Unverified Commit 2e428831 authored by Pierre-Louis Bossart's avatar Pierre-Louis Bossart Committed by Mark Brown
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ASoC: SOF: Intel: hda-mlink: add helpers to enable/check interrupts 



When INTC is set, LCTL exposes INTEN and INTSTS fields.

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/20230404104127.5629-12-peter.ujfalusi@linux.intel.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 6857c7ee

include/sound/hda-mlink.h

+8 −0
Original line number Diff line number Diff line
@@ -14,6 +14,8 @@ int hda_bus_ml_init(struct hdac_bus *bus); 
void hda_bus_ml_free(struct hdac_bus *bus);



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

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

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



int hdac_bus_eml_power_up(struct hdac_bus *bus, bool alt, int elid, int sublink);

int hdac_bus_eml_power_up_unlocked(struct hdac_bus *bus, bool alt, int elid, int sublink);
@@ -39,6 +41,12 @@ static inline void hda_bus_ml_free(struct hdac_bus *bus) { } 
static inline int

hdac_bus_eml_get_count(struct hdac_bus *bus, bool alt, int elid) { return 0; }



static inline void

hdac_bus_eml_enable_interrupt(struct hdac_bus *bus, bool alt, int elid, bool enable) { }



static inline bool

hdac_bus_eml_check_interrupt(struct hdac_bus *bus, bool alt, int elid) { return false; }



static inline int

hdac_bus_eml_power_up(struct hdac_bus *bus, bool alt, int elid, int sublink)

{

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

+62 −0
Original line number Diff line number Diff line
@@ -232,6 +232,28 @@ static int hdaml_link_shutdown(u32 __iomem *lctl, int sublink) 
	return check_sublink_power(lctl, sublink, false);

}



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

{

	u32 val;



	val = readl(lctl);

	if (enable)

		val |= AZX_ML_LCTL_INTEN;

	else

		val &= ~AZX_ML_LCTL_INTEN;



	writel(val, lctl);

}



static bool hdaml_link_check_interrupt(u32 __iomem *lctl)

{

	u32 val;



	val = readl(lctl);



	return val & AZX_ML_LCTL_INTSTS;

}



/* END HDAML section */



static int hda_ml_alloc_h2link(struct hdac_bus *bus, int index)
@@ -340,6 +362,46 @@ int hdac_bus_eml_get_count(struct hdac_bus *bus, bool alt, int elid) 
}

EXPORT_SYMBOL_NS(hdac_bus_eml_get_count, SND_SOC_SOF_HDA_MLINK);



void hdac_bus_eml_enable_interrupt(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;



	if (!h2link->intc)

		return;



	hlink = &h2link->hext_link;



	mutex_lock(&h2link->eml_lock);



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



	mutex_unlock(&h2link->eml_lock);

}

EXPORT_SYMBOL_NS(hdac_bus_eml_enable_interrupt, SND_SOC_SOF_HDA_MLINK);



bool hdac_bus_eml_check_interrupt(struct hdac_bus *bus, bool alt, int elid)

{

	struct hdac_ext2_link *h2link;

	struct hdac_ext_link *hlink;



	h2link = find_ext2_link(bus, alt, elid);

	if (!h2link)

		return false;



	if (!h2link->intc)

		return false;



	hlink = &h2link->hext_link;



	return hdaml_link_check_interrupt(hlink->ml_addr + AZX_REG_ML_LCTL);

}

EXPORT_SYMBOL_NS(hdac_bus_eml_check_interrupt, SND_SOC_SOF_HDA_MLINK);



static int hdac_bus_eml_power_up_base(struct hdac_bus *bus, bool alt, int elid, int sublink,

				      bool eml_lock)

{