snowball/igloo-kernel.git/drivers/amba, branch u0

ARM: 6758/1: amba: support pm ops

2011-02-23T16:26:46+00:00

Support pm_ops in the AMBA bus, required to allow drivers to use runtime pm. The implementation of AMBA bus pm ops is based on the platform bus implementation. Acked-by: Rafael J. Wysocki Acked-by: Linus Walleij Signed-off-by: Rabin Vincent Signed-off-by: Russell King

ARM: amba: make internal ID table handling const

2011-02-23T16:24:19+00:00

As all probe() functions now take a const pointer, we can make the bus level code deal with const pointers too. Signed-off-by: Russell King

ARM: 6662/1: amba: make amba_bustype non-static

2011-02-23T16:24:08+00:00

Export amba_bustype struct so it can be used for things like registering bus notifiers. Signed-off-by: Rob Herring Signed-off-by: Russell King

ARM: 6467/1: amba: optional PrimeCell core voltage switch

2010-11-26T10:59:12+00:00

On some contemporary sub-micron SoCs, peripherals on the chip have power domain switches, i.e. the voltage to the core may be turned off to conserve power. In the Ux500 we have this for out PrimeCell derivates. This patch makes it possible to specify an (optional) regulator to handle the voltage domain switch on AMBA PrimeCells, modeled very similar to how block clocks are handled. Additional amba_vcore_[enable|disable] calls are supplied to make it possible introduce optional powering off of the core voltage. Using this will require code to spool/unspool any core HW state. Cc: Rabin Vincent Cc: Bengt Jonsson Cc: Jonas Aaberg Signed-off-by: Linus Walleij Signed-off-by: Russell King

ARM: 6368/1: move the PrimeCell IDs to use macros

2010-10-08T09:02:27+00:00

This make four macros for the PrimeCell ID register available to drivers that use them witout using the PrimeCell/AMBA bus abstraction and struct amba_device. It also moves the magic PrimeCell CID "B105F00D" to the bus.h header file. Signed-off-by: Linus Walleij Signed-off-by: Russell King

ARM: AMBA: Add pclk support to AMBA bus infrastructure

2010-07-31T12:07:27+00:00

Some platforms gate the pclk (APB - the bus - clock) to the peripherals for power saving, along with the functional clock. When devices are accessed without pclk enabled, the kernel will oops. This gives them two options: 1. Leave all clocks on all the time. 2. Attempt to gate pclk along with the functional clock. (With some hardware, pclk and the functional clock are gated by a single bit in a register.) (1) has the disadvantage that it causes increased power usage, which is bad news for battery operated devices. (2) can lead to kernel oops if registers are accessed without the functional clock being enabled. So, introduce the apb_pclk signal in such a way existing drivers don't need to be updated. Essentially, this means we guarantee that: 1. pclk will be enabled whenever the driver is bound to a device - from probe() to remove() time. 2. pclk will also be enabled when reading the primecell IDs from the device. In order to allow drivers to be incrementally updated to achieve greater power savings, we provide two additional calls to allow drivers to manage the pclk - amba_pclk_enable()/amba_pclk_disable(). Signed-off-by: Russell King

Merge branches 'arm', 'at91', 'bcmring', 'ep93xx', 'mach-types', 'misc' and 'w90x900' into devel

2009-09-12T11:01:34+00:00

ARM: 5625/1: fix hard coded 4K resource size in amba bus detection

2009-09-02T10:21:15+00:00

This patch modifies the amba bus detection logic in the kernel to detect the AMBA devices using the calculated resource size information rather than the hard coded 4K size. It also calculates the resource size when request mem region and release mem region. Signed-off-by: Leo Chen Signed-off-by: Russell King

[ARM] amba: fix amba device resources

2009-07-05T21:39:08+00:00

AMBA device resources were being reported as: 10004000-10004fff : This is because dev_name() was returning NULL prior to device_register. Ensure that the struct device is properly initialized, and the name is set before adding it to the device tree. Signed-off-by: Russell King

amba: struct device - replace bus_id with dev_name(), dev_set_name()

2009-03-24T23:38:22+00:00

Acked-by: Greg Kroah-Hartman Signed-off-by: Kay Sievers