patch-2.4.25 linux-2.4.25/drivers/media/video/indycam.c

• Lines: 219
• Date: 2004-02-18 05:36:31.000000000 -0800
• Orig file: linux-2.4.24/drivers/media/video/indycam.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.24/drivers/media/video/indycam.c linux-2.4.25/drivers/media/video/indycam.c
@@ -0,0 +1,218 @@
+/* 
+ *  indycam.c - IndyCam digital camera driver
+ *
+ *  Copyright (C) 2003 Ladislav Michl <ladis@linux-mips.org>
+ *
+ *  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/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/sched.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 VINO_ADAPTER	(I2C_ALGO_SGI | I2C_HW_SGI_VINO)
+
+struct indycam {
+	struct i2c_client *client;
+	int version;
+};
+
+static struct i2c_driver i2c_driver_indycam;
+
+static int indycam_attach(struct i2c_adapter *adap, int addr, int kind)
+{
+	static const unsigned char initseq[] = {
+		0,
+		INDYCAM_CONTROL_AGCENA,	/* INDYCAM_CONTROL */
+		INDYCAM_SHUTTER_60,	/* INDYCAM_SHUTTER */
+		0x80,			/* INDYCAM_GAIN */
+		0xf0,			/* INDYCAM_BRIGHTNESS */
+		0x18,			/* INDYCAM_RED_BALANCE */
+		0xa4,			/* INDYCAM_BLUE_BALANCE */
+		0x80,			/* INDYCAM_RED_SATURATION */
+		0xc0,			/* INDYCAM_BLUE_SATURATION */
+		0x80,			/* INDYCAM_GAMMA */
+	};
+
+	int err = 0;
+	struct indycam *camera;
+	struct i2c_client *client;
+
+	client = kmalloc(sizeof(*client), GFP_KERNEL);
+	if (!client) 
+		return -ENOMEM;
+	camera = kmalloc(sizeof(*camera), GFP_KERNEL);
+	if (!camera) {
+		err = -ENOMEM;
+		goto out_free_client;
+	}
+
+	client->data = camera;
+	client->adapter = adap;
+	client->addr = addr;
+	client->driver = &i2c_driver_indycam;
+	strcpy(client->name, "IndyCam client");			
+	camera->client = client;
+
+	err = i2c_attach_client(client);
+	if (err)
+		goto out_free_camera;
+
+	camera->version = i2c_smbus_read_byte_data(client, INDYCAM_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));
+
+	err = i2c_master_send(client, initseq, sizeof(initseq));
+	if (err)
+		printk(KERN_INFO "IndyCam initalization failed\n");
+
+	MOD_INC_USE_COUNT;
+	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 == VINO_ADAPTER)
+		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 = client->data;
+
+	i2c_detach_client(client);
+	kfree(camera);
+	kfree(client);
+	MOD_DEC_USE_COUNT;
+	return 0;
+}
+
+static int indycam_command(struct i2c_client *client, unsigned int cmd,
+			   void *arg)
+{
+	struct indycam *camera = client->data;
+
+	switch (cmd) {
+
+	case DECODER_GET_CAPABILITIES: {
+		struct video_decoder_capability *cap = arg;
+
+		cap->flags  = VIDEO_DECODER_NTSC;
+		cap->inputs = 1;
+		cap->outputs = 1;
+		break;
+	}
+#if 0
+	case DECODER_GET_VERSION: {
+		int *iarg = arg;
+
+		*iarg = camera->version;
+		break;
+	}
+#endif
+	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 */
+		break;
+	}
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static struct i2c_driver i2c_driver_indycam = {
+	.name 		= "indycam",
+	.id 		= I2C_DRIVERID_INDYCAM,
+	.flags 		= I2C_DF_NOTIFY,
+	.attach_adapter = indycam_probe,
+	.detach_client 	= indycam_detach,
+	.command 	= indycam_command,
+};
+
+static int indycam_init(void)
+{
+	return i2c_add_driver(&i2c_driver_indycam);
+}
+
+static void indycam_exit(void)
+{
+	i2c_del_driver(&i2c_driver_indycam);
+}
+
+module_init(indycam_init);
+module_exit(indycam_exit);
+
+MODULE_DESCRIPTION("SGI IndyCam driver");
+MODULE_AUTHOR("Ladislav Michl <ladis@linux-mips.org>");
+MODULE_LICENSE("GPL");