From b285192a43f0432d82c2c10974204e78af0da596 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 14 Aug 2012 12:13:30 -0300 Subject: [media] rename most media/video pci drivers to media/pci Rename all PCI drivers with their own directory under drivers/media/video into drivers/media/pci and update the building system. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/pci/ivtv/ivtv-driver.h | 839 +++++++++++++++++++++++++++++++++++ 1 file changed, 839 insertions(+) create mode 100644 drivers/media/pci/ivtv/ivtv-driver.h (limited to 'drivers/media/pci/ivtv/ivtv-driver.h') diff --git a/drivers/media/pci/ivtv/ivtv-driver.h b/drivers/media/pci/ivtv/ivtv-driver.h new file mode 100644 index 000000000000..a7e00f8938f8 --- /dev/null +++ b/drivers/media/pci/ivtv/ivtv-driver.h @@ -0,0 +1,839 @@ +/* + ivtv driver internal defines and structures + Copyright (C) 2003-2004 Kevin Thayer + Copyright (C) 2004 Chris Kennedy + Copyright (C) 2005-2007 Hans Verkuil + + 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 + +/* Internal header for ivtv project: + * Driver for the cx23415/6 chip. + * Author: Kevin Thayer (nufan_wfk at yahoo.com) + * License: GPL + * http://www.ivtvdriver.org + * + * ----- + * MPG600/MPG160 support by T.Adachi + * and Takeru KOMORIYA + * + * AVerMedia M179 GPIO info by Chris Pinkham + * using information provided by Jiun-Kuei Jung @ AVerMedia. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +/* 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 + +#define IVTV_ENC_STREAM_TYPE_MPG 0 +#define IVTV_ENC_STREAM_TYPE_YUV 1 +#define IVTV_ENC_STREAM_TYPE_VBI 2 +#define IVTV_ENC_STREAM_TYPE_PCM 3 +#define IVTV_ENC_STREAM_TYPE_RAD 4 +#define IVTV_DEC_STREAM_TYPE_MPG 5 +#define IVTV_DEC_STREAM_TYPE_VBI 6 +#define IVTV_DEC_STREAM_TYPE_VOUT 7 +#define IVTV_DEC_STREAM_TYPE_YUV 8 +#define IVTV_MAX_STREAMS 9 + +#define IVTV_DMA_SG_OSD_ENT (2883584/PAGE_SIZE) /* sg entities */ + +/* DMA Registers */ +#define IVTV_REG_DMAXFER (0x0000) +#define IVTV_REG_DMASTATUS (0x0004) +#define IVTV_REG_DECDMAADDR (0x0008) +#define IVTV_REG_ENCDMAADDR (0x000c) +#define IVTV_REG_DMACONTROL (0x0010) +#define IVTV_REG_IRQSTATUS (0x0040) +#define IVTV_REG_IRQMASK (0x0048) + +/* Setup Registers */ +#define IVTV_REG_ENC_SDRAM_REFRESH (0x07F8) +#define IVTV_REG_ENC_SDRAM_PRECHARGE (0x07FC) +#define IVTV_REG_DEC_SDRAM_REFRESH (0x08F8) +#define IVTV_REG_DEC_SDRAM_PRECHARGE (0x08FC) +#define IVTV_REG_VDM (0x2800) +#define IVTV_REG_AO (0x2D00) +#define IVTV_REG_BYTEFLUSH (0x2D24) +#define IVTV_REG_SPU (0x9050) +#define IVTV_REG_HW_BLOCKS (0x9054) +#define IVTV_REG_VPU (0x9058) +#define IVTV_REG_APU (0xA064) + +/* Other registers */ +#define IVTV_REG_DEC_LINE_FIELD (0x28C0) + +/* debugging */ +extern int ivtv_debug; +#ifdef CONFIG_VIDEO_ADV_DEBUG +extern int ivtv_fw_debug; +#endif + +#define IVTV_DBGFLG_WARN (1 << 0) +#define IVTV_DBGFLG_INFO (1 << 1) +#define IVTV_DBGFLG_MB (1 << 2) +#define IVTV_DBGFLG_IOCTL (1 << 3) +#define IVTV_DBGFLG_FILE (1 << 4) +#define IVTV_DBGFLG_DMA (1 << 5) +#define IVTV_DBGFLG_IRQ (1 << 6) +#define IVTV_DBGFLG_DEC (1 << 7) +#define IVTV_DBGFLG_YUV (1 << 8) +#define IVTV_DBGFLG_I2C (1 << 9) +/* Flag to turn on high volume debugging */ +#define IVTV_DBGFLG_HIGHVOL (1 << 10) + +#define IVTV_DEBUG(x, type, fmt, args...) \ + do { \ + if ((x) & ivtv_debug) \ + v4l2_info(&itv->v4l2_dev, " " type ": " fmt , ##args); \ + } while (0) +#define IVTV_DEBUG_WARN(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_WARN, "warn", fmt , ## args) +#define IVTV_DEBUG_INFO(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_INFO, "info", fmt , ## args) +#define IVTV_DEBUG_MB(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_MB, "mb", fmt , ## args) +#define IVTV_DEBUG_DMA(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_DMA, "dma", fmt , ## args) +#define IVTV_DEBUG_IOCTL(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_IOCTL, "ioctl", fmt , ## args) +#define IVTV_DEBUG_FILE(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_FILE, "file", fmt , ## args) +#define IVTV_DEBUG_I2C(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_I2C, "i2c", fmt , ## args) +#define IVTV_DEBUG_IRQ(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_IRQ, "irq", fmt , ## args) +#define IVTV_DEBUG_DEC(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_DEC, "dec", fmt , ## args) +#define IVTV_DEBUG_YUV(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_YUV, "yuv", fmt , ## args) + +#define IVTV_DEBUG_HIGH_VOL(x, type, fmt, args...) \ + do { \ + if (((x) & ivtv_debug) && (ivtv_debug & IVTV_DBGFLG_HIGHVOL)) \ + v4l2_info(&itv->v4l2_dev, " " type ": " fmt , ##args); \ + } while (0) +#define IVTV_DEBUG_HI_WARN(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_WARN, "warn", fmt , ## args) +#define IVTV_DEBUG_HI_INFO(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_INFO, "info", fmt , ## args) +#define IVTV_DEBUG_HI_MB(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_MB, "mb", fmt , ## args) +#define IVTV_DEBUG_HI_DMA(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_DMA, "dma", fmt , ## args) +#define IVTV_DEBUG_HI_IOCTL(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_IOCTL, "ioctl", fmt , ## args) +#define IVTV_DEBUG_HI_FILE(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_FILE, "file", fmt , ## args) +#define IVTV_DEBUG_HI_I2C(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_I2C, "i2c", fmt , ## args) +#define IVTV_DEBUG_HI_IRQ(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_IRQ, "irq", fmt , ## args) +#define IVTV_DEBUG_HI_DEC(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_DEC, "dec", fmt , ## args) +#define IVTV_DEBUG_HI_YUV(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_YUV, "yuv", fmt , ## args) + +/* Standard kernel messages */ +#define IVTV_ERR(fmt, args...) v4l2_err(&itv->v4l2_dev, fmt , ## args) +#define IVTV_WARN(fmt, args...) v4l2_warn(&itv->v4l2_dev, fmt , ## args) +#define IVTV_INFO(fmt, args...) v4l2_info(&itv->v4l2_dev, fmt , ## args) + +/* output modes (cx23415 only) */ +#define OUT_NONE 0 +#define OUT_MPG 1 +#define OUT_YUV 2 +#define OUT_UDMA_YUV 3 +#define OUT_PASSTHROUGH 4 + +#define IVTV_MAX_PGM_INDEX (400) + +/* 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 */ +}; + +/* ivtv-specific mailbox template */ +struct ivtv_mailbox { + u32 flags; + u32 cmd; + u32 retval; + u32 timeout; + u32 data[CX2341X_MBOX_MAX_DATA]; +}; + +struct ivtv_api_cache { + unsigned long last_jiffies; /* when last command was issued */ + u32 data[CX2341X_MBOX_MAX_DATA]; /* last sent api data */ +}; + +struct ivtv_mailbox_data { + volatile struct 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. */ + unsigned long 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 */ + +/* Event notifications */ +#define IVTV_F_I_EV_DEC_STOPPED 28 /* decoder stopped event */ +#define IVTV_F_I_EV_VSYNC 29 /* VSYNC event */ +#define IVTV_F_I_EV_VSYNC_FIELD 30 /* VSYNC event field (0 = first, 1 = second field) */ +#define IVTV_F_I_EV_VSYNC_ENABLED 31 /* VSYNC event enabled */ + +/* Scatter-Gather array element, used in DMA transfers */ +struct ivtv_sg_element { + __le32 src; + __le32 dst; + __le32 size; +}; + +struct ivtv_sg_host_element { + u32 src; + u32 dst; + u32 size; +}; + +struct ivtv_user_dma { + struct mutex lock; + int page_count; + struct page *map[IVTV_DMA_SG_OSD_ENT]; + /* Needed when dealing with highmem userspace buffers */ + struct page *bouncemap[IVTV_DMA_SG_OSD_ENT]; + + /* Base Dev SG Array for cx23415/6 */ + struct ivtv_sg_element SGarray[IVTV_DMA_SG_OSD_ENT]; + dma_addr_t SG_handle; + int SG_length; + + /* SG List of Buffers */ + struct scatterlist SGlist[IVTV_DMA_SG_OSD_ENT]; +}; + +struct ivtv_dma_page_info { + unsigned long uaddr; + unsigned long first; + unsigned long last; + unsigned int offset; + unsigned int tail; + int page_count; +}; + +struct ivtv_buffer { + struct list_head list; + dma_addr_t dma_handle; + unsigned short b_flags; + unsigned short dma_xfer_cnt; + char *buf; + u32 bytesused; + u32 readpos; +}; + +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; /* forward reference */ + +struct ivtv_stream { + /* These first four fields are always set, even if the stream + is not actually created. */ + struct video_device *vdev; /* NULL when stream not created */ + struct ivtv *itv; /* for ease of use */ + const char *name; /* name of the stream */ + int type; /* stream type */ + u32 caps; /* V4L2 capabilities */ + + struct v4l2_fh *fh; /* pointer to the streaming filehandle */ + spinlock_t qlock; /* locks access to the queues */ + unsigned long 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; + + /* Buffer Stats */ + u32 buffers; + u32 buf_size; + u32 buffers_stolen; + + /* Buffer Queues */ + struct ivtv_queue q_free; /* free buffers */ + struct ivtv_queue q_full; /* full buffers */ + struct ivtv_queue q_io; /* waiting for I/O */ + struct ivtv_queue q_dma; /* waiting for DMA */ + struct ivtv_queue q_predma; /* waiting for DMA */ + + /* 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; +}; + +static inline struct ivtv_open_id *fh2id(struct v4l2_fh *fh) +{ + return container_of(fh, struct ivtv_open_id, fh); +} + +struct yuv_frame_info +{ + u32 update; + s32 src_x; + s32 src_y; + u32 src_w; + u32 src_h; + s32 dst_x; + s32 dst_y; + u32 dst_w; + u32 dst_h; + s32 pan_x; + s32 pan_y; + u32 vis_w; + u32 vis_h; + u32 interlaced_y; + u32 interlaced_uv; + s32 tru_x; + u32 tru_w; + u32 tru_h; + u32 offset_y; + s32 lace_mode; + u32 sync_field; + u32 delay; + u32 interlaced; +}; + +#define IVTV_YUV_MODE_INTERLACED 0x00 +#define IVTV_YUV_MODE_PROGRESSIVE 0x01 +#define IVTV_YUV_MODE_AUTO 0x02 +#define IVTV_YUV_MODE_MASK 0x03 + +#define IVTV_YUV_SYNC_EVEN 0x00 +#define IVTV_YUV_SYNC_ODD 0x04 +#define IVTV_YUV_SYNC_MASK 0x04 + +#define IVTV_YUV_BUFFERS 8 + +struct yuv_playback_info +{ + u32 reg_2834; + u32 reg_2838; + u32 reg_283c; + u32 reg_2840; + u32 reg_2844; + u32 reg_2848; + u32 reg_2854; + u32 reg_285c; + u32 reg_2864; + + u32 reg_2870; + u32 reg_2874; + u32 reg_2890; + u32 reg_2898; + u32 reg_289c; + + u32 reg_2918; + u32 reg_291c; + u32 reg_2920; + u32 reg_2924; + u32 reg_2928; + u32 reg_292c; + u32 reg_2930; + + u32 reg_2934; + + u32 reg_2938; + u32 reg_293c; + u32 reg_2940; + u32 reg_2944; + u32 reg_2948; + u32 reg_294c; + u32 reg_2950; + u32 reg_2954; + u32 reg_2958; + u32 reg_295c; + u32 reg_2960; + u32 reg_2964; + u32 reg_2968; + u32 reg_296c; + + u32 reg_2970; + + int v_filter_1; + int v_filter_2; + int h_filter; + + u8 track_osd; /* Should yuv output track the OSD size & position */ + + u32 osd_x_offset; + u32 osd_y_offset; + + u32 osd_x_pan; + u32 osd_y_pan; + + u32 osd_vis_w; + u32 osd_vis_h; + + u32 osd_full_w; + u32 osd_full_h; + + int decode_height; + + int lace_mode; + int lace_threshold; + int lace_sync_field; + + atomic_t next_dma_frame; + atomic_t next_fill_frame; + + u32 yuv_forced_update; + int update_frame; + + u8 fields_lapsed; /* Counter used when delaying a frame */ + + struct yuv_frame_info new_frame_info[IVTV_YUV_BUFFERS]; + struct yuv_frame_info old_frame_info; + struct yuv_frame_info old_frame_info_args; + + void *blanking_ptr; + dma_addr_t blanking_dmaptr; + + int stream_size; + + u8 draw_frame; /* PVR350 buffer to draw into */ + u8 max_frames_buffered; /* Maximum number of frames to buffer */ + + struct v4l2_rect main_rect; + u32 v4l2_src_w; + u32 v4l2_src_h; + + u8 running; /* Have any frames been displayed */ +}; + +#define IVTV_VBI_FRAMES 32 + +/* VBI data */ +struct vbi_cc { + u8 odd[2]; /* two-byte payload of odd field */ + u8 even[2]; /* two-byte payload of even field */; +}; + +struct vbi_vps { + u8 data[5]; /* five-byte VPS payload */ +}; + +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 */ + + /* Sliced VBI capture data */ + + struct v4l2_sliced_vbi_data sliced_data[36]; /* sliced VBI storage for VBI encoder stream */ + struct v4l2_sliced_vbi_data sliced_dec_data[36];/* sliced VBI storage for VBI decoder stream */ + + /* VBI Embedding data */ + + /* 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 */ + const struct ivtv_card *card; /* card information */ + const char *card_name; /* full name of the card */ + const struct 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 */ + 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 */ + volatile void __iomem *enc_mem; /* pointer to mapped encoder memory */ + volatile void __iomem *dec_mem; /* pointer to mapped decoder memory */ + volatile void __iomem *reg_mem; /* pointer to mapped registers */ + struct ivtv_options options; /* user options */ + + struct v4l2_device v4l2_dev; + struct cx2341x_handler cxhdl; + struct { + /* PTS/Frame count control cluster */ + struct v4l2_ctrl *ctrl_pts; + struct v4l2_ctrl *ctrl_frame; + }; + struct { + /* Audio Playback control cluster */ + struct v4l2_ctrl *ctrl_audio_playback; + struct v4l2_ctrl *ctrl_audio_multilingual_playback; + }; + struct v4l2_ctrl_handler hdl_gpio; + struct v4l2_subdev sd_gpio; /* GPIO sub-device */ + u16 instance; + + /* High-level state info */ + unsigned long 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 */ + + + /* 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 */ + + + /* Mailbox */ + struct ivtv_mailbox_data enc_mbox; /* encoder mailboxes */ + struct ivtv_mailbox_data dec_mbox; /* decoder mailboxes */ + struct ivtv_api_cache api_cache[256]; /* cached API commands */ + + + /* 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 */ + unsigned long 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 */ + + + /* YUV playback */ + struct yuv_playback_info yuv_info; /* YUV playback data */ + + + /* OSD support */ + unsigned long 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 */ +}; + +static inline struct ivtv *to_ivtv(struct v4l2_device *v4l2_dev) +{ + return container_of(v4l2_dev, struct ivtv, v4l2_dev); +} + +/* Globals */ +extern int ivtv_first_minor; + +/*==============Prototypes==================*/ + +/* Hardware/IRQ */ +void ivtv_set_irq_mask(struct ivtv *itv, u32 mask); +void ivtv_clear_irq_mask(struct ivtv *itv, u32 mask); + +/* try to set output mode, return current mode. */ +int ivtv_set_output_mode(struct ivtv *itv, int mode); + +/* return current output stream based on current mode */ +struct ivtv_stream *ivtv_get_output_stream(struct ivtv *itv); + +/* Return non-zero if a signal is pending */ +int ivtv_msleep_timeout(unsigned int msecs, int intr); + +/* Wait on queue, returns -EINTR if interrupted */ +int ivtv_waitq(wait_queue_head_t *waitq); + +/* Read Hauppauge eeprom */ +struct tveeprom; /* forward reference */ +void ivtv_read_eeprom(struct ivtv *itv, struct tveeprom *tv); + +/* 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) */ +static inline int ivtv_raw_vbi(const struct 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) + +#define read_reg(reg) readl(itv->reg_mem + (reg)) +#define write_reg(val, reg) writel(val, itv->reg_mem + (reg)) +#define write_reg_sync(val, reg) \ + do { write_reg(val, reg); read_reg(reg); } while (0) + +#define read_enc(addr) readl(itv->enc_mem + (u32)(addr)) +#define write_enc(val, addr) writel(val, itv->enc_mem + (u32)(addr)) +#define write_enc_sync(val, addr) \ + do { write_enc(val, addr); read_enc(addr); } while (0) + +#define read_dec(addr) readl(itv->dec_mem + (u32)(addr)) +#define write_dec(val, addr) writel(val, itv->dec_mem + (u32)(addr)) +#define write_dec_sync(val, addr) \ + do { write_dec(val, addr); read_dec(addr); } 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...) \ + do { \ + struct v4l2_subdev *__sd; \ + __v4l2_device_call_subdevs_p(&(itv)->v4l2_dev, __sd, \ + !(hw) || (__sd->grp_id & (hw)), o, f , ##args); \ + } while (0) + +#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...) \ +({ \ + struct v4l2_subdev *__sd; \ + __v4l2_device_call_subdevs_until_err_p(&(itv)->v4l2_dev, __sd, \ + !(hw) || (__sd->grp_id & (hw)), o, f , ##args); \ +}) + +#define ivtv_call_all_err(itv, o, f, args...) ivtv_call_hw_err(itv, 0, o, f , ##args) + +#endif -- cgit v1.2.3 From 269c11fbac4f7b4ed58e77f3049b64b55a342234 Mon Sep 17 00:00:00 2001 From: Andy Walls Date: Sun, 2 Sep 2012 19:13:14 -0300 Subject: [media] ivtv, ivtv-alsa: Add initial ivtv-alsa interface driver for ivtv This is a cut-and-paste port of the cx18-alsa driver to create an ivtv-alsa interface module for the ivtv driver. It is not actually hooked-up to the PCM stream DMA buffers from the ivtv driver yet. That will be done in a coming change, since that portion is so very different from the cx18 driver. This code has all or more of the bugs and shortcomings of the cx18-alsa interface driver: inconsistent use of itvsc->slock, ivtv-alsa-mixer.c is dead code, assumes 48 ksps regardless of the actual setting of the audio capture, problems with proper struct ivtv and struct ivtv_stream housekeeping, struct ivtv_open_id.v4l2_fh abuse, and $DIETY knows what else. Signed-off-by: Andy Walls Signed-off-by: Mauro Carvalho Chehab --- drivers/media/pci/ivtv/Kconfig | 11 + drivers/media/pci/ivtv/Makefile | 2 + drivers/media/pci/ivtv/ivtv-alsa-main.c | 303 ++++++++++++++++++++++++++ drivers/media/pci/ivtv/ivtv-alsa-mixer.c | 175 +++++++++++++++ drivers/media/pci/ivtv/ivtv-alsa-mixer.h | 23 ++ drivers/media/pci/ivtv/ivtv-alsa-pcm.c | 357 +++++++++++++++++++++++++++++++ drivers/media/pci/ivtv/ivtv-alsa-pcm.h | 27 +++ drivers/media/pci/ivtv/ivtv-alsa.h | 75 +++++++ drivers/media/pci/ivtv/ivtv-driver.c | 37 ++++ drivers/media/pci/ivtv/ivtv-driver.h | 10 + drivers/media/pci/ivtv/ivtv-fileops.c | 4 +- drivers/media/pci/ivtv/ivtv-fileops.h | 4 +- drivers/media/pci/ivtv/ivtv-streams.c | 2 + 13 files changed, 1027 insertions(+), 3 deletions(-) create mode 100644 drivers/media/pci/ivtv/ivtv-alsa-main.c create mode 100644 drivers/media/pci/ivtv/ivtv-alsa-mixer.c create mode 100644 drivers/media/pci/ivtv/ivtv-alsa-mixer.h create mode 100644 drivers/media/pci/ivtv/ivtv-alsa-pcm.c create mode 100644 drivers/media/pci/ivtv/ivtv-alsa-pcm.h create mode 100644 drivers/media/pci/ivtv/ivtv-alsa.h (limited to 'drivers/media/pci/ivtv/ivtv-driver.h') diff --git a/drivers/media/pci/ivtv/Kconfig b/drivers/media/pci/ivtv/Kconfig index 89f65914cc8e..3906b883e2bc 100644 --- a/drivers/media/pci/ivtv/Kconfig +++ b/drivers/media/pci/ivtv/Kconfig @@ -28,6 +28,17 @@ config VIDEO_IVTV To compile this driver as a module, choose M here: the module will be called ivtv. +config VIDEO_IVTV_ALSA + tristate "Conexant cx23415/cx23416 PCM audio capture support" + depends on VIDEO_IVTV && SND && EXPERIMENTAL + select SND_PCM + ---help--- + This is an ALSA interface driver for direct PCM audio capture from + Conexant cx23415/cx23416 based PCI TV cards using the ivtv driver. + + To compile this driver as a module, choose M here: the + module will be called ivtv-alsa. + config VIDEO_FB_IVTV tristate "Conexant cx23415 framebuffer support" depends on VIDEO_IVTV && FB diff --git a/drivers/media/pci/ivtv/Makefile b/drivers/media/pci/ivtv/Makefile index 1408c9f1de93..0eaa88298b7e 100644 --- a/drivers/media/pci/ivtv/Makefile +++ b/drivers/media/pci/ivtv/Makefile @@ -3,8 +3,10 @@ ivtv-objs := ivtv-routing.o ivtv-cards.o ivtv-controls.o \ ivtv-gpio.o ivtv-i2c.o ivtv-ioctl.o ivtv-irq.o \ ivtv-mailbox.o ivtv-queue.o ivtv-streams.o ivtv-udma.o \ ivtv-vbi.o ivtv-yuv.o +ivtv-alsa-objs := ivtv-alsa-main.o ivtv-alsa-pcm.o obj-$(CONFIG_VIDEO_IVTV) += ivtv.o +obj-$(CONFIG_VIDEO_IVTV_ALSA) += ivtv-alsa.o obj-$(CONFIG_VIDEO_FB_IVTV) += ivtvfb.o ccflags-y += -I$(srctree)/drivers/media/i2c diff --git a/drivers/media/pci/ivtv/ivtv-alsa-main.c b/drivers/media/pci/ivtv/ivtv-alsa-main.c new file mode 100644 index 000000000000..8deab1629b3b --- /dev/null +++ b/drivers/media/pci/ivtv/ivtv-alsa-main.c @@ -0,0 +1,303 @@ +/* + * ALSA interface to ivtv PCM capture streams + * + * Copyright (C) 2009,2012 Andy Walls + * Copyright (C) 2009 Devin Heitmueller + * + * Portions of this work were sponsored by ONELAN Limited for the cx18 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., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307 USA + */ + +#include +#include +#include +#include +#include +#include + +#include + +#include +#include + +#include "ivtv-driver.h" +#include "ivtv-version.h" +#include "ivtv-alsa.h" +#include "ivtv-alsa-mixer.h" +#include "ivtv-alsa-pcm.h" + +int ivtv_alsa_debug; + +#define IVTV_DEBUG_ALSA_INFO(fmt, arg...) \ + do { \ + if (ivtv_alsa_debug & 2) \ + pr_info("%s: " fmt, "ivtv-alsa", ## arg); \ + } while (0) + +module_param_named(debug, ivtv_alsa_debug, int, 0644); +MODULE_PARM_DESC(debug, + "Debug level (bitmask). Default: 0\n" + "\t\t\t 1/0x0001: warning\n" + "\t\t\t 2/0x0002: info\n"); + +MODULE_AUTHOR("Andy Walls"); +MODULE_DESCRIPTION("CX23415/CX23416 ALSA Interface"); +MODULE_SUPPORTED_DEVICE("CX23415/CX23416 MPEG2 encoder"); +MODULE_LICENSE("GPL"); + +MODULE_VERSION(IVTV_VERSION); + +static inline +struct snd_ivtv_card *to_snd_ivtv_card(struct v4l2_device *v4l2_dev) +{ + return to_ivtv(v4l2_dev)->alsa; +} + +static inline +struct snd_ivtv_card *p_to_snd_ivtv_card(struct v4l2_device **v4l2_dev) +{ + return container_of(v4l2_dev, struct snd_ivtv_card, v4l2_dev); +} + +static void snd_ivtv_card_free(struct snd_ivtv_card *itvsc) +{ + if (itvsc == NULL) + return; + + if (itvsc->v4l2_dev != NULL) + to_ivtv(itvsc->v4l2_dev)->alsa = NULL; + + /* FIXME - take any other stopping actions needed */ + + kfree(itvsc); +} + +static void snd_ivtv_card_private_free(struct snd_card *sc) +{ + if (sc == NULL) + return; + snd_ivtv_card_free(sc->private_data); + sc->private_data = NULL; + sc->private_free = NULL; +} + +static int snd_ivtv_card_create(struct v4l2_device *v4l2_dev, + struct snd_card *sc, + struct snd_ivtv_card **itvsc) +{ + *itvsc = kzalloc(sizeof(struct snd_ivtv_card), GFP_KERNEL); + if (*itvsc == NULL) + return -ENOMEM; + + (*itvsc)->v4l2_dev = v4l2_dev; + (*itvsc)->sc = sc; + + sc->private_data = *itvsc; + sc->private_free = snd_ivtv_card_private_free; + + return 0; +} + +static int snd_ivtv_card_set_names(struct snd_ivtv_card *itvsc) +{ + struct ivtv *itv = to_ivtv(itvsc->v4l2_dev); + struct snd_card *sc = itvsc->sc; + + /* sc->driver is used by alsa-lib's configurator: simple, unique */ + strlcpy(sc->driver, "CX2341[56]", sizeof(sc->driver)); + + /* sc->shortname is a symlink in /proc/asound: IVTV-M -> cardN */ + snprintf(sc->shortname, sizeof(sc->shortname), "IVTV-%d", + itv->instance); + + /* sc->longname is read from /proc/asound/cards */ + snprintf(sc->longname, sizeof(sc->longname), + "CX2341[56] #%d %s TV/FM Radio/Line-In Capture", + itv->instance, itv->card_name); + + return 0; +} + +static int snd_ivtv_init(struct v4l2_device *v4l2_dev) +{ + struct ivtv *itv = to_ivtv(v4l2_dev); + struct snd_card *sc = NULL; + struct snd_ivtv_card *itvsc; + int ret; + + /* Numbrs steps from "Writing an ALSA Driver" by Takashi Iwai */ + + /* (1) Check and increment the device index */ + /* This is a no-op for us. We'll use the itv->instance */ + + /* (2) Create a card instance */ + ret = snd_card_create(SNDRV_DEFAULT_IDX1, /* use first available id */ + SNDRV_DEFAULT_STR1, /* xid from end of shortname*/ + THIS_MODULE, 0, &sc); + if (ret) { + IVTV_ALSA_ERR("%s: snd_card_create() failed with err %d\n", + __func__, ret); + goto err_exit; + } + + /* (3) Create a main component */ + ret = snd_ivtv_card_create(v4l2_dev, sc, &itvsc); + if (ret) { + IVTV_ALSA_ERR("%s: snd_ivtv_card_create() failed with err %d\n", + __func__, ret); + goto err_exit_free; + } + + /* (4) Set the driver ID and name strings */ + snd_ivtv_card_set_names(itvsc); + + /* (5) Create other components: mixer, PCM, & proc files */ +#if 0 + ret = snd_ivtv_mixer_create(itvsc); + if (ret) { + IVTV_ALSA_WARN("%s: snd_ivtv_mixer_create() failed with err %d:" + " proceeding anyway\n", __func__, ret); + } +#endif + + ret = snd_ivtv_pcm_create(itvsc); + if (ret) { + IVTV_ALSA_ERR("%s: snd_ivtv_pcm_create() failed with err %d\n", + __func__, ret); + goto err_exit_free; + } + /* FIXME - proc files */ + + /* (7) Set the driver data and return 0 */ + /* We do this out of normal order for PCI drivers to avoid races */ + itv->alsa = itvsc; + + /* (6) Register the card instance */ + ret = snd_card_register(sc); + if (ret) { + itv->alsa = NULL; + IVTV_ALSA_ERR("%s: snd_card_register() failed with err %d\n", + __func__, ret); + goto err_exit_free; + } + + return 0; + +err_exit_free: + if (sc != NULL) + snd_card_free(sc); + kfree(itvsc); +err_exit: + return ret; +} + +int ivtv_alsa_load(struct ivtv *itv) +{ + struct v4l2_device *v4l2_dev = &itv->v4l2_dev; + struct ivtv_stream *s; + + if (v4l2_dev == NULL) { + pr_err("ivtv-alsa: %s: struct v4l2_device * is NULL\n", + __func__); + return 0; + } + + itv = to_ivtv(v4l2_dev); + if (itv == NULL) { + pr_err("ivtv-alsa itv is NULL\n"); + return 0; + } + + s = &itv->streams[IVTV_ENC_STREAM_TYPE_PCM]; + if (s->vdev == NULL) { + IVTV_DEBUG_ALSA_INFO("%s: PCM stream for card is disabled - " + "skipping\n", __func__); + return 0; + } + + if (itv->alsa != NULL) { + IVTV_ALSA_ERR("%s: struct snd_ivtv_card * already exists\n", + __func__); + return 0; + } + + if (snd_ivtv_init(v4l2_dev)) { + IVTV_ALSA_ERR("%s: failed to create struct snd_ivtv_card\n", + __func__); + } else { + IVTV_DEBUG_ALSA_INFO("%s: created ivtv ALSA interface instance " + "\n", __func__); + } + return 0; +} + +static int __init ivtv_alsa_init(void) +{ + pr_info("ivtv-alsa: module loading...\n"); + ivtv_ext_init = &ivtv_alsa_load; + return 0; +} + +static void __exit snd_ivtv_exit(struct snd_ivtv_card *itvsc) +{ + struct ivtv *itv = to_ivtv(itvsc->v4l2_dev); + + /* FIXME - pointer checks & shutdown itvsc */ + + snd_card_free(itvsc->sc); + itv->alsa = NULL; +} + +static int __exit ivtv_alsa_exit_callback(struct device *dev, void *data) +{ + struct v4l2_device *v4l2_dev = dev_get_drvdata(dev); + struct snd_ivtv_card *itvsc; + + if (v4l2_dev == NULL) { + pr_err("ivtv-alsa: %s: struct v4l2_device * is NULL\n", + __func__); + return 0; + } + + itvsc = to_snd_ivtv_card(v4l2_dev); + if (itvsc == NULL) { + IVTV_ALSA_WARN("%s: struct snd_ivtv_card * is NULL\n", + __func__); + return 0; + } + + snd_ivtv_exit(itvsc); + return 0; +} + +static void __exit ivtv_alsa_exit(void) +{ + struct device_driver *drv; + int ret; + + pr_info("ivtv-alsa: module unloading...\n"); + + drv = driver_find("ivtv", &pci_bus_type); + ret = driver_for_each_device(drv, NULL, NULL, ivtv_alsa_exit_callback); + (void)ret; /* suppress compiler warning */ + + ivtv_ext_init = NULL; + pr_info("ivtv-alsa: module unload complete\n"); +} + +module_init(ivtv_alsa_init); +module_exit(ivtv_alsa_exit); diff --git a/drivers/media/pci/ivtv/ivtv-alsa-mixer.c b/drivers/media/pci/ivtv/ivtv-alsa-mixer.c new file mode 100644 index 000000000000..33ec05b09af3 --- /dev/null +++ b/drivers/media/pci/ivtv/ivtv-alsa-mixer.c @@ -0,0 +1,175 @@ +/* + * ALSA mixer controls for the + * ALSA interface to ivtv PCM capture streams + * + * Copyright (C) 2009,2012 Andy Walls + * + * 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 + */ + +#include +#include +#include +#include +#include + +#include + +#include +#include +#include + +#include "ivtv-alsa.h" +#include "ivtv-driver.h" + +/* + * Note the cx25840-core volume scale is funny, due to the alignment of the + * scale with another chip's range: + * + * v4l2_control value /512 indicated dB actual dB reg 0x8d4 + * 0x0000 - 0x01ff 0 -119 -96 228 + * 0x0200 - 0x02ff 1 -118 -96 228 + * ... + * 0x2c00 - 0x2dff 22 -97 -96 228 + * 0x2e00 - 0x2fff 23 -96 -96 228 + * 0x3000 - 0x31ff 24 -95 -95 226 + * ... + * 0xee00 - 0xefff 119 0 0 36 + * ... + * 0xfe00 - 0xffff 127 +8 +8 20 + */ +static inline int dB_to_cx25840_vol(int dB) +{ + if (dB < -96) + dB = -96; + else if (dB > 8) + dB = 8; + return (dB + 119) << 9; +} + +static inline int cx25840_vol_to_dB(int v) +{ + if (v < (23 << 9)) + v = (23 << 9); + else if (v > (127 << 9)) + v = (127 << 9); + return (v >> 9) - 119; +} + +static int snd_ivtv_mixer_tv_vol_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 1; + /* We're already translating values, just keep this control in dB */ + uinfo->value.integer.min = -96; + uinfo->value.integer.max = 8; + uinfo->value.integer.step = 1; + return 0; +} + +static int snd_ivtv_mixer_tv_vol_get(struct snd_kcontrol *kctl, + struct snd_ctl_elem_value *uctl) +{ + struct snd_ivtv_card *itvsc = snd_kcontrol_chip(kctl); + struct ivtv *itv = to_ivtv(itvsc->v4l2_dev); + struct v4l2_control vctrl; + int ret; + + vctrl.id = V4L2_CID_AUDIO_VOLUME; + vctrl.value = dB_to_cx25840_vol(uctl->value.integer.value[0]); + + snd_ivtv_lock(itvsc); + ret = v4l2_subdev_call(itv->sd_audio, core, g_ctrl, &vctrl); + snd_ivtv_unlock(itvsc); + + if (!ret) + uctl->value.integer.value[0] = cx25840_vol_to_dB(vctrl.value); + return ret; +} + +static int snd_ivtv_mixer_tv_vol_put(struct snd_kcontrol *kctl, + struct snd_ctl_elem_value *uctl) +{ + struct snd_ivtv_card *itvsc = snd_kcontrol_chip(kctl); + struct ivtv *itv = to_ivtv(itvsc->v4l2_dev); + struct v4l2_control vctrl; + int ret; + + vctrl.id = V4L2_CID_AUDIO_VOLUME; + vctrl.value = dB_to_cx25840_vol(uctl->value.integer.value[0]); + + snd_ivtv_lock(itvsc); + + /* Fetch current state */ + ret = v4l2_subdev_call(itv->sd_audio, core, g_ctrl, &vctrl); + + if (ret || + (cx25840_vol_to_dB(vctrl.value) != uctl->value.integer.value[0])) { + + /* Set, if needed */ + vctrl.value = dB_to_cx25840_vol(uctl->value.integer.value[0]); + ret = v4l2_subdev_call(itv->sd_audio, core, s_ctrl, &vctrl); + if (!ret) + ret = 1; /* Indicate control was changed w/o error */ + } + snd_ivtv_unlock(itvsc); + + return ret; +} + + +/* This is a bit of overkill, the slider is already in dB internally */ +static DECLARE_TLV_DB_SCALE(snd_ivtv_mixer_tv_vol_db_scale, -9600, 100, 0); + +static struct snd_kcontrol_new snd_ivtv_mixer_tv_vol __initdata = { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Analog TV Capture Volume", + .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | + SNDRV_CTL_ELEM_ACCESS_TLV_READ, + .info = snd_ivtv_mixer_tv_volume_info, + .get = snd_ivtv_mixer_tv_volume_get, + .put = snd_ivtv_mixer_tv_volume_put, + .tlv.p = snd_ivtv_mixer_tv_vol_db_scale +}; + +/* FIXME - add mute switch and balance, bass, treble sliders: + V4L2_CID_AUDIO_MUTE + + V4L2_CID_AUDIO_BALANCE + + V4L2_CID_AUDIO_BASS + V4L2_CID_AUDIO_TREBLE +*/ + +/* FIXME - add stereo, lang1, lang2, mono menu */ +/* FIXME - add I2S volume */ + +int __init snd_ivtv_mixer_create(struct snd_ivtv_card *itvsc) +{ + struct v4l2_device *v4l2_dev = itvsc->v4l2_dev; + struct snd_card *sc = itvsc->sc; + int ret; + + strlcpy(sc->mixername, "CX2341[56] Mixer", sizeof(sc->mixername)); + + ret = snd_ctl_add(sc, snd_ctl_new1(snd_ivtv_mixer_tv_vol, itvsc)); + if (ret) { + IVTV_ALSA_WARN("%s: failed to add %s control, err %d\n", + __func__, snd_ivtv_mixer_tv_vol.name, ret); + } + return ret; +} diff --git a/drivers/media/pci/ivtv/ivtv-alsa-mixer.h b/drivers/media/pci/ivtv/ivtv-alsa-mixer.h new file mode 100644 index 000000000000..cdde36704d53 --- /dev/null +++ b/drivers/media/pci/ivtv/ivtv-alsa-mixer.h @@ -0,0 +1,23 @@ +/* + * ALSA mixer controls for the + * ALSA interface to ivtv PCM capture streams + * + * Copyright (C) 2009,2012 Andy Walls + * + * 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 + */ + +int __init snd_ivtv_mixer_create(struct snd_ivtv_card *itvsc); diff --git a/drivers/media/pci/ivtv/ivtv-alsa-pcm.c b/drivers/media/pci/ivtv/ivtv-alsa-pcm.c new file mode 100644 index 000000000000..82c708e1df91 --- /dev/null +++ b/drivers/media/pci/ivtv/ivtv-alsa-pcm.c @@ -0,0 +1,357 @@ +/* + * ALSA PCM device for the + * ALSA interface to ivtv PCM capture streams + * + * Copyright (C) 2009,2012 Andy Walls + * Copyright (C) 2009 Devin Heitmueller + * + * Portions of this work were sponsored by ONELAN Limited for the cx18 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., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307 USA + */ + +#include +#include +#include +#include + +#include + +#include +#include + +#include "ivtv-driver.h" +#include "ivtv-queue.h" +#include "ivtv-streams.h" +#include "ivtv-fileops.h" +#include "ivtv-alsa.h" + +static unsigned int pcm_debug; +module_param(pcm_debug, int, 0644); +MODULE_PARM_DESC(pcm_debug, "enable debug messages for pcm"); + +#define dprintk(fmt, arg...) \ + do { \ + if (pcm_debug) \ + pr_info("ivtv-alsa-pcm %s: " fmt, __func__, ##arg); \ + } while (0) + +static struct snd_pcm_hardware snd_ivtv_hw_capture = { + .info = SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_MMAP_VALID, + + .formats = SNDRV_PCM_FMTBIT_S16_LE, + + .rates = SNDRV_PCM_RATE_48000, + + .rate_min = 48000, + .rate_max = 48000, + .channels_min = 2, + .channels_max = 2, + .buffer_bytes_max = 62720 * 8, /* just about the value in usbaudio.c */ + .period_bytes_min = 64, /* 12544/2, */ + .period_bytes_max = 12544, + .periods_min = 2, + .periods_max = 98, /* 12544, */ +}; + +void ivtv_alsa_announce_pcm_data(struct snd_ivtv_card *itvsc, u8 *pcm_data, + size_t num_bytes) +{ + struct snd_pcm_substream *substream; + struct snd_pcm_runtime *runtime; + unsigned int oldptr; + unsigned int stride; + int period_elapsed = 0; + int length; + + dprintk("ivtv alsa announce ptr=%p data=%p num_bytes=%zd\n", itvsc, + pcm_data, num_bytes); + + substream = itvsc->capture_pcm_substream; + if (substream == NULL) { + dprintk("substream was NULL\n"); + return; + } + + runtime = substream->runtime; + if (runtime == NULL) { + dprintk("runtime was NULL\n"); + return; + } + + stride = runtime->frame_bits >> 3; + if (stride == 0) { + dprintk("stride is zero\n"); + return; + } + + length = num_bytes / stride; + if (length == 0) { + dprintk("%s: length was zero\n", __func__); + return; + } + + if (runtime->dma_area == NULL) { + dprintk("dma area was NULL - ignoring\n"); + return; + } + + oldptr = itvsc->hwptr_done_capture; + if (oldptr + length >= runtime->buffer_size) { + unsigned int cnt = + runtime->buffer_size - oldptr; + memcpy(runtime->dma_area + oldptr * stride, pcm_data, + cnt * stride); + memcpy(runtime->dma_area, pcm_data + cnt * stride, + length * stride - cnt * stride); + } else { + memcpy(runtime->dma_area + oldptr * stride, pcm_data, + length * stride); + } + snd_pcm_stream_lock(substream); + + itvsc->hwptr_done_capture += length; + if (itvsc->hwptr_done_capture >= + runtime->buffer_size) + itvsc->hwptr_done_capture -= + runtime->buffer_size; + + itvsc->capture_transfer_done += length; + if (itvsc->capture_transfer_done >= + runtime->period_size) { + itvsc->capture_transfer_done -= + runtime->period_size; + period_elapsed = 1; + } + + snd_pcm_stream_unlock(substream); + + if (period_elapsed) + snd_pcm_period_elapsed(substream); +} + +static int snd_ivtv_pcm_capture_open(struct snd_pcm_substream *substream) +{ + struct snd_ivtv_card *itvsc = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct v4l2_device *v4l2_dev = itvsc->v4l2_dev; + struct ivtv *itv = to_ivtv(v4l2_dev); + struct ivtv_stream *s; + struct ivtv_open_id item; + int ret; + + /* Instruct the CX2341[56] to start sending packets */ + snd_ivtv_lock(itvsc); + s = &itv->streams[IVTV_ENC_STREAM_TYPE_PCM]; + + v4l2_fh_init(&item.fh, s->vdev); + item.itv = itv; + item.type = s->type; + + /* See if the stream is available */ + if (ivtv_claim_stream(&item, item.type)) { + /* No, it's already in use */ + snd_ivtv_unlock(itvsc); + return -EBUSY; + } + + if (test_bit(IVTV_F_S_STREAMOFF, &s->s_flags) || + test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags)) { + /* We're already streaming. No additional action required */ + snd_ivtv_unlock(itvsc); + return 0; + } + + + runtime->hw = snd_ivtv_hw_capture; + snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); + itvsc->capture_pcm_substream = substream; + runtime->private_data = itv; + + itv->pcm_announce_callback = ivtv_alsa_announce_pcm_data; + + /* Not currently streaming, so start it up */ + set_bit(IVTV_F_S_STREAMING, &s->s_flags); + ret = ivtv_start_v4l2_encode_stream(s); + snd_ivtv_unlock(itvsc); + + return ret; +} + +static int snd_ivtv_pcm_capture_close(struct snd_pcm_substream *substream) +{ + struct snd_ivtv_card *itvsc = snd_pcm_substream_chip(substream); + struct v4l2_device *v4l2_dev = itvsc->v4l2_dev; + struct ivtv *itv = to_ivtv(v4l2_dev); + struct ivtv_stream *s; + + /* Instruct the ivtv to stop sending packets */ + snd_ivtv_lock(itvsc); + s = &itv->streams[IVTV_ENC_STREAM_TYPE_PCM]; + ivtv_stop_v4l2_encode_stream(s, 0); + clear_bit(IVTV_F_S_STREAMING, &s->s_flags); + + ivtv_release_stream(s); + + itv->pcm_announce_callback = NULL; + snd_ivtv_unlock(itvsc); + + return 0; +} + +static int snd_ivtv_pcm_ioctl(struct snd_pcm_substream *substream, + unsigned int cmd, void *arg) +{ + struct snd_ivtv_card *itvsc = snd_pcm_substream_chip(substream); + int ret; + + snd_ivtv_lock(itvsc); + ret = snd_pcm_lib_ioctl(substream, cmd, arg); + snd_ivtv_unlock(itvsc); + return ret; +} + + +static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, + size_t size) +{ + struct snd_pcm_runtime *runtime = subs->runtime; + + dprintk("Allocating vbuffer\n"); + if (runtime->dma_area) { + if (runtime->dma_bytes > size) + return 0; + + vfree(runtime->dma_area); + } + runtime->dma_area = vmalloc(size); + if (!runtime->dma_area) + return -ENOMEM; + + runtime->dma_bytes = size; + + return 0; +} + +static int snd_ivtv_pcm_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + dprintk("%s called\n", __func__); + + return snd_pcm_alloc_vmalloc_buffer(substream, + params_buffer_bytes(params)); +} + +static int snd_ivtv_pcm_hw_free(struct snd_pcm_substream *substream) +{ + struct snd_ivtv_card *itvsc = snd_pcm_substream_chip(substream); + unsigned long flags; + + spin_lock_irqsave(&itvsc->slock, flags); + if (substream->runtime->dma_area) { + dprintk("freeing pcm capture region\n"); + vfree(substream->runtime->dma_area); + substream->runtime->dma_area = NULL; + } + spin_unlock_irqrestore(&itvsc->slock, flags); + + return 0; +} + +static int snd_ivtv_pcm_prepare(struct snd_pcm_substream *substream) +{ + struct snd_ivtv_card *itvsc = snd_pcm_substream_chip(substream); + + itvsc->hwptr_done_capture = 0; + itvsc->capture_transfer_done = 0; + + return 0; +} + +static int snd_ivtv_pcm_trigger(struct snd_pcm_substream *substream, int cmd) +{ + return 0; +} + +static +snd_pcm_uframes_t snd_ivtv_pcm_pointer(struct snd_pcm_substream *substream) +{ + unsigned long flags; + snd_pcm_uframes_t hwptr_done; + struct snd_ivtv_card *itvsc = snd_pcm_substream_chip(substream); + + spin_lock_irqsave(&itvsc->slock, flags); + hwptr_done = itvsc->hwptr_done_capture; + spin_unlock_irqrestore(&itvsc->slock, flags); + + return hwptr_done; +} + +static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs, + unsigned long offset) +{ + void *pageptr = subs->runtime->dma_area + offset; + + return vmalloc_to_page(pageptr); +} + +static struct snd_pcm_ops snd_ivtv_pcm_capture_ops = { + .open = snd_ivtv_pcm_capture_open, + .close = snd_ivtv_pcm_capture_close, + .ioctl = snd_ivtv_pcm_ioctl, + .hw_params = snd_ivtv_pcm_hw_params, + .hw_free = snd_ivtv_pcm_hw_free, + .prepare = snd_ivtv_pcm_prepare, + .trigger = snd_ivtv_pcm_trigger, + .pointer = snd_ivtv_pcm_pointer, + .page = snd_pcm_get_vmalloc_page, +}; + +int snd_ivtv_pcm_create(struct snd_ivtv_card *itvsc) +{ + struct snd_pcm *sp; + struct snd_card *sc = itvsc->sc; + struct v4l2_device *v4l2_dev = itvsc->v4l2_dev; + struct ivtv *itv = to_ivtv(v4l2_dev); + int ret; + + ret = snd_pcm_new(sc, "CX2341[56] PCM", + 0, /* PCM device 0, the only one for this card */ + 0, /* 0 playback substreams */ + 1, /* 1 capture substream */ + &sp); + if (ret) { + IVTV_ALSA_ERR("%s: snd_ivtv_pcm_create() failed with err %d\n", + __func__, ret); + goto err_exit; + } + + spin_lock_init(&itvsc->slock); + + snd_pcm_set_ops(sp, SNDRV_PCM_STREAM_CAPTURE, + &snd_ivtv_pcm_capture_ops); + sp->info_flags = 0; + sp->private_data = itvsc; + strlcpy(sp->name, itv->card_name, sizeof(sp->name)); + + return 0; + +err_exit: + return ret; +} diff --git a/drivers/media/pci/ivtv/ivtv-alsa-pcm.h b/drivers/media/pci/ivtv/ivtv-alsa-pcm.h new file mode 100644 index 000000000000..5ab18319ea4d --- /dev/null +++ b/drivers/media/pci/ivtv/ivtv-alsa-pcm.h @@ -0,0 +1,27 @@ +/* + * ALSA PCM device for the + * ALSA interface to ivtv PCM capture streams + * + * Copyright (C) 2009,2012 Andy Walls + * + * 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 + */ + +int __init snd_ivtv_pcm_create(struct snd_ivtv_card *itvsc); + +/* Used by ivtv driver to announce the PCM data to the module */ +void ivtv_alsa_announce_pcm_data(struct snd_ivtv_card *card, u8 *pcm_data, + size_t num_bytes); diff --git a/drivers/media/pci/ivtv/ivtv-alsa.h b/drivers/media/pci/ivtv/ivtv-alsa.h new file mode 100644 index 000000000000..4a0d8f2c254d --- /dev/null +++ b/drivers/media/pci/ivtv/ivtv-alsa.h @@ -0,0 +1,75 @@ +/* + * ALSA interface to ivtv PCM capture streams + * + * Copyright (C) 2009,2012 Andy Walls + * Copyright (C) 2009 Devin Heitmueller + * + * 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 + */ + +struct snd_card; + +struct snd_ivtv_card { + struct v4l2_device *v4l2_dev; + struct snd_card *sc; + unsigned int capture_transfer_done; + unsigned int hwptr_done_capture; + struct snd_pcm_substream *capture_pcm_substream; + spinlock_t slock; +}; + +extern int ivtv_alsa_debug; + +/* + * File operations that manipulate the encoder or video or audio subdevices + * need to be serialized. Use the same lock we use for v4l2 file ops. + */ +static inline void snd_ivtv_lock(struct snd_ivtv_card *itvsc) +{ + struct ivtv *itv = to_ivtv(itvsc->v4l2_dev); + mutex_lock(&itv->serialize_lock); +} + +static inline void snd_ivtv_unlock(struct snd_ivtv_card *itvsc) +{ + struct ivtv *itv = to_ivtv(itvsc->v4l2_dev); + mutex_unlock(&itv->serialize_lock); +} + +#define IVTV_ALSA_DBGFLG_WARN (1 << 0) +#define IVTV_ALSA_DBGFLG_INFO (1 << 1) + +#define IVTV_ALSA_DEBUG(x, type, fmt, args...) \ + do { \ + if ((x) & ivtv_alsa_debug) \ + pr_info("%s-alsa: " type ": " fmt, \ + v4l2_dev->name , ## args); \ + } while (0) + +#define IVTV_ALSA_DEBUG_WARN(fmt, args...) \ + IVTV_ALSA_DEBUG(IVTV_ALSA_DBGFLG_WARN, "warning", fmt , ## args) + +#define IVTV_ALSA_DEBUG_INFO(fmt, args...) \ + IVTV_ALSA_DEBUG(IVTV_ALSA_DBGFLG_INFO, "info", fmt , ## args) + +#define IVTV_ALSA_ERR(fmt, args...) \ + pr_err("%s-alsa: " fmt, v4l2_dev->name , ## args) + +#define IVTV_ALSA_WARN(fmt, args...) \ + pr_warn("%s-alsa: " fmt, v4l2_dev->name , ## args) + +#define IVTV_ALSA_INFO(fmt, args...) \ + pr_info("%s-alsa: " fmt, v4l2_dev->name , ## args) diff --git a/drivers/media/pci/ivtv/ivtv-driver.c b/drivers/media/pci/ivtv/ivtv-driver.c index 5462ce2f60ea..eed95a396665 100644 --- a/drivers/media/pci/ivtv/ivtv-driver.c +++ b/drivers/media/pci/ivtv/ivtv-driver.c @@ -68,6 +68,10 @@ setting this to 1 you ensure that radio0 is now also radio1. */ int ivtv_first_minor; +/* Callback for registering extensions */ +int (*ivtv_ext_init)(struct ivtv *); +EXPORT_SYMBOL(ivtv_ext_init); + /* add your revision and whatnot here */ static struct pci_device_id ivtv_pci_tbl[] __devinitdata = { {PCI_VENDOR_ID_ICOMP, PCI_DEVICE_ID_IVTV15, @@ -279,6 +283,34 @@ MODULE_LICENSE("GPL"); MODULE_VERSION(IVTV_VERSION); +#if defined(CONFIG_MODULES) && defined(MODULE) +static void request_module_async(struct work_struct *work) +{ + struct ivtv *dev = container_of(work, struct ivtv, request_module_wk); + + /* Make sure ivtv-alsa module is loaded */ + request_module("ivtv-alsa"); + + /* Initialize ivtv-alsa for this instance of the cx18 device */ + if (ivtv_ext_init != NULL) + ivtv_ext_init(dev); +} + +static void request_modules(struct ivtv *dev) +{ + INIT_WORK(&dev->request_module_wk, request_module_async); + schedule_work(&dev->request_module_wk); +} + +static void flush_request_modules(struct ivtv *dev) +{ + flush_work_sync(&dev->request_module_wk); +} +#else +#define request_modules(dev) +#define flush_request_modules(dev) +#endif /* CONFIG_MODULES */ + void ivtv_clear_irq_mask(struct ivtv *itv, u32 mask) { itv->irqmask &= ~mask; @@ -1253,6 +1285,9 @@ static int __devinit ivtv_probe(struct pci_dev *pdev, goto free_streams; } IVTV_INFO("Initialized card: %s\n", itv->card_name); + + /* Load ivtv submodules (ivtv-alsa) */ + request_modules(itv); return 0; free_streams: @@ -1380,6 +1415,8 @@ static void ivtv_remove(struct pci_dev *pdev) IVTV_DEBUG_INFO("Removing card\n"); + flush_request_modules(itv); + if (test_bit(IVTV_F_I_INITED, &itv->i_flags)) { /* Stop all captures */ IVTV_DEBUG_INFO("Stopping all streams\n"); diff --git a/drivers/media/pci/ivtv/ivtv-driver.h b/drivers/media/pci/ivtv/ivtv-driver.h index a7e00f8938f8..1918e7326795 100644 --- a/drivers/media/pci/ivtv/ivtv-driver.h +++ b/drivers/media/pci/ivtv/ivtv-driver.h @@ -669,6 +669,13 @@ struct ivtv { atomic_t capturing; /* count number of active capture streams */ atomic_t decoding; /* count number of active decoding streams */ + /* ALSA interface for PCM capture stream */ + struct snd_ivtv_card *alsa; + void (*pcm_announce_callback)(struct snd_ivtv_card *card, u8 *pcm_data, + size_t num_bytes); + + /* Used for ivtv-alsa module loading */ + struct work_struct request_module_wk; /* Interrupts & DMA */ u32 irqmask; /* active interrupts */ @@ -752,6 +759,9 @@ static inline struct ivtv *to_ivtv(struct v4l2_device *v4l2_dev) return container_of(v4l2_dev, struct ivtv, v4l2_dev); } +/* ivtv extensions to be loaded */ +extern int (*ivtv_ext_init)(struct ivtv *); + /* Globals */ extern int ivtv_first_minor; diff --git a/drivers/media/pci/ivtv/ivtv-fileops.c b/drivers/media/pci/ivtv/ivtv-fileops.c index 88bce907cdef..7f2eb5f62fd1 100644 --- a/drivers/media/pci/ivtv/ivtv-fileops.c +++ b/drivers/media/pci/ivtv/ivtv-fileops.c @@ -41,7 +41,7 @@ associated VBI streams are also automatically claimed. Possible error returns: -EBUSY if someone else has claimed the stream or 0 on success. */ -static int ivtv_claim_stream(struct ivtv_open_id *id, int type) +int ivtv_claim_stream(struct ivtv_open_id *id, int type) { struct ivtv *itv = id->itv; struct ivtv_stream *s = &itv->streams[type]; @@ -96,6 +96,7 @@ static int ivtv_claim_stream(struct ivtv_open_id *id, int type) set_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags); return 0; } +EXPORT_SYMBOL(ivtv_claim_stream); /* This function releases a previously claimed stream. It will take into account associated VBI streams. */ @@ -146,6 +147,7 @@ void ivtv_release_stream(struct ivtv_stream *s) clear_bit(IVTV_F_S_CLAIMED, &s_vbi->s_flags); ivtv_flush_queues(s_vbi); } +EXPORT_SYMBOL(ivtv_release_stream); static void ivtv_dualwatch(struct ivtv *itv) { diff --git a/drivers/media/pci/ivtv/ivtv-fileops.h b/drivers/media/pci/ivtv/ivtv-fileops.h index 049a2923965d..5e08800772ca 100644 --- a/drivers/media/pci/ivtv/ivtv-fileops.h +++ b/drivers/media/pci/ivtv/ivtv-fileops.h @@ -37,8 +37,8 @@ void ivtv_mute(struct ivtv *itv); void ivtv_unmute(struct ivtv *itv); /* Utilities */ - -/* Release a previously claimed stream. */ +/* Shared with ivtv-alsa module */ +int ivtv_claim_stream(struct ivtv_open_id *id, int type); void ivtv_release_stream(struct ivtv_stream *s); #endif diff --git a/drivers/media/pci/ivtv/ivtv-streams.c b/drivers/media/pci/ivtv/ivtv-streams.c index f08ec17cc3dc..ea6135203f58 100644 --- a/drivers/media/pci/ivtv/ivtv-streams.c +++ b/drivers/media/pci/ivtv/ivtv-streams.c @@ -629,6 +629,7 @@ int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s) atomic_inc(&itv->capturing); return 0; } +EXPORT_SYMBOL(ivtv_start_v4l2_encode_stream); static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s) { @@ -885,6 +886,7 @@ int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end) return 0; } +EXPORT_SYMBOL(ivtv_stop_v4l2_encode_stream); int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts) { -- cgit v1.2.3 From 4313902ebe33155209472215c62d2f29d117be29 Mon Sep 17 00:00:00 2001 From: Andy Walls Date: Mon, 3 Sep 2012 14:50:49 -0300 Subject: [media] ivtv-alsa, ivtv: Connect ivtv PCM capture stream to ivtv-alsa interface driver This change hooks up the ivtv PCM capture stream to the ivtv-alsa interface driver. This is all that should be needed for basic CX23415/CX23416 PCM audio capture to be available via ALSA device nodes. Signed-off-by: Andy Walls Signed-off-by: Mauro Carvalho Chehab --- drivers/media/pci/ivtv/ivtv-driver.h | 1 + drivers/media/pci/ivtv/ivtv-irq.c | 50 ++++++++++++++++++++++++++++++++++++ 2 files changed, 51 insertions(+) (limited to 'drivers/media/pci/ivtv/ivtv-driver.h') diff --git a/drivers/media/pci/ivtv/ivtv-driver.h b/drivers/media/pci/ivtv/ivtv-driver.h index 1918e7326795..bc309f42c8ed 100644 --- a/drivers/media/pci/ivtv/ivtv-driver.h +++ b/drivers/media/pci/ivtv/ivtv-driver.h @@ -259,6 +259,7 @@ struct ivtv_mailbox_data { #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 */ /* Event notifications */ #define IVTV_F_I_EV_DEC_STOPPED 28 /* decoder stopped event */ diff --git a/drivers/media/pci/ivtv/ivtv-irq.c b/drivers/media/pci/ivtv/ivtv-irq.c index 1b3b9578bf47..19a7c9b990a3 100644 --- a/drivers/media/pci/ivtv/ivtv-irq.c +++ b/drivers/media/pci/ivtv/ivtv-irq.c @@ -38,6 +38,34 @@ static const int ivtv_stream_map[] = { IVTV_ENC_STREAM_TYPE_VBI, }; +static void ivtv_pcm_work_handler(struct ivtv *itv) +{ + struct ivtv_stream *s = &itv->streams[IVTV_ENC_STREAM_TYPE_PCM]; + struct ivtv_buffer *buf; + + /* Pass the PCM data to ivtv-alsa */ + + while (1) { + /* + * Users should not be using both the ALSA and V4L2 PCM audio + * capture interfaces at the same time. If the user is doing + * this, there maybe a buffer in q_io to grab, use, and put + * back in rotation. + */ + buf = ivtv_dequeue(s, &s->q_io); + if (buf == NULL) + buf = ivtv_dequeue(s, &s->q_full); + if (buf == NULL) + break; + + if (buf->readpos < buf->bytesused) + itv->pcm_announce_callback(itv->alsa, + (u8 *)(buf->buf + buf->readpos), + (size_t)(buf->bytesused - buf->readpos)); + + ivtv_enqueue(s, buf, &s->q_free); + } +} static void ivtv_pio_work_handler(struct ivtv *itv) { @@ -83,6 +111,9 @@ void ivtv_irq_work_handler(struct kthread_work *work) if (test_and_clear_bit(IVTV_F_I_WORK_HANDLER_YUV, &itv->i_flags)) ivtv_yuv_work_handler(itv); + + if (test_and_clear_bit(IVTV_F_I_WORK_HANDLER_PCM, &itv->i_flags)) + ivtv_pcm_work_handler(itv); } /* Determine the required DMA size, setup enough buffers in the predma queue and @@ -293,7 +324,26 @@ static void dma_post(struct ivtv_stream *s) return; } } + ivtv_queue_move(s, &s->q_dma, NULL, &s->q_full, s->q_dma.bytesused); + + if (s->type == IVTV_ENC_STREAM_TYPE_PCM && + itv->pcm_announce_callback != NULL) { + /* + * Set up the work handler to pass the data to ivtv-alsa. + * + * We just use q_full and let the work handler race with users + * making ivtv-fileops.c calls on the PCM device node. + * + * Users should not be using both the ALSA and V4L2 PCM audio + * capture interfaces at the same time. If the user does this, + * fragments of data will just go out each interface as they + * race for PCM data. + */ + set_bit(IVTV_F_I_WORK_HANDLER_PCM, &itv->i_flags); + set_bit(IVTV_F_I_HAVE_WORK, &itv->i_flags); + } + if (s->fh) wake_up(&s->waitq); } -- cgit v1.2.3