From: Bard Liao <yung-chuan.liao@linux.intel.com>
To: alsa-devel@alsa-project.org, vkoul@kernel.org
Cc: vinod.koul@linaro.org, linux-kernel@vger.kernel.org,
tiwai@suse.de, broonie@kernel.org, gregkh@linuxfoundation.org,
jank@cadence.com, srinivas.kandagatla@linaro.org,
rander.wang@linux.intel.com, ranjani.sridharan@linux.intel.com,
hui.wang@canonical.com, pierre-louis.bossart@linux.intel.com,
sanyog.r.kale@intel.com, mengdong.lin@intel.com,
bard.liao@intel.com
Subject: [PATCH v2 06/10] soundwire: intel: add multi-link hw_synchronization information
Date: Tue, 1 Sep 2020 23:05:52 +0800 [thread overview]
Message-ID: <20200901150556.19432-7-yung-chuan.liao@linux.intel.com> (raw)
In-Reply-To: <20200901150556.19432-1-yung-chuan.liao@linux.intel.com>
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
set the flags as required by hardware implementation
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
---
drivers/soundwire/intel.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index 8634d33c388c..272826973426 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -1400,7 +1400,14 @@ int intel_master_startup(struct platform_device *pdev)
dev_dbg(dev, "Multi-link is disabled\n");
bus->multi_link = false;
} else {
+ /*
+ * hardware-based synchronization is required regardless
+ * of the number of segments used by a stream: SSP-based
+ * synchronization is gated by gsync when the multi-master
+ * mode is set.
+ */
bus->multi_link = true;
+ bus->hw_sync_min_links = 1;
}
/* Initialize shim, controller */
--
2.17.1
next prev parent reply other threads:[~2020-09-02 3:00 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-01 15:05 [PATCH v2 00/10] soundwire: intel: add multi-link support Bard Liao
2020-09-01 15:05 ` [PATCH v2 01/10] soundwire: intel: disable shim wake on suspend Bard Liao
2020-09-01 15:05 ` [PATCH v2 02/10] soundwire: intel: ignore software command retries Bard Liao
2020-09-01 15:05 ` [PATCH v2 03/10] soundwire: intel: add multi-link support Bard Liao
2020-09-01 15:05 ` [PATCH v2 04/10] soundwire: intel: add missing support for all clock stop modes Bard Liao
2020-09-01 15:05 ` [PATCH v2 05/10] soundwire: bus: update multi-link definition with hw sync details Bard Liao
2020-09-01 15:05 ` Bard Liao [this message]
2020-09-01 15:05 ` [PATCH v2 07/10] soundwire: stream: enable hw_sync as needed by hardware Bard Liao
2020-09-01 15:05 ` [PATCH v2 08/10] soundwire: intel: add error log for clock-stop invalid configs Bard Liao
2020-09-01 15:05 ` [PATCH v2 09/10] soundwire: intel: pass link_mask information to each master Bard Liao
2020-09-01 15:05 ` [PATCH v2 10/10] soundwire: intel: don't manage link power individually Bard Liao
2020-09-03 10:44 ` [PATCH v2 00/10] soundwire: intel: add multi-link support Vinod Koul
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