From patchwork Tue May 21 06:33:42 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Crosthwaite X-Patchwork-Id: 245203 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id C1B142C00A8 for ; Tue, 21 May 2013 16:38:28 +1000 (EST) Received: from localhost ([::1]:55912 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UegDL-0002YL-15 for incoming@patchwork.ozlabs.org; Tue, 21 May 2013 02:38:27 -0400 Received: from eggs.gnu.org ([208.118.235.92]:52366) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UegCx-0002U7-Eh for qemu-devel@nongnu.org; Tue, 21 May 2013 02:38:05 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UegCw-0005K8-5g for qemu-devel@nongnu.org; Tue, 21 May 2013 02:38:03 -0400 Received: from mail-pa0-f44.google.com ([209.85.220.44]:61896) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UegCw-0005K2-02 for qemu-devel@nongnu.org; Tue, 21 May 2013 02:38:02 -0400 Received: by mail-pa0-f44.google.com with SMTP id jh10so387923pab.3 for ; Mon, 20 May 2013 23:38:01 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=sender:from:to:cc:subject:date:message-id:x-mailer:in-reply-to :references:x-gm-message-state; bh=7uZvooieM5ohtWkU/wUTDi9yuZ8ESpNaAs+Y93OeNfc=; b=nUckSN9JosCQQ6AkkCxgzKQXJ9mU5hbdPJWSQdyL5e+aQkg/r4jFCVxMffgKFr7IPX 8s6amlgGIUP7HqieHlBhexeDkqZKOQtH4jLv9vbd/bmtf85J3jxWaWMQUvn1XzglluUe K2VvN0cf2uiRa6IiHm41MYhRFCqi9V18HvX9ZwLrtCZv3uRg8oAtPysM+5tDFZG1Vzld YRJvj2snUoaJJ0arY5MiNuRkWtOAwP69v5zC5OfyUx8QsOFvRQTVUgtSlb4vpkmkmsPT QWhM4rzXwpHP8zzzMcRzZl20QLFVzcWAsSKP9RM59G4JCmLaf+sZAWrUJEShA1YYbmn2 2yOg== X-Received: by 10.67.1.37 with SMTP id bd5mr1573084pad.194.1369118281103; Mon, 20 May 2013 23:38:01 -0700 (PDT) Received: from localhost ([203.126.243.116]) by mx.google.com with ESMTPSA id nt2sm1460887pbc.17.2013.05.20.23.37.57 for (version=TLSv1.1 cipher=RC4-SHA bits=128/128); Mon, 20 May 2013 23:38:00 -0700 (PDT) From: peter.crosthwaite@xilinx.com To: peter.maydell@linaro.org, qemu-devel@nongnu.org Date: Tue, 21 May 2013 16:33:42 +1000 Message-Id: X-Mailer: git-send-email 1.8.3.rc1.44.gb387c77.dirty In-Reply-To: References: X-Gm-Message-State: ALoCoQnXZj0+Bii8s8scgFTw3HAOWR+lVA13ye3IqzSJwJCWIUAYChHTcir0qYRBXxILbgdcwq5P X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.85.220.44 Cc: edgar.iglesias@gmail.com Subject: [Qemu-devel] [PATCH arm-devs v4 07/15] xilinx_spips: Add automatic start support X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Peter Crosthwaite SPI has a mode where it automatically starts based on tx fifo occupancy. Implemented. Signed-off-by: Peter Crosthwaite Reviewed-by: Peter Maydell Reviewed-by: Edgar E. Iglesias --- hw/ssi/xilinx_spips.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/hw/ssi/xilinx_spips.c b/hw/ssi/xilinx_spips.c index cf4c43e..0c04ec9 100644 --- a/hw/ssi/xilinx_spips.c +++ b/hw/ssi/xilinx_spips.c @@ -451,7 +451,8 @@ static void xilinx_spips_write(void *opaque, hwaddr addr, } s->regs[addr] = (s->regs[addr] & ~mask) | (value & mask); no_reg_update: - if (man_start_com) { + if ((man_start_com && s->regs[R_CONFIG] & MAN_START_EN) || + (fifo8_is_empty(&s->tx_fifo) && s->regs[R_CONFIG] & MAN_START_EN)) { xilinx_spips_flush_txfifo(s); } xilinx_spips_update_ixr(s);