linux-kernel - [PATCH] soundwire: generic_bandwidth_allocation: change port

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Date: Mon, 17 Jun 2024 20:13:50 +0800
From: Bard Liao <yung-chuan.liao@...ux.intel.com>
To: linux-sound@...r.kernel.org,
	vkoul@...nel.org
Cc: vinod.koul@...aro.org,
	linux-kernel@...r.kernel.org,
	pierre-louis.bossart@...ux.intel.com,
	bard.liao@...el.com
Subject: [PATCH] soundwire: generic_bandwidth_allocation: change port_bo parameter to pointer

Currently, we do port_bo += bps * ch in both inside and outside
sdw_compute_master_ports(). We can pass port_bo as a pointer and only
calculate port_bo in sdw_compute_master_ports().
Besides, different port could use different lanes and we can't just
add port_bo based on total channels in a manager.

Signed-off-by: Bard Liao <yung-chuan.liao@...ux.intel.com>
---
 drivers/soundwire/generic_bandwidth_allocation.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/soundwire/generic_bandwidth_allocation.c b/drivers/soundwire/generic_bandwidth_allocation.c
index c70a63d009ae..b9316207c3ab 100644
--- a/drivers/soundwire/generic_bandwidth_allocation.c
+++ b/drivers/soundwire/generic_bandwidth_allocation.c
@@ -83,7 +83,7 @@ EXPORT_SYMBOL(sdw_compute_slave_ports);
 
 static void sdw_compute_master_ports(struct sdw_master_runtime *m_rt,
 				     struct sdw_group_params *params,
-				     int port_bo, int hstop)
+				     int *port_bo, int hstop)
 {
 	struct sdw_transport_data t_data = {0};
 	struct sdw_port_runtime *p_rt;
@@ -108,7 +108,7 @@ static void sdw_compute_master_ports(struct sdw_master_runtime *m_rt,
 
 		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,
+				      *port_bo, (*port_bo) >> 8, hstart, hstop,
 				      SDW_BLK_PKG_PER_PORT, 0x0);
 
 		sdw_fill_port_params(&p_rt->port_params,
@@ -120,15 +120,15 @@ static void sdw_compute_master_ports(struct sdw_master_runtime *m_rt,
 		if (!(p_rt == list_first_entry(&m_rt->port_list,
 					       struct sdw_port_runtime,
 					       port_node))) {
-			port_bo += bps * ch;
+			(*port_bo) += bps * ch;
 			continue;
 		}
 
 		t_data.hstart = hstart;
 		t_data.hstop = hstop;
-		t_data.block_offset = port_bo;
+		t_data.block_offset = *port_bo;
 		t_data.sub_block_offset = 0;
-		port_bo += bps * ch;
+		(*port_bo) += bps * ch;
 	}
 
 	sdw_compute_slave_ports(m_rt, &t_data);
@@ -146,9 +146,7 @@ static void _sdw_compute_port_params(struct sdw_bus *bus,
 		port_bo = 1;
 
 		list_for_each_entry(m_rt, &bus->m_rt_list, bus_node) {
-			sdw_compute_master_ports(m_rt, &params[i], port_bo, hstop);
-
-			port_bo += m_rt->ch_count * m_rt->stream->params.bps;
+			sdw_compute_master_ports(m_rt, &params[i], &port_bo, hstop);
 		}
 
 		hstop = hstop - params[i].hwidth;
-- 
2.40.1