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| author | Bard Liao <yung-chuan.liao@linux.intel.com> | 2020-07-16 23:09:47 +0800 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-07-21 16:05:41 +0530 |
| commit | a81844034e5b382df6cc06bc2943ae24be797afd (patch) | |
| tree | 20b79164601b334e73450f49bebbcf78df420e52 /drivers/soundwire | |
| parent | ab2c913297a1a9a62d6610023ba335b2f6bc8a04 (diff) | |
| download | linux-stable-a81844034e5b382df6cc06bc2943ae24be797afd.tar.gz linux-stable-a81844034e5b382df6cc06bc2943ae24be797afd.tar.bz2 linux-stable-a81844034e5b382df6cc06bc2943ae24be797afd.zip | |
Soundwire: intel_init: save Slave(s) _ADR info in sdw_intel_ctx
Save ACPI information in context so that we can match machine driver
with sdw _ADR matching tables.
Suggested-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200716150947.22119-10-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/soundwire')
| -rw-r--r-- | drivers/soundwire/intel_init.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/soundwire/intel_init.c b/drivers/soundwire/intel_init.c index 8d3992f9fcdd..047252a91c9e 100644 --- a/drivers/soundwire/intel_init.c +++ b/drivers/soundwire/intel_init.c @@ -188,7 +188,11 @@ static struct sdw_intel_ctx struct sdw_intel_link_res *link; struct sdw_intel_ctx *ctx; struct acpi_device *adev; + struct sdw_slave *slave; + struct list_head *node; + struct sdw_bus *bus; u32 link_mask; + int num_slaves = 0; int count; int i; @@ -265,6 +269,26 @@ static struct sdw_intel_ctx link->cdns = platform_get_drvdata(pdev); list_add_tail(&link->list, &ctx->link_list); + bus = &link->cdns->bus; + /* Calculate number of slaves */ + list_for_each(node, &bus->slaves) + num_slaves++; + } + + ctx->ids = devm_kcalloc(&adev->dev, num_slaves, + sizeof(*ctx->ids), GFP_KERNEL); + if (!ctx->ids) + goto err; + + ctx->num_slaves = num_slaves; + i = 0; + list_for_each_entry(link, &ctx->link_list, list) { + bus = &link->cdns->bus; + list_for_each_entry(slave, &bus->slaves, node) { + ctx->ids[i].id = slave->id; + ctx->ids[i].link_id = bus->link_id; + i++; + } } return ctx; |