4  * SPDX-License-Identifier: Apache-2.0
8 #include <zephyr/dt-bindings/i2c/i2c.h>
37 				  struct i2c_msg *msgs,  in i2c_nrfx_twim_transfer()  argument
40 	struct i2c_nrfx_twim_data *dev_data = dev->data;  in i2c_nrfx_twim_transfer()
41 	const struct i2c_nrfx_twim_common_config *dev_config = dev->config;  in i2c_nrfx_twim_transfer()
43 	uint8_t *msg_buf = dev_config->msg_buf;  in i2c_nrfx_twim_transfer()
45 	uint16_t msg_buf_size = dev_config->msg_buf_size;  in i2c_nrfx_twim_transfer()
49 	k_sem_take(&dev_data->transfer_sync, K_FOREVER);  in i2c_nrfx_twim_transfer()
52 	k_sem_take(&dev_data->completion_sync, K_NO_WAIT);  in i2c_nrfx_twim_transfer()
57 		if (I2C_MSG_ADDR_10_BITS & msgs[i].flags) {  in i2c_nrfx_twim_transfer()
58 			ret = -ENOTSUP;  in i2c_nrfx_twim_transfer()
62 		bool dma_accessible = nrf_dma_accessible_check(&dev_config->twim, msgs[i].buf);  in i2c_nrfx_twim_transfer()
65 		 * - it is not the last fragment  in i2c_nrfx_twim_transfer()
66 		 * - it does not end a bus transaction  in i2c_nrfx_twim_transfer()
67 		 * - the next fragment does not start a bus transaction  in i2c_nrfx_twim_transfer()
68 		 * - the direction of the next fragment is the same as this one  in i2c_nrfx_twim_transfer()
71 				&& !(msgs[i].flags & I2C_MSG_STOP)  in i2c_nrfx_twim_transfer()
72 				&& !(msgs[i + 1].flags & I2C_MSG_RESTART)  in i2c_nrfx_twim_transfer()
73 				&& ((msgs[i].flags & I2C_MSG_READ)  in i2c_nrfx_twim_transfer()
74 				    == (msgs[i + 1].flags & I2C_MSG_READ));  in i2c_nrfx_twim_transfer()
82 			if ((msg_buf_used + msgs[i].len) > msg_buf_size) {  in i2c_nrfx_twim_transfer()
86 					"Adjust the zephyr,concat-buf-size or "  in i2c_nrfx_twim_transfer()
87 					"zephyr,flash-buf-max-size property "  in i2c_nrfx_twim_transfer()
90 					msg_buf_used, msgs[i].len,  in i2c_nrfx_twim_transfer()
91 					msg_buf_size, dev->name);  in i2c_nrfx_twim_transfer()
92 				ret = -ENOSPC;  in i2c_nrfx_twim_transfer()
95 			if (!(msgs[i].flags & I2C_MSG_READ)) {  in i2c_nrfx_twim_transfer()
97 				       msgs[i].buf,  in i2c_nrfx_twim_transfer()
98 				       msgs[i].len);  in i2c_nrfx_twim_transfer()
100 			msg_buf_used += msgs[i].len;  in i2c_nrfx_twim_transfer()
108 			buf = msgs[i].buf;  in i2c_nrfx_twim_transfer()
109 			buf_len = msgs[i].len;  in i2c_nrfx_twim_transfer()
114 		ret = i2c_nrfx_twim_msg_transfer(dev, msgs[i].flags, buf, buf_len, addr);  in i2c_nrfx_twim_transfer()
119 		ret = k_sem_take(&dev_data->completion_sync,  in i2c_nrfx_twim_transfer()
139 			ret = -EIO;  in i2c_nrfx_twim_transfer()
143 		if (dev_data->res != NRFX_SUCCESS) {  in i2c_nrfx_twim_transfer()
144 			ret = -EIO;  in i2c_nrfx_twim_transfer()
151 		if ((msgs[i].flags & I2C_MSG_READ) && (buf == msg_buf)) {  in i2c_nrfx_twim_transfer()
154 			while (msg_buf_used >= msgs[j].len) {  in i2c_nrfx_twim_transfer()
155 				msg_buf_used -= msgs[j].len;  in i2c_nrfx_twim_transfer()
156 				memcpy(msgs[j].buf,  in i2c_nrfx_twim_transfer()
158 				       msgs[j].len);  in i2c_nrfx_twim_transfer()
159 				j--;  in i2c_nrfx_twim_transfer()
169 	k_sem_give(&dev_data->transfer_sync);  in i2c_nrfx_twim_transfer()
177 	struct i2c_nrfx_twim_data *dev_data = dev->data;  in event_handler()
179 	switch (p_event->type) {  in event_handler()
181 		dev_data->res = NRFX_SUCCESS;  in event_handler()
184 		dev_data->res = NRFX_ERROR_DRV_TWI_ERR_ANACK;  in event_handler()
187 		dev_data->res = NRFX_ERROR_DRV_TWI_ERR_DNACK;  in event_handler()
190 		dev_data->res = NRFX_ERROR_INTERNAL;  in event_handler()
194 	k_sem_give(&dev_data->completion_sync);  in event_handler()
199 	struct i2c_nrfx_twim_data *data = dev->data;  in i2c_nrfx_twim_init()
201 	k_sem_init(&data->transfer_sync, 1, 1);  in i2c_nrfx_twim_init()
202 	k_sem_init(&data->completion_sync, 0, 1);  in i2c_nrfx_twim_init()
227 #define MSG_BUF_SIZE(idx)  MAX(CONCAT_BUF_SIZE(idx), FLASH_BUF_MAX_SIZE(idx))