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From: Roderick Colenbrander <roderick@gaikai.com>
To: Jiri Kosina <jikos@kernel.org>,
	Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: linux-input@vger.kernel.org, Chris Ye <lzye@google.com>,
	Roderick Colenbrander <roderick.colenbrander@sony.com>
Subject: [PATCH 09/13] HID: playstation: add DualSense lightbar support
Date: Fri, 18 Dec 2020 22:23:32 -0800	[thread overview]
Message-ID: <20201219062336.72568-10-roderick@gaikai.com> (raw)
In-Reply-To: <20201219062336.72568-1-roderick@gaikai.com>

From: Roderick Colenbrander <roderick.colenbrander@sony.com>

Expose the DualSense its RGB lightbar using the new multicolor LED
framework.

Signed-off-by: Roderick Colenbrander <roderick.colenbrander@sony.com>
---
 drivers/hid/Kconfig           |   1 +
 drivers/hid/hid-playstation.c | 124 ++++++++++++++++++++++++++++++++++
 2 files changed, 125 insertions(+)

diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index e6c67aaa1a1a..c80c81916f4a 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -857,6 +857,7 @@ config HID_PLAYSTATION
 	tristate "PlayStation HID Driver"
 	default !EXPERT
 	depends on HID
+	select LEDS_CLASS_MULTICOLOR
 	select POWER_SUPPLY
 	help
 	  Provides support for Sony PS5 controllers including support for
diff --git a/drivers/hid/hid-playstation.c b/drivers/hid/hid-playstation.c
index 0b62bcb28d8a..f8cf82a27d43 100644
--- a/drivers/hid/hid-playstation.c
+++ b/drivers/hid/hid-playstation.c
@@ -8,6 +8,7 @@
 #include <linux/device.h>
 #include <linux/hid.h>
 #include <linux/input/mt.h>
+#include <linux/led-class-multicolor.h>
 #include <linux/module.h>
 #include <linux/crc32.h>
 #include <asm/unaligned.h>
@@ -77,6 +78,9 @@ struct ps_calibration_data {
 /* Flags for DualSense output report. */
 #define DS_OUTPUT_VALID_FLAG0_COMPATIBLE_VIBRATION BIT(0)
 #define DS_OUTPUT_VALID_FLAG0_HAPTICS_SELECT 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_FLAG2_LIGHTBAR_SETUP_CONTROL_ENABLE BIT(1)
 
 /* DualSense hardware limits */
 #define DS_ACC_RES_PER_G	8192
@@ -106,6 +110,13 @@ struct dualsense {
 	uint8_t motor_left;
 	uint8_t motor_right;
 
+	/* RGB lightbar */
+	struct led_classdev_mc *lightbar;
+	bool update_lightbar;
+	uint8_t lightbar_red;
+	uint8_t lightbar_green;
+	uint8_t lightbar_blue;
+
 	struct work_struct output_worker;
 	void *output_report_dmabuf;
 	uint8_t output_seq; /* Sequence number for output report. */
@@ -396,6 +407,50 @@ static struct input_dev *ps_gamepad_create(struct hid_device *hdev,
 	return gamepad;
 }
 
+/* Create a DualSense/DualShock4 RGB lightbar represented by a multicolor LED. */
+static struct led_classdev_mc *ps_lightbar_create(struct ps_device *ps_dev,
+	int (*brightness_set)(struct led_classdev *, enum led_brightness))
+{
+	struct hid_device *hdev = ps_dev->hdev;
+	struct led_classdev_mc *lightbar_mc_dev;
+	struct mc_subled *mc_led_info;
+	struct led_classdev *led_cdev;
+	int ret;
+
+	lightbar_mc_dev = devm_kzalloc(&hdev->dev, sizeof(*lightbar_mc_dev), GFP_KERNEL);
+	if (!lightbar_mc_dev)
+		return ERR_PTR(-ENOMEM);
+
+	mc_led_info = devm_kzalloc(&hdev->dev, 3*sizeof(*mc_led_info), GFP_KERNEL);
+	if (!mc_led_info)
+		return ERR_PTR(-ENOMEM);
+
+	mc_led_info[0].color_index = LED_COLOR_ID_RED;
+	mc_led_info[0].channel = 0;
+	mc_led_info[1].color_index = LED_COLOR_ID_GREEN;
+	mc_led_info[1].channel = 1;
+	mc_led_info[2].color_index = LED_COLOR_ID_BLUE;
+	mc_led_info[2].channel = 2;
+
+	lightbar_mc_dev->subled_info = mc_led_info;
+	lightbar_mc_dev->num_colors = 3;
+
+	led_cdev = &lightbar_mc_dev->led_cdev;
+	led_cdev->name = devm_kasprintf(&hdev->dev, GFP_KERNEL, "playstation::%pMR::rgb",
+			ps_dev->mac_address);
+	led_cdev->brightness = 255;
+	led_cdev->max_brightness = 255;
+	led_cdev->brightness_set_blocking = brightness_set;
+
+	ret = devm_led_classdev_multicolor_register(&hdev->dev, lightbar_mc_dev);
+	if (ret < 0) {
+		hid_err(hdev, "Cannot register multicolor LED device\n");
+		return ERR_PTR(ret);
+	}
+
+	return lightbar_mc_dev;
+}
+
 static struct input_dev *ps_sensors_create(struct hid_device *hdev, int accel_range, int accel_res,
 		int gyro_range, int gyro_res)
 {
@@ -580,6 +635,27 @@ static int dualsense_get_mac_address(struct dualsense *ds)
 	return ret;
 }
 
+static int dualsense_lightbar_set_brightness(struct led_classdev *cdev,
+	enum led_brightness brightness)
+{
+	struct led_classdev_mc *mc_cdev = lcdev_to_mccdev(cdev);
+	struct hid_device *hdev = to_hid_device(cdev->dev->parent);
+	struct dualsense *ds = hid_get_drvdata(hdev);
+	unsigned long flags;
+
+	led_mc_calc_color_components(mc_cdev, brightness);
+
+	spin_lock_irqsave(&ds->base.lock, flags);
+	ds->update_lightbar = true;
+	ds->lightbar_red = mc_cdev->subled_info[0].brightness;
+	ds->lightbar_green = mc_cdev->subled_info[1].brightness;
+	ds->lightbar_blue = mc_cdev->subled_info[2].brightness;
+	spin_unlock_irqrestore(&ds->base.lock, flags);
+
+	schedule_work(&ds->output_worker);
+	return 0;
+}
+
 static void dualsense_init_output_report(struct dualsense *ds, struct dualsense_output_report *rp,
 		void *buf)
 {
@@ -661,6 +737,15 @@ static void dualsense_output_worker(struct work_struct *work)
 		ds->update_rumble = false;
 	}
 
+	if (ds->update_lightbar) {
+		common->valid_flag1 |= DS_OUTPUT_VALID_FLAG1_LIGHTBAR_CONTROL_ENABLE;
+		common->lightbar_red = ds->lightbar_red;
+		common->lightbar_green = ds->lightbar_green;
+		common->lightbar_blue = ds->lightbar_blue;
+
+		ds->update_lightbar = false;
+	}
+
 	spin_unlock_irqrestore(&ds->base.lock, flags);
 
 	dualsense_send_output_report(ds, &report);
@@ -841,6 +926,30 @@ static int dualsense_play_effect(struct input_dev *dev, void *data, struct ff_ef
 	return 0;
 }
 
+static int dualsense_reset_leds(struct dualsense *ds)
+{
+	struct dualsense_output_report report;
+	uint8_t *buf;
+
+	buf = kzalloc(sizeof(struct dualsense_output_report_bt), GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	dualsense_init_output_report(ds, &report, buf);
+	/* On Bluetooth the DualSense outputs an animation on the lightbar
+	 * during startup and maintains a color afterwards. We need to explicitly
+	 * reconfigure the lightbar before we can do any programming later on.
+	 * In USB the lightbar is not on by default, but redoing the setup there
+	 * doesn't hurt.
+	 */
+	report.common->valid_flag2 = DS_OUTPUT_VALID_FLAG2_LIGHTBAR_SETUP_CONTROL_ENABLE;
+	report.common->lightbar_setup = 2; /* Fade light out. */
+	dualsense_send_output_report(ds, &report);
+
+	kfree(buf);
+	return 0;
+}
+
 static struct ps_device *dualsense_create(struct hid_device *hdev)
 {
 	struct dualsense *ds;
@@ -908,6 +1017,21 @@ static struct ps_device *dualsense_create(struct hid_device *hdev)
 	if (ret < 0)
 		goto err;
 
+	/* The hardware may have control over the LEDs (e.g. in Bluetooth on startup).
+	 * Reset the LEDs (lightbar, mute, player leds), so we can control them
+	 * from software.
+	 */
+	ret = dualsense_reset_leds(ds);
+	if (ret < 0)
+		goto err;
+
+	ds->lightbar = ps_lightbar_create((struct ps_device *)ds,
+			dualsense_lightbar_set_brightness);
+	if (IS_ERR(ds->lightbar)) {
+		ret = PTR_ERR(ds->lightbar);
+		goto err;
+	}
+
 	return (struct ps_device *)ds;
 
 err:
-- 
2.26.2


  parent reply	other threads:[~2020-12-19  6:25 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-19  6:23 [PATCH 00/13] HID: new driver for PS5 'DualSense' controller Roderick Colenbrander
2020-12-19  6:23 ` [PATCH 01/13] HID: playstation: initial DualSense USB support Roderick Colenbrander
2020-12-27 16:23   ` Barnabás Pőcze
2020-12-27 23:04     ` Roderick Colenbrander
2020-12-29 19:12       ` Barnabás Pőcze
2020-12-31  0:08   ` Barnabás Pőcze
2020-12-31  1:08     ` Roderick Colenbrander
2020-12-19  6:23 ` [PATCH 02/13] HID: playstation: use DualSense MAC address as unique identifier Roderick Colenbrander
2020-12-19  6:23 ` [PATCH 03/13] HID: playstation: add DualSense battery support Roderick Colenbrander
2020-12-19  6:23 ` [PATCH 04/13] HID: playstation: add DualSense touchpad support Roderick Colenbrander
2020-12-26  2:14   ` Samuel Čavoj
2020-12-26 22:27     ` Roderick Colenbrander
2020-12-29 19:49   ` Barnabás Pőcze
2020-12-29 21:44     ` Roderick Colenbrander
2020-12-19  6:23 ` [PATCH 05/13] HID: playstation: add DualSense accelerometer and gyroscope support Roderick Colenbrander
2020-12-19  6:23 ` [PATCH 06/13] HID: playstation: track devices in list Roderick Colenbrander
2020-12-19  6:23 ` [PATCH 07/13] HID: playstation: add DualSense Bluetooth support Roderick Colenbrander
2020-12-19  6:23 ` [PATCH 08/13] HID: playstation: add DualSense classic rumble support Roderick Colenbrander
2020-12-19  6:23 ` Roderick Colenbrander [this message]
2020-12-27 14:41   ` [PATCH 09/13] HID: playstation: add DualSense lightbar support Barnabás Pőcze
2020-12-28 21:26     ` Roderick Colenbrander
2020-12-29 18:59       ` Barnabás Pőcze
2020-12-29 19:54         ` Roderick Colenbrander
2020-12-29 20:22           ` Barnabás Pőcze
2020-12-19  6:23 ` [PATCH 10/13] HID: playstation: add microphone mute support for DualSense Roderick Colenbrander
2020-12-19  6:23 ` [PATCH 11/13] HID: playstation: add DualSense player LEDs support Roderick Colenbrander
2020-12-26 19:27   ` Samuel Čavoj
2020-12-26 23:07     ` Roderick Colenbrander
2020-12-27 14:27   ` Barnabás Pőcze
2020-12-28 22:02     ` Roderick Colenbrander
2020-12-29 18:49       ` Barnabás Pőcze
2020-12-19  6:23 ` [PATCH 12/13] HID: playstation: DualSense set LEDs to default player id Roderick Colenbrander
2020-12-27  0:08   ` Samuel Čavoj
2020-12-27 23:07     ` Roderick Colenbrander
2020-12-19  6:23 ` [PATCH 13/13] HID: playstation: report DualSense hardware and firmware version Roderick Colenbrander
2020-12-27 17:06   ` Barnabás Pőcze
2020-12-27 22:21     ` Roderick Colenbrander
2020-12-27 22:27       ` Roderick Colenbrander
2020-12-27 22:37         ` Barnabás Pőcze
2020-12-28 22:45           ` Roderick Colenbrander
2020-12-29 15:10             ` Barnabás Pőcze
2020-12-19  8:38 ` [PATCH 00/13] HID: new driver for PS5 'DualSense' controller Bastien Nocera
2020-12-19 22:39   ` Roderick.Colenbrander

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