/* * Motion Eye video4linux driver for Sony Vaio PictureBook * * Copyright (C) 2001 Stelian Pop , 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include #include #include #include #include #include #include #include #include #include #include #include #include "meye.h" #include "linux/meye.h" /* driver structure - only one possible */ static struct meye meye; /* number of grab buffers */ static unsigned int gbuffers = 2; /* size of a grab buffer */ static unsigned int gbufsize = MEYE_MAX_BUFSIZE; /* /dev/videoX registration number */ static int video_nr = -1; /****************************************************************************/ /* Queue routines */ /****************************************************************************/ /* Inits the queue */ static inline void meye_initq(struct meye_queue *queue) { queue->head = queue->tail = 0; queue->len = 0; queue->s_lock = (spinlock_t)SPIN_LOCK_UNLOCKED; init_waitqueue_head(&queue->proc_list); } /* Pulls an element from the queue */ static inline int meye_pullq(struct meye_queue *queue) { int result; unsigned long flags; spin_lock_irqsave(&queue->s_lock, flags); if (!queue->len) { spin_unlock_irqrestore(&queue->s_lock, flags); return -1; } result = queue->buf[queue->head]; queue->head++; queue->head &= (MEYE_QUEUE_SIZE - 1); queue->len--; spin_unlock_irqrestore(&queue->s_lock, flags); return result; } /* Pushes an element into the queue */ static inline void meye_pushq(struct meye_queue *queue, int element) { unsigned long flags; spin_lock_irqsave(&queue->s_lock, flags); if (queue->len == MEYE_QUEUE_SIZE) { /* remove the first element */ queue->head++; queue->head &= (MEYE_QUEUE_SIZE - 1); queue->len--; } queue->buf[queue->tail] = element; queue->tail++; queue->tail &= (MEYE_QUEUE_SIZE - 1); queue->len++; spin_unlock_irqrestore(&queue->s_lock, flags); } /* Tests if the queue is empty */ static inline int meye_emptyq(struct meye_queue *queue, int *elem) { int result; unsigned long flags; spin_lock_irqsave(&queue->s_lock, flags); result = (queue->len == 0); if (!result && elem) *elem = queue->buf[queue->head]; spin_unlock_irqrestore(&queue->s_lock, flags); return result; } /****************************************************************************/ /* Memory allocation routines (stolen from bttv-driver.c) */ /****************************************************************************/ #define MDEBUG(x) do {} while (0) /* #define MDEBUG(x) x */ /* Given PGD from the address space's page table, return the kernel * virtual mapping of the physical memory mapped at ADR. */ static inline unsigned long uvirt_to_kva(pgd_t *pgd, unsigned long adr) { unsigned long ret = 0UL; pmd_t *pmd; pte_t *ptep, pte; if (!pgd_none(*pgd)) { pmd = pmd_offset(pgd, adr); if (!pmd_none(*pmd)) { ptep = pte_offset(pmd, adr); pte = *ptep; if(pte_present(pte)) { ret = (unsigned long)page_address(pte_page(pte)); ret |= (adr & (PAGE_SIZE - 1)); } } } MDEBUG(printk("uv2kva(%lx-->%lx)\n", adr, ret)); return ret; } static inline unsigned long uvirt_to_bus(unsigned long adr) { unsigned long kva, ret; kva = uvirt_to_kva(pgd_offset(current->mm, adr), adr); ret = virt_to_bus((void *)kva); MDEBUG(printk("uv2b(%lx-->%lx)\n", adr, ret)); return ret; } static inline unsigned long kvirt_to_bus(unsigned long adr) { unsigned long va, kva, ret; va = VMALLOC_VMADDR(adr); kva = uvirt_to_kva(pgd_offset_k(va), va); ret = virt_to_bus((void *)kva); MDEBUG(printk("kv2b(%lx-->%lx)\n", adr, ret)); return ret; } /* Here we want the physical address of the memory. * This is used when initializing the contents of the * area and marking the pages as reserved. */ static inline unsigned long kvirt_to_pa(unsigned long adr) { unsigned long va, kva, ret; va = VMALLOC_VMADDR(adr); kva = uvirt_to_kva(pgd_offset_k(va), va); ret = __pa(kva); MDEBUG(printk("kv2pa(%lx-->%lx)\n", adr, ret)); return ret; } static void *rvmalloc(signed long size) { void *mem; unsigned long adr, page; mem = vmalloc_32(size); if (mem) { memset(mem, 0, size); /* Clear the ram out, no junk to the user */ adr = (unsigned long)mem; while (size > 0) { page = kvirt_to_pa(adr); mem_map_reserve(virt_to_page(__va(page))); adr += PAGE_SIZE; size -= PAGE_SIZE; } } return mem; } static void rvfree(void * mem, signed long size) { unsigned long adr, page; if (mem) { adr = (unsigned long) mem; while (size > 0) { page = kvirt_to_pa(adr); mem_map_unreserve(virt_to_page(__va(page))); adr += PAGE_SIZE; size -= PAGE_SIZE; } vfree(mem); } } /* return a page table pointing to N pages of locked memory */ static void *ptable_alloc(int npages, u32 *pt_addr) { int i; void *vmem; u32 *ptable; unsigned long adr; vmem = rvmalloc((npages + 1) * PAGE_SIZE); if (!vmem) return NULL; adr = (unsigned long)vmem; ptable = (u32 *)(vmem + npages * PAGE_SIZE); for (i = 0; i < npages; i++) { ptable[i] = (u32) kvirt_to_bus(adr); adr += PAGE_SIZE; } *pt_addr = (u32) kvirt_to_bus(adr); return vmem; } static void ptable_free(void *vmem, int npages) { rvfree(vmem, (npages + 1) * 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 *size, int quality) { static u16 tables0[] = { 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, }; static u16 tables1[] = { 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, }; static u16 tables2[] = { 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, }; static u16 tables3[] = { 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, }; static u16 tables4[] = { 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, }; static u16 tables5[] = { 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, }; static u16 tables6[] = { 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, }; static u16 tables7[] = { 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, }; static u16 tables8[] = { 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, }; static u16 tables9[] = { 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, }; static u16 tables10[] = { 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, }; switch (quality) { case 0: *size = sizeof(tables0); return tables0; case 1: *size = sizeof(tables1); return tables1; case 2: *size = sizeof(tables2); return tables2; case 3: *size = sizeof(tables3); return tables3; case 4: *size = sizeof(tables4); return tables4; case 5: *size = sizeof(tables5); return tables5; case 6: *size = sizeof(tables6); return tables6; case 7: *size = sizeof(tables7); return tables7; case 8: *size = sizeof(tables8); return tables8; case 9: *size = sizeof(tables9); return tables9; case 10: *size = sizeof(tables10); return tables10; default: printk(KERN_WARNING "meye: invalid quality level %d - using 8\n", quality); *size = sizeof(tables8); return tables8; } return NULL; } /* return a generic set of huffman tables */ static u16 *jpeg_huffman_tables(int *size) { 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 }; *size = sizeof(tables); return tables; } /****************************************************************************/ /* MCHIP low-level functions */ /****************************************************************************/ /* waits for the specified miliseconds */ static inline void wait_ms(unsigned int ms) { if (!in_interrupt()) { set_current_state(TASK_UNINTERRUPTIBLE); schedule_timeout(1 + ms * HZ / 1000); } else mdelay(ms); } /* 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 size; u16 *tables; tables = jpeg_huffman_tables(&size); for (i = 0; i < size / 2; i++) writel(tables[i], meye.mchip_mmregs + MCHIP_VRJ_TABLE_DATA); tables = jpeg_quantisation_tables(&size, meye.params.quality); for (i = 0; i < size / 2; 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(); } /* setup for DMA transfers - also zeros the framebuffer */ static int mchip_dma_alloc(void) { if (!meye.mchip_fbuffer) { meye.mchip_fbuffer = ptable_alloc(MCHIP_NB_PAGES, &meye.mchip_ptaddr); if (!meye.mchip_fbuffer) return -1; } return 0; } /* frees the DMA buffer */ static void mchip_dma_free(void) { if (meye.mchip_fbuffer) { ptable_free(meye.mchip_fbuffer, MCHIP_NB_PAGES); meye.mchip_fbuffer = 0; meye.mchip_ptaddr = 0; } } /* sets the DMA parameters into the chip */ static void mchip_dma_setup(void) { int i; mchip_set(MCHIP_MM_PT_ADDR, meye.mchip_ptaddr); for (i = 0; i < 4; i++) mchip_set(MCHIP_MM_FIR(i), 0); meye.mchip_fnum = 0; } /* 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 = 0; meye.mchip_mode = MCHIP_HIC_MODE_NOOP; if (!(mchip_read(MCHIP_HIC_STATUS) & MCHIP_HIC_STATUS_BUSY)) return; mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_STOP); mchip_delay(MCHIP_HIC_CMD, 0); while (!mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE)) { /* resetting HIC */ mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_STOP); mchip_delay(MCHIP_HIC_CMD, 0); mchip_set(MCHIP_HIC_CTL, MCHIP_HIC_CTL_SOFT_RESET); wait_ms(250); if (i++ > 20) { printk(KERN_ERR "meye: resetting HIC hanged!\n"); break; } } wait_ms(100); } /****************************************************************************/ /* MCHIP frame processing functions */ /****************************************************************************/ /* get the next ready frame from the dma engine */ static u32 mchip_get_frame(void) { u32 v; v = mchip_read(MCHIP_MM_FIR(meye.mchip_fnum)); return v; } /* 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; int avail; pt_id = (v >> 17) & 0x3FF; avail = MCHIP_NB_PAGES - pt_id; if (size > avail*PAGE_SIZE) { memcpy(buf, meye.mchip_fbuffer + pt_id * PAGE_SIZE, avail * PAGE_SIZE); memcpy(buf +avail * PAGE_SIZE, meye.mchip_fbuffer, size - avail * PAGE_SIZE); } else memcpy(buf, meye.mchip_fbuffer + pt_id * PAGE_SIZE, size); } /* 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, fsize2; 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; fsize2 = pt_end * PAGE_SIZE + trailer * 4; if (fsize + fsize2 > size) { printk(KERN_WARNING "meye: oversized compressed frame %d %d\n", fsize, fsize2); return -1; } else { memcpy(buf, meye.mchip_fbuffer + pt_start * PAGE_SIZE, fsize); memcpy(buf + fsize, meye.mchip_fbuffer, fsize2); fsize += fsize2; } } 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; } else memcpy(buf, meye.mchip_fbuffer + pt_start * PAGE_SIZE, fsize); } #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(); 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; wait_ms(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; wait_ms(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_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; wait_ms(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_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 void meye_irq(int irq, void *dev_id, struct pt_regs *regs) { u32 v; int reqnr; v = mchip_read(MCHIP_MM_INTA); while (1) { v = mchip_get_frame(); if (!(v & MCHIP_MM_FIR_RDY)) goto out; switch (meye.mchip_mode) { case MCHIP_HIC_MODE_CONT_OUT: if (!meye_emptyq(&meye.grabq, NULL)) { int nr = meye_pullq(&meye.grabq); mchip_cont_read_frame( v, meye.grab_fbuffer + gbufsize * nr, mchip_hsize() * mchip_vsize() * 2); meye.grab_buffer[nr].state = MEYE_BUF_DONE; wake_up_interruptible(&meye.grabq.proc_list); } break; case MCHIP_HIC_MODE_CONT_COMP: if (!meye_emptyq(&meye.grabq, &reqnr)) { int size; size = mchip_comp_read_frame( v, meye.grab_fbuffer + gbufsize * reqnr, gbufsize); if (size == -1) break; reqnr = meye_pullq(&meye.grabq); meye.grab_buffer[reqnr].size = size; meye.grab_buffer[reqnr].state = MEYE_BUF_DONE; wake_up_interruptible(&meye.grabq.proc_list); } break; default: /* do not free frame, since it can be a snap */ goto out; } /* switch */ mchip_free_frame(); } out: } /****************************************************************************/ /* video4linux integration */ /****************************************************************************/ static int meye_open(struct video_device *dev, int flags) { int i; down(&meye.lock); if (meye.open_count) { up(&meye.lock); return -EBUSY; } meye.open_count++; if (mchip_dma_alloc()) { printk(KERN_ERR "meye: mchip framebuffer allocation failed\n"); up(&meye.lock); return -ENOBUFS; } mchip_hic_stop(); meye_initq(&meye.grabq); for (i = 0; i < MEYE_MAX_BUFNBRS; i++) meye.grab_buffer[i].state = MEYE_BUF_UNUSED; up(&meye.lock); return 0; } static void meye_close(struct video_device *dev) { down(&meye.lock); meye.open_count--; mchip_hic_stop(); up(&meye.lock); } static int meye_ioctl(struct video_device *dev, unsigned int cmd, void *arg) { switch (cmd) { case VIDIOCGCAP: { struct video_capability b; strcpy(b.name,meye.video_dev.name); b.type = VID_TYPE_CAPTURE; b.channels = 1; b.audios = 0; b.maxwidth = 640; b.maxheight = 480; b.minwidth = 320; b.minheight = 240; if(copy_to_user(arg,&b,sizeof(b))) return -EFAULT; break; } case VIDIOCGCHAN: { struct video_channel v; if(copy_from_user(&v, arg,sizeof(v))) return -EFAULT; v.flags = 0; v.tuners = 0; v.type = VIDEO_TYPE_CAMERA; if (v.channel != 0) return -EINVAL; strcpy(v.name,"Camera"); if(copy_to_user(arg,&v,sizeof(v))) return -EFAULT; break; } case VIDIOCSCHAN: { struct video_channel v; if(copy_from_user(&v, arg,sizeof(v))) return -EFAULT; if (v.channel != 0) return -EINVAL; break; } case VIDIOCGPICT: { struct video_picture p = meye.picture; if(copy_to_user(arg, &p, sizeof(p))) return -EFAULT; break; } case VIDIOCSPICT: { struct video_picture p; if(copy_from_user(&p, arg,sizeof(p))) return -EFAULT; if (p.depth != 2) return -EINVAL; if (p.palette != VIDEO_PALETTE_YUV422) return -EINVAL; down(&meye.lock); sonypi_camera_command(SONYPI_COMMAND_SETCAMERABRIGHTNESS, p.brightness >> 10); sonypi_camera_command(SONYPI_COMMAND_SETCAMERAHUE, p.hue >> 10); sonypi_camera_command(SONYPI_COMMAND_SETCAMERACOLOR, p.colour >> 10); sonypi_camera_command(SONYPI_COMMAND_SETCAMERACONTRAST, p.contrast >> 10); memcpy(&meye.picture, &p, sizeof(p)); up(&meye.lock); break; } case VIDIOCSYNC: { int i; DECLARE_WAITQUEUE(wait, current); if(copy_from_user((void *)&i,arg,sizeof(int))) return -EFAULT; if (i < 0 || i >= gbuffers) return -EINVAL; switch (meye.grab_buffer[i].state) { case MEYE_BUF_UNUSED: return -EINVAL; case MEYE_BUF_USING: add_wait_queue(&meye.grabq.proc_list, &wait); current->state = TASK_INTERRUPTIBLE; while (meye.grab_buffer[i].state == MEYE_BUF_USING) { schedule(); if(signal_pending(current)) { remove_wait_queue(&meye.grabq.proc_list, &wait); current->state = TASK_RUNNING; return -EINTR; } } remove_wait_queue(&meye.grabq.proc_list, &wait); current->state = TASK_RUNNING; /* fall through */ case MEYE_BUF_DONE: meye.grab_buffer[i].state = MEYE_BUF_UNUSED; } break; } case VIDIOCMCAPTURE: { struct video_mmap vm; int restart = 0; if(copy_from_user((void *) &vm, (void *) arg, sizeof(vm))) return -EFAULT; if (vm.frame >= gbuffers || vm.frame < 0) return -EINVAL; if (vm.format != VIDEO_PALETTE_YUV422) return -EINVAL; if (vm.height * vm.width * 2 > gbufsize) return -EINVAL; if (!meye.grab_fbuffer) return -EINVAL; if (meye.grab_buffer[vm.frame].state != MEYE_BUF_UNUSED) return -EBUSY; down(&meye.lock); if (vm.width == 640 && vm.height == 480) { if (meye.params.subsample) { meye.params.subsample = 0; restart = 1; } } else if (vm.width == 320 && vm.height == 240) { if (!meye.params.subsample) { meye.params.subsample = 1; restart = 1; } } else { up(&meye.lock); return -EINVAL; } if (restart || meye.mchip_mode != MCHIP_HIC_MODE_CONT_OUT) mchip_continuous_start(); meye.grab_buffer[vm.frame].state = MEYE_BUF_USING; meye_pushq(&meye.grabq, vm.frame); up(&meye.lock); break; } case VIDIOCGMBUF: { struct video_mbuf vm; int i; memset(&vm, 0 , sizeof(vm)); vm.size = gbufsize * gbuffers; vm.frames = gbuffers; for (i = 0; i < gbuffers; i++) vm.offsets[i] = i * gbufsize; if(copy_to_user((void *)arg, (void *)&vm, sizeof(vm))) return -EFAULT; break; } case MEYEIOC_G_PARAMS: { if (copy_to_user(arg, &meye.params, sizeof(meye.params))) return -EFAULT; break; } case MEYEIOC_S_PARAMS: { struct meye_params jp; if (copy_from_user(&jp, arg, sizeof(jp))) return -EFAULT; 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; down(&meye.lock); if (meye.params.subsample != jp.subsample || meye.params.quality != jp.quality) mchip_hic_stop(); /* need restart */ memcpy(&meye.params, &jp, sizeof(jp)); sonypi_camera_command(SONYPI_COMMAND_SETCAMERASHARPNESS, meye.params.sharpness); sonypi_camera_command(SONYPI_COMMAND_SETCAMERAAGC, meye.params.agc); sonypi_camera_command(SONYPI_COMMAND_SETCAMERAPICTURE, meye.params.picture); up(&meye.lock); break; } case MEYEIOC_QBUF_CAPT: { int nb; if (copy_from_user((void *) &nb, (void *) arg, sizeof(int))) return -EFAULT; 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; down(&meye.lock); if (meye.mchip_mode != MCHIP_HIC_MODE_CONT_COMP) mchip_cont_compression_start(); meye.grab_buffer[nb].state = MEYE_BUF_USING; meye_pushq(&meye.grabq, nb); up(&meye.lock); break; } case MEYEIOC_SYNC: { int i; DECLARE_WAITQUEUE(wait, current); if(copy_from_user((void *)&i,arg,sizeof(int))) return -EFAULT; if (i < 0 || i >= gbuffers) return -EINVAL; switch (meye.grab_buffer[i].state) { case MEYE_BUF_UNUSED: return -EINVAL; case MEYE_BUF_USING: add_wait_queue(&meye.grabq.proc_list, &wait); current->state = TASK_INTERRUPTIBLE; while (meye.grab_buffer[i].state == MEYE_BUF_USING) { schedule(); if(signal_pending(current)) { remove_wait_queue(&meye.grabq.proc_list, &wait); current->state = TASK_RUNNING; return -EINTR; } } remove_wait_queue(&meye.grabq.proc_list, &wait); current->state = TASK_RUNNING; /* fall through */ case MEYE_BUF_DONE: meye.grab_buffer[i].state = MEYE_BUF_UNUSED; } i = meye.grab_buffer[i].size; if (copy_to_user(arg, (void *)&i, sizeof(int))) return -EFAULT; break; } case MEYEIOC_STILLCAPT: { if (!meye.grab_fbuffer) return -EINVAL; if (meye.grab_buffer[0].state != MEYE_BUF_UNUSED) return -EBUSY; down(&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; up(&meye.lock); break; } case MEYEIOC_STILLJCAPT: { int len = -1; if (!meye.grab_fbuffer) return -EINVAL; if (meye.grab_buffer[0].state != MEYE_BUF_UNUSED) return -EBUSY; down(&meye.lock); meye.grab_buffer[0].state = MEYE_BUF_USING; while (len == -1) { mchip_take_picture(); len = mchip_compress_frame(meye.grab_fbuffer, gbufsize); } meye.grab_buffer[0].state = MEYE_BUF_DONE; up(&meye.lock); if (copy_to_user(arg, (void *)&len, sizeof(int))) return -EFAULT; break; } default: return -ENOIOCTLCMD; } /* switch */ return 0; } static int meye_mmap(struct video_device *dev, const char *adr, unsigned long size) { unsigned long start=(unsigned long) adr; unsigned long page,pos; down(&meye.lock); if (size > gbuffers * gbufsize) { up(&meye.lock); return -EINVAL; } if (!meye.grab_fbuffer) { /* lazy allocation */ meye.grab_fbuffer = rvmalloc(gbuffers*gbufsize); if (!meye.grab_fbuffer) { printk(KERN_ERR "meye: v4l framebuffer allocation failed\n"); up(&meye.lock); return -ENOMEM; } } pos = (unsigned long)meye.grab_fbuffer; while (size > 0) { page = kvirt_to_pa(pos); if (remap_page_range(start, page, PAGE_SIZE, PAGE_SHARED)) { up(&meye.lock); return -EAGAIN; } start += PAGE_SIZE; pos += PAGE_SIZE; size -= PAGE_SIZE; } up(&meye.lock); return 0; } static struct video_device meye_template = { owner: THIS_MODULE, name: "meye", type: VID_TYPE_CAPTURE, hardware: VID_HARDWARE_MEYE, open: meye_open, close: meye_close, ioctl: meye_ioctl, mmap: meye_mmap, }; static int __devinit meye_probe(struct pci_dev *pcidev, const struct pci_device_id *ent) { int ret; unsigned long mchip_adr; u8 revision; if (meye.mchip_dev != NULL) { printk(KERN_ERR "meye: only one device allowed!\n"); ret = -EBUSY; goto out1; } sonypi_camera_command(SONYPI_COMMAND_SETCAMERA, 1); meye.mchip_dev = pcidev; meye.mchip_irq = pcidev->irq; memcpy(&meye.video_dev, &meye_template, sizeof(meye_template)); if (mchip_dma_alloc()) { printk(KERN_ERR "meye: mchip framebuffer allocation failed\n"); ret = -ENOMEM; goto out2; } if ((ret = pci_enable_device(meye.mchip_dev))) { printk(KERN_ERR "meye: pci_enable_device failed\n"); goto out3; } mchip_adr = pci_resource_start(meye.mchip_dev,0); if (!mchip_adr) { printk(KERN_ERR "meye: mchip has no device base address\n"); ret = -EIO; goto out4; } if (!request_mem_region(pci_resource_start(meye.mchip_dev, 0), pci_resource_len(meye.mchip_dev, 0), "meye")) { ret = -EIO; printk(KERN_ERR "meye: request_mem_region failed\n"); goto out4; } pci_read_config_byte(meye.mchip_dev, PCI_REVISION_ID, &revision); pci_set_master(meye.mchip_dev); pci_write_config_byte(meye.mchip_dev, PCI_CACHE_LINE_SIZE, 8); pci_write_config_byte(meye.mchip_dev, PCI_LATENCY_TIMER, 64); if ((ret = request_irq(meye.mchip_irq, meye_irq, SA_INTERRUPT | SA_SHIRQ, "meye", meye_irq))) { printk(KERN_ERR "meye: request_irq failed (ret=%d)\n", ret); goto out5; } meye.mchip_mmregs = ioremap(mchip_adr, MCHIP_MM_REGS); if (!meye.mchip_mmregs) { printk(KERN_ERR "meye: ioremap failed\n"); ret = -EIO; goto out6; } /* 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); wait_ms(1); mchip_set(MCHIP_VRJ_SOFT_RESET, 1); wait_ms(1); mchip_set(MCHIP_MM_PCI_MODE, 5); wait_ms(1); mchip_set(MCHIP_MM_INTA, MCHIP_MM_INTA_HIC_1_MASK); if (video_register_device(&meye.video_dev, VFL_TYPE_GRABBER, video_nr) < 0) { printk(KERN_ERR "meye: video_register_device failed\n"); ret = -EIO; goto out7; } printk(KERN_INFO "meye: Motion Eye Camera Driver v%d.%d.\n", MEYE_DRIVER_MAJORVERSION, MEYE_DRIVER_MINORVERSION); printk(KERN_INFO "meye: mchip KL5A72002 rev. %d, base %lx, irq %d\n", revision, mchip_adr, meye.mchip_irq); /* init all fields */ init_MUTEX(&meye.lock); meye.picture.depth = 2; meye.picture.palette = VIDEO_PALETTE_YUV422; meye.picture.brightness = 32 << 10; meye.picture.hue = 32 << 10; meye.picture.colour = 32 << 10; meye.picture.contrast = 32 << 10; meye.picture.whiteness = 0; meye.params.subsample = 0; meye.params.quality = 7; meye.params.sharpness = 32; meye.params.agc = 48; meye.params.picture = 0; meye.params.framerate = 0; sonypi_camera_command(SONYPI_COMMAND_SETCAMERABRIGHTNESS, 32); sonypi_camera_command(SONYPI_COMMAND_SETCAMERAHUE, 32); sonypi_camera_command(SONYPI_COMMAND_SETCAMERACOLOR, 32); sonypi_camera_command(SONYPI_COMMAND_SETCAMERACONTRAST, 32); sonypi_camera_command(SONYPI_COMMAND_SETCAMERASHARPNESS, 32); sonypi_camera_command(SONYPI_COMMAND_SETCAMERAPICTURE, 0); sonypi_camera_command(SONYPI_COMMAND_SETCAMERAAGC, 48); return 0; out7: iounmap(meye.mchip_mmregs); out6: free_irq(meye.mchip_irq, meye_irq); out5: release_mem_region(pci_resource_start(meye.mchip_dev, 0), pci_resource_len(meye.mchip_dev, 0)); out4: pci_disable_device(meye.mchip_dev); out3: mchip_dma_free(); out2: sonypi_camera_command(SONYPI_COMMAND_SETCAMERA, 0); out1: return ret; } static void __devexit meye_remove(struct pci_dev *pcidev) { video_unregister_device(&meye.video_dev); mchip_hic_stop(); /* 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); mchip_dma_free(); if (meye.grab_fbuffer) rvfree(meye.grab_fbuffer, gbuffers*gbufsize); sonypi_camera_command(SONYPI_COMMAND_SETCAMERA, 0); printk(KERN_INFO "meye: removed\n"); } static struct pci_device_id meye_pci_tbl[] __devinitdata = { { PCI_VENDOR_ID_KAWASAKI, PCI_DEVICE_ID_MCHIP_KL5A72002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 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: __devexit_p(meye_remove), }; static int __init meye_init_module(void) { if (gbuffers < 2) gbuffers = 2; if (gbuffers > MEYE_MAX_BUFNBRS) gbuffers = MEYE_MAX_BUFNBRS; if (gbufsize < 0 || gbufsize > MEYE_MAX_BUFSIZE) gbufsize = MEYE_MAX_BUFSIZE; printk(KERN_INFO "meye: using %d buffers with %dk (%dk total) for capture\n", gbuffers, gbufsize/1024, gbuffers*gbufsize/1024); return pci_module_init(&meye_driver); } static void __exit meye_cleanup_module(void) { pci_unregister_driver(&meye_driver); } MODULE_AUTHOR("Stelian Pop "); MODULE_DESCRIPTION("video4linux driver for the MotionEye camera"); MODULE_LICENSE("GPL"); EXPORT_NO_SYMBOLS; MODULE_PARM(gbuffers,"i"); MODULE_PARM_DESC(gbuffers,"number of capture buffers, default is 2 (32 max)"); MODULE_PARM(gbufsize,"i"); MODULE_PARM_DESC(gbufsize,"size of the capture buffers, default is 614400"); MODULE_PARM(video_nr,"i"); MODULE_PARM_DESC(video_nr,"video device to register (0=/dev/video0, etc)"); /* Module entry points */ module_init(meye_init_module); module_exit(meye_cleanup_module);