From b3ad31f33982497dbc7a66a9d3013b1ac6985dfe Mon Sep 17 00:00:00 2001 From: Pierre-Louis Bossart Date: Fri, 11 Nov 2022 09:31:28 +0800 Subject: soundwire: intel: start using hw_ops Before introducing new hardware with completely different register spaces and programming sequences, we need to abstract some of the existing routines in hw_ops that will be platform-specific. For now we only use the 'cnl' ops - after the first Intel platform with SoundWire capabilities. Rather than one big intrusive patch, hw_ops are introduced in this patch so show the dependencies between drivers. Follow-up patches will introduce callbacks for debugfs, power and bus management. Signed-off-by: Pierre-Louis Bossart Reviewed-by: Rander Wang Signed-off-by: Bard Liao Link: https://lore.kernel.org/r/20221111013135.38289-2-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul --- include/linux/soundwire/sdw_intel.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include') diff --git a/include/linux/soundwire/sdw_intel.h b/include/linux/soundwire/sdw_intel.h index 2e9fd91572d4..2dbe34b41ef1 100644 --- a/include/linux/soundwire/sdw_intel.h +++ b/include/linux/soundwire/sdw_intel.h @@ -233,6 +233,7 @@ struct sdw_intel_ctx { * struct sdw_intel_res - Soundwire Intel global resource structure, * typically populated by the DSP driver * + * @hw_ops: abstraction for platform ops * @count: link count * @mmio_base: mmio base of SoundWire registers * @irq: interrupt number @@ -249,6 +250,7 @@ struct sdw_intel_ctx { * @alh_base: sdw alh base. */ struct sdw_intel_res { + const struct sdw_intel_hw_ops *hw_ops; int count; void __iomem *mmio_base; int irq; @@ -292,4 +294,17 @@ irqreturn_t sdw_intel_thread(int irq, void *dev_id); #define SDW_INTEL_QUIRK_MASK_BUS_DISABLE BIT(1) +struct sdw_intel; + +/* struct intel_sdw_hw_ops - SoundWire ops for Intel platforms. + * @pre_bank_switch: helper for bus management + * @post_bank_switch: helper for bus management + */ +struct sdw_intel_hw_ops { + int (*pre_bank_switch)(struct sdw_intel *sdw); + int (*post_bank_switch)(struct sdw_intel *sdw); +}; + +extern const struct sdw_intel_hw_ops sdw_intel_cnl_hw_ops; + #endif -- cgit v1.2.3