Version:  2.0.40 2.2.26 2.4.37 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2

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->device_caps = V4L2_CAP_VIDEO_CAPTURE |
1035                             V4L2_CAP_STREAMING;
1036         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1037 
1038         return 0;
1039 }
1040 
1041 static int vidioc_enum_input(struct file *file, void *fh, struct v4l2_input *i)
1042 {
1043         if (i->index != 0)
1044                 return -EINVAL;
1045 
1046         strcpy(i->name, "Camera");
1047         i->type = V4L2_INPUT_TYPE_CAMERA;
1048 
1049         return 0;
1050 }
1051 
1052 static int vidioc_g_input(struct file *file, void *fh, unsigned int *i)
1053 {
1054         *i = 0;
1055         return 0;
1056 }
1057 
1058 static int vidioc_s_input(struct file *file, void *fh, unsigned int i)
1059 {
1060         if (i != 0)
1061                 return -EINVAL;
1062 
1063         return 0;
1064 }
1065 
1066 static int meye_s_ctrl(struct v4l2_ctrl *ctrl)
1067 {
1068         mutex_lock(&meye.lock);
1069         switch (ctrl->id) {
1070         case V4L2_CID_BRIGHTNESS:
1071                 sony_pic_camera_command(
1072                         SONY_PIC_COMMAND_SETCAMERABRIGHTNESS, ctrl->val);
1073                 meye.brightness = ctrl->val << 10;
1074                 break;
1075         case V4L2_CID_HUE:
1076                 sony_pic_camera_command(
1077                         SONY_PIC_COMMAND_SETCAMERAHUE, ctrl->val);
1078                 meye.hue = ctrl->val << 10;
1079                 break;
1080         case V4L2_CID_CONTRAST:
1081                 sony_pic_camera_command(
1082                         SONY_PIC_COMMAND_SETCAMERACONTRAST, ctrl->val);
1083                 meye.contrast = ctrl->val << 10;
1084                 break;
1085         case V4L2_CID_SATURATION:
1086                 sony_pic_camera_command(
1087                         SONY_PIC_COMMAND_SETCAMERACOLOR, ctrl->val);
1088                 meye.colour = ctrl->val << 10;
1089                 break;
1090         case V4L2_CID_MEYE_AGC:
1091                 sony_pic_camera_command(
1092                         SONY_PIC_COMMAND_SETCAMERAAGC, ctrl->val);
1093                 meye.params.agc = ctrl->val;
1094                 break;
1095         case V4L2_CID_SHARPNESS:
1096                 sony_pic_camera_command(
1097                         SONY_PIC_COMMAND_SETCAMERASHARPNESS, ctrl->val);
1098                 meye.params.sharpness = ctrl->val;
1099                 break;
1100         case V4L2_CID_MEYE_PICTURE:
1101                 sony_pic_camera_command(
1102                         SONY_PIC_COMMAND_SETCAMERAPICTURE, ctrl->val);
1103                 meye.params.picture = ctrl->val;
1104                 break;
1105         case V4L2_CID_JPEG_COMPRESSION_QUALITY:
1106                 meye.params.quality = ctrl->val;
1107                 break;
1108         case V4L2_CID_MEYE_FRAMERATE:
1109                 meye.params.framerate = ctrl->val;
1110                 break;
1111         default:
1112                 mutex_unlock(&meye.lock);
1113                 return -EINVAL;
1114         }
1115         mutex_unlock(&meye.lock);
1116 
1117         return 0;
1118 }
1119 
1120 static int vidioc_enum_fmt_vid_cap(struct file *file, void *fh,
1121                                 struct v4l2_fmtdesc *f)
1122 {
1123         if (f->index > 1)
1124                 return -EINVAL;
1125 
1126         if (f->index == 0) {
1127                 /* standard YUV 422 capture */
1128                 f->flags = 0;
1129                 strcpy(f->description, "YUV422");
1130                 f->pixelformat = V4L2_PIX_FMT_YUYV;
1131         } else {
1132                 /* compressed MJPEG capture */
1133                 f->flags = V4L2_FMT_FLAG_COMPRESSED;
1134                 strcpy(f->description, "MJPEG");
1135                 f->pixelformat = V4L2_PIX_FMT_MJPEG;
1136         }
1137 
1138         return 0;
1139 }
1140 
1141 static int vidioc_try_fmt_vid_cap(struct file *file, void *fh,
1142                                 struct v4l2_format *f)
1143 {
1144         if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_YUYV &&
1145             f->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG)
1146                 return -EINVAL;
1147 
1148         if (f->fmt.pix.field != V4L2_FIELD_ANY &&
1149             f->fmt.pix.field != V4L2_FIELD_NONE)
1150                 return -EINVAL;
1151 
1152         f->fmt.pix.field = V4L2_FIELD_NONE;
1153 
1154         if (f->fmt.pix.width <= 320) {
1155                 f->fmt.pix.width = 320;
1156                 f->fmt.pix.height = 240;
1157         } else {
1158                 f->fmt.pix.width = 640;
1159                 f->fmt.pix.height = 480;
1160         }
1161 
1162         f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
1163         f->fmt.pix.sizeimage = f->fmt.pix.height *
1164                                f->fmt.pix.bytesperline;
1165         f->fmt.pix.colorspace = 0;
1166 
1167         return 0;
1168 }
1169 
1170 static int vidioc_g_fmt_vid_cap(struct file *file, void *fh,
1171                                     struct v4l2_format *f)
1172 {
1173         switch (meye.mchip_mode) {
1174         case MCHIP_HIC_MODE_CONT_OUT:
1175         default:
1176                 f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
1177                 break;
1178         case MCHIP_HIC_MODE_CONT_COMP:
1179                 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MJPEG;
1180                 break;
1181         }
1182 
1183         f->fmt.pix.field = V4L2_FIELD_NONE;
1184         f->fmt.pix.width = mchip_hsize();
1185         f->fmt.pix.height = mchip_vsize();
1186         f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
1187         f->fmt.pix.sizeimage = f->fmt.pix.height *
1188                                f->fmt.pix.bytesperline;
1189 
1190         return 0;
1191 }
1192 
1193 static int vidioc_s_fmt_vid_cap(struct file *file, void *fh,
1194                                     struct v4l2_format *f)
1195 {
1196         if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_YUYV &&
1197             f->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG)
1198                 return -EINVAL;
1199 
1200         if (f->fmt.pix.field != V4L2_FIELD_ANY &&
1201             f->fmt.pix.field != V4L2_FIELD_NONE)
1202                 return -EINVAL;
1203 
1204         f->fmt.pix.field = V4L2_FIELD_NONE;
1205         mutex_lock(&meye.lock);
1206 
1207         if (f->fmt.pix.width <= 320) {
1208                 f->fmt.pix.width = 320;
1209                 f->fmt.pix.height = 240;
1210                 meye.params.subsample = 1;
1211         } else {
1212                 f->fmt.pix.width = 640;
1213                 f->fmt.pix.height = 480;
1214                 meye.params.subsample = 0;
1215         }
1216 
1217         switch (f->fmt.pix.pixelformat) {
1218         case V4L2_PIX_FMT_YUYV:
1219                 meye.mchip_mode = MCHIP_HIC_MODE_CONT_OUT;
1220                 break;
1221         case V4L2_PIX_FMT_MJPEG:
1222                 meye.mchip_mode = MCHIP_HIC_MODE_CONT_COMP;
1223                 break;
1224         }
1225 
1226         mutex_unlock(&meye.lock);
1227         f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
1228         f->fmt.pix.sizeimage = f->fmt.pix.height *
1229                                f->fmt.pix.bytesperline;
1230         f->fmt.pix.colorspace = 0;
1231 
1232         return 0;
1233 }
1234 
1235 static int vidioc_reqbufs(struct file *file, void *fh,
1236                                 struct v4l2_requestbuffers *req)
1237 {
1238         int i;
1239 
1240         if (req->memory != V4L2_MEMORY_MMAP)
1241                 return -EINVAL;
1242 
1243         if (meye.grab_fbuffer && req->count == gbuffers) {
1244                 /* already allocated, no modifications */
1245                 return 0;
1246         }
1247 
1248         mutex_lock(&meye.lock);
1249         if (meye.grab_fbuffer) {
1250                 for (i = 0; i < gbuffers; i++)
1251                         if (meye.vma_use_count[i]) {
1252                                 mutex_unlock(&meye.lock);
1253                                 return -EINVAL;
1254                         }
1255                 rvfree(meye.grab_fbuffer, gbuffers * gbufsize);
1256                 meye.grab_fbuffer = NULL;
1257         }
1258 
1259         gbuffers = max(2, min((int)req->count, MEYE_MAX_BUFNBRS));
1260         req->count = gbuffers;
1261         meye.grab_fbuffer = rvmalloc(gbuffers * gbufsize);
1262 
1263         if (!meye.grab_fbuffer) {
1264                 printk(KERN_ERR "meye: v4l framebuffer allocation"
1265                                 " failed\n");
1266                 mutex_unlock(&meye.lock);
1267                 return -ENOMEM;
1268         }
1269 
1270         for (i = 0; i < gbuffers; i++)
1271                 meye.vma_use_count[i] = 0;
1272 
1273         mutex_unlock(&meye.lock);
1274 
1275         return 0;
1276 }
1277 
1278 static int vidioc_querybuf(struct file *file, void *fh, struct v4l2_buffer *buf)
1279 {
1280         unsigned int index = buf->index;
1281 
1282         if (index >= gbuffers)
1283                 return -EINVAL;
1284 
1285         buf->bytesused = meye.grab_buffer[index].size;
1286         buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1287 
1288         if (meye.grab_buffer[index].state == MEYE_BUF_USING)
1289                 buf->flags |= V4L2_BUF_FLAG_QUEUED;
1290 
1291         if (meye.grab_buffer[index].state == MEYE_BUF_DONE)
1292                 buf->flags |= V4L2_BUF_FLAG_DONE;
1293 
1294         buf->field = V4L2_FIELD_NONE;
1295         buf->timestamp = meye.grab_buffer[index].timestamp;
1296         buf->sequence = meye.grab_buffer[index].sequence;
1297         buf->memory = V4L2_MEMORY_MMAP;
1298         buf->m.offset = index * gbufsize;
1299         buf->length = gbufsize;
1300 
1301         return 0;
1302 }
1303 
1304 static int vidioc_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
1305 {
1306         if (buf->memory != V4L2_MEMORY_MMAP)
1307                 return -EINVAL;
1308 
1309         if (buf->index >= gbuffers)
1310                 return -EINVAL;
1311 
1312         if (meye.grab_buffer[buf->index].state != MEYE_BUF_UNUSED)
1313                 return -EINVAL;
1314 
1315         mutex_lock(&meye.lock);
1316         buf->flags |= V4L2_BUF_FLAG_QUEUED;
1317         buf->flags &= ~V4L2_BUF_FLAG_DONE;
1318         meye.grab_buffer[buf->index].state = MEYE_BUF_USING;
1319         kfifo_in_locked(&meye.grabq, (unsigned char *)&buf->index,
1320                         sizeof(int), &meye.grabq_lock);
1321         mutex_unlock(&meye.lock);
1322 
1323         return 0;
1324 }
1325 
1326 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
1327 {
1328         int reqnr;
1329 
1330         if (buf->memory != V4L2_MEMORY_MMAP)
1331                 return -EINVAL;
1332 
1333         mutex_lock(&meye.lock);
1334 
1335         if (kfifo_len(&meye.doneq) == 0 && file->f_flags & O_NONBLOCK) {
1336                 mutex_unlock(&meye.lock);
1337                 return -EAGAIN;
1338         }
1339 
1340         if (wait_event_interruptible(meye.proc_list,
1341                                      kfifo_len(&meye.doneq) != 0) < 0) {
1342                 mutex_unlock(&meye.lock);
1343                 return -EINTR;
1344         }
1345 
1346         if (!kfifo_out_locked(&meye.doneq, (unsigned char *)&reqnr,
1347                        sizeof(int), &meye.doneq_lock)) {
1348                 mutex_unlock(&meye.lock);
1349                 return -EBUSY;
1350         }
1351 
1352         if (meye.grab_buffer[reqnr].state != MEYE_BUF_DONE) {
1353                 mutex_unlock(&meye.lock);
1354                 return -EINVAL;
1355         }
1356 
1357         buf->index = reqnr;
1358         buf->bytesused = meye.grab_buffer[reqnr].size;
1359         buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1360         buf->field = V4L2_FIELD_NONE;
1361         buf->timestamp = meye.grab_buffer[reqnr].timestamp;
1362         buf->sequence = meye.grab_buffer[reqnr].sequence;
1363         buf->memory = V4L2_MEMORY_MMAP;
1364         buf->m.offset = reqnr * gbufsize;
1365         buf->length = gbufsize;
1366         meye.grab_buffer[reqnr].state = MEYE_BUF_UNUSED;
1367         mutex_unlock(&meye.lock);
1368 
1369         return 0;
1370 }
1371 
1372 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1373 {
1374         mutex_lock(&meye.lock);
1375 
1376         switch (meye.mchip_mode) {
1377         case MCHIP_HIC_MODE_CONT_OUT:
1378                 mchip_continuous_start();
1379                 break;
1380         case MCHIP_HIC_MODE_CONT_COMP:
1381                 mchip_cont_compression_start();
1382                 break;
1383         default:
1384                 mutex_unlock(&meye.lock);
1385                 return -EINVAL;
1386         }
1387 
1388         mutex_unlock(&meye.lock);
1389 
1390         return 0;
1391 }
1392 
1393 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1394 {
1395         mutex_lock(&meye.lock);
1396         mchip_hic_stop();
1397         kfifo_reset(&meye.grabq);
1398         kfifo_reset(&meye.doneq);
1399 
1400         for (i = 0; i < MEYE_MAX_BUFNBRS; i++)
1401                 meye.grab_buffer[i].state = MEYE_BUF_UNUSED;
1402 
1403         mutex_unlock(&meye.lock);
1404         return 0;
1405 }
1406 
1407 static long vidioc_default(struct file *file, void *fh, bool valid_prio,
1408                            unsigned int cmd, void *arg)
1409 {
1410         switch (cmd) {
1411         case MEYEIOC_G_PARAMS:
1412                 return meyeioc_g_params((struct meye_params *) arg);
1413 
1414         case MEYEIOC_S_PARAMS:
1415                 return meyeioc_s_params((struct meye_params *) arg);
1416 
1417         case MEYEIOC_QBUF_CAPT:
1418                 return meyeioc_qbuf_capt((int *) arg);
1419 
1420         case MEYEIOC_SYNC:
1421                 return meyeioc_sync(file, fh, (int *) arg);
1422 
1423         case MEYEIOC_STILLCAPT:
1424                 return meyeioc_stillcapt();
1425 
1426         case MEYEIOC_STILLJCAPT:
1427                 return meyeioc_stilljcapt((int *) arg);
1428 
1429         default:
1430                 return -ENOTTY;
1431         }
1432 
1433 }
1434 
1435 static unsigned int meye_poll(struct file *file, poll_table *wait)
1436 {
1437         unsigned int res = v4l2_ctrl_poll(file, wait);
1438 
1439         mutex_lock(&meye.lock);
1440         poll_wait(file, &meye.proc_list, wait);
1441         if (kfifo_len(&meye.doneq))
1442                 res |= POLLIN | POLLRDNORM;
1443         mutex_unlock(&meye.lock);
1444         return res;
1445 }
1446 
1447 static void meye_vm_open(struct vm_area_struct *vma)
1448 {
1449         long idx = (long)vma->vm_private_data;
1450         meye.vma_use_count[idx]++;
1451 }
1452 
1453 static void meye_vm_close(struct vm_area_struct *vma)
1454 {
1455         long idx = (long)vma->vm_private_data;
1456         meye.vma_use_count[idx]--;
1457 }
1458 
1459 static const struct vm_operations_struct meye_vm_ops = {
1460         .open           = meye_vm_open,
1461         .close          = meye_vm_close,
1462 };
1463 
1464 static int meye_mmap(struct file *file, struct vm_area_struct *vma)
1465 {
1466         unsigned long start = vma->vm_start;
1467         unsigned long size = vma->vm_end - vma->vm_start;
1468         unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
1469         unsigned long page, pos;
1470 
1471         mutex_lock(&meye.lock);
1472         if (size > gbuffers * gbufsize) {
1473                 mutex_unlock(&meye.lock);
1474                 return -EINVAL;
1475         }
1476         if (!meye.grab_fbuffer) {
1477                 int i;
1478 
1479                 /* lazy allocation */
1480                 meye.grab_fbuffer = rvmalloc(gbuffers*gbufsize);
1481                 if (!meye.grab_fbuffer) {
1482                         printk(KERN_ERR "meye: v4l framebuffer allocation failed\n");
1483                         mutex_unlock(&meye.lock);
1484                         return -ENOMEM;
1485                 }
1486                 for (i = 0; i < gbuffers; i++)
1487                         meye.vma_use_count[i] = 0;
1488         }
1489         pos = (unsigned long)meye.grab_fbuffer + offset;
1490 
1491         while (size > 0) {
1492                 page = vmalloc_to_pfn((void *)pos);
1493                 if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) {
1494                         mutex_unlock(&meye.lock);
1495                         return -EAGAIN;
1496                 }
1497                 start += PAGE_SIZE;
1498                 pos += PAGE_SIZE;
1499                 if (size > PAGE_SIZE)
1500                         size -= PAGE_SIZE;
1501                 else
1502                         size = 0;
1503         }
1504 
1505         vma->vm_ops = &meye_vm_ops;
1506         vma->vm_flags &= ~VM_IO;        /* not I/O memory */
1507         vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
1508         vma->vm_private_data = (void *) (offset / gbufsize);
1509         meye_vm_open(vma);
1510 
1511         mutex_unlock(&meye.lock);
1512         return 0;
1513 }
1514 
1515 static const struct v4l2_file_operations meye_fops = {
1516         .owner          = THIS_MODULE,
1517         .open           = meye_open,
1518         .release        = meye_release,
1519         .mmap           = meye_mmap,
1520         .unlocked_ioctl = video_ioctl2,
1521         .poll           = meye_poll,
1522 };
1523 
1524 static const struct v4l2_ioctl_ops meye_ioctl_ops = {
1525         .vidioc_querycap        = vidioc_querycap,
1526         .vidioc_enum_input      = vidioc_enum_input,
1527         .vidioc_g_input         = vidioc_g_input,
1528         .vidioc_s_input         = vidioc_s_input,
1529         .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1530         .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1531         .vidioc_g_fmt_vid_cap   = vidioc_g_fmt_vid_cap,
1532         .vidioc_s_fmt_vid_cap   = vidioc_s_fmt_vid_cap,
1533         .vidioc_reqbufs         = vidioc_reqbufs,
1534         .vidioc_querybuf        = vidioc_querybuf,
1535         .vidioc_qbuf            = vidioc_qbuf,
1536         .vidioc_dqbuf           = vidioc_dqbuf,
1537         .vidioc_streamon        = vidioc_streamon,
1538         .vidioc_streamoff       = vidioc_streamoff,
1539         .vidioc_log_status      = v4l2_ctrl_log_status,
1540         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1541         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1542         .vidioc_default         = vidioc_default,
1543 };
1544 
1545 static struct video_device meye_template = {
1546         .name           = "meye",
1547         .fops           = &meye_fops,
1548         .ioctl_ops      = &meye_ioctl_ops,
1549         .release        = video_device_release_empty,
1550 };
1551 
1552 static const struct v4l2_ctrl_ops meye_ctrl_ops = {
1553         .s_ctrl = meye_s_ctrl,
1554 };
1555 
1556 #ifdef CONFIG_PM
1557 static int meye_suspend(struct pci_dev *pdev, pm_message_t state)
1558 {
1559         pci_save_state(pdev);
1560         meye.pm_mchip_mode = meye.mchip_mode;
1561         mchip_hic_stop();
1562         mchip_set(MCHIP_MM_INTA, 0x0);
1563         return 0;
1564 }
1565 
1566 static int meye_resume(struct pci_dev *pdev)
1567 {
1568         pci_restore_state(pdev);
1569         pci_write_config_word(meye.mchip_dev, MCHIP_PCI_SOFTRESET_SET, 1);
1570 
1571         mchip_delay(MCHIP_HIC_CMD, 0);
1572         mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE);
1573         msleep(1);
1574         mchip_set(MCHIP_VRJ_SOFT_RESET, 1);
1575         msleep(1);
1576         mchip_set(MCHIP_MM_PCI_MODE, 5);
1577         msleep(1);
1578         mchip_set(MCHIP_MM_INTA, MCHIP_MM_INTA_HIC_1_MASK);
1579 
1580         switch (meye.pm_mchip_mode) {
1581         case MCHIP_HIC_MODE_CONT_OUT:
1582                 mchip_continuous_start();
1583                 break;
1584         case MCHIP_HIC_MODE_CONT_COMP:
1585                 mchip_cont_compression_start();
1586                 break;
1587         }
1588         return 0;
1589 }
1590 #endif
1591 
1592 static int meye_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
1593 {
1594         static const struct v4l2_ctrl_config ctrl_agc = {
1595                 .id = V4L2_CID_MEYE_AGC,
1596                 .type = V4L2_CTRL_TYPE_INTEGER,
1597                 .ops = &meye_ctrl_ops,
1598                 .name = "AGC",
1599                 .max = 63,
1600                 .step = 1,
1601                 .def = 48,
1602                 .flags = V4L2_CTRL_FLAG_SLIDER,
1603         };
1604         static const struct v4l2_ctrl_config ctrl_picture = {
1605                 .id = V4L2_CID_MEYE_PICTURE,
1606                 .type = V4L2_CTRL_TYPE_INTEGER,
1607                 .ops = &meye_ctrl_ops,
1608                 .name = "Picture",
1609                 .max = 63,
1610                 .step = 1,
1611         };
1612         static const struct v4l2_ctrl_config ctrl_framerate = {
1613                 .id = V4L2_CID_MEYE_FRAMERATE,
1614                 .type = V4L2_CTRL_TYPE_INTEGER,
1615                 .ops = &meye_ctrl_ops,
1616                 .name = "Framerate",
1617                 .max = 31,
1618                 .step = 1,
1619         };
1620         struct v4l2_device *v4l2_dev = &meye.v4l2_dev;
1621         int ret = -EBUSY;
1622         unsigned long mchip_adr;
1623 
1624         if (meye.mchip_dev != NULL) {
1625                 printk(KERN_ERR "meye: only one device allowed!\n");
1626                 return ret;
1627         }
1628 
1629         ret = v4l2_device_register(&pcidev->dev, v4l2_dev);
1630         if (ret < 0) {
1631                 v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
1632                 return ret;
1633         }
1634         ret = -ENOMEM;
1635         meye.mchip_dev = pcidev;
1636 
1637         meye.grab_temp = vmalloc(MCHIP_NB_PAGES_MJPEG * PAGE_SIZE);
1638         if (!meye.grab_temp) {
1639                 v4l2_err(v4l2_dev, "grab buffer allocation failed\n");
1640                 goto outvmalloc;
1641         }
1642 
1643         spin_lock_init(&meye.grabq_lock);
1644         if (kfifo_alloc(&meye.grabq, sizeof(int) * MEYE_MAX_BUFNBRS,
1645                                 GFP_KERNEL)) {
1646                 v4l2_err(v4l2_dev, "fifo allocation failed\n");
1647                 goto outkfifoalloc1;
1648         }
1649         spin_lock_init(&meye.doneq_lock);
1650         if (kfifo_alloc(&meye.doneq, sizeof(int) * MEYE_MAX_BUFNBRS,
1651                                 GFP_KERNEL)) {
1652                 v4l2_err(v4l2_dev, "fifo allocation failed\n");
1653                 goto outkfifoalloc2;
1654         }
1655 
1656         meye.vdev = meye_template;
1657         meye.vdev.v4l2_dev = &meye.v4l2_dev;
1658 
1659         ret = -EIO;
1660         if ((ret = sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERA, 1))) {
1661                 v4l2_err(v4l2_dev, "meye: unable to power on the camera\n");
1662                 v4l2_err(v4l2_dev, "meye: did you enable the camera in "
1663                                 "sonypi using the module options ?\n");
1664                 goto outsonypienable;
1665         }
1666 
1667         if ((ret = pci_enable_device(meye.mchip_dev))) {
1668                 v4l2_err(v4l2_dev, "meye: pci_enable_device failed\n");
1669                 goto outenabledev;
1670         }
1671 
1672         mchip_adr = pci_resource_start(meye.mchip_dev,0);
1673         if (!mchip_adr) {
1674                 v4l2_err(v4l2_dev, "meye: mchip has no device base address\n");
1675                 goto outregions;
1676         }
1677         if (!request_mem_region(pci_resource_start(meye.mchip_dev, 0),
1678                                 pci_resource_len(meye.mchip_dev, 0),
1679                                 "meye")) {
1680                 v4l2_err(v4l2_dev, "meye: request_mem_region failed\n");
1681                 goto outregions;
1682         }
1683         meye.mchip_mmregs = ioremap(mchip_adr, MCHIP_MM_REGS);
1684         if (!meye.mchip_mmregs) {
1685                 v4l2_err(v4l2_dev, "meye: ioremap failed\n");
1686                 goto outremap;
1687         }
1688 
1689         meye.mchip_irq = pcidev->irq;
1690         if (request_irq(meye.mchip_irq, meye_irq,
1691                         IRQF_SHARED, "meye", meye_irq)) {
1692                 v4l2_err(v4l2_dev, "request_irq failed\n");
1693                 goto outreqirq;
1694         }
1695 
1696         pci_write_config_byte(meye.mchip_dev, PCI_CACHE_LINE_SIZE, 8);
1697         pci_write_config_byte(meye.mchip_dev, PCI_LATENCY_TIMER, 64);
1698 
1699         pci_set_master(meye.mchip_dev);
1700 
1701         /* Ask the camera to perform a soft reset. */
1702         pci_write_config_word(meye.mchip_dev, MCHIP_PCI_SOFTRESET_SET, 1);
1703 
1704         mchip_delay(MCHIP_HIC_CMD, 0);
1705         mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE);
1706 
1707         msleep(1);
1708         mchip_set(MCHIP_VRJ_SOFT_RESET, 1);
1709 
1710         msleep(1);
1711         mchip_set(MCHIP_MM_PCI_MODE, 5);
1712 
1713         msleep(1);
1714         mchip_set(MCHIP_MM_INTA, MCHIP_MM_INTA_HIC_1_MASK);
1715 
1716         mutex_init(&meye.lock);
1717         init_waitqueue_head(&meye.proc_list);
1718 
1719         v4l2_ctrl_handler_init(&meye.hdl, 3);
1720         v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops,
1721                           V4L2_CID_BRIGHTNESS, 0, 63, 1, 32);
1722         v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops,
1723                           V4L2_CID_HUE, 0, 63, 1, 32);
1724         v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops,
1725                           V4L2_CID_CONTRAST, 0, 63, 1, 32);
1726         v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops,
1727                           V4L2_CID_SATURATION, 0, 63, 1, 32);
1728         v4l2_ctrl_new_custom(&meye.hdl, &ctrl_agc, NULL);
1729         v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops,
1730                           V4L2_CID_SHARPNESS, 0, 63, 1, 32);
1731         v4l2_ctrl_new_custom(&meye.hdl, &ctrl_picture, NULL);
1732         v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops,
1733                           V4L2_CID_JPEG_COMPRESSION_QUALITY, 0, 10, 1, 8);
1734         v4l2_ctrl_new_custom(&meye.hdl, &ctrl_framerate, NULL);
1735         if (meye.hdl.error) {
1736                 v4l2_err(v4l2_dev, "couldn't register controls\n");
1737                 goto outvideoreg;
1738         }
1739 
1740         v4l2_ctrl_handler_setup(&meye.hdl);
1741         meye.vdev.ctrl_handler = &meye.hdl;
1742 
1743         if (video_register_device(&meye.vdev, VFL_TYPE_GRABBER,
1744                                   video_nr) < 0) {
1745                 v4l2_err(v4l2_dev, "video_register_device failed\n");
1746                 goto outvideoreg;
1747         }
1748 
1749         v4l2_info(v4l2_dev, "Motion Eye Camera Driver v%s.\n",
1750                MEYE_DRIVER_VERSION);
1751         v4l2_info(v4l2_dev, "mchip KL5A72002 rev. %d, base %lx, irq %d\n",
1752                meye.mchip_dev->revision, mchip_adr, meye.mchip_irq);
1753 
1754         return 0;
1755 
1756 outvideoreg:
1757         v4l2_ctrl_handler_free(&meye.hdl);
1758         free_irq(meye.mchip_irq, meye_irq);
1759 outreqirq:
1760         iounmap(meye.mchip_mmregs);
1761 outremap:
1762         release_mem_region(pci_resource_start(meye.mchip_dev, 0),
1763                            pci_resource_len(meye.mchip_dev, 0));
1764 outregions:
1765         pci_disable_device(meye.mchip_dev);
1766 outenabledev:
1767         sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERA, 0);
1768 outsonypienable:
1769         kfifo_free(&meye.doneq);
1770 outkfifoalloc2:
1771         kfifo_free(&meye.grabq);
1772 outkfifoalloc1:
1773         vfree(meye.grab_temp);
1774 outvmalloc:
1775         return ret;
1776 }
1777 
1778 static void meye_remove(struct pci_dev *pcidev)
1779 {
1780         video_unregister_device(&meye.vdev);
1781 
1782         mchip_hic_stop();
1783 
1784         mchip_dma_free();
1785 
1786         /* disable interrupts */
1787         mchip_set(MCHIP_MM_INTA, 0x0);
1788 
1789         free_irq(meye.mchip_irq, meye_irq);
1790 
1791         iounmap(meye.mchip_mmregs);
1792 
1793         release_mem_region(pci_resource_start(meye.mchip_dev, 0),
1794                            pci_resource_len(meye.mchip_dev, 0));
1795 
1796         pci_disable_device(meye.mchip_dev);
1797 
1798         sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERA, 0);
1799 
1800         kfifo_free(&meye.doneq);
1801         kfifo_free(&meye.grabq);
1802 
1803         vfree(meye.grab_temp);
1804 
1805         if (meye.grab_fbuffer) {
1806                 rvfree(meye.grab_fbuffer, gbuffers*gbufsize);
1807                 meye.grab_fbuffer = NULL;
1808         }
1809 
1810         printk(KERN_INFO "meye: removed\n");
1811 }
1812 
1813 static struct pci_device_id meye_pci_tbl[] = {
1814         { PCI_VDEVICE(KAWASAKI, PCI_DEVICE_ID_MCHIP_KL5A72002), 0 },
1815         { }
1816 };
1817 
1818 MODULE_DEVICE_TABLE(pci, meye_pci_tbl);
1819 
1820 static struct pci_driver meye_driver = {
1821         .name           = "meye",
1822         .id_table       = meye_pci_tbl,
1823         .probe          = meye_probe,
1824         .remove         = meye_remove,
1825 #ifdef CONFIG_PM
1826         .suspend        = meye_suspend,
1827         .resume         = meye_resume,
1828 #endif
1829 };
1830 
1831 static int __init meye_init(void)
1832 {
1833         gbuffers = max(2, min((int)gbuffers, MEYE_MAX_BUFNBRS));
1834         if (gbufsize > MEYE_MAX_BUFSIZE)
1835                 gbufsize = MEYE_MAX_BUFSIZE;
1836         gbufsize = PAGE_ALIGN(gbufsize);
1837         printk(KERN_INFO "meye: using %d buffers with %dk (%dk total) "
1838                          "for capture\n",
1839                          gbuffers,
1840                          gbufsize / 1024, gbuffers * gbufsize / 1024);
1841         return pci_register_driver(&meye_driver);
1842 }
1843 
1844 static void __exit meye_exit(void)
1845 {
1846         pci_unregister_driver(&meye_driver);
1847 }
1848 
1849 module_init(meye_init);
1850 module_exit(meye_exit);
1851 

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