linux-toradex.git/drivers/mfd/exynos-lpass.c, branch v5.8-rc2

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 390

2019-06-05T15:37:11+00:00

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 and
  only version 2 as published by the free software foundation

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 1 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Kate Stewart 
Reviewed-by: Armijn Hemel 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190531081037.927746163@linutronix.de
Signed-off-by: Greg Kroah-Hartman

mfd: exynos-lpass: Enable UART module support

2019-01-03T08:32:42+00:00

This patch enables proper interrupts routing between UART module
in Exynos Audio SubSystem and the rest of the SoC. This routing is
completely transparent for UART device and CPU/GIC. UART driver requests
interrupts from the respective controller and enables/masks/handles it
by itself via standard methods.

There are boards (for example TM2), which use UART module in Exynos Audio
SubStem for communication with BlueTooth chip.

Signed-off-by: Beomho Seo 
[mszyprow: rephrased commit message, added UART reset]
Signed-off-by: Marek Szyprowski 
Reviewed-by: Sylwester Nawrocki 
Signed-off-by: Lee Jones

mfd: exynos: Use devm_of_platform_populate()

2017-07-06T07:29:12+00:00

Use devm_of_platform_populate() to be sure that of_platform_depopulate
is called when removing the driver.

Signed-off-by: Benjamin Gaignard 
Signed-off-by: Lee Jones

mfd: exynos-lpass: Add runtime PM support

2017-04-27T10:54:36+00:00

Convert exisitng lpass-suspend/resume callbacks into runtime PM callbacks.
This way Exynos LPASS driver will be ready for use with power domains
enabled. LPASS will be runtime resumed/suspended as a result of its child
devices runtime PM transitions.

Signed-off-by: Marek Szyprowski 
Acked-by: Krzysztof Kozlowski 
Acked-by: Sylwester Nawrocki 
Signed-off-by: Lee Jones

mfd: exynos-lpass: Add missing remove() function

2017-04-27T08:25:07+00:00

Disable device on driver remove and release allocated regmap.

Signed-off-by: Marek Szyprowski 
Reviewed-by: Krzysztof Kozlowski 
Acked-by: Sylwester Nawrocki 
Acked-for-MFD-by: Lee Jones 
Signed-off-by: Lee Jones

mfd: exynos-lpass: Add support for clocks

2017-04-27T08:25:07+00:00

Exynos LPASS requires some clocks to be enabled to make any access to its
registers. This patch adds code for handling such clocks. For current set
of registers it is enough to keep sfr0_ctrl clock enabled. Till now it
worked only because those clocks were enabled by bootloader and driver
probe() happened before they were disabled by clock core because of lack
of users. Handling those clocks is also needed to make it possible to
enable support for audio power domain.

This patch requires adding sfr0_ctrl clock to device tree.

Signed-off-by: Marek Szyprowski 
Reviewed-by: Krzysztof Kozlowski 
Acked-by: Sylwester Nawrocki 
Acked-by: Rob Herring 
Acked-for-MFD-by: Lee Jones 
Signed-off-by: Lee Jones

mfd: exynos-lpass: Remove pad retention control

2017-04-27T08:25:07+00:00

Pad retention should be controlled from pin control driver, so remove it
from Exynos LPASS driver. After this change, no more access to PMU regmap
is needed, so remove also the code for handling PMU regmap.

Signed-off-by: Marek Szyprowski 
Acked-by: Krzysztof Kozlowski 
Acked-by: Sylwester Nawrocki 
Acked-by: Rob Herring 
Acked-for-MFD-by: Lee Jones 
Signed-off-by: Lee Jones

mfd: exynos-lpass: Use common soc/exynos-regs-pmu.h header

2017-03-23T10:47:27+00:00

The MFD-specific header will go away because it duplicates defines from
exynos-regs-pmu.h.

Reported-by: kbuild test robot 
Signed-off-by: Krzysztof Kozlowski 
Reviewed-by: Bartlomiej Zolnierkiewicz 
Signed-off-by: Lee Jones

mfd: exynos-lpass: Mark PM functions as __maybe_unused

2016-10-04T14:48:04+00:00

The newly added exynos lpass driver produces a build warning when
CONFIG_PM is disabled since the only callers of exynos_lpass_disable
are under an #ifdef:

drivers/mfd/exynos-lpass.c:93:13: error: 'exynos_lpass_disable' defined but not used [-Werror=unused-function]
 static void exynos_lpass_disable(struct exynos_lpass *lpass)

This removes the #ifdef and replaces it with __maybe_unused annotations
so the compiler can leave out the unused code silently with less
room for mistakes.

Fixes: 36c26760bba8 ("mfd: Add Samsung Exynos Low Power Audio Subsystem driver")
Signed-off-by: Arnd Bergmann 
Reviewed-by: Sylwester Nawrocki 
Signed-off-by: Lee Jones

mfd: Add Samsung Exynos Low Power Audio Subsystem driver

2016-10-04T14:48:02+00:00

This patch adds common driver for the Top block of the Samsung Exynos
SoC Low Power Audio Subsystem.  This is a minimal driver which prepares
resources for IP blocks like I2S, audio DMA and UART and exposes
a regmap for the Top block registers.  Also system power ops are added
to ensure the Audio Subsystem is operational after system suspend/resume
cycle.

Signed-off-by: Inha Song 
Signed-off-by: Beomho Seo 
Signed-off-by: Sylwester Nawrocki 
Tested-by: Chanwoo Choi 
Signed-off-by: Lee Jones