1 files changed, 690 insertions, 0 deletions

diff --git a/drivers/media/video/tegra/ov2710.c b/drivers/media/video/tegra/ov2710.c
new file mode 100644
index 00000000000..a2e02369d8e
--- /dev/null
+++ b/drivers/media/video/tegra/ov2710.c
@@ -0,0 +1,690 @@
+/*
+ * ov2710.c - ov2710 sensor driver
+ *
+ * Copyright (c) 2011, NVIDIA, All Rights Reserved.
+ *
+ * Contributors:
+ *      erik lilliebjerg <elilliebjerg@nvidia.com>
+ *
+ * Leverage OV5650.c
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/delay.h>
+#include <linux/fs.h>
+#include <linux/i2c.h>
+#include <linux/miscdevice.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+#include <media/ov2710.h>
+
+struct ov2710_reg {
+        u16 addr;
+        u16 val;
+};
+
+struct ov2710_info {
+        int mode;
+        struct i2c_client *i2c_client;
+        struct ov2710_platform_data *pdata;
+};
+
+#define OV2710_TABLE_WAIT_MS 0
+#define OV2710_TABLE_END 1
+#define OV2710_MAX_RETRIES 3
+
+static struct ov2710_reg mode_1920x1080[] = {
+        {0x3103, 0x93},
+        {0x3008, 0x82},
+        {OV2710_TABLE_WAIT_MS, 5},
+        {0x3008, 0x42},
+        {OV2710_TABLE_WAIT_MS, 5},
+        {0x3017, 0x7f},
+        {0x3018, 0xfc},
+        {0x3706, 0x61},
+        {0x3712, 0x0c},
+        {0x3630, 0x6d},
+        {0x3801, 0xb4},
+
+        {0x3621, 0x04},
+        {0x3604, 0x60},
+        {0x3603, 0xa7},
+        {0x3631, 0x26},
+        {0x3600, 0x04},
+        {0x3620, 0x37},
+        {0x3623, 0x00},
+        {0x3702, 0x9e},
+        {0x3703, 0x5c},
+        {0x3704, 0x40},
+        {0x370d, 0x0f},
+        {0x3713, 0x9f},
+        {0x3714, 0x4c},
+        {0x3710, 0x9e},
+        {0x3801, 0xc4},
+        {0x3605, 0x05},
+        {0x3606, 0x3f},
+        {0x302d, 0x90},
+        {0x370b, 0x40},
+        {0x3716, 0x31},
+        {0x3707, 0x52},
+        {0x380d, 0x74},
+        {0x5181, 0x20},
+        {0x518f, 0x00},
+        {0x4301, 0xff},
+        {0x4303, 0x00},
+        {0x3a00, 0x78},
+        {0x300f, 0x88},
+        {0x3011, 0x28},
+        {0x3a1a, 0x06},
+        {0x3a18, 0x00},
+        {0x3a19, 0x7a},
+        {0x3a13, 0x54},
+        {0x382e, 0x0f},
+        {0x381a, 0x1a},
+        {0x401d, 0x02},
+
+        {0x381c, 0x00},
+        {0x381d, 0x02},
+        {0x381e, 0x04},
+        {0x381f, 0x38},
+        {0x3820, 0x00},
+        {0x3821, 0x98},
+        {0x3800, 0x01},
+        {0x3802, 0x00},
+        {0x3803, 0x0a},
+        {0x3804, 0x07},
+        {0x3805, 0x90},
+        {0x3806, 0x04},
+        {0x3807, 0x40},
+        {0x3808, 0x07},
+        {0x3809, 0x90},
+        {0x380a, 0x04},
+        {0x380b, 0x40},
+        {0x380e, 0x04},
+        {0x380f, 0x50},
+        {0x380c, 0x09},
+        {0x380d, 0x74},
+        {0x3810, 0x08},
+        {0x3811, 0x02},
+
+        {0x5688, 0x03},
+        {0x5684, 0x07},
+        {0x5685, 0xa0},
+        {0x5686, 0x04},
+        {0x5687, 0x43},
+        {0x3011, 0x0a},
+        {0x300f, 0x8a},
+        {0x3017, 0x00},
+        {0x3018, 0x00},
+        {0x4800, 0x24},
+        {0x300e, 0x04},
+        {0x4801, 0x0f},
+
+        {0x300f, 0xc3},
+        {0x3010, 0x00},
+        {0x3011, 0x0a},
+        {0x3012, 0x01},
+
+        {0x3a0f, 0x40},
+        {0x3a10, 0x38},
+        {0x3a1b, 0x48},
+        {0x3a1e, 0x30},
+        {0x3a11, 0x90},
+        {0x3a1f, 0x10},
+
+        {0x3a0e, 0x03},
+        {0x3a0d, 0x04},
+        {0x3a08, 0x14},
+        {0x3a09, 0xc0},
+        {0x3a0a, 0x11},
+        {0x3a0b, 0x40},
+
+        {0x300f, 0xc3},
+        {0x3010, 0x00},
+        {0x3011, 0x0e},
+        {0x3012, 0x02},
+        {0x380c, 0x09},
+        {0x380d, 0xec},
+        {0x3703, 0x61},
+        {0x3704, 0x44},
+        {0x3801, 0xd2},
+
+        {0x3503, 0x17},
+        {0x3500, 0x00},
+        {0x3501, 0x00},
+        {0x3502, 0x00},
+        {0x350a, 0x00},
+        {0x350b, 0x00},
+        {0x5001, 0x4e},
+        {0x5000, 0x5f},
+        {0x3008, 0x02},
+
+        {OV2710_TABLE_END, 0x0000}
+};
+
+static struct ov2710_reg mode_1280x720[] = {
+        {0x3103, 0x93},
+        {0x3008, 0x82},
+        {OV2710_TABLE_WAIT_MS, 5},
+        {0x3008, 0x42},
+        {OV2710_TABLE_WAIT_MS, 5},
+        {0x3017, 0x7f},
+        {0x3018, 0xfc},
+
+        {0x3706, 0x61},
+        {0x3712, 0x0c},
+        {0x3630, 0x6d},
+        {0x3801, 0xb4},
+        {0x3621, 0x04},
+        {0x3604, 0x60},
+        {0x3603, 0xa7},
+        {0x3631, 0x26},
+        {0x3600, 0x04},
+        {0x3620, 0x37},
+        {0x3623, 0x00},
+        {0x3702, 0x9e},
+        {0x3703, 0x5c},
+        {0x3704, 0x40},
+        {0x370d, 0x0f},
+        {0x3713, 0x9f},
+        {0x3714, 0x4c},
+        {0x3710, 0x9e},
+        {0x3801, 0xc4},
+        {0x3605, 0x05},
+        {0x3606, 0x3f},
+        {0x302d, 0x90},
+        {0x370b, 0x40},
+        {0x3716, 0x31},
+        {0x3707, 0x52},
+        {0x380d, 0x74},
+        {0x5181, 0x20},
+        {0x518f, 0x00},
+        {0x4301, 0xff},
+        {0x4303, 0x00},
+        {0x3a00, 0x78},
+        {0x300f, 0x88},
+        {0x3011, 0x28},
+        {0x3a1a, 0x06},
+        {0x3a18, 0x00},
+        {0x3a19, 0x7a},
+        {0x3a13, 0x54},
+        {0x382e, 0x0f},
+        {0x381a, 0x1a},
+        {0x401d, 0x02},
+
+        {0x381c, 0x10},
+        {0x381d, 0xb0},
+        {0x381e, 0x02},
+        {0x381f, 0xec},
+        {0x3800, 0x01},
+        {0x3820, 0x0a},
+        {0x3821, 0x2a},
+        {0x3804, 0x05},
+        {0x3805, 0x10},
+        {0x3802, 0x00},
+        {0x3803, 0x04},
+        {0x3806, 0x02},
+        {0x3807, 0xe0},
+        {0x3808, 0x05},
+        {0x3809, 0x10},
+        {0x380a, 0x02},
+        {0x380b, 0xe0},
+        {0x380e, 0x02},
+        {0x380f, 0xf0},
+        {0x380c, 0x07},
+        {0x380d, 0x00},
+        {0x3810, 0x10},
+        {0x3811, 0x06},
+
+        {0x5688, 0x03},
+        {0x5684, 0x05},
+        {0x5685, 0x00},
+        {0x5686, 0x02},
+        {0x5687, 0xd0},
+
+        {0x3a08, 0x1b},
+        {0x3a09, 0xe6},
+        {0x3a0a, 0x17},
+        {0x3a0b, 0x40},
+        {0x3a0e, 0x01},
+        {0x3a0d, 0x02},
+        {0x3011, 0x0a},
+        {0x300f, 0x8a},
+        {0x3017, 0x00},
+        {0x3018, 0x00},
+        {0x4800, 0x24},
+        {0x300e, 0x04},
+        {0x4801, 0x0f},
+        {0x300f, 0xc3},
+        {0x3a0f, 0x40},
+        {0x3a10, 0x38},
+        {0x3a1b, 0x48},
+        {0x3a1e, 0x30},
+        {0x3a11, 0x90},
+        {0x3a1f, 0x10},
+
+        {0x3010, 0x10},
+        {0x3a0e, 0x02},
+        {0x3a0d, 0x03},
+        {0x3a08, 0x0d},
+        {0x3a09, 0xf3},
+        {0x3a0a, 0x0b},
+        {0x3a0b, 0xa0},
+
+        {0x300f, 0xc3},
+        {0x3011, 0x0e},
+        {0x3012, 0x02},
+        {0x380c, 0x07},
+        {0x380d, 0x6a},
+        {0x3703, 0x5c},
+        {0x3704, 0x40},
+        {0x3801, 0xbc},
+
+        {0x3503, 0x17},
+        {0x3500, 0x00},
+        {0x3501, 0x00},
+        {0x3502, 0x00},
+        {0x350a, 0x00},
+        {0x350b, 0x00},
+        {0x5001, 0x4e},
+        {0x5000, 0x5f},
+        {0x3008, 0x02},
+
+        {OV2710_TABLE_END, 0x0000}
+};
+
+enum {
+        OV2710_MODE_1920x1080,
+        OV2710_MODE_1280x720,
+};
+
+
+static struct ov2710_reg *mode_table[] = {
+        [OV2710_MODE_1920x1080] = mode_1920x1080,
+        [OV2710_MODE_1280x720] = mode_1280x720,
+};
+
+static inline void ov2710_get_frame_length_regs(struct ov2710_reg *regs,
+                                                u32 frame_length)
+{
+        regs->addr = 0x380e;
+        regs->val = (frame_length >> 8) & 0xff;
+        (regs + 1)->addr = 0x380f;
+        (regs + 1)->val = (frame_length) & 0xff;
+}
+
+static inline void ov2710_get_coarse_time_regs(struct ov2710_reg *regs,
+                                               u32 coarse_time)
+{
+        regs->addr = 0x3500;
+        regs->val = (coarse_time >> 12) & 0xff;
+        (regs + 1)->addr = 0x3501;
+        (regs + 1)->val = (coarse_time >> 4) & 0xff;
+        (regs + 2)->addr = 0x3502;
+        (regs + 2)->val = (coarse_time & 0xf) << 4;
+}
+
+static inline void ov2710_get_gain_reg(struct ov2710_reg *regs, u16 gain)
+{
+        regs->addr = 0x350b;
+        regs->val = gain;
+}
+
+static int ov2710_read_reg(struct i2c_client *client, u16 addr, u8 *val)
+{
+        int err;
+        struct i2c_msg msg[2];
+        unsigned char data[3];
+
+        if (!client->adapter)
+                return -ENODEV;
+
+        msg[0].addr = client->addr;
+        msg[0].flags = 0;
+        msg[0].len = 2;
+        msg[0].buf = data;
+
+        /* high byte goes out first */
+        data[0] = (u8) (addr >> 8);;
+        data[1] = (u8) (addr & 0xff);
+
+        msg[1].addr = client->addr;
+        msg[1].flags = I2C_M_RD;
+        msg[1].len = 1;
+        msg[1].buf = data + 2;
+
+        err = i2c_transfer(client->adapter, msg, 2);
+
+        if (err != 2)
+
+                return -EINVAL;
+
+        *val = data[2];
+
+        return 0;
+}
+
+static int ov2710_write_reg(struct i2c_client *client, u16 addr, u8 val)
+{
+        int err;
+        struct i2c_msg msg;
+        unsigned char data[3];
+        int retry = 0;
+
+        if (!client->adapter)
+                return -ENODEV;
+
+        data[0] = (u8) (addr >> 8);;
+        data[1] = (u8) (addr & 0xff);
+        data[2] = (u8) (val & 0xff);
+
+        msg.addr = client->addr;
+        msg.flags = 0;
+        msg.len = 3;
+        msg.buf = data;
+
+        do {
+                err = i2c_transfer(client->adapter, &msg, 1);
+                if (err == 1)
+                        return 0;
+                retry++;
+                pr_err("ov2710: i2c transfer failed, retrying %x %x\n",
+                       addr, val);
+
+                msleep(3);
+        } while (retry <= OV2710_MAX_RETRIES);
+
+        return err;
+}
+
+static int ov2710_write_table(struct i2c_client *client,
+                              const struct ov2710_reg table[],
+                              const struct ov2710_reg override_list[],
+                              int num_override_regs)
+{
+        int err;
+        const struct ov2710_reg *next;
+        int i;
+        u16 val;
+
+        for (next = table; next->addr != OV2710_TABLE_END; next++) {
+                if (next->addr == OV2710_TABLE_WAIT_MS) {
+                        msleep(next->val);
+                        continue;
+                }
+
+
+                val = next->val;
+
+                /* When an override list is passed in, replace the reg */
+                /* value to write if the reg is in the list            */
+                if (override_list) {
+                        for (i = 0; i < num_override_regs; i++) {
+                                if (next->addr == override_list[i].addr) {
+                                        val = override_list[i].val;
+                                        break;
+                                }
+                        }
+                }
+
+                err = ov2710_write_reg(client, next->addr, val);
+                if (err)
+                        return err;
+        }
+        return 0;
+}
+
+static int ov2710_set_mode(struct ov2710_info *info, struct ov2710_mode *mode)
+{
+        int sensor_mode;
+        int err;
+        struct ov2710_reg reg_list[6];
+
+        pr_info("%s: xres %u yres %u framelength %u coarsetime %u gain %u\n",
+                __func__, mode->xres, mode->yres, mode->frame_length,
+                mode->coarse_time, mode->gain);
+
+        if (mode->xres == 1920 && mode->yres == 1080)
+                sensor_mode = OV2710_MODE_1920x1080;
+        else if (mode->xres == 1280 && mode->yres == 720)
+                sensor_mode = OV2710_MODE_1280x720;
+        else {
+                pr_err("%s: invalid resolution supplied to set mode %d %d\n",
+                       __func__, mode->xres, mode->yres);
+                return -EINVAL;
+        }
+
+        /* get a list of override regs for the asking frame length, */
+        /* coarse integration time, and gain.                       */
+        ov2710_get_frame_length_regs(reg_list, mode->frame_length);
+        ov2710_get_coarse_time_regs(reg_list + 2, mode->coarse_time);
+        ov2710_get_gain_reg(reg_list + 5, mode->gain);
+
+        err = ov2710_write_table(info->i2c_client, mode_table[sensor_mode],
+        reg_list, 6);
+        if (err)
+                return err;
+
+        info->mode = sensor_mode;
+        return 0;
+}
+
+static int ov2710_set_frame_length(struct ov2710_info *info, u32 frame_length)
+{
+        struct ov2710_reg reg_list[2];
+        int i = 0;
+        int ret;
+
+        ov2710_get_frame_length_regs(reg_list, frame_length);
+
+        for (i = 0; i < 2; i++) {
+                ret = ov2710_write_reg(info->i2c_client, reg_list[i].addr,
+                        reg_list[i].val);
+                if (ret)
+                        return ret;
+        }
+
+        return 0;
+}
+
+static int ov2710_set_coarse_time(struct ov2710_info *info, u32 coarse_time)
+{
+        int ret;
+
+        struct ov2710_reg reg_list[3];
+        int i = 0;
+
+        ov2710_get_coarse_time_regs(reg_list, coarse_time);
+
+        ret = ov2710_write_reg(info->i2c_client, 0x3212, 0x01);
+        if (ret)
+                return ret;
+
+        for (i = 0; i < 3; i++) {
+                ret = ov2710_write_reg(info->i2c_client, reg_list[i].addr,
+                        reg_list[i].val);
+                if (ret)
+                        return ret;
+        }
+
+        ret = ov2710_write_reg(info->i2c_client, 0x3212, 0x11);
+        if (ret)
+                return ret;
+
+        ret = ov2710_write_reg(info->i2c_client, 0x3212, 0xa1);
+        if (ret)
+                return ret;
+
+        return 0;
+}
+
+static int ov2710_set_gain(struct ov2710_info *info, u16 gain)
+{
+        int ret;
+        struct ov2710_reg reg_list;
+
+        ov2710_get_gain_reg(&reg_list, gain);
+
+        ret = ov2710_write_reg(info->i2c_client, reg_list.addr, reg_list.val);
+
+        return ret;
+}
+
+static int ov2710_get_status(struct ov2710_info *info, u8 *status)
+{
+        int err;
+
+        *status = 0;
+        err = ov2710_read_reg(info->i2c_client, 0x002, status);
+        return err;
+}
+
+
+static long ov2710_ioctl(struct file *file,
+                         unsigned int cmd, unsigned long arg)
+{
+        int err;
+        struct ov2710_info *info = file->private_data;
+
+        switch (cmd) {
+        case OV2710_IOCTL_SET_MODE:
+        {
+                struct ov2710_mode mode;
+                if (copy_from_user(&mode,
+                                   (const void __user *)arg,
+                                   sizeof(struct ov2710_mode))) {
+                        return -EFAULT;
+                }
+
+                return ov2710_set_mode(info, &mode);
+        }
+        case OV2710_IOCTL_SET_FRAME_LENGTH:
+                return ov2710_set_frame_length(info, (u32)arg);
+        case OV2710_IOCTL_SET_COARSE_TIME:
+                return ov2710_set_coarse_time(info, (u32)arg);
+        case OV2710_IOCTL_SET_GAIN:
+                return ov2710_set_gain(info, (u16)arg);
+        case OV2710_IOCTL_GET_STATUS:
+        {
+                u8 status;
+
+                err = ov2710_get_status(info, &status);
+                if (err)
+                        return err;
+                if (copy_to_user((void __user *)arg, &status,
+                                 2)) {
+                        return -EFAULT;
+                }
+                return 0;
+        }
+        default:
+                return -EINVAL;
+        }
+        return 0;
+}
+
+static struct ov2710_info *info;
+
+static int ov2710_open(struct inode *inode, struct file *file)
+{
+        u8 status;
+
+        file->private_data = info;
+        if (info->pdata && info->pdata->power_on)
+                info->pdata->power_on();
+        ov2710_get_status(info, &status);
+        return 0;
+}
+
+int ov2710_release(struct inode *inode, struct file *file)
+{
+        if (info->pdata && info->pdata->power_off)
+                info->pdata->power_off();
+        file->private_data = NULL;
+        return 0;
+}
+
+
+static const struct file_operations ov2710_fileops = {
+        .owner = THIS_MODULE,
+        .open = ov2710_open,
+        .unlocked_ioctl = ov2710_ioctl,
+        .release = ov2710_release,
+};
+
+static struct miscdevice ov2710_device = {
+        .minor = MISC_DYNAMIC_MINOR,
+        .name = "ov2710",
+        .fops = &ov2710_fileops,
+};
+
+static int ov2710_probe(struct i2c_client *client,
+                        const struct i2c_device_id *id)
+{
+        int err;
+
+        pr_info("ov2710: probing sensor.\n");
+
+        info = kzalloc(sizeof(struct ov2710_info), GFP_KERNEL);
+        if (!info) {
+                pr_err("ov2710: Unable to allocate memory!\n");
+                return -ENOMEM;
+        }
+
+        err = misc_register(&ov2710_device);
+        if (err) {
+                pr_err("ov2710: Unable to register misc device!\n");
+                kfree(info);
+                return err;
+        }
+
+        info->pdata = client->dev.platform_data;
+        info->i2c_client = client;
+
+        i2c_set_clientdata(client, info);
+        return 0;
+}
+
+static int ov2710_remove(struct i2c_client *client)
+{
+        struct ov2710_info *info;
+        info = i2c_get_clientdata(client);
+        misc_deregister(&ov2710_device);
+        kfree(info);
+        return 0;
+}
+
+static const struct i2c_device_id ov2710_id[] = {
+        { "ov2710", 0 },
+        { },
+};
+
+MODULE_DEVICE_TABLE(i2c, ov2710_id);
+
+static struct i2c_driver ov2710_i2c_driver = {
+        .driver = {
+                .name = "ov2710",
+                .owner = THIS_MODULE,
+        },
+        .probe = ov2710_probe,
+        .remove = ov2710_remove,
+        .id_table = ov2710_id,
+};
+
+static int __init ov2710_init(void)
+{
+        pr_info("ov2710 sensor driver loading\n");
+        return i2c_add_driver(&ov2710_i2c_driver);
+}
+
+static void __exit ov2710_exit(void)
+{
+        i2c_del_driver(&ov2710_i2c_driver);
+}
+
+module_init(ov2710_init);
+module_exit(ov2710_exit);
+