Input: adp5588-keys - support GPI events for ADP5588 devices
A column or row configured as a GPI can be programmed to be part
of the key event table and therefore also capable of generating a
key event interrupt. A key event interrupt caused by a GPI follows
the same process flow as a key event interrupt caused by a key
press. GPIs configured as part of the key event table allow single
key switches and other GPI interrupts to be monitored. As part of
the event table, GPIs are represented by the decimal value 97 (0x61
or 1100001) through the decimal value 114 (0x72 or 1110010). See
table below for GPI event number assignments for rows and columns.
GPI Event Number Assignments for Rows
Row0 Row1 Row2 Row3 Row4 Row5 Row6 Row7
97 98 99 100 101 102 103 104
GPI Event Number Assignments for Cols
Col0 Col1 Col2 Col3 Col4 Col5 Col6 Col7 Col8 Col9
105 106 107 108 109 110 111 112 113 114
Signed-off-by: Xiaolong Chen <xiao-long.chen@motorola.com>
Signed-off-by: Yuanbo Ye <yuan-bo.ye@motorola.com>
Signed-off-by: Tao Hu <taohu@motorola.com>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/keyboard/adp5588-keys.c b/drivers/input/keyboard/adp5588-keys.c
index 4771ab1..4ef789e 100644
--- a/drivers/input/keyboard/adp5588-keys.c
+++ b/drivers/input/keyboard/adp5588-keys.c
@@ -67,6 +67,8 @@
struct delayed_work work;
unsigned long delay;
unsigned short keycode[ADP5588_KEYMAPSIZE];
+ const struct adp5588_gpi_map *gpimap;
+ unsigned short gpimapsize;
};
static int adp5588_read(struct i2c_client *client, u8 reg)
@@ -84,12 +86,37 @@
return i2c_smbus_write_byte_data(client, reg, val);
}
+static void adp5588_report_events(struct adp5588_kpad *kpad, int ev_cnt)
+{
+ int i, j;
+
+ for (i = 0; i < ev_cnt; i++) {
+ int key = adp5588_read(kpad->client, Key_EVENTA + i);
+ int key_val = key & KEY_EV_MASK;
+
+ if (key_val >= GPI_PIN_BASE && key_val <= GPI_PIN_END) {
+ for (j = 0; j < kpad->gpimapsize; j++) {
+ if (key_val == kpad->gpimap[j].pin) {
+ input_report_switch(kpad->input,
+ kpad->gpimap[j].sw_evt,
+ key & KEY_EV_PRESSED);
+ break;
+ }
+ }
+ } else {
+ input_report_key(kpad->input,
+ kpad->keycode[key_val - 1],
+ key & KEY_EV_PRESSED);
+ }
+ }
+}
+
static void adp5588_work(struct work_struct *work)
{
struct adp5588_kpad *kpad = container_of(work,
struct adp5588_kpad, work.work);
struct i2c_client *client = kpad->client;
- int i, key, status, ev_cnt;
+ int status, ev_cnt;
status = adp5588_read(client, INT_STAT);
@@ -99,12 +126,7 @@
if (status & KE_INT) {
ev_cnt = adp5588_read(client, KEY_LCK_EC_STAT) & KEC;
if (ev_cnt) {
- for (i = 0; i < ev_cnt; i++) {
- key = adp5588_read(client, Key_EVENTA + i);
- input_report_key(kpad->input,
- kpad->keycode[(key & KEY_EV_MASK) - 1],
- key & KEY_EV_PRESSED);
- }
+ adp5588_report_events(kpad, ev_cnt);
input_sync(kpad->input);
}
}
@@ -130,6 +152,7 @@
{
struct adp5588_kpad_platform_data *pdata = client->dev.platform_data;
int i, ret;
+ unsigned char evt_mode1 = 0, evt_mode2 = 0, evt_mode3 = 0;
ret = adp5588_write(client, KP_GPIO1, KP_SEL(pdata->rows));
ret |= adp5588_write(client, KP_GPIO2, KP_SEL(pdata->cols) & 0xFF);
@@ -144,6 +167,23 @@
for (i = 0; i < KEYP_MAX_EVENT; i++)
ret |= adp5588_read(client, Key_EVENTA);
+ for (i = 0; i < pdata->gpimapsize; i++) {
+ unsigned short pin = pdata->gpimap[i].pin;
+
+ if (pin <= GPI_PIN_ROW_END) {
+ evt_mode1 |= (1 << (pin - GPI_PIN_ROW_BASE));
+ } else {
+ evt_mode2 |= ((1 << (pin - GPI_PIN_COL_BASE)) & 0xFF);
+ evt_mode3 |= ((1 << (pin - GPI_PIN_COL_BASE)) >> 8);
+ }
+ }
+
+ if (pdata->gpimapsize) {
+ ret |= adp5588_write(client, GPI_EM1, evt_mode1);
+ ret |= adp5588_write(client, GPI_EM2, evt_mode2);
+ ret |= adp5588_write(client, GPI_EM3, evt_mode3);
+ }
+
ret |= adp5588_write(client, INT_STAT, CMP2_INT | CMP1_INT |
OVR_FLOW_INT | K_LCK_INT |
GPI_INT | KE_INT); /* Status is W1C */
@@ -158,6 +198,44 @@
return 0;
}
+static void __devinit adp5588_report_switch_state(struct adp5588_kpad *kpad)
+{
+ int gpi_stat1 = adp5588_read(kpad->client, GPIO_DAT_STAT1);
+ int gpi_stat2 = adp5588_read(kpad->client, GPIO_DAT_STAT2);
+ int gpi_stat3 = adp5588_read(kpad->client, GPIO_DAT_STAT3);
+ int gpi_stat_tmp, pin_loc;
+ int i;
+
+ for (i = 0; i < kpad->gpimapsize; i++) {
+ unsigned short pin = kpad->gpimap[i].pin;
+
+ if (pin <= GPI_PIN_ROW_END) {
+ gpi_stat_tmp = gpi_stat1;
+ pin_loc = pin - GPI_PIN_ROW_BASE;
+ } else if ((pin - GPI_PIN_COL_BASE) < 8) {
+ gpi_stat_tmp = gpi_stat2;
+ pin_loc = pin - GPI_PIN_COL_BASE;
+ } else {
+ gpi_stat_tmp = gpi_stat3;
+ pin_loc = pin - GPI_PIN_COL_BASE - 8;
+ }
+
+ if (gpi_stat_tmp < 0) {
+ dev_err(&kpad->client->dev,
+ "Can't read GPIO_DAT_STAT switch %d default to OFF\n",
+ pin);
+ gpi_stat_tmp = 0;
+ }
+
+ input_report_switch(kpad->input,
+ kpad->gpimap[i].sw_evt,
+ !(gpi_stat_tmp & (1 << pin_loc)));
+ }
+
+ input_sync(kpad->input);
+}
+
+
static int __devinit adp5588_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -189,6 +267,37 @@
return -EINVAL;
}
+ if (!pdata->gpimap && pdata->gpimapsize) {
+ dev_err(&client->dev, "invalid gpimap from pdata\n");
+ return -EINVAL;
+ }
+
+ if (pdata->gpimapsize > ADP5588_GPIMAPSIZE_MAX) {
+ dev_err(&client->dev, "invalid gpimapsize\n");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < pdata->gpimapsize; i++) {
+ unsigned short pin = pdata->gpimap[i].pin;
+
+ if (pin < GPI_PIN_BASE || pin > GPI_PIN_END) {
+ dev_err(&client->dev, "invalid gpi pin data\n");
+ return -EINVAL;
+ }
+
+ if (pin <= GPI_PIN_ROW_END) {
+ if (pin - GPI_PIN_ROW_BASE + 1 <= pdata->rows) {
+ dev_err(&client->dev, "invalid gpi row data\n");
+ return -EINVAL;
+ }
+ } else {
+ if (pin - GPI_PIN_COL_BASE + 1 <= pdata->cols) {
+ dev_err(&client->dev, "invalid gpi col data\n");
+ return -EINVAL;
+ }
+ }
+ }
+
if (!client->irq) {
dev_err(&client->dev, "no IRQ?\n");
return -EINVAL;
@@ -233,6 +342,9 @@
memcpy(kpad->keycode, pdata->keymap,
pdata->keymapsize * input->keycodesize);
+ kpad->gpimap = pdata->gpimap;
+ kpad->gpimapsize = pdata->gpimapsize;
+
/* setup input device */
__set_bit(EV_KEY, input->evbit);
@@ -243,6 +355,11 @@
__set_bit(kpad->keycode[i] & KEY_MAX, input->keybit);
__clear_bit(KEY_RESERVED, input->keybit);
+ if (kpad->gpimapsize)
+ __set_bit(EV_SW, input->evbit);
+ for (i = 0; i < kpad->gpimapsize; i++)
+ __set_bit(kpad->gpimap[i].sw_evt, input->swbit);
+
error = input_register_device(input);
if (error) {
dev_err(&client->dev, "unable to register input device\n");
@@ -261,6 +378,9 @@
if (error)
goto err_free_irq;
+ if (kpad->gpimapsize)
+ adp5588_report_switch_state(kpad);
+
device_init_wakeup(&client->dev, 1);
i2c_set_clientdata(client, kpad);