From patchwork Tue Aug 1 09:09:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikita Travkin X-Patchwork-Id: 710753 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 BD23DC04E69 for ; Tue, 1 Aug 2023 09:24:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232903AbjHAJYm (ORCPT ); Tue, 1 Aug 2023 05:24:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52734 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231862AbjHAJYS (ORCPT ); Tue, 1 Aug 2023 05:24:18 -0400 X-Greylist: delayed 762 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Tue, 01 Aug 2023 02:23:23 PDT Received: from box.trvn.ru (box.trvn.ru [194.87.146.52]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AC3EE103; Tue, 1 Aug 2023 02:23:23 -0700 (PDT) Received: from authenticated-user (box.trvn.ru [194.87.146.52]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by box.trvn.ru (Postfix) with ESMTPSA id 7836342404; Tue, 1 Aug 2023 14:09:33 +0500 (+05) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=trvn.ru; s=mail; t=1690880973; bh=yNGffE2xORf7vTs2Y1W53hQMQRyrUgd9ZhG7sX37y4A=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=hX1plOZNoNSYJ5Tes9r9w+Q/U6cB5DeuWOBj6NBaonWMsBKdPxBjBPNnspPmNgs+x e5UtyXZClheTyYeO+gdrQX5tYyArOesq4lX2fw6Inc6GvneEMAisUuwylNh1C0ckNt fwZPIiN2bBe5WjN1MnWpJgpOIwGxyjSpUmJGAsKF+Y/uNXXIgDROE3nrQYDlAeoHtm yDEaaA2Fmj7ogEpEsdLrtukiaXgImjv08QDZCv9Jmk1RgfmBkUJJbm82s9mmVWI32x 7FN0e+Bk+D0SoZNCH4cCQKh7odpO8jBIPM8qm2RGN9pm0bpjAd+En3a2DjC5cBIHNk P9zisnV7Z9uvA== From: Nikita Travkin Date: Tue, 01 Aug 2023 14:09:26 +0500 Subject: [PATCH v4 2/2] input: zinitix: Add touchkey support MIME-Version: 1.0 Message-Id: <20230801-zinitix-tkey-v4-2-b85526c5a474@trvn.ru> References: <20230801-zinitix-tkey-v4-0-b85526c5a474@trvn.ru> In-Reply-To: <20230801-zinitix-tkey-v4-0-b85526c5a474@trvn.ru> To: Dmitry Torokhov , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Michael Srba , Linus Walleij Cc: linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Nikita Travkin X-Developer-Signature: v=1; a=openpgp-sha256; l=5056; i=nikita@trvn.ru; h=from:subject:message-id; bh=yNGffE2xORf7vTs2Y1W53hQMQRyrUgd9ZhG7sX37y4A=; b=owEBbQKS/ZANAwAIAUMc7O4oGb91AcsmYgBkyMvLM2Nf8SA/czU3HoTxrDPUJ/IPRby80sAm+ rJumybz3nSJAjMEAAEIAB0WIQTAhK9UUj+qg34uxUdDHOzuKBm/dQUCZMjLywAKCRBDHOzuKBm/ den8D/4khojf1r+/C8XgSbDvRhAGeqR63FHudPA1/rFI9dJOFGxCHsRRwOUn/E5a0WsltefurHX nZ7+wZ01WHndrfUZSHF2WiogfRhvupwPK+8IfQl6igrmOeKovmtVNFQRmd0ZAnzCPYVSdwHmiqD 6KfOaDngQte2j4mOG0/JvE5BwxWMA4oUPyAge5X6+CQ2NunhjgtcsNFjgClgRxZYdcNbJZxRMS4 rUkybAPiiteX1VY2D6qtn9j20azMKI9rJhnIag0qlGs32szer8+Smd4FV+AW47u3Ac00cWcp29u s75Ctqf/8sf1C8zja9KsY4RcGDP6Pzx02dR+binCR2LY1Lg0uNQ46n1Mtsn+EnD1XhoGF7b8Ves VHk18/uJA1mwrVsfOu/9PqIiNOyeoizoRlSSVCeRsWh1fV+A6uXpDJliQNTx+bD6YJvEk3KbUFT 7EH5ky/dbcZrLt9uZGSA9KBE5ONIxdvej9bGigt2IpCgd8ifZMcIrhewnL+cknT0QUMmXfmIXhX T2Trqsil4o9IDJDESMNh4bV+UlrWfslFtU3iKOoUDRDKp4Wx/JtlDLxdPjxOkIbULOguvoHp0r+ gEP4P3290bb0mGMmMFxd28ZrbEm9QB8cz0Ixu7Kuuwh6/Yvh5OKzW+zhsFesRCkF1jMvdcOqn+z dNH/XLZEht3ZWrA== X-Developer-Key: i=nikita@trvn.ru; a=openpgp; fpr=C084AF54523FAA837E2EC547431CECEE2819BF75 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Zinitix touch controllers can use some of the sense lines for virtual keys (like those found on many phones). Add support for those keys. Reviewed-by: Linus Walleij Signed-off-by: Nikita Travkin --- drivers/input/touchscreen/zinitix.c | 61 +++++++++++++++++++++++++++++++++++-- 1 file changed, 58 insertions(+), 3 deletions(-) diff --git a/drivers/input/touchscreen/zinitix.c b/drivers/input/touchscreen/zinitix.c index 1b4807ba4624..75390d67689e 100644 --- a/drivers/input/touchscreen/zinitix.c +++ b/drivers/input/touchscreen/zinitix.c @@ -119,6 +119,7 @@ #define DEFAULT_TOUCH_POINT_MODE 2 #define MAX_SUPPORTED_FINGER_NUM 5 +#define MAX_SUPPORTED_BUTTON_NUM 8 #define CHIP_ON_DELAY 15 // ms #define FIRMWARE_ON_DELAY 40 // ms @@ -146,6 +147,8 @@ struct bt541_ts_data { struct touchscreen_properties prop; struct regulator_bulk_data supplies[2]; u32 zinitix_mode; + u32 keycodes[MAX_SUPPORTED_BUTTON_NUM]; + int num_keycodes; }; static int zinitix_read_data(struct i2c_client *client, @@ -195,6 +198,7 @@ static int zinitix_init_touch(struct bt541_ts_data *bt541) struct i2c_client *client = bt541->client; int i; int error; + u16 int_flags = 0; error = zinitix_write_cmd(client, ZINITIX_SWRESET_CMD); if (error) { @@ -225,6 +229,11 @@ static int zinitix_init_touch(struct bt541_ts_data *bt541) if (error) return error; + error = zinitix_write_u16(client, ZINITIX_BUTTON_SUPPORTED_NUM, + bt541->num_keycodes); + if (error) + return error; + error = zinitix_write_u16(client, ZINITIX_INITIAL_TOUCH_MODE, bt541->zinitix_mode); if (error) @@ -235,9 +244,12 @@ static int zinitix_init_touch(struct bt541_ts_data *bt541) if (error) return error; - error = zinitix_write_u16(client, ZINITIX_INT_ENABLE_FLAG, - BIT_PT_CNT_CHANGE | BIT_DOWN | BIT_MOVE | - BIT_UP); + int_flags = BIT_PT_CNT_CHANGE | BIT_DOWN | BIT_MOVE | BIT_UP; + + if (bt541->num_keycodes) + int_flags |= BIT_ICON_EVENT; + + error = zinitix_write_u16(client, ZINITIX_INT_ENABLE_FLAG, int_flags); if (error) return error; @@ -350,6 +362,15 @@ static void zinitix_report_finger(struct bt541_ts_data *bt541, int slot, } } +static void zinitix_report_keys(struct bt541_ts_data *bt541, u16 icon_events) +{ + int i; + + for (i = 0; i < bt541->num_keycodes; i++) + input_report_key(bt541->input_dev, + bt541->keycodes[i], !!(icon_events & BIT(i))); +} + static irqreturn_t zinitix_ts_irq_handler(int irq, void *bt541_handler) { struct bt541_ts_data *bt541 = bt541_handler; @@ -358,6 +379,7 @@ static irqreturn_t zinitix_ts_irq_handler(int irq, void *bt541_handler) unsigned long finger_mask; int error; int i; + __le16 icon_events = 0; memset(&touch_event, 0, sizeof(struct touch_event)); @@ -368,6 +390,17 @@ static irqreturn_t zinitix_ts_irq_handler(int irq, void *bt541_handler) goto out; } + if (le16_to_cpu(touch_event.status) & BIT_ICON_EVENT) { + error = zinitix_read_data(bt541->client, ZINITIX_ICON_STATUS_REG, + &icon_events, sizeof(icon_events)); + if (error) { + dev_err(&client->dev, "Failed to read icon events\n"); + goto out; + } + + zinitix_report_keys(bt541, le16_to_cpu(icon_events)); + } + finger_mask = touch_event.finger_mask; for_each_set_bit(i, &finger_mask, MAX_SUPPORTED_FINGER_NUM) { const struct point_coord *p = &touch_event.point_coord[i]; @@ -453,6 +486,7 @@ static int zinitix_init_input_dev(struct bt541_ts_data *bt541) { struct input_dev *input_dev; int error; + int i; input_dev = devm_input_allocate_device(&bt541->client->dev); if (!input_dev) { @@ -470,6 +504,14 @@ static int zinitix_init_input_dev(struct bt541_ts_data *bt541) input_dev->open = zinitix_input_open; input_dev->close = zinitix_input_close; + if (bt541->num_keycodes) { + input_dev->keycode = bt541->keycodes; + input_dev->keycodemax = bt541->num_keycodes; + input_dev->keycodesize = sizeof(bt541->keycodes[0]); + for (i = 0; i < bt541->num_keycodes; i++) + input_set_capability(input_dev, EV_KEY, bt541->keycodes[i]); + } + input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_X); input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_Y); input_set_abs_params(input_dev, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0); @@ -534,6 +576,19 @@ static int zinitix_ts_probe(struct i2c_client *client) return error; } + bt541->num_keycodes = of_property_read_variable_u32_array( + client->dev.of_node, "linux,keycodes", + bt541->keycodes, 0, + ARRAY_SIZE(bt541->keycodes)); + if (bt541->num_keycodes == -EINVAL) { + bt541->num_keycodes = 0; + } else if (bt541->num_keycodes < 0) { + dev_err(&client->dev, + "Unable to parse \"linux,keycodes\" property: %d\n", + bt541->num_keycodes); + return bt541->num_keycodes; + } + error = zinitix_init_input_dev(bt541); if (error) { dev_err(&client->dev,