Input: cobalt_btns - add support for loadable keymaps

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 36 insertions, 37 deletions

diff --git a/drivers/input/misc/cobalt_btns.c b/drivers/input/misc/cobalt_btns.c
index 1aef97ed5e84..4833b1a82623 100644
--- a/drivers/input/misc/cobalt_btns.c
+++ b/drivers/input/misc/cobalt_btns.c
@@ -27,55 +27,48 @@
 #define BUTTONS_COUNT_THRESHOLD 3
 #define BUTTONS_STATUS_MASK     0xfe000000
 
+static const unsigned short cobalt_map[] = {
+        KEY_RESERVED,
+        KEY_RESTART,
+        KEY_LEFT,
+        KEY_UP,
+        KEY_DOWN,
+        KEY_RIGHT,
+        KEY_ENTER,
+        KEY_SELECT
+};
+
 struct buttons_dev {
         struct input_polled_dev *poll_dev;
+        unsigned short keymap[ARRAY_SIZE(cobalt_map)];
+        int count[ARRAY_SIZE(cobalt_map)];
         void __iomem *reg;
 };
 
-struct buttons_map {
-        uint32_t mask;
-        int keycode;
-        int count;
-};
-
-static struct buttons_map buttons_map[] = {
-        { 0x02000000, KEY_RESTART, },
-        { 0x04000000, KEY_LEFT, },
-        { 0x08000000, KEY_UP, },
-        { 0x10000000, KEY_DOWN, },
-        { 0x20000000, KEY_RIGHT, },
-        { 0x40000000, KEY_ENTER, },
-        { 0x80000000, KEY_SELECT, },
-};
-
 static void handle_buttons(struct input_polled_dev *dev)
 {
-        struct buttons_map *button = buttons_map;
         struct buttons_dev *bdev = dev->private;
         struct input_dev *input = dev->input;
         uint32_t status;
         int i;
 
-        status = readl(bdev->reg);
-        status = ~status & BUTTONS_STATUS_MASK;
+        status = ~readl(bdev->reg) >> 24;
 
-        for (i = 0; i < ARRAY_SIZE(buttons_map); i++) {
-                if (status & button->mask) {
-                        button->count++;
+        for (i = 0; i < ARRAY_SIZE(bdev->keymap); i++) {
+                if (status & (1UL << i)) {
+                        if (++bdev->count[i] == BUTTONS_COUNT_THRESHOLD) {
+                                input_event(input, EV_MSC, MSC_SCAN, i);
+                                input_report_key(input, bdev->keymap[i], 1);
+                                input_sync(input);
+                        }
                 } else {
-                        if (button->count >= BUTTONS_COUNT_THRESHOLD) {
-                                input_report_key(input, button->keycode, 0);
+                        if (bdev->count[i] >= BUTTONS_COUNT_THRESHOLD) {
+                                input_event(input, EV_MSC, MSC_SCAN, i);
+                                input_report_key(input, bdev->keymap[i], 0);
                                 input_sync(input);
                         }
-                        button->count = 0;
-                }
-
-                if (button->count == BUTTONS_COUNT_THRESHOLD) {
-                        input_report_key(input, button->keycode, 1);
-                        input_sync(input);
+                        bdev->count[i] = 0;
                 }
-
-                button++;
         }
 }
 
@@ -94,6 +87,8 @@ static int __devinit cobalt_buttons_probe(struct platform_device *pdev)
                 goto err_free_mem;
         }
 
+        memcpy(bdev->keymap, cobalt_map, sizeof(bdev->keymap));
+
         poll_dev->private = bdev;
         poll_dev->poll = handle_buttons;
         poll_dev->poll_interval = BUTTONS_POLL_INTERVAL;
@@ -104,11 +99,15 @@ static int __devinit cobalt_buttons_probe(struct platform_device *pdev)
         input->id.bustype = BUS_HOST;
         input->cdev.dev = &pdev->dev;
 
-        input->evbit[0] = BIT_MASK(EV_KEY);
-        for (i = 0; i < ARRAY_SIZE(buttons_map); i++) {
-                set_bit(buttons_map[i].keycode, input->keybit);
-                buttons_map[i].count = 0;
-        }
+        input->keycode = pdev->keymap;
+        input->keycodemax = ARRAY_SIZE(pdev->keymap);
+        input->keycodesize = sizeof(unsigned short);
+
+        input_set_capability(input, EV_MSC, MSC_SCAN);
+        __set_bit(EV_KEY, input->evbit);
+        for (i = 0; i < ARRAY_SIZE(buttons_map); i++)
+                __set_bit(input->keycode[i], input->keybit);
+        __clear_bit(KEY_RESERVED, input->keybit);
 
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         if (!res) {