227 	u16 ch0;  member
673  *	68.1982976 * ch0 / gain0 / mt +
675  *	(ch1 /gain1 / mt) / (25600 * ch0 / gain0 / mt)
678  *	(ch1 /gain1 / mt) / (25600 * ch0 / gain0 / mt)
680  *	(ch1 /gain1 / mt) / (ch0 / gain0 / mt)
682  *	(ch0 / gain0)
684  *	gain0 / ch0
685  * =>	3.126528 * ch1 * ch1 * gain0 / gain1 / gain1 / mt /ch0
687  * lx = (115.7400832 * ch1 / gain1 - 68.1982976 * ch0 / gain0) /
689  * =>	(115.7400832 * ch1 / gain1 - 68.1982976 * ch0 / gain0) /
691  *	ch0
693  * =>	(115.7400832 * ch1 / gain1 - 68.1982976 * ch0 / gain0 +
694  *	  3.126528 * ch1 * ch1 * gain0 / gain1 / gain1 / ch0) /
699  * =>	(0.001331 * 256 * 100 * ch0 / gain0 / mt + 0.0000354 * 256 *
701  * =>	(34.0736 * ch0 / gain0 / mt + 0.90624 * ch1 / gain1 / mt) *
703  * =>	(34.0736 * ch0 / gain0 / mt + 0.90624 * ch1 / gain1 / mt) *
705  * =>	(34.0736 * ch0 / gain0 / mt + 0.90624 * ch1 / gain1 / mt) *
706  *	(0.385 * 256 * 100 * ch1 / gain1 / mt / (256 * 100 * ch0 / gain0 / mt) - 0.66505)
707  * =>	(34.0736 * ch0 / gain0 / mt + 0.90624 * ch1 / gain1 / mt) *
708  *	(9856 * ch1 / gain1 / mt / (25600 * ch0 / gain0 / mt) + 0.66505)
710  *	+ 22.66064768 * ch0 / (gain0 * mt)
712  *	  (25600 * ch0 * gain1 * gain1 * mt)
715  * =>	[0.3489024 * ch1 * ch1 * gain0 / (ch0 * gain1 * gain1)
716  *	 + 22.66064768 * ch0 / gain0
724  *	=> (0.001331 * 256 * 100 * ch0 / gain0 / mt + 0.0000354 * 256 *
726  *	=> (34.0736 * ch0 / gain0 / mt + 0.90624 * ch1 / gain1 / mt) *
727  *	   (-0.05 * 256 * 100 * ch1 / gain1 / mt / (256 * 100 * ch0 / gain0 / mt) + 1.1)
728  *	=> (34.0736 * ch0 / gain0 / mt + 0.90624 * ch1 / gain1 / mt) *
729  *	   (-1280 * ch1 / (gain1 * mt * 25600 * ch0 / gain0 / mt) + 1.1)
730  *	=> (34.0736 * ch0 * -1280 * ch1 * gain0 * mt /( gain0 * mt * gain1 * mt * 25600 * ch0)
731  *	    + 34.0736 * 1.1 * ch0 / (gain0 * mt)
732  *	    + 0.90624 * ch1 * -1280 * ch1 *gain0 * mt / (gain1 * mt *gain1 * mt * 25600 * ch0)
735  *	    + 37.48096  ch0 / (gain0 * mt)
736  *	    - 1159.9872 * ch1 * ch1 * gain0 / (gain1 * gain1 * mt * 25600 * ch0)
739  *		- 0.045312 * ch1 * ch1 * gain0 / (gain1 * gain1 * ch0)
741  *		+ 37.48096  ch0 /gain0
747  * lx = (3.126528 * ch1 * ch1 * gain0 / (ch0 * gain1 * gain1) +
749  *	-68.1982976 * ch0 / gain0
754  *	=> [0.3489024 * ch1 * ch1 * gain0 / (ch0 * gain1 * gain1) +
756  *	    22.66064768 * ch0 / gain0
760  *	=> [-0.045312 * ch1 * ch1 * gain0 / (ch0 * gain1 * gain1) +
762  *	    37.48096  ch0 /(gain0
767  *	 A * ch1 * ch1 * gain0 / (ch0 * gain1 * gain1) +
769  *	 C * ch0 / gain0
821 static u64 bu27034_fixp_calc_t1_64bit(unsigned int coeff, unsigned int ch0,  in bu27034_fixp_calc_t1_64bit()  argument
831 	if (helper > ch0) {  in bu27034_fixp_calc_t1_64bit()
834 		return gain_mul_div_helper(helper64, gain0, ch0);  in bu27034_fixp_calc_t1_64bit()
837 	do_div(helper64, ch0);  in bu27034_fixp_calc_t1_64bit()
843 static u64 bu27034_fixp_calc_t1(unsigned int coeff, unsigned int ch0,  in bu27034_fixp_calc_t1()  argument
860 		return bu27034_fixp_calc_t1_64bit(coeff, ch0, ch1, gain0, gain1);  in bu27034_fixp_calc_t1()
863 		return bu27034_fixp_calc_t1_64bit(coeff, ch0, ch1, gain0, gain1);  in bu27034_fixp_calc_t1()
865 	return tmp / (gain1 * gain1) / ch0;  in bu27034_fixp_calc_t1()
884 static int bu27034_fixp_calc_lx(unsigned int ch0, unsigned int ch1,  in bu27034_fixp_calc_lx()  argument
913 	terms[0] = bu27034_fixp_calc_t1(c->A, ch0, ch1, gain0, gain1);  in bu27034_fixp_calc_lx()
915 	terms[2] = bu27034_fixp_calc_t23(c->C, ch0, gain0);  in bu27034_fixp_calc_lx()
1084 	u16 ch0, ch1;  in bu27034_calc_mlux()  local
1095 	ch0 = max_t(u16, 1, le16_to_cpu(res[0]));  in bu27034_calc_mlux()
1116 		unsigned int div = (unsigned int)ch0 * gain1;  in bu27034_calc_mlux()
1121 		d1_d0_ratio_scaled /= ch0 * gain1;  in bu27034_calc_mlux()
1125 		ret = bu27034_fixp_calc_lx(ch0, ch1, gain0, gain1, meastime, 0);  in bu27034_calc_mlux()
1127 		ret = bu27034_fixp_calc_lx(ch0, ch1, gain0, gain1, meastime, 1);  in bu27034_calc_mlux()
1129 		ret = bu27034_fixp_calc_lx(ch0, ch1, gain0, gain1, meastime, 2);  in bu27034_calc_mlux()
1381 			 * 55mS data ch0 = 0xffff ch1 = 0xffff fits in 26 bits  in bu27034_buffer_thread()