From bc6b4132bcae4b8e59766ba2dae8f377009b26d0 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Tue, 26 Feb 2013 14:02:31 +0000 Subject: mfd: ab8500-debug: Add support for the AB8540 Allow GPADC debug information to be shown when executing on an AB8540 based platform. Signed-off-by: Alexandre Bourdiol Reviewed-by: Marcus COOPER Reviewed-by: Philippe LANGLAIS Acked-by: Samuel Ortiz --- drivers/mfd/ab8500-gpadc.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) (limited to 'drivers/mfd/ab8500-gpadc.c') diff --git a/drivers/mfd/ab8500-gpadc.c b/drivers/mfd/ab8500-gpadc.c index c985b90577f6..e3535c74d5fe 100644 --- a/drivers/mfd/ab8500-gpadc.c +++ b/drivers/mfd/ab8500-gpadc.c @@ -135,6 +135,8 @@ enum cal_channels { struct adc_cal_data { s64 gain; s64 offset; + u16 otp_calib_hi; + u16 otp_calib_lo; }; /** @@ -829,6 +831,12 @@ static void ab8500_gpadc_read_calibration_data(struct ab8500_gpadc *gpadc) vmain_high = (((gpadc_cal[1] & 0xFF) << 2) | ((gpadc_cal[2] & 0xC0) >> 6)); vmain_low = ((gpadc_cal[2] & 0x3E) >> 1); + + gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_hi = + (u16)vmain_high; + gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_lo = + (u16)vmain_low; + gpadc->cal_data[ADC_INPUT_VMAIN].gain = CALIB_SCALE * (19500 - 315) / (vmain_high - vmain_low); gpadc->cal_data[ADC_INPUT_VMAIN].offset = CALIB_SCALE * @@ -856,6 +864,11 @@ static void ab8500_gpadc_read_calibration_data(struct ab8500_gpadc *gpadc) ibat_low = (((gpadc_otp4[1] & 0x01) << 5) | ((gpadc_otp4[2] & 0xF8) >> 3)); + gpadc->cal_data[ADC_INPUT_IBAT].otp_calib_hi = + (u16)ibat_high; + gpadc->cal_data[ADC_INPUT_IBAT].otp_calib_lo = + (u16)ibat_low; + V_gain = ((IBAT_VDROP_H - IBAT_VDROP_L) << CALIB_SHIFT_IBAT) / (ibat_high - ibat_low); @@ -892,6 +905,11 @@ static void ab8500_gpadc_read_calibration_data(struct ab8500_gpadc *gpadc) ((gpadc_cal[2] & 0xC0) >> 6)); vmain_low = ((gpadc_cal[2] & 0x3E) >> 1); + gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_hi = + (u16)vmain_high; + gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_lo = + (u16)vmain_low; + gpadc->cal_data[ADC_INPUT_VMAIN].gain = CALIB_SCALE * (19500 - 315) / (vmain_high - vmain_low); @@ -902,12 +920,16 @@ static void ab8500_gpadc_read_calibration_data(struct ab8500_gpadc *gpadc) gpadc->cal_data[ADC_INPUT_VMAIN].gain = 0; } } + /* Calculate gain and offset for BTEMP if all reads succeeded */ if (!(ret[2] < 0 || ret[3] < 0 || ret[4] < 0)) { btemp_high = (((gpadc_cal[2] & 0x01) << 9) | (gpadc_cal[3] << 1) | ((gpadc_cal[4] & 0x80) >> 7)); btemp_low = ((gpadc_cal[4] & 0x7C) >> 2); + gpadc->cal_data[ADC_INPUT_BTEMP].otp_calib_hi = (u16)btemp_high; + gpadc->cal_data[ADC_INPUT_BTEMP].otp_calib_lo = (u16)btemp_low; + gpadc->cal_data[ADC_INPUT_BTEMP].gain = CALIB_SCALE * (1300 - 21) / (btemp_high - btemp_low); gpadc->cal_data[ADC_INPUT_BTEMP].offset = CALIB_SCALE * 1300 - @@ -922,6 +944,9 @@ static void ab8500_gpadc_read_calibration_data(struct ab8500_gpadc *gpadc) vbat_high = (((gpadc_cal[4] & 0x03) << 8) | gpadc_cal[5]); vbat_low = ((gpadc_cal[6] & 0xFC) >> 2); + gpadc->cal_data[ADC_INPUT_VBAT].otp_calib_hi = (u16)vbat_high; + gpadc->cal_data[ADC_INPUT_VBAT].otp_calib_lo = (u16)vbat_low; + gpadc->cal_data[ADC_INPUT_VBAT].gain = CALIB_SCALE * (4700 - 2380) / (vbat_high - vbat_low); gpadc->cal_data[ADC_INPUT_VBAT].offset = CALIB_SCALE * 4700 - @@ -1131,6 +1156,25 @@ static void __exit ab8500_gpadc_exit(void) platform_driver_unregister(&ab8500_gpadc_driver); } +/** + * ab8540_gpadc_get_otp() - returns OTP values + * + */ +void ab8540_gpadc_get_otp(struct ab8500_gpadc *gpadc, + u16 *vmain_l, u16 *vmain_h, u16 *btemp_l, u16 *btemp_h, + u16 *vbat_l, u16 *vbat_h, u16 *ibat_l, u16 *ibat_h) +{ + *vmain_l = gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_lo; + *vmain_h = gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_hi; + *btemp_l = gpadc->cal_data[ADC_INPUT_BTEMP].otp_calib_lo; + *btemp_h = gpadc->cal_data[ADC_INPUT_BTEMP].otp_calib_hi; + *vbat_l = gpadc->cal_data[ADC_INPUT_VBAT].otp_calib_lo; + *vbat_h = gpadc->cal_data[ADC_INPUT_VBAT].otp_calib_hi; + *ibat_l = gpadc->cal_data[ADC_INPUT_IBAT].otp_calib_lo; + *ibat_h = gpadc->cal_data[ADC_INPUT_IBAT].otp_calib_hi; + return ; +} + subsys_initcall_sync(ab8500_gpadc_init); module_exit(ab8500_gpadc_exit); -- cgit v1.2.3