From patchwork Tue Jul 26 12:56:10 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mattijs Korpershoek X-Patchwork-Id: 12929259 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 96D1FC433EF for ; Tue, 26 Jul 2022 12:56:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238674AbiGZM4i (ORCPT ); Tue, 26 Jul 2022 08:56:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51922 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238939AbiGZM4f (ORCPT ); Tue, 26 Jul 2022 08:56:35 -0400 Received: from mail-wr1-x42a.google.com (mail-wr1-x42a.google.com [IPv6:2a00:1450:4864:20::42a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7C2B125C5C for ; Tue, 26 Jul 2022 05:56:34 -0700 (PDT) Received: by mail-wr1-x42a.google.com with SMTP id g2so11971629wru.3 for ; Tue, 26 Jul 2022 05:56:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20210112.gappssmtp.com; s=20210112; h=from:date:subject:mime-version:content-transfer-encoding:message-id :references:in-reply-to:cc; bh=tD4ST1GLkFfCdHd4u8ts0UQsGiLNPqXx0HKCsoNVuT4=; b=W3PAGeT94Vn3xX26lGfe1+Mze8r0I2iBziCUdIepLwzWyJcCogiZ1vOTm0eHPt5klL rk+K65pbpke7ZjTLRiJSZFeTSCqP1pXtcRFVHOUCGaXTCF6U1V5r1rrLbk11gAw3M42b lRdieESewrHcHaGkUS4QBvUd0j6rWb9aR6oIG0q4HH5r3RDCL0fpZS4eMnR+GO5pskrZ ldCnwO1Oi+XTVgQhz32OdRTwJORQJNeyil4llKTmwhrRBT9Aoo6nC+n6uKwDFiBDmn5d rtFhkaCCD7enY/2GIdh8vExjEntnpuY7TS2k/hqRFQoZGJvv3h2Anv9EGjjkydWvZY4J H31A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:date:subject:mime-version :content-transfer-encoding:message-id:references:in-reply-to:cc; bh=tD4ST1GLkFfCdHd4u8ts0UQsGiLNPqXx0HKCsoNVuT4=; b=6SHNctJg5WxS7f3LOCbl96KVLk5Q+x7/1Wr6+DBkpcfpTv/eHDTl8pv1fz9SqtOWZP t2qxpSfAFUivY5onnNw6iFE75cG6GpjBMlITZ34rwsawS3z5WnS7ReZNvm4omUM26Q+T +zUYuCgcgDU1H1kH8CFVH7QVWdT78h21EBvfpqe/DcMmERcJfzB8fpOlabP5M+uFkKTl jLOVUIeyZDpBPmWzr/EX7LvUscFrwoZvVypIiLHzECBI8EPZ8P/LBvXr408sJQtscwCt tR+m1yAIkeERpHaRFvmxYTsLm9c6rxVseg3jIekvWKAEc4vHe5ZTCaPwtSmDWB776cYR wlBw== X-Gm-Message-State: AJIora/a0I3edV4iEKthKe1MU/OH3xrLKziuxBeWDNu913Djmf/hK6NP Daf7sn4+Wjwx/i0YDC291Oq+DA== X-Google-Smtp-Source: AGRyM1vGYy9Kw+JfFrw9aIUXm7WvvvklWWEd28eEP4n/Z10dPqxoPZS1XDoRwK4BuI36L3XZc42XtQ== X-Received: by 2002:a05:6000:1d89:b0:21d:5655:eb72 with SMTP id bk9-20020a0560001d8900b0021d5655eb72mr10702395wrb.110.1658840193779; Tue, 26 Jul 2022 05:56:33 -0700 (PDT) Received: from [192.168.2.253] ([82.66.159.240]) by smtp.gmail.com with ESMTPSA id k1-20020adff5c1000000b0020fff0ea0a3sm14171549wrp.116.2022.07.26.05.56.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 Jul 2022 05:56:33 -0700 (PDT) From: Mattijs Korpershoek Date: Tue, 26 Jul 2022 14:56:10 +0200 Subject: [PATCH v2 5/7] Input: mt6779-keypad - support double keys matrix MIME-Version: 1.0 Message-Id: <20220720-mt8183-keypad-v2-5-6d42c357cb76@baylibre.com> References: <20220720-mt8183-keypad-v2-0-6d42c357cb76@baylibre.com> In-Reply-To: <20220720-mt8183-keypad-v2-0-6d42c357cb76@baylibre.com> Cc: linux-arm-kernel@lists.infradead.org, AngeloGioacchino Del Regno , Fabien Parent , linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, Fabien Parent X-Mailer: b4 0.10.0-dev-78725 To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org MediaTek keypad has 2 modes of detecting key events: - single key: each (row, column) can detect one key - double key: each (row, column) is a group of 2 keys Double key support exists to minimize cost, since it reduces the number of pins required for physical keys. Double key is configured by setting BIT(0) of the KP_SEL register. Enable double key matrix support based on the mediatek,keys-per-group device tree property. Signed-off-by: Mattijs Korpershoek Reviewed-by: AngeloGioacchino Del Regno diff --git a/drivers/input/keyboard/mt6779-keypad.c b/drivers/input/keyboard/mt6779-keypad.c index 39c931974bde..f70b02396de4 100644 --- a/drivers/input/keyboard/mt6779-keypad.c +++ b/drivers/input/keyboard/mt6779-keypad.c @@ -18,6 +18,7 @@ #define MTK_KPD_DEBOUNCE_MASK GENMASK(13, 0) #define MTK_KPD_DEBOUNCE_MAX_MS 256 #define MTK_KPD_SEL 0x0020 +#define MTK_KPD_SEL_DOUBLE_KP_MODE BIT(0) #define MTK_KPD_SEL_COL GENMASK(15, 10) #define MTK_KPD_SEL_ROW GENMASK(9, 4) #define MTK_KPD_SEL_COLMASK(c) GENMASK((c) + 9, 10) @@ -102,12 +103,21 @@ static void mt6779_keypad_calc_row_col_single(unsigned int key, *col = key % 9; } +static void mt6779_keypad_calc_row_col_double(unsigned int key, + unsigned int *row, + unsigned int *col) +{ + *row = key / 13; + *col = (key % 13) / 2; +} + static int mt6779_keypad_pdrv_probe(struct platform_device *pdev) { struct mt6779_keypad *keypad; void __iomem *base; int irq; u32 debounce; + u32 keys_per_group; bool wakeup; int error; @@ -156,7 +166,20 @@ static int mt6779_keypad_pdrv_probe(struct platform_device *pdev) return -EINVAL; } - keypad->calc_row_col = mt6779_keypad_calc_row_col_single; + if (device_property_read_u32(&pdev->dev, "mediatek,keys-per-group", &keys_per_group)) + keys_per_group = 1; + + switch (keys_per_group) { + case 1: + keypad->calc_row_col = mt6779_keypad_calc_row_col_single; + break; + case 2: + keypad->calc_row_col = mt6779_keypad_calc_row_col_double; + break; + default: + dev_err(&pdev->dev, "Invalid keys-per-group: %d\n", keys_per_group); + return -EINVAL; + } wakeup = device_property_read_bool(&pdev->dev, "wakeup-source"); @@ -176,6 +199,10 @@ static int mt6779_keypad_pdrv_probe(struct platform_device *pdev) regmap_write(keypad->regmap, MTK_KPD_DEBOUNCE, (debounce * (1 << 5)) & MTK_KPD_DEBOUNCE_MASK); + if (keys_per_group == 2) + regmap_update_bits(keypad->regmap, MTK_KPD_SEL, + MTK_KPD_SEL_DOUBLE_KP_MODE, MTK_KPD_SEL_DOUBLE_KP_MODE); + regmap_update_bits(keypad->regmap, MTK_KPD_SEL, MTK_KPD_SEL_ROW, MTK_KPD_SEL_ROWMASK(keypad->n_rows)); regmap_update_bits(keypad->regmap, MTK_KPD_SEL, MTK_KPD_SEL_COL,