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/videobuf2-dma-sg.h> 38 39#include "cx25821-reg.h" 40#include "cx25821-medusa-reg.h" 41#include "cx25821-sram.h" 42#include "cx25821-audio.h" 43 44#include <linux/version.h> 45#include <linux/mutex.h> 46 47#define CX25821_VERSION_CODE KERNEL_VERSION(0, 0, 106) 48 49#define UNSET (-1U) 50#define NO_SYNC_LINE (-1U) 51 52#define CX25821_MAXBOARDS 2 53 54#define LINE_SIZE_D1 1440 55 56/* Number of decoders and encoders */ 57#define MAX_DECODERS 8 58#define MAX_ENCODERS 2 59#define QUAD_DECODERS 4 60#define MAX_CAMERAS 16 61 62/* Max number of inputs by card */ 63#define MAX_CX25821_INPUT 8 64#define RESOURCE_VIDEO0 1 65#define RESOURCE_VIDEO1 2 66#define RESOURCE_VIDEO2 4 67#define RESOURCE_VIDEO3 8 68#define RESOURCE_VIDEO4 16 69#define RESOURCE_VIDEO5 32 70#define RESOURCE_VIDEO6 64 71#define RESOURCE_VIDEO7 128 72#define RESOURCE_VIDEO8 256 73#define RESOURCE_VIDEO9 512 74#define RESOURCE_VIDEO10 1024 75#define RESOURCE_VIDEO11 2048 76 77#define BUFFER_TIMEOUT (HZ) /* 0.5 seconds */ 78 79#define UNKNOWN_BOARD 0 80#define CX25821_BOARD 1 81 82/* Currently supported by the driver */ 83#define CX25821_NORMS (\ 84 V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_JP | V4L2_STD_NTSC_M_KR | \ 85 V4L2_STD_PAL_BG | V4L2_STD_PAL_DK | V4L2_STD_PAL_I | \ 86 V4L2_STD_PAL_M | V4L2_STD_PAL_N | V4L2_STD_PAL_H | \ 87 V4L2_STD_PAL_Nc) 88 89#define CX25821_BOARD_CONEXANT_ATHENA10 1 90#define MAX_VID_CHANNEL_NUM 12 91 92/* 93 * Maximum capture-only channels. This can go away once video/audio output 94 * is fully supported in this driver. 95 */ 96#define MAX_VID_CAP_CHANNEL_NUM 10 97 98#define VID_CHANNEL_NUM 8 99 100struct cx25821_fmt { 101 char *name; 102 u32 fourcc; /* v4l2 format id */ 103 int depth; 104 int flags; 105 u32 cxformat; 106}; 107 108struct cx25821_tvnorm { 109 char *name; 110 v4l2_std_id id; 111 u32 cxiformat; 112 u32 cxoformat; 113}; 114 115enum cx25821_src_sel_type { 116 CX25821_SRC_SEL_EXT_656_VIDEO = 0, 117 CX25821_SRC_SEL_PARALLEL_MPEG_VIDEO 118}; 119 120struct cx25821_riscmem { 121 unsigned int size; 122 __le32 *cpu; 123 __le32 *jmp; 124 dma_addr_t dma; 125}; 126 127/* buffer for one video frame */ 128struct cx25821_buffer { 129 /* common v4l buffer stuff -- must be first */ 130 struct vb2_buffer vb; 131 struct list_head queue; 132 133 /* cx25821 specific */ 134 unsigned int bpl; 135 struct cx25821_riscmem risc; 136 const struct cx25821_fmt *fmt; 137}; 138 139enum port { 140 CX25821_UNDEFINED = 0, 141 CX25821_RAW, 142 CX25821_264 143}; 144 145struct cx25821_board { 146 const char *name; 147 enum port porta; 148 enum port portb; 149 enum port portc; 150 151 u32 clk_freq; 152}; 153 154struct cx25821_i2c { 155 struct cx25821_dev *dev; 156 157 int nr; 158 159 /* i2c i/o */ 160 struct i2c_adapter i2c_adap; 161 struct i2c_client i2c_client; 162 u32 i2c_rc; 163 164 /* cx25821 registers used for raw addess */ 165 u32 i2c_period; 166 u32 reg_ctrl; 167 u32 reg_stat; 168 u32 reg_addr; 169 u32 reg_rdata; 170 u32 reg_wdata; 171}; 172 173struct cx25821_dmaqueue { 174 struct list_head active; 175 u32 count; 176}; 177 178struct cx25821_dev; 179 180struct cx25821_channel; 181 182struct cx25821_video_out_data { 183 struct cx25821_channel *chan; 184 int _line_size; 185 int _prog_cnt; 186 int _pixel_format; 187 int _is_first_frame; 188 int _is_running; 189 int _file_status; 190 int _lines_count; 191 int _frame_count; 192 unsigned int _risc_size; 193 194 __le32 *_dma_virt_start_addr; 195 __le32 *_dma_virt_addr; 196 dma_addr_t _dma_phys_addr; 197 dma_addr_t _dma_phys_start_addr; 198 199 unsigned int _data_buf_size; 200 __le32 *_data_buf_virt_addr; 201 dma_addr_t _data_buf_phys_addr; 202 203 u32 upstream_riscbuf_size; 204 u32 upstream_databuf_size; 205 int is_60hz; 206 int _frame_index; 207 int cur_frame_index; 208 int curpos; 209 wait_queue_head_t waitq; 210}; 211 212struct cx25821_channel { 213 unsigned id; 214 struct cx25821_dev *dev; 215 216 struct v4l2_ctrl_handler hdl; 217 218 struct video_device vdev; 219 struct cx25821_dmaqueue dma_vidq; 220 struct vb2_queue vidq; 221 222 const struct sram_channel *sram_channels; 223 224 const struct cx25821_fmt *fmt; 225 unsigned field; 226 unsigned int width, height; 227 int pixel_formats; 228 int use_cif_resolution; 229 int cif_width; 230 231 /* video output data for the video output channel */ 232 struct cx25821_video_out_data *out; 233}; 234 235struct snd_card; 236 237struct cx25821_dev { 238 struct v4l2_device v4l2_dev; 239 240 /* pci stuff */ 241 struct pci_dev *pci; 242 unsigned char pci_rev, pci_lat; 243 int pci_bus, pci_slot; 244 u32 base_io_addr; 245 u32 __iomem *lmmio; 246 u8 __iomem *bmmio; 247 int pci_irqmask; 248 int hwrevision; 249 /* used by cx25821-alsa */ 250 struct snd_card *card; 251 void *alloc_ctx; 252 253 u32 clk_freq; 254 255 /* I2C adapters: Master 1 & 2 (External) & Master 3 (Internal only) */ 256 struct cx25821_i2c i2c_bus[3]; 257 258 int nr; 259 struct mutex lock; 260 261 struct cx25821_channel channels[MAX_VID_CHANNEL_NUM]; 262 263 /* board details */ 264 unsigned int board; 265 char name[32]; 266 267 /* Analog video */ 268 unsigned int input; 269 v4l2_std_id tvnorm; 270 unsigned short _max_num_decoders; 271 272 /* Analog Audio Upstream */ 273 int _audio_is_running; 274 int _audiopixel_format; 275 int _is_first_audio_frame; 276 int _audiofile_status; 277 int _audio_lines_count; 278 int _audioframe_count; 279 int _audio_upstream_channel; 280 int _last_index_irq; /* The last interrupt index processed. */ 281 282 __le32 *_risc_audio_jmp_addr; 283 __le32 *_risc_virt_start_addr; 284 __le32 *_risc_virt_addr; 285 dma_addr_t _risc_phys_addr; 286 dma_addr_t _risc_phys_start_addr; 287 288 unsigned int _audiorisc_size; 289 unsigned int _audiodata_buf_size; 290 __le32 *_audiodata_buf_virt_addr; 291 dma_addr_t _audiodata_buf_phys_addr; 292 char *_audiofilename; 293 u32 audio_upstream_riscbuf_size; 294 u32 audio_upstream_databuf_size; 295 int _audioframe_index; 296 struct workqueue_struct *_irq_audio_queues; 297 struct work_struct _audio_work_entry; 298 char *input_audiofilename; 299 300 /* V4l */ 301 spinlock_t slock; 302 303 /* Video Upstream */ 304 struct cx25821_video_out_data vid_out_data[2]; 305}; 306 307static inline struct cx25821_dev *get_cx25821(struct v4l2_device *v4l2_dev) 308{ 309 return container_of(v4l2_dev, struct cx25821_dev, v4l2_dev); 310} 311 312extern struct cx25821_board cx25821_boards[]; 313 314#define SRAM_CH00 0 /* Video A */ 315#define SRAM_CH01 1 /* Video B */ 316#define SRAM_CH02 2 /* Video C */ 317#define SRAM_CH03 3 /* Video D */ 318#define SRAM_CH04 4 /* Video E */ 319#define SRAM_CH05 5 /* Video F */ 320#define SRAM_CH06 6 /* Video G */ 321#define SRAM_CH07 7 /* Video H */ 322 323#define SRAM_CH08 8 /* Audio A */ 324#define SRAM_CH09 9 /* Video Upstream I */ 325#define SRAM_CH10 10 /* Video Upstream J */ 326#define SRAM_CH11 11 /* Audio Upstream AUD_CHANNEL_B */ 327 328#define VID_UPSTREAM_SRAM_CHANNEL_I SRAM_CH09 329#define VID_UPSTREAM_SRAM_CHANNEL_J SRAM_CH10 330#define AUDIO_UPSTREAM_SRAM_CHANNEL_B SRAM_CH11 331 332struct sram_channel { 333 char *name; 334 u32 i; 335 u32 cmds_start; 336 u32 ctrl_start; 337 u32 cdt; 338 u32 fifo_start; 339 u32 fifo_size; 340 u32 ptr1_reg; 341 u32 ptr2_reg; 342 u32 cnt1_reg; 343 u32 cnt2_reg; 344 u32 int_msk; 345 u32 int_stat; 346 u32 int_mstat; 347 u32 dma_ctl; 348 u32 gpcnt_ctl; 349 u32 gpcnt; 350 u32 aud_length; 351 u32 aud_cfg; 352 u32 fld_aud_fifo_en; 353 u32 fld_aud_risc_en; 354 355 /* For Upstream Video */ 356 u32 vid_fmt_ctl; 357 u32 vid_active_ctl1; 358 u32 vid_active_ctl2; 359 u32 vid_cdt_size; 360 361 u32 vip_ctl; 362 u32 pix_frmt; 363 u32 jumponly; 364 u32 irq_bit; 365}; 366 367extern const struct sram_channel cx25821_sram_channels[]; 368 369#define cx_read(reg) readl(dev->lmmio + ((reg)>>2)) 370#define cx_write(reg, value) writel((value), dev->lmmio + ((reg)>>2)) 371 372#define cx_andor(reg, mask, value) \ 373 writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\ 374 ((value) & (mask)), dev->lmmio+((reg)>>2)) 375 376#define cx_set(reg, bit) cx_andor((reg), (bit), (bit)) 377#define cx_clear(reg, bit) cx_andor((reg), (bit), 0) 378 379#define Set_GPIO_Bit(Bit) (1 << Bit) 380#define Clear_GPIO_Bit(Bit) (~(1 << Bit)) 381 382#define CX25821_ERR(fmt, args...) \ 383 pr_err("(%d): " fmt, dev->board, ##args) 384#define CX25821_WARN(fmt, args...) \ 385 pr_warn("(%d): " fmt, dev->board, ##args) 386#define CX25821_INFO(fmt, args...) \ 387 pr_info("(%d): " fmt, dev->board, ##args) 388 389extern int cx25821_i2c_register(struct cx25821_i2c *bus); 390extern int cx25821_i2c_read(struct cx25821_i2c *bus, u16 reg_addr, int *value); 391extern int cx25821_i2c_write(struct cx25821_i2c *bus, u16 reg_addr, int value); 392extern int cx25821_i2c_unregister(struct cx25821_i2c *bus); 393extern void cx25821_gpio_init(struct cx25821_dev *dev); 394extern void cx25821_set_gpiopin_direction(struct cx25821_dev *dev, 395 int pin_number, int pin_logic_value); 396 397extern int medusa_video_init(struct cx25821_dev *dev); 398extern int medusa_set_videostandard(struct cx25821_dev *dev); 399extern void medusa_set_resolution(struct cx25821_dev *dev, int width, 400 int decoder_select); 401extern int medusa_set_brightness(struct cx25821_dev *dev, int brightness, 402 int decoder); 403extern int medusa_set_contrast(struct cx25821_dev *dev, int contrast, 404 int decoder); 405extern int medusa_set_hue(struct cx25821_dev *dev, int hue, int decoder); 406extern int medusa_set_saturation(struct cx25821_dev *dev, int saturation, 407 int decoder); 408 409extern int cx25821_sram_channel_setup(struct cx25821_dev *dev, 410 const struct sram_channel *ch, unsigned int bpl, 411 u32 risc); 412 413extern int cx25821_riscmem_alloc(struct pci_dev *pci, 414 struct cx25821_riscmem *risc, 415 unsigned int size); 416extern int cx25821_risc_buffer(struct pci_dev *pci, struct cx25821_riscmem *risc, 417 struct scatterlist *sglist, 418 unsigned int top_offset, 419 unsigned int bottom_offset, 420 unsigned int bpl, 421 unsigned int padding, unsigned int lines); 422extern int cx25821_risc_databuffer_audio(struct pci_dev *pci, 423 struct cx25821_riscmem *risc, 424 struct scatterlist *sglist, 425 unsigned int bpl, 426 unsigned int lines, unsigned int lpi); 427extern void cx25821_free_buffer(struct cx25821_dev *dev, 428 struct cx25821_buffer *buf); 429extern void cx25821_sram_channel_dump(struct cx25821_dev *dev, 430 const struct sram_channel *ch); 431extern void cx25821_sram_channel_dump_audio(struct cx25821_dev *dev, 432 const struct sram_channel *ch); 433 434extern struct cx25821_dev *cx25821_dev_get(struct pci_dev *pci); 435extern void cx25821_print_irqbits(char *name, char *tag, char **strings, 436 int len, u32 bits, u32 mask); 437extern void cx25821_dev_unregister(struct cx25821_dev *dev); 438extern int cx25821_sram_channel_setup_audio(struct cx25821_dev *dev, 439 const struct sram_channel *ch, 440 unsigned int bpl, u32 risc); 441 442extern int cx25821_vidupstream_init(struct cx25821_channel *chan, int pixel_format); 443extern int cx25821_audio_upstream_init(struct cx25821_dev *dev, 444 int channel_select); 445extern int cx25821_write_frame(struct cx25821_channel *chan, 446 const char __user *data, size_t count); 447extern void cx25821_free_mem_upstream(struct cx25821_channel *chan); 448extern void cx25821_free_mem_upstream_audio(struct cx25821_dev *dev); 449extern void cx25821_stop_upstream_video(struct cx25821_channel *chan); 450extern void cx25821_stop_upstream_audio(struct cx25821_dev *dev); 451extern int cx25821_sram_channel_setup_upstream(struct cx25821_dev *dev, 452 const struct sram_channel *ch, 453 unsigned int bpl, u32 risc); 454extern void cx25821_set_pixel_format(struct cx25821_dev *dev, int channel, 455 u32 format); 456 457#endif 458