1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  *  Driver for the Conexant CX25821 PCIe bridge
4  *
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
8  */
9 
10 #ifndef CX25821_H_
11 #define CX25821_H_
12 
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>
19 
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>
25 
26 #include "cx25821-reg.h"
27 #include "cx25821-medusa-reg.h"
28 #include "cx25821-sram.h"
29 #include "cx25821-audio.h"
30 
31 #include <linux/version.h>
32 #include <linux/mutex.h>
33 
34 #define UNSET (-1U)
35 #define NO_SYNC_LINE (-1U)
36 
37 #define CX25821_MAXBOARDS 2
38 
39 #define LINE_SIZE_D1    1440
40 
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
46 
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
61 
62 #define BUFFER_TIMEOUT     (HZ)	/* 0.5 seconds */
63 
64 #define UNKNOWN_BOARD        0
65 #define CX25821_BOARD        1
66 
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    | \
72 	V4L2_STD_PAL_Nc)
73 
74 #define CX25821_BOARD_CONEXANT_ATHENA10 1
75 #define MAX_VID_CHANNEL_NUM     12
76 
77 /*
78  * Maximum capture-only channels. This can go away once video/audio output
79  * is fully supported in this driver.
80  */
81 #define MAX_VID_CAP_CHANNEL_NUM     10
82 
83 #define VID_CHANNEL_NUM 8
84 
85 struct cx25821_fmt {
86 	char *name;
87 	u32 fourcc;		/* v4l2 format id */
88 	int depth;
89 	int flags;
90 	u32 cxformat;
91 };
92 
93 struct cx25821_tvnorm {
94 	char *name;
95 	v4l2_std_id id;
96 	u32 cxiformat;
97 	u32 cxoformat;
98 };
99 
100 enum cx25821_src_sel_type {
101 	CX25821_SRC_SEL_EXT_656_VIDEO = 0,
102 	CX25821_SRC_SEL_PARALLEL_MPEG_VIDEO
103 };
104 
105 struct cx25821_riscmem {
106 	unsigned int   size;
107 	__le32         *cpu;
108 	__le32         *jmp;
109 	dma_addr_t     dma;
110 };
111 
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;
117 
118 	/* cx25821 specific */
119 	unsigned int bpl;
120 	struct cx25821_riscmem risc;
121 	const struct cx25821_fmt *fmt;
122 };
123 
124 enum port {
125 	CX25821_UNDEFINED = 0,
126 	CX25821_RAW,
127 	CX25821_264
128 };
129 
130 struct cx25821_board {
131 	const char *name;
132 	enum port porta;
133 	enum port portb;
134 	enum port portc;
135 
136 	u32 clk_freq;
137 };
138 
139 struct cx25821_i2c {
140 	struct cx25821_dev *dev;
141 
142 	int nr;
143 
144 	/* i2c i/o */
145 	struct i2c_adapter i2c_adap;
146 	struct i2c_client i2c_client;
147 	u32 i2c_rc;
148 
149 	/* cx25821 registers used for raw address */
150 	u32 i2c_period;
151 	u32 reg_ctrl;
152 	u32 reg_stat;
153 	u32 reg_addr;
154 	u32 reg_rdata;
155 	u32 reg_wdata;
156 };
157 
158 struct cx25821_dmaqueue {
159 	struct list_head active;
160 	u32 count;
161 };
162 
163 struct cx25821_dev;
164 
165 struct cx25821_channel;
166 
167 struct cx25821_video_out_data {
168 	struct cx25821_channel *chan;
169 	int _line_size;
170 	int _prog_cnt;
171 	int _pixel_format;
172 	int _is_first_frame;
173 	int _is_running;
174 	int _file_status;
175 	int _lines_count;
176 	int _frame_count;
177 	unsigned int _risc_size;
178 
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;
183 
184 	unsigned int _data_buf_size;
185 	__le32 *_data_buf_virt_addr;
186 	dma_addr_t _data_buf_phys_addr;
187 
188 	u32 upstream_riscbuf_size;
189 	u32 upstream_databuf_size;
190 	int is_60hz;
191 	int _frame_index;
192 	int cur_frame_index;
193 	int curpos;
194 	wait_queue_head_t waitq;
195 };
196 
197 struct cx25821_channel {
198 	unsigned id;
199 	struct cx25821_dev *dev;
200 
201 	struct v4l2_ctrl_handler hdl;
202 
203 	struct video_device vdev;
204 	struct cx25821_dmaqueue dma_vidq;
205 	struct vb2_queue vidq;
206 
207 	const struct sram_channel *sram_channels;
208 
209 	const struct cx25821_fmt *fmt;
210 	unsigned field;
211 	unsigned int width, height;
212 	int pixel_formats;
213 	int use_cif_resolution;
214 	int cif_width;
215 
216 	/* video output data for the video output channel */
217 	struct cx25821_video_out_data *out;
218 };
219 
220 struct snd_card;
221 
222 struct cx25821_dev {
223 	struct v4l2_device v4l2_dev;
224 
225 	/* pci stuff */
226 	struct pci_dev *pci;
227 	unsigned char pci_rev, pci_lat;
228 	int pci_bus, pci_slot;
229 	u32 base_io_addr;
230 	u32 __iomem *lmmio;
231 	u8 __iomem *bmmio;
232 	int pci_irqmask;
233 	int hwrevision;
234 	/* used by cx25821-alsa */
235 	struct snd_card *card;
236 
237 	u32 clk_freq;
238 
239 	/* I2C adapters: Master 1 & 2 (External) & Master 3 (Internal only) */
240 	struct cx25821_i2c i2c_bus[3];
241 
242 	int nr;
243 	struct mutex lock;
244 
245 	struct cx25821_channel channels[MAX_VID_CHANNEL_NUM];
246 
247 	/* board details */
248 	unsigned int board;
249 	char name[32];
250 
251 	/* Analog video */
252 	unsigned int input;
253 	v4l2_std_id tvnorm;
254 	unsigned short _max_num_decoders;
255 
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. */
265 
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;
271 
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;
282 
283 	/* V4l */
284 	spinlock_t slock;
285 
286 	/* Video Upstream */
287 	struct cx25821_video_out_data vid_out_data[2];
288 };
289 
290 static inline struct cx25821_dev *get_cx25821(struct v4l2_device *v4l2_dev)
291 {
292 	return container_of(v4l2_dev, struct cx25821_dev, v4l2_dev);
293 }
294 
295 extern struct cx25821_board cx25821_boards[];
296 
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 */
305 
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 */
310 
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
314 
315 struct sram_channel {
316 	char *name;
317 	u32 i;
318 	u32 cmds_start;
319 	u32 ctrl_start;
320 	u32 cdt;
321 	u32 fifo_start;
322 	u32 fifo_size;
323 	u32 ptr1_reg;
324 	u32 ptr2_reg;
325 	u32 cnt1_reg;
326 	u32 cnt2_reg;
327 	u32 int_msk;
328 	u32 int_stat;
329 	u32 int_mstat;
330 	u32 dma_ctl;
331 	u32 gpcnt_ctl;
332 	u32 gpcnt;
333 	u32 aud_length;
334 	u32 aud_cfg;
335 	u32 fld_aud_fifo_en;
336 	u32 fld_aud_risc_en;
337 
338 	/* For Upstream Video */
339 	u32 vid_fmt_ctl;
340 	u32 vid_active_ctl1;
341 	u32 vid_active_ctl2;
342 	u32 vid_cdt_size;
343 
344 	u32 vip_ctl;
345 	u32 pix_frmt;
346 	u32 jumponly;
347 	u32 irq_bit;
348 };
349 
350 extern const struct sram_channel cx25821_sram_channels[];
351 
352 #define cx_read(reg)             readl(dev->lmmio + ((reg)>>2))
353 #define cx_write(reg, value)     writel((value), dev->lmmio + ((reg)>>2))
354 
355 #define cx_andor(reg, mask, value) \
356 	writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\
357 	((value) & (mask)), dev->lmmio+((reg)>>2))
358 
359 #define cx_set(reg, bit)          cx_andor((reg), (bit), (bit))
360 #define cx_clear(reg, bit)        cx_andor((reg), (bit), 0)
361 
362 #define Set_GPIO_Bit(Bit)                       (1 << Bit)
363 #define Clear_GPIO_Bit(Bit)                     (~(1 << Bit))
364 
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)
371 
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);
379 
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,
383 				  int decoder_select);
384 extern int medusa_set_brightness(struct cx25821_dev *dev, int brightness,
385 				 int decoder);
386 extern int medusa_set_contrast(struct cx25821_dev *dev, int contrast,
387 			       int decoder);
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,
390 				 int decoder);
391 
392 extern int cx25821_sram_channel_setup(struct cx25821_dev *dev,
393 				      const struct sram_channel *ch, unsigned int bpl,
394 				      u32 risc);
395 
396 extern int cx25821_riscmem_alloc(struct pci_dev *pci,
397 				 struct cx25821_riscmem *risc,
398 				 unsigned int size);
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,
403 			       unsigned int bpl,
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,
408 					 unsigned int bpl,
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);
416 
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);
424 
425 extern void cx25821_set_pixel_format(struct cx25821_dev *dev, int channel,
426 				     u32 format);
427 
428 #endif
429