1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Motion Eye video4linux driver for Sony Vaio PictureBook
4 *
5 * Copyright (C) 2001-2004 Stelian Pop <stelian@popies.net>
6 *
7 * Copyright (C) 2001-2002 Alcôve <www.alcove.com>
8 *
9 * Copyright (C) 2000 Andrew Tridgell <tridge@valinux.com>
10 *
11 * Earlier work by Werner Almesberger, Paul `Rusty' Russell and Paul Mackerras.
12 *
13 * Some parts borrowed from various video4linux drivers, especially
14 * bttv-driver.c and zoran.c, see original files for credits.
15 */
16 #include <linux/module.h>
17 #include <linux/pci.h>
18 #include <linux/sched.h>
19 #include <linux/init.h>
20 #include <linux/gfp.h>
21 #include <linux/videodev2.h>
22 #include <media/v4l2-common.h>
23 #include <media/v4l2-device.h>
24 #include <media/v4l2-ioctl.h>
25 #include <media/v4l2-fh.h>
26 #include <media/v4l2-event.h>
27 #include <linux/uaccess.h>
28 #include <asm/io.h>
29 #include <linux/delay.h>
30 #include <linux/interrupt.h>
31 #include <linux/vmalloc.h>
32 #include <linux/dma-mapping.h>
33
34 #include "meye.h"
35 #include <linux/meye.h>
36
37 MODULE_AUTHOR("Stelian Pop <stelian@popies.net>");
38 MODULE_DESCRIPTION("v4l2 driver for the MotionEye camera");
39 MODULE_LICENSE("GPL");
40 MODULE_VERSION(MEYE_DRIVER_VERSION);
41
42 /* number of grab buffers */
43 static unsigned int gbuffers = 2;
44 module_param(gbuffers, int, 0444);
45 MODULE_PARM_DESC(gbuffers, "number of capture buffers, default is 2 (32 max)");
46
47 /* size of a grab buffer */
48 static unsigned int gbufsize = MEYE_MAX_BUFSIZE;
49 module_param(gbufsize, int, 0444);
50 MODULE_PARM_DESC(gbufsize, "size of the capture buffers, default is 614400 (will be rounded up to a page multiple)");
51
52 /* /dev/videoX registration number */
53 static int video_nr = -1;
54 module_param(video_nr, int, 0444);
55 MODULE_PARM_DESC(video_nr, "video device to register (0=/dev/video0, etc)");
56
57 /* driver structure - only one possible */
58 static struct meye meye;
59
60 /****************************************************************************/
61 /* Memory allocation routines (stolen from bttv-driver.c) */
62 /****************************************************************************/
rvmalloc(unsigned long size)63 static void *rvmalloc(unsigned long size)
64 {
65 void *mem;
66 unsigned long adr;
67
68 size = PAGE_ALIGN(size);
69 mem = vmalloc_32(size);
70 if (mem) {
71 memset(mem, 0, size);
72 adr = (unsigned long) mem;
73 while (size > 0) {
74 SetPageReserved(vmalloc_to_page((void *)adr));
75 adr += PAGE_SIZE;
76 size -= PAGE_SIZE;
77 }
78 }
79 return mem;
80 }
81
rvfree(void * mem,unsigned long size)82 static void rvfree(void * mem, unsigned long size)
83 {
84 unsigned long adr;
85
86 if (mem) {
87 adr = (unsigned long) mem;
88 while ((long) size > 0) {
89 ClearPageReserved(vmalloc_to_page((void *)adr));
90 adr += PAGE_SIZE;
91 size -= PAGE_SIZE;
92 }
93 vfree(mem);
94 }
95 }
96
97 /*
98 * return a page table pointing to N pages of locked memory
99 *
100 * NOTE: The meye device expects DMA addresses on 32 bits, we build
101 * a table of 1024 entries = 4 bytes * 1024 = 4096 bytes.
102 */
ptable_alloc(void)103 static int ptable_alloc(void)
104 {
105 u32 *pt;
106 int i;
107
108 memset(meye.mchip_ptable, 0, sizeof(meye.mchip_ptable));
109
110 /* give only 32 bit DMA addresses */
111 if (dma_set_mask(&meye.mchip_dev->dev, DMA_BIT_MASK(32)))
112 return -1;
113
114 meye.mchip_ptable_toc = dma_alloc_coherent(&meye.mchip_dev->dev,
115 PAGE_SIZE,
116 &meye.mchip_dmahandle,
117 GFP_KERNEL);
118 if (!meye.mchip_ptable_toc) {
119 meye.mchip_dmahandle = 0;
120 return -1;
121 }
122
123 pt = meye.mchip_ptable_toc;
124 for (i = 0; i < MCHIP_NB_PAGES; i++) {
125 dma_addr_t dma;
126 meye.mchip_ptable[i] = dma_alloc_coherent(&meye.mchip_dev->dev,
127 PAGE_SIZE,
128 &dma,
129 GFP_KERNEL);
130 if (!meye.mchip_ptable[i]) {
131 int j;
132 pt = meye.mchip_ptable_toc;
133 for (j = 0; j < i; ++j) {
134 dma = (dma_addr_t) *pt;
135 dma_free_coherent(&meye.mchip_dev->dev,
136 PAGE_SIZE,
137 meye.mchip_ptable[j], dma);
138 pt++;
139 }
140 dma_free_coherent(&meye.mchip_dev->dev,
141 PAGE_SIZE,
142 meye.mchip_ptable_toc,
143 meye.mchip_dmahandle);
144 meye.mchip_ptable_toc = NULL;
145 meye.mchip_dmahandle = 0;
146 return -1;
147 }
148 *pt = (u32) dma;
149 pt++;
150 }
151 return 0;
152 }
153
ptable_free(void)154 static void ptable_free(void)
155 {
156 u32 *pt;
157 int i;
158
159 pt = meye.mchip_ptable_toc;
160 for (i = 0; i < MCHIP_NB_PAGES; i++) {
161 dma_addr_t dma = (dma_addr_t) *pt;
162 if (meye.mchip_ptable[i])
163 dma_free_coherent(&meye.mchip_dev->dev,
164 PAGE_SIZE,
165 meye.mchip_ptable[i], dma);
166 pt++;
167 }
168
169 if (meye.mchip_ptable_toc)
170 dma_free_coherent(&meye.mchip_dev->dev,
171 PAGE_SIZE,
172 meye.mchip_ptable_toc,
173 meye.mchip_dmahandle);
174
175 memset(meye.mchip_ptable, 0, sizeof(meye.mchip_ptable));
176 meye.mchip_ptable_toc = NULL;
177 meye.mchip_dmahandle = 0;
178 }
179
180 /* copy data from ptable into buf */
ptable_copy(u8 * buf,int start,int size,int pt_pages)181 static void ptable_copy(u8 *buf, int start, int size, int pt_pages)
182 {
183 int i;
184
185 for (i = 0; i < (size / PAGE_SIZE) * PAGE_SIZE; i += PAGE_SIZE) {
186 memcpy(buf + i, meye.mchip_ptable[start++], PAGE_SIZE);
187 if (start >= pt_pages)
188 start = 0;
189 }
190 memcpy(buf + i, meye.mchip_ptable[start], size % PAGE_SIZE);
191 }
192
193 /****************************************************************************/
194 /* JPEG tables at different qualities to load into the VRJ chip */
195 /****************************************************************************/
196
197 /* return a set of quantisation tables based on a quality from 1 to 10 */
jpeg_quantisation_tables(int * length,int quality)198 static u16 *jpeg_quantisation_tables(int *length, int quality)
199 {
200 static u16 jpeg_tables[][70] = { {
201 0xdbff, 0x4300, 0xff00, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
202 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
203 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
204 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
205 0xffff, 0xffff, 0xffff,
206 0xdbff, 0x4300, 0xff01, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
207 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
208 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
209 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
210 0xffff, 0xffff, 0xffff,
211 },
212 {
213 0xdbff, 0x4300, 0x5000, 0x3c37, 0x3c46, 0x5032, 0x4146, 0x5a46,
214 0x5055, 0x785f, 0x82c8, 0x6e78, 0x786e, 0xaff5, 0x91b9, 0xffc8,
215 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
216 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
217 0xffff, 0xffff, 0xffff,
218 0xdbff, 0x4300, 0x5501, 0x5a5a, 0x6978, 0xeb78, 0x8282, 0xffeb,
219 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
220 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
221 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
222 0xffff, 0xffff, 0xffff,
223 },
224 {
225 0xdbff, 0x4300, 0x2800, 0x1e1c, 0x1e23, 0x2819, 0x2123, 0x2d23,
226 0x282b, 0x3c30, 0x4164, 0x373c, 0x3c37, 0x587b, 0x495d, 0x9164,
227 0x9980, 0x8f96, 0x8c80, 0xa08a, 0xe6b4, 0xa0c3, 0xdaaa, 0x8aad,
228 0xc88c, 0xcbff, 0xeeda, 0xfff5, 0xffff, 0xc19b, 0xffff, 0xfaff,
229 0xe6ff, 0xfffd, 0xfff8,
230 0xdbff, 0x4300, 0x2b01, 0x2d2d, 0x353c, 0x763c, 0x4141, 0xf876,
231 0x8ca5, 0xf8a5, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8,
232 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8,
233 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8,
234 0xf8f8, 0xf8f8, 0xfff8,
235 },
236 {
237 0xdbff, 0x4300, 0x1b00, 0x1412, 0x1417, 0x1b11, 0x1617, 0x1e17,
238 0x1b1c, 0x2820, 0x2b42, 0x2528, 0x2825, 0x3a51, 0x303d, 0x6042,
239 0x6555, 0x5f64, 0x5d55, 0x6a5b, 0x9978, 0x6a81, 0x9071, 0x5b73,
240 0x855d, 0x86b5, 0x9e90, 0xaba3, 0xabad, 0x8067, 0xc9bc, 0xa6ba,
241 0x99c7, 0xaba8, 0xffa4,
242 0xdbff, 0x4300, 0x1c01, 0x1e1e, 0x2328, 0x4e28, 0x2b2b, 0xa44e,
243 0x5d6e, 0xa46e, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4,
244 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4,
245 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4,
246 0xa4a4, 0xa4a4, 0xffa4,
247 },
248 {
249 0xdbff, 0x4300, 0x1400, 0x0f0e, 0x0f12, 0x140d, 0x1012, 0x1712,
250 0x1415, 0x1e18, 0x2132, 0x1c1e, 0x1e1c, 0x2c3d, 0x242e, 0x4932,
251 0x4c40, 0x474b, 0x4640, 0x5045, 0x735a, 0x5062, 0x6d55, 0x4556,
252 0x6446, 0x6588, 0x776d, 0x817b, 0x8182, 0x604e, 0x978d, 0x7d8c,
253 0x7396, 0x817e, 0xff7c,
254 0xdbff, 0x4300, 0x1501, 0x1717, 0x1a1e, 0x3b1e, 0x2121, 0x7c3b,
255 0x4653, 0x7c53, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c,
256 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c,
257 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c,
258 0x7c7c, 0x7c7c, 0xff7c,
259 },
260 {
261 0xdbff, 0x4300, 0x1000, 0x0c0b, 0x0c0e, 0x100a, 0x0d0e, 0x120e,
262 0x1011, 0x1813, 0x1a28, 0x1618, 0x1816, 0x2331, 0x1d25, 0x3a28,
263 0x3d33, 0x393c, 0x3833, 0x4037, 0x5c48, 0x404e, 0x5744, 0x3745,
264 0x5038, 0x516d, 0x5f57, 0x6762, 0x6768, 0x4d3e, 0x7971, 0x6470,
265 0x5c78, 0x6765, 0xff63,
266 0xdbff, 0x4300, 0x1101, 0x1212, 0x1518, 0x2f18, 0x1a1a, 0x632f,
267 0x3842, 0x6342, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363,
268 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363,
269 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363,
270 0x6363, 0x6363, 0xff63,
271 },
272 {
273 0xdbff, 0x4300, 0x0d00, 0x0a09, 0x0a0b, 0x0d08, 0x0a0b, 0x0e0b,
274 0x0d0e, 0x130f, 0x1520, 0x1213, 0x1312, 0x1c27, 0x171e, 0x2e20,
275 0x3129, 0x2e30, 0x2d29, 0x332c, 0x4a3a, 0x333e, 0x4636, 0x2c37,
276 0x402d, 0x4157, 0x4c46, 0x524e, 0x5253, 0x3e32, 0x615a, 0x505a,
277 0x4a60, 0x5251, 0xff4f,
278 0xdbff, 0x4300, 0x0e01, 0x0e0e, 0x1113, 0x2613, 0x1515, 0x4f26,
279 0x2d35, 0x4f35, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f,
280 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f,
281 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f,
282 0x4f4f, 0x4f4f, 0xff4f,
283 },
284 {
285 0xdbff, 0x4300, 0x0a00, 0x0707, 0x0708, 0x0a06, 0x0808, 0x0b08,
286 0x0a0a, 0x0e0b, 0x1018, 0x0d0e, 0x0e0d, 0x151d, 0x1116, 0x2318,
287 0x251f, 0x2224, 0x221f, 0x2621, 0x372b, 0x262f, 0x3429, 0x2129,
288 0x3022, 0x3141, 0x3934, 0x3e3b, 0x3e3e, 0x2e25, 0x4944, 0x3c43,
289 0x3748, 0x3e3d, 0xff3b,
290 0xdbff, 0x4300, 0x0a01, 0x0b0b, 0x0d0e, 0x1c0e, 0x1010, 0x3b1c,
291 0x2228, 0x3b28, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b,
292 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b,
293 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b,
294 0x3b3b, 0x3b3b, 0xff3b,
295 },
296 {
297 0xdbff, 0x4300, 0x0600, 0x0504, 0x0506, 0x0604, 0x0506, 0x0706,
298 0x0607, 0x0a08, 0x0a10, 0x090a, 0x0a09, 0x0e14, 0x0c0f, 0x1710,
299 0x1814, 0x1718, 0x1614, 0x1a16, 0x251d, 0x1a1f, 0x231b, 0x161c,
300 0x2016, 0x202c, 0x2623, 0x2927, 0x292a, 0x1f19, 0x302d, 0x282d,
301 0x2530, 0x2928, 0xff28,
302 0xdbff, 0x4300, 0x0701, 0x0707, 0x080a, 0x130a, 0x0a0a, 0x2813,
303 0x161a, 0x281a, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828,
304 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828,
305 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828,
306 0x2828, 0x2828, 0xff28,
307 },
308 {
309 0xdbff, 0x4300, 0x0300, 0x0202, 0x0203, 0x0302, 0x0303, 0x0403,
310 0x0303, 0x0504, 0x0508, 0x0405, 0x0504, 0x070a, 0x0607, 0x0c08,
311 0x0c0a, 0x0b0c, 0x0b0a, 0x0d0b, 0x120e, 0x0d10, 0x110e, 0x0b0e,
312 0x100b, 0x1016, 0x1311, 0x1514, 0x1515, 0x0f0c, 0x1817, 0x1416,
313 0x1218, 0x1514, 0xff14,
314 0xdbff, 0x4300, 0x0301, 0x0404, 0x0405, 0x0905, 0x0505, 0x1409,
315 0x0b0d, 0x140d, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414,
316 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414,
317 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414,
318 0x1414, 0x1414, 0xff14,
319 },
320 {
321 0xdbff, 0x4300, 0x0100, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
322 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
323 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
324 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
325 0x0101, 0x0101, 0xff01,
326 0xdbff, 0x4300, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
327 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
328 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
329 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
330 0x0101, 0x0101, 0xff01,
331 } };
332
333 if (quality < 0 || quality > 10) {
334 printk(KERN_WARNING
335 "meye: invalid quality level %d - using 8\n", quality);
336 quality = 8;
337 }
338
339 *length = ARRAY_SIZE(jpeg_tables[quality]);
340 return jpeg_tables[quality];
341 }
342
343 /* return a generic set of huffman tables */
jpeg_huffman_tables(int * length)344 static u16 *jpeg_huffman_tables(int *length)
345 {
346 static u16 tables[] = {
347 0xC4FF, 0xB500, 0x0010, 0x0102, 0x0303, 0x0402, 0x0503, 0x0405,
348 0x0004, 0x0100, 0x017D, 0x0302, 0x0400, 0x0511, 0x2112, 0x4131,
349 0x1306, 0x6151, 0x2207, 0x1471, 0x8132, 0xA191, 0x2308, 0xB142,
350 0x15C1, 0xD152, 0x24F0, 0x6233, 0x8272, 0x0A09, 0x1716, 0x1918,
351 0x251A, 0x2726, 0x2928, 0x342A, 0x3635, 0x3837, 0x3A39, 0x4443,
352 0x4645, 0x4847, 0x4A49, 0x5453, 0x5655, 0x5857, 0x5A59, 0x6463,
353 0x6665, 0x6867, 0x6A69, 0x7473, 0x7675, 0x7877, 0x7A79, 0x8483,
354 0x8685, 0x8887, 0x8A89, 0x9392, 0x9594, 0x9796, 0x9998, 0xA29A,
355 0xA4A3, 0xA6A5, 0xA8A7, 0xAAA9, 0xB3B2, 0xB5B4, 0xB7B6, 0xB9B8,
356 0xC2BA, 0xC4C3, 0xC6C5, 0xC8C7, 0xCAC9, 0xD3D2, 0xD5D4, 0xD7D6,
357 0xD9D8, 0xE1DA, 0xE3E2, 0xE5E4, 0xE7E6, 0xE9E8, 0xF1EA, 0xF3F2,
358 0xF5F4, 0xF7F6, 0xF9F8, 0xFFFA,
359 0xC4FF, 0xB500, 0x0011, 0x0102, 0x0402, 0x0304, 0x0704, 0x0405,
360 0x0004, 0x0201, 0x0077, 0x0201, 0x1103, 0x0504, 0x3121, 0x1206,
361 0x5141, 0x6107, 0x1371, 0x3222, 0x0881, 0x4214, 0xA191, 0xC1B1,
362 0x2309, 0x5233, 0x15F0, 0x7262, 0x0AD1, 0x2416, 0xE134, 0xF125,
363 0x1817, 0x1A19, 0x2726, 0x2928, 0x352A, 0x3736, 0x3938, 0x433A,
364 0x4544, 0x4746, 0x4948, 0x534A, 0x5554, 0x5756, 0x5958, 0x635A,
365 0x6564, 0x6766, 0x6968, 0x736A, 0x7574, 0x7776, 0x7978, 0x827A,
366 0x8483, 0x8685, 0x8887, 0x8A89, 0x9392, 0x9594, 0x9796, 0x9998,
367 0xA29A, 0xA4A3, 0xA6A5, 0xA8A7, 0xAAA9, 0xB3B2, 0xB5B4, 0xB7B6,
368 0xB9B8, 0xC2BA, 0xC4C3, 0xC6C5, 0xC8C7, 0xCAC9, 0xD3D2, 0xD5D4,
369 0xD7D6, 0xD9D8, 0xE2DA, 0xE4E3, 0xE6E5, 0xE8E7, 0xEAE9, 0xF3F2,
370 0xF5F4, 0xF7F6, 0xF9F8, 0xFFFA,
371 0xC4FF, 0x1F00, 0x0000, 0x0501, 0x0101, 0x0101, 0x0101, 0x0000,
372 0x0000, 0x0000, 0x0000, 0x0201, 0x0403, 0x0605, 0x0807, 0x0A09,
373 0xFF0B,
374 0xC4FF, 0x1F00, 0x0001, 0x0103, 0x0101, 0x0101, 0x0101, 0x0101,
375 0x0000, 0x0000, 0x0000, 0x0201, 0x0403, 0x0605, 0x0807, 0x0A09,
376 0xFF0B
377 };
378
379 *length = ARRAY_SIZE(tables);
380 return tables;
381 }
382
383 /****************************************************************************/
384 /* MCHIP low-level functions */
385 /****************************************************************************/
386
387 /* returns the horizontal capture size */
mchip_hsize(void)388 static inline int mchip_hsize(void)
389 {
390 return meye.params.subsample ? 320 : 640;
391 }
392
393 /* returns the vertical capture size */
mchip_vsize(void)394 static inline int mchip_vsize(void)
395 {
396 return meye.params.subsample ? 240 : 480;
397 }
398
399 /* waits for a register to be available */
mchip_sync(int reg)400 static void mchip_sync(int reg)
401 {
402 u32 status;
403 int i;
404
405 if (reg == MCHIP_MM_FIFO_DATA) {
406 for (i = 0; i < MCHIP_REG_TIMEOUT; i++) {
407 status = readl(meye.mchip_mmregs +
408 MCHIP_MM_FIFO_STATUS);
409 if (!(status & MCHIP_MM_FIFO_WAIT)) {
410 printk(KERN_WARNING "meye: fifo not ready\n");
411 return;
412 }
413 if (status & MCHIP_MM_FIFO_READY)
414 return;
415 udelay(1);
416 }
417 } else if (reg > 0x80) {
418 u32 mask = (reg < 0x100) ? MCHIP_HIC_STATUS_MCC_RDY
419 : MCHIP_HIC_STATUS_VRJ_RDY;
420 for (i = 0; i < MCHIP_REG_TIMEOUT; i++) {
421 status = readl(meye.mchip_mmregs + MCHIP_HIC_STATUS);
422 if (status & mask)
423 return;
424 udelay(1);
425 }
426 } else
427 return;
428 printk(KERN_WARNING
429 "meye: mchip_sync() timeout on reg 0x%x status=0x%x\n",
430 reg, status);
431 }
432
433 /* sets a value into the register */
mchip_set(int reg,u32 v)434 static inline void mchip_set(int reg, u32 v)
435 {
436 mchip_sync(reg);
437 writel(v, meye.mchip_mmregs + reg);
438 }
439
440 /* get the register value */
mchip_read(int reg)441 static inline u32 mchip_read(int reg)
442 {
443 mchip_sync(reg);
444 return readl(meye.mchip_mmregs + reg);
445 }
446
447 /* wait for a register to become a particular value */
mchip_delay(u32 reg,u32 v)448 static inline int mchip_delay(u32 reg, u32 v)
449 {
450 int n = 10;
451 while (--n && mchip_read(reg) != v)
452 udelay(1);
453 return n;
454 }
455
456 /* setup subsampling */
mchip_subsample(void)457 static void mchip_subsample(void)
458 {
459 mchip_set(MCHIP_MCC_R_SAMPLING, meye.params.subsample);
460 mchip_set(MCHIP_MCC_R_XRANGE, mchip_hsize());
461 mchip_set(MCHIP_MCC_R_YRANGE, mchip_vsize());
462 mchip_set(MCHIP_MCC_B_XRANGE, mchip_hsize());
463 mchip_set(MCHIP_MCC_B_YRANGE, mchip_vsize());
464 mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE);
465 }
466
467 /* set the framerate into the mchip */
mchip_set_framerate(void)468 static void mchip_set_framerate(void)
469 {
470 mchip_set(MCHIP_HIC_S_RATE, meye.params.framerate);
471 }
472
473 /* load some huffman and quantisation tables into the VRJ chip ready
474 for JPEG compression */
mchip_load_tables(void)475 static void mchip_load_tables(void)
476 {
477 int i;
478 int length;
479 u16 *tables;
480
481 tables = jpeg_huffman_tables(&length);
482 for (i = 0; i < length; i++)
483 writel(tables[i], meye.mchip_mmregs + MCHIP_VRJ_TABLE_DATA);
484
485 tables = jpeg_quantisation_tables(&length, meye.params.quality);
486 for (i = 0; i < length; i++)
487 writel(tables[i], meye.mchip_mmregs + MCHIP_VRJ_TABLE_DATA);
488 }
489
490 /* setup the VRJ parameters in the chip */
mchip_vrj_setup(u8 mode)491 static void mchip_vrj_setup(u8 mode)
492 {
493 mchip_set(MCHIP_VRJ_BUS_MODE, 5);
494 mchip_set(MCHIP_VRJ_SIGNAL_ACTIVE_LEVEL, 0x1f);
495 mchip_set(MCHIP_VRJ_PDAT_USE, 1);
496 mchip_set(MCHIP_VRJ_IRQ_FLAG, 0xa0);
497 mchip_set(MCHIP_VRJ_MODE_SPECIFY, mode);
498 mchip_set(MCHIP_VRJ_NUM_LINES, mchip_vsize());
499 mchip_set(MCHIP_VRJ_NUM_PIXELS, mchip_hsize());
500 mchip_set(MCHIP_VRJ_NUM_COMPONENTS, 0x1b);
501 mchip_set(MCHIP_VRJ_LIMIT_COMPRESSED_LO, 0xFFFF);
502 mchip_set(MCHIP_VRJ_LIMIT_COMPRESSED_HI, 0xFFFF);
503 mchip_set(MCHIP_VRJ_COMP_DATA_FORMAT, 0xC);
504 mchip_set(MCHIP_VRJ_RESTART_INTERVAL, 0);
505 mchip_set(MCHIP_VRJ_SOF1, 0x601);
506 mchip_set(MCHIP_VRJ_SOF2, 0x1502);
507 mchip_set(MCHIP_VRJ_SOF3, 0x1503);
508 mchip_set(MCHIP_VRJ_SOF4, 0x1596);
509 mchip_set(MCHIP_VRJ_SOS, 0x0ed0);
510
511 mchip_load_tables();
512 }
513
514 /* sets the DMA parameters into the chip */
mchip_dma_setup(dma_addr_t dma_addr)515 static void mchip_dma_setup(dma_addr_t dma_addr)
516 {
517 int i;
518
519 mchip_set(MCHIP_MM_PT_ADDR, (u32)dma_addr);
520 for (i = 0; i < 4; i++)
521 mchip_set(MCHIP_MM_FIR(i), 0);
522 meye.mchip_fnum = 0;
523 }
524
525 /* setup for DMA transfers - also zeros the framebuffer */
mchip_dma_alloc(void)526 static int mchip_dma_alloc(void)
527 {
528 if (!meye.mchip_dmahandle)
529 if (ptable_alloc())
530 return -1;
531 return 0;
532 }
533
534 /* frees the DMA buffer */
mchip_dma_free(void)535 static void mchip_dma_free(void)
536 {
537 if (meye.mchip_dmahandle) {
538 mchip_dma_setup(0);
539 ptable_free();
540 }
541 }
542
543 /* stop any existing HIC action and wait for any dma to complete then
544 reset the dma engine */
mchip_hic_stop(void)545 static void mchip_hic_stop(void)
546 {
547 int i, j;
548
549 meye.mchip_mode = MCHIP_HIC_MODE_NOOP;
550 if (!(mchip_read(MCHIP_HIC_STATUS) & MCHIP_HIC_STATUS_BUSY))
551 return;
552 for (i = 0; i < 20; ++i) {
553 mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_STOP);
554 mchip_delay(MCHIP_HIC_CMD, 0);
555 for (j = 0; j < 100; ++j) {
556 if (mchip_delay(MCHIP_HIC_STATUS,
557 MCHIP_HIC_STATUS_IDLE))
558 return;
559 msleep(1);
560 }
561 printk(KERN_ERR "meye: need to reset HIC!\n");
562
563 mchip_set(MCHIP_HIC_CTL, MCHIP_HIC_CTL_SOFT_RESET);
564 msleep(250);
565 }
566 printk(KERN_ERR "meye: resetting HIC hanged!\n");
567 }
568
569 /****************************************************************************/
570 /* MCHIP frame processing functions */
571 /****************************************************************************/
572
573 /* get the next ready frame from the dma engine */
mchip_get_frame(void)574 static u32 mchip_get_frame(void)
575 {
576 return mchip_read(MCHIP_MM_FIR(meye.mchip_fnum));
577 }
578
579 /* frees the current frame from the dma engine */
mchip_free_frame(void)580 static void mchip_free_frame(void)
581 {
582 mchip_set(MCHIP_MM_FIR(meye.mchip_fnum), 0);
583 meye.mchip_fnum++;
584 meye.mchip_fnum %= 4;
585 }
586
587 /* read one frame from the framebuffer assuming it was captured using
588 a uncompressed transfer */
mchip_cont_read_frame(u32 v,u8 * buf,int size)589 static void mchip_cont_read_frame(u32 v, u8 *buf, int size)
590 {
591 int pt_id;
592
593 pt_id = (v >> 17) & 0x3FF;
594
595 ptable_copy(buf, pt_id, size, MCHIP_NB_PAGES);
596 }
597
598 /* read a compressed frame from the framebuffer */
mchip_comp_read_frame(u32 v,u8 * buf,int size)599 static int mchip_comp_read_frame(u32 v, u8 *buf, int size)
600 {
601 int pt_start, pt_end, trailer;
602 int fsize;
603 int i;
604
605 pt_start = (v >> 19) & 0xFF;
606 pt_end = (v >> 11) & 0xFF;
607 trailer = (v >> 1) & 0x3FF;
608
609 if (pt_end < pt_start)
610 fsize = (MCHIP_NB_PAGES_MJPEG - pt_start) * PAGE_SIZE +
611 pt_end * PAGE_SIZE + trailer * 4;
612 else
613 fsize = (pt_end - pt_start) * PAGE_SIZE + trailer * 4;
614
615 if (fsize > size) {
616 printk(KERN_WARNING "meye: oversized compressed frame %d\n",
617 fsize);
618 return -1;
619 }
620
621 ptable_copy(buf, pt_start, fsize, MCHIP_NB_PAGES_MJPEG);
622
623 #ifdef MEYE_JPEG_CORRECTION
624
625 /* Some mchip generated jpeg frames are incorrect. In most
626 * (all ?) of those cases, the final EOI (0xff 0xd9) marker
627 * is not present at the end of the frame.
628 *
629 * Since adding the final marker is not enough to restore
630 * the jpeg integrity, we drop the frame.
631 */
632
633 for (i = fsize - 1; i > 0 && buf[i] == 0xff; i--) ;
634
635 if (i < 2 || buf[i - 1] != 0xff || buf[i] != 0xd9)
636 return -1;
637
638 #endif
639
640 return fsize;
641 }
642
643 /* take a picture into SDRAM */
mchip_take_picture(void)644 static void mchip_take_picture(void)
645 {
646 int i;
647
648 mchip_hic_stop();
649 mchip_subsample();
650 mchip_dma_setup(meye.mchip_dmahandle);
651
652 mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_CAP);
653 mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
654
655 mchip_delay(MCHIP_HIC_CMD, 0);
656
657 for (i = 0; i < 100; ++i) {
658 if (mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE))
659 break;
660 msleep(1);
661 }
662 }
663
664 /* dma a previously taken picture into a buffer */
mchip_get_picture(u8 * buf,int bufsize)665 static void mchip_get_picture(u8 *buf, int bufsize)
666 {
667 u32 v;
668 int i;
669
670 mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_OUT);
671 mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
672
673 mchip_delay(MCHIP_HIC_CMD, 0);
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 for (i = 0; i < 4; ++i) {
680 v = mchip_get_frame();
681 if (v & MCHIP_MM_FIR_RDY) {
682 mchip_cont_read_frame(v, buf, bufsize);
683 break;
684 }
685 mchip_free_frame();
686 }
687 }
688
689 /* start continuous dma capture */
mchip_continuous_start(void)690 static void mchip_continuous_start(void)
691 {
692 mchip_hic_stop();
693 mchip_subsample();
694 mchip_set_framerate();
695 mchip_dma_setup(meye.mchip_dmahandle);
696
697 meye.mchip_mode = MCHIP_HIC_MODE_CONT_OUT;
698
699 mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_CONT_OUT);
700 mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
701
702 mchip_delay(MCHIP_HIC_CMD, 0);
703 }
704
705 /* compress one frame into a buffer */
mchip_compress_frame(u8 * buf,int bufsize)706 static int mchip_compress_frame(u8 *buf, int bufsize)
707 {
708 u32 v;
709 int len = -1, i;
710
711 mchip_vrj_setup(0x3f);
712 udelay(50);
713
714 mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_COMP);
715 mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
716
717 mchip_delay(MCHIP_HIC_CMD, 0);
718 for (i = 0; i < 100; ++i) {
719 if (mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE))
720 break;
721 msleep(1);
722 }
723
724 for (i = 0; i < 4; ++i) {
725 v = mchip_get_frame();
726 if (v & MCHIP_MM_FIR_RDY) {
727 len = mchip_comp_read_frame(v, buf, bufsize);
728 break;
729 }
730 mchip_free_frame();
731 }
732 return len;
733 }
734
735 #if 0
736 /* uncompress one image into a buffer */
737 static int mchip_uncompress_frame(u8 *img, int imgsize, u8 *buf, int bufsize)
738 {
739 mchip_vrj_setup(0x3f);
740 udelay(50);
741
742 mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_DECOMP);
743 mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
744
745 mchip_delay(MCHIP_HIC_CMD, 0);
746
747 return mchip_comp_read_frame(buf, bufsize);
748 }
749 #endif
750
751 /* start continuous compressed capture */
mchip_cont_compression_start(void)752 static void mchip_cont_compression_start(void)
753 {
754 mchip_hic_stop();
755 mchip_vrj_setup(0x3f);
756 mchip_subsample();
757 mchip_set_framerate();
758 mchip_dma_setup(meye.mchip_dmahandle);
759
760 meye.mchip_mode = MCHIP_HIC_MODE_CONT_COMP;
761
762 mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_CONT_COMP);
763 mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
764
765 mchip_delay(MCHIP_HIC_CMD, 0);
766 }
767
768 /****************************************************************************/
769 /* Interrupt handling */
770 /****************************************************************************/
771
meye_irq(int irq,void * dev_id)772 static irqreturn_t meye_irq(int irq, void *dev_id)
773 {
774 u32 v;
775 int reqnr;
776 static int sequence;
777
778 v = mchip_read(MCHIP_MM_INTA);
779
780 if (meye.mchip_mode != MCHIP_HIC_MODE_CONT_OUT &&
781 meye.mchip_mode != MCHIP_HIC_MODE_CONT_COMP)
782 return IRQ_NONE;
783
784 again:
785 v = mchip_get_frame();
786 if (!(v & MCHIP_MM_FIR_RDY))
787 return IRQ_HANDLED;
788
789 if (meye.mchip_mode == MCHIP_HIC_MODE_CONT_OUT) {
790 if (kfifo_out_locked(&meye.grabq, (unsigned char *)&reqnr,
791 sizeof(int), &meye.grabq_lock) != sizeof(int)) {
792 mchip_free_frame();
793 return IRQ_HANDLED;
794 }
795 mchip_cont_read_frame(v, meye.grab_fbuffer + gbufsize * reqnr,
796 mchip_hsize() * mchip_vsize() * 2);
797 meye.grab_buffer[reqnr].size = mchip_hsize() * mchip_vsize() * 2;
798 meye.grab_buffer[reqnr].state = MEYE_BUF_DONE;
799 meye.grab_buffer[reqnr].ts = ktime_get_ns();
800 meye.grab_buffer[reqnr].sequence = sequence++;
801 kfifo_in_locked(&meye.doneq, (unsigned char *)&reqnr,
802 sizeof(int), &meye.doneq_lock);
803 wake_up_interruptible(&meye.proc_list);
804 } else {
805 int size;
806 size = mchip_comp_read_frame(v, meye.grab_temp, gbufsize);
807 if (size == -1) {
808 mchip_free_frame();
809 goto again;
810 }
811 if (kfifo_out_locked(&meye.grabq, (unsigned char *)&reqnr,
812 sizeof(int), &meye.grabq_lock) != sizeof(int)) {
813 mchip_free_frame();
814 goto again;
815 }
816 memcpy(meye.grab_fbuffer + gbufsize * reqnr, meye.grab_temp,
817 size);
818 meye.grab_buffer[reqnr].size = size;
819 meye.grab_buffer[reqnr].state = MEYE_BUF_DONE;
820 meye.grab_buffer[reqnr].ts = ktime_get_ns();
821 meye.grab_buffer[reqnr].sequence = sequence++;
822 kfifo_in_locked(&meye.doneq, (unsigned char *)&reqnr,
823 sizeof(int), &meye.doneq_lock);
824 wake_up_interruptible(&meye.proc_list);
825 }
826 mchip_free_frame();
827 goto again;
828 }
829
830 /****************************************************************************/
831 /* video4linux integration */
832 /****************************************************************************/
833
meye_open(struct file * file)834 static int meye_open(struct file *file)
835 {
836 int i;
837
838 if (test_and_set_bit(0, &meye.in_use))
839 return -EBUSY;
840
841 mchip_hic_stop();
842
843 if (mchip_dma_alloc()) {
844 printk(KERN_ERR "meye: mchip framebuffer allocation failed\n");
845 clear_bit(0, &meye.in_use);
846 return -ENOBUFS;
847 }
848
849 for (i = 0; i < MEYE_MAX_BUFNBRS; i++)
850 meye.grab_buffer[i].state = MEYE_BUF_UNUSED;
851 kfifo_reset(&meye.grabq);
852 kfifo_reset(&meye.doneq);
853 return v4l2_fh_open(file);
854 }
855
meye_release(struct file * file)856 static int meye_release(struct file *file)
857 {
858 mchip_hic_stop();
859 mchip_dma_free();
860 clear_bit(0, &meye.in_use);
861 return v4l2_fh_release(file);
862 }
863
meyeioc_g_params(struct meye_params * p)864 static int meyeioc_g_params(struct meye_params *p)
865 {
866 *p = meye.params;
867 return 0;
868 }
869
meyeioc_s_params(struct meye_params * jp)870 static int meyeioc_s_params(struct meye_params *jp)
871 {
872 if (jp->subsample > 1)
873 return -EINVAL;
874
875 if (jp->quality > 10)
876 return -EINVAL;
877
878 if (jp->sharpness > 63 || jp->agc > 63 || jp->picture > 63)
879 return -EINVAL;
880
881 if (jp->framerate > 31)
882 return -EINVAL;
883
884 mutex_lock(&meye.lock);
885
886 if (meye.params.subsample != jp->subsample ||
887 meye.params.quality != jp->quality)
888 mchip_hic_stop(); /* need restart */
889
890 meye.params = *jp;
891 sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERASHARPNESS,
892 meye.params.sharpness);
893 sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERAAGC,
894 meye.params.agc);
895 sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERAPICTURE,
896 meye.params.picture);
897 mutex_unlock(&meye.lock);
898
899 return 0;
900 }
901
meyeioc_qbuf_capt(int * nb)902 static int meyeioc_qbuf_capt(int *nb)
903 {
904 if (!meye.grab_fbuffer)
905 return -EINVAL;
906
907 if (*nb >= gbuffers)
908 return -EINVAL;
909
910 if (*nb < 0) {
911 /* stop capture */
912 mchip_hic_stop();
913 return 0;
914 }
915
916 if (meye.grab_buffer[*nb].state != MEYE_BUF_UNUSED)
917 return -EBUSY;
918
919 mutex_lock(&meye.lock);
920
921 if (meye.mchip_mode != MCHIP_HIC_MODE_CONT_COMP)
922 mchip_cont_compression_start();
923
924 meye.grab_buffer[*nb].state = MEYE_BUF_USING;
925 kfifo_in_locked(&meye.grabq, (unsigned char *)nb, sizeof(int),
926 &meye.grabq_lock);
927 mutex_unlock(&meye.lock);
928
929 return 0;
930 }
931
meyeioc_sync(struct file * file,void * fh,int * i)932 static int meyeioc_sync(struct file *file, void *fh, int *i)
933 {
934 int unused;
935
936 if (*i < 0 || *i >= gbuffers)
937 return -EINVAL;
938
939 mutex_lock(&meye.lock);
940 switch (meye.grab_buffer[*i].state) {
941
942 case MEYE_BUF_UNUSED:
943 mutex_unlock(&meye.lock);
944 return -EINVAL;
945 case MEYE_BUF_USING:
946 if (file->f_flags & O_NONBLOCK) {
947 mutex_unlock(&meye.lock);
948 return -EAGAIN;
949 }
950 if (wait_event_interruptible(meye.proc_list,
951 (meye.grab_buffer[*i].state != MEYE_BUF_USING))) {
952 mutex_unlock(&meye.lock);
953 return -EINTR;
954 }
955 fallthrough;
956 case MEYE_BUF_DONE:
957 meye.grab_buffer[*i].state = MEYE_BUF_UNUSED;
958 if (kfifo_out_locked(&meye.doneq, (unsigned char *)&unused,
959 sizeof(int), &meye.doneq_lock) != sizeof(int))
960 break;
961 }
962 *i = meye.grab_buffer[*i].size;
963 mutex_unlock(&meye.lock);
964 return 0;
965 }
966
meyeioc_stillcapt(void)967 static int meyeioc_stillcapt(void)
968 {
969 if (!meye.grab_fbuffer)
970 return -EINVAL;
971
972 if (meye.grab_buffer[0].state != MEYE_BUF_UNUSED)
973 return -EBUSY;
974
975 mutex_lock(&meye.lock);
976 meye.grab_buffer[0].state = MEYE_BUF_USING;
977 mchip_take_picture();
978
979 mchip_get_picture(meye.grab_fbuffer,
980 mchip_hsize() * mchip_vsize() * 2);
981
982 meye.grab_buffer[0].state = MEYE_BUF_DONE;
983 mutex_unlock(&meye.lock);
984
985 return 0;
986 }
987
meyeioc_stilljcapt(int * len)988 static int meyeioc_stilljcapt(int *len)
989 {
990 if (!meye.grab_fbuffer)
991 return -EINVAL;
992
993 if (meye.grab_buffer[0].state != MEYE_BUF_UNUSED)
994 return -EBUSY;
995
996 mutex_lock(&meye.lock);
997 meye.grab_buffer[0].state = MEYE_BUF_USING;
998 *len = -1;
999
1000 while (*len == -1) {
1001 mchip_take_picture();
1002 *len = mchip_compress_frame(meye.grab_fbuffer, gbufsize);
1003 }
1004
1005 meye.grab_buffer[0].state = MEYE_BUF_DONE;
1006 mutex_unlock(&meye.lock);
1007 return 0;
1008 }
1009
vidioc_querycap(struct file * file,void * fh,struct v4l2_capability * cap)1010 static int vidioc_querycap(struct file *file, void *fh,
1011 struct v4l2_capability *cap)
1012 {
1013 strscpy(cap->driver, "meye", sizeof(cap->driver));
1014 strscpy(cap->card, "meye", sizeof(cap->card));
1015 sprintf(cap->bus_info, "PCI:%s", pci_name(meye.mchip_dev));
1016 return 0;
1017 }
1018
vidioc_enum_input(struct file * file,void * fh,struct v4l2_input * i)1019 static int vidioc_enum_input(struct file *file, void *fh, struct v4l2_input *i)
1020 {
1021 if (i->index != 0)
1022 return -EINVAL;
1023
1024 strscpy(i->name, "Camera", sizeof(i->name));
1025 i->type = V4L2_INPUT_TYPE_CAMERA;
1026
1027 return 0;
1028 }
1029
vidioc_g_input(struct file * file,void * fh,unsigned int * i)1030 static int vidioc_g_input(struct file *file, void *fh, unsigned int *i)
1031 {
1032 *i = 0;
1033 return 0;
1034 }
1035
vidioc_s_input(struct file * file,void * fh,unsigned int i)1036 static int vidioc_s_input(struct file *file, void *fh, unsigned int i)
1037 {
1038 if (i != 0)
1039 return -EINVAL;
1040
1041 return 0;
1042 }
1043
meye_s_ctrl(struct v4l2_ctrl * ctrl)1044 static int meye_s_ctrl(struct v4l2_ctrl *ctrl)
1045 {
1046 mutex_lock(&meye.lock);
1047 switch (ctrl->id) {
1048 case V4L2_CID_BRIGHTNESS:
1049 sony_pic_camera_command(
1050 SONY_PIC_COMMAND_SETCAMERABRIGHTNESS, ctrl->val);
1051 meye.brightness = ctrl->val << 10;
1052 break;
1053 case V4L2_CID_HUE:
1054 sony_pic_camera_command(
1055 SONY_PIC_COMMAND_SETCAMERAHUE, ctrl->val);
1056 meye.hue = ctrl->val << 10;
1057 break;
1058 case V4L2_CID_CONTRAST:
1059 sony_pic_camera_command(
1060 SONY_PIC_COMMAND_SETCAMERACONTRAST, ctrl->val);
1061 meye.contrast = ctrl->val << 10;
1062 break;
1063 case V4L2_CID_SATURATION:
1064 sony_pic_camera_command(
1065 SONY_PIC_COMMAND_SETCAMERACOLOR, ctrl->val);
1066 meye.colour = ctrl->val << 10;
1067 break;
1068 case V4L2_CID_MEYE_AGC:
1069 sony_pic_camera_command(
1070 SONY_PIC_COMMAND_SETCAMERAAGC, ctrl->val);
1071 meye.params.agc = ctrl->val;
1072 break;
1073 case V4L2_CID_SHARPNESS:
1074 sony_pic_camera_command(
1075 SONY_PIC_COMMAND_SETCAMERASHARPNESS, ctrl->val);
1076 meye.params.sharpness = ctrl->val;
1077 break;
1078 case V4L2_CID_MEYE_PICTURE:
1079 sony_pic_camera_command(
1080 SONY_PIC_COMMAND_SETCAMERAPICTURE, ctrl->val);
1081 meye.params.picture = ctrl->val;
1082 break;
1083 case V4L2_CID_JPEG_COMPRESSION_QUALITY:
1084 meye.params.quality = ctrl->val;
1085 break;
1086 case V4L2_CID_MEYE_FRAMERATE:
1087 meye.params.framerate = ctrl->val;
1088 break;
1089 default:
1090 mutex_unlock(&meye.lock);
1091 return -EINVAL;
1092 }
1093 mutex_unlock(&meye.lock);
1094
1095 return 0;
1096 }
1097
vidioc_enum_fmt_vid_cap(struct file * file,void * fh,struct v4l2_fmtdesc * f)1098 static int vidioc_enum_fmt_vid_cap(struct file *file, void *fh,
1099 struct v4l2_fmtdesc *f)
1100 {
1101 if (f->index > 1)
1102 return -EINVAL;
1103
1104 if (f->index == 0) {
1105 /* standard YUV 422 capture */
1106 f->flags = 0;
1107 f->pixelformat = V4L2_PIX_FMT_YUYV;
1108 } else {
1109 /* compressed MJPEG capture */
1110 f->pixelformat = V4L2_PIX_FMT_MJPEG;
1111 }
1112
1113 return 0;
1114 }
1115
vidioc_try_fmt_vid_cap(struct file * file,void * fh,struct v4l2_format * f)1116 static int vidioc_try_fmt_vid_cap(struct file *file, void *fh,
1117 struct v4l2_format *f)
1118 {
1119 if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_YUYV &&
1120 f->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG)
1121 return -EINVAL;
1122
1123 if (f->fmt.pix.field != V4L2_FIELD_ANY &&
1124 f->fmt.pix.field != V4L2_FIELD_NONE)
1125 return -EINVAL;
1126
1127 f->fmt.pix.field = V4L2_FIELD_NONE;
1128
1129 if (f->fmt.pix.width <= 320) {
1130 f->fmt.pix.width = 320;
1131 f->fmt.pix.height = 240;
1132 } else {
1133 f->fmt.pix.width = 640;
1134 f->fmt.pix.height = 480;
1135 }
1136
1137 f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
1138 f->fmt.pix.sizeimage = f->fmt.pix.height *
1139 f->fmt.pix.bytesperline;
1140 f->fmt.pix.colorspace = 0;
1141
1142 return 0;
1143 }
1144
vidioc_g_fmt_vid_cap(struct file * file,void * fh,struct v4l2_format * f)1145 static int vidioc_g_fmt_vid_cap(struct file *file, void *fh,
1146 struct v4l2_format *f)
1147 {
1148 switch (meye.mchip_mode) {
1149 case MCHIP_HIC_MODE_CONT_OUT:
1150 default:
1151 f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
1152 break;
1153 case MCHIP_HIC_MODE_CONT_COMP:
1154 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MJPEG;
1155 break;
1156 }
1157
1158 f->fmt.pix.field = V4L2_FIELD_NONE;
1159 f->fmt.pix.width = mchip_hsize();
1160 f->fmt.pix.height = mchip_vsize();
1161 f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
1162 f->fmt.pix.sizeimage = f->fmt.pix.height *
1163 f->fmt.pix.bytesperline;
1164
1165 return 0;
1166 }
1167
vidioc_s_fmt_vid_cap(struct file * file,void * fh,struct v4l2_format * f)1168 static int vidioc_s_fmt_vid_cap(struct file *file, void *fh,
1169 struct v4l2_format *f)
1170 {
1171 if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_YUYV &&
1172 f->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG)
1173 return -EINVAL;
1174
1175 if (f->fmt.pix.field != V4L2_FIELD_ANY &&
1176 f->fmt.pix.field != V4L2_FIELD_NONE)
1177 return -EINVAL;
1178
1179 f->fmt.pix.field = V4L2_FIELD_NONE;
1180 mutex_lock(&meye.lock);
1181
1182 if (f->fmt.pix.width <= 320) {
1183 f->fmt.pix.width = 320;
1184 f->fmt.pix.height = 240;
1185 meye.params.subsample = 1;
1186 } else {
1187 f->fmt.pix.width = 640;
1188 f->fmt.pix.height = 480;
1189 meye.params.subsample = 0;
1190 }
1191
1192 switch (f->fmt.pix.pixelformat) {
1193 case V4L2_PIX_FMT_YUYV:
1194 meye.mchip_mode = MCHIP_HIC_MODE_CONT_OUT;
1195 break;
1196 case V4L2_PIX_FMT_MJPEG:
1197 meye.mchip_mode = MCHIP_HIC_MODE_CONT_COMP;
1198 break;
1199 }
1200
1201 mutex_unlock(&meye.lock);
1202 f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
1203 f->fmt.pix.sizeimage = f->fmt.pix.height *
1204 f->fmt.pix.bytesperline;
1205 f->fmt.pix.colorspace = 0;
1206
1207 return 0;
1208 }
1209
vidioc_reqbufs(struct file * file,void * fh,struct v4l2_requestbuffers * req)1210 static int vidioc_reqbufs(struct file *file, void *fh,
1211 struct v4l2_requestbuffers *req)
1212 {
1213 int i;
1214
1215 if (req->memory != V4L2_MEMORY_MMAP)
1216 return -EINVAL;
1217
1218 if (meye.grab_fbuffer && req->count == gbuffers) {
1219 /* already allocated, no modifications */
1220 return 0;
1221 }
1222
1223 mutex_lock(&meye.lock);
1224 if (meye.grab_fbuffer) {
1225 for (i = 0; i < gbuffers; i++)
1226 if (meye.vma_use_count[i]) {
1227 mutex_unlock(&meye.lock);
1228 return -EINVAL;
1229 }
1230 rvfree(meye.grab_fbuffer, gbuffers * gbufsize);
1231 meye.grab_fbuffer = NULL;
1232 }
1233
1234 gbuffers = max(2, min((int)req->count, MEYE_MAX_BUFNBRS));
1235 req->count = gbuffers;
1236 meye.grab_fbuffer = rvmalloc(gbuffers * gbufsize);
1237
1238 if (!meye.grab_fbuffer) {
1239 printk(KERN_ERR "meye: v4l framebuffer allocation failed\n");
1240 mutex_unlock(&meye.lock);
1241 return -ENOMEM;
1242 }
1243
1244 for (i = 0; i < gbuffers; i++)
1245 meye.vma_use_count[i] = 0;
1246
1247 mutex_unlock(&meye.lock);
1248
1249 return 0;
1250 }
1251
vidioc_querybuf(struct file * file,void * fh,struct v4l2_buffer * buf)1252 static int vidioc_querybuf(struct file *file, void *fh, struct v4l2_buffer *buf)
1253 {
1254 unsigned int index = buf->index;
1255
1256 if (index >= gbuffers)
1257 return -EINVAL;
1258
1259 buf->bytesused = meye.grab_buffer[index].size;
1260 buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1261
1262 if (meye.grab_buffer[index].state == MEYE_BUF_USING)
1263 buf->flags |= V4L2_BUF_FLAG_QUEUED;
1264
1265 if (meye.grab_buffer[index].state == MEYE_BUF_DONE)
1266 buf->flags |= V4L2_BUF_FLAG_DONE;
1267
1268 buf->field = V4L2_FIELD_NONE;
1269 v4l2_buffer_set_timestamp(buf, meye.grab_buffer[index].ts);
1270 buf->sequence = meye.grab_buffer[index].sequence;
1271 buf->memory = V4L2_MEMORY_MMAP;
1272 buf->m.offset = index * gbufsize;
1273 buf->length = gbufsize;
1274
1275 return 0;
1276 }
1277
vidioc_qbuf(struct file * file,void * fh,struct v4l2_buffer * buf)1278 static int vidioc_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
1279 {
1280 if (buf->memory != V4L2_MEMORY_MMAP)
1281 return -EINVAL;
1282
1283 if (buf->index >= gbuffers)
1284 return -EINVAL;
1285
1286 if (meye.grab_buffer[buf->index].state != MEYE_BUF_UNUSED)
1287 return -EINVAL;
1288
1289 mutex_lock(&meye.lock);
1290 buf->flags |= V4L2_BUF_FLAG_QUEUED;
1291 buf->flags &= ~V4L2_BUF_FLAG_DONE;
1292 meye.grab_buffer[buf->index].state = MEYE_BUF_USING;
1293 kfifo_in_locked(&meye.grabq, (unsigned char *)&buf->index,
1294 sizeof(int), &meye.grabq_lock);
1295 mutex_unlock(&meye.lock);
1296
1297 return 0;
1298 }
1299
vidioc_dqbuf(struct file * file,void * fh,struct v4l2_buffer * buf)1300 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
1301 {
1302 int reqnr;
1303
1304 if (buf->memory != V4L2_MEMORY_MMAP)
1305 return -EINVAL;
1306
1307 mutex_lock(&meye.lock);
1308
1309 if (kfifo_len(&meye.doneq) == 0 && file->f_flags & O_NONBLOCK) {
1310 mutex_unlock(&meye.lock);
1311 return -EAGAIN;
1312 }
1313
1314 if (wait_event_interruptible(meye.proc_list,
1315 kfifo_len(&meye.doneq) != 0) < 0) {
1316 mutex_unlock(&meye.lock);
1317 return -EINTR;
1318 }
1319
1320 if (!kfifo_out_locked(&meye.doneq, (unsigned char *)&reqnr,
1321 sizeof(int), &meye.doneq_lock)) {
1322 mutex_unlock(&meye.lock);
1323 return -EBUSY;
1324 }
1325
1326 if (meye.grab_buffer[reqnr].state != MEYE_BUF_DONE) {
1327 mutex_unlock(&meye.lock);
1328 return -EINVAL;
1329 }
1330
1331 buf->index = reqnr;
1332 buf->bytesused = meye.grab_buffer[reqnr].size;
1333 buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1334 buf->field = V4L2_FIELD_NONE;
1335 v4l2_buffer_set_timestamp(buf, meye.grab_buffer[reqnr].ts);
1336 buf->sequence = meye.grab_buffer[reqnr].sequence;
1337 buf->memory = V4L2_MEMORY_MMAP;
1338 buf->m.offset = reqnr * gbufsize;
1339 buf->length = gbufsize;
1340 meye.grab_buffer[reqnr].state = MEYE_BUF_UNUSED;
1341 mutex_unlock(&meye.lock);
1342
1343 return 0;
1344 }
1345
vidioc_streamon(struct file * file,void * fh,enum v4l2_buf_type i)1346 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1347 {
1348 mutex_lock(&meye.lock);
1349
1350 switch (meye.mchip_mode) {
1351 case MCHIP_HIC_MODE_CONT_OUT:
1352 mchip_continuous_start();
1353 break;
1354 case MCHIP_HIC_MODE_CONT_COMP:
1355 mchip_cont_compression_start();
1356 break;
1357 default:
1358 mutex_unlock(&meye.lock);
1359 return -EINVAL;
1360 }
1361
1362 mutex_unlock(&meye.lock);
1363
1364 return 0;
1365 }
1366
vidioc_streamoff(struct file * file,void * fh,enum v4l2_buf_type i)1367 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1368 {
1369 mutex_lock(&meye.lock);
1370 mchip_hic_stop();
1371 kfifo_reset(&meye.grabq);
1372 kfifo_reset(&meye.doneq);
1373
1374 for (i = 0; i < MEYE_MAX_BUFNBRS; i++)
1375 meye.grab_buffer[i].state = MEYE_BUF_UNUSED;
1376
1377 mutex_unlock(&meye.lock);
1378 return 0;
1379 }
1380
vidioc_default(struct file * file,void * fh,bool valid_prio,unsigned int cmd,void * arg)1381 static long vidioc_default(struct file *file, void *fh, bool valid_prio,
1382 unsigned int cmd, void *arg)
1383 {
1384 switch (cmd) {
1385 case MEYEIOC_G_PARAMS:
1386 return meyeioc_g_params((struct meye_params *) arg);
1387
1388 case MEYEIOC_S_PARAMS:
1389 return meyeioc_s_params((struct meye_params *) arg);
1390
1391 case MEYEIOC_QBUF_CAPT:
1392 return meyeioc_qbuf_capt((int *) arg);
1393
1394 case MEYEIOC_SYNC:
1395 return meyeioc_sync(file, fh, (int *) arg);
1396
1397 case MEYEIOC_STILLCAPT:
1398 return meyeioc_stillcapt();
1399
1400 case MEYEIOC_STILLJCAPT:
1401 return meyeioc_stilljcapt((int *) arg);
1402
1403 default:
1404 return -ENOTTY;
1405 }
1406
1407 }
1408
meye_poll(struct file * file,poll_table * wait)1409 static __poll_t meye_poll(struct file *file, poll_table *wait)
1410 {
1411 __poll_t res = v4l2_ctrl_poll(file, wait);
1412
1413 mutex_lock(&meye.lock);
1414 poll_wait(file, &meye.proc_list, wait);
1415 if (kfifo_len(&meye.doneq))
1416 res |= EPOLLIN | EPOLLRDNORM;
1417 mutex_unlock(&meye.lock);
1418 return res;
1419 }
1420
meye_vm_open(struct vm_area_struct * vma)1421 static void meye_vm_open(struct vm_area_struct *vma)
1422 {
1423 long idx = (long)vma->vm_private_data;
1424 meye.vma_use_count[idx]++;
1425 }
1426
meye_vm_close(struct vm_area_struct * vma)1427 static void meye_vm_close(struct vm_area_struct *vma)
1428 {
1429 long idx = (long)vma->vm_private_data;
1430 meye.vma_use_count[idx]--;
1431 }
1432
1433 static const struct vm_operations_struct meye_vm_ops = {
1434 .open = meye_vm_open,
1435 .close = meye_vm_close,
1436 };
1437
meye_mmap(struct file * file,struct vm_area_struct * vma)1438 static int meye_mmap(struct file *file, struct vm_area_struct *vma)
1439 {
1440 unsigned long start = vma->vm_start;
1441 unsigned long size = vma->vm_end - vma->vm_start;
1442 unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
1443 unsigned long page, pos;
1444
1445 mutex_lock(&meye.lock);
1446 if (size > gbuffers * gbufsize || offset > gbuffers * gbufsize - size) {
1447 mutex_unlock(&meye.lock);
1448 return -EINVAL;
1449 }
1450 if (!meye.grab_fbuffer) {
1451 int i;
1452
1453 /* lazy allocation */
1454 meye.grab_fbuffer = rvmalloc(gbuffers*gbufsize);
1455 if (!meye.grab_fbuffer) {
1456 printk(KERN_ERR "meye: v4l framebuffer allocation failed\n");
1457 mutex_unlock(&meye.lock);
1458 return -ENOMEM;
1459 }
1460 for (i = 0; i < gbuffers; i++)
1461 meye.vma_use_count[i] = 0;
1462 }
1463 pos = (unsigned long)meye.grab_fbuffer + offset;
1464
1465 while (size > 0) {
1466 page = vmalloc_to_pfn((void *)pos);
1467 if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) {
1468 mutex_unlock(&meye.lock);
1469 return -EAGAIN;
1470 }
1471 start += PAGE_SIZE;
1472 pos += PAGE_SIZE;
1473 if (size > PAGE_SIZE)
1474 size -= PAGE_SIZE;
1475 else
1476 size = 0;
1477 }
1478
1479 vma->vm_ops = &meye_vm_ops;
1480 vma->vm_flags &= ~VM_IO; /* not I/O memory */
1481 vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
1482 vma->vm_private_data = (void *) (offset / gbufsize);
1483 meye_vm_open(vma);
1484
1485 mutex_unlock(&meye.lock);
1486 return 0;
1487 }
1488
1489 static const struct v4l2_file_operations meye_fops = {
1490 .owner = THIS_MODULE,
1491 .open = meye_open,
1492 .release = meye_release,
1493 .mmap = meye_mmap,
1494 .unlocked_ioctl = video_ioctl2,
1495 .poll = meye_poll,
1496 };
1497
1498 static const struct v4l2_ioctl_ops meye_ioctl_ops = {
1499 .vidioc_querycap = vidioc_querycap,
1500 .vidioc_enum_input = vidioc_enum_input,
1501 .vidioc_g_input = vidioc_g_input,
1502 .vidioc_s_input = vidioc_s_input,
1503 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1504 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1505 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1506 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1507 .vidioc_reqbufs = vidioc_reqbufs,
1508 .vidioc_querybuf = vidioc_querybuf,
1509 .vidioc_qbuf = vidioc_qbuf,
1510 .vidioc_dqbuf = vidioc_dqbuf,
1511 .vidioc_streamon = vidioc_streamon,
1512 .vidioc_streamoff = vidioc_streamoff,
1513 .vidioc_log_status = v4l2_ctrl_log_status,
1514 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1515 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1516 .vidioc_default = vidioc_default,
1517 };
1518
1519 static const struct video_device meye_template = {
1520 .name = "meye",
1521 .fops = &meye_fops,
1522 .ioctl_ops = &meye_ioctl_ops,
1523 .release = video_device_release_empty,
1524 .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING,
1525 };
1526
1527 static const struct v4l2_ctrl_ops meye_ctrl_ops = {
1528 .s_ctrl = meye_s_ctrl,
1529 };
1530
meye_suspend(struct device * dev)1531 static int __maybe_unused meye_suspend(struct device *dev)
1532 {
1533 meye.pm_mchip_mode = meye.mchip_mode;
1534 mchip_hic_stop();
1535 mchip_set(MCHIP_MM_INTA, 0x0);
1536 return 0;
1537 }
1538
meye_resume(struct device * dev)1539 static int __maybe_unused meye_resume(struct device *dev)
1540 {
1541 pci_write_config_word(meye.mchip_dev, MCHIP_PCI_SOFTRESET_SET, 1);
1542
1543 mchip_delay(MCHIP_HIC_CMD, 0);
1544 mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE);
1545 msleep(1);
1546 mchip_set(MCHIP_VRJ_SOFT_RESET, 1);
1547 msleep(1);
1548 mchip_set(MCHIP_MM_PCI_MODE, 5);
1549 msleep(1);
1550 mchip_set(MCHIP_MM_INTA, MCHIP_MM_INTA_HIC_1_MASK);
1551
1552 switch (meye.pm_mchip_mode) {
1553 case MCHIP_HIC_MODE_CONT_OUT:
1554 mchip_continuous_start();
1555 break;
1556 case MCHIP_HIC_MODE_CONT_COMP:
1557 mchip_cont_compression_start();
1558 break;
1559 }
1560 return 0;
1561 }
1562
meye_probe(struct pci_dev * pcidev,const struct pci_device_id * ent)1563 static int meye_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
1564 {
1565 static const struct v4l2_ctrl_config ctrl_agc = {
1566 .id = V4L2_CID_MEYE_AGC,
1567 .type = V4L2_CTRL_TYPE_INTEGER,
1568 .ops = &meye_ctrl_ops,
1569 .name = "AGC",
1570 .max = 63,
1571 .step = 1,
1572 .def = 48,
1573 .flags = V4L2_CTRL_FLAG_SLIDER,
1574 };
1575 static const struct v4l2_ctrl_config ctrl_picture = {
1576 .id = V4L2_CID_MEYE_PICTURE,
1577 .type = V4L2_CTRL_TYPE_INTEGER,
1578 .ops = &meye_ctrl_ops,
1579 .name = "Picture",
1580 .max = 63,
1581 .step = 1,
1582 };
1583 static const struct v4l2_ctrl_config ctrl_framerate = {
1584 .id = V4L2_CID_MEYE_FRAMERATE,
1585 .type = V4L2_CTRL_TYPE_INTEGER,
1586 .ops = &meye_ctrl_ops,
1587 .name = "Framerate",
1588 .max = 31,
1589 .step = 1,
1590 };
1591 struct v4l2_device *v4l2_dev = &meye.v4l2_dev;
1592 int ret = -EBUSY;
1593 unsigned long mchip_adr;
1594
1595 if (meye.mchip_dev != NULL) {
1596 printk(KERN_ERR "meye: only one device allowed!\n");
1597 return ret;
1598 }
1599
1600 ret = v4l2_device_register(&pcidev->dev, v4l2_dev);
1601 if (ret < 0) {
1602 v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
1603 return ret;
1604 }
1605 ret = -ENOMEM;
1606 meye.mchip_dev = pcidev;
1607
1608 meye.grab_temp = vmalloc(array_size(PAGE_SIZE, MCHIP_NB_PAGES_MJPEG));
1609 if (!meye.grab_temp)
1610 goto outvmalloc;
1611
1612 spin_lock_init(&meye.grabq_lock);
1613 if (kfifo_alloc(&meye.grabq, sizeof(int) * MEYE_MAX_BUFNBRS,
1614 GFP_KERNEL))
1615 goto outkfifoalloc1;
1616
1617 spin_lock_init(&meye.doneq_lock);
1618 if (kfifo_alloc(&meye.doneq, sizeof(int) * MEYE_MAX_BUFNBRS,
1619 GFP_KERNEL))
1620 goto outkfifoalloc2;
1621
1622 meye.vdev = meye_template;
1623 meye.vdev.v4l2_dev = &meye.v4l2_dev;
1624
1625 ret = sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERA, 1);
1626 if (ret) {
1627 v4l2_err(v4l2_dev, "meye: unable to power on the camera\n");
1628 v4l2_err(v4l2_dev, "meye: did you enable the camera in sonypi using the module options ?\n");
1629 goto outsonypienable;
1630 }
1631
1632 ret = pci_enable_device(meye.mchip_dev);
1633 if (ret) {
1634 v4l2_err(v4l2_dev, "meye: pci_enable_device failed\n");
1635 goto outenabledev;
1636 }
1637
1638 ret = -EIO;
1639 mchip_adr = pci_resource_start(meye.mchip_dev,0);
1640 if (!mchip_adr) {
1641 v4l2_err(v4l2_dev, "meye: mchip has no device base address\n");
1642 goto outregions;
1643 }
1644 if (!request_mem_region(pci_resource_start(meye.mchip_dev, 0),
1645 pci_resource_len(meye.mchip_dev, 0),
1646 "meye")) {
1647 v4l2_err(v4l2_dev, "meye: request_mem_region failed\n");
1648 goto outregions;
1649 }
1650 meye.mchip_mmregs = ioremap(mchip_adr, MCHIP_MM_REGS);
1651 if (!meye.mchip_mmregs) {
1652 v4l2_err(v4l2_dev, "meye: ioremap failed\n");
1653 goto outremap;
1654 }
1655
1656 meye.mchip_irq = pcidev->irq;
1657 if (request_irq(meye.mchip_irq, meye_irq,
1658 IRQF_SHARED, "meye", meye_irq)) {
1659 v4l2_err(v4l2_dev, "request_irq failed\n");
1660 goto outreqirq;
1661 }
1662
1663 pci_write_config_byte(meye.mchip_dev, PCI_CACHE_LINE_SIZE, 8);
1664 pci_write_config_byte(meye.mchip_dev, PCI_LATENCY_TIMER, 64);
1665
1666 pci_set_master(meye.mchip_dev);
1667
1668 /* Ask the camera to perform a soft reset. */
1669 pci_write_config_word(meye.mchip_dev, MCHIP_PCI_SOFTRESET_SET, 1);
1670
1671 mchip_delay(MCHIP_HIC_CMD, 0);
1672 mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE);
1673
1674 msleep(1);
1675 mchip_set(MCHIP_VRJ_SOFT_RESET, 1);
1676
1677 msleep(1);
1678 mchip_set(MCHIP_MM_PCI_MODE, 5);
1679
1680 msleep(1);
1681 mchip_set(MCHIP_MM_INTA, MCHIP_MM_INTA_HIC_1_MASK);
1682
1683 mutex_init(&meye.lock);
1684 init_waitqueue_head(&meye.proc_list);
1685
1686 v4l2_ctrl_handler_init(&meye.hdl, 3);
1687 v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops,
1688 V4L2_CID_BRIGHTNESS, 0, 63, 1, 32);
1689 v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops,
1690 V4L2_CID_HUE, 0, 63, 1, 32);
1691 v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops,
1692 V4L2_CID_CONTRAST, 0, 63, 1, 32);
1693 v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops,
1694 V4L2_CID_SATURATION, 0, 63, 1, 32);
1695 v4l2_ctrl_new_custom(&meye.hdl, &ctrl_agc, NULL);
1696 v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops,
1697 V4L2_CID_SHARPNESS, 0, 63, 1, 32);
1698 v4l2_ctrl_new_custom(&meye.hdl, &ctrl_picture, NULL);
1699 v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops,
1700 V4L2_CID_JPEG_COMPRESSION_QUALITY, 0, 10, 1, 8);
1701 v4l2_ctrl_new_custom(&meye.hdl, &ctrl_framerate, NULL);
1702 if (meye.hdl.error) {
1703 v4l2_err(v4l2_dev, "couldn't register controls\n");
1704 goto outvideoreg;
1705 }
1706
1707 v4l2_ctrl_handler_setup(&meye.hdl);
1708 meye.vdev.ctrl_handler = &meye.hdl;
1709
1710 if (video_register_device(&meye.vdev, VFL_TYPE_VIDEO,
1711 video_nr) < 0) {
1712 v4l2_err(v4l2_dev, "video_register_device failed\n");
1713 goto outvideoreg;
1714 }
1715
1716 v4l2_info(v4l2_dev, "Motion Eye Camera Driver v%s.\n",
1717 MEYE_DRIVER_VERSION);
1718 v4l2_info(v4l2_dev, "mchip KL5A72002 rev. %d, base %lx, irq %d\n",
1719 meye.mchip_dev->revision, mchip_adr, meye.mchip_irq);
1720
1721 return 0;
1722
1723 outvideoreg:
1724 v4l2_ctrl_handler_free(&meye.hdl);
1725 free_irq(meye.mchip_irq, meye_irq);
1726 outreqirq:
1727 iounmap(meye.mchip_mmregs);
1728 outremap:
1729 release_mem_region(pci_resource_start(meye.mchip_dev, 0),
1730 pci_resource_len(meye.mchip_dev, 0));
1731 outregions:
1732 pci_disable_device(meye.mchip_dev);
1733 outenabledev:
1734 sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERA, 0);
1735 outsonypienable:
1736 kfifo_free(&meye.doneq);
1737 outkfifoalloc2:
1738 kfifo_free(&meye.grabq);
1739 outkfifoalloc1:
1740 vfree(meye.grab_temp);
1741 outvmalloc:
1742 return ret;
1743 }
1744
meye_remove(struct pci_dev * pcidev)1745 static void meye_remove(struct pci_dev *pcidev)
1746 {
1747 video_unregister_device(&meye.vdev);
1748
1749 mchip_hic_stop();
1750
1751 mchip_dma_free();
1752
1753 /* disable interrupts */
1754 mchip_set(MCHIP_MM_INTA, 0x0);
1755
1756 free_irq(meye.mchip_irq, meye_irq);
1757
1758 iounmap(meye.mchip_mmregs);
1759
1760 release_mem_region(pci_resource_start(meye.mchip_dev, 0),
1761 pci_resource_len(meye.mchip_dev, 0));
1762
1763 pci_disable_device(meye.mchip_dev);
1764
1765 sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERA, 0);
1766
1767 kfifo_free(&meye.doneq);
1768 kfifo_free(&meye.grabq);
1769
1770 vfree(meye.grab_temp);
1771
1772 if (meye.grab_fbuffer) {
1773 rvfree(meye.grab_fbuffer, gbuffers*gbufsize);
1774 meye.grab_fbuffer = NULL;
1775 }
1776
1777 printk(KERN_INFO "meye: removed\n");
1778 }
1779
1780 static const struct pci_device_id meye_pci_tbl[] = {
1781 { PCI_VDEVICE(KAWASAKI, PCI_DEVICE_ID_MCHIP_KL5A72002), 0 },
1782 { }
1783 };
1784
1785 MODULE_DEVICE_TABLE(pci, meye_pci_tbl);
1786
1787 static SIMPLE_DEV_PM_OPS(meye_pm_ops, meye_suspend, meye_resume);
1788
1789 static struct pci_driver meye_driver = {
1790 .name = "meye",
1791 .id_table = meye_pci_tbl,
1792 .probe = meye_probe,
1793 .remove = meye_remove,
1794 .driver.pm = &meye_pm_ops,
1795 };
1796
meye_init(void)1797 static int __init meye_init(void)
1798 {
1799 gbuffers = max(2, min((int)gbuffers, MEYE_MAX_BUFNBRS));
1800 if (gbufsize > MEYE_MAX_BUFSIZE)
1801 gbufsize = MEYE_MAX_BUFSIZE;
1802 gbufsize = PAGE_ALIGN(gbufsize);
1803 printk(KERN_INFO "meye: using %d buffers with %dk (%dk total) for capture\n",
1804 gbuffers,
1805 gbufsize / 1024, gbuffers * gbufsize / 1024);
1806 return pci_register_driver(&meye_driver);
1807 }
1808
meye_exit(void)1809 static void __exit meye_exit(void)
1810 {
1811 pci_unregister_driver(&meye_driver);
1812 }
1813
1814 module_init(meye_init);
1815 module_exit(meye_exit);
1816