diff options
Diffstat (limited to 'zephyr/shim/chip/npcx/i2c.c')
| -rw-r--r-- | zephyr/shim/chip/npcx/i2c.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/zephyr/shim/chip/npcx/i2c.c b/zephyr/shim/chip/npcx/i2c.c new file mode 100644 index 0000000000..1f6fe6336d --- /dev/null +++ b/zephyr/shim/chip/npcx/i2c.c @@ -0,0 +1,44 @@ +/* Copyright 2020 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include <sys/util.h> + +#include "registers.h" +#include "i2c/i2c.h" + +/* Shorthand for getting the device binding for a given devicetree label. */ +#define BINDING_FOR(label) \ + device_get_binding( \ + COND_CODE_1(DT_NODE_HAS_STATUS(DT_NODELABEL(label), okay), \ + (DT_LABEL(DT_NODELABEL(label))), (""))) + +static const struct device *i2c_devices[NPCX_I2C_COUNT]; + +static int init_device_bindings(const struct device *device) +{ + ARG_UNUSED(device); + i2c_devices[NPCX_I2C_PORT0_0] = BINDING_FOR(i2c0_0); + i2c_devices[NPCX_I2C_PORT1_0] = BINDING_FOR(i2c1_0); + i2c_devices[NPCX_I2C_PORT2_0] = BINDING_FOR(i2c2_0); + i2c_devices[NPCX_I2C_PORT3_0] = BINDING_FOR(i2c3_0); +#ifdef CHIP_VARIANT_NPCX7M6G + i2c_devices[NPCX_I2C_PORT4_0] = BINDING_FOR(i2c4_0); +#endif + i2c_devices[NPCX_I2C_PORT4_1] = BINDING_FOR(i2c4_1); + i2c_devices[NPCX_I2C_PORT5_0] = BINDING_FOR(i2c5_0); + i2c_devices[NPCX_I2C_PORT5_1] = BINDING_FOR(i2c5_1); + i2c_devices[NPCX_I2C_PORT6_0] = BINDING_FOR(i2c6_0); + i2c_devices[NPCX_I2C_PORT6_1] = BINDING_FOR(i2c6_1); + i2c_devices[NPCX_I2C_PORT7_0] = BINDING_FOR(i2c7_0); + return 0; +} +SYS_INIT(init_device_bindings, POST_KERNEL, 51); + +const struct device *i2c_get_device_for_port(const int port) +{ + if (port < 0 || port >= NPCX_I2C_COUNT) + return NULL; + return i2c_devices[port]; +} |