summaryrefslogtreecommitdiff
path: root/drivers/pinctrl/sirf/pinctrl-sirf.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/pinctrl/sirf/pinctrl-sirf.c')
-rw-r--r--drivers/pinctrl/sirf/pinctrl-sirf.c350
1 files changed, 153 insertions, 197 deletions
diff --git a/drivers/pinctrl/sirf/pinctrl-sirf.c b/drivers/pinctrl/sirf/pinctrl-sirf.c
index 76502aab2cb1..014f5b1fee55 100644
--- a/drivers/pinctrl/sirf/pinctrl-sirf.c
+++ b/drivers/pinctrl/sirf/pinctrl-sirf.c
@@ -14,8 +14,6 @@
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/err.h>
-#include <linux/irqdomain.h>
-#include <linux/irqchip/chained_irq.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/pinctrl/consumer.h>
@@ -27,22 +25,23 @@
#include <linux/bitops.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
-#include <asm/mach/irq.h>
#include "pinctrl-sirf.h"
#define DRIVER_NAME "pinmux-sirf"
struct sirfsoc_gpio_bank {
- struct of_mm_gpio_chip chip;
- struct irq_domain *domain;
int id;
int parent_irq;
spinlock_t lock;
+};
+
+struct sirfsoc_gpio_chip {
+ struct of_mm_gpio_chip chip;
bool is_marco; /* for marco, some registers are different with prima2 */
+ struct sirfsoc_gpio_bank sgpio_bank[SIRFSOC_GPIO_NO_OF_BANKS];
};
-static struct sirfsoc_gpio_bank sgpio_bank[SIRFSOC_GPIO_NO_OF_BANKS];
static DEFINE_SPINLOCK(sgpio_lock);
static struct sirfsoc_pin_group *sirfsoc_pin_groups;
@@ -255,37 +254,6 @@ static struct pinctrl_desc sirfsoc_pinmux_desc = {
.owner = THIS_MODULE,
};
-/*
- * Todo: bind irq_chip to every pinctrl_gpio_range
- */
-static struct pinctrl_gpio_range sirfsoc_gpio_ranges[] = {
- {
- .name = "sirfsoc-gpio*",
- .id = 0,
- .base = 0,
- .pin_base = 0,
- .npins = 32,
- }, {
- .name = "sirfsoc-gpio*",
- .id = 1,
- .base = 32,
- .pin_base = 32,
- .npins = 32,
- }, {
- .name = "sirfsoc-gpio*",
- .id = 2,
- .base = 64,
- .pin_base = 64,
- .npins = 32,
- }, {
- .name = "sirfsoc-gpio*",
- .id = 3,
- .base = 96,
- .pin_base = 96,
- .npins = 19,
- },
-};
-
static void __iomem *sirfsoc_rsc_of_iomap(void)
{
const struct of_device_id rsc_ids[] = {
@@ -303,19 +271,16 @@ static void __iomem *sirfsoc_rsc_of_iomap(void)
}
static int sirfsoc_gpio_of_xlate(struct gpio_chip *gc,
- const struct of_phandle_args *gpiospec,
- u32 *flags)
+ const struct of_phandle_args *gpiospec,
+ u32 *flags)
{
- if (gpiospec->args[0] > SIRFSOC_GPIO_NO_OF_BANKS * SIRFSOC_GPIO_BANK_SIZE)
- return -EINVAL;
-
- if (gc != &sgpio_bank[gpiospec->args[0] / SIRFSOC_GPIO_BANK_SIZE].chip.gc)
+ if (gpiospec->args[0] > SIRFSOC_GPIO_NO_OF_BANKS * SIRFSOC_GPIO_BANK_SIZE)
return -EINVAL;
- if (flags)
+ if (flags)
*flags = gpiospec->args[1];
- return gpiospec->args[0] % SIRFSOC_GPIO_BANK_SIZE;
+ return gpiospec->args[0];
}
static const struct of_device_id pinmux_ids[] = {
@@ -331,7 +296,6 @@ static int sirfsoc_pinmux_probe(struct platform_device *pdev)
struct sirfsoc_pmx *spmx;
struct device_node *np = pdev->dev.of_node;
const struct sirfsoc_pinctrl_data *pdata;
- int i;
/* Create state holders etc for this driver */
spmx = devm_kzalloc(&pdev->dev, sizeof(*spmx), GFP_KERNEL);
@@ -375,11 +339,6 @@ static int sirfsoc_pinmux_probe(struct platform_device *pdev)
goto out_no_pmx;
}
- for (i = 0; i < ARRAY_SIZE(sirfsoc_gpio_ranges); i++) {
- sirfsoc_gpio_ranges[i].gc = &sgpio_bank[i].chip.gc;
- pinctrl_add_gpio_range(spmx->pmx, &sirfsoc_gpio_ranges[i]);
- }
-
dev_info(&pdev->dev, "initialized SIRFSOC pinmux driver\n");
return 0;
@@ -464,34 +423,28 @@ static int __init sirfsoc_pinmux_init(void)
}
arch_initcall(sirfsoc_pinmux_init);
-static inline int sirfsoc_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
+static inline struct sirfsoc_gpio_chip *to_sirfsoc_gpio(struct gpio_chip *gc)
{
- struct sirfsoc_gpio_bank *bank = container_of(to_of_mm_gpio_chip(chip),
- struct sirfsoc_gpio_bank, chip);
-
- return irq_create_mapping(bank->domain, offset + bank->id *
- SIRFSOC_GPIO_BANK_SIZE);
-}
-
-static inline int sirfsoc_gpio_to_offset(unsigned int gpio)
-{
- return gpio % SIRFSOC_GPIO_BANK_SIZE;
+ return container_of(gc, struct sirfsoc_gpio_chip, chip.gc);
}
-static inline struct sirfsoc_gpio_bank *sirfsoc_gpio_to_bank(unsigned int gpio)
+static inline struct sirfsoc_gpio_bank *
+sirfsoc_gpio_to_bank(struct sirfsoc_gpio_chip *sgpio, unsigned int offset)
{
- return &sgpio_bank[gpio / SIRFSOC_GPIO_BANK_SIZE];
+ return &sgpio->sgpio_bank[offset / SIRFSOC_GPIO_BANK_SIZE];
}
-static inline struct sirfsoc_gpio_bank *sirfsoc_irqchip_to_bank(struct gpio_chip *chip)
+static inline int sirfsoc_gpio_to_bankoff(unsigned int offset)
{
- return container_of(to_of_mm_gpio_chip(chip), struct sirfsoc_gpio_bank, chip);
+ return offset % SIRFSOC_GPIO_BANK_SIZE;
}
static void sirfsoc_gpio_irq_ack(struct irq_data *d)
{
- struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
- int idx = d->hwirq % SIRFSOC_GPIO_BANK_SIZE;
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct sirfsoc_gpio_chip *sgpio = to_sirfsoc_gpio(gc);
+ struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(sgpio, d->hwirq);
+ int idx = sirfsoc_gpio_to_bankoff(d->hwirq);
u32 val, offset;
unsigned long flags;
@@ -499,14 +452,16 @@ static void sirfsoc_gpio_irq_ack(struct irq_data *d)
spin_lock_irqsave(&sgpio_lock, flags);
- val = readl(bank->chip.regs + offset);
+ val = readl(sgpio->chip.regs + offset);
- writel(val, bank->chip.regs + offset);
+ writel(val, sgpio->chip.regs + offset);
spin_unlock_irqrestore(&sgpio_lock, flags);
}
-static void __sirfsoc_gpio_irq_mask(struct sirfsoc_gpio_bank *bank, int idx)
+static void __sirfsoc_gpio_irq_mask(struct sirfsoc_gpio_chip *sgpio,
+ struct sirfsoc_gpio_bank *bank,
+ int idx)
{
u32 val, offset;
unsigned long flags;
@@ -515,25 +470,29 @@ static void __sirfsoc_gpio_irq_mask(struct sirfsoc_gpio_bank *bank, int idx)
spin_lock_irqsave(&sgpio_lock, flags);
- val = readl(bank->chip.regs + offset);
+ val = readl(sgpio->chip.regs + offset);
val &= ~SIRFSOC_GPIO_CTL_INTR_EN_MASK;
val &= ~SIRFSOC_GPIO_CTL_INTR_STS_MASK;
- writel(val, bank->chip.regs + offset);
+ writel(val, sgpio->chip.regs + offset);
spin_unlock_irqrestore(&sgpio_lock, flags);
}
static void sirfsoc_gpio_irq_mask(struct irq_data *d)
{
- struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct sirfsoc_gpio_chip *sgpio = to_sirfsoc_gpio(gc);
+ struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(sgpio, d->hwirq);
- __sirfsoc_gpio_irq_mask(bank, d->hwirq % SIRFSOC_GPIO_BANK_SIZE);
+ __sirfsoc_gpio_irq_mask(sgpio, bank, d->hwirq % SIRFSOC_GPIO_BANK_SIZE);
}
static void sirfsoc_gpio_irq_unmask(struct irq_data *d)
{
- struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
- int idx = d->hwirq % SIRFSOC_GPIO_BANK_SIZE;
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct sirfsoc_gpio_chip *sgpio = to_sirfsoc_gpio(gc);
+ struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(sgpio, d->hwirq);
+ int idx = sirfsoc_gpio_to_bankoff(d->hwirq);
u32 val, offset;
unsigned long flags;
@@ -541,18 +500,20 @@ static void sirfsoc_gpio_irq_unmask(struct irq_data *d)
spin_lock_irqsave(&sgpio_lock, flags);
- val = readl(bank->chip.regs + offset);
+ val = readl(sgpio->chip.regs + offset);
val &= ~SIRFSOC_GPIO_CTL_INTR_STS_MASK;
val |= SIRFSOC_GPIO_CTL_INTR_EN_MASK;
- writel(val, bank->chip.regs + offset);
+ writel(val, sgpio->chip.regs + offset);
spin_unlock_irqrestore(&sgpio_lock, flags);
}
static int sirfsoc_gpio_irq_type(struct irq_data *d, unsigned type)
{
- struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
- int idx = d->hwirq % SIRFSOC_GPIO_BANK_SIZE;
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct sirfsoc_gpio_chip *sgpio = to_sirfsoc_gpio(gc);
+ struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(sgpio, d->hwirq);
+ int idx = sirfsoc_gpio_to_bankoff(d->hwirq);
u32 val, offset;
unsigned long flags;
@@ -560,7 +521,7 @@ static int sirfsoc_gpio_irq_type(struct irq_data *d, unsigned type)
spin_lock_irqsave(&sgpio_lock, flags);
- val = readl(bank->chip.regs + offset);
+ val = readl(sgpio->chip.regs + offset);
val &= ~(SIRFSOC_GPIO_CTL_INTR_STS_MASK | SIRFSOC_GPIO_CTL_OUT_EN_MASK);
switch (type) {
@@ -588,53 +549,41 @@ static int sirfsoc_gpio_irq_type(struct irq_data *d, unsigned type)
break;
}
- writel(val, bank->chip.regs + offset);
+ writel(val, sgpio->chip.regs + offset);
spin_unlock_irqrestore(&sgpio_lock, flags);
return 0;
}
-static int sirfsoc_gpio_irq_reqres(struct irq_data *d)
-{
- struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
-
- if (gpio_lock_as_irq(&bank->chip.gc, d->hwirq % SIRFSOC_GPIO_BANK_SIZE)) {
- dev_err(bank->chip.gc.dev,
- "unable to lock HW IRQ %lu for IRQ\n",
- d->hwirq);
- return -EINVAL;
- }
- return 0;
-}
-
-static void sirfsoc_gpio_irq_relres(struct irq_data *d)
-{
- struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
-
- gpio_unlock_as_irq(&bank->chip.gc, d->hwirq % SIRFSOC_GPIO_BANK_SIZE);
-}
-
static struct irq_chip sirfsoc_irq_chip = {
.name = "sirf-gpio-irq",
.irq_ack = sirfsoc_gpio_irq_ack,
.irq_mask = sirfsoc_gpio_irq_mask,
.irq_unmask = sirfsoc_gpio_irq_unmask,
.irq_set_type = sirfsoc_gpio_irq_type,
- .irq_request_resources = sirfsoc_gpio_irq_reqres,
- .irq_release_resources = sirfsoc_gpio_irq_relres,
};
static void sirfsoc_gpio_handle_irq(unsigned int irq, struct irq_desc *desc)
{
- struct sirfsoc_gpio_bank *bank = irq_get_handler_data(irq);
+ struct gpio_chip *gc = irq_desc_get_handler_data(desc);
+ struct sirfsoc_gpio_chip *sgpio = to_sirfsoc_gpio(gc);
+ struct sirfsoc_gpio_bank *bank;
u32 status, ctrl;
int idx = 0;
struct irq_chip *chip = irq_get_chip(irq);
+ int i;
+
+ for (i = 0; i < SIRFSOC_GPIO_NO_OF_BANKS; i++) {
+ bank = &sgpio->sgpio_bank[i];
+ if (bank->parent_irq == irq)
+ break;
+ }
+ BUG_ON(i == SIRFSOC_GPIO_NO_OF_BANKS);
chained_irq_enter(chip, desc);
- status = readl(bank->chip.regs + SIRFSOC_GPIO_INT_STATUS(bank->id));
+ status = readl(sgpio->chip.regs + SIRFSOC_GPIO_INT_STATUS(bank->id));
if (!status) {
printk(KERN_WARNING
"%s: gpio id %d status %#x no interrupt is flaged\n",
@@ -644,7 +593,7 @@ static void sirfsoc_gpio_handle_irq(unsigned int irq, struct irq_desc *desc)
}
while (status) {
- ctrl = readl(bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, idx));
+ ctrl = readl(sgpio->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, idx));
/*
* Here we must check whether the corresponding GPIO's interrupt
@@ -653,7 +602,7 @@ static void sirfsoc_gpio_handle_irq(unsigned int irq, struct irq_desc *desc)
if ((status & 0x1) && (ctrl & SIRFSOC_GPIO_CTL_INTR_EN_MASK)) {
pr_debug("%s: gpio id %d idx %d happens\n",
__func__, bank->id, idx);
- generic_handle_irq(irq_find_mapping(bank->domain, idx +
+ generic_handle_irq(irq_find_mapping(gc->irqdomain, idx +
bank->id * SIRFSOC_GPIO_BANK_SIZE));
}
@@ -664,18 +613,20 @@ static void sirfsoc_gpio_handle_irq(unsigned int irq, struct irq_desc *desc)
chained_irq_exit(chip, desc);
}
-static inline void sirfsoc_gpio_set_input(struct sirfsoc_gpio_bank *bank, unsigned ctrl_offset)
+static inline void sirfsoc_gpio_set_input(struct sirfsoc_gpio_chip *sgpio,
+ unsigned ctrl_offset)
{
u32 val;
- val = readl(bank->chip.regs + ctrl_offset);
+ val = readl(sgpio->chip.regs + ctrl_offset);
val &= ~SIRFSOC_GPIO_CTL_OUT_EN_MASK;
- writel(val, bank->chip.regs + ctrl_offset);
+ writel(val, sgpio->chip.regs + ctrl_offset);
}
static int sirfsoc_gpio_request(struct gpio_chip *chip, unsigned offset)
{
- struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
+ struct sirfsoc_gpio_chip *sgpio = to_sirfsoc_gpio(chip);
+ struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(sgpio, offset);
unsigned long flags;
if (pinctrl_request_gpio(chip->base + offset))
@@ -687,8 +638,8 @@ static int sirfsoc_gpio_request(struct gpio_chip *chip, unsigned offset)
* default status:
* set direction as input and mask irq
*/
- sirfsoc_gpio_set_input(bank, SIRFSOC_GPIO_CTRL(bank->id, offset));
- __sirfsoc_gpio_irq_mask(bank, offset);
+ sirfsoc_gpio_set_input(sgpio, SIRFSOC_GPIO_CTRL(bank->id, offset));
+ __sirfsoc_gpio_irq_mask(sgpio, bank, offset);
spin_unlock_irqrestore(&bank->lock, flags);
@@ -697,13 +648,14 @@ static int sirfsoc_gpio_request(struct gpio_chip *chip, unsigned offset)
static void sirfsoc_gpio_free(struct gpio_chip *chip, unsigned offset)
{
- struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
+ struct sirfsoc_gpio_chip *sgpio = to_sirfsoc_gpio(chip);
+ struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(sgpio, offset);
unsigned long flags;
spin_lock_irqsave(&bank->lock, flags);
- __sirfsoc_gpio_irq_mask(bank, offset);
- sirfsoc_gpio_set_input(bank, SIRFSOC_GPIO_CTRL(bank->id, offset));
+ __sirfsoc_gpio_irq_mask(sgpio, bank, offset);
+ sirfsoc_gpio_set_input(sgpio, SIRFSOC_GPIO_CTRL(bank->id, offset));
spin_unlock_irqrestore(&bank->lock, flags);
@@ -712,8 +664,9 @@ static void sirfsoc_gpio_free(struct gpio_chip *chip, unsigned offset)
static int sirfsoc_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
{
- struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
- int idx = sirfsoc_gpio_to_offset(gpio);
+ struct sirfsoc_gpio_chip *sgpio = to_sirfsoc_gpio(chip);
+ struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(sgpio, gpio);
+ int idx = sirfsoc_gpio_to_bankoff(gpio);
unsigned long flags;
unsigned offset;
@@ -721,22 +674,24 @@ static int sirfsoc_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
spin_lock_irqsave(&bank->lock, flags);
- sirfsoc_gpio_set_input(bank, offset);
+ sirfsoc_gpio_set_input(sgpio, offset);
spin_unlock_irqrestore(&bank->lock, flags);
return 0;
}
-static inline void sirfsoc_gpio_set_output(struct sirfsoc_gpio_bank *bank, unsigned offset,
- int value)
+static inline void sirfsoc_gpio_set_output(struct sirfsoc_gpio_chip *sgpio,
+ struct sirfsoc_gpio_bank *bank,
+ unsigned offset,
+ int value)
{
u32 out_ctrl;
unsigned long flags;
spin_lock_irqsave(&bank->lock, flags);
- out_ctrl = readl(bank->chip.regs + offset);
+ out_ctrl = readl(sgpio->chip.regs + offset);
if (value)
out_ctrl |= SIRFSOC_GPIO_CTL_DATAOUT_MASK;
else
@@ -744,15 +699,16 @@ static inline void sirfsoc_gpio_set_output(struct sirfsoc_gpio_bank *bank, unsig
out_ctrl &= ~SIRFSOC_GPIO_CTL_INTR_EN_MASK;
out_ctrl |= SIRFSOC_GPIO_CTL_OUT_EN_MASK;
- writel(out_ctrl, bank->chip.regs + offset);
+ writel(out_ctrl, sgpio->chip.regs + offset);
spin_unlock_irqrestore(&bank->lock, flags);
}
static int sirfsoc_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int value)
{
- struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
- int idx = sirfsoc_gpio_to_offset(gpio);
+ struct sirfsoc_gpio_chip *sgpio = to_sirfsoc_gpio(chip);
+ struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(sgpio, gpio);
+ int idx = sirfsoc_gpio_to_bankoff(gpio);
u32 offset;
unsigned long flags;
@@ -760,7 +716,7 @@ static int sirfsoc_gpio_direction_output(struct gpio_chip *chip, unsigned gpio,
spin_lock_irqsave(&sgpio_lock, flags);
- sirfsoc_gpio_set_output(bank, offset, value);
+ sirfsoc_gpio_set_output(sgpio, bank, offset, value);
spin_unlock_irqrestore(&sgpio_lock, flags);
@@ -769,13 +725,14 @@ static int sirfsoc_gpio_direction_output(struct gpio_chip *chip, unsigned gpio,
static int sirfsoc_gpio_get_value(struct gpio_chip *chip, unsigned offset)
{
- struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
+ struct sirfsoc_gpio_chip *sgpio = to_sirfsoc_gpio(chip);
+ struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(sgpio, offset);
u32 val;
unsigned long flags;
spin_lock_irqsave(&bank->lock, flags);
- val = readl(bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset));
+ val = readl(sgpio->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset));
spin_unlock_irqrestore(&bank->lock, flags);
@@ -785,44 +742,25 @@ static int sirfsoc_gpio_get_value(struct gpio_chip *chip, unsigned offset)
static void sirfsoc_gpio_set_value(struct gpio_chip *chip, unsigned offset,
int value)
{
- struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
+ struct sirfsoc_gpio_chip *sgpio = to_sirfsoc_gpio(chip);
+ struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(sgpio, offset);
u32 ctrl;
unsigned long flags;
spin_lock_irqsave(&bank->lock, flags);
- ctrl = readl(bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset));
+ ctrl = readl(sgpio->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset));
if (value)
ctrl |= SIRFSOC_GPIO_CTL_DATAOUT_MASK;
else
ctrl &= ~SIRFSOC_GPIO_CTL_DATAOUT_MASK;
- writel(ctrl, bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset));
+ writel(ctrl, sgpio->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset));
spin_unlock_irqrestore(&bank->lock, flags);
}
-static int sirfsoc_gpio_irq_map(struct irq_domain *d, unsigned int irq,
- irq_hw_number_t hwirq)
-{
- struct sirfsoc_gpio_bank *bank = d->host_data;
-
- if (!bank)
- return -EINVAL;
-
- irq_set_chip(irq, &sirfsoc_irq_chip);
- irq_set_handler(irq, handle_level_irq);
- irq_set_chip_data(irq, bank + hwirq / SIRFSOC_GPIO_BANK_SIZE);
- set_irq_flags(irq, IRQF_VALID);
-
- return 0;
-}
-
-static const struct irq_domain_ops sirfsoc_gpio_irq_simple_ops = {
- .map = sirfsoc_gpio_irq_map,
- .xlate = irq_domain_xlate_twocell,
-};
-
-static void sirfsoc_gpio_set_pullup(const u32 *pullups)
+static void sirfsoc_gpio_set_pullup(struct sirfsoc_gpio_chip *sgpio,
+ const u32 *pullups)
{
int i, n;
const unsigned long *p = (const unsigned long *)pullups;
@@ -830,15 +768,16 @@ static void sirfsoc_gpio_set_pullup(const u32 *pullups)
for (i = 0; i < SIRFSOC_GPIO_NO_OF_BANKS; i++) {
for_each_set_bit(n, p + i, BITS_PER_LONG) {
u32 offset = SIRFSOC_GPIO_CTRL(i, n);
- u32 val = readl(sgpio_bank[i].chip.regs + offset);
+ u32 val = readl(sgpio->chip.regs + offset);
val |= SIRFSOC_GPIO_CTL_PULL_MASK;
val |= SIRFSOC_GPIO_CTL_PULL_HIGH;
- writel(val, sgpio_bank[i].chip.regs + offset);
+ writel(val, sgpio->chip.regs + offset);
}
}
}
-static void sirfsoc_gpio_set_pulldown(const u32 *pulldowns)
+static void sirfsoc_gpio_set_pulldown(struct sirfsoc_gpio_chip *sgpio,
+ const u32 *pulldowns)
{
int i, n;
const unsigned long *p = (const unsigned long *)pulldowns;
@@ -846,10 +785,10 @@ static void sirfsoc_gpio_set_pulldown(const u32 *pulldowns)
for (i = 0; i < SIRFSOC_GPIO_NO_OF_BANKS; i++) {
for_each_set_bit(n, p + i, BITS_PER_LONG) {
u32 offset = SIRFSOC_GPIO_CTRL(i, n);
- u32 val = readl(sgpio_bank[i].chip.regs + offset);
+ u32 val = readl(sgpio->chip.regs + offset);
val |= SIRFSOC_GPIO_CTL_PULL_MASK;
val &= ~SIRFSOC_GPIO_CTL_PULL_HIGH;
- writel(val, sgpio_bank[i].chip.regs + offset);
+ writel(val, sgpio->chip.regs + offset);
}
}
}
@@ -857,10 +796,10 @@ static void sirfsoc_gpio_set_pulldown(const u32 *pulldowns)
static int sirfsoc_gpio_probe(struct device_node *np)
{
int i, err = 0;
+ static struct sirfsoc_gpio_chip *sgpio;
struct sirfsoc_gpio_bank *bank;
void __iomem *regs;
struct platform_device *pdev;
- struct irq_domain *domain;
bool is_marco = false;
u32 pullups[SIRFSOC_GPIO_NO_OF_BANKS], pulldowns[SIRFSOC_GPIO_NO_OF_BANKS];
@@ -869,6 +808,10 @@ static int sirfsoc_gpio_probe(struct device_node *np)
if (!pdev)
return -ENODEV;
+ sgpio = devm_kzalloc(&pdev->dev, sizeof(*sgpio), GFP_KERNEL);
+ if (!sgpio)
+ return -ENOMEM;
+
regs = of_iomap(np, 0);
if (!regs)
return -ENOMEM;
@@ -876,63 +819,76 @@ static int sirfsoc_gpio_probe(struct device_node *np)
if (of_device_is_compatible(np, "sirf,marco-pinctrl"))
is_marco = 1;
- domain = irq_domain_add_linear(np, SIRFSOC_GPIO_BANK_SIZE * SIRFSOC_GPIO_NO_OF_BANKS,
- &sirfsoc_gpio_irq_simple_ops, sgpio_bank);
- if (!domain) {
- pr_err("%s: Failed to create irqdomain\n", np->full_name);
- err = -ENOSYS;
+ sgpio->chip.gc.request = sirfsoc_gpio_request;
+ sgpio->chip.gc.free = sirfsoc_gpio_free;
+ sgpio->chip.gc.direction_input = sirfsoc_gpio_direction_input;
+ sgpio->chip.gc.get = sirfsoc_gpio_get_value;
+ sgpio->chip.gc.direction_output = sirfsoc_gpio_direction_output;
+ sgpio->chip.gc.set = sirfsoc_gpio_set_value;
+ sgpio->chip.gc.base = 0;
+ sgpio->chip.gc.ngpio = SIRFSOC_GPIO_BANK_SIZE * SIRFSOC_GPIO_NO_OF_BANKS;
+ sgpio->chip.gc.label = kstrdup(np->full_name, GFP_KERNEL);
+ sgpio->chip.gc.of_node = np;
+ sgpio->chip.gc.of_xlate = sirfsoc_gpio_of_xlate;
+ sgpio->chip.gc.of_gpio_n_cells = 2;
+ sgpio->chip.gc.dev = &pdev->dev;
+ sgpio->chip.regs = regs;
+ sgpio->is_marco = is_marco;
+
+ err = gpiochip_add(&sgpio->chip.gc);
+ if (err) {
+ dev_err(&pdev->dev, "%s: error in probe function with status %d\n",
+ np->full_name, err);
+ goto out;
+ }
+
+ err = gpiochip_irqchip_add(&sgpio->chip.gc,
+ &sirfsoc_irq_chip,
+ 0, handle_level_irq,
+ IRQ_TYPE_NONE);
+ if (err) {
+ dev_err(&pdev->dev,
+ "could not connect irqchip to gpiochip\n");
goto out;
}
for (i = 0; i < SIRFSOC_GPIO_NO_OF_BANKS; i++) {
- bank = &sgpio_bank[i];
+ bank = &sgpio->sgpio_bank[i];
spin_lock_init(&bank->lock);
- bank->chip.gc.request = sirfsoc_gpio_request;
- bank->chip.gc.free = sirfsoc_gpio_free;
- bank->chip.gc.direction_input = sirfsoc_gpio_direction_input;
- bank->chip.gc.get = sirfsoc_gpio_get_value;
- bank->chip.gc.direction_output = sirfsoc_gpio_direction_output;
- bank->chip.gc.set = sirfsoc_gpio_set_value;
- bank->chip.gc.to_irq = sirfsoc_gpio_to_irq;
- bank->chip.gc.base = i * SIRFSOC_GPIO_BANK_SIZE;
- bank->chip.gc.ngpio = SIRFSOC_GPIO_BANK_SIZE;
- bank->chip.gc.label = kstrdup(np->full_name, GFP_KERNEL);
- bank->chip.gc.of_node = np;
- bank->chip.gc.of_xlate = sirfsoc_gpio_of_xlate;
- bank->chip.gc.of_gpio_n_cells = 2;
- bank->chip.gc.dev = &pdev->dev;
- bank->chip.regs = regs;
- bank->id = i;
- bank->is_marco = is_marco;
bank->parent_irq = platform_get_irq(pdev, i);
if (bank->parent_irq < 0) {
err = bank->parent_irq;
- goto out;
+ goto out_banks;
}
- err = gpiochip_add(&bank->chip.gc);
- if (err) {
- pr_err("%s: error in probe function with status %d\n",
- np->full_name, err);
- goto out;
- }
-
- bank->domain = domain;
+ gpiochip_set_chained_irqchip(&sgpio->chip.gc,
+ &sirfsoc_irq_chip,
+ bank->parent_irq,
+ sirfsoc_gpio_handle_irq);
+ }
- irq_set_chained_handler(bank->parent_irq, sirfsoc_gpio_handle_irq);
- irq_set_handler_data(bank->parent_irq, bank);
+ err = gpiochip_add_pin_range(&sgpio->chip.gc, dev_name(&pdev->dev),
+ 0, 0, SIRFSOC_GPIO_BANK_SIZE * SIRFSOC_GPIO_NO_OF_BANKS);
+ if (err) {
+ dev_err(&pdev->dev,
+ "could not add gpiochip pin range\n");
+ goto out_no_range;
}
if (!of_property_read_u32_array(np, "sirf,pullups", pullups,
SIRFSOC_GPIO_NO_OF_BANKS))
- sirfsoc_gpio_set_pullup(pullups);
+ sirfsoc_gpio_set_pullup(sgpio, pullups);
if (!of_property_read_u32_array(np, "sirf,pulldowns", pulldowns,
SIRFSOC_GPIO_NO_OF_BANKS))
- sirfsoc_gpio_set_pulldown(pulldowns);
+ sirfsoc_gpio_set_pulldown(sgpio, pulldowns);
return 0;
+out_no_range:
+out_banks:
+ if (gpiochip_remove(&sgpio->chip.gc))
+ dev_err(&pdev->dev, "could not remove gpio chip\n");
out:
iounmap(regs);
return err;