From patchwork Fri Feb 21 04:50:20 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Jeong X-Patchwork-Id: 3693651 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 9A29ABF13A for ; Fri, 21 Feb 2014 04:50:36 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 1DD5120179 for ; Fri, 21 Feb 2014 04:50:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 535B220145 for ; Fri, 21 Feb 2014 04:50:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752913AbaBUEub (ORCPT ); Thu, 20 Feb 2014 23:50:31 -0500 Received: from mail-pa0-f43.google.com ([209.85.220.43]:51623 "EHLO mail-pa0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752468AbaBUEua (ORCPT ); Thu, 20 Feb 2014 23:50:30 -0500 Received: by mail-pa0-f43.google.com with SMTP id rd3so2921415pab.16 for ; Thu, 20 Feb 2014 20:50:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id; bh=cJUCTnM+jD6uDpeW2ix9GFRSqR5xFlbVsp9xMgFILmY=; b=lgREwAntYC0I2sTkga/o7CUEmzQTmPnJBj+vLP8VgQ9DfrrrBv8K0fCFFWceUyDhPw tEHeg2Nr38Fry3oA8lpiAFVIITVoR7nfv4ORwy9Zsip2eemMY764n1QMM+FKmxdBUbn1 YK4HngAFaBtDMDurvB7wOnd8oIHobRk7v+FA/ccYTt6nS3Qww3/KVRYrYJT3OpAheed2 ulHKfHXa2UgGiQEPBnvBD3Gyp7mYdQWVv4a16erIzfmqR3Jti+uyLODvD1CunuCmj7TL 2StRuCwuyDdDi5JZVh+rXpgIm85CVgTJqu99tnuGSPwPT79UXL9zyN4Yy7yHCT6AKoir 7S6w== X-Received: by 10.68.134.8 with SMTP id pg8mr6899169pbb.84.1392958229754; Thu, 20 Feb 2014 20:50:29 -0800 (PST) Received: from localhost.localdomain ([211.36.141.239]) by mx.google.com with ESMTPSA id iq10sm16857443pbc.14.2014.02.20.20.50.26 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 20 Feb 2014 20:50:29 -0800 (PST) From: Daniel Jeong To: Mauro Carvalho Chehab , Sakari Ailus , Andy Shevchenko Cc: Hans Verkuil , Daniel Jeong , Subject: [RFC v5,3/3] media: i2c: add new dual LED Flash driver, lm3646 Date: Fri, 21 Feb 2014 13:50:20 +0900 Message-Id: <1392958220-4691-1-git-send-email-gshark.jeong@gmail.com> X-Mailer: git-send-email 1.7.9.5 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Spam-Status: No, score=-7.4 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP To prevent redundant i2c access, Mode register is caching at initial time. And it will be written with control mode. There are many bit data in mode register so it is hard to set zero all. DT is removed and will be created a seperated patch Signed-off-by: Daniel Jeong --- drivers/media/i2c/Kconfig | 9 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/lm3646.c | 419 ++++++++++++++++++++++++++++++++++++++++++++ include/media/lm3646.h | 87 +++++++++ 4 files changed, 516 insertions(+) create mode 100644 drivers/media/i2c/lm3646.c create mode 100644 include/media/lm3646.h diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index 4aa9c53..c7f2823 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -629,6 +629,15 @@ config VIDEO_LM3560 This is a driver for the lm3560 dual flash controllers. It controls flash, torch LEDs. +config VIDEO_LM3646 + tristate "LM3646 dual 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 lm3646 dual flash controllers. It controls + flash, torch LEDs. + comment "Video improvement chips" config VIDEO_UPD64031A diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index 48888ae..01b6bfc 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -72,6 +72,7 @@ obj-$(CONFIG_VIDEO_S5C73M3) += s5c73m3/ obj-$(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_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/lm3646.c b/drivers/media/i2c/lm3646.c new file mode 100644 index 0000000..97d79a7 --- /dev/null +++ b/drivers/media/i2c/lm3646.c @@ -0,0 +1,419 @@ +/* + * drivers/media/i2c/lm3646.c + * General device driver for TI lm3646, Dual FLASH LED Driver + * + * Copyright (C) 2014 Texas Instruments + * + * Contact: Daniel Jeong + * Ldd-Mlp + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include + +/* registers definitions */ +#define REG_ENABLE 0x01 +#define REG_TORCH_BR 0x05 +#define REG_FLASH_BR 0x05 +#define REG_FLASH_TOUT 0x04 +#define REG_FLAG 0x08 +#define REG_STROBE_SRC 0x06 +#define REG_LED1_FLASH_BR 0x06 +#define REG_LED1_TORCH_BR 0x07 + +#define MASK_ENABLE 0x03 +#define MASK_TORCH_BR 0x70 +#define MASK_FLASH_BR 0x0F +#define MASK_FLASH_TOUT 0x07 +#define MASK_FLAG 0xFF +#define MASK_STROBE_SRC 0x80 + +/* Fault Mask */ +#define FAULT_TIMEOUT (1<<0) +#define FAULT_SHORT_CIRCUIT (1<<1) +#define FAULT_UVLO (1<<2) +#define FAULT_IVFM (1<<3) +#define FAULT_OCP (1<<4) +#define FAULT_OVERTEMP (1<<5) +#define FAULT_NTC_TRIP (1<<6) +#define FAULT_OVP (1<<7) + +enum led_mode { + MODE_SHDN = 0x0, + MODE_TORCH = 0x2, + MODE_FLASH = 0x3, +}; + +/* + * struct lm3646_flash + * + * @pdata: platform data + * @regmap: reg. map for i2c + * @lock: muxtex for serial access. + * @led_mode: V4L2 LED mode + * @ctrls_led: V4L2 contols + * @subdev_led: V4L2 subdev + * @mode_reg : mode register value + */ +struct lm3646_flash { + struct device *dev; + struct lm3646_platform_data *pdata; + struct regmap *regmap; + + struct v4l2_ctrl_handler ctrls_led; + struct v4l2_subdev subdev_led; + + u8 mode_reg; +}; + +#define to_lm3646_flash(_ctrl) \ + container_of(_ctrl->handler, struct lm3646_flash, ctrls_led) + +/* enable mode control */ +static int lm3646_mode_ctrl(struct lm3646_flash *flash, + enum v4l2_flash_led_mode led_mode) +{ + int rval = -EINVAL; + + switch (led_mode) { + case V4L2_FLASH_LED_MODE_NONE: + rval = regmap_write(flash->regmap, + REG_ENABLE, flash->mode_reg | MODE_SHDN); + break; + case V4L2_FLASH_LED_MODE_TORCH: + rval = regmap_write(flash->regmap, + REG_ENABLE, flash->mode_reg | MODE_TORCH); + break; + case V4L2_FLASH_LED_MODE_FLASH: + rval = regmap_write(flash->regmap, + REG_ENABLE, flash->mode_reg | MODE_FLASH); + break; + } + return rval; +} + +/* V4L2 controls */ +static int lm3646_get_ctrl(struct v4l2_ctrl *ctrl) +{ + struct lm3646_flash *flash = to_lm3646_flash(ctrl); + int rval = -EINVAL; + + if (ctrl->id == V4L2_CID_FLASH_FAULT) { + s32 fault = 0; + unsigned int reg_val; + rval = regmap_read(flash->regmap, REG_FLAG, ®_val); + if (rval < 0) + return rval; + + if (reg_val & FAULT_TIMEOUT) + fault |= V4L2_FLASH_FAULT_TIMEOUT; + if (reg_val & FAULT_SHORT_CIRCUIT) + fault |= V4L2_FLASH_FAULT_SHORT_CIRCUIT; + if (reg_val & FAULT_UVLO) + fault |= V4L2_FLASH_FAULT_UNDER_VOLTAGE; + if (reg_val & FAULT_IVFM) + fault |= V4L2_FLASH_FAULT_INPUT_VOLTAGE; + if (reg_val & FAULT_OCP) + fault |= V4L2_FLASH_FAULT_OVER_CURRENT; + if (reg_val & FAULT_OVERTEMP) + fault |= V4L2_FLASH_FAULT_OVER_TEMPERATURE; + if (reg_val & FAULT_NTC_TRIP) + fault |= V4L2_FLASH_FAULT_LED_OVER_TEMPERATURE; + if (reg_val & FAULT_OVP) + fault |= V4L2_FLASH_FAULT_OVER_VOLTAGE; + + ctrl->val = fault; + } + + return rval; +} + +static int lm3646_set_ctrl(struct v4l2_ctrl *ctrl) +{ + struct lm3646_flash *flash = to_lm3646_flash(ctrl); + 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 lm3646_mode_ctrl(flash, ctrl->val); + /* switch to SHDN mode before flash strobe on */ + return lm3646_mode_ctrl(flash, V4L2_FLASH_LED_MODE_NONE); + + case V4L2_CID_FLASH_STROBE_SOURCE: + return regmap_update_bits(flash->regmap, + REG_STROBE_SRC, MASK_STROBE_SRC, + (ctrl->val) << 7); + + case V4L2_CID_FLASH_STROBE: + + /* read and check current mode of chip to start flash */ + rval = regmap_read(flash->regmap, REG_ENABLE, ®_val); + if (rval < 0 || ((reg_val & MASK_ENABLE) != MODE_SHDN)) + return rval; + /* flash on */ + return lm3646_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, REG_ENABLE, ®_val); + if (rval < 0) + return rval; + if ((reg_val & MASK_ENABLE) == MODE_FLASH) + return lm3646_mode_ctrl(flash, + V4L2_FLASH_LED_MODE_NONE); + return rval; + + case V4L2_CID_FLASH_TIMEOUT: + return regmap_update_bits(flash->regmap, + REG_FLASH_TOUT, MASK_FLASH_TOUT, + LM3646_FLASH_TOUT_ms_TO_REG + (ctrl->val)); + + case V4L2_CID_FLASH_INTENSITY: + return regmap_update_bits(flash->regmap, + REG_FLASH_BR, MASK_FLASH_BR, + LM3646_TOTAL_FLASH_BRT_uA_TO_REG + (ctrl->val)); + + case V4L2_CID_FLASH_TORCH_INTENSITY: + reg_val = LM3646_TOTAL_TORCH_BRT_uA_TO_REG(ctrl->val); + return regmap_update_bits(flash->regmap, + REG_TORCH_BR, MASK_TORCH_BR, + LM3646_TOTAL_TORCH_BRT_uA_TO_REG + (ctrl->val) << 4); + } + + return -EINVAL; +} + +static const struct v4l2_ctrl_ops lm3646_led_ctrl_ops = { + .g_volatile_ctrl = lm3646_get_ctrl, + .s_ctrl = lm3646_set_ctrl, +}; + +static int lm3646_init_controls(struct lm3646_flash *flash) +{ + struct v4l2_ctrl *fault; + struct v4l2_ctrl_handler *hdl = &flash->ctrls_led; + const struct v4l2_ctrl_ops *ops = &lm3646_led_ctrl_ops; + + 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, + LM3646_FLASH_TOUT_MIN, + LM3646_FLASH_TOUT_MAX, + LM3646_FLASH_TOUT_STEP, flash->pdata->flash_timeout); + + /* max flash current */ + v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FLASH_INTENSITY, + LM3646_TOTAL_FLASH_BRT_MIN, + LM3646_TOTAL_FLASH_BRT_MAX, + LM3646_TOTAL_FLASH_BRT_STEP, + LM3646_TOTAL_FLASH_BRT_MAX); + + /* max torch current */ + v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FLASH_TORCH_INTENSITY, + LM3646_TOTAL_TORCH_BRT_MIN, + LM3646_TOTAL_TORCH_BRT_MAX, + LM3646_TOTAL_TORCH_BRT_STEP, + LM3646_TOTAL_TORCH_BRT_MAX); + + /* fault */ + fault = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FLASH_FAULT, 0, + V4L2_FLASH_FAULT_OVER_VOLTAGE + | V4L2_FLASH_FAULT_OVER_TEMPERATURE + | V4L2_FLASH_FAULT_SHORT_CIRCUIT + | V4L2_FLASH_FAULT_TIMEOUT, 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 lm3646_ops = { + .core = NULL, +}; + +static const struct regmap_config lm3646_regmap = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0xFF, +}; + +static int lm3646_subdev_init(struct lm3646_flash *flash) +{ + struct i2c_client *client = to_i2c_client(flash->dev); + int rval; + + v4l2_i2c_subdev_init(&flash->subdev_led, client, &lm3646_ops); + flash->subdev_led.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + strcpy(flash->subdev_led.name, LM3646_NAME); + rval = lm3646_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 lm3646_init_device(struct lm3646_flash *flash) +{ + unsigned int reg_val; + int rval; + + /* read the value of mode register to reduce redundant i2c accesses */ + rval = regmap_read(flash->regmap, REG_ENABLE, ®_val); + if (rval < 0) + return rval; + flash->mode_reg = reg_val & 0xfc; + + /* output disable */ + rval = lm3646_mode_ctrl(flash, V4L2_FLASH_LED_MODE_NONE); + if (rval < 0) + return rval; + + /* + * LED1 flash current setting + * LED2 flash current = Total(Max) flash current - LED1 flash current + */ + rval = regmap_update_bits(flash->regmap, REG_LED1_FLASH_BR, 0x7F, + LM3646_LED1_FLASH_BRT_uA_TO_REG(flash->pdata-> + led1_flash_brt)); + if (rval < 0) + return rval; + + /* + * LED1 torch current setting + * LED2 torch current = Total(Max) torch current - LED1 torch current + */ + rval = regmap_update_bits(flash->regmap, REG_LED1_TORCH_BR, 0x7F, + LM3646_LED1_TORCH_BRT_uA_TO_REG(flash->pdata-> + led1_torch_brt)); + if (rval < 0) + return rval; + + /* Reset flag register */ + return regmap_read(flash->regmap, REG_FLAG, ®_val); + +} + +static int lm3646_probe(struct i2c_client *client, + const struct i2c_device_id *devid) +{ + struct lm3646_flash *flash; + struct lm3646_platform_data *pdata = dev_get_platdata(&client->dev); + int rval; + + flash = devm_kzalloc(&client->dev, sizeof(*flash), GFP_KERNEL); + if (flash == NULL) + return -ENOMEM; + + flash->regmap = devm_regmap_init_i2c(client, &lm3646_regmap); + if (IS_ERR(flash->regmap)) + return PTR_ERR(flash->regmap); + + /* check device tree if there is no platform data */ + if (pdata == NULL) { + pdata = devm_kzalloc(&client->dev, + sizeof(struct lm3646_platform_data), + GFP_KERNEL); + if (pdata == NULL) + return -ENOMEM; + /* use default data in case of no platform data */ + pdata->flash_timeout = LM3646_FLASH_TOUT_MAX; + pdata->led1_torch_brt = LM3646_LED1_TORCH_BRT_MAX; + pdata->led1_flash_brt = LM3646_LED1_FLASH_BRT_MAX; + } + flash->pdata = pdata; + flash->dev = &client->dev; + + rval = lm3646_subdev_init(flash); + if (rval < 0) + return rval; + + rval = lm3646_init_device(flash); + if (rval < 0) + return rval; + + i2c_set_clientdata(client, flash); + + return 0; +} + +static int lm3646_remove(struct i2c_client *client) +{ + struct lm3646_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 lm3646_id_table[] = { + {LM3646_NAME, 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, lm3646_id_table); + +static struct i2c_driver lm3646_i2c_driver = { + .driver = { + .name = LM3646_NAME, + }, + .probe = lm3646_probe, + .remove = lm3646_remove, + .id_table = lm3646_id_table, +}; + +module_i2c_driver(lm3646_i2c_driver); + +MODULE_AUTHOR("Daniel Jeong "); +MODULE_AUTHOR("Ldd Mlp "); +MODULE_DESCRIPTION("Texas Instruments LM3646 Dual Flash LED driver"); +MODULE_LICENSE("GPL"); diff --git a/include/media/lm3646.h b/include/media/lm3646.h new file mode 100644 index 0000000..c6acf5a --- /dev/null +++ b/include/media/lm3646.h @@ -0,0 +1,87 @@ +/* + * include/media/lm3646.h + * + * Copyright (C) 2014 Texas Instruments + * + * Contact: Daniel Jeong + * Ldd-Mlp + * + * 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 __LM3646_H__ +#define __LM3646_H__ + +#include + +#define LM3646_NAME "lm3646" +#define LM3646_I2C_ADDR_REV1 (0x67) +#define LM3646_I2C_ADDR_REV0 (0x63) + +/* TOTAL FLASH Brightness Max + * min 93350uA, step 93750uA, max 1499600uA + */ +#define LM3646_TOTAL_FLASH_BRT_MIN 93350 +#define LM3646_TOTAL_FLASH_BRT_STEP 93750 +#define LM3646_TOTAL_FLASH_BRT_MAX 1499600 +#define LM3646_TOTAL_FLASH_BRT_uA_TO_REG(a) \ + ((a) < LM3646_TOTAL_FLASH_BRT_MIN ? 0 : \ + ((((a) - LM3646_TOTAL_FLASH_BRT_MIN) / LM3646_TOTAL_FLASH_BRT_STEP))) + +/* TOTAL TORCH Brightness Max + * min 23040uA, step 23430uA, max 187100uA + */ +#define LM3646_TOTAL_TORCH_BRT_MIN 23040 +#define LM3646_TOTAL_TORCH_BRT_STEP 23430 +#define LM3646_TOTAL_TORCH_BRT_MAX 187100 +#define LM3646_TOTAL_TORCH_BRT_uA_TO_REG(a) \ + ((a) < LM3646_TOTAL_TORCH_BRT_MIN ? 0 : \ + ((((a) - LM3646_TOTAL_TORCH_BRT_MIN) / LM3646_TOTAL_TORCH_BRT_STEP))) + +/* LED1 FLASH Brightness + * min 23040uA, step 11718uA, max 1499600uA + */ +#define LM3646_LED1_FLASH_BRT_MIN 23040 +#define LM3646_LED1_FLASH_BRT_STEP 11718 +#define LM3646_LED1_FLASH_BRT_MAX 1499600 +#define LM3646_LED1_FLASH_BRT_uA_TO_REG(a) \ + ((a) <= LM3646_LED1_FLASH_BRT_MIN ? 0 : \ + ((((a) - LM3646_LED1_FLASH_BRT_MIN) / LM3646_LED1_FLASH_BRT_STEP))+1) + +/* LED1 TORCH Brightness + * min 2530uA, step 1460uA, max 187100uA + */ +#define LM3646_LED1_TORCH_BRT_MIN 2530 +#define LM3646_LED1_TORCH_BRT_STEP 1460 +#define LM3646_LED1_TORCH_BRT_MAX 187100 +#define LM3646_LED1_TORCH_BRT_uA_TO_REG(a) \ + ((a) <= LM3646_LED1_TORCH_BRT_MIN ? 0 : \ + ((((a) - LM3646_LED1_TORCH_BRT_MIN) / LM3646_LED1_TORCH_BRT_STEP))+1) + +/* FLASH TIMEOUT DURATION + * min 50ms, step 50ms, max 400ms + */ +#define LM3646_FLASH_TOUT_MIN 50 +#define LM3646_FLASH_TOUT_STEP 50 +#define LM3646_FLASH_TOUT_MAX 400 +#define LM3646_FLASH_TOUT_ms_TO_REG(a) \ + ((a) <= LM3646_FLASH_TOUT_MIN ? 0 : \ + (((a) - LM3646_FLASH_TOUT_MIN) / LM3646_FLASH_TOUT_STEP)) + +/* struct lm3646_platform_data + * + * @flash_timeout: flash timeout + * @led1_flash_brt: led1 flash mode brightness, uA + * @led1_torch_brt: led1 torch mode brightness, uA + */ +struct lm3646_platform_data { + + u32 flash_timeout; + + u32 led1_flash_brt; + u32 led1_torch_brt; +}; + +#endif /* __LM3646_H__ */