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[10/12] soundwire: generic_bandwidth_allocation: check required freq accurately

Message ID 20241104032358.669705-11-yung-chuan.liao@linux.intel.com (mailing list archive)
State New
Headers show
Series soundwire: add multi-lane support | expand

Commit Message

Bard Liao Nov. 4, 2024, 3:23 a.m. UTC 
Currently, we check curr_dr_freq roughly by "if (curr_dr_freq <=
bus->params.bandwidth)" in sdw_compute_bus_params() and check it
accurately in sdw_select_row_col(). It works if we only support one
freq. But, we need to check it accurately in sdw_select_row_col() to
give it a chance to use a higher freq or use multi-lane.

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 | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/soundwire/generic_bandwidth_allocation.c b/drivers/soundwire/generic_bandwidth_allocation.c
index 5c4dac36ad1a..d2632af9c8af 100644
--- a/drivers/soundwire/generic_bandwidth_allocation.c
+++ b/drivers/soundwire/generic_bandwidth_allocation.c
@@ -373,7 +373,8 @@  static int sdw_compute_bus_params(struct sdw_bus *bus)
 				(bus->params.max_dr_freq >>  clk_buf[i]) :
 				clk_buf[i] * SDW_DOUBLE_RATE_FACTOR;
 
-		if (curr_dr_freq <= bus->params.bandwidth)
+		if (curr_dr_freq * (mstr_prop->default_col - 1) <
+		    bus->params.bandwidth * mstr_prop->default_col)
 			continue;
 
 		break;