kernel/linux.git/drivers/amba/bus.c, branch v3.11.1

PM / Runtime: Rework the "runtime idle" helper routine

2013-06-03T19:49:52+00:00

The "runtime idle" helper routine, rpm_idle(), currently ignores return values from .runtime_idle() callbacks executed by it. However, it turns out that many subsystems use pm_generic_runtime_idle() which checks the return value of the driver's callback and executes pm_runtime_suspend() for the device unless that value is not 0. If that logic is moved to rpm_idle() instead, pm_generic_runtime_idle() can be dropped and its users will not need any .runtime_idle() callbacks any more. Moreover, the PCI, SCSI, and SATA subsystems' .runtime_idle() routines, pci_pm_runtime_idle(), scsi_runtime_idle(), and ata_port_runtime_idle(), respectively, as well as a few drivers' ones may be simplified if rpm_idle() calls rpm_suspend() after 0 has been returned by the .runtime_idle() callback executed by it. To reduce overall code bloat, make the changes described above. Tested-by: Mika Westerberg Tested-by: Kevin Hilman Signed-off-by: Rafael J. Wysocki Acked-by: Kevin Hilman Reviewed-by: Ulf Hansson Acked-by: Alan Stern

Drivers: amba: remove __dev* attributes.

2013-01-03T23:57:02+00:00

CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed, as well as the use of CONFIG_HOTPLUG. This patch does both, removing the use of CONFIG_HOTPLUG in the amba/bus.c file, and __devinit and __devinitconst in the tegra-ahb.c driver. Cc: Bill Pemberton Cc: Russell King Signed-off-by: Greg Kroah-Hartman

ARM: 7588/1: amba: create a resource parent registrator

2012-12-03T11:15:35+00:00

This creates amba_apb_device_add_res() and amba_ahb_device_add_res() respectively, to add devices with another parent than iomem_resource. This is needed to specify that a device is contained in a specific IO range. Signed-off-by: Linus Walleij Signed-off-by: Russell King

ARM: 7431/1: amba: use the new linux/sizes.h

2012-06-28T16:14:35+00:00

Signed-off-by: Alessandro Rubini Acked-by: Giancarlo Asnaghi Acked-by: Linus Walleij Cc: Alan Cox Signed-off-by: Russell King

AMBA: get rid of last two uses of NO_IRQ

2012-05-03T10:33:15+00:00

This gets rid of the last two users of NO_IRQ in AMBA primecell drivers. Signed-off-by: Russell King

ARM: 7369/1: amba: add functions to add devices dynamically

2012-04-19T18:31:33+00:00

Add two functions to add APB and AHB devices to the amba (PrimeCell) bus dynamically. This is modeled after the static definition macros recently introduced into and can help us in factoring out a bunch of code across the kernel. Since a lot of call sites seem to be using a returned struct amba device* pointer, let's use that. Signed-off-by: Linus Walleij Signed-off-by: Russell King

ARM: 7366/3: amba: Remove AMBA level regulator support

2012-04-13T13:04:08+00:00

The AMBA bus regulator support is being used to model on/off switches for power domains which isn't terribly idiomatic for modern kernels with the generic power domain code and creates integration problems on platforms which don't use regulators for their power domains as it's hard to tell the difference between a regulator that is needed but failed to be provided and one that isn't supposed to be there (though DT does make that easier). Platforms that wish to use the regulator API to manage their power domains can indirect via the power domain interface. This feature is only used with the vape supply of the db8500 PRCMU driver which supplies the UARTs and MMC controllers, none of which have support for managing vcore at runtime in mainline (only pl022 SPI controller does). Update that supply to have an always_on constraint until the power domain support for the system is updated so that it is enabled for these users, this is likely to have no impact on practical systems as probably at least one of these devices will be active and cause AMBA to hold the supply on anyway. Signed-off-by: Mark Brown Acked-by: Linus Walleij Tested-by: Shawn Guo Signed-off-by: Russell King

ARM: amba: make use of -1 IRQs warn

2012-01-25T11:04:02+00:00

Make the core warn about the use of -1 (NO_IRQ) Signed-off-by: Russell King

ARM: amba: make irq 0 invalid

2012-01-25T11:02:02+00:00

Fix core bus and MMCI such that irq 0 means that there is no IRQ attached. Signed-off-by: Russell King

ARM: amba: add amba_device allocation/add/put functions

2012-01-25T11:02:01+00:00

Add functions to allocate and initialize AMBA device structures, and add them to the Linux device manager. This allows us to kill this type of operation from individual platforms, moving it to core code. Signed-off-by: Russell King