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| author |   Vinod Koul <vkoul@kernel.org> | 2020-02-26 14:18:34 +0530 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-02-26 14:18:34 +0530 |
| commit | ed29a0a67267777d78f7505c7044032329e6ee5f (patch) | |
| tree | 3b841946fa7da66de46e3c8587ef0d3c32971e34 /include/linux/soundwire | |
| parent | soundwire: cadence: remove useless prototypes (diff) | |
| parent | soundwire: add helper macros for devID fields (diff) | |
| download | wireguard-linux-ed29a0a67267777d78f7505c7044032329e6ee5f.tar.xz wireguard-linux-ed29a0a67267777d78f7505c7044032329e6ee5f.zip | |
Merge branch 'topic/asoc' into next
Diffstat (limited to 'include/linux/soundwire')
| -rw-r--r-- | include/linux/soundwire/sdw.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h index b8427df034ce..ee349a4c5349 100644 --- a/include/linux/soundwire/sdw.h +++ b/include/linux/soundwire/sdw.h @@ -439,6 +439,29 @@ struct sdw_slave_id { __u8 sdw_version:4; }; +/* + * Helper macros to extract the MIPI-defined IDs + * + * Spec definition + * Register Bit Contents + * DevId_0 [7:4] 47:44 sdw_version + * DevId_0 [3:0] 43:40 unique_id + * DevId_1 39:32 mfg_id [15:8] + * DevId_2 31:24 mfg_id [7:0] + * DevId_3 23:16 part_id [15:8] + * DevId_4 15:08 part_id [7:0] + * DevId_5 07:00 class_id + * + * The MIPI DisCo for SoundWire defines in addition the link_id as bits 51:48 + */ + +#define SDW_DISCO_LINK_ID(adr) (((adr) >> 48) & GENMASK(3, 0)) +#define SDW_VERSION(adr) (((adr) >> 44) & GENMASK(3, 0)) +#define SDW_UNIQUE_ID(adr) (((adr) >> 40) & GENMASK(3, 0)) +#define SDW_MFG_ID(adr) (((adr) >> 24) & GENMASK(15, 0)) +#define SDW_PART_ID(adr) (((adr) >> 8) & GENMASK(15, 0)) +#define SDW_CLASS_ID(adr) ((adr) & GENMASK(7, 0)) + /** * struct sdw_slave_intr_status - Slave interrupt status * @control_port: control port status |