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Message-Id: <1430916484-7756-1-git-send-email-linus.walleij@linaro.org>
Date: Wed, 6 May 2015 14:48:04 +0200
From: Linus Walleij <linus.walleij@...aro.org>
To: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc: linux-gpio@...r.kernel.org,
Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH] pinctrl: nomadik: assign chips dynamically
Assign GPIO chip and irqchip to the GPIO container dynamically,
so we can set a unique name for each GPIO irqchip and see what
chip the hwirq offset actually relates to.
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
---
drivers/pinctrl/nomadik/pinctrl-nomadik.c | 61 +++++++++++++++----------------
1 file changed, 30 insertions(+), 31 deletions(-)
diff --git a/drivers/pinctrl/nomadik/pinctrl-nomadik.c b/drivers/pinctrl/nomadik/pinctrl-nomadik.c
index a6a22054c0ba..c37093c8659c 100644
--- a/drivers/pinctrl/nomadik/pinctrl-nomadik.c
+++ b/drivers/pinctrl/nomadik/pinctrl-nomadik.c
@@ -246,6 +246,7 @@ enum nmk_gpio_slpm {
struct nmk_gpio_chip {
struct gpio_chip chip;
+ struct irq_chip irqchip;
void __iomem *addr;
struct clk *clk;
unsigned int bank;
@@ -842,18 +843,6 @@ static void nmk_gpio_irq_shutdown(struct irq_data *d)
clk_disable(nmk_chip->clk);
}
-static struct irq_chip nmk_gpio_irq_chip = {
- .name = "Nomadik-GPIO",
- .irq_ack = nmk_gpio_irq_ack,
- .irq_mask = nmk_gpio_irq_mask,
- .irq_unmask = nmk_gpio_irq_unmask,
- .irq_set_type = nmk_gpio_irq_set_type,
- .irq_set_wake = nmk_gpio_irq_set_wake,
- .irq_startup = nmk_gpio_irq_startup,
- .irq_shutdown = nmk_gpio_irq_shutdown,
- .flags = IRQCHIP_MASK_ON_SUSPEND,
-};
-
static void __nmk_gpio_irq_handler(unsigned int irq, struct irq_desc *desc,
u32 status)
{
@@ -1077,18 +1066,6 @@ static inline void nmk_gpio_dbg_show_one(struct seq_file *s,
#define nmk_gpio_dbg_show NULL
#endif
-/* This structure is replicated for each GPIO block allocated at probe time */
-static struct gpio_chip nmk_gpio_template = {
- .request = nmk_gpio_request,
- .free = nmk_gpio_free,
- .direction_input = nmk_gpio_make_input,
- .get = nmk_gpio_get_input,
- .direction_output = nmk_gpio_make_output,
- .set = nmk_gpio_set_output,
- .dbg_show = nmk_gpio_dbg_show,
- .can_sleep = false,
-};
-
void nmk_gpio_clocks_enable(void)
{
int i;
@@ -1190,6 +1167,7 @@ static int nmk_gpio_probe(struct platform_device *dev)
struct device_node *np = dev->dev.of_node;
struct nmk_gpio_chip *nmk_chip;
struct gpio_chip *chip;
+ struct irq_chip *irqchip;
struct resource *res;
struct clk *clk;
int latent_irq;
@@ -1236,19 +1214,40 @@ static int nmk_gpio_probe(struct platform_device *dev)
nmk_chip->bank = dev->id;
nmk_chip->clk = clk;
nmk_chip->addr = base;
- nmk_chip->chip = nmk_gpio_template;
nmk_chip->parent_irq = irq;
nmk_chip->latent_parent_irq = latent_irq;
nmk_chip->sleepmode = supports_sleepmode;
spin_lock_init(&nmk_chip->lock);
chip = &nmk_chip->chip;
+ chip->request = nmk_gpio_request;
+ chip->free = nmk_gpio_free;
+ chip->direction_input = nmk_gpio_make_input;
+ chip->get = nmk_gpio_get_input;
+ chip->direction_output = nmk_gpio_make_output;
+ chip->set = nmk_gpio_set_output;
+ chip->dbg_show = nmk_gpio_dbg_show;
+ chip->can_sleep = false;
chip->base = dev->id * NMK_GPIO_PER_CHIP;
chip->ngpio = NMK_GPIO_PER_CHIP;
chip->label = dev_name(&dev->dev);
chip->dev = &dev->dev;
chip->owner = THIS_MODULE;
+ irqchip = &nmk_chip->irqchip;
+ irqchip->irq_ack = nmk_gpio_irq_ack;
+ irqchip->irq_mask = nmk_gpio_irq_mask;
+ irqchip->irq_unmask = nmk_gpio_irq_unmask;
+ irqchip->irq_set_type = nmk_gpio_irq_set_type;
+ irqchip->irq_set_wake = nmk_gpio_irq_set_wake;
+ irqchip->irq_startup = nmk_gpio_irq_startup;
+ irqchip->irq_shutdown = nmk_gpio_irq_shutdown;
+ irqchip->flags = IRQCHIP_MASK_ON_SUSPEND;
+ irqchip->name = kasprintf(GFP_KERNEL, "nmk%u-%u-%u",
+ dev->id,
+ chip->base,
+ chip->base + chip->ngpio - 1);
+
clk_enable(nmk_chip->clk);
nmk_chip->lowemi = readl_relaxed(nmk_chip->addr + NMK_GPIO_LOWEMI);
clk_disable(nmk_chip->clk);
@@ -1269,8 +1268,8 @@ static int nmk_gpio_probe(struct platform_device *dev)
* handler will perform the actual work of handling the parent
* interrupt.
*/
- ret = gpiochip_irqchip_add(&nmk_chip->chip,
- &nmk_gpio_irq_chip,
+ ret = gpiochip_irqchip_add(chip,
+ irqchip,
0,
handle_edge_irq,
IRQ_TYPE_EDGE_FALLING);
@@ -1280,13 +1279,13 @@ static int nmk_gpio_probe(struct platform_device *dev)
return -ENODEV;
}
/* Then register the chain on the parent IRQ */
- gpiochip_set_chained_irqchip(&nmk_chip->chip,
- &nmk_gpio_irq_chip,
+ gpiochip_set_chained_irqchip(chip,
+ irqchip,
nmk_chip->parent_irq,
nmk_gpio_irq_handler);
if (nmk_chip->latent_parent_irq > 0)
- gpiochip_set_chained_irqchip(&nmk_chip->chip,
- &nmk_gpio_irq_chip,
+ gpiochip_set_chained_irqchip(chip,
+ irqchip,
nmk_chip->latent_parent_irq,
nmk_gpio_latent_irq_handler);
--
1.9.3
--
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