From patchwork Wed Mar 20 10:25:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bhargav Raviprakash X-Patchwork-Id: 781421 Received: from esa1.ltts.com (unknown [118.185.121.105]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 96F0344377; Wed, 20 Mar 2024 10:26:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=118.185.121.105 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710930389; cv=none; b=jRUsaexRRdZ9ClrZEDlYuW4wpERV/QJa+07+MveJ8/su2VHJbXjSWT/vLPSk1Z0OcspW/LWc9iwE2u0oOOHZt1gMZJjgvUXQguegdKg/kXTS7PbzpA/Yy9Af+D4S+4RprfgfkAiEHJ/PvCqHiXTvY2dUWz2c4xXQ+PJm84Zz37E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710930389; c=relaxed/simple; bh=rR36l+HbAkxuwygrZ7h0SMEBzbS84LHP6mXAk0U3GqE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=D/twElZH7vyDoY9Bk7z2nZ3Wmu13RII74TlG2aHCQYw+OirmErHRk03xQx04po7Q8tZdpzWTGpH+jctWfiUJgWg4fjQDvr9GpKUMjGby61kjyFXjWQiIp+U4DOEKK5eaPgMGd+3VT7UkuRkHE81L+xCj+DjJNsERpQJ/PioDokA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ltts.com; spf=pass smtp.mailfrom=ltts.com; arc=none smtp.client-ip=118.185.121.105 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ltts.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ltts.com IronPort-SDR: KVTJjYLS7YK4bwHvmsqnlERMgsjqi5NylK4r7+330iZ3LCeaB9YQWVzgUpUtPIRF0PLELNLEcv QnR6gGNbt1pw== Received: from unknown (HELO localhost.localdomain) ([192.168.34.55]) by esa1.ltts.com with ESMTP; 20 Mar 2024 15:56:19 +0530 From: Bhargav Raviprakash To: linux-kernel@vger.kernel.org Cc: m.nirmaladevi@ltts.com, lee@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, jpanis@baylibre.com, devicetree@vger.kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, lgirdwood@gmail.com, broonie@kernel.org, linus.walleij@linaro.org, linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, nm@ti.com, vigneshr@ti.com, kristo@kernel.org, eblanc@baylibre.com, Bhargav Raviprakash Subject: [PATCH v4 08/11] misc: tps6594-pfsm: Add TI TPS65224 PMIC PFSM Date: Wed, 20 Mar 2024 15:55:56 +0530 Message-Id: <20240320102559.464981-9-bhargav.r@ltts.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240320102559.464981-1-bhargav.r@ltts.com> References: <20240320102559.464981-1-bhargav.r@ltts.com> Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add support for TPS65224 PFSM in the TPS6594 PFSM driver as they share significant functionality. Signed-off-by: Bhargav Raviprakash Acked-by: Julien Panis --- drivers/misc/tps6594-pfsm.c | 48 +++++++++++++++++++++++++++---------- 1 file changed, 35 insertions(+), 13 deletions(-) diff --git a/drivers/misc/tps6594-pfsm.c b/drivers/misc/tps6594-pfsm.c index 88dcac814..9bcca1856 100644 --- a/drivers/misc/tps6594-pfsm.c +++ b/drivers/misc/tps6594-pfsm.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* - * PFSM (Pre-configurable Finite State Machine) driver for TI TPS6594/TPS6593/LP8764 PMICs + * PFSM (Pre-configurable Finite State Machine) driver for TI TPS65224/TPS6594/TPS6593/LP8764 PMICs * * Copyright (C) 2023 BayLibre Incorporated - https://www.baylibre.com/ */ @@ -39,10 +39,12 @@ * * @miscdev: misc device infos * @regmap: regmap for accessing the device registers + * @chip_id: chip identifier of the device */ struct tps6594_pfsm { struct miscdevice miscdev; struct regmap *regmap; + unsigned long chip_id; }; static ssize_t tps6594_pfsm_read(struct file *f, char __user *buf, @@ -133,21 +135,29 @@ static long tps6594_pfsm_ioctl(struct file *f, unsigned int cmd, unsigned long a struct tps6594_pfsm *pfsm = TPS6594_FILE_TO_PFSM(f); struct pmic_state_opt state_opt; void __user *argp = (void __user *)arg; + unsigned int regmap_reg, mask; int ret = -ENOIOCTLCMD; switch (cmd) { case PMIC_GOTO_STANDBY: - /* Disable LP mode */ - ret = regmap_clear_bits(pfsm->regmap, TPS6594_REG_RTC_CTRL_2, - TPS6594_BIT_LP_STANDBY_SEL); - if (ret) - return ret; + /* Disable LP mode on TPS6594 Family PMIC */ + if (pfsm->chip_id != TPS65224) { + ret = regmap_clear_bits(pfsm->regmap, TPS6594_REG_RTC_CTRL_2, + TPS6594_BIT_LP_STANDBY_SEL); + + if (ret) + return ret; + } /* Force trigger */ ret = regmap_write_bits(pfsm->regmap, TPS6594_REG_FSM_I2C_TRIGGERS, TPS6594_BIT_TRIGGER_I2C(0), TPS6594_BIT_TRIGGER_I2C(0)); break; case PMIC_GOTO_LP_STANDBY: + /* TPS65224 does not support LP STANDBY */ + if (pfsm->chip_id == TPS65224) + return ret; + /* Enable LP mode */ ret = regmap_set_bits(pfsm->regmap, TPS6594_REG_RTC_CTRL_2, TPS6594_BIT_LP_STANDBY_SEL); @@ -169,6 +179,10 @@ static long tps6594_pfsm_ioctl(struct file *f, unsigned int cmd, unsigned long a TPS6594_BIT_NSLEEP1B | TPS6594_BIT_NSLEEP2B); break; case PMIC_SET_MCU_ONLY_STATE: + /* TPS65224 does not support MCU_ONLY_STATE */ + if (pfsm->chip_id == TPS65224) + return ret; + if (copy_from_user(&state_opt, argp, sizeof(state_opt))) return -EFAULT; @@ -192,14 +206,20 @@ static long tps6594_pfsm_ioctl(struct file *f, unsigned int cmd, unsigned long a return -EFAULT; /* Configure wake-up destination */ + if (pfsm->chip_id == TPS65224) { + regmap_reg = TPS65224_REG_STARTUP_CTRL; + mask = TPS65224_MASK_STARTUP_DEST; + } else { + regmap_reg = TPS6594_REG_RTC_CTRL_2; + mask = TPS6594_MASK_STARTUP_DEST; + } + if (state_opt.mcu_only_startup_dest) - ret = regmap_write_bits(pfsm->regmap, TPS6594_REG_RTC_CTRL_2, - TPS6594_MASK_STARTUP_DEST, - TPS6594_STARTUP_DEST_MCU_ONLY); + ret = regmap_write_bits(pfsm->regmap, regmap_reg, + mask, TPS6594_STARTUP_DEST_MCU_ONLY); else - ret = regmap_write_bits(pfsm->regmap, TPS6594_REG_RTC_CTRL_2, - TPS6594_MASK_STARTUP_DEST, - TPS6594_STARTUP_DEST_ACTIVE); + ret = regmap_write_bits(pfsm->regmap, regmap_reg, + mask, TPS6594_STARTUP_DEST_ACTIVE); if (ret) return ret; @@ -211,7 +231,8 @@ static long tps6594_pfsm_ioctl(struct file *f, unsigned int cmd, unsigned long a /* Modify NSLEEP1-2 bits */ ret = regmap_clear_bits(pfsm->regmap, TPS6594_REG_FSM_NSLEEP_TRIGGERS, - TPS6594_BIT_NSLEEP2B); + pfsm->chip_id == TPS65224 ? + TPS6594_BIT_NSLEEP1B : TPS6594_BIT_NSLEEP2B); break; } @@ -262,6 +283,7 @@ static int tps6594_pfsm_probe(struct platform_device *pdev) tps->chip_id, tps->reg); pfsm->miscdev.fops = &tps6594_pfsm_fops; pfsm->miscdev.parent = dev->parent; + pfsm->chip_id = tps->chip_id; for (i = 0 ; i < pdev->num_resources ; i++) { irq = platform_get_irq_byname(pdev, pdev->resource[i].name);