mfd: Convert tps6586x to irq_domain
Allocate the irq base if it base is not porvided i.e. in case of device tree invocation of this driver. Convert the tps6586x driver to irq domain, using a legacy IRQ mapping if an irq_base is specified in platform data or dynamically allocated and otherwise using a linear mapping. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Laxman Dewangan
Samuel Ortiz
parent
210afeecd4
commit
605511a848
@ -17,12 +17,14 @@
|
||||
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/irq.h>
|
||||
#include <linux/irqdomain.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/regmap.h>
|
||||
#include <linux/regulator/of_regulator.h>
|
||||
#include <linux/regulator/machine.h>
|
||||
@ -116,6 +118,7 @@ struct tps6586x {
|
||||
int irq_base;
|
||||
u32 irq_en;
|
||||
u8 mask_reg[5];
|
||||
struct irq_domain *irq_domain;
|
||||
};
|
||||
|
||||
static inline struct tps6586x *dev_to_tps6586x(struct device *dev)
|
||||
@ -184,6 +187,14 @@ int tps6586x_update(struct device *dev, int reg, uint8_t val, uint8_t mask)
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(tps6586x_update);
|
||||
|
||||
int tps6586x_irq_get_virq(struct device *dev, int irq)
|
||||
{
|
||||
struct tps6586x *tps6586x = dev_to_tps6586x(dev);
|
||||
|
||||
return irq_create_mapping(tps6586x->irq_domain, irq);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(tps6586x_irq_get_virq);
|
||||
|
||||
static int __remove_subdev(struct device *dev, void *unused)
|
||||
{
|
||||
platform_device_unregister(to_platform_device(dev));
|
||||
@ -205,7 +216,7 @@ static void tps6586x_irq_lock(struct irq_data *data)
|
||||
static void tps6586x_irq_enable(struct irq_data *irq_data)
|
||||
{
|
||||
struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
|
||||
unsigned int __irq = irq_data->irq - tps6586x->irq_base;
|
||||
unsigned int __irq = irq_data->hwirq;
|
||||
const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq];
|
||||
|
||||
tps6586x->mask_reg[data->mask_reg] &= ~data->mask_mask;
|
||||
@ -216,7 +227,7 @@ static void tps6586x_irq_disable(struct irq_data *irq_data)
|
||||
{
|
||||
struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
|
||||
|
||||
unsigned int __irq = irq_data->irq - tps6586x->irq_base;
|
||||
unsigned int __irq = irq_data->hwirq;
|
||||
const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq];
|
||||
|
||||
tps6586x->mask_reg[data->mask_reg] |= data->mask_mask;
|
||||
@ -239,6 +250,39 @@ static void tps6586x_irq_sync_unlock(struct irq_data *data)
|
||||
mutex_unlock(&tps6586x->irq_lock);
|
||||
}
|
||||
|
||||
static struct irq_chip tps6586x_irq_chip = {
|
||||
.name = "tps6586x",
|
||||
.irq_bus_lock = tps6586x_irq_lock,
|
||||
.irq_bus_sync_unlock = tps6586x_irq_sync_unlock,
|
||||
.irq_disable = tps6586x_irq_disable,
|
||||
.irq_enable = tps6586x_irq_enable,
|
||||
};
|
||||
|
||||
static int tps6586x_irq_map(struct irq_domain *h, unsigned int virq,
|
||||
irq_hw_number_t hw)
|
||||
{
|
||||
struct tps6586x *tps6586x = h->host_data;
|
||||
|
||||
irq_set_chip_data(virq, tps6586x);
|
||||
irq_set_chip_and_handler(virq, &tps6586x_irq_chip, handle_simple_irq);
|
||||
irq_set_nested_thread(virq, 1);
|
||||
|
||||
/* ARM needs us to explicitly flag the IRQ as valid
|
||||
* and will set them noprobe when we do so. */
|
||||
#ifdef CONFIG_ARM
|
||||
set_irq_flags(virq, IRQF_VALID);
|
||||
#else
|
||||
irq_set_noprobe(virq);
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct irq_domain_ops tps6586x_domain_ops = {
|
||||
.map = tps6586x_irq_map,
|
||||
.xlate = irq_domain_xlate_twocell,
|
||||
};
|
||||
|
||||
static irqreturn_t tps6586x_irq(int irq, void *data)
|
||||
{
|
||||
struct tps6586x *tps6586x = data;
|
||||
@ -259,7 +303,8 @@ static irqreturn_t tps6586x_irq(int irq, void *data)
|
||||
int i = __ffs(acks);
|
||||
|
||||
if (tps6586x->irq_en & (1 << i))
|
||||
handle_nested_irq(tps6586x->irq_base + i);
|
||||
handle_nested_irq(
|
||||
irq_find_mapping(tps6586x->irq_domain, i));
|
||||
|
||||
acks &= ~(1 << i);
|
||||
}
|
||||
@ -272,11 +317,8 @@ static int __devinit tps6586x_irq_init(struct tps6586x *tps6586x, int irq,
|
||||
{
|
||||
int i, ret;
|
||||
u8 tmp[4];
|
||||
|
||||
if (!irq_base) {
|
||||
dev_warn(tps6586x->dev, "No interrupt support on IRQ base\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
int new_irq_base;
|
||||
int irq_num = ARRAY_SIZE(tps6586x_irqs);
|
||||
|
||||
mutex_init(&tps6586x->irq_lock);
|
||||
for (i = 0; i < 5; i++) {
|
||||
@ -286,25 +328,24 @@ static int __devinit tps6586x_irq_init(struct tps6586x *tps6586x, int irq,
|
||||
|
||||
tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1, sizeof(tmp), tmp);
|
||||
|
||||
tps6586x->irq_base = irq_base;
|
||||
|
||||
tps6586x->irq_chip.name = "tps6586x";
|
||||
tps6586x->irq_chip.irq_enable = tps6586x_irq_enable;
|
||||
tps6586x->irq_chip.irq_disable = tps6586x_irq_disable;
|
||||
tps6586x->irq_chip.irq_bus_lock = tps6586x_irq_lock;
|
||||
tps6586x->irq_chip.irq_bus_sync_unlock = tps6586x_irq_sync_unlock;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(tps6586x_irqs); i++) {
|
||||
int __irq = i + tps6586x->irq_base;
|
||||
irq_set_chip_data(__irq, tps6586x);
|
||||
irq_set_chip_and_handler(__irq, &tps6586x->irq_chip,
|
||||
handle_simple_irq);
|
||||
irq_set_nested_thread(__irq, 1);
|
||||
#ifdef CONFIG_ARM
|
||||
set_irq_flags(__irq, IRQF_VALID);
|
||||
#endif
|
||||
if (irq_base > 0) {
|
||||
new_irq_base = irq_alloc_descs(irq_base, 0, irq_num, -1);
|
||||
if (new_irq_base < 0) {
|
||||
dev_err(tps6586x->dev,
|
||||
"Failed to alloc IRQs: %d\n", new_irq_base);
|
||||
return new_irq_base;
|
||||
}
|
||||
} else {
|
||||
new_irq_base = 0;
|
||||
}
|
||||
|
||||
tps6586x->irq_domain = irq_domain_add_simple(tps6586x->dev->of_node,
|
||||
irq_num, new_irq_base, &tps6586x_domain_ops,
|
||||
tps6586x);
|
||||
if (!tps6586x->irq_domain) {
|
||||
dev_err(tps6586x->dev, "Failed to create IRQ domain\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
ret = request_threaded_irq(irq, NULL, tps6586x_irq, IRQF_ONESHOT,
|
||||
"tps6586x", tps6586x);
|
||||
|
||||
|
||||
@ -93,5 +93,6 @@ extern int tps6586x_set_bits(struct device *dev, int reg, uint8_t bit_mask);
|
||||
extern int tps6586x_clr_bits(struct device *dev, int reg, uint8_t bit_mask);
|
||||
extern int tps6586x_update(struct device *dev, int reg, uint8_t val,
|
||||
uint8_t mask);
|
||||
extern int tps6586x_irq_get_virq(struct device *dev, int irq);
|
||||
|
||||
#endif /*__LINUX_MFD_TPS6586X_H */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user