From patchwork Tue Mar 17 03:29:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Ogorchock X-Patchwork-Id: 208088 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EDE93C10F29 for ; Tue, 17 Mar 2020 03:30:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B51E220717 for ; Tue, 17 Mar 2020 03:30:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="APMhMjer" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726192AbgCQDaH (ORCPT ); Mon, 16 Mar 2020 23:30:07 -0400 Received: from mail-qk1-f196.google.com ([209.85.222.196]:40326 "EHLO mail-qk1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725783AbgCQDaH (ORCPT ); Mon, 16 Mar 2020 23:30:07 -0400 Received: by mail-qk1-f196.google.com with SMTP id j2so17365061qkl.7 for ; Mon, 16 Mar 2020 20:30:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ghhtjXFIBLok5OpxAQlz2RCq2RcK0OrSRIm1JyvOUv8=; b=APMhMjerfylAiIxDLVfh9eqTovhG3L1qYKzjU40gkQrhHqKOyk6WJBVPM1IJ547iB4 CeCAvGFO2NwWdGpWjRlrY3r69u13YwfYLXlFAzhO3wBLkvYW4LIwmNPx/yD1RcGlhKWc nxeNwl2AU1w6puvdR74S/1C/B3le7VbTFWbFvrt7//lQf9QsDqhxXo/435gZn2AZ6Rvj g9py7xcc+Frzc0Xnn0GoSCastnm6o3V1ApzFwLyfrsvFM6JQifWsmBhuZrUqubU9kQTJ jpeHADlMFg+cSou6WgzglxQ0znG84B/w0ColEprR14sBdLyhsk+/1naHNC75OLAJzV16 yXqg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ghhtjXFIBLok5OpxAQlz2RCq2RcK0OrSRIm1JyvOUv8=; b=O8ookl8jXLowLN7SB02C+3ra7zhCFUUjyEipycPY7r7ARlnuDMKnDWI+Gx/yYHX9f8 exzvkrGMGZzJQCx0/bY9E2G46Ai7rBaDVNSD6SwEb4m4r0VWeZxezRmU28CWdGjupY9y 8zHzCFyy6HgsYGQHEBDIMWrzrofL2sYsABOQgeY5rWhaHjNddqJQNL+j1LxughqGGCOm apzXU7ZYsDpgitiDZ+kSOF7WKUJ2GHRzbViPIP57FmuBJaiLFby6xJPJGIdEvk90IaMJ 0YkM/SiV4YHd8d9KJ1WauciErmkMbkdO48ZAzIg3DQkXs2aWgyB9okhI9wdyQxG+pp18 7GPQ== X-Gm-Message-State: ANhLgQ1suaTFQBMBbKxhwWG1MY1vfYpYQRw9tfBdOMlESnKYnvv8QoWS au3MP3qPy2R1wShyFQzwa4eEnNaNoMw= X-Google-Smtp-Source: ADFU+vtSIBqEnMzT6Jwyz6REIHaL2b7BF/G8AIWWgwFXoEIxg/ncQTx40euaACItwvKnR/LwHO5+8g== X-Received: by 2002:a05:620a:31b:: with SMTP id s27mr2811147qkm.95.1584415802806; Mon, 16 Mar 2020 20:30:02 -0700 (PDT) Received: from Arrakis.djogorchock.com ([136.33.205.58]) by smtp.gmail.com with ESMTPSA id t2sm1272264qtp.13.2020.03.16.20.30.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Mar 2020 20:30:02 -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, "Daniel J. Ogorchock" Subject: [PATCH v11 05/11] HID: nintendo: add rumble support Date: Mon, 16 Mar 2020 22:29:22 -0500 Message-Id: <20200317032928.546172-6-djogorchock@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200317032928.546172-1-djogorchock@gmail.com> References: <20200317032928.546172-1-djogorchock@gmail.com> MIME-Version: 1.0 Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org This patch adds support for controller rumble. The ff_effect weak magnitude is associated with the pro controller's right motor (or with a right joy-con). The strong magnitude is associated with the pro's left motor (or a left joy-con). The rumble data is sent periodically (currently configured for every 50 milliseconds). If the controller receives no rumble data for too long a time period, it will stop vibrating. The data is also sent every time joycon_set_rumble is called to avoid latency of up to 50ms. Because the rumble subcommands are sent in a deferred workqueue (they can't be sent in the play_effect function due to the hid send sleeping), the effects are queued. This ensures that no rumble effect is missed due to them arriving in too quick of succession. Signed-off-by: Daniel J. Ogorchock --- drivers/hid/Kconfig | 10 ++ drivers/hid/hid-nintendo.c | 349 ++++++++++++++++++++++++++++++++++++- 2 files changed, 356 insertions(+), 3 deletions(-) diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index bc401da4ea76..8f0203861fa5 100644 --- a/drivers/hid/Kconfig +++ b/drivers/hid/Kconfig @@ -716,6 +716,16 @@ config HID_NINTENDO To compile this driver as a module, choose M here: the module will be called hid-nintendo. +config NINTENDO_FF + bool "Nintendo Switch controller force feedback support" + depends on HID_NINTENDO + select INPUT_FF_MEMLESS + help + Say Y here if you have a Nintendo Switch controller and want to enable + force feedback support for it. This works for both joy-cons and the pro + controller. For the pro controller, both rumble motors can be controlled + individually. + config HID_NTI tristate "NTI keyboard adapters" ---help--- diff --git a/drivers/hid/hid-nintendo.c b/drivers/hid/hid-nintendo.c index 18482f2fe0bf..50242a0b6296 100644 --- a/drivers/hid/hid-nintendo.c +++ b/drivers/hid/hid-nintendo.c @@ -9,6 +9,7 @@ * https://gitlab.com/pjranki/joycon-linux-kernel (Peter Rankin) * https://github.com/FrotBot/SwitchProConLinuxUSB * https://github.com/MTCKC/ProconXInput + * https://github.com/Davidobot/BetterJoyForCemu * hid-wiimote kernel hid driver * hid-logitech-hidpp driver * hid-sony driver @@ -26,6 +27,7 @@ #include #include #include +#include #include #include #include @@ -110,6 +112,120 @@ static const u16 JC_MAX_DPAD_MAG = 1; static const u16 JC_DPAD_FUZZ /*= 0*/; static const u16 JC_DPAD_FLAT /*= 0*/; +/* frequency/amplitude tables for rumble */ +struct joycon_rumble_freq_data { + u16 high; + u8 low; + u16 freq; /* Hz*/ +}; + +struct joycon_rumble_amp_data { + u8 high; + u16 low; + u16 amp; +}; + +/* + * These tables are from + * https://github.com/dekuNukem/Nintendo_Switch_Reverse_Engineering/blob/master/rumble_data_table.md + */ +static const struct joycon_rumble_freq_data joycon_rumble_frequencies[] = { + /* high, low, freq */ + { 0x0000, 0x01, 41 }, { 0x0000, 0x02, 42 }, { 0x0000, 0x03, 43 }, + { 0x0000, 0x04, 44 }, { 0x0000, 0x05, 45 }, { 0x0000, 0x06, 46 }, + { 0x0000, 0x07, 47 }, { 0x0000, 0x08, 48 }, { 0x0000, 0x09, 49 }, + { 0x0000, 0x0A, 50 }, { 0x0000, 0x0B, 51 }, { 0x0000, 0x0C, 52 }, + { 0x0000, 0x0D, 53 }, { 0x0000, 0x0E, 54 }, { 0x0000, 0x0F, 55 }, + { 0x0000, 0x10, 57 }, { 0x0000, 0x11, 58 }, { 0x0000, 0x12, 59 }, + { 0x0000, 0x13, 60 }, { 0x0000, 0x14, 62 }, { 0x0000, 0x15, 63 }, + { 0x0000, 0x16, 64 }, { 0x0000, 0x17, 66 }, { 0x0000, 0x18, 67 }, + { 0x0000, 0x19, 69 }, { 0x0000, 0x1A, 70 }, { 0x0000, 0x1B, 72 }, + { 0x0000, 0x1C, 73 }, { 0x0000, 0x1D, 75 }, { 0x0000, 0x1e, 77 }, + { 0x0000, 0x1f, 78 }, { 0x0000, 0x20, 80 }, { 0x0400, 0x21, 82 }, + { 0x0800, 0x22, 84 }, { 0x0c00, 0x23, 85 }, { 0x1000, 0x24, 87 }, + { 0x1400, 0x25, 89 }, { 0x1800, 0x26, 91 }, { 0x1c00, 0x27, 93 }, + { 0x2000, 0x28, 95 }, { 0x2400, 0x29, 97 }, { 0x2800, 0x2a, 99 }, + { 0x2c00, 0x2b, 102 }, { 0x3000, 0x2c, 104 }, { 0x3400, 0x2d, 106 }, + { 0x3800, 0x2e, 108 }, { 0x3c00, 0x2f, 111 }, { 0x4000, 0x30, 113 }, + { 0x4400, 0x31, 116 }, { 0x4800, 0x32, 118 }, { 0x4c00, 0x33, 121 }, + { 0x5000, 0x34, 123 }, { 0x5400, 0x35, 126 }, { 0x5800, 0x36, 129 }, + { 0x5c00, 0x37, 132 }, { 0x6000, 0x38, 135 }, { 0x6400, 0x39, 137 }, + { 0x6800, 0x3a, 141 }, { 0x6c00, 0x3b, 144 }, { 0x7000, 0x3c, 147 }, + { 0x7400, 0x3d, 150 }, { 0x7800, 0x3e, 153 }, { 0x7c00, 0x3f, 157 }, + { 0x8000, 0x40, 160 }, { 0x8400, 0x41, 164 }, { 0x8800, 0x42, 167 }, + { 0x8c00, 0x43, 171 }, { 0x9000, 0x44, 174 }, { 0x9400, 0x45, 178 }, + { 0x9800, 0x46, 182 }, { 0x9c00, 0x47, 186 }, { 0xa000, 0x48, 190 }, + { 0xa400, 0x49, 194 }, { 0xa800, 0x4a, 199 }, { 0xac00, 0x4b, 203 }, + { 0xb000, 0x4c, 207 }, { 0xb400, 0x4d, 212 }, { 0xb800, 0x4e, 217 }, + { 0xbc00, 0x4f, 221 }, { 0xc000, 0x50, 226 }, { 0xc400, 0x51, 231 }, + { 0xc800, 0x52, 236 }, { 0xcc00, 0x53, 241 }, { 0xd000, 0x54, 247 }, + { 0xd400, 0x55, 252 }, { 0xd800, 0x56, 258 }, { 0xdc00, 0x57, 263 }, + { 0xe000, 0x58, 269 }, { 0xe400, 0x59, 275 }, { 0xe800, 0x5a, 281 }, + { 0xec00, 0x5b, 287 }, { 0xf000, 0x5c, 293 }, { 0xf400, 0x5d, 300 }, + { 0xf800, 0x5e, 306 }, { 0xfc00, 0x5f, 313 }, { 0x0001, 0x60, 320 }, + { 0x0401, 0x61, 327 }, { 0x0801, 0x62, 334 }, { 0x0c01, 0x63, 341 }, + { 0x1001, 0x64, 349 }, { 0x1401, 0x65, 357 }, { 0x1801, 0x66, 364 }, + { 0x1c01, 0x67, 372 }, { 0x2001, 0x68, 381 }, { 0x2401, 0x69, 389 }, + { 0x2801, 0x6a, 397 }, { 0x2c01, 0x6b, 406 }, { 0x3001, 0x6c, 415 }, + { 0x3401, 0x6d, 424 }, { 0x3801, 0x6e, 433 }, { 0x3c01, 0x6f, 443 }, + { 0x4001, 0x70, 453 }, { 0x4401, 0x71, 462 }, { 0x4801, 0x72, 473 }, + { 0x4c01, 0x73, 483 }, { 0x5001, 0x74, 494 }, { 0x5401, 0x75, 504 }, + { 0x5801, 0x76, 515 }, { 0x5c01, 0x77, 527 }, { 0x6001, 0x78, 538 }, + { 0x6401, 0x79, 550 }, { 0x6801, 0x7a, 562 }, { 0x6c01, 0x7b, 574 }, + { 0x7001, 0x7c, 587 }, { 0x7401, 0x7d, 600 }, { 0x7801, 0x7e, 613 }, + { 0x7c01, 0x7f, 626 }, { 0x8001, 0x00, 640 }, { 0x8401, 0x00, 654 }, + { 0x8801, 0x00, 668 }, { 0x8c01, 0x00, 683 }, { 0x9001, 0x00, 698 }, + { 0x9401, 0x00, 713 }, { 0x9801, 0x00, 729 }, { 0x9c01, 0x00, 745 }, + { 0xa001, 0x00, 761 }, { 0xa401, 0x00, 778 }, { 0xa801, 0x00, 795 }, + { 0xac01, 0x00, 812 }, { 0xb001, 0x00, 830 }, { 0xb401, 0x00, 848 }, + { 0xb801, 0x00, 867 }, { 0xbc01, 0x00, 886 }, { 0xc001, 0x00, 905 }, + { 0xc401, 0x00, 925 }, { 0xc801, 0x00, 945 }, { 0xcc01, 0x00, 966 }, + { 0xd001, 0x00, 987 }, { 0xd401, 0x00, 1009 }, { 0xd801, 0x00, 1031 }, + { 0xdc01, 0x00, 1053 }, { 0xe001, 0x00, 1076 }, { 0xe401, 0x00, 1100 }, + { 0xe801, 0x00, 1124 }, { 0xec01, 0x00, 1149 }, { 0xf001, 0x00, 1174 }, + { 0xf401, 0x00, 1199 }, { 0xf801, 0x00, 1226 }, { 0xfc01, 0x00, 1253 } +}; + +#define joycon_max_rumble_amp (1003) +static const struct joycon_rumble_amp_data joycon_rumble_amplitudes[] = { + /* high, low, amp */ + { 0x00, 0x0040, 0 }, + { 0x02, 0x8040, 10 }, { 0x04, 0x0041, 12 }, { 0x06, 0x8041, 14 }, + { 0x08, 0x0042, 17 }, { 0x0a, 0x8042, 20 }, { 0x0c, 0x0043, 24 }, + { 0x0e, 0x8043, 28 }, { 0x10, 0x0044, 33 }, { 0x12, 0x8044, 40 }, + { 0x14, 0x0045, 47 }, { 0x16, 0x8045, 56 }, { 0x18, 0x0046, 67 }, + { 0x1a, 0x8046, 80 }, { 0x1c, 0x0047, 95 }, { 0x1e, 0x8047, 112 }, + { 0x20, 0x0048, 117 }, { 0x22, 0x8048, 123 }, { 0x24, 0x0049, 128 }, + { 0x26, 0x8049, 134 }, { 0x28, 0x004a, 140 }, { 0x2a, 0x804a, 146 }, + { 0x2c, 0x004b, 152 }, { 0x2e, 0x804b, 159 }, { 0x30, 0x004c, 166 }, + { 0x32, 0x804c, 173 }, { 0x34, 0x004d, 181 }, { 0x36, 0x804d, 189 }, + { 0x38, 0x004e, 198 }, { 0x3a, 0x804e, 206 }, { 0x3c, 0x004f, 215 }, + { 0x3e, 0x804f, 225 }, { 0x40, 0x0050, 230 }, { 0x42, 0x8050, 235 }, + { 0x44, 0x0051, 240 }, { 0x46, 0x8051, 245 }, { 0x48, 0x0052, 251 }, + { 0x4a, 0x8052, 256 }, { 0x4c, 0x0053, 262 }, { 0x4e, 0x8053, 268 }, + { 0x50, 0x0054, 273 }, { 0x52, 0x8054, 279 }, { 0x54, 0x0055, 286 }, + { 0x56, 0x8055, 292 }, { 0x58, 0x0056, 298 }, { 0x5a, 0x8056, 305 }, + { 0x5c, 0x0057, 311 }, { 0x5e, 0x8057, 318 }, { 0x60, 0x0058, 325 }, + { 0x62, 0x8058, 332 }, { 0x64, 0x0059, 340 }, { 0x66, 0x8059, 347 }, + { 0x68, 0x005a, 355 }, { 0x6a, 0x805a, 362 }, { 0x6c, 0x005b, 370 }, + { 0x6e, 0x805b, 378 }, { 0x70, 0x005c, 387 }, { 0x72, 0x805c, 395 }, + { 0x74, 0x005d, 404 }, { 0x76, 0x805d, 413 }, { 0x78, 0x005e, 422 }, + { 0x7a, 0x805e, 431 }, { 0x7c, 0x005f, 440 }, { 0x7e, 0x805f, 450 }, + { 0x80, 0x0060, 460 }, { 0x82, 0x8060, 470 }, { 0x84, 0x0061, 480 }, + { 0x86, 0x8061, 491 }, { 0x88, 0x0062, 501 }, { 0x8a, 0x8062, 512 }, + { 0x8c, 0x0063, 524 }, { 0x8e, 0x8063, 535 }, { 0x90, 0x0064, 547 }, + { 0x92, 0x8064, 559 }, { 0x94, 0x0065, 571 }, { 0x96, 0x8065, 584 }, + { 0x98, 0x0066, 596 }, { 0x9a, 0x8066, 609 }, { 0x9c, 0x0067, 623 }, + { 0x9e, 0x8067, 636 }, { 0xa0, 0x0068, 650 }, { 0xa2, 0x8068, 665 }, + { 0xa4, 0x0069, 679 }, { 0xa6, 0x8069, 694 }, { 0xa8, 0x006a, 709 }, + { 0xaa, 0x806a, 725 }, { 0xac, 0x006b, 741 }, { 0xae, 0x806b, 757 }, + { 0xb0, 0x006c, 773 }, { 0xb2, 0x806c, 790 }, { 0xb4, 0x006d, 808 }, + { 0xb6, 0x806d, 825 }, { 0xb8, 0x006e, 843 }, { 0xba, 0x806e, 862 }, + { 0xbc, 0x006f, 881 }, { 0xbe, 0x806f, 900 }, { 0xc0, 0x0070, 920 }, + { 0xc2, 0x8070, 940 }, { 0xc4, 0x0071, 960 }, { 0xc6, 0x8071, 981 }, + { 0xc8, 0x0072, joycon_max_rumble_amp } +}; + /* States for controller state machine */ enum joycon_ctlr_state { JOYCON_CTLR_STATE_INIT, @@ -187,6 +303,12 @@ struct joycon_input_report { #define JC_MAX_RESP_SIZE (sizeof(struct joycon_input_report) + 35) #define JC_NUM_LEDS 4 +#define JC_RUMBLE_DATA_SIZE 8 +#define JC_RUMBLE_QUEUE_SIZE 8 + +static const u16 JC_RUMBLE_DFLT_LOW_FREQ = 160; +static const u16 JC_RUMBLE_DFLT_HIGH_FREQ = 320; +static const u16 JC_RUMBLE_PERIOD_MS = 50; /* Each physical controller is associated with a joycon_ctlr struct */ struct joycon_ctlr { @@ -219,6 +341,18 @@ struct joycon_ctlr { u8 battery_capacity; bool battery_charging; bool host_powered; + + /* rumble */ + u8 rumble_data[JC_RUMBLE_QUEUE_SIZE][JC_RUMBLE_DATA_SIZE]; + int rumble_queue_head; + int rumble_queue_tail; + struct workqueue_struct *rumble_queue; + struct work_struct rumble_worker; + unsigned int rumble_msecs; + u16 rumble_ll_freq; + u16 rumble_lh_freq; + u16 rumble_rl_freq; + u16 rumble_rh_freq; }; static int __joycon_hid_send(struct hid_device *hdev, u8 *data, size_t len) @@ -275,6 +409,12 @@ static int joycon_send_subcmd(struct joycon_ctlr *ctlr, size_t data_len) { int ret; + unsigned long flags; + + spin_lock_irqsave(&ctlr->lock, flags); + memcpy(subcmd->rumble_data, ctlr->rumble_data[ctlr->rumble_queue_tail], + JC_RUMBLE_DATA_SIZE); + spin_unlock_irqrestore(&ctlr->lock, flags); subcmd->output_id = JC_OUTPUT_RUMBLE_AND_SUBCMD; subcmd->packet_num = ctlr->subcmd_num; @@ -427,6 +567,19 @@ static int joycon_set_report_mode(struct joycon_ctlr *ctlr) return joycon_send_subcmd(ctlr, req, 1); } +static int joycon_enable_rumble(struct joycon_ctlr *ctlr, bool enable) +{ + struct joycon_subcmd_request *req; + u8 buffer[sizeof(*req) + 1] = { 0 }; + + req = (struct joycon_subcmd_request *)buffer; + req->subcmd_id = JC_SUBCMD_ENABLE_VIBRATION; + req->data[0] = enable ? 0x01 : 0x00; + + hid_dbg(ctlr->hdev, "%s rumble\n", enable ? "enabling" : "disabling"); + return joycon_send_subcmd(ctlr, req, 1); +} + static s32 joycon_map_stick_val(struct joycon_stick_cal *cal, s32 val) { s32 center = cal->center; @@ -453,10 +606,15 @@ static void joycon_parse_report(struct joycon_ctlr *ctlr, u8 tmp; u32 btns; u32 id = ctlr->hdev->product; + unsigned long msecs = jiffies_to_msecs(jiffies); + + spin_lock_irqsave(&ctlr->lock, flags); + if (IS_ENABLED(CONFIG_NINTENDO_FF) && rep->vibrator_report && + (msecs - ctlr->rumble_msecs) >= JC_RUMBLE_PERIOD_MS) + queue_work(ctlr->rumble_queue, &ctlr->rumble_worker); /* Parse the battery status */ tmp = rep->bat_con; - spin_lock_irqsave(&ctlr->lock, flags); ctlr->host_powered = tmp & BIT(0); ctlr->battery_charging = tmp & BIT(4); tmp = tmp >> 5; @@ -579,6 +737,161 @@ static void joycon_parse_report(struct joycon_ctlr *ctlr, input_sync(dev); } +static void joycon_rumble_worker(struct work_struct *work) +{ + struct joycon_ctlr *ctlr = container_of(work, struct joycon_ctlr, + rumble_worker); + unsigned long flags; + bool again = true; + int ret; + + while (again) { + mutex_lock(&ctlr->output_mutex); + ret = joycon_enable_rumble(ctlr, true); + mutex_unlock(&ctlr->output_mutex); + if (ret < 0) + hid_warn(ctlr->hdev, "Failed to set rumble; e=%d", ret); + + spin_lock_irqsave(&ctlr->lock, flags); + ctlr->rumble_msecs = jiffies_to_msecs(jiffies); + if (ctlr->rumble_queue_tail != ctlr->rumble_queue_head) { + if (++ctlr->rumble_queue_tail >= JC_RUMBLE_QUEUE_SIZE) + ctlr->rumble_queue_tail = 0; + } else { + again = false; + } + spin_unlock_irqrestore(&ctlr->lock, flags); + } +} + +#if IS_ENABLED(CONFIG_NINTENDO_FF) +static struct joycon_rumble_freq_data joycon_find_rumble_freq(u16 freq) +{ + const size_t length = ARRAY_SIZE(joycon_rumble_frequencies); + const struct joycon_rumble_freq_data *data = joycon_rumble_frequencies; + int i = 0; + + if (freq > data[0].freq) { + for (i = 1; i < length - 1; i++) { + if (freq > data[i - 1].freq && freq <= data[i].freq) + break; + } + } + + return data[i]; +} + +static struct joycon_rumble_amp_data joycon_find_rumble_amp(u16 amp) +{ + const size_t length = ARRAY_SIZE(joycon_rumble_amplitudes); + const struct joycon_rumble_amp_data *data = joycon_rumble_amplitudes; + int i = 0; + + if (amp > data[0].amp) { + for (i = 1; i < length - 1; i++) { + if (amp > data[i - 1].amp && amp <= data[i].amp) + break; + } + } + + return data[i]; +} + +static void joycon_encode_rumble(u8 *data, u16 freq_low, u16 freq_high, u16 amp) +{ + struct joycon_rumble_freq_data freq_data_low; + struct joycon_rumble_freq_data freq_data_high; + struct joycon_rumble_amp_data amp_data; + + freq_data_low = joycon_find_rumble_freq(freq_low); + freq_data_high = joycon_find_rumble_freq(freq_high); + amp_data = joycon_find_rumble_amp(amp); + + data[0] = (freq_data_high.high >> 8) & 0xFF; + data[1] = (freq_data_high.high & 0xFF) + amp_data.high; + data[2] = freq_data_low.low + ((amp_data.low >> 8) & 0xFF); + data[3] = amp_data.low & 0xFF; +} + +static const u16 JOYCON_MAX_RUMBLE_HIGH_FREQ = 1253; +static const u16 JOYCON_MIN_RUMBLE_HIGH_FREQ = 82; +static const u16 JOYCON_MAX_RUMBLE_LOW_FREQ = 626; +static const u16 JOYCON_MIN_RUMBLE_LOW_FREQ = 41; + +static void joycon_clamp_rumble_freqs(struct joycon_ctlr *ctlr) +{ + unsigned long flags; + + spin_lock_irqsave(&ctlr->lock, flags); + ctlr->rumble_ll_freq = clamp(ctlr->rumble_ll_freq, + JOYCON_MIN_RUMBLE_LOW_FREQ, + JOYCON_MAX_RUMBLE_LOW_FREQ); + ctlr->rumble_lh_freq = clamp(ctlr->rumble_lh_freq, + JOYCON_MIN_RUMBLE_HIGH_FREQ, + JOYCON_MAX_RUMBLE_HIGH_FREQ); + ctlr->rumble_rl_freq = clamp(ctlr->rumble_rl_freq, + JOYCON_MIN_RUMBLE_LOW_FREQ, + JOYCON_MAX_RUMBLE_LOW_FREQ); + ctlr->rumble_rh_freq = clamp(ctlr->rumble_rh_freq, + JOYCON_MIN_RUMBLE_HIGH_FREQ, + JOYCON_MAX_RUMBLE_HIGH_FREQ); + spin_unlock_irqrestore(&ctlr->lock, flags); +} + +static int joycon_set_rumble(struct joycon_ctlr *ctlr, u16 amp_r, u16 amp_l, + bool schedule_now) +{ + u8 data[JC_RUMBLE_DATA_SIZE]; + u16 amp; + u16 freq_r_low; + u16 freq_r_high; + u16 freq_l_low; + u16 freq_l_high; + unsigned long flags; + + spin_lock_irqsave(&ctlr->lock, flags); + freq_r_low = ctlr->rumble_rl_freq; + freq_r_high = ctlr->rumble_rh_freq; + freq_l_low = ctlr->rumble_ll_freq; + freq_l_high = ctlr->rumble_lh_freq; + spin_unlock_irqrestore(&ctlr->lock, flags); + + /* right joy-con */ + amp = amp_r * (u32)joycon_max_rumble_amp / 65535; + joycon_encode_rumble(data + 4, freq_r_low, freq_r_high, amp); + + /* left joy-con */ + amp = amp_l * (u32)joycon_max_rumble_amp / 65535; + joycon_encode_rumble(data, freq_l_low, freq_l_high, amp); + + spin_lock_irqsave(&ctlr->lock, flags); + if (++ctlr->rumble_queue_head >= JC_RUMBLE_QUEUE_SIZE) + ctlr->rumble_queue_head = 0; + memcpy(ctlr->rumble_data[ctlr->rumble_queue_head], data, + JC_RUMBLE_DATA_SIZE); + spin_unlock_irqrestore(&ctlr->lock, flags); + + /* don't wait for the periodic send (reduces latency) */ + if (schedule_now) + queue_work(ctlr->rumble_queue, &ctlr->rumble_worker); + + return 0; +} + +static int joycon_play_effect(struct input_dev *dev, void *data, + struct ff_effect *effect) +{ + struct joycon_ctlr *ctlr = input_get_drvdata(dev); + + if (effect->type != FF_RUMBLE) + return 0; + + return joycon_set_rumble(ctlr, + effect->u.rumble.weak_magnitude, + effect->u.rumble.strong_magnitude, + true); +} +#endif /* IS_ENABLED(CONFIG_NINTENDO_FF) */ static const unsigned int joycon_button_inputs_l[] = { BTN_SELECT, BTN_Z, BTN_THUMBL, @@ -682,6 +995,19 @@ static int joycon_input_create(struct joycon_ctlr *ctlr) input_set_capability(ctlr->input, EV_KEY, BTN_TL2); } +#if IS_ENABLED(CONFIG_NINTENDO_FF) + /* set up rumble */ + input_set_capability(ctlr->input, EV_FF, FF_RUMBLE); + input_ff_create_memless(ctlr->input, NULL, joycon_play_effect); + ctlr->rumble_ll_freq = JC_RUMBLE_DFLT_LOW_FREQ; + ctlr->rumble_lh_freq = JC_RUMBLE_DFLT_HIGH_FREQ; + ctlr->rumble_rl_freq = JC_RUMBLE_DFLT_LOW_FREQ; + ctlr->rumble_rh_freq = JC_RUMBLE_DFLT_HIGH_FREQ; + joycon_clamp_rumble_freqs(ctlr); + joycon_set_rumble(ctlr, 0, 0, false); + ctlr->rumble_msecs = jiffies_to_msecs(jiffies); +#endif + ret = input_register_device(ctlr->input); if (ret) return ret; @@ -1017,21 +1343,26 @@ static int nintendo_hid_probe(struct hid_device *hdev, ctlr->hdev = hdev; ctlr->ctlr_state = JOYCON_CTLR_STATE_INIT; + ctlr->rumble_queue_head = JC_RUMBLE_QUEUE_SIZE - 1; + ctlr->rumble_queue_tail = 0; hid_set_drvdata(hdev, ctlr); mutex_init(&ctlr->output_mutex); init_waitqueue_head(&ctlr->wait); spin_lock_init(&ctlr->lock); + ctlr->rumble_queue = alloc_workqueue("hid-nintendo-rumble_wq", + WQ_FREEZABLE | WQ_MEM_RECLAIM, 0); + INIT_WORK(&ctlr->rumble_worker, joycon_rumble_worker); ret = hid_parse(hdev); if (ret) { hid_err(hdev, "HID parse failed\n"); - goto err; + goto err_wq; } ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW); if (ret) { hid_err(hdev, "HW start failed\n"); - goto err; + goto err_wq; } ret = hid_hw_open(hdev); @@ -1084,6 +1415,13 @@ static int nintendo_hid_probe(struct hid_device *hdev, goto err_mutex; } + /* Enable rumble */ + ret = joycon_enable_rumble(ctlr, true); + if (ret) { + hid_err(hdev, "Failed to enable rumble; ret=%d\n", ret); + goto err_mutex; + } + mutex_unlock(&ctlr->output_mutex); /* Initialize the leds */ @@ -1117,6 +1455,8 @@ static int nintendo_hid_probe(struct hid_device *hdev, hid_hw_close(hdev); err_stop: hid_hw_stop(hdev); +err_wq: + destroy_workqueue(ctlr->rumble_queue); err: hid_err(hdev, "probe - fail = %d\n", ret); return ret; @@ -1124,7 +1464,10 @@ static int nintendo_hid_probe(struct hid_device *hdev, static void nintendo_hid_remove(struct hid_device *hdev) { + struct joycon_ctlr *ctlr = hid_get_drvdata(hdev); + hid_dbg(hdev, "remove\n"); + destroy_workqueue(ctlr->rumble_queue); hid_hw_close(hdev); hid_hw_stop(hdev); }