@@ -142,6 +142,49 @@ void sdw_amd_exit(struct sdw_amd_ctx *ctx)
}
EXPORT_SYMBOL_NS(sdw_amd_exit, SOUNDWIRE_AMD_INIT);
+int sdw_amd_get_slave_info(struct sdw_amd_ctx *ctx)
+{
+ struct amd_sdw_manager *amd_manager;
+ struct sdw_bus *bus;
+ struct sdw_slave *slave;
+ struct list_head *node;
+ int index;
+ int i = 0;
+ int num_slaves = 0;
+
+ for (index = 0; index < ctx->count; index++) {
+ if (!(ctx->link_mask & BIT(index)))
+ continue;
+ amd_manager = dev_get_drvdata(&ctx->pdev[index]->dev);
+ if (!amd_manager)
+ return -ENODEV;
+ bus = &amd_manager->bus;
+ /* Calculate number of slaves */
+ list_for_each(node, &bus->slaves)
+ num_slaves++;
+ }
+
+ ctx->ids = kcalloc(num_slaves, sizeof(*ctx->ids), GFP_KERNEL);
+ if (!ctx->ids)
+ return -ENOMEM;
+ ctx->num_slaves = num_slaves;
+ for (index = 0; index < ctx->count; index++) {
+ if (!(ctx->link_mask & BIT(index)))
+ continue;
+ amd_manager = dev_get_drvdata(&ctx->pdev[index]->dev);
+ if (amd_manager) {
+ bus = &amd_manager->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 0;
+}
+EXPORT_SYMBOL_NS(sdw_amd_get_slave_info, SOUNDWIRE_AMD_INIT);
+
MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
MODULE_DESCRIPTION("AMD SoundWire Init Library");
MODULE_LICENSE("Dual BSD/GPL");
@@ -170,5 +170,7 @@ int sdw_amd_probe(struct sdw_amd_res *res, struct sdw_amd_ctx **ctx);
void sdw_amd_exit(struct sdw_amd_ctx *ctx);
+int sdw_amd_get_slave_info(struct sdw_amd_ctx *ctx);
+
int amd_sdw_scan_controller(struct sdw_amd_acpi_info *info);
#endif
Implement function to extract slaves information connected on the bus. This information is required during machine select logic. This function will be called from machine select logic code. Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com> --- drivers/soundwire/amd_init.c | 43 +++++++++++++++++++++++++++++++ include/linux/soundwire/sdw_amd.h | 2 ++ 2 files changed, 45 insertions(+)