From patchwork Fri Oct 25 16:14:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miquel Raynal X-Patchwork-Id: 13851042 Received: from relay4-d.mail.gandi.net (relay4-d.mail.gandi.net [217.70.183.196]) (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 E961E189913 for ; Fri, 25 Oct 2024 16:15:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.196 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729872914; cv=none; b=KqyFKdl+fIyLGY6TxyYbv5M/20jn/bIEz+PEhi4aUVDCzVX0ZAocMeBAci/1MRXztF9swfsyzEmhzN2eMe0NVLSJMFkfkF/nhTS3JdN5rf7oEqK7sqgAxGEFMZ8aMv0ce9SSznflVvYzaY6CsZu50bzezD8BiFrK4T41KWHuuZo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729872914; c=relaxed/simple; bh=BxYE3uTISCTQYPW2iynFeawYjYh2HtbaY5saEoiMxyg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=qTjUQ2EoV1t4OIk6SGHi9sEmSwsyvBFk1pgodgieCDYXM/VW/0/q4evznzuaztoQkaESSGnSTT9YsJvFSFYItCIfTaGSTJYjZ5EWpjxrm9AZav4Je3jPB2SAYX0viMDJh1ZuR+YMYn3M8ulO/uj3vRVl+H8lWJCnJ4pvdb9PZyk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=jW/rDbNN; arc=none smtp.client-ip=217.70.183.196 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="jW/rDbNN" Received: by mail.gandi.net (Postfix) with ESMTPSA id 74330E000E; Fri, 25 Oct 2024 16:15:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1729872910; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=kMsFHAzz3BDIa3jh58A/QFESYBN3TOR1mtnE+yzOx0w=; b=jW/rDbNNQRKcrsbsAdlhr7jWig/EFkJMO35TA0TJke7gVLuzhro6aBBoNt4FNsedDi7D8f NLSG/NimUmXzDF4ELSjUr1B4q1dP4h+zFuWGS/IAXv+JCWq3njLtnArV+irE7ZbKSwuD5q IaYTtcfTeEFpQNSW3G9lmpKfRT4SgvgKYteCz52FM6EpRFSnBwNlAJDPYhAaSMkABXLLb0 CMcsq3XREnkOAskbHG0QuLUPWVXeL62Kh6EsBv8tlgPMUJrKKq7BVnZ52cc3MiWpRLhYay SfxBLNS9o4di6wy0buYE/3aat5Ake/ETqdwiNlO+VdoSuq31ZJHCDW8OmUwwig== From: Miquel Raynal To: Richard Weinberger , Vignesh Raghavendra , Tudor Ambarus , Pratyush Yadav , Michael Walle , Cc: Mark Brown , , Steam Lin , Thomas Petazzoni , Sanjay R Mehta , Han Xu , Conor Dooley , Daire McNamara , Matthias Brugger , AngeloGioacchino Del Regno , Haibo Chen , Yogesh Gaur , Heiko Stuebner , Michal Simek , Miquel Raynal Subject: [PATCH 06/24] spi: dw: Support per spi-mem operation frequency switches Date: Fri, 25 Oct 2024 18:14:43 +0200 Message-ID: <20241025161501.485684-7-miquel.raynal@bootlin.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241025161501.485684-1-miquel.raynal@bootlin.com> References: <20241025161501.485684-1-miquel.raynal@bootlin.com> Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: miquel.raynal@bootlin.com Every ->exec_op() call correctly configures the spi bus speed to the maximum allowed frequency for the memory using the constant spi default parameter. Since we can now have per-operation constraints, let's use the value that comes from the spi-mem operation structure instead. In case there is no specific limitation for this operation, the default spi device value will be given anyway. The per-operation frequency capability is thus advertised to the spi-mem core. Signed-off-by: Miquel Raynal --- drivers/spi/spi-dw-core.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-dw-core.c b/drivers/spi/spi-dw-core.c index 431788dd848c..3d49b1dbaed4 100644 --- a/drivers/spi/spi-dw-core.c +++ b/drivers/spi/spi-dw-core.c @@ -677,7 +677,7 @@ static int dw_spi_exec_mem_op(struct spi_mem *mem, const struct spi_mem_op *op) * operation. Transmit-only mode is suitable for the rest of them. */ cfg.dfs = 8; - cfg.freq = clamp(mem->spi->max_speed_hz, 0U, dws->max_mem_freq); + cfg.freq = clamp(op->max_freq, 0U, dws->max_mem_freq); if (op->data.dir == SPI_MEM_DATA_IN) { cfg.tmode = DW_SPI_CTRLR0_TMOD_EPROMREAD; cfg.ndf = op->data.nbytes; @@ -894,6 +894,10 @@ static void dw_spi_hw_init(struct device *dev, struct dw_spi *dws) dw_writel(dws, DW_SPI_CS_OVERRIDE, 0xF); } +static const struct spi_controller_mem_caps dw_spi_mem_caps = { + .per_op_freq = true, +}; + int dw_spi_add_host(struct device *dev, struct dw_spi *dws) { struct spi_controller *host; @@ -941,8 +945,10 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws) host->set_cs = dw_spi_set_cs; host->transfer_one = dw_spi_transfer_one; host->handle_err = dw_spi_handle_err; - if (dws->mem_ops.exec_op) + if (dws->mem_ops.exec_op) { host->mem_ops = &dws->mem_ops; + host->mem_caps = &dw_spi_mem_caps; + } host->max_speed_hz = dws->max_freq; host->flags = SPI_CONTROLLER_GPIO_SS; host->auto_runtime_pm = true;