diff mbox series

[v2,09/14] soundwire: generic_bandwidth_allocation: correct clk_freq check in sdw_select_row_col

Message ID 20241203131813.58454-10-yung-chuan.liao@linux.intel.com (mailing list archive)
State New
Headers show
Series soundwire: add multi-lane support | expand

Commit Message

Bard Liao Dec. 3, 2024, 1:18 p.m. UTC 
The bits in Column 0 of Rows 0 to 47 are for control word and cannot be
used for audio. In practice, entire Column 0 is skipped.

Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
---
 drivers/soundwire/generic_bandwidth_allocation.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/drivers/soundwire/generic_bandwidth_allocation.c b/drivers/soundwire/generic_bandwidth_allocation.c
index d847413141d3..5c4dac36ad1a 100644
--- a/drivers/soundwire/generic_bandwidth_allocation.c
+++ b/drivers/soundwire/generic_bandwidth_allocation.c
@@ -302,7 +302,6 @@  static int sdw_compute_port_params(struct sdw_bus *bus)
 static int sdw_select_row_col(struct sdw_bus *bus, int clk_freq)
 {
 	struct sdw_master_prop *prop = &bus->prop;
-	int frame_int, frame_freq;
 	int r, c;
 
 	for (c = 0; c < SDW_FRAME_COLS; c++) {
@@ -311,11 +310,8 @@  static int sdw_select_row_col(struct sdw_bus *bus, int clk_freq)
 			    sdw_cols[c] != prop->default_col)
 				continue;
 
-			frame_int = sdw_rows[r] * sdw_cols[c];
-			frame_freq = clk_freq / frame_int;
-
-			if ((clk_freq - (frame_freq * SDW_FRAME_CTRL_BITS)) <
-			    bus->params.bandwidth)
+			if (clk_freq * (sdw_cols[c] - 1) <
+			    bus->params.bandwidth * sdw_cols[c])
 				continue;
 
 			bus->params.row = sdw_rows[r];