From: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com
Select relevant ip-offset depending on hardware version. This offset is used to access MCP_ or IP_MCP_ registers with a fixed offset.
For existing platforms, the offset is exactly zero. Starting with LunarLake, the offset is 0x4000.
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Reviewed-by: Rander Wang rander.wang@intel.com Reviewed-by: Péter Ujfalusi peter.ujfalusi@linux.intel.com Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com Signed-off-by: Bard Liao yung-chuan.liao@linux.intel.com --- drivers/soundwire/cadence_master.h | 2 ++ drivers/soundwire/intel.h | 2 ++ drivers/soundwire/intel_auxdevice.c | 1 + drivers/soundwire/intel_init.c | 2 ++ 4 files changed, 7 insertions(+)
diff --git a/drivers/soundwire/cadence_master.h b/drivers/soundwire/cadence_master.h index b653734085d9..b0f0bf90640b 100644 --- a/drivers/soundwire/cadence_master.h +++ b/drivers/soundwire/cadence_master.h @@ -14,6 +14,8 @@ */ #define CDNS_MCP_IP_MAX_CMD_LEN 32
+#define SDW_CADENCE_MCP_IP_OFFSET 0x4000 + /** * struct sdw_cdns_pdi: PDI (Physical Data Interface) instance * diff --git a/drivers/soundwire/intel.h b/drivers/soundwire/intel.h index 51aa42a5a824..1b23292bb8be 100644 --- a/drivers/soundwire/intel.h +++ b/drivers/soundwire/intel.h @@ -10,6 +10,7 @@ * @hw_ops: platform-specific ops * @mmio_base: mmio base of SoundWire registers * @registers: Link IO registers base + * @ip_offset: offset for MCP_IP registers * @shim: Audio shim pointer * @shim_vs: Audio vendor-specific shim pointer * @alh: ALH (Audio Link Hub) pointer @@ -28,6 +29,7 @@ struct sdw_intel_link_res {
void __iomem *mmio_base; /* not strictly needed, useful for debug */ void __iomem *registers; + u32 ip_offset; void __iomem *shim; void __iomem *shim_vs; void __iomem *alh; diff --git a/drivers/soundwire/intel_auxdevice.c b/drivers/soundwire/intel_auxdevice.c index 5021be0f4158..b02cef4f4b66 100644 --- a/drivers/soundwire/intel_auxdevice.c +++ b/drivers/soundwire/intel_auxdevice.c @@ -144,6 +144,7 @@ static int intel_link_probe(struct auxiliary_device *auxdev, sdw->link_res = &ldev->link_res; cdns->dev = dev; cdns->registers = sdw->link_res->registers; + cdns->ip_offset = sdw->link_res->ip_offset; cdns->instance = sdw->instance; cdns->msg_count = 0;
diff --git a/drivers/soundwire/intel_init.c b/drivers/soundwire/intel_init.c index e0023af9e0e1..43d339c6bcee 100644 --- a/drivers/soundwire/intel_init.c +++ b/drivers/soundwire/intel_init.c @@ -66,10 +66,12 @@ static struct sdw_intel_link_dev *intel_link_dev_register(struct sdw_intel_res * if (!res->ext) { link->registers = res->mmio_base + SDW_LINK_BASE + (SDW_LINK_SIZE * link_id); + link->ip_offset = 0; link->shim = res->mmio_base + res->shim_base; link->alh = res->mmio_base + res->alh_base; } else { link->registers = res->mmio_base + SDW_IP_BASE(link_id); + link->ip_offset = SDW_CADENCE_MCP_IP_OFFSET; link->shim = res->mmio_base + SDW_SHIM2_GENERIC_BASE(link_id); link->shim_vs = res->mmio_base + SDW_SHIM2_VS_BASE(link_id); }