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@@ -29,8 +29,9 @@
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struct at91_gpio_chip {
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struct at91_gpio_chip {
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struct gpio_chip chip;
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struct gpio_chip chip;
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struct at91_gpio_chip *next; /* Bank sharing same clock */
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struct at91_gpio_chip *next; /* Bank sharing same clock */
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- struct at91_gpio_bank *bank; /* Bank definition */
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+ int id; /* ID of register bank */
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void __iomem *regbase; /* Base of register bank */
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void __iomem *regbase; /* Base of register bank */
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+ struct clk *clock; /* associated clock */
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};
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};
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#define to_at91_gpio_chip(c) container_of(c, struct at91_gpio_chip, chip)
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#define to_at91_gpio_chip(c) container_of(c, struct at91_gpio_chip, chip)
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@@ -58,18 +59,17 @@ static int at91_gpiolib_direction_input(struct gpio_chip *chip,
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}
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}
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static struct at91_gpio_chip gpio_chip[] = {
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static struct at91_gpio_chip gpio_chip[] = {
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- AT91_GPIO_CHIP("A", 0x00 + PIN_BASE, 32),
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- AT91_GPIO_CHIP("B", 0x20 + PIN_BASE, 32),
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- AT91_GPIO_CHIP("C", 0x40 + PIN_BASE, 32),
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- AT91_GPIO_CHIP("D", 0x60 + PIN_BASE, 32),
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- AT91_GPIO_CHIP("E", 0x80 + PIN_BASE, 32),
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+ AT91_GPIO_CHIP("pioA", 0x00, 32),
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+ AT91_GPIO_CHIP("pioB", 0x20, 32),
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+ AT91_GPIO_CHIP("pioC", 0x40, 32),
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+ AT91_GPIO_CHIP("pioD", 0x60, 32),
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+ AT91_GPIO_CHIP("pioE", 0x80, 32),
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};
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};
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static int gpio_banks;
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static int gpio_banks;
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static inline void __iomem *pin_to_controller(unsigned pin)
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static inline void __iomem *pin_to_controller(unsigned pin)
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{
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{
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- pin -= PIN_BASE;
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pin /= 32;
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pin /= 32;
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if (likely(pin < gpio_banks))
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if (likely(pin < gpio_banks))
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return gpio_chip[pin].regbase;
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return gpio_chip[pin].regbase;
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@@ -79,7 +79,6 @@ static inline void __iomem *pin_to_controller(unsigned pin)
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static inline unsigned pin_to_mask(unsigned pin)
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static inline unsigned pin_to_mask(unsigned pin)
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{
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{
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- pin -= PIN_BASE;
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return 1 << (pin % 32);
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return 1 << (pin % 32);
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}
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}
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@@ -274,8 +273,9 @@ static u32 backups[MAX_GPIO_BANKS];
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static int gpio_irq_set_wake(struct irq_data *d, unsigned state)
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static int gpio_irq_set_wake(struct irq_data *d, unsigned state)
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{
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{
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- unsigned mask = pin_to_mask(d->irq);
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- unsigned bank = (d->irq - PIN_BASE) / 32;
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+ unsigned pin = irq_to_gpio(d->irq);
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+ unsigned mask = pin_to_mask(pin);
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+ unsigned bank = pin / 32;
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if (unlikely(bank >= MAX_GPIO_BANKS))
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if (unlikely(bank >= MAX_GPIO_BANKS))
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return -EINVAL;
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return -EINVAL;
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@@ -285,7 +285,7 @@ static int gpio_irq_set_wake(struct irq_data *d, unsigned state)
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else
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else
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wakeups[bank] &= ~mask;
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wakeups[bank] &= ~mask;
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- irq_set_irq_wake(gpio_chip[bank].bank->id, state);
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+ irq_set_irq_wake(gpio_chip[bank].id, state);
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return 0;
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return 0;
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}
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}
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@@ -302,7 +302,7 @@ void at91_gpio_suspend(void)
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__raw_writel(wakeups[i], pio + PIO_IER);
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__raw_writel(wakeups[i], pio + PIO_IER);
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if (!wakeups[i])
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if (!wakeups[i])
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- clk_disable(gpio_chip[i].bank->clock);
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+ clk_disable(gpio_chip[i].clock);
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else {
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else {
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#ifdef CONFIG_PM_DEBUG
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#ifdef CONFIG_PM_DEBUG
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printk(KERN_DEBUG "GPIO-%c may wake for %08x\n", 'A'+i, wakeups[i]);
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printk(KERN_DEBUG "GPIO-%c may wake for %08x\n", 'A'+i, wakeups[i]);
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@@ -319,7 +319,7 @@ void at91_gpio_resume(void)
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void __iomem *pio = gpio_chip[i].regbase;
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void __iomem *pio = gpio_chip[i].regbase;
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if (!wakeups[i])
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if (!wakeups[i])
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- clk_enable(gpio_chip[i].bank->clock);
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+ clk_enable(gpio_chip[i].clock);
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__raw_writel(wakeups[i], pio + PIO_IDR);
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__raw_writel(wakeups[i], pio + PIO_IDR);
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__raw_writel(backups[i], pio + PIO_IER);
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__raw_writel(backups[i], pio + PIO_IER);
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@@ -344,8 +344,9 @@ void at91_gpio_resume(void)
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static void gpio_irq_mask(struct irq_data *d)
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static void gpio_irq_mask(struct irq_data *d)
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{
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{
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- void __iomem *pio = pin_to_controller(d->irq);
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- unsigned mask = pin_to_mask(d->irq);
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+ unsigned pin = irq_to_gpio(d->irq);
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+ void __iomem *pio = pin_to_controller(pin);
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+ unsigned mask = pin_to_mask(pin);
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if (pio)
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if (pio)
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__raw_writel(mask, pio + PIO_IDR);
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__raw_writel(mask, pio + PIO_IDR);
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@@ -353,8 +354,9 @@ static void gpio_irq_mask(struct irq_data *d)
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static void gpio_irq_unmask(struct irq_data *d)
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static void gpio_irq_unmask(struct irq_data *d)
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{
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{
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- void __iomem *pio = pin_to_controller(d->irq);
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- unsigned mask = pin_to_mask(d->irq);
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+ unsigned pin = irq_to_gpio(d->irq);
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+ void __iomem *pio = pin_to_controller(pin);
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+ unsigned mask = pin_to_mask(pin);
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if (pio)
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if (pio)
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__raw_writel(mask, pio + PIO_IER);
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__raw_writel(mask, pio + PIO_IER);
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@@ -382,7 +384,7 @@ static struct irq_chip gpio_irqchip = {
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static void gpio_irq_handler(unsigned irq, struct irq_desc *desc)
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static void gpio_irq_handler(unsigned irq, struct irq_desc *desc)
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{
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{
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- unsigned pin;
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+ unsigned irq_pin;
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struct irq_data *idata = irq_desc_get_irq_data(desc);
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struct irq_data *idata = irq_desc_get_irq_data(desc);
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struct irq_chip *chip = irq_data_get_irq_chip(idata);
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struct irq_chip *chip = irq_data_get_irq_chip(idata);
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struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(idata);
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struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(idata);
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@@ -405,12 +407,12 @@ static void gpio_irq_handler(unsigned irq, struct irq_desc *desc)
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continue;
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continue;
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}
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}
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- pin = at91_gpio->chip.base;
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+ irq_pin = gpio_to_irq(at91_gpio->chip.base);
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while (isr) {
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while (isr) {
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if (isr & 1)
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if (isr & 1)
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- generic_handle_irq(pin);
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- pin++;
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+ generic_handle_irq(irq_pin);
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+ irq_pin++;
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isr >>= 1;
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isr >>= 1;
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}
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}
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}
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}
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@@ -438,7 +440,7 @@ static int at91_gpio_show(struct seq_file *s, void *unused)
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seq_printf(s, "%i:\t", j);
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seq_printf(s, "%i:\t", j);
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for (bank = 0; bank < gpio_banks; bank++) {
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for (bank = 0; bank < gpio_banks; bank++) {
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- unsigned pin = PIN_BASE + (32 * bank) + j;
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+ unsigned pin = (32 * bank) + j;
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void __iomem *pio = pin_to_controller(pin);
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void __iomem *pio = pin_to_controller(pin);
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unsigned mask = pin_to_mask(pin);
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unsigned mask = pin_to_mask(pin);
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@@ -491,27 +493,28 @@ static struct lock_class_key gpio_lock_class;
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*/
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*/
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void __init at91_gpio_irq_setup(void)
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void __init at91_gpio_irq_setup(void)
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{
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{
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- unsigned pioc, pin;
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+ unsigned pioc, irq = gpio_to_irq(0);
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struct at91_gpio_chip *this, *prev;
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struct at91_gpio_chip *this, *prev;
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- for (pioc = 0, pin = PIN_BASE, this = gpio_chip, prev = NULL;
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+ for (pioc = 0, this = gpio_chip, prev = NULL;
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pioc++ < gpio_banks;
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pioc++ < gpio_banks;
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prev = this, this++) {
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prev = this, this++) {
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- unsigned id = this->bank->id;
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+ unsigned id = this->id;
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unsigned i;
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unsigned i;
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__raw_writel(~0, this->regbase + PIO_IDR);
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__raw_writel(~0, this->regbase + PIO_IDR);
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- for (i = 0, pin = this->chip.base; i < 32; i++, pin++) {
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- irq_set_lockdep_class(pin, &gpio_lock_class);
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+ for (i = 0, irq = gpio_to_irq(this->chip.base); i < 32;
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+ i++, irq++) {
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+ irq_set_lockdep_class(irq, &gpio_lock_class);
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/*
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/*
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* Can use the "simple" and not "edge" handler since it's
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* Can use the "simple" and not "edge" handler since it's
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* shorter, and the AIC handles interrupts sanely.
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* shorter, and the AIC handles interrupts sanely.
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*/
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*/
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- irq_set_chip_and_handler(pin, &gpio_irqchip,
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+ irq_set_chip_and_handler(irq, &gpio_irqchip,
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handle_simple_irq);
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handle_simple_irq);
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- set_irq_flags(pin, IRQF_VALID);
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+ set_irq_flags(irq, IRQF_VALID);
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}
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}
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/* The toplevel handler handles one bank of GPIOs, except
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/* The toplevel handler handles one bank of GPIOs, except
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@@ -524,7 +527,7 @@ void __init at91_gpio_irq_setup(void)
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irq_set_chip_data(id, this);
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irq_set_chip_data(id, this);
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irq_set_chained_handler(id, gpio_irq_handler);
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irq_set_chained_handler(id, gpio_irq_handler);
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}
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}
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- pr_info("AT91: %d gpio irqs in %d banks\n", pin - PIN_BASE, gpio_banks);
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+ pr_info("AT91: %d gpio irqs in %d banks\n", irq - gpio_to_irq(0), gpio_banks);
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}
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}
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/* gpiolib support */
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/* gpiolib support */
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@@ -612,16 +615,26 @@ void __init at91_gpio_init(struct at91_gpio_bank *data, int nr_banks)
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for (i = 0; i < nr_banks; i++) {
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for (i = 0; i < nr_banks; i++) {
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at91_gpio = &gpio_chip[i];
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at91_gpio = &gpio_chip[i];
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- at91_gpio->bank = &data[i];
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- at91_gpio->chip.base = PIN_BASE + i * 32;
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- at91_gpio->regbase = at91_gpio->bank->offset +
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- (void __iomem *)AT91_VA_BASE_SYS;
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+ at91_gpio->id = data[i].id;
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+ at91_gpio->chip.base = i * 32;
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+
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+ at91_gpio->regbase = ioremap(data[i].regbase, 512);
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+ if (!at91_gpio->regbase) {
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+ pr_err("at91_gpio.%d, failed to map registers, ignoring.\n", i);
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+ continue;
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+ }
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+
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+ at91_gpio->clock = clk_get_sys(NULL, at91_gpio->chip.label);
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+ if (!at91_gpio->clock) {
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+ pr_err("at91_gpio.%d, failed to get clock, ignoring.\n", i);
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+ continue;
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+ }
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/* enable PIO controller's clock */
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/* enable PIO controller's clock */
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- clk_enable(at91_gpio->bank->clock);
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+ clk_enable(at91_gpio->clock);
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/* AT91SAM9263_ID_PIOCDE groups PIOC, PIOD, PIOE */
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/* AT91SAM9263_ID_PIOCDE groups PIOC, PIOD, PIOE */
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- if (last && last->bank->id == at91_gpio->bank->id)
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+ if (last && last->id == at91_gpio->id)
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last->next = at91_gpio;
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last->next = at91_gpio;
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last = at91_gpio;
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last = at91_gpio;
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