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https://github.com/zephyrproject-rtos/zephyr
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7e0eed9235
Usually, we want to operate only on "available" device
nodes ("available" means "status is okay and a matching binding is
found"), but that's not true in all cases.
Sometimes we want to operate on special nodes without matching
bindings, such as those describing memory.
To handle the distinction, change various additional devicetree APIs
making it clear that they operate only on available device nodes,
adjusting gen_defines and devicetree.h implementation details
accordingly:
- emit macros for all existing nodes in gen_defines.py, regardless
of status or matching binding
- rename DT_NUM_INST to DT_NUM_INST_STATUS_OKAY
- rename DT_NODE_HAS_COMPAT to DT_NODE_HAS_COMPAT_STATUS_OKAY
- rename DT_INST_FOREACH to DT_INST_FOREACH_STATUS_OKAY
- rename DT_ANY_INST_ON_BUS to DT_ANY_INST_ON_BUS_STATUS_OKAY
- rewrite DT_HAS_NODE_STATUS_OKAY in terms of a new DT_NODE_HAS_STATUS
- resurrect DT_HAS_NODE in the form of DT_NODE_EXISTS
- remove DT_COMPAT_ON_BUS as a public API
- use the new default_prop_types edtlib parameter
Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
/* ST Microelectronics STTS751 temperature sensor
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*
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* Copyright (c) 2019 STMicroelectronics
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Datasheet:
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* https://www.st.com/resource/en/datasheet/stts751.pdf
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*/
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#define DT_DRV_COMPAT st_stts751
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#include <string.h>
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#include <drivers/i2c.h>
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#include <logging/log.h>
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#include "stts751.h"
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#if DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c)
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LOG_MODULE_DECLARE(STTS751, CONFIG_SENSOR_LOG_LEVEL);
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static int stts751_i2c_read(struct device *dev, u8_t reg_addr,
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u8_t *value, u16_t len)
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{
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struct stts751_data *data = dev->driver_data;
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const struct stts751_config *cfg = dev->config_info;
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return i2c_burst_read(data->bus, cfg->i2c_slv_addr,
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reg_addr, value, len);
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}
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static int stts751_i2c_write(struct device *dev, u8_t reg_addr,
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u8_t *value, u16_t len)
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{
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struct stts751_data *data = dev->driver_data;
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const struct stts751_config *cfg = dev->config_info;
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return i2c_burst_write(data->bus, cfg->i2c_slv_addr,
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reg_addr, value, len);
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}
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int stts751_i2c_init(struct device *dev)
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{
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struct stts751_data *data = dev->driver_data;
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data->ctx_i2c.read_reg = (stmdev_read_ptr) stts751_i2c_read;
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data->ctx_i2c.write_reg = (stmdev_write_ptr) stts751_i2c_write;
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data->ctx = &data->ctx_i2c;
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data->ctx->handle = dev;
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return 0;
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}
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#endif /* DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c) */
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