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(+)
diff --git a/drivers/soundwire/amd_init.c b/drivers/soundwire/amd_init.c index d732ab0bfd59..5c9569d9ad01 100644 --- a/drivers/soundwire/amd_init.c +++ b/drivers/soundwire/amd_init.c @@ -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"); diff --git a/include/linux/soundwire/sdw_amd.h b/include/linux/soundwire/sdw_amd.h index 064174c2f401..47b6cea356ff 100644 --- a/include/linux/soundwire/sdw_amd.h +++ b/include/linux/soundwire/sdw_amd.h @@ -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