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path: root/drivers/mfd/tc3589x.c
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Diffstat (limited to 'drivers/mfd/tc3589x.c')
-rw-r--r--drivers/mfd/tc3589x.c112
1 files changed, 85 insertions, 27 deletions
diff --git a/drivers/mfd/tc3589x.c b/drivers/mfd/tc3589x.c
index b56ba6b4329..8f4c853ca11 100644
--- a/drivers/mfd/tc3589x.c
+++ b/drivers/mfd/tc3589x.c
@@ -9,8 +9,10 @@
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
+#include <linux/irqdomain.h>
#include <linux/slab.h>
#include <linux/i2c.h>
+#include <linux/of.h>
#include <linux/mfd/core.h>
#include <linux/mfd/tc3589x.h>
@@ -145,6 +147,7 @@ static struct mfd_cell tc3589x_dev_gpio[] = {
.name = "tc3589x-gpio",
.num_resources = ARRAY_SIZE(gpio_resources),
.resources = &gpio_resources[0],
+ .of_compatible = "tc3589x-gpio",
},
};
@@ -153,6 +156,7 @@ static struct mfd_cell tc3589x_dev_keypad[] = {
.name = "tc3589x-keypad",
.num_resources = ARRAY_SIZE(keypad_resources),
.resources = &keypad_resources[0],
+ .of_compatible = "tc3589x-keypad",
},
};
@@ -168,8 +172,9 @@ again:
while (status) {
int bit = __ffs(status);
+ int virq = irq_create_mapping(tc3589x->domain, bit);
- handle_nested_irq(tc3589x->irq_base + bit);
+ handle_nested_irq(virq);
status &= ~(1 << bit);
}
@@ -186,38 +191,60 @@ again:
return IRQ_HANDLED;
}
-static int tc3589x_irq_init(struct tc3589x *tc3589x)
+static int tc3589x_irq_map(struct irq_domain *d, unsigned int virq,
+ irq_hw_number_t hwirq)
{
- int base = tc3589x->irq_base;
- int irq;
+ struct tc3589x *tc3589x = d->host_data;
- for (irq = base; irq < base + TC3589x_NR_INTERNAL_IRQS; irq++) {
- irq_set_chip_data(irq, tc3589x);
- irq_set_chip_and_handler(irq, &dummy_irq_chip,
- handle_edge_irq);
- irq_set_nested_thread(irq, 1);
+ irq_set_chip_data(virq, tc3589x);
+ irq_set_chip_and_handler(virq, &dummy_irq_chip,
+ handle_edge_irq);
+ irq_set_nested_thread(virq, 1);
#ifdef CONFIG_ARM
- set_irq_flags(irq, IRQF_VALID);
+ set_irq_flags(virq, IRQF_VALID);
#else
- irq_set_noprobe(irq);
+ irq_set_noprobe(virq);
#endif
- }
return 0;
}
-static void tc3589x_irq_remove(struct tc3589x *tc3589x)
+static void tc3589x_irq_unmap(struct irq_domain *d, unsigned int virq)
{
- int base = tc3589x->irq_base;
- int irq;
-
- for (irq = base; irq < base + TC3589x_NR_INTERNAL_IRQS; irq++) {
#ifdef CONFIG_ARM
- set_irq_flags(irq, 0);
+ set_irq_flags(virq, 0);
#endif
- irq_set_chip_and_handler(irq, NULL, NULL);
- irq_set_chip_data(irq, NULL);
+ irq_set_chip_and_handler(virq, NULL, NULL);
+ irq_set_chip_data(virq, NULL);
+}
+
+static struct irq_domain_ops tc3589x_irq_ops = {
+ .map = tc3589x_irq_map,
+ .unmap = tc3589x_irq_unmap,
+ .xlate = irq_domain_xlate_twocell,
+};
+
+static int tc3589x_irq_init(struct tc3589x *tc3589x, struct device_node *np)
+{
+ int base = tc3589x->irq_base;
+
+ if (base) {
+ tc3589x->domain = irq_domain_add_legacy(
+ NULL, TC3589x_NR_INTERNAL_IRQS, base,
+ 0, &tc3589x_irq_ops, tc3589x);
+ }
+ else {
+ tc3589x->domain = irq_domain_add_linear(
+ np, TC3589x_NR_INTERNAL_IRQS,
+ &tc3589x_irq_ops, tc3589x);
}
+
+ if (!tc3589x->domain) {
+ dev_err(tc3589x->dev, "Failed to create irqdomain\n");
+ return -ENOSYS;
+ }
+
+ return 0;
}
static int tc3589x_chip_init(struct tc3589x *tc3589x)
@@ -263,7 +290,7 @@ static int __devinit tc3589x_device_init(struct tc3589x *tc3589x)
if (blocks & TC3589x_BLOCK_GPIO) {
ret = mfd_add_devices(tc3589x->dev, -1, tc3589x_dev_gpio,
ARRAY_SIZE(tc3589x_dev_gpio), NULL,
- tc3589x->irq_base, NULL);
+ tc3589x->irq_base, tc3589x->domain);
if (ret) {
dev_err(tc3589x->dev, "failed to add gpio child\n");
return ret;
@@ -274,7 +301,7 @@ static int __devinit tc3589x_device_init(struct tc3589x *tc3589x)
if (blocks & TC3589x_BLOCK_KEYPAD) {
ret = mfd_add_devices(tc3589x->dev, -1, tc3589x_dev_keypad,
ARRAY_SIZE(tc3589x_dev_keypad), NULL,
- tc3589x->irq_base, NULL);
+ tc3589x->irq_base, tc3589x->domain);
if (ret) {
dev_err(tc3589x->dev, "failed to keypad child\n");
return ret;
@@ -285,13 +312,47 @@ static int __devinit tc3589x_device_init(struct tc3589x *tc3589x)
return ret;
}
+static int tc3589x_of_probe(struct device_node *np,
+ struct tc3589x_platform_data *pdata)
+{
+ struct device_node *child;
+
+ for_each_child_of_node(np, child) {
+ if (!strcmp(child->name, "tc3589x_gpio")) {
+ pdata->block |= TC3589x_BLOCK_GPIO;
+ }
+ if (!strcmp(child->name, "tc3589x_keypad")) {
+ pdata->block |= TC3589x_BLOCK_KEYPAD;
+ }
+ }
+
+ return 0;
+}
+
static int __devinit tc3589x_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct tc3589x_platform_data *pdata = i2c->dev.platform_data;
+ struct device_node *np = i2c->dev.of_node;
struct tc3589x *tc3589x;
int ret;
+ if (!pdata) {
+ if (np) {
+ pdata = devm_kzalloc(&i2c->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
+
+ ret = tc3589x_of_probe(np, pdata);
+ if (ret)
+ return ret;
+ }
+ else {
+ dev_err(&i2c->dev, "No platform data or DT found\n");
+ return -EINVAL;
+ }
+ }
+
if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA
| I2C_FUNC_SMBUS_I2C_BLOCK))
return -EIO;
@@ -314,7 +375,7 @@ static int __devinit tc3589x_probe(struct i2c_client *i2c,
if (ret)
goto out_free;
- ret = tc3589x_irq_init(tc3589x);
+ ret = tc3589x_irq_init(tc3589x, np);
if (ret)
goto out_free;
@@ -323,7 +384,7 @@ static int __devinit tc3589x_probe(struct i2c_client *i2c,
"tc3589x", tc3589x);
if (ret) {
dev_err(tc3589x->dev, "failed to request IRQ: %d\n", ret);
- goto out_removeirq;
+ goto out_free;
}
ret = tc3589x_device_init(tc3589x);
@@ -336,8 +397,6 @@ static int __devinit tc3589x_probe(struct i2c_client *i2c,
out_freeirq:
free_irq(tc3589x->i2c->irq, tc3589x);
-out_removeirq:
- tc3589x_irq_remove(tc3589x);
out_free:
kfree(tc3589x);
return ret;
@@ -350,7 +409,6 @@ static int __devexit tc3589x_remove(struct i2c_client *client)
mfd_remove_devices(tc3589x->dev);
free_irq(tc3589x->i2c->irq, tc3589x);
- tc3589x_irq_remove(tc3589x);
kfree(tc3589x);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-01 00:59:24 +0000