1/* 2 * Driver for the Conexant CX25821 PCIe bridge 3 * 4 * Copyright (C) 2009 Conexant Systems Inc. 5 * Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com> 6 * Based on Steven Toth <stoth@linuxtv.org> cx23885 driver 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 22 */ 23 24#ifndef CX25821_H_ 25#define CX25821_H_ 26 27#include <linux/pci.h> 28#include <linux/i2c.h> 29#include <linux/interrupt.h> 30#include <linux/delay.h> 31#include <linux/sched.h> 32#include <linux/kdev_t.h> 33 34#include <media/v4l2-common.h> 35#include <media/v4l2-device.h> 36#include <media/v4l2-ctrls.h> 37#include <media/videobuf-dma-sg.h> 38 39#include "btcx-risc.h" 40#include "cx25821-reg.h" 41#include "cx25821-medusa-reg.h" 42#include "cx25821-sram.h" 43#include "cx25821-audio.h" 44 45#include <linux/version.h> 46#include <linux/mutex.h> 47 48#define CX25821_VERSION_CODE KERNEL_VERSION(0, 0, 106) 49 50#define UNSET (-1U) 51#define NO_SYNC_LINE (-1U) 52 53#define CX25821_MAXBOARDS 2 54 55#define LINE_SIZE_D1 1440 56 57/* Number of decoders and encoders */ 58#define MAX_DECODERS 8 59#define MAX_ENCODERS 2 60#define QUAD_DECODERS 4 61#define MAX_CAMERAS 16 62 63/* Max number of inputs by card */ 64#define MAX_CX25821_INPUT 8 65#define RESOURCE_VIDEO0 1 66#define RESOURCE_VIDEO1 2 67#define RESOURCE_VIDEO2 4 68#define RESOURCE_VIDEO3 8 69#define RESOURCE_VIDEO4 16 70#define RESOURCE_VIDEO5 32 71#define RESOURCE_VIDEO6 64 72#define RESOURCE_VIDEO7 128 73#define RESOURCE_VIDEO8 256 74#define RESOURCE_VIDEO9 512 75#define RESOURCE_VIDEO10 1024 76#define RESOURCE_VIDEO11 2048 77 78#define BUFFER_TIMEOUT (HZ) /* 0.5 seconds */ 79 80#define UNKNOWN_BOARD 0 81#define CX25821_BOARD 1 82 83/* Currently supported by the driver */ 84#define CX25821_NORMS (\ 85 V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_JP | V4L2_STD_NTSC_M_KR | \ 86 V4L2_STD_PAL_BG | V4L2_STD_PAL_DK | V4L2_STD_PAL_I | \ 87 V4L2_STD_PAL_M | V4L2_STD_PAL_N | V4L2_STD_PAL_H | \ 88 V4L2_STD_PAL_Nc) 89 90#define CX25821_BOARD_CONEXANT_ATHENA10 1 91#define MAX_VID_CHANNEL_NUM 12 92#define VID_CHANNEL_NUM 8 93 94struct cx25821_fmt { 95 char *name; 96 u32 fourcc; /* v4l2 format id */ 97 int depth; 98 int flags; 99 u32 cxformat; 100}; 101 102struct cx25821_tvnorm { 103 char *name; 104 v4l2_std_id id; 105 u32 cxiformat; 106 u32 cxoformat; 107}; 108 109enum cx25821_src_sel_type { 110 CX25821_SRC_SEL_EXT_656_VIDEO = 0, 111 CX25821_SRC_SEL_PARALLEL_MPEG_VIDEO 112}; 113 114/* buffer for one video frame */ 115struct cx25821_buffer { 116 /* common v4l buffer stuff -- must be first */ 117 struct videobuf_buffer vb; 118 119 /* cx25821 specific */ 120 unsigned int bpl; 121 struct btcx_riscmem risc; 122 const struct cx25821_fmt *fmt; 123 u32 count; 124}; 125 126enum port { 127 CX25821_UNDEFINED = 0, 128 CX25821_RAW, 129 CX25821_264 130}; 131 132struct cx25821_board { 133 const char *name; 134 enum port porta; 135 enum port portb; 136 enum port portc; 137 138 u32 clk_freq; 139}; 140 141struct cx25821_i2c { 142 struct cx25821_dev *dev; 143 144 int nr; 145 146 /* i2c i/o */ 147 struct i2c_adapter i2c_adap; 148 struct i2c_client i2c_client; 149 u32 i2c_rc; 150 151 /* cx25821 registers used for raw addess */ 152 u32 i2c_period; 153 u32 reg_ctrl; 154 u32 reg_stat; 155 u32 reg_addr; 156 u32 reg_rdata; 157 u32 reg_wdata; 158}; 159 160struct cx25821_dmaqueue { 161 struct list_head active; 162 struct list_head queued; 163 struct timer_list timeout; 164 struct btcx_riscmem stopper; 165 u32 count; 166}; 167 168struct cx25821_data { 169 struct cx25821_dev *dev; 170 const struct sram_channel *channel; 171}; 172 173struct cx25821_dev; 174 175struct cx25821_channel; 176 177struct cx25821_video_out_data { 178 struct cx25821_channel *chan; 179 int _line_size; 180 int _prog_cnt; 181 int _pixel_format; 182 int _is_first_frame; 183 int _is_running; 184 int _file_status; 185 int _lines_count; 186 int _frame_count; 187 unsigned int _risc_size; 188 189 __le32 *_dma_virt_start_addr; 190 __le32 *_dma_virt_addr; 191 dma_addr_t _dma_phys_addr; 192 dma_addr_t _dma_phys_start_addr; 193 194 unsigned int _data_buf_size; 195 __le32 *_data_buf_virt_addr; 196 dma_addr_t _data_buf_phys_addr; 197 198 u32 upstream_riscbuf_size; 199 u32 upstream_databuf_size; 200 int is_60hz; 201 int _frame_index; 202 int cur_frame_index; 203 int curpos; 204 wait_queue_head_t waitq; 205}; 206 207struct cx25821_channel { 208 unsigned id; 209 struct cx25821_dev *dev; 210 struct v4l2_fh *streaming_fh; 211 212 struct v4l2_ctrl_handler hdl; 213 struct cx25821_data timeout_data; 214 215 struct video_device vdev; 216 struct cx25821_dmaqueue dma_vidq; 217 struct videobuf_queue vidq; 218 219 const struct sram_channel *sram_channels; 220 221 const struct cx25821_fmt *fmt; 222 unsigned int width, height; 223 int pixel_formats; 224 int use_cif_resolution; 225 int cif_width; 226 227 /* video output data for the video output channel */ 228 struct cx25821_video_out_data *out; 229}; 230 231struct snd_card; 232 233struct cx25821_dev { 234 struct v4l2_device v4l2_dev; 235 236 /* pci stuff */ 237 struct pci_dev *pci; 238 unsigned char pci_rev, pci_lat; 239 int pci_bus, pci_slot; 240 u32 base_io_addr; 241 u32 __iomem *lmmio; 242 u8 __iomem *bmmio; 243 int pci_irqmask; 244 int hwrevision; 245 /* used by cx25821-alsa */ 246 struct snd_card *card; 247 248 u32 clk_freq; 249 250 /* I2C adapters: Master 1 & 2 (External) & Master 3 (Internal only) */ 251 struct cx25821_i2c i2c_bus[3]; 252 253 int nr; 254 struct mutex lock; 255 256 struct cx25821_channel channels[MAX_VID_CHANNEL_NUM]; 257 258 /* board details */ 259 unsigned int board; 260 char name[32]; 261 262 /* Analog video */ 263 unsigned int input; 264 v4l2_std_id tvnorm; 265 unsigned short _max_num_decoders; 266 267 /* Analog Audio Upstream */ 268 int _audio_is_running; 269 int _audiopixel_format; 270 int _is_first_audio_frame; 271 int _audiofile_status; 272 int _audio_lines_count; 273 int _audioframe_count; 274 int _audio_upstream_channel; 275 int _last_index_irq; /* The last interrupt index processed. */ 276 277 __le32 *_risc_audio_jmp_addr; 278 __le32 *_risc_virt_start_addr; 279 __le32 *_risc_virt_addr; 280 dma_addr_t _risc_phys_addr; 281 dma_addr_t _risc_phys_start_addr; 282 283 unsigned int _audiorisc_size; 284 unsigned int _audiodata_buf_size; 285 __le32 *_audiodata_buf_virt_addr; 286 dma_addr_t _audiodata_buf_phys_addr; 287 char *_audiofilename; 288 u32 audio_upstream_riscbuf_size; 289 u32 audio_upstream_databuf_size; 290 int _audioframe_index; 291 struct workqueue_struct *_irq_audio_queues; 292 struct work_struct _audio_work_entry; 293 char *input_audiofilename; 294 295 /* V4l */ 296 spinlock_t slock; 297 298 /* Video Upstream */ 299 struct cx25821_video_out_data vid_out_data[2]; 300}; 301 302static inline struct cx25821_dev *get_cx25821(struct v4l2_device *v4l2_dev) 303{ 304 return container_of(v4l2_dev, struct cx25821_dev, v4l2_dev); 305} 306 307extern struct cx25821_board cx25821_boards[]; 308 309#define SRAM_CH00 0 /* Video A */ 310#define SRAM_CH01 1 /* Video B */ 311#define SRAM_CH02 2 /* Video C */ 312#define SRAM_CH03 3 /* Video D */ 313#define SRAM_CH04 4 /* Video E */ 314#define SRAM_CH05 5 /* Video F */ 315#define SRAM_CH06 6 /* Video G */ 316#define SRAM_CH07 7 /* Video H */ 317 318#define SRAM_CH08 8 /* Audio A */ 319#define SRAM_CH09 9 /* Video Upstream I */ 320#define SRAM_CH10 10 /* Video Upstream J */ 321#define SRAM_CH11 11 /* Audio Upstream AUD_CHANNEL_B */ 322 323#define VID_UPSTREAM_SRAM_CHANNEL_I SRAM_CH09 324#define VID_UPSTREAM_SRAM_CHANNEL_J SRAM_CH10 325#define AUDIO_UPSTREAM_SRAM_CHANNEL_B SRAM_CH11 326 327struct sram_channel { 328 char *name; 329 u32 i; 330 u32 cmds_start; 331 u32 ctrl_start; 332 u32 cdt; 333 u32 fifo_start; 334 u32 fifo_size; 335 u32 ptr1_reg; 336 u32 ptr2_reg; 337 u32 cnt1_reg; 338 u32 cnt2_reg; 339 u32 int_msk; 340 u32 int_stat; 341 u32 int_mstat; 342 u32 dma_ctl; 343 u32 gpcnt_ctl; 344 u32 gpcnt; 345 u32 aud_length; 346 u32 aud_cfg; 347 u32 fld_aud_fifo_en; 348 u32 fld_aud_risc_en; 349 350 /* For Upstream Video */ 351 u32 vid_fmt_ctl; 352 u32 vid_active_ctl1; 353 u32 vid_active_ctl2; 354 u32 vid_cdt_size; 355 356 u32 vip_ctl; 357 u32 pix_frmt; 358 u32 jumponly; 359 u32 irq_bit; 360}; 361 362extern const struct sram_channel cx25821_sram_channels[]; 363 364#define cx_read(reg) readl(dev->lmmio + ((reg)>>2)) 365#define cx_write(reg, value) writel((value), dev->lmmio + ((reg)>>2)) 366 367#define cx_andor(reg, mask, value) \ 368 writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\ 369 ((value) & (mask)), dev->lmmio+((reg)>>2)) 370 371#define cx_set(reg, bit) cx_andor((reg), (bit), (bit)) 372#define cx_clear(reg, bit) cx_andor((reg), (bit), 0) 373 374#define Set_GPIO_Bit(Bit) (1 << Bit) 375#define Clear_GPIO_Bit(Bit) (~(1 << Bit)) 376 377#define CX25821_ERR(fmt, args...) \ 378 pr_err("(%d): " fmt, dev->board, ##args) 379#define CX25821_WARN(fmt, args...) \ 380 pr_warn("(%d): " fmt, dev->board, ##args) 381#define CX25821_INFO(fmt, args...) \ 382 pr_info("(%d): " fmt, dev->board, ##args) 383 384extern int cx25821_i2c_register(struct cx25821_i2c *bus); 385extern int cx25821_i2c_read(struct cx25821_i2c *bus, u16 reg_addr, int *value); 386extern int cx25821_i2c_write(struct cx25821_i2c *bus, u16 reg_addr, int value); 387extern int cx25821_i2c_unregister(struct cx25821_i2c *bus); 388extern void cx25821_gpio_init(struct cx25821_dev *dev); 389extern void cx25821_set_gpiopin_direction(struct cx25821_dev *dev, 390 int pin_number, int pin_logic_value); 391 392extern int medusa_video_init(struct cx25821_dev *dev); 393extern int medusa_set_videostandard(struct cx25821_dev *dev); 394extern void medusa_set_resolution(struct cx25821_dev *dev, int width, 395 int decoder_select); 396extern int medusa_set_brightness(struct cx25821_dev *dev, int brightness, 397 int decoder); 398extern int medusa_set_contrast(struct cx25821_dev *dev, int contrast, 399 int decoder); 400extern int medusa_set_hue(struct cx25821_dev *dev, int hue, int decoder); 401extern int medusa_set_saturation(struct cx25821_dev *dev, int saturation, 402 int decoder); 403 404extern int cx25821_sram_channel_setup(struct cx25821_dev *dev, 405 const struct sram_channel *ch, unsigned int bpl, 406 u32 risc); 407 408extern int cx25821_risc_buffer(struct pci_dev *pci, struct btcx_riscmem *risc, 409 struct scatterlist *sglist, 410 unsigned int top_offset, 411 unsigned int bottom_offset, 412 unsigned int bpl, 413 unsigned int padding, unsigned int lines); 414extern int cx25821_risc_databuffer_audio(struct pci_dev *pci, 415 struct btcx_riscmem *risc, 416 struct scatterlist *sglist, 417 unsigned int bpl, 418 unsigned int lines, unsigned int lpi); 419extern void cx25821_free_buffer(struct videobuf_queue *q, 420 struct cx25821_buffer *buf); 421extern int cx25821_risc_stopper(struct pci_dev *pci, struct btcx_riscmem *risc, 422 u32 reg, u32 mask, u32 value); 423extern void cx25821_sram_channel_dump(struct cx25821_dev *dev, 424 const struct sram_channel *ch); 425extern void cx25821_sram_channel_dump_audio(struct cx25821_dev *dev, 426 const struct sram_channel *ch); 427 428extern struct cx25821_dev *cx25821_dev_get(struct pci_dev *pci); 429extern void cx25821_print_irqbits(char *name, char *tag, char **strings, 430 int len, u32 bits, u32 mask); 431extern void cx25821_dev_unregister(struct cx25821_dev *dev); 432extern int cx25821_sram_channel_setup_audio(struct cx25821_dev *dev, 433 const struct sram_channel *ch, 434 unsigned int bpl, u32 risc); 435 436extern int cx25821_vidupstream_init(struct cx25821_channel *chan, int pixel_format); 437extern int cx25821_audio_upstream_init(struct cx25821_dev *dev, 438 int channel_select); 439extern int cx25821_write_frame(struct cx25821_channel *chan, 440 const char __user *data, size_t count); 441extern void cx25821_free_mem_upstream(struct cx25821_channel *chan); 442extern void cx25821_free_mem_upstream_audio(struct cx25821_dev *dev); 443extern void cx25821_stop_upstream_video(struct cx25821_channel *chan); 444extern void cx25821_stop_upstream_audio(struct cx25821_dev *dev); 445extern int cx25821_sram_channel_setup_upstream(struct cx25821_dev *dev, 446 const struct sram_channel *ch, 447 unsigned int bpl, u32 risc); 448extern void cx25821_set_pixel_format(struct cx25821_dev *dev, int channel, 449 u32 format); 450 451#endif 452