diff options
Diffstat (limited to 'drivers/mfd/da9052-i2c.c')
| -rw-r--r-- | drivers/mfd/da9052-i2c.c | 30 |
1 files changed, 14 insertions, 16 deletions
diff --git a/drivers/mfd/da9052-i2c.c b/drivers/mfd/da9052-i2c.c index 4f050896d962..6209e977f10c 100644 --- a/drivers/mfd/da9052-i2c.c +++ b/drivers/mfd/da9052-i2c.c @@ -21,23 +21,21 @@ static struct da9052 *da9052_i2c; static int da9052_i2c_is_connected(void) { + struct da9052_ssc_msg msg; + int retries = 10, ret = -1; + + msg.addr = DA9052_INTERFACE_REG; + do { + /* Test i2c connectivity by reading the GPIO_0-1 register */ + if (0 != da9052_i2c_read(da9052_i2c, &msg)) { + printk(KERN_INFO"da9052_i2c_is_connected - i2c read failed.....\n"); + } else { + printk(KERN_INFO"da9052_i2c_is_connected - i2c read success....\n"); + ret = 0; + } + } while (ret != 0 && retries--); - struct da9052_ssc_msg msg; - - //printk("Entered da9052_i2c_is_connected.............\n"); - - msg.addr = DA9052_INTERFACE_REG; - - /* Test spi connectivity by performing read of the GPIO_0-1 register */ - if ( 0 != da9052_i2c_read(da9052_i2c, &msg)) { - printk("da9052_i2c_is_connected - i2c read failed.............\n"); - return -1; - } - else { - printk("da9052_i2c_is_connected - i2c read success..............\n"); - return 0; - } - + return ret; } static int __devinit da9052_i2c_probe(struct i2c_client *client, |