From patchwork Wed May 15 15:20:43 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Brandt X-Patchwork-Id: 10944933 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BA40B76 for ; Wed, 15 May 2019 15:38:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A7BD228306 for ; Wed, 15 May 2019 15:38:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9BFC12832B; Wed, 15 May 2019 15:38:08 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0F44427861 for ; Wed, 15 May 2019 15:38:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727989AbfEOPiH (ORCPT ); Wed, 15 May 2019 11:38:07 -0400 Received: from pbmsgap02.intersil.com ([192.157.179.202]:51406 "EHLO pbmsgap02.intersil.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726335AbfEOPiH (ORCPT ); Wed, 15 May 2019 11:38:07 -0400 X-Greylist: delayed 1000 seconds by postgrey-1.27 at vger.kernel.org; Wed, 15 May 2019 11:38:06 EDT Received: from pps.filterd (pbmsgap02.intersil.com [127.0.0.1]) by pbmsgap02.intersil.com (8.16.0.27/8.16.0.27) with SMTP id x4FFCHu1019293; Wed, 15 May 2019 11:22:06 -0400 Received: from pbmxdp02.intersil.corp (pbmxdp02.pb.intersil.com [132.158.200.223]) by pbmsgap02.intersil.com with ESMTP id 2sdrjcb6hc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Wed, 15 May 2019 11:22:05 -0400 Received: from pbmxdp01.intersil.corp (132.158.200.222) by pbmxdp02.intersil.corp (132.158.200.223) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.1.1531.3; Wed, 15 May 2019 11:22:04 -0400 Received: from localhost.localdomain (132.158.202.108) by pbmxdp01.intersil.corp (132.158.200.222) with Microsoft SMTP Server id 15.1.1531.3 via Frontend Transport; Wed, 15 May 2019 11:22:03 -0400 From: Chris Brandt To: Rob Herring , Mark Rutland , Greg Kroah-Hartman , Simon Horman , Yoshihiro Shimoda CC: Geert Uytterhoeven , Sergei Shtylyov , Chunfeng Yun , Kuninori Morimoto , , , , "Chris Brandt" Subject: [PATCH v4 08/13] usb: renesas_usbhs: support byte addressable CFIFO Date: Wed, 15 May 2019 10:20:43 -0500 Message-ID: <20190515152048.42363-9-chris.brandt@renesas.com> X-Mailer: git-send-email 2.16.1 In-Reply-To: <20190515152048.42363-1-chris.brandt@renesas.com> References: <20190515152048.42363-1-chris.brandt@renesas.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-05-15_10:,, signatures=0 X-Proofpoint-Spam-Details: rule=junk_notspam policy=junk score=0 suspectscore=2 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=965 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1905150094 X-Proofpoint-Spam-Reason: mlx Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Some SoC have a CFIFO register that is byte addressable. This means when the CFIFO access is set to 32-bit, you can write 8-bit values to addresses CFIFO+0, CFIFO+1, CFIFO+2, CFIFO+3. Signed-off-by: Chris Brandt Reviewed-by: Yoshihiro Shimoda Reviewed-by: Simon Horman --- v3: * added reviewed-by v2: * options ahve moved from flags to param --- drivers/usb/renesas_usbhs/fifo.c | 9 +++++++-- include/linux/usb/renesas_usbhs.h | 1 + 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c index 39fa2fc1b8b7..452b456ac24e 100644 --- a/drivers/usb/renesas_usbhs/fifo.c +++ b/drivers/usb/renesas_usbhs/fifo.c @@ -543,8 +543,13 @@ static int usbhsf_pio_try_push(struct usbhs_pkt *pkt, int *is_done) } /* the rest operation */ - for (i = 0; i < len; i++) - iowrite8(buf[i], addr + (0x03 - (i & 0x03))); + if (usbhs_get_dparam(priv, cfifo_byte_addr)) { + for (i = 0; i < len; i++) + iowrite8(buf[i], addr + (i & 0x03)); + } else { + for (i = 0; i < len; i++) + iowrite8(buf[i], addr + (0x03 - (i & 0x03))); + } /* * variable update diff --git a/include/linux/usb/renesas_usbhs.h b/include/linux/usb/renesas_usbhs.h index 9097a38fcda8..87043fd21d54 100644 --- a/include/linux/usb/renesas_usbhs.h +++ b/include/linux/usb/renesas_usbhs.h @@ -191,6 +191,7 @@ struct renesas_usbhs_driver_param { u32 has_usb_dmac:1; /* for USB-DMAC */ u32 runtime_pwctrl:1; u32 has_cnen:1; + u32 cfifo_byte_addr:1; /* CFIFO is byte addressable */ #define USBHS_USB_DMAC_XFER_SIZE 32 /* hardcode the xfer size */ };