From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EE3656074129 for ; Fri, 13 Nov 2026 13:50:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=tVwdx/Mq; dkim=pass (2048-bit key) header.d=sntech.de header.i=@sntech.de header.a=rsa-sha256 header.s=gloria202408 header.b=0p7OeW18 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-Unsubscribe-Post: List-Owner; bh=xcF/qRmyMdOcWsOsmn4LsTlUoZBs0bxa1cPGLKlSvKA=; b=tVwdx/MqIcgea6 yxJx/mcddlgd7qAKVpRXW9DN6+qRGYenWwUPBccPDuq5Apz5qtGte2daNigITMiUdh7vY4nOTMRPT nKrVblc1wF0vZ/P6zm9aBGtzn6sC741jcnE/t8STPtxL67PUd4Ei2SLhYcAPlrhLIhSIgJOefh89r tEDqUAE/2iDqXi65Q72alQmpFF/5cGGB3AB/mFZ7z5a5Z4Yd2Rv32s6EoABhi9iT5knGCbNHU+eRa fHHuX/57TbrUDOi25hJzJCrHE6ceu/P9cnhwzoK6A0b/aSoFj2B6rG/8mmP4p7uf1Dn8FEE0Dqi1a RXVI4owT43Pw7Qd1ZBSA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xRrfk-0000000D1YF-3AuW; Fri, 13 Nov 2026 13:50:32 +0000 Received: from gloria.sntech.de ([185.11.138.130]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xRrfh-0000000D1V2-2QSF; Fri, 13 Nov 2026 13:50:30 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sntech.de; s=gloria202408; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-Type; bh=xcF/qRmyMdOcWsOsmn4LsTlUoZBs0bxa1cPGLKlSvKA=; b=0p7OeW18XEgf5yUUxxL+rm36R7 W4i/tSfFKSJ2JkbeVi90tL/9hiD3OvJnb5AXmcB8NAHOkN2hOGN5p4KTwJWz+H2JP0JGjznhRM5il aJI6r/IMW9Hi+mCNCwcqJqaij6bB0OpPVRnhiu3LPl1JWw5eAuGjG8Cv55fMHQgZlM+B1KQcwjP3C Ty/gSUT7jkzyhMxtpYXmFQrlV/4hAC/Nn0sXIO0o29rPd2liPwW76BGpprAx0xxV2UkL076zJ4GRt KcSyjuznFnVpYNPlM0OZZNj3ROMJYwjAOci7W+2gWOVg+a9Ov0jWaVLlIQiaD5mIy6jLB+PHfdB/p PVU+w5Iw==; From: Heiko Stuebner To: broonie@kernel.org Cc: Heiko Stuebner , linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, quentin.schulz@cherry.de, Lee Jones , Sebastian Reichel , Heiko Stuebner Subject: [PATCH v2 2/6] spi: Export spi_set_cs() function Date: Fri, 13 Nov 2026 14:50:13 +0100 Message-ID: <20261113135017.1047959-3-heiko@sntech.de> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20261113135017.1047959-1-heiko@sntech.de> References: <20261113135017.1047959-1-heiko@sntech.de> X-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261113_055029_640780_B077A338 X-CRM114-Status: GOOD ( 12.95 ) X-Spam-Score: -2.1 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-18.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 From: Heiko Stuebner While spi_set_cs is currently only used when the SPI framework manages the core transfer function, it contains a lot of functionality that can be used for the upcoming atomic transfers, where a driver implementing that atomic transfer could profit from not having to duplicate the chip-select functionality. The only sleeping part was the spi_delay_exec function doing the chip-select delays, which can now also run in atomic contexts. So export the function. Signed-off-by: Heiko Stuebner --- drivers/spi/spi.c | 3 ++- include/linux/spi/spi.h | 2 ++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index e79f16aca1a3..b268357e933c 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -1268,7 +1268,7 @@ static void spi_toggle_csgpiod(struct spi_device *spi, u8 idx, bool enable, bool spi_delay_exec(&spi->cs_inactive, NULL); } -static void spi_set_cs(struct spi_device *spi, bool enable, bool force) +void spi_set_cs(struct spi_device *spi, bool enable, bool force) { bool activate = enable; u8 idx; @@ -1325,6 +1325,7 @@ static void spi_set_cs(struct spi_device *spi, bool enable, bool force) spi_delay_exec(&spi->cs_inactive, NULL); } } +EXPORT_SYMBOL_GPL(spi_set_cs); #ifdef CONFIG_HAS_DMA static int spi_map_buf_attrs(struct spi_controller *ctlr, struct device *dev, diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index fb4baa0d3398..0bf31776c54c 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -349,6 +349,8 @@ static inline bool spi_is_csgpiod(struct spi_device *spi) return false; } +extern void spi_set_cs(struct spi_device *spi, bool enable, bool force); + /** * struct spi_driver - Host side "protocol" driver * @id_table: List of SPI devices supported by this driver -- 2.53.0