From patchwork Fri Aug 9 20:27:38 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 11087583 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 F0DDF1399 for ; Fri, 9 Aug 2019 20:29:39 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DF784205C0 for ; Fri, 9 Aug 2019 20:29:39 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D37E8205F8; Fri, 9 Aug 2019 20:29:39 +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 11FEF205C0 for ; Fri, 9 Aug 2019 20:29:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726557AbfHIU3B (ORCPT ); Fri, 9 Aug 2019 16:29:01 -0400 Received: from mout.kundenserver.de ([212.227.126.133]:37939 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728252AbfHIU26 (ORCPT ); Fri, 9 Aug 2019 16:28:58 -0400 Received: from threadripper.lan ([149.172.19.189]) by mrelayeu.kundenserver.de (mreue009 [212.227.15.129]) with ESMTPA (Nemesis) id 1MekvV-1iTrd20yAf-00ajkH; Fri, 09 Aug 2019 22:28:53 +0200 From: Arnd Bergmann To: soc@kernel.org Cc: Arnd Bergmann , Dmitry Torokhov , linux-kernel@vger.kernel.org, linux-input@vger.kernel.org Subject: [PATCH 10/16] Input: remove w90x900 keyboard driver Date: Fri, 9 Aug 2019 22:27:38 +0200 Message-Id: <20190809202749.742267-11-arnd@arndb.de> X-Mailer: git-send-email 2.20.0 In-Reply-To: <20190809202749.742267-1-arnd@arndb.de> References: <20190809202749.742267-1-arnd@arndb.de> MIME-Version: 1.0 X-Provags-ID: V03:K1:B9uf6nqpqCvt0g4bgHe/VJ7Oo6T7W9PFQuUHXJDWTVtHG4RP0qf Vfoz0D9TXzkrIeFexgI+WIlXO2Ph0b8WOgm4nMKp2JG7NdYO83kO+uimIwU7tXgnv4XPEZe agiL6hHosEsJ4040lDCLURCq05wZikhAQ751INNMF62qNOasLqtJVnpqEDhIRZ4m5AW5rgc hx79LJpnFlT30eZXC4+aA== X-UI-Out-Filterresults: notjunk:1;V03:K0:ZFggz2mqPK0=:agiv6d5BGkL6g/2pK3NKpj gh83uUZUs39coUEYJBkz9q69Ly4mdR/7DOfQigWMx/hk5zZNZjQbIaeofZpa8cNY4Q7GleN4R 6bFZnci+Qk0rsKNM9RvzvQLnnvMD3mxsfoHxqjeWaiT0fyG9CEsdCFxRWlp9LA0AlPWe9mUwa g5y5Cr4OwWVrcONj7iI+iT5BmPczYfIwEPlvjtyhz8f1ECEsIPBRbvDhwAqMIPOkzQZhSvffg WXop0t3NQ6MEF3SAe4dQOvd+f5UF4228tgLw8+amBAqeUKLw8dUQFkuI539pX19CNEoPDvPwu f7A/fyH38Yi5onmB5OQMSz1ZX1RZVUW/HUCriWyBFI6ARDSMkaWuAUBK2F2iDE12mOvJydu+I ZUGaUbJPIxKH/bamkY7Tca9Slnsxj3S0rN/5ICs/QRaBZps+uJ0O67Cr1/ivfMBJax+xmqepG JKHhC5IDfSMnYa9IzUkQ3SqlTWbXQV+HqswXCsqFiJanXtbyJla0E4rmkYkl9nuMHuYBrKcc+ 9IVfc3mJuwGGMuVyQ6Je2iUwiNjbdMzGnXBMdjVoA3duBGYRL0BOz3YbTH7C0UqVenA7XAZNh 9sjNmEIAvaerksVkfRai01Owwx1JnGn64/KbB2XdXTSaJ3qwv3gugUcuh+4GKekuchao88PhB Fs9R/Y2L4+rSgsOWoVEQYatGUIoeDZ8nNe6KgfJ7X21yxrjdOC4DU8JHWzuSPrKR3AVdiWTMM uPJFO/jHqC3tLzU5zUfD4obiem3WBPcZH4+VXQ== 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 The ARM w90x900 platform is getting removed, so this driver is obsolete. Signed-off-by: Arnd Bergmann --- drivers/input/keyboard/Kconfig | 11 - drivers/input/keyboard/Makefile | 1 - drivers/input/keyboard/w90p910_keypad.c | 264 ------------------- include/linux/platform_data/keypad-w90p910.h | 16 -- 4 files changed, 292 deletions(-) delete mode 100644 drivers/input/keyboard/w90p910_keypad.c delete mode 100644 include/linux/platform_data/keypad-w90p910.h diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig index 8e9c3ea9d5e7..c1da129a4eb5 100644 --- a/drivers/input/keyboard/Kconfig +++ b/drivers/input/keyboard/Kconfig @@ -731,17 +731,6 @@ config KEYBOARD_XTKBD To compile this driver as a module, choose M here: the module will be called xtkbd. -config KEYBOARD_W90P910 - tristate "W90P910 Matrix Keypad support" - depends on ARCH_W90X900 - select INPUT_MATRIXKMAP - help - Say Y here to enable the matrix keypad on evaluation board - based on W90P910. - - To compile this driver as a module, choose M here: the - module will be called w90p910_keypad. - config KEYBOARD_CROS_EC tristate "ChromeOS EC keyboard" select INPUT_MATRIXKMAP diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile index 06a0af6efeae..9510325c0c5d 100644 --- a/drivers/input/keyboard/Makefile +++ b/drivers/input/keyboard/Makefile @@ -68,4 +68,3 @@ obj-$(CONFIG_KEYBOARD_TEGRA) += tegra-kbc.o obj-$(CONFIG_KEYBOARD_TM2_TOUCHKEY) += tm2-touchkey.o obj-$(CONFIG_KEYBOARD_TWL4030) += twl4030_keypad.o obj-$(CONFIG_KEYBOARD_XTKBD) += xtkbd.o -obj-$(CONFIG_KEYBOARD_W90P910) += w90p910_keypad.o diff --git a/drivers/input/keyboard/w90p910_keypad.c b/drivers/input/keyboard/w90p910_keypad.c deleted file mode 100644 index c88d05d6108a..000000000000 --- a/drivers/input/keyboard/w90p910_keypad.c +++ /dev/null @@ -1,264 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (c) 2008-2009 Nuvoton technology corporation. - * - * Wan ZongShun - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include - -/* Keypad Interface Control Registers */ -#define KPI_CONF 0x00 -#define KPI_3KCONF 0x04 -#define KPI_LPCONF 0x08 -#define KPI_STATUS 0x0C - -#define IS1KEY (0x01 << 16) -#define INTTR (0x01 << 21) -#define KEY0R (0x0f << 3) -#define KEY0C 0x07 -#define DEBOUNCE_BIT 0x08 -#define KSIZE0 (0x01 << 16) -#define KSIZE1 (0x01 << 17) -#define KPSEL (0x01 << 19) -#define ENKP (0x01 << 18) - -#define KGET_RAW(n) (((n) & KEY0R) >> 3) -#define KGET_COLUMN(n) ((n) & KEY0C) - -#define W90P910_NUM_ROWS 8 -#define W90P910_NUM_COLS 8 -#define W90P910_ROW_SHIFT 3 - -struct w90p910_keypad { - const struct w90p910_keypad_platform_data *pdata; - struct clk *clk; - struct input_dev *input_dev; - void __iomem *mmio_base; - int irq; - unsigned short keymap[W90P910_NUM_ROWS * W90P910_NUM_COLS]; -}; - -static void w90p910_keypad_scan_matrix(struct w90p910_keypad *keypad, - unsigned int status) -{ - struct input_dev *input_dev = keypad->input_dev; - unsigned int row = KGET_RAW(status); - unsigned int col = KGET_COLUMN(status); - unsigned int code = MATRIX_SCAN_CODE(row, col, W90P910_ROW_SHIFT); - unsigned int key = keypad->keymap[code]; - - input_event(input_dev, EV_MSC, MSC_SCAN, code); - input_report_key(input_dev, key, 1); - input_sync(input_dev); - - input_event(input_dev, EV_MSC, MSC_SCAN, code); - input_report_key(input_dev, key, 0); - input_sync(input_dev); -} - -static irqreturn_t w90p910_keypad_irq_handler(int irq, void *dev_id) -{ - struct w90p910_keypad *keypad = dev_id; - unsigned int kstatus, val; - - kstatus = __raw_readl(keypad->mmio_base + KPI_STATUS); - - val = INTTR | IS1KEY; - - if (kstatus & val) - w90p910_keypad_scan_matrix(keypad, kstatus); - - return IRQ_HANDLED; -} - -static int w90p910_keypad_open(struct input_dev *dev) -{ - struct w90p910_keypad *keypad = input_get_drvdata(dev); - const struct w90p910_keypad_platform_data *pdata = keypad->pdata; - unsigned int val, config; - - /* Enable unit clock */ - clk_enable(keypad->clk); - - val = __raw_readl(keypad->mmio_base + KPI_CONF); - val |= (KPSEL | ENKP); - val &= ~(KSIZE0 | KSIZE1); - - config = pdata->prescale | (pdata->debounce << DEBOUNCE_BIT); - - val |= config; - - __raw_writel(val, keypad->mmio_base + KPI_CONF); - - return 0; -} - -static void w90p910_keypad_close(struct input_dev *dev) -{ - struct w90p910_keypad *keypad = input_get_drvdata(dev); - - /* Disable clock unit */ - clk_disable(keypad->clk); -} - -static int w90p910_keypad_probe(struct platform_device *pdev) -{ - const struct w90p910_keypad_platform_data *pdata = - dev_get_platdata(&pdev->dev); - const struct matrix_keymap_data *keymap_data; - struct w90p910_keypad *keypad; - struct input_dev *input_dev; - struct resource *res; - int irq; - int error; - - if (!pdata) { - dev_err(&pdev->dev, "no platform data defined\n"); - return -EINVAL; - } - - keymap_data = pdata->keymap_data; - - irq = platform_get_irq(pdev, 0); - if (irq < 0) { - dev_err(&pdev->dev, "failed to get keypad irq\n"); - return -ENXIO; - } - - keypad = kzalloc(sizeof(struct w90p910_keypad), GFP_KERNEL); - input_dev = input_allocate_device(); - if (!keypad || !input_dev) { - dev_err(&pdev->dev, "failed to allocate driver data\n"); - error = -ENOMEM; - goto failed_free; - } - - keypad->pdata = pdata; - keypad->input_dev = input_dev; - keypad->irq = irq; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (res == NULL) { - dev_err(&pdev->dev, "failed to get I/O memory\n"); - error = -ENXIO; - goto failed_free; - } - - res = request_mem_region(res->start, resource_size(res), pdev->name); - if (res == NULL) { - dev_err(&pdev->dev, "failed to request I/O memory\n"); - error = -EBUSY; - goto failed_free; - } - - keypad->mmio_base = ioremap(res->start, resource_size(res)); - if (keypad->mmio_base == NULL) { - dev_err(&pdev->dev, "failed to remap I/O memory\n"); - error = -ENXIO; - goto failed_free_res; - } - - keypad->clk = clk_get(&pdev->dev, NULL); - if (IS_ERR(keypad->clk)) { - dev_err(&pdev->dev, "failed to get keypad clock\n"); - error = PTR_ERR(keypad->clk); - goto failed_free_io; - } - - /* set multi-function pin for w90p910 kpi. */ - mfp_set_groupi(&pdev->dev); - - input_dev->name = pdev->name; - input_dev->id.bustype = BUS_HOST; - input_dev->open = w90p910_keypad_open; - input_dev->close = w90p910_keypad_close; - input_dev->dev.parent = &pdev->dev; - - error = matrix_keypad_build_keymap(keymap_data, NULL, - W90P910_NUM_ROWS, W90P910_NUM_COLS, - keypad->keymap, input_dev); - if (error) { - dev_err(&pdev->dev, "failed to build keymap\n"); - goto failed_put_clk; - } - - error = request_irq(keypad->irq, w90p910_keypad_irq_handler, - 0, pdev->name, keypad); - if (error) { - dev_err(&pdev->dev, "failed to request IRQ\n"); - goto failed_put_clk; - } - - __set_bit(EV_REP, input_dev->evbit); - input_set_capability(input_dev, EV_MSC, MSC_SCAN); - input_set_drvdata(input_dev, keypad); - - /* Register the input device */ - error = input_register_device(input_dev); - if (error) { - dev_err(&pdev->dev, "failed to register input device\n"); - goto failed_free_irq; - } - - platform_set_drvdata(pdev, keypad); - return 0; - -failed_free_irq: - free_irq(irq, keypad); -failed_put_clk: - clk_put(keypad->clk); -failed_free_io: - iounmap(keypad->mmio_base); -failed_free_res: - release_mem_region(res->start, resource_size(res)); -failed_free: - input_free_device(input_dev); - kfree(keypad); - return error; -} - -static int w90p910_keypad_remove(struct platform_device *pdev) -{ - struct w90p910_keypad *keypad = platform_get_drvdata(pdev); - struct resource *res; - - free_irq(keypad->irq, keypad); - - clk_put(keypad->clk); - - input_unregister_device(keypad->input_dev); - - iounmap(keypad->mmio_base); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(res->start, resource_size(res)); - - kfree(keypad); - - return 0; -} - -static struct platform_driver w90p910_keypad_driver = { - .probe = w90p910_keypad_probe, - .remove = w90p910_keypad_remove, - .driver = { - .name = "nuc900-kpi", - }, -}; -module_platform_driver(w90p910_keypad_driver); - -MODULE_AUTHOR("Wan ZongShun "); -MODULE_DESCRIPTION("w90p910 keypad driver"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:nuc900-keypad"); diff --git a/include/linux/platform_data/keypad-w90p910.h b/include/linux/platform_data/keypad-w90p910.h deleted file mode 100644 index 206ca4ecd93f..000000000000 --- a/include/linux/platform_data/keypad-w90p910.h +++ /dev/null @@ -1,16 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef __ASM_ARCH_W90P910_KEYPAD_H -#define __ASM_ARCH_W90P910_KEYPAD_H - -#include - -extern void mfp_set_groupi(struct device *dev); - -struct w90p910_keypad_platform_data { - const struct matrix_keymap_data *keymap_data; - - unsigned int prescale; - unsigned int debounce; -}; - -#endif /* __ASM_ARCH_W90P910_KEYPAD_H */ From patchwork Fri Aug 9 20:27:39 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 11087585 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 5F5AA14E5 for ; Fri, 9 Aug 2019 20:29:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4EE8D205C0 for ; Fri, 9 Aug 2019 20:29:44 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 42E66205F8; Fri, 9 Aug 2019 20:29:44 +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 6CCBC205C0 for ; Fri, 9 Aug 2019 20:29:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726537AbfHIU3i (ORCPT ); Fri, 9 Aug 2019 16:29:38 -0400 Received: from mout.kundenserver.de ([212.227.126.135]:40763 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728492AbfHIU3A (ORCPT ); Fri, 9 Aug 2019 16:29:00 -0400 Received: from threadripper.lan ([149.172.19.189]) by mrelayeu.kundenserver.de (mreue009 [212.227.15.129]) with ESMTPA (Nemesis) id 1MqJuN-1iijTw3o8J-00nPTT; Fri, 09 Aug 2019 22:28:55 +0200 From: Arnd Bergmann To: soc@kernel.org Cc: Arnd Bergmann , Dmitry Torokhov , linux-kernel@vger.kernel.org, linux-input@vger.kernel.org Subject: [PATCH 11/16] Input: remove w90x900 touchscreen driver Date: Fri, 9 Aug 2019 22:27:39 +0200 Message-Id: <20190809202749.742267-12-arnd@arndb.de> X-Mailer: git-send-email 2.20.0 In-Reply-To: <20190809202749.742267-1-arnd@arndb.de> References: <20190809202749.742267-1-arnd@arndb.de> MIME-Version: 1.0 X-Provags-ID: V03:K1:XARDZj4unHQZqqnm8qIr2JBo+kfpLjJRuABZwZoti2Uf8k/iS8Q hqkx8bgiPdC3OojYG0rWk9pBwsvYi5pRPZ13tB3xv0FYCy9yywW3dp6OdyWzAC5Di3VX9su NC4IDqFhJ1ue7P0KNM5Gz63gjZzPgcVVxEOd9elbPsY89eHxD5bImbCChjzjhuyL1rWLBwf xV3n6DQcZ9B1BVKx7E+ZQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:n/zWiXmvdWs=:r5ntH8YCG8msTHyDrt4Jv9 2Q5qkUiP1pDpZAelr1BmgDHrjHvqy+kILu7Al4oKIG9LDC9RMjxPJZjYSmYokpAoiRkbJNTPq afNwJDViUllaY2VLYogi+U9lgUX2l7F2zgDloGu19lkYUB8snV0Cu+f5J/RxfUWQK/b/Qzx0/ oFS2Fd3zXF7BXMTZgqB49wwVN9AaWKuuFvJVch8huWey5I4WvTaBDZ1MNh0DgT6HVJ1eSwmc7 8zS2TFDu1mTsnRz4jv7iFuMp8PjVq7pq1y6kTCd6ZM+RQpvAmZOqVQcOroD4xTBcJ35Z1xYMI QvST6GXT0fEMZe2EoSXz3Qf3dx+dwqjMoKS8IbNGoptZ2ZyGoCwSqbKPTWyn9zbTSlJFdXnCY x6q9Tu0nfH7qed6Q7joQKLyxoNYYbab7QRTlMiGRNZJ9+wZ1AwH+P65eARuUbhluM6XCvjtr9 GOd28qMjPiDSpJr9kSxeHJRoGUGjzx6XRpZQteV9bLnDl/xJNtuDgmcJfArY/QL383LFoyg4B 3cHaAGxJiaiQgrndc//27yIN4CJK/Y9h7+scUHaTAGTRIHNFdrwYOmSUrkY7USgGLA2Z1Ftgo cSLfDrR+GOtriPuugvSVB3AKC7/t89ZrV+8K0yLcGGmeZIp78PYi5GN5xs8aQskKZv4XGeZIi Ree88uEz1kcUjFW4lQk0PBXyQsT7kiXFbqcbtKGGKM/QiaTsXygklRv2ZAnUJejGn/xaxVwfs 1DU5PGHC/tARswmitFVHGMFhageSLviH4Afpiw== 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 The ARM w90x900 platform is getting removed, so this driver is obsolete. Signed-off-by: Arnd Bergmann --- drivers/input/touchscreen/Kconfig | 9 - drivers/input/touchscreen/Makefile | 1 - drivers/input/touchscreen/w90p910_ts.c | 331 ------------------------- 3 files changed, 341 deletions(-) delete mode 100644 drivers/input/touchscreen/w90p910_ts.c diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index fb91f2d4049e..46ad9090493b 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -1112,15 +1112,6 @@ config TOUCHSCREEN_TSC2007_IIO or ambient light monitoring), temperature and raw input values. -config TOUCHSCREEN_W90X900 - tristate "W90P910 touchscreen driver" - depends on ARCH_W90X900 - help - Say Y here if you have a W90P910 based touchscreen. - - To compile this driver as a module, choose M here: the - module will be called w90p910_ts. - config TOUCHSCREEN_PCAP tristate "Motorola PCAP touchscreen" depends on EZX_PCAP diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 084a596a0c8b..94c6162409b3 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -102,7 +102,6 @@ wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9712) += wm9712.o wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9713) += wm9713.o obj-$(CONFIG_TOUCHSCREEN_WM97XX_MAINSTONE) += mainstone-wm97xx.o obj-$(CONFIG_TOUCHSCREEN_WM97XX_ZYLONITE) += zylonite-wm97xx.o -obj-$(CONFIG_TOUCHSCREEN_W90X900) += w90p910_ts.o obj-$(CONFIG_TOUCHSCREEN_SX8654) += sx8654.o obj-$(CONFIG_TOUCHSCREEN_TPS6507X) += tps6507x-ts.o obj-$(CONFIG_TOUCHSCREEN_ZET6223) += zet6223.o diff --git a/drivers/input/touchscreen/w90p910_ts.c b/drivers/input/touchscreen/w90p910_ts.c deleted file mode 100644 index 7893d7fa398c..000000000000 --- a/drivers/input/touchscreen/w90p910_ts.c +++ /dev/null @@ -1,331 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (c) 2008 Nuvoton technology corporation. - * - * Wan ZongShun - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -/* ADC controller bit defines */ -#define ADC_DELAY 0xf00 -#define ADC_DOWN 0x01 -#define ADC_TSC_Y (0x01 << 8) -#define ADC_TSC_X (0x00 << 8) -#define TSC_FOURWIRE (~(0x03 << 1)) -#define ADC_CLK_EN (0x01 << 28) /* ADC clock enable */ -#define ADC_READ_CON (0x01 << 12) -#define ADC_CONV (0x01 << 13) -#define ADC_SEMIAUTO (0x01 << 14) -#define ADC_WAITTRIG (0x03 << 14) -#define ADC_RST1 (0x01 << 16) -#define ADC_RST0 (0x00 << 16) -#define ADC_EN (0x01 << 17) -#define ADC_INT (0x01 << 18) -#define WT_INT (0x01 << 20) -#define ADC_INT_EN (0x01 << 21) -#define LVD_INT_EN (0x01 << 22) -#define WT_INT_EN (0x01 << 23) -#define ADC_DIV (0x04 << 1) /* div = 6 */ - -enum ts_state { - TS_WAIT_NEW_PACKET, /* We are waiting next touch report */ - TS_WAIT_X_COORD, /* We are waiting for ADC to report X coord */ - TS_WAIT_Y_COORD, /* We are waiting for ADC to report Y coord */ - TS_IDLE, /* Input device is closed, don't do anything */ -}; - -struct w90p910_ts { - struct input_dev *input; - struct timer_list timer; - struct clk *clk; - int irq_num; - void __iomem *ts_reg; - spinlock_t lock; - enum ts_state state; -}; - -static void w90p910_report_event(struct w90p910_ts *w90p910_ts, bool down) -{ - struct input_dev *dev = w90p910_ts->input; - - if (down) { - input_report_abs(dev, ABS_X, - __raw_readl(w90p910_ts->ts_reg + 0x0c)); - input_report_abs(dev, ABS_Y, - __raw_readl(w90p910_ts->ts_reg + 0x10)); - } - - input_report_key(dev, BTN_TOUCH, down); - input_sync(dev); -} - -static void w90p910_prepare_x_reading(struct w90p910_ts *w90p910_ts) -{ - unsigned long ctlreg; - - __raw_writel(ADC_TSC_X, w90p910_ts->ts_reg + 0x04); - ctlreg = __raw_readl(w90p910_ts->ts_reg); - ctlreg &= ~(ADC_WAITTRIG | WT_INT | WT_INT_EN); - ctlreg |= ADC_SEMIAUTO | ADC_INT_EN | ADC_CONV; - __raw_writel(ctlreg, w90p910_ts->ts_reg); - - w90p910_ts->state = TS_WAIT_X_COORD; -} - -static void w90p910_prepare_y_reading(struct w90p910_ts *w90p910_ts) -{ - unsigned long ctlreg; - - __raw_writel(ADC_TSC_Y, w90p910_ts->ts_reg + 0x04); - ctlreg = __raw_readl(w90p910_ts->ts_reg); - ctlreg &= ~(ADC_WAITTRIG | ADC_INT | WT_INT_EN); - ctlreg |= ADC_SEMIAUTO | ADC_INT_EN | ADC_CONV; - __raw_writel(ctlreg, w90p910_ts->ts_reg); - - w90p910_ts->state = TS_WAIT_Y_COORD; -} - -static void w90p910_prepare_next_packet(struct w90p910_ts *w90p910_ts) -{ - unsigned long ctlreg; - - ctlreg = __raw_readl(w90p910_ts->ts_reg); - ctlreg &= ~(ADC_INT | ADC_INT_EN | ADC_SEMIAUTO | ADC_CONV); - ctlreg |= ADC_WAITTRIG | WT_INT_EN; - __raw_writel(ctlreg, w90p910_ts->ts_reg); - - w90p910_ts->state = TS_WAIT_NEW_PACKET; -} - -static irqreturn_t w90p910_ts_interrupt(int irq, void *dev_id) -{ - struct w90p910_ts *w90p910_ts = dev_id; - unsigned long flags; - - spin_lock_irqsave(&w90p910_ts->lock, flags); - - switch (w90p910_ts->state) { - case TS_WAIT_NEW_PACKET: - /* - * The controller only generates interrupts when pen - * is down. - */ - del_timer(&w90p910_ts->timer); - w90p910_prepare_x_reading(w90p910_ts); - break; - - - case TS_WAIT_X_COORD: - w90p910_prepare_y_reading(w90p910_ts); - break; - - case TS_WAIT_Y_COORD: - w90p910_report_event(w90p910_ts, true); - w90p910_prepare_next_packet(w90p910_ts); - mod_timer(&w90p910_ts->timer, jiffies + msecs_to_jiffies(100)); - break; - - case TS_IDLE: - break; - } - - spin_unlock_irqrestore(&w90p910_ts->lock, flags); - - return IRQ_HANDLED; -} - -static void w90p910_check_pen_up(struct timer_list *t) -{ - struct w90p910_ts *w90p910_ts = from_timer(w90p910_ts, t, timer); - unsigned long flags; - - spin_lock_irqsave(&w90p910_ts->lock, flags); - - if (w90p910_ts->state == TS_WAIT_NEW_PACKET && - !(__raw_readl(w90p910_ts->ts_reg + 0x04) & ADC_DOWN)) { - - w90p910_report_event(w90p910_ts, false); - } - - spin_unlock_irqrestore(&w90p910_ts->lock, flags); -} - -static int w90p910_open(struct input_dev *dev) -{ - struct w90p910_ts *w90p910_ts = input_get_drvdata(dev); - unsigned long val; - - /* enable the ADC clock */ - clk_enable(w90p910_ts->clk); - - __raw_writel(ADC_RST1, w90p910_ts->ts_reg); - msleep(1); - __raw_writel(ADC_RST0, w90p910_ts->ts_reg); - msleep(1); - - /* set delay and screen type */ - val = __raw_readl(w90p910_ts->ts_reg + 0x04); - __raw_writel(val & TSC_FOURWIRE, w90p910_ts->ts_reg + 0x04); - __raw_writel(ADC_DELAY, w90p910_ts->ts_reg + 0x08); - - w90p910_ts->state = TS_WAIT_NEW_PACKET; - wmb(); - - /* set trigger mode */ - val = __raw_readl(w90p910_ts->ts_reg); - val |= ADC_WAITTRIG | ADC_DIV | ADC_EN | WT_INT_EN; - __raw_writel(val, w90p910_ts->ts_reg); - - return 0; -} - -static void w90p910_close(struct input_dev *dev) -{ - struct w90p910_ts *w90p910_ts = input_get_drvdata(dev); - unsigned long val; - - /* disable trigger mode */ - - spin_lock_irq(&w90p910_ts->lock); - - w90p910_ts->state = TS_IDLE; - - val = __raw_readl(w90p910_ts->ts_reg); - val &= ~(ADC_WAITTRIG | ADC_DIV | ADC_EN | WT_INT_EN | ADC_INT_EN); - __raw_writel(val, w90p910_ts->ts_reg); - - spin_unlock_irq(&w90p910_ts->lock); - - /* Now that interrupts are shut off we can safely delete timer */ - del_timer_sync(&w90p910_ts->timer); - - /* stop the ADC clock */ - clk_disable(w90p910_ts->clk); -} - -static int w90x900ts_probe(struct platform_device *pdev) -{ - struct w90p910_ts *w90p910_ts; - struct input_dev *input_dev; - struct resource *res; - int err; - - w90p910_ts = kzalloc(sizeof(struct w90p910_ts), GFP_KERNEL); - input_dev = input_allocate_device(); - if (!w90p910_ts || !input_dev) { - err = -ENOMEM; - goto fail1; - } - - w90p910_ts->input = input_dev; - w90p910_ts->state = TS_IDLE; - spin_lock_init(&w90p910_ts->lock); - timer_setup(&w90p910_ts->timer, w90p910_check_pen_up, 0); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - err = -ENXIO; - goto fail1; - } - - if (!request_mem_region(res->start, resource_size(res), - pdev->name)) { - err = -EBUSY; - goto fail1; - } - - w90p910_ts->ts_reg = ioremap(res->start, resource_size(res)); - if (!w90p910_ts->ts_reg) { - err = -ENOMEM; - goto fail2; - } - - w90p910_ts->clk = clk_get(&pdev->dev, NULL); - if (IS_ERR(w90p910_ts->clk)) { - err = PTR_ERR(w90p910_ts->clk); - goto fail3; - } - - input_dev->name = "W90P910 TouchScreen"; - input_dev->phys = "w90p910ts/event0"; - input_dev->id.bustype = BUS_HOST; - input_dev->id.vendor = 0x0005; - input_dev->id.product = 0x0001; - input_dev->id.version = 0x0100; - input_dev->dev.parent = &pdev->dev; - input_dev->open = w90p910_open; - input_dev->close = w90p910_close; - - input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); - input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); - - input_set_abs_params(input_dev, ABS_X, 0, 0x400, 0, 0); - input_set_abs_params(input_dev, ABS_Y, 0, 0x400, 0, 0); - - input_set_drvdata(input_dev, w90p910_ts); - - w90p910_ts->irq_num = platform_get_irq(pdev, 0); - if (request_irq(w90p910_ts->irq_num, w90p910_ts_interrupt, - 0, "w90p910ts", w90p910_ts)) { - err = -EBUSY; - goto fail4; - } - - err = input_register_device(w90p910_ts->input); - if (err) - goto fail5; - - platform_set_drvdata(pdev, w90p910_ts); - - return 0; - -fail5: free_irq(w90p910_ts->irq_num, w90p910_ts); -fail4: clk_put(w90p910_ts->clk); -fail3: iounmap(w90p910_ts->ts_reg); -fail2: release_mem_region(res->start, resource_size(res)); -fail1: input_free_device(input_dev); - kfree(w90p910_ts); - return err; -} - -static int w90x900ts_remove(struct platform_device *pdev) -{ - struct w90p910_ts *w90p910_ts = platform_get_drvdata(pdev); - struct resource *res; - - free_irq(w90p910_ts->irq_num, w90p910_ts); - del_timer_sync(&w90p910_ts->timer); - iounmap(w90p910_ts->ts_reg); - - clk_put(w90p910_ts->clk); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(res->start, resource_size(res)); - - input_unregister_device(w90p910_ts->input); - kfree(w90p910_ts); - - return 0; -} - -static struct platform_driver w90x900ts_driver = { - .probe = w90x900ts_probe, - .remove = w90x900ts_remove, - .driver = { - .name = "nuc900-ts", - }, -}; -module_platform_driver(w90x900ts_driver); - -MODULE_AUTHOR("Wan ZongShun "); -MODULE_DESCRIPTION("w90p910 touch screen driver!"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:nuc900-ts");