From patchwork Fri May 5 17:25:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 13232860 X-Patchwork-Delegate: geert@linux-m68k.org 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 A4422C77B7C for ; Fri, 5 May 2023 17:25:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229795AbjEERZq (ORCPT ); Fri, 5 May 2023 13:25:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57758 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231501AbjEERZo (ORCPT ); Fri, 5 May 2023 13:25:44 -0400 Received: from relmlie5.idc.renesas.com (relmlor1.renesas.com [210.160.252.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 490A216088 for ; Fri, 5 May 2023 10:25:43 -0700 (PDT) X-IronPort-AV: E=Sophos;i="5.99,252,1677510000"; d="scan'208";a="158275151" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 06 May 2023 02:25:43 +0900 Received: from localhost.localdomain (unknown [10.226.92.145]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 93C734073785; Sat, 6 May 2023 02:25:40 +0900 (JST) From: Biju Das To: Lee Jones Cc: Biju Das , Geert Uytterhoeven , Alessandro Zummo , Alexandre Belloni , Magnus Damm , linux-renesas-soc@vger.kernel.org, Fabrizio Castro Subject: [PATCH v2 2/5] mfd: Add Renesas PMIC RAA215300 driver Date: Fri, 5 May 2023 18:25:27 +0100 Message-Id: <20230505172530.357455-3-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230505172530.357455-1-biju.das.jz@bp.renesas.com> References: <20230505172530.357455-1-biju.das.jz@bp.renesas.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org The RAA215300 is a 9-channel PMIC that consists of * Internally compensated regulators * built-in Real Time Clock (RTC) * 32kHz crystal oscillator * coin cell battery charger The RTC on RAA215300 is similar to the IP found in the ISL1208. The existing driver for the ISL1208 works for this PMIC too, however the RAA215300 exposes two devices via I2C, one for the RTC IP, and one for everything else. The RTC IP has to be enabled by the other I2C device, therefore this driver is necessary to get the RTC to work. Add support for basic PMIC RAA215300 driver. Support for enabling RTC and sharing PMIC version to the RTC driver done in the subsequent patch. Signed-off-by: Biju Das --- RFC->V2: * Dropped MODULE_SOFTDEP from the driver as it is added in RTC platform driver. --- drivers/mfd/Kconfig | 7 ++++ drivers/mfd/Makefile | 2 ++ drivers/mfd/raa215300.c | 74 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 83 insertions(+) create mode 100644 drivers/mfd/raa215300.c diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index e90463c4441c..9071b0f27b62 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -311,6 +311,13 @@ config MFD_CS47L92 help Support for Cirrus Logic CS42L92, CS47L92 and CS47L93 Smart Codecs +config PMIC_RAA215300 + tristate "Renesas RAA215300 driver" + select REGMAP_I2C + depends on I2C + help + Support for the Renesas RAA215300 PMIC. + config PMIC_DA903X bool "Dialog Semiconductor DA9030/DA9034 PMIC Support" depends on I2C=y diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 1d2392f06f78..d9c601120bfd 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -126,6 +126,8 @@ ifeq ($(CONFIG_SA1100_ASSABET),y) obj-$(CONFIG_MCP_UCB1200) += ucb1x00-assabet.o endif +obj-$(CONFIG_PMIC_RAA215300) += raa215300.o + obj-$(CONFIG_PMIC_DA903X) += da903x.o obj-$(CONFIG_PMIC_DA9052) += da9052-irq.o diff --git a/drivers/mfd/raa215300.c b/drivers/mfd/raa215300.c new file mode 100644 index 000000000000..5cdd3213e99c --- /dev/null +++ b/drivers/mfd/raa215300.c @@ -0,0 +1,74 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Renesas RAA215300 PMIC driver + * + * Copyright (C) 2023 Renesas Electronics Corporation + */ + +#include +#include +#include +#include +#include + +#define RAA215300_REG_BLOCK_EN 0x6c +#define RAA215300_HW_REV 0xf8 + +#define RAA215300_REG_BLOCK_EN_RTC_EN BIT(6) + +static bool raa215300_is_volatile_reg(struct device *dev, unsigned int reg) +{ + return true; +} + +static const struct regmap_config raa215300_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0xff, + .volatile_reg = raa215300_is_volatile_reg, + .cache_type = REGCACHE_FLAT, +}; + +static int raa215300_i2c_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + unsigned int pmic_version; + struct regmap *regmap; + int ret; + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) + return -EOPNOTSUPP; + + regmap = devm_regmap_init_i2c(client, &raa215300_regmap_config); + if (IS_ERR(regmap)) + return dev_err_probe(dev, PTR_ERR(regmap), + "regmap i2c init failed\n"); + + ret = regmap_read(regmap, RAA215300_HW_REV, &pmic_version); + if (ret < 0) + return dev_err_probe(dev, ret, "HW rev read failed\n"); + + dev_dbg(dev, "RAA215300 PMIC version 0x%04x\n", pmic_version); + + return 0; +} + +static const struct of_device_id raa215300_dt_match[] = { + { .compatible = "renesas,raa215300" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, raa215300_dt_match); + +static struct i2c_driver raa215300_i2c_driver = { + .driver = { + .name = "raa215300", + .of_match_table = raa215300_dt_match, + }, + .probe_new = raa215300_i2c_probe, +}; +module_i2c_driver(raa215300_i2c_driver); + +MODULE_DESCRIPTION("Renesas RAA215300 PMIC driver"); +MODULE_AUTHOR("Fabrizio Castro "); +MODULE_AUTHOR("Biju Das "); +MODULE_LICENSE("GPL");