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 <alexandre.bourdiol@stericsson.com>
Reviewed-by: Marcus COOPER <marcus.xm.cooper@stericsson.com>
Reviewed-by: Philippe LANGLAIS <philippe.langlais@stericsson.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/mfd/ab8500-gpadc.c b/drivers/mfd/ab8500-gpadc.c
index c985b90..e3535c7 100644
--- a/drivers/mfd/ab8500-gpadc.c
+++ b/drivers/mfd/ab8500-gpadc.c
@@ -135,6 +135,8 @@
struct adc_cal_data {
s64 gain;
s64 offset;
+ u16 otp_calib_hi;
+ u16 otp_calib_lo;
};
/**
@@ -829,6 +831,12 @@
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 @@
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 @@
((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 @@
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 @@
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 @@
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);