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From: Bard Liao <yung-chuan.liao@linux.intel.com>
To: broonie@kernel.org, tiwai@suse.de
Cc: vkoul@kernel.org, alsa-devel@alsa-project.org,
	pierre-louis.bossart@linux.intel.com, bard.liao@intel.com
Subject: [PATCH 2/2] soundwire: generic_allocation: fix confusion between group and packing
Date: Tue, 23 Mar 2021 13:07:01 +0800	[thread overview]
Message-ID: <20210323050701.23760-3-yung-chuan.liao@linux.intel.com> (raw)
In-Reply-To: <20210323050701.23760-1-yung-chuan.liao@linux.intel.com>

From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>

The existing code makes no sense, we multiply a channel number by
zero (SDW_BLK_GRP_CNT_1), and the result is used to configure the
block packing mode. Sampling grouping and channel packing are two
separate concepts in SoundWire.

In addition, the bandwidth allocation allocates a vertical slice for
each stream, which makes the use of the PER_CHANNEL packing mode
irrelevant.

Let's use the proper definition for block packing mode (PER_PORT).

This change has no functional impact though since the net result is
the same configuration of the DPN_BlockCtrl3 register, when
implemented.

Reported-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
---
 drivers/soundwire/generic_bandwidth_allocation.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/soundwire/generic_bandwidth_allocation.c b/drivers/soundwire/generic_bandwidth_allocation.c
index 0bdef38c9a30..0d1b8ee02713 100644
--- a/drivers/soundwire/generic_bandwidth_allocation.c
+++ b/drivers/soundwire/generic_bandwidth_allocation.c
@@ -62,7 +62,7 @@ static void sdw_compute_slave_ports(struct sdw_master_runtime *m_rt,
 					      sample_int, port_bo, port_bo >> 8,
 					      t_data->hstart,
 					      t_data->hstop,
-					      (SDW_BLK_GRP_CNT_1 * ch), 0x0);
+					      SDW_BLK_PKG_PER_PORT, 0x0);
 
 			sdw_fill_port_params(&p_rt->port_params,
 					     p_rt->num, bps,
@@ -95,7 +95,7 @@ static void sdw_compute_master_ports(struct sdw_master_runtime *m_rt,
 	struct sdw_bus *bus = m_rt->bus;
 	struct sdw_bus_params *b_params = &bus->params;
 	int sample_int, hstart = 0;
-	unsigned int rate, bps, ch, no_ch;
+	unsigned int rate, bps, ch;
 
 	rate = m_rt->stream->params.rate;
 	bps = m_rt->stream->params.bps;
@@ -110,12 +110,11 @@ static void sdw_compute_master_ports(struct sdw_master_runtime *m_rt,
 	t_data.hstart = hstart;
 
 	list_for_each_entry(p_rt, &m_rt->port_list, port_node) {
-		no_ch = sdw_ch_mask_to_ch(p_rt->ch_mask);
 
 		sdw_fill_xport_params(&p_rt->transport_params, p_rt->num,
 				      false, SDW_BLK_GRP_CNT_1, sample_int,
 				      port_bo, port_bo >> 8, hstart, hstop,
-				      (SDW_BLK_GRP_CNT_1 * no_ch), 0x0);
+				      SDW_BLK_PKG_PER_PORT, 0x0);
 
 		sdw_fill_port_params(&p_rt->port_params,
 				     p_rt->num, bps,
-- 
2.17.1


  parent reply	other threads:[~2021-03-23  5:09 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-23  5:06 [PATCH 0/2] soundwire: configure block packing mode with new Bard Liao
2021-03-23  5:07 ` [PATCH 1/2] soundwire: add definition for DPn BlockPackingMode Bard Liao
2021-03-23  5:07 ` Bard Liao [this message]
2021-03-30  9:06 ` [PATCH 0/2] soundwire: configure block packing mode with new Vinod Koul

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