Return-path: Received: from blu0-omc2-s23.blu0.hotmail.com ([65.55.111.98]:43416 "EHLO blu0-omc2-s23.blu0.hotmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753417Ab3AKGXe (ORCPT ); Fri, 11 Jan 2013 01:23:34 -0500 Message-ID: (sfid-20130111_072337_336216_5EC6EBFB) From: Nathan Hintz To: linville@tuxdriver.com CC: linux-wireless@vger.kernel.org, hauke@hauke-m.de, Nathan Hintz Subject: [PATCH] bcma: fix bcm4716/bcm4748 i2s irqflag Date: Thu, 10 Jan 2013 22:23:17 -0800 MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org List-ID: 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 --- drivers/bcma/driver_mips.c | 28 ++++++++++++++++++++++++++++ include/linux/bcma/bcma_driver_mips.h | 1 + 2 files changed, 29 insertions(+), 0 deletions(-) diff --git a/drivers/bcma/driver_mips.c b/drivers/bcma/driver_mips.c index 8a51c79..cf74858 100644 --- a/drivers/bcma/driver_mips.c +++ b/drivers/bcma/driver_mips.c @@ -250,6 +250,32 @@ 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_info(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; @@ -263,6 +289,8 @@ 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: diff --git a/include/linux/bcma/bcma_driver_mips.h b/include/linux/bcma/bcma_driver_mips.h index 6495579..27e6ee9 100644 --- a/include/linux/bcma/bcma_driver_mips.h +++ b/include/linux/bcma/bcma_driver_mips.h @@ -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; -- 1.7.7.6