[MMC] sdhci: support controller specific quirks
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>
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 315ab49..27f81e6 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -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 @@
}
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_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_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.");
diff --git a/drivers/mmc/sdhci.h b/drivers/mmc/sdhci.h
index 8111fa3..f245334 100644
--- a/drivers/mmc/sdhci.h
+++ b/drivers/mmc/sdhci.h
@@ -204,6 +204,8 @@
struct sdhci_chip {
struct pci_dev *pdev;
+ unsigned long quirks;
+
int num_slots; /* Slots on controller */
struct sdhci_host *hosts[0]; /* Pointers to hosts */
};
