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Input: extract ChromeOS vivaldi physmap show function
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% Signed-off-by: Stephen Boyd <swboyd@chromium.org> Tested-by: Stephen Boyd <swboyd@chromium.org> # coachz, wormdingler Link: https://lore.kernel.org/r/20220228075446.466016-3-dmitry.torokhov@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Stephen Boyd
Dmitry Torokhov
parent
d950db3f80
commit
45ceaf14d5
@ -411,6 +411,7 @@ config HID_GOOGLE_HAMMER
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config HID_VIVALDI
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tristate "Vivaldi Keyboard"
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select INPUT_VIVALDIFMAP
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depends on HID
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help
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Say Y here if you want to enable support for Vivaldi keyboards.
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@ -8,37 +8,24 @@
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#include <linux/device.h>
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#include <linux/hid.h>
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#include <linux/input/vivaldi-fmap.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/sysfs.h>
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#define MIN_FN_ROW_KEY 1
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#define MAX_FN_ROW_KEY 24
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#define MIN_FN_ROW_KEY 1
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#define MAX_FN_ROW_KEY VIVALDI_MAX_FUNCTION_ROW_KEYS
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#define HID_VD_FN_ROW_PHYSMAP 0x00000001
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#define HID_USAGE_FN_ROW_PHYSMAP (HID_UP_GOOGLEVENDOR | HID_VD_FN_ROW_PHYSMAP)
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struct vivaldi_data {
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u32 function_row_physmap[MAX_FN_ROW_KEY - MIN_FN_ROW_KEY + 1];
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int max_function_row_key;
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};
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static ssize_t function_row_physmap_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct hid_device *hdev = to_hid_device(dev);
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struct vivaldi_data *drvdata = hid_get_drvdata(hdev);
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ssize_t size = 0;
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int i;
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if (!drvdata->max_function_row_key)
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return 0;
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for (i = 0; i < drvdata->max_function_row_key; i++)
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size += sprintf(buf + size, "%02X ",
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drvdata->function_row_physmap[i]);
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size += sprintf(buf + size, "\n");
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return size;
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return vivaldi_function_row_physmap_show(drvdata, buf);
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}
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static DEVICE_ATTR_RO(function_row_physmap);
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@ -85,11 +72,11 @@ static void vivaldi_feature_mapping(struct hid_device *hdev,
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(usage->hid & HID_USAGE_PAGE) != HID_UP_ORDINAL)
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return;
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fn_key = (usage->hid & HID_USAGE);
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fn_key = usage->hid & HID_USAGE;
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if (fn_key < MIN_FN_ROW_KEY || fn_key > MAX_FN_ROW_KEY)
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return;
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if (fn_key > drvdata->max_function_row_key)
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drvdata->max_function_row_key = fn_key;
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if (fn_key > drvdata->num_function_row_keys)
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drvdata->num_function_row_keys = fn_key;
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report_data = buf = hid_alloc_report_buf(report, GFP_KERNEL);
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if (!report_data)
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@ -77,6 +77,13 @@ config INPUT_MATRIXKMAP
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To compile this driver as a module, choose M here: the
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module will be called matrix-keymap.
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config INPUT_VIVALDIFMAP
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tristate
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help
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ChromeOS Vivaldi keymap support library. This is a hidden
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option so that drivers can use common code to parse and
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expose the vivaldi function row keymap.
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comment "Userland interfaces"
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config INPUT_MOUSEDEV
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@ -12,6 +12,7 @@ input-core-y += touchscreen.o
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obj-$(CONFIG_INPUT_FF_MEMLESS) += ff-memless.o
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obj-$(CONFIG_INPUT_SPARSEKMAP) += sparse-keymap.o
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obj-$(CONFIG_INPUT_MATRIXKMAP) += matrix-keymap.o
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obj-$(CONFIG_INPUT_VIVALDIFMAP) += vivaldi-fmap.o
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obj-$(CONFIG_INPUT_LEDS) += input-leds.o
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obj-$(CONFIG_INPUT_MOUSEDEV) += mousedev.o
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@ -103,6 +103,7 @@ config KEYBOARD_ATKBD
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select SERIO_LIBPS2
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select SERIO_I8042 if ARCH_MIGHT_HAVE_PC_SERIO
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select SERIO_GSCPS2 if GSC
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select INPUT_VIVALDIFMAP
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help
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Say Y here if you want to use a standard AT or PS/2 keyboard. Usually
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you'll need this, unless you have a different type keyboard (USB, ADB
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@ -749,6 +750,7 @@ config KEYBOARD_XTKBD
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config KEYBOARD_CROS_EC
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tristate "ChromeOS EC keyboard"
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select INPUT_MATRIXKMAP
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select INPUT_VIVALDIFMAP
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depends on CROS_EC
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help
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Say Y here to enable the matrix keyboard used by ChromeOS devices
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@ -19,6 +19,7 @@
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#include <linux/input.h>
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#include <linux/input/vivaldi-fmap.h>
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#include <linux/serio.h>
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#include <linux/workqueue.h>
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#include <linux/libps2.h>
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@ -64,8 +65,6 @@ static bool atkbd_terminal;
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module_param_named(terminal, atkbd_terminal, bool, 0);
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MODULE_PARM_DESC(terminal, "Enable break codes on an IBM Terminal keyboard connected via AT/PS2");
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#define MAX_FUNCTION_ROW_KEYS 24
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#define SCANCODE(keymap) ((keymap >> 16) & 0xFFFF)
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#define KEYCODE(keymap) (keymap & 0xFFFF)
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@ -237,8 +236,7 @@ struct atkbd {
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/* Serializes reconnect(), attr->set() and event work */
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struct mutex mutex;
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u32 function_row_physmap[MAX_FUNCTION_ROW_KEYS];
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int num_function_row_keys;
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struct vivaldi_data vdata;
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};
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/*
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@ -308,17 +306,7 @@ static struct attribute *atkbd_attributes[] = {
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static ssize_t atkbd_show_function_row_physmap(struct atkbd *atkbd, char *buf)
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{
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ssize_t size = 0;
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int i;
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if (!atkbd->num_function_row_keys)
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return 0;
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for (i = 0; i < atkbd->num_function_row_keys; i++)
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size += scnprintf(buf + size, PAGE_SIZE - size, "%02X ",
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atkbd->function_row_physmap[i]);
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size += scnprintf(buf + size, PAGE_SIZE - size, "\n");
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return size;
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return vivaldi_function_row_physmap_show(&atkbd->vdata, buf);
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}
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static umode_t atkbd_attr_is_visible(struct kobject *kobj,
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@ -329,7 +317,7 @@ static umode_t atkbd_attr_is_visible(struct kobject *kobj,
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struct atkbd *atkbd = serio_get_drvdata(serio);
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if (attr == &atkbd_attr_function_row_physmap.attr &&
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!atkbd->num_function_row_keys)
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!atkbd->vdata.num_function_row_keys)
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return 0;
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return attr->mode;
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@ -1206,10 +1194,11 @@ static void atkbd_parse_fwnode_data(struct serio *serio)
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/* Parse "function-row-physmap" property */
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n = device_property_count_u32(dev, "function-row-physmap");
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if (n > 0 && n <= MAX_FUNCTION_ROW_KEYS &&
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if (n > 0 && n <= VIVALDI_MAX_FUNCTION_ROW_KEYS &&
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!device_property_read_u32_array(dev, "function-row-physmap",
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atkbd->function_row_physmap, n)) {
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atkbd->num_function_row_keys = n;
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atkbd->vdata.function_row_physmap,
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n)) {
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atkbd->vdata.num_function_row_keys = n;
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dev_dbg(dev, "FW reported %d function-row key locations\n", n);
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}
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}
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@ -15,6 +15,7 @@
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#include <linux/bitops.h>
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#include <linux/i2c.h>
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#include <linux/input.h>
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#include <linux/input/vivaldi-fmap.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/notifier.h>
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@ -27,8 +28,6 @@
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#include <asm/unaligned.h>
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#define MAX_NUM_TOP_ROW_KEYS 15
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/**
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* struct cros_ec_keyb - Structure representing EC keyboard device
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*
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@ -44,9 +43,7 @@
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* @idev: The input device for the matrix keys.
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* @bs_idev: The input device for non-matrix buttons and switches (or NULL).
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* @notifier: interrupt event notifier for transport devices
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* @function_row_physmap: An array of the encoded rows/columns for the top
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* row function keys, in an order from left to right
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* @num_function_row_keys: The number of top row keys in a custom keyboard
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* @vdata: vivaldi function row data
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*/
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struct cros_ec_keyb {
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unsigned int rows;
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@ -64,8 +61,7 @@ struct cros_ec_keyb {
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struct input_dev *bs_idev;
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struct notifier_block notifier;
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u16 function_row_physmap[MAX_NUM_TOP_ROW_KEYS];
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size_t num_function_row_keys;
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struct vivaldi_data vdata;
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};
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/**
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@ -537,9 +533,9 @@ static int cros_ec_keyb_register_matrix(struct cros_ec_keyb *ckdev)
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int err;
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struct property *prop;
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const __be32 *p;
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u16 *physmap;
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u32 *physmap;
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u32 key_pos;
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int row, col;
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unsigned int row, col, scancode, n_physmap;
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err = matrix_keypad_parse_properties(dev, &ckdev->rows, &ckdev->cols);
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if (err)
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@ -591,20 +587,21 @@ static int cros_ec_keyb_register_matrix(struct cros_ec_keyb *ckdev)
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ckdev->idev = idev;
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cros_ec_keyb_compute_valid_keys(ckdev);
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physmap = ckdev->function_row_physmap;
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physmap = ckdev->vdata.function_row_physmap;
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n_physmap = 0;
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of_property_for_each_u32(dev->of_node, "function-row-physmap",
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prop, p, key_pos) {
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if (ckdev->num_function_row_keys == MAX_NUM_TOP_ROW_KEYS) {
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if (n_physmap == VIVALDI_MAX_FUNCTION_ROW_KEYS) {
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dev_warn(dev, "Only support up to %d top row keys\n",
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MAX_NUM_TOP_ROW_KEYS);
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VIVALDI_MAX_FUNCTION_ROW_KEYS);
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break;
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}
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row = KEY_ROW(key_pos);
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col = KEY_COL(key_pos);
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*physmap = MATRIX_SCAN_CODE(row, col, ckdev->row_shift);
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physmap++;
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ckdev->num_function_row_keys++;
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scancode = MATRIX_SCAN_CODE(row, col, ckdev->row_shift);
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physmap[n_physmap++] = scancode;
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}
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ckdev->vdata.num_function_row_keys = n_physmap;
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err = input_register_device(ckdev->idev);
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if (err) {
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@ -619,18 +616,10 @@ static ssize_t function_row_physmap_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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ssize_t size = 0;
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int i;
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struct cros_ec_keyb *ckdev = dev_get_drvdata(dev);
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u16 *physmap = ckdev->function_row_physmap;
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const struct cros_ec_keyb *ckdev = dev_get_drvdata(dev);
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const struct vivaldi_data *data = &ckdev->vdata;
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for (i = 0; i < ckdev->num_function_row_keys; i++)
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size += scnprintf(buf + size, PAGE_SIZE - size,
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"%s%02X", size ? " " : "", physmap[i]);
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if (size)
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size += scnprintf(buf + size, PAGE_SIZE - size, "\n");
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return size;
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return vivaldi_function_row_physmap_show(data, buf);
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}
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static DEVICE_ATTR_RO(function_row_physmap);
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@ -648,7 +637,7 @@ static umode_t cros_ec_keyb_attr_is_visible(struct kobject *kobj,
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struct cros_ec_keyb *ckdev = dev_get_drvdata(dev);
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if (attr == &dev_attr_function_row_physmap.attr &&
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!ckdev->num_function_row_keys)
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!ckdev->vdata.num_function_row_keys)
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return 0;
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return attr->mode;
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39
drivers/input/vivaldi-fmap.c
Normal file
39
drivers/input/vivaldi-fmap.c
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@ -0,0 +1,39 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Helpers for ChromeOS Vivaldi keyboard function row mapping
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*
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* Copyright (C) 2022 Google, Inc
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*/
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#include <linux/export.h>
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#include <linux/input/vivaldi-fmap.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/types.h>
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/**
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* vivaldi_function_row_physmap_show - Print vivaldi function row physmap attribute
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* @data: The vivaldi function row map
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* @buf: Buffer to print the function row phsymap to
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*/
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ssize_t vivaldi_function_row_physmap_show(const struct vivaldi_data *data,
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char *buf)
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{
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ssize_t size = 0;
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int i;
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const u32 *physmap = data->function_row_physmap;
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if (!data->num_function_row_keys)
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return 0;
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for (i = 0; i < data->num_function_row_keys; i++)
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size += scnprintf(buf + size, PAGE_SIZE - size,
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"%s%02X", size ? " " : "", physmap[i]);
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if (size)
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size += scnprintf(buf + size, PAGE_SIZE - size, "\n");
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return size;
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}
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EXPORT_SYMBOL_GPL(vivaldi_function_row_physmap_show);
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MODULE_LICENSE("GPL");
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27
include/linux/input/vivaldi-fmap.h
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27
include/linux/input/vivaldi-fmap.h
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@ -0,0 +1,27 @@
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _VIVALDI_FMAP_H
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#define _VIVALDI_FMAP_H
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#include <linux/types.h>
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#define VIVALDI_MAX_FUNCTION_ROW_KEYS 24
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/**
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* struct vivaldi_data - Function row map data for ChromeOS Vivaldi keyboards
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* @function_row_physmap: An array of scancodes or their equivalent (HID usage
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* codes, encoded rows/columns, etc) for the top
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* row function keys, in an order from left to right
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* @num_function_row_keys: The number of top row keys in a custom keyboard
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*
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* This structure is supposed to be used by ChromeOS keyboards using
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* the Vivaldi keyboard function row design.
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*/
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struct vivaldi_data {
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u32 function_row_physmap[VIVALDI_MAX_FUNCTION_ROW_KEYS];
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unsigned int num_function_row_keys;
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};
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ssize_t vivaldi_function_row_physmap_show(const struct vivaldi_data *data,
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char *buf);
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#endif /* _VIVALDI_FMAP_H */
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