diff options
| author | Luwei Zhou <b45643@freescale.com> | 2014-03-31 14:31:23 +0800 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@freescale.com> | 2014-04-16 08:58:12 -0500 |
| commit | c9b8d2d177ba94c0df02a2fda68c647f193589a1 (patch) | |
| tree | d80968ff64520be03e93fdcd54325cb203632313 /drivers | |
| parent | bd6cea40137510e96564863d6065a01c9f430240 (diff) | |
ENGR00306133-1: input: misc: isl29023: Enable isl29023 driver for i.MX6SX-SDB platform
The isl29023 share the same interrupt gpio with mag3110 sensor. This patch add shared
interrutp support.
Signed-off-by: Luwei Zhou <b45643@freescale.com>
Diffstat (limited to 'drivers')
| -rwxr-xr-x | drivers/input/misc/isl29023.c | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/drivers/input/misc/isl29023.c b/drivers/input/misc/isl29023.c index 9bcea5e3dd3f..3b3c7a0d931d 100755 --- a/drivers/input/misc/isl29023.c +++ b/drivers/input/misc/isl29023.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright (C) 2011-2014 Freescale Semiconductor, Inc. All Rights Reserved. */ /* @@ -582,6 +582,8 @@ static ssize_t isl29023_store_mode(struct device *dev, (val > ISL29023_IR_CONT_MODE)) return -EINVAL; + /* clear the interrupt flag */ + i2c_smbus_read_byte_data(client, ISL29023_COMMAND1); ret = isl29023_set_mode(client, val); if (ret < 0) return ret; @@ -844,6 +846,11 @@ static void isl29023_work(struct work_struct *work) static irqreturn_t isl29023_irq_handler(int irq, void *handle) { struct isl29023_data *data = handle; + int cmd_1; + cmd_1 = i2c_smbus_read_byte_data(data->client, ISL29023_COMMAND1); + if (!(cmd_1 & ISL29023_INT_FLAG_MASK)) + return IRQ_NONE; + queue_work(data->workqueue, &data->work); return IRQ_HANDLED; } @@ -862,6 +869,9 @@ static int isl29023_probe(struct i2c_client *client, struct regulator *vdd = NULL; u32 rext = 0; struct device_node *of_node = client->dev.of_node; + struct irq_data *irq_data = irq_get_irq_data(client->irq); + u32 irq_flag; + bool shared_irq; vdd = devm_regulator_get(&client->dev, "vdd"); if (!IS_ERR(vdd)) { @@ -875,6 +885,7 @@ static int isl29023_probe(struct i2c_client *client, err = of_property_read_u32(of_node, "rext", &rext); if (err) rext = DEFAULT_REGISTOR_VAL; + shared_irq = of_property_read_bool(of_node, "shared-interrupt"); if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE)) return -EIO; @@ -919,10 +930,13 @@ static int isl29023_probe(struct i2c_client *client, if (err) goto exit_free_input; - /* set irq type to edge falling */ - irq_set_irq_type(client->irq, IRQF_TRIGGER_FALLING); - err = request_irq(client->irq, isl29023_irq_handler, 0, - client->dev.driver->name, data); + irq_flag = irqd_get_trigger_type(irq_data); + irq_flag |= IRQF_ONESHOT; + if (shared_irq) + irq_flag |= IRQF_SHARED; + err = request_threaded_irq(client->irq, NULL, + isl29023_irq_handler, irq_flag, + client->dev.driver->name, data); if (err < 0) { dev_err(&client->dev, "failed to register irq %d!\n", client->irq); |