From patchwork Sat Oct 11 05:06:53 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matt Ranostay X-Patchwork-Id: 5068291 Return-Path: X-Original-To: patchwork-linux-input@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id EAEC2C11AD for ; Sat, 11 Oct 2014 05:06:14 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C92772020E for ; Sat, 11 Oct 2014 05:06:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 80524201F2 for ; Sat, 11 Oct 2014 05:06:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750762AbaJKFGJ (ORCPT ); Sat, 11 Oct 2014 01:06:09 -0400 Received: from mail-pd0-f176.google.com ([209.85.192.176]:52346 "EHLO mail-pd0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751244AbaJKFGH (ORCPT ); Sat, 11 Oct 2014 01:06:07 -0400 Received: by mail-pd0-f176.google.com with SMTP id fp1so2731736pdb.7 for ; Fri, 10 Oct 2014 22:06:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=u5mkeF8jlLZXdjyayCItbiNX63+KMKemmS5ZU1t/jxs=; b=znNiO78MoU2gfia2wKGp182Wtu2y2MVYuxyBstfGah2Z+cd34f2cs8T4Ps4i8lbk+Q POnKzXUB3qRgWdrJ+8YT9a4qZd1/LFYyJ69qPv2k1rMEoK7qgi63YYAP8DHiglsVqwjf yY91fEJbeESHOhWfXQoYSd+amAQrAzVxH70VDwr8I51YggpUPMKGq+QvqU3H1ucB3qNa pLrxrkKyPRlkQjZKpbsZfbTpQb9oZYWn6L3E3gI37n8TSi2RPEvvBgLXbk5z+QP2cQvP Th/IlXDOlEzaYnJH/Cv+ThDHDDDpkBkucA2XOfZmNEWOkJWCZSv7fvUVZRz4pi8un1Do mnEQ== X-Received: by 10.70.131.199 with SMTP id oo7mr9778177pdb.95.1413003966970; Fri, 10 Oct 2014 22:06:06 -0700 (PDT) Received: from niteshade.hsd1.or.comcast.net (c-50-186-57-65.hsd1.or.comcast.net. [50.186.57.65]) by mx.google.com with ESMTPSA id nx6sm5052533pab.46.2014.10.10.22.06.06 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 10 Oct 2014 22:06:06 -0700 (PDT) From: Matt Ranostay To: dmitry.torokhov@gmail.com, galak@codeaurora.org, zonque@gmail.com Cc: linux-input@vger.kernel.org, devicetree@vger.kernel.org, Matt Ranostay Subject: [PATCH v6 2/3] cap11xx: Add support for various cap11xx devices Date: Fri, 10 Oct 2014 22:06:53 -0700 Message-Id: <1413004014-23807-3-git-send-email-mranostay@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1413004014-23807-1-git-send-email-mranostay@gmail.com> References: <1413004014-23807-1-git-send-email-mranostay@gmail.com> Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Spam-Status: No, score=-7.8 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Several other variants of the cap11xx device exists with a varying number of capacitance detection channels. Add support for creating the channels dynamically. Signed-off-by: Matt Ranostay --- .../devicetree/bindings/input/cap11xx.txt | 3 +- drivers/input/keyboard/cap11xx.c | 62 ++++++++++++++-------- 2 files changed, 42 insertions(+), 23 deletions(-) diff --git a/Documentation/devicetree/bindings/input/cap11xx.txt b/Documentation/devicetree/bindings/input/cap11xx.txt index 738f5f3..8031aa5 100644 --- a/Documentation/devicetree/bindings/input/cap11xx.txt +++ b/Documentation/devicetree/bindings/input/cap11xx.txt @@ -7,9 +7,10 @@ Required properties: compatible: Must be on the following, depending on the model: "microchip,cap1106" + "microchip,cap1126" + "microchip,cap1188" reg: The I2C slave address of the device. - Only 0x28 is valid. interrupts: Property describing the interrupt line the device's ALERT#/CM_IRQ# pin is connected to. diff --git a/drivers/input/keyboard/cap11xx.c b/drivers/input/keyboard/cap11xx.c index 0da2e83..91effe5 100644 --- a/drivers/input/keyboard/cap11xx.c +++ b/drivers/input/keyboard/cap11xx.c @@ -1,7 +1,6 @@ /* * Input driver for Microchip CAP11xx based capacitive touch sensors * - * * (c) 2014 Daniel Mack * * This program is free software; you can redistribute it and/or modify @@ -54,8 +53,6 @@ #define CAP11XX_REG_MANUFACTURER_ID 0xfe #define CAP11XX_REG_REVISION 0xff -#define CAP11XX_NUM_CHN 6 -#define CAP11XX_PRODUCT_ID 0x55 #define CAP11XX_MANUFACTURER_ID 0x5d struct cap11xx_priv { @@ -63,7 +60,24 @@ struct cap11xx_priv { struct input_dev *idev; /* config */ - unsigned short keycodes[CAP11XX_NUM_CHN]; + u32 keycodes[]; +}; + +struct cap11xx_hw_model { + uint8_t product_id; + unsigned int num_channels; +}; + +enum { + CAP1106, + CAP1126, + CAP1188, +}; + +struct cap11xx_hw_model cap11xx_devices[] = { + [CAP1106] = { .product_id = 0x55, .num_channels = 6 }, + [CAP1126] = { .product_id = 0x53, .num_channels = 6 }, + [CAP1188] = { .product_id = 0x50, .num_channels = 8 }, }; static const struct reg_default cap11xx_reg_defaults[] = { @@ -150,7 +164,7 @@ static irqreturn_t cap11xx_thread_func(int irq_num, void *data) if (ret < 0) goto out; - for (i = 0; i < CAP11XX_NUM_CHN; i++) + for (i = 0; i < priv->idev->keycodemax; i++) input_report_key(priv->idev, priv->keycodes[i], status & (1 << i)); @@ -187,14 +201,19 @@ static int cap11xx_i2c_probe(struct i2c_client *i2c_client, struct device *dev = &i2c_client->dev; struct cap11xx_priv *priv; struct device_node *node; + struct cap11xx_hw_model *cap = &cap11xx_devices[id->driver_data]; int i, error, irq, gain = 0; unsigned int val, rev; - u32 gain32, keycodes[CAP11XX_NUM_CHN]; + u32 gain32; - priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + priv = devm_kzalloc(dev, + sizeof(*priv) + cap->num_channels * sizeof(u32), + GFP_KERNEL); if (!priv) return -ENOMEM; + BUG_ON(!cap->num_channels); + priv->regmap = devm_regmap_init_i2c(i2c_client, &cap11xx_regmap_config); if (IS_ERR(priv->regmap)) return PTR_ERR(priv->regmap); @@ -203,9 +222,9 @@ static int cap11xx_i2c_probe(struct i2c_client *i2c_client, if (error) return error; - if (val != CAP11XX_PRODUCT_ID) { + if (val != cap->product_id) { dev_err(dev, "Product ID: Got 0x%02x, expected 0x%02x\n", - val, CAP11XX_PRODUCT_ID); + val, cap->product_id); return -ENODEV; } @@ -234,17 +253,12 @@ static int cap11xx_i2c_probe(struct i2c_client *i2c_client, dev_err(dev, "Invalid sensor-gain value %d\n", gain32); } - BUILD_BUG_ON(ARRAY_SIZE(keycodes) != ARRAY_SIZE(priv->keycodes)); - /* Provide some useful defaults */ - for (i = 0; i < ARRAY_SIZE(keycodes); i++) - keycodes[i] = KEY_A + i; + for (i = 0; i < cap->num_channels; i++) + priv->keycodes[i] = KEY_A + i; of_property_read_u32_array(node, "linux,keycodes", - keycodes, ARRAY_SIZE(keycodes)); - - for (i = 0; i < ARRAY_SIZE(keycodes); i++) - priv->keycodes[i] = keycodes[i]; + priv->keycodes, cap->num_channels); error = regmap_update_bits(priv->regmap, CAP11XX_REG_MAIN_CONTROL, CAP11XX_REG_MAIN_CONTROL_GAIN_MASK, @@ -268,17 +282,17 @@ static int cap11xx_i2c_probe(struct i2c_client *i2c_client, if (of_property_read_bool(node, "autorepeat")) __set_bit(EV_REP, priv->idev->evbit); - for (i = 0; i < CAP11XX_NUM_CHN; i++) + for (i = 0; i < cap->num_channels; i++) __set_bit(priv->keycodes[i], priv->idev->keybit); __clear_bit(KEY_RESERVED, priv->idev->keybit); priv->idev->keycode = priv->keycodes; - priv->idev->keycodesize = sizeof(priv->keycodes[0]); - priv->idev->keycodemax = ARRAY_SIZE(priv->keycodes); + priv->idev->keycodesize = sizeof(u32); + priv->idev->keycodemax = cap->num_channels; priv->idev->id.vendor = CAP11XX_MANUFACTURER_ID; - priv->idev->id.product = CAP11XX_PRODUCT_ID; + priv->idev->id.product = cap->product_id; priv->idev->id.version = rev; priv->idev->open = cap11xx_input_open; @@ -312,12 +326,16 @@ static int cap11xx_i2c_probe(struct i2c_client *i2c_client, static const struct of_device_id cap11xx_dt_ids[] = { { .compatible = "microchip,cap1106", }, + { .compatible = "microchip,cap1126", }, + { .compatible = "microchip,cap1188", }, {} }; MODULE_DEVICE_TABLE(of, cap11xx_dt_ids); static const struct i2c_device_id cap11xx_i2c_ids[] = { - { "cap1106", 0 }, + { "cap1106", CAP1106 }, + { "cap1126", CAP1126 }, + { "cap1188", CAP1188 }, {} }; MODULE_DEVICE_TABLE(i2c, cap11xx_i2c_ids);