3  * HMC425A and similar Gain Amplifiers
44 	u32	gain;  member
64 	int code, gain = 0;  in hmc425a_read_raw()  local
70 		code = st->gain;  in hmc425a_read_raw()
74 			gain = ~code * -500;  in hmc425a_read_raw()
77 			gain = ~code * -1000;  in hmc425a_read_raw()
81 			gain = code * -2000;  in hmc425a_read_raw()
85 		*val = gain / 1000;  in hmc425a_read_raw()
86 		*val2 = (gain % 1000) * 1000;  in hmc425a_read_raw()
104 	int code = 0, gain;  in hmc425a_write_raw()  local
108 		gain = (val * 1000) - (val2 / 1000);  in hmc425a_write_raw()
110 		gain = (val * 1000) + (val2 / 1000);  in hmc425a_write_raw()
112 	if (gain > inf->gain_max || gain < inf->gain_min)  in hmc425a_write_raw()
117 		code = ~((abs(gain) / 500) & 0x3F);  in hmc425a_write_raw()
120 		code = ~((abs(gain) / 1000) & 0xF);  in hmc425a_write_raw()
123 		code = (abs(gain) / 2000) & 0xF;  in hmc425a_write_raw()
131 		st->gain = code;  in hmc425a_write_raw()
133 		ret = hmc425a_write(indio_dev, st->gain);  in hmc425a_write_raw()
191 		.default_gain = -0x40, /* set default gain -31.5db*/
200 		.default_gain = -0x10, /* set default gain -15.0db*/
209 		.default_gain = 0xF, /* set default gain -22.0db*/
230 	st->gain = st->chip_info->default_gain;  in hmc425a_probe()
252 	/* Set default gain */  in hmc425a_probe()
253 	hmc425a_write(indio_dev, st->gain);  in hmc425a_probe()
268 MODULE_DESCRIPTION("Analog Devices HMC425A and similar GPIO control Gain Amplifiers");