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path: root/drivers/mfd/stmpe.c
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Diffstat (limited to 'drivers/mfd/stmpe.c')
-rw-r--r--drivers/mfd/stmpe.c86
1 files changed, 38 insertions, 48 deletions
diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c
index 1dd39483e7c1..3c5c2f157f52 100644
--- a/drivers/mfd/stmpe.c
+++ b/drivers/mfd/stmpe.c
@@ -8,14 +8,13 @@
*/
#include <linux/err.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/export.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/of.h>
-#include <linux/of_gpio.h>
#include <linux/pm.h>
#include <linux/slab.h>
#include <linux/mfd/core.h>
@@ -30,17 +29,12 @@
* @irq_trigger: IRQ trigger to use for the interrupt to the host
* @autosleep: bool to enable/disable stmpe autosleep
* @autosleep_timeout: inactivity timeout in milliseconds for autosleep
- * @irq_over_gpio: true if gpio is used to get irq
- * @irq_gpio: gpio number over which irq will be requested (significant only if
- * irq_over_gpio is true)
*/
struct stmpe_platform_data {
int id;
unsigned int blocks;
unsigned int irq_trigger;
bool autosleep;
- bool irq_over_gpio;
- int irq_gpio;
int autosleep_timeout;
};
@@ -1095,7 +1089,7 @@ static irqreturn_t stmpe_irq(int irq, void *data)
if (variant->id_val == STMPE801_ID ||
variant->id_val == STMPE1600_ID) {
- int base = irq_create_mapping(stmpe->domain, 0);
+ int base = irq_find_mapping(stmpe->domain, 0);
handle_nested_irq(base);
return IRQ_HANDLED;
@@ -1123,7 +1117,7 @@ static irqreturn_t stmpe_irq(int irq, void *data)
while (status) {
int bit = __ffs(status);
int line = bank * 8 + bit;
- int nestedirq = irq_create_mapping(stmpe->domain, line);
+ int nestedirq = irq_find_mapping(stmpe->domain, line);
handle_nested_irq(nestedirq);
status &= ~(1 << bit);
@@ -1225,8 +1219,8 @@ static int stmpe_irq_init(struct stmpe *stmpe, struct device_node *np)
int base = 0;
int num_irqs = stmpe->variant->num_irqs;
- stmpe->domain = irq_domain_add_simple(np, num_irqs, base,
- &stmpe_irq_ops, stmpe);
+ stmpe->domain = irq_domain_create_simple(of_fwnode_handle(np), num_irqs,
+ base, &stmpe_irq_ops, stmpe);
if (!stmpe->domain) {
dev_err(stmpe->dev, "Failed to create irqdomain\n");
return -ENOSYS;
@@ -1349,32 +1343,22 @@ static void stmpe_of_probe(struct stmpe_platform_data *pdata,
if (pdata->id < 0)
pdata->id = -1;
- pdata->irq_gpio = of_get_named_gpio_flags(np, "irq-gpio", 0,
- &pdata->irq_trigger);
- if (gpio_is_valid(pdata->irq_gpio))
- pdata->irq_over_gpio = 1;
- else
- pdata->irq_trigger = IRQF_TRIGGER_NONE;
-
of_property_read_u32(np, "st,autosleep-timeout",
&pdata->autosleep_timeout);
pdata->autosleep = (pdata->autosleep_timeout) ? true : false;
- for_each_child_of_node(np, child) {
- if (of_node_name_eq(child, "stmpe_gpio")) {
+ for_each_available_child_of_node(np, child) {
+ if (of_device_is_compatible(child, stmpe_gpio_cell.of_compatible))
pdata->blocks |= STMPE_BLOCK_GPIO;
- } else if (of_node_name_eq(child, "stmpe_keypad")) {
+ else if (of_device_is_compatible(child, stmpe_keypad_cell.of_compatible))
pdata->blocks |= STMPE_BLOCK_KEYPAD;
- } else if (of_node_name_eq(child, "stmpe_touchscreen")) {
+ else if (of_device_is_compatible(child, stmpe_ts_cell.of_compatible))
pdata->blocks |= STMPE_BLOCK_TOUCHSCREEN;
- } else if (of_node_name_eq(child, "stmpe_adc")) {
+ else if (of_device_is_compatible(child, stmpe_adc_cell.of_compatible))
pdata->blocks |= STMPE_BLOCK_ADC;
- } else if (of_node_name_eq(child, "stmpe_pwm")) {
+ else if (of_device_is_compatible(child, stmpe_pwm_cell.of_compatible))
pdata->blocks |= STMPE_BLOCK_PWM;
- } else if (of_node_name_eq(child, "stmpe_rotator")) {
- pdata->blocks |= STMPE_BLOCK_ROTATOR;
- }
}
}
@@ -1384,6 +1368,7 @@ int stmpe_probe(struct stmpe_client_info *ci, enum stmpe_partnum partnum)
struct stmpe_platform_data *pdata;
struct device_node *np = ci->dev->of_node;
struct stmpe *stmpe;
+ struct gpio_desc *irq_gpio;
int ret;
u32 val;
@@ -1393,7 +1378,7 @@ int stmpe_probe(struct stmpe_client_info *ci, enum stmpe_partnum partnum)
stmpe_of_probe(pdata, np);
- if (of_find_property(np, "interrupts", NULL) == NULL)
+ if (!of_property_present(np, "interrupts"))
ci->irq = -1;
stmpe = devm_kzalloc(ci->dev, sizeof(struct stmpe), GFP_KERNEL);
@@ -1437,18 +1422,20 @@ int stmpe_probe(struct stmpe_client_info *ci, enum stmpe_partnum partnum)
if (ci->init)
ci->init(stmpe);
- if (pdata->irq_over_gpio) {
- ret = devm_gpio_request_one(ci->dev, pdata->irq_gpio,
- GPIOF_DIR_IN, "stmpe");
- if (ret) {
- dev_err(stmpe->dev, "failed to request IRQ GPIO: %d\n",
- ret);
- return ret;
- }
+ irq_gpio = devm_gpiod_get_optional(ci->dev, "irq", GPIOD_ASIS);
+ ret = PTR_ERR_OR_ZERO(irq_gpio);
+ if (ret) {
+ dev_err(stmpe->dev, "failed to request IRQ GPIO: %d\n", ret);
+ return ret;
+ }
- stmpe->irq = gpio_to_irq(pdata->irq_gpio);
+ if (irq_gpio) {
+ stmpe->irq = gpiod_to_irq(irq_gpio);
+ pdata->irq_trigger = gpiod_is_active_low(irq_gpio) ?
+ IRQF_TRIGGER_LOW : IRQF_TRIGGER_HIGH;
} else {
stmpe->irq = ci->irq;
+ pdata->irq_trigger = IRQF_TRIGGER_NONE;
}
if (stmpe->irq < 0) {
@@ -1495,22 +1482,24 @@ int stmpe_probe(struct stmpe_client_info *ci, enum stmpe_partnum partnum)
return ret;
}
+EXPORT_SYMBOL_GPL(stmpe_probe);
-int stmpe_remove(struct stmpe *stmpe)
+void stmpe_remove(struct stmpe *stmpe)
{
- if (!IS_ERR(stmpe->vio))
+ if (stmpe->domain)
+ irq_domain_remove(stmpe->domain);
+
+ if (!IS_ERR(stmpe->vio) && regulator_is_enabled(stmpe->vio))
regulator_disable(stmpe->vio);
- if (!IS_ERR(stmpe->vcc))
+ if (!IS_ERR(stmpe->vcc) && regulator_is_enabled(stmpe->vcc))
regulator_disable(stmpe->vcc);
__stmpe_disable(stmpe, STMPE_BLOCK_ADC);
mfd_remove_devices(stmpe->dev);
-
- return 0;
}
+EXPORT_SYMBOL_GPL(stmpe_remove);
-#ifdef CONFIG_PM
static int stmpe_suspend(struct device *dev)
{
struct stmpe *stmpe = dev_get_drvdata(dev);
@@ -1531,8 +1520,9 @@ static int stmpe_resume(struct device *dev)
return 0;
}
-const struct dev_pm_ops stmpe_dev_pm_ops = {
- .suspend = stmpe_suspend,
- .resume = stmpe_resume,
-};
-#endif
+EXPORT_GPL_SIMPLE_DEV_PM_OPS(stmpe_dev_pm_ops,
+ stmpe_suspend, stmpe_resume);
+
+MODULE_DESCRIPTION("STMPE Core driver");
+MODULE_AUTHOR("Rabin Vincent <rabin.vincent@stericsson.com>");
+MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2025-12-24 21:51:07 +0000