From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 20 Dec 2023 11:48:54 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1rFu8E-0060tV-1k for lore@lore.pengutronix.de; Wed, 20 Dec 2023 11:48:54 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rFu8D-00063Y-W8 for lore@pengutronix.de; Wed, 20 Dec 2023 11:48:54 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=qAPdo1KyQGiBJRQ9p55d97RS9pb4noIh2L5aQtXeuSI=; b=2QuFZT5upFz6evjRWVlUncq91e v/8uZn7///c7a4MerKJoUs7+NTN2XgNbPt5BjkNp2s6+dssXqja9504J4borCV6LvpaCisUtAS+ik VNa4uL/UkE9kymgGhsLPlvPyKjcWXfWyX27pDHe7O1ft13+8LhIvKh2jdwNtkKF3kW7ZW0ltPLIIg 5TaiyI0PBEHQJOM3P2LaAbQge+oCamjdFbwPlyqjlaVnDwLn6fg3k5T0LhL2Ic9dlBBKxMkdivEZ5 h4ZOaC+pISFFbw5lSY1UZXtGaGie8qVDjvxdhcKtrrw1FGAV7V1z3bzceCfO0Xvg4gSacyopVsLof Tynr4kPg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rFu76-00Gz0s-2s; Wed, 20 Dec 2023 10:47:44 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1rFu73-00Gz0X-3C for barebox@lists.infradead.org; Wed, 20 Dec 2023 10:47:43 +0000 Received: from dude04.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::ac]) by metis.whiteo.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1rFu72-0005qH-PN; Wed, 20 Dec 2023 11:47:40 +0100 From: Bastian Krause To: barebox@lists.infradead.org Cc: Ahmad Fatoum , Bastian Krause Date: Wed, 20 Dec 2023 11:47:39 +0100 Message-Id: <20231220104739.10700-1-bst@pengutronix.de> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231220_024742_050335_E6BA6501 X-CRM114-Status: UNSURE ( 8.60 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.2 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE, T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH v2] i2c: add pmic_reg_read() for PBL use X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) Add a common PMIC read function to PBL which allows easy porting of U-Boot's pmic_reg_read() in lowlevel board code. Signed-off-by: Bastian Krause --- Changes since (implicit) v1: - make function static inline as suggested by Ahmad - change void *buf to u32 *val to resemble's U-Boot's pmic_reg_read() as suggested by Ahmad --- include/pbl/pmic.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/include/pbl/pmic.h b/include/pbl/pmic.h index 0f882c5649d..4eeee31d46c 100644 --- a/include/pbl/pmic.h +++ b/include/pbl/pmic.h @@ -9,6 +9,30 @@ struct pmic_config { u8 val; }; +static inline void pmic_reg_read(struct pbl_i2c *i2c, int addr, u8 reg, u32 *val) +{ + int ret; + u8 buf[1]; + struct i2c_msg msg[] = { + { + .addr = addr, + .buf = ®, + .len = 1, + }, { + .addr = addr, + .flags = I2C_M_RD, + .buf = buf, + .len = 1, + }, + }; + + ret = pbl_i2c_xfer(i2c, msg, ARRAY_SIZE(msg)); + if (ret != ARRAY_SIZE(msg)) + pr_err("Failed to read from pmic@%x: %d\n", addr, ret); + + *val = buf[0]; +} + static void pmic_reg_write(struct pbl_i2c *i2c, int addr, u8 reg, u8 val) { int ret; -- 2.39.2