Hi,
Some nits below. Overall looks good.
On Tue, Oct 11, 2011 at 02:23:57PM -0600, Stephen Warren wrote:
> @@ -76,16 +75,20 @@ struct tegra_gpio_bank {
> };
>
>
> -static struct tegra_gpio_bank tegra_gpio_banks[] = {
> - {.bank = 0, .irq = INT_GPIO1},
> - {.bank = 1, .irq = INT_GPIO2},
> - {.bank = 2, .irq = INT_GPIO3},
> - {.bank = 3, .irq = INT_GPIO4},
> - {.bank = 4, .irq = INT_GPIO5},
> - {.bank = 5, .irq = INT_GPIO6},
> - {.bank = 6, .irq = INT_GPIO7},
> +void __iomem *regs;
Should be static.
> +static struct tegra_gpio_bank tegra_gpio_banks[7] = {
> };
Can be on the same line as the rest, i.e. ... = { };
> +static inline void tegra_gpio_writel(u32 val, u32 reg)
> +{
> + __raw_writel(val, regs + reg);
> +}
> +
> +static inline u32 tegra_gpio_readl(u32 reg)
> +{
> + return __raw_readl(regs + reg);
> +}
> +
> static int tegra_gpio_compose(int bank, int port, int bit)
> {
> return (bank << 5) | ((port & 0x3) << 3) | (bit & 0x7);
[...]
> @@ -333,28 +336,55 @@ static struct irq_chip tegra_gpio_irq_chip = {
> */
> static struct lock_class_key gpio_lock_class;
>
> -static int __init tegra_gpio_init(void)
> +static int __init tegra_gpio_probe(struct platform_device *pdev)
> {
> + struct resource *res;
> struct tegra_gpio_bank *bank;
> int gpio;
> int i;
> int j;
>
> + for (i = 0; i < ARRAY_SIZE(tegra_gpio_banks); i++) {
> + res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
> + if (!res) {
> + dev_err(&pdev->dev, "Missing IRQ resource\n");
> + return -ENODEV;
> + }
> +
> + bank = &tegra_gpio_banks[i];
> + bank->bank = i;
> + bank->irq = res->start;
> + }
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + if (!res) {
> + dev_err(&pdev->dev, "Missing MEM resource\n");
> + return -ENODEV;
> + }
> +
> + if (!devm_request_mem_region(&pdev->dev, res->start,
> + resource_size(res),
> + dev_name(&pdev->dev))) {
> + dev_err(&pdev->dev, "Couldn't request MEM resource\n");
> + return -ENODEV;
> + }
> +
> + regs = devm_ioremap(&pdev->dev, res->start, resource_size(res));
> + if (!regs) {
> + dev_err(&pdev->dev, "Couldn't ioremap regs\n");
> + return -ENODEV;
Should you release the mem region requested above here?
-Olof
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