Signed-off-by: Daniel Jeong <gshark.jeong@xxxxxxxxx>
---
drivers/media/i2c/Kconfig | 9 +
drivers/media/i2c/Makefile | 1 +
drivers/media/i2c/ti-ss-flash.c | 744 +++++++++++++++++++++++++++++++++++++++
include/media/ti-ss-flash.h | 33 ++
4 files changed, 787 insertions(+)
create mode 100644 drivers/media/i2c/ti-ss-flash.c
create mode 100644 include/media/ti-ss-flash.h
diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index 205d713..886c1fb 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -638,6 +638,15 @@ config VIDEO_LM3646
This is a driver for the lm3646 dual flash controllers. It controls
flash, torch LEDs.
+config VIDEO_TI_SS_FLASH
+ tristate "TI Single String Flash driver support"
+ depends on I2C && VIDEO_V4L2 && MEDIA_CONTROLLER
+ depends on MEDIA_CAMERA_SUPPORT
+ select REGMAP_I2C
+ ---help---
+ This is a driver for the signle string flash controllers of TI.
+ It supports LM3556, LM3561, LM3642 and LM3648.
+
comment "Video improvement chips"
config VIDEO_UPD64031A
diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
index 98589001..0e523ec 100644
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -73,6 +73,7 @@ obj-$(CONFIG_VIDEO_ADP1653) += adp1653.o
obj-$(CONFIG_VIDEO_AS3645A) += as3645a.o
obj-$(CONFIG_VIDEO_LM3560) += lm3560.o
obj-$(CONFIG_VIDEO_LM3646) += lm3646.o
+obj-$(CONFIG_VIDEO_TI_SS_FLASH) += ti-ss-flash.o
obj-$(CONFIG_VIDEO_SMIAPP_PLL) += smiapp-pll.o
obj-$(CONFIG_VIDEO_AK881X) += ak881x.o
obj-$(CONFIG_VIDEO_IR_I2C) += ir-kbd-i2c.o
diff --git a/drivers/media/i2c/ti-ss-flash.c b/drivers/media/i2c/ti-ss-flash.c
new file mode 100644
index 0000000..035aeba
--- /dev/null
+++ b/drivers/media/i2c/ti-ss-flash.c
@@ -0,0 +1,744 @@
+/*
+ * drivers/media/i2c/ti-ss-flash.c
+ * General device driver for Single String FLASH LED Drivers of TI
+ * It covers lm3556, lm3561, lm3642 and lm3648.
+ *
+ * Copyright (C) 2015 Texas Instruments
+ *
+ * Contact: Daniel Jeong <gshark.jeong@xxxxxxxxx>
+ * Ldd-Mlp <ldd-mlp@xxxxxxxxxxx>
+ *
+ * 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.
+ *
+ */
+
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/videodev2.h>
+#include <media/ti-ss-flash.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+
+/* operation mode */
+enum led_opmode {
+ OPMODE_SHDN = 0x0,
+ OPMODE_INDI_IR,
+ OPMODE_TORCH,
+ OPMODE_FLASH,
+};
+
+/*
+ * register data
+ * @reg : register
+ * @mask : mask bits
+ * @shift : bit shift of data
+ */
+struct ctrl_reg {
+ unsigned int reg;
+ unsigned int mask;
+ unsigned int shift;
+};
+
+/*
+ * unit data
+ * @min : min value of brightness or timeout
+ * brightness : uA
+ * timeout : ms
+ * @step : step value of brightness or timeout
+ * brightness : uA
+ * timeout : ms
+ * @knee: knee point of step of brightness/timeout
+ * brightness : uA
+ * timeout : ms
+ * @knee_step : step value of brightness or timeout after knee point
+ * brightness : uA
+ * timeout : ms
+ * @max : max value of brightness or timeout
+ * brightness : uA
+ * timeout : ms
+ * @ctrl : register info to control brightness or timeout
+ */
+struct ssflash_config {
+ unsigned int min;
+ unsigned int step;
+ unsigned int knee;
+ unsigned int knee_step;
+ unsigned int max;
+ struct ctrl_reg ctrl;
+};
+
+/*
+ * @reg : fault register
+ * @mask : fault mask bit
+ * @v4l2_fault : bit mapping to V4L2_FLASH_FAULT_
+ * refer to include//uapi/linux/v4l2-controls.h
+ */
+struct ssflash_fault {
+ unsigned int reg;
+ unsigned int mask;
+ unsigned int v4l2_fault;
+};
+
+#define NUM_V4L2_FAULT 9
+
+/*
+ * ssflash data
+ * @name: device name
+ * @mode: operation mode control data
+ * @flash_br: flash brightness register and bit data
+ * @timeout: timeout control data
+ * @strobe: strobe control data
+ * @torch_br: torch brightness register and bit data
+ * @fault: fault data
+ * @func: initialize function
+ */
+struct ssflash_data {
+ char *name;
+ struct ctrl_reg mode;
+ struct ssflash_config flash_br;
+ struct ssflash_config timeout;
+ struct ctrl_reg strobe;
+
+ struct ssflash_config torch_br;
+ struct ssflash_fault fault[NUM_V4L2_FAULT];
+
+ int (*func)(struct regmap *regmap);
+};
+
+/*
+ * struct ssflash_flash
+ * @dev: device
+ * @regmap: reg map for interface
+ * @ctrls_led: V4L2 contols
+ * @subdev_led: V4L2 subdev
+ * @data : chip control data
+ * @mode_reg: value of mode register
+ */
+struct ssflash_flash {
+ struct device *dev;
+ struct regmap *regmap;
+
+ struct v4l2_ctrl_handler ctrls_led;
+ struct v4l2_subdev subdev_led;
+ const struct ssflash_data *data;
+ u8 mode_reg;
+};
+
+#define to_ssflash_flash(_ctrl) \
+ container_of(_ctrl->handler, struct ssflash_flash, ctrls_led)
+
+static const struct ssflash_data flash_lm3556 = {
+ .name = LM3556_NAME,
+ .mode = {
+ .reg = 0x0a, .mask = 0x03, .shift = 0
+ },
+ .flash_br = {
+ .min = 93750, .step = 93750,
+ .max = 1500000,
+ .ctrl = {
+ .reg = 0x09, .mask = 0xf, .shift = 0
+ },
+ },
+ .timeout = {
+ .min = 100, .step = 100,
+ .max = 800,
+ .ctrl = {
+ .reg = 0x08, .mask = 0x07, .shift = 0
+ }
+ },
+ .torch_br = {
+ .min = 46880, .step = 46880,
+ .max = 375000,
+ .ctrl = {
+ .reg = 0x09, .mask = 0x70, .shift = 4
+ }
+ },
+ .strobe = {
+ .reg = 0x0a, .mask = 0x20, .shift = 5
+ },
+ .fault = {
+ [0] = {
+ .reg = 0x0b, .mask = 0x01,
+ .v4l2_fault = V4L2_FLASH_FAULT_TIMEOUT,
+ },
+ [1] = {
+ .reg = 0x0b, .mask = 0x02,
+ .v4l2_fault = V4L2_FLASH_FAULT_OVER_TEMPERATURE,
+ },
+ [2] = {
+ .reg = 0x0b, .mask = 0x04,
+ .v4l2_fault = V4L2_FLASH_FAULT_SHORT_CIRCUIT,
+ },
+ [3] = {
+ .reg = 0x0b, .mask = 0x08,
+ .v4l2_fault = V4L2_FLASH_FAULT_OVER_VOLTAGE,
+ },
+
+ [4] = {
+ .reg = 0x0b, .mask = 0x10,
+ .v4l2_fault = V4L2_FLASH_FAULT_UNDER_VOLTAGE,
+ },
+ [5] = {
+ .reg = 0x0b, .mask = 0x20,
+ .v4l2_fault = V4L2_FLASH_FAULT_INPUT_VOLTAGE,
+ },
+ },
+ .func = NULL
+};
+
+static const struct ssflash_data flash_lm3561 = {
+ .name = LM3561_NAME,
+ .mode = {
+ .reg = 0x10, .mask = 0x03, .shift = 0
+ },
+ .flash_br = {
+ .min = 36000, .step = 37600,
+ .max = 600000,
+ .ctrl = {
+ .reg = 0xb0, .mask = 0xf, .shift = 0
+ },
+ },
+ .timeout = {
+ .min = 32, .step = 32,
+ .max = 1024,
+ .ctrl = {
+ .reg = 0xc0, .mask = 0x1f, .shift = 0
+ }
+ },
+ .torch_br = {
+ .min = 18000, .step = 18800,
+ .max = 149600,
+ .ctrl = {
+ .reg = 0xa0, .mask = 0x07, .shift = 0
+ }
+ },
+ .strobe = {
+ .reg = 0xe0, .mask = 0x04, .shift = 2
+ },
+ .fault = {
+ [0] = {
+ .reg = 0xd0, .mask = 0x01,
+ .v4l2_fault = V4L2_FLASH_FAULT_TIMEOUT,
+ },
+ [1] = {
+ .reg = 0xd0, .mask = 0x02,
+ .v4l2_fault = V4L2_FLASH_FAULT_OVER_TEMPERATURE,
+ },
+ [2] = {
+ .reg = 0xd0, .mask = 0x04,
+ .v4l2_fault = V4L2_FLASH_FAULT_SHORT_CIRCUIT,
+ },
+ [3] = {
+ .reg = 0xd0, .mask = 0x20,
+ .v4l2_fault = V4L2_FLASH_FAULT_LED_OVER_TEMPERATURE,
+ },
+ [4] = {
+ .reg = 0xd0, .mask = 0x80,
+ .v4l2_fault = V4L2_FLASH_FAULT_INPUT_VOLTAGE,
+ },
+ },
+ .func = NULL
+};
+
+static const struct ssflash_data flash_lm3642 = {
+ .name = LM3642_NAME,
+ .mode = {
+ .reg = 0x0a, .mask = 0x03, .shift = 0
+ },
+ .flash_br = {
+ .min = 93750, .step = 93750,
+ .max = 1500000,
+ .ctrl = {
+ .reg = 0x09, .mask = 0xf, .shift = 0
+ },
+ },
+ .timeout = {
+ .min = 100, .step = 100,
+ .max = 800,
+ .ctrl = {
+ .reg = 0x08, .mask = 0x07, .shift = 0
+ }
+ },
+ .torch_br = {
+ .min = 46880, .step = 46880,
+ .max = 375000,
+ .ctrl = {
+ .reg = 0x09, .mask = 0x70, .shift = 4
+ }
+ },
+ .strobe = {
+ .reg = 0x0a, .mask = 0x20, .shift = 5
+ },
+ .fault = {
+ [0] = {
+ .reg = 0x0b, .mask = 0x01,
+ .v4l2_fault = V4L2_FLASH_FAULT_TIMEOUT,
+ },
+ [1] = {
+ .reg = 0x0b, .mask = 0x02,
+ .v4l2_fault = V4L2_FLASH_FAULT_OVER_TEMPERATURE,
+ },
+ [2] = {
+ .reg = 0x0b, .mask = 0x04,
+ .v4l2_fault = V4L2_FLASH_FAULT_SHORT_CIRCUIT,
+ },
+ [3] = {
+ .reg = 0x0b, .mask = 0x20,
+ .v4l2_fault = V4L2_FLASH_FAULT_INPUT_VOLTAGE,
+ },
+ },
+ .func = NULL
+};
+
+static int ssflash_lm3648_init(struct regmap *regmap)
+{
+ int rval;
+
+ /* enable LED */
+ rval = regmap_update_bits(regmap, 0x01, 0x03, 0x03);
+ /* bit[7:6] must be set to 10b for proper operation */
+ rval |= regmap_update_bits(regmap, 0x03, 0xc0, 0x80);
+ /* bit[7] must be set to 1b for proper operation */
+ rval |= regmap_update_bits(regmap, 0x05, 0x80, 0x80);
+ if (rval < 0)
+ return rval;
+ return 0;
+}
+
+static const struct ssflash_data flash_lm3648 = {
+ .name = LM3648_NAME,
+ .mode = {
+ .reg = 0x01, .mask = 0x0c, .shift = 2
+ },
+ .flash_br = {
+ .min = 21800, .step = 23450,
+ .max = 1500000,
+ .ctrl = {
+ .reg = 0x03, .mask = 0x3f, .shift = 0
+ },
+ },
+ .timeout = {
+ .min = 10, .step = 10,
+ .knee = 100, .knee_step = 50,
+ .max = 1024,
+ .ctrl = {
+ .reg = 0x08, .mask = 0x0f, .shift = 0
+ }
+ },
+ .torch_br = {
+ .min = 1954, .step = 2800,
+ .max = 357600,
+ .ctrl = {
+ .reg = 0x5, .mask = 0x7f, .shift = 0
+ }
+ },
+ .strobe = {
+ .reg = 0x1, .mask = 0x20, .shift = 5
+ },
+ .fault = {
+ [0] = {
+ .reg = 0x0a, .mask = 0x01,
+ .v4l2_fault = V4L2_FLASH_FAULT_TIMEOUT,
+ },
+ [1] = {
+ .reg = 0x0a, .mask = 0x04,
+ .v4l2_fault = V4L2_FLASH_FAULT_OVER_TEMPERATURE,
+ },
+ [2] = {
+ .reg = 0x0a, .mask = 0x70,
+ .v4l2_fault = V4L2_FLASH_FAULT_SHORT_CIRCUIT,
+ },
+ [3] = {
+ .reg = 0x0b, .mask = 0x04,
+ .v4l2_fault = V4L2_FLASH_FAULT_INPUT_VOLTAGE,
+ },
+ [4] = {
+ .reg = 0x0b, .mask = 0x01,
+ .v4l2_fault = V4L2_FLASH_FAULT_LED_OVER_TEMPERATURE,
+ },
+ },
+ .func = ssflash_lm3648_init
+};
+
+static u8 ssflash_conv_val_to_reg(unsigned int val,
+ unsigned int min, unsigned int step,
+ unsigned int knee, unsigned int knee_step,
+ unsigned int max)
+{
+ if (val >= max)
+ return 0xff;
+
+ if (knee <= min)
+ return (u8)(val < min ? 0 : (val - min)/step);
+ return (u8)val < min ? 0 :
+ (val < knee ? (val-min)/step :
+ (val-knee)/knee_step + (knee-min)/step);
+}
+
+/* mode control */
+static int ssflash_mode_ctrl(struct ssflash_flash *flash,
+ enum v4l2_flash_led_mode v4l_led_mode)
+{
+ const struct ssflash_data *data = flash->data;
+ enum led_opmode opmode;
+
+ switch (v4l_led_mode) {
+ case V4L2_FLASH_LED_MODE_NONE:
+ opmode = OPMODE_SHDN;
+ break;
+ case V4L2_FLASH_LED_MODE_TORCH:
+ opmode = OPMODE_TORCH;
+ break;
+ case V4L2_FLASH_LED_MODE_FLASH:
+ opmode = OPMODE_FLASH;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return regmap_update_bits(flash->regmap, data->mode.reg,
+ data->mode.mask, opmode << data->mode.shift);
+}
+
+/* torch brightness control */
+static int ssflash_torch_brt_ctrl
+ (struct ssflash_flash *flash, unsigned int brt)
+{
+ const struct ssflash_data *data = flash->data;
+ int rval;
+ u8 br_bits;
+
+ br_bits = ssflash_conv_val_to_reg(brt,
+ data->torch_br.min, data->torch_br.step,
+ data->torch_br.knee, data->torch_br.knee_step,
+ data->torch_br.max);
+
+ rval = regmap_update_bits(flash->regmap,
+ data->torch_br.ctrl.reg,
+ data->torch_br.ctrl.mask,
+ br_bits << data->torch_br.ctrl.shift);
+
+ return rval;
+}
+
+/* flash brightness control */
+static int ssflash_flash_brt_ctrl(struct ssflash_flash *flash,
+ unsigned int brt)
+{
+ const struct ssflash_data *data = flash->data;
+ int rval;
+ u8 br_bits;
+
+ br_bits = ssflash_conv_val_to_reg(brt,
+ data->flash_br.min,
+ data->flash_br.step,
+ data->flash_br.knee,
+ data->flash_br.knee_step,
+ data->flash_br.max);
+
+ rval = regmap_update_bits(flash->regmap,
+ data->flash_br.ctrl.reg,
+ data->flash_br.ctrl.mask,
+ br_bits << data->flash_br.ctrl.shift);
+
+ return rval;
+}
+
+/* fault status */
+static int ssflash_get_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct ssflash_flash *flash = to_ssflash_flash(ctrl);
+ const struct ssflash_data *data = flash->data;
+ int rval = -EINVAL;
+
+ if (ctrl->id == V4L2_CID_FLASH_FAULT) {
+ int icnt;
+ s32 fault = 0;
+ unsigned int reg_val;
+ unsigned int reg = 0xfff;
+
+ for (icnt = 0; icnt < NUM_V4L2_FAULT; icnt++) {
+ if (data->fault[icnt].mask == 0x0)
+ continue;
+ if (data->fault[icnt].reg != reg) {
+ reg = data->fault[icnt].reg;
+ rval = regmap_read(
+ flash->regmap, reg, ®_val);
+ if (rval < 0)
+ goto out;
+ }
+ if (rval & data->fault[icnt].mask)
+ fault |= data->fault[icnt].v4l2_fault;
+ }
+ ctrl->cur.val = fault;
+ }
+
+out:
+ return rval;
+}
+
+static int ssflash_set_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct ssflash_flash *flash = to_ssflash_flash(ctrl);
+ const struct ssflash_data *data = flash->data;
+ u8 tout_bits;
+ unsigned int reg_val;
+ int rval = -EINVAL;
+
+ switch (ctrl->id) {
+ case V4L2_CID_FLASH_LED_MODE:
+ if (ctrl->val != V4L2_FLASH_LED_MODE_FLASH)
+ return ssflash_mode_ctrl(flash, ctrl->val);
+ /* switch to SHDN mode before flash strobe on */
+ return ssflash_mode_ctrl(flash, V4L2_FLASH_LED_MODE_NONE);
+
+ case V4L2_CID_FLASH_TORCH_INTENSITY:
+ return ssflash_torch_brt_ctrl(flash, ctrl->val);
+
+ case V4L2_CID_FLASH_INTENSITY:
+ return ssflash_flash_brt_ctrl(flash, ctrl->val);
+
+ case V4L2_CID_FLASH_STROBE_SOURCE:
+ return regmap_update_bits(flash->regmap,
+ data->strobe.reg, data->strobe.mask,
+ (ctrl->val) << data->strobe.shift);
+
+ case V4L2_CID_FLASH_STROBE:
+ /* read and check current mode of chip to start flash */
+ rval = regmap_read(flash->regmap, data->mode.reg, ®_val);
+ if (rval < 0 ||
+ (((reg_val & data->mode.mask)>>data->mode.shift)
+ != OPMODE_SHDN))
+ return rval;
+ /* flash on */
+ return ssflash_mode_ctrl(flash,
+ V4L2_FLASH_LED_MODE_FLASH);
+
+ case V4L2_CID_FLASH_STROBE_STOP:
+ /*
+ * flash mode will be turned automatically
+ * from FLASH mode to SHDN mode after flash duration timeout
+ * read and check current mode of chip to stop flash
+ */
+ rval = regmap_read(flash->regmap, data->mode.reg, ®_val);
+ if (rval < 0)
+ return rval;
+ if (((reg_val & data->mode.mask)
+ >> data->mode.shift) == OPMODE_FLASH)
+ return ssflash_mode_ctrl(flash,
+ V4L2_FLASH_LED_MODE_NONE);
+ return rval;
+
+ case V4L2_CID_FLASH_TIMEOUT:
+ tout_bits = ssflash_conv_val_to_reg(ctrl->val,
+ data->timeout.min,
+ data->timeout.step,
+ data->timeout.knee,
+ data->timeout.knee_step,
+ data->timeout.max);
+
+ return regmap_update_bits(flash->regmap,
+ data->timeout.ctrl.reg,
+ data->timeout.ctrl.mask,
+ tout_bits << data->timeout.ctrl.shift);
+ }
+
+ return rval;
+}
+
+static int ssflash_led_get_ctrl(struct v4l2_ctrl *ctrl)
+{
+ return ssflash_get_ctrl(ctrl);
+}
+
+static int ssflash_led_set_ctrl(struct v4l2_ctrl *ctrl)
+{
+ return ssflash_set_ctrl(ctrl);
+}
+
+static const struct v4l2_ctrl_ops ssflash_led_ctrl_ops = {
+ .g_volatile_ctrl = ssflash_led_get_ctrl,
+ .s_ctrl = ssflash_led_set_ctrl,
+};
+
+static int ssflash_init_controls(struct ssflash_flash *flash)
+{
+ struct v4l2_ctrl *fault;
+ struct v4l2_ctrl_handler *hdl = &flash->ctrls_led;
+ const struct v4l2_ctrl_ops *ops = &ssflash_led_ctrl_ops;
+ const struct ssflash_data *data = flash->data;
+ s64 fault_max = 0;
+ int icnt;
+
+ v4l2_ctrl_handler_init(hdl, 8);
+ /* flash mode */
+ v4l2_ctrl_new_std_menu(hdl, ops, V4L2_CID_FLASH_LED_MODE,
+ V4L2_FLASH_LED_MODE_TORCH, ~0x7,
+ V4L2_FLASH_LED_MODE_NONE);
+ /* flash source */
+ v4l2_ctrl_new_std_menu(hdl, ops, V4L2_CID_FLASH_STROBE_SOURCE,
+ 0x1, ~0x3, V4L2_FLASH_STROBE_SOURCE_SOFTWARE);
+ /* flash strobe */
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FLASH_STROBE, 0, 0, 0, 0);
+ /* flash strobe stop */
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FLASH_STROBE_STOP, 0, 0, 0, 0);
+ /* flash strobe timeout */
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FLASH_TIMEOUT,
+ data->timeout.min,
+ data->timeout.max,
+ data->timeout.step,
+ data->timeout.max);
+ /* flash brt */
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FLASH_INTENSITY,
+ data->flash_br.min,
+ data->flash_br.max,
+ data->flash_br.step,
+ data->flash_br.max);
+ /* torch brt */
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FLASH_TORCH_INTENSITY,
+ data->torch_br.min,
+ data->torch_br.max,
+ data->torch_br.step,
+ data->torch_br.max);
+ /* fault */
+ for (icnt = 0; icnt < NUM_V4L2_FAULT; icnt++)
+ fault_max |= data->fault[icnt].v4l2_fault;
+ fault = v4l2_ctrl_new_std(hdl,
+ ops, V4L2_CID_FLASH_FAULT, 0, fault_max, 0, 0);
+ if (fault != NULL)
+ fault->flags |= V4L2_CTRL_FLAG_VOLATILE;
+
+ if (hdl->error)
+ return hdl->error;
+
+ flash->subdev_led.ctrl_handler = hdl;
+ return 0;
+}
+
+/* initialize device */
+static const struct v4l2_subdev_ops ssflash_ops = {
+ .core = NULL,
+};
+
+static const struct regmap_config ssflash_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0xff,
+};
+
+static int ssflash_subdev_init(struct ssflash_flash *flash)
+{
+ struct i2c_client *client = to_i2c_client(flash->dev);
+ int rval;
+
+ v4l2_i2c_subdev_init(&flash->subdev_led, client, &ssflash_ops);
+ flash->subdev_led.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+ strcpy(flash->subdev_led.name, flash->data->name);
+
+ rval = ssflash_init_controls(flash);
+ if (rval)
+ goto err_out;
+
+ rval = media_entity_init(&flash->subdev_led.entity, 0, NULL, 0);
+ if (rval < 0)
+ goto err_out;
+
+ flash->subdev_led.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_FLASH;
+ return rval;
+
+err_out:
+ v4l2_ctrl_handler_free(&flash->ctrls_led);
+ return rval;
+}
+
+static int ssflash_init_device(struct ssflash_flash *flash)
+{
+ int rval;
+
+ /* output disable */
+ rval = ssflash_mode_ctrl(flash, V4L2_FLASH_LED_MODE_NONE);
+ if (rval < 0)
+ return rval;
+
+ if (flash->data->func != NULL) {
+ rval = flash->data->func(flash->regmap);
+ if (rval < 0)
+ return rval;
+ }
+
+ return rval;
+}
+
+static int ssflash_probe(struct i2c_client *client,
+ const struct i2c_device_id *devid)
+{
+ struct ssflash_flash *flash;
+ int rval;
+
+ flash = devm_kzalloc(&client->dev, sizeof(*flash), GFP_KERNEL);
+ if (flash == NULL)
+ return -ENOMEM;
+
+ flash->regmap = devm_regmap_init_i2c(client, &ssflash_regmap);
+ if (IS_ERR(flash->regmap)) {
+ rval = PTR_ERR(flash->regmap);
+ return rval;
+ }
+
+ flash->dev = &client->dev;
+ flash->data = (const struct ssflash_data *)devid->driver_data;
+
+ rval = ssflash_subdev_init(flash);
+ if (rval < 0)
+ return rval;
+
+ rval = ssflash_init_device(flash);
+ if (rval < 0)
+ return rval;
+
+ i2c_set_clientdata(client, flash);
+
+ return 0;
+}
+
+static int ssflash_remove(struct i2c_client *client)
+{
+ struct ssflash_flash *flash = i2c_get_clientdata(client);
+
+ v4l2_device_unregister_subdev(&flash->subdev_led);
+ v4l2_ctrl_handler_free(&flash->ctrls_led);
+ media_entity_cleanup(&flash->subdev_led.entity);
+
+ return 0;
+}
+
+static const struct i2c_device_id ssflash_id_table[] = {
+ {LM3556_NAME, (unsigned long)&flash_lm3556},
+ {LM3561_NAME, (unsigned long)&flash_lm3561},
+ {LM3642_NAME, (unsigned long)&flash_lm3642},
+ {LM3648_NAME, (unsigned long)&flash_lm3648},
+ {}
+};
+
+MODULE_DEVICE_TABLE(i2c, ssflash_id_table);
+
+static struct i2c_driver ssflash_i2c_driver = {
+ .driver = {
+ .name = SINGLE_STRING_FLASH_NAME,
+ },
+ .probe = ssflash_probe,
+ .remove = ssflash_remove,
+ .id_table = ssflash_id_table,
+};
+
+module_i2c_driver(ssflash_i2c_driver);
+
+MODULE_AUTHOR("Daniel Jeong <gshark.jeong@xxxxxxxxx>");
+MODULE_AUTHOR("Ldd Mlp <ldd-mlp@xxxxxxxxxxx>");
+MODULE_DESCRIPTION("Texas Instruments single string LED flash driver");
+MODULE_LICENSE("GPL");
diff --git a/include/media/ti-ss-flash.h b/include/media/ti-ss-flash.h
new file mode 100644
index 0000000..505b33f
--- /dev/null
+++ b/include/media/ti-ss-flash.h
@@ -0,0 +1,33 @@
+/*
+ * include/media/ti-ss-flash.h
+ *
+ * Copyright (C) 2014 Texas Instruments
+ *
+ * Contact: Daniel Jeong <gshark.jeong@xxxxxxxxx>
+ * Ldd-Mlp <ldd-mlp@xxxxxxxxxxx>
+ *
+ * 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.
+ */
+
+#ifndef __TI_SS_FLASH_H__
+#define __TI_SS_FLASH_H__
+
+#include <media/v4l2-subdev.h>
+
+#define LM3556_NAME "lm3556"
+#define LM3556_I2C_ADDR (0x63)
+
+#define LM3561_NAME "lm3561"
+#define LM3561_I2C_ADDR (0x53)
+
+#define LM3642_NAME "lm3642"
+#define LM3642_I2C_ADDR (0x63)
+
+#define LM3648_NAME "lm3648"
+#define LM3648_I2C_ADDR (0x63)
+
+#define SINGLE_STRING_FLASH_NAME "ti_ss_flash"
+
+#endif /* __TI_SS_FLASH_H__ */
