A number of pins on the imx233 are standard and manually calling
functions to acquire, set function/drive/output is painful. This
will become unmanageable when we will add support for the other
stmp chips.
Introduce the concept of virtual pin which is a way to completely
describe a virtual pin (virtual because pins are muxed).
Change-Id: I01b6e040945648e58e1d1abab06529c9571c5f10
The current pinctrl functions were a mess. Normalise the functions
names to make them shorter and clearer.
Change-Id: Iac6ff84625ef2b7610268e3a5802dc0088de3167
The SD SWITCH command has a result and can take a long time to
finish. Ignoring the answer and waiting an arbitrary time is
unreliable at best.
Change-Id: I1bfbb193952b96598f8bb056bac88220d4edf1fc
The SD driver doesn't initialised drives at the beginning but
upon request to handle removable drives. Since means that the
init should call init_drive() and not init_sd_card() otherwise
the check for WINDOW flag is bypasses. This breaks the zenxfi3
bootloader and has been overlooked for some time.
Change-Id: I7325f7164d16d7e7e54eeb4645e98517a08e0836
Implement cache aligned transfer of more than one sectors. The
current code now transfers almost all data at once by moving
it within the buffer to make it cache aligned. This greatly
improves the performance of the transfers, especially in mass
storage mode.
Change-Id: Ic6e78773302f368426209f6fd6099089ea34cb16
Further merge drivers by using the same command and data functions.
No use one mutex per drive instead of a global sd lock. Fix the
RCA handling which was different between SD and MMC (shifted 16)
and thus confusing. Add MMC commands definition to the mmc.h
header similarly to the SD one. Change MMC handling a bit by
selecting/deselecting on each transfer like SD, which allows
for several MMC devices in theory and is more uniform.
Change-Id: I7024cb19c079553806138ead75b00640f1d2d95c
Merge sd and mmc drivers into a single sdmmc driver. This allows
some factoring of the code and simplify bug fixing. Also fix the
dma/cache related issue by doing all transfers via a correctly
aligned buffer. The current code is not smart enough to take
advantage of large user buffers currently but at least it is safe!
Change-Id: Ib0fd16dc7d52ef7bfe99fd586e03ecf08691edcd
