From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 11 Aug 2025 14:30:46 +0200 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 1ulRfq-009Ko8-21 for lore@lore.pengutronix.de; Mon, 11 Aug 2025 14:30:46 +0200 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 1ulRfS-0006XI-IS for lore@pengutronix.de; Mon, 11 Aug 2025 14:30:46 +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: MIME-Version:References:In-Reply-To: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:List-Owner; bh=6c6iOwnbuEaxCFMG2oTOp0tYbTqWAmcElNh8Ok4xEhU=; b=QT6RfUjO6fELoKQaNPXctrDNuk WWPrjhZGcATw+YU8yfCZIpHQ9SSvdHq5ESdu+UNNZm5YnLiXTLzEy/3iGtpD8EEFASJkg+BAUcd8o 2zWZVg0z1JIOWRuOJ9NzC3ZqeNeEJs36zOJVDGDKnYgk6Lh2jXTq57OAgJsO/JhFCEUCKhQUCsizK FMSS1wjs4LM5qYeW7tDzGc4jZsRdY2nRITJxkTecSVX4Q9r9sqSzBA+v+UD62aPFqPt4C/Vcb8K47 kApCoi0HKoUsU1axfS67BWpM1o1l0aEBBH8y46paj1qedSgMN242V6SuQp5pApuamWQo51YZdjMBz tw3GreEQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1ulReB-00000007eNI-0ohy; Mon, 11 Aug 2025 12:29:03 +0000 Received: from metis.whiteo.stw.pengutronix.de ([185.203.201.7]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1ulRdi-00000007dbU-2SM2 for barebox@lists.infradead.org; Mon, 11 Aug 2025 12:28:39 +0000 Received: from ptz.office.stw.pengutronix.de ([2a0a:edc0:0:900:1d::77] helo=geraet.fritz.box) by metis.whiteo.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1ulRdh-0004WP-04; Mon, 11 Aug 2025 14:28:33 +0200 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum Date: Mon, 11 Aug 2025 14:28:07 +0200 Message-Id: <20250811122824.1667791-28-a.fatoum@barebox.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250811122824.1667791-1-a.fatoum@barebox.org> References: <20250811122824.1667791-1-a.fatoum@barebox.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250811_052834_718911_A2E42FA4 X-CRM114-Status: GOOD ( 10.10 ) 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=-5.4 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 autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH 27/44] nvmem: export functions to query NVMEM size 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) Allow users to query how much bytes are in a NVMEM device given a struct device that was retrieved by iterating the NVMEM class. Signed-off-by: Ahmad Fatoum --- drivers/nvmem/core.c | 12 ++++++++++++ include/linux/nvmem-consumer.h | 13 ++++++++++++- 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c index 253c00575d88..1e701426c9ad 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -374,6 +374,12 @@ struct nvmem_device *nvmem_device_get(struct device *dev, } EXPORT_SYMBOL_GPL(nvmem_device_get); +struct nvmem_device *nvmem_from_device(struct device *dev) +{ + return container_of_safe(dev, struct nvmem_device, dev); +} +EXPORT_SYMBOL_GPL(nvmem_from_device); + /** * nvmem_device_put() - put alredy got nvmem device * @@ -829,6 +835,12 @@ int nvmem_device_write(struct nvmem_device *nvmem, } EXPORT_SYMBOL_GPL(nvmem_device_write); +ssize_t nvmem_device_size(struct nvmem_device *nvmem) +{ + return nvmem->size; +} +EXPORT_SYMBOL_GPL(nvmem_device_size); + void *nvmem_cell_get_and_read(struct device_node *np, const char *cell_name, size_t bytes) { diff --git a/include/linux/nvmem-consumer.h b/include/linux/nvmem-consumer.h index c711b63aeeb0..25591d166a02 100644 --- a/include/linux/nvmem-consumer.h +++ b/include/linux/nvmem-consumer.h @@ -44,6 +44,7 @@ int nvmem_cell_write(struct nvmem_cell *cell, void *buf, size_t len); /* direct nvmem device read/write interface */ struct nvmem_device *nvmem_device_get(struct device *dev, const char *name); +struct nvmem_device *nvmem_from_device(struct device *dev); void nvmem_device_put(struct nvmem_device *nvmem); int nvmem_device_read(struct nvmem_device *nvmem, unsigned int offset, size_t bytes, void *buf); @@ -53,7 +54,7 @@ ssize_t nvmem_device_cell_read(struct nvmem_device *nvmem, struct nvmem_cell_info *info, void *buf); int nvmem_device_cell_write(struct nvmem_device *nvmem, struct nvmem_cell_info *info, void *buf); - +ssize_t nvmem_device_size(struct nvmem_device *nvmem); void nvmem_devices_print(void); #else @@ -99,6 +100,11 @@ static inline struct nvmem_device *nvmem_device_get(struct device *dev, return ERR_PTR(-EOPNOTSUPP); } +static inline struct nvmem_device *nvmem_from_device(struct device *dev) +{ + return IS_ERR(dev) ? ERR_CAST(dev) : ERR_PTR(-EOPNOTSUPP); +} + static inline void nvmem_device_put(struct nvmem_device *nvmem) { } @@ -131,6 +137,11 @@ static inline int nvmem_device_write(struct nvmem_device *nvmem, return -EOPNOTSUPP; } +static inline ssize_t nvmem_device_size(struct nvmem_device *nvmem) +{ + return -EOPNOTSUPP; +} + #endif /* CONFIG_NVMEM */ #if IS_ENABLED(CONFIG_NVMEM) && IS_ENABLED(CONFIG_OFTREE) -- 2.39.5