From patchwork Thu Dec 23 01:14:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Mosberger-Tang X-Patchwork-Id: 527980 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 A005CC4332F for ; Thu, 23 Dec 2021 01:15:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346623AbhLWBPo (ORCPT ); Wed, 22 Dec 2021 20:15:44 -0500 Received: from o1.ptr2625.egauge.net ([167.89.112.53]:27476 "EHLO o1.ptr2625.egauge.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346271AbhLWBOy (ORCPT ); Wed, 22 Dec 2021 20:14:54 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=egauge.net; h=from:subject:in-reply-to:references:mime-version:to:cc: content-transfer-encoding:content-type; s=sgd; bh=xddQg0IvMbQSPuAc5H694hthTJIRjKrXhZw1xq1hEks=; b=Wrmx8l0su8dp9ndnFNO6sOW5lBaz+uiSFn7IMZNva52x3OVqh2+M/sZoOYrQVQTYyRs8 Md/+jjaQSKOr8aoFyr6TuKZsXSXEMia5qHZsgwWiDmnGAen0fPe1z+f3jjOQArqNr1dsT5 FnGMg9TlUXC3+VHoFrFYzpd7WxFc1I1umCcCnBPmcCXIMxJhmn7CJPF6Lcv9DJz0MfbSr9 1ZD5xWt5xk86qtbENBu5Oz6SogHrZ1GNfgSqsYi9Ntw+gnUg3xB3K7VIRXMRHOycOwW5Kk Yh9HSkAtrTOkCyIHSAztMVeWqXQvdI7AEJTRYhkXwph7WSPBrZK3FGmz4I9fxNag== Received: by filterdrecv-7bf5c69d5-5zdgz with SMTP id filterdrecv-7bf5c69d5-5zdgz-1-61C3CD5F-9 2021-12-23 01:14:07.092312815 +0000 UTC m=+9687226.301035880 Received: from pearl.egauge.net (unknown) by geopod-ismtpd-2-0 (SG) with ESMTP id VtsPa1YnRSSp8kNi4WOeEw Thu, 23 Dec 2021 01:14:06.971 +0000 (UTC) Received: by pearl.egauge.net (Postfix, from userid 1000) id 03A30701537; Wed, 22 Dec 2021 18:14:06 -0700 (MST) From: David Mosberger-Tang Subject: [PATCH v2 47/50] wilc1000: factor SPI DMA command initialization code into a function Date: Thu, 23 Dec 2021 01:14:07 +0000 (UTC) Message-Id: <20211223011358.4031459-48-davidm@egauge.net> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211223011358.4031459-1-davidm@egauge.net> References: <20211223011358.4031459-1-davidm@egauge.net> MIME-Version: 1.0 X-SG-EID: +kMxBqj35EdRUKoy8diX1j4AXmPtd302oan+iXZuF8m2Nw4HRW2irNspffT/khET6RJF6+Prbl0h/EtF1rRLvANxWyaBzmrT8i6kBIwcOApodCCbwNMcx6CCkJweUuGfzFJsSRyTzgz3Qq5GQeAeySg3GXqJwB66FAOqWelVjAjBnKZ+u4KzlAW2T5A5im3WD+xBUlH5RQuG8zgX7WiE7mT87kfJwlJa6F7wI+r3qNdPCAohl5raYMAlrb2D1Ci7MDJYf2euPJ/CB5V0ZdcZtw== To: Ajay Singh Cc: Claudiu Beznea , Kalle Valo , "David S. Miller" , Jakub Kicinski , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, David Mosberger-Tang X-Entity-ID: Xg4JGAcGrJFIz2kDG9eoaQ== Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Introduce wilc_spi_dma_init_cmd() as a helper function as this will come in handy later. Signed-off-by: David Mosberger-Tang --- drivers/net/wireless/microchip/wilc1000/spi.c | 41 +++++++++++++------ 1 file changed, 28 insertions(+), 13 deletions(-) diff --git a/drivers/net/wireless/microchip/wilc1000/spi.c b/drivers/net/wireless/microchip/wilc1000/spi.c index 189907580d921..3e2022b43ee70 100644 --- a/drivers/net/wireless/microchip/wilc1000/spi.c +++ b/drivers/net/wireless/microchip/wilc1000/spi.c @@ -650,21 +650,14 @@ static int wilc_spi_write_cmd(struct wilc *wilc, u8 cmd, u32 adr, u32 data, return 0; } -static int wilc_spi_dma_rw(struct wilc *wilc, u8 cmd, u32 adr, u8 *b, u32 sz) +static int wilc_spi_dma_init_cmd(struct wilc *wilc, struct wilc_spi_cmd *c, + u8 cmd, u32 adr, u32 sz) { struct spi_device *spi = to_spi_device(wilc->dev); struct wilc_spi *spi_priv = wilc->bus_data; - u16 crc_recv, crc_calc; - u8 wb[32], rb[32]; - int cmd_len, resp_len; - int retry, ix = 0; - u8 crc[2], *crc7; - struct wilc_spi_cmd *c; - struct wilc_spi_rsp_data *r; + int cmd_len; + u8 *crc7; - memset(wb, 0x0, sizeof(wb)); - memset(rb, 0x0, sizeof(rb)); - c = (struct wilc_spi_cmd *)wb; c->cmd_type = cmd; if (cmd == CMD_DMA_WRITE || cmd == CMD_DMA_READ) { c->u.dma_cmd.addr[0] = adr >> 16; @@ -687,10 +680,32 @@ static int wilc_spi_dma_rw(struct wilc *wilc, u8 cmd, u32 adr, u8 *b, u32 sz) return -EINVAL; } if (spi_priv->crc7_enabled) { - crc7 = wb + cmd_len; - *crc7 = wilc_get_crc7(wb, cmd_len); + crc7 = (u8 *)c + cmd_len; + *crc7 = wilc_get_crc7((u8 *)c, cmd_len); cmd_len += 1; } + return cmd_len; +} + +static int wilc_spi_dma_rw(struct wilc *wilc, u8 cmd, u32 adr, u8 *b, u32 sz) +{ + struct spi_device *spi = to_spi_device(wilc->dev); + struct wilc_spi *spi_priv = wilc->bus_data; + u16 crc_recv, crc_calc; + u8 wb[32], rb[32]; + int cmd_len, resp_len; + int retry, ix = 0; + u8 crc[2]; + struct wilc_spi_cmd *c; + struct wilc_spi_rsp_data *r; + + memset(wb, 0x0, sizeof(wb)); + memset(rb, 0x0, sizeof(rb)); + c = (struct wilc_spi_cmd *)wb; + + cmd_len = wilc_spi_dma_init_cmd(wilc, c, cmd, adr, sz); + if (cmd_len < 0) + return -EINVAL; resp_len = sizeof(*r);