/* ivtv driver internal defines and structures Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com> Copyright (C) 2004 Chris Kennedy <c@groovy.org> Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl>
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef IVTV_DRIVER_H #define IVTV_DRIVER_H
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
/* Internal header for ivtv project: * Driver for the cx23415/6 chip. * Author: Kevin Thayer (nufan_wfk at yahoo.com) * License: GPL * * ----- * MPG600/MPG160 support by T.Adachi <tadachi@tadachi-net.com> * and Takeru KOMORIYA<komoriya@paken.org> * * AVerMedia M179 GPIO info by Chris Pinkham <cpinkham@bc2va.org> * using information provided by Jiun-Kuei Jung @ AVerMedia.
*/
/* Memory layout */ #define IVTV_ENCODER_OFFSET 0x00000000 #define IVTV_ENCODER_SIZE 0x00800000 /* Total size is 0x01000000, but only first half is used */ #define IVTV_DECODER_OFFSET 0x01000000 #define IVTV_DECODER_SIZE 0x00800000 /* Total size is 0x01000000, but only first half is used */ #define IVTV_REG_OFFSET 0x02000000 #define IVTV_REG_SIZE 0x00010000
/* Maximum ivtv driver instances. Some people have a huge number of
capture cards, so set this to a high value. */ #define IVTV_MAX_CARDS 32
/* Default I2C SCL period in microseconds */ #define IVTV_DEFAULT_I2C_CLOCK_PERIOD 20
struct ivtv_options { int kilobytes[IVTV_MAX_STREAMS]; /* size in kilobytes of each stream */ int cardtype; /* force card type on load */ int tuner; /* set tuner on load */ int radio; /* enable/disable radio */ int newi2c; /* new I2C algorithm */ int i2c_clock_period; /* period of SCL for I2C bus */
};
struct ivtv_api_cache { unsignedlong last_jiffies; /* when last command was issued */
u32 data[CX2341X_MBOX_MAX_DATA]; /* last sent api data */
};
struct ivtv_mailbox_data { volatilestruct ivtv_mailbox __iomem *mbox; /* Bits 0-2 are for the encoder mailboxes, 0-1 are for the decoder mailboxes.
If the bit is set, then the corresponding mailbox is in use by the driver. */ unsignedlong busy;
u8 max_mbox;
};
/* per-buffer bit flags */ #define IVTV_F_B_NEED_BUF_SWAP (1 << 0) /* this buffer should be byte swapped */
/* per-stream, s_flags */ #define IVTV_F_S_DMA_PENDING 0 /* this stream has pending DMA */ #define IVTV_F_S_DMA_HAS_VBI 1 /* the current DMA request also requests VBI data */ #define IVTV_F_S_NEEDS_DATA 2 /* this decoding stream needs more data */
#define IVTV_F_S_CLAIMED 3 /* this stream is claimed */ #define IVTV_F_S_STREAMING 4 /* the fw is decoding/encoding this stream */ #define IVTV_F_S_INTERNAL_USE 5 /* this stream is used internally (sliced VBI processing) */ #define IVTV_F_S_PASSTHROUGH 6 /* this stream is in passthrough mode */ #define IVTV_F_S_STREAMOFF 7 /* signal end of stream EOS */ #define IVTV_F_S_APPL_IO 8 /* this stream is used read/written by an application */
#define IVTV_F_S_PIO_PENDING 9 /* this stream has pending PIO */ #define IVTV_F_S_PIO_HAS_VBI 1 /* the current PIO request also requests VBI data */
/* per-ivtv, i_flags */ #define IVTV_F_I_DMA 0 /* DMA in progress */ #define IVTV_F_I_UDMA 1 /* UDMA in progress */ #define IVTV_F_I_UDMA_PENDING 2 /* UDMA pending */ #define IVTV_F_I_SPEED_CHANGE 3 /* a speed change is in progress */ #define IVTV_F_I_EOS 4 /* end of encoder stream reached */ #define IVTV_F_I_RADIO_USER 5 /* the radio tuner is selected */ #define IVTV_F_I_DIG_RST 6 /* reset digitizer */ #define IVTV_F_I_DEC_YUV 7 /* YUV instead of MPG is being decoded */ #define IVTV_F_I_UPDATE_CC 9 /* CC should be updated */ #define IVTV_F_I_UPDATE_WSS 10 /* WSS should be updated */ #define IVTV_F_I_UPDATE_VPS 11 /* VPS should be updated */ #define IVTV_F_I_DECODING_YUV 12 /* this stream is YUV frame decoding */ #define IVTV_F_I_ENC_PAUSED 13 /* the encoder is paused */ #define IVTV_F_I_VALID_DEC_TIMINGS 14 /* last_dec_timing is valid */ #define IVTV_F_I_HAVE_WORK 15 /* used in the interrupt handler: there is work to be done */ #define IVTV_F_I_WORK_HANDLER_VBI 16 /* there is work to be done for VBI */ #define IVTV_F_I_WORK_HANDLER_YUV 17 /* there is work to be done for YUV */ #define IVTV_F_I_WORK_HANDLER_PIO 18 /* there is work to be done for PIO */ #define IVTV_F_I_PIO 19 /* PIO in progress */ #define IVTV_F_I_DEC_PAUSED 20 /* the decoder is paused */ #define IVTV_F_I_INITED 21 /* set after first open */ #define IVTV_F_I_FAILED 22 /* set if first open failed */ #define IVTV_F_I_WORK_HANDLER_PCM 23 /* there is work to be done for PCM */
struct ivtv_queue { struct list_head list; /* the list of buffers in this queue */
u32 buffers; /* number of buffers in this queue */
u32 length; /* total number of bytes of available buffer space */
u32 bytesused; /* total number of bytes used in this queue */
};
struct ivtv_stream { /* These first four fields are always set, even if the stream
is not actually created. */ struct video_device vdev; /* vdev.v4l2_dev is NULL if there is no device */ struct ivtv *itv; /* for ease of use */ constchar *name; /* name of the stream */ int type; /* stream type */
struct ivtv_open_id *id; /* pointer to the streaming ivtv_open_id */
spinlock_t qlock; /* locks access to the queues */ unsignedlong s_flags; /* status flags, see above */ int dma; /* can be PCI_DMA_TODEVICE, PCI_DMA_FROMDEVICE or PCI_DMA_NONE */
u32 pending_offset;
u32 pending_backup;
u64 pending_pts;
u32 dma_offset;
u32 dma_backup;
u64 dma_pts;
int subtype;
wait_queue_head_t waitq;
u32 dma_last_offset;
/* DMA xfer counter, buffers belonging to the same DMA
xfer will have the same dma_xfer_cnt. */
u16 dma_xfer_cnt;
/* Base Dev SG Array for cx23415/6 */ struct ivtv_sg_host_element *sg_pending; struct ivtv_sg_host_element *sg_processing; struct ivtv_sg_element *sg_dma;
dma_addr_t sg_handle; int sg_pending_size; int sg_processing_size; int sg_processed;
/* SG List of Buffers */ struct scatterlist *SGlist;
};
struct ivtv_open_id { struct v4l2_fh fh; int type; /* stream type */ int yuv_frames; /* 1: started OUT_UDMA_YUV output mode */ struct ivtv *itv;
};
struct vbi_info { /* VBI general data, does not change during streaming */
u32 raw_decoder_line_size; /* raw VBI line size from digitizer */
u8 raw_decoder_sav_odd_field; /* raw VBI Start Active Video digitizer code of odd field */
u8 raw_decoder_sav_even_field; /* raw VBI Start Active Video digitizer code of even field */
u32 sliced_decoder_line_size; /* sliced VBI line size from digitizer */
u8 sliced_decoder_sav_odd_field; /* sliced VBI Start Active Video digitizer code of odd field */
u8 sliced_decoder_sav_even_field; /* sliced VBI Start Active Video digitizer code of even field */
u32 start[2]; /* start of first VBI line in the odd/even fields */
u32 count; /* number of VBI lines per field */
u32 raw_size; /* size of raw VBI line from the digitizer */
u32 sliced_size; /* size of sliced VBI line from the digitizer */
u32 dec_start; /* start in decoder memory of VBI re-insertion buffers */
u32 enc_start; /* start in encoder memory of VBI capture buffers */
u32 enc_size; /* size of VBI capture area */ int fpi; /* number of VBI frames per interrupt */
struct v4l2_format in; /* current VBI capture format */ struct v4l2_sliced_vbi_format *sliced_in; /* convenience pointer to sliced struct in vbi.in union */ int insert_mpeg; /* if non-zero, then embed VBI data in MPEG stream */
/* Raw VBI compatibility hack */
u32 frame; /* frame counter hack needed for backwards compatibility
of old VBI software */
/* Sliced VBI output data */
struct vbi_cc cc_payload[256]; /* sliced VBI CC payload array: it is an array to prevent dropping CC data if they couldn't be
processed fast enough */ int cc_payload_idx; /* index in cc_payload */
u8 cc_missing_cnt; /* counts number of frames without CC for passthrough mode */ int wss_payload; /* sliced VBI WSS payload */
u8 wss_missing_cnt; /* counts number of frames without WSS for passthrough mode */ struct vbi_vps vps_payload; /* sliced VBI VPS payload */
/* Buffer for VBI data inserted into MPEG stream. The first byte is a dummy byte that's never used. The next 16 bytes contain the MPEG header for the VBI data, the remainder is the actual VBI data. The max size accepted by the MPEG VBI reinsertion turns out to be 1552 bytes, which happens to be 4 + (1 + 42) * (2 * 18) bytes, where 4 is a four byte header, 42 is the max sliced VBI payload, 1 is a single line header byte and 2 * 18 is the number of VBI lines per frame.
However, it seems that the data must be 1K aligned, so we have to pad the data until the 1 or 2 K boundary.
This pointer array will allocate 2049 bytes to store each VBI frame. */
u8 *sliced_mpeg_data[IVTV_VBI_FRAMES];
u32 sliced_mpeg_size[IVTV_VBI_FRAMES]; struct ivtv_buffer sliced_mpeg_buf; /* temporary buffer holding data from sliced_mpeg_data */
u32 inserted_frame; /* index in sliced_mpeg_size of next sliced data
to be inserted in the MPEG stream */
};
/* forward declaration of struct defined in ivtv-cards.h */ struct ivtv_card;
/* Struct to hold info about ivtv cards */ struct ivtv { /* General fixed card data */ struct pci_dev *pdev; /* PCI device */ conststruct ivtv_card *card; /* card information */ constchar *card_name; /* full name of the card */ conststruct ivtv_card_tuner_i2c *card_i2c; /* i2c addresses to probe for tuner */
u8 has_cx23415; /* 1 if it is a cx23415 based card, 0 for cx23416 */
u8 pvr150_workaround; /* 1 if the cx25840 needs to workaround a PVR150 bug */
u8 nof_inputs; /* number of video inputs */
u8 nof_audio_inputs; /* number of audio inputs */
u32 v4l2_cap; /* V4L2 capabilities of card */
u32 hw_flags; /* hardware description of the board */
v4l2_std_id tuner_std; /* the norm of the card's tuner (fixed) */ struct v4l2_subdev *sd_video; /* controlling video decoder subdev */ bool sd_video_is_streaming; /* is video already streaming? */ struct v4l2_subdev *sd_audio; /* controlling audio subdev */ struct v4l2_subdev *sd_muxer; /* controlling audio muxer subdev */
resource_size_t base_addr; /* PCI resource base address */ volatilevoid __iomem *enc_mem; /* pointer to mapped encoder memory */ volatilevoid __iomem *dec_mem; /* pointer to mapped decoder memory */ volatilevoid __iomem *reg_mem; /* pointer to mapped registers */ struct ivtv_options options; /* user options */
/* High-level state info */ unsignedlong i_flags; /* global ivtv flags */
u8 is_50hz; /* 1 if the current capture standard is 50 Hz */
u8 is_60hz /* 1 if the current capture standard is 60 Hz */;
u8 is_out_50hz /* 1 if the current TV output standard is 50 Hz */;
u8 is_out_60hz /* 1 if the current TV output standard is 60 Hz */; int output_mode; /* decoder output mode: NONE, MPG, YUV, UDMA YUV, passthrough */
u32 audio_input; /* current audio input */
u32 active_input; /* current video input */
u32 active_output; /* current video output */
v4l2_std_id std; /* current capture TV standard */
v4l2_std_id std_out; /* current TV output standard */
u8 audio_stereo_mode; /* decoder setting how to handle stereo MPEG audio */
u8 audio_bilingual_mode; /* decoder setting how to handle bilingual MPEG audio */
/* Locking */
spinlock_t lock; /* lock access to this struct */ struct mutex serialize_lock; /* mutex used to serialize open/close/start/stop/ioctl operations */
/* Streams */ int stream_buf_size[IVTV_MAX_STREAMS]; /* stream buffer size */ struct ivtv_stream streams[IVTV_MAX_STREAMS]; /* stream data */
atomic_t capturing; /* count number of active capture streams */
atomic_t decoding; /* count number of active decoding streams */
/* Used for ivtv-alsa module loading */ struct work_struct request_module_wk;
/* Interrupts & DMA */
u32 irqmask; /* active interrupts */
u32 irq_rr_idx; /* round-robin stream index */ struct kthread_worker irq_worker; /* kthread worker for PIO/YUV/VBI actions */ struct task_struct *irq_worker_task; /* task for irq_worker */ struct kthread_work irq_work; /* kthread work entry */
spinlock_t dma_reg_lock; /* lock access to DMA engine registers */ int cur_dma_stream; /* index of current stream doing DMA (-1 if none) */ int cur_pio_stream; /* index of current stream doing PIO (-1 if none) */
u32 dma_data_req_offset; /* store offset in decoder memory of current DMA request */
u32 dma_data_req_size; /* store size of current DMA request */ int dma_retries; /* current DMA retry attempt */ struct ivtv_user_dma udma; /* user based DMA for OSD */ struct timer_list dma_timer; /* timer used to catch unfinished DMAs */
u32 last_vsync_field; /* last seen vsync field */
wait_queue_head_t dma_waitq; /* wake up when the current DMA is finished */
wait_queue_head_t eos_waitq; /* wake up when EOS arrives */
wait_queue_head_t event_waitq; /* wake up when the next decoder event arrives */
wait_queue_head_t vsync_waitq; /* wake up when the next decoder vsync arrives */
/* I2C */ struct i2c_adapter i2c_adap; struct i2c_algo_bit_data i2c_algo; struct i2c_client i2c_client; int i2c_state; /* i2c bit state */ struct mutex i2c_bus_lock; /* lock i2c bus */
struct IR_i2c_init_data ir_i2c_init_data;
/* Program Index information */
u32 pgm_info_offset; /* start of pgm info in encoder memory */
u32 pgm_info_num; /* number of elements in the pgm cyclic buffer in encoder memory */
u32 pgm_info_write_idx; /* last index written by the card that was transferred to pgm_info[] */
u32 pgm_info_read_idx; /* last index in pgm_info read by the application */ struct v4l2_enc_idx_entry pgm_info[IVTV_MAX_PGM_INDEX]; /* filled from the pgm cyclic buffer on the card */
/* Miscellaneous */
u32 open_id; /* incremented each time an open occurs, is >= 1 */ int search_pack_header; /* 1 if ivtv_copy_buf_to_user() is scanning for a pack header (0xba) */ int speed; /* current playback speed setting */
u8 speed_mute_audio; /* 1 if audio should be muted when fast forward */
u64 mpg_data_received; /* number of bytes received from the MPEG stream */
u64 vbi_data_inserted; /* number of VBI bytes inserted into the MPEG stream */
u32 last_dec_timing[3]; /* cache last retrieved pts/scr/frame values */ unsignedlong dualwatch_jiffies;/* jiffies value of the previous dualwatch check */
u32 dualwatch_stereo_mode; /* current detected dualwatch stereo mode */
/* VBI state info */ struct vbi_info vbi; /* VBI-specific data */
/* OSD support */ unsignedlong osd_video_pbase; int osd_global_alpha_state; /* 1 = global alpha is on */ int osd_local_alpha_state; /* 1 = local alpha is on */ int osd_chroma_key_state; /* 1 = chroma-keying is on */
u8 osd_global_alpha; /* current global alpha */
u32 osd_chroma_key; /* current chroma key */ struct v4l2_rect osd_rect; /* current OSD position and size */ struct v4l2_rect main_rect; /* current Main window position and size */ struct osd_info *osd_info; /* ivtvfb private OSD info */ void (*ivtvfb_restore)(struct ivtv *itv); /* Used for a warm start */
};
/* First-open initialization: load firmware, init cx25840, etc. */ int ivtv_init_on_first_open(struct ivtv *itv);
/* Test if the current VBI mode is raw (1) or sliced (0) */ staticinlineint ivtv_raw_vbi(conststruct ivtv *itv)
{ return itv->vbi.in.type == V4L2_BUF_TYPE_VBI_CAPTURE;
}
/* This is a PCI post thing, where if the pci register is not read, then the write doesn't always take effect right away. By reading back the register any pending PCI writes will be performed (in order), and so you can be sure that the writes are guaranteed to be done.
Rarely needed, only in some timing sensitive cases. Apparently if this is not done some motherboards seem to kill the firmware and get into the broken state until computer is
rebooted. */ #define write_sync(val, reg) \ do { writel(val, reg); readl(reg); } while (0)
/* Call the specified callback for all subdevs matching hw (if 0, then
match them all). Ignore any errors. */ #define ivtv_call_hw(itv, hw, o, f, args...) \
v4l2_device_mask_call_all(&(itv)->v4l2_dev, hw, o, f, ##args)
#define ivtv_call_all(itv, o, f, args...) ivtv_call_hw(itv, 0, o, f , ##args)
/* Call the specified callback for all subdevs matching hw (if 0, then match them all). If the callback returns an error other than 0 or
-ENOIOCTLCMD, then return with that error code. */ #define ivtv_call_hw_err(itv, hw, o, f, args...) \
v4l2_device_mask_call_until_err(&(itv)->v4l2_dev, hw, o, f, ##args)
#define ivtv_call_all_err(itv, o, f, args...) ivtv_call_hw_err(itv, 0, o, f , ##args)
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