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-rw-r--r--drivers/input/keyboard/atkbd.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/drivers/input/keyboard/atkbd.c b/drivers/input/keyboard/atkbd.c
index 7e3eae54c192..358e91f8888f 100644
--- a/drivers/input/keyboard/atkbd.c
+++ b/drivers/input/keyboard/atkbd.c
@@ -24,6 +24,7 @@
#include <linux/libps2.h>
#include <linux/mutex.h>
#include <linux/dmi.h>
+#include <linux/property.h>
#define DRIVER_DESC "AT and PS/2 keyboard driver"
@@ -63,6 +64,8 @@ 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
+
/*
* Scancode to keycode tables. These are just the default setting, and
* are loadable via a userland utility.
@@ -230,6 +233,9 @@ 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;
};
/*
@@ -283,6 +289,7 @@ static struct device_attribute atkbd_attr_##_name = \
__ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL);
ATKBD_DEFINE_RO_ATTR(err_count);
+ATKBD_DEFINE_RO_ATTR(function_row_physmap);
static struct attribute *atkbd_attributes[] = {
&atkbd_attr_extra.attr,
@@ -292,11 +299,42 @@ static struct attribute *atkbd_attributes[] = {
&atkbd_attr_softrepeat.attr,
&atkbd_attr_softraw.attr,
&atkbd_attr_err_count.attr,
+ &atkbd_attr_function_row_physmap.attr,
NULL
};
+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;
+}
+
+static umode_t atkbd_attr_is_visible(struct kobject *kobj,
+ struct attribute *attr, int i)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct serio *serio = to_serio_port(dev);
+ struct atkbd *atkbd = serio_get_drvdata(serio);
+
+ if (attr == &atkbd_attr_function_row_physmap.attr &&
+ !atkbd->num_function_row_keys)
+ return 0;
+
+ return attr->mode;
+}
+
static struct attribute_group atkbd_attribute_group = {
.attrs = atkbd_attributes,
+ .is_visible = atkbd_attr_is_visible,
};
static const unsigned int xl_table[] = {
@@ -1121,6 +1159,22 @@ static void atkbd_set_device_attrs(struct atkbd *atkbd)
}
}
+static void atkbd_parse_fwnode_data(struct serio *serio)
+{
+ struct atkbd *atkbd = serio_get_drvdata(serio);
+ struct device *dev = &serio->dev;
+ int n;
+
+ /* Parse "function-row-physmap" property */
+ n = device_property_count_u32(dev, "function-row-physmap");
+ if (n > 0 && n <= MAX_FUNCTION_ROW_KEYS &&
+ !device_property_read_u32_array(dev, "function-row-physmap",
+ atkbd->function_row_physmap, n)) {
+ atkbd->num_function_row_keys = n;
+ dev_dbg(dev, "FW reported %d function-row key locations\n", n);
+ }
+}
+
/*
* atkbd_connect() is called when the serio module finds an interface
* that isn't handled yet by an appropriate device driver. We check if
@@ -1184,6 +1238,8 @@ static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
atkbd->id = 0xab00;
}
+ atkbd_parse_fwnode_data(serio);
+
atkbd_set_keycode_table(atkbd);
atkbd_set_device_attrs(atkbd);