Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | planb - PlanB frame grabber driver |
| 3 | |
| 4 | PlanB is used in the 7x00/8x00 series of PowerMacintosh |
| 5 | Computers as video input DMA controller. |
| 6 | |
| 7 | Copyright (C) 1998 Michel Lanners (mlan@cpu.lu) |
| 8 | |
| 9 | Based largely on the bttv driver by Ralph Metzler (rjkm@thp.uni-koeln.de) |
| 10 | |
| 11 | Additional debugging and coding by Takashi Oe (toe@unlserve.unl.edu) |
| 12 | |
| 13 | This program is free software; you can redistribute it and/or modify |
| 14 | it under the terms of the GNU General Public License as published by |
| 15 | the Free Software Foundation; either version 2 of the License, or |
| 16 | (at your option) any later version. |
| 17 | |
| 18 | This program is distributed in the hope that it will be useful, |
| 19 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | GNU General Public License for more details. |
| 22 | |
| 23 | You should have received a copy of the GNU General Public License |
| 24 | along with this program; if not, write to the Free Software |
| 25 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 26 | */ |
| 27 | |
| 28 | /* $Id: planb.c,v 1.18 1999/05/02 17:36:34 mlan Exp $ */ |
| 29 | |
| 30 | #include <linux/init.h> |
| 31 | #include <linux/errno.h> |
| 32 | #include <linux/module.h> |
| 33 | #include <linux/kernel.h> |
| 34 | #include <linux/major.h> |
| 35 | #include <linux/slab.h> |
| 36 | #include <linux/types.h> |
| 37 | #include <linux/pci.h> |
| 38 | #include <linux/delay.h> |
| 39 | #include <linux/vmalloc.h> |
| 40 | #include <linux/mm.h> |
| 41 | #include <linux/sched.h> |
| 42 | #include <linux/videodev.h> |
Mauro Carvalho Chehab | 5e87efa | 2006-06-05 10:26:32 -0300 | [diff] [blame] | 43 | #include <media/v4l2-common.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <linux/wait.h> |
| 45 | #include <asm/uaccess.h> |
| 46 | #include <asm/io.h> |
| 47 | #include <asm/prom.h> |
| 48 | #include <asm/dbdma.h> |
| 49 | #include <asm/pgtable.h> |
| 50 | #include <asm/page.h> |
| 51 | #include <asm/irq.h> |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 52 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | |
| 54 | #include "planb.h" |
| 55 | #include "saa7196.h" |
| 56 | |
| 57 | /* Would you mind for some ugly debugging? */ |
| 58 | #if 0 |
| 59 | #define DEBUG(x...) printk(KERN_DEBUG ## x) /* Debug driver */ |
| 60 | #else |
| 61 | #define DEBUG(x...) /* Don't debug driver */ |
| 62 | #endif |
| 63 | |
| 64 | #if 0 |
| 65 | #define IDEBUG(x...) printk(KERN_DEBUG ## x) /* Debug interrupt part */ |
| 66 | #else |
| 67 | #define IDEBUG(x...) /* Don't debug interrupt part */ |
| 68 | #endif |
| 69 | |
| 70 | /* Ever seen a Mac with more than 1 of these? */ |
| 71 | #define PLANB_MAX 1 |
| 72 | |
| 73 | static int planb_num; |
| 74 | static struct planb planbs[PLANB_MAX]; |
| 75 | static volatile struct planb_registers *planb_regs; |
| 76 | |
| 77 | static int def_norm = PLANB_DEF_NORM; /* default norm */ |
| 78 | static int video_nr = -1; |
| 79 | |
Eric Sesterhenn / snakebyte | 9b565eb | 2006-01-13 14:10:23 -0200 | [diff] [blame] | 80 | module_param(def_norm, int, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | MODULE_PARM_DESC(def_norm, "Default startup norm (0=PAL, 1=NTSC, 2=SECAM)"); |
Eric Sesterhenn / snakebyte | 9b565eb | 2006-01-13 14:10:23 -0200 | [diff] [blame] | 82 | module_param(video_nr, int, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | MODULE_LICENSE("GPL"); |
| 84 | |
| 85 | |
| 86 | /* ------------------ PlanB Exported Functions ------------------ */ |
| 87 | static long planb_write(struct video_device *, const char *, unsigned long, int); |
| 88 | static long planb_read(struct video_device *, char *, unsigned long, int); |
| 89 | static int planb_open(struct video_device *, int); |
| 90 | static void planb_close(struct video_device *); |
| 91 | static int planb_ioctl(struct video_device *, unsigned int, void *); |
| 92 | static int planb_init_done(struct video_device *); |
| 93 | static int planb_mmap(struct video_device *, const char *, unsigned long); |
| 94 | static void planb_irq(int, void *, struct pt_regs *); |
| 95 | static void release_planb(void); |
| 96 | int init_planbs(struct video_init *); |
| 97 | |
| 98 | /* ------------------ PlanB Internal Functions ------------------ */ |
| 99 | static int planb_prepare_open(struct planb *); |
| 100 | static void planb_prepare_close(struct planb *); |
| 101 | static void saa_write_reg(unsigned char, unsigned char); |
| 102 | static unsigned char saa_status(int, struct planb *); |
| 103 | static void saa_set(unsigned char, unsigned char, struct planb *); |
| 104 | static void saa_init_regs(struct planb *); |
| 105 | static int grabbuf_alloc(struct planb *); |
| 106 | static int vgrab(struct planb *, struct video_mmap *); |
| 107 | static void add_clip(struct planb *, struct video_clip *); |
| 108 | static void fill_cmd_buff(struct planb *); |
| 109 | static void cmd_buff(struct planb *); |
| 110 | static volatile struct dbdma_cmd *setup_grab_cmd(int, struct planb *); |
| 111 | static void overlay_start(struct planb *); |
| 112 | static void overlay_stop(struct planb *); |
| 113 | static inline void tab_cmd_dbdma(volatile struct dbdma_cmd *, unsigned short, |
| 114 | unsigned int); |
| 115 | static inline void tab_cmd_store(volatile struct dbdma_cmd *, unsigned int, |
| 116 | unsigned int); |
| 117 | static inline void tab_cmd_gen(volatile struct dbdma_cmd *, unsigned short, |
| 118 | unsigned short, unsigned int, unsigned int); |
| 119 | static int init_planb(struct planb *); |
| 120 | static int find_planb(void); |
| 121 | static void planb_pre_capture(int, int, struct planb *); |
| 122 | static volatile struct dbdma_cmd *cmd_geo_setup(volatile struct dbdma_cmd *, |
| 123 | int, int, int, int, int, struct planb *); |
| 124 | static inline void planb_dbdma_stop(volatile struct dbdma_regs *); |
| 125 | static unsigned int saa_geo_setup(int, int, int, int, struct planb *); |
| 126 | static inline int overlay_is_active(struct planb *); |
| 127 | |
| 128 | /*******************************/ |
| 129 | /* Memory management functions */ |
| 130 | /*******************************/ |
| 131 | |
| 132 | static int grabbuf_alloc(struct planb *pb) |
| 133 | { |
| 134 | int i, npage; |
| 135 | |
| 136 | npage = MAX_GBUFFERS * ((PLANB_MAX_FBUF / PAGE_SIZE + 1) |
| 137 | #ifndef PLANB_GSCANLINE |
| 138 | + MAX_LNUM |
| 139 | #endif /* PLANB_GSCANLINE */ |
| 140 | ); |
| 141 | if ((pb->rawbuf = (unsigned char**) kmalloc (npage |
| 142 | * sizeof(unsigned long), GFP_KERNEL)) == 0) |
| 143 | return -ENOMEM; |
| 144 | for (i = 0; i < npage; i++) { |
| 145 | pb->rawbuf[i] = (unsigned char *)__get_free_pages(GFP_KERNEL |
| 146 | |GFP_DMA, 0); |
| 147 | if (!pb->rawbuf[i]) |
| 148 | break; |
| 149 | SetPageReserved(virt_to_page(pb->rawbuf[i])); |
| 150 | } |
| 151 | if (i-- < npage) { |
| 152 | printk(KERN_DEBUG "PlanB: init_grab: grab buffer not allocated\n"); |
| 153 | for (; i > 0; i--) { |
| 154 | ClearPageReserved(virt_to_page(pb->rawbuf[i])); |
| 155 | free_pages((unsigned long)pb->rawbuf[i], 0); |
| 156 | } |
| 157 | kfree(pb->rawbuf); |
| 158 | return -ENOBUFS; |
| 159 | } |
| 160 | pb->rawbuf_size = npage; |
| 161 | return 0; |
| 162 | } |
| 163 | |
| 164 | /*****************************/ |
| 165 | /* Hardware access functions */ |
| 166 | /*****************************/ |
| 167 | |
| 168 | static void saa_write_reg(unsigned char addr, unsigned char val) |
| 169 | { |
| 170 | planb_regs->saa_addr = addr; eieio(); |
| 171 | planb_regs->saa_regval = val; eieio(); |
| 172 | return; |
| 173 | } |
| 174 | |
| 175 | /* return status byte 0 or 1: */ |
| 176 | static unsigned char saa_status(int byte, struct planb *pb) |
| 177 | { |
| 178 | saa_regs[pb->win.norm][SAA7196_STDC] = |
| 179 | (saa_regs[pb->win.norm][SAA7196_STDC] & ~2) | ((byte & 1) << 1); |
| 180 | saa_write_reg (SAA7196_STDC, saa_regs[pb->win.norm][SAA7196_STDC]); |
| 181 | |
| 182 | /* Let's wait 30msec for this one */ |
| 183 | msleep_interruptible(30); |
| 184 | |
| 185 | return (unsigned char)in_8 (&planb_regs->saa_status); |
| 186 | } |
| 187 | |
| 188 | static void saa_set(unsigned char addr, unsigned char val, struct planb *pb) |
| 189 | { |
| 190 | if(saa_regs[pb->win.norm][addr] != val) { |
| 191 | saa_regs[pb->win.norm][addr] = val; |
| 192 | saa_write_reg (addr, val); |
| 193 | } |
| 194 | return; |
| 195 | } |
| 196 | |
| 197 | static void saa_init_regs(struct planb *pb) |
| 198 | { |
| 199 | int i; |
| 200 | |
| 201 | for (i = 0; i < SAA7196_NUMREGS; i++) |
| 202 | saa_write_reg (i, saa_regs[pb->win.norm][i]); |
| 203 | } |
| 204 | |
| 205 | static unsigned int saa_geo_setup(int width, int height, int interlace, int bpp, |
| 206 | struct planb *pb) |
| 207 | { |
| 208 | int ht, norm = pb->win.norm; |
| 209 | |
| 210 | switch(bpp) { |
| 211 | case 2: |
| 212 | /* RGB555+a 1x16-bit + 16-bit transparent */ |
| 213 | saa_regs[norm][SAA7196_FMTS] &= ~0x3; |
| 214 | break; |
| 215 | case 1: |
| 216 | case 4: |
| 217 | /* RGB888 1x24-bit + 8-bit transparent */ |
| 218 | saa_regs[norm][SAA7196_FMTS] &= ~0x1; |
| 219 | saa_regs[norm][SAA7196_FMTS] |= 0x2; |
| 220 | break; |
| 221 | default: |
| 222 | return -EINVAL; |
| 223 | } |
| 224 | ht = (interlace ? height / 2 : height); |
| 225 | saa_regs[norm][SAA7196_OUTPIX] = (unsigned char) (width & 0x00ff); |
| 226 | saa_regs[norm][SAA7196_HFILT] = (saa_regs[norm][SAA7196_HFILT] & ~0x3) |
| 227 | | (width >> 8 & 0x3); |
| 228 | saa_regs[norm][SAA7196_OUTLINE] = (unsigned char) (ht & 0xff); |
| 229 | saa_regs[norm][SAA7196_VYP] = (saa_regs[norm][SAA7196_VYP] & ~0x3) |
| 230 | | (ht >> 8 & 0x3); |
| 231 | /* feed both fields if interlaced, or else feed only even fields */ |
| 232 | saa_regs[norm][SAA7196_FMTS] = (interlace) ? |
| 233 | (saa_regs[norm][SAA7196_FMTS] & ~0x60) |
| 234 | : (saa_regs[norm][SAA7196_FMTS] | 0x60); |
| 235 | /* transparent mode; extended format enabled */ |
| 236 | saa_regs[norm][SAA7196_DPATH] |= 0x3; |
| 237 | |
| 238 | return 0; |
| 239 | } |
| 240 | |
| 241 | /***************************/ |
| 242 | /* DBDMA support functions */ |
| 243 | /***************************/ |
| 244 | |
| 245 | static inline void planb_dbdma_restart(volatile struct dbdma_regs *ch) |
| 246 | { |
| 247 | out_le32(&ch->control, PLANB_CLR(RUN)); |
| 248 | out_le32(&ch->control, PLANB_SET(RUN|WAKE) | PLANB_CLR(PAUSE)); |
| 249 | } |
| 250 | |
| 251 | static inline void planb_dbdma_stop(volatile struct dbdma_regs *ch) |
| 252 | { |
| 253 | int i = 0; |
| 254 | |
| 255 | out_le32(&ch->control, PLANB_CLR(RUN) | PLANB_SET(FLUSH)); |
| 256 | while((in_le32(&ch->status) == (ACTIVE | FLUSH)) && (i < 999)) { |
| 257 | IDEBUG("PlanB: waiting for DMA to stop\n"); |
| 258 | i++; |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | static inline void tab_cmd_dbdma(volatile struct dbdma_cmd *ch, |
| 263 | unsigned short command, unsigned int cmd_dep) |
| 264 | { |
| 265 | st_le16(&ch->command, command); |
| 266 | st_le32(&ch->cmd_dep, cmd_dep); |
| 267 | } |
| 268 | |
| 269 | static inline void tab_cmd_store(volatile struct dbdma_cmd *ch, |
| 270 | unsigned int phy_addr, unsigned int cmd_dep) |
| 271 | { |
| 272 | st_le16(&ch->command, STORE_WORD | KEY_SYSTEM); |
| 273 | st_le16(&ch->req_count, 4); |
| 274 | st_le32(&ch->phy_addr, phy_addr); |
| 275 | st_le32(&ch->cmd_dep, cmd_dep); |
| 276 | } |
| 277 | |
| 278 | static inline void tab_cmd_gen(volatile struct dbdma_cmd *ch, |
| 279 | unsigned short command, unsigned short req_count, |
| 280 | unsigned int phy_addr, unsigned int cmd_dep) |
| 281 | { |
| 282 | st_le16(&ch->command, command); |
| 283 | st_le16(&ch->req_count, req_count); |
| 284 | st_le32(&ch->phy_addr, phy_addr); |
| 285 | st_le32(&ch->cmd_dep, cmd_dep); |
| 286 | } |
| 287 | |
| 288 | static volatile struct dbdma_cmd *cmd_geo_setup( |
| 289 | volatile struct dbdma_cmd *c1, int width, int height, int interlace, |
| 290 | int bpp, int clip, struct planb *pb) |
| 291 | { |
| 292 | int norm = pb->win.norm; |
| 293 | |
| 294 | if((saa_geo_setup(width, height, interlace, bpp, pb)) != 0) |
| 295 | return (volatile struct dbdma_cmd *)NULL; |
| 296 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr), |
| 297 | SAA7196_FMTS); |
| 298 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval), |
| 299 | saa_regs[norm][SAA7196_FMTS]); |
| 300 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr), |
| 301 | SAA7196_DPATH); |
| 302 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval), |
| 303 | saa_regs[norm][SAA7196_DPATH]); |
| 304 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->even), |
| 305 | bpp | ((clip)? PLANB_CLIPMASK: 0)); |
| 306 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->odd), |
| 307 | bpp | ((clip)? PLANB_CLIPMASK: 0)); |
| 308 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr), |
| 309 | SAA7196_OUTPIX); |
| 310 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval), |
| 311 | saa_regs[norm][SAA7196_OUTPIX]); |
| 312 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr), |
| 313 | SAA7196_HFILT); |
| 314 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval), |
| 315 | saa_regs[norm][SAA7196_HFILT]); |
| 316 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr), |
| 317 | SAA7196_OUTLINE); |
| 318 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval), |
| 319 | saa_regs[norm][SAA7196_OUTLINE]); |
| 320 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr), |
| 321 | SAA7196_VYP); |
| 322 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval), |
| 323 | saa_regs[norm][SAA7196_VYP]); |
| 324 | return c1; |
| 325 | } |
| 326 | |
| 327 | /******************************/ |
| 328 | /* misc. supporting functions */ |
| 329 | /******************************/ |
| 330 | |
| 331 | static inline void planb_lock(struct planb *pb) |
| 332 | { |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 333 | mutex_lock(&pb->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | } |
| 335 | |
| 336 | static inline void planb_unlock(struct planb *pb) |
| 337 | { |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 338 | mutex_unlock(&pb->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | } |
| 340 | |
| 341 | /***************/ |
| 342 | /* Driver Core */ |
| 343 | /***************/ |
| 344 | |
| 345 | static int planb_prepare_open(struct planb *pb) |
| 346 | { |
| 347 | int i, size; |
| 348 | |
| 349 | /* allocate memory for two plus alpha command buffers (size: max lines, |
| 350 | plus 40 commands handling, plus 1 alignment), plus dummy command buf, |
| 351 | plus clipmask buffer, plus frame grabbing status */ |
| 352 | size = (pb->tab_size*(2+MAX_GBUFFERS*TAB_FACTOR)+1+MAX_GBUFFERS |
| 353 | * PLANB_DUMMY)*sizeof(struct dbdma_cmd) |
| 354 | +(PLANB_MAXLINES*((PLANB_MAXPIXELS+7)& ~7))/8 |
| 355 | +MAX_GBUFFERS*sizeof(unsigned int); |
| 356 | if ((pb->priv_space = kmalloc (size, GFP_KERNEL)) == 0) |
| 357 | return -ENOMEM; |
| 358 | memset ((void *) pb->priv_space, 0, size); |
| 359 | pb->overlay_last1 = pb->ch1_cmd = (volatile struct dbdma_cmd *) |
| 360 | DBDMA_ALIGN (pb->priv_space); |
| 361 | pb->overlay_last2 = pb->ch2_cmd = pb->ch1_cmd + pb->tab_size; |
| 362 | pb->ch1_cmd_phys = virt_to_bus(pb->ch1_cmd); |
| 363 | pb->cap_cmd[0] = pb->ch2_cmd + pb->tab_size; |
| 364 | pb->pre_cmd[0] = pb->cap_cmd[0] + pb->tab_size * TAB_FACTOR; |
| 365 | for (i = 1; i < MAX_GBUFFERS; i++) { |
| 366 | pb->cap_cmd[i] = pb->pre_cmd[i-1] + PLANB_DUMMY; |
| 367 | pb->pre_cmd[i] = pb->cap_cmd[i] + pb->tab_size * TAB_FACTOR; |
| 368 | } |
| 369 | pb->frame_stat=(volatile unsigned int *)(pb->pre_cmd[MAX_GBUFFERS-1] |
| 370 | + PLANB_DUMMY); |
| 371 | pb->mask = (unsigned char *)(pb->frame_stat+MAX_GBUFFERS); |
| 372 | |
| 373 | pb->rawbuf = NULL; |
| 374 | pb->rawbuf_size = 0; |
| 375 | pb->grabbing = 0; |
| 376 | for (i = 0; i < MAX_GBUFFERS; i++) { |
| 377 | pb->frame_stat[i] = GBUFFER_UNUSED; |
| 378 | pb->gwidth[i] = 0; |
| 379 | pb->gheight[i] = 0; |
| 380 | pb->gfmt[i] = 0; |
| 381 | pb->gnorm_switch[i] = 0; |
| 382 | #ifndef PLANB_GSCANLINE |
| 383 | pb->lsize[i] = 0; |
| 384 | pb->lnum[i] = 0; |
| 385 | #endif /* PLANB_GSCANLINE */ |
| 386 | } |
| 387 | pb->gcount = 0; |
| 388 | pb->suspend = 0; |
| 389 | pb->last_fr = -999; |
| 390 | pb->prev_last_fr = -999; |
| 391 | |
| 392 | /* Reset DMA controllers */ |
| 393 | planb_dbdma_stop(&pb->planb_base->ch2); |
| 394 | planb_dbdma_stop(&pb->planb_base->ch1); |
| 395 | |
| 396 | return 0; |
| 397 | } |
| 398 | |
| 399 | static void planb_prepare_close(struct planb *pb) |
| 400 | { |
| 401 | int i; |
| 402 | |
| 403 | /* make sure the dma's are idle */ |
| 404 | planb_dbdma_stop(&pb->planb_base->ch2); |
| 405 | planb_dbdma_stop(&pb->planb_base->ch1); |
| 406 | /* free kernel memory of command buffers */ |
| 407 | if(pb->priv_space != 0) { |
| 408 | kfree (pb->priv_space); |
| 409 | pb->priv_space = 0; |
| 410 | pb->cmd_buff_inited = 0; |
| 411 | } |
| 412 | if(pb->rawbuf) { |
| 413 | for (i = 0; i < pb->rawbuf_size; i++) { |
| 414 | ClearPageReserved(virt_to_page(pb->rawbuf[i])); |
| 415 | free_pages((unsigned long)pb->rawbuf[i], 0); |
| 416 | } |
| 417 | kfree(pb->rawbuf); |
| 418 | } |
| 419 | pb->rawbuf = NULL; |
| 420 | } |
| 421 | |
| 422 | /*****************************/ |
| 423 | /* overlay support functions */ |
| 424 | /*****************************/ |
| 425 | |
| 426 | static inline int overlay_is_active(struct planb *pb) |
| 427 | { |
| 428 | unsigned int size = pb->tab_size * sizeof(struct dbdma_cmd); |
| 429 | unsigned int caddr = (unsigned)in_le32(&pb->planb_base->ch1.cmdptr); |
| 430 | |
| 431 | return (in_le32(&pb->overlay_last1->cmd_dep) == pb->ch1_cmd_phys) |
| 432 | && (caddr < (pb->ch1_cmd_phys + size)) |
| 433 | && (caddr >= (unsigned)pb->ch1_cmd_phys); |
| 434 | } |
| 435 | |
| 436 | static void overlay_start(struct planb *pb) |
| 437 | { |
| 438 | |
| 439 | DEBUG("PlanB: overlay_start()\n"); |
| 440 | |
| 441 | if(ACTIVE & in_le32(&pb->planb_base->ch1.status)) { |
| 442 | |
| 443 | DEBUG("PlanB: presumably, grabbing is in progress...\n"); |
| 444 | |
| 445 | planb_dbdma_stop(&pb->planb_base->ch2); |
| 446 | out_le32 (&pb->planb_base->ch2.cmdptr, |
| 447 | virt_to_bus(pb->ch2_cmd)); |
| 448 | planb_dbdma_restart(&pb->planb_base->ch2); |
| 449 | st_le16 (&pb->ch1_cmd->command, DBDMA_NOP); |
| 450 | tab_cmd_dbdma(pb->last_cmd[pb->last_fr], |
| 451 | DBDMA_NOP | BR_ALWAYS, |
| 452 | virt_to_bus(pb->ch1_cmd)); |
| 453 | eieio(); |
| 454 | pb->prev_last_fr = pb->last_fr; |
| 455 | pb->last_fr = -2; |
| 456 | if(!(ACTIVE & in_le32(&pb->planb_base->ch1.status))) { |
| 457 | IDEBUG("PlanB: became inactive " |
| 458 | "in the mean time... reactivating\n"); |
| 459 | planb_dbdma_stop(&pb->planb_base->ch1); |
| 460 | out_le32 (&pb->planb_base->ch1.cmdptr, |
| 461 | virt_to_bus(pb->ch1_cmd)); |
| 462 | planb_dbdma_restart(&pb->planb_base->ch1); |
| 463 | } |
| 464 | } else { |
| 465 | |
| 466 | DEBUG("PlanB: currently idle, so can do whatever\n"); |
| 467 | |
| 468 | planb_dbdma_stop(&pb->planb_base->ch2); |
| 469 | planb_dbdma_stop(&pb->planb_base->ch1); |
| 470 | st_le32 (&pb->planb_base->ch2.cmdptr, |
| 471 | virt_to_bus(pb->ch2_cmd)); |
| 472 | st_le32 (&pb->planb_base->ch1.cmdptr, |
| 473 | virt_to_bus(pb->ch1_cmd)); |
| 474 | out_le16 (&pb->ch1_cmd->command, DBDMA_NOP); |
| 475 | planb_dbdma_restart(&pb->planb_base->ch2); |
| 476 | planb_dbdma_restart(&pb->planb_base->ch1); |
| 477 | pb->last_fr = -1; |
| 478 | } |
| 479 | return; |
| 480 | } |
| 481 | |
| 482 | static void overlay_stop(struct planb *pb) |
| 483 | { |
| 484 | DEBUG("PlanB: overlay_stop()\n"); |
| 485 | |
| 486 | if(pb->last_fr == -1) { |
| 487 | |
| 488 | DEBUG("PlanB: no grabbing, it seems...\n"); |
| 489 | |
| 490 | planb_dbdma_stop(&pb->planb_base->ch2); |
| 491 | planb_dbdma_stop(&pb->planb_base->ch1); |
| 492 | pb->last_fr = -999; |
| 493 | } else if(pb->last_fr == -2) { |
| 494 | unsigned int cmd_dep; |
| 495 | tab_cmd_dbdma(pb->cap_cmd[pb->prev_last_fr], DBDMA_STOP, 0); |
| 496 | eieio(); |
| 497 | cmd_dep = (unsigned int)in_le32(&pb->overlay_last1->cmd_dep); |
| 498 | if(overlay_is_active(pb)) { |
| 499 | |
| 500 | DEBUG("PlanB: overlay is currently active\n"); |
| 501 | |
| 502 | planb_dbdma_stop(&pb->planb_base->ch2); |
| 503 | planb_dbdma_stop(&pb->planb_base->ch1); |
| 504 | if(cmd_dep != pb->ch1_cmd_phys) { |
| 505 | out_le32(&pb->planb_base->ch1.cmdptr, |
| 506 | virt_to_bus(pb->overlay_last1)); |
| 507 | planb_dbdma_restart(&pb->planb_base->ch1); |
| 508 | } |
| 509 | } |
| 510 | pb->last_fr = pb->prev_last_fr; |
| 511 | pb->prev_last_fr = -999; |
| 512 | } |
| 513 | return; |
| 514 | } |
| 515 | |
| 516 | static void suspend_overlay(struct planb *pb) |
| 517 | { |
| 518 | int fr = -1; |
| 519 | struct dbdma_cmd last; |
| 520 | |
| 521 | DEBUG("PlanB: suspend_overlay: %d\n", pb->suspend); |
| 522 | |
| 523 | if(pb->suspend++) |
| 524 | return; |
| 525 | if(ACTIVE & in_le32(&pb->planb_base->ch1.status)) { |
| 526 | if(pb->last_fr == -2) { |
| 527 | fr = pb->prev_last_fr; |
| 528 | memcpy(&last, (void*)pb->last_cmd[fr], sizeof(last)); |
| 529 | tab_cmd_dbdma(pb->last_cmd[fr], DBDMA_STOP, 0); |
| 530 | } |
| 531 | if(overlay_is_active(pb)) { |
| 532 | planb_dbdma_stop(&pb->planb_base->ch2); |
| 533 | planb_dbdma_stop(&pb->planb_base->ch1); |
| 534 | pb->suspended.overlay = 1; |
| 535 | pb->suspended.frame = fr; |
| 536 | memcpy(&pb->suspended.cmd, &last, sizeof(last)); |
| 537 | return; |
| 538 | } |
| 539 | } |
| 540 | pb->suspended.overlay = 0; |
| 541 | pb->suspended.frame = fr; |
| 542 | memcpy(&pb->suspended.cmd, &last, sizeof(last)); |
| 543 | return; |
| 544 | } |
| 545 | |
| 546 | static void resume_overlay(struct planb *pb) |
| 547 | { |
| 548 | |
| 549 | DEBUG("PlanB: resume_overlay: %d\n", pb->suspend); |
| 550 | |
| 551 | if(pb->suspend > 1) |
| 552 | return; |
| 553 | if(pb->suspended.frame != -1) { |
| 554 | memcpy((void*)pb->last_cmd[pb->suspended.frame], |
| 555 | &pb->suspended.cmd, sizeof(pb->suspended.cmd)); |
| 556 | } |
| 557 | if(ACTIVE & in_le32(&pb->planb_base->ch1.status)) { |
| 558 | goto finish; |
| 559 | } |
| 560 | if(pb->suspended.overlay) { |
| 561 | |
| 562 | DEBUG("PlanB: overlay being resumed\n"); |
| 563 | |
| 564 | st_le16 (&pb->ch1_cmd->command, DBDMA_NOP); |
| 565 | st_le16 (&pb->ch2_cmd->command, DBDMA_NOP); |
| 566 | /* Set command buffer addresses */ |
| 567 | st_le32(&pb->planb_base->ch1.cmdptr, |
| 568 | virt_to_bus(pb->overlay_last1)); |
| 569 | out_le32(&pb->planb_base->ch2.cmdptr, |
| 570 | virt_to_bus(pb->overlay_last2)); |
| 571 | /* Start the DMA controller */ |
| 572 | out_le32 (&pb->planb_base->ch2.control, |
| 573 | PLANB_CLR(PAUSE) | PLANB_SET(RUN|WAKE)); |
| 574 | out_le32 (&pb->planb_base->ch1.control, |
| 575 | PLANB_CLR(PAUSE) | PLANB_SET(RUN|WAKE)); |
| 576 | } else if(pb->suspended.frame != -1) { |
| 577 | out_le32(&pb->planb_base->ch1.cmdptr, |
| 578 | virt_to_bus(pb->last_cmd[pb->suspended.frame])); |
| 579 | out_le32 (&pb->planb_base->ch1.control, |
| 580 | PLANB_CLR(PAUSE) | PLANB_SET(RUN|WAKE)); |
| 581 | } |
| 582 | |
| 583 | finish: |
| 584 | pb->suspend--; |
| 585 | wake_up_interruptible(&pb->suspendq); |
| 586 | } |
| 587 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 588 | static void add_clip(struct planb *pb, struct video_clip *clip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | { |
| 590 | volatile unsigned char *base; |
| 591 | int xc = clip->x, yc = clip->y; |
| 592 | int wc = clip->width, hc = clip->height; |
| 593 | int ww = pb->win.width, hw = pb->win.height; |
| 594 | int x, y, xtmp1, xtmp2; |
| 595 | |
| 596 | DEBUG("PlanB: clip %dx%d+%d+%d\n", wc, hc, xc, yc); |
| 597 | |
| 598 | if(xc < 0) { |
| 599 | wc += xc; |
| 600 | xc = 0; |
| 601 | } |
| 602 | if(yc < 0) { |
| 603 | hc += yc; |
| 604 | yc = 0; |
| 605 | } |
| 606 | if(xc + wc > ww) |
| 607 | wc = ww - xc; |
| 608 | if(wc <= 0) /* Nothing to do */ |
| 609 | return; |
| 610 | if(yc + hc > hw) |
| 611 | hc = hw - yc; |
| 612 | |
| 613 | for (y = yc; y < yc+hc; y++) { |
| 614 | xtmp1=xc>>3; |
| 615 | xtmp2=(xc+wc)>>3; |
| 616 | base = pb->mask + y*96; |
| 617 | if(xc != 0 || wc >= 8) |
| 618 | *(base + xtmp1) &= (unsigned char)(0x00ff & |
| 619 | (0xff00 >> (xc&7))); |
| 620 | for (x = xtmp1 + 1; x < xtmp2; x++) { |
| 621 | *(base + x) = 0; |
| 622 | } |
| 623 | if(xc < (ww & ~0x7)) |
| 624 | *(base + xtmp2) &= (unsigned char)(0x00ff >> |
| 625 | ((xc+wc) & 7)); |
| 626 | } |
| 627 | |
| 628 | return; |
| 629 | } |
| 630 | |
| 631 | static void fill_cmd_buff(struct planb *pb) |
| 632 | { |
| 633 | int restore = 0; |
| 634 | volatile struct dbdma_cmd last; |
| 635 | |
| 636 | DEBUG("PlanB: fill_cmd_buff()\n"); |
| 637 | |
| 638 | if(pb->overlay_last1 != pb->ch1_cmd) { |
| 639 | restore = 1; |
| 640 | last = *(pb->overlay_last1); |
| 641 | } |
| 642 | memset ((void *) pb->ch1_cmd, 0, 2 * pb->tab_size |
| 643 | * sizeof(struct dbdma_cmd)); |
| 644 | cmd_buff (pb); |
| 645 | if(restore) |
| 646 | *(pb->overlay_last1) = last; |
| 647 | if(pb->suspended.overlay) { |
| 648 | unsigned long jump_addr = in_le32(&pb->overlay_last1->cmd_dep); |
| 649 | if(jump_addr != pb->ch1_cmd_phys) { |
| 650 | int i; |
| 651 | |
| 652 | DEBUG("PlanB: adjusting ch1's jump address\n"); |
| 653 | |
| 654 | for(i = 0; i < MAX_GBUFFERS; i++) { |
| 655 | if(pb->need_pre_capture[i]) { |
| 656 | if(jump_addr == virt_to_bus(pb->pre_cmd[i])) |
| 657 | goto found; |
| 658 | } else { |
| 659 | if(jump_addr == virt_to_bus(pb->cap_cmd[i])) |
| 660 | goto found; |
| 661 | } |
| 662 | } |
| 663 | |
| 664 | DEBUG("PlanB: not found...\n"); |
| 665 | |
| 666 | goto out; |
| 667 | found: |
| 668 | if(pb->need_pre_capture[i]) |
| 669 | out_le32(&pb->pre_cmd[i]->phy_addr, |
| 670 | virt_to_bus(pb->overlay_last1)); |
| 671 | else |
| 672 | out_le32(&pb->cap_cmd[i]->phy_addr, |
| 673 | virt_to_bus(pb->overlay_last1)); |
| 674 | } |
| 675 | } |
| 676 | out: |
| 677 | pb->cmd_buff_inited = 1; |
| 678 | |
| 679 | return; |
| 680 | } |
| 681 | |
| 682 | static void cmd_buff(struct planb *pb) |
| 683 | { |
| 684 | int i, bpp, count, nlines, stepsize, interlace; |
| 685 | unsigned long base, jump, addr_com, addr_dep; |
| 686 | volatile struct dbdma_cmd *c1 = pb->ch1_cmd; |
| 687 | volatile struct dbdma_cmd *c2 = pb->ch2_cmd; |
| 688 | |
| 689 | interlace = pb->win.interlace; |
| 690 | bpp = pb->win.bpp; |
| 691 | count = (bpp * ((pb->win.x + pb->win.width > pb->win.swidth) ? |
| 692 | (pb->win.swidth - pb->win.x) : pb->win.width)); |
| 693 | nlines = ((pb->win.y + pb->win.height > pb->win.sheight) ? |
| 694 | (pb->win.sheight - pb->win.y) : pb->win.height); |
| 695 | |
| 696 | /* Do video in: */ |
| 697 | |
| 698 | /* Preamble commands: */ |
| 699 | addr_com = virt_to_bus(c1); |
| 700 | addr_dep = virt_to_bus(&c1->cmd_dep); |
| 701 | tab_cmd_dbdma(c1++, DBDMA_NOP, 0); |
| 702 | jump = virt_to_bus(c1+16); /* 14 by cmd_geo_setup() and 2 for padding */ |
| 703 | if((c1 = cmd_geo_setup(c1, pb->win.width, pb->win.height, interlace, |
| 704 | bpp, 1, pb)) == NULL) { |
| 705 | printk(KERN_WARNING "PlanB: encountered serious problems\n"); |
| 706 | tab_cmd_dbdma(pb->ch1_cmd + 1, DBDMA_STOP, 0); |
| 707 | tab_cmd_dbdma(pb->ch2_cmd + 1, DBDMA_STOP, 0); |
| 708 | return; |
| 709 | } |
| 710 | tab_cmd_store(c1++, addr_com, (unsigned)(DBDMA_NOP | BR_ALWAYS) << 16); |
| 711 | tab_cmd_store(c1++, addr_dep, jump); |
| 712 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.wait_sel), |
| 713 | PLANB_SET(FIELD_SYNC)); |
| 714 | /* (1) wait for field sync to be set */ |
| 715 | tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0); |
| 716 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel), |
| 717 | PLANB_SET(ODD_FIELD)); |
| 718 | /* wait for field sync to be cleared */ |
| 719 | tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0); |
| 720 | /* if not odd field, wait until field sync is set again */ |
| 721 | tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFSET, virt_to_bus(c1-3)); c1++; |
| 722 | /* assert ch_sync to ch2 */ |
| 723 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch2.control), |
| 724 | PLANB_SET(CH_SYNC)); |
| 725 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel), |
| 726 | PLANB_SET(DMA_ABORT)); |
| 727 | |
| 728 | base = (pb->frame_buffer_phys + pb->offset + pb->win.y * (pb->win.bpl |
| 729 | + pb->win.pad) + pb->win.x * bpp); |
| 730 | |
| 731 | if (interlace) { |
| 732 | stepsize = 2; |
| 733 | jump = virt_to_bus(c1 + (nlines + 1) / 2); |
| 734 | } else { |
| 735 | stepsize = 1; |
| 736 | jump = virt_to_bus(c1 + nlines); |
| 737 | } |
| 738 | |
| 739 | /* even field data: */ |
| 740 | for (i=0; i < nlines; i += stepsize, c1++) |
| 741 | tab_cmd_gen(c1, INPUT_MORE | KEY_STREAM0 | BR_IFSET, |
| 742 | count, base + i * (pb->win.bpl + pb->win.pad), jump); |
| 743 | |
| 744 | /* For non-interlaced, we use even fields only */ |
| 745 | if (!interlace) |
| 746 | goto cmd_tab_data_end; |
| 747 | |
| 748 | /* Resync to odd field */ |
| 749 | /* (2) wait for field sync to be set */ |
| 750 | tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0); |
| 751 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel), |
| 752 | PLANB_SET(ODD_FIELD)); |
| 753 | /* wait for field sync to be cleared */ |
| 754 | tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0); |
| 755 | /* if not odd field, wait until field sync is set again */ |
| 756 | tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFCLR, virt_to_bus(c1-3)); c1++; |
| 757 | /* assert ch_sync to ch2 */ |
| 758 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch2.control), |
| 759 | PLANB_SET(CH_SYNC)); |
| 760 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel), |
| 761 | PLANB_SET(DMA_ABORT)); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 762 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | /* odd field data: */ |
| 764 | jump = virt_to_bus(c1 + nlines / 2); |
| 765 | for (i=1; i < nlines; i += stepsize, c1++) |
| 766 | tab_cmd_gen(c1, INPUT_MORE | KEY_STREAM0 | BR_IFSET, count, |
| 767 | base + i * (pb->win.bpl + pb->win.pad), jump); |
| 768 | |
| 769 | /* And jump back to the start */ |
| 770 | cmd_tab_data_end: |
| 771 | pb->overlay_last1 = c1; /* keep a pointer to the last command */ |
| 772 | tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, virt_to_bus(pb->ch1_cmd)); |
| 773 | |
| 774 | /* Clipmask command buffer */ |
| 775 | |
| 776 | /* Preamble commands: */ |
| 777 | tab_cmd_dbdma(c2++, DBDMA_NOP, 0); |
| 778 | tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.wait_sel), |
| 779 | PLANB_SET(CH_SYNC)); |
| 780 | /* wait until ch1 asserts ch_sync */ |
| 781 | tab_cmd_dbdma(c2++, DBDMA_NOP | WAIT_IFCLR, 0); |
| 782 | /* clear ch_sync asserted by ch1 */ |
| 783 | tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.control), |
| 784 | PLANB_CLR(CH_SYNC)); |
| 785 | tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.wait_sel), |
| 786 | PLANB_SET(FIELD_SYNC)); |
| 787 | tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.br_sel), |
| 788 | PLANB_SET(ODD_FIELD)); |
| 789 | |
| 790 | /* jump to end of even field if appropriate */ |
| 791 | /* this points to (interlace)? pos. C: pos. B */ |
| 792 | jump = (interlace) ? virt_to_bus(c2 + (nlines + 1) / 2 + 2): |
| 793 | virt_to_bus(c2 + nlines + 2); |
| 794 | /* if odd field, skip over to odd field clipmasking */ |
| 795 | tab_cmd_dbdma(c2++, DBDMA_NOP | BR_IFSET, jump); |
| 796 | |
| 797 | /* even field mask: */ |
| 798 | tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.br_sel), |
| 799 | PLANB_SET(DMA_ABORT)); |
| 800 | /* this points to pos. B */ |
| 801 | jump = (interlace) ? virt_to_bus(c2 + nlines + 1): |
| 802 | virt_to_bus(c2 + nlines); |
| 803 | base = virt_to_bus(pb->mask); |
| 804 | for (i=0; i < nlines; i += stepsize, c2++) |
| 805 | tab_cmd_gen(c2, OUTPUT_MORE | KEY_STREAM0 | BR_IFSET, 96, |
| 806 | base + i * 96, jump); |
| 807 | |
| 808 | /* For non-interlaced, we use only even fields */ |
| 809 | if(!interlace) |
| 810 | goto cmd_tab_mask_end; |
| 811 | |
| 812 | /* odd field mask: */ |
| 813 | /* C */ tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.br_sel), |
| 814 | PLANB_SET(DMA_ABORT)); |
| 815 | /* this points to pos. B */ |
| 816 | jump = virt_to_bus(c2 + nlines / 2); |
| 817 | base = virt_to_bus(pb->mask); |
| 818 | for (i=1; i < nlines; i += 2, c2++) /* abort if set */ |
| 819 | tab_cmd_gen(c2, OUTPUT_MORE | KEY_STREAM0 | BR_IFSET, 96, |
| 820 | base + i * 96, jump); |
| 821 | |
| 822 | /* Inform channel 1 and jump back to start */ |
| 823 | cmd_tab_mask_end: |
| 824 | /* ok, I just realized this is kind of flawed. */ |
| 825 | /* this part is reached only after odd field clipmasking. */ |
| 826 | /* wanna clean up? */ |
| 827 | /* wait for field sync to be set */ |
| 828 | /* corresponds to fsync (1) of ch1 */ |
| 829 | /* B */ tab_cmd_dbdma(c2++, DBDMA_NOP | WAIT_IFCLR, 0); |
| 830 | /* restart ch1, meant to clear any dead bit or something */ |
| 831 | tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch1.control), |
| 832 | PLANB_CLR(RUN)); |
| 833 | tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch1.control), |
| 834 | PLANB_SET(RUN)); |
| 835 | pb->overlay_last2 = c2; /* keep a pointer to the last command */ |
| 836 | /* start over even field clipmasking */ |
| 837 | tab_cmd_dbdma(c2, DBDMA_NOP | BR_ALWAYS, virt_to_bus(pb->ch2_cmd)); |
| 838 | |
| 839 | eieio(); |
| 840 | return; |
| 841 | } |
| 842 | |
| 843 | /*********************************/ |
| 844 | /* grabdisplay support functions */ |
| 845 | /*********************************/ |
| 846 | |
| 847 | static int palette2fmt[] = { |
| 848 | 0, |
| 849 | PLANB_GRAY, |
| 850 | 0, |
| 851 | 0, |
| 852 | 0, |
| 853 | PLANB_COLOUR32, |
| 854 | PLANB_COLOUR15, |
| 855 | 0, |
| 856 | 0, |
| 857 | 0, |
| 858 | 0, |
| 859 | 0, |
| 860 | 0, |
| 861 | 0, |
| 862 | 0, |
| 863 | }; |
| 864 | |
| 865 | #define PLANB_PALETTE_MAX 15 |
| 866 | |
| 867 | static int vgrab(struct planb *pb, struct video_mmap *mp) |
| 868 | { |
| 869 | unsigned int fr = mp->frame; |
| 870 | unsigned int format; |
| 871 | |
| 872 | if(pb->rawbuf==NULL) { |
| 873 | int err; |
| 874 | if((err=grabbuf_alloc(pb))) |
| 875 | return err; |
| 876 | } |
| 877 | |
| 878 | IDEBUG("PlanB: grab %d: %dx%d(%u)\n", pb->grabbing, |
| 879 | mp->width, mp->height, fr); |
| 880 | |
| 881 | if(pb->grabbing >= MAX_GBUFFERS) |
| 882 | return -ENOBUFS; |
| 883 | if(fr > (MAX_GBUFFERS - 1) || fr < 0) |
| 884 | return -EINVAL; |
| 885 | if(mp->height <= 0 || mp->width <= 0) |
| 886 | return -EINVAL; |
| 887 | if(mp->format < 0 || mp->format >= PLANB_PALETTE_MAX) |
| 888 | return -EINVAL; |
| 889 | if((format = palette2fmt[mp->format]) == 0) |
| 890 | return -EINVAL; |
| 891 | if (mp->height * mp->width * format > PLANB_MAX_FBUF) /* format = bpp */ |
| 892 | return -EINVAL; |
| 893 | |
| 894 | planb_lock(pb); |
| 895 | if(mp->width != pb->gwidth[fr] || mp->height != pb->gheight[fr] || |
| 896 | format != pb->gfmt[fr] || (pb->gnorm_switch[fr])) { |
| 897 | int i; |
| 898 | #ifndef PLANB_GSCANLINE |
| 899 | unsigned int osize = pb->gwidth[fr] * pb->gheight[fr] |
| 900 | * pb->gfmt[fr]; |
| 901 | unsigned int nsize = mp->width * mp->height * format; |
| 902 | #endif |
| 903 | |
| 904 | IDEBUG("PlanB: gwidth = %d, gheight = %d, mp->format = %u\n", |
| 905 | mp->width, mp->height, mp->format); |
| 906 | |
| 907 | #ifndef PLANB_GSCANLINE |
| 908 | if(pb->gnorm_switch[fr]) |
| 909 | nsize = 0; |
| 910 | if (nsize < osize) { |
| 911 | for(i = pb->gbuf_idx[fr]; osize > 0; i++) { |
| 912 | memset((void *)pb->rawbuf[i], 0, PAGE_SIZE); |
| 913 | osize -= PAGE_SIZE; |
| 914 | } |
| 915 | } |
| 916 | for(i = pb->l_fr_addr_idx[fr]; i < pb->l_fr_addr_idx[fr] |
| 917 | + pb->lnum[fr]; i++) |
| 918 | memset((void *)pb->rawbuf[i], 0, PAGE_SIZE); |
| 919 | #else |
| 920 | /* XXX TODO */ |
| 921 | /* |
| 922 | if(pb->gnorm_switch[fr]) |
| 923 | memset((void *)pb->gbuffer[fr], 0, |
| 924 | pb->gbytes_per_line * pb->gheight[fr]); |
| 925 | else { |
| 926 | if(mp-> |
| 927 | for(i = 0; i < pb->gheight[fr]; i++) { |
| 928 | memset((void *)(pb->gbuffer[fr] |
| 929 | + pb->gbytes_per_line * i |
| 930 | } |
| 931 | } |
| 932 | */ |
| 933 | #endif |
| 934 | pb->gwidth[fr] = mp->width; |
| 935 | pb->gheight[fr] = mp->height; |
| 936 | pb->gfmt[fr] = format; |
| 937 | pb->last_cmd[fr] = setup_grab_cmd(fr, pb); |
| 938 | planb_pre_capture(fr, pb->gfmt[fr], pb); /* gfmt = bpp */ |
| 939 | pb->need_pre_capture[fr] = 1; |
| 940 | pb->gnorm_switch[fr] = 0; |
| 941 | } else |
| 942 | pb->need_pre_capture[fr] = 0; |
| 943 | pb->frame_stat[fr] = GBUFFER_GRABBING; |
| 944 | if(!(ACTIVE & in_le32(&pb->planb_base->ch1.status))) { |
| 945 | |
| 946 | IDEBUG("PlanB: ch1 inactive, initiating grabbing\n"); |
| 947 | |
| 948 | planb_dbdma_stop(&pb->planb_base->ch1); |
| 949 | if(pb->need_pre_capture[fr]) { |
| 950 | |
| 951 | IDEBUG("PlanB: padding pre-capture sequence\n"); |
| 952 | |
| 953 | out_le32 (&pb->planb_base->ch1.cmdptr, |
| 954 | virt_to_bus(pb->pre_cmd[fr])); |
| 955 | } else { |
| 956 | tab_cmd_dbdma(pb->last_cmd[fr], DBDMA_STOP, 0); |
| 957 | tab_cmd_dbdma(pb->cap_cmd[fr], DBDMA_NOP, 0); |
| 958 | /* let's be on the safe side. here is not timing critical. */ |
| 959 | tab_cmd_dbdma((pb->cap_cmd[fr] + 1), DBDMA_NOP, 0); |
| 960 | out_le32 (&pb->planb_base->ch1.cmdptr, |
| 961 | virt_to_bus(pb->cap_cmd[fr])); |
| 962 | } |
| 963 | planb_dbdma_restart(&pb->planb_base->ch1); |
| 964 | pb->last_fr = fr; |
| 965 | } else { |
| 966 | int i; |
| 967 | |
| 968 | IDEBUG("PlanB: ch1 active, grabbing being queued\n"); |
| 969 | |
| 970 | if((pb->last_fr == -1) || ((pb->last_fr == -2) && |
| 971 | overlay_is_active(pb))) { |
| 972 | |
| 973 | IDEBUG("PlanB: overlay is active, grabbing defered\n"); |
| 974 | |
| 975 | tab_cmd_dbdma(pb->last_cmd[fr], |
| 976 | DBDMA_NOP | BR_ALWAYS, |
| 977 | virt_to_bus(pb->ch1_cmd)); |
| 978 | if(pb->need_pre_capture[fr]) { |
| 979 | |
| 980 | IDEBUG("PlanB: padding pre-capture sequence\n"); |
| 981 | |
| 982 | tab_cmd_store(pb->pre_cmd[fr], |
| 983 | virt_to_bus(&pb->overlay_last1->cmd_dep), |
| 984 | virt_to_bus(pb->ch1_cmd)); |
| 985 | eieio(); |
| 986 | out_le32 (&pb->overlay_last1->cmd_dep, |
| 987 | virt_to_bus(pb->pre_cmd[fr])); |
| 988 | } else { |
| 989 | tab_cmd_store(pb->cap_cmd[fr], |
| 990 | virt_to_bus(&pb->overlay_last1->cmd_dep), |
| 991 | virt_to_bus(pb->ch1_cmd)); |
| 992 | tab_cmd_dbdma((pb->cap_cmd[fr] + 1), |
| 993 | DBDMA_NOP, 0); |
| 994 | eieio(); |
| 995 | out_le32 (&pb->overlay_last1->cmd_dep, |
| 996 | virt_to_bus(pb->cap_cmd[fr])); |
| 997 | } |
| 998 | for(i = 0; overlay_is_active(pb) && i < 999; i++) |
| 999 | IDEBUG("PlanB: waiting for overlay done\n"); |
| 1000 | tab_cmd_dbdma(pb->ch1_cmd, DBDMA_NOP, 0); |
| 1001 | pb->prev_last_fr = fr; |
| 1002 | pb->last_fr = -2; |
| 1003 | } else if(pb->last_fr == -2) { |
| 1004 | |
| 1005 | IDEBUG("PlanB: mixed mode detected, grabbing" |
| 1006 | " will be done before activating overlay\n"); |
| 1007 | |
| 1008 | tab_cmd_dbdma(pb->ch1_cmd, DBDMA_NOP, 0); |
| 1009 | if(pb->need_pre_capture[fr]) { |
| 1010 | |
| 1011 | IDEBUG("PlanB: padding pre-capture sequence\n"); |
| 1012 | |
| 1013 | tab_cmd_dbdma(pb->last_cmd[pb->prev_last_fr], |
| 1014 | DBDMA_NOP | BR_ALWAYS, |
| 1015 | virt_to_bus(pb->pre_cmd[fr])); |
| 1016 | eieio(); |
| 1017 | } else { |
| 1018 | tab_cmd_dbdma(pb->cap_cmd[fr], DBDMA_NOP, 0); |
| 1019 | if(pb->gwidth[pb->prev_last_fr] != |
| 1020 | pb->gwidth[fr] |
| 1021 | || pb->gheight[pb->prev_last_fr] != |
| 1022 | pb->gheight[fr] |
| 1023 | || pb->gfmt[pb->prev_last_fr] != |
| 1024 | pb->gfmt[fr]) |
| 1025 | tab_cmd_dbdma((pb->cap_cmd[fr] + 1), |
| 1026 | DBDMA_NOP, 0); |
| 1027 | else |
| 1028 | tab_cmd_dbdma((pb->cap_cmd[fr] + 1), |
| 1029 | DBDMA_NOP | BR_ALWAYS, |
| 1030 | virt_to_bus(pb->cap_cmd[fr] + 16)); |
| 1031 | tab_cmd_dbdma(pb->last_cmd[pb->prev_last_fr], |
| 1032 | DBDMA_NOP | BR_ALWAYS, |
| 1033 | virt_to_bus(pb->cap_cmd[fr])); |
| 1034 | eieio(); |
| 1035 | } |
| 1036 | tab_cmd_dbdma(pb->last_cmd[fr], |
| 1037 | DBDMA_NOP | BR_ALWAYS, |
| 1038 | virt_to_bus(pb->ch1_cmd)); |
| 1039 | eieio(); |
| 1040 | pb->prev_last_fr = fr; |
| 1041 | pb->last_fr = -2; |
| 1042 | } else { |
| 1043 | |
| 1044 | IDEBUG("PlanB: active grabbing session detected\n"); |
| 1045 | |
| 1046 | if(pb->need_pre_capture[fr]) { |
| 1047 | |
| 1048 | IDEBUG("PlanB: padding pre-capture sequence\n"); |
| 1049 | |
| 1050 | tab_cmd_dbdma(pb->last_cmd[pb->last_fr], |
| 1051 | DBDMA_NOP | BR_ALWAYS, |
| 1052 | virt_to_bus(pb->pre_cmd[fr])); |
| 1053 | eieio(); |
| 1054 | } else { |
| 1055 | tab_cmd_dbdma(pb->last_cmd[fr], DBDMA_STOP, 0); |
| 1056 | tab_cmd_dbdma(pb->cap_cmd[fr], DBDMA_NOP, 0); |
| 1057 | if(pb->gwidth[pb->last_fr] != pb->gwidth[fr] |
| 1058 | || pb->gheight[pb->last_fr] != |
| 1059 | pb->gheight[fr] |
| 1060 | || pb->gfmt[pb->last_fr] != |
| 1061 | pb->gfmt[fr]) |
| 1062 | tab_cmd_dbdma((pb->cap_cmd[fr] + 1), |
| 1063 | DBDMA_NOP, 0); |
| 1064 | else |
| 1065 | tab_cmd_dbdma((pb->cap_cmd[fr] + 1), |
| 1066 | DBDMA_NOP | BR_ALWAYS, |
| 1067 | virt_to_bus(pb->cap_cmd[fr] + 16)); |
| 1068 | tab_cmd_dbdma(pb->last_cmd[pb->last_fr], |
| 1069 | DBDMA_NOP | BR_ALWAYS, |
| 1070 | virt_to_bus(pb->cap_cmd[fr])); |
| 1071 | eieio(); |
| 1072 | } |
| 1073 | pb->last_fr = fr; |
| 1074 | } |
| 1075 | if(!(ACTIVE & in_le32(&pb->planb_base->ch1.status))) { |
| 1076 | |
| 1077 | IDEBUG("PlanB: became inactive in the mean time..." |
| 1078 | "reactivating\n"); |
| 1079 | |
| 1080 | planb_dbdma_stop(&pb->planb_base->ch1); |
| 1081 | out_le32 (&pb->planb_base->ch1.cmdptr, |
| 1082 | virt_to_bus(pb->cap_cmd[fr])); |
| 1083 | planb_dbdma_restart(&pb->planb_base->ch1); |
| 1084 | } |
| 1085 | } |
| 1086 | pb->grabbing++; |
| 1087 | planb_unlock(pb); |
| 1088 | |
| 1089 | return 0; |
| 1090 | } |
| 1091 | |
| 1092 | static void planb_pre_capture(int fr, int bpp, struct planb *pb) |
| 1093 | { |
| 1094 | volatile struct dbdma_cmd *c1 = pb->pre_cmd[fr]; |
| 1095 | int interlace = (pb->gheight[fr] > pb->maxlines/2)? 1: 0; |
| 1096 | |
| 1097 | tab_cmd_dbdma(c1++, DBDMA_NOP, 0); |
| 1098 | if((c1 = cmd_geo_setup(c1, pb->gwidth[fr], pb->gheight[fr], interlace, |
| 1099 | bpp, 0, pb)) == NULL) { |
| 1100 | printk(KERN_WARNING "PlanB: encountered some problems\n"); |
| 1101 | tab_cmd_dbdma(pb->pre_cmd[fr] + 1, DBDMA_STOP, 0); |
| 1102 | return; |
| 1103 | } |
| 1104 | /* Sync to even field */ |
| 1105 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.wait_sel), |
| 1106 | PLANB_SET(FIELD_SYNC)); |
| 1107 | tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0); |
| 1108 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel), |
| 1109 | PLANB_SET(ODD_FIELD)); |
| 1110 | tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0); |
| 1111 | tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFSET, virt_to_bus(c1-3)); c1++; |
| 1112 | tab_cmd_dbdma(c1++, DBDMA_NOP | INTR_ALWAYS, 0); |
| 1113 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel), |
| 1114 | PLANB_SET(DMA_ABORT)); |
| 1115 | /* For non-interlaced, we use even fields only */ |
| 1116 | if (pb->gheight[fr] <= pb->maxlines/2) |
| 1117 | goto cmd_tab_data_end; |
| 1118 | /* Sync to odd field */ |
| 1119 | tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0); |
| 1120 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel), |
| 1121 | PLANB_SET(ODD_FIELD)); |
| 1122 | tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0); |
| 1123 | tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFCLR, virt_to_bus(c1-3)); c1++; |
| 1124 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel), |
| 1125 | PLANB_SET(DMA_ABORT)); |
| 1126 | cmd_tab_data_end: |
| 1127 | tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, virt_to_bus(pb->cap_cmd[fr])); |
| 1128 | |
| 1129 | eieio(); |
| 1130 | } |
| 1131 | |
| 1132 | static volatile struct dbdma_cmd *setup_grab_cmd(int fr, struct planb *pb) |
| 1133 | { |
| 1134 | int i, bpp, count, nlines, stepsize, interlace; |
| 1135 | #ifdef PLANB_GSCANLINE |
| 1136 | int scanline; |
| 1137 | #else |
| 1138 | int nlpp, leftover1; |
| 1139 | unsigned long base; |
| 1140 | #endif |
| 1141 | unsigned long jump; |
| 1142 | int pagei; |
| 1143 | volatile struct dbdma_cmd *c1; |
| 1144 | volatile struct dbdma_cmd *jump_addr; |
| 1145 | |
| 1146 | c1 = pb->cap_cmd[fr]; |
| 1147 | interlace = (pb->gheight[fr] > pb->maxlines/2)? 1: 0; |
| 1148 | bpp = pb->gfmt[fr]; /* gfmt = bpp */ |
| 1149 | count = bpp * pb->gwidth[fr]; |
| 1150 | nlines = pb->gheight[fr]; |
| 1151 | #ifdef PLANB_GSCANLINE |
| 1152 | scanline = pb->gbytes_per_line; |
| 1153 | #else |
| 1154 | pb->lsize[fr] = count; |
| 1155 | pb->lnum[fr] = 0; |
| 1156 | #endif |
| 1157 | |
| 1158 | /* Do video in: */ |
| 1159 | |
| 1160 | /* Preamble commands: */ |
| 1161 | tab_cmd_dbdma(c1++, DBDMA_NOP, 0); |
| 1162 | tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, virt_to_bus(c1 + 16)); c1++; |
| 1163 | if((c1 = cmd_geo_setup(c1, pb->gwidth[fr], pb->gheight[fr], interlace, |
| 1164 | bpp, 0, pb)) == NULL) { |
| 1165 | printk(KERN_WARNING "PlanB: encountered serious problems\n"); |
| 1166 | tab_cmd_dbdma(pb->cap_cmd[fr] + 1, DBDMA_STOP, 0); |
| 1167 | return (pb->cap_cmd[fr] + 2); |
| 1168 | } |
| 1169 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.wait_sel), |
| 1170 | PLANB_SET(FIELD_SYNC)); |
| 1171 | tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0); |
| 1172 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel), |
| 1173 | PLANB_SET(ODD_FIELD)); |
| 1174 | tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0); |
| 1175 | tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFSET, virt_to_bus(c1-3)); c1++; |
| 1176 | tab_cmd_dbdma(c1++, DBDMA_NOP | INTR_ALWAYS, 0); |
| 1177 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel), |
| 1178 | PLANB_SET(DMA_ABORT)); |
| 1179 | |
| 1180 | if (interlace) { |
| 1181 | stepsize = 2; |
| 1182 | jump_addr = c1 + TAB_FACTOR * (nlines + 1) / 2; |
| 1183 | } else { |
| 1184 | stepsize = 1; |
| 1185 | jump_addr = c1 + TAB_FACTOR * nlines; |
| 1186 | } |
| 1187 | jump = virt_to_bus(jump_addr); |
| 1188 | |
| 1189 | /* even field data: */ |
| 1190 | |
| 1191 | pagei = pb->gbuf_idx[fr]; |
| 1192 | #ifdef PLANB_GSCANLINE |
| 1193 | for (i = 0; i < nlines; i += stepsize) { |
| 1194 | tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count, |
| 1195 | virt_to_bus(pb->rawbuf[pagei |
| 1196 | + i * scanline / PAGE_SIZE]), jump); |
| 1197 | } |
| 1198 | #else |
| 1199 | i = 0; |
| 1200 | leftover1 = 0; |
| 1201 | do { |
| 1202 | int j; |
| 1203 | |
| 1204 | base = virt_to_bus(pb->rawbuf[pagei]); |
| 1205 | nlpp = (PAGE_SIZE - leftover1) / count / stepsize; |
| 1206 | for(j = 0; j < nlpp && i < nlines; j++, i += stepsize, c1++) |
| 1207 | tab_cmd_gen(c1, INPUT_MORE | KEY_STREAM0 | BR_IFSET, |
| 1208 | count, base + count * j * stepsize + leftover1, jump); |
| 1209 | if(i < nlines) { |
| 1210 | int lov0 = PAGE_SIZE - count * nlpp * stepsize - leftover1; |
| 1211 | |
| 1212 | if(lov0 == 0) |
| 1213 | leftover1 = 0; |
| 1214 | else { |
| 1215 | if(lov0 >= count) { |
| 1216 | tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count, base |
| 1217 | + count * nlpp * stepsize + leftover1, jump); |
| 1218 | } else { |
| 1219 | pb->l_to_addr[fr][pb->lnum[fr]] = pb->rawbuf[pagei] |
| 1220 | + count * nlpp * stepsize + leftover1; |
| 1221 | pb->l_to_next_idx[fr][pb->lnum[fr]] = pagei + 1; |
| 1222 | pb->l_to_next_size[fr][pb->lnum[fr]] = count - lov0; |
| 1223 | tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count, |
| 1224 | virt_to_bus(pb->rawbuf[pb->l_fr_addr_idx[fr] |
| 1225 | + pb->lnum[fr]]), jump); |
| 1226 | if(++pb->lnum[fr] > MAX_LNUM) |
| 1227 | pb->lnum[fr]--; |
| 1228 | } |
| 1229 | leftover1 = count * stepsize - lov0; |
| 1230 | i += stepsize; |
| 1231 | } |
| 1232 | } |
| 1233 | pagei++; |
| 1234 | } while(i < nlines); |
| 1235 | tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, jump); |
| 1236 | c1 = jump_addr; |
| 1237 | #endif /* PLANB_GSCANLINE */ |
| 1238 | |
| 1239 | /* For non-interlaced, we use even fields only */ |
| 1240 | if (!interlace) |
| 1241 | goto cmd_tab_data_end; |
| 1242 | |
| 1243 | /* Sync to odd field */ |
| 1244 | tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0); |
| 1245 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel), |
| 1246 | PLANB_SET(ODD_FIELD)); |
| 1247 | tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0); |
| 1248 | tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFCLR, virt_to_bus(c1-3)); c1++; |
| 1249 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel), |
| 1250 | PLANB_SET(DMA_ABORT)); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1251 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1252 | /* odd field data: */ |
| 1253 | jump_addr = c1 + TAB_FACTOR * nlines / 2; |
| 1254 | jump = virt_to_bus(jump_addr); |
| 1255 | #ifdef PLANB_GSCANLINE |
| 1256 | for (i = 1; i < nlines; i += stepsize) { |
| 1257 | tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count, |
| 1258 | virt_to_bus(pb->rawbuf[pagei |
| 1259 | + i * scanline / PAGE_SIZE]), jump); |
| 1260 | } |
| 1261 | #else |
| 1262 | i = 1; |
| 1263 | leftover1 = 0; |
| 1264 | pagei = pb->gbuf_idx[fr]; |
| 1265 | if(nlines <= 1) |
| 1266 | goto skip; |
| 1267 | do { |
| 1268 | int j; |
| 1269 | |
| 1270 | base = virt_to_bus(pb->rawbuf[pagei]); |
| 1271 | nlpp = (PAGE_SIZE - leftover1) / count / stepsize; |
| 1272 | if(leftover1 >= count) { |
| 1273 | tab_cmd_gen(c1++, INPUT_MORE | KEY_STREAM0 | BR_IFSET, count, |
| 1274 | base + leftover1 - count, jump); |
| 1275 | i += stepsize; |
| 1276 | } |
| 1277 | for(j = 0; j < nlpp && i < nlines; j++, i += stepsize, c1++) |
| 1278 | tab_cmd_gen(c1, INPUT_MORE | KEY_STREAM0 | BR_IFSET, count, |
| 1279 | base + count * (j * stepsize + 1) + leftover1, jump); |
| 1280 | if(i < nlines) { |
| 1281 | int lov0 = PAGE_SIZE - count * nlpp * stepsize - leftover1; |
| 1282 | |
| 1283 | if(lov0 == 0) |
| 1284 | leftover1 = 0; |
| 1285 | else { |
| 1286 | if(lov0 > count) { |
| 1287 | pb->l_to_addr[fr][pb->lnum[fr]] = pb->rawbuf[pagei] |
| 1288 | + count * (nlpp * stepsize + 1) + leftover1; |
| 1289 | pb->l_to_next_idx[fr][pb->lnum[fr]] = pagei + 1; |
| 1290 | pb->l_to_next_size[fr][pb->lnum[fr]] = count * stepsize |
| 1291 | - lov0; |
| 1292 | tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count, |
| 1293 | virt_to_bus(pb->rawbuf[pb->l_fr_addr_idx[fr] |
| 1294 | + pb->lnum[fr]]), jump); |
| 1295 | if(++pb->lnum[fr] > MAX_LNUM) |
| 1296 | pb->lnum[fr]--; |
| 1297 | i += stepsize; |
| 1298 | } |
| 1299 | leftover1 = count * stepsize - lov0; |
| 1300 | } |
| 1301 | } |
| 1302 | pagei++; |
| 1303 | } while(i < nlines); |
| 1304 | skip: |
| 1305 | tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, jump); |
| 1306 | c1 = jump_addr; |
| 1307 | #endif /* PLANB_GSCANLINE */ |
| 1308 | |
| 1309 | cmd_tab_data_end: |
| 1310 | tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->intr_stat), |
| 1311 | (fr << 9) | PLANB_FRM_IRQ | PLANB_GEN_IRQ); |
| 1312 | /* stop it */ |
| 1313 | tab_cmd_dbdma(c1, DBDMA_STOP, 0); |
| 1314 | |
| 1315 | eieio(); |
| 1316 | return c1; |
| 1317 | } |
| 1318 | |
| 1319 | static void planb_irq(int irq, void *dev_id, struct pt_regs * regs) |
| 1320 | { |
| 1321 | unsigned int stat, astat; |
| 1322 | struct planb *pb = (struct planb *)dev_id; |
| 1323 | |
| 1324 | IDEBUG("PlanB: planb_irq()\n"); |
| 1325 | |
| 1326 | /* get/clear interrupt status bits */ |
| 1327 | eieio(); |
| 1328 | stat = in_le32(&pb->planb_base->intr_stat); |
| 1329 | astat = stat & pb->intr_mask; |
| 1330 | out_le32(&pb->planb_base->intr_stat, PLANB_FRM_IRQ |
| 1331 | & ~astat & stat & ~PLANB_GEN_IRQ); |
| 1332 | IDEBUG("PlanB: stat = %X, astat = %X\n", stat, astat); |
| 1333 | |
| 1334 | if(astat & PLANB_FRM_IRQ) { |
| 1335 | unsigned int fr = stat >> 9; |
| 1336 | #ifndef PLANB_GSCANLINE |
| 1337 | int i; |
| 1338 | #endif |
| 1339 | IDEBUG("PlanB: PLANB_FRM_IRQ\n"); |
| 1340 | |
| 1341 | pb->gcount++; |
| 1342 | |
| 1343 | IDEBUG("PlanB: grab %d: fr = %d, gcount = %d\n", |
| 1344 | pb->grabbing, fr, pb->gcount); |
| 1345 | #ifndef PLANB_GSCANLINE |
| 1346 | IDEBUG("PlanB: %d * %d bytes are being copied over\n", |
| 1347 | pb->lnum[fr], pb->lsize[fr]); |
| 1348 | for(i = 0; i < pb->lnum[fr]; i++) { |
| 1349 | int first = pb->lsize[fr] - pb->l_to_next_size[fr][i]; |
| 1350 | |
| 1351 | memcpy(pb->l_to_addr[fr][i], |
| 1352 | pb->rawbuf[pb->l_fr_addr_idx[fr] + i], |
| 1353 | first); |
| 1354 | memcpy(pb->rawbuf[pb->l_to_next_idx[fr][i]], |
| 1355 | pb->rawbuf[pb->l_fr_addr_idx[fr] + i] + first, |
| 1356 | pb->l_to_next_size[fr][i]); |
| 1357 | } |
| 1358 | #endif |
| 1359 | pb->frame_stat[fr] = GBUFFER_DONE; |
| 1360 | pb->grabbing--; |
| 1361 | wake_up_interruptible(&pb->capq); |
| 1362 | return; |
| 1363 | } |
| 1364 | /* incorrect interrupts? */ |
| 1365 | pb->intr_mask = PLANB_CLR_IRQ; |
| 1366 | out_le32(&pb->planb_base->intr_stat, PLANB_CLR_IRQ); |
| 1367 | printk(KERN_ERR "PlanB: IRQ lockup, cleared intrrupts" |
| 1368 | " unconditionally\n"); |
| 1369 | } |
| 1370 | |
| 1371 | /******************************* |
| 1372 | * Device Operations functions * |
| 1373 | *******************************/ |
| 1374 | |
| 1375 | static int planb_open(struct video_device *dev, int mode) |
| 1376 | { |
| 1377 | struct planb *pb = (struct planb *)dev; |
| 1378 | |
| 1379 | if (pb->user == 0) { |
| 1380 | int err; |
| 1381 | if((err = planb_prepare_open(pb)) != 0) |
| 1382 | return err; |
| 1383 | } |
| 1384 | pb->user++; |
| 1385 | |
| 1386 | DEBUG("PlanB: device opened\n"); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1387 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1388 | } |
| 1389 | |
| 1390 | static void planb_close(struct video_device *dev) |
| 1391 | { |
| 1392 | struct planb *pb = (struct planb *)dev; |
| 1393 | |
| 1394 | if(pb->user < 1) /* ??? */ |
| 1395 | return; |
| 1396 | planb_lock(pb); |
| 1397 | if (pb->user == 1) { |
| 1398 | if (pb->overlay) { |
| 1399 | planb_dbdma_stop(&pb->planb_base->ch2); |
| 1400 | planb_dbdma_stop(&pb->planb_base->ch1); |
| 1401 | pb->overlay = 0; |
| 1402 | } |
| 1403 | planb_prepare_close(pb); |
| 1404 | } |
| 1405 | pb->user--; |
| 1406 | planb_unlock(pb); |
| 1407 | |
| 1408 | DEBUG("PlanB: device closed\n"); |
| 1409 | } |
| 1410 | |
| 1411 | static long planb_read(struct video_device *v, char *buf, unsigned long count, |
| 1412 | int nonblock) |
| 1413 | { |
| 1414 | DEBUG("planb: read request\n"); |
| 1415 | return -EINVAL; |
| 1416 | } |
| 1417 | |
| 1418 | static long planb_write(struct video_device *v, const char *buf, |
| 1419 | unsigned long count, int nonblock) |
| 1420 | { |
| 1421 | DEBUG("planb: write request\n"); |
| 1422 | return -EINVAL; |
| 1423 | } |
| 1424 | |
| 1425 | static int planb_ioctl(struct video_device *dev, unsigned int cmd, void *arg) |
| 1426 | { |
| 1427 | struct planb *pb=(struct planb *)dev; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1428 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1429 | switch (cmd) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1430 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1431 | case VIDIOCGCAP: |
| 1432 | { |
| 1433 | struct video_capability b; |
| 1434 | |
| 1435 | DEBUG("PlanB: IOCTL VIDIOCGCAP\n"); |
| 1436 | |
| 1437 | strcpy (b.name, pb->video_dev.name); |
| 1438 | b.type = VID_TYPE_OVERLAY | VID_TYPE_CLIPPING | |
| 1439 | VID_TYPE_FRAMERAM | VID_TYPE_SCALES | |
| 1440 | VID_TYPE_CAPTURE; |
| 1441 | b.channels = 2; /* composite & svhs */ |
| 1442 | b.audios = 0; |
| 1443 | b.maxwidth = PLANB_MAXPIXELS; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1444 | b.maxheight = PLANB_MAXLINES; |
| 1445 | b.minwidth = 32; /* wild guess */ |
| 1446 | b.minheight = 32; |
| 1447 | if (copy_to_user(arg,&b,sizeof(b))) |
| 1448 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1449 | return 0; |
| 1450 | } |
| 1451 | case VIDIOCSFBUF: |
| 1452 | { |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1453 | struct video_buffer v; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1454 | unsigned short bpp; |
| 1455 | unsigned int fmt; |
| 1456 | |
| 1457 | DEBUG("PlanB: IOCTL VIDIOCSFBUF\n"); |
| 1458 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1459 | if (!capable(CAP_SYS_ADMIN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1460 | || !capable(CAP_SYS_RAWIO)) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1461 | return -EPERM; |
| 1462 | if (copy_from_user(&v, arg,sizeof(v))) |
| 1463 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | planb_lock(pb); |
| 1465 | switch(v.depth) { |
| 1466 | case 8: |
| 1467 | bpp = 1; |
| 1468 | fmt = PLANB_GRAY; |
| 1469 | break; |
| 1470 | case 15: |
| 1471 | case 16: |
| 1472 | bpp = 2; |
| 1473 | fmt = PLANB_COLOUR15; |
| 1474 | break; |
| 1475 | case 24: |
| 1476 | case 32: |
| 1477 | bpp = 4; |
| 1478 | fmt = PLANB_COLOUR32; |
| 1479 | break; |
| 1480 | default: |
| 1481 | planb_unlock(pb); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1482 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1483 | } |
| 1484 | if (bpp * v.width > v.bytesperline) { |
| 1485 | planb_unlock(pb); |
| 1486 | return -EINVAL; |
| 1487 | } |
| 1488 | pb->win.bpp = bpp; |
| 1489 | pb->win.color_fmt = fmt; |
| 1490 | pb->frame_buffer_phys = (unsigned long) v.base; |
| 1491 | pb->win.sheight = v.height; |
| 1492 | pb->win.swidth = v.width; |
| 1493 | pb->picture.depth = pb->win.depth = v.depth; |
| 1494 | pb->win.bpl = pb->win.bpp * pb->win.swidth; |
| 1495 | pb->win.pad = v.bytesperline - pb->win.bpl; |
| 1496 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1497 | DEBUG("PlanB: Display at %p is %d by %d, bytedepth %d," |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1498 | " bpl %d (+ %d)\n", v.base, v.width,v.height, |
| 1499 | pb->win.bpp, pb->win.bpl, pb->win.pad); |
| 1500 | |
| 1501 | pb->cmd_buff_inited = 0; |
| 1502 | if(pb->overlay) { |
| 1503 | suspend_overlay(pb); |
| 1504 | fill_cmd_buff(pb); |
| 1505 | resume_overlay(pb); |
| 1506 | } |
| 1507 | planb_unlock(pb); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1508 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1509 | } |
| 1510 | case VIDIOCGFBUF: |
| 1511 | { |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1512 | struct video_buffer v; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1513 | |
| 1514 | DEBUG("PlanB: IOCTL VIDIOCGFBUF\n"); |
| 1515 | |
| 1516 | v.base = (void *)pb->frame_buffer_phys; |
| 1517 | v.height = pb->win.sheight; |
| 1518 | v.width = pb->win.swidth; |
| 1519 | v.depth = pb->win.depth; |
| 1520 | v.bytesperline = pb->win.bpl + pb->win.pad; |
| 1521 | if (copy_to_user(arg, &v, sizeof(v))) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1522 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1523 | return 0; |
| 1524 | } |
| 1525 | case VIDIOCCAPTURE: |
| 1526 | { |
| 1527 | int i; |
| 1528 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1529 | if(copy_from_user(&i, arg, sizeof(i))) |
| 1530 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1531 | if(i==0) { |
| 1532 | DEBUG("PlanB: IOCTL VIDIOCCAPTURE Stop\n"); |
| 1533 | |
| 1534 | if (!(pb->overlay)) |
| 1535 | return 0; |
| 1536 | planb_lock(pb); |
| 1537 | pb->overlay = 0; |
| 1538 | overlay_stop(pb); |
| 1539 | planb_unlock(pb); |
| 1540 | } else { |
| 1541 | DEBUG("PlanB: IOCTL VIDIOCCAPTURE Start\n"); |
| 1542 | |
| 1543 | if (pb->frame_buffer_phys == 0 || |
| 1544 | pb->win.width == 0 || |
| 1545 | pb->win.height == 0) |
| 1546 | return -EINVAL; |
| 1547 | if (pb->overlay) |
| 1548 | return 0; |
| 1549 | planb_lock(pb); |
| 1550 | pb->overlay = 1; |
| 1551 | if(!(pb->cmd_buff_inited)) |
| 1552 | fill_cmd_buff(pb); |
| 1553 | overlay_start(pb); |
| 1554 | planb_unlock(pb); |
| 1555 | } |
| 1556 | return 0; |
| 1557 | } |
| 1558 | case VIDIOCGCHAN: |
| 1559 | { |
| 1560 | struct video_channel v; |
| 1561 | |
| 1562 | DEBUG("PlanB: IOCTL VIDIOCGCHAN\n"); |
| 1563 | |
| 1564 | if(copy_from_user(&v, arg,sizeof(v))) |
| 1565 | return -EFAULT; |
| 1566 | v.flags = 0; |
| 1567 | v.tuners = 0; |
| 1568 | v.type = VIDEO_TYPE_CAMERA; |
| 1569 | v.norm = pb->win.norm; |
| 1570 | switch(v.channel) |
| 1571 | { |
| 1572 | case 0: |
| 1573 | strcpy(v.name,"Composite"); |
| 1574 | break; |
| 1575 | case 1: |
| 1576 | strcpy(v.name,"SVHS"); |
| 1577 | break; |
| 1578 | default: |
| 1579 | return -EINVAL; |
| 1580 | break; |
| 1581 | } |
| 1582 | if(copy_to_user(arg,&v,sizeof(v))) |
| 1583 | return -EFAULT; |
| 1584 | |
| 1585 | return 0; |
| 1586 | } |
| 1587 | case VIDIOCSCHAN: |
| 1588 | { |
| 1589 | struct video_channel v; |
| 1590 | |
| 1591 | DEBUG("PlanB: IOCTL VIDIOCSCHAN\n"); |
| 1592 | |
| 1593 | if(copy_from_user(&v, arg, sizeof(v))) |
| 1594 | return -EFAULT; |
| 1595 | |
| 1596 | if (v.norm != pb->win.norm) { |
| 1597 | int i, maxlines; |
| 1598 | |
| 1599 | switch (v.norm) |
| 1600 | { |
| 1601 | case VIDEO_MODE_PAL: |
| 1602 | case VIDEO_MODE_SECAM: |
| 1603 | maxlines = PLANB_MAXLINES; |
| 1604 | break; |
| 1605 | case VIDEO_MODE_NTSC: |
| 1606 | maxlines = PLANB_NTSC_MAXLINES; |
| 1607 | break; |
| 1608 | default: |
| 1609 | return -EINVAL; |
| 1610 | break; |
| 1611 | } |
| 1612 | planb_lock(pb); |
| 1613 | /* empty the grabbing queue */ |
| 1614 | wait_event(pb->capq, !pb->grabbing); |
| 1615 | pb->maxlines = maxlines; |
| 1616 | pb->win.norm = v.norm; |
| 1617 | /* Stop overlay if running */ |
| 1618 | suspend_overlay(pb); |
| 1619 | for(i = 0; i < MAX_GBUFFERS; i++) |
| 1620 | pb->gnorm_switch[i] = 1; |
| 1621 | /* I know it's an overkill, but.... */ |
| 1622 | fill_cmd_buff(pb); |
| 1623 | /* ok, now init it accordingly */ |
| 1624 | saa_init_regs (pb); |
| 1625 | /* restart overlay if it was running */ |
| 1626 | resume_overlay(pb); |
| 1627 | planb_unlock(pb); |
| 1628 | } |
| 1629 | |
| 1630 | switch(v.channel) |
| 1631 | { |
| 1632 | case 0: /* Composite */ |
| 1633 | saa_set (SAA7196_IOCC, |
| 1634 | ((saa_regs[pb->win.norm][SAA7196_IOCC] & |
| 1635 | ~7) | 3), pb); |
| 1636 | break; |
| 1637 | case 1: /* SVHS */ |
| 1638 | saa_set (SAA7196_IOCC, |
| 1639 | ((saa_regs[pb->win.norm][SAA7196_IOCC] & |
| 1640 | ~7) | 4), pb); |
| 1641 | break; |
| 1642 | default: |
| 1643 | return -EINVAL; |
| 1644 | break; |
| 1645 | } |
| 1646 | |
| 1647 | return 0; |
| 1648 | } |
| 1649 | case VIDIOCGPICT: |
| 1650 | { |
| 1651 | struct video_picture vp = pb->picture; |
| 1652 | |
| 1653 | DEBUG("PlanB: IOCTL VIDIOCGPICT\n"); |
| 1654 | |
| 1655 | switch(pb->win.color_fmt) { |
| 1656 | case PLANB_GRAY: |
| 1657 | vp.palette = VIDEO_PALETTE_GREY; |
| 1658 | case PLANB_COLOUR15: |
| 1659 | vp.palette = VIDEO_PALETTE_RGB555; |
| 1660 | break; |
| 1661 | case PLANB_COLOUR32: |
| 1662 | vp.palette = VIDEO_PALETTE_RGB32; |
| 1663 | break; |
| 1664 | default: |
| 1665 | vp.palette = 0; |
| 1666 | break; |
| 1667 | } |
| 1668 | |
| 1669 | if(copy_to_user(arg,&vp,sizeof(vp))) |
| 1670 | return -EFAULT; |
| 1671 | return 0; |
| 1672 | } |
| 1673 | case VIDIOCSPICT: |
| 1674 | { |
| 1675 | struct video_picture vp; |
| 1676 | |
| 1677 | DEBUG("PlanB: IOCTL VIDIOCSPICT\n"); |
| 1678 | |
| 1679 | if(copy_from_user(&vp,arg,sizeof(vp))) |
| 1680 | return -EFAULT; |
| 1681 | pb->picture = vp; |
| 1682 | /* Should we do sanity checks here? */ |
| 1683 | saa_set (SAA7196_BRIG, (unsigned char) |
| 1684 | ((pb->picture.brightness) >> 8), pb); |
| 1685 | saa_set (SAA7196_HUEC, (unsigned char) |
| 1686 | ((pb->picture.hue) >> 8) ^ 0x80, pb); |
| 1687 | saa_set (SAA7196_CSAT, (unsigned char) |
| 1688 | ((pb->picture.colour) >> 9), pb); |
| 1689 | saa_set (SAA7196_CONT, (unsigned char) |
| 1690 | ((pb->picture.contrast) >> 9), pb); |
| 1691 | |
| 1692 | return 0; |
| 1693 | } |
| 1694 | case VIDIOCSWIN: |
| 1695 | { |
| 1696 | struct video_window vw; |
| 1697 | struct video_clip clip; |
| 1698 | int i; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1699 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1700 | DEBUG("PlanB: IOCTL VIDIOCSWIN\n"); |
| 1701 | |
| 1702 | if(copy_from_user(&vw,arg,sizeof(vw))) |
| 1703 | return -EFAULT; |
| 1704 | |
| 1705 | planb_lock(pb); |
| 1706 | /* Stop overlay if running */ |
| 1707 | suspend_overlay(pb); |
| 1708 | pb->win.interlace = (vw.height > pb->maxlines/2)? 1: 0; |
| 1709 | if (pb->win.x != vw.x || |
| 1710 | pb->win.y != vw.y || |
| 1711 | pb->win.width != vw.width || |
| 1712 | pb->win.height != vw.height || |
| 1713 | !pb->cmd_buff_inited) { |
| 1714 | pb->win.x = vw.x; |
| 1715 | pb->win.y = vw.y; |
| 1716 | pb->win.width = vw.width; |
| 1717 | pb->win.height = vw.height; |
| 1718 | fill_cmd_buff(pb); |
| 1719 | } |
| 1720 | /* Reset clip mask */ |
| 1721 | memset ((void *) pb->mask, 0xff, (pb->maxlines |
| 1722 | * ((PLANB_MAXPIXELS + 7) & ~7)) / 8); |
| 1723 | /* Add any clip rects */ |
| 1724 | for (i = 0; i < vw.clipcount; i++) { |
| 1725 | if (copy_from_user(&clip, vw.clips + i, |
| 1726 | sizeof(struct video_clip))) |
| 1727 | return -EFAULT; |
| 1728 | add_clip(pb, &clip); |
| 1729 | } |
| 1730 | /* restart overlay if it was running */ |
| 1731 | resume_overlay(pb); |
| 1732 | planb_unlock(pb); |
| 1733 | return 0; |
| 1734 | } |
| 1735 | case VIDIOCGWIN: |
| 1736 | { |
| 1737 | struct video_window vw; |
| 1738 | |
| 1739 | DEBUG("PlanB: IOCTL VIDIOCGWIN\n"); |
| 1740 | |
| 1741 | vw.x=pb->win.x; |
| 1742 | vw.y=pb->win.y; |
| 1743 | vw.width=pb->win.width; |
| 1744 | vw.height=pb->win.height; |
| 1745 | vw.chromakey=0; |
| 1746 | vw.flags=0; |
| 1747 | if(pb->win.interlace) |
| 1748 | vw.flags|=VIDEO_WINDOW_INTERLACE; |
| 1749 | if(copy_to_user(arg,&vw,sizeof(vw))) |
| 1750 | return -EFAULT; |
| 1751 | return 0; |
| 1752 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1753 | case VIDIOCSYNC: { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1754 | int i; |
| 1755 | |
| 1756 | IDEBUG("PlanB: IOCTL VIDIOCSYNC\n"); |
| 1757 | |
| 1758 | if(copy_from_user((void *)&i,arg,sizeof(int))) |
| 1759 | return -EFAULT; |
| 1760 | |
| 1761 | IDEBUG("PlanB: sync to frame %d\n", i); |
| 1762 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1763 | if(i > (MAX_GBUFFERS - 1) || i < 0) |
| 1764 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1765 | chk_grab: |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1766 | switch (pb->frame_stat[i]) { |
| 1767 | case GBUFFER_UNUSED: |
| 1768 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | case GBUFFER_GRABBING: |
| 1770 | IDEBUG("PlanB: waiting for grab" |
| 1771 | " done (%d)\n", i); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1772 | interruptible_sleep_on(&pb->capq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1773 | if(signal_pending(current)) |
| 1774 | return -EINTR; |
| 1775 | goto chk_grab; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1776 | case GBUFFER_DONE: |
| 1777 | pb->frame_stat[i] = GBUFFER_UNUSED; |
| 1778 | break; |
| 1779 | } |
| 1780 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1781 | } |
| 1782 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1783 | case VIDIOCMCAPTURE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1784 | { |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1785 | struct video_mmap vm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1786 | volatile unsigned int status; |
| 1787 | |
| 1788 | IDEBUG("PlanB: IOCTL VIDIOCMCAPTURE\n"); |
| 1789 | |
| 1790 | if(copy_from_user((void *) &vm,(void *)arg,sizeof(vm))) |
| 1791 | return -EFAULT; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1792 | status = pb->frame_stat[vm.frame]; |
| 1793 | if (status != GBUFFER_UNUSED) |
| 1794 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1795 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1796 | return vgrab(pb, &vm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1797 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1798 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1799 | case VIDIOCGMBUF: |
| 1800 | { |
| 1801 | int i; |
| 1802 | struct video_mbuf vm; |
| 1803 | |
| 1804 | DEBUG("PlanB: IOCTL VIDIOCGMBUF\n"); |
| 1805 | |
| 1806 | memset(&vm, 0 , sizeof(vm)); |
| 1807 | vm.size = PLANB_MAX_FBUF * MAX_GBUFFERS; |
| 1808 | vm.frames = MAX_GBUFFERS; |
| 1809 | for(i = 0; i<MAX_GBUFFERS; i++) |
| 1810 | vm.offsets[i] = PLANB_MAX_FBUF * i; |
| 1811 | if(copy_to_user((void *)arg, (void *)&vm, sizeof(vm))) |
| 1812 | return -EFAULT; |
| 1813 | return 0; |
| 1814 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1815 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1816 | case PLANBIOCGSAAREGS: |
| 1817 | { |
| 1818 | struct planb_saa_regs preg; |
| 1819 | |
| 1820 | DEBUG("PlanB: IOCTL PLANBIOCGSAAREGS\n"); |
| 1821 | |
| 1822 | if(copy_from_user(&preg, arg, sizeof(preg))) |
| 1823 | return -EFAULT; |
| 1824 | if(preg.addr >= SAA7196_NUMREGS) |
| 1825 | return -EINVAL; |
| 1826 | preg.val = saa_regs[pb->win.norm][preg.addr]; |
| 1827 | if(copy_to_user((void *)arg, (void *)&preg, |
| 1828 | sizeof(preg))) |
| 1829 | return -EFAULT; |
| 1830 | return 0; |
| 1831 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1832 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1833 | case PLANBIOCSSAAREGS: |
| 1834 | { |
| 1835 | struct planb_saa_regs preg; |
| 1836 | |
| 1837 | DEBUG("PlanB: IOCTL PLANBIOCSSAAREGS\n"); |
| 1838 | |
| 1839 | if(copy_from_user(&preg, arg, sizeof(preg))) |
| 1840 | return -EFAULT; |
| 1841 | if(preg.addr >= SAA7196_NUMREGS) |
| 1842 | return -EINVAL; |
| 1843 | saa_set (preg.addr, preg.val, pb); |
| 1844 | return 0; |
| 1845 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1846 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1847 | case PLANBIOCGSTAT: |
| 1848 | { |
| 1849 | struct planb_stat_regs pstat; |
| 1850 | |
| 1851 | DEBUG("PlanB: IOCTL PLANBIOCGSTAT\n"); |
| 1852 | |
| 1853 | pstat.ch1_stat = in_le32(&pb->planb_base->ch1.status); |
| 1854 | pstat.ch2_stat = in_le32(&pb->planb_base->ch2.status); |
| 1855 | pstat.saa_stat0 = saa_status(0, pb); |
| 1856 | pstat.saa_stat1 = saa_status(1, pb); |
| 1857 | |
| 1858 | if(copy_to_user((void *)arg, (void *)&pstat, |
| 1859 | sizeof(pstat))) |
| 1860 | return -EFAULT; |
| 1861 | return 0; |
| 1862 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1863 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1864 | case PLANBIOCSMODE: { |
| 1865 | int v; |
| 1866 | |
| 1867 | DEBUG("PlanB: IOCTL PLANBIOCSMODE\n"); |
| 1868 | |
| 1869 | if(copy_from_user(&v, arg, sizeof(v))) |
| 1870 | return -EFAULT; |
| 1871 | |
| 1872 | switch(v) |
| 1873 | { |
| 1874 | case PLANB_TV_MODE: |
| 1875 | saa_set (SAA7196_STDC, |
| 1876 | (saa_regs[pb->win.norm][SAA7196_STDC] & |
| 1877 | 0x7f), pb); |
| 1878 | break; |
| 1879 | case PLANB_VTR_MODE: |
| 1880 | saa_set (SAA7196_STDC, |
| 1881 | (saa_regs[pb->win.norm][SAA7196_STDC] | |
| 1882 | 0x80), pb); |
| 1883 | break; |
| 1884 | default: |
| 1885 | return -EINVAL; |
| 1886 | break; |
| 1887 | } |
| 1888 | pb->win.mode = v; |
| 1889 | return 0; |
| 1890 | } |
| 1891 | case PLANBIOCGMODE: { |
| 1892 | int v=pb->win.mode; |
| 1893 | |
| 1894 | DEBUG("PlanB: IOCTL PLANBIOCGMODE\n"); |
| 1895 | |
| 1896 | if(copy_to_user(arg,&v,sizeof(v))) |
| 1897 | return -EFAULT; |
| 1898 | return 0; |
| 1899 | } |
| 1900 | #ifdef PLANB_GSCANLINE |
| 1901 | case PLANBG_GRAB_BPL: { |
| 1902 | int v=pb->gbytes_per_line; |
| 1903 | |
| 1904 | DEBUG("PlanB: IOCTL PLANBG_GRAB_BPL\n"); |
| 1905 | |
| 1906 | if(copy_to_user(arg,&v,sizeof(v))) |
| 1907 | return -EFAULT; |
| 1908 | return 0; |
| 1909 | } |
| 1910 | #endif /* PLANB_GSCANLINE */ |
| 1911 | case PLANB_INTR_DEBUG: { |
| 1912 | int i; |
| 1913 | |
| 1914 | DEBUG("PlanB: IOCTL PLANB_INTR_DEBUG\n"); |
| 1915 | |
| 1916 | if(copy_from_user(&i, arg, sizeof(i))) |
| 1917 | return -EFAULT; |
| 1918 | |
| 1919 | /* avoid hang ups all together */ |
| 1920 | for (i = 0; i < MAX_GBUFFERS; i++) { |
| 1921 | if(pb->frame_stat[i] == GBUFFER_GRABBING) { |
| 1922 | pb->frame_stat[i] = GBUFFER_DONE; |
| 1923 | } |
| 1924 | } |
| 1925 | if(pb->grabbing) |
| 1926 | pb->grabbing--; |
| 1927 | wake_up_interruptible(&pb->capq); |
| 1928 | return 0; |
| 1929 | } |
| 1930 | case PLANB_INV_REGS: { |
| 1931 | int i; |
| 1932 | struct planb_any_regs any; |
| 1933 | |
| 1934 | DEBUG("PlanB: IOCTL PLANB_INV_REGS\n"); |
| 1935 | |
| 1936 | if(copy_from_user(&any, arg, sizeof(any))) |
| 1937 | return -EFAULT; |
| 1938 | if(any.offset < 0 || any.offset + any.bytes > 0x400) |
| 1939 | return -EINVAL; |
| 1940 | if(any.bytes > 128) |
| 1941 | return -EINVAL; |
| 1942 | for (i = 0; i < any.bytes; i++) { |
| 1943 | any.data[i] = |
| 1944 | in_8((unsigned char *)pb->planb_base |
| 1945 | + any.offset + i); |
| 1946 | } |
| 1947 | if(copy_to_user(arg,&any,sizeof(any))) |
| 1948 | return -EFAULT; |
| 1949 | return 0; |
| 1950 | } |
| 1951 | default: |
| 1952 | { |
| 1953 | DEBUG("PlanB: Unimplemented IOCTL\n"); |
| 1954 | return -ENOIOCTLCMD; |
| 1955 | } |
| 1956 | /* Some IOCTLs are currently unsupported on PlanB */ |
| 1957 | case VIDIOCGTUNER: { |
| 1958 | DEBUG("PlanB: IOCTL VIDIOCGTUNER\n"); |
| 1959 | goto unimplemented; } |
| 1960 | case VIDIOCSTUNER: { |
| 1961 | DEBUG("PlanB: IOCTL VIDIOCSTUNER\n"); |
| 1962 | goto unimplemented; } |
| 1963 | case VIDIOCSFREQ: { |
| 1964 | DEBUG("PlanB: IOCTL VIDIOCSFREQ\n"); |
| 1965 | goto unimplemented; } |
| 1966 | case VIDIOCGFREQ: { |
| 1967 | DEBUG("PlanB: IOCTL VIDIOCGFREQ\n"); |
| 1968 | goto unimplemented; } |
| 1969 | case VIDIOCKEY: { |
| 1970 | DEBUG("PlanB: IOCTL VIDIOCKEY\n"); |
| 1971 | goto unimplemented; } |
| 1972 | case VIDIOCSAUDIO: { |
| 1973 | DEBUG("PlanB: IOCTL VIDIOCSAUDIO\n"); |
| 1974 | goto unimplemented; } |
| 1975 | case VIDIOCGAUDIO: { |
| 1976 | DEBUG("PlanB: IOCTL VIDIOCGAUDIO\n"); |
| 1977 | goto unimplemented; } |
| 1978 | unimplemented: |
| 1979 | DEBUG(" Unimplemented\n"); |
| 1980 | return -ENOIOCTLCMD; |
| 1981 | } |
| 1982 | return 0; |
| 1983 | } |
| 1984 | |
| 1985 | static int planb_mmap(struct vm_area_struct *vma, struct video_device *dev, const char *adr, unsigned long size) |
| 1986 | { |
| 1987 | int i; |
| 1988 | struct planb *pb = (struct planb *)dev; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1989 | unsigned long start = (unsigned long)adr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1990 | |
| 1991 | if (size > MAX_GBUFFERS * PLANB_MAX_FBUF) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1992 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1993 | if (!pb->rawbuf) { |
| 1994 | int err; |
| 1995 | if((err=grabbuf_alloc(pb))) |
| 1996 | return err; |
| 1997 | } |
| 1998 | for (i = 0; i < pb->rawbuf_size; i++) { |
| 1999 | unsigned long pfn; |
| 2000 | |
| 2001 | pfn = virt_to_phys((void *)pb->rawbuf[i]) >> PAGE_SHIFT; |
| 2002 | if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED)) |
| 2003 | return -EAGAIN; |
| 2004 | start += PAGE_SIZE; |
| 2005 | if (size <= PAGE_SIZE) |
| 2006 | break; |
| 2007 | size -= PAGE_SIZE; |
| 2008 | } |
| 2009 | return 0; |
| 2010 | } |
| 2011 | |
| 2012 | static struct video_device planb_template= |
| 2013 | { |
| 2014 | .owner = THIS_MODULE, |
| 2015 | .name = PLANB_DEVICE_NAME, |
| 2016 | .type = VID_TYPE_OVERLAY, |
| 2017 | .hardware = VID_HARDWARE_PLANB, |
| 2018 | .open = planb_open, |
| 2019 | .close = planb_close, |
| 2020 | .read = planb_read, |
| 2021 | .write = planb_write, |
| 2022 | .ioctl = planb_ioctl, |
| 2023 | .mmap = planb_mmap, /* mmap? */ |
| 2024 | }; |
| 2025 | |
| 2026 | static int init_planb(struct planb *pb) |
| 2027 | { |
| 2028 | unsigned char saa_rev; |
| 2029 | int i, result; |
| 2030 | |
| 2031 | memset ((void *) &pb->win, 0, sizeof (struct planb_window)); |
| 2032 | /* Simple sanity check */ |
| 2033 | if(def_norm >= NUM_SUPPORTED_NORM || def_norm < 0) { |
| 2034 | printk(KERN_ERR "PlanB: Option(s) invalid\n"); |
| 2035 | return -2; |
| 2036 | } |
| 2037 | pb->win.norm = def_norm; |
| 2038 | pb->win.mode = PLANB_TV_MODE; /* TV mode */ |
| 2039 | pb->win.interlace=1; |
| 2040 | pb->win.x=0; |
| 2041 | pb->win.y=0; |
| 2042 | pb->win.width=768; /* 640 */ |
| 2043 | pb->win.height=576; /* 480 */ |
| 2044 | pb->maxlines=576; |
| 2045 | #if 0 |
| 2046 | btv->win.cropwidth=768; /* 640 */ |
| 2047 | btv->win.cropheight=576; /* 480 */ |
| 2048 | btv->win.cropx=0; |
| 2049 | btv->win.cropy=0; |
| 2050 | #endif |
| 2051 | pb->win.pad=0; |
| 2052 | pb->win.bpp=4; |
| 2053 | pb->win.depth=32; |
| 2054 | pb->win.color_fmt=PLANB_COLOUR32; |
| 2055 | pb->win.bpl=1024*pb->win.bpp; |
| 2056 | pb->win.swidth=1024; |
| 2057 | pb->win.sheight=768; |
| 2058 | #ifdef PLANB_GSCANLINE |
| 2059 | if((pb->gbytes_per_line = PLANB_MAXPIXELS * 4) > PAGE_SIZE |
| 2060 | || (pb->gbytes_per_line <= 0)) |
| 2061 | return -3; |
| 2062 | else { |
| 2063 | /* page align pb->gbytes_per_line for DMA purpose */ |
| 2064 | for(i = PAGE_SIZE; pb->gbytes_per_line < (i>>1);) |
| 2065 | i>>=1; |
| 2066 | pb->gbytes_per_line = i; |
| 2067 | } |
| 2068 | #endif |
| 2069 | pb->tab_size = PLANB_MAXLINES + 40; |
| 2070 | pb->suspend = 0; |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 2071 | mutex_init(&pb->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2072 | pb->ch1_cmd = 0; |
| 2073 | pb->ch2_cmd = 0; |
| 2074 | pb->mask = 0; |
| 2075 | pb->priv_space = 0; |
| 2076 | pb->offset = 0; |
| 2077 | pb->user = 0; |
| 2078 | pb->overlay = 0; |
| 2079 | init_waitqueue_head(&pb->suspendq); |
| 2080 | pb->cmd_buff_inited = 0; |
| 2081 | pb->frame_buffer_phys = 0; |
| 2082 | |
| 2083 | /* Reset DMA controllers */ |
| 2084 | planb_dbdma_stop(&pb->planb_base->ch2); |
| 2085 | planb_dbdma_stop(&pb->planb_base->ch1); |
| 2086 | |
| 2087 | saa_rev = (saa_status(0, pb) & 0xf0) >> 4; |
| 2088 | printk(KERN_INFO "PlanB: SAA7196 video processor rev. %d\n", saa_rev); |
| 2089 | /* Initialize the SAA registers in memory and on chip */ |
| 2090 | saa_init_regs (pb); |
| 2091 | |
| 2092 | /* clear interrupt mask */ |
| 2093 | pb->intr_mask = PLANB_CLR_IRQ; |
| 2094 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2095 | result = request_irq(pb->irq, planb_irq, 0, "PlanB", (void *)pb); |
| 2096 | if (result < 0) { |
| 2097 | if (result==-EINVAL) |
| 2098 | printk(KERN_ERR "PlanB: Bad irq number (%d) " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2099 | "or handler\n", (int)pb->irq); |
| 2100 | else if (result==-EBUSY) |
| 2101 | printk(KERN_ERR "PlanB: I don't know why, " |
| 2102 | "but IRQ %d is busy\n", (int)pb->irq); |
| 2103 | return result; |
| 2104 | } |
| 2105 | disable_irq(pb->irq); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2106 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2107 | /* Now add the template and register the device unit. */ |
| 2108 | memcpy(&pb->video_dev,&planb_template,sizeof(planb_template)); |
| 2109 | |
| 2110 | pb->picture.brightness=0x90<<8; |
| 2111 | pb->picture.contrast = 0x70 << 8; |
| 2112 | pb->picture.colour = 0x70<<8; |
| 2113 | pb->picture.hue = 0x8000; |
| 2114 | pb->picture.whiteness = 0; |
| 2115 | pb->picture.depth = pb->win.depth; |
| 2116 | |
| 2117 | pb->frame_stat=NULL; |
| 2118 | init_waitqueue_head(&pb->capq); |
| 2119 | for(i=0; i<MAX_GBUFFERS; i++) { |
| 2120 | pb->gbuf_idx[i] = PLANB_MAX_FBUF * i / PAGE_SIZE; |
| 2121 | pb->gwidth[i]=0; |
| 2122 | pb->gheight[i]=0; |
| 2123 | pb->gfmt[i]=0; |
| 2124 | pb->cap_cmd[i]=NULL; |
| 2125 | #ifndef PLANB_GSCANLINE |
| 2126 | pb->l_fr_addr_idx[i] = MAX_GBUFFERS * (PLANB_MAX_FBUF |
| 2127 | / PAGE_SIZE + 1) + MAX_LNUM * i; |
| 2128 | pb->lsize[i] = 0; |
| 2129 | pb->lnum[i] = 0; |
| 2130 | #endif |
| 2131 | } |
| 2132 | pb->rawbuf=NULL; |
| 2133 | pb->grabbing=0; |
| 2134 | |
| 2135 | /* enable interrupts */ |
| 2136 | out_le32(&pb->planb_base->intr_stat, PLANB_CLR_IRQ); |
| 2137 | pb->intr_mask = PLANB_FRM_IRQ; |
| 2138 | enable_irq(pb->irq); |
| 2139 | |
| 2140 | if(video_register_device(&pb->video_dev, VFL_TYPE_GRABBER, video_nr)<0) |
| 2141 | return -1; |
| 2142 | |
| 2143 | return 0; |
| 2144 | } |
| 2145 | |
| 2146 | /* |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2147 | * Scan for a PlanB controller, request the irq and map the io memory |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2148 | */ |
| 2149 | |
| 2150 | static int find_planb(void) |
| 2151 | { |
| 2152 | struct planb *pb; |
| 2153 | struct device_node *planb_devices; |
| 2154 | unsigned char dev_fn, confreg, bus; |
| 2155 | unsigned int old_base, new_base; |
| 2156 | unsigned int irq; |
| 2157 | struct pci_dev *pdev; |
| 2158 | int rc; |
| 2159 | |
Benjamin Herrenschmidt | e822250 | 2006-03-28 23:15:54 +1100 | [diff] [blame] | 2160 | if (!machine_is(powermac)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2161 | return 0; |
| 2162 | |
| 2163 | planb_devices = find_devices("planb"); |
| 2164 | if (planb_devices == 0) { |
| 2165 | planb_num=0; |
| 2166 | printk(KERN_WARNING "PlanB: no device found!\n"); |
| 2167 | return planb_num; |
| 2168 | } |
| 2169 | |
| 2170 | if (planb_devices->next != NULL) |
| 2171 | printk(KERN_ERR "Warning: only using first PlanB device!\n"); |
| 2172 | pb = &planbs[0]; |
| 2173 | planb_num = 1; |
| 2174 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2175 | if (planb_devices->n_addrs != 1) { |
| 2176 | printk (KERN_WARNING "PlanB: expecting 1 address for planb " |
| 2177 | "(got %d)", planb_devices->n_addrs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2178 | return 0; |
| 2179 | } |
| 2180 | |
| 2181 | if (planb_devices->n_intrs == 0) { |
| 2182 | printk(KERN_WARNING "PlanB: no intrs for device %s\n", |
| 2183 | planb_devices->full_name); |
| 2184 | return 0; |
| 2185 | } else { |
| 2186 | irq = planb_devices->intrs[0].line; |
| 2187 | } |
| 2188 | |
| 2189 | /* Initialize PlanB's PCI registers */ |
| 2190 | |
| 2191 | /* There is a bug with the way OF assigns addresses |
| 2192 | to the devices behind the chaos bridge. |
| 2193 | control needs only 0x1000 of space, but decodes only |
| 2194 | the upper 16 bits. It therefore occupies a full 64K. |
| 2195 | OF assigns the planb controller memory within this space; |
| 2196 | so we need to change that here in order to access planb. */ |
| 2197 | |
| 2198 | /* We remap to 0xf1000000 in hope that nobody uses it ! */ |
| 2199 | |
| 2200 | bus = (planb_devices->addrs[0].space >> 16) & 0xff; |
| 2201 | dev_fn = (planb_devices->addrs[0].space >> 8) & 0xff; |
| 2202 | confreg = planb_devices->addrs[0].space & 0xff; |
| 2203 | old_base = planb_devices->addrs[0].address; |
| 2204 | new_base = 0xf1000000; |
| 2205 | |
| 2206 | DEBUG("PlanB: Found on bus %d, dev %d, func %d, " |
| 2207 | "membase 0x%x (base reg. 0x%x)\n", |
| 2208 | bus, PCI_SLOT(dev_fn), PCI_FUNC(dev_fn), old_base, confreg); |
| 2209 | |
| 2210 | pdev = pci_find_slot (bus, dev_fn); |
| 2211 | if (!pdev) { |
| 2212 | printk(KERN_ERR "planb: cannot find slot\n"); |
| 2213 | goto err_out; |
| 2214 | } |
| 2215 | |
| 2216 | /* Enable response in memory space, bus mastering, |
| 2217 | use memory write and invalidate */ |
| 2218 | rc = pci_enable_device(pdev); |
| 2219 | if (rc) { |
| 2220 | printk(KERN_ERR "planb: cannot enable PCI device %s\n", |
| 2221 | pci_name(pdev)); |
| 2222 | goto err_out; |
| 2223 | } |
| 2224 | rc = pci_set_mwi(pdev); |
| 2225 | if (rc) { |
| 2226 | printk(KERN_ERR "planb: cannot enable MWI on PCI device %s\n", |
| 2227 | pci_name(pdev)); |
| 2228 | goto err_out_disable; |
| 2229 | } |
| 2230 | pci_set_master(pdev); |
| 2231 | |
| 2232 | /* Set the new base address */ |
| 2233 | pci_write_config_dword (pdev, confreg, new_base); |
| 2234 | |
| 2235 | planb_regs = (volatile struct planb_registers *) |
| 2236 | ioremap (new_base, 0x400); |
| 2237 | pb->planb_base = planb_regs; |
| 2238 | pb->planb_base_phys = (struct planb_registers *)new_base; |
| 2239 | pb->irq = irq; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2240 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2241 | return planb_num; |
| 2242 | |
| 2243 | err_out_disable: |
| 2244 | pci_disable_device(pdev); |
| 2245 | err_out: |
| 2246 | /* FIXME handle error */ /* comment moved from pci_find_slot, above */ |
| 2247 | return 0; |
| 2248 | } |
| 2249 | |
| 2250 | static void release_planb(void) |
| 2251 | { |
| 2252 | int i; |
| 2253 | struct planb *pb; |
| 2254 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2255 | for (i=0;i<planb_num; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2256 | { |
| 2257 | pb=&planbs[i]; |
| 2258 | |
| 2259 | /* stop and flash DMAs unconditionally */ |
| 2260 | planb_dbdma_stop(&pb->planb_base->ch2); |
| 2261 | planb_dbdma_stop(&pb->planb_base->ch1); |
| 2262 | |
| 2263 | /* clear and free interrupts */ |
| 2264 | pb->intr_mask = PLANB_CLR_IRQ; |
| 2265 | out_le32 (&pb->planb_base->intr_stat, PLANB_CLR_IRQ); |
| 2266 | free_irq(pb->irq, pb); |
| 2267 | |
| 2268 | /* make sure all allocated memory are freed */ |
| 2269 | planb_prepare_close(pb); |
| 2270 | |
| 2271 | printk(KERN_INFO "PlanB: unregistering with v4l\n"); |
| 2272 | video_unregister_device(&pb->video_dev); |
| 2273 | |
| 2274 | /* note that iounmap() does nothing on the PPC right now */ |
| 2275 | iounmap ((void *)pb->planb_base); |
| 2276 | } |
| 2277 | } |
| 2278 | |
| 2279 | static int __init init_planbs(void) |
| 2280 | { |
| 2281 | int i; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2282 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2283 | if (find_planb()<=0) |
| 2284 | return -EIO; |
| 2285 | |
| 2286 | for (i=0; i<planb_num; i++) { |
| 2287 | if (init_planb(&planbs[i])<0) { |
| 2288 | printk(KERN_ERR "PlanB: error registering device %d" |
| 2289 | " with v4l\n", i); |
| 2290 | release_planb(); |
| 2291 | return -EIO; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2292 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2293 | printk(KERN_INFO "PlanB: registered device %d with v4l\n", i); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2294 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2295 | return 0; |
| 2296 | } |
| 2297 | |
| 2298 | static void __exit exit_planbs(void) |
| 2299 | { |
| 2300 | release_planb(); |
| 2301 | } |
| 2302 | |
| 2303 | module_init(init_planbs); |
| 2304 | module_exit(exit_planbs); |