This adds LV8093 Piezo Actuator Lens driver.
This is currently found in tandem with IMX046 sensor.
Signed-off-by: Sergio Aguirre <saagui...@ti.com>
---
drivers/media/video/Kconfig | 8 +
drivers/media/video/Makefile | 1 +
drivers/media/video/lv8093.c | 614 +++++++++++++++++++++++++++++++++++++
drivers/media/video/lv8093_regs.h | 76 +++++
include/media/lv8093.h | 40 +++
include/media/v4l2-chip-ident.h | 3 +
6 files changed, 742 insertions(+), 0 deletions(-)
create mode 100644 drivers/media/video/lv8093.c
create mode 100644 drivers/media/video/lv8093_regs.h
create mode 100644 include/media/lv8093.h
diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index 10cd7b3..b62adce 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -344,6 +344,14 @@ config VIDEO_IMX046
IMX046 camera. It is currently working with the TI OMAP3
camera controller.
+config VIDEO_LV8093
+ tristate "Piezo Actuator Lens driver for LV8093"
+ depends on I2C && VIDEO_V4L2
+ ---help---
+ This is a Video4Linux2 lens driver for the Sanyo LV8093.
+ It is currently working with the TI OMAP3 camera controller
+ and Sony IMX046 sensor.
+
config VIDEO_SAA7110
tristate "Philips SAA7110 video decoder"
depends on VIDEO_V4L2 && I2C
diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
index 00341cb..50f528c 100644
--- a/drivers/media/video/Makefile
+++ b/drivers/media/video/Makefile
@@ -39,6 +39,7 @@ obj-$(CONFIG_VIDEO_TDA9840) += tda9840.o
obj-$(CONFIG_VIDEO_TEA6415C) += tea6415c.o
obj-$(CONFIG_VIDEO_TEA6420) += tea6420.o
obj-$(CONFIG_VIDEO_IMX046) += imx046.o
+obj-$(CONFIG_VIDEO_LV8093) += lv8093.o
obj-$(CONFIG_VIDEO_SAA7110) += saa7110.o
obj-$(CONFIG_VIDEO_SAA711X) += saa7115.o
obj-$(CONFIG_VIDEO_SAA717X) += saa717x.o
diff --git a/drivers/media/video/lv8093.c b/drivers/media/video/lv8093.c
new file mode 100644
index 0000000..b0b0fcf
--- /dev/null
+++ b/drivers/media/video/lv8093.c
@@ -0,0 +1,614 @@
+/*
+ * drivers/media/video/lv8093.c
+ *
+ * LV8093 Piezo Motor (LENS) driver
+ *
+ * Copyright (C) 2008-2009 Texas Instruments.
+ * Copyright (C) 2009 Hewlett-Packard.
+ *
+ * This package 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 PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#include <linux/mutex.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/cdev.h>
+#include <linux/device.h>
+
+#include <media/lv8093.h>
+#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-subdev.h>
+
+#include "lv8093_regs.h"
+
+static struct vcontrol {
+ struct v4l2_queryctrl qc;
+} video_control[] = {
+ {
+ {
+ .id = V4L2_CID_FOCUS_RELATIVE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Lens Relative Position",
+ .minimum = 0,
+ .maximum = 0,
+ .step = LV8093_MAX_RELATIVE_STEP,
+ .default_value = 0,
+ }
+ ,}
+};
+
+static struct i2c_driver lv8093_i2c_driver;
+
+static struct lv8093_lens_settings {
+ u8 reg;
+ u8 val;
+} lens_settings[] = {
+ { /* Set control register */
+ .reg = CAMAF_LV8093_CTL_REG,
+ .val = CAMAF_LV8093_GATE0 |
+ CAMAF_LV8093_ENIN |
+ CAMAF_LV8093_CKSEL_ONE |
+ CAMAF_LV8093_RET2 |
+ CAMAF_LV8093_INIT_OFF,
+ },
+ { /* Specify number of clocks per period */
+ .reg = CAMAF_LV8093_RST_REG,
+ .val = (LV8093_CLK_PER_PERIOD - 1),
+ },
+ { /* Set the GATE_A pulse set value */
+ .reg = CAMAF_LV8093_GTAS_REG,
+ .val = (LV8093_TIME_GATEA + 1),
+ },
+ { /* Set the GATE_B pulse reset value */
+ .reg = CAMAF_LV8093_GTBR_REG,
+ .val = (LV8093_TIME_GATEA + 1 + LV8093_TIME_OFF),
+ },
+ { /* Set the GATE_B pulse set value */
+ .reg = CAMAF_LV8093_GTBS_REG,
+ .val = (LV8093_TIME_GATEA + 1 +
+ LV8093_TIME_OFF + LV8093_TIME_GATEB),
+ },
+ { /* Specific the number of output pulse steps */
+ .reg = CAMAF_LV8093_STP_REG,
+ .val = LV8093_STP,
+ },
+ { /* Set the number of swing back of init sequence performed */
+ .reg = CAMAF_LV8093_MOV_REG,
+ .val = 0,
+ },
+};
+
+/**
+ * find_vctrl - Finds the requested ID in the video control structure array
+ * @id: ID of control to search the video control array for
+ *
+ * Returns the index of the requested ID from the control structure array
+ */
+static int find_vctrl(int id)
+{
+ int i;
+
+ if (id < V4L2_CID_BASE)
+ return -EDOM;
+
+ for (i = (ARRAY_SIZE(video_control) - 1); i >= 0; i--)
+ if (video_control[i].qc.id == id)
+ break;
+ if (i < 0)
+ i = -EINVAL;
+ return i;
+}
+
+/**
+ * lv8093_reg_read - Reads a value from a register in LV8093 Piezo
+ * driver device.
+ * @client: Pointer to structure of I2C client.
+ * @value: Pointer to u16 for returning value of register to read.
+ *
+ * Returns zero if successful, or non-zero otherwise.
+ **/
+static int lv8093_reg_read(struct i2c_client *client, u8 *value)
+{
+ int err;
+ struct i2c_msg msg[1];
+
+ if (!client->adapter)
+ return -ENODEV;
+
+ msg->addr = client->addr;
+ msg->flags = I2C_M_RD;
+ msg->len = 1;
+ msg->buf = value;
+
+ err = i2c_transfer(client->adapter, msg, 1);
+
+ if (err < 0)
+ v4l_err(client, "i2c read failed with error %i", err);
+
+ return err;
+}
+
+/**
+ * lv8093_reg_write - Writes a value to a register in LV8093 Piezo
+ * driver device.
+ * @client: Pointer to structure of I2C client.
+ * @reg: Register to write.
+ * @value: Value of register to write.
+ *
+ * Returns zero or +ve if successful, -ve for error.
+ **/
+static int lv8093_reg_write(struct i2c_client *client, u8 reg, u8 value)
+{
+ int err;
+ struct i2c_msg msg[1];
+ unsigned char data[2];
+
+ if (!client->adapter)
+ return -ENODEV;
+
+ msg->addr = client->addr;
+ msg->flags = 0;
+ msg->len = 2;
+ msg->buf = data;
+
+ data[0] = reg;
+ data[1] = value;
+
+ err = i2c_transfer(client->adapter, msg, 1);
+ if (err < 0)
+ v4l_err(client, "i2c write failed with error %i", err);
+
+ return err;
+}
+
+/**
+ * lv8093_detect - Detects LV8093 Piezo driver device.
+ * @client: Pointer to structure of I2C client.
+ *
+ * Returns 0 if successful, -1 if camera is off or if test register value
+ * wasn't stored properly, or return error from lv8093_reg_write function.
+ **/
+static int lv8093_detect(struct i2c_client *client)
+{
+ int err = 0;
+ u8 rposn = 0;
+
+ err = lv8093_reg_write(client, CAMAF_LV8093_CTL_REG,
+ CAMAF_LV8093_GATE0 |
+ CAMAF_LV8093_CKSEL_ONE |
+ CAMAF_LV8093_RET2 |
+ CAMAF_LV8093_INIT_OFF);
+
+ if (err < 0) {
+ v4l_err(client, "Unable to write LV8093\n");
+ return err;
+ }
+
+ err = lv8093_reg_read(client, &rposn);
+ if (err < 0) {
+ v4l_err(client, "Unable to read LV8093\n");
+ return err;
+ }
+
+ return err;
+}
+
+/**
+ * lv8093_reginit - Initializes LV8093 Piezo driver device.
+ * @client: Pointer to structure of I2C client.
+ *
+ * Returns 0 if successful, or returns errors from lv8093_reg_write.
+ **/
+static int lv8093_reginit(struct i2c_client *client)
+{
+ int i, err = 0;
+
+ for (i = 0; i < ARRAY_SIZE(lens_settings); i++) {
+
+ err = lv8093_reg_write(client,
+ lens_settings[i].reg, lens_settings[i].val);
+
+ if (err < 0) {
+ v4l_err(client, "Unable to initialize LV8093\n");
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * lv8093_af_setfocus - Sets the desired focus.
+ * @relpos: Relative focus position:
+ * -ve - Direction INFINITY.
+ * +ve - Direction MACRO.
+ * abs(relpos) gives number of steps in desired direction.
+ *
+ * Returns 0 on success, -EINVAL if camera is off or returned errors
+ * from lv8093_reg_write function.
+ **/
+static int lv8093_af_setfocus(struct v4l2_subdev *subdev, s16 relpos)
+{
+ struct lv8093_device *af_dev = to_lv8093_device(subdev);
+ struct i2c_client *client = v4l2_get_subdevdata(subdev);
+ u8 num_pulses = abs(relpos);
+ int ret = 0;
+
+ if ((af_dev->power_state == V4L2_POWER_OFF) ||
+ (af_dev->power_state == V4L2_POWER_STANDBY))
+ return -EINVAL;
+
+ if (relpos >= 0) {
+ /* Move lens in Macro direction */
+ ret |= lv8093_reg_write(client, CAMAF_LV8093_DRVPLS_REG,
+ 0 & (~CAMAF_LV8093_MAC_DIR));
+ ret |= lv8093_reg_write(client, CAMAF_LV8093_DRVPLS_REG,
+ num_pulses | CAMAF_LV8093_MAC_DIR);
+
+ } else {
+ /* Move lens in Infinite direction */
+ ret |= lv8093_reg_write(client, CAMAF_LV8093_DRVPLS_REG,
+ 0 | CAMAF_LV8093_MAC_DIR);
+ ret |= lv8093_reg_write(client, CAMAF_LV8093_DRVPLS_REG,
+ num_pulses & (~CAMAF_LV8093_MAC_DIR));
+
+ }
+
+ if (ret < 0) {
+ v4l_err(client, "Unable to write " LV8093_NAME
+ " lens HW\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/**
+ * lv8093_is_busy - Read busy bit.
+ *
+ * Returns:
+ * 0 for READY, -EBUSY for device busy, -EINVAL on error.
+ **/
+static int lv8093_is_busy(struct v4l2_subdev *subdev)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(subdev);
+ int ret;
+ u8 regval;
+
+ ret = lv8093_reg_read(client, ®val);
+
+ if (ret < 0) {
+ dev_err(&client->dev, "Unable to read " LV8093_NAME
+ " lens HW\n");
+ return -EINVAL;
+ }
+
+ if (regval & CAMAF_LV8093_BUSY)
+ return -EBUSY;
+
+ return 0;
+}
+
+static int lv8093_power_on(struct v4l2_subdev *subdev)
+{
+ struct lv8093_device *lens = to_lv8093_device(subdev);
+ struct i2c_client *client = v4l2_get_subdevdata(subdev);
+ int rval = -EINVAL;
+
+ if (lens->pdata->s_power)
+ rval = lens->pdata->s_power(subdev, 1);
+
+ if (rval < 0) {
+ v4l_err(client, "Unable to set the power state ON\n");
+ return rval;
+ }
+
+ return 0;
+}
+
+static int lv8093_power_off(struct v4l2_subdev *subdev)
+{
+ struct lv8093_device *lens = to_lv8093_device(subdev);
+ struct i2c_client *client = v4l2_get_subdevdata(subdev);
+ int rval = -EINVAL;
+
+ if (lens->pdata->s_power)
+ rval = lens->pdata->s_power(subdev, 0);
+
+ if (rval < 0) {
+ v4l_err(client, "Unable to set the power state OFF\n");
+ return rval;
+ }
+
+ return 0;
+}
+
+/**
+ * lv8093_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. Returns 0 if
+ * lv8093 device could be found, otherwise returns appropriate error.
+ */
+static int lv8093_dev_init(struct v4l2_subdev *subdev)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(subdev);
+ int err;
+
+ err = lv8093_power_on(subdev);
+ if (err)
+ return -ENODEV;
+
+ err = lv8093_detect(client);
+ if (err < 0) {
+ v4l_err(client, "Unable to detect " LV8093_NAME
+ " lens HW\n");
+ return err;
+ }
+ pr_info(LV8093_NAME " Lens HW detected\n");
+
+ err = lv8093_reginit(client);
+ if (err < 0) {
+ v4l_err(client, "Unable to initialize " LV8093_NAME
+ " lens HW\n");
+ return err;
+ }
+
+ err = lv8093_power_off(subdev);
+ if (err)
+ return -ENODEV;
+
+ return 0;
+}
+
+/* --------------------------------------------------------------------------
+ * V4L2 subdev operations
+ */
+static int lv8093_g_chip_ident(struct v4l2_subdev *subdev,
+ struct v4l2_dbg_chip_ident *chip)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(subdev);
+
+ return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_LV8093, 0);
+}
+
+static int lv8093_s_config(struct v4l2_subdev *subdev, int irq,
+ void *platform_data)
+{
+ struct lv8093_device *lens = to_lv8093_device(subdev);
+
+ if (platform_data == NULL)
+ return -ENODEV;
+
+ lens->pdata = platform_data;
+
+ return lv8093_dev_init(subdev);
+}
+
+/**
+ * lv8093_queryctrl - V4L2 lens interface handler for VIDIOC_QUERYCTRL ioctl
+ * @s: pointer to standard V4L2 device structure
+ * @qc: standard V4L2 VIDIOC_QUERYCTRL ioctl structure
+ *
+ * If the requested control is supported, returns the control information
+ * from the video_control[] array. Otherwise, returns -EINVAL if the
+ * control is not supported.
+ */
+static int lv8093_queryctrl(struct v4l2_subdev *subdev,
+ struct v4l2_queryctrl *qc)
+{
+ int i;
+
+ i = find_vctrl(qc->id);
+ if (i == -EINVAL)
+ qc->flags = V4L2_CTRL_FLAG_DISABLED;
+
+ if (i < 0)
+ return -EINVAL;
+
+ *qc = video_control[i].qc;
+ return 0;
+}
+
+/**
+ * lv8093_s_ctrl - V4L2 LV8093 lens 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.
+ * Otherwise, returns -EINVAL if the control is not supported.
+ */
+static int lv8093_s_ctrl(struct v4l2_subdev *subdev, struct v4l2_control *vc)
+{
+ int retval = -EINVAL;
+ int i;
+ struct vcontrol *lvc;
+
+ i = find_vctrl(vc->id);
+ if (i < 0)
+ return -EINVAL;
+ lvc = &video_control[i];
+
+ switch (vc->id) {
+ case V4L2_CID_FOCUS_RELATIVE:
+ retval = lv8093_af_setfocus(subdev, (s16)vc->value);
+ break;
+ }
+
+ return retval;
+}
+
+/**
+ * lv8093_g_ctrl - V4L2 LV8093 lens interface handler for VIDIOC_G_CTRL ioctl
+ * @s: pointer to standard V4L2 device structure
+ * @vc: standard V4L2 VIDIOC_S_CTRL ioctl structure
+ *
+ * For V4L2_CID_FOCUS_RELATIVE control always returns the control's value
+ * as zero. However, the return value is used to return whether the device
+ * is busy still moving the lens. It will do this by returning -EBUSY (busy)
+ * or 0 (ready).
+ * Otherwise, returns -EINVAL if the control is not supported.
+ */
+static int lv8093_g_ctrl(struct v4l2_subdev *subdev, struct v4l2_control *vc)
+{
+ int i, retval = -EINVAL;
+ struct vcontrol *lvc;
+
+ i = find_vctrl(vc->id);
+ if (i < 0)
+ return -EINVAL;
+ lvc = &video_control[i];
+
+ switch (vc->id) {
+ case V4L2_CID_FOCUS_RELATIVE:
+ retval = lv8093_is_busy(subdev);
+ vc->value = 0;
+ break;
+ }
+ return retval;
+}
+
+/**
+ * lv8093_s_power - V4L2 sensor interface handler for vidioc_int_s_power_num
+ * @s: pointer to standard V4L2 device structure
+ * @on: power state to which device is to be set
+ *
+ * Sets devices power state to requested state, if possible.
+ */
+static int lv8093_s_power(struct v4l2_subdev *subdev, int on)
+{
+ struct lv8093_device *lens = to_lv8093_device(subdev);
+ struct i2c_client *client = v4l2_get_subdevdata(subdev);
+ int rval = 0;
+
+ if (on) {
+ rval = lv8093_power_on(subdev);
+ if (rval)
+ goto error;
+
+ if (!lens->power_state) {
+ rval = lv8093_reginit(client);
+ if (rval < 0) {
+ v4l_err(client, "Unable to initialize "
+ LV8093_NAME " lens HW\n");
+ return rval;
+ }
+ }
+ } else
+ rval = lv8093_power_off(subdev);
+
+ lens->power_state = on;
+error:
+ return rval;
+}
+
+static const struct v4l2_subdev_core_ops lv8093_core_ops = {
+ .g_chip_ident = lv8093_g_chip_ident,
+ .s_config = lv8093_s_config,
+ .queryctrl = lv8093_queryctrl,
+ .g_ctrl = lv8093_g_ctrl,
+ .s_ctrl = lv8093_s_ctrl,
+ .s_power = lv8093_s_power,
+};
+
+static const struct v4l2_subdev_ops lv8093_ops = {
+ .core = &lv8093_core_ops,
+};
+
+/**
+ * lv8093_probe - Probes the driver for valid I2C attachment.
+ * @client: Pointer to structure of I2C client.
+ *
+ * Returns 0 if successful, or -EBUSY if unable to get client attached data.
+ **/
+static int
+lv8093_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+ struct lv8093_device *lens;
+
+ lens = kzalloc(sizeof(*lens), GFP_KERNEL);
+ if (lens == NULL)
+ return -ENOMEM;
+
+ v4l2_i2c_subdev_init(&lens->subdev, client, &lv8093_ops);
+ return 0;
+}
+
+/**
+ * lv8093_remove - Routine when device its unregistered from I2C
+ * @client: Pointer to structure of I2C client.
+ *
+ * Returns 0 if successful, or -ENODEV if the client isn't attached.
+ **/
+static int __exit lv8093_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *subdev = i2c_get_clientdata(client);
+ struct lv8093_device *lens = to_lv8093_device(subdev);
+
+ v4l2_device_unregister_subdev(&lens->subdev);
+ kfree(lens);
+ return 0;
+}
+
+static const struct i2c_device_id lv8093_id[] = {
+ {LV8093_NAME, 0},
+ {}
+};
+
+MODULE_DEVICE_TABLE(i2c, lv8093_id);
+
+static struct i2c_driver lv8093_i2c_driver = {
+ .driver = {
+ .name = LV8093_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = lv8093_probe,
+ .remove = __exit_p(lv8093_remove),
+ .id_table = lv8093_id,
+};
+
+/**
+ * lv8093_init - Module initialisation.
+ *
+ * Returns 0 if successful, or -EINVAL if device couldn't be initialized, or
+ * added as a character device.
+ **/
+static int __init lv8093_init(void)
+{
+ int err;
+
+ err = i2c_add_driver(&lv8093_i2c_driver);
+ if (err)
+ goto fail;
+ pr_info("Registered " LV8093_NAME " as i2c device.\n");
+
+ return err;
+fail:
+ pr_err("Failed to register " LV8093_NAME " as i2c driver.\n");
+ return err;
+}
+
+late_initcall(lv8093_init);
+
+/**
+ * lv8093_cleanup - Module cleanup.
+ **/
+static void __exit lv8093_cleanup(void)
+{
+ i2c_del_driver(&lv8093_i2c_driver);
+}
+
+module_exit(lv8093_cleanup);
+
+MODULE_AUTHOR("Texas Instruments");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("LV8093 LENS driver");
diff --git a/drivers/media/video/lv8093_regs.h
b/drivers/media/video/lv8093_regs.h
new file mode 100644
index 0000000..aaebf03
--- /dev/null
+++ b/drivers/media/video/lv8093_regs.h
@@ -0,0 +1,76 @@
+/*
+ * lv8093_regs.h
+ *
+ * Copyright (C) 2008-2009 Texas Instruments.
+ * Copyright (C) 2009 Hewlett-Packard.
+ *
+ * This package 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 PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * Register defines for Lens piezo-actuator device
+ *
+ */
+#ifndef LV8093_REGS_H
+#define LV8093_REGS_H
+
+#include <media/v4l2-int-device.h>
+
+#define LV8093_I2C_RETRY_COUNT 5
+
+#define CAMAF_LV8093_DISABLE 0x1
+#define CAMAF_LV8093_ENABLE 0x0
+#define CAMAF_LV8093_DRVPLS_REG 0x0
+#define CAMAF_LV8093_CTL_REG 0x1
+#define CAMAF_LV8093_RST_REG 0x2
+#define CAMAF_LV8093_GTAS_REG 0x3
+#define CAMAF_LV8093_GTBR_REG 0x4
+#define CAMAF_LV8093_GTBS_REG 0x5
+#define CAMAF_LV8093_STP_REG 0x6
+#define CAMAF_LV8093_MOV_REG 0x7
+#define CAMAF_LV8093_MAC_DIR 0x80
+#define CAMAF_LV8093_INF_DIR 0x00
+#define CAMAF_LV8093_GATE0 0x00
+#define CAMAF_LV8093_GATE1 0x80
+#define CAMAF_LV8093_ENIN 0x20
+#define CAMAF_LV8093_CKSEL_ONE 0x18
+#define CAMAF_LV8093_CKSEL_HALF 0x08
+#define CAMAF_LV8093_CKSEL_QTR 0x00
+#define CAMAF_LV8093_RET2 0x00
+#define CAMAF_LV8093_RET1 0x02
+#define CAMAF_LV8093_RET3 0x04
+#define CAMAF_LV8093_RET4 0x06
+#define CAMAF_LV8093_INIT_OFF 0x01
+#define CAMAF_LV8093_INIT_ON 0x00
+#define CAMAF_LV8093_BUSY 0x80
+#define CAMAF_LV8093_REGDATA(REG, DATA) (((REG) << 8) | (DATA))
+
+#define CAMAF_LV8093_POWERDN(ARG) (((ARG) & 0x1) << 15)
+#define CAMAF_LV8093_POWERDN_R(ARG) (((ARG) >> 15) & 0x1)
+
+#define CAMAF_LV8093_DATA(ARG) (((ARG) & 0xFF) << 6)
+#define CAMAF_LV8093_DATA_R(ARG) (((ARG) >> 6) & 0xFF)
+#define CAMAF_FREQUENCY_EQ1(mclk) ((u16)(mclk/16000))
+
+/* State of lens */
+#define LENS_DETECTED 1
+#define LENS_NOT_DETECTED 0
+
+/* Focus control values */
+#define LV8093_MAX_RELATIVE_STEP 127
+
+/* Initialization Mode Settings */
+#define LV8093_TIME_GATEA 23 /* First pulse width. */
+#define LV8093_TIME_OFF 2 /* Off time between
pulses. */
+#define LV8093_TIME_GATEB 29 /* Second pulse width. */
+#define LV8093_STP 24 /* Pulse repetitions. */
+/* Numbers of clock periods per cycle: */
+/* 18MHz clock, period = 55.6 nsec */
+#define LV8093_CLK_PER_PERIOD 104
+
+#endif /* End of of LV8093_REGS_H */
+
diff --git a/include/media/lv8093.h b/include/media/lv8093.h
new file mode 100644
index 0000000..8c1eb8f
--- /dev/null
+++ b/include/media/lv8093.h
@@ -0,0 +1,40 @@
+/*
+ * lv8093.h
+ *
+ * Copyright (C) 2008-2009 Texas Instruments.
+ * Copyright (C) 2009 Hewlett-Packard.
+ *
+ * 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.
+ *
+ */
+
+#ifndef LV8093_H
+#define LV8093_H
+
+#include <media/v4l2-subdev.h>
+
+/* i2c slave address = 0xE4 */
+#define LV8093_AF_I2C_ADDR 0x72
+#define LV8093_NAME "lv8093"
+
+/**
+ * struct lv8093_platform_data - platform data values and access functions
+ * @power_set: Power state access function, zero is off, non-zero is on.
+ * @priv_data_set: device private data (pointer) access function
+ */
+struct lv8093_platform_data {
+ int (*s_power)(struct v4l2_subdev *subdev, int on);
+};
+
+struct lv8093_device {
+ struct lv8093_platform_data *pdata;
+ struct v4l2_subdev subdev;
+ int state;
+ int power_state;
+};
+
+#define to_lv8093_device(sd) container_of(sd, struct lv8093_device, subdev)
+
+#endif /* End of of LV8093_H */
diff --git a/include/media/v4l2-chip-ident.h b/include/media/v4l2-chip-ident.h
index 673c99a..e113c80 100644
--- a/include/media/v4l2-chip-ident.h
+++ b/include/media/v4l2-chip-ident.h
@@ -311,6 +311,9 @@ enum {
/* Sony IMX046 sensor: just ident 65046 */
V4L2_IDENT_IMX046 = 65046,
+ /* LV8093 lens: just ident 68093 */
+ V4L2_IDENT_LV8093 = 68093,
+
/* Don't just add new IDs at the end: KEEP THIS LIST ORDERED BY ID! */
};
--
1.6.3.3
--
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