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Commit 541ceb5b authored by Feng Tang's avatar Feng Tang Committed by Pierre Ossman
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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: default avatarFeng Tang <feng.tang@intel.com>
Signed-off-by: default avatarPierre Ossman <drzeus@drzeus.cx>
parent 11b295c8

drivers/mmc/host/sdhci.c

+12 −1
Original line number Diff line number Diff line
@@ -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);

}

drivers/mmc/host/sdhci.h

+1 −0
Original line number Diff line number Diff line
@@ -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 */

};