1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Driver for the Conexant CX25821 PCIe bridge
5 * Copyright (C) 2009 Conexant Systems Inc.
6 * Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
7 * Based on Steven Toth <stoth@linuxtv.org> cx23885 driver
13 #include <linux/pci.h>
14 #include <linux/i2c.h>
15 #include <linux/interrupt.h>
16 #include <linux/delay.h>
17 #include <linux/sched.h>
18 #include <linux/kdev_t.h>
20 #include <media/v4l2-common.h>
21 #include <media/v4l2-device.h>
22 #include <media/v4l2-ctrls.h>
23 #include <media/videobuf2-v4l2.h>
24 #include <media/videobuf2-dma-sg.h>
26 #include "cx25821-reg.h"
27 #include "cx25821-medusa-reg.h"
28 #include "cx25821-sram.h"
29 #include "cx25821-audio.h"
31 #include <linux/version.h>
32 #include <linux/mutex.h>
35 #define NO_SYNC_LINE (-1U)
37 #define CX25821_MAXBOARDS 2
39 #define LINE_SIZE_D1 1440
41 /* Number of decoders and encoders */
42 #define MAX_DECODERS 8
43 #define MAX_ENCODERS 2
44 #define QUAD_DECODERS 4
45 #define MAX_CAMERAS 16
47 /* Max number of inputs by card */
48 #define MAX_CX25821_INPUT 8
49 #define RESOURCE_VIDEO0 1
50 #define RESOURCE_VIDEO1 2
51 #define RESOURCE_VIDEO2 4
52 #define RESOURCE_VIDEO3 8
53 #define RESOURCE_VIDEO4 16
54 #define RESOURCE_VIDEO5 32
55 #define RESOURCE_VIDEO6 64
56 #define RESOURCE_VIDEO7 128
57 #define RESOURCE_VIDEO8 256
58 #define RESOURCE_VIDEO9 512
59 #define RESOURCE_VIDEO10 1024
60 #define RESOURCE_VIDEO11 2048
62 #define BUFFER_TIMEOUT (HZ) /* 0.5 seconds */
64 #define UNKNOWN_BOARD 0
65 #define CX25821_BOARD 1
67 /* Currently supported by the driver */
68 #define CX25821_NORMS (\
69 V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_JP | V4L2_STD_NTSC_M_KR | \
70 V4L2_STD_PAL_BG | V4L2_STD_PAL_DK | V4L2_STD_PAL_I | \
71 V4L2_STD_PAL_M | V4L2_STD_PAL_N | V4L2_STD_PAL_H | \
74 #define CX25821_BOARD_CONEXANT_ATHENA10 1
75 #define MAX_VID_CHANNEL_NUM 12
78 * Maximum capture-only channels. This can go away once video/audio output
79 * is fully supported in this driver.
81 #define MAX_VID_CAP_CHANNEL_NUM 10
83 #define VID_CHANNEL_NUM 8
87 u32 fourcc; /* v4l2 format id */
93 struct cx25821_tvnorm {
100 enum cx25821_src_sel_type {
101 CX25821_SRC_SEL_EXT_656_VIDEO = 0,
102 CX25821_SRC_SEL_PARALLEL_MPEG_VIDEO
105 struct cx25821_riscmem {
112 /* buffer for one video frame */
113 struct cx25821_buffer {
114 /* common v4l buffer stuff -- must be first */
115 struct vb2_v4l2_buffer vb;
116 struct list_head queue;
118 /* cx25821 specific */
120 struct cx25821_riscmem risc;
121 const struct cx25821_fmt *fmt;
125 CX25821_UNDEFINED = 0,
130 struct cx25821_board {
140 struct cx25821_dev *dev;
145 struct i2c_adapter i2c_adap;
146 struct i2c_client i2c_client;
149 /* cx25821 registers used for raw address */
158 struct cx25821_dmaqueue {
159 struct list_head active;
165 struct cx25821_channel;
167 struct cx25821_video_out_data {
168 struct cx25821_channel *chan;
177 unsigned int _risc_size;
179 __le32 *_dma_virt_start_addr;
180 __le32 *_dma_virt_addr;
181 dma_addr_t _dma_phys_addr;
182 dma_addr_t _dma_phys_start_addr;
184 unsigned int _data_buf_size;
185 __le32 *_data_buf_virt_addr;
186 dma_addr_t _data_buf_phys_addr;
188 u32 upstream_riscbuf_size;
189 u32 upstream_databuf_size;
194 wait_queue_head_t waitq;
197 struct cx25821_channel {
199 struct cx25821_dev *dev;
201 struct v4l2_ctrl_handler hdl;
203 struct video_device vdev;
204 struct cx25821_dmaqueue dma_vidq;
205 struct vb2_queue vidq;
207 const struct sram_channel *sram_channels;
209 const struct cx25821_fmt *fmt;
211 unsigned int width, height;
213 int use_cif_resolution;
216 /* video output data for the video output channel */
217 struct cx25821_video_out_data *out;
223 struct v4l2_device v4l2_dev;
227 unsigned char pci_rev, pci_lat;
228 int pci_bus, pci_slot;
234 /* used by cx25821-alsa */
235 struct snd_card *card;
239 /* I2C adapters: Master 1 & 2 (External) & Master 3 (Internal only) */
240 struct cx25821_i2c i2c_bus[3];
245 struct cx25821_channel channels[MAX_VID_CHANNEL_NUM];
254 unsigned short _max_num_decoders;
256 /* Analog Audio Upstream */
257 int _audio_is_running;
258 int _audiopixel_format;
259 int _is_first_audio_frame;
260 int _audiofile_status;
261 int _audio_lines_count;
262 int _audioframe_count;
263 int _audio_upstream_channel;
264 int _last_index_irq; /* The last interrupt index processed. */
266 __le32 *_risc_audio_jmp_addr;
267 __le32 *_risc_virt_start_addr;
268 __le32 *_risc_virt_addr;
269 dma_addr_t _risc_phys_addr;
270 dma_addr_t _risc_phys_start_addr;
272 unsigned int _audiorisc_size;
273 unsigned int _audiodata_buf_size;
274 __le32 *_audiodata_buf_virt_addr;
275 dma_addr_t _audiodata_buf_phys_addr;
276 char *_audiofilename;
277 u32 audio_upstream_riscbuf_size;
278 u32 audio_upstream_databuf_size;
279 int _audioframe_index;
280 struct work_struct _audio_work_entry;
281 char *input_audiofilename;
287 struct cx25821_video_out_data vid_out_data[2];
290 static inline struct cx25821_dev *get_cx25821(struct v4l2_device *v4l2_dev)
292 return container_of(v4l2_dev, struct cx25821_dev, v4l2_dev);
295 extern struct cx25821_board cx25821_boards[];
297 #define SRAM_CH00 0 /* Video A */
298 #define SRAM_CH01 1 /* Video B */
299 #define SRAM_CH02 2 /* Video C */
300 #define SRAM_CH03 3 /* Video D */
301 #define SRAM_CH04 4 /* Video E */
302 #define SRAM_CH05 5 /* Video F */
303 #define SRAM_CH06 6 /* Video G */
304 #define SRAM_CH07 7 /* Video H */
306 #define SRAM_CH08 8 /* Audio A */
307 #define SRAM_CH09 9 /* Video Upstream I */
308 #define SRAM_CH10 10 /* Video Upstream J */
309 #define SRAM_CH11 11 /* Audio Upstream AUD_CHANNEL_B */
311 #define VID_UPSTREAM_SRAM_CHANNEL_I SRAM_CH09
312 #define VID_UPSTREAM_SRAM_CHANNEL_J SRAM_CH10
313 #define AUDIO_UPSTREAM_SRAM_CHANNEL_B SRAM_CH11
315 struct sram_channel {
338 /* For Upstream Video */
350 extern const struct sram_channel cx25821_sram_channels[];
352 #define cx_read(reg) readl(dev->lmmio + ((reg)>>2))
353 #define cx_write(reg, value) writel((value), dev->lmmio + ((reg)>>2))
355 #define cx_andor(reg, mask, value) \
356 writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\
357 ((value) & (mask)), dev->lmmio+((reg)>>2))
359 #define cx_set(reg, bit) cx_andor((reg), (bit), (bit))
360 #define cx_clear(reg, bit) cx_andor((reg), (bit), 0)
362 #define Set_GPIO_Bit(Bit) (1 << Bit)
363 #define Clear_GPIO_Bit(Bit) (~(1 << Bit))
365 #define CX25821_ERR(fmt, args...) \
366 pr_err("(%d): " fmt, dev->board, ##args)
367 #define CX25821_WARN(fmt, args...) \
368 pr_warn("(%d): " fmt, dev->board, ##args)
369 #define CX25821_INFO(fmt, args...) \
370 pr_info("(%d): " fmt, dev->board, ##args)
372 extern int cx25821_i2c_register(struct cx25821_i2c *bus);
373 extern int cx25821_i2c_read(struct cx25821_i2c *bus, u16 reg_addr, int *value);
374 extern int cx25821_i2c_write(struct cx25821_i2c *bus, u16 reg_addr, int value);
375 extern int cx25821_i2c_unregister(struct cx25821_i2c *bus);
376 extern void cx25821_gpio_init(struct cx25821_dev *dev);
377 extern void cx25821_set_gpiopin_direction(struct cx25821_dev *dev,
378 int pin_number, int pin_logic_value);
380 extern int medusa_video_init(struct cx25821_dev *dev);
381 extern int medusa_set_videostandard(struct cx25821_dev *dev);
382 extern void medusa_set_resolution(struct cx25821_dev *dev, int width,
384 extern int medusa_set_brightness(struct cx25821_dev *dev, int brightness,
386 extern int medusa_set_contrast(struct cx25821_dev *dev, int contrast,
388 extern int medusa_set_hue(struct cx25821_dev *dev, int hue, int decoder);
389 extern int medusa_set_saturation(struct cx25821_dev *dev, int saturation,
392 extern int cx25821_sram_channel_setup(struct cx25821_dev *dev,
393 const struct sram_channel *ch, unsigned int bpl,
396 extern int cx25821_riscmem_alloc(struct pci_dev *pci,
397 struct cx25821_riscmem *risc,
399 extern int cx25821_risc_buffer(struct pci_dev *pci, struct cx25821_riscmem *risc,
400 struct scatterlist *sglist,
401 unsigned int top_offset,
402 unsigned int bottom_offset,
404 unsigned int padding, unsigned int lines);
405 extern int cx25821_risc_databuffer_audio(struct pci_dev *pci,
406 struct cx25821_riscmem *risc,
407 struct scatterlist *sglist,
409 unsigned int lines, unsigned int lpi);
410 extern void cx25821_free_buffer(struct cx25821_dev *dev,
411 struct cx25821_buffer *buf);
412 extern void cx25821_sram_channel_dump(struct cx25821_dev *dev,
413 const struct sram_channel *ch);
414 extern void cx25821_sram_channel_dump_audio(struct cx25821_dev *dev,
415 const struct sram_channel *ch);
417 extern struct cx25821_dev *cx25821_dev_get(struct pci_dev *pci);
418 extern void cx25821_print_irqbits(char *name, char *tag, char **strings,
419 int len, u32 bits, u32 mask);
420 extern void cx25821_dev_unregister(struct cx25821_dev *dev);
421 extern int cx25821_sram_channel_setup_audio(struct cx25821_dev *dev,
422 const struct sram_channel *ch,
423 unsigned int bpl, u32 risc);
425 extern void cx25821_set_pixel_format(struct cx25821_dev *dev, int channel,