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From: Bard Liao <yung-chuan.liao@linux.intel.com>
To: linux-sound@vger.kernel.org, vkoul@kernel.org
Cc: vinod.koul@linaro.org, linux-kernel@vger.kernel.org,
	pierre-louis.bossart@linux.dev, bard.liao@intel.com
Subject: [PATCH 3/7] soundwire: cadence_master: set data_per_frame as frame capability
Date: Tue, 14 Oct 2025 11:14:46 +0800	[thread overview]
Message-ID: <20251014031450.3781789-4-yung-chuan.liao@linux.intel.com> (raw)
In-Reply-To: <20251014031450.3781789-1-yung-chuan.liao@linux.intel.com>

data_per_frame will be used for preparing the TX buffer and we may add
some fake frames to ensure the data in the buffer will be flushed.
So that it should indicate the frame capability even if the required
data bytes are less than the frame capability.

Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
---
 drivers/soundwire/cadence_master.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c
index c59a98b408b3..178341410909 100644
--- a/drivers/soundwire/cadence_master.c
+++ b/drivers/soundwire/cadence_master.c
@@ -2114,9 +2114,6 @@ int sdw_cdns_bpt_find_buffer_sizes(int command, /* 0: write, 1: read */
 	if (!actual_bpt_bytes)
 		return -EINVAL;
 
-	if (data_bytes < actual_bpt_bytes)
-		actual_bpt_bytes = data_bytes;
-
 	/*
 	 * the caller may want to set the number of bytes per frame,
 	 * allow when possible
@@ -2126,6 +2123,9 @@ int sdw_cdns_bpt_find_buffer_sizes(int command, /* 0: write, 1: read */
 
 	*data_per_frame = actual_bpt_bytes;
 
+	if (data_bytes < actual_bpt_bytes)
+		actual_bpt_bytes = data_bytes;
+
 	if (command == 0) {
 		/*
 		 * for writes we need to send all the data_bytes per frame,
-- 
2.43.0


  parent reply	other threads:[~2025-10-14  3:15 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-14  3:14 [PATCH 0/7] ASoC/soundwire: add fake BPT frame to align Intel DMA buffer size Bard Liao
2025-10-14  3:14 ` [PATCH 1/7] soundwire: cadence_master: make frame index trace more readable Bard Liao
2025-10-14  3:14 ` [PATCH 2/7] soundwire: only compute BPT stream in sdw_compute_dp0_port_params Bard Liao
2025-10-14  3:14 ` Bard Liao [this message]
2025-10-14  3:14 ` [PATCH 4/7] soundwire: cadence: export sdw_cdns_bpt_find_bandwidth Bard Liao
2025-10-14  3:14 ` [PATCH 5/7] ASoC: SOF: Intel: export hda_sdw_bpt_get_buf_size_aligment Bard Liao
2025-10-14  3:14 ` [PATCH 6/7] soundwire: cadence_master: add fake_size parameter to sdw_cdns_prepare_read_dma_buffer Bard Liao
2025-10-14  3:14 ` [PATCH 7/7] soundwire: intel_ace2x: add fake frame to BRA read command Bard Liao
2025-11-12  5:13 ` [PATCH 0/7] ASoC/soundwire: add fake BPT frame to align Intel DMA buffer size Vinod Koul

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