From patchwork Mon Jun 19 07:27:03 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Jarzmik X-Patchwork-Id: 9795337 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 A58706020B for ; Mon, 19 Jun 2017 07:28:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A493727FAD for ; Mon, 19 Jun 2017 07:28:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 992C327FC0; Mon, 19 Jun 2017 07:28:43 +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 11A1627FAD for ; Mon, 19 Jun 2017 07:28:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753765AbdFSH2e (ORCPT ); Mon, 19 Jun 2017 03:28:34 -0400 Received: from smtp03.smtpout.orange.fr ([80.12.242.125]:20116 "EHLO smtp.smtpout.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753712AbdFSH2a (ORCPT ); Mon, 19 Jun 2017 03:28:30 -0400 Received: from belgarion.home ([109.220.219.63]) by mwinf5d26 with ME id aXUG1v00S1Ng3jh03XUT1f; Mon, 19 Jun 2017 09:28:28 +0200 X-ME-Helo: belgarion.home X-ME-Date: Mon, 19 Jun 2017 09:28:28 +0200 X-ME-IP: 109.220.219.63 From: Robert Jarzmik To: Dmitry Torokhov , Lee Jones , Jaroslav Kysela , Takashi Iwai , Daniel Mack , Haojian Zhuang , Robert Jarzmik , Liam Girdwood , Mark Brown , 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 v2 06/12] Input: wm97xx: add new AC97 bus support Date: Mon, 19 Jun 2017 09:27:03 +0200 Message-Id: <1497857229-12049-7-git-send-email-robert.jarzmik@free.fr> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1497857229-12049-1-git-send-email-robert.jarzmik@free.fr> References: <1497857229-12049-1-git-send-email-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);