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Message-Id: <20241104032358.669705-11-yung-chuan.liao@linux.intel.com>
Date: Mon, 4 Nov 2024 03:23:56 +0000
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.dev,
bard.liao@...el.com
Subject: [PATCH 10/12] 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 <yung-chuan.liao@...ux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>
---
drivers/soundwire/generic_bandwidth_allocation.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
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;
--
2.34.1
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