diff options
| -rw-r--r-- | include/sound/hda-mlink.h | 27 | ||||
| -rw-r--r-- | sound/soc/sof/intel/hda-mlink.c | 90 |
2 files changed, 117 insertions, 0 deletions
diff --git a/include/sound/hda-mlink.h b/include/sound/hda-mlink.h index 872652209a47..80af2a3996d7 100644 --- a/include/sound/hda-mlink.h +++ b/include/sound/hda-mlink.h @@ -17,6 +17,12 @@ 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_set_syncprd_unlocked(struct hdac_bus *bus, bool alt, int elid, u32 syncprd); +int hdac_bus_eml_sdw_set_syncprd_unlocked(struct hdac_bus *bus, u32 syncprd); + +int hdac_bus_eml_wait_syncpu_unlocked(struct hdac_bus *bus, bool alt, int elid); +int hdac_bus_eml_sdw_wait_syncpu_unlocked(struct hdac_bus *bus); + 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); @@ -48,6 +54,27 @@ static inline bool hdac_bus_eml_check_interrupt(struct hdac_bus *bus, bool alt, int elid) { return false; } static inline int +hdac_bus_eml_set_syncprd_unlocked(struct hdac_bus *bus, bool alt, int elid, u32 syncprd) +{ + return 0; +} + +static inline int +hdac_bus_eml_sdw_set_syncprd_unlocked(struct hdac_bus *bus, u32 syncprd) +{ + return 0; +} + +static inline int +hdac_bus_eml_wait_syncpu_unlocked(struct hdac_bus *bus, bool alt, int elid) +{ + return 0; +} + +static inline int +hdac_bus_eml_sdw_wait_syncpu_unlocked(struct hdac_bus *bus) { return 0; } + +static inline int hdac_bus_eml_power_up(struct hdac_bus *bus, bool alt, int elid, int sublink) { return 0; diff --git a/sound/soc/sof/intel/hda-mlink.c b/sound/soc/sof/intel/hda-mlink.c index 026642659037..a364d6b5935d 100644 --- a/sound/soc/sof/intel/hda-mlink.c +++ b/sound/soc/sof/intel/hda-mlink.c @@ -254,6 +254,46 @@ static bool hdaml_link_check_interrupt(u32 __iomem *lctl) return val & AZX_ML_LCTL_INTSTS; } +static int hdaml_wait_bit(void __iomem *base, int offset, u32 mask, u32 target) +{ + int timeout = HDAML_POLL_DELAY_RETRY; + u32 reg_read; + + do { + reg_read = readl(base + offset); + if ((reg_read & mask) == target) + return 0; + + timeout--; + usleep_range(HDAML_POLL_DELAY_MIN_US, + HDAML_POLL_DELAY_MIN_US + HDAML_POLL_DELAY_SLACK_US); + } while (timeout != 0); + + return -EAGAIN; +} + +static void hdaml_link_set_syncprd(u32 __iomem *lsync, u32 syncprd) +{ + u32 val; + + val = readl(lsync); + val &= ~AZX_REG_ML_LSYNC_SYNCPRD; + val |= (syncprd & AZX_REG_ML_LSYNC_SYNCPRD); + + /* + * set SYNCPU but do not wait. The bit is cleared by hardware when + * the link becomes active. + */ + val |= AZX_REG_ML_LSYNC_SYNCPU; + + writel(val, lsync); +} + +static int hdaml_link_wait_syncpu(u32 __iomem *lsync) +{ + return hdaml_wait_bit(lsync, 0, AZX_REG_ML_LSYNC_SYNCPU, 0); +} + /* END HDAML section */ static int hda_ml_alloc_h2link(struct hdac_bus *bus, int index) @@ -402,6 +442,56 @@ bool hdac_bus_eml_check_interrupt(struct hdac_bus *bus, bool alt, int elid) } 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) +{ + struct hdac_ext2_link *h2link; + struct hdac_ext_link *hlink; + + h2link = find_ext2_link(bus, alt, elid); + if (!h2link) + return 0; + + if (!h2link->lss) + return 0; + + hlink = &h2link->hext_link; + + hdaml_link_set_syncprd(hlink->ml_addr + AZX_REG_ML_LSYNC, syncprd); + + return 0; +} +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); + +int hdac_bus_eml_wait_syncpu_unlocked(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 0; + + if (!h2link->lss) + return 0; + + hlink = &h2link->hext_link; + + 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); + +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); + static int hdac_bus_eml_power_up_base(struct hdac_bus *bus, bool alt, int elid, int sublink, bool eml_lock) { |