165 static unsigned int inv_icm42600_wm_truncate(unsigned int watermark,  in inv_icm42600_wm_truncate()  argument
171 	wm_size = watermark * packet_size;  in inv_icm42600_wm_truncate()
181  * inv_icm42600_buffer_update_watermark - update watermark FIFO threshold
186  * FIFO watermark threshold is computed based on the required watermark values
187  * set for gyro and accel sensors. Since watermark is all about acceptable data
189  * smallest latency but this is not as simple as choosing the smallest watermark
190  * value. Latency depends on watermark and ODR. It requires several steps:
197  * 3) Since all periods are multiple of each others, watermark is computed by
205 	unsigned int wm_gyro, wm_accel, watermark;  in inv_icm42600_buffer_update_watermark()  local
214 	/* compute sensors latency, depending on sensor watermark and odr */  in inv_icm42600_buffer_update_watermark()
215 	wm_gyro = inv_icm42600_wm_truncate(st->fifo.watermark.gyro, packet_size);  in inv_icm42600_buffer_update_watermark()
216 	wm_accel = inv_icm42600_wm_truncate(st->fifo.watermark.accel, packet_size);  in inv_icm42600_buffer_update_watermark()
223 	/* 0 value for watermark means that the sensor is turned off */  in inv_icm42600_buffer_update_watermark()
225 		watermark = wm_accel;  in inv_icm42600_buffer_update_watermark()
227 		watermark = wm_gyro;  in inv_icm42600_buffer_update_watermark()
240 		watermark = latency / period;  in inv_icm42600_buffer_update_watermark()
241 		if (watermark < 1)  in inv_icm42600_buffer_update_watermark()
242 			watermark = 1;  in inv_icm42600_buffer_update_watermark()
245 	/* compute watermark value in bytes */  in inv_icm42600_buffer_update_watermark()
246 	wm_size = watermark * packet_size;  in inv_icm42600_buffer_update_watermark()
248 	/* changing FIFO watermark requires to turn off watermark interrupt */  in inv_icm42600_buffer_update_watermark()
262 	/* restore watermark interrupt */  in inv_icm42600_buffer_update_watermark()
377 	unsigned int *watermark;  in inv_icm42600_buffer_postdisable()  local
387 		watermark = &st->fifo.watermark.gyro;  in inv_icm42600_buffer_postdisable()
391 		watermark = &st->fifo.watermark.accel;  in inv_icm42600_buffer_postdisable()
403 	*watermark = 0;  in inv_icm42600_buffer_postdisable()
594 	 * Enable FIFO partial read and continuous watermark interrupt.  in inv_icm42600_buffer_init()