From nobody Tue Feb 10 05:44:37 2026 Received: from mail-wm1-f43.google.com (mail-wm1-f43.google.com [209.85.128.43]) (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 B866123E351 for ; Tue, 8 Apr 2025 20:50:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.43 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744145441; cv=none; b=UXCuGewQG5VR/olYivnsoma8dM8CYDWrHKBiR6ilsB51YHexaNnc0qvjq1douEkv25H+EtOSb6AuwyCD/xOlk4kIQu92QpZCZJclN+4CWkBO7emFwOaLe3d14X92xllAr0dvBGzA91H9VoDkXo7WBNdpL/xiAXrXe4NCO1nFd34= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744145441; c=relaxed/simple; bh=eancYxsdS8ilWV/yH6R/v1xMz01IuEitBHlNQIXr5tw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=P8ZNimd3IiMr40jPhEj2SIV7BJRQUn35zo0wvk8OJmvkoce8onh6rniqW8eBeUMAShszohMoGA5DVAdvFe1z6xQtmAIEBBS9/WdRcqXiqdNv1fQXihNAgHwO/+zhVc1SYW0AdHqTFV203OW6iqwKHPygmBX1bVz2uIdWmTJMFIE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com; spf=pass smtp.mailfrom=baylibre.com; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b=W4XIMVw7; arc=none smtp.client-ip=209.85.128.43 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=baylibre.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b="W4XIMVw7" Received: by mail-wm1-f43.google.com with SMTP id 5b1f17b1804b1-43d04dc73b7so64516285e9.3 for ; Tue, 08 Apr 2025 13:50:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20230601.gappssmtp.com; s=20230601; t=1744145437; x=1744750237; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=4+pYdHOLQi/v2mVLbftWrP4lbnz9O33riEVXb/sTc98=; b=W4XIMVw72kSdnhSAbSV6QBywBdb/MTMhfMjiUDeTDB1urDtah3srR43xpdK2djU0U/ yhaZKtFtdxNUmbQbhKPdHjhPLpuhNf46OUHiOFRImz9a1PmD7pVHiUiws5HtMABUOKsI /5ANXYU4l5FN1KjF6fchwUcaUja6iLYwO86868kuEK9Zwii7nnn2IbXzLbz9kMpmmvs/ iEME3rOIpjeB2ytj1df/8xW1L4QsXdji1vN71fdJ8OXBgsQWILDazRVQgjOFdS7YCHRa xAy5/Q+uUY5v/kLc+LP/0r9ti1LB/cVxLU4+wCpZvx8zGYH2U0A2cOwn7i/Q4PprMbKA 5DLA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1744145437; x=1744750237; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=4+pYdHOLQi/v2mVLbftWrP4lbnz9O33riEVXb/sTc98=; b=fN4LdBBF3DDXFiI4O0yBVdy1tUwL4Qk/TEEhmxUiVq+sLoCQGBtjwDynv+n82QbOrs UcLvFwiLUJJ+hlPoKIjqy4mJNa7RPfhsSM/DvsD2lGhT4XmWbcxNZZcJnRf8D2Xy60pz 9Bv8M4DcQAckoMkTR96B8fI0gXW0VY9bNb4ke5ylnuabJJ8yCkZtMr7sriVsZPGVQrCs s3Fgo1l1UpRuo6A5XALvpvZ1wqprv4O+4n2uZz8f3G4gclG052TLHkaAc2UGSj87XiyW ph+GTCgAxI6dLVkQtazwg5AK7RaE3VuimD26DIAbiXKFhuG5dgxyKkc8RkkJ/3XyI8Xs /5TQ== X-Forwarded-Encrypted: i=1; AJvYcCWZvZXrlDQqhPolEKEqI331SVFssVL8fiV0o5OD7M8DkZbU2ygj2SRqxmPfgFN5c1RUZHk8gM3OQI4U0SI=@vger.kernel.org X-Gm-Message-State: AOJu0YzDUr54KPkyf9RkpcpApXfYSsP6L3+rf67/x3aSROi/KxeytbgB rnjZgh2fXATrTxJocMFsiHfNqy5zE1KbC2akkPQXBbHzhezq9BD7ImiWl8rAj2PR+JaShoAUV4R Y X-Gm-Gg: ASbGncur6/C67e0w+64XzwDCON0MW6M7n/NAlea87DOsZd+bDk65PHQTpV0TFTE8yIU P8AlmdJCOacv9qpdz7v21Qdc9jdqhtm+PhqgVnUikeyEizOHZzr92rnlr0BR13n0EQBHj4wnBSL fZBwSS4Owx+XNjxrkGmrs+U5PuwDt8KszYCjRu2mwWZZJU2ZrwJnO42YsFhncAHiIRMMm0IYz/f 9xGSmK1YZL6RTZYkK11YTrYrN73zxMWE3m9P1hnfafeQdlQBEk1v2Sm/jEBu6Rd9cGJTvMW4spe xtubVny355rJOA7pDkJ5T7SSJmSc6rNTEjDWXR+nkxuBkWPfqJ1spQ7Lhl7q45QndlqRvh6057I swrc2Oz4o2jGxbfE2qz7nAA== X-Google-Smtp-Source: AGHT+IGAqrtAozeX4mHTyoFtvprWgQZcWnfcTxGTeZnvl6CteFk2bRlR166j0MpMYArr04A1quVbUg== X-Received: by 2002:a05:6000:2910:b0:39c:13fd:ec44 with SMTP id ffacd0b85a97d-39d87aa0b71mr528626f8f.5.1744145437456; Tue, 08 Apr 2025 13:50:37 -0700 (PDT) Received: from [192.168.0.2] (host-87-15-70-119.retail.telecomitalia.it. [87.15.70.119]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-39c30226da7sm16367156f8f.98.2025.04.08.13.50.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Apr 2025 13:50:36 -0700 (PDT) From: Angelo Dureghello X-Google-Original-From: Angelo Dureghello Date: Tue, 08 Apr 2025 22:49:00 +0200 Subject: [PATCH 1/2] iio: dac: adi-axi-dac: use unique bus free check Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250408-ad3552r-fix-bus-read-v1-1-37add66aeb08@baylibre.com> References: <20250408-ad3552r-fix-bus-read-v1-0-37add66aeb08@baylibre.com> In-Reply-To: <20250408-ad3552r-fix-bus-read-v1-0-37add66aeb08@baylibre.com> To: Nuno Sa , Lars-Peter Clausen , Michael Hennerich , Jonathan Cameron , David Lechner , Andy Shevchenko Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Jonathan Cameron , Angelo Dureghello X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2602; i=adureghello@baylibre.com; h=from:subject:message-id; bh=ozxNUeMl4HqHZ87vmBOdOVasJbRl377XUsrzZVApVsE=; b=owGbwMvMwCXGf3bn1e/btlsznlZLYkj/2n0oPy5ClFsjKnP6o/Pxwl6+buxbfI7eYf691LSsm 0u0IrG1o5SFQYyLQVZMkaUuMcIk9HaolPICxtkwc1iZQIYwcHEKwEQez2JkeNPS1f78ctFl41zD Y6axbGf7OWdyvPh0OsFX4HZn9SkGDYbfLG9nN7RPeHR+bf08z6sKy1KXtovd/3iu/opRffPk4zf mcQEA X-Developer-Key: i=adureghello@baylibre.com; a=openpgp; fpr=703CDFAD8B573EB00850E38366D1CB9419AF3953 From: Angelo Dureghello Use a unique function for the bus free check by polling, to reduce duplicated code. An error is always thrown in case of timeout. Signed-off-by: Angelo Dureghello --- drivers/iio/dac/adi-axi-dac.c | 36 +++++++++++++++++++++--------------- 1 file changed, 21 insertions(+), 15 deletions(-) diff --git a/drivers/iio/dac/adi-axi-dac.c b/drivers/iio/dac/adi-axi-dac.c index 8ed5ad1fa24cef649056bc5f4ca80abbf28b9323..91557aa6797a3478de3607e5733= c162d7745a3b2 100644 --- a/drivers/iio/dac/adi-axi-dac.c +++ b/drivers/iio/dac/adi-axi-dac.c @@ -635,15 +635,26 @@ static int axi_dac_ddr_disable(struct iio_backend *ba= ck) AXI_DAC_CNTRL_2_SDR_DDR_N); } =20 +static int axi_dac_wait_bus_free(struct axi_dac_state *st) +{ + u32 val; + int ret; + + ret =3D regmap_read_poll_timeout(st->regmap, AXI_DAC_UI_STATUS_REG, val, + FIELD_GET(AXI_DAC_UI_STATUS_IF_BUSY, val) =3D=3D 0, 10, + 100 * KILO); + if (ret =3D=3D -ETIMEDOUT) + dev_err(st->dev, "AXI bus timeout\n"); + + return ret; +} + static int axi_dac_data_stream_enable(struct iio_backend *back) { struct axi_dac_state *st =3D iio_backend_get_priv(back); - int ret, val; + int ret; =20 - ret =3D regmap_read_poll_timeout(st->regmap, - AXI_DAC_UI_STATUS_REG, val, - FIELD_GET(AXI_DAC_UI_STATUS_IF_BUSY, val) =3D=3D 0, - 10, 100 * KILO); + ret =3D axi_dac_wait_bus_free(st); if (ret) return ret; =20 @@ -734,12 +745,9 @@ static int __axi_dac_bus_reg_write(struct iio_backend = *back, u32 reg, if (ret) return ret; =20 - ret =3D regmap_read_poll_timeout(st->regmap, - AXI_DAC_UI_STATUS_REG, ival, - FIELD_GET(AXI_DAC_UI_STATUS_IF_BUSY, ival) =3D=3D 0, - 10, 100 * KILO); - if (ret =3D=3D -ETIMEDOUT) - dev_err(st->dev, "AXI read timeout\n"); + ret =3D axi_dac_wait_bus_free(st); + if (ret) + return ret; =20 /* Cleaning always AXI_DAC_CUSTOM_CTRL_TRANSFER_DATA */ return regmap_clear_bits(st->regmap, AXI_DAC_CUSTOM_CTRL_REG, @@ -779,7 +787,7 @@ static int axi_dac_bus_set_io_mode(struct iio_backend *= back, enum ad3552r_io_mode mode) { struct axi_dac_state *st =3D iio_backend_get_priv(back); - int ival, ret; + int ret; =20 if (mode > AD3552R_IO_MODE_QSPI) return -EINVAL; @@ -792,9 +800,7 @@ static int axi_dac_bus_set_io_mode(struct iio_backend *= back, if (ret) return ret; =20 - return regmap_read_poll_timeout(st->regmap, AXI_DAC_UI_STATUS_REG, ival, - FIELD_GET(AXI_DAC_UI_STATUS_IF_BUSY, ival) =3D=3D 0, 10, - 100 * KILO); + return axi_dac_wait_bus_free(st); } =20 static void axi_dac_child_remove(void *data) --=20 2.49.0