None of the chips has a ACK register. The code brainlessly fiddles
with the enable register, so it might even reenable a disabled
interrupt at least on spear300.
Signed-off-by: Thomas Gleixner <t...@linutronix.de>
---
drivers/irqchip/spear-shirq.c | 35 +----------------------------------
1 file changed, 1 insertion(+), 34 deletions(-)
Index: linux/drivers/irqchip/spear-shirq.c
===================================================================
--- linux.orig/drivers/irqchip/spear-shirq.c
+++ linux/drivers/irqchip/spear-shirq.c
@@ -33,15 +33,11 @@
* reset_to_enb: val 1 indicates, we need to clear bit for enabling interrupt
* status_reg: status register offset
* status_reg_mask: status register valid mask
- * clear_reg: clear register offset
- * reset_to_clear: val 1 indicates, we need to clear bit for clearing interrupt
*/
struct shirq_regs {
u32 enb_reg;
u32 reset_to_enb;
u32 status_reg;
- u32 clear_reg;
- u32 reset_to_clear;
};
/*
@@ -78,7 +74,6 @@ static struct spear_shirq spear300_shirq
.regs = {
.enb_reg = SPEAR300_INT_ENB_MASK_REG,
.status_reg = SPEAR300_INT_STS_MASK_REG,
- .clear_reg = -1,
},
};
@@ -96,7 +91,6 @@ static struct spear_shirq spear310_shirq
.regs = {
.enb_reg = -1,
.status_reg = SPEAR310_INT_STS_MASK_REG,
- .clear_reg = -1,
},
};
@@ -107,7 +101,6 @@ static struct spear_shirq spear310_shirq
.regs = {
.enb_reg = -1,
.status_reg = SPEAR310_INT_STS_MASK_REG,
- .clear_reg = -1,
},
};
@@ -118,7 +111,6 @@ static struct spear_shirq spear310_shirq
.regs = {
.enb_reg = -1,
.status_reg = SPEAR310_INT_STS_MASK_REG,
- .clear_reg = -1,
},
};
@@ -129,7 +121,6 @@ static struct spear_shirq spear310_shirq
.regs = {
.enb_reg = -1,
.status_reg = SPEAR310_INT_STS_MASK_REG,
- .clear_reg = -1,
},
};
@@ -150,13 +141,6 @@ static struct spear_shirq spear320_shirq
.nr_irqs = 7,
.mask = ((0x1 << 7) - 1) << 0,
.disabled = 1,
- .regs = {
- .enb_reg = SPEAR320_INT_ENB_MASK_REG,
- .reset_to_enb = 1,
- .status_reg = SPEAR320_INT_STS_MASK_REG,
- .clear_reg = SPEAR320_INT_CLR_MASK_REG,
- .reset_to_clear = 1,
- },
};
static struct spear_shirq spear320_shirq_ras1 = {
@@ -166,8 +150,6 @@ static struct spear_shirq spear320_shirq
.regs = {
.enb_reg = -1,
.status_reg = SPEAR320_INT_STS_MASK_REG,
- .clear_reg = SPEAR320_INT_CLR_MASK_REG,
- .reset_to_clear = 1,
},
};
@@ -178,8 +160,6 @@ static struct spear_shirq spear320_shirq
.regs = {
.enb_reg = -1,
.status_reg = SPEAR320_INT_STS_MASK_REG,
- .clear_reg = SPEAR320_INT_CLR_MASK_REG,
- .reset_to_clear = 1,
},
};
@@ -190,8 +170,6 @@ static struct spear_shirq spear320_shirq
.regs = {
.enb_reg = -1,
.status_reg = SPEAR320_INT_STS_MASK_REG,
- .clear_reg = SPEAR320_INT_CLR_MASK_REG,
- .reset_to_clear = 1,
},
};
@@ -246,7 +224,7 @@ static void shirq_handler(unsigned irq,
struct spear_shirq *shirq = irq_get_handler_data(irq);
struct irq_data *idata = irq_desc_get_irq_data(desc);
struct irq_chip *chip = irq_data_get_irq_chip(idata);
- u32 i, j, val, mask, tmp;
+ u32 i, j, val, mask;
chip->irq_ack(idata);
@@ -261,17 +239,6 @@ static void shirq_handler(unsigned irq,
continue;
generic_handle_irq(shirq->virq_base + i);
-
- /* clear interrupt */
- if (shirq->regs.clear_reg == -1)
- continue;
-
- tmp = readl(shirq->base + shirq->regs.clear_reg);
- if (shirq->regs.reset_to_clear)
- tmp &= ~(j << shirq->offset);
- else
- tmp |= (j << shirq->offset);
- writel(tmp, shirq->base + shirq->regs.clear_reg);
}
}
chip->irq_unmask(idata);
--
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