From patchwork Wed Feb 9 22:55:53 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephen Boyd X-Patchwork-Id: 541608 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 317F5C433F5 for ; Wed, 9 Feb 2022 22:56:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236619AbiBIW4A (ORCPT ); Wed, 9 Feb 2022 17:56:00 -0500 Received: from gmail-smtp-in.l.google.com ([23.128.96.19]:34632 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236599AbiBIWz6 (ORCPT ); Wed, 9 Feb 2022 17:55:58 -0500 Received: from mail-pf1-x42c.google.com (mail-pf1-x42c.google.com [IPv6:2607:f8b0:4864:20::42c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF982E019775 for ; Wed, 9 Feb 2022 14:56:00 -0800 (PST) Received: by mail-pf1-x42c.google.com with SMTP id x15so4545746pfr.5 for ; Wed, 09 Feb 2022 14:56:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=TjRtwSXYHT5J47hsI/ryAldat2t/W6F5BVRXjX1zG4I=; b=S8ayzEPzEtYa8moDFXfC5C9hlSd1+d4HElt98EDjUdrQMY0x4pTh4BvrRDMu8WeILJ vZz83GHpbzw6tUXghx4cgWIaPd6aikMYFxi4VCyv7EMDMGRYQ6wn42T5FvPAzovqqrGy t0aogamTN1jwHzFYYZ/jziSyd5gC6MFv1lCPI= 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=TjRtwSXYHT5J47hsI/ryAldat2t/W6F5BVRXjX1zG4I=; b=EeW9foJzg5rMmzpE72Td6nnDxvZCwY8fKsBl22w4tb2j8exCbb+Q/z4N3XMgmaARBS k8Hq+iiMEDQEptYbYZHgdo3zf4uVwQB5d9lgZJ6Cnfk+rzd5CBbkB8BeNVX0v1U11rCh wIEozRjINTuD/B1StBUNjaYr0ZVUJP/jO7cNVV7782bmjnu7WEPbYWDJIGKLDZ5dPmP0 9/vmU8EZUJlcpd8jRCaUg0E+8pDby8AWHdL0v1ZhV+rr4WZZHLEZ81WTGSbFADhDdX6n LXhYiVUEj1o7lViEtUjBind5SrY7A8qNeCB7mU9n3spGCCXRAwqe895gBv/yMZsDTzc9 nAyw== X-Gm-Message-State: AOAM532SVhNYaNmAKT/hGH6QB0e3wKJvb7tg6y1+8IvGa06aajUofAUD XJ81Rm0lE+PDfZyhTMpcd0tLVA== X-Google-Smtp-Source: ABdhPJzlczzJXAoqqeQHVXEAH4hmaGVofYXiSwhhxdBTObEOFkBGFBVJuyiqJZbOB7T6gNYpWdA61Q== X-Received: by 2002:a05:6a00:1789:: with SMTP id s9mr4614478pfg.71.1644447360427; Wed, 09 Feb 2022 14:56:00 -0800 (PST) Received: from smtp.gmail.com ([2620:15c:202:201:5193:6865:e38e:3a5b]) by smtp.gmail.com with ESMTPSA id b1sm5982015pgb.66.2022.02.09.14.55.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Feb 2022 14:56:00 -0800 (PST) From: Stephen Boyd To: benjamin.tissoires@redhat.com, Dmitry Torokhov , Jiri Kosina Cc: linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, "Sean O'Brien" , Douglas Anderson , Zhengqiao Xia Subject: [PATCH v2 2/5] Input: Extract ChromeOS vivaldi physmap show function Date: Wed, 9 Feb 2022 14:55:53 -0800 Message-Id: <20220209225556.3992827-3-swboyd@chromium.org> X-Mailer: git-send-email 2.35.1.265.g69c8d7142f-goog In-Reply-To: <20220209225556.3992827-1-swboyd@chromium.org> References: <20220209225556.3992827-1-swboyd@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Let's introduce a common library file for the physmap show function duplicated between three different keyboard drivers. This largely copies the code from cros_ec_keyb.c which has the most recent version of the show function, while using the vivaldi_data struct from the hid-vivaldi driver. This saves a small amount of space in an allyesconfig build. $ ./scripts/bloat-o-meter vmlinux.before vmlinux.after add/remove: 3/0 grow/shrink: 2/3 up/down: 412/-720 (-308) Function old new delta vivaldi_function_row_physmap_show - 292 +292 _sub_I_65535_1 1057564 1057616 +52 _sub_D_65535_0 1057564 1057616 +52 e843419@49f2_00062737_9b04 - 8 +8 e843419@20f6_0002a34d_35bc - 8 +8 atkbd_parse_fwnode_data 480 472 -8 atkbd_do_show_function_row_physmap 316 76 -240 function_row_physmap_show 620 148 -472 Total: Before=285581925, After=285581617, chg -0.00% Cc: Jiri Kosina Cc: Dmitry Torokhov Cc: "Sean O'Brien" Cc: Douglas Anderson Cc: Zhengqiao Xia Signed-off-by: Stephen Boyd --- drivers/hid/Kconfig | 1 + drivers/hid/hid-vivaldi.c | 27 +++++-------------- drivers/input/Kconfig | 7 +++++ drivers/input/Makefile | 1 + drivers/input/keyboard/Kconfig | 2 ++ drivers/input/keyboard/atkbd.c | 22 +++++---------- drivers/input/keyboard/cros_ec_keyb.c | 30 +++++++-------------- drivers/input/vivaldi-keymap.c | 39 +++++++++++++++++++++++++++ include/linux/input/vivaldi-keymap.h | 28 +++++++++++++++++++ 9 files changed, 101 insertions(+), 56 deletions(-) create mode 100644 drivers/input/vivaldi-keymap.c create mode 100644 include/linux/input/vivaldi-keymap.h diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index f5544157576c..5569a2029dab 100644 --- a/drivers/hid/Kconfig +++ b/drivers/hid/Kconfig @@ -411,6 +411,7 @@ config HID_GOOGLE_HAMMER config HID_VIVALDI tristate "Vivaldi Keyboard" + select INPUT_VIVALDIFMAP depends on HID help Say Y here if you want to enable support for Vivaldi keyboards. diff --git a/drivers/hid/hid-vivaldi.c b/drivers/hid/hid-vivaldi.c index efa6140915f4..78ae3725bc89 100644 --- a/drivers/hid/hid-vivaldi.c +++ b/drivers/hid/hid-vivaldi.c @@ -8,37 +8,22 @@ #include #include +#include #include #include #include -#define MIN_FN_ROW_KEY 1 -#define MAX_FN_ROW_KEY 24 #define HID_VD_FN_ROW_PHYSMAP 0x00000001 #define HID_USAGE_FN_ROW_PHYSMAP (HID_UP_GOOGLEVENDOR | HID_VD_FN_ROW_PHYSMAP) -struct vivaldi_data { - u32 function_row_physmap[MAX_FN_ROW_KEY - MIN_FN_ROW_KEY + 1]; - int max_function_row_key; -}; - static ssize_t function_row_physmap_show(struct device *dev, struct device_attribute *attr, char *buf) { struct hid_device *hdev = to_hid_device(dev); struct vivaldi_data *drvdata = hid_get_drvdata(hdev); - ssize_t size = 0; - int i; - - if (!drvdata->max_function_row_key) - return 0; - for (i = 0; i < drvdata->max_function_row_key; i++) - size += sprintf(buf + size, "%02X ", - drvdata->function_row_physmap[i]); - size += sprintf(buf + size, "\n"); - return size; + return vivaldi_function_row_physmap_show(drvdata, buf); } static DEVICE_ATTR_RO(function_row_physmap); @@ -86,10 +71,10 @@ static void vivaldi_feature_mapping(struct hid_device *hdev, return; fn_key = (usage->hid & HID_USAGE); - if (fn_key < MIN_FN_ROW_KEY || fn_key > MAX_FN_ROW_KEY) + if (fn_key < VIVALDI_MIN_FN_ROW_KEY || fn_key > VIVALDI_MAX_FN_ROW_KEY) return; - if (fn_key > drvdata->max_function_row_key) - drvdata->max_function_row_key = fn_key; + if (fn_key > drvdata->num_function_row_keys) + drvdata->num_function_row_keys = fn_key; report_data = buf = hid_alloc_report_buf(report, GFP_KERNEL); if (!report_data) @@ -134,7 +119,7 @@ static void vivaldi_feature_mapping(struct hid_device *hdev, goto out; } - drvdata->function_row_physmap[fn_key - MIN_FN_ROW_KEY] = + drvdata->function_row_physmap[fn_key - VIVALDI_MIN_FN_ROW_KEY] = field->value[usage->usage_index]; out: diff --git a/drivers/input/Kconfig b/drivers/input/Kconfig index 5baebf62df33..e2752f7364bc 100644 --- a/drivers/input/Kconfig +++ b/drivers/input/Kconfig @@ -77,6 +77,13 @@ config INPUT_MATRIXKMAP To compile this driver as a module, choose M here: the module will be called matrix-keymap. +config INPUT_VIVALDIFMAP + tristate + help + ChromeOS Vivaldi keymap support library. This is a hidden + option so that drivers can use common code to parse and + expose the vivaldi function row keymap. + comment "Userland interfaces" config INPUT_MOUSEDEV diff --git a/drivers/input/Makefile b/drivers/input/Makefile index 037cc595106c..ba320cc99393 100644 --- a/drivers/input/Makefile +++ b/drivers/input/Makefile @@ -12,6 +12,7 @@ input-core-y += touchscreen.o obj-$(CONFIG_INPUT_FF_MEMLESS) += ff-memless.o obj-$(CONFIG_INPUT_SPARSEKMAP) += sparse-keymap.o obj-$(CONFIG_INPUT_MATRIXKMAP) += matrix-keymap.o +obj-$(CONFIG_INPUT_VIVALDIFMAP) += vivaldi-keymap.o obj-$(CONFIG_INPUT_LEDS) += input-leds.o obj-$(CONFIG_INPUT_MOUSEDEV) += mousedev.o diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig index 0c607da9ee10..8b4477e54a01 100644 --- a/drivers/input/keyboard/Kconfig +++ b/drivers/input/keyboard/Kconfig @@ -103,6 +103,7 @@ config KEYBOARD_ATKBD select SERIO_LIBPS2 select SERIO_I8042 if ARCH_MIGHT_HAVE_PC_SERIO select SERIO_GSCPS2 if GSC + select INPUT_VIVALDIFMAP help Say Y here if you want to use a standard AT or PS/2 keyboard. Usually you'll need this, unless you have a different type keyboard (USB, ADB @@ -749,6 +750,7 @@ config KEYBOARD_XTKBD config KEYBOARD_CROS_EC tristate "ChromeOS EC keyboard" select INPUT_MATRIXKMAP + select INPUT_VIVALDIFMAP depends on CROS_EC help Say Y here to enable the matrix keyboard used by ChromeOS devices diff --git a/drivers/input/keyboard/atkbd.c b/drivers/input/keyboard/atkbd.c index 721cde982637..aa539076c121 100644 --- a/drivers/input/keyboard/atkbd.c +++ b/drivers/input/keyboard/atkbd.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -237,8 +238,7 @@ struct atkbd { /* Serializes reconnect(), attr->set() and event work */ struct mutex mutex; - u16 function_row_physmap[MAX_FUNCTION_ROW_KEYS]; - int num_function_row_keys; + struct vivaldi_data vdata; }; /* @@ -308,17 +308,9 @@ static struct attribute *atkbd_attributes[] = { static ssize_t atkbd_show_function_row_physmap(struct atkbd *atkbd, char *buf) { - ssize_t size = 0; - int i; - - if (!atkbd->num_function_row_keys) - return 0; + const struct vivaldi_data *data = &atkbd->vdata; - for (i = 0; i < atkbd->num_function_row_keys; i++) - size += scnprintf(buf + size, PAGE_SIZE - size, "%02X ", - atkbd->function_row_physmap[i]); - size += scnprintf(buf + size, PAGE_SIZE - size, "\n"); - return size; + return vivaldi_function_row_physmap_show(data, buf); } static umode_t atkbd_attr_is_visible(struct kobject *kobj, @@ -329,7 +321,7 @@ static umode_t atkbd_attr_is_visible(struct kobject *kobj, struct atkbd *atkbd = serio_get_drvdata(serio); if (attr == &atkbd_attr_function_row_physmap.attr && - !atkbd->num_function_row_keys) + !atkbd->vdata.num_function_row_keys) return 0; return attr->mode; @@ -1210,9 +1202,9 @@ static void atkbd_parse_fwnode_data(struct serio *serio) if (n > 0 && n <= MAX_FUNCTION_ROW_KEYS && !device_property_read_u32_array(dev, "function-row-physmap", physmap, n)) { - atkbd->num_function_row_keys = n; + atkbd->vdata.num_function_row_keys = n; for (i = 0; i < n; i++) - atkbd->function_row_physmap[i] = physmap[i]; + atkbd->vdata.function_row_physmap[i] = physmap[i]; dev_dbg(dev, "FW reported %d function-row key locations\n", n); } } diff --git a/drivers/input/keyboard/cros_ec_keyb.c b/drivers/input/keyboard/cros_ec_keyb.c index fc02c540636e..ef0f767353fb 100644 --- a/drivers/input/keyboard/cros_ec_keyb.c +++ b/drivers/input/keyboard/cros_ec_keyb.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -44,9 +45,7 @@ * @idev: The input device for the matrix keys. * @bs_idev: The input device for non-matrix buttons and switches (or NULL). * @notifier: interrupt event notifier for transport devices - * @function_row_physmap: An array of the encoded rows/columns for the top - * row function keys, in an order from left to right - * @num_function_row_keys: The number of top row keys in a custom keyboard + * @vdata: vivaldi function row data */ struct cros_ec_keyb { unsigned int rows; @@ -64,8 +63,7 @@ struct cros_ec_keyb { struct input_dev *bs_idev; struct notifier_block notifier; - u16 function_row_physmap[MAX_NUM_TOP_ROW_KEYS]; - size_t num_function_row_keys; + struct vivaldi_data vdata; }; /** @@ -591,10 +589,10 @@ static int cros_ec_keyb_register_matrix(struct cros_ec_keyb *ckdev) ckdev->idev = idev; cros_ec_keyb_compute_valid_keys(ckdev); - physmap = ckdev->function_row_physmap; + physmap = ckdev->vdata.function_row_physmap; of_property_for_each_u32(dev->of_node, "function-row-physmap", prop, p, key_pos) { - if (ckdev->num_function_row_keys == MAX_NUM_TOP_ROW_KEYS) { + if (ckdev->vdata.num_function_row_keys == MAX_NUM_TOP_ROW_KEYS) { dev_warn(dev, "Only support up to %d top row keys\n", MAX_NUM_TOP_ROW_KEYS); break; @@ -603,7 +601,7 @@ static int cros_ec_keyb_register_matrix(struct cros_ec_keyb *ckdev) col = KEY_COL(key_pos); *physmap = MATRIX_SCAN_CODE(row, col, ckdev->row_shift); physmap++; - ckdev->num_function_row_keys++; + ckdev->vdata.num_function_row_keys++; } err = input_register_device(ckdev->idev); @@ -619,18 +617,10 @@ static ssize_t function_row_physmap_show(struct device *dev, struct device_attribute *attr, char *buf) { - ssize_t size = 0; - int i; - struct cros_ec_keyb *ckdev = dev_get_drvdata(dev); - u16 *physmap = ckdev->function_row_physmap; - - for (i = 0; i < ckdev->num_function_row_keys; i++) - size += scnprintf(buf + size, PAGE_SIZE - size, - "%s%02X", size ? " " : "", physmap[i]); - if (size) - size += scnprintf(buf + size, PAGE_SIZE - size, "\n"); + const struct cros_ec_keyb *ckdev = dev_get_drvdata(dev); + const struct vivaldi_data *data = &ckdev->vdata; - return size; + return vivaldi_function_row_physmap_show(data, buf); } static DEVICE_ATTR_RO(function_row_physmap); @@ -648,7 +638,7 @@ static umode_t cros_ec_keyb_attr_is_visible(struct kobject *kobj, struct cros_ec_keyb *ckdev = dev_get_drvdata(dev); if (attr == &dev_attr_function_row_physmap.attr && - !ckdev->num_function_row_keys) + !ckdev->vdata.num_function_row_keys) return 0; return attr->mode; diff --git a/drivers/input/vivaldi-keymap.c b/drivers/input/vivaldi-keymap.c new file mode 100644 index 000000000000..da6dc4070216 --- /dev/null +++ b/drivers/input/vivaldi-keymap.c @@ -0,0 +1,39 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Helpers for ChromeOS Vivaldi keyboard function row mapping + * + * Copyright (C) 2022 Google, Inc + */ + +#include +#include +#include +#include +#include + +/** + * vivaldi_function_row_physmap_show - Print vivaldi function row physmap attribute + * @data: The vivaldi function keymap + * @buf: Buffer to print the function row phsymap to + */ +ssize_t vivaldi_function_row_physmap_show(const struct vivaldi_data *data, + char *buf) +{ + ssize_t size = 0; + int i; + const u16 *physmap = data->function_row_physmap; + + if (!data->num_function_row_keys) + return 0; + + for (i = 0; i < data->num_function_row_keys; i++) + size += scnprintf(buf + size, PAGE_SIZE - size, + "%s%02X", size ? " " : "", physmap[i]); + if (size) + size += scnprintf(buf + size, PAGE_SIZE - size, "\n"); + + return size; +} +EXPORT_SYMBOL_GPL(vivaldi_function_row_physmap_show); + +MODULE_LICENSE("GPL"); diff --git a/include/linux/input/vivaldi-keymap.h b/include/linux/input/vivaldi-keymap.h new file mode 100644 index 000000000000..4023b65e1649 --- /dev/null +++ b/include/linux/input/vivaldi-keymap.h @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _VIVALDI_KEYMAP_H +#define _VIVALDI_KEYMAP_H + +#include + +#define VIVALDI_MIN_FN_ROW_KEY 1 +#define VIVALDI_MAX_FN_ROW_KEY 24 + +/** + * struct vivaldi_data - Function row keymap data for ChromeOS vivaldi keyboards + * @function_row_physmap: An array of the encoded rows/columns for the top + * row function keys, in an order from left to right + * @num_function_row_keys: The number of top row keys in a custom keyboard + * + * This structure is supposed to be used by ChromeOS keyboards using + * the vivaldi keyboard function row design. + */ +struct vivaldi_data { + u16 function_row_physmap[VIVALDI_MAX_FN_ROW_KEY - VIVALDI_MIN_FN_ROW_KEY + 1]; + int num_function_row_keys; +}; + + +ssize_t vivaldi_function_row_physmap_show(const struct vivaldi_data *data, + char *buf); + +#endif /* _VIVALDI_KEYMAP_H */