From patchwork Mon Sep 4 14:43:38 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 9937289 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id B9F84601EB for ; Mon, 4 Sep 2017 14:45:01 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AC7BE2872E for ; Mon, 4 Sep 2017 14:45:01 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A02642880F; Mon, 4 Sep 2017 14:45:01 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham 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 D624B28807 for ; Mon, 4 Sep 2017 14:45:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753692AbdIDOok (ORCPT ); Mon, 4 Sep 2017 10:44:40 -0400 Received: from mx2.suse.de ([195.135.220.15]:59859 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753719AbdIDOnq (ORCPT ); Mon, 4 Sep 2017 10:43:46 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 2BBD0ABBC; Mon, 4 Sep 2017 14:43:44 +0000 (UTC) From: Takashi Iwai To: Lee Jones Cc: Darren Hart , Andy Shevchenko , "Rafael J . Wysocki" , Mika Westerberg , Johannes Stezenbach , Hans de Goede , Dmitry Torokhov , platform-driver-x86@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 1/3] mfd: Add support for Cherry Trail Dollar Cove TI PMIC Date: Mon, 4 Sep 2017 16:43:38 +0200 Message-Id: <20170904144340.27693-2-tiwai@suse.de> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20170904144340.27693-1-tiwai@suse.de> References: <20170904144340.27693-1-tiwai@suse.de> Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds the MFD driver for Dollar Cove (TI version) PMIC with ACPI INT33F5 that is found on some Intel Cherry Trail devices. The driver is based on the original work by Intel, found at: https://github.com/01org/ProductionKernelQuilts This is a minimal version for adding the basic resources. Currently, only ACPI PMIC opregion and the external power-button are used. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=193891 Reviewed-by: Mika Westerberg Reviewed-by: Andy Shevchenko Signed-off-by: Takashi Iwai --- v4->v5: * Minor coding-style fixes suggested by Lee * Put GPL text v3->v4: * no change for this patch v2->v3: * Rename dc_ti with chtdc_ti in all places * Driver/kconfig renames accordingly * Added acks by Andy and Mika v1->v2: * Minor cleanups as suggested by Andy drivers/mfd/Kconfig | 13 +++ drivers/mfd/Makefile | 1 + drivers/mfd/intel_soc_pmic_chtdc_ti.c | 184 ++++++++++++++++++++++++++++++++++ 3 files changed, 198 insertions(+) create mode 100644 drivers/mfd/intel_soc_pmic_chtdc_ti.c diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 94ad2c1c3d90..36e7d60f1314 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -496,6 +496,19 @@ config INTEL_SOC_PMIC_CHTWC available before any devices using it are probed. This option also causes the designware-i2c driver to be builtin for the same reason. +config INTEL_SOC_PMIC_CHTDC_TI + tristate "Support for Intel Cherry Trail Dollar Cove TI PMIC" + depends on GPIOLIB + depends on I2C + depends on ACPI + depends on X86 + select MFD_CORE + select REGMAP_I2C + select REGMAP_IRQ + help + Select this option for supporting Dollar Cove (TI version) PMIC + device that is found on some Intel Cherry Trail systems. + config MFD_INTEL_LPSS tristate select COMMON_CLK diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 080793b3fd0e..50ae64d2b22a 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -216,6 +216,7 @@ intel-soc-pmic-objs := intel_soc_pmic_core.o intel_soc_pmic_crc.o obj-$(CONFIG_INTEL_SOC_PMIC) += intel-soc-pmic.o obj-$(CONFIG_INTEL_SOC_PMIC_BXTWC) += intel_soc_pmic_bxtwc.o obj-$(CONFIG_INTEL_SOC_PMIC_CHTWC) += intel_soc_pmic_chtwc.o +obj-$(CONFIG_INTEL_SOC_PMIC_CHTDC_TI) += intel_soc_pmic_chtdc_ti.o obj-$(CONFIG_MFD_MT6397) += mt6397-core.o obj-$(CONFIG_MFD_ALTERA_A10SR) += altera-a10sr.o diff --git a/drivers/mfd/intel_soc_pmic_chtdc_ti.c b/drivers/mfd/intel_soc_pmic_chtdc_ti.c new file mode 100644 index 000000000000..861277c6580a --- /dev/null +++ b/drivers/mfd/intel_soc_pmic_chtdc_ti.c @@ -0,0 +1,184 @@ +/* + * Device access for Dollar Cove TI PMIC + * + * Copyright (c) 2014, Intel Corporation. + * Author: Ramakrishna Pallala + * + * Cleanup and forward-ported + * Copyright (c) 2017 Takashi Iwai + * + * 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 + +#define CHTDC_TI_IRQLVL1 0x01 +#define CHTDC_TI_MASK_IRQLVL1 0x02 + +/* Level 1 IRQs */ +enum { + CHTDC_TI_PWRBTN = 0, /* power button */ + CHTDC_TI_DIETMPWARN, /* thermal */ + CHTDC_TI_ADCCMPL, /* ADC */ + /* No IRQ 3 */ + CHTDC_TI_VBATLOW = 4, /* battery */ + CHTDC_TI_VBUSDET, /* power source */ + /* No IRQ 6 */ + CHTDC_TI_CCEOCAL = 7, /* battery */ +}; + +static struct resource power_button_resources[] = { + DEFINE_RES_IRQ(CHTDC_TI_PWRBTN), +}; + +static struct resource thermal_resources[] = { + DEFINE_RES_IRQ(CHTDC_TI_DIETMPWARN), +}; + +static struct resource adc_resources[] = { + DEFINE_RES_IRQ(CHTDC_TI_ADCCMPL), +}; + +static struct resource pwrsrc_resources[] = { + DEFINE_RES_IRQ(CHTDC_TI_VBUSDET), +}; + +static struct resource battery_resources[] = { + DEFINE_RES_IRQ(CHTDC_TI_VBATLOW), + DEFINE_RES_IRQ(CHTDC_TI_CCEOCAL), +}; + +static struct mfd_cell chtdc_ti_dev[] = { + { + .name = "chtdc_ti_pwrbtn", + .num_resources = ARRAY_SIZE(power_button_resources), + .resources = power_button_resources, + }, { + .name = "chtdc_ti_adc", + .num_resources = ARRAY_SIZE(adc_resources), + .resources = adc_resources, + }, { + .name = "chtdc_ti_thermal", + .num_resources = ARRAY_SIZE(thermal_resources), + .resources = thermal_resources, + }, { + .name = "chtdc_ti_pwrsrc", + .num_resources = ARRAY_SIZE(pwrsrc_resources), + .resources = pwrsrc_resources, + }, { + .name = "chtdc_ti_battery", + .num_resources = ARRAY_SIZE(battery_resources), + .resources = battery_resources, + }, + { .name = "chtdc_ti_region", }, +}; + +static const struct regmap_config chtdc_ti_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 128, + .cache_type = REGCACHE_NONE, +}; + +static const struct regmap_irq chtdc_ti_irqs[] = { + REGMAP_IRQ_REG(CHTDC_TI_PWRBTN, 0, BIT(CHTDC_TI_PWRBTN)), + REGMAP_IRQ_REG(CHTDC_TI_DIETMPWARN, 0, BIT(CHTDC_TI_DIETMPWARN)), + REGMAP_IRQ_REG(CHTDC_TI_ADCCMPL, 0, BIT(CHTDC_TI_ADCCMPL)), + REGMAP_IRQ_REG(CHTDC_TI_VBATLOW, 0, BIT(CHTDC_TI_VBATLOW)), + REGMAP_IRQ_REG(CHTDC_TI_VBUSDET, 0, BIT(CHTDC_TI_VBUSDET)), + REGMAP_IRQ_REG(CHTDC_TI_CCEOCAL, 0, BIT(CHTDC_TI_CCEOCAL)), +}; + +static const struct regmap_irq_chip chtdc_ti_irq_chip = { + .name = KBUILD_MODNAME, + .irqs = chtdc_ti_irqs, + .num_irqs = ARRAY_SIZE(chtdc_ti_irqs), + .num_regs = 1, + .status_base = CHTDC_TI_IRQLVL1, + .mask_base = CHTDC_TI_MASK_IRQLVL1, + .ack_base = CHTDC_TI_IRQLVL1, +}; + +static int chtdc_ti_probe(struct i2c_client *i2c) +{ + struct device *dev = &i2c->dev; + struct intel_soc_pmic *pmic; + int ret; + + pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL); + if (!pmic) + return -ENOMEM; + + i2c_set_clientdata(i2c, pmic); + + pmic->regmap = devm_regmap_init_i2c(i2c, &chtdc_ti_regmap_config); + if (IS_ERR(pmic->regmap)) + return PTR_ERR(pmic->regmap); + pmic->irq = i2c->irq; + + ret = devm_regmap_add_irq_chip(dev, pmic->regmap, pmic->irq, + IRQF_ONESHOT, 0, + &chtdc_ti_irq_chip, + &pmic->irq_chip_data); + if (ret) + return ret; + + return devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE, chtdc_ti_dev, + ARRAY_SIZE(chtdc_ti_dev), NULL, 0, + regmap_irq_get_domain(pmic->irq_chip_data)); +} + +static void chtdc_ti_shutdown(struct i2c_client *i2c) +{ + struct intel_soc_pmic *pmic = i2c_get_clientdata(i2c); + + disable_irq(pmic->irq); +} + +static int __maybe_unused chtdc_ti_suspend(struct device *dev) +{ + struct intel_soc_pmic *pmic = dev_get_drvdata(dev); + + disable_irq(pmic->irq); + + return 0; +} + +static int __maybe_unused chtdc_ti_resume(struct device *dev) +{ + struct intel_soc_pmic *pmic = dev_get_drvdata(dev); + + enable_irq(pmic->irq); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(chtdc_ti_pm_ops, chtdc_ti_suspend, chtdc_ti_resume); + +static const struct acpi_device_id chtdc_ti_acpi_ids[] = { + { "INT33F5" }, + { }, +}; +MODULE_DEVICE_TABLE(acpi, chtdc_ti_acpi_ids); + +static struct i2c_driver chtdc_ti_i2c_driver = { + .driver = { + .name = "intel_soc_pmic_chtdc_ti", + .pm = &chtdc_ti_pm_ops, + .acpi_match_table = chtdc_ti_acpi_ids, + }, + .probe_new = chtdc_ti_probe, + .shutdown = chtdc_ti_shutdown, +}; +module_i2c_driver(chtdc_ti_i2c_driver); + +MODULE_DESCRIPTION("I2C driver for Intel SoC Dollar Cove TI PMIC"); +MODULE_LICENSE("GPL v2");