From patchwork Sat May 6 15:54:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jakob Hauser X-Patchwork-Id: 680170 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2717DC7EE2A for ; Sat, 6 May 2023 15:55:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233153AbjEFPz2 (ORCPT ); Sat, 6 May 2023 11:55:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59592 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233145AbjEFPzN (ORCPT ); Sat, 6 May 2023 11:55:13 -0400 Received: from sonic304-22.consmr.mail.ir2.yahoo.com (sonic304-22.consmr.mail.ir2.yahoo.com [77.238.179.147]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 11EFF1A499 for ; Sat, 6 May 2023 08:55:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rocketmail.com; s=s2048; t=1683388508; bh=ivF0LDJr0rdgeglbnPdeUqKu3n3YDiewDyMTaQ5r3b8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From:Subject:Reply-To; b=YOU4bMgCW7SO67PCFka+GBQkuCgJnW+YvGqHDzlG3NcVhAisgxakAi8v6/UC+pQB1xaB1klYNE4HRzrNsH8Dz6pDiTyHGBjgvNEuBYjPjzzWP5RQ5o/rXMdA2LH0b9j+258BzfCJESCkJTfxpZ9/GdTJQ78dB8j3/eId5R4tI11XYJK3+QZOsoGbJ2XI87GDIgfXcttlK0Mb+zGpsbvqEbvdDG9C28+lWHSPklIPyBxUEy3BOML3n1Z+8pnvjHtOoDXE0fjFCDM6x6cFxdBi8kWuha6sCbn42ULNYxOBFIVuxqOp4FvQw9svDjVt2WMkfaMnjTsVEhNw1jQgiFQrag== X-SONIC-DKIM-SIGN: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1683388508; bh=Fr7U53D/1wyIvEra2i0D07RdS3ppSSa47mqtJSc00z6=; h=X-Sonic-MF:From:To:Subject:Date:From:Subject; b=IsoKrc8IoQLR9oyjdh8NDmpln8dcsmeSwsb53ZZ/cumPImwUwHA30Q9cFTOYm4/7iCqWkC+V7y5Z8uYP8y/VVY+Vty+sVkfVjyriPWERLQxybA1tjjITGxUKVjEpj14bSbj+HHCUJ0TGbIoGI/S4M2P4GWHUt2R0aKYwrHC79MPJcGLRWNc4iquxt1QTHXEODafmFzXdeQpdJl3F6PKKYV4rcjckeOHPgGTG0yaBKmqr1AXRaLNzKbYuGJN74ppEsj1UKpoJwnRTsOSMfkc9/QGfITNTumQ91NPnQA3bn90A0uT2/G3tIYLcX6hmy9yIHwb2D/x9PpYGQMsmXNOxvA== X-YMail-OSG: D63P828VM1lrPUhMqkXmt6p4Myx7A.d5oYt3ugoJl1iISFIoAV5eeLqWWvN31WT FKwW0J2AuEZ92oL26ttReGoL7kV4HFI4ivR_ds2lGlvhzoQf.Dcst5Ku8tslw3DJV9CHau1yVhEJ nx2k5zrcyNvKLXzikctzz07r0_T_aLlhpim7UaOjhE0O5bZz3WhDlO_kbuzmGmtL5fCHuAWgCpyy RHdmaI.y7_BxcKvcmV1Mo916h2R38kihfQqfvI4ZVPeIxE5uTe2_KD7LYDFE_J4M5GFMV3piz6JH PSrQKezJwM3TxP3.fC.BebOYQX8VV.Y9e8AKdtofU1Zk7kyfK2UrgQ_sXq.ANyep1a2ckXga3Nd7 BXZm1tQLynHToelxcARxfMTVSlzRlavj2I.uCKJc.EljYE31Dq0OdOqhnUlk5gFoLwOC1tYcR14Z nkElKNvOmAx1kBROIFTlzxwRlfCbwY72ShJvQThvUqNUJEVr9W60ULUPAMOLNezR9rcXBoxfyyW8 94A0JrC4UQsAxCChROlvAqGK6qquMvbUYWnQwPPLYwq8XdY1eLl9nUUbEunWFxdk1TSkM9QCp2UA IrlgoE6oFsUtyAgmK_9vduZOVmCR3vNrwvPVFWO06psPlGNKqfdMWsEDlOGXI.inbUtpxIB88dgf 2cV7LPHeJ7xY5A3VQ1AYBCdvKdqlHaoapzXRHvKTJ4ATJdTPWx_3V8NL54M0HOIHv6YgShaRwPzM dru5yaiMYYnC_hUFt0u27ALP3MoX7Q6uCYErPydalPmB8ry6lblfirWub7uBZLTzGhVOZa9BxcbW YAawQgHQ9EYUPMLN_.c5RJ36EQ9JJjpNlzIyAEz1SsHX0lOEBbCG3LcBlLkK8WdKq.k3kIg7ILI6 gB49q567brnMhOIT3HDKI07Bq4Tb9SHdUllj7H0CLtNQSD14iA11u3fT9EOcDrIFovRuPsV0aYqT qCAe8KAlqXWQ0I53GRBlkZNpufzsVcj0MltK1RUV2gcD1tpUmQggS9K8LyLnSd_y3qj7nn8SHsBl CUsMlutYWbaM1.TvHhEcs.Y2sBy.hZ0EFS_aD5glZaUy25GyHxPqzrsbrwLtyB55TohSiyjQlYs_ KS3G_rnSVU.XGcocp6IcDp7bYmFsAZoGwSLDmirX8wBKCxSdPXWJ72G4X6BdKIVYuNWvp9bhUe6j T_xQUxoB1XvlxmFkkwFGlm0pitoqqf15VpDCfhZjbXbB0KAft9H647qGfo34NeuUiYv_Kz.4LFC. vK2VLcOaCfXzalYMI0CEF4xarAALbp4COc9zA3WdmIuWFU8Hj6sm_K_Yu9t1Ipk_wWT4xbKQ1_oI KW36OOs0t5O71d9X.2.DnUXdyeUK1DxvuSpr6BBHY9g9HAQRHPHZ2QqBd9E0.ppRKV5nhSz3PtgM cJeIMFFiBmtT8s6WRuZOvYBD0Eum7yctPTkbVikAGwLS7ZoqZ9gdFxBiw1IzFfrC1ndCoOy.N4Mf Dr9RDfBk4.sc9BbxDd4ifaA2mW6V1WN16ol9TV44l3lurMh2wucdv3lkt3W89zvWPjpAhBxu.6Yh p3OOJNjUDx5KrE3hhKvWBHRjhIGwaF_wUGxAc28CN1i_IPv1PlUXlGXVqzCZYrL8X2rDPwwOCNaP klA9wZwJVkSHAcaCaL_chR.MiRdbxf3jS3B_2peAgckiS8_uN.KMMDoV22QVlUP3KepW2slIV5Kp meMNPDdN_XMDxoITCExBxlFPQtNzwahy697lt7gSQRzy_qbs1sJHl0u0jVOvrOPIt5akBE4CfQ3Y wRJkWdFuQ0OqYLLY5wwSvD89_1jTITkbUrbvxglZ4FakQjvvr9ECPksmtM6lPyuH2YJ5NHipTQDW BvXU2g8JF2eicnK3ncZKeYGwDkfUpNGa.P2.dU2sdTxPgdybYQZJNLPLqLFapjBmVwR3Bs369RjK EPd5zAwB62QC6HDQgw1SJacKwqXEbhH2a6G7vwqBm_yPEbn24B_hQkPKAv8QOOdjy0NT5pGGJJQ_ hkrro6W.GxkwH1meGaUitv83x5HvH2bnWpkChyRVZqwyVditUFf6ZDc2U_OJne03COcCPlYhcZFz FgIQ7c8XUZTr6viNlWJufFIEriUkWkhLP1QRBSJSU0by6qFVu8ar.lq7d3kwkLcKIvTm5QqxctL6 IzPGg1YwmOKZDllg0kfFeW4rvkHeeuEPxOJ4E.V.TijkD4MzcT3_qiGSJsAk32QVEcA7RlLQwEEO ZVODFBz_kk0P6S_t4GxNxIspnZsV_zG84_kDjy.PsyBWlzCsuaai2oOo1FalTd6u43FYIVP0PlNR MLIuFGfudpYpKPJW2lwD4YGSxvsr4 X-Sonic-MF: X-Sonic-ID: aed367c7-31d0-488c-bef1-41dd68074d9e Received: from sonic.gate.mail.ne1.yahoo.com by sonic304.consmr.mail.ir2.yahoo.com with HTTP; Sat, 6 May 2023 15:55:08 +0000 Received: by hermes--production-ir2-74cd8fc864-s5qrx (Yahoo Inc. Hermes SMTP Server) with ESMTPA ID 2f796affa0781b2e3002453351a4dea5; Sat, 06 May 2023 15:55:06 +0000 (UTC) From: Jakob Hauser To: Sebastian Reichel , Lee Jones , Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski Cc: Beomho Seo , Chanwoo Choi , Stephan Gerhold , Raymond Hackley , Pavel Machek , Axel Lin , ChiYuan Huang , Linus Walleij , Henrik Grimler , linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, phone-devel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht Subject: [PATCH v4 5/8] power: supply: rt5033_charger: Add RT5033 charger device driver Date: Sat, 6 May 2023 17:54:32 +0200 Message-Id: <20230506155435.3005-6-jahau@rocketmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230506155435.3005-1-jahau@rocketmail.com> References: <20230506155435.3005-1-jahau@rocketmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org This patch adds device driver of Richtek RT5033 PMIC. The driver supports switching charger. rt5033 charger provides three charging modes. The charging modes are pre-charge mode, fast charge mode and constant voltage mode. They vary in charge rate, the charge parameters can be controlled by i2c interface. Cc: Beomho Seo Cc: Chanwoo Choi Tested-by: Raymond Hackley Signed-off-by: Jakob Hauser Reviewed-by: Linus Walleij --- drivers/power/supply/Kconfig | 8 + drivers/power/supply/Makefile | 1 + drivers/power/supply/rt5033_charger.c | 464 ++++++++++++++++++++++++++ 3 files changed, 473 insertions(+) create mode 100644 drivers/power/supply/rt5033_charger.c diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index c78be9f322e6..ea11797670ca 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -766,6 +766,14 @@ config BATTERY_RT5033 The fuelgauge calculates and determines the battery state of charge according to battery open circuit voltage. +config CHARGER_RT5033 + tristate "RT5033 battery charger support" + depends on MFD_RT5033 + help + This adds support for battery charger in Richtek RT5033 PMIC. + The device supports pre-charge mode, fast charge mode and + constant voltage mode. + config CHARGER_RT9455 tristate "Richtek RT9455 battery charger driver" depends on I2C diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile index 4adbfba02d05..dfc624bbcf1d 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -54,6 +54,7 @@ obj-$(CONFIG_BATTERY_MAX17040) += max17040_battery.o obj-$(CONFIG_BATTERY_MAX17042) += max17042_battery.o obj-$(CONFIG_BATTERY_MAX1721X) += max1721x_battery.o obj-$(CONFIG_BATTERY_RT5033) += rt5033_battery.o +obj-$(CONFIG_CHARGER_RT5033) += rt5033_charger.o obj-$(CONFIG_CHARGER_RT9455) += rt9455_charger.o obj-$(CONFIG_CHARGER_RT9467) += rt9467-charger.o obj-$(CONFIG_CHARGER_RT9471) += rt9471.o diff --git a/drivers/power/supply/rt5033_charger.c b/drivers/power/supply/rt5033_charger.c new file mode 100644 index 000000000000..038530d2f0a0 --- /dev/null +++ b/drivers/power/supply/rt5033_charger.c @@ -0,0 +1,464 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Battery charger driver for RT5033 + * + * Copyright (C) 2014 Samsung Electronics, Co., Ltd. + * Author: Beomho Seo + * + * 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 + +static int rt5033_get_charger_state(struct rt5033_charger *charger) +{ + struct regmap *regmap = charger->rt5033->regmap; + unsigned int reg_data; + int state; + + if (!regmap) + return POWER_SUPPLY_STATUS_UNKNOWN; + + regmap_read(regmap, RT5033_REG_CHG_STAT, ®_data); + + switch (reg_data & RT5033_CHG_STAT_MASK) { + case RT5033_CHG_STAT_DISCHARGING: + state = POWER_SUPPLY_STATUS_DISCHARGING; + break; + case RT5033_CHG_STAT_CHARGING: + state = POWER_SUPPLY_STATUS_CHARGING; + break; + case RT5033_CHG_STAT_FULL: + state = POWER_SUPPLY_STATUS_FULL; + break; + case RT5033_CHG_STAT_NOT_CHARGING: + state = POWER_SUPPLY_STATUS_NOT_CHARGING; + break; + default: + state = POWER_SUPPLY_STATUS_UNKNOWN; + } + + return state; +} + +static int rt5033_get_charger_type(struct rt5033_charger *charger) +{ + struct regmap *regmap = charger->rt5033->regmap; + unsigned int reg_data; + int state; + + regmap_read(regmap, RT5033_REG_CHG_STAT, ®_data); + + switch (reg_data & RT5033_CHG_STAT_TYPE_MASK) { + case RT5033_CHG_STAT_TYPE_FAST: + state = POWER_SUPPLY_CHARGE_TYPE_FAST; + break; + case RT5033_CHG_STAT_TYPE_PRE: + state = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; + break; + default: + state = POWER_SUPPLY_CHARGE_TYPE_NONE; + } + + return state; +} + +static int rt5033_get_charger_current_limit(struct rt5033_charger *charger) +{ + struct regmap *regmap = charger->rt5033->regmap; + unsigned int state, reg_data, data; + + regmap_read(regmap, RT5033_REG_CHG_CTRL5, ®_data); + + state = (reg_data & RT5033_CHGCTRL5_ICHG_MASK) + >> RT5033_CHGCTRL5_ICHG_SHIFT; + + data = RT5033_CHARGER_FAST_CURRENT_MIN + + RT5033_CHARGER_FAST_CURRENT_STEP_NUM * state; + + return data; +} + +static int rt5033_get_charger_const_voltage(struct rt5033_charger *charger) +{ + struct regmap *regmap = charger->rt5033->regmap; + unsigned int state, reg_data, data; + + regmap_read(regmap, RT5033_REG_CHG_CTRL2, ®_data); + + state = (reg_data & RT5033_CHGCTRL2_CV_MASK) + >> RT5033_CHGCTRL2_CV_SHIFT; + + data = RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MIN + + RT5033_CHARGER_CONST_VOLTAGE_STEP_NUM * state; + + return data; +} + +static inline int rt5033_init_const_charge(struct rt5033_charger *charger) +{ + struct rt5033_charger_data *chg = charger->chg; + int ret; + unsigned int val; + u8 reg_data; + + /* Set constant voltage mode */ + if (chg->const_uvolt < RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MIN || + chg->const_uvolt > RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MAX) { + dev_err(charger->dev, + "Value 'constant-charge-voltage-max-microvolt' out of range\n"); + return -EINVAL; + } + + if (chg->const_uvolt == RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MIN) + reg_data = 0x00; + else if (chg->const_uvolt == RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MAX) + reg_data = RT5033_CV_MAX_VOLTAGE; + else { + val = chg->const_uvolt; + val -= RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MIN; + val /= RT5033_CHARGER_CONST_VOLTAGE_STEP_NUM; + reg_data = val; + } + + ret = regmap_update_bits(charger->rt5033->regmap, RT5033_REG_CHG_CTRL2, + RT5033_CHGCTRL2_CV_MASK, + reg_data << RT5033_CHGCTRL2_CV_SHIFT); + if (ret) { + dev_err(charger->dev, "Failed regmap update\n"); + return -EINVAL; + } + + /* Set end of charge current */ + if (chg->eoc_uamp < RT5033_CHARGER_EOC_MIN || + chg->eoc_uamp > RT5033_CHARGER_EOC_MAX) { + dev_err(charger->dev, + "Value 'charge-term-current-microamp' out of range\n"); + return -EINVAL; + } + + if (chg->eoc_uamp == RT5033_CHARGER_EOC_MIN) + reg_data = 0x01; + else if (chg->eoc_uamp == RT5033_CHARGER_EOC_MAX) + reg_data = 0x07; + else { + val = chg->eoc_uamp; + if (val < RT5033_CHARGER_EOC_REF) { + val -= RT5033_CHARGER_EOC_MIN; + val /= RT5033_CHARGER_EOC_STEP_NUM1; + reg_data = 0x01 + val; + } else if (val > RT5033_CHARGER_EOC_REF) { + val -= RT5033_CHARGER_EOC_REF; + val /= RT5033_CHARGER_EOC_STEP_NUM2; + reg_data = 0x04 + val; + } else { + reg_data = 0x04; + } + } + + ret = regmap_update_bits(charger->rt5033->regmap, RT5033_REG_CHG_CTRL4, + RT5033_CHGCTRL4_EOC_MASK, reg_data); + if (ret) { + dev_err(charger->dev, "Failed regmap update\n"); + return -EINVAL; + } + + return 0; +} + +static inline int rt5033_init_fast_charge(struct rt5033_charger *charger) +{ + struct rt5033_charger_data *chg = charger->chg; + int ret; + unsigned int val; + u8 reg_data; + + /* Set limit input current */ + ret = regmap_update_bits(charger->rt5033->regmap, RT5033_REG_CHG_CTRL1, + RT5033_CHGCTRL1_IAICR_MASK, RT5033_AICR_2000_MODE); + if (ret) { + dev_err(charger->dev, "Failed regmap update\n"); + return -EINVAL; + } + + /* Set fast-charge mode charging current */ + if (chg->fast_uamp < RT5033_CHARGER_FAST_CURRENT_MIN || + chg->fast_uamp > RT5033_CHARGER_FAST_CURRENT_MAX) { + dev_err(charger->dev, + "Value 'constant-charge-current-max-microamp' out of range\n"); + return -EINVAL; + } + + if (chg->fast_uamp == RT5033_CHARGER_FAST_CURRENT_MIN) + reg_data = 0x00; + else if (chg->fast_uamp == RT5033_CHARGER_FAST_CURRENT_MAX) + reg_data = RT5033_CHG_MAX_CURRENT; + else { + val = chg->fast_uamp; + val -= RT5033_CHARGER_FAST_CURRENT_MIN; + val /= RT5033_CHARGER_FAST_CURRENT_STEP_NUM; + reg_data = val; + } + + ret = regmap_update_bits(charger->rt5033->regmap, RT5033_REG_CHG_CTRL5, + RT5033_CHGCTRL5_ICHG_MASK, + reg_data << RT5033_CHGCTRL5_ICHG_SHIFT); + if (ret) { + dev_err(charger->dev, "Failed regmap update\n"); + return -EINVAL; + } + + return 0; +} + +static inline int rt5033_init_pre_charge(struct rt5033_charger *charger) +{ + struct rt5033_charger_data *chg = charger->chg; + int ret; + unsigned int val; + u8 reg_data; + + /* Set pre-charge threshold voltage */ + if (chg->pre_uvolt < RT5033_CHARGER_PRE_THRESHOLD_LIMIT_MIN || + chg->pre_uvolt > RT5033_CHARGER_PRE_THRESHOLD_LIMIT_MAX) { + dev_err(charger->dev, + "Value 'precharge-upper-limit-microvolt' out of range\n"); + return -EINVAL; + } + + if (chg->pre_uvolt == RT5033_CHARGER_PRE_THRESHOLD_LIMIT_MIN) + reg_data = 0x00; + else if (chg->pre_uvolt == RT5033_CHARGER_PRE_THRESHOLD_LIMIT_MAX) + reg_data = 0x0f; + else { + val = chg->pre_uvolt; + val -= RT5033_CHARGER_PRE_THRESHOLD_LIMIT_MIN; + val /= RT5033_CHARGER_PRE_THRESHOLD_STEP_NUM; + reg_data = val; + } + + ret = regmap_update_bits(charger->rt5033->regmap, RT5033_REG_CHG_CTRL5, + RT5033_CHGCTRL5_VPREC_MASK, reg_data); + if (ret) { + dev_err(charger->dev, "Failed regmap update\n"); + return -EINVAL; + } + + /* Set pre-charge mode charging current */ + if (chg->pre_uamp < RT5033_CHARGER_PRE_CURRENT_LIMIT_MIN || + chg->pre_uamp > RT5033_CHARGER_PRE_CURRENT_LIMIT_MAX) { + dev_err(charger->dev, + "Value 'precharge-current-microamp' out of range\n"); + return -EINVAL; + } + + if (chg->pre_uamp == RT5033_CHARGER_PRE_CURRENT_LIMIT_MIN) + reg_data = 0x00; + else if (chg->pre_uamp == RT5033_CHARGER_PRE_CURRENT_LIMIT_MAX) + reg_data = RT5033_CHG_MAX_PRE_CURRENT; + else { + val = chg->pre_uamp; + val -= RT5033_CHARGER_PRE_CURRENT_LIMIT_MIN; + val /= RT5033_CHARGER_PRE_CURRENT_STEP_NUM; + reg_data = val; + } + + ret = regmap_update_bits(charger->rt5033->regmap, RT5033_REG_CHG_CTRL4, + RT5033_CHGCTRL4_IPREC_MASK, + reg_data << RT5033_CHGCTRL4_IPREC_SHIFT); + if (ret) { + dev_err(charger->dev, "Failed regmap update\n"); + return -EINVAL; + } + + return 0; +} + +static int rt5033_charger_reg_init(struct rt5033_charger *charger) +{ + int ret = 0; + + /* Enable charging termination */ + ret = regmap_update_bits(charger->rt5033->regmap, RT5033_REG_CHG_CTRL1, + RT5033_CHGCTRL1_TE_EN_MASK, RT5033_TE_ENABLE); + if (ret) { + dev_err(charger->dev, "Failed to enable charging termination.\n"); + return -EINVAL; + } + + /* + * Disable minimum input voltage regulation (MIVR), this improves + * the charging performance. + */ + ret = regmap_update_bits(charger->rt5033->regmap, RT5033_REG_CHG_CTRL4, + RT5033_CHGCTRL4_MIVR_MASK, RT5033_CHARGER_MIVR_DISABLE); + if (ret) { + dev_err(charger->dev, "Failed to disable MIVR.\n"); + return -EINVAL; + } + + ret = rt5033_init_pre_charge(charger); + if (ret) + return ret; + + ret = rt5033_init_fast_charge(charger); + if (ret) + return ret; + + ret = rt5033_init_const_charge(charger); + if (ret) + return ret; + + return 0; +} + +static enum power_supply_property rt5033_charger_props[] = { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_CHARGE_TYPE, + POWER_SUPPLY_PROP_CURRENT_MAX, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, + POWER_SUPPLY_PROP_MODEL_NAME, + POWER_SUPPLY_PROP_MANUFACTURER, + POWER_SUPPLY_PROP_ONLINE, +}; + +static int rt5033_charger_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct rt5033_charger *charger = power_supply_get_drvdata(psy); + int ret = 0; + + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + val->intval = rt5033_get_charger_state(charger); + break; + case POWER_SUPPLY_PROP_CHARGE_TYPE: + val->intval = rt5033_get_charger_type(charger); + break; + case POWER_SUPPLY_PROP_CURRENT_MAX: + val->intval = rt5033_get_charger_current_limit(charger); + break; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + val->intval = rt5033_get_charger_const_voltage(charger); + break; + case POWER_SUPPLY_PROP_MODEL_NAME: + val->strval = RT5033_CHARGER_MODEL; + break; + case POWER_SUPPLY_PROP_MANUFACTURER: + val->strval = RT5033_MANUFACTURER; + break; + case POWER_SUPPLY_PROP_ONLINE: + val->intval = (rt5033_get_charger_state(charger) == + POWER_SUPPLY_STATUS_CHARGING); + break; + default: + return -EINVAL; + } + + return ret; +} + +static struct rt5033_charger_data *rt5033_charger_dt_init( + struct rt5033_charger *charger) +{ + struct rt5033_charger_data *chg; + struct power_supply_battery_info *info; + int ret; + + chg = devm_kzalloc(charger->dev, sizeof(*chg), GFP_KERNEL); + if (!chg) + return ERR_PTR(-ENOMEM); + + ret = power_supply_get_battery_info(charger->psy, &info); + if (ret) { + dev_err(charger->dev, "failed to get battery info\n"); + return ERR_PTR(-EINVAL); + } + + /* Assign data. Validity will be checked in the init functions. */ + chg->pre_uamp = info->precharge_current_ua; + chg->fast_uamp = info->constant_charge_current_max_ua; + chg->eoc_uamp = info->charge_term_current_ua; + chg->pre_uvolt = info->precharge_voltage_max_uv; + chg->const_uvolt = info->constant_charge_voltage_max_uv; + + return chg; +} + +static const struct power_supply_desc rt5033_charger_desc = { + .name = "rt5033-charger", + .type = POWER_SUPPLY_TYPE_USB, + .properties = rt5033_charger_props, + .num_properties = ARRAY_SIZE(rt5033_charger_props), + .get_property = rt5033_charger_get_property, +}; + +static int rt5033_charger_probe(struct platform_device *pdev) +{ + struct rt5033_charger *charger; + struct rt5033_dev *rt5033 = dev_get_drvdata(pdev->dev.parent); + struct power_supply_config psy_cfg = {}; + int ret; + + charger = devm_kzalloc(&pdev->dev, sizeof(*charger), GFP_KERNEL); + if (!charger) + return -ENOMEM; + + platform_set_drvdata(pdev, charger); + charger->dev = &pdev->dev; + charger->rt5033 = rt5033; + + psy_cfg.of_node = pdev->dev.of_node; + psy_cfg.drv_data = charger; + + charger->psy = devm_power_supply_register(&pdev->dev, + &rt5033_charger_desc, + &psy_cfg); + if (IS_ERR(charger->psy)) { + dev_err(&pdev->dev, "failed: power supply register\n"); + return PTR_ERR(charger->psy); + } + + charger->chg = rt5033_charger_dt_init(charger); + if (IS_ERR_OR_NULL(charger->chg)) + return -ENODEV; + + ret = rt5033_charger_reg_init(charger); + if (ret) + return ret; + + return 0; +} + +static const struct platform_device_id rt5033_charger_id[] = { + { "rt5033-charger", }, + { } +}; +MODULE_DEVICE_TABLE(platform, rt5033_charger_id); + +static const struct of_device_id rt5033_charger_of_match[] = { + { .compatible = "richtek,rt5033-charger", }, + { } +}; +MODULE_DEVICE_TABLE(of, rt5033_charger_of_match); + +static struct platform_driver rt5033_charger_driver = { + .driver = { + .name = "rt5033-charger", + .of_match_table = rt5033_charger_of_match, + }, + .probe = rt5033_charger_probe, + .id_table = rt5033_charger_id, +}; +module_platform_driver(rt5033_charger_driver); + +MODULE_DESCRIPTION("Richtek RT5033 charger driver"); +MODULE_AUTHOR("Beomho Seo "); +MODULE_LICENSE("GPL v2");