/* * Motion Eye video4linux driver for Sony Vaio PictureBook * * Copyright (C) 2001-2004 Stelian Pop * * Copyright (C) 2001-2002 Alcôve * * Copyright (C) 2000 Andrew Tridgell * * Earlier work by Werner Almesberger, Paul `Rusty' Russell and Paul Mackerras. * * Some parts borrowed from various video4linux drivers, especially * bttv-driver.c and zoran.c, see original files for credits. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "meye.h" #include MODULE_AUTHOR("Stelian Pop "); MODULE_DESCRIPTION("v4l2 driver for the MotionEye camera"); MODULE_LICENSE("GPL"); MODULE_VERSION(MEYE_DRIVER_VERSION); /* number of grab buffers */ static unsigned int gbuffers = 2; module_param(gbuffers, int, 0444); MODULE_PARM_DESC(gbuffers, "number of capture buffers, default is 2 (32 max)"); /* size of a grab buffer */ static unsigned int gbufsize = MEYE_MAX_BUFSIZE; module_param(gbufsize, int, 0444); MODULE_PARM_DESC(gbufsize, "size of the capture buffers, default is 614400 (will be rounded up to a page multiple)"); /* /dev/videoX registration number */ static int video_nr = -1; module_param(video_nr, int, 0444); MODULE_PARM_DESC(video_nr, "video device to register (0=/dev/video0, etc)"); /* driver structure - only one possible */ static struct meye meye; /****************************************************************************/ /* Memory allocation routines (stolen from bttv-driver.c) */ /****************************************************************************/ static void *rvmalloc(unsigned long size) { void *mem; unsigned long adr; size = PAGE_ALIGN(size); mem = vmalloc_32(size); if (mem) { memset(mem, 0, size); adr = (unsigned long) mem; while (size > 0) { SetPageReserved(vmalloc_to_page((void *)adr)); adr += PAGE_SIZE; size -= PAGE_SIZE; } } return mem; } static void rvfree(void * mem, unsigned long size) { unsigned long adr; if (mem) { adr = (unsigned long) mem; while ((long) size > 0) { ClearPageReserved(vmalloc_to_page((void *)adr)); adr += PAGE_SIZE; size -= PAGE_SIZE; } vfree(mem); } } /* * return a page table pointing to N pages of locked memory * * NOTE: The meye device expects DMA addresses on 32 bits, we build * a table of 1024 entries = 4 bytes * 1024 = 4096 bytes. */ static int ptable_alloc(void) { u32 *pt; int i; memset(meye.mchip_ptable, 0, sizeof(meye.mchip_ptable)); /* give only 32 bit DMA addresses */ if (dma_set_mask(&meye.mchip_dev->dev, DMA_BIT_MASK(32))) return -1; meye.mchip_ptable_toc = dma_alloc_coherent(&meye.mchip_dev->dev, PAGE_SIZE, &meye.mchip_dmahandle, GFP_KERNEL); if (!meye.mchip_ptable_toc) { meye.mchip_dmahandle = 0; return -1; } pt = meye.mchip_ptable_toc; for (i = 0; i < MCHIP_NB_PAGES; i++) { dma_addr_t dma; meye.mchip_ptable[i] = dma_alloc_coherent(&meye.mchip_dev->dev, PAGE_SIZE, &dma, GFP_KERNEL); if (!meye.mchip_ptable[i]) { int j; pt = meye.mchip_ptable_toc; for (j = 0; j < i; ++j) { dma = (dma_addr_t) *pt; dma_free_coherent(&meye.mchip_dev->dev, PAGE_SIZE, meye.mchip_ptable[j], dma); pt++; } dma_free_coherent(&meye.mchip_dev->dev, PAGE_SIZE, meye.mchip_ptable_toc, meye.mchip_dmahandle); meye.mchip_ptable_toc = NULL; meye.mchip_dmahandle = 0; return -1; } *pt = (u32) dma; pt++; } return 0; } static void ptable_free(void) { u32 *pt; int i; pt = meye.mchip_ptable_toc; for (i = 0; i < MCHIP_NB_PAGES; i++) { dma_addr_t dma = (dma_addr_t) *pt; if (meye.mchip_ptable[i]) dma_free_coherent(&meye.mchip_dev->dev, PAGE_SIZE, meye.mchip_ptable[i], dma); pt++; } if (meye.mchip_ptable_toc) dma_free_coherent(&meye.mchip_dev->dev, PAGE_SIZE, meye.mchip_ptable_toc, meye.mchip_dmahandle); memset(meye.mchip_ptable, 0, sizeof(meye.mchip_ptable)); meye.mchip_ptable_toc = NULL; meye.mchip_dmahandle = 0; } /* copy data from ptable into buf */ static void ptable_copy(u8 *buf, int start, int size, int pt_pages) { int i; for (i = 0; i < (size / PAGE_SIZE) * PAGE_SIZE; i += PAGE_SIZE) { memcpy(buf + i, meye.mchip_ptable[start++], PAGE_SIZE); if (start >= pt_pages) start = 0; } memcpy(buf + i, meye.mchip_ptable[start], size % PAGE_SIZE); } /****************************************************************************/ /* JPEG tables at different qualities to load into the VRJ chip */ /****************************************************************************/ /* return a set of quantisation tables based on a quality from 1 to 10 */ static u16 *jpeg_quantisation_tables(int *length, int quality) { static u16 jpeg_tables[][70] = { { 0xdbff, 0x4300, 0xff00, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xdbff, 0x4300, 0xff01, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, }, { 0xdbff, 0x4300, 0x5000, 0x3c37, 0x3c46, 0x5032, 0x4146, 0x5a46, 0x5055, 0x785f, 0x82c8, 0x6e78, 0x786e, 0xaff5, 0x91b9, 0xffc8, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xdbff, 0x4300, 0x5501, 0x5a5a, 0x6978, 0xeb78, 0x8282, 0xffeb, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, }, { 0xdbff, 0x4300, 0x2800, 0x1e1c, 0x1e23, 0x2819, 0x2123, 0x2d23, 0x282b, 0x3c30, 0x4164, 0x373c, 0x3c37, 0x587b, 0x495d, 0x9164, 0x9980, 0x8f96, 0x8c80, 0xa08a, 0xe6b4, 0xa0c3, 0xdaaa, 0x8aad, 0xc88c, 0xcbff, 0xeeda, 0xfff5, 0xffff, 0xc19b, 0xffff, 0xfaff, 0xe6ff, 0xfffd, 0xfff8, 0xdbff, 0x4300, 0x2b01, 0x2d2d, 0x353c, 0x763c, 0x4141, 0xf876, 0x8ca5, 0xf8a5, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xfff8, }, { 0xdbff, 0x4300, 0x1b00, 0x1412, 0x1417, 0x1b11, 0x1617, 0x1e17, 0x1b1c, 0x2820, 0x2b42, 0x2528, 0x2825, 0x3a51, 0x303d, 0x6042, 0x6555, 0x5f64, 0x5d55, 0x6a5b, 0x9978, 0x6a81, 0x9071, 0x5b73, 0x855d, 0x86b5, 0x9e90, 0xaba3, 0xabad, 0x8067, 0xc9bc, 0xa6ba, 0x99c7, 0xaba8, 0xffa4, 0xdbff, 0x4300, 0x1c01, 0x1e1e, 0x2328, 0x4e28, 0x2b2b, 0xa44e, 0x5d6e, 0xa46e, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xffa4, }, { 0xdbff, 0x4300, 0x1400, 0x0f0e, 0x0f12, 0x140d, 0x1012, 0x1712, 0x1415, 0x1e18, 0x2132, 0x1c1e, 0x1e1c, 0x2c3d, 0x242e, 0x4932, 0x4c40, 0x474b, 0x4640, 0x5045, 0x735a, 0x5062, 0x6d55, 0x4556, 0x6446, 0x6588, 0x776d, 0x817b, 0x8182, 0x604e, 0x978d, 0x7d8c, 0x7396, 0x817e, 0xff7c, 0xdbff, 0x4300, 0x1501, 0x1717, 0x1a1e, 0x3b1e, 0x2121, 0x7c3b, 0x4653, 0x7c53, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0xff7c, }, { 0xdbff, 0x4300, 0x1000, 0x0c0b, 0x0c0e, 0x100a, 0x0d0e, 0x120e, 0x1011, 0x1813, 0x1a28, 0x1618, 0x1816, 0x2331, 0x1d25, 0x3a28, 0x3d33, 0x393c, 0x3833, 0x4037, 0x5c48, 0x404e, 0x5744, 0x3745, 0x5038, 0x516d, 0x5f57, 0x6762, 0x6768, 0x4d3e, 0x7971, 0x6470, 0x5c78, 0x6765, 0xff63, 0xdbff, 0x4300, 0x1101, 0x1212, 0x1518, 0x2f18, 0x1a1a, 0x632f, 0x3842, 0x6342, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0xff63, }, { 0xdbff, 0x4300, 0x0d00, 0x0a09, 0x0a0b, 0x0d08, 0x0a0b, 0x0e0b, 0x0d0e, 0x130f, 0x1520, 0x1213, 0x1312, 0x1c27, 0x171e, 0x2e20, 0x3129, 0x2e30, 0x2d29, 0x332c, 0x4a3a, 0x333e, 0x4636, 0x2c37, 0x402d, 0x4157, 0x4c46, 0x524e, 0x5253, 0x3e32, 0x615a, 0x505a, 0x4a60, 0x5251, 0xff4f, 0xdbff, 0x4300, 0x0e01, 0x0e0e, 0x1113, 0x2613, 0x1515, 0x4f26, 0x2d35, 0x4f35, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0xff4f, }, { 0xdbff, 0x4300, 0x0a00, 0x0707, 0x0708, 0x0a06, 0x0808, 0x0b08, 0x0a0a, 0x0e0b, 0x1018, 0x0d0e, 0x0e0d, 0x151d, 0x1116, 0x2318, 0x251f, 0x2224, 0x221f, 0x2621, 0x372b, 0x262f, 0x3429, 0x2129, 0x3022, 0x3141, 0x3934, 0x3e3b, 0x3e3e, 0x2e25, 0x4944, 0x3c43, 0x3748, 0x3e3d, 0xff3b, 0xdbff, 0x4300, 0x0a01, 0x0b0b, 0x0d0e, 0x1c0e, 0x1010, 0x3b1c, 0x2228, 0x3b28, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0xff3b, }, { 0xdbff, 0x4300, 0x0600, 0x0504, 0x0506, 0x0604, 0x0506, 0x0706, 0x0607, 0x0a08, 0x0a10, 0x090a, 0x0a09, 0x0e14, 0x0c0f, 0x1710, 0x1814, 0x1718, 0x1614, 0x1a16, 0x251d, 0x1a1f, 0x231b, 0x161c, 0x2016, 0x202c, 0x2623, 0x2927, 0x292a, 0x1f19, 0x302d, 0x282d, 0x2530, 0x2928, 0xff28, 0xdbff, 0x4300, 0x0701, 0x0707, 0x080a, 0x130a, 0x0a0a, 0x2813, 0x161a, 0x281a, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0xff28, }, { 0xdbff, 0x4300, 0x0300, 0x0202, 0x0203, 0x0302, 0x0303, 0x0403, 0x0303, 0x0504, 0x0508, 0x0405, 0x0504, 0x070a, 0x0607, 0x0c08, 0x0c0a, 0x0b0c, 0x0b0a, 0x0d0b, 0x120e, 0x0d10, 0x110e, 0x0b0e, 0x100b, 0x1016, 0x1311, 0x1514, 0x1515, 0x0f0c, 0x1817, 0x1416, 0x1218, 0x1514, 0xff14, 0xdbff, 0x4300, 0x0301, 0x0404, 0x0405, 0x0905, 0x0505, 0x1409, 0x0b0d, 0x140d, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0xff14, }, { 0xdbff, 0x4300, 0x0100, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0xff01, 0xdbff, 0x4300, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0xff01, } }; if (quality < 0 || quality > 10) { printk(KERN_WARNING "meye: invalid quality level %d - using 8\n", quality); quality = 8; } *length = ARRAY_SIZE(jpeg_tables[quality]); return jpeg_tables[quality]; } /* return a generic set of huffman tables */ static u16 *jpeg_huffman_tables(int *length) { static u16 tables[] = { 0xC4FF, 0xB500, 0x0010, 0x0102, 0x0303, 0x0402, 0x0503, 0x0405, 0x0004, 0x0100, 0x017D, 0x0302, 0x0400, 0x0511, 0x2112, 0x4131, 0x1306, 0x6151, 0x2207, 0x1471, 0x8132, 0xA191, 0x2308, 0xB142, 0x15C1, 0xD152, 0x24F0, 0x6233, 0x8272, 0x0A09, 0x1716, 0x1918, 0x251A, 0x2726, 0x2928, 0x342A, 0x3635, 0x3837, 0x3A39, 0x4443, 0x4645, 0x4847, 0x4A49, 0x5453, 0x5655, 0x5857, 0x5A59, 0x6463, 0x6665, 0x6867, 0x6A69, 0x7473, 0x7675, 0x7877, 0x7A79, 0x8483, 0x8685, 0x8887, 0x8A89, 0x9392, 0x9594, 0x9796, 0x9998, 0xA29A, 0xA4A3, 0xA6A5, 0xA8A7, 0xAAA9, 0xB3B2, 0xB5B4, 0xB7B6, 0xB9B8, 0xC2BA, 0xC4C3, 0xC6C5, 0xC8C7, 0xCAC9, 0xD3D2, 0xD5D4, 0xD7D6, 0xD9D8, 0xE1DA, 0xE3E2, 0xE5E4, 0xE7E6, 0xE9E8, 0xF1EA, 0xF3F2, 0xF5F4, 0xF7F6, 0xF9F8, 0xFFFA, 0xC4FF, 0xB500, 0x0011, 0x0102, 0x0402, 0x0304, 0x0704, 0x0405, 0x0004, 0x0201, 0x0077, 0x0201, 0x1103, 0x0504, 0x3121, 0x1206, 0x5141, 0x6107, 0x1371, 0x3222, 0x0881, 0x4214, 0xA191, 0xC1B1, 0x2309, 0x5233, 0x15F0, 0x7262, 0x0AD1, 0x2416, 0xE134, 0xF125, 0x1817, 0x1A19, 0x2726, 0x2928, 0x352A, 0x3736, 0x3938, 0x433A, 0x4544, 0x4746, 0x4948, 0x534A, 0x5554, 0x5756, 0x5958, 0x635A, 0x6564, 0x6766, 0x6968, 0x736A, 0x7574, 0x7776, 0x7978, 0x827A, 0x8483, 0x8685, 0x8887, 0x8A89, 0x9392, 0x9594, 0x9796, 0x9998, 0xA29A, 0xA4A3, 0xA6A5, 0xA8A7, 0xAAA9, 0xB3B2, 0xB5B4, 0xB7B6, 0xB9B8, 0xC2BA, 0xC4C3, 0xC6C5, 0xC8C7, 0xCAC9, 0xD3D2, 0xD5D4, 0xD7D6, 0xD9D8, 0xE2DA, 0xE4E3, 0xE6E5, 0xE8E7, 0xEAE9, 0xF3F2, 0xF5F4, 0xF7F6, 0xF9F8, 0xFFFA, 0xC4FF, 0x1F00, 0x0000, 0x0501, 0x0101, 0x0101, 0x0101, 0x0000, 0x0000, 0x0000, 0x0000, 0x0201, 0x0403, 0x0605, 0x0807, 0x0A09, 0xFF0B, 0xC4FF, 0x1F00, 0x0001, 0x0103, 0x0101, 0x0101, 0x0101, 0x0101, 0x0000, 0x0000, 0x0000, 0x0201, 0x0403, 0x0605, 0x0807, 0x0A09, 0xFF0B }; *length = ARRAY_SIZE(tables); return tables; } /****************************************************************************/ /* MCHIP low-level functions */ /****************************************************************************/ /* returns the horizontal capture size */ static inline int mchip_hsize(void) { return meye.params.subsample ? 320 : 640; } /* returns the vertical capture size */ static inline int mchip_vsize(void) { return meye.params.subsample ? 240 : 480; } /* waits for a register to be available */ static void mchip_sync(int reg) { u32 status; int i; if (reg == MCHIP_MM_FIFO_DATA) { for (i = 0; i < MCHIP_REG_TIMEOUT; i++) { status = readl(meye.mchip_mmregs + MCHIP_MM_FIFO_STATUS); if (!(status & MCHIP_MM_FIFO_WAIT)) { printk(KERN_WARNING "meye: fifo not ready\n"); return; } if (status & MCHIP_MM_FIFO_READY) return; udelay(1); } } else if (reg > 0x80) { u32 mask = (reg < 0x100) ? MCHIP_HIC_STATUS_MCC_RDY : MCHIP_HIC_STATUS_VRJ_RDY; for (i = 0; i < MCHIP_REG_TIMEOUT; i++) { status = readl(meye.mchip_mmregs + MCHIP_HIC_STATUS); if (status & mask) return; udelay(1); } } else return; printk(KERN_WARNING "meye: mchip_sync() timeout on reg 0x%x status=0x%x\n", reg, status); } /* sets a value into the register */ static inline void mchip_set(int reg, u32 v) { mchip_sync(reg); writel(v, meye.mchip_mmregs + reg); } /* get the register value */ static inline u32 mchip_read(int reg) { mchip_sync(reg); return readl(meye.mchip_mmregs + reg); } /* wait for a register to become a particular value */ static inline int mchip_delay(u32 reg, u32 v) { int n = 10; while (--n && mchip_read(reg) != v) udelay(1); return n; } /* setup subsampling */ static void mchip_subsample(void) { mchip_set(MCHIP_MCC_R_SAMPLING, meye.params.subsample); mchip_set(MCHIP_MCC_R_XRANGE, mchip_hsize()); mchip_set(MCHIP_MCC_R_YRANGE, mchip_vsize()); mchip_set(MCHIP_MCC_B_XRANGE, mchip_hsize()); mchip_set(MCHIP_MCC_B_YRANGE, mchip_vsize()); mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE); } /* set the framerate into the mchip */ static void mchip_set_framerate(void) { mchip_set(MCHIP_HIC_S_RATE, meye.params.framerate); } /* load some huffman and quantisation tables into the VRJ chip ready for JPEG compression */ static void mchip_load_tables(void) { int i; int length; u16 *tables; tables = jpeg_huffman_tables(&length); for (i = 0; i < length; i++) writel(tables[i], meye.mchip_mmregs + MCHIP_VRJ_TABLE_DATA); tables = jpeg_quantisation_tables(&length, meye.params.quality); for (i = 0; i < length; i++) writel(tables[i], meye.mchip_mmregs + MCHIP_VRJ_TABLE_DATA); } /* setup the VRJ parameters in the chip */ static void mchip_vrj_setup(u8 mode) { mchip_set(MCHIP_VRJ_BUS_MODE, 5); mchip_set(MCHIP_VRJ_SIGNAL_ACTIVE_LEVEL, 0x1f); mchip_set(MCHIP_VRJ_PDAT_USE, 1); mchip_set(MCHIP_VRJ_IRQ_FLAG, 0xa0); mchip_set(MCHIP_VRJ_MODE_SPECIFY, mode); mchip_set(MCHIP_VRJ_NUM_LINES, mchip_vsize()); mchip_set(MCHIP_VRJ_NUM_PIXELS, mchip_hsize()); mchip_set(MCHIP_VRJ_NUM_COMPONENTS, 0x1b); mchip_set(MCHIP_VRJ_LIMIT_COMPRESSED_LO, 0xFFFF); mchip_set(MCHIP_VRJ_LIMIT_COMPRESSED_HI, 0xFFFF); mchip_set(MCHIP_VRJ_COMP_DATA_FORMAT, 0xC); mchip_set(MCHIP_VRJ_RESTART_INTERVAL, 0); mchip_set(MCHIP_VRJ_SOF1, 0x601); mchip_set(MCHIP_VRJ_SOF2, 0x1502); mchip_set(MCHIP_VRJ_SOF3, 0x1503); mchip_set(MCHIP_VRJ_SOF4, 0x1596); mchip_set(MCHIP_VRJ_SOS, 0x0ed0); mchip_load_tables(); } /* sets the DMA parameters into the chip */ static void mchip_dma_setup(dma_addr_t dma_addr) { int i; mchip_set(MCHIP_MM_PT_ADDR, (u32)dma_addr); for (i = 0; i < 4; i++) mchip_set(MCHIP_MM_FIR(i), 0); meye.mchip_fnum = 0; } /* setup for DMA transfers - also zeros the framebuffer */ static int mchip_dma_alloc(void) { if (!meye.mchip_dmahandle) if (ptable_alloc()) return -1; return 0; } /* frees the DMA buffer */ static void mchip_dma_free(void) { if (meye.mchip_dmahandle) { mchip_dma_setup(0); ptable_free(); } } /* stop any existing HIC action and wait for any dma to complete then reset the dma engine */ static void mchip_hic_stop(void) { int i, j; meye.mchip_mode = MCHIP_HIC_MODE_NOOP; if (!(mchip_read(MCHIP_HIC_STATUS) & MCHIP_HIC_STATUS_BUSY)) return; for (i = 0; i < 20; ++i) { mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_STOP); mchip_delay(MCHIP_HIC_CMD, 0); for (j = 0; j < 100; ++j) { if (mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE)) return; msleep(1); } printk(KERN_ERR "meye: need to reset HIC!\n"); mchip_set(MCHIP_HIC_CTL, MCHIP_HIC_CTL_SOFT_RESET); msleep(250); } printk(KERN_ERR "meye: resetting HIC hanged!\n"); } /****************************************************************************/ /* MCHIP frame processing functions */ /****************************************************************************/ /* get the next ready frame from the dma engine */ static u32 mchip_get_frame(void) { return mchip_read(MCHIP_MM_FIR(meye.mchip_fnum)); } /* frees the current frame from the dma engine */ static void mchip_free_frame(void) { mchip_set(MCHIP_MM_FIR(meye.mchip_fnum), 0); meye.mchip_fnum++; meye.mchip_fnum %= 4; } /* read one frame from the framebuffer assuming it was captured using a uncompressed transfer */ static void mchip_cont_read_frame(u32 v, u8 *buf, int size) { int pt_id; pt_id = (v >> 17) & 0x3FF; ptable_copy(buf, pt_id, size, MCHIP_NB_PAGES); } /* read a compressed frame from the framebuffer */ static int mchip_comp_read_frame(u32 v, u8 *buf, int size) { int pt_start, pt_end, trailer; int fsize; int i; pt_start = (v >> 19) & 0xFF; pt_end = (v >> 11) & 0xFF; trailer = (v >> 1) & 0x3FF; if (pt_end < pt_start) fsize = (MCHIP_NB_PAGES_MJPEG - pt_start) * PAGE_SIZE + pt_end * PAGE_SIZE + trailer * 4; else fsize = (pt_end - pt_start) * PAGE_SIZE + trailer * 4; if (fsize > size) { printk(KERN_WARNING "meye: oversized compressed frame %d\n", fsize); return -1; } ptable_copy(buf, pt_start, fsize, MCHIP_NB_PAGES_MJPEG); #ifdef MEYE_JPEG_CORRECTION /* Some mchip generated jpeg frames are incorrect. In most * (all ?) of those cases, the final EOI (0xff 0xd9) marker * is not present at the end of the frame. * * Since adding the final marker is not enough to restore * the jpeg integrity, we drop the frame. */ for (i = fsize - 1; i > 0 && buf[i] == 0xff; i--) ; if (i < 2 || buf[i - 1] != 0xff || buf[i] != 0xd9) return -1; #endif return fsize; } /* take a picture into SDRAM */ static void mchip_take_picture(void) { int i; mchip_hic_stop(); mchip_subsample(); mchip_dma_setup(meye.mchip_dmahandle); mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_CAP); mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START); mchip_delay(MCHIP_HIC_CMD, 0); for (i = 0; i < 100; ++i) { if (mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE)) break; msleep(1); } } /* dma a previously taken picture into a buffer */ static void mchip_get_picture(u8 *buf, int bufsize) { u32 v; int i; mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_OUT); mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START); mchip_delay(MCHIP_HIC_CMD, 0); for (i = 0; i < 100; ++i) { if (mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE)) break; msleep(1); } for (i = 0; i < 4; ++i) { v = mchip_get_frame(); if (v & MCHIP_MM_FIR_RDY) { mchip_cont_read_frame(v, buf, bufsize); break; } mchip_free_frame(); } } /* start continuous dma capture */ static void mchip_continuous_start(void) { mchip_hic_stop(); mchip_subsample(); mchip_set_framerate(); mchip_dma_setup(meye.mchip_dmahandle); meye.mchip_mode = MCHIP_HIC_MODE_CONT_OUT; mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_CONT_OUT); mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START); mchip_delay(MCHIP_HIC_CMD, 0); } /* compress one frame into a buffer */ static int mchip_compress_frame(u8 *buf, int bufsize) { u32 v; int len = -1, i; mchip_vrj_setup(0x3f); udelay(50); mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_COMP); mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START); mchip_delay(MCHIP_HIC_CMD, 0); for (i = 0; i < 100; ++i) { if (mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE)) break; msleep(1); } for (i = 0; i < 4; ++i) { v = mchip_get_frame(); if (v & MCHIP_MM_FIR_RDY) { len = mchip_comp_read_frame(v, buf, bufsize); break; } mchip_free_frame(); } return len; } #if 0 /* uncompress one image into a buffer */ static int mchip_uncompress_frame(u8 *img, int imgsize, u8 *buf, int bufsize) { mchip_vrj_setup(0x3f); udelay(50); mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_DECOMP); mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START); mchip_delay(MCHIP_HIC_CMD, 0); return mchip_comp_read_frame(buf, bufsize); } #endif /* start continuous compressed capture */ static void mchip_cont_compression_start(void) { mchip_hic_stop(); mchip_vrj_setup(0x3f); mchip_subsample(); mchip_set_framerate(); mchip_dma_setup(meye.mchip_dmahandle); meye.mchip_mode = MCHIP_HIC_MODE_CONT_COMP; mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_CONT_COMP); mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START); mchip_delay(MCHIP_HIC_CMD, 0); } /****************************************************************************/ /* Interrupt handling */ /****************************************************************************/ static irqreturn_t meye_irq(int irq, void *dev_id) { u32 v; int reqnr; static int sequence; v = mchip_read(MCHIP_MM_INTA); if (meye.mchip_mode != MCHIP_HIC_MODE_CONT_OUT && meye.mchip_mode != MCHIP_HIC_MODE_CONT_COMP) return IRQ_NONE; again: v = mchip_get_frame(); if (!(v & MCHIP_MM_FIR_RDY)) return IRQ_HANDLED; if (meye.mchip_mode == MCHIP_HIC_MODE_CONT_OUT) { if (kfifo_out_locked(&meye.grabq, (unsigned char *)&reqnr, sizeof(int), &meye.grabq_lock) != sizeof(int)) { mchip_free_frame(); return IRQ_HANDLED; } mchip_cont_read_frame(v, meye.grab_fbuffer + gbufsize * reqnr, mchip_hsize() * mchip_vsize() * 2); meye.grab_buffer[reqnr].size = mchip_hsize() * mchip_vsize() * 2; meye.grab_buffer[reqnr].state = MEYE_BUF_DONE; v4l2_get_timestamp(&meye.grab_buffer[reqnr].timestamp); meye.grab_buffer[reqnr].sequence = sequence++; kfifo_in_locked(&meye.doneq, (unsigned char *)&reqnr, sizeof(int), &meye.doneq_lock); wake_up_interruptible(&meye.proc_list); } else { int size; size = mchip_comp_read_frame(v, meye.grab_temp, gbufsize); if (size == -1) { mchip_free_frame(); goto again; } if (kfifo_out_locked(&meye.grabq, (unsigned char *)&reqnr, sizeof(int), &meye.grabq_lock) != sizeof(int)) { mchip_free_frame(); goto again; } memcpy(meye.grab_fbuffer + gbufsize * reqnr, meye.grab_temp, size); meye.grab_buffer[reqnr].size = size; meye.grab_buffer[reqnr].state = MEYE_BUF_DONE; v4l2_get_timestamp(&meye.grab_buffer[reqnr].timestamp); meye.grab_buffer[reqnr].sequence = sequence++; kfifo_in_locked(&meye.doneq, (unsigned char *)&reqnr, sizeof(int), &meye.doneq_lock); wake_up_interruptible(&meye.proc_list); } mchip_free_frame(); goto again; } /****************************************************************************/ /* video4linux integration */ /****************************************************************************/ static int meye_open(struct file *file) { int i; if (test_and_set_bit(0, &meye.in_use)) return -EBUSY; mchip_hic_stop(); if (mchip_dma_alloc()) { printk(KERN_ERR "meye: mchip framebuffer allocation failed\n"); clear_bit(0, &meye.in_use); return -ENOBUFS; } for (i = 0; i < MEYE_MAX_BUFNBRS; i++) meye.grab_buffer[i].state = MEYE_BUF_UNUSED; kfifo_reset(&meye.grabq); kfifo_reset(&meye.doneq); return v4l2_fh_open(file); } static int meye_release(struct file *file) { mchip_hic_stop(); mchip_dma_free(); clear_bit(0, &meye.in_use); return v4l2_fh_release(file); } static int meyeioc_g_params(struct meye_params *p) { *p = meye.params; return 0; } static int meyeioc_s_params(struct meye_params *jp) { if (jp->subsample > 1) return -EINVAL; if (jp->quality > 10) return -EINVAL; if (jp->sharpness > 63 || jp->agc > 63 || jp->picture > 63) return -EINVAL; if (jp->framerate > 31) return -EINVAL; mutex_lock(&meye.lock); if (meye.params.subsample != jp->subsample || meye.params.quality != jp->quality) mchip_hic_stop(); /* need restart */ meye.params = *jp; sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERASHARPNESS, meye.params.sharpness); sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERAAGC, meye.params.agc); sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERAPICTURE, meye.params.picture); mutex_unlock(&meye.lock); return 0; } static int meyeioc_qbuf_capt(int *nb) { if (!meye.grab_fbuffer) return -EINVAL; if (*nb >= gbuffers) return -EINVAL; if (*nb < 0) { /* stop capture */ mchip_hic_stop(); return 0; } if (meye.grab_buffer[*nb].state != MEYE_BUF_UNUSED) return -EBUSY; mutex_lock(&meye.lock); if (meye.mchip_mode != MCHIP_HIC_MODE_CONT_COMP) mchip_cont_compression_start(); meye.grab_buffer[*nb].state = MEYE_BUF_USING; kfifo_in_locked(&meye.grabq, (unsigned char *)nb, sizeof(int), &meye.grabq_lock); mutex_unlock(&meye.lock); return 0; } static int meyeioc_sync(struct file *file, void *fh, int *i) { int unused; if (*i < 0 || *i >= gbuffers) return -EINVAL; mutex_lock(&meye.lock); switch (meye.grab_buffer[*i].state) { case MEYE_BUF_UNUSED: mutex_unlock(&meye.lock); return -EINVAL; case MEYE_BUF_USING: if (file->f_flags & O_NONBLOCK) { mutex_unlock(&meye.lock); return -EAGAIN; } if (wait_event_interruptible(meye.proc_list, (meye.grab_buffer[*i].state != MEYE_BUF_USING))) { mutex_unlock(&meye.lock); return -EINTR; } /* fall through */ case MEYE_BUF_DONE: meye.grab_buffer[*i].state = MEYE_BUF_UNUSED; if (kfifo_out_locked(&meye.doneq, (unsigned char *)&unused, sizeof(int), &meye.doneq_lock) != sizeof(int)) break; } *i = meye.grab_buffer[*i].size; mutex_unlock(&meye.lock); return 0; } static int meyeioc_stillcapt(void) { if (!meye.grab_fbuffer) return -EINVAL; if (meye.grab_buffer[0].state != MEYE_BUF_UNUSED) return -EBUSY; mutex_lock(&meye.lock); meye.grab_buffer[0].state = MEYE_BUF_USING; mchip_take_picture(); mchip_get_picture(meye.grab_fbuffer, mchip_hsize() * mchip_vsize() * 2); meye.grab_buffer[0].state = MEYE_BUF_DONE; mutex_unlock(&meye.lock); return 0; } static int meyeioc_stilljcapt(int *len) { if (!meye.grab_fbuffer) return -EINVAL; if (meye.grab_buffer[0].state != MEYE_BUF_UNUSED) return -EBUSY; mutex_lock(&meye.lock); meye.grab_buffer[0].state = MEYE_BUF_USING; *len = -1; while (*len == -1) { mchip_take_picture(); *len = mchip_compress_frame(meye.grab_fbuffer, gbufsize); } meye.grab_buffer[0].state = MEYE_BUF_DONE; mutex_unlock(&meye.lock); return 0; } static int vidioc_querycap(struct file *file, void *fh, struct v4l2_capability *cap) { strcpy(cap->driver, "meye"); strcpy(cap->card, "meye"); sprintf(cap->bus_info, "PCI:%s", pci_name(meye.mchip_dev)); cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; return 0; } static int vidioc_enum_input(struct file *file, void *fh, struct v4l2_input *i) { if (i->index != 0) return -EINVAL; strcpy(i->name, "Camera"); i->type = V4L2_INPUT_TYPE_CAMERA; return 0; } static int vidioc_g_input(struct file *file, void *fh, unsigned int *i) { *i = 0; return 0; } static int vidioc_s_input(struct file *file, void *fh, unsigned int i) { if (i != 0) return -EINVAL; return 0; } static int meye_s_ctrl(struct v4l2_ctrl *ctrl) { mutex_lock(&meye.lock); switch (ctrl->id) { case V4L2_CID_BRIGHTNESS: sony_pic_camera_command( SONY_PIC_COMMAND_SETCAMERABRIGHTNESS, ctrl->val); meye.brightness = ctrl->val << 10; break; case V4L2_CID_HUE: sony_pic_camera_command( SONY_PIC_COMMAND_SETCAMERAHUE, ctrl->val); meye.hue = ctrl->val << 10; break; case V4L2_CID_CONTRAST: sony_pic_camera_command( SONY_PIC_COMMAND_SETCAMERACONTRAST, ctrl->val); meye.contrast = ctrl->val << 10; break; case V4L2_CID_SATURATION: sony_pic_camera_command( SONY_PIC_COMMAND_SETCAMERACOLOR, ctrl->val); meye.colour = ctrl->val << 10; break; case V4L2_CID_MEYE_AGC: sony_pic_camera_command( SONY_PIC_COMMAND_SETCAMERAAGC, ctrl->val); meye.params.agc = ctrl->val; break; case V4L2_CID_SHARPNESS: sony_pic_camera_command( SONY_PIC_COMMAND_SETCAMERASHARPNESS, ctrl->val); meye.params.sharpness = ctrl->val; break; case V4L2_CID_MEYE_PICTURE: sony_pic_camera_command( SONY_PIC_COMMAND_SETCAMERAPICTURE, ctrl->val); meye.params.picture = ctrl->val; break; case V4L2_CID_JPEG_COMPRESSION_QUALITY: meye.params.quality = ctrl->val; break; case V4L2_CID_MEYE_FRAMERATE: meye.params.framerate = ctrl->val; break; default: mutex_unlock(&meye.lock); return -EINVAL; } mutex_unlock(&meye.lock); return 0; } static int vidioc_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *f) { if (f->index > 1) return -EINVAL; if (f->index == 0) { /* standard YUV 422 capture */ f->flags = 0; strcpy(f->description, "YUV422"); f->pixelformat = V4L2_PIX_FMT_YUYV; } else { /* compressed MJPEG capture */ f->flags = V4L2_FMT_FLAG_COMPRESSED; strcpy(f->description, "MJPEG"); f->pixelformat = V4L2_PIX_FMT_MJPEG; } return 0; } static int vidioc_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) { if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_YUYV && f->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG) return -EINVAL; if (f->fmt.pix.field != V4L2_FIELD_ANY && f->fmt.pix.field != V4L2_FIELD_NONE) return -EINVAL; f->fmt.pix.field = V4L2_FIELD_NONE; if (f->fmt.pix.width <= 320) { f->fmt.pix.width = 320; f->fmt.pix.height = 240; } else { f->fmt.pix.width = 640; f->fmt.pix.height = 480; } f->fmt.pix.bytesperline = f->fmt.pix.width * 2; f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; f->fmt.pix.colorspace = 0; return 0; } static int vidioc_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) { switch (meye.mchip_mode) { case MCHIP_HIC_MODE_CONT_OUT: default: f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; break; case MCHIP_HIC_MODE_CONT_COMP: f->fmt.pix.pixelformat = V4L2_PIX_FMT_MJPEG; break; } f->fmt.pix.field = V4L2_FIELD_NONE; f->fmt.pix.width = mchip_hsize(); f->fmt.pix.height = mchip_vsize(); f->fmt.pix.bytesperline = f->fmt.pix.width * 2; f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; return 0; } static int vidioc_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) { if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_YUYV && f->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG) return -EINVAL; if (f->fmt.pix.field != V4L2_FIELD_ANY && f->fmt.pix.field != V4L2_FIELD_NONE) return -EINVAL; f->fmt.pix.field = V4L2_FIELD_NONE; mutex_lock(&meye.lock); if (f->fmt.pix.width <= 320) { f->fmt.pix.width = 320; f->fmt.pix.height = 240; meye.params.subsample = 1; } else { f->fmt.pix.width = 640; f->fmt.pix.height = 480; meye.params.subsample = 0; } switch (f->fmt.pix.pixelformat) { case V4L2_PIX_FMT_YUYV: meye.mchip_mode = MCHIP_HIC_MODE_CONT_OUT; break; case V4L2_PIX_FMT_MJPEG: meye.mchip_mode = MCHIP_HIC_MODE_CONT_COMP; break; } mutex_unlock(&meye.lock); f->fmt.pix.bytesperline = f->fmt.pix.width * 2; f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; f->fmt.pix.colorspace = 0; return 0; } static int vidioc_reqbufs(struct file *file, void *fh, struct v4l2_requestbuffers *req) { int i; if (req->memory != V4L2_MEMORY_MMAP) return -EINVAL; if (meye.grab_fbuffer && req->count == gbuffers) { /* already allocated, no modifications */ return 0; } mutex_lock(&meye.lock); if (meye.grab_fbuffer) { for (i = 0; i < gbuffers; i++) if (meye.vma_use_count[i]) { mutex_unlock(&meye.lock); return -EINVAL; } rvfree(meye.grab_fbuffer, gbuffers * gbufsize); meye.grab_fbuffer = NULL; } gbuffers = max(2, min((int)req->count, MEYE_MAX_BUFNBRS)); req->count = gbuffers; meye.grab_fbuffer = rvmalloc(gbuffers * gbufsize); if (!meye.grab_fbuffer) { printk(KERN_ERR "meye: v4l framebuffer allocation failed\n"); mutex_unlock(&meye.lock); return -ENOMEM; } for (i = 0; i < gbuffers; i++) meye.vma_use_count[i] = 0; mutex_unlock(&meye.lock); return 0; } static int vidioc_querybuf(struct file *file, void *fh, struct v4l2_buffer *buf) { unsigned int index = buf->index; if (index >= gbuffers) return -EINVAL; buf->bytesused = meye.grab_buffer[index].size; buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; if (meye.grab_buffer[index].state == MEYE_BUF_USING) buf->flags |= V4L2_BUF_FLAG_QUEUED; if (meye.grab_buffer[index].state == MEYE_BUF_DONE) buf->flags |= V4L2_BUF_FLAG_DONE; buf->field = V4L2_FIELD_NONE; buf->timestamp = meye.grab_buffer[index].timestamp; buf->sequence = meye.grab_buffer[index].sequence; buf->memory = V4L2_MEMORY_MMAP; buf->m.offset = index * gbufsize; buf->length = gbufsize; return 0; } static int vidioc_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf) { if (buf->memory != V4L2_MEMORY_MMAP) return -EINVAL; if (buf->index >= gbuffers) return -EINVAL; if (meye.grab_buffer[buf->index].state != MEYE_BUF_UNUSED) return -EINVAL; mutex_lock(&meye.lock); buf->flags |= V4L2_BUF_FLAG_QUEUED; buf->flags &= ~V4L2_BUF_FLAG_DONE; meye.grab_buffer[buf->index].state = MEYE_BUF_USING; kfifo_in_locked(&meye.grabq, (unsigned char *)&buf->index, sizeof(int), &meye.grabq_lock); mutex_unlock(&meye.lock); return 0; } static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf) { int reqnr; if (buf->memory != V4L2_MEMORY_MMAP) return -EINVAL; mutex_lock(&meye.lock); if (kfifo_len(&meye.doneq) == 0 && file->f_flags & O_NONBLOCK) { mutex_unlock(&meye.lock); return -EAGAIN; } if (wait_event_interruptible(meye.proc_list, kfifo_len(&meye.doneq) != 0) < 0) { mutex_unlock(&meye.lock); return -EINTR; } if (!kfifo_out_locked(&meye.doneq, (unsigned char *)&reqnr, sizeof(int), &meye.doneq_lock)) { mutex_unlock(&meye.lock); return -EBUSY; } if (meye.grab_buffer[reqnr].state != MEYE_BUF_DONE) { mutex_unlock(&meye.lock); return -EINVAL; } buf->index = reqnr; buf->bytesused = meye.grab_buffer[reqnr].size; buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; buf->field = V4L2_FIELD_NONE; buf->timestamp = meye.grab_buffer[reqnr].timestamp; buf->sequence = meye.grab_buffer[reqnr].sequence; buf->memory = V4L2_MEMORY_MMAP; buf->m.offset = reqnr * gbufsize; buf->length = gbufsize; meye.grab_buffer[reqnr].state = MEYE_BUF_UNUSED; mutex_unlock(&meye.lock); return 0; } static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i) { mutex_lock(&meye.lock); switch (meye.mchip_mode) { case MCHIP_HIC_MODE_CONT_OUT: mchip_continuous_start(); break; case MCHIP_HIC_MODE_CONT_COMP: mchip_cont_compression_start(); break; default: mutex_unlock(&meye.lock); return -EINVAL; } mutex_unlock(&meye.lock); return 0; } static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i) { mutex_lock(&meye.lock); mchip_hic_stop(); kfifo_reset(&meye.grabq); kfifo_reset(&meye.doneq); for (i = 0; i < MEYE_MAX_BUFNBRS; i++) meye.grab_buffer[i].state = MEYE_BUF_UNUSED; mutex_unlock(&meye.lock); return 0; } static long vidioc_default(struct file *file, void *fh, bool valid_prio, unsigned int cmd, void *arg) { switch (cmd) { case MEYEIOC_G_PARAMS: return meyeioc_g_params((struct meye_params *) arg); case MEYEIOC_S_PARAMS: return meyeioc_s_params((struct meye_params *) arg); case MEYEIOC_QBUF_CAPT: return meyeioc_qbuf_capt((int *) arg); case MEYEIOC_SYNC: return meyeioc_sync(file, fh, (int *) arg); case MEYEIOC_STILLCAPT: return meyeioc_stillcapt(); case MEYEIOC_STILLJCAPT: return meyeioc_stilljcapt((int *) arg); default: return -ENOTTY; } } static __poll_t meye_poll(struct file *file, poll_table *wait) { __poll_t res = v4l2_ctrl_poll(file, wait); mutex_lock(&meye.lock); poll_wait(file, &meye.proc_list, wait); if (kfifo_len(&meye.doneq)) res |= EPOLLIN | EPOLLRDNORM; mutex_unlock(&meye.lock); return res; } static void meye_vm_open(struct vm_area_struct *vma) { long idx = (long)vma->vm_private_data; meye.vma_use_count[idx]++; } static void meye_vm_close(struct vm_area_struct *vma) { long idx = (long)vma->vm_private_data; meye.vma_use_count[idx]--; } static const struct vm_operations_struct meye_vm_ops = { .open = meye_vm_open, .close = meye_vm_close, }; static int meye_mmap(struct file *file, struct vm_area_struct *vma) { unsigned long start = vma->vm_start; unsigned long size = vma->vm_end - vma->vm_start; unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; unsigned long page, pos; mutex_lock(&meye.lock); if (size > gbuffers * gbufsize || offset > gbuffers * gbufsize - size) { mutex_unlock(&meye.lock); return -EINVAL; } if (!meye.grab_fbuffer) { int i; /* lazy allocation */ meye.grab_fbuffer = rvmalloc(gbuffers*gbufsize); if (!meye.grab_fbuffer) { printk(KERN_ERR "meye: v4l framebuffer allocation failed\n"); mutex_unlock(&meye.lock); return -ENOMEM; } for (i = 0; i < gbuffers; i++) meye.vma_use_count[i] = 0; } pos = (unsigned long)meye.grab_fbuffer + offset; while (size > 0) { page = vmalloc_to_pfn((void *)pos); if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) { mutex_unlock(&meye.lock); return -EAGAIN; } start += PAGE_SIZE; pos += PAGE_SIZE; if (size > PAGE_SIZE) size -= PAGE_SIZE; else size = 0; } vma->vm_ops = &meye_vm_ops; vma->vm_flags &= ~VM_IO; /* not I/O memory */ vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP; vma->vm_private_data = (void *) (offset / gbufsize); meye_vm_open(vma); mutex_unlock(&meye.lock); return 0; } static const struct v4l2_file_operations meye_fops = { .owner = THIS_MODULE, .open = meye_open, .release = meye_release, .mmap = meye_mmap, .unlocked_ioctl = video_ioctl2, .poll = meye_poll, }; static const struct v4l2_ioctl_ops meye_ioctl_ops = { .vidioc_querycap = vidioc_querycap, .vidioc_enum_input = vidioc_enum_input, .vidioc_g_input = vidioc_g_input, .vidioc_s_input = vidioc_s_input, .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, .vidioc_reqbufs = vidioc_reqbufs, .vidioc_querybuf = vidioc_querybuf, .vidioc_qbuf = vidioc_qbuf, .vidioc_dqbuf = vidioc_dqbuf, .vidioc_streamon = vidioc_streamon, .vidioc_streamoff = vidioc_streamoff, .vidioc_log_status = v4l2_ctrl_log_status, .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, .vidioc_unsubscribe_event = v4l2_event_unsubscribe, .vidioc_default = vidioc_default, }; static const struct video_device meye_template = { .name = "meye", .fops = &meye_fops, .ioctl_ops = &meye_ioctl_ops, .release = video_device_release_empty, }; static const struct v4l2_ctrl_ops meye_ctrl_ops = { .s_ctrl = meye_s_ctrl, }; #ifdef CONFIG_PM static int meye_suspend(struct pci_dev *pdev, pm_message_t state) { pci_save_state(pdev); meye.pm_mchip_mode = meye.mchip_mode; mchip_hic_stop(); mchip_set(MCHIP_MM_INTA, 0x0); return 0; } static int meye_resume(struct pci_dev *pdev) { pci_restore_state(pdev); pci_write_config_word(meye.mchip_dev, MCHIP_PCI_SOFTRESET_SET, 1); mchip_delay(MCHIP_HIC_CMD, 0); mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE); msleep(1); mchip_set(MCHIP_VRJ_SOFT_RESET, 1); msleep(1); mchip_set(MCHIP_MM_PCI_MODE, 5); msleep(1); mchip_set(MCHIP_MM_INTA, MCHIP_MM_INTA_HIC_1_MASK); switch (meye.pm_mchip_mode) { case MCHIP_HIC_MODE_CONT_OUT: mchip_continuous_start(); break; case MCHIP_HIC_MODE_CONT_COMP: mchip_cont_compression_start(); break; } return 0; } #endif static int meye_probe(struct pci_dev *pcidev, const struct pci_device_id *ent) { static const struct v4l2_ctrl_config ctrl_agc = { .id = V4L2_CID_MEYE_AGC, .type = V4L2_CTRL_TYPE_INTEGER, .ops = &meye_ctrl_ops, .name = "AGC", .max = 63, .step = 1, .def = 48, .flags = V4L2_CTRL_FLAG_SLIDER, }; static const struct v4l2_ctrl_config ctrl_picture = { .id = V4L2_CID_MEYE_PICTURE, .type = V4L2_CTRL_TYPE_INTEGER, .ops = &meye_ctrl_ops, .name = "Picture", .max = 63, .step = 1, }; static const struct v4l2_ctrl_config ctrl_framerate = { .id = V4L2_CID_MEYE_FRAMERATE, .type = V4L2_CTRL_TYPE_INTEGER, .ops = &meye_ctrl_ops, .name = "Framerate", .max = 31, .step = 1, }; struct v4l2_device *v4l2_dev = &meye.v4l2_dev; int ret = -EBUSY; unsigned long mchip_adr; if (meye.mchip_dev != NULL) { printk(KERN_ERR "meye: only one device allowed!\n"); return ret; } ret = v4l2_device_register(&pcidev->dev, v4l2_dev); if (ret < 0) { v4l2_err(v4l2_dev, "Could not register v4l2_device\n"); return ret; } ret = -ENOMEM; meye.mchip_dev = pcidev; meye.grab_temp = vmalloc(array_size(PAGE_SIZE, MCHIP_NB_PAGES_MJPEG)); if (!meye.grab_temp) goto outvmalloc; spin_lock_init(&meye.grabq_lock); if (kfifo_alloc(&meye.grabq, sizeof(int) * MEYE_MAX_BUFNBRS, GFP_KERNEL)) goto outkfifoalloc1; spin_lock_init(&meye.doneq_lock); if (kfifo_alloc(&meye.doneq, sizeof(int) * MEYE_MAX_BUFNBRS, GFP_KERNEL)) goto outkfifoalloc2; meye.vdev = meye_template; meye.vdev.v4l2_dev = &meye.v4l2_dev; ret = sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERA, 1); if (ret) { v4l2_err(v4l2_dev, "meye: unable to power on the camera\n"); v4l2_err(v4l2_dev, "meye: did you enable the camera in sonypi using the module options ?\n"); goto outsonypienable; } ret = pci_enable_device(meye.mchip_dev); if (ret) { v4l2_err(v4l2_dev, "meye: pci_enable_device failed\n"); goto outenabledev; } ret = -EIO; mchip_adr = pci_resource_start(meye.mchip_dev,0); if (!mchip_adr) { v4l2_err(v4l2_dev, "meye: mchip has no device base address\n"); goto outregions; } if (!request_mem_region(pci_resource_start(meye.mchip_dev, 0), pci_resource_len(meye.mchip_dev, 0), "meye")) { v4l2_err(v4l2_dev, "meye: request_mem_region failed\n"); goto outregions; } meye.mchip_mmregs = ioremap(mchip_adr, MCHIP_MM_REGS); if (!meye.mchip_mmregs) { v4l2_err(v4l2_dev, "meye: ioremap failed\n"); goto outremap; } meye.mchip_irq = pcidev->irq; if (request_irq(meye.mchip_irq, meye_irq, IRQF_SHARED, "meye", meye_irq)) { v4l2_err(v4l2_dev, "request_irq failed\n"); goto outreqirq; } pci_write_config_byte(meye.mchip_dev, PCI_CACHE_LINE_SIZE, 8); pci_write_config_byte(meye.mchip_dev, PCI_LATENCY_TIMER, 64); pci_set_master(meye.mchip_dev); /* Ask the camera to perform a soft reset. */ pci_write_config_word(meye.mchip_dev, MCHIP_PCI_SOFTRESET_SET, 1); mchip_delay(MCHIP_HIC_CMD, 0); mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE); msleep(1); mchip_set(MCHIP_VRJ_SOFT_RESET, 1); msleep(1); mchip_set(MCHIP_MM_PCI_MODE, 5); msleep(1); mchip_set(MCHIP_MM_INTA, MCHIP_MM_INTA_HIC_1_MASK); mutex_init(&meye.lock); init_waitqueue_head(&meye.proc_list); v4l2_ctrl_handler_init(&meye.hdl, 3); v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops, V4L2_CID_BRIGHTNESS, 0, 63, 1, 32); v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops, V4L2_CID_HUE, 0, 63, 1, 32); v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops, V4L2_CID_CONTRAST, 0, 63, 1, 32); v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops, V4L2_CID_SATURATION, 0, 63, 1, 32); v4l2_ctrl_new_custom(&meye.hdl, &ctrl_agc, NULL); v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops, V4L2_CID_SHARPNESS, 0, 63, 1, 32); v4l2_ctrl_new_custom(&meye.hdl, &ctrl_picture, NULL); v4l2_ctrl_new_std(&meye.hdl, &meye_ctrl_ops, V4L2_CID_JPEG_COMPRESSION_QUALITY, 0, 10, 1, 8); v4l2_ctrl_new_custom(&meye.hdl, &ctrl_framerate, NULL); if (meye.hdl.error) { v4l2_err(v4l2_dev, "couldn't register controls\n"); goto outvideoreg; } v4l2_ctrl_handler_setup(&meye.hdl); meye.vdev.ctrl_handler = &meye.hdl; if (video_register_device(&meye.vdev, VFL_TYPE_GRABBER, video_nr) < 0) { v4l2_err(v4l2_dev, "video_register_device failed\n"); goto outvideoreg; } v4l2_info(v4l2_dev, "Motion Eye Camera Driver v%s.\n", MEYE_DRIVER_VERSION); v4l2_info(v4l2_dev, "mchip KL5A72002 rev. %d, base %lx, irq %d\n", meye.mchip_dev->revision, mchip_adr, meye.mchip_irq); return 0; outvideoreg: v4l2_ctrl_handler_free(&meye.hdl); free_irq(meye.mchip_irq, meye_irq); outreqirq: iounmap(meye.mchip_mmregs); outremap: release_mem_region(pci_resource_start(meye.mchip_dev, 0), pci_resource_len(meye.mchip_dev, 0)); outregions: pci_disable_device(meye.mchip_dev); outenabledev: sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERA, 0); outsonypienable: kfifo_free(&meye.doneq); outkfifoalloc2: kfifo_free(&meye.grabq); outkfifoalloc1: vfree(meye.grab_temp); outvmalloc: return ret; } static void meye_remove(struct pci_dev *pcidev) { video_unregister_device(&meye.vdev); mchip_hic_stop(); mchip_dma_free(); /* disable interrupts */ mchip_set(MCHIP_MM_INTA, 0x0); free_irq(meye.mchip_irq, meye_irq); iounmap(meye.mchip_mmregs); release_mem_region(pci_resource_start(meye.mchip_dev, 0), pci_resource_len(meye.mchip_dev, 0)); pci_disable_device(meye.mchip_dev); sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERA, 0); kfifo_free(&meye.doneq); kfifo_free(&meye.grabq); vfree(meye.grab_temp); if (meye.grab_fbuffer) { rvfree(meye.grab_fbuffer, gbuffers*gbufsize); meye.grab_fbuffer = NULL; } printk(KERN_INFO "meye: removed\n"); } static const struct pci_device_id meye_pci_tbl[] = { { PCI_VDEVICE(KAWASAKI, PCI_DEVICE_ID_MCHIP_KL5A72002), 0 }, { } }; MODULE_DEVICE_TABLE(pci, meye_pci_tbl); static struct pci_driver meye_driver = { .name = "meye", .id_table = meye_pci_tbl, .probe = meye_probe, .remove = meye_remove, #ifdef CONFIG_PM .suspend = meye_suspend, .resume = meye_resume, #endif }; static int __init meye_init(void) { gbuffers = max(2, min((int)gbuffers, MEYE_MAX_BUFNBRS)); if (gbufsize > MEYE_MAX_BUFSIZE) gbufsize = MEYE_MAX_BUFSIZE; gbufsize = PAGE_ALIGN(gbufsize); printk(KERN_INFO "meye: using %d buffers with %dk (%dk total) for capture\n", gbuffers, gbufsize / 1024, gbuffers * gbufsize / 1024); return pci_register_driver(&meye_driver); } static void __exit meye_exit(void) { pci_unregister_driver(&meye_driver); } module_init(meye_init); module_exit(meye_exit);