From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BF33A33CC2; Tue, 14 May 2024 11:31:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715686289; cv=none; b=TQ4GXohaK8WhuYIOQevKsVq6Caa4egkR53mAa+BC6mRVNI/+vwONssh9hofb2qrY3IhqNJ2o1xm1TWXnVGnpuu21mbAIID3M6jrdGYjBkP4KxObca6m74AFOsbAuqN+qDsAmLst5Aps7oiv3KOSkIQzA9zcc45KH8p6129NdX/4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715686289; c=relaxed/simple; bh=G33F742CWsSCjrq6GPgxaXXCrRa2HiIQGH05096Nwsc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=gkw+LluCRLKCbPoiP6Ewx9ylp5aK2aHKqP42arhUWblx1kTPqjevfouZCYI67j6kYwxdvslIRLpOhSCSw673k8PA2DERxA/urCy0bGC1vBpquPYDGry2e5Pu0LkLNWJr3h/V0Bl8xo1nMDpo5+caOlBG+h8fSnMfGYmGR2twkck= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=tAhf/3ld; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="tAhf/3ld" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 46270C2BD10; Tue, 14 May 2024 11:31:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1715686289; bh=G33F742CWsSCjrq6GPgxaXXCrRa2HiIQGH05096Nwsc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tAhf/3ld3Geq9ohKWEjJw1XN+dqK0FaUSJWeL0t0iF9K822ssonkL4scsB7oZw1Mg ScuVcjQwI1akZVpsOksnRxC9M291EkmxUz8F7GbLTRi91bsCifpy3PaYWnk0DevWxz jaA1sMxK6EBs4a/hL/8bRQg1LitvG7nKBK9qbJw8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yang Yingliang , Mark Brown , Sasha Levin Subject: [PATCH 6.1 044/236] spi: introduce new helpers with using modern naming Date: Tue, 14 May 2024 12:16:46 +0200 Message-ID: <20240514101022.016671715@linuxfoundation.org> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240514101020.320785513@linuxfoundation.org> References: <20240514101020.320785513@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Yang Yingliang [ Upstream commit b8d3b056a78dcc941fd1a117697ab2b956c2953f ] For using modern names host/target to instead of all the legacy names, I think it takes 3 steps: - step1: introduce new helpers with modern naming. - step2: switch to use these new helpers in all drivers. - step3: remove all legacy helpers and update all legacy names. This patch is for step1, it introduces new helpers with host/target naming for drivers using. Signed-off-by: Yang Yingliang Link: https://lore.kernel.org/r/20221011092204.950288-1-yangyingliang@huawei.com Signed-off-by: Mark Brown Stable-dep-of: 0064db9ce4aa ("spi: axi-spi-engine: fix version format string") Signed-off-by: Sasha Levin --- drivers/spi/spi.c | 11 ++++++++++ include/linux/spi/spi.h | 47 +++++++++++++++++++++++++++++++++++++++-- 2 files changed, 56 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 19688f333e0bc..4aa2e0928de9c 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -2774,6 +2774,17 @@ int spi_slave_abort(struct spi_device *spi) } EXPORT_SYMBOL_GPL(spi_slave_abort); +int spi_target_abort(struct spi_device *spi) +{ + struct spi_controller *ctlr = spi->controller; + + if (spi_controller_is_target(ctlr) && ctlr->target_abort) + return ctlr->target_abort(ctlr); + + return -ENOTSUPP; +} +EXPORT_SYMBOL_GPL(spi_target_abort); + static ssize_t slave_show(struct device *dev, struct device_attribute *attr, char *buf) { diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 8e9054d9f6df0..6edf8a2962d4a 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -376,6 +376,7 @@ extern struct spi_device *spi_new_ancillary_device(struct spi_device *spi, u8 ch * @max_speed_hz: Highest supported transfer speed * @flags: other constraints relevant to this driver * @slave: indicates that this is an SPI slave controller + * @target: indicates that this is an SPI target controller * @devm_allocated: whether the allocation of this struct is devres-managed * @max_transfer_size: function that returns the max transfer size for * a &spi_device; may be %NULL, so the default %SIZE_MAX will be used. @@ -460,6 +461,7 @@ extern struct spi_device *spi_new_ancillary_device(struct spi_device *spi, u8 ch * @mem_caps: controller capabilities for the handling of memory operations. * @unprepare_message: undo any work done by prepare_message(). * @slave_abort: abort the ongoing transfer request on an SPI slave controller + * @target_abort: abort the ongoing transfer request on an SPI target controller * @cs_gpiods: Array of GPIO descs to use as chip select lines; one per CS * number. Any individual value may be NULL for CS lines that * are not GPIOs (driven by the SPI controller itself). @@ -556,8 +558,12 @@ struct spi_controller { /* Flag indicating if the allocation of this struct is devres-managed */ bool devm_allocated; - /* Flag indicating this is an SPI slave controller */ - bool slave; + union { + /* Flag indicating this is an SPI slave controller */ + bool slave; + /* Flag indicating this is an SPI target controller */ + bool target; + }; /* * on some hardware transfer / message size may be constrained @@ -671,6 +677,7 @@ struct spi_controller { int (*unprepare_message)(struct spi_controller *ctlr, struct spi_message *message); int (*slave_abort)(struct spi_controller *ctlr); + int (*target_abort)(struct spi_controller *ctlr); /* * These hooks are for drivers that use a generic implementation @@ -748,6 +755,11 @@ static inline bool spi_controller_is_slave(struct spi_controller *ctlr) return IS_ENABLED(CONFIG_SPI_SLAVE) && ctlr->slave; } +static inline bool spi_controller_is_target(struct spi_controller *ctlr) +{ + return IS_ENABLED(CONFIG_SPI_SLAVE) && ctlr->target; +} + /* PM calls that need to be issued by the driver */ extern int spi_controller_suspend(struct spi_controller *ctlr); extern int spi_controller_resume(struct spi_controller *ctlr); @@ -784,6 +796,21 @@ static inline struct spi_controller *spi_alloc_slave(struct device *host, return __spi_alloc_controller(host, size, true); } +static inline struct spi_controller *spi_alloc_host(struct device *dev, + unsigned int size) +{ + return __spi_alloc_controller(dev, size, false); +} + +static inline struct spi_controller *spi_alloc_target(struct device *dev, + unsigned int size) +{ + if (!IS_ENABLED(CONFIG_SPI_SLAVE)) + return NULL; + + return __spi_alloc_controller(dev, size, true); +} + struct spi_controller *__devm_spi_alloc_controller(struct device *dev, unsigned int size, bool slave); @@ -803,6 +830,21 @@ static inline struct spi_controller *devm_spi_alloc_slave(struct device *dev, return __devm_spi_alloc_controller(dev, size, true); } +static inline struct spi_controller *devm_spi_alloc_host(struct device *dev, + unsigned int size) +{ + return __devm_spi_alloc_controller(dev, size, false); +} + +static inline struct spi_controller *devm_spi_alloc_target(struct device *dev, + unsigned int size) +{ + if (!IS_ENABLED(CONFIG_SPI_SLAVE)) + return NULL; + + return __devm_spi_alloc_controller(dev, size, true); +} + extern int spi_register_controller(struct spi_controller *ctlr); extern int devm_spi_register_controller(struct device *dev, struct spi_controller *ctlr); @@ -1162,6 +1204,7 @@ static inline void spi_message_free(struct spi_message *m) extern int spi_setup(struct spi_device *spi); extern int spi_async(struct spi_device *spi, struct spi_message *message); extern int spi_slave_abort(struct spi_device *spi); +extern int spi_target_abort(struct spi_device *spi); static inline size_t spi_max_message_size(struct spi_device *spi) -- 2.43.0