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19abfefd4c
linux/sound/pci
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Takashi Iwai 19abfefd4c ALSA: hda: Direct MMIO accesses 
HD-audio drivers access to the mmio registers indirectly via the
corresponding bus->io_ops callbacks.  This is because some platform
(notably Tegra SoC) requires the word-aligned access.  But it's rather
a rare case, and other platforms suffer from the penalties by indirect
calls unnecessarily.

This patch is an attempt to optimize and cleanup for this situation.
Now the special aligned access is used only when a new kconfig
CONFIG_SND_HDA_ALIGNED_MMIO is set.  And the HD-audio core itself
provides the aligned MMIO access helpers instead of the driver side.
If Kconfig isn't set (as default), the standard helpers like readl()
or writel() are used directly.

A couple of places in ASoC Intel drivers have the access via io_ops
reg_writel(), and they are replaced with the direct writel() calls.

And now with this patch, the whole bus->io_ops becomes empty, so it's
dropped completely.  The bus initialization functions are changed
accordingly as well to drop the whole bus->io_ops.

Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-08-08 16:36:18 +02:00
..
ac97 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
ali5451 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 88 2019-05-24 17:37:52 +02:00
asihpi ASoC: Updates for v5.3 2019-07-08 14:45:34 +02:00
au88x0 ALSA: au88x0: Remove unneeded variable: "changed" 2019-07-15 08:53:50 +02:00
aw2 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 456 2019-06-19 17:09:09 +02:00
ca0106 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cs46xx treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cs5535audio treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
ctxfi treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 364 2019-06-05 17:37:09 +02:00
echoaudio ASoC: Updates for v5.3 2019-07-08 14:45:34 +02:00
emu10k1 ALSA: emu10k1: Remove unneeded variable "change" 2019-07-15 08:54:09 +02:00
hda ALSA: hda: Direct MMIO accesses 2019-08-08 16:36:18 +02:00
ice1712 sound fixes for 5.2-rc5 2019-06-14 05:37:06 -10:00
korg1212 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
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lx6464es ALSA: lx6464es: Remove unneeded variable err 2019-07-10 11:53:03 +02:00
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ad1889.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
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azt3328.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 116 2019-05-24 17:39:02 +02:00
azt3328.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bt87x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 32 2019-05-24 17:27:10 +02:00
cmipci.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cs4281.c ASoC: Updates for v5.3 2019-07-08 14:45:34 +02:00
cs5530.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118 2019-05-24 17:39:02 +02:00
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fm801.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
intel8x0.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
intel8x0m.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
maestro3.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rme32.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
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