redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

at91_mci: Cover more AT91RM9200 and AT91SAM9261 errata.

Browse source 
According to the documentation the AT91SAM9261 MCI shares the block size
limitations of the AT91RM9200 MCI. Also the errata documentation for
AT91RM9200 and AT91SAM9261 state that stream commands are not supported.
This has not been tested on actual hardware.

Signed-off-by: Ville Syrjala <syrjala@sci.fi>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
Ville Syrjala 2008-06-09 22:06:44 +03:00 committed by Pierre Ossman
parent 5385edc500
commit 9da3cbaf28
1 changed files with 14 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
drivers/mmc/host/at91_mci.c
View file

@ -520,11 +520,19 @@ static void at91_mci_send_command(struct at91mci_host *host, struct mmc_command
if (data) {
if ( cpu_is_at91rm9200() && (data->blksz & 0x3) ) {
pr_debug("Unsupported block size\n");
cmd->error = -EINVAL;
mmc_request_done(host->mmc, host->request);
return;
if (cpu_is_at91rm9200() || cpu_is_at91sam9261()) {
if (data->blksz & 0x3) {
pr_debug("Unsupported block size\n");
cmd->error = -EINVAL;
mmc_request_done(host->mmc, host->request);
return;
}
if (data->flags & MMC_DATA_STREAM) {
pr_debug("Stream commands not supported\n");
cmd->error = -EINVAL;
mmc_request_done(host->mmc, host->request);
return;
}
}
block_length = data->blksz;
@ -577,7 +585,7 @@ static void at91_mci_send_command(struct at91mci_host *host, struct mmc_command
mr |= AT91_MCI_PDCMODE;
at91_mci_write(host, AT91_MCI_MR, mr);
if (!cpu_is_at91rm9200())
if (!(cpu_is_at91rm9200() || cpu_is_at91sam9261()))
at91_mci_write(host, AT91_MCI_BLKR,
AT91_MCI_BLKR_BCNT(blocks) |
AT91_MCI_BLKR_BLKLEN(block_length));