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[173.68.68.24]) by smtp.gmail.com with ESMTPSA id s11sm2126251qtn.77.2021.05.20.15.47.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 May 2021 15:47:29 -0700 (PDT) From: "Daniel J. Ogorchock" To: linux-input@vger.kernel.org Cc: thunderbird2k@gmail.com, blaws05@gmail.com, benjamin.tissoires@redhat.com, jikos@kernel.org, Roderick.Colenbrander@sony.com, svv@google.com, s.jegen@gmail.com, carmueller@gmail.com, pgriffais@valvesoftware.com, hadess@hadess.net, "Daniel J. Ogorchock" Subject: [PATCH v13 02/15] HID: nintendo: add player led support Date: Thu, 20 May 2021 18:47:02 -0400 Message-Id: <20210520224715.680919-3-djogorchock@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210520224715.680919-1-djogorchock@gmail.com> References: <20210520224715.680919-1-djogorchock@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org This patch adds led_classdev functionality to the switch controller driver. It adds support for the 4 player LEDs. The Home Button LED still needs to be supported on the pro controllers and right joy-con. Signed-off-by: Daniel J. Ogorchock --- drivers/hid/Kconfig | 2 + drivers/hid/hid-nintendo.c | 95 +++++++++++++++++++++++++++++++++++++- 2 files changed, 95 insertions(+), 2 deletions(-) diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index 1f23e84f8bdf3..86a6129d3d89f 100644 --- a/drivers/hid/Kconfig +++ b/drivers/hid/Kconfig @@ -722,6 +722,8 @@ config HID_MULTITOUCH config HID_NINTENDO tristate "Nintendo Joy-Con and Pro Controller support" depends on HID + depends on NEW_LEDS + depends on LEDS_CLASS help Adds support for the Nintendo Switch Joy-Cons and Pro Controller. All controllers support bluetooth, and the Pro Controller also supports diff --git a/drivers/hid/hid-nintendo.c b/drivers/hid/hid-nintendo.c index b6c0e5e36d8b0..c21682b4a2e62 100644 --- a/drivers/hid/hid-nintendo.c +++ b/drivers/hid/hid-nintendo.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include @@ -183,11 +184,13 @@ struct joycon_input_report { } __packed; #define JC_MAX_RESP_SIZE (sizeof(struct joycon_input_report) + 35) +#define JC_NUM_LEDS 4 /* Each physical controller is associated with a joycon_ctlr struct */ struct joycon_ctlr { struct hid_device *hdev; struct input_dev *input; + struct led_classdev leds[JC_NUM_LEDS]; enum joycon_ctlr_state ctlr_state; /* The following members are used for synchronous sends/receives */ @@ -553,11 +556,9 @@ static const unsigned int joycon_dpad_inputs_jc[] = { BTN_DPAD_UP, BTN_DPAD_DOWN, BTN_DPAD_LEFT, BTN_DPAD_RIGHT, }; -static DEFINE_MUTEX(joycon_input_num_mutex); static int joycon_input_create(struct joycon_ctlr *ctlr) { struct hid_device *hdev; - static int input_num = 1; const char *name; int ret; int i; @@ -643,6 +644,66 @@ static int joycon_input_create(struct joycon_ctlr *ctlr) if (ret) return ret; + return 0; +} + +static int joycon_player_led_brightness_set(struct led_classdev *led, + enum led_brightness brightness) +{ + struct device *dev = led->dev->parent; + struct hid_device *hdev = to_hid_device(dev); + struct joycon_ctlr *ctlr; + int val = 0; + int i; + int ret; + int num; + + ctlr = hid_get_drvdata(hdev); + if (!ctlr) { + hid_err(hdev, "No controller data\n"); + return -ENODEV; + } + + /* determine which player led this is */ + for (num = 0; num < JC_NUM_LEDS; num++) { + if (&ctlr->leds[num] == led) + break; + } + if (num >= JC_NUM_LEDS) + return -EINVAL; + + mutex_lock(&ctlr->output_mutex); + for (i = 0; i < JC_NUM_LEDS; i++) { + if (i == num) + val |= brightness << i; + else + val |= ctlr->leds[i].brightness << i; + } + ret = joycon_set_player_leds(ctlr, 0, val); + mutex_unlock(&ctlr->output_mutex); + + return ret; +} + +static const char * const joycon_player_led_names[] = { + "player1", + "player2", + "player3", + "player4" +}; + +static DEFINE_MUTEX(joycon_input_num_mutex); +static int joycon_player_leds_create(struct joycon_ctlr *ctlr) +{ + struct hid_device *hdev = ctlr->hdev; + struct device *dev = &hdev->dev; + const char *d_name = dev_name(dev); + struct led_classdev *led; + char *name; + int ret = 0; + int i; + static int input_num = 1; + /* Set the default controller player leds based on controller number */ mutex_lock(&joycon_input_num_mutex); mutex_lock(&ctlr->output_mutex); @@ -650,6 +711,29 @@ static int joycon_input_create(struct joycon_ctlr *ctlr) if (ret) hid_warn(ctlr->hdev, "Failed to set leds; ret=%d\n", ret); mutex_unlock(&ctlr->output_mutex); + + /* configure the player LEDs */ + for (i = 0; i < JC_NUM_LEDS; i++) { + name = devm_kasprintf(dev, GFP_KERNEL, "%s:%s", d_name, + joycon_player_led_names[i]); + if (!name) + return -ENOMEM; + + led = &ctlr->leds[i]; + led->name = name; + led->brightness = ((i + 1) <= input_num) ? LED_ON : LED_OFF; + led->max_brightness = LED_ON; + led->brightness_set_blocking = + joycon_player_led_brightness_set; + led->flags = LED_CORE_SUSPENDRESUME | LED_HW_PLUGGABLE; + + ret = devm_led_classdev_register(&hdev->dev, led); + if (ret) { + hid_err(hdev, "Failed registering %s LED\n", led->name); + break; + } + } + if (++input_num > 4) input_num = 1; mutex_unlock(&joycon_input_num_mutex); @@ -813,6 +897,13 @@ static int nintendo_hid_probe(struct hid_device *hdev, mutex_unlock(&ctlr->output_mutex); + /* Initialize the leds */ + ret = joycon_player_leds_create(ctlr); + if (ret) { + hid_err(hdev, "Failed to create leds; ret=%d\n", ret); + goto err_close; + } + ret = joycon_input_create(ctlr); if (ret) { hid_err(hdev, "Failed to create input device; ret=%d\n", ret);