From 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 11:13:47 +0200 Subject: Adding upstream version 2.8.0+dfsg. Signed-off-by: Daniel Baumann --- include/drivers/nxp/i2c/i2c.h | 52 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 include/drivers/nxp/i2c/i2c.h (limited to 'include/drivers/nxp/i2c/i2c.h') diff --git a/include/drivers/nxp/i2c/i2c.h b/include/drivers/nxp/i2c/i2c.h new file mode 100644 index 0000000..85e6eb4 --- /dev/null +++ b/include/drivers/nxp/i2c/i2c.h @@ -0,0 +1,52 @@ +/* + * Copyright 2016-2021 NXP + * + * SPDX-License-Identifier: BSD-3-Clause + * + */ + + +#ifndef I2C_H +#define I2C_H + +#include + +#define I2C_TIMEOUT 1000 /* ms */ + +#define I2C_FD_CONSERV 0x7e +#define I2C_CR_DIS (1 << 7) +#define I2C_CR_EN (0 << 7) +#define I2C_CR_MA (1 << 5) +#define I2C_CR_TX (1 << 4) +#define I2C_CR_TX_NAK (1 << 3) +#define I2C_CR_RSTA (1 << 2) +#define I2C_SR_BB (1 << 5) +#define I2C_SR_IDLE (0 << 5) +#define I2C_SR_AL (1 << 4) +#define I2C_SR_IF (1 << 1) +#define I2C_SR_RX_NAK (1 << 0) +#define I2C_SR_RST (I2C_SR_AL | I2C_SR_IF) + +#define I2C_GLITCH_EN 0x8 + +#define i2c_in(a) mmio_read_8((uintptr_t)(a)) +#define i2c_out(a, v) mmio_write_8((uintptr_t)(a), (v)) + +struct ls_i2c { + unsigned char ad; /* I2c Bus Address Register */ + unsigned char fd; /* I2c Bus Frequency Dividor Register */ + unsigned char cr; /* I2c Bus Control Register */ + unsigned char sr; /* I2c Bus Status Register */ + unsigned char dr; /* I2C Bus Data I/O Register */ + unsigned char ic; /* I2C Bus Interrupt Config Register */ + unsigned char dbg; /* I2C Bus Debug Register */ +}; + +void i2c_init(uintptr_t nxp_i2c_addr); +int i2c_read(unsigned char chip, int addr, int alen, + unsigned char *buf, int len); +int i2c_write(unsigned char chip, int addr, int alen, + const unsigned char *buf, int len); +int i2c_probe_chip(unsigned char chip); + +#endif /* I2C_H */ -- cgit v1.2.3