8  * SPDX-License-Identifier: Apache-2.0
23 #include "i2c-priv.h"
26 	LPI2C_Type *base;  member
46 	const struct rv32m1_lpi2c_config *config = dev->config;  in rv32m1_lpi2c_configure()
52 		/* Slave mode not supported - yet */  in rv32m1_lpi2c_configure()
54 		return -ENOTSUP;  in rv32m1_lpi2c_configure()
58 		/* FSL LPI2C driver only supports 7-bit addressing */  in rv32m1_lpi2c_configure()
60 		return -ENOTSUP;  in rv32m1_lpi2c_configure()
65 		baudrate = KHZ(100);  in rv32m1_lpi2c_configure()
73 	/* TODO: only if SCL pin implements current source pull-up */  in rv32m1_lpi2c_configure()
77 	/* TODO: ultra-fast requires pin_config setting */  in rv32m1_lpi2c_configure()
83 		return -ENOTSUP;  in rv32m1_lpi2c_configure()
86 	err = clock_control_get_rate(config->clock_dev, config->clock_subsys, &clk_freq);  in rv32m1_lpi2c_configure()
89 		return -EINVAL;  in rv32m1_lpi2c_configure()
92 	LPI2C_MasterSetBaudRate(config->base, clk_freq, baudrate);  in rv32m1_lpi2c_configure()
97 static void rv32m1_lpi2c_master_transfer_callback(LPI2C_Type *base,  in rv32m1_lpi2c_master_transfer_callback()  argument
104 	ARG_UNUSED(base);  in rv32m1_lpi2c_master_transfer_callback()
107 	data->completion_status = completionStatus;  in rv32m1_lpi2c_master_transfer_callback()
108 	k_sem_give(&data->completion_sync);  in rv32m1_lpi2c_master_transfer_callback()
130 	const struct rv32m1_lpi2c_config *config = dev->config;  in rv32m1_lpi2c_transfer()
131 	struct rv32m1_lpi2c_data *data = dev->data;  in rv32m1_lpi2c_transfer()
136 	k_sem_take(&data->transfer_sync, K_FOREVER);  in rv32m1_lpi2c_transfer()
140 		if (I2C_MSG_ADDR_10_BITS & msgs->flags) {  in rv32m1_lpi2c_transfer()
141 			ret = -ENOTSUP;  in rv32m1_lpi2c_transfer()
146 		transfer.flags = rv32m1_lpi2c_convert_flags(msgs->flags);  in rv32m1_lpi2c_transfer()
151 		if (i != 0 && !(msgs->flags & I2C_MSG_RESTART)) {  in rv32m1_lpi2c_transfer()
156 		transfer.direction = (msgs->flags & I2C_MSG_READ)  in rv32m1_lpi2c_transfer()
160 		transfer.data = msgs->buf;  in rv32m1_lpi2c_transfer()
161 		transfer.dataSize = msgs->len;  in rv32m1_lpi2c_transfer()
164 		status = LPI2C_MasterTransferNonBlocking(config->base,  in rv32m1_lpi2c_transfer()
165 							 &data->handle,  in rv32m1_lpi2c_transfer()
168 		/* Return an error if the transfer didn't start successfully  in rv32m1_lpi2c_transfer()
173 			ret = -EIO;  in rv32m1_lpi2c_transfer()
178 		k_sem_take(&data->completion_sync, K_FOREVER);  in rv32m1_lpi2c_transfer()
180 		/* Return an error if the transfer didn't complete  in rv32m1_lpi2c_transfer()
183 		if (data->completion_status != kStatus_Success) {  in rv32m1_lpi2c_transfer()
185 				data->completion_status);  in rv32m1_lpi2c_transfer()
186 			LPI2C_MasterTransferAbort(config->base, &data->handle);  in rv32m1_lpi2c_transfer()
187 			ret = -EIO;  in rv32m1_lpi2c_transfer()
196 	k_sem_give(&data->transfer_sync);  in rv32m1_lpi2c_transfer()
202 	const struct rv32m1_lpi2c_config *config = dev->config;  in rv32m1_lpi2c_isr()
203 	struct rv32m1_lpi2c_data *data = dev->data;  in rv32m1_lpi2c_isr()
205 	LPI2C_MasterTransferHandleIRQ(config->base, &data->handle);  in rv32m1_lpi2c_isr()
210 	const struct rv32m1_lpi2c_config *config = dev->config;  in rv32m1_lpi2c_init()
211 	struct rv32m1_lpi2c_data *data = dev->data;  in rv32m1_lpi2c_init()
216 	CLOCK_SetIpSrc(config->clock_ip_name, config->clock_ip_src);  in rv32m1_lpi2c_init()
218 	if (!device_is_ready(config->clock_dev)) {  in rv32m1_lpi2c_init()
220 		return -ENODEV;  in rv32m1_lpi2c_init()
223 	err = clock_control_on(config->clock_dev, config->clock_subsys);  in rv32m1_lpi2c_init()
226 		return -EINVAL;  in rv32m1_lpi2c_init()
229 	err = clock_control_get_rate(config->clock_dev, config->clock_subsys, &clk_freq);  in rv32m1_lpi2c_init()
232 		return -EINVAL;  in rv32m1_lpi2c_init()
236 	LPI2C_MasterInit(config->base, &master_config, clk_freq);  in rv32m1_lpi2c_init()
237 	LPI2C_MasterTransferCreateHandle(config->base, &data->handle,  in rv32m1_lpi2c_init()
241 	dev_cfg = i2c_map_dt_bitrate(config->bitrate);  in rv32m1_lpi2c_init()
248 	err = pinctrl_apply_state(config->pincfg, PINCTRL_STATE_DEFAULT);  in rv32m1_lpi2c_init()
253 	config->irq_config_func(dev);  in rv32m1_lpi2c_init()
270 		.base =                                                        \