soundwire: generic_bandwidth_allocation: check required freq accurately

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 <[email protected]>
Reviewed-by: Ranjani Sridharan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: bardliao

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;