From patchwork Tue Feb 5 09:12:32 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 10797163 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4866213BF for ; Tue, 5 Feb 2019 09:13:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 36EAC2ABA2 for ; Tue, 5 Feb 2019 09:13:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2A1AE2B7E1; Tue, 5 Feb 2019 09:13:36 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4E3242ABA2 for ; Tue, 5 Feb 2019 09:13:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728074AbfBEJNe (ORCPT ); Tue, 5 Feb 2019 04:13:34 -0500 Received: from mail-wm1-f66.google.com ([209.85.128.66]:54788 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728470AbfBEJMx (ORCPT ); Tue, 5 Feb 2019 04:12:53 -0500 Received: by mail-wm1-f66.google.com with SMTP id a62so2708937wmh.4 for ; Tue, 05 Feb 2019 01:12:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ALEe4JKnBhyESKKAqV8XMg4xjYLlNxZKqnbeNG9K12g=; b=OpOxapmy53IYeepdpjLRX4UkEW5ho5piY+ki+N2pKmmXlcXYSUqM5AEXLameknfvmq KIHbzaQkCWeeswchiAGpNMIwuo6YAyRJcQQ13yQYqhLxvUHEoM5d8w+aRJ7tbsPVBnBB Xl0dPOIaNBZhO8KkMK7dH/fYCatvnjlxnAeMEQQGhWF45pJVHhPGzleLDGYP0dgkGNEf 3ta6ZEuNbo3+p0JTGH3EaFvzlVWA1nyA5bD2moaA+asHHFqUbBh3h3vT0BCdyP2GIgLS RZaBzXfxHIZUjgBAe2TaI6fpOKM32uSeRcJijO4TpuR9iuEkBTwHix1j6wqWI1tDufY9 q4eA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ALEe4JKnBhyESKKAqV8XMg4xjYLlNxZKqnbeNG9K12g=; b=U7W9yDgZ508BGzLtHq9nY4DVG81XjAZPqyseFTcq3fuW/uwLptvwt0VEV7IpReQff0 h89Lv2oLs8c8RCHYglnNNs73yeRh6FUV3pOEqmVo8wcaEOuUYVj9NXB4+AaUwRhlCWqG yJdW6pnI70xDBKKu45MRaYVKeZ7qswU919Wj8L6ZBSgQJ0S3X3tNaD0rg3Lc8j39t/94 fZIfNFHUYHZULN6FBwmlK2aenkb+YPQarv6QSyRsEwuDPm9FHgZhkxQtS/GkXvAgSNKW RLALNYD3NUOKxb47dawPNHVSmUgFhJq1WPyLXbvcu9xQAQCzufJj57SLkuOhu2PRcjjh Kkqw== X-Gm-Message-State: AHQUAublnmvSIPodT4jBot0rDFlafhKJcS99mTYvAdC66kACTGnMrwGf HiZ8bCSOXpWFV/AyFgsdkyQ5qQ== X-Google-Smtp-Source: AHgI3IbBWm6VumwdN0p9pb650SV6+WerfR75rFnppI2QGlEqI/G5VtAXEmBo05BA/uu1ckkpgS1wrg== X-Received: by 2002:a1c:1f83:: with SMTP id f125mr2751978wmf.56.1549357970717; Tue, 05 Feb 2019 01:12:50 -0800 (PST) Received: from debian-brgl.home ([2a01:cb1d:af:5b00:6d6c:8493:1ab5:dad7]) by smtp.gmail.com with ESMTPSA id s5sm10433657wmh.37.2019.02.05.01.12.49 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 05 Feb 2019 01:12:50 -0800 (PST) From: Bartosz Golaszewski To: Rob Herring , Mark Rutland , Linus Walleij , Dmitry Torokhov , Jacek Anaszewski , Pavel Machek , Lee Jones , Sebastian Reichel , Liam Girdwood , Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-input@vger.kernel.org, linux-leds@vger.kernel.org, linux-pm@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v4 05/10] mfd: max77650: new core mfd driver Date: Tue, 5 Feb 2019 10:12:32 +0100 Message-Id: <20190205091237.6448-6-brgl@bgdev.pl> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190205091237.6448-1-brgl@bgdev.pl> References: <20190205091237.6448-1-brgl@bgdev.pl> MIME-Version: 1.0 Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Bartosz Golaszewski Add the core mfd driver for max77650 PMIC. We define five sub-devices for which the drivers will be added in subsequent patches. Signed-off-by: Bartosz Golaszewski --- drivers/mfd/Kconfig | 11 ++ drivers/mfd/Makefile | 1 + drivers/mfd/max77650.c | 342 +++++++++++++++++++++++++++++++++++ include/linux/mfd/max77650.h | 59 ++++++ 4 files changed, 413 insertions(+) create mode 100644 drivers/mfd/max77650.c create mode 100644 include/linux/mfd/max77650.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 76f9909cf396..a80c3fe80fbe 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -734,6 +734,17 @@ config MFD_MAX77620 provides common support for accessing the device; additional drivers must be enabled in order to use the functionality of the device. +config MFD_MAX77650 + tristate "Maxim MAX77650/77651 PMIC Support" + depends on I2C + depends on OF || COMPILE_TEST + select MFD_CORE + select REGMAP_I2C + help + Say yes here to add support for Maxim Semiconductor MAX77650 and + MAX77651 Power Management ICs. This is the core multifunction + driver for interacting with the device. + config MFD_MAX77686 tristate "Maxim Semiconductor MAX77686/802 PMIC Support" depends on I2C diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 12980a4ad460..3b912a4015d1 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -151,6 +151,7 @@ obj-$(CONFIG_MFD_DA9150) += da9150-core.o obj-$(CONFIG_MFD_MAX14577) += max14577.o obj-$(CONFIG_MFD_MAX77620) += max77620.o +obj-$(CONFIG_MFD_MAX77650) += max77650.o obj-$(CONFIG_MFD_MAX77686) += max77686.o obj-$(CONFIG_MFD_MAX77693) += max77693.o obj-$(CONFIG_MFD_MAX77843) += max77843.o diff --git a/drivers/mfd/max77650.c b/drivers/mfd/max77650.c new file mode 100644 index 000000000000..7c6164f1fde4 --- /dev/null +++ b/drivers/mfd/max77650.c @@ -0,0 +1,342 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (C) 2018 BayLibre SAS +// Author: Bartosz Golaszewski +// +// Core MFD driver for MAXIM 77650/77651 charger/power-supply. + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define MAX77650_INT_GPI_F_MSK BIT(0) +#define MAX77650_INT_GPI_R_MSK BIT(1) +#define MAX77650_INT_GPI_MSK \ + (MAX77650_INT_GPI_F_MSK | MAX77650_INT_GPI_R_MSK) +#define MAX77650_INT_nEN_F_MSK BIT(2) +#define MAX77650_INT_nEN_R_MSK BIT(3) +#define MAX77650_INT_TJAL1_R_MSK BIT(4) +#define MAX77650_INT_TJAL2_R_MSK BIT(5) +#define MAX77650_INT_DOD_R_MSK BIT(6) + +#define MAX77650_INT_THM_MSK BIT(0) +#define MAX77650_INT_CHG_MSK BIT(1) +#define MAX77650_INT_CHGIN_MSK BIT(2) +#define MAX77650_INT_TJ_REG_MSK BIT(3) +#define MAX77650_INT_CHGIN_CTRL_MSK BIT(4) +#define MAX77650_INT_SYS_CTRL_MSK BIT(5) +#define MAX77650_INT_SYS_CNFG_MSK BIT(6) + +#define MAX77650_INT_GLBL_OFFSET 0 +#define MAX77650_INT_CHG_OFFSET 1 + +#define MAX77650_SBIA_LPM_MASK BIT(5) +#define MAX77650_SBIA_LPM_DISABLED 0x00 + +enum { + MAX77650_INT_GPI = 0, + MAX77650_INT_nEN_F, + MAX77650_INT_nEN_R, + MAX77650_INT_TJAL1_R, + MAX77650_INT_TJAL2_R, + MAX77650_INT_DOD_R, + MAX77650_INT_THM, + MAX77650_INT_CHG, + MAX77650_INT_CHGIN, + MAX77650_INT_TJ_REG, + MAX77650_INT_CHGIN_CTRL, + MAX77650_INT_SYS_CTRL, + MAX77650_INT_SYS_CNFG, +}; + +enum { + MAX77650_CELL_REGULATOR = 0, + MAX77650_CELL_CHARGER, + MAX77650_CELL_GPIO, + MAX77650_CELL_LED, + MAX77650_CELL_ONKEY, + MAX77650_NUM_CELLS, +}; + +struct max77650_irq_mapping { + int cell_num; + const int *irqs; + const char *const *irq_names; + unsigned int num_irqs; +}; + +static const int max77650_charger_irqs[] = { + MAX77650_INT_CHG, + MAX77650_INT_CHGIN, +}; + +static const int max77650_gpio_irqs[] = { + MAX77650_INT_GPI, +}; + +static const int max77650_onkey_irqs[] = { + MAX77650_INT_nEN_F, + MAX77650_INT_nEN_R, +}; + +static const char *const max77650_charger_irq_names[] = { + "CHG", + "CHGIN", +}; + +static const char *const max77650_gpio_irq_names[] = { + "GPI", +}; + +static const char *const max77650_onkey_irq_names[] = { + "nEN_F", + "nEN_R", +}; + +static const struct max77650_irq_mapping max77650_irq_mapping_table[] = { + { + .cell_num = MAX77650_CELL_CHARGER, + .irqs = max77650_charger_irqs, + .irq_names = max77650_charger_irq_names, + .num_irqs = ARRAY_SIZE(max77650_charger_irqs), + }, + { + .cell_num = MAX77650_CELL_GPIO, + .irqs = max77650_gpio_irqs, + .irq_names = max77650_gpio_irq_names, + .num_irqs = ARRAY_SIZE(max77650_gpio_irqs), + }, + { + .cell_num = MAX77650_CELL_ONKEY, + .irqs = max77650_onkey_irqs, + .irq_names = max77650_onkey_irq_names, + .num_irqs = ARRAY_SIZE(max77650_onkey_irqs), + }, +}; + +static const struct mfd_cell max77650_cells[] = { + [MAX77650_CELL_REGULATOR] = { + .name = "max77650-regulator", + .of_compatible = "maxim,max77650-regulator", + }, + [MAX77650_CELL_CHARGER] = { + .name = "max77650-charger", + .of_compatible = "maxim,max77650-charger", + }, + [MAX77650_CELL_GPIO] = { + .name = "max77650-gpio", + .of_compatible = "maxim,max77650-gpio", + }, + [MAX77650_CELL_LED] = { + .name = "max77650-led", + .of_compatible = "maxim,max77650-led", + }, + [MAX77650_CELL_ONKEY] = { + .name = "max77650-onkey", + .of_compatible = "maxim,max77650-onkey", + }, +}; + +static const struct regmap_irq max77650_irqs[] = { + [MAX77650_INT_GPI] = { + .reg_offset = MAX77650_INT_GLBL_OFFSET, + .mask = MAX77650_INT_GPI_MSK, + .type = { + .type_falling_val = MAX77650_INT_GPI_F_MSK, + .type_rising_val = MAX77650_INT_GPI_R_MSK, + .types_supported = IRQ_TYPE_EDGE_BOTH, + }, + }, + [MAX77650_INT_nEN_F] = { + .reg_offset = MAX77650_INT_GLBL_OFFSET, + .mask = MAX77650_INT_nEN_F_MSK, + }, + [MAX77650_INT_nEN_R] = { + .reg_offset = MAX77650_INT_GLBL_OFFSET, + .mask = MAX77650_INT_nEN_R_MSK, + }, + [MAX77650_INT_TJAL1_R] = { + .reg_offset = MAX77650_INT_GLBL_OFFSET, + .mask = MAX77650_INT_TJAL1_R_MSK, + }, + [MAX77650_INT_TJAL2_R] = { + .reg_offset = MAX77650_INT_GLBL_OFFSET, + .mask = MAX77650_INT_TJAL2_R_MSK, + }, + [MAX77650_INT_DOD_R] = { + .reg_offset = MAX77650_INT_GLBL_OFFSET, + .mask = MAX77650_INT_DOD_R_MSK, + }, + [MAX77650_INT_THM] = { + .reg_offset = MAX77650_INT_CHG_OFFSET, + .mask = MAX77650_INT_THM_MSK, + }, + [MAX77650_INT_CHG] = { + .reg_offset = MAX77650_INT_CHG_OFFSET, + .mask = MAX77650_INT_CHG_MSK, + }, + [MAX77650_INT_CHGIN] = { + .reg_offset = MAX77650_INT_CHG_OFFSET, + .mask = MAX77650_INT_CHGIN_MSK, + }, + [MAX77650_INT_TJ_REG] = { + .reg_offset = MAX77650_INT_CHG_OFFSET, + .mask = MAX77650_INT_TJ_REG_MSK, + }, + [MAX77650_INT_CHGIN_CTRL] = { + .reg_offset = MAX77650_INT_CHG_OFFSET, + .mask = MAX77650_INT_CHGIN_CTRL_MSK, + }, + [MAX77650_INT_SYS_CTRL] = { + .reg_offset = MAX77650_INT_CHG_OFFSET, + .mask = MAX77650_INT_SYS_CTRL_MSK, + }, + [MAX77650_INT_SYS_CNFG] = { + .reg_offset = MAX77650_INT_CHG_OFFSET, + .mask = MAX77650_INT_SYS_CNFG_MSK, + }, +}; + +static const struct regmap_irq_chip max77650_irq_chip = { + .name = "max77650-irq", + .irqs = max77650_irqs, + .num_irqs = ARRAY_SIZE(max77650_irqs), + .num_regs = 2, + .status_base = MAX77650_REG_INT_GLBL, + .mask_base = MAX77650_REG_INTM_GLBL, + .type_in_mask = true, + .type_invert = true, + .init_ack_masked = true, + .clear_on_unmask = true, +}; + +static const struct regmap_config max77650_regmap_config = { + .name = "max77650", + .reg_bits = 8, + .val_bits = 8, +}; + +static int max77650_setup_irqs(struct device *dev, struct mfd_cell *cells) +{ + const struct max77650_irq_mapping *mapping; + struct regmap_irq_chip_data *irq_data; + struct i2c_client *i2c; + struct mfd_cell *cell; + struct resource *res; + struct regmap *map; + int i, j, irq, rv; + + i2c = to_i2c_client(dev); + + map = dev_get_regmap(dev, NULL); + if (!map) + return -ENODEV; + + rv = devm_regmap_add_irq_chip(dev, map, i2c->irq, + IRQF_ONESHOT | IRQF_SHARED, -1, + &max77650_irq_chip, &irq_data); + if (rv) + return rv; + + for (i = 0; i < ARRAY_SIZE(max77650_irq_mapping_table); i++) { + mapping = &max77650_irq_mapping_table[i]; + cell = &cells[mapping->cell_num]; + + res = devm_kcalloc(dev, sizeof(*res), + mapping->num_irqs, GFP_KERNEL); + if (!res) + return -ENOMEM; + + cell->resources = res; + cell->num_resources = mapping->num_irqs; + + for (j = 0; j < mapping->num_irqs; j++) { + irq = regmap_irq_get_virq(irq_data, mapping->irqs[j]); + if (irq < 0) + return irq; + + res[j].start = res[j].end = irq; + res[j].flags = IORESOURCE_IRQ; + res[j].name = mapping->irq_names[j]; + } + } + + return 0; +} + +static int max77650_i2c_probe(struct i2c_client *i2c) +{ + struct device *dev = &i2c->dev; + struct mfd_cell *cells; + struct regmap *map; + unsigned int val; + int rv; + + map = devm_regmap_init_i2c(i2c, &max77650_regmap_config); + if (IS_ERR(map)) + return PTR_ERR(map); + + rv = regmap_read(map, MAX77650_REG_CID, &val); + if (rv) + return rv; + + switch (MAX77650_CID_BITS(val)) { + case MAX77650_CID_77650A: + case MAX77650_CID_77650C: + case MAX77650_CID_77651A: + case MAX77650_CID_77651B: + break; + default: + return -ENODEV; + } + + /* + * This IC has a low-power mode which reduces the quiescent current + * consumption to ~5.6uA but is only suitable for systems consuming + * less than ~2mA. Since this is not likely the case even on + * linux-based wearables - keep the chip in normal power mode. + */ + rv = regmap_update_bits(map, + MAX77650_REG_CNFG_GLBL, + MAX77650_SBIA_LPM_MASK, + MAX77650_SBIA_LPM_DISABLED); + if (rv) + return rv; + + cells = devm_kmemdup(dev, max77650_cells, + sizeof(max77650_cells), GFP_KERNEL); + if (!cells) + return -ENOMEM; + + rv = max77650_setup_irqs(dev, cells); + if (rv) + return rv; + + return devm_mfd_add_devices(dev, -1, cells, + MAX77650_NUM_CELLS, NULL, 0, NULL); +} + +static const struct of_device_id max77650_of_match[] = { + { .compatible = "maxim,max77650" }, + { } +}; +MODULE_DEVICE_TABLE(of, max77650_of_match); + +static struct i2c_driver max77650_i2c_driver = { + .driver = { + .name = "max77650", + .of_match_table = of_match_ptr(max77650_of_match), + }, + .probe_new = max77650_i2c_probe, +}; +module_i2c_driver(max77650_i2c_driver); + +MODULE_DESCRIPTION("MAXIM 77650/77651 multi-function core driver"); +MODULE_AUTHOR("Bartosz Golaszewski "); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/max77650.h b/include/linux/mfd/max77650.h new file mode 100644 index 000000000000..c809e211a8cd --- /dev/null +++ b/include/linux/mfd/max77650.h @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2018 BayLibre SAS + * Author: Bartosz Golaszewski + * + * Common definitions for MAXIM 77650/77651 charger/power-supply. + */ + +#ifndef MAX77650_H +#define MAX77650_H + +#include + +#define MAX77650_REG_INT_GLBL 0x00 +#define MAX77650_REG_INT_CHG 0x01 +#define MAX77650_REG_STAT_CHG_A 0x02 +#define MAX77650_REG_STAT_CHG_B 0x03 +#define MAX77650_REG_ERCFLAG 0x04 +#define MAX77650_REG_STAT_GLBL 0x05 +#define MAX77650_REG_INTM_GLBL 0x06 +#define MAX77650_REG_INTM_CHG 0x07 +#define MAX77650_REG_CNFG_GLBL 0x10 +#define MAX77650_REG_CID 0x11 +#define MAX77650_REG_CNFG_GPIO 0x12 +#define MAX77650_REG_CNFG_CHG_A 0x18 +#define MAX77650_REG_CNFG_CHG_B 0x19 +#define MAX77650_REG_CNFG_CHG_C 0x1a +#define MAX77650_REG_CNFG_CHG_D 0x1b +#define MAX77650_REG_CNFG_CHG_E 0x1c +#define MAX77650_REG_CNFG_CHG_F 0x1d +#define MAX77650_REG_CNFG_CHG_G 0x1e +#define MAX77650_REG_CNFG_CHG_H 0x1f +#define MAX77650_REG_CNFG_CHG_I 0x20 +#define MAX77650_REG_CNFG_SBB_TOP 0x28 +#define MAX77650_REG_CNFG_SBB0_A 0x29 +#define MAX77650_REG_CNFG_SBB0_B 0x2a +#define MAX77650_REG_CNFG_SBB1_A 0x2b +#define MAX77650_REG_CNFG_SBB1_B 0x2c +#define MAX77650_REG_CNFG_SBB2_A 0x2d +#define MAX77650_REG_CNFG_SBB2_B 0x2e +#define MAX77650_REG_CNFG_LDO_A 0x38 +#define MAX77650_REG_CNFG_LDO_B 0x39 +#define MAX77650_REG_CNFG_LED0_A 0x40 +#define MAX77650_REG_CNFG_LED1_A 0x41 +#define MAX77650_REG_CNFG_LED2_A 0x42 +#define MAX77650_REG_CNFG_LED0_B 0x43 +#define MAX77650_REG_CNFG_LED1_B 0x44 +#define MAX77650_REG_CNFG_LED2_B 0x45 +#define MAX77650_REG_CNFG_LED_TOP 0x46 + +#define MAX77650_CID_MASK GENMASK(3, 0) +#define MAX77650_CID_BITS(_reg) (_reg & MAX77650_CID_MASK) + +#define MAX77650_CID_77650A 0x03 +#define MAX77650_CID_77650C 0x0a +#define MAX77650_CID_77651A 0x06 +#define MAX77650_CID_77651B 0x08 + +#endif /* MAX77650_H */