kernel/linux.git/include/linux/regmap.h, branch v3.5.3

regmap: add support for non contiguous status to regmap-irq

2012-05-14T16:40:05+00:00

In some chips the IRQ status registers are not contiguous in the register map but spaced at even spaces. This is an easy case to handle with minor changes. It is assume for this purpose that the stride for status is equal to the stride for mask/ack registers as well. Signed-off-by: Graeme Gregory Signed-off-by: Mark Brown

regmap: Convert regmap_irq to use irq_domain

2012-05-13T18:25:59+00:00

This gets us up to date with the recommended current kernel infrastructure and should transparently give us device tree interrupt bindings for any devices using the framework. If an explicit IRQ mapping is passed in then a legacy interrupt range is created, otherwise a simple linear mapping is used. Previously a mapping was mandatory so existing drivers should not be affected. A function regmap_irq_get_virq() is provided to allow drivers to map individual IRQs which should be used in preference to the existing regmap_irq_chip_get_base() which is only valid if a legacy IRQ range is provided. Signed-off-by: Mark Brown

Merge branches 'regmap-core', 'regmap-stride', 'regmap-mmio' and 'regmap-irq' into regmap-next

2012-05-13T18:20:47+00:00

regmap: Implement dev_get_regmap()

2012-05-08T17:19:15+00:00

Use devres to implement dev_get_regmap(). This should mean that in almost all cases devices wishing to take advantage of framework features based on regmap shouldn't need to explicitly pass the regmap into the framework. This simplifies device setup a bit. Signed-off-by: Mark Brown

regmap: Converts group operation into single read write operations

2012-04-30T22:29:56+00:00

Some devices does not support bulk read and write operations, for them we have series of single write and read operations. Signed-off-by: Anthony Olech Signed-off-by: Ashish Jangam [Fixed coding style, don't check use_single_rw before assign --broonie ] Signed-off-by: Mark Brown

regmap: implement register striding

2012-04-10T10:01:18+00:00

regmap_config.reg_stride is introduced. All extant register addresses are a multiple of this value. Users of serial-oriented regmap busses will typically set this to 1. Users of the MMIO regmap bus will typically set this based on the value size of their registers, in bytes, so 4 for a 32-bit register. Throughout the regmap code, actual register addresses are used. Wherever the register address is used to index some array of values, the address is divided by the stride to determine the index, or vice-versa. Error- checking is added to all entry-points for register address data to ensure that register addresses actually satisfy the specified stride. The MMIO bus ensures that the specified stride is large enough for the register size. Signed-off-by: Stephen Warren Signed-off-by: Mark Brown

Merge branches 'regmap-core', 'regmap-mmio' and 'regmap-naming' into regmap-stride

2012-04-10T10:01:07+00:00

regmap: allow regmap instances to be named

2012-04-10T09:31:41+00:00

Some devices have multiple separate register regions. Logically, one regmap would be created per region. One issue that prevents this is that each instance will attempt to create the same debugfs files. Avoid this by allowing regmaps to be named, and use the name to construct the debugfs directory name. Signed-off-by: Stephen Warren Signed-off-by: Mark Brown

regmap: add MMIO bus support

2012-04-06T09:47:35+00:00

This is a basic memory-mapped-IO bus for regmap. It has the following features and limitations: * Registers themselves may be 8, 16, 32, or 64-bit. 64-bit is only supported on 64-bit platforms. * Register offsets are limited to precisely 32-bit. * IO is performed using readl/writel, with no provision for using the __raw_readl or readl_relaxed variants. Signed-off-by: Stephen Warren Signed-off-by: Mark Brown

regmap: introduce fast_io busses, and use a spinlock for them

2012-04-06T09:47:34+00:00

Some bus types have very fast IO. For these, acquiring a mutex for every IO operation is a significant overhead. Allow busses to indicate their IO is fast, and enhance regmap to use a spinlock for those busses. [Currently limited to native endian registers -- broonie] Signed-off-by: Stephen Warren Signed-off-by: Mark Brown