From patchwork Fri Nov 29 12:19:20 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lee Jones X-Patchwork-Id: 21889 Return-Path: X-Original-To: linaro@patches.linaro.org Delivered-To: linaro@patches.linaro.org Received: from mail-qe0-f69.google.com (mail-qe0-f69.google.com [209.85.128.69]) by ip-10-151-82-157.ec2.internal (Postfix) with ESMTPS id 77C9E23FC4 for ; Fri, 29 Nov 2013 12:20:36 +0000 (UTC) Received: by mail-qe0-f69.google.com with SMTP id 1sf17033527qec.0 for ; Fri, 29 Nov 2013 04:20:36 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:delivered-to:from:to:cc:subject :date:message-id:in-reply-to:references:x-original-sender :x-original-authentication-results:precedence:mailing-list:list-id :list-post:list-help:list-archive:list-unsubscribe; bh=zFN9e+FiZ/+677AqnyCkS4SzwuMwm++KpJJGXm+GBWE=; b=c593BLt1XJy+FloQsBuIlPo9AhVO0jZy9PmpTcSKGJdZAXOhAJaXBW3QgoeNSOJuXn OTr0JzegotSAMlb55xrIw7pSafW8giFxhRwmeWVBNrCSdreJg7vMwL0JBfA//YIMBjKn Q6weNOjFkhvfaDtlyf3cEIC6tacMSsYn+jcB16GuEbs6+8VuQiXKgSD7+LCBu8avE5G2 +bQ7PIOOLsgt5ihOvx7/xVRWwvql/siVafMRk/ZFnev3gnU5HBr3TaRVJZM4fxP5RMmV fCwe3+ZFnLj7LlksQ5Imzk6pbiu7GslxEfytR05UsqncmwVn49wBoA2HybkrOLFFSx5k p1UQ== X-Gm-Message-State: ALoCoQkkAQ2roxC7AmqsPrWpkoPAKpJYQdtNd01pjZxCYT7qTOj8zIexKpaPWW/goNM9CZngz4Wk X-Received: by 10.236.122.234 with SMTP id t70mr21260869yhh.23.1385727636325; Fri, 29 Nov 2013 04:20:36 -0800 (PST) MIME-Version: 1.0 X-BeenThere: patchwork-forward@linaro.org Received: by 10.49.30.37 with SMTP id p5ls3820856qeh.51.gmail; Fri, 29 Nov 2013 04:20:36 -0800 (PST) X-Received: by 10.221.66.132 with SMTP id xq4mr168808vcb.57.1385727636241; Fri, 29 Nov 2013 04:20:36 -0800 (PST) Received: from mail-vb0-f53.google.com (mail-vb0-f53.google.com [209.85.212.53]) by mx.google.com with ESMTPS id nh5si24804045vec.30.2013.11.29.04.20.36 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 29 Nov 2013 04:20:36 -0800 (PST) Received-SPF: neutral (google.com: 209.85.212.53 is neither permitted nor denied by best guess record for domain of patch+caf_=patchwork-forward=linaro.org@linaro.org) client-ip=209.85.212.53; Received: by mail-vb0-f53.google.com with SMTP id g10so6788281vbg.12 for ; Fri, 29 Nov 2013 04:20:36 -0800 (PST) X-Received: by 10.221.32.200 with SMTP id sl8mr30688vcb.64.1385727636186; Fri, 29 Nov 2013 04:20:36 -0800 (PST) X-Forwarded-To: patchwork-forward@linaro.org X-Forwarded-For: patch@linaro.org patchwork-forward@linaro.org Delivered-To: patches@linaro.org Received: by 10.220.174.196 with SMTP id u4csp87470vcz; Fri, 29 Nov 2013 04:20:35 -0800 (PST) X-Received: by 10.236.183.194 with SMTP id q42mr177309yhm.192.1385727635837; Fri, 29 Nov 2013 04:20:35 -0800 (PST) Received: from mail-yh0-f41.google.com (mail-yh0-f41.google.com [209.85.213.41]) by mx.google.com with ESMTPS id i10si8083311yhg.125.2013.11.29.04.20.35 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 29 Nov 2013 04:20:35 -0800 (PST) Received-SPF: neutral (google.com: 209.85.213.41 is neither permitted nor denied by best guess record for domain of lee.jones@linaro.org) client-ip=209.85.213.41; Received: by mail-yh0-f41.google.com with SMTP id f11so6731917yha.28 for ; Fri, 29 Nov 2013 04:20:35 -0800 (PST) X-Received: by 10.236.45.102 with SMTP id o66mr43608635yhb.13.1385727635680; Fri, 29 Nov 2013 04:20:35 -0800 (PST) Received: from localhost.localdomain (cpc15-aztw25-2-0-cust493.aztw.cable.virginm.net. [92.233.57.238]) by mx.google.com with ESMTPSA id m29sm101911689yho.14.2013.11.29.04.20.33 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 29 Nov 2013 04:20:35 -0800 (PST) From: Lee Jones To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, dwmw2@infradead.org Cc: linus.walleij@linaro.org, linux-mtd@lists.infradead.org, angus.clark@st.com, Lee Jones Subject: [PATCH v3 31/36] mtd: st_spi_fsm: Add the ability to read the FSM's status Date: Fri, 29 Nov 2013 12:19:20 +0000 Message-Id: <1385727565-25794-32-git-send-email-lee.jones@linaro.org> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1385727565-25794-1-git-send-email-lee.jones@linaro.org> References: <1385727565-25794-1-git-send-email-lee.jones@linaro.org> X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: lee.jones@linaro.org X-Original-Authentication-Results: mx.google.com; spf=neutral (google.com: 209.85.212.53 is neither permitted nor denied by best guess record for domain of patch+caf_=patchwork-forward=linaro.org@linaro.org) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Precedence: list Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org List-ID: X-Google-Group-Id: 836684582541 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , Signed-off-by: Lee Jones --- drivers/mtd/devices/st_spi_fsm.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c index ecb001d..1d6bd94 100644 --- a/drivers/mtd/devices/st_spi_fsm.c +++ b/drivers/mtd/devices/st_spi_fsm.c @@ -365,6 +365,30 @@ static uint8_t stfsm_wait_busy(struct stfsm *fsm) return -EIO; } +static int stfsm_read_status(struct stfsm *fsm, uint8_t cmd, + uint8_t *status) +{ + struct stfsm_seq *seq = &stfsm_seq_read_status_fifo; + uint32_t tmp; + + dev_dbg(fsm->dev, "reading STA[%s]\n", + (cmd == FLASH_CMD_RDSR) ? "1" : "2"); + + seq->seq_opc[0] = (SEQ_OPC_PADS_1 | + SEQ_OPC_CYCLES(8) | + SEQ_OPC_OPCODE(cmd)), + + stfsm_load_seq(fsm, seq); + + stfsm_read_fifo(fsm, &tmp, 4); + + *status = (uint8_t)(tmp >> 24); + + stfsm_wait_seq(fsm); + + return 0; +} + static int stfsm_wrvcr(struct stfsm *fsm, uint8_t data) { struct stfsm_seq *seq = &stfsm_seq_wrvcr;