From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752167AbbJBJmD (ORCPT ); Fri, 2 Oct 2015 05:42:03 -0400 Received: from mailout1.samsung.com ([203.254.224.24]:46605 "EHLO mailout1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751224AbbJBJlU (ORCPT ); Fri, 2 Oct 2015 05:41:20 -0400 X-AuditID: cbfee68d-f79ae6d00000149a-03-560e513e91fe From: Ingi Kim To: robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, rpurdie@rpsys.net, j.anaszewski@samsung.com Cc: sameo@linux.intel.com, lee.jones@linaro.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org, Ingi Kim Subject: [PATCH 2/2] leds: rt5033: Add RT5033 Flash led device driver Date: Fri, 02 Oct 2015 18:41:15 +0900 Message-id: <1443778875-18261-3-git-send-email-ingi2.kim@samsung.com> X-Mailer: git-send-email 2.0.5 In-reply-to: <1443778875-18261-1-git-send-email-ingi2.kim@samsung.com> References: <1443778875-18261-1-git-send-email-ingi2.kim@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupjkeLIzCtJLcpLzFFi42JZI2JSomsXyBdmsGOVnsX8I+dYLfrfLGS1 OPdqJaPFjptf2Cx6rz5ntLj/9SijxeVdc9gstr5Zx2ix9PpFJosJ09eyWLTuPcJusXvXU1aL 092sDrwea+atYfS43NfL5LFy+Rc2j02rOtk87lzbw+Yx72Sgx575P1g9+rasYvT4vEkugDOK yyYlNSezLLVI3y6BK+Pf8U6Wgq8pFeu6r7M2MM4L6WLk5JAQMJE40/aGGcIWk7hwbz1bFyMX h5DACkaJ3b3PGWGKWlZ+Y4RILGWUmDTzAQuEM5VJ4uCfXWwgVWwCahI3VixkAkmICCxjlLiy 5g7YLGaB1YwS7w5tYgGpEhZwlbh5YRE7iM0ioCrxdsUqVhCbFyg+cf1bFoh9chJrXq0AszkF 3CReNGwCqxECqrkx5w0ryFAJgUfsEj+PrWOFGCQg8W3yIaAGDqCErMSmA1APSUocXHGDZQKj 8AJGhlWMoqkFyQXFSelFhnrFibnFpXnpesn5uZsYgdF0+t+z3h2Mtw9YH2IU4GBU4uGNOM0b JsSaWFZcmXuI0RRow0RmKdHkfGDM5pXEGxqbGVmYmpgaG5lbmimJ8ypK/QwWEkhPLEnNTk0t SC2KLyrNSS0+xMjEwSnVwHjzrcLj0r3P51up5Dy7lhB9u5Nvufh2/4exDte6nwV8iuXNeftm y8zls4Pmbl7Y7qQeM2v62ynHbnUvtFv19GXVmv2bi84Li0em+4aW5t9ddL20n0sizbBo2z9u m9cn4jQ7Lv/9Hz/Tdt+Kzue95uI6Z3POptVNXRuVHqD0dstLN0O/ZNVJC+WVWIozEg21mIuK EwHNTIQcoQIAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrNIsWRmVeSWpSXmKPExsVy+t9jAV27QL4wg8bjShbzj5xjteh/s5DV 4tyrlYwWO25+YbPovfqc0eL+16OMFpd3zWGz2PpmHaPF0usXmSwmTF/LYtG69wi7xe5dT1kt TnezOvB6rJm3htHjcl8vk8fK5V/YPDat6mTzuHNtD5vHvJOBHnvm/2D16NuyitHj8ya5AM6o BkabjNTElNQihdS85PyUzLx0WyXv4HjneFMzA0NdQ0sLcyWFvMTcVFslF58AXbfMHKC7lRTK EnNKgUIBicXFSvp2mCaEhrjpWsA0Ruj6hgTB9RgZoIGENYwZ/453shR8TalY132dtYFxXkgX IyeHhICJRMvKb4wQtpjEhXvr2boYuTiEBJYySkya+YAFwpnKJHHwzy42kCo2ATWJGysWMoEk RASWMUpcWXMHrIVZYDWjxLtDm1hAqoQFXCVuXljEDmKzCKhKvF2xihXE5gWKT1z/lgVin5zE mlcrwGxOATeJFw2bwGqEgGpuzHnDOoGRdwEjwypGidSC5ILipPRcw7zUcr3ixNzi0rx0veT8 3E2M4Ih9JrWD8eAu90OMAhyMSjy8Ead5w4RYE8uKK3MPMUpwMCuJ8Hop8YUJ8aYkVlalFuXH F5XmpBYfYjQFOmwis5Rocj4wmeSVxBsam5gZWRqZG1oYGZsrifPeOMQQJiSQnliSmp2aWpBa BNPHxMEp1cA4U0xkoYQxY0GN4/zsH6uT1noJdSsUKkhMdrEy9dW+bMiVzRnH+uqAuHmFTbj2 fD2PNCEe81nXAv91T5tfrL5xW+yPWVF605Lzd/EEdG56yxHBVGpQ2vPST9TwXOf9nlUJ8t3n 008wyh3ZOYMjymVX8paGM2muN3apfBeITPhhHDHRSuKxhRJLcUaioRZzUXEiABIocIfuAgAA DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds device driver of Richtek RT5033 PMIC. The driver supports a current regulated output to drive white LEDs for camera flash. Signed-off-by: Ingi Kim --- drivers/leds/Kconfig | 8 ++ drivers/leds/Makefile | 1 + drivers/leds/leds-rt5033.c | 222 +++++++++++++++++++++++++++++++++++++ drivers/mfd/rt5033.c | 3 + include/linux/mfd/rt5033-private.h | 67 +++++++++-- include/linux/mfd/rt5033.h | 27 ++++- 6 files changed, 317 insertions(+), 11 deletions(-) create mode 100644 drivers/leds/leds-rt5033.c diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index 42990f2..29613e3 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -345,6 +345,14 @@ config LEDS_PCA963X LED driver chip accessed via the I2C bus. Supported devices include PCA9633 and PCA9634 +config LEDS_RT5033 + tristate "LED support for RT5033 PMIC" + depends on LEDS_CLASS_FLASH && OF + depends on MFD_RT5033 + help + This option enables support for on-chip LED driver on + RT5033 PMIC. + config LEDS_WM831X_STATUS tristate "LED support for status LEDs on WM831x PMICs" depends on LEDS_CLASS diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index b503f92..bcc4d93 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile @@ -23,6 +23,7 @@ obj-$(CONFIG_LEDS_COBALT_QUBE) += leds-cobalt-qube.o obj-$(CONFIG_LEDS_COBALT_RAQ) += leds-cobalt-raq.o obj-$(CONFIG_LEDS_SUNFIRE) += leds-sunfire.o obj-$(CONFIG_LEDS_PCA9532) += leds-pca9532.o +obj-$(CONFIG_LEDS_RT5033) += leds-rt5033.o obj-$(CONFIG_LEDS_GPIO_REGISTER) += leds-gpio-register.o obj-$(CONFIG_LEDS_GPIO) += leds-gpio.o obj-$(CONFIG_LEDS_LP3944) += leds-lp3944.o diff --git a/drivers/leds/leds-rt5033.c b/drivers/leds/leds-rt5033.c new file mode 100644 index 0000000..b154676 --- /dev/null +++ b/drivers/leds/leds-rt5033.c @@ -0,0 +1,222 @@ +/* + * led driver for RT5033 + * + * Copyright (C) 2015 Samsung Electronics, Co., Ltd. + * Ingi Kim + * + * 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 + +#define RT5033_LED_FLASH_TIMEOUT_MIN 64000 +#define RT5033_LED_FLASH_TIMEOUT_STEPS 32000 +#define RT5033_LED_TORCH_CURRENT_LEVEL_MAX 16 + +/* Macro for getting offset of flash timeout */ +#define GET_TIMEOUT_OFFSET(tm, step) ((tm) / (step) - 2) + +static struct rt5033_led *flcdev_to_led( + struct led_classdev_flash *fled_cdev) +{ + return container_of(fled_cdev, struct rt5033_led, fled_cdev); +} + +static int rt5033_led_brightness_set(struct led_classdev *led_cdev, + enum led_brightness brightness) +{ + struct led_classdev_flash *fled_cdev = lcdev_to_flcdev(led_cdev); + struct rt5033_led *led = flcdev_to_led(fled_cdev); + + if (!brightness) { + regmap_update_bits(led->regmap, RT5033_REG_FL_FUNCTION2, + RT5033_FL_CTRL2_MASK, 0x0); + } else { + regmap_update_bits(led->regmap, RT5033_REG_FL_FUNCTION1, + RT5033_FL_FUNC1_MASK, RT5033_FL_PINCTRL); + regmap_update_bits(led->regmap, RT5033_REG_FL_CTRL1, + RT5033_FL_CTRL1_MASK, (brightness-1) << 4); + regmap_update_bits(led->regmap, RT5033_REG_FL_FUNCTION2, + RT5033_FL_CTRL2_MASK, RT5033_FL_ENFLED); + } + + return 0; +} + +static void rt5033_init_flash_timeout(struct rt5033_led *led) +{ + struct led_flash_setting *setting; + + setting = &led->fled_cdev.timeout; + setting->min = RT5033_LED_FLASH_TIMEOUT_MIN; + setting->max = led->data->flash_max_timeout; + setting->step = RT5033_LED_FLASH_TIMEOUT_STEPS; + setting->val = led->data->flash_max_timeout; +} + +static int rt5033_led_parse_dt(struct rt5033_led *led, struct device *dev) +{ + struct device_node *np = dev->of_node; + struct device_node *child_node; + struct rt5033_led_config_data *data; + int ret = 0; + + if (!np) + return -ENXIO; + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + child_node = of_get_next_available_child(np, NULL); + if (!child_node) { + dev_err(dev, "DT child node isn't found\n"); + return -EINVAL; + } + + led->fled_cdev.led_cdev.name = + of_get_property(child_node, "label", NULL) ? : child_node->name; + + ret = of_property_read_u32(child_node, "led-max-microamp", + &data->torch_max_microamp); + if (ret) { + dev_err(dev, "failed to parse led-max-microamp\n"); + return ret; + } + + ret = of_property_read_u32(child_node, "flash-max-microamp", + &data->flash_max_microamp); + if (ret) { + dev_err(dev, "failed to parse flash-max-microamp\n"); + return ret; + } + + ret = of_property_read_u32(child_node, "flash-max-timeout-us", + &data->flash_max_timeout); + if (ret) + dev_err(dev, "failed to parse flash-max-timeout-us\n"); + + of_node_put(child_node); + led->data = data; + + return ret; +} + +static int rt5033_led_flash_timeout_set(struct led_classdev_flash *fled_cdev, + u32 timeout) +{ + return 0; +} + +static int rt5033_led_flash_strobe_set(struct led_classdev_flash *fled_cdev, + bool state) +{ + struct rt5033_led *led = flcdev_to_led(fled_cdev); + u32 flash_tm_reg; + + regmap_update_bits(led->regmap, RT5033_REG_FL_FUNCTION1, + RT5033_FL_FUNC1_MASK, RT5033_FL_RESET); + fled_cdev->led_cdev.brightness = LED_OFF; + + if (state) { + flash_tm_reg = GET_TIMEOUT_OFFSET(fled_cdev->timeout.val, + fled_cdev->timeout.step); + regmap_update_bits(led->regmap, RT5033_REG_FL_STROBE_CTRL2, + RT5033_FL_STRBCTRL2_MASK, flash_tm_reg); + regmap_update_bits(led->regmap, RT5033_REG_FL_FUNCTION1, + RT5033_FL_FUNC1_MASK, RT5033_FL_STRB_SEL + | RT5033_FL_PINCTRL); + regmap_update_bits(led->regmap, RT5033_REG_FL_FUNCTION2, + RT5033_FL_FUNC2_MASK, RT5033_FL_ENFLED + | RT5033_FL_SREG_STRB); + } + + return 0; +} + +static const struct led_flash_ops flash_ops = { + .strobe_set = rt5033_led_flash_strobe_set, + .timeout_set = rt5033_led_flash_timeout_set, +}; + +static int rt5033_led_probe(struct platform_device *pdev) +{ + struct rt5033_dev *rt5033 = dev_get_drvdata(pdev->dev.parent); + struct rt5033_led *led; + struct led_classdev *led_cdev; + int ret; + + led = devm_kzalloc(&pdev->dev, sizeof(*led), GFP_KERNEL); + if (!led) + return -ENOMEM; + + platform_set_drvdata(pdev, led); + led->dev = &pdev->dev; + led->regmap = rt5033->regmap; + + ret = rt5033_led_parse_dt(led, &pdev->dev); + if (ret) + return ret; + + rt5033_init_flash_timeout(led); + led->fled_cdev.ops = &flash_ops; + led_cdev = &led->fled_cdev.led_cdev; + + led_cdev->max_brightness = RT5033_LED_TORCH_CURRENT_LEVEL_MAX; + led_cdev->brightness_set_sync = rt5033_led_brightness_set; + led_cdev->flags |= LED_CORE_SUSPENDRESUME | LED_DEV_CAP_FLASH; + + ret = led_classdev_flash_register(&pdev->dev, &led->fled_cdev); + if (ret < 0) { + dev_err(&pdev->dev, "can't register LED %s\n", led_cdev->name); + return ret; + } + + regmap_update_bits(led->regmap, RT5033_REG_FL_FUNCTION1, + RT5033_FL_FUNC1_MASK, RT5033_FL_RESET); + + return 0; +} + +static int rt5033_led_remove(struct platform_device *pdev) +{ + struct rt5033_led *led = platform_get_drvdata(pdev); + + led_classdev_flash_unregister(&led->fled_cdev); + + return 0; +} + +static const struct platform_device_id rt5033_led_id[] = { + { "rt5033-led", }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(platform, rt5033_led_id); + +static const struct of_device_id rt5033_led_match[] = { + { .compatible = "richtek,rt5033-led", }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, rt5033_led_match); + +static struct platform_driver rt5033_led_driver = { + .driver = { + .name = "rt5033-led", + .of_match_table = rt5033_led_match, + }, + .probe = rt5033_led_probe, + .id_table = rt5033_led_id, + .remove = rt5033_led_remove, +}; +module_platform_driver(rt5033_led_driver); + +MODULE_AUTHOR("Ingi Kim "); +MODULE_DESCRIPTION("Richtek RT5033 LED driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:rt5033-led"); diff --git a/drivers/mfd/rt5033.c b/drivers/mfd/rt5033.c index d60f916..035421c 100644 --- a/drivers/mfd/rt5033.c +++ b/drivers/mfd/rt5033.c @@ -47,6 +47,9 @@ static const struct mfd_cell rt5033_devs[] = { }, { .name = "rt5033-battery", .of_compatible = "richtek,rt5033-battery", + }, { + .name = "rt5033-led", + .of_compatible = "richtek,rt5033-led", }, }; diff --git a/include/linux/mfd/rt5033-private.h b/include/linux/mfd/rt5033-private.h index 1b63fc2..21c3aff 100644 --- a/include/linux/mfd/rt5033-private.h +++ b/include/linux/mfd/rt5033-private.h @@ -25,15 +25,15 @@ enum rt5033_reg { /* Reserved 0x09~0x18 */ RT5033_REG_RT_CTRL1 = 0x19, /* Reserved 0x1A~0x20 */ - RT5033_REG_FLED_FUNCTION1 = 0x21, - RT5033_REG_FLED_FUNCTION2 = 0x22, - RT5033_REG_FLED_STROBE_CTRL1 = 0x23, - RT5033_REG_FLED_STROBE_CTRL2 = 0x24, - RT5033_REG_FLED_CTRL1 = 0x25, - RT5033_REG_FLED_CTRL2 = 0x26, - RT5033_REG_FLED_CTRL3 = 0x27, - RT5033_REG_FLED_CTRL4 = 0x28, - RT5033_REG_FLED_CTRL5 = 0x29, + RT5033_REG_FL_FUNCTION1 = 0x21, + RT5033_REG_FL_FUNCTION2 = 0x22, + RT5033_REG_FL_STROBE_CTRL1 = 0x23, + RT5033_REG_FL_STROBE_CTRL2 = 0x24, + RT5033_REG_FL_CTRL1 = 0x25, + RT5033_REG_FL_CTRL2 = 0x26, + RT5033_REG_FL_CTRL3 = 0x27, + RT5033_REG_FL_CTRL4 = 0x28, + RT5033_REG_FL_CTRL5 = 0x29, /* Reserved 0x2A~0x40 */ RT5033_REG_CTRL = 0x41, RT5033_REG_BUCK_CTRL = 0x42, @@ -93,6 +93,55 @@ enum rt5033_reg { #define RT5033_RT_CTRL1_UUG_MASK 0x02 #define RT5033_RT_HZ_MASK 0x01 +/* RT5033 FLED Function1 register */ +#define RT5033_FL_FLED1_MASK 0x94 +#define RT5033_FL_STROBE_SEL 0x04 +#define RT5033_FL_PIN_CTRL 0x10 +#define RT5033_FL_RESET 0x80 + +/* RT5033 FLED Function2 register */ +#define RT5033_FL_FLED2_MASK 0x81 +#define RT5033_FL_ENFLED 0x01 +#define RT5033_FL_SREG_STROBE 0x80 + +/* RT5033 FLED Strobe Control1 */ +#define RT5033_FL_STRBCTRL1_MASK 0xFF +#define RT5033_FL_STRBCTRL1_TM_CUR_MAX 0xE0 +#define RT5033_FL_STRBCTRL1_FL_CUR_DEF 0x0D +#define RT5033_FL_STRBCTRL1_FL_CUR_MAX 0x1F + +/* RT5033 FLED Strobe Control2 */ +#define RT5033_FL_STRBCTRL2_MASK 0x3F +#define RT5033_FL_STRBCTRL2_TM_DEF 0x0F +#define RT5033_FL_STRBCTRL2_TM_MAX 0x3F + +/* RT5033 FLED Control1 */ +#define RT5033_FL_CTRL1_MASK 0xF7 +#define RT5033_FL_CTRL1_TORCH_CUR_DEF 0x20 +#define RT5033_FL_CTRL1_TORCH_CUR_MAX 0xF0 +#define RT5033_FL_CTRL1_LBP_DEF 0x02 +#define RT5033_FL_CTRL1_LBP_MAX 0x07 + +/* RT5033 FLED Control2 */ +#define RT5033_FL_CTRL2_MASK 0xFF +#define RT5033_FL_CTRL2_VMID_DEF 0x37 +#define RT5033_FL_CTRL2_VMID_MAX 0x3F +#define RT5033_FL_CTRL2_TRACK_ALIVE 0x40 +#define RT5033_FL_CTRL2_MID_TRACK 0x80 + +/* RT5033 FLED Control4 */ +#define RT5033_FL_CTRL4_MASK 0xE0 +#define RT5033_FL_CTRL4_RESV 0x14 +#define RT5033_FL_CTRL4_VTRREG_DEF 0x40 +#define RT5033_FL_CTRL4_VTRREG_MAX 0x60 +#define RT5033_FL_CTRL4_TRACK_CLK 0x80 + +/* RT5033 FLED Control5 */ +#define RT5033_FL_CTRL5_MASK 0xC0 +#define RT5033_FL_CTRL5_RESV 0x10 +#define RT5033_FL_CTRL5_TA_GOOD 0x40 +#define RT5033_FL_CTRL5_TA_EXIST 0x80 + /* RT5033 control register */ #define RT5033_CTRL_FCCM_BUCK_MASK 0x00 #define RT5033_CTRL_BUCKOMS_MASK 0x01 diff --git a/include/linux/mfd/rt5033.h b/include/linux/mfd/rt5033.h index 6cff5cf..45c97b7 100644 --- a/include/linux/mfd/rt5033.h +++ b/include/linux/mfd/rt5033.h @@ -12,10 +12,11 @@ #ifndef __RT5033_H__ #define __RT5033_H__ -#include +#include #include -#include #include +#include +#include /* RT5033 regulator IDs */ enum rt5033_regulators { @@ -59,4 +60,26 @@ struct rt5033_charger { struct rt5033_charger_data *chg; }; +/* RT5033 led platform data */ + +struct rt5033_led_config_data { + /* maximum LED current in movie mode */ + u32 torch_max_microamp; + /* maximum LED current in flash mode */ + u32 flash_max_microamp; + /* maximum flash timeout */ + u32 flash_max_timeout; + /* max LED brightness level */ + enum led_brightness max_brightness; +}; + +struct rt5033_led { + struct device *dev; + struct rt5033_dev *rt5033; + struct regmap *regmap; + + /* Related LED class device */ + struct led_classdev cdev; +}; + #endif /* __RT5033_H__ */ -- 2.0.5