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path: root/drivers/input/keyboard/gpio_keys.c
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Diffstat (limited to 'drivers/input/keyboard/gpio_keys.c')
-rw-r--r--drivers/input/keyboard/gpio_keys.c42
1 files changed, 16 insertions, 26 deletions
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index ec96b369dd7a..05f3f43582c2 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -36,9 +36,10 @@ struct gpio_keys_drvdata {
36 struct gpio_button_data data[0]; 36 struct gpio_button_data data[0];
37}; 37};
38 38
39static void gpio_keys_report_event(struct gpio_keys_button *button, 39static void gpio_keys_report_event(struct gpio_button_data *bdata)
40 struct input_dev *input)
41{ 40{
41 struct gpio_keys_button *button = bdata->button;
42 struct input_dev *input = bdata->input;
42 unsigned int type = button->type ?: EV_KEY; 43 unsigned int type = button->type ?: EV_KEY;
43 int state = (gpio_get_value(button->gpio) ? 1 : 0) ^ button->active_low; 44 int state = (gpio_get_value(button->gpio) ? 1 : 0) ^ button->active_low;
44 45
@@ -50,34 +51,23 @@ static void gpio_check_button(unsigned long _data)
50{ 51{
51 struct gpio_button_data *data = (struct gpio_button_data *)_data; 52 struct gpio_button_data *data = (struct gpio_button_data *)_data;
52 53
53 gpio_keys_report_event(data->button, data->input); 54 gpio_keys_report_event(data);
54} 55}
55 56
56static irqreturn_t gpio_keys_isr(int irq, void *dev_id) 57static irqreturn_t gpio_keys_isr(int irq, void *dev_id)
57{ 58{
58 struct platform_device *pdev = dev_id; 59 struct gpio_button_data *bdata = dev_id;
59 struct gpio_keys_platform_data *pdata = pdev->dev.platform_data; 60 struct gpio_keys_button *button = bdata->button;
60 struct gpio_keys_drvdata *ddata = platform_get_drvdata(pdev);
61 int i;
62 61
63 for (i = 0; i < pdata->nbuttons; i++) { 62 BUG_ON(irq != gpio_to_irq(button->gpio));
64 struct gpio_keys_button *button = &pdata->buttons[i];
65 63
66 if (irq == gpio_to_irq(button->gpio)) { 64 if (button->debounce_interval)
67 struct gpio_button_data *bdata = &ddata->data[i]; 65 mod_timer(&bdata->timer,
68 66 jiffies + msecs_to_jiffies(button->debounce_interval));
69 if (button->debounce_interval) 67 else
70 mod_timer(&bdata->timer, 68 gpio_keys_report_event(bdata);
71 jiffies +
72 msecs_to_jiffies(button->debounce_interval));
73 else
74 gpio_keys_report_event(button, bdata->input);
75
76 return IRQ_HANDLED;
77 }
78 }
79 69
80 return IRQ_NONE; 70 return IRQ_HANDLED;
81} 71}
82 72
83static int __devinit gpio_keys_probe(struct platform_device *pdev) 73static int __devinit gpio_keys_probe(struct platform_device *pdev)
@@ -151,7 +141,7 @@ static int __devinit gpio_keys_probe(struct platform_device *pdev)
151 IRQF_SAMPLE_RANDOM | IRQF_TRIGGER_RISING | 141 IRQF_SAMPLE_RANDOM | IRQF_TRIGGER_RISING |
152 IRQF_TRIGGER_FALLING, 142 IRQF_TRIGGER_FALLING,
153 button->desc ? button->desc : "gpio_keys", 143 button->desc ? button->desc : "gpio_keys",
154 pdev); 144 bdata);
155 if (error) { 145 if (error) {
156 pr_err("gpio-keys: Unable to claim irq %d; error %d\n", 146 pr_err("gpio-keys: Unable to claim irq %d; error %d\n",
157 irq, error); 147 irq, error);
@@ -178,7 +168,7 @@ static int __devinit gpio_keys_probe(struct platform_device *pdev)
178 168
179 fail2: 169 fail2:
180 while (--i >= 0) { 170 while (--i >= 0) {
181 free_irq(gpio_to_irq(pdata->buttons[i].gpio), pdev); 171 free_irq(gpio_to_irq(pdata->buttons[i].gpio), &ddata->data[i]);
182 if (pdata->buttons[i].debounce_interval) 172 if (pdata->buttons[i].debounce_interval)
183 del_timer_sync(&ddata->data[i].timer); 173 del_timer_sync(&ddata->data[i].timer);
184 gpio_free(pdata->buttons[i].gpio); 174 gpio_free(pdata->buttons[i].gpio);
@@ -203,7 +193,7 @@ static int __devexit gpio_keys_remove(struct platform_device *pdev)
203 193
204 for (i = 0; i < pdata->nbuttons; i++) { 194 for (i = 0; i < pdata->nbuttons; i++) {
205 int irq = gpio_to_irq(pdata->buttons[i].gpio); 195 int irq = gpio_to_irq(pdata->buttons[i].gpio);
206 free_irq(irq, pdev); 196 free_irq(irq, &ddata->data[i]);
207 if (pdata->buttons[i].debounce_interval) 197 if (pdata->buttons[i].debounce_interval)
208 del_timer_sync(&ddata->data[i].timer); 198 del_timer_sync(&ddata->data[i].timer);
209 gpio_free(pdata->buttons[i].gpio); 199 gpio_free(pdata->buttons[i].gpio);