From nobody Thu Apr 2 21:58:40 2026 Received: from layka.disroot.org (layka.disroot.org [178.21.23.139]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CC04C2FF657; Wed, 1 Apr 2026 18:07:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.21.23.139 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775066843; cv=none; b=RncRFwnZ2FVwYxSS/0nScmc9CTRsYTabRjgjHVqzV2QoLCaZz/T8fM5ToqZzT2Nf8z0USPiblHBzEPc944RplobtDpjWk9FnS86fekwvWqJsZvLhTHTYOgCLzMJ1nRsRYPaUhYeKSGBYFOthXrzQhSrePaj6y1NAZR+T1LiDyJc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775066843; c=relaxed/simple; bh=GwaO3Jgs7I+IjOxIFQXKkawzKx2llBDskSmUtS3EUww=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Oy6tdJ3aERCmro83daLxSJ4soiYOrJfMjwC9BgoaSsMHrCAfaz4uq91oKBJVh1Wt1lEIyipOsn895UMAagzCJnDoZod9jyNV82tOLwW7F5/hwRIzJrrNosW52Q96dFdRwL6Kh9zP2AffUFkJurlJvxD5FT5GFjtQ2wEkuuvz3fQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=disroot.org; spf=pass smtp.mailfrom=disroot.org; dkim=pass (2048-bit key) header.d=disroot.org header.i=@disroot.org header.b=e2WbuLd6; arc=none smtp.client-ip=178.21.23.139 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=disroot.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=disroot.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=disroot.org header.i=@disroot.org header.b="e2WbuLd6" Received: from [127.0.0.1] (localhost [127.0.0.1]) by disroot.org (Postfix) with ESMTP id 98F1825D5A; Wed, 1 Apr 2026 20:07:19 +0200 (CEST) X-Virus-Scanned: SPAM Filter at disroot.org Received: from layka.disroot.org ([127.0.0.1]) by localhost (disroot.org [127.0.0.1]) (amavis, port 10024) with ESMTP id PnB8oaF5aTri; Wed, 1 Apr 2026 20:07:19 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=disroot.org; s=mail; t=1775066839; bh=GwaO3Jgs7I+IjOxIFQXKkawzKx2llBDskSmUtS3EUww=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=e2WbuLd62v/KW+PNwQeg5FXWeJvXBVG2TAI7viShUpEERWjhShMa4/h8UAjnz03Fc 1xxCjqomwstCsU8/5aZHRLBvolJryQ1nNWvMccN4pjLZ9LMikiMHYbXtPFqpBIEmmf TQi7kdIwui180//9fXJV0u7x1/5zxyCpF01/uDGUiokZqcGH8kDnNbNk+ofbFtZWEe 4mnVQPDunQmOrfU/ltmkB6LBHEzXC2GD/orWY+1Ra9r7gJoH8+neaQUod0YbKosf5R SdAETr7BnuH8vaasDpptws4Q1DqI2kvbWXz++FEzeuY+XIFZG3yf9/sc1E8g2Z7Kk+ ZJbB0AUYppqyg== From: Rustam Adilov To: Chris Packham , Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Rustam Adilov Subject: [PATCH v6 3/8] i2c: rtl9300: introduce F_BUSY to the reg_fields struct Date: Wed, 1 Apr 2026 23:06:43 +0500 Message-ID: <20260401180648.337834-4-adilov@disroot.org> In-Reply-To: <20260401180648.337834-1-adilov@disroot.org> References: <20260401180648.337834-1-adilov@disroot.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" In RTL9607C i2c controller the busy check operation is done on the separate bit of the command register as opposed to self clearing command trigger bit on the rtl9300 and rtl9310 i2c controllers. Introduce a new F_BUSY field to the reg_fields struct for that and change the regmap read poll function to use F_BUSY instead of I2C_TRIG. Reviewed-by: Chris Packham Signed-off-by: Rustam Adilov --- drivers/i2c/busses/i2c-rtl9300.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-rtl9300.c b/drivers/i2c/busses/i2c-rtl9= 300.c index 2cada6038b44..e40b4692a3fa 100644 --- a/drivers/i2c/busses/i2c-rtl9300.c +++ b/drivers/i2c/busses/i2c-rtl9300.c @@ -53,6 +53,7 @@ enum rtl9300_i2c_reg_fields { F_SCL_SEL, F_SDA_OUT_SEL, F_SDA_SEL, + F_BUSY, =20 /* keep last */ F_NUM_FIELDS @@ -262,7 +263,7 @@ static int rtl9300_i2c_do_xfer(struct rtl9300_i2c *i2c,= struct rtl9300_i2c_xfer if (ret) return ret; =20 - ret =3D regmap_field_read_poll_timeout(i2c->fields[F_I2C_TRIG], val, !val= , 100, 100000); + ret =3D regmap_field_read_poll_timeout(i2c->fields[F_BUSY], val, !val, 10= 0, 100000); if (ret) return ret; =20 @@ -505,6 +506,7 @@ static const struct rtl9300_i2c_drv_data rtl9300_i2c_dr= v_data =3D { [F_MEM_ADDR_WIDTH] =3D MST_REG_FIELD(RTL9300_I2C_MST_CTRL2, 2, 3), [F_SCL_FREQ] =3D MST_REG_FIELD(RTL9300_I2C_MST_CTRL2, 0, 1), [F_SDA_SEL] =3D GLB_REG_FIELD(RTL9300_I2C_MST_GLB_CTRL, 0, 7), + [F_BUSY] =3D MST_REG_FIELD(RTL9300_I2C_MST_CTRL1, 0, 0), }, .select_scl =3D rtl9300_i2c_select_scl, .rd_reg =3D RTL9300_I2C_MST_DATA_WORD0, @@ -527,6 +529,7 @@ static const struct rtl9300_i2c_drv_data rtl9310_i2c_dr= v_data =3D { [F_I2C_FAIL] =3D MST_REG_FIELD(RTL9310_I2C_MST_CTRL, 1, 1), [F_I2C_TRIG] =3D MST_REG_FIELD(RTL9310_I2C_MST_CTRL, 0, 0), [F_MEM_ADDR] =3D MST_REG_FIELD(RTL9310_I2C_MST_MEMADDR_CTRL, 0, 23), + [F_BUSY] =3D MST_REG_FIELD(RTL9310_I2C_MST_CTRL, 0, 0), }, .select_scl =3D rtl9310_i2c_select_scl, .rd_reg =3D RTL9310_I2C_MST_DATA_CTRL, --=20 2.53.0