diff options
Diffstat (limited to 'drivers/input/keyboard')
| -rw-r--r-- | drivers/input/keyboard/matrix_keypad.c | 2 | ||||
| -rw-r--r-- | drivers/input/keyboard/omap4-keypad.c | 34 | ||||
| -rw-r--r-- | drivers/input/keyboard/st-keyscan.c | 4 |
3 files changed, 21 insertions, 19 deletions
diff --git a/drivers/input/keyboard/matrix_keypad.c b/drivers/input/keyboard/matrix_keypad.c index c64d87442a62..2e12e31f45c5 100644 --- a/drivers/input/keyboard/matrix_keypad.c +++ b/drivers/input/keyboard/matrix_keypad.c @@ -220,7 +220,7 @@ static void matrix_keypad_stop(struct input_dev *dev) keypad->stopped = true; spin_unlock_irq(&keypad->lock); - flush_work(&keypad->work.work); + flush_delayed_work(&keypad->work); /* * matrix_keypad_scan() will leave IRQs enabled; * we should disable them now. diff --git a/drivers/input/keyboard/omap4-keypad.c b/drivers/input/keyboard/omap4-keypad.c index 6639b2b8528a..3d2c60c8de83 100644 --- a/drivers/input/keyboard/omap4-keypad.c +++ b/drivers/input/keyboard/omap4-keypad.c @@ -60,8 +60,18 @@ /* OMAP4 values */ #define OMAP4_VAL_IRQDISABLE 0x0 -#define OMAP4_VAL_DEBOUNCINGTIME 0x7 -#define OMAP4_VAL_PVT 0x7 + +/* + * Errata i689: If a key is released for a time shorter than debounce time, + * the keyboard will idle and never detect the key release. The workaround + * is to use at least a 12ms debounce time. See omap5432 TRM chapter + * "26.4.6.2 Keyboard Controller Timer" for more information. + */ +#define OMAP4_KEYPAD_PTV_DIV_128 0x6 +#define OMAP4_KEYPAD_DEBOUNCINGTIME_MS(dbms, ptv) \ + ((((dbms) * 1000) / ((1 << ((ptv) + 1)) * (1000000 / 32768))) - 1) +#define OMAP4_VAL_DEBOUNCINGTIME_16MS \ + OMAP4_KEYPAD_DEBOUNCINGTIME_MS(16, OMAP4_KEYPAD_PTV_DIV_128) enum { KBD_REVISION_OMAP4 = 0, @@ -116,12 +126,8 @@ 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); + if (kbd_read_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS)) return IRQ_WAKE_THREAD; - } return IRQ_NONE; } @@ -163,11 +169,6 @@ static irqreturn_t omap4_keypad_irq_thread_fn(int irq, void *dev_id) kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS, kbd_read_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS)); - /* enable interrupts */ - kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQENABLE, - OMAP4_DEF_IRQENABLE_EVENTEN | - OMAP4_DEF_IRQENABLE_LONGKEY); - return IRQ_HANDLED; } @@ -181,9 +182,9 @@ static int omap4_keypad_open(struct input_dev *input) kbd_writel(keypad_data, OMAP4_KBD_CTRL, OMAP4_DEF_CTRL_NOSOFTMODE | - (OMAP4_VAL_PVT << OMAP4_DEF_CTRL_PTV_SHIFT)); + (OMAP4_KEYPAD_PTV_DIV_128 << OMAP4_DEF_CTRL_PTV_SHIFT)); kbd_writel(keypad_data, OMAP4_KBD_DEBOUNCINGTIME, - OMAP4_VAL_DEBOUNCINGTIME); + OMAP4_VAL_DEBOUNCINGTIME_16MS); /* clear pending interrupts */ kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS, kbd_read_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS)); @@ -204,9 +205,10 @@ static void omap4_keypad_close(struct input_dev *input) disable_irq(keypad_data->irq); - /* Disable interrupts */ + /* Disable interrupts and wake-up events */ kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQENABLE, OMAP4_VAL_IRQDISABLE); + kbd_writel(keypad_data, OMAP4_KBD_WAKEUPENABLE, 0); /* clear pending interrupts */ kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS, @@ -354,7 +356,7 @@ static int omap4_keypad_probe(struct platform_device *pdev) } error = request_threaded_irq(keypad_data->irq, omap4_keypad_irq_handler, - omap4_keypad_irq_thread_fn, 0, + omap4_keypad_irq_thread_fn, IRQF_ONESHOT, "omap4-keypad", keypad_data); if (error) { dev_err(&pdev->dev, "failed to register interrupt\n"); diff --git a/drivers/input/keyboard/st-keyscan.c b/drivers/input/keyboard/st-keyscan.c index de7be4f03d91..ebf9f643d910 100644 --- a/drivers/input/keyboard/st-keyscan.c +++ b/drivers/input/keyboard/st-keyscan.c @@ -153,6 +153,8 @@ static int keyscan_probe(struct platform_device *pdev) input_dev->id.bustype = BUS_HOST; + keypad_data->input_dev = input_dev; + error = keypad_matrix_key_parse_dt(keypad_data); if (error) return error; @@ -168,8 +170,6 @@ static int keyscan_probe(struct platform_device *pdev) input_set_drvdata(input_dev, keypad_data); - keypad_data->input_dev = input_dev; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); keypad_data->base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(keypad_data->base)) |