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mmc: sh_mmcif: revision-specific Command Completion Signal handling

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Some earlier MMCIF IP revisions contained Command Completion Signal
support, which has been dropped again in modern versions. Sopport for
this feature is added in a way to preserve the current behaviour by
default, i.e. when it is not enabled in platform data. Patch is based
on work by Nobuyuki HIRAI.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Guennadi Liakhovetski
2013-07-10 21:21:12 +02:00
committed by Chris Ball
parent acd6d772a0
commit 967bcb7717
2 changed files with 22 additions and 6 deletions
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include/linux/mmc/sh_mmcif.h
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@@ -36,6 +36,7 @@ struct sh_mmcif_plat_data {
unsigned int slave_id_tx; /* embedded slave_id_[tr]x */
unsigned int slave_id_rx;
bool use_cd_gpio : 1;
bool ccs_unsupported : 1;
unsigned int cd_gpio;
u8 sup_pclk; /* 1 :SH7757, 0: SH7724/SH7372 */
unsigned long caps;