redonkable/remarkable-linux
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[MMC] sdhci: support controller specific quirks

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As some specific controllers will have bugs, we need a way to map special
behaviour to certain hardware.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Pierre Ossman 2006-06-30 02:22:31 -07:00 committed by Russell King
parent 6743527441
commit df673b227c
2 changed files with 9 additions and 0 deletions
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7
drivers/mmc/sdhci.c
View file

@ -30,6 +30,7 @@
static unsigned int debug_nodma = 0;
static unsigned int debug_forcedma = 0;
static unsigned int debug_quirks = 0;
static const struct pci_device_id pci_ids[] __devinitdata = {
/* handle any SD host controller */
@ -1373,6 +1374,10 @@ static int __devinit sdhci_probe(struct pci_dev *pdev,
}
chip->pdev = pdev;
chip->quirks = ent->driver_data;
if (debug_quirks)
chip->quirks = debug_quirks;
chip->num_slots = slots;
pci_set_drvdata(pdev, chip);
@ -1453,6 +1458,7 @@ module_exit(sdhci_drv_exit);
module_param(debug_nodma, uint, 0444);
module_param(debug_forcedma, uint, 0444);
module_param(debug_quirks, uint, 0444);
MODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>");
MODULE_DESCRIPTION("Secure Digital Host Controller Interface driver");
@ -1461,3 +1467,4 @@ MODULE_LICENSE("GPL");
MODULE_PARM_DESC(debug_nodma, "Forcefully disable DMA transfers. (default 0)");
MODULE_PARM_DESC(debug_forcedma, "Forcefully enable DMA transfers. (default 0)");
MODULE_PARM_DESC(debug_quirks, "Force certain quirks.");

2
drivers/mmc/sdhci.h
View file

@ -204,6 +204,8 @@ struct sdhci_host {
struct sdhci_chip {
struct pci_dev *pdev;
unsigned long quirks;
int num_slots; /* Slots on controller */
struct sdhci_host *hosts[0]; /* Pointers to hosts */
};