diff options
Diffstat (limited to 'drivers/mfd/wm8350-i2c.c')
| -rw-r--r-- | drivers/mfd/wm8350-i2c.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/mfd/wm8350-i2c.c b/drivers/mfd/wm8350-i2c.c index 8dfe21bb3bd..8d8c9321757 100644 --- a/drivers/mfd/wm8350-i2c.c +++ b/drivers/mfd/wm8350-i2c.c @@ -1,8 +1,6 @@ /* * wm8350-i2c.c -- Generic I2C driver for Wolfson WM8350 PMIC * - * This driver defines and configures the WM8350 for the Freescale i.MX32ADS. - * * Copyright 2007, 2008 Wolfson Microelectronics PLC. * * Author: Liam Girdwood @@ -30,7 +28,12 @@ static int wm8350_i2c_read_device(struct wm8350 *wm8350, char reg, ret = i2c_master_send(wm8350->i2c_client, ®, 1); if (ret < 0) return ret; - return i2c_master_recv(wm8350->i2c_client, dest, bytes); + ret = i2c_master_recv(wm8350->i2c_client, dest, bytes); + if (ret < 0) + return ret; + if (ret != bytes) + return -EIO; + return 0; } static int wm8350_i2c_write_device(struct wm8350 *wm8350, char reg, @@ -38,13 +41,19 @@ static int wm8350_i2c_write_device(struct wm8350 *wm8350, char reg, { /* we add 1 byte for device register */ u8 msg[(WM8350_MAX_REGISTER << 1) + 1]; + int ret; if (bytes > ((WM8350_MAX_REGISTER << 1) + 1)) return -EINVAL; msg[0] = reg; memcpy(&msg[1], src, bytes); - return i2c_master_send(wm8350->i2c_client, msg, bytes + 1); + ret = i2c_master_send(wm8350->i2c_client, msg, bytes + 1); + if (ret < 0) + return ret; + if (ret != bytes + 1) + return -EIO; + return 0; } static int wm8350_i2c_probe(struct i2c_client *i2c, @@ -88,6 +97,8 @@ static int wm8350_i2c_remove(struct i2c_client *i2c) static const struct i2c_device_id wm8350_i2c_id[] = { { "wm8350", 0 }, + { "wm8351", 0 }, + { "wm8352", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, wm8350_i2c_id); |