From patchwork Thu Jul 6 11:03:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Kurbanov X-Patchwork-Id: 13303526 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3FF16EB64DD for ; Thu, 6 Jul 2023 11:04:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232371AbjGFLEA (ORCPT ); Thu, 6 Jul 2023 07:04:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52312 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231978AbjGFLD6 (ORCPT ); Thu, 6 Jul 2023 07:03:58 -0400 Received: from mx1.sberdevices.ru (mx1.sberdevices.ru [37.18.73.165]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C053E102; Thu, 6 Jul 2023 04:03:54 -0700 (PDT) Received: from p-infra-ksmg-sc-msk01 (localhost [127.0.0.1]) by mx1.sberdevices.ru (Postfix) with ESMTP id 55462100094; Thu, 6 Jul 2023 14:03:51 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.sberdevices.ru 55462100094 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sberdevices.ru; s=mail; t=1688641431; bh=SGIJBC0n19GmJT9M+H1cDdnLT3K7y9Ikj99S/1SgLyM=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type:From; b=a2amjQQB5xlF0NF498q+9dtnraXBrsSqUur2f3if+dIP3ljXyEDUvnXewRtvcRLTZ wFihdOfIC4y+7pDKQGNqFsrV57brF2Pj50Anrnh4LPcpQlupvqr2Lrotku5qcVq7K0 mfQ3hTguCZn6wnJysWncf3B4CFxGdnA9Tn/Vodm93XQmoBiVsc5PG5rCZoSF3Ci6au uA+TpEKxm1BBO/gv0I5PlVp+KAbo37TQjE8u9WK08fJaZd20z7AN22LEqfWIzKCCmd m3tsFxLjwkHjz+u6ARYbf1uA1u1VH0hvtbH1kT1NaCGS1lqJaMlWUZjoJve1uScLXC cyR4BXv7eP9sA== Received: from p-i-exch-sc-m01.sberdevices.ru (p-i-exch-sc-m01.sberdevices.ru [172.16.192.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.sberdevices.ru (Postfix) with ESMTPS; Thu, 6 Jul 2023 14:03:51 +0300 (MSK) Received: from CAB-WSD-0004828.sigma.sbrf.ru (100.64.160.123) by p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.30; Thu, 6 Jul 2023 14:03:43 +0300 From: Martin Kurbanov To: Mark Brown , Neil Armstrong , Andy Shevchenko CC: , , , , Martin Kurbanov Subject: [PATCH v2 1/2] spi: amlogic-spifc-a1: implement adjust_op_size() Date: Thu, 6 Jul 2023 14:03:30 +0300 Message-ID: <20230706110331.19794-2-mmkurbanov@sberdevices.ru> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230706110331.19794-1-mmkurbanov@sberdevices.ru> References: <20230706110331.19794-1-mmkurbanov@sberdevices.ru> MIME-Version: 1.0 X-Originating-IP: [100.64.160.123] X-ClientProxiedBy: p-i-exch-sc-m02.sberdevices.ru (172.16.192.103) To p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) X-KSMG-Rule-ID: 10 X-KSMG-Message-Action: clean X-KSMG-AntiSpam-Lua-Profiles: 178468 [Jul 06 2023] X-KSMG-AntiSpam-Version: 5.9.59.0 X-KSMG-AntiSpam-Envelope-From: MMKurbanov@sberdevices.ru X-KSMG-AntiSpam-Rate: 0 X-KSMG-AntiSpam-Status: not_detected X-KSMG-AntiSpam-Method: none X-KSMG-AntiSpam-Auth: dkim=none X-KSMG-AntiSpam-Info: LuaCore: 520 520 ccb018a655251011855942a2571029252d3d69a2, {Tracking_from_domain_doesnt_match_to}, 100.64.160.123:7.1.2;d41d8cd98f00b204e9800998ecf8427e.com:7.1.1;127.0.0.199:7.1.2;sberdevices.ru:7.1.1,5.0.1;p-i-exch-sc-m01.sberdevices.ru:7.1.1,5.0.1, FromAlignment: s, {Tracking_white_helo}, ApMailHostAddress: 100.64.160.123 X-MS-Exchange-Organization-SCL: -1 X-KSMG-AntiSpam-Interceptor-Info: scan successful X-KSMG-AntiPhishing: Clean X-KSMG-LinksScanning: Clean X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 2.0.1.6960, bases: 2023/07/05 14:57:00 #21566867 X-KSMG-AntiVirus-Status: Clean, skipped Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org This enhancement eliminates the need for a loop in the amlogic_spifc_a1_exec_op() function and allows the SPI core to dynamically divide transactions into appropriately sized chunks. Signed-off-by: Martin Kurbanov Reviewed-by: Neil Armstrong --- drivers/spi/spi-amlogic-spifc-a1.c | 66 +++++++++++------------------- 1 file changed, 25 insertions(+), 41 deletions(-) diff --git a/drivers/spi/spi-amlogic-spifc-a1.c b/drivers/spi/spi-amlogic-spifc-a1.c index 3c4224c38399..a92e4fc23396 100644 --- a/drivers/spi/spi-amlogic-spifc-a1.c +++ b/drivers/spi/spi-amlogic-spifc-a1.c @@ -72,7 +72,7 @@ #define SPIFC_A1_USER_DBUF_ADDR_REG 0x248 -#define SPIFC_A1_BUFFER_SIZE 512 +#define SPIFC_A1_BUFFER_SIZE 512U #define SPIFC_A1_MAX_HZ 200000000 #define SPIFC_A1_MIN_HZ 1000000 @@ -240,61 +240,44 @@ static int amlogic_spifc_a1_exec_op(struct spi_mem *mem, { struct amlogic_spifc_a1 *spifc = spi_controller_get_devdata(mem->spi->controller); - size_t off, nbytes = op->data.nbytes; - u32 cmd_cfg, addr_cfg, dummy_cfg, dmode; + size_t data_size = op->data.nbytes; int ret; amlogic_spifc_a1_user_init(spifc); + amlogic_spifc_a1_set_cmd(spifc, SPIFC_A1_USER_CMD(op)); - cmd_cfg = SPIFC_A1_USER_CMD(op); - amlogic_spifc_a1_set_cmd(spifc, cmd_cfg); + if (op->addr.nbytes) + amlogic_spifc_a1_set_addr(spifc, op->addr.val, + SPIFC_A1_USER_ADDR(op)); - if (op->addr.nbytes) { - addr_cfg = SPIFC_A1_USER_ADDR(op); - amlogic_spifc_a1_set_addr(spifc, op->addr.val, addr_cfg); - } - - if (op->dummy.nbytes) { - dummy_cfg = SPIFC_A1_USER_DUMMY(op); - amlogic_spifc_a1_set_dummy(spifc, dummy_cfg); - } - - if (!op->data.nbytes) - return amlogic_spifc_a1_request(spifc, false); - - dmode = ilog2(op->data.buswidth); - off = 0; - - do { - size_t block_size = min_t(size_t, nbytes, SPIFC_A1_BUFFER_SIZE); - - amlogic_spifc_a1_set_cmd(spifc, cmd_cfg); + if (op->dummy.nbytes) + amlogic_spifc_a1_set_dummy(spifc, SPIFC_A1_USER_DUMMY(op)); - if (op->addr.nbytes) - amlogic_spifc_a1_set_addr(spifc, op->addr.val + off, - addr_cfg); - - if (op->dummy.nbytes) - amlogic_spifc_a1_set_dummy(spifc, dummy_cfg); + if (data_size) { + u32 mode = ilog2(op->data.buswidth); writel(0, spifc->base + SPIFC_A1_USER_DBUF_ADDR_REG); if (op->data.dir == SPI_MEM_DATA_IN) - ret = amlogic_spifc_a1_read(spifc, - op->data.buf.in + off, - block_size, dmode); + ret = amlogic_spifc_a1_read(spifc, op->data.buf.in, + data_size, mode); else - ret = amlogic_spifc_a1_write(spifc, - op->data.buf.out + off, - block_size, dmode); - - nbytes -= block_size; - off += block_size; - } while (nbytes != 0 && !ret); + ret = amlogic_spifc_a1_write(spifc, op->data.buf.out, + data_size, mode); + } else { + ret = amlogic_spifc_a1_request(spifc, false); + } return ret; } +static int amlogic_spifc_a1_adjust_op_size(struct spi_mem *mem, + struct spi_mem_op *op) +{ + op->data.nbytes = min(op->data.nbytes, SPIFC_A1_BUFFER_SIZE); + return 0; +} + static void amlogic_spifc_a1_hw_init(struct amlogic_spifc_a1 *spifc) { u32 regv; @@ -314,6 +297,7 @@ static void amlogic_spifc_a1_hw_init(struct amlogic_spifc_a1 *spifc) static const struct spi_controller_mem_ops amlogic_spifc_a1_mem_ops = { .exec_op = amlogic_spifc_a1_exec_op, + .adjust_op_size = amlogic_spifc_a1_adjust_op_size, }; static int amlogic_spifc_a1_probe(struct platform_device *pdev)