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path: root/drivers/mfd/axp20x-i2c.c
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2021-01-15mfd/bus: sunxi-rsb: Make .remove() callback return voidUwe Kleine-König1-1/+3
The driver core ignores the return value of struct device_driver::remove because there is only little that can be done. To simplify the quest to make this function return void, let struct sunxi_rsb_driver::remove return void, too. All users already unconditionally return 0, this commit makes this obvious and ensures future users don't behave differently. To simplify even further, make axp20x_device_remove() return void instead of returning 0 unconditionally, too. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-11-27mfd: axp20x: Skip of_device_id table when !CONFIG_OFKrzysztof Kozlowski1-0/+2
The driver can match either via ACPI or OF. Its of_device_id table is referenced via of_match_ptr() so it will be unused for !CONFIG_OF builds: drivers/mfd/axp20x-i2c.c:60:34: warning: ‘axp20x_i2c_of_match’ defined but not used [-Wunused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-08-13mfd: axp20x: Allow the AXP803 to be probed by I2CFrank Lee1-0/+2
The AXP803 can be used both using the RSB proprietary bus, or a more traditional I2C bus. Let's add that possibility. Signed-off-by: Frank Lee <frank@allwinnertech.com> Acked-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-07-07mfd: axp20x-i2c: Do not define 'struct acpi_device_id' when !CONFIG_ACPILee Jones1-0/+2
Since ACPI_PTR() is used to NULLify the value when !CONFIG_ACPI, struct axp20x_i2c_acpi_match becomes defined by unused. This squashes the current W=1 kernel builds warning: drivers/mfd/axp20x-i2c.c:82:36: warning: ‘axp20x_i2c_acpi_match’ defined but not used [-Wunused-const-variable=] Cc: Chen-Yu Tsai <wens@csie.org> Cc: Carlo Caione <carlo@caione.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner1-4/+1
Based on 2 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 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license 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 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-14mfd: axp20x: Allow the AXP223 to be probed by I2CMaxime Ripard1-0/+2
The AXP223 can be used both using the RSB proprietary bus, or a more traditional I2C bus. The RSB is a faster bus and provides more features (like some integrity checks on the messages), so it's usually preferrable to use it, but since it's proprietary, when we want to use the PMIC in a multi-master setup, the i2c might make sense as well. Let's add that possibility. Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> Acked-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-07-27mfd: axp20x: Support AXP806 in I2C modeChen-Yu Tsai1-0/+2
The Pine64 H64 board uses an AXP806 PMIC in I2C and self-working mode. The H64 SoC does not have the usual RSB controller. This patch adds AXP806 to the list of devices supported in I2C mode. In theory, all RSB-based PMICs can also be used in I2C mode. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Reviewed-by: Icenowy Zheng <icenowy@aosc.io> Tested-by: Icenowy Zheng <icenowy@aosc.io> Acked-by: Maxime Ripard <maxime.ripard@bootlin.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-11-29mfd: axp20x-i2c: Add i2c-ids to fix module auto-loadingHans de Goede1-3/+4
The i2c subsys does not load modules by compatible, only by i2c-id, with e.g. a modalias of: "i2c:axp209". Populate the axp20x_i2c_id[] table with supported ids, so that module auto-loading will work. Reported-by: Dennis Gilmore <dennis@ausil.us> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-02-12mfd: axp20x: Split the driver into core and i2c bitsChen-Yu Tsai1-0/+104
The axp20x driver assumes the device is i2c based. This is not the case with later chips, which use a proprietary 2 wire serial bus by Allwinner called "Reduced Serial Bus". This patch follows the example of mfd/wm831x and splits it into an interface independent core, and an i2c specific glue layer. MFD_AXP20X and the new MFD_AXP20X_I2C are changed to tristate symbols, allowing the driver to be built as modules. Whitespace and other style errors in the moved i2c specific code have been fixed. Included but unused header files are removed as well. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>