From patchwork Wed Jan 8 06:29:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fengping Yu X-Patchwork-Id: 11322949 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3FB206C1 for ; Wed, 8 Jan 2020 06:41:03 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1B9B72075D for ; Wed, 8 Jan 2020 06:41:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Q+/IPBNa"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="o3NBuJ4F" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1B9B72075D Authentication-Results: mail.kernel.org; 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Tue, 07 Jan 2020 22:40:32 -0800 Received: from mtkmbs05n1.mediatek.inc (172.21.101.15) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 7 Jan 2020 22:31:08 -0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs05n1.mediatek.inc (172.21.101.15) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 8 Jan 2020 14:30:02 +0800 Received: from localhost.localdomain (10.15.20.246) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Wed, 8 Jan 2020 14:30:08 +0800 From: fengping yu To: Matthias Brugger , Dmitry Torokhov , Rob Herring , Mark Rutland , Catalin Marinas , "Will Deacon" , Shawn Guo , Olof Johansson , Aisheng Dong , Anson Huang , Maxime Ripard , Leonard Crestez , Dinh Nguyen , "Marcin Juszkiewicz" , Valentin Schneider , Arnd Bergmann , Andy Shevchenko , Mark Brown , Thierry Reding , YueHaibing , Stefan Agner , Jacky Bai , Marco Felsch Subject: [PATCH V2 1/2] Documentation: devicetree: bindings: input Date: Wed, 8 Jan 2020 14:29:22 +0800 Message-ID: <20200108062923.14684-2-fengping.yu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20200108062923.14684-1-fengping.yu@mediatek.com> References: <20200108062923.14684-1-fengping.yu@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200107_224042_910381_40D28361 X-CRM114-Status: GOOD ( 12.58 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, wsd_upstream@mediatek.com, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-input@vger.kernel.org, "fengping.yu" , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: "fengping.yu" Add mtk keypad device tree documentation. Change-Id: I415b76ee980784992763c768829b2dda76699dea Signed-off-by: fengping.yu --- .../devicetree/bindings/input/mtk-kpd.txt | 45 +++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/mtk-kpd.txt diff --git a/Documentation/devicetree/bindings/input/mtk-kpd.txt b/Documentation/devicetree/bindings/input/mtk-kpd.txt new file mode 100644 index 000000000000..2af81e696159 --- /dev/null +++ b/Documentation/devicetree/bindings/input/mtk-kpd.txt @@ -0,0 +1,45 @@ +* Mediatek's Keypad Controller device tree binding + +Mediatek's Keypad controller is used to interface a SoC with a matrix-type +keypad device. The keypad controller supports multiple row and column lines. +A key can be placed at each intersection of a unique row and a unique column. +The keypad controller can sense a key-press and key-release and report the +event using a interrupt to the cpu. + +Required properties: +- compatible should contain: + * "mediatek,mt6779-keypad" for MT6779 keypad + * "mediatek,kp" for common keypad + +- reg: The base address of the Keypad register bank. + +- interrupts: A single interrupt specifier. + +- mediatek,key-debounce-ms: Debounce interval in milliseconds, maximum value + is 256ms + +- mediatek,hw-map-num: Number of entries of keycode in mediatek,hw-init-map + +- mediatek,hw-init-map: An array of packed 1-cell entries containing the + equivalent of hw-map-num linux key-code. Each cell is Linux keymap of + corresponding row/col, arrange like this: + + row0col0, row0col1, row0col2,...row0col8, + row1col0, row1col1, row1col2,...row1col8, + ... + row7col0, row7col1, row7col2,...row7col8. + +Example: + + keypad: kp@10010000 { + compatible = "mediatek,mt6779-keypad", "mediatek,kp"; + reg = <0 0x10010000 0 0x1000>; + interrupts = ; + }; + + &keypad { + mediatek,key-debounce-ms = <1024>; + /*HW Keycode [0~71] -> Linux Keycode*/ + mediatek,khw-map-num = <72>; + mediatek,hw-init-map = <114 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 >; + }; From patchwork Wed Jan 8 06:29:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fengping Yu X-Patchwork-Id: 11322943 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3529C109A for ; 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Wed, 8 Jan 2020 14:30:51 +0800 Received: from localhost.localdomain (10.15.20.246) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Wed, 8 Jan 2020 14:30:14 +0800 From: fengping yu To: Matthias Brugger , Dmitry Torokhov , Rob Herring , Mark Rutland , Catalin Marinas , "Will Deacon" , Shawn Guo , Olof Johansson , Aisheng Dong , Anson Huang , Maxime Ripard , Leonard Crestez , Dinh Nguyen , "Marcin Juszkiewicz" , Valentin Schneider , Arnd Bergmann , Andy Shevchenko , Mark Brown , "Thierry Reding" , YueHaibing , Stefan Agner , Jacky Bai , Marco Felsch Subject: [PATCH V2 2/2] drivers: input: keyboard Date: Wed, 8 Jan 2020 14:29:23 +0800 Message-ID: <20200108062923.14684-3-fengping.yu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20200108062923.14684-1-fengping.yu@mediatek.com> References: <20200108062923.14684-1-fengping.yu@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200107_223449_626441_4BB5A69F X-CRM114-Status: GOOD ( 18.87 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [216.200.240.184 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, wsd_upstream@mediatek.com, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-input@vger.kernel.org, "fengping.yu" , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: "fengping.yu" add mtk keypad driver Change-Id: I20bb26ee4112f51f60476b7ff7d6e42b43f729dc Signed-off-by: fengping.yu --- .../devicetree/bindings/input/mtk-kpd.txt | 13 +- arch/arm64/configs/defconfig | 1 + drivers/input/keyboard/Kconfig | 8 + drivers/input/keyboard/Makefile | 1 + drivers/input/keyboard/mtk-kpd.c | 357 ++++++++++++++++++ 5 files changed, 377 insertions(+), 3 deletions(-) create mode 100644 drivers/input/keyboard/mtk-kpd.c diff --git a/Documentation/devicetree/bindings/input/mtk-kpd.txt b/Documentation/devicetree/bindings/input/mtk-kpd.txt index 2af81e696159..e3c17513c02c 100644 --- a/Documentation/devicetree/bindings/input/mtk-kpd.txt +++ b/Documentation/devicetree/bindings/input/mtk-kpd.txt @@ -38,8 +38,15 @@ Example: }; &keypad { - mediatek,key-debounce-ms = <1024>; + mediatek,key-debounce-ms = <32>; /*HW Keycode [0~71] -> Linux Keycode*/ - mediatek,khw-map-num = <72>; - mediatek,hw-init-map = <114 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 >; + mediatek,hw-map-num = <72>; + mediatek,hw-init-map = <114 0 0 0 0 0 0 0 0 + 0 0 0 0 0 0 0 0 0 + 0 0 0 0 0 0 0 0 0 + 0 0 0 0 0 0 0 0 0 + 0 0 0 0 0 0 0 0 0 + 0 0 0 0 0 0 0 0 0 + 0 0 0 0 0 0 0 0 0 + 0 0 0 0 0 0 0 0 0 >; }; diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index 8e05c39eab08..62bed77ec127 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -315,6 +315,7 @@ CONFIG_KEYBOARD_ADC=m CONFIG_KEYBOARD_GPIO=y CONFIG_KEYBOARD_SNVS_PWRKEY=m CONFIG_KEYBOARD_CROS_EC=y +CONFIG_KEYBOARD_MTK=y CONFIG_INPUT_TOUCHSCREEN=y CONFIG_TOUCHSCREEN_ATMEL_MXT=m CONFIG_INPUT_MISC=y diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig index 8911bc2ec42a..01747a97536b 100644 --- a/drivers/input/keyboard/Kconfig +++ b/drivers/input/keyboard/Kconfig @@ -775,4 +775,12 @@ config KEYBOARD_MTK_PMIC To compile this driver as a module, choose M here: the module will be called pmic-keys. +config KEYBOARD_MTK + tristate "MediaTek Keypad Support" + help + Say Y here if you want to use the keypad. + If unuse, say N. + To compile this driver as a module, choose M here: the + module will be called mtk-kpd. + endif diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile index 9510325c0c5d..daa654bcce6e 100644 --- a/drivers/input/keyboard/Makefile +++ b/drivers/input/keyboard/Makefile @@ -41,6 +41,7 @@ obj-$(CONFIG_KEYBOARD_MATRIX) += matrix_keypad.o obj-$(CONFIG_KEYBOARD_MAX7359) += max7359_keypad.o obj-$(CONFIG_KEYBOARD_MCS) += mcs_touchkey.o obj-$(CONFIG_KEYBOARD_MPR121) += mpr121_touchkey.o +obj-$(CONFIG_KEYBOARD_MTK) += mtk-kpd.o obj-$(CONFIG_KEYBOARD_MTK_PMIC) += mtk-pmic-keys.o obj-$(CONFIG_KEYBOARD_NEWTON) += newtonkbd.o obj-$(CONFIG_KEYBOARD_NOMADIK) += nomadik-ske-keypad.o diff --git a/drivers/input/keyboard/mtk-kpd.c b/drivers/input/keyboard/mtk-kpd.c new file mode 100644 index 000000000000..740a58b44dac --- /dev/null +++ b/drivers/input/keyboard/mtk-kpd.c @@ -0,0 +1,357 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019 MediaTek Inc. + * Author Terry Chang + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define KPD_NAME "mtk-kpd" + +#define KP_STA (0x0000) +#define KP_MEM1 (0x0004) +#define KP_MEM2 (0x0008) +#define KP_MEM3 (0x000c) +#define KP_MEM4 (0x0010) +#define KP_MEM5 (0x0014) +#define KP_DEBOUNCE (0x0018) +#define KP_SEL (0x0020) +#define KP_EN (0x0024) + +#define KP_COL0_SEL (1 << 10) +#define KP_COL1_SEL (1 << 11) +#define KP_COL2_SEL (1 << 12) + +#define KPD_DEBOUNCE_MASK ((1U << 14) - 1) +#define KPD_DOUBLE_KEY_MASK (1U << 0) + +#define KPD_NUM_MEMS 5 +#define KPD_MEM5_BITS 8 +#define KPD_NUM_KEYS 72 /* 4 * 16 + KPD_MEM5_BITS */ + +struct mtk_keypad { + struct input_dev *input_dev; + struct wakeup_source *suspend_lock; + struct tasklet_struct tasklet; + struct clk *clk; + void __iomem *base; + unsigned int irqnr; + u32 key_debounce; + u32 hw_map_num; + u32 hw_init_map[KPD_NUM_KEYS]; + u16 keymap_state[KPD_NUM_MEMS]; +}; + +/* for keymap handling */ +static void kpd_keymap_handler(unsigned long data); + +static int kpd_pdrv_probe(struct platform_device *pdev); + +static void kpd_get_keymap_state(void __iomem *kp_base, u16 state[]) +{ + state[0] = readw(kp_base + KP_MEM1); + state[1] = readw(kp_base + KP_MEM2); + state[2] = readw(kp_base + KP_MEM3); + state[3] = readw(kp_base + KP_MEM4); + state[4] = readw(kp_base + KP_MEM5); + pr_debug("kpd register = %x %x %x %x %x\n", + state[0], state[1], state[2], state[3], state[4]); +} + +static void kpd_keymap_handler(unsigned long data) +{ + int i, j; + int pressed; + u16 new_state[KPD_NUM_MEMS], change, mask; + u16 hw_keycode, keycode; + void *dest; + struct mtk_keypad *keypad = (struct mtk_keypad *)data; + + kpd_get_keymap_state(keypad->base, new_state); + + __pm_wakeup_event(keypad->suspend_lock, 500); + + for (i = 0; i < KPD_NUM_MEMS; i++) { + change = new_state[i] ^ keypad->keymap_state[i]; + if (!change) + continue; + + for (j = 0; j < 16U; j++) { + mask = (u16)1 << j; + if (!(change & mask)) + continue; + + hw_keycode = (i << 4) + j; + + if (hw_keycode >= KPD_NUM_KEYS) + continue; + + /* bit is 1: not pressed, 0: pressed */ + pressed = (new_state[i] & mask) == 0U; + pr_debug("(%s) HW keycode = %d\n", + (pressed) ? "pressed" : "released", + hw_keycode); + + keycode = keypad->hw_init_map[hw_keycode]; + if (!keycode) + continue; + input_report_key(keypad->input_dev, keycode, pressed); + input_sync(keypad->input_dev); + pr_debug("report Linux keycode = %d\n", keycode); + } + } + + dest = memcpy(keypad->keymap_state, new_state, sizeof(new_state)); + enable_irq(keypad->irqnr); +} + +static irqreturn_t kpd_irq_handler(int irq, void *dev_id) +{ + /* use _nosync to avoid deadlock */ + struct mtk_keypad *keypad = dev_id; + + disable_irq_nosync(keypad->irqnr); + tasklet_schedule(&keypad->tasklet); + return IRQ_HANDLED; +} + +static int kpd_get_dts_info(struct mtk_keypad *keypad, + struct device_node *node) +{ + int ret; + + ret = of_property_read_u32(node, "mediatek,key-debounce-ms", + &keypad->key_debounce); + if (ret) { + pr_debug("read mediatek,key-debounce-ms error.\n"); + return ret; + } + + ret = of_property_read_u32(node, "mediatek,hw-map-num", + &keypad->hw_map_num); + if (ret) { + pr_debug("read mediatek,hw-map-num error.\n"); + return ret; + } + + if (keypad->hw_map_num > KPD_NUM_KEYS) { + pr_debug("hw-map-num error, it cannot bigger than %d.\n", + KPD_NUM_KEYS); + return -EINVAL; + } + + ret = of_property_read_u32_array(node, "mediatek,hw-init-map", + keypad->hw_init_map, + keypad->hw_map_num); + + if (ret) { + pr_debug("hw-init-map was not defined in dts.\n"); + return ret; + } + + pr_debug("deb= %d\n", keypad->key_debounce); + + return 0; +} + +static int kpd_gpio_init(struct device *dev) +{ + struct pinctrl *keypad_pinctrl; + struct pinctrl_state *kpd_default; + + keypad_pinctrl = devm_pinctrl_get(dev); + if (IS_ERR(keypad_pinctrl)) { + pr_debug("Cannot find keypad_pinctrl!\n"); + + return (int)PTR_ERR(keypad_pinctrl); + } + + kpd_default = pinctrl_lookup_state(keypad_pinctrl, "default"); + if (IS_ERR(kpd_default)) { + pr_debug("Cannot find ecall_state!\n"); + + return (int)PTR_ERR(kpd_default); + } + + return pinctrl_select_state(keypad_pinctrl, + kpd_default); +} + +static int kpd_pdrv_probe(struct platform_device *pdev) +{ + struct mtk_keypad *keypad; + struct resource *res; + int i; + int err; + + keypad = devm_kzalloc(&pdev->dev, sizeof(*keypad), GFP_KERNEL); + if (!keypad) + return -ENOMEM; + + keypad->clk = devm_clk_get(&pdev->dev, "kpd"); + if (IS_ERR(keypad->clk)) { + pr_notice("get kpd-clk fail: %d\n", (int)PTR_ERR(keypad->clk)); + return (int)PTR_ERR(keypad->clk); + } + + err = clk_prepare_enable(keypad->clk); + if (err) { + pr_notice("kpd-clk prepare enable failed.\n"); + return err; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + err = -ENODEV; + goto err_unprepare_clk; + } + + keypad->base = devm_ioremap(&pdev->dev, res->start, + resource_size(res)); + if (!keypad->base) { + pr_notice("KP iomap failed\n"); + err = -EBUSY; + goto err_unprepare_clk; + } + + keypad->irqnr = irq_of_parse_and_map(pdev->dev.of_node, 0); + if (!keypad->irqnr) { + pr_notice("KP get irqnr failed\n"); + err = -ENODEV; + goto err_unprepare_clk; + } + + pr_info("kp base: 0x%p, addr:0x%p, kp irq: %d\n", + keypad->base, &keypad->base, keypad->irqnr); + err = kpd_gpio_init(&pdev->dev); + if (err) { + pr_debug("gpio init failed\n"); + goto err_unprepare_clk; + } + + err = kpd_get_dts_info(keypad, pdev->dev.of_node); + if (err) { + pr_debug("get dts info failed.\n"); + goto err_unprepare_clk; + } + + memset(keypad->keymap_state, 0xff, sizeof(keypad->keymap_state)); + + keypad->input_dev = devm_input_allocate_device(&pdev->dev); + if (!keypad->input_dev) { + pr_notice("input allocate device fail.\n"); + err = -ENOMEM; + goto err_unprepare_clk; + } + + keypad->input_dev->name = KPD_NAME; + keypad->input_dev->id.bustype = BUS_HOST; + keypad->input_dev->dev.parent = &pdev->dev; + + __set_bit(EV_KEY, keypad->input_dev->evbit); + + for (i = 0; i < KPD_NUM_KEYS; i++) { + if (keypad->hw_init_map[i]) + __set_bit(keypad->hw_init_map[i], + keypad->input_dev->keybit); + } + + err = input_register_device(keypad->input_dev); + if (err) { + pr_notice("register input device failed (%d)\n", err); + goto err_unprepare_clk; + } + + input_set_drvdata(keypad->input_dev, keypad); + + keypad->suspend_lock = wakeup_source_register(NULL, "kpd wakelock"); + if (!keypad->suspend_lock) { + pr_notice("wakeup source init failed.\n"); + err = -ENOMEM; + goto err_unregister_device; + } + + tasklet_init(&keypad->tasklet, kpd_keymap_handler, + (unsigned long)keypad); + + writew((u16)(keypad->key_debounce & KPD_DEBOUNCE_MASK), + keypad->base + KP_DEBOUNCE); + + /* register IRQ */ + err = request_irq(keypad->irqnr, kpd_irq_handler, IRQF_TRIGGER_NONE, + KPD_NAME, keypad); + if (err) { + pr_notice("register IRQ failed (%d)\n", err); + goto err_irq; + } + + pr_info("kpd_probe OK.\n"); + + return 0; + +err_irq: + tasklet_kill(&keypad->tasklet); + wakeup_source_unregister(keypad->suspend_lock); + +err_unregister_device: + input_unregister_device(keypad->input_dev); + +err_unprepare_clk: + clk_disable_unprepare(keypad->clk); + + return err; +} + +static int kpd_pdrv_remove(struct platform_device *pdev) +{ + struct mtk_keypad *keypad = platform_get_drvdata(pdev); + + tasklet_kill(&keypad->tasklet); + wakeup_source_unregister(keypad->suspend_lock); + input_unregister_device(keypad->input_dev); + clk_disable_unprepare(keypad->clk); + + return 0; +} + +static const struct of_device_id kpd_of_match[] = { + {.compatible = "mediatek,mt6779-keypad"}, + {.compatible = "mediatek,kp"}, + {}, +}; + +static struct platform_driver kpd_pdrv = { + .probe = kpd_pdrv_probe, + .remove = kpd_pdrv_remove, + .driver = { + .name = KPD_NAME, + .of_match_table = kpd_of_match, + }, +}; + +module_platform_driver(kpd_pdrv); + +MODULE_AUTHOR("Mediatek Corporation"); +MODULE_DESCRIPTION("MTK Keypad (KPD) Driver"); +MODULE_LICENSE("GPL");