From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5922FC433E4 for ; Mon, 6 Jul 2020 07:18:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3893020760 for ; Mon, 6 Jul 2020 07:18:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728720AbgGFHSK (ORCPT ); Mon, 6 Jul 2020 03:18:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45706 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728192AbgGFHSJ (ORCPT ); Mon, 6 Jul 2020 03:18:09 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A95B8C061794 for ; Mon, 6 Jul 2020 00:18:09 -0700 (PDT) Received: from heimdall.vpn.pengutronix.de ([2001:67c:670:205:1d::14] helo=blackshift.org) by metis.ext.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1jsLO8-0004BC-Pn; Mon, 06 Jul 2020 09:18:04 +0200 From: Marc Kleine-Budde To: Mark Brown Cc: Maxime Ripard , Chen-Yu Tsai , linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de, Marc Kleine-Budde Subject: [PATCH 5/9] spi: spi-sun6i: sun6i_spi_drain_fifo(): introduce sun6i_spi_get_rx_fifo_count() and make use of it Date: Mon, 6 Jul 2020 09:17:57 +0200 Message-Id: <20200706071801.558394-6-mkl@pengutronix.de> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200706071801.558394-1-mkl@pengutronix.de> References: <20200706071801.558394-1-mkl@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 2001:67c:670:205:1d::14 X-SA-Exim-Mail-From: mkl@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-spi@vger.kernel.org Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org This patch introduces the function sun6i_spi_get_rx_fifo_count(), similar to the existing sun6i_spi_get_tx_fifo_count(), to make the sun6i_spi_drain_fifo() function a bit easier to read. Signed-off-by: Marc Kleine-Budde --- drivers/spi/spi-sun6i.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/spi/spi-sun6i.c b/drivers/spi/spi-sun6i.c index 882492774986..f70d14229483 100644 --- a/drivers/spi/spi-sun6i.c +++ b/drivers/spi/spi-sun6i.c @@ -106,6 +106,15 @@ static inline void sun6i_spi_write(struct sun6i_spi *sspi, u32 reg, u32 value) writel(value, sspi->base_addr + reg); } +static inline u32 sun6i_spi_get_rx_fifo_count(struct sun6i_spi *sspi) +{ + u32 reg = sun6i_spi_read(sspi, SUN6I_FIFO_STA_REG); + + reg >>= SUN6I_FIFO_STA_RF_CNT_BITS; + + return reg & SUN6I_FIFO_STA_RF_CNT_MASK; +} + static inline u32 sun6i_spi_get_tx_fifo_count(struct sun6i_spi *sspi) { u32 reg = sun6i_spi_read(sspi, SUN6I_FIFO_STA_REG); @@ -133,13 +142,11 @@ static inline void sun6i_spi_disable_interrupt(struct sun6i_spi *sspi, u32 mask) static inline void sun6i_spi_drain_fifo(struct sun6i_spi *sspi, int len) { - u32 reg, cnt; + u32 cnt; u8 byte; /* See how much data is available */ - reg = sun6i_spi_read(sspi, SUN6I_FIFO_STA_REG); - reg &= SUN6I_FIFO_STA_RF_CNT_MASK; - cnt = reg >> SUN6I_FIFO_STA_RF_CNT_BITS; + cnt = sun6i_spi_get_rx_fifo_count(sspi); if (len > cnt) len = cnt; -- 2.27.0