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raspberrypi-kernel
提交 c5eb757c 编写于 作者: B Barry Song 提交者： Linus Walleij
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pinctrl: sirf: wrap all gpio banks into one gpio_chip 

all gpio banks are in one chip, that makes software clean in mapping
irq and gpio.
Signed-off-by: NBarry Song <Baohua.Song@csr.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
上级 aef95b69
隐藏空白更改
内联 并排
Showing with 91 addition and 126 deletion
drivers/pinctrl/sirf/pinctrl-sirf.c
浏览文件 @ c5eb757c
......@@ -34,15 +34,19 @@
#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;
struct irq_domain *domain;
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 struct sirfsoc_gpio_chip sgpio_chip;
static DEFINE_SPINLOCK(sgpio_lock);
static struct sirfsoc_pin_group *sirfsoc_pin_groups;
......@@ -258,32 +262,12 @@ static struct pinctrl_desc sirfsoc_pinmux_desc = {
/*
* 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 struct pinctrl_gpio_range sirfsoc_gpio_ranges = {
.name = "sirfsoc-gpio*",
.id = 0,
.base = 0,
.pin_base = 0,
.npins = SIRFSOC_GPIO_BANK_SIZE * SIRFSOC_GPIO_NO_OF_BANKS,
};
static void __iomem *sirfsoc_rsc_of_iomap(void)
......@@ -303,19 +287,19 @@ 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)
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 (gc != &sgpio_chip.chip.gc)
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 +315,6 @@ 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);
......@@ -375,10 +358,8 @@ 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]);
}
sirfsoc_gpio_ranges.gc = &sgpio_chip.chip.gc;
pinctrl_add_gpio_range(spmx->pmx, &sirfsoc_gpio_ranges);
dev_info(&pdev->dev, "initialized SIRFSOC pinmux driver\n");
......@@ -464,33 +445,23 @@ 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_bank *sirfsoc_gpio_to_bank(unsigned int gpio)
{
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);
return &sgpio_chip.sgpio_bank[gpio / SIRFSOC_GPIO_BANK_SIZE];
}
static inline int sirfsoc_gpio_to_offset(unsigned int gpio)
static int sirfsoc_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
{
return gpio % SIRFSOC_GPIO_BANK_SIZE;
return irq_create_mapping(sgpio_chip.domain, offset);
}
static inline struct sirfsoc_gpio_bank *sirfsoc_gpio_to_bank(unsigned int gpio)
static inline int sirfsoc_gpio_to_bankoff(unsigned int gpio)
{
return &sgpio_bank[gpio / SIRFSOC_GPIO_BANK_SIZE];
}
static inline struct sirfsoc_gpio_bank *sirfsoc_gpiochip_to_bank(struct gpio_chip *chip)
{
return container_of(to_of_mm_gpio_chip(chip), struct sirfsoc_gpio_bank, chip);
return gpio % 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);
struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(d->hwirq);
int idx = d->hwirq % SIRFSOC_GPIO_BANK_SIZE;
u32 val, offset;
unsigned long flags;
......@@ -499,9 +470,9 @@ 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.chip.regs + offset);
writel(val, bank->chip.regs + offset);
writel(val, sgpio_chip.chip.regs + offset);
spin_unlock_irqrestore(&sgpio_lock, flags);
}
......@@ -515,24 +486,24 @@ 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.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.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 sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(d->hwirq);
__sirfsoc_gpio_irq_mask(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);
struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(d->hwirq);
int idx = d->hwirq % SIRFSOC_GPIO_BANK_SIZE;
u32 val, offset;
unsigned long flags;
......@@ -541,17 +512,17 @@ 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.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.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);
struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(d->hwirq);
int idx = d->hwirq % SIRFSOC_GPIO_BANK_SIZE;
u32 val, offset;
unsigned long flags;
......@@ -560,7 +531,7 @@ 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.chip.regs + offset);
val &= ~(SIRFSOC_GPIO_CTL_INTR_STS_MASK | SIRFSOC_GPIO_CTL_OUT_EN_MASK);
switch (type) {
......@@ -588,7 +559,7 @@ static int sirfsoc_gpio_irq_type(struct irq_data *d, unsigned type)
break;
}
writel(val, bank->chip.regs + offset);
writel(val, sgpio_chip.chip.regs + offset);
spin_unlock_irqrestore(&sgpio_lock, flags);
......@@ -597,10 +568,8 @@ static int sirfsoc_gpio_irq_type(struct irq_data *d, unsigned type)
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,
if (gpio_lock_as_irq(&sgpio_chip.chip.gc, d->hwirq)) {
dev_err(sgpio_chip.chip.gc.dev,
"unable to lock HW IRQ %lu for IRQ\n",
d->hwirq);
return -EINVAL;
......@@ -610,9 +579,7 @@ static int sirfsoc_gpio_irq_reqres(struct irq_data *d)
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);
gpio_unlock_as_irq(&sgpio_chip.chip.gc, d->hwirq);
}
static struct irq_chip sirfsoc_irq_chip = {
......@@ -634,7 +601,7 @@ static void sirfsoc_gpio_handle_irq(unsigned int irq, struct irq_desc *desc)
chained_irq_enter(chip, desc);
status = readl(bank->chip.regs + SIRFSOC_GPIO_INT_STATUS(bank->id));
status = readl(sgpio_chip.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 +611,7 @@ 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.chip.regs + SIRFSOC_GPIO_CTRL(bank->id, idx));
/*
* Here we must check whether the corresponding GPIO's interrupt
......@@ -653,7 +620,7 @@ 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(sgpio_chip.domain, idx +
bank->id * SIRFSOC_GPIO_BANK_SIZE));
}
......@@ -668,14 +635,14 @@ static inline void sirfsoc_gpio_set_input(struct sirfsoc_gpio_bank *bank, unsign
{
u32 val;
val = readl(bank->chip.regs + ctrl_offset);
val = readl(sgpio_chip.chip.regs + ctrl_offset);
val &= ~SIRFSOC_GPIO_CTL_OUT_EN_MASK;
writel(val, bank->chip.regs + ctrl_offset);
writel(val, sgpio_chip.chip.regs + ctrl_offset);
}
static int sirfsoc_gpio_request(struct gpio_chip *chip, unsigned offset)
{
struct sirfsoc_gpio_bank *bank = sirfsoc_gpiochip_to_bank(chip);
struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(offset);
unsigned long flags;
if (pinctrl_request_gpio(chip->base + offset))
......@@ -697,7 +664,7 @@ 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_gpiochip_to_bank(chip);
struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(offset);
unsigned long flags;
spin_lock_irqsave(&bank->lock, flags);
......@@ -712,8 +679,8 @@ 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_gpiochip_to_bank(chip);
int idx = sirfsoc_gpio_to_offset(gpio);
struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(gpio);
int idx = sirfsoc_gpio_to_bankoff(gpio);
unsigned long flags;
unsigned offset;
......@@ -736,7 +703,7 @@ static inline void sirfsoc_gpio_set_output(struct sirfsoc_gpio_bank *bank, unsig
spin_lock_irqsave(&bank->lock, flags);
out_ctrl = readl(bank->chip.regs + offset);
out_ctrl = readl(sgpio_chip.chip.regs + offset);
if (value)
out_ctrl |= SIRFSOC_GPIO_CTL_DATAOUT_MASK;
else
......@@ -744,15 +711,15 @@ 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.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_gpiochip_to_bank(chip);
int idx = sirfsoc_gpio_to_offset(gpio);
struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(gpio);
int idx = sirfsoc_gpio_to_bankoff(gpio);
u32 offset;
unsigned long flags;
......@@ -769,13 +736,13 @@ 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_gpiochip_to_bank(chip);
struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(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.chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset));
spin_unlock_irqrestore(&bank->lock, flags);
......@@ -785,18 +752,18 @@ 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_gpiochip_to_bank(chip);
struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(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.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.chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset));
spin_unlock_irqrestore(&bank->lock, flags);
}
......@@ -811,7 +778,6 @@ static int sirfsoc_gpio_irq_map(struct irq_domain *d, unsigned int irq,
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;
......@@ -830,10 +796,10 @@ 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.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.chip.regs + offset);
}
}
}
......@@ -846,10 +812,10 @@ 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.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.chip.regs + offset);
}
}
}
......@@ -877,48 +843,47 @@ static int sirfsoc_gpio_probe(struct device_node *np)
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);
&sirfsoc_gpio_irq_simple_ops, &sgpio_chip);
if (!domain) {
pr_err("%s: Failed to create irqdomain\n", np->full_name);
err = -ENOSYS;
goto out;
}
sgpio_chip.chip.gc.request = sirfsoc_gpio_request;
sgpio_chip.chip.gc.free = sirfsoc_gpio_free;
sgpio_chip.chip.gc.direction_input = sirfsoc_gpio_direction_input;
sgpio_chip.chip.gc.get = sirfsoc_gpio_get_value;
sgpio_chip.chip.gc.direction_output = sirfsoc_gpio_direction_output;
sgpio_chip.chip.gc.set = sirfsoc_gpio_set_value;
sgpio_chip.chip.gc.to_irq = sirfsoc_gpio_to_irq;
sgpio_chip.chip.gc.base = 0;
sgpio_chip.chip.gc.ngpio = SIRFSOC_GPIO_BANK_SIZE * SIRFSOC_GPIO_NO_OF_BANKS;
sgpio_chip.chip.gc.label = kstrdup(np->full_name, GFP_KERNEL);
sgpio_chip.chip.gc.of_node = np;
sgpio_chip.chip.gc.of_xlate = sirfsoc_gpio_of_xlate;
sgpio_chip.chip.gc.of_gpio_n_cells = 2;
sgpio_chip.chip.gc.dev = &pdev->dev;
sgpio_chip.chip.regs = regs;
sgpio_chip.is_marco = is_marco;
sgpio_chip.domain = domain;
err = gpiochip_add(&sgpio_chip.chip.gc);
if (err) {
pr_err("%s: error in probe function with status %d\n",
np->full_name, err);
goto out;
}
for (i = 0; i < SIRFSOC_GPIO_NO_OF_BANKS; i++) {
bank = &sgpio_bank[i];
bank = &sgpio_chip.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;
}
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;
irq_set_chained_handler(bank->parent_irq, sirfsoc_gpio_handle_irq);
irq_set_handler_data(bank->parent_irq, bank);
}
......
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