From b980b509ab33e2634dd434001f3a184fe56a90d9 Mon Sep 17 00:00:00 2001 From: Rebecca Schultz Zavin Date: Wed, 28 Jul 2010 15:18:51 -0700 Subject: [PATCH] media: video: Add support for omnivision ov5650 for use with tegra isp Change-Id: Ifb306ff6818d46fac26d7a1a9261a4cc67d729ca Signed-off-by: Rebecca Schultz Zavin --- drivers/media/video/tegra/Kconfig | 7 + drivers/media/video/tegra/Makefile | 1 + drivers/media/video/tegra/ov5650.c | 597 +++++++++++++++++++++++++++++ include/media/ov5650.h | 44 +++ 4 files changed, 649 insertions(+) create mode 100644 drivers/media/video/tegra/ov5650.c create mode 100755 include/media/ov5650.h diff --git a/drivers/media/video/tegra/Kconfig b/drivers/media/video/tegra/Kconfig index e69de29bb2d1..7d59186a8c40 100644 --- a/drivers/media/video/tegra/Kconfig +++ b/drivers/media/video/tegra/Kconfig @@ -0,0 +1,7 @@ +config VIDEO_OV5650 + tristate "OV5650 camera sensor support" + depends on I2C && ARCH_TEGRA + ---help--- + This is a driver for the Omnivision OV5650 5MP camera sensor + for use with the tegra isp. + diff --git a/drivers/media/video/tegra/Makefile b/drivers/media/video/tegra/Makefile index 14375785f061..0092374433c0 100644 --- a/drivers/media/video/tegra/Makefile +++ b/drivers/media/video/tegra/Makefile @@ -2,3 +2,4 @@ # Makefile for the video capture/playback device drivers. # obj-y += tegra_isp.o +obj-$(CONFIG_VIDEO_OV5650) += ov5650.o diff --git a/drivers/media/video/tegra/ov5650.c b/drivers/media/video/tegra/ov5650.c new file mode 100644 index 000000000000..d2f1b147b3fb --- /dev/null +++ b/drivers/media/video/tegra/ov5650.c @@ -0,0 +1,597 @@ +/* + * ov5650.c - ov5650 sensor driver + * + * Copyright (C) 2010 Google Inc. + * + * Contributors: + * Rebecca Schultz Zavin + * + * Leverage OV9640.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 +#include +#include +#include +#include +#include +#include + +struct ov5650_reg { + u16 addr; + u16 val; +}; + +struct ov5650_info { + int mode; + struct i2c_client *i2c_client; + struct ov5650_platform_data *pdata; +}; + +#define OV5650_TABLE_WAIT_MS 0 +#define OV5650_TABLE_END 1 +#define OV5650_MAX_RETRIES 3 + +static struct ov5650_reg mode_start[] = { + {0x3008, 0x82}, /* reset registers pg 72 */ + {OV5650_TABLE_WAIT_MS, 5}, + {0x3008, 0x42}, /* register power down pg 72 */ + {OV5650_TABLE_WAIT_MS, 5}, + {0x3103, 0x93}, /* power up system clock from PLL page 77 */ + {0x3017, 0xff}, /* PAD output enable page 100 */ + {0x3018, 0xfc}, /* PAD output enable page 100 */ + + {0x3600, 0x50}, /* analog pg 108 */ + {0x3601, 0x0d}, /* analog pg 108 */ + {0x3604, 0x50}, /* analog pg 108 */ + {0x3605, 0x04}, /* analog pg 108 */ + {0x3606, 0x3f}, /* analog pg 108 */ + {0x3612, 0x1a}, /* analog pg 108 */ + {0x3630, 0x22}, /* analog pg 108 */ + {0x3631, 0x22}, /* analog pg 108 */ + {0x3702, 0x3a}, /* analog pg 108 */ + {0x3704, 0x18}, /* analog pg 108 */ + {0x3705, 0xda}, /* analog pg 108 */ + {0x3706, 0x41}, /* analog pg 108 */ + {0x370a, 0x80}, /* analog pg 108 */ + {0x370b, 0x40}, /* analog pg 108 */ + {0x370e, 0x00}, /* analog pg 108 */ + {0x3710, 0x28}, /* analog pg 108 */ + {0x3712, 0x13}, /* analog pg 108 */ + {0x3830, 0x50}, /* manual exposure gain bit [0] */ + {0x3a18, 0x00}, /* AEC gain ceiling bit 8 pg 114 */ + {0x3a19, 0xf8}, /* AEC gain ceiling pg 114 */ + {0x3a00, 0x38}, /* AEC control 0 debug mode band low + limit mode band func pg 112 */ + + {0x3603, 0xa7}, /* analog pg 108 */ + {0x3615, 0x50}, /* analog pg 108 */ + {0x3620, 0x56}, /* analog pg 108 */ + {0x3810, 0x00}, /* TIMING HVOFFS both are zero pg 80 */ + {0x3836, 0x00}, /* TIMING HVPAD both are zero pg 82 */ + {0x3a1a, 0x06}, /* DIFF MAX an AEC register??? pg 114 */ + {0x4000, 0x01}, /* BLC enabled pg 120 */ + {0x401c, 0x48}, /* reserved pg 120 */ + {0x401d, 0x28}, /* BLC control pg 120 */ + {0x5000, 0x00}, /* ISP control00 features are disabled. pg 132 */ + {0x5001, 0x00}, /* ISP control01 awb disabled. pg 132 */ + {0x5002, 0x00}, /* ISP control02 debug mode disabled pg 132 */ + {0x503d, 0x00}, /* ISP control3D features disabled pg 133 */ + {0x5046, 0x00}, /* ISP control isp disable awbg disable pg 133 */ + + {0x300f, 0x8f}, /* PLL control00 R_SELD5 [7:6] div by 4 R_DIVL [2] + two lane div 1 SELD2P5 [1:0] div 2.5 pg 99 */ + {0x3010, 0x10}, /* PLL control01 DIVM [3:0] DIVS [7:4] div 1 pg 99 */ + {0x3011, 0x14}, /* PLL control02 R_DIVP [5:0] div 20 pg 99 */ + {0x3012, 0x02}, /* PLL CTR 03, default */ + {0x3815, 0x82}, /* PCLK to SCLK ratio bit[4:0] is set to 2 pg 81 */ + {0x3503, 0x33}, /* AEC auto AGC auto gain has no latch delay. pg 38 */ + /* {FAST_SETMODE_START, 0}, */ + {0x3613, 0x44}, /* analog pg 108 */ + {OV5650_TABLE_END, 0x0}, +}; + +static const int mode_start_len = ARRAY_SIZE(mode_start); + +static struct ov5650_reg mode_2592x1944[] = { + {0x3621, 0x2f}, /* analog horizontal binning/sampling not enabled. + pg 108 */ + {0x3632, 0x55}, /* analog pg 108 */ + {0x3703, 0xe6}, /* analog pg 108 */ + {0x370c, 0xa0}, /* analog pg 108 */ + {0x370d, 0x04}, /* analog pg 108 */ + {0x3713, 0x2f}, /* analog pg 108 */ + {0x3800, 0x02}, /* HREF start point higher 4 bits [3:0] pg 108 */ + {0x3801, 0x58}, /* HREF start point lower 8 bits [7:0] pg 108 */ + {0x3802, 0x00}, /* VREF start point higher 4 bits [3:0] pg 108 */ + {0x3803, 0x0c}, /* VREF start point [7:0] pg 108 */ + {0x3804, 0x0a}, /* HREF width higher 4 bits [3:0] pg 108 */ + {0x3805, 0x20}, /* HREF width lower 8 bits [7:0] pg 108 */ + {0x3806, 0x07}, /* VREF height higher 4 bits [3:0] pg 109 */ + {0x3807, 0xa0}, /* VREF height lower 8 bits [7:0] pg 109 */ + {0x3808, 0x0a}, /* DVP horizontal output size higher 4 bits [3:0] + pg 109 */ + {0x3809, 0x20}, /* DVP horizontal output size lower 8 bits [7:0] + pg 109 */ + {0x380a, 0x07}, /* DVP vertical output size higher 4 bits [3:0] + pg 109 */ + {0x380b, 0xa0}, /* DVP vertical output size lower 8 bits [7:0] + pg 109 */ + {0x380c, 0x0c}, /* total horizontal size higher 5 bits [4:0] pg 109, + line length */ + {0x380d, 0xb4}, /* total horizontal size lower 8 bits [7:0] pg 109, + line length */ + {0x380e, 0x07}, /* total vertical size higher 5 bits [4:0] pg 109, + frame length */ + {0x380f, 0xb0}, /* total vertical size lower 8 bits [7:0] pg 109, + frame length */ + {0x3818, 0xc0}, /* timing control reg18 mirror & dkhf pg 110 */ + {0x381a, 0x3c}, /* HS mirror adjustment pg 110 */ + {0x3a0d, 0x06}, /* b60 max pg 113 */ + {0x3c01, 0x00}, /* 5060HZ_CTRL01 pg 116 */ + {0x3007, 0x3f}, /* clock enable03 pg 98 */ + {0x5059, 0x80}, /* => NOT found */ + {0x3003, 0x03}, /* reset MIPI and DVP pg 97 */ + {0x3500, 0x00}, /* long exp 1/3 in unit of 1/16 line, pg 38 */ + {0x3501, 0x7a}, /* long exp 2/3 in unit of 1/16 line, pg 38, + note frame length start with 0x7b0, + and SENSOR_BAYER_DEFAULT_MAX_COARSE_DIFF=3 */ + {0x3502, 0xd0}, /* long exp 3/3 in unit of 1/16 line, pg 38. + Two lines of integration time. */ + {0x350a, 0x00}, /* gain output to sensor, pg 38 */ + {0x350b, 0x00}, /* gain output to sensor, pg 38 */ + {0x4801, 0x0f}, /* MIPI control01 pg 125 */ + {0x300e, 0x0c}, /* SC_MIPI_SC_CTRL0 pg 73 */ + {0x4803, 0x50}, /* MIPI CTRL3 pg 91 */ + {0x4800, 0x14}, /* MIPI CTRl0 idle and short line pg 89 */ + {OV5650_TABLE_END, 0x0000} +}; + +static struct ov5650_reg mode_1296x972[] = { + {0x3621, 0xaf}, /* analog horizontal binning/sampling not enabled. + pg 108 */ + {0x3632, 0x5a}, /* analog pg 108 */ + {0x3703, 0xb0}, /* analog pg 108 */ + {0x370c, 0xc5}, /* analog pg 108 */ + {0x370d, 0x42}, /* analog pg 108 */ + {0x3713, 0x2f}, /* analog pg 108 */ + {0x3800, 0x03}, /* HREF start point higher 4 bits [3:0] pg 108 */ + {0x3801, 0x3c}, /* HREF start point lower 8 bits [7:0] pg 108 */ + {0x3802, 0x00}, /* VREF start point higher 4 bits [3:0] pg 108 */ + {0x3803, 0x06}, /* VREF start point [7:0] pg 108 */ + {0x3804, 0x05}, /* HREF width higher 4 bits [3:0] pg 108 */ + {0x3805, 0x10}, /* HREF width lower 8 bits [7:0] pg 108 */ + {0x3806, 0x03}, /* VREF height higher 4 bits [3:0] pg 109 */ + {0x3807, 0xd0}, /* VREF height lower 8 bits [7:0] pg 109 */ + {0x3808, 0x05}, /* DVP horizontal output size higher 4 bits [3:0] + pg 109 */ + {0x3809, 0x10}, /* DVP horizontal output size lower 8 bits [7:0] + pg 109 */ + {0x380a, 0x03}, /* DVP vertical output size higher 4 bits [3:0] + pg 109 */ + {0x380b, 0xd0}, /* DVP vertical output size lower 8 bits [7:0] + pg 109 */ + {0x380c, 0x08}, /* total horizontal size higher 5 bits [4:0] + pg 109, line length */ + {0x380d, 0xa8}, /* total horizontal size lower 8 bits [7:0] pg 109, + line length */ + {0x380e, 0x05}, /* total vertical size higher 5 bits [4:0] pg 109, + frame length */ + {0x380f, 0xa4}, /* total horizontal size lower 8 bits [7:0] pg 109, + frame length */ + {0x3818, 0xc1}, /* timing control reg18 mirror & dkhf pg 110 */ + {0x381a, 0x00}, /* HS mirror adjustment pg 110 */ + {0x3a0d, 0x08}, /* b60 max pg 113 */ + {0x3c01, 0x00}, /* 5060HZ_CTRL01 pg 116 */ + {0x3007, 0x3b}, /* clock enable03 pg 98 */ + {0x5059, 0x80}, /* => NOT found. added */ + {0x3003, 0x03}, /* reset MIPI and DVP pg 97 */ + {0x3500, 0x00}, /* long exp 1/3 in unit of 1/16 line, pg 38, + note frame length is from 0x5a4, + and SENSOR_BAYER_DEFAULT_MAX_COARSE_DIFF=3 */ + {0x3501, 0x5a}, /* long exp 2/3 in unit of 1/16 line, pg 38 */ + {0x3502, 0x10}, /* long exp 3/3 in unit of 1/16 line, pg 38 */ + {0x350a, 0x00}, /* gain output to sensor, pg 38 */ + {0x350b, 0x10}, /* gain output to sensor, pg 38 */ + {0x4801, 0x0f}, /* MIPI control01 pg 125 */ + {0x300e, 0x0c}, /* SC_MIPI_SC_CTRL0 pg 73 */ + {0x4803, 0x50}, /* MIPI CTRL3 pg 91 */ + {0x4800, 0x04}, /* MIPI CTRl0 idle and short line pg 89 */ + {OV5650_TABLE_END, 0x0000} +}; + +static struct ov5650_reg mode_1920x1088[] = { + {0x3621, 0x2f}, /* analog horizontal binning/sampling not enabled. + pg 108 */ + {0x3632, 0x55}, /* analog pg 108 */ + {0x3703, 0xe6}, /* analog pg 108 */ + {0x370c, 0xa0}, /* analog pg 108 */ + {0x370d, 0x04}, /* analog pg 108 */ + {0x3713, 0x2f}, /* analog pg 108 */ + {0x3800, 0x02}, /* HREF start point higher 4 bits [3:0] pg 108 */ + {0x3801, 0x58}, /* HREF start point lower 8 bits [7:0] pg 108 */ + {0x3802, 0x00}, /* VREF start point higher 4 bits [3:0] pg 108 */ + {0x3803, 0x0c}, /* VREF start point [7:0] pg 108 */ + {0x3804, 0x0a}, /* HREF width higher 4 bits [3:0] pg 108 */ + {0x3805, 0x20}, /* HREF width lower 8 bits [7:0] pg 108 */ + {0x3806, 0x07}, /* VREF height higher 4 bits [3:0] pg 109 */ + {0x3807, 0xa0}, /* VREF height lower 8 bits [7:0] pg 109 */ + {0x3808, 0x0a}, /* DVP horizontal output size higher 4 bits [3:0] + pg 109 */ + {0x3809, 0x20}, /* DVP horizontal output size lower 8 bits [7:0] + pg 109 */ + {0x380a, 0x07}, /* DVP vertical output size higher 4 bits [3:0] + pg 109 */ + {0x380b, 0xa0}, /* DVP vertical output size lower 8 bits [7:0] + pg 109 */ + {0x380c, 0x0c}, /* total horizontal size higher 5 bits [4:0] pg 109, + line length */ + {0x380d, 0xb4}, /* total horizontal size lower 8 bits [7:0] pg 109, + line length */ + {0x380e, 0x07}, /* total vertical size higher 5 bits [4:0] pg 109, + frame length */ + {0x380f, 0xb0}, /* total vertical size lower 8 bits [7:0] pg 109, + frame length */ + {0x3818, 0xc0}, /* timing control reg18 mirror & dkhf pg 110 */ + {0x381a, 0x3c}, /* HS mirror adjustment pg 110 */ + {0x3a0d, 0x06}, /* b60 max pg 113 */ + {0x3c01, 0x00}, /* 5060HZ_CTRL01 pg 116 */ + {0x3007, 0x3f}, /* clock enable03 pg 98 */ + {0x5059, 0x80}, /* => NOT found */ + {0x3003, 0x03}, /* reset MIPI and DVP pg 97 */ + {0x3500, 0x00}, /* long exp 1/3 in unit of 1/16 line, pg 38 */ + {0x3501, 0x7a}, /* long exp 2/3 in unit of 1/16 line, pg 38, + note frame length start with 0x7b0, + and SENSOR_BAYER_DEFAULT_MAX_COARSE_DIFF=3 */ + {0x3502, 0xd0}, /* long exp 3/3 in unit of 1/16 line, pg 38. + Two lines of integration time. */ + {0x350a, 0x00}, /* gain output to sensor, pg 38 */ + {0x350b, 0x00}, /* gain output to sensor, pg 38 */ + {0x4801, 0x0f}, /* MIPI control01 pg 125 */ + {0x300e, 0x0c}, /* SC_MIPI_SC_CTRL0 pg 73 */ + {0x4803, 0x50}, /* MIPI CTRL3 pg 91 */ + {0x4800, 0x14}, /* MIPI CTRl0 idle and short line pg 89 */ + {OV5650_TABLE_END, 0x0000} +}; + +static struct ov5650_reg mode_end[] = { + {0x3212, 0x00}, /* SRM_GROUP_ACCESS (group hold begin) */ + {0x3003, 0x01}, /* reset DVP pg 97 */ + {0x3212, 0x10}, /* SRM_GROUP_ACCESS (group hold end) */ + {0x3212, 0xa0}, /* SRM_GROUP_ACCESS (group hold launch) */ + {0x3008, 0x02}, /* SYSTEM_CTRL0 mipi suspend mask pg 98 */ + + /* {FAST_SETMODE_END, 0}, */ + {OV5650_TABLE_END, 0x0000} +}; + +enum { + OV5650_MODE_2592x1944, + OV5650_MODE_1296x972, + OV5650_MODE_1920x1088, +}; + +static struct ov5650_reg *mode_table[] = { + [OV5650_MODE_2592x1944] = mode_2592x1944, + [OV5650_MODE_1296x972] = mode_1296x972, + [OV5650_MODE_1920x1088] = mode_1920x1088, +}; + +static int ov5650_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 ov5650_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("ov5650: i2c transfer failed, retrying %x %x\n", + addr, val); + msleep(3); + } while (retry <= OV5650_MAX_RETRIES); + + return err; +} + +static int ov5650_write_table(struct i2c_client *client, + const struct ov5650_reg table[]) +{ + int err; + const struct ov5650_reg *next; + + for (next = table; next->addr != OV5650_TABLE_END; next++) { + if (next->addr == OV5650_TABLE_WAIT_MS) { + msleep(next->val); + continue; + } + + err = ov5650_write_reg(client, next->addr, next->val); + if (err) + return err; + } + return 0; +} + +static int ov5650_set_mode(struct ov5650_info *info, struct ov5650_mode *mode) +{ + int sensor_mode; + int err; + + pr_info("%s: xres %u yres %u\n", __func__, mode->xres, mode->yres); + if (mode->xres == 2592 && mode->yres == 1944) + sensor_mode = OV5650_MODE_2592x1944; + else if (mode->xres == 1296 && mode->yres == 972) + sensor_mode = OV5650_MODE_1296x972; + else if (mode->xres == 1920 && mode->yres == 1088) + sensor_mode = OV5650_MODE_1920x1088; + else { + pr_err("%s: invalid resolution supplied to set mode %d %d\n", + __func__, mode->xres, mode->yres); + return -EINVAL; + } + + err = ov5650_write_table(info->i2c_client, mode_start); + if (err) + return err; + err = ov5650_write_table(info->i2c_client, mode_table[sensor_mode]); + if (err) + return err; + err = ov5650_write_table(info->i2c_client, mode_end); + if (err) + return err; + info->mode = sensor_mode; + return 0; +} + +static int ov5650_set_frame_length(struct ov5650_info *info, u32 frame_length) +{ + pr_info("%s: exposure->frame_length %u\n", __func__, frame_length); + + /* XXX check errors here */ + /* update frame length*/ + ov5650_write_reg(info->i2c_client, 0x380e, (frame_length >> 8) & 0xff); + ov5650_write_reg(info->i2c_client, 0x380f, frame_length & 0xff); + + return 0; +} + +static int ov5650_set_coarse_time(struct ov5650_info *info, u32 coarse_time) +{ + pr_info("%s: exposure->coarse_time %u\n", __func__, coarse_time); + /* update coarse time */ + ov5650_write_reg(info->i2c_client, 0x3212, 0x01); + ov5650_write_reg(info->i2c_client, 0x3500, + (coarse_time >> 12) & 0xff); + ov5650_write_reg(info->i2c_client, 0x3501, + (coarse_time >> 4) & 0xff); + ov5650_write_reg(info->i2c_client, 0x3502, + (coarse_time & 0xf) << 4); + ov5650_write_reg(info->i2c_client, 0x3212, 0x11); + ov5650_write_reg(info->i2c_client, 0x3212, 0xa1); + + return 0; +} + +static int ov5650_set_gain(struct ov5650_info *info, u16 gain) +{ + pr_info("%s: gain %u\n", __func__, gain); + + /* update frame length*/ + ov5650_write_reg(info->i2c_client, 0x350b, gain); + + return 0; +} + +static int ov5650_get_status(struct ov5650_info *info, u8 *status) +{ + int err; + + *status = 0; + err = ov5650_read_reg(info->i2c_client, 0x002, status); + pr_info("%s: %u %d\n", __func__, *status, err); + return err; +} + + +static int ov5650_ioctl(struct inode *inode, struct file *file, + unsigned int cmd, unsigned long arg) +{ + struct ov5650_info *info = file->private_data; + pr_info("%s\n", __func__); + + switch (cmd) { + case OV5650_IOCTL_SET_MODE: + { + struct ov5650_mode mode; + if (copy_from_user(&mode, + (const void __user *)arg, + sizeof(struct ov5650_mode))) { + pr_info("%s %d\n", __func__, __LINE__); + return -EFAULT; + } + + return ov5650_set_mode(info, &mode); + } + case OV5650_IOCTL_SET_FRAME_LENGTH: + return ov5650_set_frame_length(info, (u32)arg); + case OV5650_IOCTL_SET_COARSE_TIME: + return ov5650_set_coarse_time(info, (u32)arg); + case OV5650_IOCTL_SET_GAIN: + return ov5650_set_gain(info, (u16)arg); + case OV5650_IOCTL_GET_STATUS: + { + int err; + u8 status; + + err = ov5650_get_status(info, &status); + if (err) + return err; + if (copy_to_user((void __user *)arg, &status, + 2)) { + pr_info("%s %d\n", __func__, __LINE__); + return -EFAULT; + } + return 0; + } + default: + return -EINVAL; + } + return 0; +} + +static struct ov5650_info *info; + +static int ov5650_open(struct inode *inode, struct file *file) +{ + u8 status; + + pr_info("%s\n", __func__); + file->private_data = info; + if (info->pdata && info->pdata->power_on) + info->pdata->power_on(); + ov5650_get_status(info, &status); + return 0; +} + +int ov5650_release(struct inode *inode, struct file *file) +{ + pr_info("%s\n", __func__); + if (info->pdata && info->pdata->power_off) + info->pdata->power_off(); + file->private_data = NULL; + return 0; +} + + +static const struct file_operations ov5650_fileops = { + .owner = THIS_MODULE, + .open = ov5650_open, + .ioctl = ov5650_ioctl, + .release = ov5650_release, +}; + +static struct miscdevice ov5650_device = { + .minor = MISC_DYNAMIC_MINOR, + .name = "ov5650", + .fops = &ov5650_fileops, +}; + +static int ov5650_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + int err; + + pr_info("ov5650: probing sensor.\n"); + + info = kzalloc(sizeof(struct ov5650_info), GFP_KERNEL); + if (!info) { + pr_err("ov5650: Unable to allocate memory!\n"); + return -ENOMEM; + } + + err = misc_register(&ov5650_device); + if (err) { + pr_err("ov5650: 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 ov5650_remove(struct i2c_client *client) +{ + struct ov5650_info *info; + info = i2c_get_clientdata(client); + misc_deregister(&ov5650_device); + kfree(info); + return 0; +} + +static const struct i2c_device_id ov5650_id[] = { + { "ov5650", 0 }, + { }, +}; + +MODULE_DEVICE_TABLE(i2c, ov5650_id); + +static struct i2c_driver ov5650_i2c_driver = { + .driver = { + .name = "ov5650", + .owner = THIS_MODULE, + }, + .probe = ov5650_probe, + .remove = ov5650_remove, + .id_table = ov5650_id, +}; + +static int __init ov5650_init(void) +{ + pr_info("ov5650 sensor driver loading\n"); + return i2c_add_driver(&ov5650_i2c_driver); +} + +static void __exit ov5650_exit(void) +{ + i2c_del_driver(&ov5650_i2c_driver); +} + +module_init(ov5650_init); +module_exit(ov5650_exit); + diff --git a/include/media/ov5650.h b/include/media/ov5650.h new file mode 100755 index 000000000000..2dce30a14653 --- /dev/null +++ b/include/media/ov5650.h @@ -0,0 +1,44 @@ +/* + * Copyright (C) 2010 Motorola, Inc. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307, USA + */ + +#ifndef __OV5650_H__ +#define __OV5650_H__ + +#include /* For IOCTL macros */ + +#define OV5650_IOCTL_SET_MODE _IOWR('o', 1, struct ov5650_mode) +#define OV5650_IOCTL_SET_FRAME_LENGTH _IOWR('o', 2, u32) +#define OV5650_IOCTL_SET_COARSE_TIME _IOWR('o', 3, u32) +#define OV5650_IOCTL_SET_GAIN _IOWR('o', 4, u16) +#define OV5650_IOCTL_GET_STATUS _IOR('o', 5, u8) + +struct ov5650_mode { + int xres; + int yres; +}; + +#ifdef __KERNEL__ +struct ov5650_platform_data { + int (*power_on)(void); + int (*power_off)(void); + +}; +#endif /* __KERNEL__ */ + +#endif /* __OV5650_H__ */ + -- 2.34.1