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path: root/drivers/gpio/gpio-omap.c
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Diffstat (limited to 'drivers/gpio/gpio-omap.c')
-rw-r--r--drivers/gpio/gpio-omap.c608
1 files changed, 357 insertions, 251 deletions
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index f1fbedb2a6f..00f29aa1fb9 100644
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -24,12 +24,11 @@
#include <linux/pm.h>
#include <linux/of.h>
#include <linux/of_device.h>
-#include <linux/irqdomain.h>
+#include <linux/irqchip/chained_irq.h>
#include <linux/gpio.h>
+#include <linux/bitops.h>
#include <linux/platform_data/gpio-omap.h>
-#include <asm/mach/irq.h>
-
#define OFF_MODE 1
static LIST_HEAD(omap_gpio_list);
@@ -53,8 +52,6 @@ struct gpio_bank {
struct list_head node;
void __iomem *base;
u16 irq;
- int irq_base;
- struct irq_domain *domain;
u32 non_wakeup_gpios;
u32 enabled_non_wakeup_gpios;
struct gpio_regs context;
@@ -65,12 +62,14 @@ struct gpio_bank {
struct gpio_chip chip;
struct clk *dbck;
u32 mod_usage;
+ u32 irq_usage;
u32 dbck_enable_mask;
bool dbck_enabled;
struct device *dev;
bool is_mpuio;
bool dbck_flag;
bool loses_context;
+ bool context_valid;
int stride;
u32 width;
int context_loss_count;
@@ -84,12 +83,21 @@ struct gpio_bank {
};
#define GPIO_INDEX(bank, gpio) (gpio % bank->width)
-#define GPIO_BIT(bank, gpio) (1 << GPIO_INDEX(bank, gpio))
+#define GPIO_BIT(bank, gpio) (BIT(GPIO_INDEX(bank, gpio)))
#define GPIO_MOD_CTRL_BIT BIT(0)
+#define BANK_USED(bank) (bank->mod_usage || bank->irq_usage)
+#define LINE_USED(line, offset) (line & (BIT(offset)))
+
static int irq_to_gpio(struct gpio_bank *bank, unsigned int gpio_irq)
{
- return gpio_irq - bank->irq_base + bank->chip.base;
+ return bank->chip.base + gpio_irq;
+}
+
+static inline struct gpio_bank *_irq_data_get_bank(struct irq_data *d)
+{
+ struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
+ return container_of(chip, struct gpio_bank, chip);
}
static void _set_gpio_direction(struct gpio_bank *bank, int gpio, int is_input)
@@ -98,12 +106,12 @@ static void _set_gpio_direction(struct gpio_bank *bank, int gpio, int is_input)
u32 l;
reg += bank->regs->direction;
- l = __raw_readl(reg);
+ l = readl_relaxed(reg);
if (is_input)
- l |= 1 << gpio;
+ l |= BIT(gpio);
else
- l &= ~(1 << gpio);
- __raw_writel(l, reg);
+ l &= ~(BIT(gpio));
+ writel_relaxed(l, reg);
bank->context.oe = l;
}
@@ -122,7 +130,7 @@ static void _set_gpio_dataout_reg(struct gpio_bank *bank, int gpio, int enable)
bank->context.dataout &= ~l;
}
- __raw_writel(l, reg);
+ writel_relaxed(l, reg);
}
/* set data out value using mask register */
@@ -132,12 +140,12 @@ static void _set_gpio_dataout_mask(struct gpio_bank *bank, int gpio, int enable)
u32 gpio_bit = GPIO_BIT(bank, gpio);
u32 l;
- l = __raw_readl(reg);
+ l = readl_relaxed(reg);
if (enable)
l |= gpio_bit;
else
l &= ~gpio_bit;
- __raw_writel(l, reg);
+ writel_relaxed(l, reg);
bank->context.dataout = l;
}
@@ -145,35 +153,35 @@ static int _get_gpio_datain(struct gpio_bank *bank, int offset)
{
void __iomem *reg = bank->base + bank->regs->datain;
- return (__raw_readl(reg) & (1 << offset)) != 0;
+ return (readl_relaxed(reg) & (BIT(offset))) != 0;
}
static int _get_gpio_dataout(struct gpio_bank *bank, int offset)
{
void __iomem *reg = bank->base + bank->regs->dataout;
- return (__raw_readl(reg) & (1 << offset)) != 0;
+ return (readl_relaxed(reg) & (BIT(offset))) != 0;
}
static inline void _gpio_rmw(void __iomem *base, u32 reg, u32 mask, bool set)
{
- int l = __raw_readl(base + reg);
+ int l = readl_relaxed(base + reg);
if (set)
l |= mask;
else
l &= ~mask;
- __raw_writel(l, base + reg);
+ writel_relaxed(l, base + reg);
}
static inline void _gpio_dbck_enable(struct gpio_bank *bank)
{
if (bank->dbck_enable_mask && !bank->dbck_enabled) {
- clk_enable(bank->dbck);
+ clk_prepare_enable(bank->dbck);
bank->dbck_enabled = true;
- __raw_writel(bank->dbck_enable_mask,
+ writel_relaxed(bank->dbck_enable_mask,
bank->base + bank->regs->debounce_en);
}
}
@@ -186,9 +194,9 @@ static inline void _gpio_dbck_disable(struct gpio_bank *bank)
* enabled but the clock is not, GPIO module seems to be unable
* to detect events and generate interrupts at least on OMAP3.
*/
- __raw_writel(0, bank->base + bank->regs->debounce_en);
+ writel_relaxed(0, bank->base + bank->regs->debounce_en);
- clk_disable(bank->dbck);
+ clk_disable_unprepare(bank->dbck);
bank->dbck_enabled = false;
}
}
@@ -221,12 +229,12 @@ static void _set_gpio_debounce(struct gpio_bank *bank, unsigned gpio,
l = GPIO_BIT(bank, gpio);
- clk_enable(bank->dbck);
+ clk_prepare_enable(bank->dbck);
reg = bank->base + bank->regs->debounce;
- __raw_writel(debounce, reg);
+ writel_relaxed(debounce, reg);
reg = bank->base + bank->regs->debounce_en;
- val = __raw_readl(reg);
+ val = readl_relaxed(reg);
if (debounce)
val |= l;
@@ -234,8 +242,8 @@ static void _set_gpio_debounce(struct gpio_bank *bank, unsigned gpio,
val &= ~l;
bank->dbck_enable_mask = val;
- __raw_writel(val, reg);
- clk_disable(bank->dbck);
+ writel_relaxed(val, reg);
+ clk_disable_unprepare(bank->dbck);
/*
* Enable debounce clock per module.
* This call is mandatory because in omap_gpio_request() when
@@ -273,14 +281,14 @@ static void _clear_gpio_debounce(struct gpio_bank *bank, unsigned gpio)
bank->dbck_enable_mask &= ~gpio_bit;
bank->context.debounce_en &= ~gpio_bit;
- __raw_writel(bank->context.debounce_en,
+ writel_relaxed(bank->context.debounce_en,
bank->base + bank->regs->debounce_en);
if (!bank->dbck_enable_mask) {
bank->context.debounce = 0;
- __raw_writel(bank->context.debounce, bank->base +
+ writel_relaxed(bank->context.debounce, bank->base +
bank->regs->debounce);
- clk_disable(bank->dbck);
+ clk_disable_unprepare(bank->dbck);
bank->dbck_enabled = false;
}
}
@@ -289,7 +297,7 @@ static inline void set_gpio_trigger(struct gpio_bank *bank, int gpio,
unsigned trigger)
{
void __iomem *base = bank->base;
- u32 gpio_bit = 1 << gpio;
+ u32 gpio_bit = BIT(gpio);
_gpio_rmw(base, bank->regs->leveldetect0, gpio_bit,
trigger & IRQ_TYPE_LEVEL_LOW);
@@ -301,18 +309,18 @@ static inline void set_gpio_trigger(struct gpio_bank *bank, int gpio,
trigger & IRQ_TYPE_EDGE_FALLING);
bank->context.leveldetect0 =
- __raw_readl(bank->base + bank->regs->leveldetect0);
+ readl_relaxed(bank->base + bank->regs->leveldetect0);
bank->context.leveldetect1 =
- __raw_readl(bank->base + bank->regs->leveldetect1);
+ readl_relaxed(bank->base + bank->regs->leveldetect1);
bank->context.risingdetect =
- __raw_readl(bank->base + bank->regs->risingdetect);
+ readl_relaxed(bank->base + bank->regs->risingdetect);
bank->context.fallingdetect =
- __raw_readl(bank->base + bank->regs->fallingdetect);
+ readl_relaxed(bank->base + bank->regs->fallingdetect);
if (likely(!(bank->non_wakeup_gpios & gpio_bit))) {
_gpio_rmw(base, bank->regs->wkup_en, gpio_bit, trigger != 0);
bank->context.wake_en =
- __raw_readl(bank->base + bank->regs->wkup_en);
+ readl_relaxed(bank->base + bank->regs->wkup_en);
}
/* This part needs to be executed always for OMAP{34xx, 44xx} */
@@ -337,8 +345,8 @@ static inline void set_gpio_trigger(struct gpio_bank *bank, int gpio,
exit:
bank->level_mask =
- __raw_readl(bank->base + bank->regs->leveldetect0) |
- __raw_readl(bank->base + bank->regs->leveldetect1);
+ readl_relaxed(bank->base + bank->regs->leveldetect0) |
+ readl_relaxed(bank->base + bank->regs->leveldetect1);
}
#ifdef CONFIG_ARCH_OMAP1
@@ -356,13 +364,13 @@ static void _toggle_gpio_edge_triggering(struct gpio_bank *bank, int gpio)
reg += bank->regs->irqctrl;
- l = __raw_readl(reg);
+ l = readl_relaxed(reg);
if ((l >> gpio) & 1)
- l &= ~(1 << gpio);
+ l &= ~(BIT(gpio));
else
- l |= 1 << gpio;
+ l |= BIT(gpio);
- __raw_writel(l, reg);
+ writel_relaxed(l, reg);
}
#else
static void _toggle_gpio_edge_triggering(struct gpio_bank *bank, int gpio) {}
@@ -380,17 +388,17 @@ static int _set_gpio_triggering(struct gpio_bank *bank, int gpio,
} else if (bank->regs->irqctrl) {
reg += bank->regs->irqctrl;
- l = __raw_readl(reg);
+ l = readl_relaxed(reg);
if ((trigger & IRQ_TYPE_SENSE_MASK) == IRQ_TYPE_EDGE_BOTH)
- bank->toggle_mask |= 1 << gpio;
+ bank->toggle_mask |= BIT(gpio);
if (trigger & IRQ_TYPE_EDGE_RISING)
- l |= 1 << gpio;
+ l |= BIT(gpio);
else if (trigger & IRQ_TYPE_EDGE_FALLING)
- l &= ~(1 << gpio);
+ l &= ~(BIT(gpio));
else
return -EINVAL;
- __raw_writel(l, reg);
+ writel_relaxed(l, reg);
} else if (bank->regs->edgectrl1) {
if (gpio & 0x08)
reg += bank->regs->edgectrl2;
@@ -398,28 +406,85 @@ static int _set_gpio_triggering(struct gpio_bank *bank, int gpio,
reg += bank->regs->edgectrl1;
gpio &= 0x07;
- l = __raw_readl(reg);
+ l = readl_relaxed(reg);
l &= ~(3 << (gpio << 1));
if (trigger & IRQ_TYPE_EDGE_RISING)
l |= 2 << (gpio << 1);
if (trigger & IRQ_TYPE_EDGE_FALLING)
- l |= 1 << (gpio << 1);
+ l |= BIT(gpio << 1);
/* Enable wake-up during idle for dynamic tick */
- _gpio_rmw(base, bank->regs->wkup_en, 1 << gpio, trigger);
+ _gpio_rmw(base, bank->regs->wkup_en, BIT(gpio), trigger);
bank->context.wake_en =
- __raw_readl(bank->base + bank->regs->wkup_en);
- __raw_writel(l, reg);
+ readl_relaxed(bank->base + bank->regs->wkup_en);
+ writel_relaxed(l, reg);
}
return 0;
}
+static void _enable_gpio_module(struct gpio_bank *bank, unsigned offset)
+{
+ if (bank->regs->pinctrl) {
+ void __iomem *reg = bank->base + bank->regs->pinctrl;
+
+ /* Claim the pin for MPU */
+ writel_relaxed(readl_relaxed(reg) | (BIT(offset)), reg);
+ }
+
+ if (bank->regs->ctrl && !BANK_USED(bank)) {
+ void __iomem *reg = bank->base + bank->regs->ctrl;
+ u32 ctrl;
+
+ ctrl = readl_relaxed(reg);
+ /* Module is enabled, clocks are not gated */
+ ctrl &= ~GPIO_MOD_CTRL_BIT;
+ writel_relaxed(ctrl, reg);
+ bank->context.ctrl = ctrl;
+ }
+}
+
+static void _disable_gpio_module(struct gpio_bank *bank, unsigned offset)
+{
+ void __iomem *base = bank->base;
+
+ if (bank->regs->wkup_en &&
+ !LINE_USED(bank->mod_usage, offset) &&
+ !LINE_USED(bank->irq_usage, offset)) {
+ /* Disable wake-up during idle for dynamic tick */
+ _gpio_rmw(base, bank->regs->wkup_en, BIT(offset), 0);
+ bank->context.wake_en =
+ readl_relaxed(bank->base + bank->regs->wkup_en);
+ }
+
+ if (bank->regs->ctrl && !BANK_USED(bank)) {
+ void __iomem *reg = bank->base + bank->regs->ctrl;
+ u32 ctrl;
+
+ ctrl = readl_relaxed(reg);
+ /* Module is disabled, clocks are gated */
+ ctrl |= GPIO_MOD_CTRL_BIT;
+ writel_relaxed(ctrl, reg);
+ bank->context.ctrl = ctrl;
+ }
+}
+
+static int gpio_is_input(struct gpio_bank *bank, int mask)
+{
+ void __iomem *reg = bank->base + bank->regs->direction;
+
+ return readl_relaxed(reg) & mask;
+}
+
static int gpio_irq_type(struct irq_data *d, unsigned type)
{
- struct gpio_bank *bank = irq_data_get_irq_chip_data(d);
+ struct gpio_bank *bank = _irq_data_get_bank(d);
unsigned gpio = 0;
int retval;
unsigned long flags;
+ unsigned offset;
+
+ if (!BANK_USED(bank))
+ pm_runtime_get_sync(bank->dev);
#ifdef CONFIG_ARCH_OMAP1
if (d->irq > IH_MPUIO_BASE)
@@ -427,7 +492,7 @@ static int gpio_irq_type(struct irq_data *d, unsigned type)
#endif
if (!gpio)
- gpio = irq_to_gpio(bank, d->irq);
+ gpio = irq_to_gpio(bank, d->hwirq);
if (type & ~IRQ_TYPE_SENSE_MASK)
return -EINVAL;
@@ -437,7 +502,17 @@ static int gpio_irq_type(struct irq_data *d, unsigned type)
return -EINVAL;
spin_lock_irqsave(&bank->lock, flags);
- retval = _set_gpio_triggering(bank, GPIO_INDEX(bank, gpio), type);
+ offset = GPIO_INDEX(bank, gpio);
+ retval = _set_gpio_triggering(bank, offset, type);
+ if (!LINE_USED(bank->mod_usage, offset)) {
+ _enable_gpio_module(bank, offset);
+ _set_gpio_direction(bank, offset, 1);
+ } else if (!gpio_is_input(bank, BIT(offset))) {
+ spin_unlock_irqrestore(&bank->lock, flags);
+ return -EINVAL;
+ }
+
+ bank->irq_usage |= BIT(GPIO_INDEX(bank, gpio));
spin_unlock_irqrestore(&bank->lock, flags);
if (type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH))
@@ -453,16 +528,16 @@ static void _clear_gpio_irqbank(struct gpio_bank *bank, int gpio_mask)
void __iomem *reg = bank->base;
reg += bank->regs->irqstatus;
- __raw_writel(gpio_mask, reg);
+ writel_relaxed(gpio_mask, reg);
/* Workaround for clearing DSP GPIO interrupts to allow retention */
if (bank->regs->irqstatus2) {
reg = bank->base + bank->regs->irqstatus2;
- __raw_writel(gpio_mask, reg);
+ writel_relaxed(gpio_mask, reg);
}
/* Flush posted write for the irq status to avoid spurious interrupts */
- __raw_readl(reg);
+ readl_relaxed(reg);
}
static inline void _clear_gpio_irqstatus(struct gpio_bank *bank, int gpio)
@@ -474,10 +549,10 @@ static u32 _get_gpio_irqbank_mask(struct gpio_bank *bank)
{
void __iomem *reg = bank->base;
u32 l;
- u32 mask = (1 << bank->width) - 1;
+ u32 mask = (BIT(bank->width)) - 1;
reg += bank->regs->irqenable;
- l = __raw_readl(reg);
+ l = readl_relaxed(reg);
if (bank->regs->irqenable_inv)
l = ~l;
l &= mask;
@@ -495,7 +570,7 @@ static void _enable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask)
bank->context.irqenable1 |= gpio_mask;
} else {
reg += bank->regs->irqenable;
- l = __raw_readl(reg);
+ l = readl_relaxed(reg);
if (bank->regs->irqenable_inv)
l &= ~gpio_mask;
else
@@ -503,7 +578,7 @@ static void _enable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask)
bank->context.irqenable1 = l;
}
- __raw_writel(l, reg);
+ writel_relaxed(l, reg);
}
static void _disable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask)
@@ -517,7 +592,7 @@ static void _disable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask)
bank->context.irqenable1 &= ~gpio_mask;
} else {
reg += bank->regs->irqenable;
- l = __raw_readl(reg);
+ l = readl_relaxed(reg);
if (bank->regs->irqenable_inv)
l |= gpio_mask;
else
@@ -525,7 +600,7 @@ static void _disable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask)
bank->context.irqenable1 = l;
}
- __raw_writel(l, reg);
+ writel_relaxed(l, reg);
}
static inline void _set_gpio_irqenable(struct gpio_bank *bank, int gpio, int enable)
@@ -561,7 +636,7 @@ static int _set_gpio_wakeup(struct gpio_bank *bank, int gpio, int enable)
else
bank->context.wake_en &= ~gpio_bit;
- __raw_writel(bank->context.wake_en, bank->base + bank->regs->wkup_en);
+ writel_relaxed(bank->context.wake_en, bank->base + bank->regs->wkup_en);
spin_unlock_irqrestore(&bank->lock, flags);
return 0;
@@ -579,8 +654,8 @@ static void _reset_gpio(struct gpio_bank *bank, int gpio)
/* Use disable_irq_wake() and enable_irq_wake() functions from drivers */
static int gpio_wake_enable(struct irq_data *d, unsigned int enable)
{
- struct gpio_bank *bank = irq_data_get_irq_chip_data(d);
- unsigned int gpio = irq_to_gpio(bank, d->irq);
+ struct gpio_bank *bank = _irq_data_get_bank(d);
+ unsigned int gpio = irq_to_gpio(bank, d->hwirq);
return _set_gpio_wakeup(bank, gpio, enable);
}
@@ -594,35 +669,19 @@ static int omap_gpio_request(struct gpio_chip *chip, unsigned offset)
* If this is the first gpio_request for the bank,
* enable the bank module.
*/
- if (!bank->mod_usage)
+ if (!BANK_USED(bank))
pm_runtime_get_sync(bank->dev);
spin_lock_irqsave(&bank->lock, flags);
/* Set trigger to none. You need to enable the desired trigger with
- * request_irq() or set_irq_type().
+ * request_irq() or set_irq_type(). Only do this if the IRQ line has
+ * not already been requested.
*/
- _set_gpio_triggering(bank, offset, IRQ_TYPE_NONE);
-
- if (bank->regs->pinctrl) {
- void __iomem *reg = bank->base + bank->regs->pinctrl;
-
- /* Claim the pin for MPU */
- __raw_writel(__raw_readl(reg) | (1 << offset), reg);
+ if (!LINE_USED(bank->irq_usage, offset)) {
+ _set_gpio_triggering(bank, offset, IRQ_TYPE_NONE);
+ _enable_gpio_module(bank, offset);
}
-
- if (bank->regs->ctrl && !bank->mod_usage) {
- void __iomem *reg = bank->base + bank->regs->ctrl;
- u32 ctrl;
-
- ctrl = __raw_readl(reg);
- /* Module is enabled, clocks are not gated */
- ctrl &= ~GPIO_MOD_CTRL_BIT;
- __raw_writel(ctrl, reg);
- bank->context.ctrl = ctrl;
- }
-
- bank->mod_usage |= 1 << offset;
-
+ bank->mod_usage |= BIT(offset);
spin_unlock_irqrestore(&bank->lock, flags);
return 0;
@@ -631,31 +690,11 @@ static int omap_gpio_request(struct gpio_chip *chip, unsigned offset)
static void omap_gpio_free(struct gpio_chip *chip, unsigned offset)
{
struct gpio_bank *bank = container_of(chip, struct gpio_bank, chip);
- void __iomem *base = bank->base;
unsigned long flags;
spin_lock_irqsave(&bank->lock, flags);
-
- if (bank->regs->wkup_en) {
- /* Disable wake-up during idle for dynamic tick */
- _gpio_rmw(base, bank->regs->wkup_en, 1 << offset, 0);
- bank->context.wake_en =
- __raw_readl(bank->base + bank->regs->wkup_en);
- }
-
- bank->mod_usage &= ~(1 << offset);
-
- if (bank->regs->ctrl && !bank->mod_usage) {
- void __iomem *reg = bank->base + bank->regs->ctrl;
- u32 ctrl;
-
- ctrl = __raw_readl(reg);
- /* Module is disabled, clocks are gated */
- ctrl |= GPIO_MOD_CTRL_BIT;
- __raw_writel(ctrl, reg);
- bank->context.ctrl = ctrl;
- }
-
+ bank->mod_usage &= ~(BIT(offset));
+ _disable_gpio_module(bank, offset);
_reset_gpio(bank, bank->chip.base + offset);
spin_unlock_irqrestore(&bank->lock, flags);
@@ -663,7 +702,7 @@ static void omap_gpio_free(struct gpio_chip *chip, unsigned offset)
* If this is the last gpio to be freed in the bank,
* disable the bank module.
*/
- if (!bank->mod_usage)
+ if (!BANK_USED(bank))
pm_runtime_put(bank->dev);
}
@@ -680,26 +719,27 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
{
void __iomem *isr_reg = NULL;
u32 isr;
- unsigned int gpio_irq, gpio_index;
+ unsigned int bit;
struct gpio_bank *bank;
int unmasked = 0;
- struct irq_chip *chip = irq_desc_get_chip(desc);
+ struct irq_chip *irqchip = irq_desc_get_chip(desc);
+ struct gpio_chip *chip = irq_get_handler_data(irq);
- chained_irq_enter(chip, desc);
+ chained_irq_enter(irqchip, desc);
- bank = irq_get_handler_data(irq);
+ bank = container_of(chip, struct gpio_bank, chip);
isr_reg = bank->base + bank->regs->irqstatus;
pm_runtime_get_sync(bank->dev);
if (WARN_ON(!isr_reg))
goto exit;
- while(1) {
+ while (1) {
u32 isr_saved, level_mask = 0;
u32 enabled;
enabled = _get_gpio_irqbank_mask(bank);
- isr_saved = isr = __raw_readl(isr_reg) & enabled;
+ isr_saved = isr = readl_relaxed(isr_reg) & enabled;
if (bank->level_mask)
level_mask = bank->level_mask & enabled;
@@ -715,20 +755,15 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
configured, we could unmask GPIO bank interrupt immediately */
if (!level_mask && !unmasked) {
unmasked = 1;
- chained_irq_exit(chip, desc);
+ chained_irq_exit(irqchip, desc);
}
if (!isr)
break;
- gpio_irq = bank->irq_base;
- for (; isr != 0; isr >>= 1, gpio_irq++) {
- int gpio = irq_to_gpio(bank, gpio_irq);
-
- if (!(isr & 1))
- continue;
-
- gpio_index = GPIO_INDEX(bank, gpio);
+ while (isr) {
+ bit = __ffs(isr);
+ isr &= ~(BIT(bit));
/*
* Some chips can't respond to both rising and falling
@@ -737,10 +772,11 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
* to respond to the IRQ for the opposite direction.
* This will be indicated in the bank toggle_mask.
*/
- if (bank->toggle_mask & (1 << gpio_index))
- _toggle_gpio_edge_triggering(bank, gpio_index);
+ if (bank->toggle_mask & (BIT(bit)))
+ _toggle_gpio_edge_triggering(bank, bit);
- generic_handle_irq(gpio_irq);
+ generic_handle_irq(irq_find_mapping(bank->chip.irqdomain,
+ bit));
}
}
/* if bank has any level sensitive GPIO pin interrupt
@@ -749,33 +785,44 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
interrupt */
exit:
if (!unmasked)
- chained_irq_exit(chip, desc);
+ chained_irq_exit(irqchip, desc);
pm_runtime_put(bank->dev);
}
static void gpio_irq_shutdown(struct irq_data *d)
{
- struct gpio_bank *bank = irq_data_get_irq_chip_data(d);
- unsigned int gpio = irq_to_gpio(bank, d->irq);
+ struct gpio_bank *bank = _irq_data_get_bank(d);
+ unsigned int gpio = irq_to_gpio(bank, d->hwirq);
unsigned long flags;
+ unsigned offset = GPIO_INDEX(bank, gpio);
spin_lock_irqsave(&bank->lock, flags);
+ gpio_unlock_as_irq(&bank->chip, offset);
+ bank->irq_usage &= ~(BIT(offset));
+ _disable_gpio_module(bank, offset);
_reset_gpio(bank, gpio);
spin_unlock_irqrestore(&bank->lock, flags);
+
+ /*
+ * If this is the last IRQ to be freed in the bank,
+ * disable the bank module.
+ */
+ if (!BANK_USED(bank))
+ pm_runtime_put(bank->dev);
}
static void gpio_ack_irq(struct irq_data *d)
{
- struct gpio_bank *bank = irq_data_get_irq_chip_data(d);
- unsigned int gpio = irq_to_gpio(bank, d->irq);
+ struct gpio_bank *bank = _irq_data_get_bank(d);
+ unsigned int gpio = irq_to_gpio(bank, d->hwirq);
_clear_gpio_irqstatus(bank, gpio);
}
static void gpio_mask_irq(struct irq_data *d)
{
- struct gpio_bank *bank = irq_data_get_irq_chip_data(d);
- unsigned int gpio = irq_to_gpio(bank, d->irq);
+ struct gpio_bank *bank = _irq_data_get_bank(d);
+ unsigned int gpio = irq_to_gpio(bank, d->hwirq);
unsigned long flags;
spin_lock_irqsave(&bank->lock, flags);
@@ -786,8 +833,8 @@ static void gpio_mask_irq(struct irq_data *d)
static void gpio_unmask_irq(struct irq_data *d)
{
- struct gpio_bank *bank = irq_data_get_irq_chip_data(d);
- unsigned int gpio = irq_to_gpio(bank, d->irq);
+ struct gpio_bank *bank = _irq_data_get_bank(d);
+ unsigned int gpio = irq_to_gpio(bank, d->hwirq);
unsigned int irq_mask = GPIO_BIT(bank, gpio);
u32 trigger = irqd_get_trigger_type(d);
unsigned long flags;
@@ -828,7 +875,7 @@ static int omap_mpuio_suspend_noirq(struct device *dev)
unsigned long flags;
spin_lock_irqsave(&bank->lock, flags);
- __raw_writel(0xffff & ~bank->context.wake_en, mask_reg);
+ writel_relaxed(0xffff & ~bank->context.wake_en, mask_reg);
spin_unlock_irqrestore(&bank->lock, flags);
return 0;
@@ -843,7 +890,7 @@ static int omap_mpuio_resume_noirq(struct device *dev)
unsigned long flags;
spin_lock_irqsave(&bank->lock, flags);
- __raw_writel(bank->context.wake_en, mask_reg);
+ writel_relaxed(bank->context.wake_en, mask_reg);
spin_unlock_irqrestore(&bank->lock, flags);
return 0;
@@ -881,23 +928,31 @@ static inline void mpuio_init(struct gpio_bank *bank)
/*---------------------------------------------------------------------*/
-static int gpio_input(struct gpio_chip *chip, unsigned offset)
+static int gpio_get_direction(struct gpio_chip *chip, unsigned offset)
{
struct gpio_bank *bank;
unsigned long flags;
+ void __iomem *reg;
+ int dir;
bank = container_of(chip, struct gpio_bank, chip);
+ reg = bank->base + bank->regs->direction;
spin_lock_irqsave(&bank->lock, flags);
- _set_gpio_direction(bank, offset, 1);
+ dir = !!(readl_relaxed(reg) & BIT(offset));
spin_unlock_irqrestore(&bank->lock, flags);
- return 0;
+ return dir;
}
-static int gpio_is_input(struct gpio_bank *bank, int mask)
+static int gpio_input(struct gpio_chip *chip, unsigned offset)
{
- void __iomem *reg = bank->base + bank->regs->direction;
+ struct gpio_bank *bank;
+ unsigned long flags;
- return __raw_readl(reg) & mask;
+ bank = container_of(chip, struct gpio_bank, chip);
+ spin_lock_irqsave(&bank->lock, flags);
+ _set_gpio_direction(bank, offset, 1);
+ spin_unlock_irqrestore(&bank->lock, flags);
+ return 0;
}
static int gpio_get(struct gpio_chip *chip, unsigned offset)
@@ -906,7 +961,7 @@ static int gpio_get(struct gpio_chip *chip, unsigned offset)
u32 mask;
bank = container_of(chip, struct gpio_bank, chip);
- mask = (1 << offset);
+ mask = (BIT(offset));
if (gpio_is_input(bank, mask))
return _get_gpio_datain(bank, offset);
@@ -953,14 +1008,6 @@ static void gpio_set(struct gpio_chip *chip, unsigned offset, int value)
spin_unlock_irqrestore(&bank->lock, flags);
}
-static int gpio_2irq(struct gpio_chip *chip, unsigned offset)
-{
- struct gpio_bank *bank;
-
- bank = container_of(chip, struct gpio_bank, chip);
- return bank->irq_base + offset;
-}
-
/*---------------------------------------------------------------------*/
static void __init omap_gpio_show_rev(struct gpio_bank *bank)
@@ -971,7 +1018,7 @@ static void __init omap_gpio_show_rev(struct gpio_bank *bank)
if (called || bank->regs->revision == USHRT_MAX)
return;
- rev = __raw_readw(bank->base + bank->regs->revision);
+ rev = readw_relaxed(bank->base + bank->regs->revision);
pr_info("OMAP GPIO hardware version %d.%d\n",
(rev >> 4) & 0x0f, rev & 0x0f);
@@ -992,20 +1039,20 @@ static void omap_gpio_mod_init(struct gpio_bank *bank)
l = 0xffff;
if (bank->is_mpuio) {
- __raw_writel(l, bank->base + bank->regs->irqenable);
+ writel_relaxed(l, bank->base + bank->regs->irqenable);
return;
}
_gpio_rmw(base, bank->regs->irqenable, l, bank->regs->irqenable_inv);
_gpio_rmw(base, bank->regs->irqstatus, l, !bank->regs->irqenable_inv);
if (bank->regs->debounce_en)
- __raw_writel(0, base + bank->regs->debounce_en);
+ writel_relaxed(0, base + bank->regs->debounce_en);
/* Save OE default value (0xffffffff) in the context */
- bank->context.oe = __raw_readl(bank->base + bank->regs->direction);
+ bank->context.oe = readl_relaxed(bank->base + bank->regs->direction);
/* Initialize interface clk ungated, module enabled */
if (bank->regs->ctrl)
- __raw_writel(0, base + bank->regs->ctrl);
+ writel_relaxed(0, base + bank->regs->ctrl);
bank->dbck = clk_get(bank->dev, "dbclk");
if (IS_ERR(bank->dbck))
@@ -1034,17 +1081,19 @@ omap_mpuio_alloc_gc(struct gpio_bank *bank, unsigned int irq_start,
ct->chip.irq_set_type = gpio_irq_type;
if (bank->regs->wkup_en)
- ct->chip.irq_set_wake = gpio_wake_enable,
+ ct->chip.irq_set_wake = gpio_wake_enable;
ct->regs.mask = OMAP_MPUIO_GPIO_INT / bank->stride;
irq_setup_generic_chip(gc, IRQ_MSK(num), IRQ_GC_INIT_MASK_CACHE,
IRQ_NOREQUEST | IRQ_NOPROBE, 0);
}
-static void omap_gpio_chip_init(struct gpio_bank *bank)
+static int omap_gpio_chip_init(struct gpio_bank *bank)
{
int j;
static int gpio;
+ int irq_base = 0;
+ int ret;
/*
* REVISIT eventually switch from OMAP-specific gpio structs
@@ -1052,12 +1101,12 @@ static void omap_gpio_chip_init(struct gpio_bank *bank)
*/
bank->chip.request = omap_gpio_request;
bank->chip.free = omap_gpio_free;
+ bank->chip.get_direction = gpio_get_direction;
bank->chip.direction_input = gpio_input;
bank->chip.get = gpio_get;
bank->chip.direction_output = gpio_output;
bank->chip.set_debounce = gpio_debounce;
bank->chip.set = gpio_set;
- bank->chip.to_irq = gpio_2irq;
if (bank->is_mpuio) {
bank->chip.label = "mpuio";
if (bank->regs->wkup_en)
@@ -1070,21 +1119,48 @@ static void omap_gpio_chip_init(struct gpio_bank *bank)
}
bank->chip.ngpio = bank->width;
- gpiochip_add(&bank->chip);
+ ret = gpiochip_add(&bank->chip);
+ if (ret) {
+ dev_err(bank->dev, "Could not register gpio chip %d\n", ret);
+ return ret;
+ }
+
+#ifdef CONFIG_ARCH_OMAP1
+ /*
+ * REVISIT: Once we have OMAP1 supporting SPARSE_IRQ, we can drop
+ * irq_alloc_descs() since a base IRQ offset will no longer be needed.
+ */
+ irq_base = irq_alloc_descs(-1, 0, bank->width, 0);
+ if (irq_base < 0) {
+ dev_err(bank->dev, "Couldn't allocate IRQ numbers\n");
+ return -ENODEV;
+ }
+#endif
+
+ ret = gpiochip_irqchip_add(&bank->chip, &gpio_irq_chip,
+ irq_base, gpio_irq_handler,
+ IRQ_TYPE_NONE);
+
+ if (ret) {
+ dev_err(bank->dev, "Couldn't add irqchip to gpiochip %d\n", ret);
+ ret = gpiochip_remove(&bank->chip);
+ return -ENODEV;
+ }
+
+ gpiochip_set_chained_irqchip(&bank->chip, &gpio_irq_chip,
+ bank->irq, gpio_irq_handler);
- for (j = bank->irq_base; j < bank->irq_base + bank->width; j++) {
- irq_set_lockdep_class(j, &gpio_lock_class);
- irq_set_chip_data(j, bank);
+ for (j = 0; j < bank->width; j++) {
+ int irq = irq_find_mapping(bank->chip.irqdomain, j);
+ irq_set_lockdep_class(irq, &gpio_lock_class);
if (bank->is_mpuio) {
- omap_mpuio_alloc_gc(bank, j, bank->width);
- } else {
- irq_set_chip(j, &gpio_irq_chip);
- irq_set_handler(j, handle_simple_irq);
- set_irq_flags(j, IRQF_VALID);
+ omap_mpuio_alloc_gc(bank, irq, bank->width);
+ irq_set_chip_and_handler(irq, NULL, NULL);
+ set_irq_flags(irq, 0);
}
}
- irq_set_chained_handler(bank->irq, gpio_irq_handler);
- irq_set_handler_data(bank->irq, bank);
+
+ return 0;
}
static const struct of_device_id omap_gpio_match[];
@@ -1097,11 +1173,11 @@ static int omap_gpio_probe(struct platform_device *pdev)
const struct omap_gpio_platform_data *pdata;
struct resource *res;
struct gpio_bank *bank;
- int ret = 0;
+ int ret;
match = of_match_device(of_match_ptr(omap_gpio_match), dev);
- pdata = match ? match->data : dev->platform_data;
+ pdata = match ? match->data : dev_get_platdata(dev);
if (!pdata)
return -EINVAL;
@@ -1119,26 +1195,27 @@ static int omap_gpio_probe(struct platform_device *pdev)
bank->irq = res->start;
bank->dev = dev;
+ bank->chip.dev = dev;
bank->dbck_flag = pdata->dbck_flag;
bank->stride = pdata->bank_stride;
bank->width = pdata->bank_width;
bank->is_mpuio = pdata->is_mpuio;
bank->non_wakeup_gpios = pdata->non_wakeup_gpios;
- bank->loses_context = pdata->loses_context;
bank->regs = pdata->regs;
#ifdef CONFIG_OF_GPIO
bank->chip.of_node = of_node_get(node);
#endif
+ if (node) {
+ if (!of_property_read_bool(node, "ti,gpio-always-on"))
+ bank->loses_context = true;
+ } else {
+ bank->loses_context = pdata->loses_context;
- bank->irq_base = irq_alloc_descs(-1, 0, bank->width, 0);
- if (bank->irq_base < 0) {
- dev_err(dev, "Couldn't allocate IRQ numbers\n");
- return -ENODEV;
+ if (bank->loses_context)
+ bank->get_context_loss_count =
+ pdata->get_context_loss_count;
}
- bank->domain = irq_domain_add_legacy(node, bank->width, bank->irq_base,
- 0, &irq_domain_simple_ops, NULL);
-
if (bank->regs->set_dataout && bank->regs->clr_dataout)
bank->set_dataout = _set_gpio_dataout_reg;
else
@@ -1148,21 +1225,10 @@ static int omap_gpio_probe(struct platform_device *pdev)
/* Static mapping, never released */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (unlikely(!res)) {
- dev_err(dev, "Invalid mem resource\n");
- return -ENODEV;
- }
-
- if (!devm_request_mem_region(dev, res->start, resource_size(res),
- pdev->name)) {
- dev_err(dev, "Region already claimed\n");
- return -EBUSY;
- }
-
- bank->base = devm_ioremap(dev, res->start, resource_size(res));
- if (!bank->base) {
- dev_err(dev, "Could not ioremap\n");
- return -ENOMEM;
+ bank->base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(bank->base)) {
+ irq_domain_remove(bank->chip.irqdomain);
+ return PTR_ERR(bank->base);
}
platform_set_drvdata(pdev, bank);
@@ -1175,17 +1241,18 @@ static int omap_gpio_probe(struct platform_device *pdev)
mpuio_init(bank);
omap_gpio_mod_init(bank);
- omap_gpio_chip_init(bank);
- omap_gpio_show_rev(bank);
- if (bank->loses_context)
- bank->get_context_loss_count = pdata->get_context_loss_count;
+ ret = omap_gpio_chip_init(bank);
+ if (ret)
+ return ret;
+
+ omap_gpio_show_rev(bank);
pm_runtime_put(bank->dev);
list_add_tail(&bank->node, &omap_gpio_list);
- return ret;
+ return 0;
}
#ifdef CONFIG_ARCH_OMAP2PLUS
@@ -1216,11 +1283,11 @@ static int omap_gpio_runtime_suspend(struct device *dev)
*/
wake_low = bank->context.leveldetect0 & bank->context.wake_en;
if (wake_low)
- __raw_writel(wake_low | bank->context.fallingdetect,
+ writel_relaxed(wake_low | bank->context.fallingdetect,
bank->base + bank->regs->fallingdetect);
wake_hi = bank->context.leveldetect1 & bank->context.wake_en;
if (wake_hi)
- __raw_writel(wake_hi | bank->context.risingdetect,
+ writel_relaxed(wake_hi | bank->context.risingdetect,
bank->base + bank->regs->risingdetect);
if (!bank->enabled_non_wakeup_gpios)
@@ -1235,7 +1302,7 @@ static int omap_gpio_runtime_suspend(struct device *dev)
* non-wakeup GPIOs. Otherwise spurious IRQs will be
* generated. See OMAP2420 Errata item 1.101.
*/
- bank->saved_datain = __raw_readl(bank->base +
+ bank->saved_datain = readl_relaxed(bank->base +
bank->regs->datain);
l1 = bank->context.fallingdetect;
l2 = bank->context.risingdetect;
@@ -1243,8 +1310,8 @@ static int omap_gpio_runtime_suspend(struct device *dev)
l1 &= ~bank->enabled_non_wakeup_gpios;
l2 &= ~bank->enabled_non_wakeup_gpios;
- __raw_writel(l1, bank->base + bank->regs->fallingdetect);
- __raw_writel(l2, bank->base + bank->regs->risingdetect);
+ writel_relaxed(l1, bank->base + bank->regs->fallingdetect);
+ writel_relaxed(l2, bank->base + bank->regs->risingdetect);
bank->workaround_enabled = true;
@@ -1259,15 +1326,31 @@ update_gpio_context_count:
return 0;
}
+static void omap_gpio_init_context(struct gpio_bank *p);
+
static int omap_gpio_runtime_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct gpio_bank *bank = platform_get_drvdata(pdev);
- int context_lost_cnt_after;
u32 l = 0, gen, gen0, gen1;
unsigned long flags;
+ int c;
spin_lock_irqsave(&bank->lock, flags);
+
+ /*
+ * On the first resume during the probe, the context has not
+ * been initialised and so initialise it now. Also initialise
+ * the context loss count.
+ */
+ if (bank->loses_context && !bank->context_valid) {
+ omap_gpio_init_context(bank);
+
+ if (bank->get_context_loss_count)
+ bank->context_loss_count =
+ bank->get_context_loss_count(bank->dev);
+ }
+
_gpio_dbck_enable(bank);
/*
@@ -1276,19 +1359,22 @@ static int omap_gpio_runtime_resume(struct device *dev)
* generate a PRCM wakeup. Here we restore the
* pre-runtime_suspend() values for edge triggering.
*/
- __raw_writel(bank->context.fallingdetect,
+ writel_relaxed(bank->context.fallingdetect,
bank->base + bank->regs->fallingdetect);
- __raw_writel(bank->context.risingdetect,
+ writel_relaxed(bank->context.risingdetect,
bank->base + bank->regs->risingdetect);
- if (bank->get_context_loss_count) {
- context_lost_cnt_after =
- bank->get_context_loss_count(bank->dev);
- if (context_lost_cnt_after != bank->context_loss_count) {
+ if (bank->loses_context) {
+ if (!bank->get_context_loss_count) {
omap_gpio_restore_context(bank);
} else {
- spin_unlock_irqrestore(&bank->lock, flags);
- return 0;
+ c = bank->get_context_loss_count(bank->dev);
+ if (c != bank->context_loss_count) {
+ omap_gpio_restore_context(bank);
+ } else {
+ spin_unlock_irqrestore(&bank->lock, flags);
+ return 0;
+ }
}
}
@@ -1297,11 +1383,7 @@ static int omap_gpio_runtime_resume(struct device *dev)
return 0;
}
- __raw_writel(bank->context.fallingdetect,
- bank->base + bank->regs->fallingdetect);
- __raw_writel(bank->context.risingdetect,
- bank->base + bank->regs->risingdetect);
- l = __raw_readl(bank->base + bank->regs->datain);
+ l = readl_relaxed(bank->base + bank->regs->datain);
/*
* Check if any of the non-wakeup interrupt GPIOs have changed
@@ -1331,24 +1413,24 @@ static int omap_gpio_runtime_resume(struct device *dev)
if (gen) {
u32 old0, old1;
- old0 = __raw_readl(bank->base + bank->regs->leveldetect0);
- old1 = __raw_readl(bank->base + bank->regs->leveldetect1);
+ old0 = readl_relaxed(bank->base + bank->regs->leveldetect0);
+ old1 = readl_relaxed(bank->base + bank->regs->leveldetect1);
if (!bank->regs->irqstatus_raw0) {
- __raw_writel(old0 | gen, bank->base +
+ writel_relaxed(old0 | gen, bank->base +
bank->regs->leveldetect0);
- __raw_writel(old1 | gen, bank->base +
+ writel_relaxed(old1 | gen, bank->base +
bank->regs->leveldetect1);
}
if (bank->regs->irqstatus_raw0) {
- __raw_writel(old0 | l, bank->base +
+ writel_relaxed(old0 | l, bank->base +
bank->regs->leveldetect0);
- __raw_writel(old1 | l, bank->base +
+ writel_relaxed(old1 | l, bank->base +
bank->regs->leveldetect1);
}
- __raw_writel(old0, bank->base + bank->regs->leveldetect0);
- __raw_writel(old1, bank->base + bank->regs->leveldetect1);
+ writel_relaxed(old0, bank->base + bank->regs->leveldetect0);
+ writel_relaxed(old1, bank->base + bank->regs->leveldetect1);
}
bank->workaround_enabled = false;
@@ -1363,7 +1445,7 @@ void omap2_gpio_prepare_for_idle(int pwr_mode)
struct gpio_bank *bank;
list_for_each_entry(bank, &omap_gpio_list, node) {
- if (!bank->mod_usage || !bank->loses_context)
+ if (!BANK_USED(bank) || !bank->loses_context)
continue;
bank->power_mode = pwr_mode;
@@ -1377,7 +1459,7 @@ void omap2_gpio_resume_after_idle(void)
struct gpio_bank *bank;
list_for_each_entry(bank, &omap_gpio_list, node) {
- if (!bank->mod_usage || !bank->loses_context)
+ if (!BANK_USED(bank) || !bank->loses_context)
continue;
pm_runtime_get_sync(bank->dev);
@@ -1385,43 +1467,67 @@ void omap2_gpio_resume_after_idle(void)
}
#if defined(CONFIG_PM_RUNTIME)
+static void omap_gpio_init_context(struct gpio_bank *p)
+{
+ struct omap_gpio_reg_offs *regs = p->regs;
+ void __iomem *base = p->base;
+
+ p->context.ctrl = readl_relaxed(base + regs->ctrl);
+ p->context.oe = readl_relaxed(base + regs->direction);
+ p->context.wake_en = readl_relaxed(base + regs->wkup_en);
+ p->context.leveldetect0 = readl_relaxed(base + regs->leveldetect0);
+ p->context.leveldetect1 = readl_relaxed(base + regs->leveldetect1);
+ p->context.risingdetect = readl_relaxed(base + regs->risingdetect);
+ p->context.fallingdetect = readl_relaxed(base + regs->fallingdetect);
+ p->context.irqenable1 = readl_relaxed(base + regs->irqenable);
+ p->context.irqenable2 = readl_relaxed(base + regs->irqenable2);
+
+ if (regs->set_dataout && p->regs->clr_dataout)
+ p->context.dataout = readl_relaxed(base + regs->set_dataout);
+ else
+ p->context.dataout = readl_relaxed(base + regs->dataout);
+
+ p->context_valid = true;
+}
+
static void omap_gpio_restore_context(struct gpio_bank *bank)
{
- __raw_writel(bank->context.wake_en,
+ writel_relaxed(bank->context.wake_en,
bank->base + bank->regs->wkup_en);
- __raw_writel(bank->context.ctrl, bank->base + bank->regs->ctrl);
- __raw_writel(bank->context.leveldetect0,
+ writel_relaxed(bank->context.ctrl, bank->base + bank->regs->ctrl);
+ writel_relaxed(bank->context.leveldetect0,
bank->base + bank->regs->leveldetect0);
- __raw_writel(bank->context.leveldetect1,
+ writel_relaxed(bank->context.leveldetect1,
bank->base + bank->regs->leveldetect1);
- __raw_writel(bank->context.risingdetect,
+ writel_relaxed(bank->context.risingdetect,
bank->base + bank->regs->risingdetect);
- __raw_writel(bank->context.fallingdetect,
+ writel_relaxed(bank->context.fallingdetect,
bank->base + bank->regs->fallingdetect);
if (bank->regs->set_dataout && bank->regs->clr_dataout)
- __raw_writel(bank->context.dataout,
+ writel_relaxed(bank->context.dataout,
bank->base + bank->regs->set_dataout);
else
- __raw_writel(bank->context.dataout,
+ writel_relaxed(bank->context.dataout,
bank->base + bank->regs->dataout);
- __raw_writel(bank->context.oe, bank->base + bank->regs->direction);
+ writel_relaxed(bank->context.oe, bank->base + bank->regs->direction);
if (bank->dbck_enable_mask) {
- __raw_writel(bank->context.debounce, bank->base +
+ writel_relaxed(bank->context.debounce, bank->base +
bank->regs->debounce);
- __raw_writel(bank->context.debounce_en,
+ writel_relaxed(bank->context.debounce_en,
bank->base + bank->regs->debounce_en);
}
- __raw_writel(bank->context.irqenable1,
+ writel_relaxed(bank->context.irqenable1,
bank->base + bank->regs->irqenable);
- __raw_writel(bank->context.irqenable2,
+ writel_relaxed(bank->context.irqenable2,
bank->base + bank->regs->irqenable2);
}
#endif /* CONFIG_PM_RUNTIME */
#else
#define omap_gpio_runtime_suspend NULL
#define omap_gpio_runtime_resume NULL
+static inline void omap_gpio_init_context(struct gpio_bank *p) {}
#endif
static const struct dev_pm_ops gpio_pm_ops = {
@@ -1476,19 +1582,19 @@ static struct omap_gpio_reg_offs omap4_gpio_regs = {
.fallingdetect = OMAP4_GPIO_FALLINGDETECT,
};
-const static struct omap_gpio_platform_data omap2_pdata = {
+static const struct omap_gpio_platform_data omap2_pdata = {
.regs = &omap2_gpio_regs,
.bank_width = 32,
.dbck_flag = false,
};
-const static struct omap_gpio_platform_data omap3_pdata = {
+static const struct omap_gpio_platform_data omap3_pdata = {
.regs = &omap2_gpio_regs,
.bank_width = 32,
.dbck_flag = true,
};
-const static struct omap_gpio_platform_data omap4_pdata = {
+static const struct omap_gpio_platform_data omap4_pdata = {
.regs = &omap4_gpio_regs,
.bank_width = 32,
.dbck_flag = true,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 12:17:36 +0000