@@ -9,6 +9,7 @@
#include <linux/crc32.h>
#include <linux/device.h>
#include <linux/hid.h>
+#include <linux/idr.h>
#include <linux/input/mt.h>
#include <linux/module.h>
@@ -20,6 +21,8 @@
static DEFINE_MUTEX(ps_devices_lock);
static LIST_HEAD(ps_devices_list);
+static DEFINE_IDA(ps_player_id_allocator);
+
#define HID_PLAYSTATION_VERSION_PATCH 0x8000
/* Base class for playstation devices. */
@@ -28,6 +31,8 @@ struct ps_device {
struct hid_device *hdev;
spinlock_t lock;
+ uint32_t player_id;
+
struct power_supply_desc battery_desc;
struct power_supply *battery;
uint8_t battery_capacity;
@@ -108,6 +113,7 @@ struct ps_calibration_data {
#define DS_OUTPUT_VALID_FLAG1_POWER_SAVE_CONTROL_ENABLE BIT(1)
#define DS_OUTPUT_VALID_FLAG1_LIGHTBAR_CONTROL_ENABLE BIT(2)
#define DS_OUTPUT_VALID_FLAG1_RELEASE_LEDS BIT(3)
+#define DS_OUTPUT_VALID_FLAG1_PLAYER_INDICATOR_CONTROL_ENABLE BIT(4)
#define DS_OUTPUT_VALID_FLAG2_LIGHTBAR_SETUP_CONTROL_ENABLE BIT(1)
#define DS_OUTPUT_POWER_SAVE_CONTROL_MIC_MUTE BIT(4)
#define DS_OUTPUT_LIGHTBAR_SETUP_LIGHT_OUT BIT(1)
@@ -151,6 +157,11 @@ struct dualsense {
bool mic_muted;
bool last_btn_mic_state;
+ /* Player leds */
+ bool update_player_leds;
+ uint8_t player_leds_state;
+ struct led_classdev player_leds[5];
+
struct work_struct output_worker;
void *output_report_dmabuf;
uint8_t output_seq; /* Sequence number for output report. */
@@ -309,6 +320,24 @@ static int ps_devices_list_remove(struct ps_device *dev)
return 0;
}
+static int ps_device_set_player_id(struct ps_device *dev)
+{
+ int ret = ida_alloc(&ps_player_id_allocator, GFP_KERNEL);
+
+ if (ret < 0)
+ return ret;
+
+ dev->player_id = ret;
+ return 0;
+}
+
+static void ps_device_release_player_id(struct ps_device *dev)
+{
+ ida_free(&ps_player_id_allocator, dev->player_id);
+
+ dev->player_id = U32_MAX;
+}
+
static struct input_dev *ps_allocate_input_dev(struct hid_device *hdev, const char *name_suffix)
{
struct input_dev *input_dev;
@@ -824,6 +853,13 @@ static void dualsense_output_worker(struct work_struct *work)
ds->update_lightbar = false;
}
+ if (ds->update_player_leds) {
+ common->valid_flag1 |= DS_OUTPUT_VALID_FLAG1_PLAYER_INDICATOR_CONTROL_ENABLE;
+ common->player_leds = ds->player_leds_state;
+
+ ds->update_player_leds = false;
+ }
+
if (ds->update_mic_mute) {
common->valid_flag1 |= DS_OUTPUT_VALID_FLAG1_MIC_MUTE_LED_CONTROL_ENABLE;
common->mute_button_led = ds->mic_muted;
@@ -1078,6 +1114,29 @@ static void dualsense_set_lightbar(struct dualsense *ds, uint8_t red, uint8_t gr
schedule_work(&ds->output_worker);
}
+static void dualsense_set_player_leds(struct dualsense *ds)
+{
+ /*
+ * The DualSense controller has a row of 5 LEDs used for player ids.
+ * Behavior on the PlayStation 5 console is to center the player id
+ * across the LEDs, so e.g. player 1 would be "--x--" with x being 'on'.
+ * Follow a similar mapping here.
+ */
+ static const int player_ids[5] = {
+ BIT(2),
+ BIT(3) | BIT(1),
+ BIT(4) | BIT(2) | BIT(0),
+ BIT(4) | BIT(3) | BIT(1) | BIT(0),
+ BIT(4) | BIT(3) | BIT(2) | BIT(1) | BIT(0)
+ };
+
+ uint8_t player_id = ds->base.player_id % ARRAY_SIZE(player_ids);
+
+ ds->update_player_leds = true;
+ ds->player_leds_state = player_ids[player_id];
+ schedule_work(&ds->output_worker);
+}
+
static struct ps_device *dualsense_create(struct hid_device *hdev)
{
struct dualsense *ds;
@@ -1166,6 +1225,15 @@ static struct ps_device *dualsense_create(struct hid_device *hdev)
dualsense_set_lightbar(ds, 0, 0, 128); /* blue */
+ ret = ps_device_set_player_id(ps_dev);
+ if (ret) {
+ hid_err(hdev, "Failed to assign player id for DualSense: %d\n", ret);
+ goto err;
+ }
+
+ /* Set player LEDs to our player id. */
+ dualsense_set_player_leds(ds);
+
/*
* Reporting hardware and firmware is important as there are frequent updates, which
* can change behavior.
@@ -1243,6 +1311,7 @@ static void ps_remove(struct hid_device *hdev)
struct ps_device *dev = hid_get_drvdata(hdev);
ps_devices_list_remove(dev);
+ ps_device_release_player_id(dev);
hid_hw_close(hdev);
hid_hw_stop(hdev);
@@ -1263,7 +1332,19 @@ static struct hid_driver ps_driver = {
.raw_event = ps_raw_event,
};
-module_hid_driver(ps_driver);
+static int __init ps_init(void)
+{
+ return hid_register_driver(&ps_driver);
+}
+
+static void __exit ps_exit(void)
+{
+ hid_unregister_driver(&ps_driver);
+ ida_destroy(&ps_player_id_allocator);
+}
+
+module_init(ps_init);
+module_exit(ps_exit);
MODULE_AUTHOR("Sony Interactive Entertainment");
MODULE_DESCRIPTION("HID Driver for PlayStation peripherals.");