/* * Copyright (C) 2011-2012 Freescale Semiconductor, Inc. All Rights Reserved. */ /* * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * 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., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mxc_v4l2_capture.h" #define OV8820_VOLTAGE_ANALOG 2800000 #define OV8820_VOLTAGE_DIGITAL_CORE 1500000 #define OV8820_VOLTAGE_DIGITAL_IO 1800000 #define MIN_FPS 15 #define MAX_FPS 30 #define DEFAULT_FPS 30 #define OV8820_XCLK_MIN 6000000 #define OV8820_XCLK_MAX 24000000 enum ov8820_mode { ov8820_mode_MIN = 0, ov8820_mode_480_480 = 0, ov8820_mode_MAX = 0 }; enum ov8820_frame_rate { ov8820_15_fps, ov8820_30_fps }; struct reg_value { u16 u16RegAddr; u8 u8Val; u8 u8Mask; u32 u32Delay_ms; }; struct ov8820_mode_info { enum ov8820_mode mode; u32 width; u32 height; struct reg_value *init_data_ptr; u32 init_data_size; }; /*! * Maintains the information on the current state of the sesor. */ static struct sensor { const struct ov8820_platform_data *platform_data; struct v4l2_int_device *v4l2_int_device; struct i2c_client *i2c_client; struct v4l2_pix_format pix; struct v4l2_captureparm streamcap; bool on; /* control settings */ int brightness; int hue; int contrast; int saturation; int red; int green; int blue; int ae_mode; u32 mclk; u8 mclk_source; int csi; } ov8820_data; static struct reg_value ov8820_setting_30fps_480_480[] = { {0x0103, 0x01, 0, 5}, {0x3000, 0x02, 0, 0}, {0x3001, 0x00, 0, 0}, {0x3002, 0x6c, 0, 0}, {0x300d, 0x00, 0, 0}, {0x301f, 0x09, 0, 0}, {0x3010, 0x00, 0, 0}, {0x3018, 0x00, 0, 0}, {0x3300, 0x00, 0, 0}, {0x3500, 0x00, 0, 0}, {0x3503, 0x07, 0, 0}, {0x3509, 0x00, 0, 0}, {0x3600, 0x08, 0, 0}, {0x3601, 0x44, 0, 0}, {0x3602, 0x75, 0, 0}, {0x3603, 0x5c, 0, 0}, {0x3604, 0x98, 0, 0}, {0x3605, 0xe9, 0, 0}, {0x3609, 0xb8, 0, 0}, {0x360a, 0xbc, 0, 0}, {0x360b, 0xb4, 0, 0}, {0x360c, 0x0d, 0, 0}, {0x3613, 0x02, 0, 0}, {0x3614, 0x0f, 0, 0}, {0x3615, 0x00, 0, 0}, {0x3616, 0x03, 0, 0}, {0x3617, 0x01, 0, 0}, {0x3618, 0x00, 0, 0}, {0x3619, 0x00, 0, 0}, {0x361a, 0x00, 0, 0}, {0x361b, 0x00, 0, 0}, {0x3700, 0x20, 0, 0}, {0x3701, 0x44, 0, 0}, {0x3702, 0x50, 0, 0}, {0x3703, 0xcc, 0, 0}, {0x3704, 0x19, 0, 0}, {0x3706, 0x4b, 0, 0}, {0x3707, 0x63, 0, 0}, {0x3708, 0x84, 0, 0}, {0x3709, 0x40, 0, 0}, {0x370b, 0x01, 0, 0}, {0x370c, 0x50, 0, 0}, {0x370d, 0x0c, 0, 0}, {0x370e, 0x00, 0, 0}, {0x3711, 0x01, 0, 0}, {0x3712, 0x9c, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3804, 0x0c, 0, 0}, {0x3810, 0x00, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3816, 0x02, 0, 0}, {0x3817, 0x40, 0, 0}, {0x3818, 0x00, 0, 0}, {0x3819, 0x40, 0, 0}, {0x3d00, 0x00, 0, 0}, {0x3d01, 0x00, 0, 0}, {0x3d02, 0x00, 0, 0}, {0x3d03, 0x00, 0, 0}, {0x3d04, 0x00, 0, 0}, {0x3d05, 0x00, 0, 0}, {0x3d06, 0x00, 0, 0}, {0x3d07, 0x00, 0, 0}, {0x3d08, 0x00, 0, 0}, {0x3d09, 0x00, 0, 0}, {0x3d0a, 0x00, 0, 0}, {0x3d0b, 0x00, 0, 0}, {0x3d0c, 0x00, 0, 0}, {0x3d0d, 0x00, 0, 0}, {0x3d0e, 0x00, 0, 0}, {0x3d0f, 0x00, 0, 0}, {0x3d10, 0x00, 0, 0}, {0x3d11, 0x00, 0, 0}, {0x3d12, 0x00, 0, 0}, {0x3d13, 0x00, 0, 0}, {0x3d14, 0x00, 0, 0}, {0x3d15, 0x00, 0, 0}, {0x3d16, 0x00, 0, 0}, {0x3d17, 0x00, 0, 0}, {0x3d18, 0x00, 0, 0}, {0x3d19, 0x00, 0, 0}, {0x3d1a, 0x00, 0, 0}, {0x3d1b, 0x00, 0, 0}, {0x3d1c, 0x00, 0, 0}, {0x3d1d, 0x00, 0, 0}, {0x3d1e, 0x00, 0, 0}, {0x3d1f, 0x00, 0, 0}, {0x3d80, 0x00, 0, 0}, {0x3d81, 0x00, 0, 0}, {0x3d84, 0x00, 0, 0}, {0x3f01, 0xfc, 0, 0}, {0x3f05, 0x10, 0, 0}, {0x3f06, 0x00, 0, 0}, {0x3f07, 0x00, 0, 0}, {0x4000, 0x29, 0, 0}, {0x4001, 0x02, 0, 0}, {0x4002, 0x45, 0, 0}, {0x4003, 0x08, 0, 0}, {0x4004, 0x04, 0, 0}, {0x4005, 0x18, 0, 0}, {0x4300, 0xff, 0, 0}, {0x4303, 0x00, 0, 0}, {0x4304, 0x08, 0, 0}, {0x4307, 0x00, 0, 0}, {0x4800, 0x04, 0, 0}, {0x4801, 0x0f, 0, 0}, {0x4843, 0x02, 0, 0}, {0x5000, 0x00, 0, 0}, {0x5001, 0x00, 0, 0}, {0x5002, 0x00, 0, 0}, {0x501f, 0x00, 0, 0}, {0x5c00, 0x80, 0, 0}, {0x5c01, 0x00, 0, 0}, {0x5c02, 0x00, 0, 0}, {0x5c03, 0x00, 0, 0}, {0x5c04, 0x00, 0, 0}, {0x5c05, 0x00, 0, 0}, {0x5c06, 0x00, 0, 0}, {0x5c07, 0x80, 0, 0}, {0x5c08, 0x10, 0, 0}, {0x6700, 0x05, 0, 0}, {0x6701, 0x19, 0, 0}, {0x6702, 0xfd, 0, 0}, {0x6703, 0xd1, 0, 0}, {0x6704, 0xff, 0, 0}, {0x6705, 0xff, 0, 0}, {0x6800, 0x10, 0, 0}, {0x6801, 0x02, 0, 0}, {0x6802, 0x90, 0, 0}, {0x6803, 0x10, 0, 0}, {0x6804, 0x59, 0, 0}, {0x6900, 0x61, 0, 0}, {0x6901, 0x04, 0, 0}, {0x3612, 0x00, 0, 0}, {0x3617, 0xa1, 0, 0}, {0x3b1f, 0x00, 0, 0}, {0x3000, 0x12, 0, 0}, {0x3000, 0x16, 0, 0}, {0x3b1f, 0x00, 0, 0}, {0x3003, 0xce, 0, 0}, {0x3004, 0xd8, 0, 0}, {0x3005, 0x00, 0, 0}, {0x3006, 0x10, 0, 0}, {0x3007, 0x3b, 0, 0}, {0x3012, 0x80, 0, 0}, {0x3013, 0x39, 0, 0}, {0x3104, 0x20, 0, 0}, {0x3503, 0x07, 0, 0}, {0x3500, 0x00, 0, 0}, {0x3501, 0x14, 0, 0}, {0x3502, 0x80, 0, 0}, {0x350b, 0xff, 0, 0}, {0x3400, 0x04, 0, 0}, {0x3401, 0x00, 0, 0}, {0x3402, 0x04, 0, 0}, {0x3403, 0x00, 0, 0}, {0x3404, 0x04, 0, 0}, {0x3405, 0x00, 0, 0}, {0x3406, 0x01, 0, 0}, {0x5001, 0x01, 0, 0}, {0x5000, 0x06, 0, 0}, {0x0100, 0x00, 0, 0}, {0x3004, 0xbf, 0, 0}, {0x3005, 0x10, 0, 0}, {0x3006, 0x00, 0, 0}, {0x3011, 0x02, 0, 0}, {0x370a, 0x74, 0, 0}, {0x3801, 0x08, 0, 0}, {0x3802, 0x00, 0, 0}, {0x3803, 0x00, 0, 0}, {0x3805, 0xd7, 0, 0}, {0x3806, 0x09, 0, 0}, {0x3807, 0x97, 0, 0}, {0x3808, 0x01, 0, 0}, {0x3809, 0xe0, 0, 0}, {0x380a, 0x01, 0, 0}, {0x380b, 0xe0, 0, 0}, {0x380c, 0x0d, 0, 0}, {0x380d, 0xb0, 0, 0}, {0x380e, 0x02, 0, 0}, {0x380f, 0x7a, 0, 0}, {0x3811, 0x04, 0, 0}, {0x3813, 0x02, 0, 0}, {0x3814, 0x71, 0, 0}, {0x3815, 0x71, 0, 0}, {0x3820, 0x00, 0, 0}, {0x3821, 0x16, 0, 0}, {0x3f00, 0x00, 0, 0}, {0x4600, 0x14, 0, 0}, {0x4601, 0x14, 0, 0}, {0x4602, 0x00, 0, 0}, {0x4837, 0x1e, 0, 0}, {0x5068, 0x59, 0, 0}, {0x506a, 0x5a, 0, 0}, {0x0100, 0x01, 0, 0}, }; static struct ov8820_mode_info ov8820_mode_info_data[2][ov8820_mode_MAX + 1] = { { {ov8820_mode_480_480, 0, 0, NULL, 0}, }, { {ov8820_mode_480_480, 480, 480, ov8820_setting_30fps_480_480, ARRAY_SIZE(ov8820_setting_30fps_480_480)}, }, }; static struct regulator *io_regulator; static struct regulator *core_regulator; static struct regulator *analog_regulator; static struct regulator *gpo_regulator; static struct fsl_mxc_camera_platform_data *camera_plat; static int ov8820_probe(struct i2c_client *adapter, const struct i2c_device_id *device_id); static int ov8820_remove(struct i2c_client *client); static s32 ov8820_read_reg(u16 reg, u8 *val); static s32 ov8820_write_reg(u16 reg, u8 val); static const struct i2c_device_id ov8820_id[] = { {"ov8820_mipi", 0}, {}, }; MODULE_DEVICE_TABLE(i2c, ov8820_id); static struct i2c_driver ov8820_i2c_driver = { .driver = { .owner = THIS_MODULE, .name = "ov8820_mipi", }, .probe = ov8820_probe, .remove = ov8820_remove, .id_table = ov8820_id, }; static s32 ov8820_write_reg(u16 reg, u8 val) { u8 au8Buf[3] = {0}; au8Buf[0] = reg >> 8; au8Buf[1] = reg & 0xff; au8Buf[2] = val; if (i2c_master_send(ov8820_data.i2c_client, au8Buf, 3) < 0) { pr_err("%s:write reg error:reg=%x,val=%x\n", __func__, reg, val); return -1; } return 0; } static s32 ov8820_read_reg(u16 reg, u8 *val) { u8 au8RegBuf[2] = {0}; u8 u8RdVal = 0; au8RegBuf[0] = reg >> 8; au8RegBuf[1] = reg & 0xff; if (2 != i2c_master_send(ov8820_data.i2c_client, au8RegBuf, 2)) { pr_err("%s:write reg error:reg=%x\n", __func__, reg); return -1; } if (1 != i2c_master_recv(ov8820_data.i2c_client, &u8RdVal, 1)) { pr_err("%s:read reg error:reg=%x,val=%x\n", __func__, reg, u8RdVal); return -1; } *val = u8RdVal; return u8RdVal; } static int ov8820_init_mode(enum ov8820_frame_rate frame_rate, enum ov8820_mode mode) { struct reg_value *pModeSetting = NULL; s32 i = 0; s32 iModeSettingArySize = 0; register u32 Delay_ms = 0; register u16 RegAddr = 0; register u8 Mask = 0; register u8 Val = 0; u8 RegVal = 0; int retval = 0; void *mipi_csi2_info; u32 mipi_reg; if (mode > ov8820_mode_MAX || mode < ov8820_mode_MIN) { pr_err("Wrong ov8820 mode detected!\n"); return -1; } mipi_csi2_info = mipi_csi2_get_info(); /* initial mipi dphy */ if (mipi_csi2_info) { if (!mipi_csi2_get_status(mipi_csi2_info)) mipi_csi2_enable(mipi_csi2_info); if (mipi_csi2_get_status(mipi_csi2_info)) { mipi_csi2_set_lanes(mipi_csi2_info); mipi_csi2_reset(mipi_csi2_info); if (ov8820_data.pix.pixelformat == V4L2_PIX_FMT_SBGGR10) mipi_csi2_set_datatype(mipi_csi2_info, MIPI_DT_RAW10); else pr_err("currently this sensor format can not be supported!\n"); } else { pr_err("Can not enable mipi csi2 driver!\n"); return -1; } } else { printk(KERN_ERR "Fail to get mipi_csi2_info!\n"); return -1; } pModeSetting = ov8820_mode_info_data[frame_rate][mode].init_data_ptr; iModeSettingArySize = ov8820_mode_info_data[frame_rate][mode].init_data_size; ov8820_data.pix.width = ov8820_mode_info_data[frame_rate][mode].width; ov8820_data.pix.height = ov8820_mode_info_data[frame_rate][mode].height; if (ov8820_data.pix.width == 0 || ov8820_data.pix.height == 0 || pModeSetting == NULL || iModeSettingArySize == 0) return -EINVAL; for (i = 0; i < iModeSettingArySize; ++i, ++pModeSetting) { Delay_ms = pModeSetting->u32Delay_ms; RegAddr = pModeSetting->u16RegAddr; Val = pModeSetting->u8Val; Mask = pModeSetting->u8Mask; if (Mask) { retval = ov8820_read_reg(RegAddr, &RegVal); if (retval < 0) goto err; RegVal &= ~(u8)Mask; Val &= Mask; Val |= RegVal; } retval = ov8820_write_reg(RegAddr, Val); if (retval < 0) goto err; if (Delay_ms) msleep(Delay_ms); } if (mipi_csi2_info) { unsigned int i; i = 0; /* wait for mipi sensor ready */ mipi_reg = mipi_csi2_dphy_status(mipi_csi2_info); while ((mipi_reg == 0x200) && (i < 10)) { mipi_reg = mipi_csi2_dphy_status(mipi_csi2_info); i++; msleep(10); } if (i >= 10) { pr_err("mipi csi2 can not receive sensor clk!\n"); return -1; } i = 0; /* wait for mipi stable */ mipi_reg = mipi_csi2_get_error1(mipi_csi2_info); while ((mipi_reg != 0x0) && (i < 10)) { mipi_reg = mipi_csi2_get_error1(mipi_csi2_info); i++; msleep(10); } if (i >= 10) { pr_err("mipi csi2 can not reveive data correctly!\n"); return -1; } } err: return retval; } /* --------------- IOCTL functions from v4l2_int_ioctl_desc --------------- */ static int ioctl_g_ifparm(struct v4l2_int_device *s, struct v4l2_ifparm *p) { if (s == NULL) { pr_err(" ERROR!! no slave device set!\n"); return -1; } memset(p, 0, sizeof(*p)); p->u.bt656.clock_curr = ov8820_data.mclk; pr_debug(" clock_curr=mclk=%d\n", ov8820_data.mclk); p->if_type = V4L2_IF_TYPE_BT656; p->u.bt656.mode = V4L2_IF_TYPE_BT656_MODE_NOBT_8BIT; p->u.bt656.clock_min = OV8820_XCLK_MIN; p->u.bt656.clock_max = OV8820_XCLK_MAX; p->u.bt656.bt_sync_correct = 1; /* Indicate external vsync */ return 0; } /*! * ioctl_s_power - V4L2 sensor interface handler for VIDIOC_S_POWER ioctl * @s: pointer to standard V4L2 device structure * @on: indicates power mode (on or off) * * Turns the power on or off, depending on the value of on and returns the * appropriate error code. */ static int ioctl_s_power(struct v4l2_int_device *s, int on) { struct sensor *sensor = s->priv; if (on && !sensor->on) { if (io_regulator) if (regulator_enable(io_regulator) != 0) return -EIO; if (core_regulator) if (regulator_enable(core_regulator) != 0) return -EIO; if (gpo_regulator) if (regulator_enable(gpo_regulator) != 0) return -EIO; if (analog_regulator) if (regulator_enable(analog_regulator) != 0) return -EIO; /* Make sure power on */ if (camera_plat->pwdn) camera_plat->pwdn(0); } else if (!on && sensor->on) { if (analog_regulator) regulator_disable(analog_regulator); if (core_regulator) regulator_disable(core_regulator); if (io_regulator) regulator_disable(io_regulator); if (gpo_regulator) regulator_disable(gpo_regulator); } sensor->on = on; return 0; } /*! * ioctl_g_parm - V4L2 sensor interface handler for VIDIOC_G_PARM ioctl * @s: pointer to standard V4L2 device structure * @a: pointer to standard V4L2 VIDIOC_G_PARM ioctl structure * * Returns the sensor's video CAPTURE parameters. */ static int ioctl_g_parm(struct v4l2_int_device *s, struct v4l2_streamparm *a) { struct sensor *sensor = s->priv; struct v4l2_captureparm *cparm = &a->parm.capture; int ret = 0; switch (a->type) { /* This is the only case currently handled. */ case V4L2_BUF_TYPE_VIDEO_CAPTURE: memset(a, 0, sizeof(*a)); a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; cparm->capability = sensor->streamcap.capability; cparm->timeperframe = sensor->streamcap.timeperframe; cparm->capturemode = sensor->streamcap.capturemode; ret = 0; break; /* These are all the possible cases. */ case V4L2_BUF_TYPE_VIDEO_OUTPUT: case V4L2_BUF_TYPE_VIDEO_OVERLAY: case V4L2_BUF_TYPE_VBI_CAPTURE: case V4L2_BUF_TYPE_VBI_OUTPUT: case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: ret = -EINVAL; break; default: pr_debug(" type is unknown - %d\n", a->type); ret = -EINVAL; break; } return ret; } /*! * ioctl_s_parm - V4L2 sensor interface handler for VIDIOC_S_PARM ioctl * @s: pointer to standard V4L2 device structure * @a: pointer to standard V4L2 VIDIOC_S_PARM ioctl structure * * Configures the sensor to use the input parameters, if possible. If * not possible, reverts to the old parameters and returns the * appropriate error code. */ static int ioctl_s_parm(struct v4l2_int_device *s, struct v4l2_streamparm *a) { struct sensor *sensor = s->priv; struct v4l2_fract *timeperframe = &a->parm.capture.timeperframe; u32 tgt_fps; /* target frames per secound */ enum ov8820_frame_rate frame_rate; int ret = 0; /* Make sure power on */ if (camera_plat->pwdn) camera_plat->pwdn(0); switch (a->type) { /* This is the only case currently handled. */ case V4L2_BUF_TYPE_VIDEO_CAPTURE: /* Check that the new frame rate is allowed. */ if ((timeperframe->numerator == 0) || (timeperframe->denominator == 0)) { timeperframe->denominator = DEFAULT_FPS; timeperframe->numerator = 1; } tgt_fps = timeperframe->denominator / timeperframe->numerator; if (tgt_fps > MAX_FPS) { timeperframe->denominator = MAX_FPS; timeperframe->numerator = 1; } else if (tgt_fps < MIN_FPS) { timeperframe->denominator = MIN_FPS; timeperframe->numerator = 1; } /* Actual frame rate we use */ tgt_fps = timeperframe->denominator / timeperframe->numerator; if (tgt_fps == 15) frame_rate = ov8820_15_fps; else if (tgt_fps == 30) frame_rate = ov8820_30_fps; else { pr_err(" The camera frame rate is not supported!\n"); return -EINVAL; } sensor->streamcap.timeperframe = *timeperframe; sensor->streamcap.capturemode = (u32)a->parm.capture.capturemode; ret = ov8820_init_mode(frame_rate, sensor->streamcap.capturemode); break; /* These are all the possible cases. */ case V4L2_BUF_TYPE_VIDEO_OUTPUT: case V4L2_BUF_TYPE_VIDEO_OVERLAY: case V4L2_BUF_TYPE_VBI_CAPTURE: case V4L2_BUF_TYPE_VBI_OUTPUT: case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: pr_debug(" type is not " \ "V4L2_BUF_TYPE_VIDEO_CAPTURE but %d\n", a->type); ret = -EINVAL; break; default: pr_debug(" type is unknown - %d\n", a->type); ret = -EINVAL; break; } return ret; } /*! * ioctl_g_fmt_cap - V4L2 sensor interface handler for ioctl_g_fmt_cap * @s: pointer to standard V4L2 device structure * @f: pointer to standard V4L2 v4l2_format structure * * Returns the sensor's current pixel format in the v4l2_format * parameter. */ static int ioctl_g_fmt_cap(struct v4l2_int_device *s, struct v4l2_format *f) { struct sensor *sensor = s->priv; f->fmt.pix = sensor->pix; return 0; } /*! * ioctl_g_ctrl - V4L2 sensor interface handler for VIDIOC_G_CTRL ioctl * @s: pointer to standard V4L2 device structure * @vc: standard V4L2 VIDIOC_G_CTRL ioctl structure * * If the requested control is supported, returns the control's current * value from the video_control[] array. Otherwise, returns -EINVAL * if the control is not supported. */ static int ioctl_g_ctrl(struct v4l2_int_device *s, struct v4l2_control *vc) { int ret = 0; switch (vc->id) { case V4L2_CID_BRIGHTNESS: vc->value = ov8820_data.brightness; break; case V4L2_CID_HUE: vc->value = ov8820_data.hue; break; case V4L2_CID_CONTRAST: vc->value = ov8820_data.contrast; break; case V4L2_CID_SATURATION: vc->value = ov8820_data.saturation; break; case V4L2_CID_RED_BALANCE: vc->value = ov8820_data.red; break; case V4L2_CID_BLUE_BALANCE: vc->value = ov8820_data.blue; break; case V4L2_CID_EXPOSURE: vc->value = ov8820_data.ae_mode; break; default: ret = -EINVAL; } return ret; } /*! * ioctl_s_ctrl - V4L2 sensor interface handler for VIDIOC_S_CTRL ioctl * @s: pointer to standard V4L2 device structure * @vc: standard V4L2 VIDIOC_S_CTRL ioctl structure * * If the requested control is supported, sets the control's current * value in HW (and updates the video_control[] array). Otherwise, * returns -EINVAL if the control is not supported. */ static int ioctl_s_ctrl(struct v4l2_int_device *s, struct v4l2_control *vc) { int retval = 0; pr_debug("In ov8820:ioctl_s_ctrl %d\n", vc->id); switch (vc->id) { case V4L2_CID_BRIGHTNESS: break; case V4L2_CID_CONTRAST: break; case V4L2_CID_SATURATION: break; case V4L2_CID_HUE: break; case V4L2_CID_AUTO_WHITE_BALANCE: break; case V4L2_CID_DO_WHITE_BALANCE: break; case V4L2_CID_RED_BALANCE: break; case V4L2_CID_BLUE_BALANCE: break; case V4L2_CID_GAMMA: break; case V4L2_CID_EXPOSURE: break; case V4L2_CID_AUTOGAIN: break; case V4L2_CID_GAIN: break; case V4L2_CID_HFLIP: break; case V4L2_CID_VFLIP: break; default: retval = -EPERM; break; } return retval; } /*! * ioctl_enum_framesizes - V4L2 sensor interface handler for * VIDIOC_ENUM_FRAMESIZES ioctl * @s: pointer to standard V4L2 device structure * @fsize: standard V4L2 VIDIOC_ENUM_FRAMESIZES ioctl structure * * Return 0 if successful, otherwise -EINVAL. */ static int ioctl_enum_framesizes(struct v4l2_int_device *s, struct v4l2_frmsizeenum *fsize) { if (fsize->index > ov8820_mode_MAX) return -EINVAL; fsize->pixel_format = ov8820_data.pix.pixelformat; fsize->discrete.width = max(ov8820_mode_info_data[0][fsize->index].width, ov8820_mode_info_data[1][fsize->index].width); fsize->discrete.height = max(ov8820_mode_info_data[0][fsize->index].height, ov8820_mode_info_data[1][fsize->index].height); return 0; } /*! * ioctl_g_chip_ident - V4L2 sensor interface handler for * VIDIOC_DBG_G_CHIP_IDENT ioctl * @s: pointer to standard V4L2 device structure * @id: pointer to int * * Return 0. */ static int ioctl_g_chip_ident(struct v4l2_int_device *s, int *id) { ((struct v4l2_dbg_chip_ident *)id)->match.type = V4L2_CHIP_MATCH_I2C_DRIVER; strcpy(((struct v4l2_dbg_chip_ident *)id)->match.name, "ov8820_camera"); return 0; } /*! * ioctl_init - V4L2 sensor interface handler for VIDIOC_INT_INIT * @s: pointer to standard V4L2 device structure */ static int ioctl_init(struct v4l2_int_device *s) { return 0; } /*! * ioctl_enum_fmt_cap - V4L2 sensor interface handler for VIDIOC_ENUM_FMT * @s: pointer to standard V4L2 device structure * @fmt: pointer to standard V4L2 fmt description structure * * Return 0. */ static int ioctl_enum_fmt_cap(struct v4l2_int_device *s, struct v4l2_fmtdesc *fmt) { if (fmt->index > ov8820_mode_MAX) return -EINVAL; fmt->pixelformat = ov8820_data.pix.pixelformat; return 0; } /*! * ioctl_dev_init - V4L2 sensor interface handler for vidioc_int_dev_init_num * @s: pointer to standard V4L2 device structure * * Initialise the device when slave attaches to the master. */ static int ioctl_dev_init(struct v4l2_int_device *s) { struct sensor *sensor = s->priv; u32 tgt_xclk; /* target xclk */ u32 tgt_fps; /* target frames per secound */ int ret; enum ov8820_frame_rate frame_rate; void *mipi_csi2_info; ov8820_data.on = true; /* mclk */ tgt_xclk = ov8820_data.mclk; tgt_xclk = min(tgt_xclk, (u32)OV8820_XCLK_MAX); tgt_xclk = max(tgt_xclk, (u32)OV8820_XCLK_MIN); ov8820_data.mclk = tgt_xclk; pr_debug(" Setting mclk to %d MHz\n", tgt_xclk / 1000000); set_mclk_rate(&ov8820_data.mclk, ov8820_data.mclk_source); /* Default camera frame rate is set in probe */ tgt_fps = sensor->streamcap.timeperframe.denominator / sensor->streamcap.timeperframe.numerator; if (tgt_fps == 15) frame_rate = ov8820_15_fps; else if (tgt_fps == 30) frame_rate = ov8820_30_fps; else return -EINVAL; /* Only support 15fps or 30fps now. */ mipi_csi2_info = mipi_csi2_get_info(); /* enable mipi csi2 */ if (mipi_csi2_info) mipi_csi2_enable(mipi_csi2_info); else { printk(KERN_ERR "Fail to get mipi_csi2_info!\n"); return -EPERM; } ret = ov8820_init_mode(frame_rate, sensor->streamcap.capturemode); return ret; } /*! * ioctl_dev_exit - V4L2 sensor interface handler for vidioc_int_dev_exit_num * @s: pointer to standard V4L2 device structure * * Delinitialise the device when slave detaches to the master. */ static int ioctl_dev_exit(struct v4l2_int_device *s) { void *mipi_csi2_info; mipi_csi2_info = mipi_csi2_get_info(); /* disable mipi csi2 */ if (mipi_csi2_info) if (mipi_csi2_get_status(mipi_csi2_info)) mipi_csi2_disable(mipi_csi2_info); return 0; } /*! * This structure defines all the ioctls for this module and links them to the * enumeration. */ static struct v4l2_int_ioctl_desc ov8820_ioctl_desc[] = { {vidioc_int_dev_init_num, (v4l2_int_ioctl_func*) ioctl_dev_init}, {vidioc_int_dev_exit_num, ioctl_dev_exit}, {vidioc_int_s_power_num, (v4l2_int_ioctl_func*) ioctl_s_power}, {vidioc_int_g_ifparm_num, (v4l2_int_ioctl_func*) ioctl_g_ifparm}, /* {vidioc_int_g_needs_reset_num, (v4l2_int_ioctl_func *)ioctl_g_needs_reset}, */ /* {vidioc_int_reset_num, (v4l2_int_ioctl_func *)ioctl_reset}, */ {vidioc_int_init_num, (v4l2_int_ioctl_func*) ioctl_init}, {vidioc_int_enum_fmt_cap_num, (v4l2_int_ioctl_func *) ioctl_enum_fmt_cap}, /* {vidioc_int_try_fmt_cap_num, (v4l2_int_ioctl_func *)ioctl_try_fmt_cap}, */ {vidioc_int_g_fmt_cap_num, (v4l2_int_ioctl_func *) ioctl_g_fmt_cap}, /* {vidioc_int_s_fmt_cap_num, (v4l2_int_ioctl_func *) ioctl_s_fmt_cap}, */ {vidioc_int_g_parm_num, (v4l2_int_ioctl_func *) ioctl_g_parm}, {vidioc_int_s_parm_num, (v4l2_int_ioctl_func *) ioctl_s_parm}, /* {vidioc_int_queryctrl_num, (v4l2_int_ioctl_func *)ioctl_queryctrl}, */ {vidioc_int_g_ctrl_num, (v4l2_int_ioctl_func *) ioctl_g_ctrl}, {vidioc_int_s_ctrl_num, (v4l2_int_ioctl_func *) ioctl_s_ctrl}, {vidioc_int_enum_framesizes_num, (v4l2_int_ioctl_func *) ioctl_enum_framesizes}, {vidioc_int_g_chip_ident_num, (v4l2_int_ioctl_func *) ioctl_g_chip_ident}, }; static struct v4l2_int_slave ov8820_slave = { .ioctls = ov8820_ioctl_desc, .num_ioctls = ARRAY_SIZE(ov8820_ioctl_desc), }; static struct v4l2_int_device ov8820_int_device = { .module = THIS_MODULE, .name = "ov8820", .type = v4l2_int_type_slave, .u = { .slave = &ov8820_slave, }, }; /*! * ov8820 I2C probe function * * @param adapter struct i2c_adapter * * @return Error code indicating success or failure */ static int ov8820_probe(struct i2c_client *client, const struct i2c_device_id *id) { int retval; struct fsl_mxc_camera_platform_data *plat_data = client->dev.platform_data; /* Set initial values for the sensor struct. */ memset(&ov8820_data, 0, sizeof(ov8820_data)); ov8820_data.mclk = 24000000; /* 6 - 54 MHz, typical 24MHz */ ov8820_data.mclk = plat_data->mclk; ov8820_data.mclk_source = plat_data->mclk_source; ov8820_data.csi = plat_data->csi; ov8820_data.i2c_client = client; ov8820_data.pix.pixelformat = V4L2_PIX_FMT_SBGGR10; ov8820_data.pix.width = 480; ov8820_data.pix.height = 480; ov8820_data.streamcap.capability = V4L2_MODE_HIGHQUALITY | V4L2_CAP_TIMEPERFRAME; ov8820_data.streamcap.capturemode = 0; ov8820_data.streamcap.timeperframe.denominator = DEFAULT_FPS; ov8820_data.streamcap.timeperframe.numerator = 1; if (plat_data->io_regulator) { io_regulator = regulator_get(&client->dev, plat_data->io_regulator); if (!IS_ERR(io_regulator)) { regulator_set_voltage(io_regulator, OV8820_VOLTAGE_DIGITAL_IO, OV8820_VOLTAGE_DIGITAL_IO); if (regulator_enable(io_regulator) != 0) { pr_err("%s:io set voltage error\n", __func__); goto err1; } else { dev_dbg(&client->dev, "%s:io set voltage ok\n", __func__); } } else io_regulator = NULL; } if (plat_data->core_regulator) { core_regulator = regulator_get(&client->dev, plat_data->core_regulator); if (!IS_ERR(core_regulator)) { regulator_set_voltage(core_regulator, OV8820_VOLTAGE_DIGITAL_CORE, OV8820_VOLTAGE_DIGITAL_CORE); if (regulator_enable(core_regulator) != 0) { pr_err("%s:core set voltage error\n", __func__); goto err2; } else { dev_dbg(&client->dev, "%s:core set voltage ok\n", __func__); } } else core_regulator = NULL; } if (plat_data->analog_regulator) { analog_regulator = regulator_get(&client->dev, plat_data->analog_regulator); if (!IS_ERR(analog_regulator)) { regulator_set_voltage(analog_regulator, OV8820_VOLTAGE_ANALOG, OV8820_VOLTAGE_ANALOG); if (regulator_enable(analog_regulator) != 0) { pr_err("%s:analog set voltage error\n", __func__); goto err3; } else { dev_dbg(&client->dev, "%s:analog set voltage ok\n", __func__); } } else analog_regulator = NULL; } if (plat_data->io_init) plat_data->io_init(); if (plat_data->pwdn) plat_data->pwdn(0); camera_plat = plat_data; ov8820_int_device.priv = &ov8820_data; retval = v4l2_int_device_register(&ov8820_int_device); return retval; err3: if (core_regulator) { regulator_disable(core_regulator); regulator_put(core_regulator); } err2: if (io_regulator) { regulator_disable(io_regulator); regulator_put(io_regulator); } err1: return -1; } /*! * ov8820 I2C detach function * * @param client struct i2c_client * * @return Error code indicating success or failure */ static int ov8820_remove(struct i2c_client *client) { v4l2_int_device_unregister(&ov8820_int_device); if (gpo_regulator) { regulator_disable(gpo_regulator); regulator_put(gpo_regulator); } if (analog_regulator) { regulator_disable(analog_regulator); regulator_put(analog_regulator); } if (core_regulator) { regulator_disable(core_regulator); regulator_put(core_regulator); } if (io_regulator) { regulator_disable(io_regulator); regulator_put(io_regulator); } return 0; } /*! * ov8820 init function * Called by insmod ov8820_camera.ko. * * @return Error code indicating success or failure */ static __init int ov8820_init(void) { u8 err; err = i2c_add_driver(&ov8820_i2c_driver); if (err != 0) pr_err("%s:driver registration failed, error=%d\n", __func__, err); return err; } /*! * OV8820 cleanup function * Called on rmmod ov8820_camera.ko * * @return Error code indicating success or failure */ static void __exit ov8820_clean(void) { i2c_del_driver(&ov8820_i2c_driver); } module_init(ov8820_init); module_exit(ov8820_clean); MODULE_AUTHOR("Freescale Semiconductor, Inc."); MODULE_DESCRIPTION("OV8820 MIPI Camera Driver"); MODULE_LICENSE("GPL"); MODULE_VERSION("1.0"); MODULE_ALIAS("CSI");