(&dev->vdev.entity, 1, &dev->video_pad, 0); + if (ret < 0) + dev_err(dev->dev, "failed to initialize video media entity!\n"); +#endif + dev->vdev.ctrl_handler = &dev->ctrl_handler; + /* register v4l2 video video_device */ + ret = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, + video_nr[dev->devno]); + if (ret) { + dev_err(dev->dev, + "unable to register video device (error=%i).\n", + ret); + return ret; + } + + dev_info(dev->dev, "Registered video device %s [v4l2]\n", + video_device_node_name(&dev->vdev)); + + /* Initialize VBI template */ + cx231xx_vbi_template = cx231xx_video_template; + strcpy(cx231xx_vbi_template.name, "cx231xx-vbi"); + + /* Allocate and fill vbi video_device struct */ + cx231xx_vdev_init(dev, &dev->vbi_dev, &cx231xx_vbi_template, "vbi"); + +#if defined(CONFIG_MEDIA_CONTROLLER) + dev->vbi_pad.flags = MEDIA_PAD_FL_SINK; + ret = media_entity_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad, 0); + if (ret < 0) + dev_err(dev->dev, "failed to initialize vbi media entity!\n"); +#endif + dev->vbi_dev.ctrl_handler = &dev->ctrl_handler; + /* register v4l2 vbi video_device */ + ret = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI, + vbi_nr[dev->devno]); + if (ret < 0) { + dev_err(dev->dev, "unable to register vbi device\n"); + return ret; + } + + dev_info(dev->dev, "Registered VBI device %s\n", + video_device_node_name(&dev->vbi_dev)); + + if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) { + cx231xx_vdev_init(dev, &dev->radio_dev, + &cx231xx_radio_template, "radio"); + dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler; + ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO, + radio_nr[dev->devno]); + if (ret < 0) { + dev_err(dev->dev, + "can't register radio device\n"); + return ret; + } + dev_info(dev->dev, "Registered radio device as %s\n", + video_device_node_name(&dev->radio_dev)); + } + + return 0; +} |