Revert "stm32: Change USART port to USART6 for stm32f746 discovery board"

[oweals/u-boot.git] / arch / arm / include / asm / imx-common / mxc_i2c.h

diff --git a/arch/arm/include/asm/imx-common/mxc_i2c.h b/arch/arm/include/asm/imx-common/mxc_i2c.h
index 182c2f397f1748d0f574a4ffaa9a31335475fba5..b0b6d613301ca3a062b02183b62c98f8c9626c37 100644 (file)
--- a/arch/arm/include/asm/imx-common/mxc_i2c.h
+++ b/arch/arm/include/asm/imx-common/mxc_i2c.h
@@ -5,6 +5,7 @@
  */
 #ifndef __ASM_ARCH_MXC_MXC_I2C_H__
 #define __ASM_ARCH_MXC_MXC_I2C_H__
+#include <asm-generic/gpio.h>
 #include <asm/imx-common/iomux-v3.h>
 
 struct i2c_pin_ctrl {
@@ -19,6 +20,45 @@ 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
+ * For DM:
+ * bus: The device structure for i2c bus controller
+ * scl-gpio: specify the gpio related to SCL pin
+ * sda-gpio: specify the gpio related to SDA pin
+ */
+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;
+#else
+       struct udevice *bus;
+       /* Use gpio to force bus idle when bus state is abnormal */
+       struct gpio_desc scl_gpio;
+       struct gpio_desc sda_gpio;
+#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 = {            \
@@ -52,12 +92,10 @@ struct i2c_pads_info {
                                        &mx6q_##name : &mx6s_##name
 #endif
 
-void 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,
+int setup_i2c(unsigned i2c_index, int speed, int slave_addr,
+             struct i2c_pads_info *p);
+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