diff options
| author | Simon Glass <sjg@chromium.org> | 2016-01-21 19:43:31 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2016-01-21 20:42:34 -0700 |
| commit | 5fd6badbd265ef45d3e1faebe5868426ab69595c (patch) | |
| tree | 51aa4fe2fb3d0af4e3fb80a1cd1ed4ceb6a8f7c8 /drivers/misc | |
| parent | e1227764cdbcd397728e95de1662c2b9e967d5fe (diff) | |
| download | u-boot-5fd6badbd265ef45d3e1faebe5868426ab69595c.zip u-boot-5fd6badbd265ef45d3e1faebe5868426ab69595c.tar.gz u-boot-5fd6badbd265ef45d3e1faebe5868426ab69595c.tar.bz2 | |
dm: Add a power sequencing uclass
Some devices need special sequences to be used when starting up. Add a
uclass for this. Drivers can be added to provide specific features as
needed.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/Kconfig | 18 | ||||
| -rw-r--r-- | drivers/misc/Makefile | 1 | ||||
| -rw-r--r-- | drivers/misc/pwrseq-uclass.c | 24 |
3 files changed, 43 insertions, 0 deletions
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index b92da4e..cba2363 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -90,6 +90,24 @@ config MXC_OCOTP Programmable memory pages that are stored on the some Freescale i.MX processors. +config PWRSEQ + bool "Enable power-sequencing drivers" + depends on DM + help + Power-sequencing drivers provide support for controlling power for + devices. They are typically referenced by a phandle from another + device. When the device is started up, its power sequence can be + initiated. + +config SPL_PWRSEQ + bool "Enable power-sequencing drivers for SPL" + depends on PWRSEQ + help + Power-sequencing drivers provide support for controlling power for + devices. They are typically referenced by a phandle from another + device. When the device is started up, its power sequence can be + initiated. + config PCA9551_LED bool "Enable PCA9551 LED driver" help diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index aa137f5..fc8eb6f 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -24,6 +24,7 @@ obj-$(CONFIG_MXC_OCOTP) += mxc_ocotp.o obj-$(CONFIG_MXS_OCOTP) += mxs_ocotp.o obj-$(CONFIG_NS87308) += ns87308.o obj-$(CONFIG_PDSP188x) += pdsp188x.o +obj-$(CONFIG_$(SPL_)PWRSEQ) += pwrseq-uclass.o obj-$(CONFIG_SANDBOX) += reset_sandbox.o ifdef CONFIG_DM_I2C obj-$(CONFIG_SANDBOX) += i2c_eeprom_emul.o diff --git a/drivers/misc/pwrseq-uclass.c b/drivers/misc/pwrseq-uclass.c new file mode 100644 index 0000000..8ed2ad4 --- /dev/null +++ b/drivers/misc/pwrseq-uclass.c @@ -0,0 +1,24 @@ +/* + * Copyright (c) 2015 Google, Inc + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <dm.h> +#include <pwrseq.h> + +int pwrseq_set_power(struct udevice *dev, bool enable) +{ + struct pwrseq_ops *ops = pwrseq_get_ops(dev); + + if (!ops->set_power) + return -ENOSYS; + + return ops->set_power(dev, enable); +} + +UCLASS_DRIVER(pwrseq) = { + .id = UCLASS_PWRSEQ, + .name = "pwrseq", +}; |