*/
#include <linux/module.h>
-#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/errno.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/input.h>
+#include <linux/input/matrix_keypad.h>
#include <linux/slab.h>
#include <linux/pm_runtime.h>
-#include <linux/platform_data/omap4-keypad.h>
-
/* OMAP4 registers */
#define OMAP4_KBD_REVISION 0x00
#define OMAP4_KBD_SYSCONFIG 0x10
#define OMAP4_KBD_FULLCODE63_32 0x48
/* OMAP4 bit definitions */
-#define OMAP4_DEF_IRQENABLE_EVENTEN (1 << 0)
-#define OMAP4_DEF_IRQENABLE_LONGKEY (1 << 1)
-#define OMAP4_DEF_IRQENABLE_TIMEOUTEN (1 << 2)
-#define OMAP4_DEF_WUP_EVENT_ENA (1 << 0)
-#define OMAP4_DEF_WUP_LONG_KEY_ENA (1 << 1)
-#define OMAP4_DEF_CTRL_NOSOFTMODE (1 << 1)
-#define OMAP4_DEF_CTRLPTVVALUE (1 << 2)
-#define OMAP4_DEF_CTRLPTV (1 << 1)
+#define OMAP4_DEF_IRQENABLE_EVENTEN BIT(0)
+#define OMAP4_DEF_IRQENABLE_LONGKEY BIT(1)
+#define OMAP4_DEF_WUP_EVENT_ENA BIT(0)
+#define OMAP4_DEF_WUP_LONG_KEY_ENA BIT(1)
+#define OMAP4_DEF_CTRL_NOSOFTMODE BIT(1)
+#define OMAP4_DEF_CTRL_PTV_SHIFT 2
/* OMAP4 values */
-#define OMAP4_VAL_IRQDISABLE 0x00
-#define OMAP4_VAL_DEBOUNCINGTIME 0x07
-#define OMAP4_VAL_FUNCTIONALCFG 0x1E
-
-#define OMAP4_MASK_IRQSTATUSDISABLE 0xFFFF
+#define OMAP4_VAL_IRQDISABLE 0x0
+#define OMAP4_VAL_DEBOUNCINGTIME 0x7
+#define OMAP4_VAL_PVT 0x7
enum {
KBD_REVISION_OMAP4 = 0,
struct input_dev *input;
void __iomem *base;
+ bool irq_wake_enabled;
unsigned int irq;
unsigned int rows;
}
-/* Interrupt handler */
-static irqreturn_t omap4_keypad_interrupt(int irq, void *dev_id)
+/* Interrupt handlers */
+static irqreturn_t omap4_keypad_irq_handler(int irq, void *dev_id)
+{
+ struct omap4_keypad *keypad_data = dev_id;
+
+ if (kbd_read_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS)) {
+ /* Disable interrupts */
+ kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQENABLE,
+ OMAP4_VAL_IRQDISABLE);
+ return IRQ_WAKE_THREAD;
+ }
+
+ return IRQ_NONE;
+}
+
+static irqreturn_t omap4_keypad_irq_thread_fn(int irq, void *dev_id)
{
struct omap4_keypad *keypad_data = dev_id;
struct input_dev *input_dev = keypad_data->input;
unsigned int col, row, code, changed;
u32 *new_state = (u32 *) key_state;
- /* Disable interrupts */
- kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQENABLE,
- OMAP4_VAL_IRQDISABLE);
-
*new_state = kbd_readl(keypad_data, OMAP4_KBD_FULLCODE31_0);
*(new_state + 1) = kbd_readl(keypad_data, OMAP4_KBD_FULLCODE63_32);
disable_irq(keypad_data->irq);
kbd_writel(keypad_data, OMAP4_KBD_CTRL,
- OMAP4_VAL_FUNCTIONALCFG);
+ OMAP4_DEF_CTRL_NOSOFTMODE |
+ (OMAP4_VAL_PVT << OMAP4_DEF_CTRL_PTV_SHIFT));
kbd_writel(keypad_data, OMAP4_KBD_DEBOUNCINGTIME,
OMAP4_VAL_DEBOUNCINGTIME);
+ /* clear pending interrupts */
kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS,
- OMAP4_VAL_IRQDISABLE);
+ kbd_read_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS));
kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQENABLE,
OMAP4_DEF_IRQENABLE_EVENTEN |
OMAP4_DEF_IRQENABLE_LONGKEY);
pm_runtime_put_sync(input->dev.parent);
}
-#ifdef CONFIG_OF
static int omap4_keypad_parse_dt(struct device *dev,
struct omap4_keypad *keypad_data)
{
return 0;
}
-#else
-static inline int omap4_keypad_parse_dt(struct device *dev,
- struct omap4_keypad *keypad_data)
-{
- return -ENOSYS;
-}
-#endif
static int omap4_keypad_probe(struct platform_device *pdev)
{
- const struct omap4_keypad_platform_data *pdata =
- dev_get_platdata(&pdev->dev);
- const struct matrix_keymap_data *keymap_data =
- pdata ? pdata->keymap_data : NULL;
struct omap4_keypad *keypad_data;
struct input_dev *input_dev;
struct resource *res;
keypad_data->irq = irq;
- if (pdata) {
- keypad_data->rows = pdata->rows;
- keypad_data->cols = pdata->cols;
- } else {
- error = omap4_keypad_parse_dt(&pdev->dev, keypad_data);
- if (error)
- return error;
- }
+ error = omap4_keypad_parse_dt(&pdev->dev, keypad_data);
+ if (error)
+ goto err_free_keypad;
res = request_mem_region(res->start, resource_size(res), pdev->name);
if (!res) {
goto err_free_input;
}
- error = matrix_keypad_build_keymap(keymap_data, NULL,
+ error = matrix_keypad_build_keymap(NULL, NULL,
keypad_data->rows, keypad_data->cols,
keypad_data->keymap, input_dev);
if (error) {
goto err_free_keymap;
}
- error = request_irq(keypad_data->irq, omap4_keypad_interrupt,
- IRQF_TRIGGER_RISING,
- "omap4-keypad", keypad_data);
+ error = request_threaded_irq(keypad_data->irq, omap4_keypad_irq_handler,
+ omap4_keypad_irq_thread_fn, 0,
+ "omap4-keypad", keypad_data);
if (error) {
dev_err(&pdev->dev, "failed to register interrupt\n");
goto err_free_input;
}
+ device_init_wakeup(&pdev->dev, true);
pm_runtime_put_sync(&pdev->dev);
error = input_register_device(keypad_data->input);
err_pm_disable:
pm_runtime_disable(&pdev->dev);
+ device_init_wakeup(&pdev->dev, false);
free_irq(keypad_data->irq, keypad_data);
err_free_keymap:
kfree(keypad_data->keymap);
pm_runtime_disable(&pdev->dev);
+ device_init_wakeup(&pdev->dev, false);
+
input_unregister_device(keypad_data->input);
iounmap(keypad_data->base);
kfree(keypad_data->keymap);
kfree(keypad_data);
- platform_set_drvdata(pdev, NULL);
-
return 0;
}
-#ifdef CONFIG_OF
static const struct of_device_id omap_keypad_dt_match[] = {
{ .compatible = "ti,omap4-keypad" },
{},
};
MODULE_DEVICE_TABLE(of, omap_keypad_dt_match);
+
+#ifdef CONFIG_PM_SLEEP
+static int omap4_keypad_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct omap4_keypad *keypad_data = platform_get_drvdata(pdev);
+ int error;
+
+ if (device_may_wakeup(&pdev->dev)) {
+ error = enable_irq_wake(keypad_data->irq);
+ if (!error)
+ keypad_data->irq_wake_enabled = true;
+ }
+
+ return 0;
+}
+
+static int omap4_keypad_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct omap4_keypad *keypad_data = platform_get_drvdata(pdev);
+
+ if (device_may_wakeup(&pdev->dev) && keypad_data->irq_wake_enabled) {
+ disable_irq_wake(keypad_data->irq);
+ keypad_data->irq_wake_enabled = false;
+ }
+
+ return 0;
+}
#endif
+static SIMPLE_DEV_PM_OPS(omap4_keypad_pm_ops,
+ omap4_keypad_suspend, omap4_keypad_resume);
+
static struct platform_driver omap4_keypad_driver = {
.probe = omap4_keypad_probe,
.remove = omap4_keypad_remove,
.driver = {
.name = "omap4-keypad",
- .owner = THIS_MODULE,
- .of_match_table = of_match_ptr(omap_keypad_dt_match),
+ .pm = &omap4_keypad_pm_ops,
+ .of_match_table = omap_keypad_dt_match,
},
};
module_platform_driver(omap4_keypad_driver);
projects / firefly-linux-kernel-4.4.55.git / blobdiff