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* Driver for the Conexant CX25821 PCIe bridge
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* Copyright (C) 2009 Conexant Systems Inc.
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* Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
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* Based on Steven Toth <stoth@linuxtv.org> cx23885 driver
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#include <linux/pci.h>
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#include <linux/i2c.h>
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#include <linux/i2c-algo-bit.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include <linux/sched.h>
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#include <linux/kdev_t.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-device.h>
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#include <media/tuner.h>
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#include <media/tveeprom.h>
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#include <media/videobuf-dma-sg.h>
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#include <media/videobuf-dvb.h>
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#include "btcx-risc.h"
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#include "cx25821-reg.h"
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#include "cx25821-medusa-reg.h"
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#include "cx25821-sram.h"
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#include "cx25821-audio.h"
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#include "media/cx2341x.h"
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#include <linux/version.h>
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#include <linux/mutex.h>
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#define CX25821_VERSION_CODE KERNEL_VERSION(0, 0, 106)
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#define NO_SYNC_LINE (-1U)
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#define CX25821_MAXBOARDS 2
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#define LINE_SIZE_D1 1440
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/* Number of decoders and encoders */
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#define MAX_DECODERS 8
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#define MAX_ENCODERS 2
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#define QUAD_DECODERS 4
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#define MAX_CAMERAS 16
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/* Max number of inputs by card */
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#define MAX_CX25821_INPUT 8
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#define INPUT(nr) (&cx25821_boards[dev->board].input[nr])
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#define RESOURCE_VIDEO0 1
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#define RESOURCE_VIDEO1 2
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#define RESOURCE_VIDEO2 4
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#define RESOURCE_VIDEO3 8
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#define RESOURCE_VIDEO4 16
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#define RESOURCE_VIDEO5 32
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#define RESOURCE_VIDEO6 64
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#define RESOURCE_VIDEO7 128
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#define RESOURCE_VIDEO8 256
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#define RESOURCE_VIDEO9 512
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#define RESOURCE_VIDEO10 1024
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#define RESOURCE_VIDEO11 2048
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#define RESOURCE_VIDEO_IOCTL 4096
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#define BUFFER_TIMEOUT (HZ) /* 0.5 seconds */
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#define UNKNOWN_BOARD 0
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#define CX25821_BOARD 1
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/* Currently supported by the driver */
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#define CX25821_NORMS (\
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V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_JP | V4L2_STD_NTSC_M_KR | \
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V4L2_STD_PAL_BG | V4L2_STD_PAL_DK | V4L2_STD_PAL_I | \
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V4L2_STD_PAL_M | V4L2_STD_PAL_N | V4L2_STD_PAL_H | \
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#define CX25821_BOARD_CONEXANT_ATHENA10 1
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#define MAX_VID_CHANNEL_NUM 12
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#define VID_CHANNEL_NUM 8
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#define CX25821_NR_INPUT 2
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u32 fourcc; /* v4l2 format id */
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struct cx25821_ctrl {
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struct v4l2_queryctrl v;
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struct cx25821_tvnorm {
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struct cx25821_dev *dev;
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enum v4l2_buf_type type;
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enum v4l2_priority prio;
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struct v4l2_window win;
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struct v4l2_clip *clips;
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struct cx25821_fmt *fmt;
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unsigned int width, height;
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struct videobuf_queue vidq;
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struct videobuf_queue vbiq;
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/* H264 Encoder specifics ONLY */
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struct videobuf_queue mpegq;
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atomic_t v4l_reading;
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CX25821_VMUX_COMPOSITE = 1,
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enum cx25821_src_sel_type {
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CX25821_SRC_SEL_EXT_656_VIDEO = 0,
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CX25821_SRC_SEL_PARALLEL_MPEG_VIDEO
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/* buffer for one video frame */
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struct cx25821_buffer {
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/* common v4l buffer stuff -- must be first */
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struct videobuf_buffer vb;
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/* cx25821 specific */
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struct btcx_riscmem risc;
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struct cx25821_fmt *fmt;
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struct cx25821_input {
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enum cx25821_itype type;
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u32 gpio0, gpio1, gpio2, gpio3;
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CX25821_UNDEFINED = 0,
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struct cx25821_board {
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unsigned int tuner_type;
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unsigned int radio_type;
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unsigned char tuner_addr;
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unsigned char radio_addr;
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struct cx25821_input input[CX25821_NR_INPUT];
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struct cx25821_subid {
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struct cx25821_dev *dev;
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struct i2c_adapter i2c_adap;
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struct i2c_algo_bit_data i2c_algo;
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struct i2c_client i2c_client;
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/* cx25821 registers used for raw addess */
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struct cx25821_dmaqueue {
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struct list_head active;
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struct list_head queued;
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struct timer_list timeout;
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struct btcx_riscmem stopper;
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struct cx25821_data {
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struct cx25821_dev *dev;
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struct sram_channel *channel;
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struct cx25821_channel {
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struct v4l2_prio_state prio;
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struct cx25821_data timeout_data;
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struct video_device *video_dev;
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struct cx25821_dmaqueue vidq;
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struct sram_channel *sram_channels;
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int use_cif_resolution;
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struct list_head devlist;
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struct v4l2_device v4l2_dev;
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unsigned char pci_rev, pci_lat;
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int pci_bus, pci_slot;
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/* I2C adapters: Master 1 & 2 (External) & Master 3 (Internal only) */
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struct cx25821_i2c i2c_bus[3];
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struct cx25821_channel channels[MAX_VID_CHANNEL_NUM];
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unsigned int tuner_type;
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unsigned char tuner_addr;
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unsigned int radio_type;
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unsigned char radio_addr;
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unsigned int has_radio;
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unsigned int videc_type;
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unsigned char videc_addr;
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unsigned short _max_num_decoders;
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/* Analog Audio Upstream */
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int _audio_is_running;
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int _audiopixel_format;
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int _is_first_audio_frame;
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int _audiofile_status;
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int _audio_lines_count;
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int _audioframe_count;
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int _audio_upstream_channel;
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int _last_index_irq; /* The last interrupt index processed. */
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__le32 *_risc_audio_jmp_addr;
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__le32 *_risc_virt_start_addr;
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__le32 *_risc_virt_addr;
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dma_addr_t _risc_phys_addr;
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dma_addr_t _risc_phys_start_addr;
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unsigned int _audiorisc_size;
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unsigned int _audiodata_buf_size;
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__le32 *_audiodata_buf_virt_addr;
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dma_addr_t _audiodata_buf_phys_addr;
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char *_audiofilename;
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struct video_device *vbi_dev;
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struct video_device *radio_dev;
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struct video_device *ioctl_dev;
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int _channel_upstream_select;
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unsigned int _risc_size;
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__le32 *_dma_virt_start_addr;
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__le32 *_dma_virt_addr;
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dma_addr_t _dma_phys_addr;
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dma_addr_t _dma_phys_start_addr;
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unsigned int _data_buf_size;
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__le32 *_data_buf_virt_addr;
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dma_addr_t _data_buf_phys_addr;
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int _pixel_format_ch2;
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int _is_first_frame_ch2;
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int _file_status_ch2;
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int _lines_count_ch2;
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int _frame_count_ch2;
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int _channel2_upstream_select;
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unsigned int _risc_size_ch2;
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__le32 *_dma_virt_start_addr_ch2;
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__le32 *_dma_virt_addr_ch2;
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dma_addr_t _dma_phys_addr_ch2;
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dma_addr_t _dma_phys_start_addr_ch2;
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unsigned int _data_buf_size_ch2;
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__le32 *_data_buf_virt_addr_ch2;
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dma_addr_t _data_buf_phys_addr_ch2;
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char *_defaultname_ch2;
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/* MPEG Encoder ONLY settings */
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struct cx2341x_mpeg_params mpeg_params;
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struct video_device *v4l_device;
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atomic_t v4l_reader_count;
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struct cx25821_tvnorm encodernorm;
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u32 upstream_riscbuf_size;
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u32 upstream_databuf_size;
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u32 upstream_riscbuf_size_ch2;
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u32 upstream_databuf_size_ch2;
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u32 audio_upstream_riscbuf_size;
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u32 audio_upstream_databuf_size;
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int _audioframe_index;
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struct workqueue_struct *_irq_queues;
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struct work_struct _irq_work_entry;
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struct workqueue_struct *_irq_queues_ch2;
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struct work_struct _irq_work_entry_ch2;
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struct workqueue_struct *_irq_audio_queues;
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struct work_struct _audio_work_entry;
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char *input_filename;
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char *input_filename_ch2;
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int _frame_index_ch2;
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char *vid_stdname_ch2;
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int pixel_format_ch2;
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int channel_select_ch2;
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char *input_audiofilename;
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struct upstream_user_struct {
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char *input_filename;
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struct downstream_user_struct {
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int cif_resolution_enable;
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extern struct upstream_user_struct *up_data;
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static inline struct cx25821_dev *get_cx25821(struct v4l2_device *v4l2_dev)
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return container_of(v4l2_dev, struct cx25821_dev, v4l2_dev);
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#define cx25821_call_all(dev, o, f, args...) \
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v4l2_device_call_all(&dev->v4l2_dev, 0, o, f, ##args)
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extern struct list_head cx25821_devlist;
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extern struct mutex cx25821_devlist_mutex;
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extern struct cx25821_board cx25821_boards[];
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extern struct cx25821_subid cx25821_subids[];
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#define SRAM_CH00 0 /* Video A */
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#define SRAM_CH01 1 /* Video B */
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#define SRAM_CH02 2 /* Video C */
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#define SRAM_CH03 3 /* Video D */
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#define SRAM_CH04 4 /* Video E */
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#define SRAM_CH05 5 /* Video F */
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#define SRAM_CH06 6 /* Video G */
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#define SRAM_CH07 7 /* Video H */
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#define SRAM_CH08 8 /* Audio A */
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#define SRAM_CH09 9 /* Video Upstream I */
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#define SRAM_CH10 10 /* Video Upstream J */
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#define SRAM_CH11 11 /* Audio Upstream AUD_CHANNEL_B */
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#define VID_UPSTREAM_SRAM_CHANNEL_I SRAM_CH09
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#define VID_UPSTREAM_SRAM_CHANNEL_J SRAM_CH10
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#define AUDIO_UPSTREAM_SRAM_CHANNEL_B SRAM_CH11
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#define VIDEO_IOCTL_CH 11
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struct sram_channel {
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/* For Upstream Video */
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extern struct sram_channel cx25821_sram_channels[];
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#define STATUS_SUCCESS 0
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#define STATUS_UNSUCCESSFUL -1
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#define cx_read(reg) readl(dev->lmmio + ((reg)>>2))
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#define cx_write(reg, value) writel((value), dev->lmmio + ((reg)>>2))
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#define cx_andor(reg, mask, value) \
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writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\
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((value) & (mask)), dev->lmmio+((reg)>>2))
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#define cx_set(reg, bit) cx_andor((reg), (bit), (bit))
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#define cx_clear(reg, bit) cx_andor((reg), (bit), 0)
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#define Set_GPIO_Bit(Bit) (1 << Bit)
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#define Clear_GPIO_Bit(Bit) (~(1 << Bit))
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#define CX25821_ERR(fmt, args...) \
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pr_err("(%d): " fmt, dev->board, ##args)
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#define CX25821_WARN(fmt, args...) \
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pr_warn("(%d): " fmt, dev->board, ##args)
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#define CX25821_INFO(fmt, args...) \
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pr_info("(%d): " fmt, dev->board, ##args)
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extern int cx25821_i2c_register(struct cx25821_i2c *bus);
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extern void cx25821_card_setup(struct cx25821_dev *dev);
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extern int cx25821_ir_init(struct cx25821_dev *dev);
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extern int cx25821_i2c_read(struct cx25821_i2c *bus, u16 reg_addr, int *value);
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extern int cx25821_i2c_write(struct cx25821_i2c *bus, u16 reg_addr, int value);
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extern int cx25821_i2c_unregister(struct cx25821_i2c *bus);
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extern void cx25821_gpio_init(struct cx25821_dev *dev);
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extern void cx25821_set_gpiopin_direction(struct cx25821_dev *dev,
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int pin_number, int pin_logic_value);
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extern int medusa_video_init(struct cx25821_dev *dev);
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extern int medusa_set_videostandard(struct cx25821_dev *dev);
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extern void medusa_set_resolution(struct cx25821_dev *dev, int width,
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extern int medusa_set_brightness(struct cx25821_dev *dev, int brightness,
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extern int medusa_set_contrast(struct cx25821_dev *dev, int contrast,
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extern int medusa_set_hue(struct cx25821_dev *dev, int hue, int decoder);
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extern int medusa_set_saturation(struct cx25821_dev *dev, int saturation,
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extern int cx25821_sram_channel_setup(struct cx25821_dev *dev,
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struct sram_channel *ch, unsigned int bpl,
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extern int cx25821_risc_buffer(struct pci_dev *pci, struct btcx_riscmem *risc,
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struct scatterlist *sglist,
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unsigned int top_offset,
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unsigned int bottom_offset,
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unsigned int padding, unsigned int lines);
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extern int cx25821_risc_databuffer_audio(struct pci_dev *pci,
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struct btcx_riscmem *risc,
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struct scatterlist *sglist,
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unsigned int lines, unsigned int lpi);
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extern void cx25821_free_buffer(struct videobuf_queue *q,
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struct cx25821_buffer *buf);
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extern int cx25821_risc_stopper(struct pci_dev *pci, struct btcx_riscmem *risc,
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u32 reg, u32 mask, u32 value);
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extern void cx25821_sram_channel_dump(struct cx25821_dev *dev,
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struct sram_channel *ch);
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extern void cx25821_sram_channel_dump_audio(struct cx25821_dev *dev,
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struct sram_channel *ch);
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extern struct cx25821_dev *cx25821_dev_get(struct pci_dev *pci);
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extern void cx25821_print_irqbits(char *name, char *tag, char **strings,
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int len, u32 bits, u32 mask);
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extern void cx25821_dev_unregister(struct cx25821_dev *dev);
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extern int cx25821_sram_channel_setup_audio(struct cx25821_dev *dev,
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struct sram_channel *ch,
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unsigned int bpl, u32 risc);
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extern int cx25821_vidupstream_init_ch1(struct cx25821_dev *dev,
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int channel_select, int pixel_format);
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extern int cx25821_vidupstream_init_ch2(struct cx25821_dev *dev,
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int channel_select, int pixel_format);
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extern int cx25821_audio_upstream_init(struct cx25821_dev *dev,
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extern void cx25821_free_mem_upstream_ch1(struct cx25821_dev *dev);
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extern void cx25821_free_mem_upstream_ch2(struct cx25821_dev *dev);
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extern void cx25821_free_mem_upstream_audio(struct cx25821_dev *dev);
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extern void cx25821_start_upstream_video_ch1(struct cx25821_dev *dev,
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struct upstream_user_struct
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extern void cx25821_start_upstream_video_ch2(struct cx25821_dev *dev,
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struct upstream_user_struct
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extern void cx25821_start_upstream_audio(struct cx25821_dev *dev,
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struct upstream_user_struct *up_data);
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extern void cx25821_stop_upstream_video_ch1(struct cx25821_dev *dev);
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extern void cx25821_stop_upstream_video_ch2(struct cx25821_dev *dev);
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extern void cx25821_stop_upstream_audio(struct cx25821_dev *dev);
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extern int cx25821_sram_channel_setup_upstream(struct cx25821_dev *dev,
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struct sram_channel *ch,
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unsigned int bpl, u32 risc);
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extern void cx25821_set_pixel_format(struct cx25821_dev *dev, int channel,
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extern void cx25821_videoioctl_unregister(struct cx25821_dev *dev);
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extern struct video_device *cx25821_vdev_init(struct cx25821_dev *dev,
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struct video_device *template,