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sdhci: add num index for multi controllers case 

Some devices have several controllers; need add the index info to
device slot name host->slot_desc[]

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
Feng Tang 2008-01-07 14:29:02 +08:00 committed by Pierre Ossman
parent 11b295c8b2
commit 541ceb5b8b
2 changed files with 13 additions and 1 deletions
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13
drivers/mmc/host/sdhci.c
View File

@ -30,6 +30,10 @@
static unsigned int debug_quirks = 0;
/* For multi controllers in one platform case */
static u16 chip_index = 0;
static spinlock_t index_lock;
/*
* Different quirks to handle when the hardware deviates from a strict
* interpretation of the SDHCI specification.
@ -1320,7 +1324,7 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
DBG("slot %d at 0x%08lx, irq %d\n", slot, host->addr, host->irq);
snprintf(host->slot_descr, 20, "sdhci:slot%d", slot);
snprintf(host->slot_descr, 20, "sdhc%d:slot%d", chip->index, slot);
ret = pci_request_region(pdev, host->bar, host->slot_descr);
if (ret)
@ -1585,6 +1589,11 @@ static int __devinit sdhci_probe(struct pci_dev *pdev,
chip->num_slots = slots;
pci_set_drvdata(pdev, chip);
/* Add for multi controller case */
spin_lock(&index_lock);
chip->index = chip_index++;
spin_unlock(&index_lock);
for (i = 0;i < slots;i++) {
ret = sdhci_probe_slot(pdev, i);
if (ret) {
@ -1645,6 +1654,8 @@ static int __init sdhci_drv_init(void)
": Secure Digital Host Controller Interface driver\n");
printk(KERN_INFO DRIVER_NAME ": Copyright(c) Pierre Ossman\n");
spin_lock_init(&index_lock);
return pci_register_driver(&sdhci_driver);
}

1
drivers/mmc/host/sdhci.h
View File

@ -208,6 +208,7 @@ struct sdhci_chip {
unsigned long quirks;
int index; /* Index for chip0, chip1 ...*/
int num_slots; /* Slots on controller */
struct sdhci_host *hosts[0]; /* Pointers to hosts */
};