From patchwork Thu Dec 15 22:13:05 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marcel Hasler X-Patchwork-Id: 9476989 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 BEB52607EE for ; Thu, 15 Dec 2016 22:13:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AF9652885C for ; Thu, 15 Dec 2016 22:13:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A42B928862; Thu, 15 Dec 2016 22:13:15 +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=-6.8 required=2.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, T_DKIM_INVALID 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 E6D402885C for ; Thu, 15 Dec 2016 22:13:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756627AbcLOWNN (ORCPT ); Thu, 15 Dec 2016 17:13:13 -0500 Received: from mail-wm0-f68.google.com ([74.125.82.68]:36834 "EHLO mail-wm0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752219AbcLOWNM (ORCPT ); Thu, 15 Dec 2016 17:13:12 -0500 Received: by mail-wm0-f68.google.com with SMTP id m203so909386wma.3 for ; Thu, 15 Dec 2016 14:13:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:mime-version:content-disposition :user-agent; bh=hyJmhJkpsD+99GAuOEAsh9FN9MVZi8kg154J7jtImIQ=; b=aLGLNgYUE8OtbxvUM+uQFm+exJ6PWGM6eBvs+wWbfYde7I0D6wm3/f94IZ8wl4koIB WhowybDi4shUz3OfhxKcFKmItSdpdoOnbDwHddkJLBOIw+AI9bqwYn2Z/9ytmGHCYn+q RzJ2NERMF54Ddv0OctYx5hL0qM5GShtlCNLscz2fTVcqyjfJg3GXm5HXyTB1oUDznvxv 8RUD1uERQMvxUpX/bxf1Ku5ym395fsZNPuZ5KuRpJZ+3pYzV72YkHYj6xQIn7WLhU6Bp Nh2FXOGma7ns3/mTGJATqYFE0zXAkhTAkrPRg85c99zva8cctMyt5O1AzG+l7YGFoRoA EYWw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition:user-agent; bh=hyJmhJkpsD+99GAuOEAsh9FN9MVZi8kg154J7jtImIQ=; b=RM4PoWTdnWPXCdZERWfTCE0ZxcxQa8sQkktCc7Bl4bfYigj3q+5/GzRZeLxFtQrAzc CEf/D61yUlm46wTmogCDvo/AAoflWQYW5U/ysgwGr0S9Ck0nJxbEqyzJ66/zQAHCIVlk omQUjUnCdxH7XpucI+8lHZ53+vEobVgiZb5iaksG+P7Q+ZcPyitroZRMraeA+R8KwZuA cndtB5LquR0aD+iopS58++53CbT7kyAEa9hQCvie9RP3brHcN7yTNLvwJEWoUOYcuXI3 X9YCvqWR6YFHeMRD4v6ruV8tO8pKjpo4MNvhCkzlKe47ysujGDYD0GVvCcjG2ZjiTHY0 uIRw== X-Gm-Message-State: AIkVDXIW0jY/68JAOQKLlWYtNHMLNcFfza2MJdUlLJBD8jWrnALC+qk4/Dlyzl/FLyBgCg== X-Received: by 10.28.170.134 with SMTP id t128mr382192wme.29.1481839990392; Thu, 15 Dec 2016 14:13:10 -0800 (PST) Received: from arch-desktop ([2a02:908:670:1a80:728b:cdff:fe7f:6af7]) by smtp.gmail.com with ESMTPSA id g184sm429051wme.23.2016.12.15.14.13.09 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 15 Dec 2016 14:13:09 -0800 (PST) Date: Thu, 15 Dec 2016 23:13:05 +0100 From: Marcel Hasler To: Ezequiel Garcia , Mauro Carvalho Chehab Cc: linux-media@vger.kernel.org Subject: [PATCH v4 1/3] stk1160: Remove stk1160-mixer and setup internal AC97 codec Message-ID: <20161215221305.GA7793@arch-desktop> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.7.2 (2016-11-26) 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 automatically. Reply-To: In-Reply-To: <20161215221146.GA9398@arch-desktop> Exposing all the channels of the device's internal AC97 codec to userspace is unnecessary and confusing. Instead the driver should setup the codec with proper values. This patch removes the mixer and sets up the codec using optimal values, i.e. the same values set by the Windows driver. This also makes the device work out-of-the-box, without the need for the user to reconfigure the device every time it's plugged in. Signed-off-by: Marcel Hasler --- drivers/media/usb/stk1160/Kconfig | 10 +-- drivers/media/usb/stk1160/Makefile | 4 +- drivers/media/usb/stk1160/stk1160-ac97.c | 126 +++++++++++-------------------- drivers/media/usb/stk1160/stk1160-core.c | 5 +- drivers/media/usb/stk1160/stk1160.h | 9 +-- 5 files changed, 50 insertions(+), 104 deletions(-) diff --git a/drivers/media/usb/stk1160/Kconfig b/drivers/media/usb/stk1160/Kconfig index 95584c1..22dff4f 100644 --- a/drivers/media/usb/stk1160/Kconfig +++ b/drivers/media/usb/stk1160/Kconfig @@ -8,17 +8,9 @@ config VIDEO_STK1160_COMMON To compile this driver as a module, choose M here: the module will be called stk1160 -config VIDEO_STK1160_AC97 - bool "STK1160 AC97 codec support" - depends on VIDEO_STK1160_COMMON && SND - - ---help--- - Enables AC97 codec support for stk1160 driver. - config VIDEO_STK1160 tristate - depends on (!VIDEO_STK1160_AC97 || (SND='n') || SND) && VIDEO_STK1160_COMMON + depends on VIDEO_STK1160_COMMON default y select VIDEOBUF2_VMALLOC select VIDEO_SAA711X - select SND_AC97_CODEC if SND diff --git a/drivers/media/usb/stk1160/Makefile b/drivers/media/usb/stk1160/Makefile index dfe3e90..42d0546 100644 --- a/drivers/media/usb/stk1160/Makefile +++ b/drivers/media/usb/stk1160/Makefile @@ -1,10 +1,8 @@ -obj-stk1160-ac97-$(CONFIG_VIDEO_STK1160_AC97) := stk1160-ac97.o - stk1160-y := stk1160-core.o \ stk1160-v4l.o \ stk1160-video.o \ stk1160-i2c.o \ - $(obj-stk1160-ac97-y) + stk1160-ac97.o obj-$(CONFIG_VIDEO_STK1160) += stk1160.o diff --git a/drivers/media/usb/stk1160/stk1160-ac97.c b/drivers/media/usb/stk1160/stk1160-ac97.c index 2dd308f..502fc8e 100644 --- a/drivers/media/usb/stk1160/stk1160-ac97.c +++ b/drivers/media/usb/stk1160/stk1160-ac97.c @@ -4,6 +4,9 @@ * Copyright (C) 2012 Ezequiel Garcia * * + * Copyright (C) 2016 Marcel Hasler + * + * * Based on Easycap driver by R.M. Thomas * Copyright (C) 2010 R.M. Thomas * @@ -20,20 +23,11 @@ * */ -#include -#include -#include -#include - #include "stk1160.h" #include "stk1160-reg.h" -static struct snd_ac97 *stk1160_ac97; - -static void stk1160_write_ac97(struct snd_ac97 *ac97, u16 reg, u16 value) +static void stk1160_write_ac97(struct stk1160 *dev, u16 reg, u16 value) { - struct stk1160 *dev = ac97->private_data; - /* Set codec register address */ stk1160_write_reg(dev, STK1160_AC97_ADDR, reg); @@ -48,9 +42,9 @@ static void stk1160_write_ac97(struct snd_ac97 *ac97, u16 reg, u16 value) stk1160_write_reg(dev, STK1160_AC97CTL_0, 0x8c); } -static u16 stk1160_read_ac97(struct snd_ac97 *ac97, u16 reg) +#ifdef DEBUG +static u16 stk1160_read_ac97(struct stk1160 *dev, u16 reg) { - struct stk1160 *dev = ac97->private_data; u8 vall = 0; u8 valh = 0; @@ -70,81 +64,53 @@ static u16 stk1160_read_ac97(struct snd_ac97 *ac97, u16 reg) return (valh << 8) | vall; } -static void stk1160_reset_ac97(struct snd_ac97 *ac97) +void stk1160_ac97_dump_regs(struct stk1160 *dev) { - struct stk1160 *dev = ac97->private_data; - /* Two-step reset AC97 interface and hardware codec */ - stk1160_write_reg(dev, STK1160_AC97CTL_0, 0x94); - stk1160_write_reg(dev, STK1160_AC97CTL_0, 0x88); + u16 value; - /* Set 16-bit audio data and choose L&R channel*/ - stk1160_write_reg(dev, STK1160_AC97CTL_1 + 2, 0x01); -} + value = stk1160_read_ac97(dev, 0x12); /* CD volume */ + stk1160_dbg("0x12 == 0x%04x", value); -static struct snd_ac97_bus_ops stk1160_ac97_ops = { - .read = stk1160_read_ac97, - .write = stk1160_write_ac97, - .reset = stk1160_reset_ac97, -}; + value = stk1160_read_ac97(dev, 0x10); /* Line-in volume */ + stk1160_dbg("0x10 == 0x%04x", value); -int stk1160_ac97_register(struct stk1160 *dev) -{ - struct snd_card *card = NULL; - struct snd_ac97_bus *ac97_bus; - struct snd_ac97_template ac97_template; - int rc; + value = stk1160_read_ac97(dev, 0x0e); /* MIC volume (mono) */ + stk1160_dbg("0x0e == 0x%04x", value); - /* - * Just want a card to access ac96 controls, - * the actual capture interface will be handled by snd-usb-audio - */ - rc = snd_card_new(dev->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1, - THIS_MODULE, 0, &card); - if (rc < 0) - return rc; - - /* TODO: I'm not sure where should I get these names :-( */ - snprintf(card->shortname, sizeof(card->shortname), - "stk1160-mixer"); - snprintf(card->longname, sizeof(card->longname), - "stk1160 ac97 codec mixer control"); - strlcpy(card->driver, dev->dev->driver->name, sizeof(card->driver)); - - rc = snd_ac97_bus(card, 0, &stk1160_ac97_ops, NULL, &ac97_bus); - if (rc) - goto err; - - /* We must set private_data before calling snd_ac97_mixer */ - memset(&ac97_template, 0, sizeof(ac97_template)); - ac97_template.private_data = dev; - ac97_template.scaps = AC97_SCAP_SKIP_MODEM; - rc = snd_ac97_mixer(ac97_bus, &ac97_template, &stk1160_ac97); - if (rc) - goto err; - - dev->snd_card = card; - rc = snd_card_register(card); - if (rc) - goto err; - - return 0; - -err: - dev->snd_card = NULL; - snd_card_free(card); - return rc; + value = stk1160_read_ac97(dev, 0x16); /* Aux volume */ + stk1160_dbg("0x16 == 0x%04x", value); + + value = stk1160_read_ac97(dev, 0x1a); /* Record select */ + stk1160_dbg("0x1a == 0x%04x", value); + + value = stk1160_read_ac97(dev, 0x02); /* Master volume */ + stk1160_dbg("0x02 == 0x%04x", value); + + value = stk1160_read_ac97(dev, 0x1c); /* Record gain */ + stk1160_dbg("0x1c == 0x%04x", value); } +#endif -int stk1160_ac97_unregister(struct stk1160 *dev) +void stk1160_ac97_setup(struct stk1160 *dev) { - struct snd_card *card = dev->snd_card; - - /* - * We need to check usb_device, - * because ac97 release attempts to communicate with codec - */ - if (card && dev->udev) - snd_card_free(card); + /* Two-step reset AC97 interface and hardware codec */ + stk1160_write_reg(dev, STK1160_AC97CTL_0, 0x94); + stk1160_write_reg(dev, STK1160_AC97CTL_0, 0x8c); - return 0; + /* Set 16-bit audio data and choose L&R channel*/ + stk1160_write_reg(dev, STK1160_AC97CTL_1 + 2, 0x01); + stk1160_write_reg(dev, STK1160_AC97CTL_1 + 3, 0x00); + + /* Setup channels */ + stk1160_write_ac97(dev, 0x12, 0x8808); /* CD volume */ + stk1160_write_ac97(dev, 0x10, 0x0808); /* Line-in volume */ + stk1160_write_ac97(dev, 0x0e, 0x0008); /* MIC volume (mono) */ + stk1160_write_ac97(dev, 0x16, 0x0808); /* Aux volume */ + stk1160_write_ac97(dev, 0x1a, 0x0404); /* Record select */ + stk1160_write_ac97(dev, 0x02, 0x0000); /* Master volume */ + stk1160_write_ac97(dev, 0x1c, 0x0808); /* Record gain */ + +#ifdef DEBUG + stk1160_ac97_dump_regs(dev); +#endif } diff --git a/drivers/media/usb/stk1160/stk1160-core.c b/drivers/media/usb/stk1160/stk1160-core.c index bc02947..f3c9b8a 100644 --- a/drivers/media/usb/stk1160/stk1160-core.c +++ b/drivers/media/usb/stk1160/stk1160-core.c @@ -373,7 +373,7 @@ static int stk1160_probe(struct usb_interface *interface, /* select default input */ stk1160_select_input(dev); - stk1160_ac97_register(dev); + stk1160_ac97_setup(dev); rc = stk1160_video_register(dev); if (rc < 0) @@ -411,9 +411,6 @@ static void stk1160_disconnect(struct usb_interface *interface) /* Here is the only place where isoc get released */ stk1160_uninit_isoc(dev); - /* ac97 unregister needs to be done before usb_device is cleared */ - stk1160_ac97_unregister(dev); - stk1160_clear_queue(dev); video_unregister_device(&dev->vdev); diff --git a/drivers/media/usb/stk1160/stk1160.h b/drivers/media/usb/stk1160/stk1160.h index 1ed1cc4..e85e12e 100644 --- a/drivers/media/usb/stk1160/stk1160.h +++ b/drivers/media/usb/stk1160/stk1160.h @@ -197,11 +197,4 @@ int stk1160_read_reg_req_len(struct stk1160 *dev, u8 req, u16 reg, void stk1160_select_input(struct stk1160 *dev); /* Provided by stk1160-ac97.c */ -#ifdef CONFIG_VIDEO_STK1160_AC97 -int stk1160_ac97_register(struct stk1160 *dev); -int stk1160_ac97_unregister(struct stk1160 *dev); -#else -static inline int stk1160_ac97_register(struct stk1160 *dev) { return 0; } -static inline int stk1160_ac97_unregister(struct stk1160 *dev) { return 0; } -#endif - +void stk1160_ac97_setup(struct stk1160 *dev);