patch-2.4.25 linux-2.4.25/drivers/media/video/indycam.c
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- 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");
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