Added missing tegra files.HEADmaster

1 files changed, 401 insertions, 0 deletions

diff --git a/drivers/media/video/indycam.c b/drivers/media/video/indycam.c
new file mode 100644
index 00000000000..e5ed4db32e7
--- /dev/null
+++ b/drivers/media/video/indycam.c
@@ -0,0 +1,401 @@
+/*
+ *  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 <media/v4l2-chip-ident.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, &reg);
+                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, &reg);
+                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, &reg);
+                if (ret)
+                        return -EIO;
+                ctrl->value = (s32)reg;
+                break;
+        case V4L2_CID_RED_BALANCE:
+                ret = indycam_read_reg(sd, INDYCAM_REG_RED_BALANCE, &reg);
+                if (ret)
+                        return -EIO;
+                ctrl->value = (s32)reg;
+                break;
+        case V4L2_CID_BLUE_BALANCE:
+                ret = indycam_read_reg(sd, INDYCAM_REG_BLUE_BALANCE, &reg);
+                if (ret)
+                        return -EIO;
+                ctrl->value = (s32)reg;
+                break;
+        case INDYCAM_CONTROL_RED_SATURATION:
+                ret = indycam_read_reg(sd,
+                                       INDYCAM_REG_RED_SATURATION, &reg);
+                if (ret)
+                        return -EIO;
+                ctrl->value = (s32)reg;
+                break;
+        case INDYCAM_CONTROL_BLUE_SATURATION:
+                ret = indycam_read_reg(sd,
+                                       INDYCAM_REG_BLUE_SATURATION, &reg);
+                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, &reg);
+                        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, &reg);
+                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 int indycam_g_chip_ident(struct v4l2_subdev *sd,
+                struct v4l2_dbg_chip_ident *chip)
+{
+        struct i2c_client *client = v4l2_get_subdevdata(sd);
+        struct indycam *camera = to_indycam(sd);
+
+        return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_INDYCAM,
+                       camera->version);
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const struct v4l2_subdev_core_ops indycam_core_ops = {
+        .g_chip_ident = indycam_g_chip_ident,
+        .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,
+};
+
+static __init int init_indycam(void)
+{
+        return i2c_add_driver(&indycam_driver);
+}
+
+static __exit void exit_indycam(void)
+{
+        i2c_del_driver(&indycam_driver);
+}
+
+module_init(init_indycam);
+module_exit(exit_indycam);