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linux/drivers/media/video/meye.c
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00

2044 lines
54 KiB
C
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/*
* 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.
*
* 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/module.h>
#include <linux/pci.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/videodev.h>
#include <media/v4l2-common.h>
#include <asm/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("v4l/v4l2 driver for the MotionEye camera");
MODULE_LICENSE("GPL");
MODULE_VERSION(MEYE_DRIVER_VERSION);
/* force usage of V4L1 API */
static int forcev4l1; /* = 0 */
module_param(forcev4l1, int, 0644);
MODULE_PARM_DESC(forcev4l1, "force use of V4L1 instead of V4L2");
/* 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_32BIT_MASK))
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)
{
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;
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 = 0;
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_get(meye.grabq, (unsigned char *)&reqnr,
sizeof(int)) != 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;
do_gettimeofday(&meye.grab_buffer[reqnr].timestamp);
meye.grab_buffer[reqnr].sequence = sequence++;
kfifo_put(meye.doneq, (unsigned char *)&reqnr, sizeof(int));
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_get(meye.grabq, (unsigned char *)&reqnr,
sizeof(int)) != 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;
do_gettimeofday(&meye.grab_buffer[reqnr].timestamp);
meye.grab_buffer[reqnr].sequence = sequence++;
kfifo_put(meye.doneq, (unsigned char *)&reqnr, sizeof(int));
wake_up_interruptible(&meye.proc_list);
}
mchip_free_frame();
goto again;
}
/****************************************************************************/
/* video4linux integration */
/****************************************************************************/
static int meye_open(struct inode *inode, struct file *file)
{
int i, err;
err = video_exclusive_open(inode, file);
if (err < 0)
return err;
mchip_hic_stop();
if (mchip_dma_alloc()) {
printk(KERN_ERR "meye: mchip framebuffer allocation failed\n");
video_exclusive_release(inode, file);
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 0;
}
static int meye_release(struct inode *inode, struct file *file)
{
mchip_hic_stop();
mchip_dma_free();
video_exclusive_release(inode, file);
return 0;
}
static int meye_do_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, void *arg)
{
switch (cmd) {
case VIDIOCGCAP: {
struct video_capability *b = arg;
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;
break;
}
case VIDIOCGCHAN: {
struct video_channel *v = arg;
v->flags = 0;
v->tuners = 0;
v->type = VIDEO_TYPE_CAMERA;
if (v->channel != 0)
return -EINVAL;
strcpy(v->name,"Camera");
break;
}
case VIDIOCSCHAN: {
struct video_channel *v = arg;
if (v->channel != 0)
return -EINVAL;
break;
}
case VIDIOCGPICT: {
struct video_picture *p = arg;
*p = meye.picture;
break;
}
case VIDIOCSPICT: {
struct video_picture *p = arg;
if (p->depth != 16)
return -EINVAL;
if (p->palette != VIDEO_PALETTE_YUV422)
return -EINVAL;
mutex_lock(&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);
meye.picture = *p;
mutex_unlock(&meye.lock);
break;
}
case VIDIOCSYNC: {
int *i = arg;
int unused;
if (*i < 0 || *i >= gbuffers)
return -EINVAL;
mutex_lock(&meye.lock);
switch (meye.grab_buffer[*i].state) {
case MEYE_BUF_UNUSED:
mutex_unlock(&meye.lock);
return -EINVAL;
case MEYE_BUF_USING:
if (file->f_flags & O_NONBLOCK) {
mutex_unlock(&meye.lock);
return -EAGAIN;
}
if (wait_event_interruptible(meye.proc_list,
(meye.grab_buffer[*i].state != MEYE_BUF_USING))) {
mutex_unlock(&meye.lock);
return -EINTR;
}
/* fall through */
case MEYE_BUF_DONE:
meye.grab_buffer[*i].state = MEYE_BUF_UNUSED;
kfifo_get(meye.doneq, (unsigned char *)&unused, sizeof(int));
}
mutex_unlock(&meye.lock);
break;
}
case VIDIOCMCAPTURE: {
struct video_mmap *vm = arg;
int restart = 0;
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;
mutex_lock(&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 {
mutex_unlock(&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;
kfifo_put(meye.grabq, (unsigned char *)&vm->frame, sizeof(int));
mutex_unlock(&meye.lock);
break;
}
case VIDIOCGMBUF: {
struct video_mbuf *vm = arg;
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;
break;
}
case MEYEIOC_G_PARAMS: {
struct meye_params *p = arg;
*p = meye.params;
break;
}
case MEYEIOC_S_PARAMS: {
struct meye_params *jp = arg;
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;
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);
mutex_unlock(&meye.lock);
break;
}
case MEYEIOC_QBUF_CAPT: {
int *nb = arg;
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_put(meye.grabq, (unsigned char *)nb, sizeof(int));
mutex_unlock(&meye.lock);
break;
}
case MEYEIOC_SYNC: {
int *i = arg;
int unused;
if (*i < 0 || *i >= gbuffers)
return -EINVAL;
mutex_lock(&meye.lock);
switch (meye.grab_buffer[*i].state) {
case MEYE_BUF_UNUSED:
mutex_unlock(&meye.lock);
return -EINVAL;
case MEYE_BUF_USING:
if (file->f_flags & O_NONBLOCK) {
mutex_unlock(&meye.lock);
return -EAGAIN;
}
if (wait_event_interruptible(meye.proc_list,
(meye.grab_buffer[*i].state != MEYE_BUF_USING))) {
mutex_unlock(&meye.lock);
return -EINTR;
}
/* fall through */
case MEYE_BUF_DONE:
meye.grab_buffer[*i].state = MEYE_BUF_UNUSED;
kfifo_get(meye.doneq, (unsigned char *)&unused, sizeof(int));
}
*i = meye.grab_buffer[*i].size;
mutex_unlock(&meye.lock);
break;
}
case MEYEIOC_STILLCAPT: {
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);
break;
}
case MEYEIOC_STILLJCAPT: {
int *len = arg;
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);
break;
}
case VIDIOC_QUERYCAP: {
struct v4l2_capability *cap = arg;
if (forcev4l1)
return -EINVAL;
memset(cap, 0, sizeof(*cap));
strcpy(cap->driver, "meye");
strcpy(cap->card, "meye");
sprintf(cap->bus_info, "PCI:%s", pci_name(meye.mchip_dev));
cap->version = (MEYE_DRIVER_MAJORVERSION << 8) +
MEYE_DRIVER_MINORVERSION;
cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
V4L2_CAP_STREAMING;
break;
}
case VIDIOC_ENUMINPUT: {
struct v4l2_input *i = arg;
if (i->index != 0)
return -EINVAL;
memset(i, 0, sizeof(*i));
i->index = 0;
strcpy(i->name, "Camera");
i->type = V4L2_INPUT_TYPE_CAMERA;
break;
}
case VIDIOC_G_INPUT: {
int *i = arg;
*i = 0;
break;
}
case VIDIOC_S_INPUT: {
int *i = arg;
if (*i != 0)
return -EINVAL;
break;
}
case VIDIOC_QUERYCTRL: {
struct v4l2_queryctrl *c = arg;
switch (c->id) {
case V4L2_CID_BRIGHTNESS:
c->type = V4L2_CTRL_TYPE_INTEGER;
strcpy(c->name, "Brightness");
c->minimum = 0;
c->maximum = 63;
c->step = 1;
c->default_value = 32;
c->flags = 0;
break;
case V4L2_CID_HUE:
c->type = V4L2_CTRL_TYPE_INTEGER;
strcpy(c->name, "Hue");
c->minimum = 0;
c->maximum = 63;
c->step = 1;
c->default_value = 32;
c->flags = 0;
break;
case V4L2_CID_CONTRAST:
c->type = V4L2_CTRL_TYPE_INTEGER;
strcpy(c->name, "Contrast");
c->minimum = 0;
c->maximum = 63;
c->step = 1;
c->default_value = 32;
c->flags = 0;
break;
case V4L2_CID_SATURATION:
c->type = V4L2_CTRL_TYPE_INTEGER;
strcpy(c->name, "Saturation");
c->minimum = 0;
c->maximum = 63;
c->step = 1;
c->default_value = 32;
c->flags = 0;
break;
case V4L2_CID_AGC:
c->type = V4L2_CTRL_TYPE_INTEGER;
strcpy(c->name, "Agc");
c->minimum = 0;
c->maximum = 63;
c->step = 1;
c->default_value = 48;
c->flags = 0;
break;
case V4L2_CID_SHARPNESS:
c->type = V4L2_CTRL_TYPE_INTEGER;
strcpy(c->name, "Sharpness");
c->minimum = 0;
c->maximum = 63;
c->step = 1;
c->default_value = 32;
c->flags = 0;
break;
case V4L2_CID_PICTURE:
c->type = V4L2_CTRL_TYPE_INTEGER;
strcpy(c->name, "Picture");
c->minimum = 0;
c->maximum = 63;
c->step = 1;
c->default_value = 0;
c->flags = 0;
break;
case V4L2_CID_JPEGQUAL:
c->type = V4L2_CTRL_TYPE_INTEGER;
strcpy(c->name, "JPEG quality");
c->minimum = 0;
c->maximum = 10;
c->step = 1;
c->default_value = 8;
c->flags = 0;
break;
case V4L2_CID_FRAMERATE:
c->type = V4L2_CTRL_TYPE_INTEGER;
strcpy(c->name, "Framerate");
c->minimum = 0;
c->maximum = 31;
c->step = 1;
c->default_value = 0;
c->flags = 0;
break;
default:
return -EINVAL;
}
break;
}
case VIDIOC_S_CTRL: {
struct v4l2_control *c = arg;
mutex_lock(&meye.lock);
switch (c->id) {
case V4L2_CID_BRIGHTNESS:
sonypi_camera_command(
SONYPI_COMMAND_SETCAMERABRIGHTNESS, c->value);
meye.picture.brightness = c->value << 10;
break;
case V4L2_CID_HUE:
sonypi_camera_command(
SONYPI_COMMAND_SETCAMERAHUE, c->value);
meye.picture.hue = c->value << 10;
break;
case V4L2_CID_CONTRAST:
sonypi_camera_command(
SONYPI_COMMAND_SETCAMERACONTRAST, c->value);
meye.picture.contrast = c->value << 10;
break;
case V4L2_CID_SATURATION:
sonypi_camera_command(
SONYPI_COMMAND_SETCAMERACOLOR, c->value);
meye.picture.colour = c->value << 10;
break;
case V4L2_CID_AGC:
sonypi_camera_command(
SONYPI_COMMAND_SETCAMERAAGC, c->value);
meye.params.agc = c->value;
break;
case V4L2_CID_SHARPNESS:
sonypi_camera_command(
SONYPI_COMMAND_SETCAMERASHARPNESS, c->value);
meye.params.sharpness = c->value;
break;
case V4L2_CID_PICTURE:
sonypi_camera_command(
SONYPI_COMMAND_SETCAMERAPICTURE, c->value);
meye.params.picture = c->value;
break;
case V4L2_CID_JPEGQUAL:
meye.params.quality = c->value;
break;
case V4L2_CID_FRAMERATE:
meye.params.framerate = c->value;
break;
default:
mutex_unlock(&meye.lock);
return -EINVAL;
}
mutex_unlock(&meye.lock);
break;
}
case VIDIOC_G_CTRL: {
struct v4l2_control *c = arg;
mutex_lock(&meye.lock);
switch (c->id) {
case V4L2_CID_BRIGHTNESS:
c->value = meye.picture.brightness >> 10;
break;
case V4L2_CID_HUE:
c->value = meye.picture.hue >> 10;
break;
case V4L2_CID_CONTRAST:
c->value = meye.picture.contrast >> 10;
break;
case V4L2_CID_SATURATION:
c->value = meye.picture.colour >> 10;
break;
case V4L2_CID_AGC:
c->value = meye.params.agc;
break;
case V4L2_CID_SHARPNESS:
c->value = meye.params.sharpness;
break;
case V4L2_CID_PICTURE:
c->value = meye.params.picture;
break;
case V4L2_CID_JPEGQUAL:
c->value = meye.params.quality;
break;
case V4L2_CID_FRAMERATE:
c->value = meye.params.framerate;
break;
default:
mutex_unlock(&meye.lock);
return -EINVAL;
}
mutex_unlock(&meye.lock);
break;
}
case VIDIOC_ENUM_FMT: {
struct v4l2_fmtdesc *f = arg;
if (f->index > 1)
return -EINVAL;
if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (f->index == 0) {
/* standard YUV 422 capture */
memset(f, 0, sizeof(*f));
f->index = 0;
f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
f->flags = 0;
strcpy(f->description, "YUV422");
f->pixelformat = V4L2_PIX_FMT_YUYV;
} else {
/* compressed MJPEG capture */
memset(f, 0, sizeof(*f));
f->index = 1;
f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
f->flags = V4L2_FMT_FLAG_COMPRESSED;
strcpy(f->description, "MJPEG");
f->pixelformat = V4L2_PIX_FMT_MJPEG;
}
break;
}
case VIDIOC_TRY_FMT: {
struct v4l2_format *f = arg;
if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
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;
f->fmt.pix.priv = 0;
break;
}
case VIDIOC_G_FMT: {
struct v4l2_format *f = arg;
if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
memset(&f->fmt.pix, 0, sizeof(struct v4l2_pix_format));
f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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;
f->fmt.pix.colorspace = 0;
f->fmt.pix.priv = 0;
break;
}
case VIDIOC_S_FMT: {
struct v4l2_format *f = arg;
if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
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;
f->fmt.pix.priv = 0;
break;
}
case VIDIOC_REQBUFS: {
struct v4l2_requestbuffers *req = arg;
int i;
if (req->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (req->memory != V4L2_MEMORY_MMAP)
return -EINVAL;
if (meye.grab_fbuffer && req->count == gbuffers) {
/* already allocated, no modifications */
break;
}
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);
break;
}
case VIDIOC_QUERYBUF: {
struct v4l2_buffer *buf = arg;
int index = buf->index;
if (index < 0 || index >= gbuffers)
return -EINVAL;
memset(buf, 0, sizeof(*buf));
buf->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf->index = index;
buf->bytesused = meye.grab_buffer[index].size;
buf->flags = V4L2_BUF_FLAG_MAPPED;
if (meye.grab_buffer[index].state == MEYE_BUF_USING)
buf->flags |= V4L2_BUF_FLAG_QUEUED;
if (meye.grab_buffer[index].state == MEYE_BUF_DONE)
buf->flags |= V4L2_BUF_FLAG_DONE;
buf->field = V4L2_FIELD_NONE;
buf->timestamp = meye.grab_buffer[index].timestamp;
buf->sequence = meye.grab_buffer[index].sequence;
buf->memory = V4L2_MEMORY_MMAP;
buf->m.offset = index * gbufsize;
buf->length = gbufsize;
break;
}
case VIDIOC_QBUF: {
struct v4l2_buffer *buf = arg;
if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (buf->memory != V4L2_MEMORY_MMAP)
return -EINVAL;
if (buf->index < 0 || 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_put(meye.grabq, (unsigned char *)&buf->index, sizeof(int));
mutex_unlock(&meye.lock);
break;
}
case VIDIOC_DQBUF: {
struct v4l2_buffer *buf = arg;
int reqnr;
if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
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_get(meye.doneq, (unsigned char *)&reqnr,
sizeof(int))) {
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;
buf->field = V4L2_FIELD_NONE;
buf->timestamp = meye.grab_buffer[reqnr].timestamp;
buf->sequence = meye.grab_buffer[reqnr].sequence;
buf->memory = V4L2_MEMORY_MMAP;
buf->m.offset = reqnr * gbufsize;
buf->length = gbufsize;
meye.grab_buffer[reqnr].state = MEYE_BUF_UNUSED;
mutex_unlock(&meye.lock);
break;
}
case VIDIOC_STREAMON: {
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);
break;
}
case VIDIOC_STREAMOFF: {
int 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);
break;
}
/*
* XXX what about private snapshot ioctls ?
* Do they need to be converted to V4L2 ?
*/
default:
return -ENOIOCTLCMD;
}
return 0;
}
static int meye_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
return video_usercopy(inode, file, cmd, arg, meye_do_ioctl);
}
static unsigned int meye_poll(struct file *file, poll_table *wait)
{
unsigned int res = 0;
mutex_lock(&meye.lock);
poll_wait(file, &meye.proc_list, wait);
if (kfifo_len(meye.doneq))
res = POLLIN | POLLRDNORM;
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 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) {
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_RESERVED; /* avoid to swap out this VMA */
vma->vm_private_data = (void *) (offset / gbufsize);
meye_vm_open(vma);
mutex_unlock(&meye.lock);
return 0;
}
static struct file_operations meye_fops = {
.owner = THIS_MODULE,
.open = meye_open,
.release = meye_release,
.mmap = meye_mmap,
.ioctl = meye_ioctl,
.compat_ioctl = v4l_compat_ioctl32,
.poll = meye_poll,
.llseek = no_llseek,
};
static struct video_device meye_template = {
.owner = THIS_MODULE,
.name = "meye",
.type = VID_TYPE_CAPTURE,
.hardware = VID_HARDWARE_MEYE,
.fops = &meye_fops,
.release = video_device_release,
.minor = -1,
};
#ifdef CONFIG_PM
static int meye_suspend(struct pci_dev *pdev, pm_message_t state)
{
pci_save_state(pdev);
meye.pm_mchip_mode = meye.mchip_mode;
mchip_hic_stop();
mchip_set(MCHIP_MM_INTA, 0x0);
return 0;
}
static int meye_resume(struct pci_dev *pdev)
{
pci_restore_state(pdev);
pci_write_config_word(meye.mchip_dev, MCHIP_PCI_SOFTRESET_SET, 1);
mchip_delay(MCHIP_HIC_CMD, 0);
mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE);
msleep(1);
mchip_set(MCHIP_VRJ_SOFT_RESET, 1);
msleep(1);
mchip_set(MCHIP_MM_PCI_MODE, 5);
msleep(1);
mchip_set(MCHIP_MM_INTA, MCHIP_MM_INTA_HIC_1_MASK);
switch (meye.pm_mchip_mode) {
case MCHIP_HIC_MODE_CONT_OUT:
mchip_continuous_start();
break;
case MCHIP_HIC_MODE_CONT_COMP:
mchip_cont_compression_start();
break;
}
return 0;
}
#endif
static int __devinit meye_probe(struct pci_dev *pcidev,
const struct pci_device_id *ent)
{
int ret = -EBUSY;
unsigned long mchip_adr;
u8 revision;
if (meye.mchip_dev != NULL) {
printk(KERN_ERR "meye: only one device allowed!\n");
goto outnotdev;
}
meye.mchip_dev = pcidev;
meye.video_dev = video_device_alloc();
if (!meye.video_dev) {
printk(KERN_ERR "meye: video_device_alloc() failed!\n");
goto outnotdev;
}
ret = -ENOMEM;
meye.grab_temp = vmalloc(MCHIP_NB_PAGES_MJPEG * PAGE_SIZE);
if (!meye.grab_temp) {
printk(KERN_ERR "meye: grab buffer allocation failed\n");
goto outvmalloc;
}
spin_lock_init(&meye.grabq_lock);
meye.grabq = kfifo_alloc(sizeof(int) * MEYE_MAX_BUFNBRS, GFP_KERNEL,
&meye.grabq_lock);
if (IS_ERR(meye.grabq)) {
printk(KERN_ERR "meye: fifo allocation failed\n");
goto outkfifoalloc1;
}
spin_lock_init(&meye.doneq_lock);
meye.doneq = kfifo_alloc(sizeof(int) * MEYE_MAX_BUFNBRS, GFP_KERNEL,
&meye.doneq_lock);
if (IS_ERR(meye.doneq)) {
printk(KERN_ERR "meye: fifo allocation failed\n");
goto outkfifoalloc2;
}
memcpy(meye.video_dev, &meye_template, sizeof(meye_template));
meye.video_dev->dev = &meye.mchip_dev->dev;
if ((ret = sonypi_camera_command(SONYPI_COMMAND_SETCAMERA, 1))) {
printk(KERN_ERR "meye: unable to power on the camera\n");
printk(KERN_ERR "meye: did you enable the camera in "
"sonypi using the module options ?\n");
goto outsonypienable;
}
ret = -EIO;
if ((ret = pci_enable_device(meye.mchip_dev))) {
printk(KERN_ERR "meye: pci_enable_device failed\n");
goto outenabledev;
}
mchip_adr = pci_resource_start(meye.mchip_dev,0);
if (!mchip_adr) {
printk(KERN_ERR "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")) {
printk(KERN_ERR "meye: request_mem_region failed\n");
goto outregions;
}
meye.mchip_mmregs = ioremap(mchip_adr, MCHIP_MM_REGS);
if (!meye.mchip_mmregs) {
printk(KERN_ERR "meye: ioremap failed\n");
goto outremap;
}
meye.mchip_irq = pcidev->irq;
if (request_irq(meye.mchip_irq, meye_irq,
IRQF_DISABLED | IRQF_SHARED, "meye", meye_irq)) {
printk(KERN_ERR "meye: request_irq failed\n");
goto outreqirq;
}
pci_read_config_byte(meye.mchip_dev, PCI_REVISION_ID, &revision);
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);
if (video_register_device(meye.video_dev, VFL_TYPE_GRABBER,
video_nr) < 0) {
printk(KERN_ERR "meye: video_register_device failed\n");
goto outvideoreg;
}
mutex_init(&meye.lock);
init_waitqueue_head(&meye.proc_list);
meye.picture.depth = 16;
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 = 8;
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);
printk(KERN_INFO "meye: Motion Eye Camera Driver v%s.\n",
MEYE_DRIVER_VERSION);
printk(KERN_INFO "meye: mchip KL5A72002 rev. %d, base %lx, irq %d\n",
revision, mchip_adr, meye.mchip_irq);
return 0;
outvideoreg:
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:
sonypi_camera_command(SONYPI_COMMAND_SETCAMERA, 0);
outsonypienable:
kfifo_free(meye.doneq);
outkfifoalloc2:
kfifo_free(meye.grabq);
outkfifoalloc1:
vfree(meye.grab_temp);
outvmalloc:
video_device_release(meye.video_dev);
outnotdev:
return ret;
}
static void __devexit meye_remove(struct pci_dev *pcidev)
{
video_unregister_device(meye.video_dev);
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);
sonypi_camera_command(SONYPI_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 struct pci_device_id meye_pci_tbl[] = {
{ 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),
#ifdef CONFIG_PM
.suspend = meye_suspend,
.resume = meye_resume,
#endif
};
static int __init meye_init(void)
{
gbuffers = max(2, min((int)gbuffers, MEYE_MAX_BUFNBRS));
if (gbufsize < 0 || 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);
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