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path: root/drivers/mfd/ab8500-gpadc.c
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Diffstat (limited to 'drivers/mfd/ab8500-gpadc.c')
-rw-r--r--drivers/mfd/ab8500-gpadc.c145
1 files changed, 73 insertions, 72 deletions
diff --git a/drivers/mfd/ab8500-gpadc.c b/drivers/mfd/ab8500-gpadc.c
index c51c1b188..97dcadc8f 100644
--- a/drivers/mfd/ab8500-gpadc.c
+++ b/drivers/mfd/ab8500-gpadc.c
@@ -49,61 +49,61 @@
* OTP register offsets
* Bank : 0x15
*/
-#define AB8500_GPADC_CAL_1 0x0F
-#define AB8500_GPADC_CAL_2 0x10
-#define AB8500_GPADC_CAL_3 0x11
-#define AB8500_GPADC_CAL_4 0x12
-#define AB8500_GPADC_CAL_5 0x13
-#define AB8500_GPADC_CAL_6 0x14
-#define AB8500_GPADC_CAL_7 0x15
+#define AB8500_GPADC_CAL_1 0x0F
+#define AB8500_GPADC_CAL_2 0x10
+#define AB8500_GPADC_CAL_3 0x11
+#define AB8500_GPADC_CAL_4 0x12
+#define AB8500_GPADC_CAL_5 0x13
+#define AB8500_GPADC_CAL_6 0x14
+#define AB8500_GPADC_CAL_7 0x15
/* New calibration for 8540 */
#define AB8540_GPADC_OTP4_REG_7 0x38
#define AB8540_GPADC_OTP4_REG_6 0x39
#define AB8540_GPADC_OTP4_REG_5 0x3A
/* gpadc constants */
-#define EN_VINTCORE12 0x04
-#define EN_VTVOUT 0x02
-#define EN_GPADC 0x01
-#define DIS_GPADC 0x00
-#define AVG_1 0x00
-#define AVG_4 0x20
-#define AVG_8 0x40
-#define AVG_16 0x60
-#define ADC_SW_CONV 0x04
-#define EN_ICHAR 0x80
-#define BTEMP_PULL_UP 0x08
-#define EN_BUF 0x40
-#define DIS_ZERO 0x00
-#define GPADC_BUSY 0x01
-#define EN_FALLING 0x10
-#define EN_TRIG_EDGE 0x02
-#define EN_VBIAS_XTAL_TEMP 0x02
+#define EN_VINTCORE12 0x04
+#define EN_VTVOUT 0x02
+#define EN_GPADC 0x01
+#define DIS_GPADC 0x00
+#define AVG_1 0x00
+#define AVG_4 0x20
+#define AVG_8 0x40
+#define AVG_16 0x60
+#define ADC_SW_CONV 0x04
+#define EN_ICHAR 0x80
+#define BTEMP_PULL_UP 0x08
+#define EN_BUF 0x40
+#define DIS_ZERO 0x00
+#define GPADC_BUSY 0x01
+#define EN_FALLING 0x10
+#define EN_TRIG_EDGE 0x02
+#define EN_VBIAS_XTAL_TEMP 0x02
/* GPADC constants from AB8500 spec, UM0836 */
-#define ADC_RESOLUTION 1024
-#define ADC_CH_BTEMP_MIN 0
-#define ADC_CH_BTEMP_MAX 1350
-#define ADC_CH_DIETEMP_MIN 0
-#define ADC_CH_DIETEMP_MAX 1350
-#define ADC_CH_CHG_V_MIN 0
-#define ADC_CH_CHG_V_MAX 20030
-#define ADC_CH_ACCDET2_MIN 0
-#define ADC_CH_ACCDET2_MAX 2500
-#define ADC_CH_VBAT_MIN 2300
-#define ADC_CH_VBAT_MAX 4800
-#define ADC_CH_CHG_I_MIN 0
-#define ADC_CH_CHG_I_MAX 1500
-#define ADC_CH_BKBAT_MIN 0
-#define ADC_CH_BKBAT_MAX 3200
+#define ADC_RESOLUTION 1024
+#define ADC_CH_BTEMP_MIN 0
+#define ADC_CH_BTEMP_MAX 1350
+#define ADC_CH_DIETEMP_MIN 0
+#define ADC_CH_DIETEMP_MAX 1350
+#define ADC_CH_CHG_V_MIN 0
+#define ADC_CH_CHG_V_MAX 20030
+#define ADC_CH_ACCDET2_MIN 0
+#define ADC_CH_ACCDET2_MAX 2500
+#define ADC_CH_VBAT_MIN 2300
+#define ADC_CH_VBAT_MAX 4800
+#define ADC_CH_CHG_I_MIN 0
+#define ADC_CH_CHG_I_MAX 1500
+#define ADC_CH_BKBAT_MIN 0
+#define ADC_CH_BKBAT_MAX 3200
/* GPADC constants from AB8540 spec */
-#define ADC_CH_IBAT_MIN (-6000) /* mA range measured by ADC for ibat*/
-#define ADC_CH_IBAT_MAX 6000
-#define ADC_CH_IBAT_MIN_V (-60) /* mV range measured by ADC for ibat*/
-#define ADC_CH_IBAT_MAX_V 60
-#define IBAT_VDROP_L (-56) /* mV */
-#define IBAT_VDROP_H 56
+#define ADC_CH_IBAT_MIN (-6000) /* mA range measured by ADC for ibat */
+#define ADC_CH_IBAT_MAX 6000
+#define ADC_CH_IBAT_MIN_V (-60) /* mV range measured by ADC for ibat */
+#define ADC_CH_IBAT_MAX_V 60
+#define IBAT_VDROP_L (-56) /* mV */
+#define IBAT_VDROP_H 56
/* This is used to not lose precision when dividing to get gain and offset */
#define CALIB_SCALE 1000
@@ -179,7 +179,7 @@ struct ab8500_gpadc *ab8500_gpadc_get(char *name)
list_for_each_entry(gpadc, &ab8500_gpadc_list, node) {
if (!strcmp(name, dev_name(gpadc->dev)))
- return gpadc;
+ return gpadc;
}
return ERR_PTR(-ENOENT);
@@ -315,11 +315,12 @@ int ab8500_gpadc_sw_hw_convert(struct ab8500_gpadc *gpadc, u8 channel,
ad_value = ab8500_gpadc_read_raw(gpadc, channel, avg_sample,
trig_edge, trig_timer, conv_type);
-/* On failure retry a second time */
+
+ /* On failure retry a second time */
if (ad_value < 0)
ad_value = ab8500_gpadc_read_raw(gpadc, channel, avg_sample,
trig_edge, trig_timer, conv_type);
-if (ad_value < 0) {
+ if (ad_value < 0) {
dev_err(gpadc->dev, "GPADC raw value failed ch: %d\n",
channel);
return ad_value;
@@ -327,8 +328,9 @@ if (ad_value < 0) {
voltage = ab8500_gpadc_ad_to_voltage(gpadc, channel, ad_value);
if (voltage < 0)
- dev_err(gpadc->dev, "GPADC to voltage conversion failed ch:"
- " %d AD: 0x%x\n", channel, ad_value);
+ dev_err(gpadc->dev,
+ "GPADC to voltage conversion failed ch: %d AD: 0x%x\n",
+ channel, ad_value);
return voltage;
}
@@ -348,10 +350,9 @@ EXPORT_SYMBOL(ab8500_gpadc_sw_hw_convert);
int ab8500_gpadc_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type)
{
- int raw_data;
- raw_data = ab8500_gpadc_double_read_raw(gpadc, channel,
- avg_sample, trig_edge, trig_timer, conv_type, NULL);
- return raw_data;
+ return ab8500_gpadc_double_read_raw(gpadc, channel, avg_sample,
+ trig_edge, trig_timer, conv_type,
+ NULL);
}
int ab8500_gpadc_double_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
@@ -388,7 +389,7 @@ int ab8500_gpadc_double_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
goto out;
if (!(val & GPADC_BUSY))
break;
- msleep(10);
+ msleep(20);
} while (++looplimit < 10);
if (looplimit >= 10 && (val & GPADC_BUSY)) {
dev_err(gpadc->dev, "gpadc_conversion: GPADC busy");
@@ -421,8 +422,7 @@ int ab8500_gpadc_double_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
val_reg1 |= EN_TRIG_EDGE;
if (trig_edge)
val_reg1 |= EN_FALLING;
- }
- else
+ } else
ret = abx500_set_register_interruptible(gpadc->dev,
AB8500_GPADC, AB8500_GPADC_CTRL2_REG, val);
if (ret < 0) {
@@ -449,7 +449,7 @@ int ab8500_gpadc_double_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
* remove when hardware will be availible
*/
delay_min = 1000; /* Delay in micro seconds */
- delay_max = 10000; /* large range to optimise sleep mode */
+ delay_max = 10000; /* large range optimises sleepmode */
break;
}
/* Intentional fallthrough */
@@ -785,9 +785,10 @@ static void ab8500_gpadc_read_calibration_data(struct ab8500_gpadc *gpadc)
<< CALIB_SHIFT_IBAT)
/ (ADC_CH_IBAT_MAX_V - ADC_CH_IBAT_MIN_V);
- gpadc->cal_data[ADC_INPUT_IBAT].gain = V_gain * V2A_gain;
- gpadc->cal_data[ADC_INPUT_IBAT].offset = V_offset *
- V2A_gain + V2A_offset;
+ gpadc->cal_data[ADC_INPUT_IBAT].gain =
+ V_gain * V2A_gain;
+ gpadc->cal_data[ADC_INPUT_IBAT].offset =
+ V_offset * V2A_gain + V2A_offset;
} else {
gpadc->cal_data[ADC_INPUT_IBAT].gain = 0;
}
@@ -923,11 +924,10 @@ static int ab8500_gpadc_probe(struct platform_device *pdev)
int ret = 0;
struct ab8500_gpadc *gpadc;
- gpadc = devm_kzalloc(&pdev->dev, sizeof(struct ab8500_gpadc), GFP_KERNEL);
- if (!gpadc) {
- dev_err(&pdev->dev, "Error: No memory\n");
+ gpadc = devm_kzalloc(&pdev->dev,
+ sizeof(struct ab8500_gpadc), GFP_KERNEL);
+ if (!gpadc)
return -ENOMEM;
- }
gpadc->irq_sw = platform_get_irq_byname(pdev, "SW_CONV_END");
if (gpadc->irq_sw < 0)
@@ -1072,18 +1072,19 @@ void ab8540_gpadc_get_otp(struct ab8500_gpadc *gpadc,
*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 ;
+ *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;
}
subsys_initcall_sync(ab8500_gpadc_init);
module_exit(ab8500_gpadc_exit);
MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Arun R Murthy, Daniel Willerud, Johan Palsson,"
- "M'boumba Cedric Madianga");
+MODULE_AUTHOR("Arun R Murthy");
+MODULE_AUTHOR("Daniel Willerud");
+MODULE_AUTHOR("Johan Palsson");
+MODULE_AUTHOR("M'boumba Cedric Madianga");
MODULE_ALIAS("platform:ab8500_gpadc");
MODULE_DESCRIPTION("AB8500 GPADC driver");
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-18 10:07:01 +0000