From patchwork Thu Jun 1 20:58:27 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 9761195 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 5684D6038E for ; Thu, 1 Jun 2017 21:00:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4672028533 for ; Thu, 1 Jun 2017 21:00:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3B2BF2853D; Thu, 1 Jun 2017 21:00:56 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable 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 E742628531 for ; Thu, 1 Jun 2017 21:00:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751169AbdFAU7G (ORCPT ); Thu, 1 Jun 2017 16:59:06 -0400 Received: from mx2.suse.de ([195.135.220.15]:42388 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751050AbdFAU7F (ORCPT ); Thu, 1 Jun 2017 16:59:05 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id F0E83ABB1; Thu, 1 Jun 2017 20:59:03 +0000 (UTC) From: Takashi Iwai To: alsa-devel@alsa-project.org Cc: Takashi Sakamoto , Mark Brown , Hans Verkuil , linux-media@vger.kernel.org, Felipe Balbi , Greg Kroah-Hartman , linux-usb@vger.kernel.org Subject: [PATCH v2 04/27] ALSA: es1938: Convert to the new PCM copy ops Date: Thu, 1 Jun 2017 22:58:27 +0200 Message-Id: <20170601205850.24993-5-tiwai@suse.de> X-Mailer: git-send-email 2.13.0 In-Reply-To: <20170601205850.24993-1-tiwai@suse.de> References: <20170601205850.24993-1-tiwai@suse.de> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Replace the copy ops with the new copy_user and copy_kernel ops. It's used only for a capture stream (for some hardware workaround), thus we need no silence operation. Signed-off-by: Takashi Iwai --- sound/pci/es1938.c | 33 +++++++++++++++++++++++++-------- 1 file changed, 25 insertions(+), 8 deletions(-) diff --git a/sound/pci/es1938.c b/sound/pci/es1938.c index e8d943071a8c..a544cd52f73a 100644 --- a/sound/pci/es1938.c +++ b/sound/pci/es1938.c @@ -839,15 +839,12 @@ static snd_pcm_uframes_t snd_es1938_playback_pointer(struct snd_pcm_substream *s } static int snd_es1938_capture_copy(struct snd_pcm_substream *substream, - int channel, - snd_pcm_uframes_t pos, - void __user *dst, - snd_pcm_uframes_t count) + int channel, unsigned long pos, + void __user *dst, unsigned long count) { struct snd_pcm_runtime *runtime = substream->runtime; struct es1938 *chip = snd_pcm_substream_chip(substream); - pos <<= chip->dma1_shift; - count <<= chip->dma1_shift; + if (snd_BUG_ON(pos + count > chip->dma1_size)) return -EINVAL; if (pos + count < chip->dma1_size) { @@ -856,12 +853,31 @@ static int snd_es1938_capture_copy(struct snd_pcm_substream *substream, } else { if (copy_to_user(dst, runtime->dma_area + pos + 1, count - 1)) return -EFAULT; - if (put_user(runtime->dma_area[0], ((unsigned char __user *)dst) + count - 1)) + if (put_user(runtime->dma_area[0], + ((unsigned char __user *)dst) + count - 1)) return -EFAULT; } return 0; } +static int snd_es1938_capture_copy_kernel(struct snd_pcm_substream *substream, + int channel, unsigned long pos, + void *dst, unsigned long count) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct es1938 *chip = snd_pcm_substream_chip(substream); + + if (snd_BUG_ON(pos + count > chip->dma1_size)) + return -EINVAL; + if (pos + count < chip->dma1_size) { + memcpy(dst, runtime->dma_area + pos + 1, count); + } else { + memcpy(dst, runtime->dma_area + pos + 1, count - 1); + runtime->dma_area[0] = *((unsigned char *)dst + count - 1); + } + return 0; +} + /* * buffer management */ @@ -1012,7 +1028,8 @@ static const struct snd_pcm_ops snd_es1938_capture_ops = { .prepare = snd_es1938_capture_prepare, .trigger = snd_es1938_capture_trigger, .pointer = snd_es1938_capture_pointer, - .copy = snd_es1938_capture_copy, + .copy_user = snd_es1938_capture_copy, + .copy_kernel = snd_es1938_capture_copy_kernel, }; static int snd_es1938_new_pcm(struct es1938 *chip, int device)