Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-24 21:54:01 +00:00
Code Issues Projects Releases Packages Wiki Activity

i.MX: fsl_esdhc: allow use with cache enabled.

Browse source 
Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
This commit is contained in:
Eric Nelson 2012-04-25 14:28:48 +00:00 committed by Andy Fleming
parent 0b15d51ed0
commit e576bd90f9
1 changed files with 16 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
drivers/mmc/fsl_esdhc.c
View file

@ -190,6 +190,10 @@ static int esdhc_setup_data(struct mmc *mmc, struct mmc_data *data)
esdhc_clrsetbits32(&regs->wml, WML_RD_WML_MASK, wml_value);
esdhc_write32(&regs->dsaddr, (u32)data->dest);
} else {
flush_dcache_range((ulong)data->src,
(ulong)data->src+data->blocks
*data->blocksize);
if (wml_value > WML_WR_WML_MAX)
wml_value = WML_WR_WML_MAX_VAL;
if ((esdhc_read32(&regs->prsstat) & PRSSTAT_WPSPL) == 0) {
@ -249,7 +253,15 @@ static int esdhc_setup_data(struct mmc *mmc, struct mmc_data *data)
return 0;
}
static void check_and_invalidate_dcache_range
(struct mmc_cmd *cmd,
struct mmc_data *data) {
unsigned start = (unsigned)data->dest ;
unsigned size = roundup(ARCH_DMA_MINALIGN,
data->blocks*data->blocksize);
unsigned end = start+size ;
invalidate_dcache_range(start, end);
}
/*
* Sends a command out on the bus. Takes the mmc pointer,
* a command pointer, and an optional data pointer.
@ -315,6 +327,9 @@ esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
while (!(esdhc_read32(&regs->irqstat) & (IRQSTAT_CC | IRQSTAT_CTOE)))
;
if (data && (data->flags & MMC_DATA_READ))
check_and_invalidate_dcache_range(cmd, data);
irqstat = esdhc_read32(&regs->irqstat);
esdhc_write32(&regs->irqstat, irqstat);