From nobody Wed Dec 17 12:46:57 2025 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 6DB87C10DAA for ; Mon, 27 Nov 2023 22:22:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234398AbjK0WWc (ORCPT ); Mon, 27 Nov 2023 17:22:32 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36726 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233800AbjK0WWI (ORCPT ); Mon, 27 Nov 2023 17:22:08 -0500 Received: from mail.andi.de1.cc (mail.andi.de1.cc [IPv6:2a02:c205:3004:2154::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 07F834C25; Mon, 27 Nov 2023 14:19:22 -0800 (PST) Received: from p200301077700a9001a3da2fffebfd33a.dip0.t-ipconnect.de ([2003:107:7700:a900:1a3d:a2ff:febf:d33a] helo=aktux) by mail.andi.de1.cc with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1r7jwg-006my1-Ra; Mon, 27 Nov 2023 23:19:14 +0100 Received: from andi by aktux with local (Exim 4.96) (envelope-from ) id 1r7jwg-000kAX-1y; Mon, 27 Nov 2023 23:19:14 +0100 From: Andreas Kemnade To: lee@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, bcousson@baylibre.com, tony@atomide.com, andreas@kemnade.info, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org Subject: [PATCH v2 2/6] twl-core: add power off implementation for twl603x Date: Mon, 27 Nov 2023 23:19:03 +0100 Message-Id: <20231127221907.177442-3-andreas@kemnade.info> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231127221907.177442-1-andreas@kemnade.info> References: <20231127221907.177442-1-andreas@kemnade.info> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" If the system-power-controller property is there, enable power off. Implementation is based on a Linux v3.0 vendor kernel. Signed-off-by: Andreas Kemnade --- drivers/mfd/twl-core.c | 34 ++++++++++++++++++++++++++++++++++ include/linux/mfd/twl.h | 1 + 2 files changed, 35 insertions(+) diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c index 6e384a79e3418..54482d5d8888b 100644 --- a/drivers/mfd/twl-core.c +++ b/drivers/mfd/twl-core.c @@ -687,6 +687,31 @@ static void twl_remove(struct i2c_client *client) twl_priv->ready =3D false; } =20 +static void twl6030_power_off(void) +{ +#define APP_DEVOFF (1<<0) +#define CON_DEVOFF (1<<1) +#define MOD_DEVOFF (1<<2) + + int err; + u8 val; + + err =3D twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &val, + TWL6030_PHOENIX_DEV_ON); + if (err) { + pr_err("I2C error %d reading PHOENIX_DEV_ON\n", err); + return; + } + + val |=3D APP_DEVOFF | CON_DEVOFF | MOD_DEVOFF; + + err =3D twl_i2c_write_u8(TWL_MODULE_PM_MASTER, val, + TWL6030_PHOENIX_DEV_ON); + if (err) + pr_err("TWL6030 Unable to power off\n"); +} + + static struct of_dev_auxdata twl_auxdata_lookup[] =3D { OF_DEV_AUXDATA("ti,twl4030-gpio", 0, "twl4030-gpio", NULL), { /* sentinel */ }, @@ -852,6 +877,15 @@ twl_probe(struct i2c_client *client) goto free; } =20 + if (twl_class_is_6030()) { + if (of_device_is_system_power_controller(client->dev.of_node)) { + if (!pm_power_off) + pm_power_off =3D twl6030_power_off; + else + dev_warn(&client->dev, "Poweroff callback already assigned\n"); + } + } + status =3D of_platform_populate(node, NULL, twl_auxdata_lookup, &client->dev); =20 diff --git a/include/linux/mfd/twl.h b/include/linux/mfd/twl.h index c062d91a67d92..85dc406173dba 100644 --- a/include/linux/mfd/twl.h +++ b/include/linux/mfd/twl.h @@ -461,6 +461,7 @@ static inline int twl6030_mmc_card_detect(struct device= *dev, int slot) =20 #define TWL4030_PM_MASTER_GLOBAL_TST 0xb6 =20 +#define TWL6030_PHOENIX_DEV_ON 0x06 /*----------------------------------------------------------------------*/ =20 /* Power bus message definitions */ --=20 2.39.2