From patchwork Mon Sep 4 14:43:40 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 9937277 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 B820C603F9 for ; Mon, 4 Sep 2017 14:44:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AB6AF2873E for ; Mon, 4 Sep 2017 14:44:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9FE492880C; Mon, 4 Sep 2017 14:44:03 +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=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 4C81A28834 for ; Mon, 4 Sep 2017 14:43:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753775AbdIDOnq (ORCPT ); Mon, 4 Sep 2017 10:43:46 -0400 Received: from mx2.suse.de ([195.135.220.15]:59870 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753727AbdIDOnq (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 46736ABDC; 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 3/3] ACPI / PMIC: Add opregion driver for Intel Dollar Cove TI PMIC Date: Mon, 4 Sep 2017 16:43:40 +0200 Message-Id: <20170904144340.27693-4-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 opregion driver for Dollar Cove TI PMIC on Intel Cherry Trail devices. The patch is based on the original work by Intel, found at: https://github.com/01org/ProductionKernelQuilts with many cleanups and rewrites. The driver is currently provided only as built-in to follow other PMIC opregion drivers convention. The re-enumeration of devices at probe is required for fixing the issues on HP x2 210 G2. See bug#195689. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=193891 Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=195689 Reviewed-by: Mika Westerberg Reviewed-by: Andy Shevchenko Signed-off-by: Takashi Iwai --- v4->v5: * no change in this driver v3->v4: * Rename dc_ti with chtdc_ti in all places v2->v3: * Rename dc_ti with chtdc_ti in all places * Driver/kconfig renames accordingly * Constification * Added acks by Andy and Mika v1->v2: * get_raw_temp cleanup in opregion driver, mention about register endianess drivers/acpi/Kconfig | 6 ++ drivers/acpi/Makefile | 1 + drivers/acpi/pmic/intel_pmic_chtdc_ti.c | 137 ++++++++++++++++++++++++++++++++ 3 files changed, 144 insertions(+) create mode 100644 drivers/acpi/pmic/intel_pmic_chtdc_ti.c diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 1ce52f84dc23..176fae699891 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -521,6 +521,12 @@ config CHT_WC_PMIC_OPREGION help This config adds ACPI operation region support for CHT Whiskey Cove PMIC. +config CHT_DC_TI_PMIC_OPREGION + bool "ACPI operation region support for Dollar Cove TI PMIC" + depends on INTEL_SOC_PMIC_CHTDC_TI + help + This config adds ACPI operation region support for Dollar Cove TI PMIC. + endif config ACPI_CONFIGFS diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index b1aacfc62b1f..cd228822d4a3 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -103,6 +103,7 @@ obj-$(CONFIG_CRC_PMIC_OPREGION) += pmic/intel_pmic_crc.o obj-$(CONFIG_XPOWER_PMIC_OPREGION) += pmic/intel_pmic_xpower.o obj-$(CONFIG_BXT_WC_PMIC_OPREGION) += pmic/intel_pmic_bxtwc.o obj-$(CONFIG_CHT_WC_PMIC_OPREGION) += pmic/intel_pmic_chtwc.o +obj-$(CONFIG_CHT_DC_TI_PMIC_OPREGION) += pmic/intel_pmic_chtdc_ti.o obj-$(CONFIG_ACPI_CONFIGFS) += acpi_configfs.o diff --git a/drivers/acpi/pmic/intel_pmic_chtdc_ti.c b/drivers/acpi/pmic/intel_pmic_chtdc_ti.c new file mode 100644 index 000000000000..109c1e9c9c7a --- /dev/null +++ b/drivers/acpi/pmic/intel_pmic_chtdc_ti.c @@ -0,0 +1,137 @@ +/* + * Dollar Cove TI PMIC operation region driver + * Copyright (C) 2014 Intel Corporation. All rights reserved. + * + * Rewritten and cleaned up + * Copyright (C) 2017 Takashi Iwai + */ + +#include +#include +#include +#include +#include "intel_pmic.h" + +/* registers stored in 16bit BE (high:low, total 10bit) */ +#define CHTDC_TI_VBAT 0x54 +#define CHTDC_TI_DIETEMP 0x56 +#define CHTDC_TI_BPTHERM 0x58 +#define CHTDC_TI_GPADC 0x5a + +static struct pmic_table chtdc_ti_power_table[] = { + { .address = 0x00, .reg = 0x41 }, + { .address = 0x04, .reg = 0x42 }, + { .address = 0x08, .reg = 0x43 }, + { .address = 0x0c, .reg = 0x45 }, + { .address = 0x10, .reg = 0x46 }, + { .address = 0x14, .reg = 0x47 }, + { .address = 0x18, .reg = 0x48 }, + { .address = 0x1c, .reg = 0x49 }, + { .address = 0x20, .reg = 0x4a }, + { .address = 0x24, .reg = 0x4b }, + { .address = 0x28, .reg = 0x4c }, + { .address = 0x2c, .reg = 0x4d }, + { .address = 0x30, .reg = 0x4e }, +}; + +static struct pmic_table chtdc_ti_thermal_table[] = { + { + .address = 0x00, + .reg = CHTDC_TI_GPADC + }, + { + .address = 0x0c, + .reg = CHTDC_TI_GPADC + }, + /* TMP2 -> SYSTEMP */ + { + .address = 0x18, + .reg = CHTDC_TI_GPADC + }, + /* TMP3 -> BPTHERM */ + { + .address = 0x24, + .reg = CHTDC_TI_BPTHERM + }, + { + .address = 0x30, + .reg = CHTDC_TI_GPADC + }, + /* TMP5 -> DIETEMP */ + { + .address = 0x3c, + .reg = CHTDC_TI_DIETEMP + }, +}; + +static int chtdc_ti_pmic_get_power(struct regmap *regmap, int reg, int bit, + u64 *value) +{ + int data; + + if (regmap_read(regmap, reg, &data)) + return -EIO; + + *value = data & 1; + return 0; +} + +static int chtdc_ti_pmic_update_power(struct regmap *regmap, int reg, int bit, + bool on) +{ + return regmap_update_bits(regmap, reg, 1, on); +} + +static int chtdc_ti_pmic_get_raw_temp(struct regmap *regmap, int reg) +{ + u8 buf[2]; + + if (regmap_bulk_read(regmap, reg, buf, 2)) + return -EIO; + + /* stored in big-endian */ + return ((buf[0] & 0x03) << 8) | buf[1]; +} + +static struct intel_pmic_opregion_data chtdc_ti_pmic_opregion_data = { + .get_power = chtdc_ti_pmic_get_power, + .update_power = chtdc_ti_pmic_update_power, + .get_raw_temp = chtdc_ti_pmic_get_raw_temp, + .power_table = chtdc_ti_power_table, + .power_table_count = ARRAY_SIZE(chtdc_ti_power_table), + .thermal_table = chtdc_ti_thermal_table, + .thermal_table_count = ARRAY_SIZE(chtdc_ti_thermal_table), +}; + +static int chtdc_ti_pmic_opregion_probe(struct platform_device *pdev) +{ + struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent); + int err; + + err = intel_pmic_install_opregion_handler(&pdev->dev, + ACPI_HANDLE(pdev->dev.parent), pmic->regmap, + &chtdc_ti_pmic_opregion_data); + if (err < 0) + return err; + + /* Re-enumerate devices depending on PMIC */ + acpi_walk_dep_device_list(ACPI_HANDLE(pdev->dev.parent)); + return 0; +} + +static const struct platform_device_id chtdc_ti_pmic_opregion_id_table[] = { + { .name = "chtdc_ti_region" }, + {}, +}; + +static struct platform_driver chtdc_ti_pmic_opregion_driver = { + .probe = chtdc_ti_pmic_opregion_probe, + .driver = { + .name = "cht_dollar_cove_ti_pmic", + }, + .id_table = chtdc_ti_pmic_opregion_id_table, +}; +module_platform_driver(chtdc_ti_pmic_opregion_driver); + +MODULE_DESCRIPTION("Dollar Cove TI PMIC opregion driver"); +MODULE_LICENSE("GPL v2");