<linux/pm_runtime.h> should be included to fix any compilation errors
associated with enabling the PM_RUNTIME config.
Change-Id: Ided562e1351ccb5eef8957c305060275a5679d42
Signed-off-by: Mahesh Sivasubramanian <msivasub@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>
The spmi-dev-container binding is intended for SPMI
configurations that have multiple device nodes associated with
only one spmi_device. By default, if this flag is not specified,
each device node will create a new spmi_device.
Sometimes having multiple spmi_devices for SPMI device nodes is
superfluous. One example of this is gpios. In some architectures,
a single gpio is treated as a unique device. But from a gpio_chip
perspective, the chip is comprised of many gpios. Beyond wasting
memory allocating a unique spmi_device per gpio, the implication
of not coalescing spmi_devices is that the clients probe() routine
would be called N number of times. But this sort of behavior makes
it difficult to realize when a gpio_chip starts and stops. If we
assume that one gpio_chip represents one call to probe(), then
this problem is solved, since all gpios in that chip will be
passed as resources.
In order to support multiple device nodes per spmi_device, we
also need to extend the data structures for spmi_resources.
This change also makes an effort to cleanup some of the error
handling for illegal combinations of device bindings, as well as
adding some additional documentation.
Change-Id: If3ce2aaaa07bdf79e0d9fdedf16419e74a00fbec
Signed-off-by: Michael Bohan <mbohan@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>
SPMI (System Power Management Interface) is a specification
developed by the MIPI (Mobile Industry Process Interface) Alliance
optimized for the real time control of Power Management ICs (PMIC).
SPMI is a two-wire serial interface that supports up to 4 master
devices and up to 16 logical slaves. A physical PMIC device may
consist of multiple logical slave interfaces.
The framework supports message APIs, multiple busses (1 controller
per bus) and multiple clients/slave devices per controller.
Change-Id: Ib6319047b4ab9cea6dfb0879312c4c1f63462439
Signed-off-by: Kenneth Heitke <kheitke@codeaurora.org>
