gpio/mxc: add .to_irq for gpio chip
It adds .to_irq support for gpio chip, so that __gpio_to_irq in gpiolib becomes usable. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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@ -337,6 +337,15 @@ static void __devinit mxc_gpio_get_hw(struct platform_device *pdev)
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mxc_gpio_hwtype = hwtype;
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}
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static int mxc_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
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{
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struct bgpio_chip *bgc = to_bgpio_chip(gc);
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struct mxc_gpio_port *port =
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container_of(bgc, struct mxc_gpio_port, bgc);
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return port->virtual_irq_start + offset;
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}
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static int __devinit mxc_gpio_probe(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node;
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@ -403,6 +412,7 @@ static int __devinit mxc_gpio_probe(struct platform_device *pdev)
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if (err)
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goto out_iounmap;
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port->bgc.gc.to_irq = mxc_gpio_to_irq;
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port->bgc.gc.base = pdev->id * 32;
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port->bgc.dir = port->bgc.read_reg(port->bgc.reg_dir);
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port->bgc.data = port->bgc.read_reg(port->bgc.reg_set);
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