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Soundwire: intel_init: save Slave(s) _ADR info in sdw_intel_ctx

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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>
This commit is contained in:
Bard Liao 2020-07-16 23:09:47 +08:00 committed by Vinod Koul
parent ab2c913297
commit a81844034e
1 changed files with 24 additions and 0 deletions
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24
drivers/soundwire/intel_init.c
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@ -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;