From patchwork Thu Jul 7 07:52:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mattijs Korpershoek X-Patchwork-Id: 12909197 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id DBC8FC43334 for ; Thu, 7 Jul 2022 07:53:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=i6KN7qFz99qq/ALEKkoJkPgYJrjmF3EU2O4lIDewe7o=; b=vkKVqGh8P6qOtCNDO1DVVZqdNJ LPMX/CszpCDrHQxrMCvdWwdQKOgIgWlKUNvb2gxXLp+W20TdfdT8OFj2jO/O7+P8CeIqHUmvwYtOY Gji6pjdcNPDgFfdWyI+obgAKNDvpebsmQBS9sfccPc4IY1F8qVSsRijuzeJl/YCKVdwgAF8MdMe7L +lXMewnApWW55WofwsMOTSBVNuxl2a1pZIUJ1z96jih7w8WB7JRFNzrzpRUgAfyKbM+yyOTPNPnz2 D26Wj7ZoKdCbuybM/Uvi1m8cUVQV6ZLTgY558qrM3BIsbtwR3KRTnSu2S9jOZ/FPA+2xO9D0SBzzD 2UJ0niDA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o9MJz-00Esgs-ST; Thu, 07 Jul 2022 07:53:11 +0000 Received: from mail-wr1-x42e.google.com ([2a00:1450:4864:20::42e]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1o9MJY-00Es9y-Pe for linux-mediatek@lists.infradead.org; Thu, 07 Jul 2022 07:52:48 +0000 Received: by mail-wr1-x42e.google.com with SMTP id h17so11948351wrx.0 for ; Thu, 07 Jul 2022 00:52:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=i6KN7qFz99qq/ALEKkoJkPgYJrjmF3EU2O4lIDewe7o=; b=2xWwxlQmOxFF7hkSwLKpunHGvB5x/X0vkrg/yhdWYf37lt4PSFeBuS/zCnxcpFzwrh HKDRN0N2yCvbPkyA3QiH99SXtyd4xFJu8OslBkqSP58kp4twJwZRnVn6uM9hDdYs/NmE scAllfzUBCgC3DvTT/3kcl/uX2f/j9EXSuZgOgCIc1yl3CwUa8/P9KLyx5ljtKMqLz8S Onmv+/j7i2UPWUJn52OVvG2ThAzfPtMgEhc+ZfPdB5UK55cK34jWeW2D2hH+6pCBAJjD d1ZJD+cj2n/Iox9G/muCTOiD3DOlT9eh6Xl21FCLrbFrXl/nPMqvWX5v+rtpxmk50oaV 8Kqg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=i6KN7qFz99qq/ALEKkoJkPgYJrjmF3EU2O4lIDewe7o=; b=WMpl8KrMbVbD45V/IuZCN4KmygAJnKRPMNVu36oiZ2V356fTj1Y+/+7u1OOjVrsX0P U0Pdt5uP3W3cq0lBKntutjVf/RuEWjqO4ClAngC0qYc8VDJnRYRzKeRX3WT/pf6v6UZf ThH0w9ddiOCJVmwXvRIzGTRUDpFvdGTNQkOuuiwfcEusYwqtDeyHCh/s1NJ/xjkZBm5Z GEceX6WHkQi7vq7A/ScUOxjU1kwQK6/Id09X5Ed3I66Hgo230V4OIWIVutQ0XhKDG+kW 0WwD/xC3fJhJdKrjSGP1qQ+gBz6I5XTf0Yry4+cU6h0WxBIup+GpLdDnrv8pE2JTfdvN 4iJQ== X-Gm-Message-State: AJIora/vAhzb02sWAnoT+Dl8wng6D07QMZ+5g3iPkljTmYYpYXQAo4We Hy+VC9F19kEludea+Nqg0DC7DQ== X-Google-Smtp-Source: AGRyM1soDhGfdev4LQ0mIklVU0dko84uYu7TIAzqbK7fMuXRnesTOeRRyxcpUQ5KiguXVGPAm3TRKA== X-Received: by 2002:adf:f9ce:0:b0:21d:68b7:e7af with SMTP id w14-20020adff9ce000000b0021d68b7e7afmr20416179wrr.236.1657180361035; Thu, 07 Jul 2022 00:52:41 -0700 (PDT) Received: from groot.home ([2a01:cb19:85e6:1900:334b:5931:88c6:bbd2]) by smtp.gmail.com with ESMTPSA id m16-20020adfe950000000b0021d70a871cbsm6972089wrn.32.2022.07.07.00.52.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 07 Jul 2022 00:52:40 -0700 (PDT) From: Mattijs Korpershoek To: Dmitry Torokhov Cc: Matthias Brugger , AngeloGioacchino Del Regno , Kevin Hilman , Fabien Parent , linux-input@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Mattijs Korpershoek Subject: [RESEND PATCH v3 2/2] Input: mt6779-keypad - implement row/column selection Date: Thu, 7 Jul 2022 09:52:36 +0200 Message-Id: <20220707075236.126631-3-mkorpershoek@baylibre.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220707075236.126631-1-mkorpershoek@baylibre.com> References: <20220707075236.126631-1-mkorpershoek@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220707_005244_906674_CF289D32 X-CRM114-Status: GOOD ( 12.14 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org The MediaTek keypad has a total of 6 input rows and 6 input columns. By default, rows/columns 0-2 are enabled. This is controlled by the KP_SEL register: - bits[9:4] control row selection - bits[15:10] control column selection Each bit enables the corresponding row/column number (e.g KP_SEL[4] enables ROW0) Depending on how the keypad is wired, this may result in wrong readings of the keypad state. Program the KP_SEL register to limit the key detection to n_rows, n_cols we retrieve from the device tree. Signed-off-by: Mattijs Korpershoek --- drivers/input/keyboard/mt6779-keypad.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/input/keyboard/mt6779-keypad.c b/drivers/input/keyboard/mt6779-keypad.c index bd86cb95bde3..bf447bf598fb 100644 --- a/drivers/input/keyboard/mt6779-keypad.c +++ b/drivers/input/keyboard/mt6779-keypad.c @@ -17,6 +17,11 @@ #define MTK_KPD_DEBOUNCE 0x0018 #define MTK_KPD_DEBOUNCE_MASK GENMASK(13, 0) #define MTK_KPD_DEBOUNCE_MAX_MS 256 +#define MTK_KPD_SEL 0x0020 +#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) +#define MTK_KPD_SEL_ROWMASK(r) GENMASK((r) + 3, 4) #define MTK_KPD_NUM_MEMS 5 #define MTK_KPD_NUM_BITS 136 /* 4*32+8 MEM5 only use 8 BITS */ @@ -161,6 +166,11 @@ static int mt6779_keypad_pdrv_probe(struct platform_device *pdev) regmap_write(keypad->regmap, MTK_KPD_DEBOUNCE, (debounce * (1 << 5)) & MTK_KPD_DEBOUNCE_MASK); + 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, + MTK_KPD_SEL_COLMASK(keypad->n_cols)); + keypad->clk = devm_clk_get(&pdev->dev, "kpd"); if (IS_ERR(keypad->clk)) return PTR_ERR(keypad->clk);