From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 20F7216CD3E; Mon, 5 Aug 2024 17:56:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722880613; cv=none; b=Tht5XyoP/fRclJPC07s7jSkBA4eiKaAFf0q/SbQOGOUtcCa8k+o4lIHIXXcHFmOdfqKbgBAM8/dtRm+AmIYeQDopTjcdF7M7kHSooGYX4mHSJcsjsjA5Ssv7e/y+9mlQwvWwDKbGsp5G1f829PxfKkJUhp/2mtxTgNkCT3DP+UY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722880613; c=relaxed/simple; bh=pF7B1EJOvfIsXUHadIn5iapfDm/Q6ZxnUOD1S8JlJrE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=tP6btia1cZ3N4fqhe5EbHKgg4TBKAR5E5b7z+/3fx23VBoJzyUm63Ct7neYXntkSz4qT90oxTZvtQkowFqgzLpSsbphMqab5Kw+dqDogGXpOFyWTaAwz02Rwg9c33d1j4Z1pf3AJmG7aaIuKQyL2dmroma7NRWPZRBqA/nB5U+E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=qmvD66hB; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="qmvD66hB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C8190C4AF0B; Mon, 5 Aug 2024 17:56:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722880612; bh=pF7B1EJOvfIsXUHadIn5iapfDm/Q6ZxnUOD1S8JlJrE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qmvD66hB0lskuBmQ7R7RU3i3oU4aoG7ic7M0duYLL9a+yPLAEpdj04b78rHhT50IY 0tTMGsm3dyWxUptPf2GA5JY7V4+f+8rQu3DnARqGK22M9XCle6hbdiC/RfTqUVKffo +pBkzG8Bnlcufpr92tYnxiUT3MB6+UPBOfdFaPx4u83Q/i3Ljt8m1rRGg1M5AJeVJO oW4Wm5cvQRXBcBa3xvgbO/NrXZKW85piAMKsBCMP3b+v+POm/DaFkWS0YOS19Cd2iR 2fpFJbyRiSd0hu8COCmr3I1h5WsQHmM8Jpw8iOBSzLyuKF1OET1mzumfA/D/Xd5Z1h 3CRHo/GAepI0g== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Takashi Iwai , Sasha Levin , perex@perex.cz, tiwai@suse.com, linux-sound@vger.kernel.org Subject: [PATCH AUTOSEL 6.10 10/16] ALSA: ump: Transmit RPN/NRPN message at each MSB/LSB data reception Date: Mon, 5 Aug 2024 13:55:42 -0400 Message-ID: <20240805175618.3249561-10-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240805175618.3249561-1-sashal@kernel.org> References: <20240805175618.3249561-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.10.3 Content-Transfer-Encoding: 8bit From: Takashi Iwai [ Upstream commit e6ce8a28c768dbbad3f818db286cd0f4c7a921a8 ] The UMP 1.1 spec says that an RPN/NRPN should be sent when one of the following occurs: * a CC 38 is received * a subsequent CC 6 is received * a CC 98, 99, 100, and 101 is received, indicating the last RPN/NRPN message has ended and a new one has started That said, we should send a partial data even if it's not fully filled. Let's change the UMP conversion helper code to follow that rule. Link: https://patch.msgid.link/20240731130528.12600-2-tiwai@suse.de Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin --- include/sound/ump_convert.h | 1 + sound/core/ump_convert.c | 49 ++++++++++++++++++++++++------------- 2 files changed, 33 insertions(+), 17 deletions(-) diff --git a/include/sound/ump_convert.h b/include/sound/ump_convert.h index 28c364c63245d..d099ae27f8491 100644 --- a/include/sound/ump_convert.h +++ b/include/sound/ump_convert.h @@ -13,6 +13,7 @@ struct ump_cvt_to_ump_bank { unsigned char cc_nrpn_msb, cc_nrpn_lsb; unsigned char cc_data_msb, cc_data_lsb; unsigned char cc_bank_msb, cc_bank_lsb; + bool cc_data_msb_set, cc_data_lsb_set; }; /* context for converting from MIDI1 byte stream to UMP packet */ diff --git a/sound/core/ump_convert.c b/sound/core/ump_convert.c index f67c44c83fde4..5d1b85e7ac165 100644 --- a/sound/core/ump_convert.c +++ b/sound/core/ump_convert.c @@ -287,25 +287,37 @@ static int cvt_legacy_system_to_ump(struct ump_cvt_to_ump *cvt, return 4; } -static void fill_rpn(struct ump_cvt_to_ump_bank *cc, - union snd_ump_midi2_msg *midi2) +static int fill_rpn(struct ump_cvt_to_ump_bank *cc, + union snd_ump_midi2_msg *midi2, + bool flush) { + if (!(cc->cc_data_lsb_set || cc->cc_data_msb_set)) + return 0; // skip + /* when not flushing, wait for complete data set */ + if (!flush && (!cc->cc_data_lsb_set || !cc->cc_data_msb_set)) + return 0; // skip + if (cc->rpn_set) { midi2->rpn.status = UMP_MSG_STATUS_RPN; midi2->rpn.bank = cc->cc_rpn_msb; midi2->rpn.index = cc->cc_rpn_lsb; - cc->rpn_set = 0; - cc->cc_rpn_msb = cc->cc_rpn_lsb = 0; - } else { + } else if (cc->nrpn_set) { midi2->rpn.status = UMP_MSG_STATUS_NRPN; midi2->rpn.bank = cc->cc_nrpn_msb; midi2->rpn.index = cc->cc_nrpn_lsb; - cc->nrpn_set = 0; - cc->cc_nrpn_msb = cc->cc_nrpn_lsb = 0; + } else { + return 0; // skip } + midi2->rpn.data = upscale_14_to_32bit((cc->cc_data_msb << 7) | cc->cc_data_lsb); + + cc->rpn_set = 0; + cc->nrpn_set = 0; + cc->cc_rpn_msb = cc->cc_rpn_lsb = 0; cc->cc_data_msb = cc->cc_data_lsb = 0; + cc->cc_data_msb_set = cc->cc_data_lsb_set = 0; + return 1; } /* convert to a MIDI 1.0 Channel Voice message */ @@ -318,6 +330,7 @@ static int cvt_legacy_cmd_to_ump(struct ump_cvt_to_ump *cvt, struct ump_cvt_to_ump_bank *cc; union snd_ump_midi2_msg *midi2 = (union snd_ump_midi2_msg *)data; unsigned char status, channel; + int ret; BUILD_BUG_ON(sizeof(union snd_ump_midi1_msg) != 4); BUILD_BUG_ON(sizeof(union snd_ump_midi2_msg) != 8); @@ -358,24 +371,29 @@ static int cvt_legacy_cmd_to_ump(struct ump_cvt_to_ump *cvt, case UMP_MSG_STATUS_CC: switch (buf[1]) { case UMP_CC_RPN_MSB: + ret = fill_rpn(cc, midi2, true); cc->rpn_set = 1; cc->cc_rpn_msb = buf[2]; - return 0; // skip + return ret; case UMP_CC_RPN_LSB: + ret = fill_rpn(cc, midi2, true); cc->rpn_set = 1; cc->cc_rpn_lsb = buf[2]; - return 0; // skip + return ret; case UMP_CC_NRPN_MSB: + ret = fill_rpn(cc, midi2, true); cc->nrpn_set = 1; cc->cc_nrpn_msb = buf[2]; - return 0; // skip + return ret; case UMP_CC_NRPN_LSB: + ret = fill_rpn(cc, midi2, true); cc->nrpn_set = 1; cc->cc_nrpn_lsb = buf[2]; - return 0; // skip + return ret; case UMP_CC_DATA: + cc->cc_data_msb_set = 1; cc->cc_data_msb = buf[2]; - return 0; // skip + return fill_rpn(cc, midi2, false); case UMP_CC_BANK_SELECT: cc->bank_set = 1; cc->cc_bank_msb = buf[2]; @@ -385,12 +403,9 @@ static int cvt_legacy_cmd_to_ump(struct ump_cvt_to_ump *cvt, cc->cc_bank_lsb = buf[2]; return 0; // skip case UMP_CC_DATA_LSB: + cc->cc_data_lsb_set = 1; cc->cc_data_lsb = buf[2]; - if (cc->rpn_set || cc->nrpn_set) - fill_rpn(cc, midi2); - else - return 0; // skip - break; + return fill_rpn(cc, midi2, false); default: midi2->cc.index = buf[1]; midi2->cc.data = upscale_7_to_32bit(buf[2]); -- 2.43.0