diff options
Diffstat (limited to 'drivers/staging/media/atomisp/i2c/imx/dw9718.c')
| -rw-r--r-- | drivers/staging/media/atomisp/i2c/imx/dw9718.c | 233 |
1 files changed, 0 insertions, 233 deletions
diff --git a/drivers/staging/media/atomisp/i2c/imx/dw9718.c b/drivers/staging/media/atomisp/i2c/imx/dw9718.c deleted file mode 100644 index c02b9f0a2440..000000000000 --- a/drivers/staging/media/atomisp/i2c/imx/dw9718.c +++ /dev/null @@ -1,233 +0,0 @@ -/* - * Support for dw9718 vcm driver. - * - * Copyright (c) 2014 Intel Corporation. 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 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., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - * - */ - -#include <linux/delay.h> -#include "dw9718.h" - -static struct dw9718_device dw9718_dev; - -static int dw9718_i2c_rd8(struct i2c_client *client, u8 reg, u8 *val) -{ - struct i2c_msg msg[2]; - u8 buf[2] = { reg }; - - msg[0].addr = DW9718_VCM_ADDR; - msg[0].flags = 0; - msg[0].len = 1; - msg[0].buf = buf; - - msg[1].addr = DW9718_VCM_ADDR; - msg[1].flags = I2C_M_RD; - msg[1].len = 1; - msg[1].buf = &buf[1]; - *val = 0; - - if (i2c_transfer(client->adapter, msg, 2) != 2) - return -EIO; - *val = buf[1]; - - return 0; -} - -static int dw9718_i2c_wr8(struct i2c_client *client, u8 reg, u8 val) -{ - struct i2c_msg msg; - u8 buf[2] = { reg, val}; - - msg.addr = DW9718_VCM_ADDR; - msg.flags = 0; - msg.len = sizeof(buf); - msg.buf = buf; - - if (i2c_transfer(client->adapter, &msg, 1) != 1) - return -EIO; - - return 0; -} - -static int dw9718_i2c_wr16(struct i2c_client *client, u8 reg, u16 val) -{ - struct i2c_msg msg; - u8 buf[3] = { reg, (u8)(val >> 8), (u8)(val & 0xff)}; - - msg.addr = DW9718_VCM_ADDR; - msg.flags = 0; - msg.len = sizeof(buf); - msg.buf = buf; - - if (i2c_transfer(client->adapter, &msg, 1) != 1) - return -EIO; - - return 0; -} - -int dw9718_t_focus_abs(struct v4l2_subdev *sd, s32 value) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - int ret; - - value = clamp(value, 0, DW9718_MAX_FOCUS_POS); - ret = dw9718_i2c_wr16(client, DW9718_DATA_M, value); - /*pr_info("%s: value = %d\n", __func__, value);*/ - if (ret < 0) - return ret; - - getnstimeofday(&dw9718_dev.focus_time); - dw9718_dev.focus = value; - - return 0; -} - -int dw9718_vcm_power_up(struct v4l2_subdev *sd) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - int ret; - u8 value; - - if (dw9718_dev.power_on) - return 0; - - /* Enable power */ - ret = dw9718_dev.platform_data->power_ctrl(sd, 1); - if (ret) { - dev_err(&client->dev, "DW9718_PD power_ctrl failed %d\n", ret); - return ret; - } - /* Wait for VBAT to stabilize */ - udelay(100); - - /* Detect device */ - ret = dw9718_i2c_rd8(client, DW9718_SACT, &value); - if (ret < 0) { - dev_err(&client->dev, "read DW9718_SACT failed %d\n", ret); - goto fail_powerdown; - } - /* - * WORKAROUND: for module P8V12F-203 which are used on - * Cherrytrail Refresh Davis Reef AoB, register SACT is not - * returning default value as spec. But VCM works as expected and - * root cause is still under discussion with vendor. - * workaround here to avoid aborting the power up sequence and just - * give a warning about this error. - */ - if (value != DW9718_SACT_DEFAULT_VAL) - dev_warn(&client->dev, "%s error, incorrect ID\n", __func__); - - /* Initialize according to recommended settings */ - ret = dw9718_i2c_wr8(client, DW9718_CONTROL, - DW9718_CONTROL_SW_LINEAR | - DW9718_CONTROL_S_SAC4 | - DW9718_CONTROL_OCP_DISABLE | - DW9718_CONTROL_UVLO_DISABLE); - if (ret < 0) { - dev_err(&client->dev, "write DW9718_CONTROL failed %d\n", ret); - goto fail_powerdown; - } - ret = dw9718_i2c_wr8(client, DW9718_SACT, - DW9718_SACT_MULT_TWO | - DW9718_SACT_PERIOD_8_8MS); - if (ret < 0) { - dev_err(&client->dev, "write DW9718_SACT failed %d\n", ret); - goto fail_powerdown; - } - - ret = dw9718_t_focus_abs(sd, dw9718_dev.focus); - if (ret) - return ret; - dw9718_dev.initialized = true; - dw9718_dev.power_on = 1; - - return 0; - -fail_powerdown: - dev_err(&client->dev, "%s error, powerup failed\n", __func__); - dw9718_dev.platform_data->power_ctrl(sd, 0); - return ret; -} - -int dw9718_vcm_power_down(struct v4l2_subdev *sd) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - int ret; - - if (!dw9718_dev.power_on) - return 0; - - ret = dw9718_dev.platform_data->power_ctrl(sd, 0); - if (ret) { - dev_err(&client->dev, "%s power_ctrl failed\n", - __func__); - return ret; - } - dw9718_dev.power_on = 0; - - return 0; -} - -int dw9718_q_focus_status(struct v4l2_subdev *sd, s32 *value) -{ - static const struct timespec move_time = { - .tv_sec = 0, - .tv_nsec = 60000000 - }; - struct timespec current_time, finish_time, delta_time; - - getnstimeofday(¤t_time); - finish_time = timespec_add(dw9718_dev.focus_time, move_time); - delta_time = timespec_sub(current_time, finish_time); - if (delta_time.tv_sec >= 0 && delta_time.tv_nsec >= 0) { - *value = ATOMISP_FOCUS_HP_COMPLETE | - ATOMISP_FOCUS_STATUS_ACCEPTS_NEW_MOVE; - } else { - *value = ATOMISP_FOCUS_STATUS_MOVING | - ATOMISP_FOCUS_HP_IN_PROGRESS; - } - - return 0; -} - -int dw9718_t_focus_rel(struct v4l2_subdev *sd, s32 value) -{ - return dw9718_t_focus_abs(sd, dw9718_dev.focus + value); -} - -int dw9718_q_focus_abs(struct v4l2_subdev *sd, s32 *value) -{ - *value = dw9718_dev.focus; - return 0; -} -int dw9718_t_vcm_slew(struct v4l2_subdev *sd, s32 value) -{ - return 0; -} - -int dw9718_t_vcm_timing(struct v4l2_subdev *sd, s32 value) -{ - return 0; -} - -int dw9718_vcm_init(struct v4l2_subdev *sd) -{ - dw9718_dev.platform_data = camera_get_af_platform_data(); - dw9718_dev.focus = DW9718_DEFAULT_FOCUS_POSITION; - dw9718_dev.power_on = 0; - return (NULL == dw9718_dev.platform_data) ? -ENODEV : 0; -} |