diff options
Diffstat (limited to 'drivers/staging/media/deprecated/meye/meye.c')
| -rw-r--r-- | drivers/staging/media/deprecated/meye/meye.c | 1814 |
1 files changed, 1814 insertions, 0 deletions
diff --git a/drivers/staging/media/deprecated/meye/meye.c b/drivers/staging/media/deprecated/meye/meye.c new file mode 100644 index 000000000000..5d87efd9b95c --- /dev/null +++ b/drivers/staging/media/deprecated/meye/meye.c @@ -0,0 +1,1814 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Motion Eye video4linux driver for Sony Vaio PictureBook + * + * Copyright (C) 2001-2004 Stelian Pop <stelian@popies.net> + * + * Copyright (C) 2001-2002 Alcôve <www.alcove.com> + * + * 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. + */ +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/sched.h> +#include <linux/init.h> +#include <linux/gfp.h> +#include <linux/videodev2.h> +#include <media/v4l2-common.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-fh.h> +#include <media/v4l2-event.h> +#include <linux/uaccess.h> +#include <asm/io.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/vmalloc.h> +#include <linux/dma-mapping.h> + +#include "meye.h" +#include <linux/meye.h> + +MODULE_AUTHOR("Stelian Pop <stelian@popies.net>"); +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; + meye.grab_buffer[reqnr].ts = ktime_get_ns(); + 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; + meye.grab_buffer[reqnr].ts = ktime_get_ns(); + 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; + } + fallthrough; + 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) +{ + strscpy(cap->driver, "meye", sizeof(cap->driver)); + strscpy(cap->card, "meye", sizeof(cap->card)); + return 0; +} + +static int vidioc_enum_input(struct file *file, void *fh, struct v4l2_input *i) +{ + if (i->index != 0) + return -EINVAL; + + strscpy(i->name, "Camera", sizeof(i->name)); + 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; + f->pixelformat = V4L2_PIX_FMT_YUYV; + } else { + /* compressed MJPEG capture */ + 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; + v4l2_buffer_set_timestamp(buf, meye.grab_buffer[index].ts); + 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; + v4l2_buffer_set_timestamp(buf, meye.grab_buffer[reqnr].ts); + 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, + .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING, +}; + +static const struct v4l2_ctrl_ops meye_ctrl_ops = { + .s_ctrl = meye_s_ctrl, +}; + +static int __maybe_unused meye_suspend(struct device *dev) +{ + meye.pm_mchip_mode = meye.mchip_mode; + mchip_hic_stop(); + mchip_set(MCHIP_MM_INTA, 0x0); + return 0; +} + +static int __maybe_unused meye_resume(struct device *dev) +{ + 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; +} + +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_VIDEO, + 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 SIMPLE_DEV_PM_OPS(meye_pm_ops, meye_suspend, meye_resume); + +static struct pci_driver meye_driver = { + .name = "meye", + .id_table = meye_pci_tbl, + .probe = meye_probe, + .remove = meye_remove, + .driver.pm = &meye_pm_ops, +}; + +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); |