Save and reconfigure the MERAM registers when the MERAM is powered down
and restored
Signed-off-by: NDamian Hobson-Garcia <dhobsong@igel.co.jp>

There is no reason for sh_mobile_meram_priv to be in the .h file
since it should be private to sh_mobile_meram.c
Signed-off-by: NDamian Hobson-Garcia <dhobsong@igel.co.jp>

Signed-off-by: NDamian Hobson-Garcia <dhobsong@igel.co.jp>

The check was intended to test if we have a valid pointer to write into,
but it mistakenly checks the pointer contents instead.

Since a valid pointer is mandatory for the chroma data if a YCbCr format
is used, the pointer check has been removed.
Signed-off-by: NDamian Hobson-Garcia <dhobsong@igel.co.jp>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Since the NV24 framebuffer has a CbCr plane that is twice as wide
as the Y plane, it needs to be handled as a special case.
Signed-off-by: NDamian Hobson-Garcia <dhobsong@igel.co.jp>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Based on the patch by Takanari Hayama <taki@igel.co.jp>

Adds support framework necessary to use Media RAM (MERAM)
caching functionality with the LCDC.  The MERAM is accessed
through up to 4 Interconnect Buffers (ICBs).

ICB numbers and MERAM address ranges to use are specified in
by filling in the .meram_cfg member of the LCDC platform data
Signed-off-by: NDamian Hobson-Garcia <dhobsong@igel.co.jp>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>