2 * Driver for the Conexant CX25821 PCIe bridge
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
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.
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
17 * GNU General Public License for more details.
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.
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>
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>
39 #include "cx25821-reg.h"
40 #include "cx25821-medusa-reg.h"
41 #include "cx25821-sram.h"
42 #include "cx25821-audio.h"
44 #include <linux/version.h>
45 #include <linux/mutex.h>
47 #define CX25821_VERSION_CODE KERNEL_VERSION(0, 0, 106)
50 #define NO_SYNC_LINE (-1U)
52 #define CX25821_MAXBOARDS 2
54 #define LINE_SIZE_D1 1440
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
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
77 #define BUFFER_TIMEOUT (HZ) /* 0.5 seconds */
79 #define UNKNOWN_BOARD 0
80 #define CX25821_BOARD 1
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 | \
89 #define CX25821_BOARD_CONEXANT_ATHENA10 1
90 #define MAX_VID_CHANNEL_NUM 12
93 * Maximum capture-only channels. This can go away once video/audio output
94 * is fully supported in this driver.
96 #define MAX_VID_CAP_CHANNEL_NUM 10
98 #define VID_CHANNEL_NUM 8
102 u32 fourcc; /* v4l2 format id */
108 struct cx25821_tvnorm {
115 enum cx25821_src_sel_type {
116 CX25821_SRC_SEL_EXT_656_VIDEO = 0,
117 CX25821_SRC_SEL_PARALLEL_MPEG_VIDEO
120 struct cx25821_riscmem {
127 /* buffer for one video frame */
128 struct cx25821_buffer {
129 /* common v4l buffer stuff -- must be first */
130 struct vb2_buffer vb;
131 struct list_head queue;
133 /* cx25821 specific */
135 struct cx25821_riscmem risc;
136 const struct cx25821_fmt *fmt;
140 CX25821_UNDEFINED = 0,
145 struct cx25821_board {
155 struct cx25821_dev *dev;
160 struct i2c_adapter i2c_adap;
161 struct i2c_client i2c_client;
164 /* cx25821 registers used for raw addess */
173 struct cx25821_dmaqueue {
174 struct list_head active;
180 struct cx25821_channel;
182 struct cx25821_video_out_data {
183 struct cx25821_channel *chan;
192 unsigned int _risc_size;
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;
199 unsigned int _data_buf_size;
200 __le32 *_data_buf_virt_addr;
201 dma_addr_t _data_buf_phys_addr;
203 u32 upstream_riscbuf_size;
204 u32 upstream_databuf_size;
209 wait_queue_head_t waitq;
212 struct cx25821_channel {
214 struct cx25821_dev *dev;
216 struct v4l2_ctrl_handler hdl;
218 struct video_device vdev;
219 struct cx25821_dmaqueue dma_vidq;
220 struct vb2_queue vidq;
222 const struct sram_channel *sram_channels;
224 const struct cx25821_fmt *fmt;
226 unsigned int width, height;
228 int use_cif_resolution;
231 /* video output data for the video output channel */
232 struct cx25821_video_out_data *out;
238 struct v4l2_device v4l2_dev;
242 unsigned char pci_rev, pci_lat;
243 int pci_bus, pci_slot;
249 /* used by cx25821-alsa */
250 struct snd_card *card;
255 /* I2C adapters: Master 1 & 2 (External) & Master 3 (Internal only) */
256 struct cx25821_i2c i2c_bus[3];
261 struct cx25821_channel channels[MAX_VID_CHANNEL_NUM];
270 unsigned short _max_num_decoders;
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. */
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;
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;
304 struct cx25821_video_out_data vid_out_data[2];
307 static inline struct cx25821_dev *get_cx25821(struct v4l2_device *v4l2_dev)
309 return container_of(v4l2_dev, struct cx25821_dev, v4l2_dev);
312 extern struct cx25821_board cx25821_boards[];
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 */
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 */
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
332 struct sram_channel {
355 /* For Upstream Video */
367 extern const struct sram_channel cx25821_sram_channels[];
369 #define cx_read(reg) readl(dev->lmmio + ((reg)>>2))
370 #define cx_write(reg, value) writel((value), dev->lmmio + ((reg)>>2))
372 #define cx_andor(reg, mask, value) \
373 writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\
374 ((value) & (mask)), dev->lmmio+((reg)>>2))
376 #define cx_set(reg, bit) cx_andor((reg), (bit), (bit))
377 #define cx_clear(reg, bit) cx_andor((reg), (bit), 0)
379 #define Set_GPIO_Bit(Bit) (1 << Bit)
380 #define Clear_GPIO_Bit(Bit) (~(1 << Bit))
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)
389 extern int cx25821_i2c_register(struct cx25821_i2c *bus);
390 extern int cx25821_i2c_read(struct cx25821_i2c *bus, u16 reg_addr, int *value);
391 extern int cx25821_i2c_write(struct cx25821_i2c *bus, u16 reg_addr, int value);
392 extern int cx25821_i2c_unregister(struct cx25821_i2c *bus);
393 extern void cx25821_gpio_init(struct cx25821_dev *dev);
394 extern void cx25821_set_gpiopin_direction(struct cx25821_dev *dev,
395 int pin_number, int pin_logic_value);
397 extern int medusa_video_init(struct cx25821_dev *dev);
398 extern int medusa_set_videostandard(struct cx25821_dev *dev);
399 extern void medusa_set_resolution(struct cx25821_dev *dev, int width,
401 extern int medusa_set_brightness(struct cx25821_dev *dev, int brightness,
403 extern int medusa_set_contrast(struct cx25821_dev *dev, int contrast,
405 extern int medusa_set_hue(struct cx25821_dev *dev, int hue, int decoder);
406 extern int medusa_set_saturation(struct cx25821_dev *dev, int saturation,
409 extern int cx25821_sram_channel_setup(struct cx25821_dev *dev,
410 const struct sram_channel *ch, unsigned int bpl,
413 extern int cx25821_riscmem_alloc(struct pci_dev *pci,
414 struct cx25821_riscmem *risc,
416 extern 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,
421 unsigned int padding, unsigned int lines);
422 extern int cx25821_risc_databuffer_audio(struct pci_dev *pci,
423 struct cx25821_riscmem *risc,
424 struct scatterlist *sglist,
426 unsigned int lines, unsigned int lpi);
427 extern void cx25821_free_buffer(struct cx25821_dev *dev,
428 struct cx25821_buffer *buf);
429 extern void cx25821_sram_channel_dump(struct cx25821_dev *dev,
430 const struct sram_channel *ch);
431 extern void cx25821_sram_channel_dump_audio(struct cx25821_dev *dev,
432 const struct sram_channel *ch);
434 extern struct cx25821_dev *cx25821_dev_get(struct pci_dev *pci);
435 extern void cx25821_print_irqbits(char *name, char *tag, char **strings,
436 int len, u32 bits, u32 mask);
437 extern void cx25821_dev_unregister(struct cx25821_dev *dev);
438 extern int cx25821_sram_channel_setup_audio(struct cx25821_dev *dev,
439 const struct sram_channel *ch,
440 unsigned int bpl, u32 risc);
442 extern int cx25821_vidupstream_init(struct cx25821_channel *chan, int pixel_format);
443 extern int cx25821_audio_upstream_init(struct cx25821_dev *dev,
445 extern int cx25821_write_frame(struct cx25821_channel *chan,
446 const char __user *data, size_t count);
447 extern void cx25821_free_mem_upstream(struct cx25821_channel *chan);
448 extern void cx25821_free_mem_upstream_audio(struct cx25821_dev *dev);
449 extern void cx25821_stop_upstream_video(struct cx25821_channel *chan);
450 extern void cx25821_stop_upstream_audio(struct cx25821_dev *dev);
451 extern int cx25821_sram_channel_setup_upstream(struct cx25821_dev *dev,
452 const struct sram_channel *ch,
453 unsigned int bpl, u32 risc);
454 extern void cx25821_set_pixel_format(struct cx25821_dev *dev, int channel,