diff options
Diffstat (limited to 'arch/arm/include/asm/imx-common/mxc_i2c.h')
| -rw-r--r-- | arch/arm/include/asm/imx-common/mxc_i2c.h | 38 |
1 files changed, 33 insertions, 5 deletions
diff --git a/arch/arm/include/asm/imx-common/mxc_i2c.h b/arch/arm/include/asm/imx-common/mxc_i2c.h index af86163535..355b25e885 100644 --- a/arch/arm/include/asm/imx-common/mxc_i2c.h +++ b/arch/arm/include/asm/imx-common/mxc_i2c.h @@ -19,6 +19,36 @@ struct i2c_pads_info { struct i2c_pin_ctrl sda; }; +/* + * Information about i2c controller + * struct mxc_i2c_bus - information about the i2c[x] bus + * @index: i2c bus index + * @base: Address of I2C bus controller + * @driver_data: Flags for different platforms, such as I2C_QUIRK_FLAG. + * @speed: Speed of I2C bus + * @pads_info: pinctrl info for this i2c bus, will be used when pinctrl is ok. + * The following two is only to be compatible with non-DM part. + * @idle_bus_fn: function to force bus idle + * @idle_bus_data: parameter for idle_bus_fun + */ +struct mxc_i2c_bus { + /* + * board file can use this index to locate which i2c_pads_info is for + * i2c_idle_bus. When pinmux is implement, this entry can be + * discarded. Here we do not use dev->seq, because we do not want to + * export device to board file. + */ + int index; + ulong base; + ulong driver_data; + int speed; + struct i2c_pads_info *pads_info; +#ifndef CONFIG_DM_I2C + int (*idle_bus_fn)(void *p); + void *idle_bus_data; +#endif +}; + #if defined(CONFIG_MX6QDL) #define I2C_PADS(name, scl_i2c, scl_gpio, scl_gp, sda_i2c, sda_gpio, sda_gp) \ struct i2c_pads_info mx6q_##name = { \ @@ -54,10 +84,8 @@ struct i2c_pads_info { int setup_i2c(unsigned i2c_index, int speed, int slave_addr, struct i2c_pads_info *p); -void bus_i2c_init(void *base, int speed, int slave_addr, +void bus_i2c_init(int index, int speed, int slave_addr, int (*idle_bus_fn)(void *p), void *p); -int bus_i2c_read(void *base, uchar chip, uint addr, int alen, uchar *buf, - int len); -int bus_i2c_write(void *base, uchar chip, uint addr, int alen, - const uchar *buf, int len); +int force_idle_bus(void *priv); +int i2c_idle_bus(struct mxc_i2c_bus *i2c_bus); #endif |