164  *	(0xffff + 1) * 1000 / 108/2 MHz = 1,213,629.629... ns
200  *	0xffff * 1000 / 108/2 MHz = 1,213,611.11... ns
212 static inline u16 ns_to_lpf_count(unsigned int ns)  in ns_to_lpf_count()  argument
215 		DIV_ROUND_CLOSEST(CX23888_IR_REFCLK_FREQ / 1000000 * ns, 1000));  in ns_to_lpf_count()
220 	/* Duration of the Low Pass Filter rejection window in ns */  in lpf_count_to_ns()
221 	return DIV_ROUND_CLOSEST(count * 1000,  in lpf_count_to_ns()
239 	 * not readable, hence the << 2.  This function returns ns.  in clock_divider_to_resolution()
241 	return DIV_ROUND_CLOSEST((1 << 2)  * ((u32) divider + 1) * 1000,  in clock_divider_to_resolution()
254 	n = (((u64) count << 2) | 0x3) * (divider + 1) * 1000; /* millicycles */  in pulse_width_count_to_ns()
255 	rem = do_div(n, CX23888_IR_REFCLK_FREQ / 1000000);     /* / MHz => ns */  in pulse_width_count_to_ns()
285 static u64 ns_to_pulse_clocks(u32 ns)  in ns_to_pulse_clocks()  argument
289 	clocks = CX23888_IR_REFCLK_FREQ / 1000000 * (u64) ns; /* millicycles  */  in ns_to_pulse_clocks()
290 	rem = do_div(clocks, 1000);                         /* /1000 = cycles */  in ns_to_pulse_clocks()
291 	if (rem >= 1000 / 2)  in ns_to_pulse_clocks()
429 static u32 txclk_tx_s_max_pulse_width(struct cx23885_dev *dev, u32 ns,  in txclk_tx_s_max_pulse_width()  argument
434 	if (ns > IR_MAX_DURATION)  in txclk_tx_s_max_pulse_width()
435 		ns = IR_MAX_DURATION;  in txclk_tx_s_max_pulse_width()
436 	pulse_clocks = ns_to_pulse_clocks(ns);  in txclk_tx_s_max_pulse_width()
442 static u32 rxclk_rx_s_max_pulse_width(struct cx23885_dev *dev, u32 ns,  in rxclk_rx_s_max_pulse_width()  argument
447 	if (ns > IR_MAX_DURATION)  in rxclk_rx_s_max_pulse_width()
448 		ns = IR_MAX_DURATION;  in rxclk_rx_s_max_pulse_width()
449 	pulse_clocks = ns_to_pulse_clocks(ns);  in rxclk_rx_s_max_pulse_width()
666 				  (u16)(p->hw_fifo_data & FIFO_RXTX), divider) / 1000;  in cx23888_ir_rx_read()
673 		v4l2_dbg(2, ir_888_debug, sd, "rx read: %10u ns  %s  %s\n",  in cx23888_ir_rx_read()
992 	v4l2_info(sd, "\tMax measurable pulse width:        %u us, %llu ns\n",  in cx23888_ir_log_status()
998 		v4l2_info(sd, "\tMin acceptable pulse width (LPF):  %u us, %u ns\n",  in cx23888_ir_log_status()
1036 	v4l2_info(sd, "\tMax pulse width:                   %u us, %llu ns\n",  in cx23888_ir_log_status()
1115 	/* RC-5:    666,667 ns = 1/36 kHz * 32 cycles * 1 mark * 0.75 */
1116 	/* RC-6A:   333,333 ns = 1/36 kHz * 16 cycles * 1 mark * 0.75 */
1117 	.noise_filter_min_width = 333333, /* ns */