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| author | Marc Pignat <marc.pignat@hevs.ch> | 2008-05-30 14:05:24 +0200 |
|---|---|---|
| committer | Pierre Ossman <drzeus@drzeus.cx> | 2008-07-15 14:14:41 +0200 |
| commit | 80f9254668c63ae73c1359d8de50ad94aa1aa94a (patch) | |
| tree | d80330908a3ed0ea65df5c343184a5ee1d63efd5 | |
| parent | 8769392b1918ec70ab62eebc82e06c47c12f8304 (diff) | |
| download | blackbird-op-linux-80f9254668c63ae73c1359d8de50ad94aa1aa94a.tar.gz blackbird-op-linux-80f9254668c63ae73c1359d8de50ad94aa1aa94a.zip | |
mmc: at91_mci: support for block size not modulo 4
Implement transfer with size not modulo 4 for at91sam9*. Please note that the
at91rm9200 simply can't handle this.
Signed-off-by: Marc Pignat <marc.pignat@hevs.ch>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| -rw-r--r-- | drivers/mmc/host/at91_mci.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c index b9d4ed6b29b1..e40340f32e35 100644 --- a/drivers/mmc/host/at91_mci.c +++ b/drivers/mmc/host/at91_mci.c @@ -233,11 +233,11 @@ static void at91_mci_pre_dma_read(struct at91mci_host *host) if (i == 0) { at91_mci_write(host, ATMEL_PDC_RPR, sg->dma_address); - at91_mci_write(host, ATMEL_PDC_RCR, sg->length / 4); + at91_mci_write(host, ATMEL_PDC_RCR, (data->blksz & 0x3) ? sg->length : sg->length / 4); } else { at91_mci_write(host, ATMEL_PDC_RNPR, sg->dma_address); - at91_mci_write(host, ATMEL_PDC_RNCR, sg->length / 4); + at91_mci_write(host, ATMEL_PDC_RNCR, (data->blksz & 0x3) ? sg->length : sg->length / 4); } } @@ -430,7 +430,7 @@ static void at91_mci_send_command(struct at91mci_host *host, struct mmc_command if (data) { - if ( data->blksz & 0x3 ) { + if ( cpu_is_at91rm9200() && (data->blksz & 0x3) ) { pr_debug("Unsupported block size\n"); cmd->error = -EINVAL; mmc_request_done(host->mmc, host->request); @@ -482,7 +482,10 @@ static void at91_mci_send_command(struct at91mci_host *host, struct mmc_command } else { /* zero block length and PDC mode */ mr = at91_mci_read(host, AT91_MCI_MR) & 0x7fff; - at91_mci_write(host, AT91_MCI_MR, mr | (block_length << 16) | AT91_MCI_PDCMODE); + mr |= (data->blksz & 0x3) ? AT91_MCI_PDCFBYTE : 0; + mr |= (block_length << 16); + mr |= AT91_MCI_PDCMODE; + at91_mci_write(host, AT91_MCI_MR, mr); /* * Disable the PDC controller @@ -517,7 +520,9 @@ static void at91_mci_send_command(struct at91mci_host *host, struct mmc_command pr_debug("Transmitting %d bytes\n", host->total_length); at91_mci_write(host, ATMEL_PDC_TPR, host->physical_address); - at91_mci_write(host, ATMEL_PDC_TCR, host->total_length / 4); + at91_mci_write(host, ATMEL_PDC_TCR, (data->blksz & 0x3) ? + host->total_length : host->total_length / 4); + ier = AT91_MCI_CMDRDY; } } |
