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mmc: at91_mci: introduce per-mci-revision conditional code 

We used to manage features and differences on a per-cpu basis.  As several
cpus share the same mci revision, this patch aggregates cpus that have the
same IP revision in one defined constant.  We use the
at91mci_is_mci1rev2xx() funtion name not to mess with newer Atmel sd/mmc
IP called "MCI2".  _rev2 naming could have been confusing...

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Wolfgang Muees <wolfgang.mues@auerswald.de>
Cc: Andrew Victor <avictor.za@gmail.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Nicolas Ferre 2010-03-05 13:43:44 -08:00 committed by Linus Torvalds
parent 541e7ef039
commit 5b27a1a566
1 changed files with 19 additions and 8 deletions
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27
drivers/mmc/host/at91_mci.c
View File

@ -78,6 +78,17 @@
#define DRIVER_NAME "at91_mci"
static inline int at91mci_is_mci1rev2xx(void)
{
return ( cpu_is_at91sam9260()
|| cpu_is_at91sam9263()
|| cpu_is_at91cap9()
|| cpu_is_at91sam9rl()
|| cpu_is_at91sam9g10()
|| cpu_is_at91sam9g20()
);
}
#define FL_SENT_COMMAND (1 << 0)
#define FL_SENT_STOP (1 << 1)
@ -204,8 +215,8 @@ static inline void at91_mci_sg_to_dma(struct at91mci_host *host, struct mmc_data
size = data->blksz * data->blocks;
len = data->sg_len;
/* AT91SAM926[0/3] Data Write Operation and number of bytes erratum */
if (cpu_is_at91sam9260() || cpu_is_at91sam9263())
/* MCI1 rev2xx Data Write Operation and number of bytes erratum */
if (at91mci_is_mci1rev2xx())
if (host->total_length == 12)
memset(dmabuf, 0, 12);
@ -398,7 +409,7 @@ static void at91_mci_enable(struct at91mci_host *host)
at91_mci_write(host, AT91_MCI_DTOR, AT91_MCI_DTOMUL_1M | AT91_MCI_DTOCYC);
mr = AT91_MCI_PDCMODE | 0x34a;
if (cpu_is_at91sam9260() || cpu_is_at91sam9263())
if (at91mci_is_mci1rev2xx())
mr |= AT91_MCI_RDPROOF | AT91_MCI_WRPROOF;
at91_mci_write(host, AT91_MCI_MR, mr);
@ -555,10 +566,10 @@ static void at91_mci_send_command(struct at91mci_host *host, struct mmc_command
*/
host->total_length = block_length * blocks;
/*
* AT91SAM926[0/3] Data Write Operation and
* MCI1 rev2xx Data Write Operation and
* number of bytes erratum
*/
if (cpu_is_at91sam9260 () || cpu_is_at91sam9263())
if (at91mci_is_mci1rev2xx())
if (host->total_length < 12)
host->total_length = 12;
@ -943,7 +954,7 @@ static int __init at91_mci_probe(struct platform_device *pdev)
host->bus_mode = 0;
host->board = pdev->dev.platform_data;
if (host->board->wire4) {
if (cpu_is_at91sam9260() || cpu_is_at91sam9263())
if (at91mci_is_mci1rev2xx())
mmc->caps |= MMC_CAP_4_BIT_DATA;
else
dev_warn(&pdev->dev, "4 wire bus mode not supported"
@ -959,8 +970,8 @@ static int __init at91_mci_probe(struct platform_device *pdev)
}
/* Add SDIO capability when available */
if (cpu_is_at91sam9260() || cpu_is_at91sam9263()) {
/* AT91SAM9260/9263 erratum */
if (at91mci_is_mci1rev2xx()) {
/* at91mci MCI1 rev2xx sdio interrupt erratum */
if (host->board->wire4 || !host->board->slot_b)
mmc->caps |= MMC_CAP_SDIO_IRQ;
}