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bcma: fix bcm4716/bcm4748 i2s irqflag 

The default irqflag assignment for the I2S core on some Broadcom
4716/4748 devices is invalid and needs to be corrected (from the
Broadcom SDK).

Signed-off-by: Nathan Hintz <nlhintz@hotmail.com>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Nathan Hintz 2013-01-11 22:07:22 -08:00 committed by John W. Linville
parent e2d4a24e03
commit 6bf2e54614
2 changed files with 29 additions and 0 deletions
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28
drivers/bcma/driver_mips.c
View File

@ -256,6 +256,32 @@ void bcma_core_mips_early_init(struct bcma_drv_mips *mcore)
mcore->early_setup_done = true;
}
static void bcma_fix_i2s_irqflag(struct bcma_bus *bus)
{
struct bcma_device *cpu, *pcie, *i2s;
/* Fixup the interrupts in 4716/4748 for i2s core (2010 Broadcom SDK)
* (IRQ flags > 7 are ignored when setting the interrupt masks)
*/
if (bus->chipinfo.id != BCMA_CHIP_ID_BCM4716 &&
bus->chipinfo.id != BCMA_CHIP_ID_BCM4748)
return;
cpu = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
pcie = bcma_find_core(bus, BCMA_CORE_PCIE);
i2s = bcma_find_core(bus, BCMA_CORE_I2S);
if (cpu && pcie && i2s &&
bcma_aread32(cpu, BCMA_MIPS_OOBSELINA74) == 0x08060504 &&
bcma_aread32(pcie, BCMA_MIPS_OOBSELINA74) == 0x08060504 &&
bcma_aread32(i2s, BCMA_MIPS_OOBSELOUTA30) == 0x88) {
bcma_awrite32(cpu, BCMA_MIPS_OOBSELINA74, 0x07060504);
bcma_awrite32(pcie, BCMA_MIPS_OOBSELINA74, 0x07060504);
bcma_awrite32(i2s, BCMA_MIPS_OOBSELOUTA30, 0x87);
bcma_debug(bus,
"Moved i2s interrupt to oob line 7 instead of 8\n");
}
}
void bcma_core_mips_init(struct bcma_drv_mips *mcore)
{
struct bcma_bus *bus;
@ -269,6 +295,8 @@ void bcma_core_mips_init(struct bcma_drv_mips *mcore)
bcma_core_mips_early_init(mcore);
bcma_fix_i2s_irqflag(bus);
switch (bus->chipinfo.id) {
case BCMA_CHIP_ID_BCM4716:
case BCMA_CHIP_ID_BCM4748:

1
include/linux/bcma/bcma_driver_mips.h
View File

@ -28,6 +28,7 @@
#define BCMA_MIPS_MIPS74K_GPIOEN 0x0048
#define BCMA_MIPS_MIPS74K_CLKCTLST 0x01E0
#define BCMA_MIPS_OOBSELINA74 0x004
#define BCMA_MIPS_OOBSELOUTA30 0x100
struct bcma_device;