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| author | Nathan Hintz <nlhintz@hotmail.com> | 2013-01-11 22:07:22 -0800 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2013-01-14 15:10:40 -0500 |
| commit | 6bf2e5461479c4511f59946a7378db576b04dbc5 (patch) | |
| tree | 5f0560d8cd248efdaff9d12e2b9c4dec1df32806 /drivers | |
| parent | e2d4a24e03f9f7b255e86a2537dca0927f08af4a (diff) | |
| download | linux-stable-6bf2e5461479c4511f59946a7378db576b04dbc5.tar.gz linux-stable-6bf2e5461479c4511f59946a7378db576b04dbc5.tar.bz2 linux-stable-6bf2e5461479c4511f59946a7378db576b04dbc5.zip | |
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/bcma/driver_mips.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/bcma/driver_mips.c b/drivers/bcma/driver_mips.c index a808404db4b1..9fe86ee16c66 100644 --- a/drivers/bcma/driver_mips.c +++ b/drivers/bcma/driver_mips.c @@ -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: |