gpio: davinci: Add support for multiple GPIO controllers
Update GPIO driver to support Multiple GPIO controllers by updating the base of subsequent GPIO chips with total of previous chips gpio count so that gpio_add_chip gets unique numbers. Signed-off-by: Keerthy <j-keerthy@ti.com> Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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@ -186,7 +186,7 @@ static int davinci_gpio_of_xlate(struct gpio_chip *gc,
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static int davinci_gpio_probe(struct platform_device *pdev)
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{
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static int ctrl_num;
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static int ctrl_num, bank_base;
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int gpio, bank;
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unsigned ngpio, nbank;
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struct davinci_gpio_controller *chips;
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@ -240,6 +240,7 @@ static int davinci_gpio_probe(struct platform_device *pdev)
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chips->chip.set = davinci_gpio_set;
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chips->chip.ngpio = ngpio;
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chips->chip.base = bank_base;
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#ifdef CONFIG_OF_GPIO
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chips->chip.of_gpio_n_cells = 2;
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@ -248,6 +249,7 @@ static int davinci_gpio_probe(struct platform_device *pdev)
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chips->chip.of_node = dev->of_node;
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#endif
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spin_lock_init(&chips->lock);
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bank_base += ngpio;
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for (gpio = 0, bank = 0; gpio < ngpio; gpio += 32, bank++)
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chips->regs[bank] = gpio_base + offset_array[bank];
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@ -42,6 +42,7 @@ struct davinci_gpio_controller {
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void __iomem *regs[MAX_REGS_BANKS];
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int gpio_unbanked;
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unsigned int base_irq;
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unsigned int base;
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};
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/*
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