125  *	(0xffff + 1) * 1000 / 108/2 MHz = 1,213,629.629... ns
161  *	0xffff * 1000 / 108/2 MHz = 1,213,611.11... ns
173 static inline u16 ns_to_lpf_count(unsigned int ns)  in ns_to_lpf_count()  argument
176 		DIV_ROUND_CLOSEST(CX25840_IR_REFCLK_FREQ / 1000000 * ns, 1000));  in ns_to_lpf_count()
181 	/* Duration of the Low Pass Filter rejection window in ns */  in lpf_count_to_ns()
182 	return DIV_ROUND_CLOSEST(count * 1000,  in lpf_count_to_ns()
200 	 * not readable, hence the << 2.  This function returns ns.  in clock_divider_to_resolution()
202 	return DIV_ROUND_CLOSEST((1 << 2)  * ((u32) divider + 1) * 1000,  in clock_divider_to_resolution()
215 	n = (((u64) count << 2) | 0x3) * (divider + 1) * 1000; /* millicycles */  in pulse_width_count_to_ns()
216 	rem = do_div(n, CX25840_IR_REFCLK_FREQ / 1000000);     /* / MHz => ns */  in pulse_width_count_to_ns()
224 static u16 ns_to_pulse_width_count(u32 ns, u16 divider)
234 	n = ((u64) ns) * CX25840_IR_REFCLK_FREQ / 1000000; /* millicycles */
235 	d = (1 << 2) * ((u32) divider + 1) * 1000; /* millicycles/count */
272 static u64 ns_to_pulse_clocks(u32 ns)  in ns_to_pulse_clocks()  argument
276 	clocks = CX25840_IR_REFCLK_FREQ / 1000000 * (u64) ns; /* millicycles  */  in ns_to_pulse_clocks()
277 	rem = do_div(clocks, 1000);                         /* /1000 = cycles */  in ns_to_pulse_clocks()
278 	if (rem >= 1000 / 2)  in ns_to_pulse_clocks()
409 static u32 txclk_tx_s_max_pulse_width(struct i2c_client *c, u32 ns,  in txclk_tx_s_max_pulse_width()  argument
414 	if (ns > IR_MAX_DURATION)  in txclk_tx_s_max_pulse_width()
415 		ns = IR_MAX_DURATION;  in txclk_tx_s_max_pulse_width()
416 	pulse_clocks = ns_to_pulse_clocks(ns);  in txclk_tx_s_max_pulse_width()
422 static u32 rxclk_rx_s_max_pulse_width(struct i2c_client *c, u32 ns,  in rxclk_rx_s_max_pulse_width()  argument
427 	if (ns > IR_MAX_DURATION)  in rxclk_rx_s_max_pulse_width()
428 		ns = IR_MAX_DURATION;  in rxclk_rx_s_max_pulse_width()
429 	pulse_clocks = ns_to_pulse_clocks(ns);  in rxclk_rx_s_max_pulse_width()
671 				  (u16)(p->hw_fifo_data & FIFO_RXTX), divider) / 1000;  in cx25840_ir_rx_read()
678 		v4l2_dbg(2, ir_debug, sd, "rx read: %10u ns  %s  %s\n",  in cx25840_ir_rx_read()
833 	 * from the tx_kfifo, or converted from ns to the proper units from the  in cx25840_ir_tx_write()
1085 	v4l2_info(sd, "\tMax measurable pulse width:        %u us, %llu ns\n",  in cx25840_ir_log_status()
1091 		v4l2_info(sd, "\tMin acceptable pulse width (LPF):  %u us, %u ns\n",  in cx25840_ir_log_status()
1127 	v4l2_info(sd, "\tMax pulse width:                   %u us, %llu ns\n",  in cx25840_ir_log_status()
1163 	/* RC-5: 666,667 ns = 1/36 kHz * 32 cycles * 1 mark * 0.75 */
1164 	/* RC-6: 333,333 ns = 1/36 kHz * 16 cycles * 1 mark * 0.75 */
1165 	.noise_filter_min_width = 333333, /* ns */