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MLK-16136-9 irqchip: imx-irqsteer: adjust irq config via 'endian'.

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Change the irq configurations with adding endianness
determination for different platforms which may choose
different kinds of endianess.

Signed-off-by: Fancy Fang <chen.fang@nxp.com>
This commit is contained in:
Fancy Fang
2017-08-04 18:33:44 +08:00
committed by Nitin Garg
parent 75a65a69e8
commit a2e6a78334
1 changed files with 13 additions and 3 deletions
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16
drivers/irqchip/irq-imx-irqsteer.c
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@ -31,6 +31,7 @@ struct irqsteer_irqchip_data {
struct clk *ipg_clk;
int irq;
int channum;
int endian; /* 0: littel endian; 1: big endian */
struct irq_domain *domain;
unsigned int irqstat[];
};
@ -42,7 +43,8 @@ static void imx_irqsteer_irq_unmask(struct irq_data *d)
u32 val, idx;
spin_lock(&irqsteer_data->lock);
idx = d->hwirq / 32;
idx = irqsteer_data->endian ? (irqsteer_data->channum - d->hwirq / 32 - 1) :
d->hwirq / 32;
reg = irqsteer_data->regs + CHANMASK(idx);
val = readl_relaxed(reg);
val |= 1 << (d->hwirq % 32);
@ -111,7 +113,9 @@ static void imx_irqsteer_update_irqstat(struct irqsteer_irqchip_data *irqsteer_d
*/
for (i = 0; i < irqsteer_data->channum; i++)
irqsteer_data->irqstat[i] = readl_relaxed(irqsteer_data->regs +
CHANSTATUS(i));
CHANSTATUS(irqsteer_data->endian ?
(irqsteer_data->channum - i - 1) :
i));
}
static void imx_irqsteer_irq_handler(struct irq_desc *desc)
@ -145,13 +149,18 @@ static int imx_irqsteer_probe(struct platform_device *pdev)
struct device_node *np = pdev->dev.of_node;
struct irqsteer_irqchip_data *irqsteer_data;
struct resource *res;
int channum;
int channum, endian;
int ret;
ret = of_property_read_u32(np, "nxp,irqsteer_chans", &channum);
if (ret)
channum = 1;
ret = of_property_read_u32(np, "nxp,endian", &endian);
if (ret)
/* default is LSB */
endian = 0;
irqsteer_data = devm_kzalloc(&pdev->dev, sizeof(*irqsteer_data) +
channum *
sizeof(irqsteer_data->irqstat[0]),
@ -181,6 +190,7 @@ static int imx_irqsteer_probe(struct platform_device *pdev)
}
irqsteer_data->channum = channum;
irqsteer_data->endian = endian;
irqsteer_data->pdev = pdev;
spin_lock_init(&irqsteer_data->lock);