From patchwork Wed Sep 13 19:37:18 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Jarzmik X-Patchwork-Id: 9951917 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 89CDE6038F for ; Wed, 13 Sep 2017 19:38:35 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7497428AB6 for ; Wed, 13 Sep 2017 19:38:35 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 685DC28D7B; Wed, 13 Sep 2017 19:38:35 +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,FREEMAIL_FROM, 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 74CBD28AB6 for ; Wed, 13 Sep 2017 19:38:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751880AbdIMTiA (ORCPT ); Wed, 13 Sep 2017 15:38:00 -0400 Received: from smtp10.smtpout.orange.fr ([80.12.242.132]:52229 "EHLO smtp.smtpout.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752007AbdIMThz (ORCPT ); Wed, 13 Sep 2017 15:37:55 -0400 Received: from belgarion.home ([90.55.206.157]) by mwinf5d86 with ME id 97de1w00E3QH74y037ds7D; Wed, 13 Sep 2017 21:37:53 +0200 X-ME-Helo: belgarion.home X-ME-Auth: amFyem1pay5yb2JlcnRAb3JhbmdlLmZy X-ME-Date: Wed, 13 Sep 2017 21:37:53 +0200 X-ME-IP: 90.55.206.157 From: Robert Jarzmik To: Dmitry Torokhov , Lee Jones , Jaroslav Kysela , Takashi Iwai , Liam Girdwood , Mark Brown , Daniel Mack , Haojian Zhuang , Robert Jarzmik , Lars-Peter Clausen , Charles Keepax Cc: linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, patches@opensource.wolfsonmicro.com, alsa-devel@alsa-project.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v7 3/8] Input: wm97xx: add new AC97 bus support Date: Wed, 13 Sep 2017 21:37:18 +0200 Message-Id: <20170913193723.16234-4-robert.jarzmik@free.fr> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170913193723.16234-1-robert.jarzmik@free.fr> References: <20170913193723.16234-1-robert.jarzmik@free.fr> Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This adds support for the new AC97 bus code, which discovers the devices rather than uses platform data. As part of this discovery, it enables a multi-function device wm97xx, which supports touchscreen, battery, ADC and an audio codec. This patch adds the code to bind the touchscreen "cell" as the touchscreen driver. This was tested on the pxa architecture with a pxa270 + wm9713 + the mioa701 touchscreen. Signed-off-by: Robert Jarzmik Acked-by: Charles Keepax Acked-by: Dmitry Torokhov --- drivers/input/touchscreen/Kconfig | 2 +- drivers/input/touchscreen/wm97xx-core.c | 56 ++++++++++++++++++++++++++++++++- 2 files changed, 56 insertions(+), 2 deletions(-) diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 033599777651..22257f3e1059 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -725,7 +725,7 @@ config TOUCHSCREEN_WM831X config TOUCHSCREEN_WM97XX tristate "Support for WM97xx AC97 touchscreen controllers" - depends on AC97_BUS + depends on AC97_BUS || AC97_BUS_NEW help Say Y here if you have a Wolfson Microelectronics WM97xx touchscreen connected to your system. Note that this option diff --git a/drivers/input/touchscreen/wm97xx-core.c b/drivers/input/touchscreen/wm97xx-core.c index 39869ffdc4fa..fd714ee881f7 100644 --- a/drivers/input/touchscreen/wm97xx-core.c +++ b/drivers/input/touchscreen/wm97xx-core.c @@ -44,6 +44,7 @@ #include #include #include +#include #include #include #include @@ -766,6 +767,39 @@ static int wm97xx_remove(struct device *dev) return 0; } +static int wm97xx_mfd_probe(struct platform_device *pdev) +{ + struct wm97xx *wm; + struct wm97xx_platform_data *mfd_pdata = dev_get_platdata(&pdev->dev); + int ret; + + wm = devm_kzalloc(&pdev->dev, sizeof(struct wm97xx), GFP_KERNEL); + if (!wm) + return -ENOMEM; + + wm->dev = &pdev->dev; + wm->ac97 = mfd_pdata->ac97; + + ret = _wm97xx_probe(wm); + if (ret) + return ret; + + ret = wm97xx_add_battery(wm, mfd_pdata->batt_pdata); + if (ret < 0) + goto batt_err; + + return ret; + +batt_err: + wm97xx_unregister_touch(wm); + return ret; +} + +static int wm97xx_mfd_remove(struct platform_device *pdev) +{ + return wm97xx_remove(&pdev->dev); +} + static int __maybe_unused wm97xx_suspend(struct device *dev) { struct wm97xx *wm = dev_get_drvdata(dev); @@ -862,21 +896,41 @@ EXPORT_SYMBOL_GPL(wm97xx_unregister_mach_ops); static struct device_driver wm97xx_driver = { .name = "wm97xx-ts", +#ifdef CONFIG_AC97_BUS .bus = &ac97_bus_type, +#endif .owner = THIS_MODULE, .probe = wm97xx_probe, .remove = wm97xx_remove, .pm = &wm97xx_pm_ops, }; +static struct platform_driver wm97xx_mfd_driver = { + .driver = { + .name = "wm97xx-ts", + .pm = &wm97xx_pm_ops, + }, + .probe = wm97xx_mfd_probe, + .remove = wm97xx_mfd_remove, +}; + static int __init wm97xx_init(void) { - return driver_register(&wm97xx_driver); + int ret; + + ret = platform_driver_register(&wm97xx_mfd_driver); + if (ret) + return ret; + + if (IS_BUILTIN(CONFIG_AC97_BUS)) + ret = driver_register(&wm97xx_driver); + return ret; } static void __exit wm97xx_exit(void) { driver_unregister(&wm97xx_driver); + platform_driver_unregister(&wm97xx_mfd_driver); } module_init(wm97xx_init);