18 #define SSP_DEV (&data->spi->dev)
19 #define SSP_GET_MESSAGE_TYPE(data) (data & (3 << SSP_RW))  argument
41 	__le32 data;  member
85 static struct ssp_msg *ssp_create_msg(u8 cmd, u16 len, u16 opt, u32 data)  in ssp_create_msg()  argument
97 	h.data = cpu_to_le32(data);  in ssp_create_msg()
164 static int ssp_check_lines(struct ssp_data *data, bool state)  in ssp_check_lines()  argument
168 	gpio_set_value_cansleep(data->ap_mcu_gpio, state);  in ssp_check_lines()
170 	while (gpio_get_value_cansleep(data->mcu_ap_gpio) != state) {  in ssp_check_lines()
173 		if (data->shut_down || delay_cnt++ > 500) {  in ssp_check_lines()
178 				gpio_set_value_cansleep(data->ap_mcu_gpio, 1);  in ssp_check_lines()
187 static int ssp_do_transfer(struct ssp_data *data, struct ssp_msg *msg,  in ssp_do_transfer()  argument
197 	if (data->shut_down)  in ssp_do_transfer()
202 	mutex_lock(&data->comm_lock);  in ssp_do_transfer()
204 	status = ssp_check_lines(data, false);  in ssp_do_transfer()
208 	status = spi_write(data->spi, msg->buffer, SSP_HEADER_SIZE);  in ssp_do_transfer()
210 		gpio_set_value_cansleep(data->ap_mcu_gpio, 1);  in ssp_do_transfer()
216 		mutex_lock(&data->pending_lock);  in ssp_do_transfer()
217 		list_add_tail(&msg->list, &data->pending_list);  in ssp_do_transfer()
218 		mutex_unlock(&data->pending_lock);  in ssp_do_transfer()
221 	status = ssp_check_lines(data, true);  in ssp_do_transfer()
224 			mutex_lock(&data->pending_lock);  in ssp_do_transfer()
226 			mutex_unlock(&data->pending_lock);  in ssp_do_transfer()
231 	mutex_unlock(&data->comm_lock);  in ssp_do_transfer()
237 			mutex_lock(&data->pending_lock);  in ssp_do_transfer()
239 			mutex_unlock(&data->pending_lock);  in ssp_do_transfer()
241 			data->timeout_cnt++;  in ssp_do_transfer()
248 	mutex_unlock(&data->comm_lock);  in ssp_do_transfer()
249 	data->timeout_cnt++;  in ssp_do_transfer()
253 static inline int ssp_spi_sync_command(struct ssp_data *data,  in ssp_spi_sync_command()  argument
256 	return ssp_do_transfer(data, msg, NULL, 0);  in ssp_spi_sync_command()
259 static int ssp_spi_sync(struct ssp_data *data, struct ssp_msg *msg,  in ssp_spi_sync()  argument
267 	return ssp_do_transfer(data, msg, &done, timeout);  in ssp_spi_sync()
270 static int ssp_handle_big_data(struct ssp_data *data, char *dataframe, int *idx)  in ssp_handle_big_data()  argument
277 static int ssp_parse_dataframe(struct ssp_data *data, char *dataframe, int len)  in ssp_parse_dataframe()  argument
282 	struct iio_dev **indio_devs = data->sensor_devs;  in ssp_parse_dataframe()
301 							  data->timestamp);  in ssp_parse_dataframe()
320 			ssp_handle_big_data(data, dataframe, &idx);  in ssp_parse_dataframe()
323 			data->time_syncing = true;  in ssp_parse_dataframe()
326 			ssp_queue_ssp_refresh_task(data, 0);  in ssp_parse_dataframe()
331 	if (data->time_syncing)  in ssp_parse_dataframe()
332 		data->timestamp = ts.tv_sec * 1000000000ULL + ts.tv_nsec;  in ssp_parse_dataframe()
338 int ssp_irq_msg(struct ssp_data *data)  in ssp_irq_msg()  argument
347 	ret = spi_read(data->spi, data->header_buffer, SSP_HEADER_BUFFER_SIZE);  in ssp_irq_msg()
353 	length = le16_to_cpu(data->header_buffer[1]);  in ssp_irq_msg()
354 	msg_options = le16_to_cpu(data->header_buffer[0]);  in ssp_irq_msg()
370 		mutex_lock(&data->pending_lock);  in ssp_irq_msg()
371 		list_for_each_entry_safe(msg, n, &data->pending_list, list) {  in ssp_irq_msg()
392 			ret = spi_read(data->spi, buffer, length);  in ssp_irq_msg()
405 			ret = spi_read(data->spi,  in ssp_irq_msg()
410 			ret = spi_write(data->spi,  in ssp_irq_msg()
418 				list_add_tail(&msg->list, &data->pending_list);  in ssp_irq_msg()
427 		mutex_unlock(&data->pending_lock);  in ssp_irq_msg()
434 		ret = spi_read(data->spi, buffer, length);  in ssp_irq_msg()
441 		ret = ssp_parse_dataframe(data, buffer, length);  in ssp_irq_msg()
454 void ssp_clean_pending_list(struct ssp_data *data)  in ssp_clean_pending_list()  argument
458 	mutex_lock(&data->pending_lock);  in ssp_clean_pending_list()
459 	list_for_each_entry_safe(msg, n, &data->pending_list, list) {  in ssp_clean_pending_list()
466 	mutex_unlock(&data->pending_lock);  in ssp_clean_pending_list()
469 int ssp_command(struct ssp_data *data, char command, int arg)  in ssp_command()  argument
480 	ret = ssp_spi_sync_command(data, msg);  in ssp_command()
486 int ssp_send_instruction(struct ssp_data *data, u8 inst, u8 sensor_type,  in ssp_send_instruction()  argument
492 	if (data->fw_dl_state == SSP_FW_DL_STATE_DOWNLOADING) {  in ssp_send_instruction()
494 			__func__, data->fw_dl_state);  in ssp_send_instruction()
496 	} else if (!(data->available_sensors & BIT(sensor_type)) &&  in ssp_send_instruction()
513 	ret = ssp_spi_sync(data, msg, 1000);  in ssp_send_instruction()
519 int ssp_get_chipid(struct ssp_data *data)  in ssp_get_chipid()  argument
529 	ret = ssp_spi_sync(data, msg, 1000);  in ssp_get_chipid()
538 int ssp_set_magnetic_matrix(struct ssp_data *data)  in ssp_set_magnetic_matrix()  argument
544 			     data->sensorhub_info->mag_length, SSP_AP2HUB_WRITE,  in ssp_set_magnetic_matrix()
549 	ssp_fill_buffer(msg, 0, data->sensorhub_info->mag_table,  in ssp_set_magnetic_matrix()
550 			data->sensorhub_info->mag_length);  in ssp_set_magnetic_matrix()
552 	ret = ssp_spi_sync(data, msg, 1000);  in ssp_set_magnetic_matrix()
558 unsigned int ssp_get_sensor_scanning_info(struct ssp_data *data)  in ssp_get_sensor_scanning_info()  argument
569 	ret = ssp_spi_sync(data, msg, 1000);  in ssp_get_sensor_scanning_info()
585 unsigned int ssp_get_firmware_rev(struct ssp_data *data)  in ssp_get_firmware_rev()  argument
595 	ret = ssp_spi_sync(data, msg, 1000);  in ssp_get_firmware_rev()