diff options
Diffstat (limited to 'sound/hda')
| -rw-r--r-- | sound/hda/Kconfig | 3 | ||||
| -rw-r--r-- | sound/hda/ext/hdac_ext_bus.c | 47 | ||||
| -rw-r--r-- | sound/hda/hdac_bus.c | 35 |
3 files changed, 35 insertions, 50 deletions
diff --git a/sound/hda/Kconfig b/sound/hda/Kconfig index f6feced15f17..1d475cf3f754 100644 --- a/sound/hda/Kconfig +++ b/sound/hda/Kconfig @@ -6,6 +6,9 @@ config SND_HDA_CORE config SND_HDA_DSP_LOADER bool +config SND_HDA_ALIGNED_MMIO + bool + config SND_HDA_COMPONENT bool diff --git a/sound/hda/ext/hdac_ext_bus.c b/sound/hda/ext/hdac_ext_bus.c index 7825b74068f4..242306d820ec 100644 --- a/sound/hda/ext/hdac_ext_bus.c +++ b/sound/hda/ext/hdac_ext_bus.c @@ -17,67 +17,22 @@ MODULE_DESCRIPTION("HDA extended core"); MODULE_LICENSE("GPL v2"); -static void hdac_ext_writel(u32 value, u32 __iomem *addr) -{ - writel(value, addr); -} - -static u32 hdac_ext_readl(u32 __iomem *addr) -{ - return readl(addr); -} - -static void hdac_ext_writew(u16 value, u16 __iomem *addr) -{ - writew(value, addr); -} - -static u16 hdac_ext_readw(u16 __iomem *addr) -{ - return readw(addr); -} - -static void hdac_ext_writeb(u8 value, u8 __iomem *addr) -{ - writeb(value, addr); -} - -static u8 hdac_ext_readb(u8 __iomem *addr) -{ - return readb(addr); -} - -static const struct hdac_io_ops hdac_ext_default_io = { - .reg_writel = hdac_ext_writel, - .reg_readl = hdac_ext_readl, - .reg_writew = hdac_ext_writew, - .reg_readw = hdac_ext_readw, - .reg_writeb = hdac_ext_writeb, - .reg_readb = hdac_ext_readb, -}; - /** * snd_hdac_ext_bus_init - initialize a HD-audio extended bus * @ebus: the pointer to extended bus object * @dev: device pointer * @ops: bus verb operators - * @io_ops: lowlevel I/O operators, can be NULL. If NULL core will use * default ops * * Returns 0 if successful, or a negative error code. */ int snd_hdac_ext_bus_init(struct hdac_bus *bus, struct device *dev, const struct hdac_bus_ops *ops, - const struct hdac_io_ops *io_ops, const struct hdac_ext_bus_ops *ext_ops) { int ret; - /* check if io ops are provided, if not load the defaults */ - if (io_ops == NULL) - io_ops = &hdac_ext_default_io; - - ret = snd_hdac_bus_init(bus, dev, ops, io_ops); + ret = snd_hdac_bus_init(bus, dev, ops); if (ret < 0) return ret; diff --git a/sound/hda/hdac_bus.c b/sound/hda/hdac_bus.c index 00ea12e67dc8..dc2523ef7d98 100644 --- a/sound/hda/hdac_bus.c +++ b/sound/hda/hdac_bus.c @@ -19,13 +19,11 @@ static const struct hdac_bus_ops default_ops = { * snd_hdac_bus_init - initialize a HD-audio bas bus * @bus: the pointer to bus object * @ops: bus verb operators - * @io_ops: lowlevel I/O operators * * Returns 0 if successful, or a negative error code. */ int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev, - const struct hdac_bus_ops *ops, - const struct hdac_io_ops *io_ops) + const struct hdac_bus_ops *ops) { memset(bus, 0, sizeof(*bus)); bus->dev = dev; @@ -33,7 +31,6 @@ int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev, bus->ops = ops; else bus->ops = &default_ops; - bus->io_ops = io_ops; bus->dma_type = SNDRV_DMA_TYPE_DEV; INIT_LIST_HEAD(&bus->stream_list); INIT_LIST_HEAD(&bus->codec_list); @@ -218,3 +215,33 @@ void snd_hdac_bus_remove_device(struct hdac_bus *bus, flush_work(&bus->unsol_work); } EXPORT_SYMBOL_GPL(snd_hdac_bus_remove_device); + +#ifdef CONFIG_SND_HDA_ALIGNED_MMIO +/* Helpers for aligned read/write of mmio space, for Tegra */ +unsigned int snd_hdac_aligned_read(void __iomem *addr, unsigned int mask) +{ + void __iomem *aligned_addr = + (void __iomem *)((unsigned long)(addr) & ~0x3); + unsigned int shift = ((unsigned long)(addr) & 0x3) << 3; + unsigned int v; + + v = readl(aligned_addr); + return (v >> shift) & mask; +} +EXPORT_SYMBOL_GPL(snd_hdac_aligned_read); + +void snd_hdac_aligned_write(unsigned int val, void __iomem *addr, + unsigned int mask) +{ + void __iomem *aligned_addr = + (void __iomem *)((unsigned long)(addr) & ~0x3); + unsigned int shift = ((unsigned long)(addr) & 0x3) << 3; + unsigned int v; + + v = readl(aligned_addr); + v &= ~(mask << shift); + v |= val << shift; + writel(v, aligned_addr); +} +EXPORT_SYMBOL_GPL(snd_hdac_aligned_write); +#endif /* CONFIG_SND_HDA_ALIGNED_MMIO */ |