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Input: extract ChromeOS vivaldi physmap show function

Browse Source 
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
2022-03-14 19:45:37 -07:00
committed by Dmitry Torokhov
parent d950db3f80
commit 45ceaf14d5
9 changed files with 108 additions and 66 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/input/keyboard/Kconfig
View File

@@ -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

27
drivers/input/keyboard/atkbd.c
View File

@@ -19,6 +19,7 @@
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/input/vivaldi-fmap.h>
#include <linux/serio.h>
#include <linux/workqueue.h>
#include <linux/libps2.h>
@@ -64,8 +65,6 @@ static bool atkbd_terminal;
module_param_named(terminal, atkbd_terminal, bool, 0);
MODULE_PARM_DESC(terminal, "Enable break codes on an IBM Terminal keyboard connected via AT/PS2");
#define MAX_FUNCTION_ROW_KEYS 24
#define SCANCODE(keymap) ((keymap >> 16) & 0xFFFF)
#define KEYCODE(keymap) (keymap & 0xFFFF)
@@ -237,8 +236,7 @@ struct atkbd {
/* Serializes reconnect(), attr->set() and event work */
struct mutex mutex;
u32 function_row_physmap[MAX_FUNCTION_ROW_KEYS];
int num_function_row_keys;
struct vivaldi_data vdata;
};
/*
@@ -308,17 +306,7 @@ 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;
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(&atkbd->vdata, buf);
}
static umode_t atkbd_attr_is_visible(struct kobject *kobj,
@@ -329,7 +317,7 @@ 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;
@@ -1206,10 +1194,11 @@ static void atkbd_parse_fwnode_data(struct serio *serio)
/* Parse "function-row-physmap" property */
n = device_property_count_u32(dev, "function-row-physmap");
if (n > 0 && n <= MAX_FUNCTION_ROW_KEYS &&
if (n > 0 && n <= VIVALDI_MAX_FUNCTION_ROW_KEYS &&
!device_property_read_u32_array(dev, "function-row-physmap",
atkbd->function_row_physmap, n)) {
atkbd->num_function_row_keys = n;
atkbd->vdata.function_row_physmap,
n)) {
atkbd->vdata.num_function_row_keys = n;
dev_dbg(dev, "FW reported %d function-row key locations\n", n);
}
}

43
drivers/input/keyboard/cros_ec_keyb.c
View File

@@ -15,6 +15,7 @@
#include <linux/bitops.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/input/vivaldi-fmap.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/notifier.h>
@@ -27,8 +28,6 @@
#include <asm/unaligned.h>
#define MAX_NUM_TOP_ROW_KEYS 15
/**
* struct cros_ec_keyb - Structure representing EC keyboard device
*
@@ -44,9 +43,7 @@
* @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 +61,7 @@ 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;
};
/**
@@ -537,9 +533,9 @@ static int cros_ec_keyb_register_matrix(struct cros_ec_keyb *ckdev)
int err;
struct property *prop;
const __be32 *p;
u16 *physmap;
u32 *physmap;
u32 key_pos;
int row, col;
unsigned int row, col, scancode, n_physmap;
err = matrix_keypad_parse_properties(dev, &ckdev->rows, &ckdev->cols);
if (err)
@@ -591,20 +587,21 @@ 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;
n_physmap = 0;
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 (n_physmap == VIVALDI_MAX_FUNCTION_ROW_KEYS) {
dev_warn(dev, "Only support up to %d top row keys\n",
MAX_NUM_TOP_ROW_KEYS);
VIVALDI_MAX_FUNCTION_ROW_KEYS);
break;
}
row = KEY_ROW(key_pos);
col = KEY_COL(key_pos);
*physmap = MATRIX_SCAN_CODE(row, col, ckdev->row_shift);
physmap++;
ckdev->num_function_row_keys++;
scancode = MATRIX_SCAN_CODE(row, col, ckdev->row_shift);
physmap[n_physmap++] = scancode;
}
ckdev->vdata.num_function_row_keys = n_physmap;
err = input_register_device(ckdev->idev);
if (err) {
@@ -619,18 +616,10 @@ 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;
const struct cros_ec_keyb *ckdev = dev_get_drvdata(dev);
const struct vivaldi_data *data = &ckdev->vdata;
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");
return size;
return vivaldi_function_row_physmap_show(data, buf);
}
static DEVICE_ATTR_RO(function_row_physmap);
@@ -648,7 +637,7 @@ 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;