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;
status = adp5588_read(client, INT_STAT);
if (status & OVR_FLOW_INT) /* Unlikely and should never happen */
dev_err(&client->dev, "Event Overflow Error\n");
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);
}
input_sync(kpad->input);
}
}
adp5588_write(client, INT_STAT, status); /* Status is W1C */
}
static int adp5588_gpio_add(struct adp5588_kpad *kpad)
{
struct device *dev = &kpad->client->dev;
const struct adp5588_kpad_platform_data *pdata = dev_get_platdata(dev);
const struct adp5588_gpio_platform_data *gpio_data = pdata->gpio_data;
int i, error;
if (!gpio_data)
return 0;
kpad->gc.ngpio = adp5588_build_gpiomap(kpad, pdata);
if (kpad->gc.ngpio == 0) {
dev_info(dev, "No unused gpios left to export\n");
return 0;
}
kpad->export_gpio = true;
kpad->gc.direction_input = adp5588_gpio_direction_input;
kpad->gc.direction_output = adp5588_gpio_direction_output;
kpad->gc.get = adp5588_gpio_get_value;
kpad->gc.set = adp5588_gpio_set_value;
kpad->gc.can_sleep = 1;
kpad->gc.base = gpio_data->gpio_start;
kpad->gc.label = kpad->client->name;
kpad->gc.owner = THIS_MODULE;
kpad->gc.names = gpio_data->names;
mutex_init(&kpad->gpio_lock);
error = gpiochip_add_data(&kpad->gc, kpad);
if (error) {
dev_err(dev, "gpiochip_add failed, err: %d\n", error);
return error;
}
for (i = 0; i <= ADP5588_BANK(ADP5588_MAXGPIO); i++) {
kpad->dat_out[i] = adp5588_read(kpad->client,
GPIO_DAT_OUT1 + i);
kpad->dir[i] = adp5588_read(kpad->client, GPIO_DIR1 + i);
}
if (gpio_data->setup) {
error = gpio_data->setup(kpad->client,
kpad->gc.base, kpad->gc.ngpio,
gpio_data->context);
if (error)
dev_warn(dev, "setup failed, %d\n", error);
}
return 0;
}
static int adp5588_setup(struct i2c_client *client)
{
struct adp5588_kpad_platform_data *pdata = client->dev.platform_data;
int i, ret;
ret = adp5588_write(client, KP_GPIO1, KP_SEL(pdata->rows));
ret |= adp5588_write(client, KP_GPIO2, KP_SEL(pdata->cols) & 0xFF);
ret |= adp5588_write(client, KP_GPIO3, KP_SEL(pdata->cols) >> 8);
if (pdata->en_keylock) {
ret |= adp5588_write(client, UNLOCK1, pdata->unlock_key1);
ret |= adp5588_write(client, UNLOCK2, pdata->unlock_key2);
ret |= adp5588_write(client, KEY_LCK_EC_STAT, K_LCK_EN);
}
for (i = 0; i < KEYP_MAX_EVENT; i++)
ret |= adp5588_read(client, Key_EVENTA);
ret |= adp5588_write(client, INT_STAT, CMP2_INT | CMP1_INT |
OVR_FLOW_INT | K_LCK_INT |
GPI_INT | KE_INT); /* Status is W1C */
ret |= adp5588_write(client, CFG, INT_CFG | OVR_FLOW_IEN | KE_IEN);
if (ret < 0) {
dev_err(&client->dev, "Write Error\n");
return ret;
}
return 0;
}
static int adp5588_gpio_get_value(struct gpio_chip *chip, unsigned off)
{
struct adp5588_kpad *kpad = container_of(chip, struct adp5588_kpad, gc);
unsigned int bank = ADP5588_BANK(kpad->gpiomap[off]);
unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]);
return !!(adp5588_read(kpad->client, GPIO_DAT_STAT1 + bank) & bit);
}
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 status, ev_cnt;
status = adp5588_read(client, INT_STAT);
if (status & ADP5588_OVR_FLOW_INT) /* Unlikely and should never happen */
dev_err(&client->dev, "Event Overflow Error\n");
if (status & ADP5588_KE_INT) {
ev_cnt = adp5588_read(client, KEY_LCK_EC_STAT) & ADP5588_KEC;
if (ev_cnt) {
adp5588_report_events(kpad, ev_cnt);
input_sync(kpad->input);
}
}
adp5588_write(client, INT_STAT, status); /* Status is W1C */
}
static void 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 adp5588_gpio_get_value(struct gpio_chip *chip, unsigned off)
{
struct adp5588_kpad *kpad = gpiochip_get_data(chip);
unsigned int bank = ADP5588_BANK(kpad->gpiomap[off]);
unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]);
int val;
mutex_lock(&kpad->gpio_lock);
if (kpad->dir[bank] & bit)
val = kpad->dat_out[bank];
else
val = adp5588_read(kpad->client, GPIO_DAT_STAT1 + bank);
mutex_unlock(&kpad->gpio_lock);
return !!(val & bit);
}
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 int adp5588_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct adp5588_kpad *kpad;
const struct adp5588_kpad_platform_data *pdata =
dev_get_platdata(&client->dev);
struct input_dev *input;
unsigned int revid;
int ret, i;
int error;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_BYTE_DATA)) {
dev_err(&client->dev, "SMBUS Byte Data not Supported\n");
return -EIO;
}
if (!pdata) {
dev_err(&client->dev, "no platform data?\n");
return -EINVAL;
}
if (!pdata->rows || !pdata->cols || !pdata->keymap) {
dev_err(&client->dev, "no rows, cols or keymap from pdata\n");
return -EINVAL;
}
if (pdata->keymapsize != ADP5588_KEYMAPSIZE) {
dev_err(&client->dev, "invalid keymapsize\n");
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;
}
kpad = kzalloc(sizeof(*kpad), GFP_KERNEL);
input = input_allocate_device();
if (!kpad || !input) {
error = -ENOMEM;
goto err_free_mem;
}
kpad->client = client;
kpad->input = input;
INIT_DELAYED_WORK(&kpad->work, adp5588_work);
ret = adp5588_read(client, DEV_ID);
if (ret < 0) {
error = ret;
goto err_free_mem;
}
revid = (u8) ret & ADP5588_DEVICE_ID_MASK;
if (WA_DELAYED_READOUT_REVID(revid))
kpad->delay = msecs_to_jiffies(30);
input->name = client->name;
input->phys = "adp5588-keys/input0";
input->dev.parent = &client->dev;
input_set_drvdata(input, kpad);
input->id.bustype = BUS_I2C;
input->id.vendor = 0x0001;
input->id.product = 0x0001;
input->id.version = revid;
input->keycodesize = sizeof(kpad->keycode[0]);
input->keycodemax = pdata->keymapsize;
input->keycode = kpad->keycode;
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);
if (pdata->repeat)
__set_bit(EV_REP, input->evbit);
for (i = 0; i < input->keycodemax; i++)
if (kpad->keycode[i] <= KEY_MAX)
__set_bit(kpad->keycode[i], 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");
goto err_free_mem;
}
error = request_irq(client->irq, adp5588_irq,
IRQF_TRIGGER_FALLING,
client->dev.driver->name, kpad);
if (error) {
dev_err(&client->dev, "irq %d busy?\n", client->irq);
goto err_unreg_dev;
}
error = adp5588_setup(client);
if (error)
goto err_free_irq;
if (kpad->gpimapsize)
adp5588_report_switch_state(kpad);
error = adp5588_gpio_add(kpad);
if (error)
goto err_free_irq;
device_init_wakeup(&client->dev, 1);
i2c_set_clientdata(client, kpad);
dev_info(&client->dev, "Rev.%d keypad, irq %d\n", revid, client->irq);
return 0;
err_free_irq:
free_irq(client->irq, kpad);
cancel_delayed_work_sync(&kpad->work);
err_unreg_dev:
input_unregister_device(input);
input = NULL;
err_free_mem:
input_free_device(input);
kfree(kpad);
return error;
}
static int adp5588_setup(struct i2c_client *client)
{
const struct adp5588_kpad_platform_data *pdata =
dev_get_platdata(&client->dev);
const struct adp5588_gpio_platform_data *gpio_data = pdata->gpio_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);
ret |= adp5588_write(client, KP_GPIO3, KP_SEL(pdata->cols) >> 8);
if (pdata->en_keylock) {
ret |= adp5588_write(client, UNLOCK1, pdata->unlock_key1);
ret |= adp5588_write(client, UNLOCK2, pdata->unlock_key2);
ret |= adp5588_write(client, KEY_LCK_EC_STAT, ADP5588_K_LCK_EN);
}
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);
}
if (gpio_data) {
for (i = 0; i <= ADP5588_BANK(ADP5588_MAXGPIO); i++) {
int pull_mask = gpio_data->pullup_dis_mask;
ret |= adp5588_write(client, GPIO_PULL1 + i,
(pull_mask >> (8 * i)) & 0xFF);
}
}
ret |= adp5588_write(client, INT_STAT,
ADP5588_CMP2_INT | ADP5588_CMP1_INT |
ADP5588_OVR_FLOW_INT | ADP5588_K_LCK_INT |
ADP5588_GPI_INT | ADP5588_KE_INT); /* Status is W1C */
ret |= adp5588_write(client, CFG, ADP5588_INT_CFG |
ADP5588_OVR_FLOW_IEN |
ADP5588_KE_IEN);
if (ret < 0) {
dev_err(&client->dev, "Write Error\n");
return ret;
}
return 0;
}
static int __devinit adp5588_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct adp5588_kpad *kpad;
struct adp5588_kpad_platform_data *pdata = client->dev.platform_data;
struct input_dev *input;
int ret, i;
u8 revid;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_BYTE_DATA)) {
dev_err(&client->dev, "SMBUS Byte Data not Supported\n");
return -EIO;
}
if (!pdata) {
dev_err(&client->dev, "no platform data?\n");
return -ENODEV;
}
if (!pdata->rows || !pdata->cols || !pdata->keymap) {
dev_err(&client->dev,
": No rows, cols or keymap from pdata\n");
return -EINVAL;
}
if (pdata->keymapsize != ADP5588_KEYMAPSIZE) {
dev_err(&client->dev, ": Invalid keymapsize\n");
return -EINVAL;
}
if (!client->irq) {
dev_err(&client->dev, "no IRQ?\n");
return -ENODEV;
}
kpad = kzalloc(sizeof(struct adp5588_kpad), GFP_KERNEL);
if (!kpad)
return -ENOMEM;
input = input_allocate_device();
if (!input) {
kfree(kpad);
return -ENOMEM;
}
i2c_set_clientdata(client, kpad);
kpad->client = client;
ret = adp5588_read(client, DEV_ID);
if (ret < 0) {
input_free_device(input);
goto out1;
}
revid = (u8) ret;
INIT_DELAYED_WORK(&kpad->work, adp5588_work);
kpad->input = input;
input->name = client->name;
input->phys = "adp5588-keys/inputX";
input->dev.parent = &client->dev;
input_set_drvdata(input, kpad);
input->id.bustype = BUS_I2C;
input->id.vendor = 0x0001;
input->id.product = 0x0001;
input->id.version = revid;
input->keycodesize = sizeof(unsigned short);
input->keycodemax = pdata->keymapsize;
input->keycode = kpad->keycode;
memcpy(kpad->keycode, pdata->keymap,
pdata->keymapsize * input->keycodesize);
/* setup input device */
__set_bit(EV_KEY, input->evbit);
if (pdata->repeat)
__set_bit(EV_REP, input->evbit);
for (i = 0; i < input->keycodemax; i++)
__set_bit(kpad->keycode[i] & KEY_MAX, input->keybit);
__clear_bit(KEY_RESERVED, input->keybit);
ret = input_register_device(input);
if (ret) {
dev_err(&client->dev,
": Unable to register input device (%d)\n", ret);
input_free_device(input);
goto out1;
}
ret = request_irq(client->irq, adp5588_irq, IRQF_TRIGGER_FALLING |
IRQF_DISABLED,
client->dev.driver->name, kpad);
if (ret) {
dev_err(&client->dev, "irq %d busy?\n", client->irq);
goto out2;
}
ret = adp5588_setup(client);
if (ret)
goto out3;
dev_info(&client->dev, "Rev.%d keypad, irq %d\n",
revid, client->irq);
return ret;
out3:
free_irq(client->irq, kpad);
out2:
input_unregister_device(input);
out1:
i2c_set_clientdata(client, NULL);
kfree(kpad);
return ret;
}