diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2014-06-20 01:34:41 +0400 |
|---|---|---|
| committer | Jason Cooper <jason@lakedaemon.net> | 2014-06-24 16:37:59 +0400 |
| commit | 4ecc832f4ef25dcb684ca986de3612e881748c0e (patch) | |
| tree | b4f67f2c96c0a6a29f2a9c59d7881c8bb2629aba /drivers/irqchip/spear-shirq.c | |
| parent | e3c871ab232ccc5fd82f76b21b9cae0113f01dc0 (diff) | |
| download | linux-4ecc832f4ef25dcb684ca986de3612e881748c0e.tar.xz | |
irqchip: spear_shirq: Precalculate status mask
Calculate the status mask at compile time, not at runtime.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212713.496614337@linutronix.de
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'drivers/irqchip/spear-shirq.c')
| -rw-r--r-- | drivers/irqchip/spear-shirq.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/irqchip/spear-shirq.c b/drivers/irqchip/spear-shirq.c index 874950c014be..fc57c35a20b4 100644 --- a/drivers/irqchip/spear-shirq.c +++ b/drivers/irqchip/spear-shirq.c @@ -49,6 +49,7 @@ struct shirq_regs { * * base: Base register address * regs: Register configuration for shared irq block + * mask: Mask to apply to the status register * virq_base: Base virtual interrupt number * nr_irqs: Number of interrupts handled by this block * offset: Bit offset of the first interrupt @@ -57,6 +58,7 @@ struct shirq_regs { struct spear_shirq { void __iomem *base; struct shirq_regs regs; + u32 mask; u32 virq_base; u32 nr_irqs; u32 offset; @@ -72,6 +74,7 @@ static DEFINE_SPINLOCK(lock); static struct spear_shirq spear300_shirq_ras1 = { .offset = 0, .nr_irqs = 9, + .mask = ((0x1 << 9) - 1) << 0, .regs = { .enb_reg = SPEAR300_INT_ENB_MASK_REG, .status_reg = SPEAR300_INT_STS_MASK_REG, @@ -89,6 +92,7 @@ static struct spear_shirq *spear300_shirq_blocks[] = { static struct spear_shirq spear310_shirq_ras1 = { .offset = 0, .nr_irqs = 8, + .mask = ((0x1 << 8) - 1) << 0, .regs = { .enb_reg = -1, .status_reg = SPEAR310_INT_STS_MASK_REG, @@ -99,6 +103,7 @@ static struct spear_shirq spear310_shirq_ras1 = { static struct spear_shirq spear310_shirq_ras2 = { .offset = 8, .nr_irqs = 5, + .mask = ((0x1 << 5) - 1) << 8, .regs = { .enb_reg = -1, .status_reg = SPEAR310_INT_STS_MASK_REG, @@ -109,6 +114,7 @@ static struct spear_shirq spear310_shirq_ras2 = { static struct spear_shirq spear310_shirq_ras3 = { .offset = 13, .nr_irqs = 1, + .mask = ((0x1 << 1) - 1) << 13, .regs = { .enb_reg = -1, .status_reg = SPEAR310_INT_STS_MASK_REG, @@ -119,6 +125,7 @@ static struct spear_shirq spear310_shirq_ras3 = { static struct spear_shirq spear310_shirq_intrcomm_ras = { .offset = 14, .nr_irqs = 3, + .mask = ((0x1 << 3) - 1) << 14, .regs = { .enb_reg = -1, .status_reg = SPEAR310_INT_STS_MASK_REG, @@ -141,6 +148,7 @@ static struct spear_shirq *spear310_shirq_blocks[] = { static struct spear_shirq spear320_shirq_ras3 = { .offset = 0, .nr_irqs = 7, + .mask = ((0x1 << 7) - 1) << 0, .disabled = 1, .regs = { .enb_reg = SPEAR320_INT_ENB_MASK_REG, @@ -154,6 +162,7 @@ static struct spear_shirq spear320_shirq_ras3 = { static struct spear_shirq spear320_shirq_ras1 = { .offset = 7, .nr_irqs = 3, + .mask = ((0x1 << 3) - 1) << 7, .regs = { .enb_reg = -1, .status_reg = SPEAR320_INT_STS_MASK_REG, @@ -165,6 +174,7 @@ static struct spear_shirq spear320_shirq_ras1 = { static struct spear_shirq spear320_shirq_ras2 = { .offset = 10, .nr_irqs = 1, + .mask = ((0x1 << 1) - 1) << 10, .regs = { .enb_reg = -1, .status_reg = SPEAR320_INT_STS_MASK_REG, @@ -176,6 +186,7 @@ static struct spear_shirq spear320_shirq_ras2 = { static struct spear_shirq spear320_shirq_intrcomm_ras = { .offset = 11, .nr_irqs = 11, + .mask = ((0x1 << 11) - 1) << 11, .regs = { .enb_reg = -1, .status_reg = SPEAR320_INT_STS_MASK_REG, @@ -239,7 +250,7 @@ static void shirq_handler(unsigned irq, struct irq_desc *desc) chip->irq_ack(idata); - mask = ((0x1 << shirq->nr_irqs) - 1) << shirq->offset; + mask = shirq->mask; while ((val = readl(shirq->base + shirq->regs.status_reg) & mask)) { |