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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * drivers/sbus/char/vfc_dev.c | |
3 | * | |
4 | * Driver for the Videopix Frame Grabber. | |
5 | * | |
6 | * In order to use the VFC you need to program the video controller | |
7 | * chip. This chip is the Phillips SAA9051. You need to call their | |
8 | * documentation ordering line to get the docs. | |
9 | * | |
10 | * There is very little documentation on the VFC itself. There is | |
11 | * some useful info that can be found in the manuals that come with | |
12 | * the card. I will hopefully write some better docs at a later date. | |
13 | * | |
14 | * Copyright (C) 1996 Manish Vachharajani (mvachhar@noc.rutgers.edu) | |
15 | * */ | |
16 | ||
17 | #include <linux/module.h> | |
18 | #include <linux/kernel.h> | |
19 | #include <linux/string.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/errno.h> | |
1da177e4 | 22 | #include <linux/fs.h> |
1da177e4 LT |
23 | #include <linux/delay.h> |
24 | #include <linux/spinlock.h> | |
7b96dc02 | 25 | #include <linux/mutex.h> |
1da177e4 | 26 | #include <linux/mm.h> |
9aaf20cb | 27 | #include <linux/smp_lock.h> |
1da177e4 LT |
28 | |
29 | #include <asm/openprom.h> | |
30 | #include <asm/oplib.h> | |
31 | #include <asm/io.h> | |
32 | #include <asm/system.h> | |
33 | #include <asm/sbus.h> | |
34 | #include <asm/page.h> | |
35 | #include <asm/pgtable.h> | |
36 | #include <asm/uaccess.h> | |
37 | ||
38 | #define VFC_MAJOR (60) | |
39 | ||
40 | #if 0 | |
41 | #define VFC_IOCTL_DEBUG | |
42 | #endif | |
43 | ||
44 | #include "vfc.h" | |
45 | #include <asm/vfc_ioctls.h> | |
46 | ||
00977a59 | 47 | static const struct file_operations vfc_fops; |
1da177e4 LT |
48 | struct vfc_dev **vfc_dev_lst; |
49 | static char vfcstr[]="vfc"; | |
50 | static unsigned char saa9051_init_array[VFC_SAA9051_NR] = { | |
51 | 0x00, 0x64, 0x72, 0x52, | |
52 | 0x36, 0x18, 0xff, 0x20, | |
53 | 0xfc, 0x77, 0xe3, 0x50, | |
54 | 0x3e | |
55 | }; | |
56 | ||
57 | void vfc_lock_device(struct vfc_dev *dev) | |
58 | { | |
7b96dc02 | 59 | mutex_lock(&dev->device_lock_mtx); |
1da177e4 LT |
60 | } |
61 | ||
62 | void vfc_unlock_device(struct vfc_dev *dev) | |
63 | { | |
7b96dc02 | 64 | mutex_unlock(&dev->device_lock_mtx); |
1da177e4 LT |
65 | } |
66 | ||
67 | ||
68 | void vfc_captstat_reset(struct vfc_dev *dev) | |
69 | { | |
70 | dev->control_reg |= VFC_CONTROL_CAPTRESET; | |
71 | sbus_writel(dev->control_reg, &dev->regs->control); | |
72 | dev->control_reg &= ~VFC_CONTROL_CAPTRESET; | |
73 | sbus_writel(dev->control_reg, &dev->regs->control); | |
74 | dev->control_reg |= VFC_CONTROL_CAPTRESET; | |
75 | sbus_writel(dev->control_reg, &dev->regs->control); | |
76 | } | |
77 | ||
78 | void vfc_memptr_reset(struct vfc_dev *dev) | |
79 | { | |
80 | dev->control_reg |= VFC_CONTROL_MEMPTR; | |
81 | sbus_writel(dev->control_reg, &dev->regs->control); | |
82 | dev->control_reg &= ~VFC_CONTROL_MEMPTR; | |
83 | sbus_writel(dev->control_reg, &dev->regs->control); | |
84 | dev->control_reg |= VFC_CONTROL_MEMPTR; | |
85 | sbus_writel(dev->control_reg, &dev->regs->control); | |
86 | } | |
87 | ||
88 | int vfc_csr_init(struct vfc_dev *dev) | |
89 | { | |
90 | dev->control_reg = 0x80000000; | |
91 | sbus_writel(dev->control_reg, &dev->regs->control); | |
92 | udelay(200); | |
93 | dev->control_reg &= ~0x80000000; | |
94 | sbus_writel(dev->control_reg, &dev->regs->control); | |
95 | udelay(100); | |
96 | sbus_writel(0x0f000000, &dev->regs->i2c_magic2); | |
97 | ||
98 | vfc_memptr_reset(dev); | |
99 | ||
100 | dev->control_reg &= ~VFC_CONTROL_DIAGMODE; | |
101 | dev->control_reg &= ~VFC_CONTROL_CAPTURE; | |
102 | dev->control_reg |= 0x40000000; | |
103 | sbus_writel(dev->control_reg, &dev->regs->control); | |
104 | ||
105 | vfc_captstat_reset(dev); | |
106 | ||
107 | return 0; | |
108 | } | |
109 | ||
110 | int vfc_saa9051_init(struct vfc_dev *dev) | |
111 | { | |
112 | int i; | |
113 | ||
114 | for (i = 0; i < VFC_SAA9051_NR; i++) | |
115 | dev->saa9051_state_array[i] = saa9051_init_array[i]; | |
116 | ||
117 | vfc_i2c_sendbuf(dev,VFC_SAA9051_ADDR, | |
118 | dev->saa9051_state_array, VFC_SAA9051_NR); | |
119 | return 0; | |
120 | } | |
121 | ||
122 | int init_vfc_hw(struct vfc_dev *dev) | |
123 | { | |
124 | vfc_lock_device(dev); | |
125 | vfc_csr_init(dev); | |
126 | ||
127 | vfc_pcf8584_init(dev); | |
128 | vfc_init_i2c_bus(dev); /* hopefully this doesn't undo the magic | |
129 | sun code above*/ | |
130 | vfc_saa9051_init(dev); | |
131 | vfc_unlock_device(dev); | |
132 | return 0; | |
133 | } | |
134 | ||
135 | int init_vfc_devstruct(struct vfc_dev *dev, int instance) | |
136 | { | |
137 | dev->instance=instance; | |
8add2441 | 138 | mutex_init(&dev->device_lock_mtx); |
1da177e4 | 139 | dev->control_reg=0; |
1da177e4 LT |
140 | dev->busy=0; |
141 | return 0; | |
142 | } | |
143 | ||
144 | int init_vfc_device(struct sbus_dev *sdev,struct vfc_dev *dev, int instance) | |
145 | { | |
146 | if(dev == NULL) { | |
147 | printk(KERN_ERR "VFC: Bogus pointer passed\n"); | |
148 | return -ENOMEM; | |
149 | } | |
150 | printk("Initializing vfc%d\n",instance); | |
151 | dev->regs = NULL; | |
b7c690b5 | 152 | dev->regs = (volatile struct vfc_regs __iomem *) |
1da177e4 LT |
153 | sbus_ioremap(&sdev->resource[0], 0, |
154 | sizeof(struct vfc_regs), vfcstr); | |
155 | dev->which_io = sdev->reg_addrs[0].which_io; | |
156 | dev->phys_regs = (struct vfc_regs *) sdev->reg_addrs[0].phys_addr; | |
157 | if (dev->regs == NULL) | |
158 | return -EIO; | |
159 | ||
160 | printk("vfc%d: registers mapped at phys_addr: 0x%lx\n virt_addr: 0x%lx\n", | |
161 | instance,(unsigned long)sdev->reg_addrs[0].phys_addr,(unsigned long)dev->regs); | |
162 | ||
163 | if (init_vfc_devstruct(dev, instance)) | |
164 | return -EINVAL; | |
165 | if (init_vfc_hw(dev)) | |
166 | return -EIO; | |
1da177e4 LT |
167 | return 0; |
168 | } | |
169 | ||
170 | ||
171 | struct vfc_dev *vfc_get_dev_ptr(int instance) | |
172 | { | |
173 | return vfc_dev_lst[instance]; | |
174 | } | |
175 | ||
176 | static DEFINE_SPINLOCK(vfc_dev_lock); | |
177 | ||
178 | static int vfc_open(struct inode *inode, struct file *file) | |
179 | { | |
180 | struct vfc_dev *dev; | |
181 | ||
9aaf20cb | 182 | lock_kernel(); |
1da177e4 LT |
183 | spin_lock(&vfc_dev_lock); |
184 | dev = vfc_get_dev_ptr(iminor(inode)); | |
185 | if (dev == NULL) { | |
186 | spin_unlock(&vfc_dev_lock); | |
9aaf20cb | 187 | unlock_kernel(); |
1da177e4 LT |
188 | return -ENODEV; |
189 | } | |
190 | if (dev->busy) { | |
191 | spin_unlock(&vfc_dev_lock); | |
9aaf20cb | 192 | unlock_kernel(); |
1da177e4 LT |
193 | return -EBUSY; |
194 | } | |
195 | ||
196 | dev->busy = 1; | |
197 | spin_unlock(&vfc_dev_lock); | |
198 | ||
199 | vfc_lock_device(dev); | |
200 | ||
201 | vfc_csr_init(dev); | |
202 | vfc_pcf8584_init(dev); | |
203 | vfc_init_i2c_bus(dev); | |
204 | vfc_saa9051_init(dev); | |
205 | vfc_memptr_reset(dev); | |
206 | vfc_captstat_reset(dev); | |
207 | ||
208 | vfc_unlock_device(dev); | |
9aaf20cb | 209 | unlock_kernel(); |
1da177e4 LT |
210 | return 0; |
211 | } | |
212 | ||
213 | static int vfc_release(struct inode *inode,struct file *file) | |
214 | { | |
215 | struct vfc_dev *dev; | |
216 | ||
217 | spin_lock(&vfc_dev_lock); | |
218 | dev = vfc_get_dev_ptr(iminor(inode)); | |
219 | if (!dev || !dev->busy) { | |
220 | spin_unlock(&vfc_dev_lock); | |
221 | return -EINVAL; | |
222 | } | |
223 | dev->busy = 0; | |
224 | spin_unlock(&vfc_dev_lock); | |
225 | return 0; | |
226 | } | |
227 | ||
228 | static int vfc_debug(struct vfc_dev *dev, int cmd, void __user *argp) | |
229 | { | |
230 | struct vfc_debug_inout inout; | |
231 | unsigned char *buffer; | |
232 | ||
233 | if (!capable(CAP_SYS_ADMIN)) | |
234 | return -EPERM; | |
235 | ||
236 | switch(cmd) { | |
237 | case VFC_I2C_SEND: | |
238 | if(copy_from_user(&inout, argp, sizeof(inout))) | |
239 | return -EFAULT; | |
240 | ||
241 | buffer = kmalloc(inout.len, GFP_KERNEL); | |
242 | if (buffer == NULL) | |
243 | return -ENOMEM; | |
244 | ||
245 | if(copy_from_user(buffer, inout.buffer, inout.len)) { | |
246 | kfree(buffer); | |
247 | return -EFAULT; | |
248 | } | |
249 | ||
250 | ||
251 | vfc_lock_device(dev); | |
252 | inout.ret= | |
253 | vfc_i2c_sendbuf(dev,inout.addr & 0xff, | |
254 | buffer,inout.len); | |
255 | ||
256 | if (copy_to_user(argp,&inout,sizeof(inout))) { | |
8e485917 | 257 | vfc_unlock_device(dev); |
1da177e4 LT |
258 | kfree(buffer); |
259 | return -EFAULT; | |
260 | } | |
261 | vfc_unlock_device(dev); | |
262 | ||
263 | break; | |
264 | case VFC_I2C_RECV: | |
265 | if (copy_from_user(&inout, argp, sizeof(inout))) | |
266 | return -EFAULT; | |
267 | ||
2e6679a0 | 268 | buffer = kzalloc(inout.len, GFP_KERNEL); |
1da177e4 LT |
269 | if (buffer == NULL) |
270 | return -ENOMEM; | |
271 | ||
1da177e4 LT |
272 | vfc_lock_device(dev); |
273 | inout.ret= | |
274 | vfc_i2c_recvbuf(dev,inout.addr & 0xff | |
275 | ,buffer,inout.len); | |
276 | vfc_unlock_device(dev); | |
277 | ||
278 | if (copy_to_user(inout.buffer, buffer, inout.len)) { | |
279 | kfree(buffer); | |
280 | return -EFAULT; | |
281 | } | |
282 | if (copy_to_user(argp,&inout,sizeof(inout))) { | |
283 | kfree(buffer); | |
284 | return -EFAULT; | |
285 | } | |
286 | kfree(buffer); | |
287 | break; | |
288 | default: | |
289 | return -EINVAL; | |
290 | }; | |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
295 | int vfc_capture_start(struct vfc_dev *dev) | |
296 | { | |
297 | vfc_captstat_reset(dev); | |
298 | dev->control_reg = sbus_readl(&dev->regs->control); | |
299 | if((dev->control_reg & VFC_STATUS_CAPTURE)) { | |
300 | printk(KERN_ERR "vfc%d: vfc capture status not reset\n", | |
301 | dev->instance); | |
302 | return -EIO; | |
303 | } | |
304 | ||
305 | vfc_lock_device(dev); | |
306 | dev->control_reg &= ~VFC_CONTROL_CAPTURE; | |
307 | sbus_writel(dev->control_reg, &dev->regs->control); | |
308 | dev->control_reg |= VFC_CONTROL_CAPTURE; | |
309 | sbus_writel(dev->control_reg, &dev->regs->control); | |
310 | dev->control_reg &= ~VFC_CONTROL_CAPTURE; | |
311 | sbus_writel(dev->control_reg, &dev->regs->control); | |
312 | vfc_unlock_device(dev); | |
313 | ||
314 | return 0; | |
315 | } | |
316 | ||
317 | int vfc_capture_poll(struct vfc_dev *dev) | |
318 | { | |
319 | int timeout = 1000; | |
320 | ||
321 | while (!timeout--) { | |
b7c690b5 | 322 | if (sbus_readl(&dev->regs->control) & VFC_STATUS_CAPTURE) |
1da177e4 LT |
323 | break; |
324 | vfc_i2c_delay_no_busy(dev, 100); | |
325 | } | |
326 | if(!timeout) { | |
327 | printk(KERN_WARNING "vfc%d: capture timed out\n", | |
328 | dev->instance); | |
329 | return -ETIMEDOUT; | |
330 | } | |
331 | return 0; | |
332 | } | |
333 | ||
334 | ||
335 | ||
336 | static int vfc_set_control_ioctl(struct inode *inode, struct file *file, | |
337 | struct vfc_dev *dev, unsigned long arg) | |
338 | { | |
339 | int setcmd, ret = 0; | |
340 | ||
341 | if (copy_from_user(&setcmd,(void __user *)arg,sizeof(unsigned int))) | |
342 | return -EFAULT; | |
343 | ||
344 | VFC_IOCTL_DEBUG_PRINTK(("vfc%d: IOCTL(VFCSCTRL) arg=0x%x\n", | |
345 | dev->instance,setcmd)); | |
346 | ||
347 | switch(setcmd) { | |
348 | case MEMPRST: | |
349 | vfc_lock_device(dev); | |
350 | vfc_memptr_reset(dev); | |
351 | vfc_unlock_device(dev); | |
352 | ret=0; | |
353 | break; | |
354 | case CAPTRCMD: | |
355 | vfc_capture_start(dev); | |
356 | vfc_capture_poll(dev); | |
357 | break; | |
358 | case DIAGMODE: | |
359 | if(capable(CAP_SYS_ADMIN)) { | |
360 | vfc_lock_device(dev); | |
361 | dev->control_reg |= VFC_CONTROL_DIAGMODE; | |
362 | sbus_writel(dev->control_reg, &dev->regs->control); | |
363 | vfc_unlock_device(dev); | |
364 | ret = 0; | |
365 | } else { | |
366 | ret = -EPERM; | |
367 | } | |
368 | break; | |
369 | case NORMMODE: | |
370 | vfc_lock_device(dev); | |
371 | dev->control_reg &= ~VFC_CONTROL_DIAGMODE; | |
372 | sbus_writel(dev->control_reg, &dev->regs->control); | |
373 | vfc_unlock_device(dev); | |
374 | ret = 0; | |
375 | break; | |
376 | case CAPTRSTR: | |
377 | vfc_capture_start(dev); | |
378 | ret = 0; | |
379 | break; | |
380 | case CAPTRWAIT: | |
381 | vfc_capture_poll(dev); | |
382 | ret = 0; | |
383 | break; | |
384 | default: | |
385 | ret = -EINVAL; | |
386 | break; | |
387 | }; | |
388 | ||
389 | return ret; | |
390 | } | |
391 | ||
392 | ||
393 | int vfc_port_change_ioctl(struct inode *inode, struct file *file, | |
394 | struct vfc_dev *dev, unsigned long arg) | |
395 | { | |
396 | int ret = 0; | |
397 | int cmd; | |
398 | ||
399 | if(copy_from_user(&cmd, (void __user *)arg, sizeof(unsigned int))) { | |
400 | VFC_IOCTL_DEBUG_PRINTK(("vfc%d: User passed bogus pointer to " | |
401 | "vfc_port_change_ioctl\n", | |
402 | dev->instance)); | |
403 | return -EFAULT; | |
404 | } | |
405 | ||
406 | VFC_IOCTL_DEBUG_PRINTK(("vfc%d: IOCTL(VFCPORTCHG) arg=0x%x\n", | |
407 | dev->instance, cmd)); | |
408 | ||
409 | switch(cmd) { | |
410 | case 1: | |
411 | case 2: | |
412 | VFC_SAA9051_SA(dev,VFC_SAA9051_HSY_START) = 0x72; | |
413 | VFC_SAA9051_SA(dev,VFC_SAA9051_HSY_STOP) = 0x52; | |
414 | VFC_SAA9051_SA(dev,VFC_SAA9051_HC_START) = 0x36; | |
415 | VFC_SAA9051_SA(dev,VFC_SAA9051_HC_STOP) = 0x18; | |
416 | VFC_SAA9051_SA(dev,VFC_SAA9051_HORIZ_PEAK) = VFC_SAA9051_BP2; | |
417 | VFC_SAA9051_SA(dev,VFC_SAA9051_C3) = VFC_SAA9051_CT | VFC_SAA9051_SS3; | |
418 | VFC_SAA9051_SA(dev,VFC_SAA9051_SECAM_DELAY) = 0x3e; | |
419 | break; | |
420 | case 3: | |
421 | VFC_SAA9051_SA(dev,VFC_SAA9051_HSY_START) = 0x3a; | |
422 | VFC_SAA9051_SA(dev,VFC_SAA9051_HSY_STOP) = 0x17; | |
423 | VFC_SAA9051_SA(dev,VFC_SAA9051_HC_START) = 0xfa; | |
424 | VFC_SAA9051_SA(dev,VFC_SAA9051_HC_STOP) = 0xde; | |
425 | VFC_SAA9051_SA(dev,VFC_SAA9051_HORIZ_PEAK) = | |
426 | VFC_SAA9051_BY | VFC_SAA9051_PF | VFC_SAA9051_BP2; | |
427 | VFC_SAA9051_SA(dev,VFC_SAA9051_C3) = VFC_SAA9051_YC; | |
428 | VFC_SAA9051_SA(dev,VFC_SAA9051_SECAM_DELAY) = 0; | |
429 | VFC_SAA9051_SA(dev,VFC_SAA9051_C2) &= | |
430 | ~(VFC_SAA9051_SS0 | VFC_SAA9051_SS1); | |
431 | break; | |
432 | default: | |
433 | ret = -EINVAL; | |
434 | return ret; | |
435 | break; | |
436 | } | |
437 | ||
438 | switch(cmd) { | |
439 | case 1: | |
440 | VFC_SAA9051_SA(dev,VFC_SAA9051_C2) |= | |
441 | (VFC_SAA9051_SS0 | VFC_SAA9051_SS1); | |
442 | break; | |
443 | case 2: | |
444 | VFC_SAA9051_SA(dev,VFC_SAA9051_C2) &= | |
445 | ~(VFC_SAA9051_SS0 | VFC_SAA9051_SS1); | |
446 | VFC_SAA9051_SA(dev,VFC_SAA9051_C2) |= VFC_SAA9051_SS0; | |
447 | break; | |
448 | case 3: | |
449 | break; | |
450 | default: | |
451 | ret = -EINVAL; | |
452 | return ret; | |
453 | break; | |
454 | } | |
455 | VFC_SAA9051_SA(dev,VFC_SAA9051_C3) &= ~(VFC_SAA9051_SS2); | |
456 | ret=vfc_update_saa9051(dev); | |
457 | udelay(500); | |
458 | VFC_SAA9051_SA(dev,VFC_SAA9051_C3) |= (VFC_SAA9051_SS2); | |
459 | ret=vfc_update_saa9051(dev); | |
460 | return ret; | |
461 | } | |
462 | ||
463 | int vfc_set_video_ioctl(struct inode *inode, struct file *file, | |
464 | struct vfc_dev *dev, unsigned long arg) | |
465 | { | |
466 | int ret = 0; | |
467 | int cmd; | |
468 | ||
469 | if(copy_from_user(&cmd, (void __user *)arg, sizeof(unsigned int))) { | |
470 | VFC_IOCTL_DEBUG_PRINTK(("vfc%d: User passed bogus pointer to " | |
471 | "vfc_set_video_ioctl\n", | |
472 | dev->instance)); | |
473 | return ret; | |
474 | } | |
475 | ||
476 | VFC_IOCTL_DEBUG_PRINTK(("vfc%d: IOCTL(VFCSVID) arg=0x%x\n", | |
477 | dev->instance, cmd)); | |
478 | switch(cmd) { | |
479 | case STD_NTSC: | |
480 | VFC_SAA9051_SA(dev,VFC_SAA9051_C1) &= ~VFC_SAA9051_ALT; | |
481 | VFC_SAA9051_SA(dev,VFC_SAA9051_C1) |= VFC_SAA9051_YPN | | |
482 | VFC_SAA9051_CCFR0 | VFC_SAA9051_CCFR1 | VFC_SAA9051_FS; | |
483 | ret = vfc_update_saa9051(dev); | |
484 | break; | |
485 | case STD_PAL: | |
486 | VFC_SAA9051_SA(dev,VFC_SAA9051_C1) &= ~(VFC_SAA9051_YPN | | |
487 | VFC_SAA9051_CCFR1 | | |
488 | VFC_SAA9051_CCFR0 | | |
489 | VFC_SAA9051_FS); | |
490 | VFC_SAA9051_SA(dev,VFC_SAA9051_C1) |= VFC_SAA9051_ALT; | |
491 | ret = vfc_update_saa9051(dev); | |
492 | break; | |
493 | ||
494 | case COLOR_ON: | |
495 | VFC_SAA9051_SA(dev,VFC_SAA9051_C1) |= VFC_SAA9051_CO; | |
496 | VFC_SAA9051_SA(dev,VFC_SAA9051_HORIZ_PEAK) &= | |
497 | ~(VFC_SAA9051_BY | VFC_SAA9051_PF); | |
498 | ret = vfc_update_saa9051(dev); | |
499 | break; | |
500 | case MONO: | |
501 | VFC_SAA9051_SA(dev,VFC_SAA9051_C1) &= ~(VFC_SAA9051_CO); | |
502 | VFC_SAA9051_SA(dev,VFC_SAA9051_HORIZ_PEAK) |= | |
503 | (VFC_SAA9051_BY | VFC_SAA9051_PF); | |
504 | ret = vfc_update_saa9051(dev); | |
505 | break; | |
506 | default: | |
507 | ret = -EINVAL; | |
508 | break; | |
509 | }; | |
510 | ||
511 | return ret; | |
512 | } | |
513 | ||
514 | int vfc_get_video_ioctl(struct inode *inode, struct file *file, | |
515 | struct vfc_dev *dev, unsigned long arg) | |
516 | { | |
517 | int ret = 0; | |
518 | unsigned int status = NO_LOCK; | |
519 | unsigned char buf[1]; | |
520 | ||
521 | if(vfc_i2c_recvbuf(dev, VFC_SAA9051_ADDR, buf, 1)) { | |
522 | printk(KERN_ERR "vfc%d: Unable to get status\n", | |
523 | dev->instance); | |
524 | return -EIO; | |
525 | } | |
526 | ||
527 | if(buf[0] & VFC_SAA9051_HLOCK) { | |
528 | status = NO_LOCK; | |
529 | } else if(buf[0] & VFC_SAA9051_FD) { | |
530 | if(buf[0] & VFC_SAA9051_CD) | |
531 | status = NTSC_COLOR; | |
532 | else | |
533 | status = NTSC_NOCOLOR; | |
534 | } else { | |
535 | if(buf[0] & VFC_SAA9051_CD) | |
536 | status = PAL_COLOR; | |
537 | else | |
538 | status = PAL_NOCOLOR; | |
539 | } | |
540 | VFC_IOCTL_DEBUG_PRINTK(("vfc%d: IOCTL(VFCGVID) returning status 0x%x; " | |
541 | "buf[0]=%x\n", dev->instance, status, buf[0])); | |
542 | ||
543 | if (copy_to_user((void __user *)arg,&status,sizeof(unsigned int))) { | |
544 | VFC_IOCTL_DEBUG_PRINTK(("vfc%d: User passed bogus pointer to " | |
545 | "vfc_get_video_ioctl\n", | |
546 | dev->instance)); | |
547 | return ret; | |
548 | } | |
549 | return ret; | |
550 | } | |
551 | ||
552 | static int vfc_ioctl(struct inode *inode, struct file *file, unsigned int cmd, | |
553 | unsigned long arg) | |
554 | { | |
555 | int ret = 0; | |
556 | unsigned int tmp; | |
557 | struct vfc_dev *dev; | |
558 | void __user *argp = (void __user *)arg; | |
559 | ||
560 | dev = vfc_get_dev_ptr(iminor(inode)); | |
561 | if(dev == NULL) | |
562 | return -ENODEV; | |
563 | ||
564 | switch(cmd & 0x0000ffff) { | |
565 | case VFCGCTRL: | |
566 | #if 0 | |
567 | VFC_IOCTL_DEBUG_PRINTK(("vfc%d: IOCTL(VFCGCTRL)\n", dev->instance)); | |
568 | #endif | |
569 | tmp = sbus_readl(&dev->regs->control); | |
570 | if(copy_to_user(argp, &tmp, sizeof(unsigned int))) { | |
571 | ret = -EFAULT; | |
572 | break; | |
573 | } | |
574 | ret = 0; | |
575 | break; | |
576 | case VFCSCTRL: | |
577 | ret = vfc_set_control_ioctl(inode, file, dev, arg); | |
578 | break; | |
579 | case VFCGVID: | |
580 | ret = vfc_get_video_ioctl(inode, file, dev, arg); | |
581 | break; | |
582 | case VFCSVID: | |
583 | ret = vfc_set_video_ioctl(inode, file, dev, arg); | |
584 | break; | |
585 | case VFCHUE: | |
586 | VFC_IOCTL_DEBUG_PRINTK(("vfc%d: IOCTL(VFCHUE)\n", dev->instance)); | |
587 | if(copy_from_user(&tmp,argp,sizeof(unsigned int))) { | |
588 | VFC_IOCTL_DEBUG_PRINTK(("vfc%d: User passed bogus pointer " | |
589 | "to IOCTL(VFCHUE)", dev->instance)); | |
590 | ret = -EFAULT; | |
591 | } else { | |
592 | VFC_SAA9051_SA(dev,VFC_SAA9051_HUE) = tmp; | |
593 | vfc_update_saa9051(dev); | |
594 | ret = 0; | |
595 | } | |
596 | break; | |
597 | case VFCPORTCHG: | |
598 | ret = vfc_port_change_ioctl(inode, file, dev, arg); | |
599 | break; | |
600 | case VFCRDINFO: | |
601 | ret = -EINVAL; | |
602 | VFC_IOCTL_DEBUG_PRINTK(("vfc%d: IOCTL(VFCRDINFO)\n", dev->instance)); | |
603 | break; | |
604 | default: | |
605 | ret = vfc_debug(vfc_get_dev_ptr(iminor(inode)), cmd, argp); | |
606 | break; | |
607 | }; | |
608 | ||
609 | return ret; | |
610 | } | |
611 | ||
612 | static int vfc_mmap(struct file *file, struct vm_area_struct *vma) | |
613 | { | |
614 | unsigned int map_size, ret, map_offset; | |
615 | struct vfc_dev *dev; | |
616 | ||
7fa95f72 | 617 | dev = vfc_get_dev_ptr(iminor(file->f_path.dentry->d_inode)); |
1da177e4 LT |
618 | if(dev == NULL) |
619 | return -ENODEV; | |
620 | ||
621 | map_size = vma->vm_end - vma->vm_start; | |
622 | if(map_size > sizeof(struct vfc_regs)) | |
623 | map_size = sizeof(struct vfc_regs); | |
624 | ||
625 | vma->vm_flags |= | |
68402ddc | 626 | (VM_MAYREAD | VM_MAYWRITE | VM_MAYSHARE); |
1da177e4 LT |
627 | map_offset = (unsigned int) (long)dev->phys_regs; |
628 | ret = io_remap_pfn_range(vma, vma->vm_start, | |
629 | MK_IOSPACE_PFN(dev->which_io, | |
630 | map_offset >> PAGE_SHIFT), | |
631 | map_size, vma->vm_page_prot); | |
632 | ||
633 | if(ret) | |
634 | return -EAGAIN; | |
635 | ||
636 | return 0; | |
637 | } | |
638 | ||
639 | ||
00977a59 | 640 | static const struct file_operations vfc_fops = { |
1da177e4 LT |
641 | .owner = THIS_MODULE, |
642 | .llseek = no_llseek, | |
643 | .ioctl = vfc_ioctl, | |
644 | .mmap = vfc_mmap, | |
645 | .open = vfc_open, | |
646 | .release = vfc_release, | |
647 | }; | |
648 | ||
649 | static int vfc_probe(void) | |
650 | { | |
651 | struct sbus_bus *sbus; | |
652 | struct sbus_dev *sdev = NULL; | |
653 | int ret; | |
654 | int instance = 0, cards = 0; | |
655 | ||
656 | for_all_sbusdev(sdev, sbus) { | |
657 | if (strcmp(sdev->prom_name, "vfc") == 0) { | |
658 | cards++; | |
659 | continue; | |
660 | } | |
661 | } | |
662 | ||
663 | if (!cards) | |
664 | return -ENODEV; | |
665 | ||
dd00cc48 | 666 | vfc_dev_lst = kcalloc(cards + 1, sizeof(struct vfc_dev*), GFP_KERNEL); |
1da177e4 LT |
667 | if (vfc_dev_lst == NULL) |
668 | return -ENOMEM; | |
1da177e4 LT |
669 | vfc_dev_lst[cards] = NULL; |
670 | ||
671 | ret = register_chrdev(VFC_MAJOR, vfcstr, &vfc_fops); | |
672 | if(ret) { | |
673 | printk(KERN_ERR "Unable to get major number %d\n", VFC_MAJOR); | |
674 | kfree(vfc_dev_lst); | |
675 | return -EIO; | |
676 | } | |
1da177e4 LT |
677 | instance = 0; |
678 | for_all_sbusdev(sdev, sbus) { | |
679 | if (strcmp(sdev->prom_name, "vfc") == 0) { | |
680 | vfc_dev_lst[instance]=(struct vfc_dev *) | |
681 | kmalloc(sizeof(struct vfc_dev), GFP_KERNEL); | |
682 | if (vfc_dev_lst[instance] == NULL) | |
683 | return -ENOMEM; | |
684 | ret = init_vfc_device(sdev, | |
685 | vfc_dev_lst[instance], | |
686 | instance); | |
687 | if(ret) { | |
688 | printk(KERN_ERR "Unable to initialize" | |
689 | " vfc%d device\n", | |
690 | instance); | |
691 | } else { | |
692 | } | |
693 | ||
694 | instance++; | |
695 | continue; | |
696 | } | |
697 | } | |
698 | ||
699 | return 0; | |
700 | } | |
701 | ||
702 | #ifdef MODULE | |
703 | int init_module(void) | |
704 | #else | |
705 | int vfc_init(void) | |
706 | #endif | |
707 | { | |
708 | return vfc_probe(); | |
709 | } | |
710 | ||
711 | #ifdef MODULE | |
712 | static void deinit_vfc_device(struct vfc_dev *dev) | |
713 | { | |
714 | if(dev == NULL) | |
715 | return; | |
b7c690b5 | 716 | sbus_iounmap(dev->regs, sizeof(struct vfc_regs)); |
1da177e4 LT |
717 | kfree(dev); |
718 | } | |
719 | ||
720 | void cleanup_module(void) | |
721 | { | |
722 | struct vfc_dev **devp; | |
723 | ||
724 | unregister_chrdev(VFC_MAJOR,vfcstr); | |
725 | ||
726 | for (devp = vfc_dev_lst; *devp; devp++) | |
727 | deinit_vfc_device(*devp); | |
728 | ||
1da177e4 LT |
729 | kfree(vfc_dev_lst); |
730 | return; | |
731 | } | |
732 | #endif | |
733 | ||
734 | MODULE_LICENSE("GPL"); | |
735 |