From patchwork Sat Dec 9 11:20:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andreas Kemnade X-Patchwork-Id: 752161 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kemnade.info header.i=@kemnade.info header.b="vxvzh2tC" Received: from mail.andi.de1.cc (mail.andi.de1.cc [IPv6:2a02:c205:3004:2154::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CD18110E0; Sat, 9 Dec 2023 03:21:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=kemnade.info; s=20220719; h=Content-Transfer-Encoding:MIME-Version: Message-Id:Date:Subject:To:From:Sender:Reply-To:Cc:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=xucqkHPBJF36oXeOi/pc0yQ5CBxoZP6i5FtuLPSX75U=; b=vxvzh2tC5vuR0OgFJ3PNto2G57 mBHkdc50jbPSKeXA99iXTls69eVMEgjrbaXDimki3efaQEV+gXPXgfC9GJicy5TYubkFRyqsqrui3 c34v6Y+u+ofYQoGE7Uwiu3y4enY5fJEAYiqn0sabQFGGaZq10wpMzSUvWKMaKBKTaP2a7SgYnrDGE VWiRvmEJwMENawn640CPapiicTueA+JRtW5AOnyNxi7kWJaP2e8DNt9yzw19/x4Wm8lO5H7R5zItF Nvt+7JPsuzBOFRthNeb6VUEgGaefordUyP0u6tsOOzLShhNCFkRlfPTkKWBLnWmpO9fQ1z2lWGFIq S6do7aPQ==; Received: from p200301077700c3001a3da2fffebfd33a.dip0.t-ipconnect.de ([2003:107:7700:c300:1a3d:a2ff:febf:d33a] helo=aktux) by mail.andi.de1.cc with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1rBvOH-007CLA-3K; Sat, 09 Dec 2023 12:21:01 +0100 Received: from andi by aktux with local (Exim 4.96) (envelope-from ) id 1rBvOG-001tr9-0W; Sat, 09 Dec 2023 12:21:00 +0100 From: Andreas Kemnade To: dmitry.torokhov@gmail.com, tony@atomide.com, frank.li@vivo.com, u.kleine-koenig@pengutronix.de, Jonathan.Cameron@huawei.com, robh@kernel.org, andreas@kemnade.info, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH RESEND] Input: omap4-keypad: react on keypresses if device is runtime-suspended Date: Sat, 9 Dec 2023 12:20:58 +0100 Message-Id: <20231209112058.453030-1-andreas@kemnade.info> X-Mailer: git-send-email 2.39.2 Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 According to SWPU235AB, table 26-6, fclk is required to generate events at least on OMAP4460, so keep fclk enabled all the time the device is opened. Suggested-by: Tony Lindgren Signed-off-by: Andreas Kemnade Reviewed-by: Tony Lindgren --- Changes since RFC: - add R-by: drivers/input/keyboard/omap4-keypad.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/input/keyboard/omap4-keypad.c b/drivers/input/keyboard/omap4-keypad.c index d3f8688fdd9c3..7d83aff95617f 100644 --- a/drivers/input/keyboard/omap4-keypad.c +++ b/drivers/input/keyboard/omap4-keypad.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include #include @@ -83,6 +84,7 @@ struct omap4_keypad { bool no_autorepeat; u64 keys; unsigned short *keymap; + struct clk *fck; }; static int kbd_readl(struct omap4_keypad *keypad_data, u32 offset) @@ -211,6 +213,8 @@ static int omap4_keypad_open(struct input_dev *input) disable_irq(keypad_data->irq); + clk_prepare_enable(keypad_data->fck); + kbd_writel(keypad_data, OMAP4_KBD_CTRL, OMAP4_DEF_CTRL_NOSOFTMODE | (OMAP4_KEYPAD_PTV_DIV_128 << OMAP4_DEF_CTRL_PTV_SHIFT)); @@ -258,6 +262,7 @@ static void omap4_keypad_close(struct input_dev *input) disable_irq(keypad_data->irq); omap4_keypad_stop(keypad_data); enable_irq(keypad_data->irq); + clk_disable_unprepare(keypad_data->fck); pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev); @@ -356,6 +361,11 @@ static int omap4_keypad_probe(struct platform_device *pdev) } keypad_data->irq = irq; + keypad_data->fck = devm_clk_get(&pdev->dev, "fck"); + if (IS_ERR(keypad_data->fck)) + return dev_err_probe(&pdev->dev, PTR_ERR(keypad_data->fck), + "unable to get fck"); + mutex_init(&keypad_data->lock); platform_set_drvdata(pdev, keypad_data);