meye.c
上传用户:lgb322
上传日期:2013-02-24
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文件大小:42k
- /*
- * Motion Eye video4linux driver for Sony Vaio PictureBook
- *
- * Copyright (C) 2001 Stelian Pop <stelian.pop@fr.alcove.com>, Alc魐e
- *
- * Copyright (C) 2000 Andrew Tridgell <tridge@valinux.com>
- *
- * 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 <linux/config.h>
- #include <linux/module.h>
- #include <linux/pci.h>
- #include <linux/sched.h>
- #include <linux/init.h>
- #include <linux/videodev.h>
- #include <asm/uaccess.h>
- #include <asm/io.h>
- #include <linux/delay.h>
- #include <linux/wrapper.h>
- #include <linux/interrupt.h>
- #include <linux/vmalloc.h>
- #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 8n", 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 readyn");
- 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%xn", 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 %dn",
- 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 %dn",
- 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 failedn");
- 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 failedn");
- 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 failedn");
- ret = -ENOMEM;
- goto out2;
- }
- if ((ret = pci_enable_device(meye.mchip_dev))) {
- printk(KERN_ERR "meye: pci_enable_device failedn");
- goto out3;
- }
- mchip_adr = pci_resource_start(meye.mchip_dev,0);
- if (!mchip_adr) {
- printk(KERN_ERR "meye: mchip has no device base addressn");
- 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 failedn");
- 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 failedn");
- 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 failedn");
- 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 %dn",
- 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: removedn");
- }
- 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 capturen",
- 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 <stelian.pop@fr.alcove.com>");
- 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);