diff options
Diffstat (limited to 'drivers/media/i2c/as3645a.c')
| -rw-r--r-- | drivers/media/i2c/as3645a.c | 880 |
1 files changed, 0 insertions, 880 deletions
diff --git a/drivers/media/i2c/as3645a.c b/drivers/media/i2c/as3645a.c deleted file mode 100644 index af5db71a0888..000000000000 --- a/drivers/media/i2c/as3645a.c +++ /dev/null @@ -1,880 +0,0 @@ -/* - * drivers/media/i2c/as3645a.c - AS3645A and LM3555 flash controllers driver - * - * Copyright (C) 2008-2011 Nokia Corporation - * Copyright (c) 2011, Intel Corporation. - * - * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com> - * - * 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. - * - * TODO: - * - Check hardware FSTROBE control when sensor driver add support for this - * - */ - -#include <linux/delay.h> -#include <linux/i2c.h> -#include <linux/module.h> -#include <linux/mutex.h> -#include <linux/slab.h> - -#include <media/i2c/as3645a.h> -#include <media/v4l2-ctrls.h> -#include <media/v4l2-device.h> - -#define AS_TIMER_MS_TO_CODE(t) (((t) - 100) / 50) -#define AS_TIMER_CODE_TO_MS(c) (50 * (c) + 100) - -/* Register definitions */ - -/* Read-only Design info register: Reset state: xxxx 0001 */ -#define AS_DESIGN_INFO_REG 0x00 -#define AS_DESIGN_INFO_FACTORY(x) (((x) >> 4)) -#define AS_DESIGN_INFO_MODEL(x) ((x) & 0x0f) - -/* Read-only Version control register: Reset state: 0000 0000 - * for first engineering samples - */ -#define AS_VERSION_CONTROL_REG 0x01 -#define AS_VERSION_CONTROL_RFU(x) (((x) >> 4)) -#define AS_VERSION_CONTROL_VERSION(x) ((x) & 0x0f) - -/* Read / Write (Indicator and timer register): Reset state: 0000 1111 */ -#define AS_INDICATOR_AND_TIMER_REG 0x02 -#define AS_INDICATOR_AND_TIMER_TIMEOUT_SHIFT 0 -#define AS_INDICATOR_AND_TIMER_VREF_SHIFT 4 -#define AS_INDICATOR_AND_TIMER_INDICATOR_SHIFT 6 - -/* Read / Write (Current set register): Reset state: 0110 1001 */ -#define AS_CURRENT_SET_REG 0x03 -#define AS_CURRENT_ASSIST_LIGHT_SHIFT 0 -#define AS_CURRENT_LED_DET_ON (1 << 3) -#define AS_CURRENT_FLASH_CURRENT_SHIFT 4 - -/* Read / Write (Control register): Reset state: 1011 0100 */ -#define AS_CONTROL_REG 0x04 -#define AS_CONTROL_MODE_SETTING_SHIFT 0 -#define AS_CONTROL_STROBE_ON (1 << 2) -#define AS_CONTROL_OUT_ON (1 << 3) -#define AS_CONTROL_EXT_TORCH_ON (1 << 4) -#define AS_CONTROL_STROBE_TYPE_EDGE (0 << 5) -#define AS_CONTROL_STROBE_TYPE_LEVEL (1 << 5) -#define AS_CONTROL_COIL_PEAK_SHIFT 6 - -/* Read only (D3 is read / write) (Fault and info): Reset state: 0000 x000 */ -#define AS_FAULT_INFO_REG 0x05 -#define AS_FAULT_INFO_INDUCTOR_PEAK_LIMIT (1 << 1) -#define AS_FAULT_INFO_INDICATOR_LED (1 << 2) -#define AS_FAULT_INFO_LED_AMOUNT (1 << 3) -#define AS_FAULT_INFO_TIMEOUT (1 << 4) -#define AS_FAULT_INFO_OVER_TEMPERATURE (1 << 5) -#define AS_FAULT_INFO_SHORT_CIRCUIT (1 << 6) -#define AS_FAULT_INFO_OVER_VOLTAGE (1 << 7) - -/* Boost register */ -#define AS_BOOST_REG 0x0d -#define AS_BOOST_CURRENT_DISABLE (0 << 0) -#define AS_BOOST_CURRENT_ENABLE (1 << 0) - -/* Password register is used to unlock boost register writing */ -#define AS_PASSWORD_REG 0x0f -#define AS_PASSWORD_UNLOCK_VALUE 0x55 - -enum as_mode { - AS_MODE_EXT_TORCH = 0 << AS_CONTROL_MODE_SETTING_SHIFT, - AS_MODE_INDICATOR = 1 << AS_CONTROL_MODE_SETTING_SHIFT, - AS_MODE_ASSIST = 2 << AS_CONTROL_MODE_SETTING_SHIFT, - AS_MODE_FLASH = 3 << AS_CONTROL_MODE_SETTING_SHIFT, -}; - -/* - * struct as3645a - * - * @subdev: V4L2 subdev - * @pdata: Flash platform data - * @power_lock: Protects power_count - * @power_count: Power reference count - * @led_mode: V4L2 flash LED mode - * @timeout: Flash timeout in microseconds - * @flash_current: Flash current (0=200mA ... 15=500mA). Maximum - * values are 400mA for two LEDs and 500mA for one LED. - * @assist_current: Torch/Assist light current (0=20mA, 1=40mA ... 7=160mA) - * @indicator_current: Indicator LED current (0=0mA, 1=2.5mA ... 4=10mA) - * @strobe_source: Flash strobe source (software or external) - */ -struct as3645a { - struct v4l2_subdev subdev; - const struct as3645a_platform_data *pdata; - - struct mutex power_lock; - int power_count; - - /* Controls */ - struct v4l2_ctrl_handler ctrls; - - enum v4l2_flash_led_mode led_mode; - unsigned int timeout; - u8 flash_current; - u8 assist_current; - u8 indicator_current; - enum v4l2_flash_strobe_source strobe_source; -}; - -#define to_as3645a(sd) container_of(sd, struct as3645a, subdev) - -/* Return negative errno else zero on success */ -static int as3645a_write(struct as3645a *flash, u8 addr, u8 val) -{ - struct i2c_client *client = v4l2_get_subdevdata(&flash->subdev); - int rval; - - rval = i2c_smbus_write_byte_data(client, addr, val); - - dev_dbg(&client->dev, "Write Addr:%02X Val:%02X %s\n", addr, val, - rval < 0 ? "fail" : "ok"); - - return rval; -} - -/* Return negative errno else a data byte received from the device. */ -static int as3645a_read(struct as3645a *flash, u8 addr) -{ - struct i2c_client *client = v4l2_get_subdevdata(&flash->subdev); - int rval; - - rval = i2c_smbus_read_byte_data(client, addr); - - dev_dbg(&client->dev, "Read Addr:%02X Val:%02X %s\n", addr, rval, - rval < 0 ? "fail" : "ok"); - - return rval; -} - -/* ----------------------------------------------------------------------------- - * Hardware configuration and trigger - */ - -/* - * as3645a_set_config - Set flash configuration registers - * @flash: The flash - * - * Configure the hardware with flash, assist and indicator currents, as well as - * flash timeout. - * - * Return 0 on success, or a negative error code if an I2C communication error - * occurred. - */ -static int as3645a_set_config(struct as3645a *flash) -{ - int ret; - u8 val; - - val = (flash->flash_current << AS_CURRENT_FLASH_CURRENT_SHIFT) - | (flash->assist_current << AS_CURRENT_ASSIST_LIGHT_SHIFT) - | AS_CURRENT_LED_DET_ON; - - ret = as3645a_write(flash, AS_CURRENT_SET_REG, val); - if (ret < 0) - return ret; - - val = AS_TIMER_MS_TO_CODE(flash->timeout / 1000) - << AS_INDICATOR_AND_TIMER_TIMEOUT_SHIFT; - - val |= (flash->pdata->vref << AS_INDICATOR_AND_TIMER_VREF_SHIFT) - | ((flash->indicator_current ? flash->indicator_current - 1 : 0) - << AS_INDICATOR_AND_TIMER_INDICATOR_SHIFT); - - return as3645a_write(flash, AS_INDICATOR_AND_TIMER_REG, val); -} - -/* - * as3645a_set_control - Set flash control register - * @flash: The flash - * @mode: Desired output mode - * @on: Desired output state - * - * Configure the hardware with output mode and state. - * - * Return 0 on success, or a negative error code if an I2C communication error - * occurred. - */ -static int -as3645a_set_control(struct as3645a *flash, enum as_mode mode, bool on) -{ - u8 reg; - - /* Configure output parameters and operation mode. */ - reg = (flash->pdata->peak << AS_CONTROL_COIL_PEAK_SHIFT) - | (on ? AS_CONTROL_OUT_ON : 0) - | mode; - - if (flash->led_mode == V4L2_FLASH_LED_MODE_FLASH && - flash->strobe_source == V4L2_FLASH_STROBE_SOURCE_EXTERNAL) { - reg |= AS_CONTROL_STROBE_TYPE_LEVEL - | AS_CONTROL_STROBE_ON; - } - - return as3645a_write(flash, AS_CONTROL_REG, reg); -} - -/* - * as3645a_set_output - Configure output and operation mode - * @flash: Flash controller - * @strobe: Strobe the flash (only valid in flash mode) - * - * Turn the LEDs output on/off and set the operation mode based on the current - * parameters. - * - * The AS3645A can't control the indicator LED independently of the flash/torch - * LED. If the flash controller is in V4L2_FLASH_LED_MODE_NONE mode, set the - * chip to indicator mode. Otherwise set it to assist light (torch) or flash - * mode. - * - * In indicator and assist modes, turn the output on/off based on the indicator - * and torch currents. In software strobe flash mode, turn the output on/off - * based on the strobe parameter. - */ -static int as3645a_set_output(struct as3645a *flash, bool strobe) -{ - enum as_mode mode; - bool on; - - switch (flash->led_mode) { - case V4L2_FLASH_LED_MODE_NONE: - on = flash->indicator_current != 0; - mode = AS_MODE_INDICATOR; - break; - case V4L2_FLASH_LED_MODE_TORCH: - on = true; - mode = AS_MODE_ASSIST; - break; - case V4L2_FLASH_LED_MODE_FLASH: - on = strobe; - mode = AS_MODE_FLASH; - break; - default: - BUG(); - } - - /* Configure output parameters and operation mode. */ - return as3645a_set_control(flash, mode, on); -} - -/* ----------------------------------------------------------------------------- - * V4L2 controls - */ - -static int as3645a_is_active(struct as3645a *flash) -{ - int ret; - - ret = as3645a_read(flash, AS_CONTROL_REG); - return ret < 0 ? ret : !!(ret & AS_CONTROL_OUT_ON); -} - -static int as3645a_read_fault(struct as3645a *flash) -{ - struct i2c_client *client = v4l2_get_subdevdata(&flash->subdev); - int rval; - - /* NOTE: reading register clear fault status */ - rval = as3645a_read(flash, AS_FAULT_INFO_REG); - if (rval < 0) - return rval; - - if (rval & AS_FAULT_INFO_INDUCTOR_PEAK_LIMIT) - dev_dbg(&client->dev, "Inductor Peak limit fault\n"); - - if (rval & AS_FAULT_INFO_INDICATOR_LED) - dev_dbg(&client->dev, - "Indicator LED fault: Short circuit or open loop\n"); - - dev_dbg(&client->dev, "%u connected LEDs\n", - rval & AS_FAULT_INFO_LED_AMOUNT ? 2 : 1); - - if (rval & AS_FAULT_INFO_TIMEOUT) - dev_dbg(&client->dev, "Timeout fault\n"); - - if (rval & AS_FAULT_INFO_OVER_TEMPERATURE) - dev_dbg(&client->dev, "Over temperature fault\n"); - - if (rval & AS_FAULT_INFO_SHORT_CIRCUIT) - dev_dbg(&client->dev, "Short circuit fault\n"); - - if (rval & AS_FAULT_INFO_OVER_VOLTAGE) - dev_dbg(&client->dev, - "Over voltage fault: Indicates missing capacitor or open connection\n"); - - return rval; -} - -static int as3645a_get_ctrl(struct v4l2_ctrl *ctrl) -{ - struct as3645a *flash = - container_of(ctrl->handler, struct as3645a, ctrls); - struct i2c_client *client = v4l2_get_subdevdata(&flash->subdev); - int value; - - switch (ctrl->id) { - case V4L2_CID_FLASH_FAULT: - value = as3645a_read_fault(flash); - if (value < 0) - return value; - - ctrl->cur.val = 0; - if (value & AS_FAULT_INFO_SHORT_CIRCUIT) - ctrl->cur.val |= V4L2_FLASH_FAULT_SHORT_CIRCUIT; - if (value & AS_FAULT_INFO_OVER_TEMPERATURE) - ctrl->cur.val |= V4L2_FLASH_FAULT_OVER_TEMPERATURE; - if (value & AS_FAULT_INFO_TIMEOUT) - ctrl->cur.val |= V4L2_FLASH_FAULT_TIMEOUT; - if (value & AS_FAULT_INFO_OVER_VOLTAGE) - ctrl->cur.val |= V4L2_FLASH_FAULT_OVER_VOLTAGE; - if (value & AS_FAULT_INFO_INDUCTOR_PEAK_LIMIT) - ctrl->cur.val |= V4L2_FLASH_FAULT_OVER_CURRENT; - if (value & AS_FAULT_INFO_INDICATOR_LED) - ctrl->cur.val |= V4L2_FLASH_FAULT_INDICATOR; - break; - - case V4L2_CID_FLASH_STROBE_STATUS: - if (flash->led_mode != V4L2_FLASH_LED_MODE_FLASH) { - ctrl->cur.val = 0; - break; - } - - value = as3645a_is_active(flash); - if (value < 0) - return value; - - ctrl->cur.val = value; - break; - } - - dev_dbg(&client->dev, "G_CTRL %08x:%d\n", ctrl->id, ctrl->cur.val); - - return 0; -} - -static int as3645a_set_ctrl(struct v4l2_ctrl *ctrl) -{ - struct as3645a *flash = - container_of(ctrl->handler, struct as3645a, ctrls); - struct i2c_client *client = v4l2_get_subdevdata(&flash->subdev); - int ret; - - dev_dbg(&client->dev, "S_CTRL %08x:%d\n", ctrl->id, ctrl->val); - - /* If a control that doesn't apply to the current mode is modified, - * we store the value and return immediately. The setting will be - * applied when the LED mode is changed. Otherwise we apply the setting - * immediately. - */ - - switch (ctrl->id) { - case V4L2_CID_FLASH_LED_MODE: - if (flash->indicator_current) - return -EBUSY; - - ret = as3645a_set_config(flash); - if (ret < 0) - return ret; - - flash->led_mode = ctrl->val; - return as3645a_set_output(flash, false); - - case V4L2_CID_FLASH_STROBE_SOURCE: - flash->strobe_source = ctrl->val; - - /* Applies to flash mode only. */ - if (flash->led_mode != V4L2_FLASH_LED_MODE_FLASH) - break; - - return as3645a_set_output(flash, false); - - case V4L2_CID_FLASH_STROBE: - if (flash->led_mode != V4L2_FLASH_LED_MODE_FLASH) - return -EBUSY; - - return as3645a_set_output(flash, true); - - case V4L2_CID_FLASH_STROBE_STOP: - if (flash->led_mode != V4L2_FLASH_LED_MODE_FLASH) - return -EBUSY; - - return as3645a_set_output(flash, false); - - case V4L2_CID_FLASH_TIMEOUT: - flash->timeout = ctrl->val; - - /* Applies to flash mode only. */ - if (flash->led_mode != V4L2_FLASH_LED_MODE_FLASH) - break; - - return as3645a_set_config(flash); - - case V4L2_CID_FLASH_INTENSITY: - flash->flash_current = (ctrl->val - AS3645A_FLASH_INTENSITY_MIN) - / AS3645A_FLASH_INTENSITY_STEP; - - /* Applies to flash mode only. */ - if (flash->led_mode != V4L2_FLASH_LED_MODE_FLASH) - break; - - return as3645a_set_config(flash); - - case V4L2_CID_FLASH_TORCH_INTENSITY: - flash->assist_current = - (ctrl->val - AS3645A_TORCH_INTENSITY_MIN) - / AS3645A_TORCH_INTENSITY_STEP; - - /* Applies to torch mode only. */ - if (flash->led_mode != V4L2_FLASH_LED_MODE_TORCH) - break; - - return as3645a_set_config(flash); - - case V4L2_CID_FLASH_INDICATOR_INTENSITY: - if (flash->led_mode != V4L2_FLASH_LED_MODE_NONE) - return -EBUSY; - - flash->indicator_current = - (ctrl->val - AS3645A_INDICATOR_INTENSITY_MIN) - / AS3645A_INDICATOR_INTENSITY_STEP; - - ret = as3645a_set_config(flash); - if (ret < 0) - return ret; - - if ((ctrl->val == 0) == (ctrl->cur.val == 0)) - break; - - return as3645a_set_output(flash, false); - } - - return 0; -} - -static const struct v4l2_ctrl_ops as3645a_ctrl_ops = { - .g_volatile_ctrl = as3645a_get_ctrl, - .s_ctrl = as3645a_set_ctrl, -}; - -/* ----------------------------------------------------------------------------- - * V4L2 subdev core operations - */ - -/* Put device into know state. */ -static int as3645a_setup(struct as3645a *flash) -{ - struct i2c_client *client = v4l2_get_subdevdata(&flash->subdev); - int ret; - - /* clear errors */ - ret = as3645a_read(flash, AS_FAULT_INFO_REG); - if (ret < 0) - return ret; - - dev_dbg(&client->dev, "Fault info: %02x\n", ret); - - ret = as3645a_set_config(flash); - if (ret < 0) - return ret; - - ret = as3645a_set_output(flash, false); - if (ret < 0) - return ret; - - /* read status */ - ret = as3645a_read_fault(flash); - if (ret < 0) - return ret; - - dev_dbg(&client->dev, "AS_INDICATOR_AND_TIMER_REG: %02x\n", - as3645a_read(flash, AS_INDICATOR_AND_TIMER_REG)); - dev_dbg(&client->dev, "AS_CURRENT_SET_REG: %02x\n", - as3645a_read(flash, AS_CURRENT_SET_REG)); - dev_dbg(&client->dev, "AS_CONTROL_REG: %02x\n", - as3645a_read(flash, AS_CONTROL_REG)); - - return ret & ~AS_FAULT_INFO_LED_AMOUNT ? -EIO : 0; -} - -static int __as3645a_set_power(struct as3645a *flash, int on) -{ - int ret; - - if (!on) - as3645a_set_control(flash, AS_MODE_EXT_TORCH, false); - - if (flash->pdata->set_power) { - ret = flash->pdata->set_power(&flash->subdev, on); - if (ret < 0) - return ret; - } - - if (!on) - return 0; - - ret = as3645a_setup(flash); - if (ret < 0) { - if (flash->pdata->set_power) - flash->pdata->set_power(&flash->subdev, 0); - } - - return ret; -} - -static int as3645a_set_power(struct v4l2_subdev *sd, int on) -{ - struct as3645a *flash = to_as3645a(sd); - int ret = 0; - - mutex_lock(&flash->power_lock); - - if (flash->power_count == !on) { - ret = __as3645a_set_power(flash, !!on); - if (ret < 0) - goto done; - } - - flash->power_count += on ? 1 : -1; - WARN_ON(flash->power_count < 0); - -done: - mutex_unlock(&flash->power_lock); - return ret; -} - -static int as3645a_registered(struct v4l2_subdev *sd) -{ - struct as3645a *flash = to_as3645a(sd); - struct i2c_client *client = v4l2_get_subdevdata(sd); - int rval, man, model, rfu, version; - const char *vendor; - - /* Power up the flash driver and read manufacturer ID, model ID, RFU - * and version. - */ - rval = as3645a_set_power(&flash->subdev, 1); - if (rval < 0) - return rval; - - rval = as3645a_read(flash, AS_DESIGN_INFO_REG); - if (rval < 0) - goto power_off; - - man = AS_DESIGN_INFO_FACTORY(rval); - model = AS_DESIGN_INFO_MODEL(rval); - - rval = as3645a_read(flash, AS_VERSION_CONTROL_REG); - if (rval < 0) - goto power_off; - - rfu = AS_VERSION_CONTROL_RFU(rval); - version = AS_VERSION_CONTROL_VERSION(rval); - - /* Verify the chip model and version. */ - if (model != 0x01 || rfu != 0x00) { - dev_err(&client->dev, - "AS3645A not detected (model %d rfu %d)\n", model, rfu); - rval = -ENODEV; - goto power_off; - } - - switch (man) { - case 1: - vendor = "AMS, Austria Micro Systems"; - break; - case 2: - vendor = "ADI, Analog Devices Inc."; - break; - case 3: - vendor = "NSC, National Semiconductor"; - break; - case 4: - vendor = "NXP"; - break; - case 5: - vendor = "TI, Texas Instrument"; - break; - default: - vendor = "Unknown"; - } - - dev_info(&client->dev, "Chip vendor: %s (%d) Version: %d\n", vendor, - man, version); - - rval = as3645a_write(flash, AS_PASSWORD_REG, AS_PASSWORD_UNLOCK_VALUE); - if (rval < 0) - goto power_off; - - rval = as3645a_write(flash, AS_BOOST_REG, AS_BOOST_CURRENT_DISABLE); - if (rval < 0) - goto power_off; - - /* Setup default values. This makes sure that the chip is in a known - * state, in case the power rail can't be controlled. - */ - rval = as3645a_setup(flash); - -power_off: - as3645a_set_power(&flash->subdev, 0); - - return rval; -} - -static int as3645a_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) -{ - return as3645a_set_power(sd, 1); -} - -static int as3645a_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) -{ - return as3645a_set_power(sd, 0); -} - -static const struct v4l2_subdev_core_ops as3645a_core_ops = { - .s_power = as3645a_set_power, -}; - -static const struct v4l2_subdev_ops as3645a_ops = { - .core = &as3645a_core_ops, -}; - -static const struct v4l2_subdev_internal_ops as3645a_internal_ops = { - .registered = as3645a_registered, - .open = as3645a_open, - .close = as3645a_close, -}; - -/* ----------------------------------------------------------------------------- - * I2C driver - */ -#ifdef CONFIG_PM - -static int as3645a_suspend(struct device *dev) -{ - struct i2c_client *client = to_i2c_client(dev); - struct v4l2_subdev *subdev = i2c_get_clientdata(client); - struct as3645a *flash = to_as3645a(subdev); - int rval; - - if (flash->power_count == 0) - return 0; - - rval = __as3645a_set_power(flash, 0); - - dev_dbg(&client->dev, "Suspend %s\n", rval < 0 ? "failed" : "ok"); - - return rval; -} - -static int as3645a_resume(struct device *dev) -{ - struct i2c_client *client = to_i2c_client(dev); - struct v4l2_subdev *subdev = i2c_get_clientdata(client); - struct as3645a *flash = to_as3645a(subdev); - int rval; - - if (flash->power_count == 0) - return 0; - - rval = __as3645a_set_power(flash, 1); - - dev_dbg(&client->dev, "Resume %s\n", rval < 0 ? "fail" : "ok"); - - return rval; -} - -#else - -#define as3645a_suspend NULL -#define as3645a_resume NULL - -#endif /* CONFIG_PM */ - -/* - * as3645a_init_controls - Create controls - * @flash: The flash - * - * The number of LEDs reported in platform data is used to compute default - * limits. Parameters passed through platform data can override those limits. - */ -static int as3645a_init_controls(struct as3645a *flash) -{ - const struct as3645a_platform_data *pdata = flash->pdata; - struct v4l2_ctrl *ctrl; - int maximum; - - v4l2_ctrl_handler_init(&flash->ctrls, 10); - - /* V4L2_CID_FLASH_LED_MODE */ - v4l2_ctrl_new_std_menu(&flash->ctrls, &as3645a_ctrl_ops, - V4L2_CID_FLASH_LED_MODE, 2, ~7, - V4L2_FLASH_LED_MODE_NONE); - - /* V4L2_CID_FLASH_STROBE_SOURCE */ - v4l2_ctrl_new_std_menu(&flash->ctrls, &as3645a_ctrl_ops, - V4L2_CID_FLASH_STROBE_SOURCE, - pdata->ext_strobe ? 1 : 0, - pdata->ext_strobe ? ~3 : ~1, - V4L2_FLASH_STROBE_SOURCE_SOFTWARE); - - flash->strobe_source = V4L2_FLASH_STROBE_SOURCE_SOFTWARE; - - /* V4L2_CID_FLASH_STROBE */ - v4l2_ctrl_new_std(&flash->ctrls, &as3645a_ctrl_ops, - V4L2_CID_FLASH_STROBE, 0, 0, 0, 0); - - /* V4L2_CID_FLASH_STROBE_STOP */ - v4l2_ctrl_new_std(&flash->ctrls, &as3645a_ctrl_ops, - V4L2_CID_FLASH_STROBE_STOP, 0, 0, 0, 0); - - /* V4L2_CID_FLASH_STROBE_STATUS */ - ctrl = v4l2_ctrl_new_std(&flash->ctrls, &as3645a_ctrl_ops, - V4L2_CID_FLASH_STROBE_STATUS, 0, 1, 1, 1); - if (ctrl != NULL) - ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; - - /* V4L2_CID_FLASH_TIMEOUT */ - maximum = pdata->timeout_max; - - v4l2_ctrl_new_std(&flash->ctrls, &as3645a_ctrl_ops, - V4L2_CID_FLASH_TIMEOUT, AS3645A_FLASH_TIMEOUT_MIN, - maximum, AS3645A_FLASH_TIMEOUT_STEP, maximum); - - flash->timeout = maximum; - - /* V4L2_CID_FLASH_INTENSITY */ - maximum = pdata->flash_max_current; - - v4l2_ctrl_new_std(&flash->ctrls, &as3645a_ctrl_ops, - V4L2_CID_FLASH_INTENSITY, AS3645A_FLASH_INTENSITY_MIN, - maximum, AS3645A_FLASH_INTENSITY_STEP, maximum); - - flash->flash_current = (maximum - AS3645A_FLASH_INTENSITY_MIN) - / AS3645A_FLASH_INTENSITY_STEP; - - /* V4L2_CID_FLASH_TORCH_INTENSITY */ - maximum = pdata->torch_max_current; - - v4l2_ctrl_new_std(&flash->ctrls, &as3645a_ctrl_ops, - V4L2_CID_FLASH_TORCH_INTENSITY, - AS3645A_TORCH_INTENSITY_MIN, maximum, - AS3645A_TORCH_INTENSITY_STEP, - AS3645A_TORCH_INTENSITY_MIN); - - flash->assist_current = 0; - - /* V4L2_CID_FLASH_INDICATOR_INTENSITY */ - v4l2_ctrl_new_std(&flash->ctrls, &as3645a_ctrl_ops, - V4L2_CID_FLASH_INDICATOR_INTENSITY, - AS3645A_INDICATOR_INTENSITY_MIN, - AS3645A_INDICATOR_INTENSITY_MAX, - AS3645A_INDICATOR_INTENSITY_STEP, - AS3645A_INDICATOR_INTENSITY_MIN); - - flash->indicator_current = 0; - - /* V4L2_CID_FLASH_FAULT */ - ctrl = v4l2_ctrl_new_std(&flash->ctrls, &as3645a_ctrl_ops, - V4L2_CID_FLASH_FAULT, 0, - V4L2_FLASH_FAULT_OVER_VOLTAGE | - V4L2_FLASH_FAULT_TIMEOUT | - V4L2_FLASH_FAULT_OVER_TEMPERATURE | - V4L2_FLASH_FAULT_SHORT_CIRCUIT, 0, 0); - if (ctrl != NULL) - ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; - - flash->subdev.ctrl_handler = &flash->ctrls; - - return flash->ctrls.error; -} - -static int as3645a_probe(struct i2c_client *client, - const struct i2c_device_id *devid) -{ - struct as3645a *flash; - int ret; - - if (client->dev.platform_data == NULL) - return -ENODEV; - - flash = devm_kzalloc(&client->dev, sizeof(*flash), GFP_KERNEL); - if (flash == NULL) - return -ENOMEM; - - flash->pdata = client->dev.platform_data; - - v4l2_i2c_subdev_init(&flash->subdev, client, &as3645a_ops); - flash->subdev.internal_ops = &as3645a_internal_ops; - flash->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; - - ret = as3645a_init_controls(flash); - if (ret < 0) - goto done; - - ret = media_entity_pads_init(&flash->subdev.entity, 0, NULL); - if (ret < 0) - goto done; - - flash->subdev.entity.function = MEDIA_ENT_F_FLASH; - - mutex_init(&flash->power_lock); - - flash->led_mode = V4L2_FLASH_LED_MODE_NONE; - -done: - if (ret < 0) - v4l2_ctrl_handler_free(&flash->ctrls); - - return ret; -} - -static int as3645a_remove(struct i2c_client *client) -{ - struct v4l2_subdev *subdev = i2c_get_clientdata(client); - struct as3645a *flash = to_as3645a(subdev); - - v4l2_device_unregister_subdev(subdev); - v4l2_ctrl_handler_free(&flash->ctrls); - media_entity_cleanup(&flash->subdev.entity); - mutex_destroy(&flash->power_lock); - - return 0; -} - -static const struct i2c_device_id as3645a_id_table[] = { - { AS3645A_NAME, 0 }, - { }, -}; -MODULE_DEVICE_TABLE(i2c, as3645a_id_table); - -static const struct dev_pm_ops as3645a_pm_ops = { - .suspend = as3645a_suspend, - .resume = as3645a_resume, -}; - -static struct i2c_driver as3645a_i2c_driver = { - .driver = { - .name = AS3645A_NAME, - .pm = &as3645a_pm_ops, - }, - .probe = as3645a_probe, - .remove = as3645a_remove, - .id_table = as3645a_id_table, -}; - -module_i2c_driver(as3645a_i2c_driver); - -MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>"); -MODULE_DESCRIPTION("LED flash driver for AS3645A, LM3555 and their clones"); -MODULE_LICENSE("GPL"); |