AuxXxilium/linux_dsm_epyc7002
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ae3b4469db
linux_dsm_epyc7002/drivers/video/backlight
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Brian Norris 6025530738 backlight: lp855x: Add enable regulator 
The LP8556 datasheet describes an EN/VDDIO input, which serves "both as
a chip enable and as a power supply reference for PWM, SDA, and SCL
inputs." The LP8556 that I'm testing doesn't respond properly if I try
to talk I2C to it too quickly after enabling VDDIO, and the LP8555
datasheet mentions a t_RESPONSE delay of up to 1 millisecond.

Support this EN/VDDIO by adding a regulator property to the binding;
enabling this regulator at probe time; and sleeping for 1 to 2ms, if the
EN/VDDIO regulator was provided.

Signed-off-by: Brian Norris <briannorris@chromium.org>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Milo Kim <milo.kim@ti.com>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-06-29 10:06:21 +01:00
..
88pm860x_bl.c backlight: 88pm860x_bl: Add missing of_node_put 2015-10-15 12:06:21 +01:00
aat2870_bl.c backlight: Remove .owner field for drivers using module_platform_driver 2014-08-28 14:09:48 +01:00
adp5520_bl.c backlight: adp5520: Add blank line after declarations 2014-08-29 08:23:50 +01:00
adp8860_bl.c backlight: adp8860: Fix another uninitialized variable use 2016-01-11 07:58:43 +00:00
adp8870_bl.c backlight: adp88x0: Fix uninitialized variable use 2016-01-11 05:56:12 +00:00
ams369fg06.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
apple_bl.c
as3711_bl.c backlight: Remove .owner field for drivers using module_platform_driver 2014-08-28 14:09:48 +01:00
backlight.c video / backlight: remove the backlight_device_registered API 2016-05-04 23:41:14 +02:00
bd6107.c backlight: Remove trivial get_brightness implementations 2014-06-23 13:24:22 +01:00
corgi_lcd.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
cr_bllcd.c backlight: cr_bllcd: Add blank line after declarations 2014-08-29 08:24:51 +01:00
da903x_bl.c backlight: Remove .owner field for drivers using module_platform_driver 2014-08-28 14:09:48 +01:00
da9052_bl.c video: backlight: da9052: Constify platform_device_id 2015-06-23 15:28:59 +01:00
ep93xx_bl.c backlight: Remove .owner field for drivers using module_platform_driver 2014-08-28 14:09:48 +01:00
generic_bl.c backlight: generic_bl: Remove unused function 2014-08-28 14:10:16 +01:00
gpio_backlight.c backlight: gpio-backlight: Use default-on on GPIO request 2016-01-11 07:58:35 +00:00
hp680_bl.c
hx8357.c
ili922x.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
ili9320.c
ili9320.h
ipaq_micro_bl.c backlight: ipaq_micro: Fix sparse non static symbol warning 2014-07-31 10:31:22 +01:00
jornada720_bl.c backlight: jornada720: Remove 'else' after a return 2014-08-29 08:26:32 +01:00
jornada720_lcd.c backlight: jornada720: Remove 'else' after a return 2014-08-29 08:26:51 +01:00
kb3886_bl.c
Kconfig backlight: pm8941-wled: Move PM8941 WLED driver to backlight 2015-08-25 08:41:56 +01:00
l4f00242t03.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
lcd.c
ld9040_gamma.h
ld9040.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
lm3533_bl.c backlight: Remove .owner field for drivers using module_platform_driver 2014-08-28 14:09:48 +01:00
lm3630a_bl.c backlight: lm3630a: explicitly apply PWM config extracted from pwm_args 2016-05-17 14:45:05 +02:00
lm3639_bl.c backlight: lm3639: Remove unnecessary return statements 2014-08-29 08:25:23 +01:00
lms283gf05.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
lms501kf03.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
locomolcd.c
lp855x_bl.c backlight: lp855x: Add enable regulator 2016-06-29 10:06:21 +01:00
lp8788_bl.c backlight: lp8788: Explicitly apply PWM config extracted from pwm_args 2016-05-17 14:45:04 +02:00
ltv350qv.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
ltv350qv.h
lv5207lp.c backlight: Remove trivial get_brightness implementations 2014-06-23 13:24:22 +01:00
Makefile backlight: pm8941-wled: Move PM8941 WLED driver to backlight 2015-08-25 08:41:56 +01:00
max8925_bl.c backlight: Remove .owner field for drivers using module_platform_driver 2014-08-28 14:09:48 +01:00
omap1_bl.c backlight: omap1: add blank line after declarations 2014-08-29 08:27:53 +01:00
ot200_bl.c backlight: Remove .owner field for drivers using module_platform_driver 2014-08-28 14:09:48 +01:00
pandora_bl.c backlight: Remove .owner field for drivers using module_platform_driver 2014-08-28 14:09:48 +01:00
pcf50633-backlight.c backlight: pcf50633: Add blank line after declarations 2014-08-29 08:25:53 +01:00
platform_lcd.c backlight: Remove .owner field for drivers using module_platform_driver 2014-08-28 14:09:48 +01:00
pm8941-wled.c backlight: pm8941-wled: Add default-brightness property 2015-10-30 18:47:51 +00:00
pwm_bl.c backlight: pwm_bl: Use pwm_get_args() where appropriate 2016-05-17 14:45:03 +02:00
s6e63m0_gamma.h
s6e63m0.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
sky81452-backlight.c backlight: sky81452: Remove unneeded use of IS_ERR_VALUE() macro 2015-08-25 08:43:21 +01:00
tdo24m.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
tosa_bl.c backlight: tosa: Export I2C module alias information 2015-08-25 08:44:12 +01:00
tosa_lcd.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
tps65217_bl.c backlight: tps65217_bl: Add MODULE_DEVICE_TABLE 2016-01-11 06:36:35 +00:00
vgg2432a4.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
wm831x_bl.c backlight: wm831x_bl: Add blank line after declarations 2014-08-29 08:26:21 +01:00