mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-30 07:06:45 +07:00
7408187d22
Conversions from kmalloc+memset to k(z|c)alloc. Signed-off-by: Panagiotis Issaris <takis@issaris.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
472 lines
10 KiB
C
472 lines
10 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/sched.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include <linux/videodev.h>
|
|
/* IndyCam decodes stream of photons into digital image representation ;-) */
|
|
#include <linux/video_decoder.h>
|
|
#include <linux/i2c.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 i2c_client *client;
|
|
u8 version;
|
|
};
|
|
|
|
static struct i2c_driver i2c_driver_indycam;
|
|
|
|
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 i2c_client *client, u8 reg, u8 *value)
|
|
{
|
|
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 i2c_client *client, u8 reg, u8 value)
|
|
{
|
|
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 i2c_client *client, u8 reg,
|
|
u8 length, u8 *data)
|
|
{
|
|
int i, err;
|
|
|
|
for (i = 0; i < length; i++) {
|
|
err = indycam_write_reg(client, reg + i, data[i]);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Helper functions */
|
|
|
|
#ifdef INDYCAM_DEBUG
|
|
static void indycam_regdump_debug(struct i2c_client *client)
|
|
{
|
|
int i;
|
|
u8 val;
|
|
|
|
for (i = 0; i < 9; i++) {
|
|
indycam_read_reg(client, i, &val);
|
|
dprintk("Reg %d = 0x%02x\n", i, val);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static int indycam_get_control(struct i2c_client *client,
|
|
struct indycam_control *ctrl)
|
|
{
|
|
struct indycam *camera = i2c_get_clientdata(client);
|
|
u8 reg;
|
|
int ret = 0;
|
|
|
|
switch (ctrl->type) {
|
|
case INDYCAM_CONTROL_AGC:
|
|
case INDYCAM_CONTROL_AWB:
|
|
ret = indycam_read_reg(client, INDYCAM_REG_CONTROL, ®);
|
|
if (ret)
|
|
return -EIO;
|
|
if (ctrl->type == INDYCAM_CONTROL_AGC)
|
|
ctrl->value = (reg & INDYCAM_CONTROL_AGCENA)
|
|
? 1 : 0;
|
|
else
|
|
ctrl->value = (reg & INDYCAM_CONTROL_AWBCTL)
|
|
? 1 : 0;
|
|
break;
|
|
case INDYCAM_CONTROL_SHUTTER:
|
|
ret = indycam_read_reg(client, INDYCAM_REG_SHUTTER, ®);
|
|
if (ret)
|
|
return -EIO;
|
|
ctrl->value = ((s32)reg == 0x00) ? 0xff : ((s32)reg - 1);
|
|
break;
|
|
case INDYCAM_CONTROL_GAIN:
|
|
ret = indycam_read_reg(client, INDYCAM_REG_GAIN, ®);
|
|
if (ret)
|
|
return -EIO;
|
|
ctrl->value = (s32)reg;
|
|
break;
|
|
case INDYCAM_CONTROL_RED_BALANCE:
|
|
ret = indycam_read_reg(client, INDYCAM_REG_RED_BALANCE, ®);
|
|
if (ret)
|
|
return -EIO;
|
|
ctrl->value = (s32)reg;
|
|
break;
|
|
case INDYCAM_CONTROL_BLUE_BALANCE:
|
|
ret = indycam_read_reg(client, INDYCAM_REG_BLUE_BALANCE, ®);
|
|
if (ret)
|
|
return -EIO;
|
|
ctrl->value = (s32)reg;
|
|
break;
|
|
case INDYCAM_CONTROL_RED_SATURATION:
|
|
ret = indycam_read_reg(client,
|
|
INDYCAM_REG_RED_SATURATION, ®);
|
|
if (ret)
|
|
return -EIO;
|
|
ctrl->value = (s32)reg;
|
|
break;
|
|
case INDYCAM_CONTROL_BLUE_SATURATION:
|
|
ret = indycam_read_reg(client,
|
|
INDYCAM_REG_BLUE_SATURATION, ®);
|
|
if (ret)
|
|
return -EIO;
|
|
ctrl->value = (s32)reg;
|
|
break;
|
|
case INDYCAM_CONTROL_GAMMA:
|
|
if (camera->version == CAMERA_VERSION_MOOSE) {
|
|
ret = indycam_read_reg(client,
|
|
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_set_control(struct i2c_client *client,
|
|
struct indycam_control *ctrl)
|
|
{
|
|
struct indycam *camera = i2c_get_clientdata(client);
|
|
u8 reg;
|
|
int ret = 0;
|
|
|
|
switch (ctrl->type) {
|
|
case INDYCAM_CONTROL_AGC:
|
|
case INDYCAM_CONTROL_AWB:
|
|
ret = indycam_read_reg(client, INDYCAM_REG_CONTROL, ®);
|
|
if (ret)
|
|
break;
|
|
|
|
if (ctrl->type == INDYCAM_CONTROL_AGC) {
|
|
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(client, INDYCAM_REG_CONTROL, reg);
|
|
break;
|
|
case INDYCAM_CONTROL_SHUTTER:
|
|
reg = (ctrl->value == 0xff) ? 0x00 : (ctrl->value + 1);
|
|
ret = indycam_write_reg(client, INDYCAM_REG_SHUTTER, reg);
|
|
break;
|
|
case INDYCAM_CONTROL_GAIN:
|
|
ret = indycam_write_reg(client, INDYCAM_REG_GAIN, ctrl->value);
|
|
break;
|
|
case INDYCAM_CONTROL_RED_BALANCE:
|
|
ret = indycam_write_reg(client, INDYCAM_REG_RED_BALANCE,
|
|
ctrl->value);
|
|
break;
|
|
case INDYCAM_CONTROL_BLUE_BALANCE:
|
|
ret = indycam_write_reg(client, INDYCAM_REG_BLUE_BALANCE,
|
|
ctrl->value);
|
|
break;
|
|
case INDYCAM_CONTROL_RED_SATURATION:
|
|
ret = indycam_write_reg(client, INDYCAM_REG_RED_SATURATION,
|
|
ctrl->value);
|
|
break;
|
|
case INDYCAM_CONTROL_BLUE_SATURATION:
|
|
ret = indycam_write_reg(client, INDYCAM_REG_BLUE_SATURATION,
|
|
ctrl->value);
|
|
break;
|
|
case INDYCAM_CONTROL_GAMMA:
|
|
if (camera->version == CAMERA_VERSION_MOOSE) {
|
|
ret = indycam_write_reg(client, INDYCAM_REG_GAMMA,
|
|
ctrl->value);
|
|
}
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* I2C-interface */
|
|
|
|
static int indycam_attach(struct i2c_adapter *adap, int addr, int kind)
|
|
{
|
|
int err = 0;
|
|
struct indycam *camera;
|
|
struct i2c_client *client;
|
|
|
|
printk(KERN_INFO "SGI IndyCam driver version %s\n",
|
|
INDYCAM_MODULE_VERSION);
|
|
|
|
client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
|
|
if (!client)
|
|
return -ENOMEM;
|
|
camera = kzalloc(sizeof(struct indycam), GFP_KERNEL);
|
|
if (!camera) {
|
|
err = -ENOMEM;
|
|
goto out_free_client;
|
|
}
|
|
|
|
client->addr = addr;
|
|
client->adapter = adap;
|
|
client->driver = &i2c_driver_indycam;
|
|
client->flags = 0;
|
|
strcpy(client->name, "IndyCam client");
|
|
i2c_set_clientdata(client, camera);
|
|
|
|
camera->client = client;
|
|
|
|
err = i2c_attach_client(client);
|
|
if (err)
|
|
goto out_free_camera;
|
|
|
|
camera->version = i2c_smbus_read_byte_data(client,
|
|
INDYCAM_REG_VERSION);
|
|
if (camera->version != CAMERA_VERSION_INDY &&
|
|
camera->version != CAMERA_VERSION_MOOSE) {
|
|
err = -ENODEV;
|
|
goto out_detach_client;
|
|
}
|
|
printk(KERN_INFO "IndyCam v%d.%d detected\n",
|
|
INDYCAM_VERSION_MAJOR(camera->version),
|
|
INDYCAM_VERSION_MINOR(camera->version));
|
|
|
|
indycam_regdump(client);
|
|
|
|
// initialize
|
|
err = indycam_write_block(client, 0, sizeof(initseq), (u8 *)&initseq);
|
|
if (err) {
|
|
printk(KERN_ERR "IndyCam initalization failed\n");
|
|
err = -EIO;
|
|
goto out_detach_client;
|
|
}
|
|
|
|
indycam_regdump(client);
|
|
|
|
// white balance
|
|
err = indycam_write_reg(client, INDYCAM_REG_CONTROL,
|
|
INDYCAM_CONTROL_AGCENA | INDYCAM_CONTROL_AWBCTL);
|
|
if (err) {
|
|
printk(KERN_ERR "IndyCam: White balancing camera failed\n");
|
|
err = -EIO;
|
|
goto out_detach_client;
|
|
}
|
|
|
|
indycam_regdump(client);
|
|
|
|
printk(KERN_INFO "IndyCam initialized\n");
|
|
|
|
return 0;
|
|
|
|
out_detach_client:
|
|
i2c_detach_client(client);
|
|
out_free_camera:
|
|
kfree(camera);
|
|
out_free_client:
|
|
kfree(client);
|
|
return err;
|
|
}
|
|
|
|
static int indycam_probe(struct i2c_adapter *adap)
|
|
{
|
|
/* Indy specific crap */
|
|
if (adap->id == I2C_HW_SGI_VINO)
|
|
return indycam_attach(adap, INDYCAM_ADDR, 0);
|
|
/* Feel free to add probe here :-) */
|
|
return -ENODEV;
|
|
}
|
|
|
|
static int indycam_detach(struct i2c_client *client)
|
|
{
|
|
struct indycam *camera = i2c_get_clientdata(client);
|
|
|
|
i2c_detach_client(client);
|
|
kfree(camera);
|
|
kfree(client);
|
|
return 0;
|
|
}
|
|
|
|
static int indycam_command(struct i2c_client *client, unsigned int cmd,
|
|
void *arg)
|
|
{
|
|
// struct indycam *camera = i2c_get_clientdata(client);
|
|
|
|
/* The old video_decoder interface just isn't enough,
|
|
* so we'll use some custom commands. */
|
|
switch (cmd) {
|
|
case DECODER_GET_CAPABILITIES: {
|
|
struct video_decoder_capability *cap = arg;
|
|
|
|
cap->flags = VIDEO_DECODER_NTSC;
|
|
cap->inputs = 1;
|
|
cap->outputs = 1;
|
|
break;
|
|
}
|
|
case DECODER_GET_STATUS: {
|
|
int *iarg = arg;
|
|
|
|
*iarg = DECODER_STATUS_GOOD | DECODER_STATUS_NTSC |
|
|
DECODER_STATUS_COLOR;
|
|
break;
|
|
}
|
|
case DECODER_SET_NORM: {
|
|
int *iarg = arg;
|
|
|
|
switch (*iarg) {
|
|
case VIDEO_MODE_NTSC:
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
}
|
|
case DECODER_SET_INPUT: {
|
|
int *iarg = arg;
|
|
|
|
if (*iarg != 0)
|
|
return -EINVAL;
|
|
break;
|
|
}
|
|
case DECODER_SET_OUTPUT: {
|
|
int *iarg = arg;
|
|
|
|
if (*iarg != 0)
|
|
return -EINVAL;
|
|
break;
|
|
}
|
|
case DECODER_ENABLE_OUTPUT: {
|
|
/* Always enabled */
|
|
break;
|
|
}
|
|
case DECODER_SET_PICTURE: {
|
|
// struct video_picture *pic = arg;
|
|
/* TODO: convert values for indycam_set_controls() */
|
|
break;
|
|
}
|
|
case DECODER_INDYCAM_GET_CONTROL: {
|
|
return indycam_get_control(client, arg);
|
|
}
|
|
case DECODER_INDYCAM_SET_CONTROL: {
|
|
return indycam_set_control(client, arg);
|
|
}
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct i2c_driver i2c_driver_indycam = {
|
|
.driver = {
|
|
.name = "indycam",
|
|
},
|
|
.id = I2C_DRIVERID_INDYCAM,
|
|
.attach_adapter = indycam_probe,
|
|
.detach_client = indycam_detach,
|
|
.command = indycam_command,
|
|
};
|
|
|
|
static int __init indycam_init(void)
|
|
{
|
|
return i2c_add_driver(&i2c_driver_indycam);
|
|
}
|
|
|
|
static void __exit indycam_exit(void)
|
|
{
|
|
i2c_del_driver(&i2c_driver_indycam);
|
|
}
|
|
|
|
module_init(indycam_init);
|
|
module_exit(indycam_exit);
|