+/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2009 Sergey Kubushyn <ksi@koi8.net>
* Copyright (C) 2009 - 2013 Heiko Schocher <hs@denx.de>
* (C) Copyright 2001
* Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com.
*
- * SPDX-License-Identifier: GPL-2.0+
- *
* The original I2C interface was
* (C) 2000 by Paolo Scaffardi (arsenio@tin.it)
* AIRVENT SAM s.p.a - RIMINI(ITALY)
* I2C bus udevice.
*
* @speed_hz: Bus speed in hertz (typically 100000)
+ * @max_transaction_bytes: Maximal size of single I2C transfer
*/
struct dm_i2c_bus {
int speed_hz;
+ int max_transaction_bytes;
};
/*
*/
int i2c_deblock(struct udevice *bus);
-#ifdef CONFIG_DM_I2C_COMPAT
-/**
- * i2c_probe() - Compatibility function for driver model
- *
- * Calls dm_i2c_probe() on the current bus
- */
-int i2c_probe(uint8_t chip_addr);
-
-/**
- * i2c_read() - Compatibility function for driver model
- *
- * Calls dm_i2c_read() with the device corresponding to @chip_addr, and offset
- * set to @addr. @alen must match the current setting for the device.
- */
-int i2c_read(uint8_t chip_addr, unsigned int addr, int alen, uint8_t *buffer,
- int len);
-
-/**
- * i2c_write() - Compatibility function for driver model
- *
- * Calls dm_i2c_write() with the device corresponding to @chip_addr, and offset
- * set to @addr. @alen must match the current setting for the device.
- */
-int i2c_write(uint8_t chip_addr, unsigned int addr, int alen, uint8_t *buffer,
- int len);
-
-/**
- * i2c_get_bus_num_fdt() - Compatibility function for driver model
- *
- * @return the bus number associated with the given device tree node
- */
-int i2c_get_bus_num_fdt(int node);
-
-/**
- * i2c_get_bus_num() - Compatibility function for driver model
- *
- * @return the 'current' bus number
- */
-unsigned int i2c_get_bus_num(void);
-
-/**
- * i2c_set_bus_num() - Compatibility function for driver model
- *
- * Sets the 'current' bus
- */
-int i2c_set_bus_num(unsigned int bus);
-
-static inline void I2C_SET_BUS(unsigned int bus)
-{
- i2c_set_bus_num(bus);
-}
-
-static inline unsigned int I2C_GET_BUS(void)
-{
- return i2c_get_bus_num();
-}
-
-/**
- * i2c_init() - Compatibility function for driver model
- *
- * This function does nothing.
- */
-void i2c_init(int speed, int slaveaddr);
-
-/**
- * board_i2c_init() - Compatibility function for driver model
- *
- * @param blob Device tree blbo
- * @return the number of I2C bus
- */
-void board_i2c_init(const void *blob);
-
-/*
- * Compatibility functions for driver model.
- */
-uint8_t i2c_reg_read(uint8_t addr, uint8_t reg);
-void i2c_reg_write(uint8_t addr, uint8_t reg, uint8_t val);
-
-#endif
-
/**
* struct dm_i2c_ops - driver operations for I2C uclass
*
* @node: Node offset to read from
* @spi: Place to put the decoded information
*/
-int i2c_chip_ofdata_to_platdata(const void *blob, int node,
- struct dm_i2c_chip *chip);
+int i2c_chip_ofdata_to_platdata(struct udevice *dev, struct dm_i2c_chip *chip);
/**
* i2c_dump_msgs() - Dump a list of I2C messages
*/
void i2c_dump_msgs(struct i2c_msg *msg, int nmsgs);
+/**
+ * i2c_emul_find() - Find an emulator for an i2c sandbox device
+ *
+ * This looks at the device's 'emul' phandle
+ *
+ * @dev: Device to find an emulator for
+ * @emulp: Returns the associated emulator, if found *
+ * @return 0 if OK, -ENOENT or -ENODEV if not found
+ */
+int i2c_emul_find(struct udevice *dev, struct udevice **emulp);
+
+/**
+ * i2c_emul_get_device() - Find the device being emulated
+ *
+ * Given an emulator this returns the associated device
+ *
+ * @emul: Emulator for the device
+ * @return device that @emul is emulating
+ */
+struct udevice *i2c_emul_get_device(struct udevice *emul);
+
#ifndef CONFIG_DM_I2C
/*
#if !defined(CONFIG_SYS_RTC_BUS_NUM)
#define CONFIG_SYS_RTC_BUS_NUM 0
#endif
-#if !defined(CONFIG_SYS_DTT_BUS_NUM)
-#define CONFIG_SYS_DTT_BUS_NUM 0
-#endif
#if !defined(CONFIG_SYS_SPD_BUS_NUM)
#define CONFIG_SYS_SPD_BUS_NUM 0
#endif
#endif
#ifndef I2C_SOFT_DECLARATIONS
-# if defined(CONFIG_MPC8260)
-# define I2C_SOFT_DECLARATIONS volatile ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, I2C_PORT);
-# elif defined(CONFIG_8xx)
-# define I2C_SOFT_DECLARATIONS volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
-
-# elif (defined(CONFIG_AT91RM9200) || \
+# if (defined(CONFIG_AT91RM9200) || \
defined(CONFIG_AT91SAM9260) || defined(CONFIG_AT91SAM9261) || \
defined(CONFIG_AT91SAM9263))
# define I2C_SOFT_DECLARATIONS at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA;
# endif
#endif
-#ifdef CONFIG_8xx
-/* Set default value for the I2C bus speed on 8xx. In the
- * future, we'll define these in all 8xx board config files.
- */
-#ifndef CONFIG_SYS_I2C_SPEED
-#define CONFIG_SYS_I2C_SPEED 50000
-#endif
-#endif
-
/*
* Many boards/controllers/drivers don't support an I2C slave interface so
* provide a default slave address for them for use in common code. A real
#endif
void i2c_init(int speed, int slaveaddr);
void i2c_init_board(void);
-#ifdef CONFIG_SYS_I2C_BOARD_LATE_INIT
-void i2c_board_late_init(void);
-#endif
#ifdef CONFIG_SYS_I2C
/*
unsigned int i2c_get_bus_speed(void);
-/*
- * i2c_reloc_fixup:
- *
- * Adjusts I2C pointers after U-Boot is relocated to DRAM
- */
-void i2c_reloc_fixup(void);
-#if defined(CONFIG_SYS_I2C_SOFT)
-void i2c_soft_init(void);
-void i2c_soft_active(void);
-void i2c_soft_tristate(void);
-int i2c_soft_read(void);
-void i2c_soft_sda(int bit);
-void i2c_soft_scl(int bit);
-void i2c_soft_delay(void);
-#endif
#else
/*
{
u8 buf;
-#ifdef CONFIG_8xx
- /* MPC8xx needs this. Maybe one day we can get rid of it. */
- i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
-#endif
-
#ifdef DEBUG
printf("%s: addr=0x%02x, reg=0x%02x\n", __func__, addr, reg);
#endif
static inline void i2c_reg_write(u8 addr, u8 reg, u8 val)
{
-#ifdef CONFIG_8xx
- /* MPC8xx needs this. Maybe one day we can get rid of it. */
- i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
-#endif
-
#ifdef DEBUG
printf("%s: addr=0x%02x, reg=0x%02x, val=0x%02x\n",
__func__, addr, reg, val);
I2C_8, I2C_9, I2C_10,
};
-/* Multi I2C busses handling */
-#ifdef CONFIG_SOFT_I2C_MULTI_BUS
-extern int get_multi_scl_pin(void);
-extern int get_multi_sda_pin(void);
-extern int multi_i2c_init(void);
-#endif
-
/**
* Get FDT values for i2c bus.
*
projects / oweals / u-boot.git / blobdiff