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4 Commits

Author SHA1 Message Date
Simon Glass
1e6ca1a6ad dm: core: Add an implementation of regmap_init_mem_platdata() 
Add an implementation of this function which mirrors the functions of the
automatic device-tree implementation. This can be used with of-platdata to
create regmaps.

Signed-off-by: Simon Glass <sjg@chromium.org>
 2016-07-14 20:40:24 -06:00
Simon Glass
a951431e82 dm: core: Move regmap allocation into a separate function 
We plan to add a new way of creating a regmap for of-platdata. Move the
allocation code into a separate function so that it can be shared.

Signed-off-by: Simon Glass <sjg@chromium.org>
 2016-07-14 20:40:24 -06:00
Simon Glass
3b2a29e097 dm: regmap: Add a dummy implementation for of-platdata 
Add a placeholder for now so that this code will compile. It currently does
nothing.

Signed-off-by: Simon Glass <sjg@chromium.org>
 2016-07-14 20:40:24 -06:00
Simon Glass
6f98b7504f dm: Add support for register maps (regmap) 
Add a simple implementaton of register maps, supporting only direct I/O
for now. This can be enhanced later to support buses which have registers,
such as I2C, SPI and PCI.

It allows drivers which can operate with multiple buses to avoid dealing
with the particulars of register access on that bus.

Signed-off-by: Simon Glass <sjg@chromium.org>
 2015-07-21 17:39:23 -06:00