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path: root/drivers/mfd/ti-lmu.c
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2018-10-23mfd: ti-lmu: Use of_device_get_match_data() helperPavel Machek
Replace of_match_device() with of_device_get_match_data(), which slightly decreases lines of code and allows to move the DT table next to the I2C table. Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-10-23mfd: ti-lmu: Use managed resource for everythingPavel Machek
This replaces all remaining unmanaged resources with device managed ones, so that the remove function is no longer needed. This makes the code slightly shorter and fixes two problems: 1. The hardware is disabled after the child devices have been removed. Previously there was a potential race condition. 2. The hardware is disabled when mfd_add_devices fails during probe. Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-10-23mfd: ti-lmu: Switch to GPIODPavel Machek
Use new descriptor based API instead of the legacy one. Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-10-23mfd: ti-lmu: constify mfd_cell tablesSebastian Reichel
Add const attribute to all mfd_cell structures. Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2017-04-27mfd: Add TI LMU driverMilo Kim
TI LMU (Lighting Management Unit) driver supports lighting devices below. LM3532, LM3631, LM3632, LM3633, LM3695 and LM3697. LMU devices have common features. - I2C interface for accessing device registers - Hardware enable pin control - Backlight brightness control - Notifier for hardware fault monitoring - Regulators for LCD display bias It contains fault monitor, backlight, LED and regulator driver. LMU fault monitor ----------------- LM3633 and LM3697 provide hardware monitoring feature. It enables open or short circuit detection. After monitoring is done, each device should be re-initialized. Notifier is used for this case. Separate patch for 'ti-lmu-fault-monitor' will be sent later. Backlight --------- It's handled by TI LMU backlight consolidated driver and chip dependent data. Separate patchset will be sent later. LED indicator ------------- LM3633 has 6 indicator LEDs. Programmable dimming pattern is also supported. Separate patch for 'leds-lm3633' will be sent later. Regulator --------- LM3631 has 5 regulators for the display bias. LM3632 supports 3 regulators. One consolidated driver enables it. The lm363x regulator driver is already upstreamed. Signed-off-by: Milo Kim <milo.kim@ti.com> Tested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>