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HID: playstation: support DualShock4 lightbar.

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Expose the lightbar LEDs in the same manner as hid-sony through
individual LEDs for backwards compatibility reasons. There is a
slight change in LED naming to use the input device name as opposed
to the MAC address like hid-sony did. This is expected to not
cause any issues and should make the naming more compliant.

In addition set a default lightbar color based on player ID.

Signed-off-by: Roderick Colenbrander <roderick.colenbrander@sony.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Roderick Colenbrander 2022-10-29 11:48:46 -07:00 committed by Jiri Kosina
parent 316f57fb3f
commit 4521109a8f
1 changed files with 138 additions and 3 deletions
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141
drivers/hid/hid-playstation.c
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@ -311,6 +311,8 @@ struct dualsense_output_report {
/* Flags for DualShock4 output report. */
#define DS4_OUTPUT_VALID_FLAG0_MOTOR 0x01
#define DS4_OUTPUT_VALID_FLAG0_LED 0x02
#define DS4_OUTPUT_VALID_FLAG0_LED_BLINK 0x04
/* DualShock4 hardware limits */
#define DS4_ACC_RES_PER_G 8192
@ -339,6 +341,14 @@ struct dualshock4 {
uint8_t motor_left;
uint8_t motor_right;
/* Lightbar leds */
bool update_lightbar;
bool lightbar_enabled; /* For use by global LED control. */
uint8_t lightbar_red;
uint8_t lightbar_green;
uint8_t lightbar_blue;
struct led_classdev lightbar_leds[4];
struct work_struct output_worker;
bool output_worker_initialized;
void *output_report_dmabuf;
@ -697,8 +707,14 @@ static int ps_led_register(struct ps_device *ps_dev, struct led_classdev *led,
{
int ret;
led->name = devm_kasprintf(&ps_dev->hdev->dev, GFP_KERNEL,
"%s:%s:%s", ps_dev->input_dev_name, led_info->color, led_info->name);
if (led_info->name) {
led->name = devm_kasprintf(&ps_dev->hdev->dev, GFP_KERNEL,
"%s:%s:%s", ps_dev->input_dev_name, led_info->color, led_info->name);
} else {
/* Backwards compatible mode for hid-sony, but not compliant with LED class spec. */
led->name = devm_kasprintf(&ps_dev->hdev->dev, GFP_KERNEL,
"%s:%s", ps_dev->input_dev_name, led_info->color);
}
if (!led->name)
return -ENOMEM;
@ -1746,6 +1762,60 @@ err_free:
return ret;
}
static enum led_brightness dualshock4_led_get_brightness(struct led_classdev *led)
{
struct hid_device *hdev = to_hid_device(led->dev->parent);
struct dualshock4 *ds4 = hid_get_drvdata(hdev);
unsigned int led_index;
led_index = led - ds4->lightbar_leds;
switch (led_index) {
case 0:
return ds4->lightbar_red;
case 1:
return ds4->lightbar_green;
case 2:
return ds4->lightbar_blue;
case 3:
return ds4->lightbar_enabled;
}
return -1;
}
static int dualshock4_led_set_brightness(struct led_classdev *led, enum led_brightness value)
{
struct hid_device *hdev = to_hid_device(led->dev->parent);
struct dualshock4 *ds4 = hid_get_drvdata(hdev);
unsigned long flags;
unsigned int led_index;
spin_lock_irqsave(&ds4->base.lock, flags);
led_index = led - ds4->lightbar_leds;
switch (led_index) {
case 0:
ds4->lightbar_red = value;
break;
case 1:
ds4->lightbar_green = value;
break;
case 2:
ds4->lightbar_blue = value;
break;
case 3:
ds4->lightbar_enabled = !!value;
}
ds4->update_lightbar = true;
spin_unlock_irqrestore(&ds4->base.lock, flags);
dualshock4_schedule_work(ds4);
return 0;
}
static void dualshock4_init_output_report(struct dualshock4 *ds4,
struct dualshock4_output_report *rp, void *buf)
{
@ -1784,6 +1854,18 @@ static void dualshock4_output_worker(struct work_struct *work)
ds4->update_rumble = false;
}
if (ds4->update_lightbar) {
common->valid_flag0 |= DS4_OUTPUT_VALID_FLAG0_LED;
/* Comptabile behavior with hid-sony, which used a dummy global LED to
* allow enabling/disabling the lightbar. The global LED maps to
* lightbar_enabled.
*/
common->lightbar_red = ds4->lightbar_enabled ? ds4->lightbar_red : 0;
common->lightbar_green = ds4->lightbar_enabled ? ds4->lightbar_green : 0;
common->lightbar_blue = ds4->lightbar_enabled ? ds4->lightbar_blue : 0;
ds4->update_lightbar = false;
}
spin_unlock_irqrestore(&ds4->base.lock, flags);
hid_hw_output_report(ds4->base.hdev, report.data, report.len);
@ -1998,12 +2080,52 @@ static inline void dualshock4_schedule_work(struct dualshock4 *ds4)
spin_unlock_irqrestore(&ds4->base.lock, flags);
}
/* Set default lightbar color based on player. */
static void dualshock4_set_default_lightbar_colors(struct dualshock4 *ds4)
{
/* Use same player colors as PlayStation 4.
* Array of colors is in RGB.
*/
static const int player_colors[4][3] = {
{ 0x00, 0x00, 0x40 }, /* Blue */
{ 0x40, 0x00, 0x00 }, /* Red */
{ 0x00, 0x40, 0x00 }, /* Green */
{ 0x20, 0x00, 0x20 } /* Pink */
};
uint8_t player_id = ds4->base.player_id % ARRAY_SIZE(player_colors);
ds4->lightbar_enabled = true;
ds4->lightbar_red = player_colors[player_id][0];
ds4->lightbar_green = player_colors[player_id][1];
ds4->lightbar_blue = player_colors[player_id][2];
ds4->update_lightbar = true;
dualshock4_schedule_work(ds4);
}
static struct ps_device *dualshock4_create(struct hid_device *hdev)
{
struct dualshock4 *ds4;
struct ps_device *ps_dev;
uint8_t max_output_report_size;
int ret;
int i, ret;
/* The DualShock4 has an RGB lightbar, which the original hid-sony driver
* exposed as a set of 4 LEDs for the 3 color channels and a global control.
* Ideally this should have used the multi-color LED class, which didn't exist
* yet. In addition the driver used a naming scheme not compliant with the LED
* naming spec by using "<mac_address>:<color>", which contained many colons.
* We use a more compliant by using "<device_name>:<color>" name now. Ideally
* would have been "<device_name>:<color>:indicator", but that would break
* existing applications (e.g. Android). Nothing matches against MAC address.
*/
static const struct ps_led_info lightbar_leds_info[] = {
{ NULL, "red", 255, dualshock4_led_get_brightness, dualshock4_led_set_brightness },
{ NULL, "green", 255, dualshock4_led_get_brightness, dualshock4_led_set_brightness },
{ NULL, "blue", 255, dualshock4_led_get_brightness, dualshock4_led_set_brightness },
{ NULL, "global", 1, dualshock4_led_get_brightness, dualshock4_led_set_brightness },
};
ds4 = devm_kzalloc(&hdev->dev, sizeof(*ds4), GFP_KERNEL);
if (!ds4)
@ -2060,6 +2182,9 @@ static struct ps_device *dualshock4_create(struct hid_device *hdev)
goto err;
}
/* Use gamepad input device name as primary device name for e.g. LEDs */
ps_dev->input_dev_name = dev_name(&ds4->gamepad->dev);
ds4->sensors = ps_sensors_create(hdev, DS4_ACC_RANGE, DS4_ACC_RES_PER_G,
DS4_GYRO_RANGE, DS4_GYRO_RES_PER_DEG_S);
if (IS_ERR(ds4->sensors)) {
@ -2077,12 +2202,22 @@ static struct ps_device *dualshock4_create(struct hid_device *hdev)
if (ret)
goto err;
for (i = 0; i < ARRAY_SIZE(lightbar_leds_info); i++) {
const struct ps_led_info *led_info = &lightbar_leds_info[i];
ret = ps_led_register(ps_dev, &ds4->lightbar_leds[i], led_info);
if (ret < 0)
goto err;
}
ret = ps_device_set_player_id(ps_dev);
if (ret) {
hid_err(hdev, "Failed to assign player id for DualShock4: %d\n", ret);
goto err;
}
dualshock4_set_default_lightbar_colors(ds4);
/*
* Reporting hardware and firmware is important as there are frequent updates, which
* can change behavior.