From mboxrd@z Thu Jan 1 00:00:00 1970 From: haojian.zhuang@marvell.com (Haojian Zhuang) Date: Wed, 27 Jan 2010 08:49:12 -0500 Subject: [PATCH] mmp2: add handling on PMIC IRQ Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Since PMIC INT pin is a special pin of CPU, the status of PMIC INT pin needs to be cleared after PMIC IRQ occured. Now append the clear operation in irq chip handler. Signed-off-by: Haojian Zhuang --- arch/arm/mach-mmp/irq-mmp2.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-mmp/irq-mmp2.c b/arch/arm/mach-mmp/irq-mmp2.c index 41b29f6..761abe3 100644 --- a/arch/arm/mach-mmp/irq-mmp2.c +++ b/arch/arm/mach-mmp/irq-mmp2.c @@ -62,7 +62,9 @@ static void _name_##_unmask_irq(unsigned int irq) \ static void _name_##_irq_demux(unsigned int irq, struct irq_desc *desc) \ { \ unsigned long status, mask, n; \ + unsigned long mfpr_pmic, data; \ mask = __raw_readl(prefix##_MASK); \ + mfpr_pmic = APB_VIRT_BASE + 0x1e000 + 0x2c4; \ while (1) { \ status = __raw_readl(prefix##_STATUS) & ~mask; \ if (status == 0) \ @@ -70,6 +72,11 @@ static void _name_##_irq_demux(unsigned int irq, struct irq_desc *desc) \ n = find_first_bit(&status, BITS_PER_LONG); \ while (n < BITS_PER_LONG) { \ generic_handle_irq(irq_base + n); \ + if ((irq_base + n) == IRQ_MMP2_PMIC) { \ + data = __raw_readl(mfpr_pmic); \ + __raw_writel(data | (1 << 6), mfpr_pmic); \ + __raw_writel(data, mfpr_pmic); \ + } \ n = find_next_bit(&status, BITS_PER_LONG, n+1); \ } \ } \ -- 1.5.6.5