Make existing field b_max field in struct mmc unconditional
and use it instead of CONFIG_SYS_MMC_MAX_BLK_COUNT in mmc_bread
and mmc_bwrite.
Initialize b_max to CONFIG_SYS_MMC_MAX_BLK_COUNT in mmc_register
if it has not been initialized by the hw driver.
Initialize b_max to 1 in omap_hsmmc.c for old rev silicon OMAP3
to disable multi block rw.
Signed-off-by: John Rigby <john.ri...@linaro.org>
---
drivers/mmc/mmc.c | 8 ++++----
drivers/mmc/omap_hsmmc.c | 8 ++++++++
include/mmc.h | 2 --
3 files changed, 12 insertions(+), 6 deletions(-)
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index f27b7c7..f6d31f5 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -243,8 +243,7 @@ mmc_bwrite(int dev_num, ulong start, lbaint_t blkcnt, const
void*src)
return 0;
do {
- cur = (blocks_todo > CONFIG_SYS_MMC_MAX_BLK_COUNT) ?
- CONFIG_SYS_MMC_MAX_BLK_COUNT : blocks_todo;
+ cur = (blocks_todo > mmc->b_max) ? mmc->b_max : blocks_todo;
if(mmc_write_blocks(mmc, start, cur, src) != cur)
return 0;
blocks_todo -= cur;
@@ -320,8 +319,7 @@ static ulong mmc_bread(int dev_num, ulong start, lbaint_t
blkcnt, void *dst)
return 0;
do {
- cur = (blocks_todo > CONFIG_SYS_MMC_MAX_BLK_COUNT) ?
- CONFIG_SYS_MMC_MAX_BLK_COUNT : blocks_todo;
+ cur = (blocks_todo > mmc->b_max) ? mmc->b_max : blocks_todo;
if(mmc_read_blocks(mmc, dst, start, cur) != cur)
return 0;
blocks_todo -= cur;
@@ -1029,6 +1027,8 @@ int mmc_register(struct mmc *mmc)
mmc->block_dev.removable = 1;
mmc->block_dev.block_read = mmc_bread;
mmc->block_dev.block_write = mmc_bwrite;
+ if (!mmc->b_max)
+ mmc->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
INIT_LIST_HEAD (&mmc->link);
diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c
index 6f2280a..1fab249 100644
--- a/drivers/mmc/omap_hsmmc.c
+++ b/drivers/mmc/omap_hsmmc.c
@@ -465,6 +465,14 @@ int omap_mmc_init(int dev_index)
mmc->f_min = 400000;
mmc->f_max = 52000000;
+#if defined(CONFIG_OMAP34XX)
+ /*
+ * Silicon revs 2.1 and older do not support multiblock transfers.
+ */
+ if (get_cpu_rev() <= CPU_3XX_ES21)
+ mmc->b_max = 1;
+#endif
+
mmc_register(mmc);
return 0;
diff --git a/include/mmc.h b/include/mmc.h
index e0a56d9..b4197a7 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -283,9 +283,7 @@ struct mmc {
struct mmc_cmd *cmd, struct mmc_data *data);
void (*set_ios)(struct mmc *mmc);
int (*init)(struct mmc *mmc);
-#ifdef CONFIG_MMC_MBLOCK
uint b_max;
-#endif
};
int mmc_register(struct mmc *mmc);
--
1.7.1
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