From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 09 Aug 2023 10:48:53 +0200 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qTesA-00DYEp-6w for lore@lore.pengutronix.de; Wed, 09 Aug 2023 10:48:53 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qTes8-0008CF-7B for lore@pengutronix.de; Wed, 09 Aug 2023 10:48:52 +0200 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: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; 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Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0 Content-Language: en-US To: Marc Kleine-Budde , barebox@lists.infradead.org Cc: afa@pengutronix.de References: <20230809-phytec-som-imx8mm-v4-0-b9d4759582d8@pengutronix.de> <20230809-phytec-som-imx8mm-v4-1-b9d4759582d8@pengutronix.de> From: Ahmad Fatoum In-Reply-To: <20230809-phytec-som-imx8mm-v4-1-b9d4759582d8@pengutronix.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230809_014731_185240_AFF78C13 X-CRM114-Status: GOOD ( 21.21 ) 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.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-6.9 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH v4 1/3] i2c: add 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.ext.pengutronix.de) On 09.08.23 09:26, Marc Kleine-Budde wrote: > Add a small helper to read a single page of EEPROM data. > > Signed-off-by: Marc Kleine-Budde Reviewed-by: Ahmad Fatoum > --- > include/pbl/eeprom.h | 34 ++++++++++++++++++++++++++++++++++ > 1 file changed, 34 insertions(+) > > diff --git a/include/pbl/eeprom.h b/include/pbl/eeprom.h > new file mode 100644 > index 000000000000..df868b1a37fb > --- /dev/null > +++ b/include/pbl/eeprom.h > @@ -0,0 +1,34 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +#ifndef __PBL_EEPROM_H_ > +#define __PBL_EEPROM_H_ > + > +#include > +#include > + > +static inline void eeprom_read(struct pbl_i2c *i2c, u16 client_addr, u32 addr, void *buf, u16 count) > +{ > + u8 msgbuf[2]; > + struct i2c_msg msg[] = { > + { > + .addr = client_addr, > + .buf = msgbuf, > + }, { > + .addr = client_addr, > + .flags = I2C_M_RD, > + .buf = buf, > + .len = count, > + }, > + }; > + int ret, i = 0; > + > + if (addr & I2C_ADDR_16_BIT) > + msgbuf[i++] = addr >> 8; > + msgbuf[i++] = addr; > + msg[0].len = i; > + > + ret = pbl_i2c_xfer(i2c, msg, ARRAY_SIZE(msg)); > + if (ret != ARRAY_SIZE(msg)) > + pr_err("Failed to read from eeprom@%x: %d\n", client_addr, ret); > +} > + > +#endif > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |