From patchwork Tue Mar 26 09:18:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikita Shubin via B4 Relay X-Patchwork-Id: 13603747 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D6EC26F079; Tue, 26 Mar 2024 09:20:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711444842; cv=none; b=T5YoM8UVU8U0Ww5BxHugjggVIuojgGF6zvVZ/MQUcnPEHgR2NhzoOMG8JqCjKStQ78NH8eP51dbh9ppKB5EEoJm4+zhPwEVGKIR7eo2WVa9inkcnzjcwLZSkoLIWen3n4uEYfB6p2O9pCzb1KFIHuqYH8/kw0oDvP1xGVDgB6+o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711444842; c=relaxed/simple; bh=z8ZWhs/5zvx3G6R8b4jbvSH/4gHgw6KY8ml450z0UoI=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=CMlmAcMqnwPTkNVi6X0tdTFKhi3QGYi5b5AZCoCYYElOnv1lY7Zme1ewZDnvVDLetCJRpRSuXQU/P0YCDunVfWxMBv7xdEdCqi/ChFbUj3vELq6LVdFuHVGERD8G1X7KjcOaS2YmrkcMS6F8BFmKNhW4TjFUmpdeaBoqmUOYk+w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gJi8j1CC; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="gJi8j1CC" Received: by smtp.kernel.org (Postfix) with ESMTPS id 249F9C4AF73; Tue, 26 Mar 2024 09:20:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711444842; bh=z8ZWhs/5zvx3G6R8b4jbvSH/4gHgw6KY8ml450z0UoI=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=gJi8j1CCVHoSsuI2+FweiNX9ydr+T5E0NwFXCk4LsdTuwEyeDKlqW9y8HvSOxvEuk nSt/v8oUw+un7CnXvf/trnLzit0y6wkPmMhk/pT1Ksg1FtJNO+98oJhRxEdAKfhWkV 927NGqxBP4XE1vH12Z0DL6nvB+zm0XfcE4nI4OlVVigccPnFp98biwo0iumA2x4hKl CYuvGXTB+qFfiH5fNQ2Do5Y2L4RBz96pGXkDdsTq4GqGg79/y1dtWlPGFY0NQLB4Ia 8t6IONFPbjP0aDS7KKSjC5audAQvbzFMHDd9XT9wMuOX66C80zAGAixx0d7klJq9ma OHWi4gBQpxPNQ== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1DCD3C54E58; Tue, 26 Mar 2024 09:20:42 +0000 (UTC) From: Nikita Shubin via B4 Relay Date: Tue, 26 Mar 2024 12:18:49 +0300 Subject: [PATCH v9 22/38] dt-bindings: input: Add Cirrus EP93xx keypad Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240326-ep93xx-v9-22-156e2ae5dfc8@maquefel.me> References: <20240326-ep93xx-v9-0-156e2ae5dfc8@maquefel.me> In-Reply-To: <20240326-ep93xx-v9-0-156e2ae5dfc8@maquefel.me> To: Dmitry Torokhov , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Alexander Sverdlin Cc: linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Arnd Bergmann , Krzysztof Kozlowski X-Mailer: b4 0.13-dev-e3e53 X-Developer-Signature: v=1; a=ed25519-sha256; t=1711444837; l=3131; i=nikita.shubin@maquefel.me; s=20230718; h=from:subject:message-id; bh=BmV75DVRygMtC4JmBqsWTX4r3uOQf/4IH1RLZhibCAg=; b=aFVKrEHsPQPgsVdie9w6RPYDqHY6i2WrBOlhHxBad4yfDnOuZZ3uO+z6TEimokKaqs1HLUdow8Kw ixGMbC4bAuU1Rxu913yhr609WkmPG/B81AMz9AeuYR8iE2hBzYpR X-Developer-Key: i=nikita.shubin@maquefel.me; a=ed25519; pk=vqf5YIUJ7BJv3EJFaNNxWZgGuMgDH6rwufTLflwU9ac= X-Endpoint-Received: by B4 Relay for nikita.shubin@maquefel.me/20230718 with auth_id=65 X-Original-From: Nikita Shubin Reply-To: nikita.shubin@maquefel.me From: Nikita Shubin Add YAML bindings for ep93xx SoC keypad. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Nikita Shubin --- .../bindings/input/cirrus,ep9307-keypad.yaml | 87 ++++++++++++++++++++++ 1 file changed, 87 insertions(+) diff --git a/Documentation/devicetree/bindings/input/cirrus,ep9307-keypad.yaml b/Documentation/devicetree/bindings/input/cirrus,ep9307-keypad.yaml new file mode 100644 index 000000000000..a0d2460c55ab --- /dev/null +++ b/Documentation/devicetree/bindings/input/cirrus,ep9307-keypad.yaml @@ -0,0 +1,87 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/input/cirrus,ep9307-keypad.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Cirrus ep93xx keypad + +maintainers: + - Alexander Sverdlin + +allOf: + - $ref: /schemas/input/matrix-keymap.yaml# + +description: + The KPP is designed to interface with a keypad matrix with 2-point contact + or 3-point contact keys. The KPP is designed to simplify the software task + of scanning a keypad matrix. The KPP is capable of detecting, debouncing, + and decoding one or multiple keys pressed simultaneously on a keypad. + +properties: + compatible: + oneOf: + - const: cirrus,ep9307-keypad + - items: + - enum: + - cirrus,ep9312-keypad + - cirrus,ep9315-keypad + - const: cirrus,ep9307-keypad + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + debounce-delay-ms: + description: | + Time in microseconds that key must be pressed or + released for state change interrupt to trigger. + + cirrus,prescale: + description: row/column counter pre-scaler load value + $ref: /schemas/types.yaml#/definitions/uint16 + maximum: 1023 + +required: + - compatible + - reg + - interrupts + - clocks + - linux,keymap + +unevaluatedProperties: false + +examples: + - | + #include + #include + keypad@800f0000 { + compatible = "cirrus,ep9307-keypad"; + reg = <0x800f0000 0x0c>; + interrupt-parent = <&vic0>; + interrupts = <29>; + clocks = <&eclk EP93XX_CLK_KEYPAD>; + pinctrl-names = "default"; + pinctrl-0 = <&keypad_default_pins>; + linux,keymap = , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + ; + }; From patchwork Tue Mar 26 09:18:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikita Shubin via B4 Relay X-Patchwork-Id: 13603748 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E79D645978; Tue, 26 Mar 2024 09:20:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711444843; cv=none; b=fhkEoQza0SRL/9SGRzTtlMZ08fEIu+TEgusrA6rhVbpHq6HaW8Ux0BATxteVy4fYDyKdsLjTLnp5iatFYuCXq4+s5I5Ki9c47TzuvxQcMPO//ofXhmE+wn0hPFgQoeMVeYxIjg+k8LDGyxiGlbM9EXZ409OyKh8f7VJ+OohieJ8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711444843; c=relaxed/simple; bh=Iu0HBC98QUjzCojE8QueMOnSNoUPY4G13lm0F+0I/Q4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=JIJGRrbTPjrxDkqW4q5RpbiH5V61n4V9i0RwvqVSm8gWJTOJC4WcBzQ0usnHYIK8YdfIsDYva4QiaQrt6pYdhwMcmreDxFiOhmjNlYzoUOmDtHN//nfhVuyKqxY96LggJSqiJCP5ehroADhA5L1CRRXMPTFIfdqVA34mpAiJ/rw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=DRwLxlwG; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="DRwLxlwG" Received: by smtp.kernel.org (Postfix) with ESMTPS id 32D6CC3279A; Tue, 26 Mar 2024 09:20:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711444842; bh=Iu0HBC98QUjzCojE8QueMOnSNoUPY4G13lm0F+0I/Q4=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=DRwLxlwGIQcHcbWDP3X30InKPqizuBAXYHWORaArHr2DpgaNL55ApDUE096sIobVt 05WKXjumFq6tPuKIoMm5PU6XCY9g6x59rp3WUJvPG2Fj3YL/R4Pa/c13O65KDV6opA o32APPXQuNCjrjBiG8nYkS4uWcoj+881C5gV48JNn+e71L9rhc7rFEYYtaZHWeQo8Y tHdyvrTtv28MCJaiZUGKFQM39zziNjnIITIaEO+d6nAz8T77SPVOkSuQlcxliO+NiI Wq9xq50Gu7oxqM8a1uu/xeBTBVH4oyVI40+SXvf2WOa4lRr2m3yec4ZF0emhRDES/1 hgD1Yd9+/l8eQ== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 29D85CD1284; Tue, 26 Mar 2024 09:20:42 +0000 (UTC) From: Nikita Shubin via B4 Relay Date: Tue, 26 Mar 2024 12:18:50 +0300 Subject: [PATCH v9 23/38] input: keypad: ep93xx: add DT support for Cirrus EP93xx Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240326-ep93xx-v9-23-156e2ae5dfc8@maquefel.me> References: <20240326-ep93xx-v9-0-156e2ae5dfc8@maquefel.me> In-Reply-To: <20240326-ep93xx-v9-0-156e2ae5dfc8@maquefel.me> To: Hartley Sweeten , Alexander Sverdlin , Russell King , Dmitry Torokhov , =?utf-8?q?Uwe_Kleine-K=C3=B6n?= =?utf-8?q?ig?= , Nikita Shubin , Linus Walleij , Andy Shevchenko , Sergey Shtylyov Cc: Damien Le Moal , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, Arnd Bergmann X-Mailer: b4 0.13-dev-e3e53 X-Developer-Signature: v=1; a=ed25519-sha256; t=1711444837; l=9166; i=nikita.shubin@maquefel.me; s=20230718; h=from:subject:message-id; bh=SQjZ1djVhqJlXzmNmoGbOKc1mquzc1zftWUCBd4webw=; b=yaDj0s5zehM36HyCLkZpVY5MkzN5oqytSkqXC98vNO18pbM946l4cNMlkjhbPPRJy7KTu1f1x5Yy jcCB/q/mDErZdaWZmO14twppTlJcsxxmuhtnMgnnqk3Y0jTcQGP5 X-Developer-Key: i=nikita.shubin@maquefel.me; a=ed25519; pk=vqf5YIUJ7BJv3EJFaNNxWZgGuMgDH6rwufTLflwU9ac= X-Endpoint-Received: by B4 Relay for nikita.shubin@maquefel.me/20230718 with auth_id=65 X-Original-From: Nikita Shubin Reply-To: nikita.shubin@maquefel.me From: Nikita Shubin - drop flags, they were not used anyway - add OF ID match table - process "autorepeat", "debounce-delay-ms", prescale from device tree - drop platform data usage and it's header - keymap goes from device tree now on Acked-by: Dmitry Torokhov Signed-off-by: Nikita Shubin --- arch/arm/mach-ep93xx/core.c | 46 --------------------- drivers/input/keyboard/ep93xx_keypad.c | 74 ++++++++++------------------------ include/linux/soc/cirrus/ep93xx.h | 4 -- 3 files changed, 22 insertions(+), 102 deletions(-) diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c index 03bce5e9d1f1..b99c46d22c4d 100644 --- a/arch/arm/mach-ep93xx/core.c +++ b/arch/arm/mach-ep93xx/core.c @@ -697,52 +697,6 @@ void __init ep93xx_register_keypad(struct ep93xx_keypad_platform_data *data) platform_device_register(&ep93xx_keypad_device); } -int ep93xx_keypad_acquire_gpio(struct platform_device *pdev) -{ - int err; - int i; - - for (i = 0; i < 8; i++) { - err = gpio_request(EP93XX_GPIO_LINE_C(i), dev_name(&pdev->dev)); - if (err) - goto fail_gpio_c; - err = gpio_request(EP93XX_GPIO_LINE_D(i), dev_name(&pdev->dev)); - if (err) - goto fail_gpio_d; - } - - /* Enable the keypad controller; GPIO ports C and D used for keypad */ - ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_KEYS | - EP93XX_SYSCON_DEVCFG_GONK); - - return 0; - -fail_gpio_d: - gpio_free(EP93XX_GPIO_LINE_C(i)); -fail_gpio_c: - for (--i; i >= 0; --i) { - gpio_free(EP93XX_GPIO_LINE_C(i)); - gpio_free(EP93XX_GPIO_LINE_D(i)); - } - return err; -} -EXPORT_SYMBOL(ep93xx_keypad_acquire_gpio); - -void ep93xx_keypad_release_gpio(struct platform_device *pdev) -{ - int i; - - for (i = 0; i < 8; i++) { - gpio_free(EP93XX_GPIO_LINE_C(i)); - gpio_free(EP93XX_GPIO_LINE_D(i)); - } - - /* Disable the keypad controller; GPIO ports C and D used for GPIO */ - ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_KEYS | - EP93XX_SYSCON_DEVCFG_GONK); -} -EXPORT_SYMBOL(ep93xx_keypad_release_gpio); - /************************************************************************* * EP93xx I2S audio peripheral handling *************************************************************************/ diff --git a/drivers/input/keyboard/ep93xx_keypad.c b/drivers/input/keyboard/ep93xx_keypad.c index 6b811d6bf625..dcbc50304a5a 100644 --- a/drivers/input/keyboard/ep93xx_keypad.c +++ b/drivers/input/keyboard/ep93xx_keypad.c @@ -6,20 +6,13 @@ * * Based on the pxa27x matrix keypad controller by Rodolfo Giometti. * - * NOTE: - * - * The 3-key reset is triggered by pressing the 3 keys in - * Row 0, Columns 2, 4, and 7 at the same time. This action can - * be disabled by setting the EP93XX_KEYPAD_DISABLE_3_KEY flag. - * - * Normal operation for the matrix does not autorepeat the key press. - * This action can be enabled by setting the EP93XX_KEYPAD_AUTOREPEAT - * flag. */ #include +#include #include #include +#include #include #include #include @@ -27,7 +20,6 @@ #include #include #include -#include #include /* @@ -61,12 +53,16 @@ #define KEY_REG_KEY1_MASK GENMASK(5, 0) #define KEY_REG_KEY1_SHIFT 0 +#define EP93XX_MATRIX_ROWS (8) +#define EP93XX_MATRIX_COLS (8) + #define EP93XX_MATRIX_SIZE (EP93XX_MATRIX_ROWS * EP93XX_MATRIX_COLS) struct ep93xx_keypad { - struct ep93xx_keypad_platform_data *pdata; struct input_dev *input_dev; struct clk *clk; + unsigned int debounce; + u16 prescale; void __iomem *mmio_base; @@ -133,23 +129,11 @@ static irqreturn_t ep93xx_keypad_irq_handler(int irq, void *dev_id) static void ep93xx_keypad_config(struct ep93xx_keypad *keypad) { - struct ep93xx_keypad_platform_data *pdata = keypad->pdata; unsigned int val = 0; - clk_set_rate(keypad->clk, pdata->clk_rate); + val |= (keypad->debounce << KEY_INIT_DBNC_SHIFT) & KEY_INIT_DBNC_MASK; - if (pdata->flags & EP93XX_KEYPAD_DISABLE_3_KEY) - val |= KEY_INIT_DIS3KY; - if (pdata->flags & EP93XX_KEYPAD_DIAG_MODE) - val |= KEY_INIT_DIAG; - if (pdata->flags & EP93XX_KEYPAD_BACK_DRIVE) - val |= KEY_INIT_BACK; - if (pdata->flags & EP93XX_KEYPAD_TEST_MODE) - val |= KEY_INIT_T2; - - val |= ((pdata->debounce << KEY_INIT_DBNC_SHIFT) & KEY_INIT_DBNC_MASK); - - val |= ((pdata->prescale << KEY_INIT_PRSCL_SHIFT) & KEY_INIT_PRSCL_MASK); + val |= (keypad->prescale << KEY_INIT_PRSCL_SHIFT) & KEY_INIT_PRSCL_MASK; __raw_writel(val, keypad->mmio_base + KEY_INIT); } @@ -220,17 +204,10 @@ static int ep93xx_keypad_resume(struct device *dev) static DEFINE_SIMPLE_DEV_PM_OPS(ep93xx_keypad_pm_ops, ep93xx_keypad_suspend, ep93xx_keypad_resume); -static void ep93xx_keypad_release_gpio_action(void *_pdev) -{ - struct platform_device *pdev = _pdev; - - ep93xx_keypad_release_gpio(pdev); -} - static int ep93xx_keypad_probe(struct platform_device *pdev) { + struct device *dev = &pdev->dev; struct ep93xx_keypad *keypad; - const struct matrix_keymap_data *keymap_data; struct input_dev *input_dev; int err; @@ -238,14 +215,6 @@ static int ep93xx_keypad_probe(struct platform_device *pdev) if (!keypad) return -ENOMEM; - keypad->pdata = dev_get_platdata(&pdev->dev); - if (!keypad->pdata) - return -EINVAL; - - keymap_data = keypad->pdata->keymap_data; - if (!keymap_data) - return -EINVAL; - keypad->irq = platform_get_irq(pdev, 0); if (keypad->irq < 0) return keypad->irq; @@ -254,19 +223,13 @@ static int ep93xx_keypad_probe(struct platform_device *pdev) if (IS_ERR(keypad->mmio_base)) return PTR_ERR(keypad->mmio_base); - err = ep93xx_keypad_acquire_gpio(pdev); - if (err) - return err; - - err = devm_add_action_or_reset(&pdev->dev, - ep93xx_keypad_release_gpio_action, pdev); - if (err) - return err; - keypad->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(keypad->clk)) return PTR_ERR(keypad->clk); + device_property_read_u32(dev, "debounce-delay-ms", &keypad->debounce); + device_property_read_u16(dev, "cirrus,prescale", &keypad->prescale); + input_dev = devm_input_allocate_device(&pdev->dev); if (!input_dev) return -ENOMEM; @@ -278,13 +241,13 @@ static int ep93xx_keypad_probe(struct platform_device *pdev) input_dev->open = ep93xx_keypad_open; input_dev->close = ep93xx_keypad_close; - err = matrix_keypad_build_keymap(keymap_data, NULL, + err = matrix_keypad_build_keymap(NULL, NULL, EP93XX_MATRIX_ROWS, EP93XX_MATRIX_COLS, keypad->keycodes, input_dev); if (err) return err; - if (keypad->pdata->flags & EP93XX_KEYPAD_AUTOREPEAT) + if (device_property_read_bool(&pdev->dev, "autorepeat")) __set_bit(EV_REP, input_dev->evbit); input_set_drvdata(input_dev, keypad); @@ -313,10 +276,17 @@ static void ep93xx_keypad_remove(struct platform_device *pdev) dev_pm_clear_wake_irq(&pdev->dev); } +static const struct of_device_id ep93xx_keypad_of_ids[] = { + { .compatible = "cirrus,ep9307-keypad" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, ep93xx_keypad_of_ids); + static struct platform_driver ep93xx_keypad_driver = { .driver = { .name = "ep93xx-keypad", .pm = pm_sleep_ptr(&ep93xx_keypad_pm_ops), + .of_match_table = ep93xx_keypad_of_ids, }, .probe = ep93xx_keypad_probe, .remove_new = ep93xx_keypad_remove, diff --git a/include/linux/soc/cirrus/ep93xx.h b/include/linux/soc/cirrus/ep93xx.h index a27447971302..8942bfaf1545 100644 --- a/include/linux/soc/cirrus/ep93xx.h +++ b/include/linux/soc/cirrus/ep93xx.h @@ -41,8 +41,6 @@ int ep93xx_pwm_acquire_gpio(struct platform_device *pdev); void ep93xx_pwm_release_gpio(struct platform_device *pdev); int ep93xx_ide_acquire_gpio(struct platform_device *pdev); void ep93xx_ide_release_gpio(struct platform_device *pdev); -int ep93xx_keypad_acquire_gpio(struct platform_device *pdev); -void ep93xx_keypad_release_gpio(struct platform_device *pdev); int ep93xx_i2s_acquire(void); void ep93xx_i2s_release(void); unsigned int ep93xx_chip_revision(void); @@ -52,8 +50,6 @@ static inline int ep93xx_pwm_acquire_gpio(struct platform_device *pdev) { return static inline void ep93xx_pwm_release_gpio(struct platform_device *pdev) {} static inline int ep93xx_ide_acquire_gpio(struct platform_device *pdev) { return 0; } static inline void ep93xx_ide_release_gpio(struct platform_device *pdev) {} -static inline int ep93xx_keypad_acquire_gpio(struct platform_device *pdev) { return 0; } -static inline void ep93xx_keypad_release_gpio(struct platform_device *pdev) {} static inline int ep93xx_i2s_acquire(void) { return 0; } static inline void ep93xx_i2s_release(void) {} static inline unsigned int ep93xx_chip_revision(void) { return 0; }