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gpiolib: Add support for the irqdomain which doesn't use irq_fwspec as arg

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Some gpio's parent irqdomain may not use the struct irq_fwspec as
argument, such as msi irqdomain. So rename the callback
populate_parent_fwspec() to populate_parent_alloc_arg() and make it
allocate and populate the specific struct which is needed by the
parent irqdomain.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Link: https://lore.kernel.org/r/20200114082821.14015-3-haokexin@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Kevin Hao
2020-01-14 16:28:19 +08:00
committed by Linus Walleij
parent a564ac35d6
commit 2425876167
5 changed files with 49 additions and 34 deletions
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21
include/linux/gpio/driver.h
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@@ -94,16 +94,15 @@ struct gpio_irq_chip {
unsigned int *parent_type);
/**
* @populate_parent_fwspec:
* @populate_parent_alloc_arg :
*
* This optional callback populates the &struct irq_fwspec for the
* parent's IRQ domain. If this is not specified, then
* This optional callback allocates and populates the specific struct
* for the parent's IRQ domain. If this is not specified, then
* &gpiochip_populate_parent_fwspec_twocell will be used. A four-cell
* variant named &gpiochip_populate_parent_fwspec_fourcell is also
* available.
*/
void (*populate_parent_fwspec)(struct gpio_chip *chip,
struct irq_fwspec *fwspec,
void *(*populate_parent_alloc_arg)(struct gpio_chip *chip,
unsigned int parent_hwirq,
unsigned int parent_type);
@@ -537,26 +536,22 @@ struct bgpio_pdata {
#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
void gpiochip_populate_parent_fwspec_twocell(struct gpio_chip *chip,
struct irq_fwspec *fwspec,
void *gpiochip_populate_parent_fwspec_twocell(struct gpio_chip *chip,
unsigned int parent_hwirq,
unsigned int parent_type);
void gpiochip_populate_parent_fwspec_fourcell(struct gpio_chip *chip,
struct irq_fwspec *fwspec,
void *gpiochip_populate_parent_fwspec_fourcell(struct gpio_chip *chip,
unsigned int parent_hwirq,
unsigned int parent_type);
#else
static inline void gpiochip_populate_parent_fwspec_twocell(struct gpio_chip *chip,
struct irq_fwspec *fwspec,
static inline void *gpiochip_populate_parent_fwspec_twocell(struct gpio_chip *chip,
unsigned int parent_hwirq,
unsigned int parent_type)
{
}
static inline void gpiochip_populate_parent_fwspec_fourcell(struct gpio_chip *chip,
struct irq_fwspec *fwspec,
static inline void *gpiochip_populate_parent_fwspec_fourcell(struct gpio_chip *chip,
unsigned int parent_hwirq,
unsigned int parent_type)
{