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path: root/sound/soc/sof/intel/hda-mlink.c
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Diffstat (limited to 'sound/soc/sof/intel/hda-mlink.c')
-rw-r--r--sound/soc/sof/intel/hda-mlink.c214
1 files changed, 180 insertions, 34 deletions
diff --git a/sound/soc/sof/intel/hda-mlink.c b/sound/soc/sof/intel/hda-mlink.c
index b592e687a87a..ce561fe52bd5 100644
--- a/sound/soc/sof/intel/hda-mlink.c
+++ b/sound/soc/sof/intel/hda-mlink.c
@@ -3,7 +3,7 @@
// This file is provided under a dual BSD/GPLv2 license. When using or
// redistributing this file, you may do so under either license.
//
-// Copyright(c) 2022 Intel Corporation. All rights reserved.
+// Copyright(c) 2022 Intel Corporation
//
/*
@@ -16,6 +16,7 @@
#include <linux/bitfield.h>
#include <linux/module.h>
+#include <linux/string_choices.h>
#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_MLINK)
@@ -42,6 +43,7 @@
* @shim_offset: offset to SHIM register base
* @ip_offset: offset to IP register base
* @shim_vs_offset: offset to vendor-specific (VS) SHIM base
+ * @mic_privacy_mask: bitmask of sublinks where mic privacy is applied
*/
struct hdac_ext2_link {
struct hdac_ext_link hext_link;
@@ -65,6 +67,8 @@ struct hdac_ext2_link {
u32 shim_offset;
u32 ip_offset;
u32 shim_vs_offset;
+
+ unsigned long mic_privacy_mask;
};
#define hdac_ext_link_to_ext2(h) container_of(h, struct hdac_ext2_link, hext_link)
@@ -90,6 +94,13 @@ struct hdac_ext2_link {
#define AZX_REG_INTEL_UAOL_IP_OFFSET 0x100
#define AZX_REG_INTEL_UAOL_VS_SHIM_OFFSET 0xC00
+/* Microphone privacy */
+#define AZX_REG_INTEL_VS_SHIM_PVCCS 0x10
+#define AZX_REG_INTEL_VS_SHIM_PVCCS_MDSTSCHGIE BIT(0)
+#define AZX_REG_INTEL_VS_SHIM_PVCCS_MDSTSCHG BIT(8)
+#define AZX_REG_INTEL_VS_SHIM_PVCCS_MDSTS BIT(9)
+#define AZX_REG_INTEL_VS_SHIM_PVCCS_FMDIS BIT(10)
+
/* HDAML section - this part follows sequences in the hardware specification,
* including naming conventions and the use of the hdaml_ prefix.
* The code is intentionally minimal with limited dependencies on frameworks or
@@ -434,7 +445,7 @@ int hda_bus_ml_init(struct hdac_bus *bus)
}
return 0;
}
-EXPORT_SYMBOL_NS(hda_bus_ml_init, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hda_bus_ml_init, "SND_SOC_SOF_HDA_MLINK");
void hda_bus_ml_free(struct hdac_bus *bus)
{
@@ -452,7 +463,7 @@ void hda_bus_ml_free(struct hdac_bus *bus)
kfree(h2link);
}
}
-EXPORT_SYMBOL_NS(hda_bus_ml_free, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hda_bus_ml_free, "SND_SOC_SOF_HDA_MLINK");
static struct hdac_ext2_link *
find_ext2_link(struct hdac_bus *bus, bool alt, int elid)
@@ -479,7 +490,25 @@ int hdac_bus_eml_get_count(struct hdac_bus *bus, bool alt, int elid)
return h2link->slcount;
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_get_count, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_get_count, "SND_SOC_SOF_HDA_MLINK");
+
+void hdac_bus_eml_enable_interrupt_unlocked(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;
+
+ hdaml_link_enable_interrupt(hlink->ml_addr + AZX_REG_ML_LCTL, enable);
+}
+EXPORT_SYMBOL_NS(hdac_bus_eml_enable_interrupt_unlocked, "SND_SOC_SOF_HDA_MLINK");
void hdac_bus_eml_enable_interrupt(struct hdac_bus *bus, bool alt, int elid, bool enable)
{
@@ -501,7 +530,7 @@ void hdac_bus_eml_enable_interrupt(struct hdac_bus *bus, bool alt, int elid, boo
mutex_unlock(&h2link->eml_lock);
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_enable_interrupt, SND_SOC_SOF_HDA_MLINK);
+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)
{
@@ -519,7 +548,7 @@ bool hdac_bus_eml_check_interrupt(struct hdac_bus *bus, bool alt, int elid)
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);
+EXPORT_SYMBOL_NS(hdac_bus_eml_check_interrupt, "SND_SOC_SOF_HDA_MLINK");
int hdac_bus_eml_set_syncprd_unlocked(struct hdac_bus *bus, bool alt, int elid, u32 syncprd)
{
@@ -539,13 +568,13 @@ int hdac_bus_eml_set_syncprd_unlocked(struct hdac_bus *bus, bool alt, int elid,
return 0;
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_set_syncprd_unlocked, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_set_syncprd_unlocked, "SND_SOC_SOF_HDA_MLINK");
int hdac_bus_eml_sdw_set_syncprd_unlocked(struct hdac_bus *bus, u32 syncprd)
{
return hdac_bus_eml_set_syncprd_unlocked(bus, true, AZX_REG_ML_LEPTR_ID_SDW, syncprd);
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_set_syncprd_unlocked, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_set_syncprd_unlocked, "SND_SOC_SOF_HDA_MLINK");
int hdac_bus_eml_wait_syncpu_unlocked(struct hdac_bus *bus, bool alt, int elid)
{
@@ -563,13 +592,13 @@ int hdac_bus_eml_wait_syncpu_unlocked(struct hdac_bus *bus, bool alt, int elid)
return hdaml_link_wait_syncpu(hlink->ml_addr + AZX_REG_ML_LSYNC);
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_wait_syncpu_unlocked, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_wait_syncpu_unlocked, "SND_SOC_SOF_HDA_MLINK");
int hdac_bus_eml_sdw_wait_syncpu_unlocked(struct hdac_bus *bus)
{
return hdac_bus_eml_wait_syncpu_unlocked(bus, true, AZX_REG_ML_LEPTR_ID_SDW);
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_wait_syncpu_unlocked, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_wait_syncpu_unlocked, "SND_SOC_SOF_HDA_MLINK");
void hdac_bus_eml_sync_arm_unlocked(struct hdac_bus *bus, bool alt, int elid, int sublink)
{
@@ -587,13 +616,13 @@ void hdac_bus_eml_sync_arm_unlocked(struct hdac_bus *bus, bool alt, int elid, in
hdaml_link_sync_arm(hlink->ml_addr + AZX_REG_ML_LSYNC, sublink);
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_sync_arm_unlocked, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_sync_arm_unlocked, "SND_SOC_SOF_HDA_MLINK");
void hdac_bus_eml_sdw_sync_arm_unlocked(struct hdac_bus *bus, int sublink)
{
hdac_bus_eml_sync_arm_unlocked(bus, true, AZX_REG_ML_LEPTR_ID_SDW, sublink);
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_sync_arm_unlocked, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_sync_arm_unlocked, "SND_SOC_SOF_HDA_MLINK");
int hdac_bus_eml_sync_go_unlocked(struct hdac_bus *bus, bool alt, int elid)
{
@@ -613,13 +642,13 @@ int hdac_bus_eml_sync_go_unlocked(struct hdac_bus *bus, bool alt, int elid)
return 0;
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_sync_go_unlocked, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_sync_go_unlocked, "SND_SOC_SOF_HDA_MLINK");
int hdac_bus_eml_sdw_sync_go_unlocked(struct hdac_bus *bus)
{
return hdac_bus_eml_sync_go_unlocked(bus, true, AZX_REG_ML_LEPTR_ID_SDW);
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_sync_go_unlocked, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_sync_go_unlocked, "SND_SOC_SOF_HDA_MLINK");
bool hdac_bus_eml_check_cmdsync_unlocked(struct hdac_bus *bus, bool alt, int elid)
{
@@ -642,13 +671,13 @@ bool hdac_bus_eml_check_cmdsync_unlocked(struct hdac_bus *bus, bool alt, int eli
return hdaml_link_check_cmdsync(hlink->ml_addr + AZX_REG_ML_LSYNC,
cmdsync_mask);
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_check_cmdsync_unlocked, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_check_cmdsync_unlocked, "SND_SOC_SOF_HDA_MLINK");
bool hdac_bus_eml_sdw_check_cmdsync_unlocked(struct hdac_bus *bus)
{
return hdac_bus_eml_check_cmdsync_unlocked(bus, true, AZX_REG_ML_LEPTR_ID_SDW);
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_check_cmdsync_unlocked, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_check_cmdsync_unlocked, "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)
@@ -678,6 +707,20 @@ static int hdac_bus_eml_power_up_base(struct hdac_bus *bus, bool alt, int elid,
}
ret = hdaml_link_init(hlink->ml_addr + AZX_REG_ML_LCTL, sublink);
+ if ((h2link->mic_privacy_mask & BIT(sublink)) && !ret) {
+ u16 __iomem *pvccs = h2link->base_ptr +
+ h2link->shim_vs_offset +
+ sublink * h2link->instance_offset +
+ AZX_REG_INTEL_VS_SHIM_PVCCS;
+ u16 val = readw(pvccs);
+
+ writew(val | AZX_REG_INTEL_VS_SHIM_PVCCS_MDSTSCHGIE, pvccs);
+
+ if (val & AZX_REG_INTEL_VS_SHIM_PVCCS_MDSTS)
+ dev_dbg(bus->dev,
+ "sublink %d (%d:%d): Mic privacy is enabled\n",
+ sublink, alt, elid);
+ }
skip_init:
if (eml_lock)
@@ -690,13 +733,13 @@ int hdac_bus_eml_power_up(struct hdac_bus *bus, bool alt, int elid, int sublink)
{
return hdac_bus_eml_power_up_base(bus, alt, elid, sublink, true);
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_power_up, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_power_up, "SND_SOC_SOF_HDA_MLINK");
int hdac_bus_eml_power_up_unlocked(struct hdac_bus *bus, bool alt, int elid, int sublink)
{
return hdac_bus_eml_power_up_base(bus, alt, elid, sublink, false);
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_power_up_unlocked, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_power_up_unlocked, "SND_SOC_SOF_HDA_MLINK");
static int hdac_bus_eml_power_down_base(struct hdac_bus *bus, bool alt, int elid, int sublink,
bool eml_lock)
@@ -724,6 +767,16 @@ static int hdac_bus_eml_power_down_base(struct hdac_bus *bus, bool alt, int elid
if (--h2link->sublink_ref_count[sublink] > 0)
goto skip_shutdown;
}
+
+ if (h2link->mic_privacy_mask & BIT(sublink)) {
+ u16 __iomem *pvccs = h2link->base_ptr +
+ h2link->shim_vs_offset +
+ sublink * h2link->instance_offset +
+ AZX_REG_INTEL_VS_SHIM_PVCCS;
+
+ writew(readw(pvccs) & ~AZX_REG_INTEL_VS_SHIM_PVCCS_MDSTSCHGIE, pvccs);
+ }
+
ret = hdaml_link_shutdown(hlink->ml_addr + AZX_REG_ML_LCTL, sublink);
skip_shutdown:
@@ -737,25 +790,25 @@ int hdac_bus_eml_power_down(struct hdac_bus *bus, bool alt, int elid, int sublin
{
return hdac_bus_eml_power_down_base(bus, alt, elid, sublink, true);
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_power_down, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_power_down, "SND_SOC_SOF_HDA_MLINK");
int hdac_bus_eml_power_down_unlocked(struct hdac_bus *bus, bool alt, int elid, int sublink)
{
return hdac_bus_eml_power_down_base(bus, alt, elid, sublink, false);
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_power_down_unlocked, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_power_down_unlocked, "SND_SOC_SOF_HDA_MLINK");
int hdac_bus_eml_sdw_power_up_unlocked(struct hdac_bus *bus, int sublink)
{
return hdac_bus_eml_power_up_unlocked(bus, true, AZX_REG_ML_LEPTR_ID_SDW, sublink);
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_power_up_unlocked, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_power_up_unlocked, "SND_SOC_SOF_HDA_MLINK");
int hdac_bus_eml_sdw_power_down_unlocked(struct hdac_bus *bus, int sublink)
{
return hdac_bus_eml_power_down_unlocked(bus, true, AZX_REG_ML_LEPTR_ID_SDW, sublink);
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_power_down_unlocked, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_power_down_unlocked, "SND_SOC_SOF_HDA_MLINK");
int hdac_bus_eml_sdw_get_lsdiid_unlocked(struct hdac_bus *bus, int sublink, u16 *lsdiid)
{
@@ -771,7 +824,7 @@ int hdac_bus_eml_sdw_get_lsdiid_unlocked(struct hdac_bus *bus, int sublink, u16
*lsdiid = hdaml_link_get_lsdiid(hlink->ml_addr + AZX_REG_ML_LSDIID_OFFSET(sublink));
return 0;
-} EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_get_lsdiid_unlocked, SND_SOC_SOF_HDA_MLINK);
+} EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_get_lsdiid_unlocked, "SND_SOC_SOF_HDA_MLINK");
int hdac_bus_eml_sdw_set_lsdiid(struct hdac_bus *bus, int sublink, int dev_num)
{
@@ -791,7 +844,7 @@ int hdac_bus_eml_sdw_set_lsdiid(struct hdac_bus *bus, int sublink, int dev_num)
mutex_unlock(&h2link->eml_lock);
return 0;
-} EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_set_lsdiid, SND_SOC_SOF_HDA_MLINK);
+} EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_set_lsdiid, "SND_SOC_SOF_HDA_MLINK");
/*
* the 'y' parameter comes from the PCMSyCM hardware register naming. 'y' refers to the
@@ -835,7 +888,7 @@ int hdac_bus_eml_sdw_map_stream_ch(struct hdac_bus *bus, int sublink, int y,
sublink, channel_mask, stream_id, dir, val);
return 0;
-} EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_map_stream_ch, SND_SOC_SOF_HDA_MLINK);
+} EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_map_stream_ch, "SND_SOC_SOF_HDA_MLINK");
void hda_bus_ml_put_all(struct hdac_bus *bus)
{
@@ -848,7 +901,7 @@ void hda_bus_ml_put_all(struct hdac_bus *bus)
snd_hdac_ext_bus_link_put(bus, hlink);
}
}
-EXPORT_SYMBOL_NS(hda_bus_ml_put_all, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hda_bus_ml_put_all, "SND_SOC_SOF_HDA_MLINK");
void hda_bus_ml_reset_losidv(struct hdac_bus *bus)
{
@@ -858,7 +911,7 @@ void hda_bus_ml_reset_losidv(struct hdac_bus *bus)
list_for_each_entry(hlink, &bus->hlink_list, list)
writel(0, hlink->ml_addr + AZX_REG_ML_LOSIDV);
}
-EXPORT_SYMBOL_NS(hda_bus_ml_reset_losidv, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hda_bus_ml_reset_losidv, "SND_SOC_SOF_HDA_MLINK");
int hda_bus_ml_resume(struct hdac_bus *bus)
{
@@ -877,7 +930,7 @@ int hda_bus_ml_resume(struct hdac_bus *bus)
}
return 0;
}
-EXPORT_SYMBOL_NS(hda_bus_ml_resume, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hda_bus_ml_resume, "SND_SOC_SOF_HDA_MLINK");
int hda_bus_ml_suspend(struct hdac_bus *bus)
{
@@ -895,7 +948,7 @@ int hda_bus_ml_suspend(struct hdac_bus *bus)
}
return 0;
}
-EXPORT_SYMBOL_NS(hda_bus_ml_suspend, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hda_bus_ml_suspend, "SND_SOC_SOF_HDA_MLINK");
struct mutex *hdac_bus_eml_get_mutex(struct hdac_bus *bus, bool alt, int elid)
{
@@ -907,7 +960,7 @@ struct mutex *hdac_bus_eml_get_mutex(struct hdac_bus *bus, bool alt, int elid)
return &h2link->eml_lock;
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_get_mutex, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_get_mutex, "SND_SOC_SOF_HDA_MLINK");
struct hdac_ext_link *hdac_bus_eml_ssp_get_hlink(struct hdac_bus *bus)
{
@@ -919,7 +972,7 @@ struct hdac_ext_link *hdac_bus_eml_ssp_get_hlink(struct hdac_bus *bus)
return &h2link->hext_link;
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_ssp_get_hlink, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_ssp_get_hlink, "SND_SOC_SOF_HDA_MLINK");
struct hdac_ext_link *hdac_bus_eml_dmic_get_hlink(struct hdac_bus *bus)
{
@@ -931,7 +984,7 @@ struct hdac_ext_link *hdac_bus_eml_dmic_get_hlink(struct hdac_bus *bus)
return &h2link->hext_link;
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_dmic_get_hlink, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_dmic_get_hlink, "SND_SOC_SOF_HDA_MLINK");
struct hdac_ext_link *hdac_bus_eml_sdw_get_hlink(struct hdac_bus *bus)
{
@@ -943,7 +996,7 @@ struct hdac_ext_link *hdac_bus_eml_sdw_get_hlink(struct hdac_bus *bus)
return &h2link->hext_link;
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_get_hlink, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_get_hlink, "SND_SOC_SOF_HDA_MLINK");
int hdac_bus_eml_enable_offload(struct hdac_bus *bus, bool alt, int elid, bool enable)
{
@@ -967,8 +1020,101 @@ int hdac_bus_eml_enable_offload(struct hdac_bus *bus, bool alt, int elid, bool e
return 0;
}
-EXPORT_SYMBOL_NS(hdac_bus_eml_enable_offload, SND_SOC_SOF_HDA_MLINK);
+EXPORT_SYMBOL_NS(hdac_bus_eml_enable_offload, "SND_SOC_SOF_HDA_MLINK");
+
+void hdac_bus_eml_set_mic_privacy_mask(struct hdac_bus *bus, bool alt, int elid,
+ unsigned long mask)
+{
+ struct hdac_ext2_link *h2link;
+
+ if (!mask)
+ return;
+
+ h2link = find_ext2_link(bus, alt, elid);
+ if (!h2link)
+ return;
+
+ if (__fls(mask) > h2link->slcount) {
+ dev_warn(bus->dev,
+ "%s: invalid sublink mask for %d:%d, slcount %d: %#lx\n",
+ __func__, alt, elid, h2link->slcount, mask);
+ return;
+ }
+
+ dev_dbg(bus->dev, "sublink mask for %d:%d, slcount %d: %#lx\n", alt,
+ elid, h2link->slcount, mask);
+
+ h2link->mic_privacy_mask = mask;
+}
+EXPORT_SYMBOL_NS(hdac_bus_eml_set_mic_privacy_mask, "SND_SOC_SOF_HDA_MLINK");
+
+bool hdac_bus_eml_is_mic_privacy_changed(struct hdac_bus *bus, bool alt, int elid)
+{
+ struct hdac_ext2_link *h2link;
+ bool changed = false;
+ u16 __iomem *pvccs;
+ int i;
+
+ h2link = find_ext2_link(bus, alt, elid);
+ if (!h2link)
+ return false;
+
+ /* The change in privacy state needs to be acked for each link */
+ for_each_set_bit(i, &h2link->mic_privacy_mask, h2link->slcount) {
+ u16 val;
+
+ if (h2link->sublink_ref_count[i] == 0)
+ continue;
+
+ pvccs = h2link->base_ptr +
+ h2link->shim_vs_offset +
+ i * h2link->instance_offset +
+ AZX_REG_INTEL_VS_SHIM_PVCCS;
+
+ val = readw(pvccs);
+ if (val & AZX_REG_INTEL_VS_SHIM_PVCCS_MDSTSCHG) {
+ writew(val, pvccs);
+ changed = true;
+ }
+ }
+
+ return changed;
+}
+EXPORT_SYMBOL_NS(hdac_bus_eml_is_mic_privacy_changed, "SND_SOC_SOF_HDA_MLINK");
+
+bool hdac_bus_eml_get_mic_privacy_state(struct hdac_bus *bus, bool alt, int elid)
+{
+ struct hdac_ext2_link *h2link;
+ u16 __iomem *pvccs;
+ bool state;
+ int i;
+
+ h2link = find_ext2_link(bus, alt, elid);
+ if (!h2link)
+ return false;
+
+ for_each_set_bit(i, &h2link->mic_privacy_mask, h2link->slcount) {
+ if (h2link->sublink_ref_count[i] == 0)
+ continue;
+
+ /* Return the privacy state from the first active link */
+ pvccs = h2link->base_ptr +
+ h2link->shim_vs_offset +
+ i * h2link->instance_offset +
+ AZX_REG_INTEL_VS_SHIM_PVCCS;
+
+ state = readw(pvccs) & AZX_REG_INTEL_VS_SHIM_PVCCS_MDSTS;
+ dev_dbg(bus->dev, "alt: %d, elid: %d: Mic privacy is %s\n", alt,
+ elid, str_enabled_disabled(state));
+
+ return state;
+ }
+
+ return false;
+}
+EXPORT_SYMBOL_NS(hdac_bus_eml_get_mic_privacy_state, "SND_SOC_SOF_HDA_MLINK");
#endif
MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DESCRIPTION("SOF support for HDaudio multi-link");
generated by cgit (git 2.34.1) at 2025-07-23 22:04:29 +0000