Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

ALSA: hda - Avoid tricky macros

Browse source 
The macros _snd_hdac_chip_read() and *_write() expand to different
types (b,w,l) per their argument.  They were thought to be used only
internally for other snd_hdac_chip_*() macros, but in some situations
we need to call these directly, and they are way too ugly.

Instead of saving a few lines, we just write these macros explicitly
with the types, so that they can be used in a saner way.

Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2017-03-29 08:27:15 +02:00
parent d1600401fa
commit 2c1f81381e
3 changed files with 21 additions and 13 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

28
include/sound/hdaudio.h
View file

@ -368,24 +368,32 @@ void snd_hdac_bus_free_stream_pages(struct hdac_bus *bus);
/*
* macros for easy use
*/
#define _snd_hdac_chip_write(type, chip, reg, value) \
((chip)->io_ops->reg_write ## type(value, (chip)->remap_addr + (reg)))
#define _snd_hdac_chip_read(type, chip, reg) \
((chip)->io_ops->reg_read ## type((chip)->remap_addr + (reg)))
#define _snd_hdac_chip_writeb(chip, reg, value) \
((chip)->io_ops->reg_writeb(value, (chip)->remap_addr + (reg)))
#define _snd_hdac_chip_readb(chip, reg) \
((chip)->io_ops->reg_readb((chip)->remap_addr + (reg)))
#define _snd_hdac_chip_writew(chip, reg, value) \
((chip)->io_ops->reg_writew(value, (chip)->remap_addr + (reg)))
#define _snd_hdac_chip_readw(chip, reg) \
((chip)->io_ops->reg_readw((chip)->remap_addr + (reg)))
#define _snd_hdac_chip_writel(chip, reg, value) \
((chip)->io_ops->reg_writel(value, (chip)->remap_addr + (reg)))
#define _snd_hdac_chip_readl(chip, reg) \
((chip)->io_ops->reg_readl((chip)->remap_addr + (reg)))
/* read/write a register, pass without AZX_REG_ prefix */
#define snd_hdac_chip_writel(chip, reg, value) \
_snd_hdac_chip_write(l, chip, AZX_REG_ ## reg, value)
_snd_hdac_chip_writel(chip, AZX_REG_ ## reg, value)
#define snd_hdac_chip_writew(chip, reg, value) \
_snd_hdac_chip_write(w, chip, AZX_REG_ ## reg, value)
_snd_hdac_chip_writew(chip, AZX_REG_ ## reg, value)
#define snd_hdac_chip_writeb(chip, reg, value) \
_snd_hdac_chip_write(b, chip, AZX_REG_ ## reg, value)
_snd_hdac_chip_writeb(chip, AZX_REG_ ## reg, value)
#define snd_hdac_chip_readl(chip, reg) \
_snd_hdac_chip_read(l, chip, AZX_REG_ ## reg)
_snd_hdac_chip_readl(chip, AZX_REG_ ## reg)
#define snd_hdac_chip_readw(chip, reg) \
_snd_hdac_chip_read(w, chip, AZX_REG_ ## reg)
_snd_hdac_chip_readw(chip, AZX_REG_ ## reg)
#define snd_hdac_chip_readb(chip, reg) \
_snd_hdac_chip_read(b, chip, AZX_REG_ ## reg)
_snd_hdac_chip_readb(chip, AZX_REG_ ## reg)
/* update a register, pass without AZX_REG_ prefix */
#define snd_hdac_chip_updatel(chip, reg, mask, val) \

2
sound/hda/hdac_controller.c
View file

@ -272,7 +272,7 @@ int snd_hdac_bus_parse_capabilities(struct hdac_bus *bus)
/* Lets walk the linked capabilities list */
do {
cur_cap = _snd_hdac_chip_read(l, bus, offset);
cur_cap = _snd_hdac_chip_readl(bus, offset);
dev_dbg(bus->dev, "Capability version: 0x%x\n",
(cur_cap & AZX_CAP_HDR_VER_MASK) >> AZX_CAP_HDR_VER_OFF);

4
sound/hda/hdac_stream.c
View file

@ -555,12 +555,12 @@ void snd_hdac_stream_sync_trigger(struct hdac_stream *azx_dev, bool set,
if (!reg)
reg = AZX_REG_SSYNC;
val = _snd_hdac_chip_read(l, bus, reg);
val = _snd_hdac_chip_readl(bus, reg);
if (set)
val |= streams;
else
val &= ~streams;
_snd_hdac_chip_write(l, bus, reg, val);
_snd_hdac_chip_writel(bus, reg, val);
}
EXPORT_SYMBOL_GPL(snd_hdac_stream_sync_trigger);