Unverified Commit 82958c40 authored by Pierre-Louis Bossart's avatar Pierre-Louis Bossart Committed by Mark Brown
Browse files

ASoC: SOF: Intel: hda-mlink: add helper to offload link ownership 



For DMIC and SSP, the DSP will be responsible for programming the
blobs and link registers.

Signed-off-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: default avatarRander Wang <rander.wang@intel.com>
Reviewed-by: default avatarPéter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: default avatarRanjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: default avatarTakashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20230404104127.5629-18-peter.ujfalusi@linux.intel.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 2b864e96

include/sound/hda-mlink.h

+7 −0
Original line number Diff line number Diff line
@@ -52,6 +52,8 @@ int hda_bus_ml_suspend(struct hdac_bus *bus); 
struct hdac_ext_link *hdac_bus_eml_ssp_get_hlink(struct hdac_bus *bus);

struct hdac_ext_link *hdac_bus_eml_dmic_get_hlink(struct hdac_bus *bus);



int hdac_bus_eml_enable_offload(struct hdac_bus *bus, bool alt, int elid, bool enable);



#else



static inline int
@@ -151,4 +153,9 @@ hdac_bus_eml_ssp_get_hlink(struct hdac_bus *bus) { return NULL; } 
static inline struct hdac_ext_link *

hdac_bus_eml_dmic_get_hlink(struct hdac_bus *bus) { return NULL; }



static inline int

hdac_bus_eml_enable_offload(struct hdac_bus *bus, bool alt, int elid, bool enable)

{

	return 0;

}

#endif /* CONFIG_SND_SOC_SOF_HDA */

sound/soc/sof/intel/hda-mlink.c

+36 −0
Original line number Diff line number Diff line
@@ -333,6 +333,18 @@ static void hdaml_link_set_lsdiid(u32 __iomem *lsdiid, int dev_num) 
	writel(val, lsdiid);

}



static void hdaml_lctl_offload_enable(u32 __iomem *lctl, bool enable)

{

	u32 val = readl(lctl);



	if (enable)

		val |=  AZX_ML_LCTL_OFLEN;

	else

		val &=  ~AZX_ML_LCTL_OFLEN;



	writel(val, lctl);

}



/* END HDAML section */



static int hda_ml_alloc_h2link(struct hdac_bus *bus, int index)
@@ -812,6 +824,30 @@ struct hdac_ext_link *hdac_bus_eml_dmic_get_hlink(struct hdac_bus *bus) 
}

EXPORT_SYMBOL_NS(hdac_bus_eml_dmic_get_hlink, SND_SOC_SOF_HDA_MLINK);



int hdac_bus_eml_enable_offload(struct hdac_bus *bus, bool alt, int elid, bool enable)

{

	struct hdac_ext2_link *h2link;

	struct hdac_ext_link *hlink;



	h2link = find_ext2_link(bus, alt, elid);

	if (!h2link)

		return -ENODEV;



	if (!h2link->ofls)

		return 0;



	hlink = &h2link->hext_link;



	mutex_lock(&h2link->eml_lock);



	hdaml_lctl_offload_enable(hlink->ml_addr + AZX_REG_ML_LCTL, enable);



	mutex_unlock(&h2link->eml_lock);



	return 0;

}

EXPORT_SYMBOL_NS(hdac_bus_eml_enable_offload, SND_SOC_SOF_HDA_MLINK);



#endif



MODULE_LICENSE("Dual BSD/GPL");