Version:  2.0.40 2.2.26 2.4.37 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17

Linux/drivers/media/pci/meye/meye.c

  1 /*
  2  * Motion Eye video4linux driver for Sony Vaio PictureBook
  3  *
  4  * Copyright (C) 2001-2004 Stelian Pop <stelian@popies.net>
  5  *
  6  * Copyright (C) 2001-2002 AlcĂ´ve <www.alcove.com>
  7  *
  8  * Copyright (C) 2000 Andrew Tridgell <tridge@valinux.com>
  9  *
 10  * Earlier work by Werner Almesberger, Paul `Rusty' Russell and Paul Mackerras.
 11  *
 12  * Some parts borrowed from various video4linux drivers, especially
 13  * bttv-driver.c and zoran.c, see original files for credits.
 14  *
 15  * This program is free software; you can redistribute it and/or modify
 16  * it under the terms of the GNU General Public License as published by
 17  * the Free Software Foundation; either version 2 of the License, or
 18  * (at your option) any later version.
 19  *
 20  * This program is distributed in the hope that it will be useful,
 21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 23  * GNU General Public License for more details.
 24  *
 25  * You should have received a copy of the GNU General Public License
 26  * along with this program; if not, write to the Free Software
 27  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 28  */
 29 #include <linux/module.h>
 30 #include <linux/pci.h>
 31 #include <linux/sched.h>
 32 #include <linux/init.h>
 33 #include <linux/gfp.h>
 34 #include <linux/videodev2.h>
 35 #include <media/v4l2-common.h>
 36 #include <media/v4l2-device.h>
 37 #include <media/v4l2-ioctl.h>
 38 #include <media/v4l2-fh.h>
 39 #include <media/v4l2-event.h>
 40 #include <asm/uaccess.h>
 41 #include <asm/io.h>
 42 #include <linux/delay.h>
 43 #include <linux/interrupt.h>
 44 #include <linux/vmalloc.h>
 45 #include <linux/dma-mapping.h>
 46 
 47 #include "meye.h"
 48 #include <linux/meye.h>
 49 
 50 MODULE_AUTHOR("Stelian Pop <stelian@popies.net>");
 51 MODULE_DESCRIPTION("v4l2 driver for the MotionEye camera");
 52 MODULE_LICENSE("GPL");
 53 MODULE_VERSION(MEYE_DRIVER_VERSION);
 54 
 55 /* number of grab buffers */
 56 static unsigned int gbuffers = 2;
 57 module_param(gbuffers, int, 0444);
 58 MODULE_PARM_DESC(gbuffers, "number of capture buffers, default is 2 (32 max)");
 59 
 60 /* size of a grab buffer */
 61 static unsigned int gbufsize = MEYE_MAX_BUFSIZE;
 62 module_param(gbufsize, int, 0444);
 63 MODULE_PARM_DESC(gbufsize, "size of the capture buffers, default is 614400"
 64                  " (will be rounded up to a page multiple)");
 65 
 66 /* /dev/videoX registration number */
 67 static int video_nr = -1;
 68 module_param(video_nr, int, 0444);
 69 MODULE_PARM_DESC(video_nr, "video device to register (0=/dev/video0, etc)");
 70 
 71 /* driver structure - only one possible */
 72 static struct meye meye;
 73 
 74 /****************************************************************************/
 75 /* Memory allocation routines (stolen from bttv-driver.c)                   */
 76 /****************************************************************************/
 77 static void *rvmalloc(unsigned long size)
 78 {
 79         void *mem;
 80         unsigned long adr;
 81 
 82         size = PAGE_ALIGN(size);
 83         mem = vmalloc_32(size);
 84         if (mem) {
 85                 memset(mem, 0, size);
 86                 adr = (unsigned long) mem;
 87                 while (size > 0) {
 88                         SetPageReserved(vmalloc_to_page((void *)adr));
 89                         adr += PAGE_SIZE;
 90                         size -= PAGE_SIZE;
 91                 }
 92         }
 93         return mem;
 94 }
 95 
 96 static void rvfree(void * mem, unsigned long size)
 97 {
 98         unsigned long adr;
 99 
100         if (mem) {
101                 adr = (unsigned long) mem;
102                 while ((long) size > 0) {
103                         ClearPageReserved(vmalloc_to_page((void *)adr));
104                         adr += PAGE_SIZE;
105                         size -= PAGE_SIZE;
106                 }
107                 vfree(mem);
108         }
109 }
110 
111 /*
112  * return a page table pointing to N pages of locked memory
113  *
114  * NOTE: The meye device expects DMA addresses on 32 bits, we build
115  * a table of 1024 entries = 4 bytes * 1024 = 4096 bytes.
116  */
117 static int ptable_alloc(void)
118 {
119         u32 *pt;
120         int i;
121 
122         memset(meye.mchip_ptable, 0, sizeof(meye.mchip_ptable));
123 
124         /* give only 32 bit DMA addresses */
125         if (dma_set_mask(&meye.mchip_dev->dev, DMA_BIT_MASK(32)))
126                 return -1;
127 
128         meye.mchip_ptable_toc = dma_alloc_coherent(&meye.mchip_dev->dev,
129                                                    PAGE_SIZE,
130                                                    &meye.mchip_dmahandle,
131                                                    GFP_KERNEL);
132         if (!meye.mchip_ptable_toc) {
133                 meye.mchip_dmahandle = 0;
134                 return -1;
135         }
136 
137         pt = meye.mchip_ptable_toc;
138         for (i = 0; i < MCHIP_NB_PAGES; i++) {
139                 dma_addr_t dma;
140                 meye.mchip_ptable[i] = dma_alloc_coherent(&meye.mchip_dev->dev,
141                                                           PAGE_SIZE,
142                                                           &dma,
143                                                           GFP_KERNEL);
144                 if (!meye.mchip_ptable[i]) {
145                         int j;
146                         pt = meye.mchip_ptable_toc;
147                         for (j = 0; j < i; ++j) {
148                                 dma = (dma_addr_t) *pt;
149                                 dma_free_coherent(&meye.mchip_dev->dev,
150                                                   PAGE_SIZE,
151                                                   meye.mchip_ptable[j], dma);
152                                 pt++;
153                         }
154                         dma_free_coherent(&meye.mchip_dev->dev,
155                                           PAGE_SIZE,
156                                           meye.mchip_ptable_toc,
157                                           meye.mchip_dmahandle);
158                         meye.mchip_ptable_toc = NULL;
159                         meye.mchip_dmahandle = 0;
160                         return -1;
161                 }
162                 *pt = (u32) dma;
163                 pt++;
164         }
165         return 0;
166 }
167 
168 static void ptable_free(void)
169 {
170         u32 *pt;
171         int i;
172 
173         pt = meye.mchip_ptable_toc;
174         for (i = 0; i < MCHIP_NB_PAGES; i++) {
175                 dma_addr_t dma = (dma_addr_t) *pt;
176                 if (meye.mchip_ptable[i])
177                         dma_free_coherent(&meye.mchip_dev->dev,
178                                           PAGE_SIZE,
179                                           meye.mchip_ptable[i], dma);
180                 pt++;
181         }
182 
183         if (meye.mchip_ptable_toc)
184                 dma_free_coherent(&meye.mchip_dev->dev,
185                                   PAGE_SIZE,
186                                   meye.mchip_ptable_toc,
187                                   meye.mchip_dmahandle);
188 
189         memset(meye.mchip_ptable, 0, sizeof(meye.mchip_ptable));
190         meye.mchip_ptable_toc = NULL;
191         meye.mchip_dmahandle = 0;
192 }
193 
194 /* copy data from ptable into buf */
195 static void ptable_copy(u8 *buf, int start, int size, int pt_pages)
196 {
197         int i;
198 
199         for (i = 0; i < (size / PAGE_SIZE) * PAGE_SIZE; i += PAGE_SIZE) {
200                 memcpy(buf + i, meye.mchip_ptable[start++], PAGE_SIZE);
201                 if (start >= pt_pages)
202                         start = 0;
203         }
204         memcpy(buf + i, meye.mchip_ptable[start], size % PAGE_SIZE);
205 }
206 
207 /****************************************************************************/
208 /* JPEG tables at different qualities to load into the VRJ chip             */
209 /****************************************************************************/
210 
211 /* return a set of quantisation tables based on a quality from 1 to 10 */
212 static u16 *jpeg_quantisation_tables(int *length, int quality)
213 {
214         static u16 jpeg_tables[][70] = { {
215                 0xdbff, 0x4300, 0xff00, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
216                 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
217                 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
218                 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
219                 0xffff, 0xffff, 0xffff,
220                 0xdbff, 0x4300, 0xff01, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
221                 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
222                 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
223                 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
224                 0xffff, 0xffff, 0xffff,
225         },
226         {
227                 0xdbff, 0x4300, 0x5000, 0x3c37, 0x3c46, 0x5032, 0x4146, 0x5a46,
228                 0x5055, 0x785f, 0x82c8, 0x6e78, 0x786e, 0xaff5, 0x91b9, 0xffc8,
229                 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
230                 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
231                 0xffff, 0xffff, 0xffff,
232                 0xdbff, 0x4300, 0x5501, 0x5a5a, 0x6978, 0xeb78, 0x8282, 0xffeb,
233                 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
234                 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
235                 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
236                 0xffff, 0xffff, 0xffff,
237         },
238         {
239                 0xdbff, 0x4300, 0x2800, 0x1e1c, 0x1e23, 0x2819, 0x2123, 0x2d23,
240                 0x282b, 0x3c30, 0x4164, 0x373c, 0x3c37, 0x587b, 0x495d, 0x9164,
241                 0x9980, 0x8f96, 0x8c80, 0xa08a, 0xe6b4, 0xa0c3, 0xdaaa, 0x8aad,
242                 0xc88c, 0xcbff, 0xeeda, 0xfff5, 0xffff, 0xc19b, 0xffff, 0xfaff,
243                 0xe6ff, 0xfffd, 0xfff8,
244                 0xdbff, 0x4300, 0x2b01, 0x2d2d, 0x353c, 0x763c, 0x4141, 0xf876,
245                 0x8ca5, 0xf8a5, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8,
246                 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8,
247                 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8,
248                 0xf8f8, 0xf8f8, 0xfff8,
249         },
250         {
251                 0xdbff, 0x4300, 0x1b00, 0x1412, 0x1417, 0x1b11, 0x1617, 0x1e17,
252                 0x1b1c, 0x2820, 0x2b42, 0x2528, 0x2825, 0x3a51, 0x303d, 0x6042,
253                 0x6555, 0x5f64, 0x5d55, 0x6a5b, 0x9978, 0x6a81, 0x9071, 0x5b73,
254                 0x855d, 0x86b5, 0x9e90, 0xaba3, 0xabad, 0x8067, 0xc9bc, 0xa6ba,
255                 0x99c7, 0xaba8, 0xffa4,
256                 0xdbff, 0x4300, 0x1c01, 0x1e1e, 0x2328, 0x4e28, 0x2b2b, 0xa44e,
257                 0x5d6e, 0xa46e, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4,
258                 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4,
259                 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4,
260                 0xa4a4, 0xa4a4, 0xffa4,
261         },
262         {
263                 0xdbff, 0x4300, 0x1400, 0x0f0e, 0x0f12, 0x140d, 0x1012, 0x1712,
264                 0x1415, 0x1e18, 0x2132, 0x1c1e, 0x1e1c, 0x2c3d, 0x242e, 0x4932,
265                 0x4c40, 0x474b, 0x4640, 0x5045, 0x735a, 0x5062, 0x6d55, 0x4556,
266                 0x6446, 0x6588, 0x776d, 0x817b, 0x8182, 0x604e, 0x978d, 0x7d8c,
267                 0x7396, 0x817e, 0xff7c,
268                 0xdbff, 0x4300, 0x1501, 0x1717, 0x1a1e, 0x3b1e, 0x2121, 0x7c3b,
269                 0x4653, 0x7c53, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c,
270                 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c,
271                 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c,
272                 0x7c7c, 0x7c7c, 0xff7c,
273         },
274         {
275                 0xdbff, 0x4300, 0x1000, 0x0c0b, 0x0c0e, 0x100a, 0x0d0e, 0x120e,
276                 0x1011, 0x1813, 0x1a28, 0x1618, 0x1816, 0x2331, 0x1d25, 0x3a28,
277                 0x3d33, 0x393c, 0x3833, 0x4037, 0x5c48, 0x404e, 0x5744, 0x3745,
278                 0x5038, 0x516d, 0x5f57, 0x6762, 0x6768, 0x4d3e, 0x7971, 0x6470,
279                 0x5c78, 0x6765, 0xff63,
280                 0xdbff, 0x4300, 0x1101, 0x1212, 0x1518, 0x2f18, 0x1a1a, 0x632f,
281                 0x3842, 0x6342, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363,
282                 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363,
283                 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363,
284                 0x6363, 0x6363, 0xff63,
285         },
286         {
287                 0xdbff, 0x4300, 0x0d00, 0x0a09, 0x0a0b, 0x0d08, 0x0a0b, 0x0e0b,
288                 0x0d0e, 0x130f, 0x1520, 0x1213, 0x1312, 0x1c27, 0x171e, 0x2e20,
289                 0x3129, 0x2e30, 0x2d29, 0x332c, 0x4a3a, 0x333e, 0x4636, 0x2c37,
290                 0x402d, 0x4157, 0x4c46, 0x524e, 0x5253, 0x3e32, 0x615a, 0x505a,
291                 0x4a60, 0x5251, 0xff4f,
292                 0xdbff, 0x4300, 0x0e01, 0x0e0e, 0x1113, 0x2613, 0x1515, 0x4f26,
293                 0x2d35, 0x4f35, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f,
294                 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f,
295                 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f,
296                 0x4f4f, 0x4f4f, 0xff4f,
297         },
298         {
299                 0xdbff, 0x4300, 0x0a00, 0x0707, 0x0708, 0x0a06, 0x0808, 0x0b08,
300                 0x0a0a, 0x0e0b, 0x1018, 0x0d0e, 0x0e0d, 0x151d, 0x1116, 0x2318,
301                 0x251f, 0x2224, 0x221f, 0x2621, 0x372b, 0x262f, 0x3429, 0x2129,
302                 0x3022, 0x3141, 0x3934, 0x3e3b, 0x3e3e, 0x2e25, 0x4944, 0x3c43,
303                 0x3748, 0x3e3d, 0xff3b,
304                 0xdbff, 0x4300, 0x0a01, 0x0b0b, 0x0d0e, 0x1c0e, 0x1010, 0x3b1c,
305                 0x2228, 0x3b28, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b,
306                 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b,
307                 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b,
308                 0x3b3b, 0x3b3b, 0xff3b,
309         },
310         {
311                 0xdbff, 0x4300, 0x0600, 0x0504, 0x0506, 0x0604, 0x0506, 0x0706,
312                 0x0607, 0x0a08, 0x0a10, 0x090a, 0x0a09, 0x0e14, 0x0c0f, 0x1710,
313                 0x1814, 0x1718, 0x1614, 0x1a16, 0x251d, 0x1a1f, 0x231b, 0x161c,
314                 0x2016, 0x202c, 0x2623, 0x2927, 0x292a, 0x1f19, 0x302d, 0x282d,
315                 0x2530, 0x2928, 0xff28,
316                 0xdbff, 0x4300, 0x0701, 0x0707, 0x080a, 0x130a, 0x0a0a, 0x2813,
317                 0x161a, 0x281a, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828,
318                 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828,
319                 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828,
320                 0x2828, 0x2828, 0xff28,
321         },
322         {
323                 0xdbff, 0x4300, 0x0300, 0x0202, 0x0203, 0x0302, 0x0303, 0x0403,
324                 0x0303, 0x0504, 0x0508, 0x0405, 0x0504, 0x070a, 0x0607, 0x0c08,
325                 0x0c0a, 0x0b0c, 0x0b0a, 0x0d0b, 0x120e, 0x0d10, 0x110e, 0x0b0e,
326                 0x100b, 0x1016, 0x1311, 0x1514, 0x1515, 0x0f0c, 0x1817, 0x1416,
327                 0x1218, 0x1514, 0xff14,
328                 0xdbff, 0x4300, 0x0301, 0x0404, 0x0405, 0x0905, 0x0505, 0x1409,
329                 0x0b0d, 0x140d, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414,
330                 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414,
331                 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414,
332                 0x1414, 0x1414, 0xff14,
333         },
334         {
335                 0xdbff, 0x4300, 0x0100, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
336                 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
337                 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
338                 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
339                 0x0101, 0x0101, 0xff01,
340                 0xdbff, 0x4300, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
341                 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
342                 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
343                 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
344                 0x0101, 0x0101, 0xff01,
345         } };
346 
347         if (quality < 0 || quality > 10) {
348                 printk(KERN_WARNING
349                        "meye: invalid quality level %d - using 8\n", quality);
350                 quality = 8;
351         }
352 
353         *length = ARRAY_SIZE(jpeg_tables[quality]);
354         return jpeg_tables[quality];
355 }
356 
357 /* return a generic set of huffman tables */
358 static u16 *jpeg_huffman_tables(int *length)
359 {
360         static u16 tables[] = {
361                 0xC4FF, 0xB500, 0x0010, 0x0102, 0x0303, 0x0402, 0x0503, 0x0405,
362                 0x0004, 0x0100, 0x017D, 0x0302, 0x0400, 0x0511, 0x2112, 0x4131,
363                 0x1306, 0x6151, 0x2207, 0x1471, 0x8132, 0xA191, 0x2308, 0xB142,
364                 0x15C1, 0xD152, 0x24F0, 0x6233, 0x8272, 0x0A09, 0x1716, 0x1918,
365                 0x251A, 0x2726, 0x2928, 0x342A, 0x3635, 0x3837, 0x3A39, 0x4443,
366                 0x4645, 0x4847, 0x4A49, 0x5453, 0x5655, 0x5857, 0x5A59, 0x6463,
367                 0x6665, 0x6867, 0x6A69, 0x7473, 0x7675, 0x7877, 0x7A79, 0x8483,
368                 0x8685, 0x8887, 0x8A89, 0x9392, 0x9594, 0x9796, 0x9998, 0xA29A,
369                 0xA4A3, 0xA6A5, 0xA8A7, 0xAAA9, 0xB3B2, 0xB5B4, 0xB7B6, 0xB9B8,
370                 0xC2BA, 0xC4C3, 0xC6C5, 0xC8C7, 0xCAC9, 0xD3D2, 0xD5D4, 0xD7D6,
371                 0xD9D8, 0xE1DA, 0xE3E2, 0xE5E4, 0xE7E6, 0xE9E8, 0xF1EA, 0xF3F2,
372                 0xF5F4, 0xF7F6, 0xF9F8, 0xFFFA,
373                 0xC4FF, 0xB500, 0x0011, 0x0102, 0x0402, 0x0304, 0x0704, 0x0405,
374                 0x0004, 0x0201, 0x0077, 0x0201, 0x1103, 0x0504, 0x3121, 0x1206,
375                 0x5141, 0x6107, 0x1371, 0x3222, 0x0881, 0x4214, 0xA191, 0xC1B1,
376                 0x2309, 0x5233, 0x15F0, 0x7262, 0x0AD1, 0x2416, 0xE134, 0xF125,
377                 0x1817, 0x1A19, 0x2726, 0x2928, 0x352A, 0x3736, 0x3938, 0x433A,
378                 0x4544, 0x4746, 0x4948, 0x534A, 0x5554, 0x5756, 0x5958, 0x635A,
379                 0x6564, 0x6766, 0x6968, 0x736A, 0x7574, 0x7776, 0x7978, 0x827A,
380                 0x8483, 0x8685, 0x8887, 0x8A89, 0x9392, 0x9594, 0x9796, 0x9998,
381                 0xA29A, 0xA4A3, 0xA6A5, 0xA8A7, 0xAAA9, 0xB3B2, 0xB5B4, 0xB7B6,
382                 0xB9B8, 0xC2BA, 0xC4C3, 0xC6C5, 0xC8C7, 0xCAC9, 0xD3D2, 0xD5D4,
383                 0xD7D6, 0xD9D8, 0xE2DA, 0xE4E3, 0xE6E5, 0xE8E7, 0xEAE9, 0xF3F2,
384                 0xF5F4, 0xF7F6, 0xF9F8, 0xFFFA,
385                 0xC4FF, 0x1F00, 0x0000, 0x0501, 0x0101, 0x0101, 0x0101, 0x0000,
386                 0x0000, 0x0000, 0x0000, 0x0201, 0x0403, 0x0605, 0x0807, 0x0A09,
387                 0xFF0B,
388                 0xC4FF, 0x1F00, 0x0001, 0x0103, 0x0101, 0x0101, 0x0101, 0x0101,
389                 0x0000, 0x0000, 0x0000, 0x0201, 0x0403, 0x0605, 0x0807, 0x0A09,
390                 0xFF0B
391         };
392 
393         *length = ARRAY_SIZE(tables);
394         return tables;
395 }
396 
397 /****************************************************************************/
398 /* MCHIP low-level functions                                                */
399 /****************************************************************************/
400 
401 /* returns the horizontal capture size */
402 static inline int mchip_hsize(void)
403 {
404         return meye.params.subsample ? 320 : 640;
405 }
406 
407 /* returns the vertical capture size */
408 static inline int mchip_vsize(void)
409 {
410         return meye.params.subsample ? 240 : 480;
411 }
412 
413 /* waits for a register to be available */
414 static void mchip_sync(int reg)
415 {
416         u32 status;
417         int i;
418 
419         if (reg == MCHIP_MM_FIFO_DATA) {
420                 for (i = 0; i < MCHIP_REG_TIMEOUT; i++) {
421                         status = readl(meye.mchip_mmregs +
422                                        MCHIP_MM_FIFO_STATUS);
423                         if (!(status & MCHIP_MM_FIFO_WAIT)) {
424                                 printk(KERN_WARNING "meye: fifo not ready\n");
425                                 return;
426                         }
427                         if (status & MCHIP_MM_FIFO_READY)
428                                 return;
429                         udelay(1);
430                 }
431         } else if (reg > 0x80) {
432                 u32 mask = (reg < 0x100) ? MCHIP_HIC_STATUS_MCC_RDY
433                                          : MCHIP_HIC_STATUS_VRJ_RDY;
434                 for (i = 0; i < MCHIP_REG_TIMEOUT; i++) {
435                         status = readl(meye.mchip_mmregs + MCHIP_HIC_STATUS);
436                         if (status & mask)
437                                 return;
438                         udelay(1);
439                 }
440         } else
441                 return;
442         printk(KERN_WARNING
443                "meye: mchip_sync() timeout on reg 0x%x status=0x%x\n",
444                reg, status);
445 }
446 
447 /* sets a value into the register */
448 static inline void mchip_set(int reg, u32 v)
449 {
450         mchip_sync(reg);
451         writel(v, meye.mchip_mmregs + reg);
452 }
453 
454 /* get the register value */
455 static inline u32 mchip_read(int reg)
456 {
457         mchip_sync(reg);
458         return readl(meye.mchip_mmregs + reg);
459 }
460 
461 /* wait for a register to become a particular value */
462 static inline int mchip_delay(u32 reg, u32 v)
463 {
464         int n = 10;
465         while (--n && mchip_read(reg) != v)
466                 udelay(1);
467         return n;
468 }
469 
470 /* setup subsampling */
471 static void mchip_subsample(void)
472 {
473         mchip_set(MCHIP_MCC_R_SAMPLING, meye.params.subsample);
474         mchip_set(MCHIP_MCC_R_XRANGE, mchip_hsize());
475         mchip_set(MCHIP_MCC_R_YRANGE, mchip_vsize());
476         mchip_set(MCHIP_MCC_B_XRANGE, mchip_hsize());
477         mchip_set(MCHIP_MCC_B_YRANGE, mchip_vsize());
478         mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE);
479 }
480 
481 /* set the framerate into the mchip */
482 static void mchip_set_framerate(void)
483 {
484         mchip_set(MCHIP_HIC_S_RATE, meye.params.framerate);
485 }
486 
487 /* load some huffman and quantisation tables into the VRJ chip ready
488    for JPEG compression */
489 static void mchip_load_tables(void)
490 {
491         int i;
492         int length;
493         u16 *tables;
494 
495         tables = jpeg_huffman_tables(&length);
496         for (i = 0; i < length; i++)
497                 writel(tables[i], meye.mchip_mmregs + MCHIP_VRJ_TABLE_DATA);
498 
499         tables = jpeg_quantisation_tables(&length, meye.params.quality);
500         for (i = 0; i < length; i++)
501                 writel(tables[i], meye.mchip_mmregs + MCHIP_VRJ_TABLE_DATA);
502 }
503 
504 /* setup the VRJ parameters in the chip */
505 static void mchip_vrj_setup(u8 mode)
506 {
507         mchip_set(MCHIP_VRJ_BUS_MODE, 5);
508         mchip_set(MCHIP_VRJ_SIGNAL_ACTIVE_LEVEL, 0x1f);
509         mchip_set(MCHIP_VRJ_PDAT_USE, 1);
510         mchip_set(MCHIP_VRJ_IRQ_FLAG, 0xa0);
511         mchip_set(MCHIP_VRJ_MODE_SPECIFY, mode);
512         mchip_set(MCHIP_VRJ_NUM_LINES, mchip_vsize());
513         mchip_set(MCHIP_VRJ_NUM_PIXELS, mchip_hsize());
514         mchip_set(MCHIP_VRJ_NUM_COMPONENTS, 0x1b);
515         mchip_set(MCHIP_VRJ_LIMIT_COMPRESSED_LO, 0xFFFF);
516         mchip_set(MCHIP_VRJ_LIMIT_COMPRESSED_HI, 0xFFFF);
517         mchip_set(MCHIP_VRJ_COMP_DATA_FORMAT, 0xC);
518         mchip_set(MCHIP_VRJ_RESTART_INTERVAL, 0);
519         mchip_set(MCHIP_VRJ_SOF1, 0x601);
520         mchip_set(MCHIP_VRJ_SOF2, 0x1502);
521         mchip_set(MCHIP_VRJ_SOF3, 0x1503);
522         mchip_set(MCHIP_VRJ_SOF4, 0x1596);
523         mchip_set(MCHIP_VRJ_SOS, 0x0ed0);
524 
525         mchip_load_tables();
526 }
527 
528 /* sets the DMA parameters into the chip */
529 static void mchip_dma_setup(dma_addr_t dma_addr)
530 {
531         int i;
532 
533         mchip_set(MCHIP_MM_PT_ADDR, (u32)dma_addr);
534         for (i = 0; i < 4; i++)
535                 mchip_set(MCHIP_MM_FIR(i), 0);
536         meye.mchip_fnum = 0;
537 }
538 
539 /* setup for DMA transfers - also zeros the framebuffer */
540 static int mchip_dma_alloc(void)
541 {
542         if (!meye.mchip_dmahandle)
543                 if (ptable_alloc())
544                         return -1;
545         return 0;
546 }
547 
548 /* frees the DMA buffer */
549 static void mchip_dma_free(void)
550 {
551         if (meye.mchip_dmahandle) {
552                 mchip_dma_setup(0);
553                 ptable_free();
554         }
555 }
556 
557 /* stop any existing HIC action and wait for any dma to complete then
558    reset the dma engine */
559 static void mchip_hic_stop(void)
560 {
561         int i, j;
562 
563         meye.mchip_mode = MCHIP_HIC_MODE_NOOP;
564         if (!(mchip_read(MCHIP_HIC_STATUS) & MCHIP_HIC_STATUS_BUSY))
565                 return;
566         for (i = 0; i < 20; ++i) {
567                 mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_STOP);
568                 mchip_delay(MCHIP_HIC_CMD, 0);
569                 for (j = 0; j < 100; ++j) {
570                         if (mchip_delay(MCHIP_HIC_STATUS,
571                                         MCHIP_HIC_STATUS_IDLE))
572                                 return;
573                         msleep(1);
574                 }
575                 printk(KERN_ERR "meye: need to reset HIC!\n");
576 
577                 mchip_set(MCHIP_HIC_CTL, MCHIP_HIC_CTL_SOFT_RESET);
578                 msleep(250);
579         }
580         printk(KERN_ERR "meye: resetting HIC hanged!\n");
581 }
582 
583 /****************************************************************************/
584 /* MCHIP frame processing functions                                         */
585 /****************************************************************************/
586 
587 /* get the next ready frame from the dma engine */
588 static u32 mchip_get_frame(void)
589 {
590         u32 v;
591 
592         v = mchip_read(MCHIP_MM_FIR(meye.mchip_fnum));
593         return v;
594 }
595 
596 /* frees the current frame from the dma engine */
597 static void mchip_free_frame(void)
598 {
599         mchip_set(MCHIP_MM_FIR(meye.mchip_fnum), 0);
600         meye.mchip_fnum++;
601         meye.mchip_fnum %= 4;
602 }
603 
604 /* read one frame from the framebuffer assuming it was captured using
605    a uncompressed transfer */
606 static void mchip_cont_read_frame(u32 v, u8 *buf, int size)
607 {
608         int pt_id;
609 
610         pt_id = (v >> 17) & 0x3FF;
611 
612         ptable_copy(buf, pt_id, size, MCHIP_NB_PAGES);
613 }
614 
615 /* read a compressed frame from the framebuffer */
616 static int mchip_comp_read_frame(u32 v, u8 *buf, int size)
617 {
618         int pt_start, pt_end, trailer;
619         int fsize;
620         int i;
621 
622         pt_start = (v >> 19) & 0xFF;
623         pt_end = (v >> 11) & 0xFF;
624         trailer = (v >> 1) & 0x3FF;
625 
626         if (pt_end < pt_start)
627                 fsize = (MCHIP_NB_PAGES_MJPEG - pt_start) * PAGE_SIZE +
628                         pt_end * PAGE_SIZE + trailer * 4;
629         else
630                 fsize = (pt_end - pt_start) * PAGE_SIZE + trailer * 4;
631 
632         if (fsize > size) {
633                 printk(KERN_WARNING "meye: oversized compressed frame %d\n",
634                        fsize);
635                 return -1;
636         }
637 
638         ptable_copy(buf, pt_start, fsize, MCHIP_NB_PAGES_MJPEG);
639 
640 #ifdef MEYE_JPEG_CORRECTION
641 
642         /* Some mchip generated jpeg frames are incorrect. In most
643          * (all ?) of those cases, the final EOI (0xff 0xd9) marker
644          * is not present at the end of the frame.
645          *
646          * Since adding the final marker is not enough to restore
647          * the jpeg integrity, we drop the frame.
648          */
649 
650         for (i = fsize - 1; i > 0 && buf[i] == 0xff; i--) ;
651 
652         if (i < 2 || buf[i - 1] != 0xff || buf[i] != 0xd9)
653                 return -1;
654 
655 #endif
656 
657         return fsize;
658 }
659 
660 /* take a picture into SDRAM */
661 static void mchip_take_picture(void)
662 {
663         int i;
664 
665         mchip_hic_stop();
666         mchip_subsample();
667         mchip_dma_setup(meye.mchip_dmahandle);
668 
669         mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_CAP);
670         mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
671 
672         mchip_delay(MCHIP_HIC_CMD, 0);
673 
674         for (i = 0; i < 100; ++i) {
675                 if (mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE))
676                         break;
677                 msleep(1);
678         }
679 }
680 
681 /* dma a previously taken picture into a buffer */
682 static void mchip_get_picture(u8 *buf, int bufsize)
683 {
684         u32 v;
685         int i;
686 
687         mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_OUT);
688         mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
689 
690         mchip_delay(MCHIP_HIC_CMD, 0);
691         for (i = 0; i < 100; ++i) {
692                 if (mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE))
693                         break;
694                 msleep(1);
695         }
696         for (i = 0; i < 4; ++i) {
697                 v = mchip_get_frame();
698                 if (v & MCHIP_MM_FIR_RDY) {
699                         mchip_cont_read_frame(v, buf, bufsize);
700                         break;
701                 }
702                 mchip_free_frame();
703         }
704 }
705 
706 /* start continuous dma capture */
707 static void mchip_continuous_start(void)
708 {
709         mchip_hic_stop();
710         mchip_subsample();
711         mchip_set_framerate();
712         mchip_dma_setup(meye.mchip_dmahandle);
713 
714         meye.mchip_mode = MCHIP_HIC_MODE_CONT_OUT;
715 
716         mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_CONT_OUT);
717         mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
718 
719         mchip_delay(MCHIP_HIC_CMD, 0);
720 }
721 
722 /* compress one frame into a buffer */
723 static int mchip_compress_frame(u8 *buf, int bufsize)
724 {
725         u32 v;
726         int len = -1, i;
727 
728         mchip_vrj_setup(0x3f);
729         udelay(50);
730 
731         mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_COMP);
732         mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
733 
734         mchip_delay(MCHIP_HIC_CMD, 0);
735         for (i = 0; i < 100; ++i) {
736                 if (mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE))
737                         break;
738                 msleep(1);
739         }
740 
741         for (i = 0; i < 4; ++i) {
742                 v = mchip_get_frame();
743                 if (v & MCHIP_MM_FIR_RDY) {
744                         len = mchip_comp_read_frame(v, buf, bufsize);
745                         break;
746                 }
747                 mchip_free_frame();
748         }
749         return len;
750 }
751 
752 #if 0
753 /* uncompress one image into a buffer */
754 static int mchip_uncompress_frame(u8 *img, int imgsize, u8 *buf, int bufsize)
755 {
756         mchip_vrj_setup(0x3f);
757         udelay(50);
758 
759         mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_DECOMP);
760         mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
761 
762         mchip_delay(MCHIP_HIC_CMD, 0);
763 
764         return mchip_comp_read_frame(buf, bufsize);
765 }
766 #endif
767 
768 /* start continuous compressed capture */
769 static void mchip_cont_compression_start(void)
770 {
771         mchip_hic_stop();
772         mchip_vrj_setup(0x3f);
773         mchip_subsample();
774         mchip_set_framerate();
775         mchip_dma_setup(meye.mchip_dmahandle);
776 
777         meye.mchip_mode = MCHIP_HIC_MODE_CONT_COMP;
778 
779         mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_CONT_COMP);
780         mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
781 
782         mchip_delay(MCHIP_HIC_CMD, 0);
783 }
784 
785 /****************************************************************************/
786 /* Interrupt handling                                                       */
787 /****************************************************************************/
788 
789 static irqreturn_t meye_irq(int irq, void *dev_id)
790 {
791         u32 v;
792         int reqnr;
793         static int sequence;
794 
795         v = mchip_read(MCHIP_MM_INTA);
796 
797         if (meye.mchip_mode != MCHIP_HIC_MODE_CONT_OUT &&
798             meye.mchip_mode != MCHIP_HIC_MODE_CONT_COMP)
799                 return IRQ_NONE;
800 
801 again:
802         v = mchip_get_frame();
803         if (!(v & MCHIP_MM_FIR_RDY))
804                 return IRQ_HANDLED;
805 
806         if (meye.mchip_mode == MCHIP_HIC_MODE_CONT_OUT) {
807                 if (kfifo_out_locked(&meye.grabq, (unsigned char *)&reqnr,
808                               sizeof(int), &meye.grabq_lock) != sizeof(int)) {
809                         mchip_free_frame();
810                         return IRQ_HANDLED;
811                 }
812                 mchip_cont_read_frame(v, meye.grab_fbuffer + gbufsize * reqnr,
813                                       mchip_hsize() * mchip_vsize() * 2);
814                 meye.grab_buffer[reqnr].size = mchip_hsize() * mchip_vsize() * 2;
815                 meye.grab_buffer[reqnr].state = MEYE_BUF_DONE;
816                 v4l2_get_timestamp(&meye.grab_buffer[reqnr].timestamp);
817                 meye.grab_buffer[reqnr].sequence = sequence++;
818                 kfifo_in_locked(&meye.doneq, (unsigned char *)&reqnr,
819                                 sizeof(int), &meye.doneq_lock);
820                 wake_up_interruptible(&meye.proc_list);
821         } else {
822                 int size;
823                 size = mchip_comp_read_frame(v, meye.grab_temp, gbufsize);
824                 if (size == -1) {
825                         mchip_free_frame();
826                         goto again;
827                 }
828                 if (kfifo_out_locked(&meye.grabq, (unsigned char *)&reqnr,
829                               sizeof(int), &meye.grabq_lock) != sizeof(int)) {
830                         mchip_free_frame();
831                         goto again;
832                 }
833                 memcpy(meye.grab_fbuffer + gbufsize * reqnr, meye.grab_temp,
834                        size);
835                 meye.grab_buffer[reqnr].size = size;
836                 meye.grab_buffer[reqnr].state = MEYE_BUF_DONE;
837                 v4l2_get_timestamp(&meye.grab_buffer[reqnr].timestamp);
838                 meye.grab_buffer[reqnr].sequence = sequence++;
839                 kfifo_in_locked(&meye.doneq, (unsigned char *)&reqnr,
840                                 sizeof(int), &meye.doneq_lock);
841                 wake_up_interruptible(&meye.proc_list);
842         }
843         mchip_free_frame();
844         goto again;
845 }
846 
847 /****************************************************************************/
848 /* video4linux integration                                                  */
849 /****************************************************************************/
850 
851 static int meye_open(struct file *file)
852 {
853         int i;
854 
855         if (test_and_set_bit(0, &meye.in_use))
856                 return -EBUSY;
857 
858         mchip_hic_stop();
859 
860         if (mchip_dma_alloc()) {
861                 printk(KERN_ERR "meye: mchip framebuffer allocation failed\n");
862                 clear_bit(0, &meye.in_use);
863                 return -ENOBUFS;
864         }
865 
866         for (i = 0; i < MEYE_MAX_BUFNBRS; i++)
867                 meye.grab_buffer[i].state = MEYE_BUF_UNUSED;
868         kfifo_reset(&meye.grabq);
869         kfifo_reset(&meye.doneq);
870         return v4l2_fh_open(file);
871 }
872 
873 static int meye_release(struct file *file)
874 {
875         mchip_hic_stop();
876         mchip_dma_free();
877         clear_bit(0, &meye.in_use);
878         return v4l2_fh_release(file);
879 }
880 
881 static int meyeioc_g_params(struct meye_params *p)
882 {
883         *p = meye.params;
884         return 0;
885 }
886 
887 static int meyeioc_s_params(struct meye_params *jp)
888 {
889         if (jp->subsample > 1)
890                 return -EINVAL;
891 
892         if (jp->quality > 10)
893                 return -EINVAL;
894 
895         if (jp->sharpness > 63 || jp->agc > 63 || jp->picture > 63)
896                 return -EINVAL;
897 
898         if (jp->framerate > 31)
899                 return -EINVAL;
900 
901         mutex_lock(&meye.lock);
902 
903         if (meye.params.subsample != jp->subsample ||
904             meye.params.quality != jp->quality)
905                 mchip_hic_stop();       /* need restart */
906 
907         meye.params = *jp;
908         sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERASHARPNESS,
909                               meye.params.sharpness);
910         sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERAAGC,
911                               meye.params.agc);
912         sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERAPICTURE,
913                               meye.params.picture);
914         mutex_unlock(&meye.lock);
915 
916         return 0;
917 }
918 
919 static int meyeioc_qbuf_capt(int *nb)
920 {
921         if (!meye.grab_fbuffer)
922                 return -EINVAL;
923 
924         if (*nb >= gbuffers)
925                 return -EINVAL;
926 
927         if (*nb < 0) {
928                 /* stop capture */
929                 mchip_hic_stop();
930                 return 0;
931         }
932 
933         if (meye.grab_buffer[*nb].state != MEYE_BUF_UNUSED)
934                 return -EBUSY;
935 
936         mutex_lock(&meye.lock);
937 
938         if (meye.mchip_mode != MCHIP_HIC_MODE_CONT_COMP)
939                 mchip_cont_compression_start();
940 
941         meye.grab_buffer[*nb].state = MEYE_BUF_USING;
942         kfifo_in_locked(&meye.grabq, (unsigned char *)nb, sizeof(int),
943                          &meye.grabq_lock);
944         mutex_unlock(&meye.lock);
945 
946         return 0;
947 }
948 
949 static int meyeioc_sync(struct file *file, void *fh, int *i)
950 {
951         int unused;
952 
953         if (*i < 0 || *i >= gbuffers)
954                 return -EINVAL;
955 
956         mutex_lock(&meye.lock);
957         switch (meye.grab_buffer[*i].state) {
958 
959         case MEYE_BUF_UNUSED:
960                 mutex_unlock(&meye.lock);
961                 return -EINVAL;
962         case MEYE_BUF_USING:
963                 if (file->f_flags & O_NONBLOCK) {
964                         mutex_unlock(&meye.lock);
965                         return -EAGAIN;
966                 }
967                 if (wait_event_interruptible(meye.proc_list,
968                         (meye.grab_buffer[*i].state != MEYE_BUF_USING))) {
969                         mutex_unlock(&meye.lock);
970                         return -EINTR;
971                 }
972                 /* fall through */
973         case MEYE_BUF_DONE:
974                 meye.grab_buffer[*i].state = MEYE_BUF_UNUSED;
975                 if (kfifo_out_locked(&meye.doneq, (unsigned char *)&unused,
976                                 sizeof(int), &meye.doneq_lock) != sizeof(int))
977                                         break;
978         }
979         *i = meye.grab_buffer[*i].size;
980         mutex_unlock(&meye.lock);
981         return 0;
982 }
983 
984 static int meyeioc_stillcapt(void)
985 {
986         if (!meye.grab_fbuffer)
987                 return -EINVAL;
988 
989         if (meye.grab_buffer[0].state != MEYE_BUF_UNUSED)
990                 return -EBUSY;
991 
992         mutex_lock(&meye.lock);
993         meye.grab_buffer[0].state = MEYE_BUF_USING;
994         mchip_take_picture();
995 
996         mchip_get_picture(meye.grab_fbuffer,
997                         mchip_hsize() * mchip_vsize() * 2);
998 
999         meye.grab_buffer[0].state = MEYE_BUF_DONE;
1000         mutex_unlock(&meye.lock);
1001 
1002         return 0;
1003 }
1004 
1005 static int meyeioc_stilljcapt(int *len)
1006 {
1007         if (!meye.grab_fbuffer)
1008                 return -EINVAL;
1009 
1010         if (meye.grab_buffer[0].state != MEYE_BUF_UNUSED)
1011                 return -EBUSY;
1012 
1013         mutex_lock(&meye.lock);
1014         meye.grab_buffer[0].state = MEYE_BUF_USING;
1015         *len = -1;
1016 
1017         while (*len == -1) {
1018                 mchip_take_picture();
1019                 *len = mchip_compress_frame(meye.grab_fbuffer, gbufsize);
1020         }
1021 
1022         meye.grab_buffer[0].state = MEYE_BUF_DONE;
1023         mutex_unlock(&meye.lock);
1024         return 0;
1025 }
1026 
1027 static int vidioc_querycap(struct file *file, void *fh,
1028                                 struct v4l2_capability *cap)
1029 {
1030         strcpy(cap->driver, "meye");
1031         strcpy(cap->card, "meye");
1032         sprintf(cap->bus_info, "PCI:%s", pci_name(meye.mchip_dev));
1033 
1034         cap->version = (MEYE_DRIVER_MAJORVERSION << 8) +
1035                        MEYE_DRIVER_MINORVERSION;
1036 
1037         cap->device_caps = V4L2_CAP_VIDEO_CAPTURE |
1038                             V4L2_CAP_STREAMING;
1039         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1040 
1041         return 0;
1042 }
1043 
1044 static int vidioc_enum_input(struct file *file, void *fh, struct v4l2_input *i)
1045 {
1046         if (i->index != 0)
1047                 return -EINVAL;
1048 
1049         strcpy(i->name, "Camera");
1050         i->type = V4L2_INPUT_TYPE_CAMERA;
1051 
1052         return 0;
1053 }
1054 
1055 static int vidioc_g_input(struct file *file, void *fh, unsigned int *i)
1056 {
1057         *i = 0;
1058         return 0;
1059 }
1060 
1061 static int vidioc_s_input(struct file *file, void *fh, unsigned int i)
1062 {
1063         if (i != 0)
1064                 return -EINVAL;
1065 
1066         return 0;
1067 }
1068 
1069 static int meye_s_ctrl(struct v4l2_ctrl *ctrl)
1070 {
1071         mutex_lock(&meye.lock);
1072         switch (ctrl->id) {
1073         case V4L2_CID_BRIGHTNESS:
1074                 sony_pic_camera_command(
1075                         SONY_PIC_COMMAND_SETCAMERABRIGHTNESS, ctrl->val);
1076                 meye.brightness = ctrl->val << 10;
1077                 break;
1078         case V4L2_CID_HUE:
1079                 sony_pic_camera_command(
1080                         SONY_PIC_COMMAND_SETCAMERAHUE, ctrl->val);
1081                 meye.hue = ctrl->val << 10;
1082                 break;
1083         case V4L2_CID_CONTRAST:
1084                 sony_pic_camera_command(
1085                         SONY_PIC_COMMAND_SETCAMERACONTRAST, ctrl->val);
1086                 meye.contrast = ctrl->val << 10;
1087                 break;
1088         case V4L2_CID_SATURATION:
1089                 sony_pic_camera_command(
1090                         SONY_PIC_COMMAND_SETCAMERACOLOR, ctrl->val);
1091                 meye.colour = ctrl->val << 10;
1092                 break;
1093         case V4L2_CID_MEYE_AGC:
1094                 sony_pic_camera_command(
1095                         SONY_PIC_COMMAND_SETCAMERAAGC, ctrl->val);
1096                 meye.params.agc = ctrl->val;
1097                 break;
1098         case V4L2_CID_SHARPNESS:
1099                 sony_pic_camera_command(
1100                         SONY_PIC_COMMAND_SETCAMERASHARPNESS, ctrl->val);
1101                 meye.params.sharpness = ctrl->val;
1102                 break;
1103         case V4L2_CID_MEYE_PICTURE:
1104                 sony_pic_camera_command(
1105                         SONY_PIC_COMMAND_SETCAMERAPICTURE, ctrl->val);
1106                 meye.params.picture = ctrl->val;
1107                 break;
1108         case V4L2_CID_JPEG_COMPRESSION_QUALITY:
1109                 meye.params.quality = ctrl->val;
1110                 break;
1111         case V4L2_CID_MEYE_FRAMERATE:
1112                 meye.params.framerate = ctrl->val;
1113                 break;
1114         default:
1115                 mutex_unlock(&meye.lock);
1116                 return -EINVAL;
1117         }
1118         mutex_unlock(&meye.lock);
1119 
1120         return 0;
1121 }
1122 
1123 static int vidioc_enum_fmt_vid_cap(struct file *file, void *fh,
1124                                 struct v4l2_fmtdesc *f)
1125 {
1126         if (f->index > 1)
1127                 return -EINVAL;
1128 
1129         if (f->index == 0) {
1130                 /* standard YUV 422 capture */
1131                 f->flags = 0;
1132                 strcpy(f->description, "YUV422");
1133                 f->pixelformat = V4L2_PIX_FMT_YUYV;
1134         } else {
1135                 /* compressed MJPEG capture */
1136                 f->flags = V4L2_FMT_FLAG_COMPRESSED;
1137                 strcpy(f->description, "MJPEG");
1138                 f->pixelformat = V4L2_PIX_FMT_MJPEG;
1139         }
1140 
1141         return 0;
1142 }
1143 
1144 static int vidioc_try_fmt_vid_cap(struct file *file, void *fh,
1145                                 struct v4l2_format *f)
1146 {
1147         if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_YUYV &&
1148             f->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG)
1149                 return -EINVAL;
1150 
1151         if (f->fmt.pix.field != V4L2_FIELD_ANY &&
1152             f->fmt.pix.field != V4L2_FIELD_NONE)
1153                 return -EINVAL;
1154 
1155         f->fmt.pix.field = V4L2_FIELD_NONE;
1156 
1157         if (f->fmt.pix.width <= 320) {
1158                 f->fmt.pix.width = 320;
1159                 f->fmt.pix.height = 240;
1160         } else {
1161                 f->fmt.pix.width = 640;
1162                 f->fmt.pix.height = 480;
1163         }
1164 
1165         f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
1166         f->fmt.pix.sizeimage = f->fmt.pix.height *
1167                                f->fmt.pix.bytesperline;
1168         f->fmt.pix.colorspace = 0;
1169 
1170         return 0;
1171 }
1172 
1173 static int vidioc_g_fmt_vid_cap(struct file *file, void *fh,
1174                                     struct v4l2_format *f)
1175 {
1176         switch (meye.mchip_mode) {
1177         case MCHIP_HIC_MODE_CONT_OUT:
1178         default:
1179                 f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
1180                 break;
1181         case MCHIP_HIC_MODE_CONT_COMP:
1182                 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MJPEG;
1183                 break;
1184         }
1185 
1186         f->fmt.pix.field = V4L2_FIELD_NONE;
1187         f->fmt.pix.width = mchip_hsize();
1188         f->fmt.pix.height = mchip_vsize();
1189         f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
1190         f->fmt.pix.sizeimage = f->fmt.pix.height *
1191                                f->fmt.pix.bytesperline;
1192 
1193         return 0;
1194 }
1195 
1196 static int vidioc_s_fmt_vid_cap(struct file *file, void *fh,
1197                                     struct v4l2_format *f)
1198 {
1199         if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_YUYV &&
1200             f->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG)
1201                 return -EINVAL;
1202 
1203         if (f->fmt.pix.field != V4L2_FIELD_ANY &&
1204             f->fmt.pix.field != V4L2_FIELD_NONE)
1205                 return -EINVAL;
1206 
1207         f->fmt.pix.field = V4L2_FIELD_NONE;
1208         mutex_lock(&meye.lock);
1209 
1210         if (f->fmt.pix.width <= 320) {
1211                 f->fmt.pix.width = 320;
1212                 f->fmt.pix.height = 240;
1213                 meye.params.subsample = 1;
1214         } else {
1215                 f->fmt.pix.width = 640;
1216                 f->fmt.pix.height = 480;
1217                 meye.params.subsample = 0;
1218         }
1219 
1220         switch (f->fmt.pix.pixelformat) {
1221         case V4L2_PIX_FMT_YUYV:
1222                 meye.mchip_mode = MCHIP_HIC_MODE_CONT_OUT;
1223                 break;
1224         case V4L2_PIX_FMT_MJPEG:
1225                 meye.mchip_mode = MCHIP_HIC_MODE_CONT_COMP;
1226                 break;
1227         }
1228 
1229         mutex_unlock(&meye.lock);
1230         f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
1231         f->fmt.pix.sizeimage = f->fmt.pix.height *
1232                                f->fmt.pix.bytesperline;
1233         f->fmt.pix.colorspace = 0;
1234 
1235         return 0;
1236 }
1237 
1238 static int vidioc_reqbufs(struct file *file, void *fh,
1239                                 struct v4l2_requestbuffers *req)
1240 {
1241         int i;
1242 
1243         if (req->memory != V4L2_MEMORY_MMAP)
1244                 return -EINVAL;
1245 
1246         if (meye.grab_fbuffer && req->count == gbuffers) {
1247                 /* already allocated, no modifications */
1248                 return 0;
1249         }
1250 
1251         mutex_lock(&meye.lock);
1252         if (meye.grab_fbuffer) {
1253                 for (i = 0; i < gbuffers; i++)
1254                         if (meye.vma_use_count[i]) {
1255                                 mutex_unlock(&meye.lock);
1256                                 return -EINVAL;
1257                         }
1258                 rvfree(meye.grab_fbuffer, gbuffers * gbufsize);
1259                 meye.grab_fbuffer = NULL;
1260         }
1261 
1262         gbuffers = max(2, min((int)req->count, MEYE_MAX_BUFNBRS));
1263         req->count = gbuffers;
1264         meye.grab_fbuffer = rvmalloc(gbuffers * gbufsize);
1265 
1266         if (!meye.grab_fbuffer) {
1267                 printk(KERN_ERR "meye: v4l framebuffer allocation"
1268                                 " failed\n");
1269                 mutex_unlock(&meye.lock);
1270                 return -ENOMEM;
1271         }
1272 
1273         for (i = 0; i < gbuffers; i++)
1274                 meye.vma_use_count[i] = 0;
1275 
1276         mutex_unlock(&meye.lock);
1277 
1278         return 0;
1279 }
1280 
1281 static int vidioc_querybuf(struct file *file, void *fh, struct v4l2_buffer *buf)
1282 {
1283         unsigned int index = buf->index;
1284 
1285         if (index >= gbuffers)
1286                 return -EINVAL;
1287 
1288         buf->bytesused = meye.grab_buffer[index].size;
1289         buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1290 
1291         if (meye.grab_buffer[index].state == MEYE_BUF_USING)
1292                 buf->flags |= V4L2_BUF_FLAG_QUEUED;
1293 
1294         if (meye.grab_buffer[index].state == MEYE_BUF_DONE)
1295                 buf->flags |= V4L2_BUF_FLAG_DONE;
1296 
1297         buf->field = V4L2_FIELD_NONE;
1298         buf->timestamp = meye.grab_buffer[index].timestamp;
1299         buf->sequence = meye.grab_buffer[index].sequence;
1300         buf->memory = V4L2_MEMORY_MMAP;
1301         buf->m.offset = index * gbufsize;
1302         buf->length = gbufsize;
1303 
1304         return 0;
1305 }
1306 
1307 static int vidioc_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
1308 {
1309         if (buf->memory != V4L2_MEMORY_MMAP)
1310                 return -EINVAL;
1311 
1312         if (buf->index >= gbuffers)
1313                 return -EINVAL;
1314 
1315         if (meye.grab_buffer[buf->index].state != MEYE_BUF_UNUSED)
1316                 return -EINVAL;
1317 
1318         mutex_lock(&meye.lock);
1319         buf->flags |= V4L2_BUF_FLAG_QUEUED;
1320         buf->flags &= ~V4L2_BUF_FLAG_DONE;
1321         meye.grab_buffer[buf->index].state = MEYE_BUF_USING;
1322         kfifo_in_locked(&meye.grabq, (unsigned char *)&buf->index,
1323                         sizeof(int), &meye.grabq_lock);
1324         mutex_unlock(&meye.lock);
1325 
1326         return 0;
1327 }
1328 
1329 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
1330 {
1331         int reqnr;
1332 
1333         if (buf->memory != V4L2_MEMORY_MMAP)
1334                 return -EINVAL;
1335 
1336         mutex_lock(&meye.lock);
1337 
1338         if (kfifo_len(&meye.doneq) == 0 && file->f_flags & O_NONBLOCK) {
1339                 mutex_unlock(&meye.lock);
1340                 return -EAGAIN;
1341         }
1342 
1343         if (wait_event_interruptible(meye.proc_list,
1344                                      kfifo_len(&meye.doneq) != 0) < 0) {
1345                 mutex_unlock(&meye.lock);
1346                 return -EINTR;
1347         }
1348 
1349         if (!kfifo_out_locked(&meye.doneq, (unsigned char *)&reqnr,
1350                        sizeof(int), &meye.doneq_lock)) {
1351                 mutex_unlock(&meye.lock);
1352                 return -EBUSY;
1353         }
1354 
1355         if (meye.grab_buffer[reqnr].state != MEYE_BUF_DONE) {
1356                 mutex_unlock(&meye.lock);
1357                 return -EINVAL;
1358         }
1359 
1360         buf->index = reqnr;
1361         buf->bytesused = meye.grab_buffer[reqnr].size;
1362         buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1363         buf->field = V4L2_FIELD_NONE;
1364         buf->timestamp = meye.grab_buffer[reqnr].timestamp;
1365         buf->sequence = meye.grab_buffer[reqnr].sequence;
1366         buf->memory = V4L2_MEMORY_MMAP;
1367         buf->m.offset = reqnr * gbufsize;
1368         buf->length = gbufsize;
1369         meye.grab_buffer[reqnr].state = MEYE_BUF_UNUSED;
1370         mutex_unlock(&meye.lock);
1371 
1372         return 0;
1373 }
1374 
1375 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1376 {
1377         mutex_lock(&meye.lock);
1378 
1379         switch (meye.mchip_mode) {
1380         case MCHIP_HIC_MODE_CONT_OUT:
1381                 mchip_continuous_start();
1382                 break;
1383         case MCHIP_HIC_MODE_CONT_COMP:
1384                 mchip_cont_compression_start();
1385                 break;
1386         default:
1387                 mutex_unlock(&meye.lock);
1388                 return -EINVAL;
1389         }
1390 
1391         mutex_unlock(&meye.lock);
1392 
1393         return 0;
1394 }
1395 
1396 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1397 {
1398         mutex_lock(&meye.lock);
1399         mchip_hic_stop();
1400         kfifo_reset(&meye.grabq);
1401         kfifo_reset(&meye.doneq);
1402 
1403         for (i = 0; i < MEYE_MAX_BUFNBRS; i++)
1404                 meye.grab_buffer[i].state = MEYE_BUF_UNUSED;
1405 
1406         mutex_unlock(&meye.lock);
1407         return 0;
1408 }
1409 
1410 static long vidioc_default(struct file *file, void *fh, bool valid_prio,
1411                            unsigned int cmd, void *arg)
1412 {
1413         switch (cmd) {
1414         case MEYEIOC_G_PARAMS:
1415                 return meyeioc_g_params((struct meye_params *) arg);
1416 
1417         case MEYEIOC_S_PARAMS:
1418                 return meyeioc_s_params((struct meye_params *) arg);
1419 
1420         case MEYEIOC_QBUF_CAPT:
1421                 return meyeioc_qbuf_capt((int *) arg);
1422 
1423         case MEYEIOC_SYNC:
1424                 return meyeioc_sync(file, fh, (int *) arg);
1425 
1426         case MEYEIOC_STILLCAPT:
1427                 return meyeioc_stillcapt();
1428 
1429         case MEYEIOC_STILLJCAPT:
1430                 return meyeioc_stilljcapt((int *) arg);
1431 
1432         default:
1433                 return -ENOTTY;
1434         }
1435 
1436 }
1437 
1438 static unsigned int meye_poll(struct file *file, poll_table *wait)
1439 {
1440         unsigned int res = v4l2_ctrl_poll(file, wait);
1441 
1442         mutex_lock(&meye.lock);
1443         poll_wait(file, &meye.proc_list, wait);
1444         if (kfifo_len(&meye.doneq))
1445                 res |= POLLIN | POLLRDNORM;
1446         mutex_unlock(&meye.lock);
1447         return res;
1448 }
1449 
1450 static void meye_vm_open(struct vm_area_struct *vma)
1451 {
1452         long idx = (long)vma->vm_private_data;
1453         meye.vma_use_count[idx]++;
1454 }
1455 
1456 static void meye_vm_close(struct vm_area_struct *vma)
1457 {
1458         long idx = (long)vma->vm_private_data;
1459         meye.vma_use_count[idx]--;
1460 }
1461 
1462 static const struct vm_operations_struct meye_vm_ops = {
1463         .open           = meye_vm_open,
1464         .close          = meye_vm_close,
1465 };
1466 
1467 static int meye_mmap(struct file *file, struct vm_area_struct *vma)
1468 {
1469         unsigned long start = vma->vm_start;
1470         unsigned long size = vma->vm_end - vma->vm_start;
1471         unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
1472         unsigned long page, pos;
1473 
1474         mutex_lock(&meye.lock);
1475         if (size > gbuffers * gbufsize) {
1476                 mutex_unlock(&meye.lock);
1477                 return -EINVAL;
1478         }
1479         if (!meye.grab_fbuffer) {
1480                 int i;
1481 
1482                 /* lazy allocation */
1483                 meye.grab_fbuffer = rvmalloc(gbuffers*gbufsize);
1484                 if (!meye.grab_fbuffer) {
1485                         printk(KERN_ERR "meye: v4l framebuffer allocation failed\n");
1486                         mutex_unlock(&meye.lock);
1487                         return -ENOMEM;
1488                 }
1489                 for (i = 0; i < gbuffers; i++)
1490                         meye.vma_use_count[i] = 0;
1491         }
1492         pos = (unsigned long)meye.grab_fbuffer + offset;
1493 
1494         while (size > 0) {
1495                 page = vmalloc_to_pfn((void *)pos);
1496                 if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) {
1497                         mutex_unlock(&meye.lock);
1498                         return -EAGAIN;
1499                 }
1500                 start += PAGE_SIZE;
1501                 pos += PAGE_SIZE;
1502                 if (size > PAGE_SIZE)
1503                         size -= PAGE_SIZE;
1504                 else
1505                         size = 0;
1506         }
1507 
1508         vma->vm_ops = &meye_vm_ops;
1509         vma->vm_flags &= ~VM_IO;        /* not I/O memory */
1510         vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
1511         vma->vm_private_data = (void *) (offset / gbufsize);
1512         meye_vm_open(vma);
1513 
1514         mutex_unlock(&meye.lock);
1515         return 0;
1516 }
1517 
1518 static const struct v4l2_file_operations meye_fops = {
1519         .owner          = THIS_MODULE,
1520         .open           = meye_open,
1521         .release        = meye_release,
1522         .mmap           = meye_mmap,
1523         .unlocked_ioctl = video_ioctl2,
1524         .poll           = meye_poll,
1525 };
1526 
1527 static const struct v4l2_ioctl_ops meye_ioctl_ops = {
1528         .vidioc_querycap        = vidioc_querycap,
1529         .vidioc_enum_input      = vidioc_enum_input,
1530         .vidioc_g_input         = vidioc_g_input,
1531         .vidioc_s_input         = vidioc_s_input,
1532         .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1533         .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1534         .vidioc_g_fmt_vid_cap   = vidioc_g_fmt_vid_cap,
1535         .vidioc_s_fmt_vid_cap   = vidioc_s_fmt_vid_cap,
1536         .vidioc_reqbufs         = vidioc_reqbufs,
1537         .vidioc_querybuf        = vidioc_querybuf,
1538         .vidioc_qbuf            = vidioc_qbuf,
1539         .vidioc_dqbuf           = vidioc_dqbuf,
1540         .vidioc_streamon        = vidioc_streamon,
1541         .vidioc_streamoff       = vidioc_streamoff,
1542         .vidioc_log_status      = v4l2_ctrl_log_status,
1543         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1544         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1545         .vidioc_default         = vidioc_default,
1546 };
1547 
1548 static struct video_device meye_template = {
1549         .name           = "meye",
1550         .fops           = &meye_fops,
1551         .ioctl_ops      = &meye_ioctl_ops,
1552         .release        = video_device_release,
1553 };
1554 
1555 static const struct v4l2_ctrl_ops meye_ctrl_ops = {
1556         .s_ctrl = meye_s_ctrl,
1557 };
1558 
1559 #ifdef CONFIG_PM
1560 static int meye_suspend(struct pci_dev *pdev, pm_message_t state)
1561 {
1562         pci_save_state(pdev);
1563         meye.pm_mchip_mode = meye.mchip_mode;
1564         mchip_hic_stop();
1565         mchip_set(MCHIP_MM_INTA, 0x0);
1566         return 0;
1567 }
1568 
1569 static int meye_resume(struct pci_dev *pdev)
1570 {
1571         pci_restore_state(pdev);
1572         pci_write_config_word(meye.mchip_dev, MCHIP_PCI_SOFTRESET_SET, 1);
1573 
1574         mchip_delay(MCHIP_HIC_CMD, 0);
1575         mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE);
1576         msleep(1);
1577         mchip_set(MCHIP_VRJ_SOFT_RESET, 1);
1578         msleep(1);
1579         mchip_set(MCHIP_MM_PCI_MODE, 5);
1580         msleep(1);
1581         mchip_set(MCHIP_MM_INTA, MCHIP_MM_INTA_HIC_1_MASK);
1582 
1583         switch (meye.pm_mchip_mode) {
1584         case MCHIP_HIC_MODE_CONT_OUT:
1585                 mchip_continuous_start();
1586                 break;
1587         case MCHIP_HIC_MODE_CONT_COMP:
1588                 mchip_cont_compression_start();
1589                 break;
1590         }
1591         return 0;
1592 }
1593 #endif
1594 
1595 static int meye_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
1596 {
1597         static const struct v4l2_ctrl_config ctrl_agc = {
1598                 .id = V4L2_CID_MEYE_AGC,
1599                 .type = V4L2_CTRL_TYPE_INTEGER,
1600                 .ops = &meye_ctrl_ops,
1601                 .name = "AGC",
1602                 .max = 63,
1603                 .step = 1,
1604                 .def = 48,
1605                 .flags = V4L2_CTRL_FLAG_SLIDER,
1606         };
1607         static const struct v4l2_ctrl_config ctrl_picture = {
1608                 .id = V4L2_CID_MEYE_PICTURE,
1609                 .type = V4L2_CTRL_TYPE_INTEGER,
1610                 .ops = &meye_ctrl_ops,
1611                 .name = "Picture",
1612                 .max = 63,
1613                 .step = 1,
1614         };
1615         static const struct v4l2_ctrl_config ctrl_framerate = {
1616                 .id = V4L2_CID_MEYE_FRAMERATE,
1617                 .type = V4L2_CTRL_TYPE_INTEGER,
1618                 .ops = &meye_ctrl_ops,
1619                 .name = "Framerate",
1620                 .max = 31,
1621                 .step = 1,
1622         };
1623         struct v4l2_device *v4l2_dev = &meye.v4l2_dev;
1624         int ret = -EBUSY;
1625         unsigned long mchip_adr;
1626 
1627         if (meye.mchip_dev != NULL) {
1628                 printk(KERN_ERR "meye: only one device allowed!\n");
1629                 goto outnotdev;
1630         }
1631 
1632         ret = v4l2_device_register(&pcidev->dev, v4l2_dev);
1633         if (ret < 0) {
1634                 v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
1635                 return ret;
1636         }
1637         ret = -ENOMEM;
1638         meye.mchip_dev = pcidev;
1639         meye.vdev = video_device_alloc();
1640         if (!meye.vdev) {
1641                 v4l2_err(v4l2_dev, "video_device_alloc() failed!\n");
1642                 goto outnotdev;
1643         }
1644 
1645         meye.grab_temp = vmalloc(MCHIP_NB_PAGES_MJPEG * PAGE_SIZE);
1646         if (!meye.grab_temp) {
1647                 v4l2_err(v4l2_dev, "grab buffer allocation failed\n");
1648                 goto outvmalloc;
1649         }
1650 
1651         spin_lock_init(&meye.grabq_lock);
1652         if (kfifo_alloc(&meye.grabq, sizeof(int) * MEYE_MAX_BUFNBRS,
1653                                 GFP_KERNEL)) {
1654                 v4l2_err(v4l2_dev, "fifo allocation failed\n");
1655                 goto outkfifoalloc1;
1656         }
1657         spin_lock_init(&meye.doneq_lock);
1658         if (kfifo_alloc(&meye.doneq, sizeof(int) * MEYE_MAX_BUFNBRS,
1659                                 GFP_KERNEL)) {
1660                 v4l2_err(v4l2_dev, "fifo allocation failed\n");
1661                 goto outkfifoalloc2;
1662         }
1663 
1664         memcpy(meye.vdev, &meye_template, sizeof(meye_template));
1665         meye.vdev->v4l2_dev = &meye.v4l2_dev;
1666 
1667         ret = -EIO;
1668         if ((ret = sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERA, 1))) {
1669                 v4l2_err(v4l2_dev, "meye: unable to power on the camera\n");
1670                 v4l2_err(v4l2_dev, "meye: did you enable the camera in "
1671                                 "sonypi using the module options ?\n");
1672                 goto outsonypienable;
1673         }
1674 
1675         if ((ret = pci_enable_device(meye.mchip_dev))) {
1676                 v4l2_err(v4l2_dev, "meye: pci_enable_device failed\n");
1677                 goto outenabledev;
1678         }
1679 
1680         mchip_adr = pci_resource_start(meye.mchip_dev,0);
1681         if (!mchip_adr) {
1682                 v4l2_err(v4l2_dev, "meye: mchip has no device base address\n");
1683                 goto outregions;
1684         }
1685         if (!request_mem_region(pci_resource_start(meye.mchip_dev, 0),
1686                                 pci_resource_len(meye.mchip_dev, 0),
1687                                 "meye")) {
1688                 v4l2_err(v4l2_dev, "meye: request_mem_region failed\n");
1689                 goto outregions;
1690         }
1691         meye.mchip_mmregs = ioremap(mchip_adr, MCHIP_MM_REGS);
1692         if (!meye.mchip_mmregs) {
1693                 v4l2_err(v4l2_dev, "meye: ioremap failed\n");
1694                 goto outremap;
1695         }
1696 
1697         meye.mchip_irq = pcidev->irq;
1698         if (request_irq(meye.mchip_irq, meye_irq,
1699                         IRQF_SHARED, "meye", meye_irq)) {
1700                 v4l2_err(v4l2_dev, "request_irq failed\n");
1701                 goto outreqirq;
1702         }
1703 
1704         pci_write_config_byte(meye.mchip_dev, PCI_CACHE_LINE_SIZE, 8);
1705         pci_write_config_byte(meye.mchip_dev, PCI_LATENCY_TIMER, 64);
1706 
1707         pci_set_master(meye.mchip_dev);
1708 
1709         /* Ask the camera to perform a soft reset. */
1710         pci_write_config_word(meye.mchip_dev, MCHIP_PCI_SOFTRESET_SET, 1);
1711 
1712         mchip_delay(MCHIP_HIC_CMD, 0);
1713         mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE);
1714 
1715         msleep(1);
1716         mchip_set(MCHIP_VRJ_SOFT_RESET, 1);
1717 
1718         msleep(1);
1719         mchip_set(MCHIP_MM_PCI_MODE, 5);
1720 
1721         msleep(1);
1722         mchip_set(MCHIP_MM_INTA, MCHIP_MM_INTA_HIC_1_MASK);
1723 
1724         mutex_init(&meye.lock);
1725         init_waitqueue_head(&meye.proc_list);
1726 
1727         v4l2_ctrl_handler_init(&meye.hdl, 3);
1728         v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops,
1729                           V4L2_CID_BRIGHTNESS, 0, 63, 1, 32);
1730         v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops,
1731                           V4L2_CID_HUE, 0, 63, 1, 32);
1732         v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops,
1733                           V4L2_CID_CONTRAST, 0, 63, 1, 32);
1734         v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops,
1735                           V4L2_CID_SATURATION, 0, 63, 1, 32);
1736         v4l2_ctrl_new_custom(&meye.hdl, &ctrl_agc, NULL);
1737         v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops,
1738                           V4L2_CID_SHARPNESS, 0, 63, 1, 32);
1739         v4l2_ctrl_new_custom(&meye.hdl, &ctrl_picture, NULL);
1740         v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops,
1741                           V4L2_CID_JPEG_COMPRESSION_QUALITY, 0, 10, 1, 8);
1742         v4l2_ctrl_new_custom(&meye.hdl, &ctrl_framerate, NULL);
1743         if (meye.hdl.error) {
1744                 v4l2_err(v4l2_dev, "couldn't register controls\n");
1745                 goto outvideoreg;
1746         }
1747 
1748         v4l2_ctrl_handler_setup(&meye.hdl);
1749         meye.vdev->ctrl_handler = &meye.hdl;
1750 
1751         if (video_register_device(meye.vdev, VFL_TYPE_GRABBER,
1752                                   video_nr) < 0) {
1753                 v4l2_err(v4l2_dev, "video_register_device failed\n");
1754                 goto outvideoreg;
1755         }
1756 
1757         v4l2_info(v4l2_dev, "Motion Eye Camera Driver v%s.\n",
1758                MEYE_DRIVER_VERSION);
1759         v4l2_info(v4l2_dev, "mchip KL5A72002 rev. %d, base %lx, irq %d\n",
1760                meye.mchip_dev->revision, mchip_adr, meye.mchip_irq);
1761 
1762         return 0;
1763 
1764 outvideoreg:
1765         v4l2_ctrl_handler_free(&meye.hdl);
1766         free_irq(meye.mchip_irq, meye_irq);
1767 outreqirq:
1768         iounmap(meye.mchip_mmregs);
1769 outremap:
1770         release_mem_region(pci_resource_start(meye.mchip_dev, 0),
1771                            pci_resource_len(meye.mchip_dev, 0));
1772 outregions:
1773         pci_disable_device(meye.mchip_dev);
1774 outenabledev:
1775         sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERA, 0);
1776 outsonypienable:
1777         kfifo_free(&meye.doneq);
1778 outkfifoalloc2:
1779         kfifo_free(&meye.grabq);
1780 outkfifoalloc1:
1781         vfree(meye.grab_temp);
1782 outvmalloc:
1783         video_device_release(meye.vdev);
1784 outnotdev:
1785         return ret;
1786 }
1787 
1788 static void meye_remove(struct pci_dev *pcidev)
1789 {
1790         video_unregister_device(meye.vdev);
1791 
1792         mchip_hic_stop();
1793 
1794         mchip_dma_free();
1795 
1796         /* disable interrupts */
1797         mchip_set(MCHIP_MM_INTA, 0x0);
1798 
1799         free_irq(meye.mchip_irq, meye_irq);
1800 
1801         iounmap(meye.mchip_mmregs);
1802 
1803         release_mem_region(pci_resource_start(meye.mchip_dev, 0),
1804                            pci_resource_len(meye.mchip_dev, 0));
1805 
1806         pci_disable_device(meye.mchip_dev);
1807 
1808         sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERA, 0);
1809 
1810         kfifo_free(&meye.doneq);
1811         kfifo_free(&meye.grabq);
1812 
1813         vfree(meye.grab_temp);
1814 
1815         if (meye.grab_fbuffer) {
1816                 rvfree(meye.grab_fbuffer, gbuffers*gbufsize);
1817                 meye.grab_fbuffer = NULL;
1818         }
1819 
1820         printk(KERN_INFO "meye: removed\n");
1821 }
1822 
1823 static struct pci_device_id meye_pci_tbl[] = {
1824         { PCI_VDEVICE(KAWASAKI, PCI_DEVICE_ID_MCHIP_KL5A72002), 0 },
1825         { }
1826 };
1827 
1828 MODULE_DEVICE_TABLE(pci, meye_pci_tbl);
1829 
1830 static struct pci_driver meye_driver = {
1831         .name           = "meye",
1832         .id_table       = meye_pci_tbl,
1833         .probe          = meye_probe,
1834         .remove         = meye_remove,
1835 #ifdef CONFIG_PM
1836         .suspend        = meye_suspend,
1837         .resume         = meye_resume,
1838 #endif
1839 };
1840 
1841 static int __init meye_init(void)
1842 {
1843         gbuffers = max(2, min((int)gbuffers, MEYE_MAX_BUFNBRS));
1844         if (gbufsize > MEYE_MAX_BUFSIZE)
1845                 gbufsize = MEYE_MAX_BUFSIZE;
1846         gbufsize = PAGE_ALIGN(gbufsize);
1847         printk(KERN_INFO "meye: using %d buffers with %dk (%dk total) "
1848                          "for capture\n",
1849                          gbuffers,
1850                          gbufsize / 1024, gbuffers * gbufsize / 1024);
1851         return pci_register_driver(&meye_driver);
1852 }
1853 
1854 static void __exit meye_exit(void)
1855 {
1856         pci_unregister_driver(&meye_driver);
1857 }
1858 
1859 module_init(meye_init);
1860 module_exit(meye_exit);
1861 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us