From patchwork Fri Feb 14 09:46:30 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Jeong X-Patchwork-Id: 3651571 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id A587C9F334 for ; Fri, 14 Feb 2014 09:46:55 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 221A32021C for ; Fri, 14 Feb 2014 09:46:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 579CE2021B for ; Fri, 14 Feb 2014 09:46:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751277AbaBNJqt (ORCPT ); Fri, 14 Feb 2014 04:46:49 -0500 Received: from mail-pd0-f180.google.com ([209.85.192.180]:33589 "EHLO mail-pd0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750932AbaBNJqq (ORCPT ); Fri, 14 Feb 2014 04:46:46 -0500 Received: by mail-pd0-f180.google.com with SMTP id x10so11801818pdj.11 for ; Fri, 14 Feb 2014 01:46:45 -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=TA976BOwIKHldmikHwpbD0KLxeygAWR1LN8LnxLobFE=; b=gAjM9cfctVlF3ZQGtFZ36KKa5zhO5/Fjif7FqJuaJYXQxlBvvsAlyQzBENnP3+L+Sb i3lqYIPKCmp8s3t+3jCwih+X/suexfmIPQa81OkbSUghMBTnwJacIFmweWWATP5UbWff 04krTAZQLNTLFyvofZDDd94rQVPC4CVp+FnPqyUznxeDN6K0vfDwjNT1umh3eQYVQSSN 6S6bVW4PvJhaN/XQpXwSDoFMC+LMmbU0MlwJRc1IYZGZ3vM77OxiRFKBSgVjhAewqBfL yK9hI9oMegKlun0DqKqlIwsjD6zwqSJFnXNuUHJDByI0w+a5/tNtH3tN+5naBS7tqs+b 0lQw== X-Received: by 10.66.122.201 with SMTP id lu9mr7901382pab.40.1392371205885; Fri, 14 Feb 2014 01:46:45 -0800 (PST) Received: from localhost.localdomain ([117.111.3.229]) by mx.google.com with ESMTPSA id yo9sm36632127pab.16.2014.02.14.01.46.42 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 14 Feb 2014 01:46:45 -0800 (PST) From: Daniel Jeong To: Mauro Carvalho Chehab , Sakari Ailus , Andy Shevchenko Cc: Hans Verkuil , Daniel Jeong , Subject: [RFC v3,3/3] media: i2c: add new dual LED Flash driver, lm3646 Date: Fri, 14 Feb 2014 18:46:30 +0900 Message-Id: <1392371190-32683-1-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 Add new dual flash driver. Fixed the previous issues and added device tree support. Signed-off-by: Daniel Jeong --- drivers/media/i2c/Kconfig | 9 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/lm3646.c | 451 ++++++++++++++++++++++++++++++++++++++++++++ include/media/lm3646.h | 87 +++++++++ 4 files changed, 548 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..388ffe9 --- /dev/null +++ b/drivers/media/i2c/lm3646.c @@ -0,0 +1,451 @@ +/* + * 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 + */ +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; +}; + +#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_update_bits(flash->regmap, + REG_ENABLE, MASK_ENABLE, MODE_SHDN); + break; + case V4L2_FLASH_LED_MODE_TORCH: + rval = regmap_update_bits(flash->regmap, + REG_ENABLE, MASK_ENABLE, MODE_TORCH); + break; + case V4L2_FLASH_LED_MODE_FLASH: + rval = regmap_update_bits(flash->regmap, + REG_ENABLE, MASK_ENABLE, 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; + + /* 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 */ + rval = regmap_read(flash->regmap, REG_FLAG, ®_val); + return rval; +} + +#ifdef CONFIG_OF + +static int lm3646_parse_dt(struct i2c_client *client, + struct lm3646_platform_data *pdata) +{ + struct device_node *node = client->dev.of_node; + + if (!node) + return -EINVAL; + + of_property_read_u32(node, "flash_timeout", &pdata->flash_timeout); + if (pdata->flash_timeout > LM3646_FLASH_TOUT_MAX) + pdata->flash_timeout = LM3646_FLASH_TOUT_MAX; + + of_property_read_u32(node, "led1_torch_brt", &pdata->led1_torch_brt); + if (pdata->led1_torch_brt > LM3646_LED1_TORCH_BRT_MAX) + pdata->led1_torch_brt = LM3646_LED1_TORCH_BRT_MAX; + + of_property_read_u32(node, "led1_flash_brt", &pdata->led1_flash_brt); + if (pdata->led1_flash_brt > LM3646_LED1_FLASH_BRT_MAX) + pdata->led1_flash_brt = LM3646_LED1_FLASH_BRT_MAX; + + return 0; +} + +static const struct of_device_id of_lm3642_bl_match[] = { + {.compatible = "ti,lm3646",}, + {}, +}; + +#else + +static int lm3646_parse_dt(struct i2c_client *client, + struct lm3646_platform_data *pdata) +{ + return -EINVAL; +} + +#endif + +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); + + /* if there is no platform data, use default values */ + if (pdata == NULL) { + pdata = devm_kzalloc(&client->dev, + sizeof(struct lm3646_platform_data), + GFP_KERNEL); + if (pdata == NULL) + return -ENOMEM; + if (lm3646_parse_dt(client, pdata) < 0) { + /* no data at device tree and platform data, use default */ + 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__ */