diff options
| author | Fancy Fang <chen.fang@nxp.com> | 2017-08-04 18:33:44 +0800 |
|---|---|---|
| committer | Jason Liu <jason.hui.liu@nxp.com> | 2019-02-12 10:27:56 +0800 |
| commit | ed776159eae3ff592527bdfff9cb5cfd8a501643 (patch) | |
| tree | 53a6442a181ce8afba9959f66fdc40f8c71261b6 /drivers/irqchip/irq-imx-irqsteer.c | |
| parent | 2caf24c8652d35d632652e160cd53d0dcd65086d (diff) | |
MLK-16136-9 irqchip: imx-irqsteer: adjust irq config via 'endian'.
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>
Diffstat (limited to 'drivers/irqchip/irq-imx-irqsteer.c')
| -rw-r--r-- | drivers/irqchip/irq-imx-irqsteer.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/irqchip/irq-imx-irqsteer.c b/drivers/irqchip/irq-imx-irqsteer.c index 9727445196d0..27afb237347b 100644 --- a/drivers/irqchip/irq-imx-irqsteer.c +++ b/drivers/irqchip/irq-imx-irqsteer.c @@ -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); |