From 92f622bc276a0b9281df3d145ebaffb904f0d290 Mon Sep 17 00:00:00 2001 From: Bard Liao Date: Fri, 10 Jan 2020 16:00:16 -0600 Subject: soundwire: intel: report slave_ids for each link to SOF driver The existing link_mask flag is no longer sufficient to detect the hardware and identify which topology file and a machine driver to load. By reporting the slave_ids exposed in ACPI tables, the parent SOF driver will be able to compare against a set of static configurations. This patch only adds the interface change, the functionality is added in future patches. Signed-off-by: Bard Liao Signed-off-by: Pierre-Louis Bossart Link: https://lore.kernel.org/r/20200110220016.30887-1-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul --- include/linux/soundwire/sdw_intel.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux/soundwire') diff --git a/include/linux/soundwire/sdw_intel.h b/include/linux/soundwire/sdw_intel.h index 93b83bdf8035..979b41b5dcb4 100644 --- a/include/linux/soundwire/sdw_intel.h +++ b/include/linux/soundwire/sdw_intel.h @@ -5,6 +5,7 @@ #define __SDW_INTEL_H #include +#include /** * struct sdw_intel_stream_params_data: configuration passed during @@ -93,6 +94,11 @@ struct sdw_intel_link_res; */ #define SDW_INTEL_CLK_STOP_BUS_RESET BIT(3) +struct sdw_intel_slave_id { + int link_id; + struct sdw_slave_id id; +}; + /** * struct sdw_intel_ctx - context allocated by the controller * driver probe @@ -101,9 +107,12 @@ struct sdw_intel_link_res; * hardware capabilities after all power dependencies are settled. * @link_mask: bit-wise mask listing SoundWire links reported by the * Controller + * @num_slaves: total number of devices exposed across all enabled links * @handle: ACPI parent handle * @links: information for each link (controller-specific and kept * opaque here) + * @ids: array of slave_id, representing Slaves exposed across all enabled + * links * @link_list: list to handle interrupts across all links * @shim_lock: mutex to handle concurrent rmw access to shared SHIM registers. */ @@ -111,8 +120,10 @@ struct sdw_intel_ctx { int count; void __iomem *mmio_base; u32 link_mask; + int num_slaves; acpi_handle handle; struct sdw_intel_link_res *links; + struct sdw_intel_slave_id *ids; struct list_head link_list; struct mutex shim_lock; /* lock for access to shared SHIM registers */ }; -- cgit