mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 13:13:57 +08:00
cc3590dbb8
This is no longer needed since the core now handles this through DBG_G_CHIP_INFO. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
379 lines
8.7 KiB
C
379 lines
8.7 KiB
C
/*
|
|
* indycam.c - Silicon Graphics IndyCam digital camera driver
|
|
*
|
|
* Copyright (C) 2003 Ladislav Michl <ladis@linux-mips.org>
|
|
* Copyright (C) 2004,2005 Mikael Nousiainen <tmnousia@cc.hut.fi>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/delay.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/major.h>
|
|
#include <linux/module.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/slab.h>
|
|
|
|
/* IndyCam decodes stream of photons into digital image representation ;-) */
|
|
#include <linux/videodev2.h>
|
|
#include <linux/i2c.h>
|
|
#include <media/v4l2-device.h>
|
|
|
|
#include "indycam.h"
|
|
|
|
#define INDYCAM_MODULE_VERSION "0.0.5"
|
|
|
|
MODULE_DESCRIPTION("SGI IndyCam driver");
|
|
MODULE_VERSION(INDYCAM_MODULE_VERSION);
|
|
MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
|
// #define INDYCAM_DEBUG
|
|
|
|
#ifdef INDYCAM_DEBUG
|
|
#define dprintk(x...) printk("IndyCam: " x);
|
|
#define indycam_regdump(client) indycam_regdump_debug(client)
|
|
#else
|
|
#define dprintk(x...)
|
|
#define indycam_regdump(client)
|
|
#endif
|
|
|
|
struct indycam {
|
|
struct v4l2_subdev sd;
|
|
u8 version;
|
|
};
|
|
|
|
static inline struct indycam *to_indycam(struct v4l2_subdev *sd)
|
|
{
|
|
return container_of(sd, struct indycam, sd);
|
|
}
|
|
|
|
static const u8 initseq[] = {
|
|
INDYCAM_CONTROL_AGCENA, /* INDYCAM_CONTROL */
|
|
INDYCAM_SHUTTER_60, /* INDYCAM_SHUTTER */
|
|
INDYCAM_GAIN_DEFAULT, /* INDYCAM_GAIN */
|
|
0x00, /* INDYCAM_BRIGHTNESS (read-only) */
|
|
INDYCAM_RED_BALANCE_DEFAULT, /* INDYCAM_RED_BALANCE */
|
|
INDYCAM_BLUE_BALANCE_DEFAULT, /* INDYCAM_BLUE_BALANCE */
|
|
INDYCAM_RED_SATURATION_DEFAULT, /* INDYCAM_RED_SATURATION */
|
|
INDYCAM_BLUE_SATURATION_DEFAULT,/* INDYCAM_BLUE_SATURATION */
|
|
};
|
|
|
|
/* IndyCam register handling */
|
|
|
|
static int indycam_read_reg(struct v4l2_subdev *sd, u8 reg, u8 *value)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
int ret;
|
|
|
|
if (reg == INDYCAM_REG_RESET) {
|
|
dprintk("indycam_read_reg(): "
|
|
"skipping write-only register %d\n", reg);
|
|
*value = 0;
|
|
return 0;
|
|
}
|
|
|
|
ret = i2c_smbus_read_byte_data(client, reg);
|
|
|
|
if (ret < 0) {
|
|
printk(KERN_ERR "IndyCam: indycam_read_reg(): read failed, "
|
|
"register = 0x%02x\n", reg);
|
|
return ret;
|
|
}
|
|
|
|
*value = (u8)ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int indycam_write_reg(struct v4l2_subdev *sd, u8 reg, u8 value)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
int err;
|
|
|
|
if (reg == INDYCAM_REG_BRIGHTNESS || reg == INDYCAM_REG_VERSION) {
|
|
dprintk("indycam_write_reg(): "
|
|
"skipping read-only register %d\n", reg);
|
|
return 0;
|
|
}
|
|
|
|
dprintk("Writing Reg %d = 0x%02x\n", reg, value);
|
|
err = i2c_smbus_write_byte_data(client, reg, value);
|
|
|
|
if (err) {
|
|
printk(KERN_ERR "IndyCam: indycam_write_reg(): write failed, "
|
|
"register = 0x%02x, value = 0x%02x\n", reg, value);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
static int indycam_write_block(struct v4l2_subdev *sd, u8 reg,
|
|
u8 length, u8 *data)
|
|
{
|
|
int i, err;
|
|
|
|
for (i = 0; i < length; i++) {
|
|
err = indycam_write_reg(sd, reg + i, data[i]);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Helper functions */
|
|
|
|
#ifdef INDYCAM_DEBUG
|
|
static void indycam_regdump_debug(struct v4l2_subdev *sd)
|
|
{
|
|
int i;
|
|
u8 val;
|
|
|
|
for (i = 0; i < 9; i++) {
|
|
indycam_read_reg(sd, i, &val);
|
|
dprintk("Reg %d = 0x%02x\n", i, val);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static int indycam_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
|
|
{
|
|
struct indycam *camera = to_indycam(sd);
|
|
u8 reg;
|
|
int ret = 0;
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_AUTOGAIN:
|
|
case V4L2_CID_AUTO_WHITE_BALANCE:
|
|
ret = indycam_read_reg(sd, INDYCAM_REG_CONTROL, ®);
|
|
if (ret)
|
|
return -EIO;
|
|
if (ctrl->id == V4L2_CID_AUTOGAIN)
|
|
ctrl->value = (reg & INDYCAM_CONTROL_AGCENA)
|
|
? 1 : 0;
|
|
else
|
|
ctrl->value = (reg & INDYCAM_CONTROL_AWBCTL)
|
|
? 1 : 0;
|
|
break;
|
|
case V4L2_CID_EXPOSURE:
|
|
ret = indycam_read_reg(sd, INDYCAM_REG_SHUTTER, ®);
|
|
if (ret)
|
|
return -EIO;
|
|
ctrl->value = ((s32)reg == 0x00) ? 0xff : ((s32)reg - 1);
|
|
break;
|
|
case V4L2_CID_GAIN:
|
|
ret = indycam_read_reg(sd, INDYCAM_REG_GAIN, ®);
|
|
if (ret)
|
|
return -EIO;
|
|
ctrl->value = (s32)reg;
|
|
break;
|
|
case V4L2_CID_RED_BALANCE:
|
|
ret = indycam_read_reg(sd, INDYCAM_REG_RED_BALANCE, ®);
|
|
if (ret)
|
|
return -EIO;
|
|
ctrl->value = (s32)reg;
|
|
break;
|
|
case V4L2_CID_BLUE_BALANCE:
|
|
ret = indycam_read_reg(sd, INDYCAM_REG_BLUE_BALANCE, ®);
|
|
if (ret)
|
|
return -EIO;
|
|
ctrl->value = (s32)reg;
|
|
break;
|
|
case INDYCAM_CONTROL_RED_SATURATION:
|
|
ret = indycam_read_reg(sd,
|
|
INDYCAM_REG_RED_SATURATION, ®);
|
|
if (ret)
|
|
return -EIO;
|
|
ctrl->value = (s32)reg;
|
|
break;
|
|
case INDYCAM_CONTROL_BLUE_SATURATION:
|
|
ret = indycam_read_reg(sd,
|
|
INDYCAM_REG_BLUE_SATURATION, ®);
|
|
if (ret)
|
|
return -EIO;
|
|
ctrl->value = (s32)reg;
|
|
break;
|
|
case V4L2_CID_GAMMA:
|
|
if (camera->version == CAMERA_VERSION_MOOSE) {
|
|
ret = indycam_read_reg(sd,
|
|
INDYCAM_REG_GAMMA, ®);
|
|
if (ret)
|
|
return -EIO;
|
|
ctrl->value = (s32)reg;
|
|
} else {
|
|
ctrl->value = INDYCAM_GAMMA_DEFAULT;
|
|
}
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int indycam_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
|
|
{
|
|
struct indycam *camera = to_indycam(sd);
|
|
u8 reg;
|
|
int ret = 0;
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_AUTOGAIN:
|
|
case V4L2_CID_AUTO_WHITE_BALANCE:
|
|
ret = indycam_read_reg(sd, INDYCAM_REG_CONTROL, ®);
|
|
if (ret)
|
|
break;
|
|
|
|
if (ctrl->id == V4L2_CID_AUTOGAIN) {
|
|
if (ctrl->value)
|
|
reg |= INDYCAM_CONTROL_AGCENA;
|
|
else
|
|
reg &= ~INDYCAM_CONTROL_AGCENA;
|
|
} else {
|
|
if (ctrl->value)
|
|
reg |= INDYCAM_CONTROL_AWBCTL;
|
|
else
|
|
reg &= ~INDYCAM_CONTROL_AWBCTL;
|
|
}
|
|
|
|
ret = indycam_write_reg(sd, INDYCAM_REG_CONTROL, reg);
|
|
break;
|
|
case V4L2_CID_EXPOSURE:
|
|
reg = (ctrl->value == 0xff) ? 0x00 : (ctrl->value + 1);
|
|
ret = indycam_write_reg(sd, INDYCAM_REG_SHUTTER, reg);
|
|
break;
|
|
case V4L2_CID_GAIN:
|
|
ret = indycam_write_reg(sd, INDYCAM_REG_GAIN, ctrl->value);
|
|
break;
|
|
case V4L2_CID_RED_BALANCE:
|
|
ret = indycam_write_reg(sd, INDYCAM_REG_RED_BALANCE,
|
|
ctrl->value);
|
|
break;
|
|
case V4L2_CID_BLUE_BALANCE:
|
|
ret = indycam_write_reg(sd, INDYCAM_REG_BLUE_BALANCE,
|
|
ctrl->value);
|
|
break;
|
|
case INDYCAM_CONTROL_RED_SATURATION:
|
|
ret = indycam_write_reg(sd, INDYCAM_REG_RED_SATURATION,
|
|
ctrl->value);
|
|
break;
|
|
case INDYCAM_CONTROL_BLUE_SATURATION:
|
|
ret = indycam_write_reg(sd, INDYCAM_REG_BLUE_SATURATION,
|
|
ctrl->value);
|
|
break;
|
|
case V4L2_CID_GAMMA:
|
|
if (camera->version == CAMERA_VERSION_MOOSE) {
|
|
ret = indycam_write_reg(sd, INDYCAM_REG_GAMMA,
|
|
ctrl->value);
|
|
}
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* I2C-interface */
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static const struct v4l2_subdev_core_ops indycam_core_ops = {
|
|
.g_ctrl = indycam_g_ctrl,
|
|
.s_ctrl = indycam_s_ctrl,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops indycam_ops = {
|
|
.core = &indycam_core_ops,
|
|
};
|
|
|
|
static int indycam_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
int err = 0;
|
|
struct indycam *camera;
|
|
struct v4l2_subdev *sd;
|
|
|
|
v4l_info(client, "chip found @ 0x%x (%s)\n",
|
|
client->addr << 1, client->adapter->name);
|
|
|
|
camera = kzalloc(sizeof(struct indycam), GFP_KERNEL);
|
|
if (!camera)
|
|
return -ENOMEM;
|
|
|
|
sd = &camera->sd;
|
|
v4l2_i2c_subdev_init(sd, client, &indycam_ops);
|
|
|
|
camera->version = i2c_smbus_read_byte_data(client,
|
|
INDYCAM_REG_VERSION);
|
|
if (camera->version != CAMERA_VERSION_INDY &&
|
|
camera->version != CAMERA_VERSION_MOOSE) {
|
|
kfree(camera);
|
|
return -ENODEV;
|
|
}
|
|
|
|
printk(KERN_INFO "IndyCam v%d.%d detected\n",
|
|
INDYCAM_VERSION_MAJOR(camera->version),
|
|
INDYCAM_VERSION_MINOR(camera->version));
|
|
|
|
indycam_regdump(sd);
|
|
|
|
// initialize
|
|
err = indycam_write_block(sd, 0, sizeof(initseq), (u8 *)&initseq);
|
|
if (err) {
|
|
printk(KERN_ERR "IndyCam initialization failed\n");
|
|
kfree(camera);
|
|
return -EIO;
|
|
}
|
|
|
|
indycam_regdump(sd);
|
|
|
|
// white balance
|
|
err = indycam_write_reg(sd, INDYCAM_REG_CONTROL,
|
|
INDYCAM_CONTROL_AGCENA | INDYCAM_CONTROL_AWBCTL);
|
|
if (err) {
|
|
printk(KERN_ERR "IndyCam: White balancing camera failed\n");
|
|
kfree(camera);
|
|
return -EIO;
|
|
}
|
|
|
|
indycam_regdump(sd);
|
|
|
|
printk(KERN_INFO "IndyCam initialized\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int indycam_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
|
|
v4l2_device_unregister_subdev(sd);
|
|
kfree(to_indycam(sd));
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id indycam_id[] = {
|
|
{ "indycam", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, indycam_id);
|
|
|
|
static struct i2c_driver indycam_driver = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "indycam",
|
|
},
|
|
.probe = indycam_probe,
|
|
.remove = indycam_remove,
|
|
.id_table = indycam_id,
|
|
};
|
|
|
|
module_i2c_driver(indycam_driver);
|