xref: /openbmc/linux/drivers/media/pci/bt8xx/bttvp.h (revision b7ec3212)
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 
4     bttv - Bt848 frame grabber driver
5 
6     bttv's *private* header file  --  nobody other than bttv itself
7     should ever include this file.
8 
9     (c) 2000-2002 Gerd Knorr <kraxel@bytesex.org>
10 
11 */
12 
13 #ifndef _BTTVP_H_
14 #define _BTTVP_H_
15 
16 #include <linux/types.h>
17 #include <linux/wait.h>
18 #include <linux/i2c.h>
19 #include <linux/i2c-algo-bit.h>
20 #include <linux/pci.h>
21 #include <linux/input.h>
22 #include <linux/mutex.h>
23 #include <linux/scatterlist.h>
24 #include <linux/device.h>
25 #include <asm/io.h>
26 #include <media/v4l2-common.h>
27 #include <media/v4l2-ctrls.h>
28 #include <media/v4l2-fh.h>
29 #include <media/videobuf2-dma-sg.h>
30 #include <media/tveeprom.h>
31 #include <media/rc-core.h>
32 #include <media/i2c/ir-kbd-i2c.h>
33 #include <media/drv-intf/tea575x.h>
34 
35 #include "bt848.h"
36 #include "bttv.h"
37 #include "btcx-risc.h"
38 
39 #ifdef __KERNEL__
40 
41 #define FORMAT_FLAGS_DITHER       0x01
42 #define FORMAT_FLAGS_PACKED       0x02
43 #define FORMAT_FLAGS_PLANAR       0x04
44 #define FORMAT_FLAGS_RAW          0x08
45 #define FORMAT_FLAGS_CrCb         0x10
46 
47 #define RISC_SLOT_O_VBI        4
48 #define RISC_SLOT_O_FIELD      6
49 #define RISC_SLOT_E_VBI       10
50 #define RISC_SLOT_E_FIELD     12
51 #define RISC_SLOT_LOOP        14
52 
53 #define RESOURCE_VIDEO_STREAM  2
54 #define RESOURCE_VBI           4
55 #define RESOURCE_VIDEO_READ    8
56 
57 #define RAW_LINES            640
58 #define RAW_BPL             1024
59 
60 #define UNSET (-1U)
61 
62 /* Min. value in VDELAY register. */
63 #define MIN_VDELAY 2
64 /* Even to get Cb first, odd for Cr. */
65 #define MAX_HDELAY (0x3FF & -2)
66 /* Limits scaled width, which must be a multiple of 4. */
67 #define MAX_HACTIVE (0x3FF & -4)
68 
69 #define BTTV_NORMS    (\
70 		V4L2_STD_PAL    | V4L2_STD_PAL_N | \
71 		V4L2_STD_PAL_Nc | V4L2_STD_SECAM | \
72 		V4L2_STD_NTSC   | V4L2_STD_PAL_M | \
73 		V4L2_STD_PAL_60)
74 /* ---------------------------------------------------------- */
75 
76 struct bttv_tvnorm {
77 	int   v4l2_id;
78 	char  *name;
79 	u32   Fsc;
80 	u16   swidth, sheight; /* scaled standard width, height */
81 	u16   totalwidth;
82 	u8    adelay, bdelay, iform;
83 	u32   scaledtwidth;
84 	u16   hdelayx1, hactivex1;
85 	u16   vdelay;
86 	u8    vbipack;
87 	u16   vtotal;
88 	int   sram;
89 	/* ITU-R frame line number of the first VBI line we can
90 	   capture, of the first and second field. The last possible line
91 	   is determined by cropcap.bounds. */
92 	u16   vbistart[2];
93 	/* Horizontally this counts fCLKx1 samples following the leading
94 	   edge of the horizontal sync pulse, vertically ITU-R frame line
95 	   numbers of the first field times two (2, 4, 6, ... 524 or 624). */
96 	struct v4l2_cropcap cropcap;
97 };
98 extern const struct bttv_tvnorm bttv_tvnorms[];
99 
100 struct bttv_format {
101 	int  fourcc;          /* video4linux 2      */
102 	int  btformat;        /* BT848_COLOR_FMT_*  */
103 	int  btswap;          /* BT848_COLOR_CTL_*  */
104 	int  depth;           /* bit/pixel          */
105 	int  flags;
106 	int  hshift,vshift;   /* for planar modes   */
107 };
108 
109 struct bttv_ir {
110 	struct rc_dev           *dev;
111 	struct bttv		*btv;
112 	struct timer_list       timer;
113 
114 	char                    name[32];
115 	char                    phys[32];
116 
117 	/* Usual gpio signalling */
118 	u32                     mask_keycode;
119 	u32                     mask_keydown;
120 	u32                     mask_keyup;
121 	u32                     polling;
122 	u32                     last_gpio;
123 	int                     shift_by;
124 	int                     rc5_remote_gap;
125 
126 	/* RC5 gpio */
127 	bool			rc5_gpio;   /* Is RC5 legacy GPIO enabled? */
128 	u32                     last_bit;   /* last raw bit seen */
129 	u32                     code;       /* raw code under construction */
130 	ktime_t						base_time;  /* time of last seen code */
131 	bool                    active;     /* building raw code */
132 };
133 
134 
135 /* ---------------------------------------------------------- */
136 
137 struct bttv_geometry {
138 	u8  vtc,crop,comb;
139 	u16 width,hscale,hdelay;
140 	u16 sheight,vscale,vdelay,vtotal;
141 };
142 
143 struct bttv_buffer {
144 	/* common v4l buffer stuff -- must be first */
145 	struct vb2_v4l2_buffer vbuf;
146 	struct list_head list;
147 
148 	/* bttv specific */
149 	int                        btformat;
150 	int                        btswap;
151 	struct bttv_geometry       geo;
152 	struct btcx_riscmem        top;
153 	struct btcx_riscmem        bottom;
154 };
155 
156 struct bttv_buffer_set {
157 	struct bttv_buffer     *top;       /* top field buffer    */
158 	struct bttv_buffer     *bottom;    /* bottom field buffer */
159 	unsigned int           top_irq;
160 	unsigned int           frame_irq;
161 };
162 
163 struct bttv_vbi_fmt {
164 	struct v4l2_vbi_format fmt;
165 
166 	/* fmt.start[] and count[] refer to this video standard. */
167 	const struct bttv_tvnorm *tvnorm;
168 
169 	/* Earliest possible start of video capturing with this
170 	   v4l2_vbi_format, in struct bttv_crop.rect units. */
171 	__s32                  end;
172 };
173 
174 /* bttv-vbi.c */
175 extern const struct vb2_ops bttv_vbi_qops;
176 
177 void bttv_vbi_fmt_reset(struct bttv_vbi_fmt *f, unsigned int norm);
178 
179 struct bttv_crop {
180 	/* A cropping rectangle in struct bttv_tvnorm.cropcap units. */
181 	struct v4l2_rect       rect;
182 
183 	/* Scaled image size limits with this crop rect. Divide
184 	   max_height, but not min_height, by two when capturing
185 	   single fields. See also bttv_crop_reset() and
186 	   bttv_crop_adjust() in bttv-driver.c. */
187 	__s32                  min_scaled_width;
188 	__s32                  min_scaled_height;
189 	__s32                  max_scaled_width;
190 	__s32                  max_scaled_height;
191 };
192 
193 /* ---------------------------------------------------------- */
194 /* bttv-risc.c                                                */
195 
196 /* risc code generators - capture */
197 int bttv_risc_packed(struct bttv *btv, struct btcx_riscmem *risc,
198 		     struct scatterlist *sglist,
199 		     unsigned int offset, unsigned int bpl,
200 		     unsigned int pitch, unsigned int skip_lines,
201 		     unsigned int store_lines);
202 
203 /* control dma register + risc main loop */
204 void bttv_set_dma(struct bttv *btv, int override);
205 int bttv_risc_init_main(struct bttv *btv);
206 int bttv_risc_hook(struct bttv *btv, int slot, struct btcx_riscmem *risc,
207 		   int irqflags);
208 
209 /* capture buffer handling */
210 int bttv_buffer_risc(struct bttv *btv, struct bttv_buffer *buf);
211 int bttv_buffer_activate_video(struct bttv *btv,
212 			       struct bttv_buffer_set *set);
213 int bttv_buffer_risc_vbi(struct bttv *btv, struct bttv_buffer *buf);
214 int bttv_buffer_activate_vbi(struct bttv *btv,
215 			     struct bttv_buffer *vbi);
216 
217 /* ---------------------------------------------------------- */
218 /* bttv-vbi.c                                                 */
219 
220 /*
221  * 2048 for compatibility with earlier driver versions. The driver really
222  * stores 1024 + tvnorm->vbipack * 4 samples per line in the buffer. Note
223  * tvnorm->vbipack is <= 0xFF (limit of VBIPACK_LO + HI is 0x1FF DWORDs) and
224  * VBI read()s store a frame counter in the last four bytes of the VBI image.
225  */
226 #define VBI_BPL 2048
227 
228 #define VBI_DEFLINES 16
229 
230 int bttv_try_fmt_vbi_cap(struct file *file, void *fh, struct v4l2_format *f);
231 int bttv_g_fmt_vbi_cap(struct file *file, void *fh, struct v4l2_format *f);
232 int bttv_s_fmt_vbi_cap(struct file *file, void *fh, struct v4l2_format *f);
233 
234 /* ---------------------------------------------------------- */
235 /* bttv-gpio.c */
236 
237 extern struct bus_type bttv_sub_bus_type;
238 int bttv_sub_add_device(struct bttv_core *core, char *name);
239 int bttv_sub_del_devices(struct bttv_core *core);
240 
241 /* ---------------------------------------------------------- */
242 /* bttv-input.c                                               */
243 
244 extern void init_bttv_i2c_ir(struct bttv *btv);
245 
246 /* ---------------------------------------------------------- */
247 /* bttv-i2c.c                                                 */
248 extern int init_bttv_i2c(struct bttv *btv);
249 extern int fini_bttv_i2c(struct bttv *btv);
250 
251 /* ---------------------------------------------------------- */
252 /* bttv-driver.c                                              */
253 
254 /* insmod options */
255 extern unsigned int bttv_verbose;
256 extern unsigned int bttv_debug;
257 extern unsigned int bttv_gpio;
258 int check_alloc_btres_lock(struct bttv *btv, int bit);
259 void free_btres_lock(struct bttv *btv, int bits);
260 extern void bttv_gpio_tracking(struct bttv *btv, char *comment);
261 
262 #define dprintk(fmt, ...)			\
263 do {						\
264 	if (bttv_debug >= 1)			\
265 		pr_debug(fmt, ##__VA_ARGS__);	\
266 } while (0)
267 #define dprintk_cont(fmt, ...)			\
268 do {						\
269 	if (bttv_debug >= 1)			\
270 		pr_cont(fmt, ##__VA_ARGS__);	\
271 } while (0)
272 #define d2printk(fmt, ...)			\
273 do {						\
274 	if (bttv_debug >= 2)			\
275 		printk(fmt, ##__VA_ARGS__);	\
276 } while (0)
277 
278 #define BTTV_MAX_FBUF   0x208000
279 #define BTTV_TIMEOUT    msecs_to_jiffies(500)    /* 0.5 seconds */
280 #define BTTV_FREE_IDLE  msecs_to_jiffies(1000)   /* one second */
281 
282 
283 struct bttv_pll_info {
284 	unsigned int pll_ifreq;    /* PLL input frequency        */
285 	unsigned int pll_ofreq;    /* PLL output frequency       */
286 	unsigned int pll_crystal;  /* Crystal used for input     */
287 	unsigned int pll_current;  /* Currently programmed ofreq */
288 };
289 
290 /* for gpio-connected remote control */
291 struct bttv_input {
292 	struct input_dev      *dev;
293 	char                  name[32];
294 	char                  phys[32];
295 	u32                   mask_keycode;
296 	u32                   mask_keydown;
297 };
298 
299 struct bttv_suspend_state {
300 	u32  gpio_enable;
301 	u32  gpio_data;
302 	int  disabled;
303 	int  loop_irq;
304 	struct bttv_buffer_set video;
305 	struct bttv_buffer     *vbi;
306 };
307 
308 struct bttv_tea575x_gpio {
309 	u8 data, clk, wren, most;
310 };
311 
312 struct bttv {
313 	struct bttv_core c;
314 
315 	/* pci device config */
316 	unsigned short id;
317 	unsigned char revision;
318 	unsigned char __iomem *bt848_mmio;   /* pointer to mmio */
319 
320 	/* card configuration info */
321 	unsigned int cardid;   /* pci subsystem id (bt878 based ones) */
322 	unsigned int tuner_type;  /* tuner chip type */
323 	unsigned int tda9887_conf;
324 	unsigned int svhs, dig;
325 	unsigned int has_saa6588:1;
326 	struct bttv_pll_info pll;
327 	int triton1;
328 	int gpioirq;
329 
330 	int use_i2c_hw;
331 
332 	/* old gpio interface */
333 	int shutdown;
334 
335 	void (*volume_gpio)(struct bttv *btv, __u16 volume);
336 	void (*audio_mode_gpio)(struct bttv *btv, struct v4l2_tuner *tuner, int set);
337 
338 	/* new gpio interface */
339 	spinlock_t gpio_lock;
340 
341 	/* i2c layer */
342 	struct i2c_algo_bit_data   i2c_algo;
343 	struct i2c_client          i2c_client;
344 	int                        i2c_state, i2c_rc;
345 	int                        i2c_done;
346 	wait_queue_head_t          i2c_queue;
347 	struct v4l2_subdev	  *sd_msp34xx;
348 	struct v4l2_subdev	  *sd_tvaudio;
349 	struct v4l2_subdev	  *sd_tda7432;
350 
351 	/* video4linux (1) */
352 	struct video_device video_dev;
353 	struct video_device radio_dev;
354 	struct video_device vbi_dev;
355 
356 	/* controls */
357 	struct v4l2_ctrl_handler   ctrl_handler;
358 	struct v4l2_ctrl_handler   radio_ctrl_handler;
359 
360 	/* infrared remote */
361 	int has_remote;
362 	struct bttv_ir *remote;
363 
364 	/* I2C remote data */
365 	struct IR_i2c_init_data    init_data;
366 
367 	/* locking */
368 	spinlock_t s_lock;
369 	struct mutex lock;
370 	int resources;
371 
372 	/* video state */
373 	unsigned int input;
374 	unsigned int audio_input;
375 	unsigned int mute;
376 	unsigned long tv_freq;
377 	unsigned int tvnorm;
378 	v4l2_std_id std;
379 	int hue, contrast, bright, saturation;
380 	struct v4l2_framebuffer fbuf;
381 	__u32 field_count;
382 
383 	/* various options */
384 	int opt_combfilter;
385 	int opt_automute;
386 	int opt_vcr_hack;
387 	int opt_uv_ratio;
388 
389 	/* radio data/state */
390 	int has_radio;
391 	int has_radio_tuner;
392 	int radio_user;
393 	int radio_uses_msp_demodulator;
394 	unsigned long radio_freq;
395 
396 	/* miro/pinnacle + Aimslab VHX
397 	   philips matchbox (tea5757 radio tuner) support */
398 	int has_tea575x;
399 	struct bttv_tea575x_gpio tea_gpio;
400 	struct snd_tea575x tea;
401 
402 	/* ISA stuff (Terratec Active Radio Upgrade) */
403 	int mbox_ior;
404 	int mbox_iow;
405 	int mbox_csel;
406 
407 	/* switch status for multi-controller cards */
408 	char sw_status[4];
409 
410 	/* risc memory management data
411 	   - must acquire s_lock before changing these
412 	   - only the irq handler is supported to touch top + bottom + vcurr */
413 	struct btcx_riscmem     main;
414 	struct list_head        capture;    /* video capture queue */
415 	struct list_head        vcapture;   /* vbi capture queue   */
416 	struct bttv_buffer_set  curr;       /* active buffers      */
417 	struct bttv_buffer      *cvbi;      /* active vbi buffer   */
418 	int                     loop_irq;
419 	int                     new_input;
420 
421 	unsigned long dma_on;
422 	struct timer_list timeout;
423 	struct bttv_suspend_state state;
424 
425 	/* stats */
426 	unsigned int errors;
427 	unsigned int framedrop;
428 	unsigned int irq_total;
429 	unsigned int irq_me;
430 
431 	unsigned int users;
432 	struct v4l2_fh fh;
433 	enum v4l2_buf_type type;
434 
435 	enum v4l2_field field;
436 	int field_last;
437 
438 	/* video capture */
439 	struct vb2_queue capq;
440 	const struct bttv_format *fmt;
441 	int width;
442 	int height;
443 
444 	/* vbi capture */
445 	struct vb2_queue vbiq;
446 	struct bttv_vbi_fmt vbi_fmt;
447 	unsigned int vbi_count[2];
448 
449 	/* Application called VIDIOC_S_SELECTION. */
450 	int do_crop;
451 
452 	/* used to make dvb-bt8xx autoloadable */
453 	struct work_struct request_module_wk;
454 
455 	/* Default (0) and current (1) video capturing
456 	   cropping parameters in bttv_tvnorm.cropcap units. Protected
457 	   by bttv.lock. */
458 	struct bttv_crop crop[2];
459 
460 	/* Earliest possible start of video capturing in
461 	   bttv_tvnorm.cropcap line units. Set by check_alloc_btres()
462 	   and free_btres(). Protected by bttv.lock. */
463 	__s32			vbi_end;
464 
465 	/* Latest possible end of VBI capturing (= crop[x].rect.top when
466 	   VIDEO_RESOURCES are locked). Set by check_alloc_btres()
467 	   and free_btres(). Protected by bttv.lock. */
468 	__s32			crop_start;
469 };
470 
to_bttv(struct v4l2_device * v4l2_dev)471 static inline struct bttv *to_bttv(struct v4l2_device *v4l2_dev)
472 {
473 	return container_of(v4l2_dev, struct bttv, c.v4l2_dev);
474 }
475 
476 /* our devices */
477 #define BTTV_MAX 32
478 extern unsigned int bttv_num;
479 extern struct bttv *bttvs[BTTV_MAX];
480 
bttv_muxsel(const struct bttv * btv,unsigned int input)481 static inline unsigned int bttv_muxsel(const struct bttv *btv,
482 				       unsigned int input)
483 {
484 	return (bttv_tvcards[btv->c.type].muxsel >> (input * 2)) & 3;
485 }
486 
487 #endif
488 
489 void init_irqreg(struct bttv *btv);
490 
491 #define btwrite(dat,adr)    writel((dat), btv->bt848_mmio+(adr))
492 #define btread(adr)         readl(btv->bt848_mmio+(adr))
493 
494 #define btand(dat,adr)      btwrite((dat) & btread(adr), adr)
495 #define btor(dat,adr)       btwrite((dat) | btread(adr), adr)
496 #define btaor(dat,mask,adr) btwrite((dat) | ((mask) & btread(adr)), adr)
497 
498 #endif /* _BTTVP_H_ */
499