From patchwork Mon Jun 2 13:38:03 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 4282031 Return-Path: X-Original-To: patchwork-linux-spi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 3526D9F358 for ; Mon, 2 Jun 2014 13:39:08 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 769DA2018E for ; Mon, 2 Jun 2014 13:39:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 92C21202A1 for ; Mon, 2 Jun 2014 13:39:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754795AbaFBNim (ORCPT ); Mon, 2 Jun 2014 09:38:42 -0400 Received: from michel.telenet-ops.be ([195.130.137.88]:33602 "EHLO michel.telenet-ops.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754796AbaFBNid (ORCPT ); Mon, 2 Jun 2014 09:38:33 -0400 Received: from ayla.of.borg ([84.193.72.141]) by michel.telenet-ops.be with bizsmtp id 9ReW1o00p32ts5g06ReWeC; Mon, 02 Jun 2014 15:38:30 +0200 Received: from geert by ayla.of.borg with local (Exim 4.76) (envelope-from ) id 1WrSRa-0007iT-8T; Mon, 02 Jun 2014 15:38:30 +0200 From: Geert Uytterhoeven To: Mark Brown Cc: Yoshihiro Shimoda , Magnus Damm , linux-spi@vger.kernel.org, linux-sh@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH 01/18] spi: rspi: Extract rspi_wait_for_{tx_empty, rx_full}() Date: Mon, 2 Jun 2014 15:38:03 +0200 Message-Id: <1401716301-29612-2-git-send-email-geert+renesas@glider.be> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1401716301-29612-1-git-send-email-geert+renesas@glider.be> References: <1401716301-29612-1-git-send-email-geert+renesas@glider.be> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Geert Uytterhoeven --- drivers/spi/spi-rspi.c | 29 +++++++++++++++++++++-------- 1 file changed, 21 insertions(+), 8 deletions(-) diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c index 5639f9529e0b..d04a4acce231 100644 --- a/drivers/spi/spi-rspi.c +++ b/drivers/spi/spi-rspi.c @@ -405,11 +405,22 @@ static int rspi_wait_for_interrupt(struct rspi_data *rspi, u8 wait_mask, return 0; } +static inline int rspi_wait_for_tx_empty(struct rspi_data *rspi) +{ + return rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE); +} + +static inline int rspi_wait_for_rx_full(struct rspi_data *rspi) +{ + return rspi_wait_for_interrupt(rspi, SPSR_SPRF, SPCR_SPRIE); +} + static int rspi_data_out(struct rspi_data *rspi, u8 data) { - if (rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE) < 0) { + int error = rspi_wait_for_tx_empty(rspi); + if (error < 0) { dev_err(&rspi->master->dev, "transmit timeout\n"); - return -ETIMEDOUT; + return error; } rspi_write_data(rspi, data); return 0; @@ -417,11 +428,13 @@ static int rspi_data_out(struct rspi_data *rspi, u8 data) static int rspi_data_in(struct rspi_data *rspi) { + int error; u8 data; - if (rspi_wait_for_interrupt(rspi, SPSR_SPRF, SPCR_SPRIE) < 0) { + error = rspi_wait_for_rx_full(rspi); + if (error < 0) { dev_err(&rspi->master->dev, "receive timeout\n"); - return -ETIMEDOUT; + return error; } data = rspi_read_data(rspi); return data; @@ -737,7 +750,7 @@ static int rspi_transfer_out_in(struct rspi_data *rspi, } /* Wait for the last transmission */ - rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE); + rspi_wait_for_tx_empty(rspi); return 0; } @@ -783,7 +796,7 @@ static int rspi_rz_transfer_out_in(struct rspi_data *rspi, } /* Wait for the last transmission */ - rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE); + rspi_wait_for_tx_empty(rspi); return 0; } @@ -818,7 +831,7 @@ static int qspi_transfer_out_in(struct rspi_data *rspi, } /* Wait for the last transmission */ - rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE); + rspi_wait_for_tx_empty(rspi); return 0; } @@ -836,7 +849,7 @@ static int qspi_transfer_out(struct rspi_data *rspi, struct spi_transfer *xfer) } /* Wait for the last transmission */ - rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE); + rspi_wait_for_tx_empty(rspi); return 0; }