| Jean Delvare | b5527a7 | 2010-03-02 12:23:42 +0100 | [diff] [blame] | 1 | /* |
| 2 | * i2c-smbus.h - SMBus extensions to the I2C protocol |
| 3 | * |
| 4 | * Copyright (C) 2010 Jean Delvare <khali@linux-fr.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| Jean Delvare | 5694f8a | 2012-03-26 21:47:19 +0200 | [diff] [blame] | 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
| 19 | * MA 02110-1301 USA. |
| Jean Delvare | b5527a7 | 2010-03-02 12:23:42 +0100 | [diff] [blame] | 20 | */ |
| 21 | |
| 22 | #ifndef _LINUX_I2C_SMBUS_H |
| 23 | #define _LINUX_I2C_SMBUS_H |
| 24 | |
| 25 | #include <linux/i2c.h> |
| 26 | |
| 27 | |
| 28 | /** |
| 29 | * i2c_smbus_alert_setup - platform data for the smbus_alert i2c client |
| 30 | * @alert_edge_triggered: whether the alert interrupt is edge (1) or level (0) |
| 31 | * triggered |
| 32 | * @irq: IRQ number, if the smbus_alert driver should take care of interrupt |
| 33 | * handling |
| 34 | * |
| 35 | * If irq is not specified, the smbus_alert driver doesn't take care of |
| 36 | * interrupt handling. In that case it is up to the I2C bus driver to either |
| 37 | * handle the interrupts or to poll for alerts. |
| 38 | * |
| 39 | * If irq is specified then it it crucial that alert_edge_triggered is |
| 40 | * properly set. |
| 41 | */ |
| 42 | struct i2c_smbus_alert_setup { |
| 43 | unsigned int alert_edge_triggered:1; |
| 44 | int irq; |
| 45 | }; |
| 46 | |
| 47 | struct i2c_client *i2c_setup_smbus_alert(struct i2c_adapter *adapter, |
| 48 | struct i2c_smbus_alert_setup *setup); |
| 49 | int i2c_handle_smbus_alert(struct i2c_client *ara); |
| 50 | |
| 51 | #endif /* _LINUX_I2C_SMBUS_H */ |