[PATCH 22/35] mfd: ab8500-debug: Add support for the AB8540
Lee Jones
lee.jones at linaro.org
Fri Feb 15 07:56:53 EST 2013
From: Alexandre Bourdiol <alexandre.bourdiol at stericsson.com>
Allow GPADC debug information to be shown when executing on an AB8540
based platform.
Signed-off-by: Alexandre Bourdiol <alexandre.bourdiol at stericsson.com>
Reviewed-by: Marcus COOPER <marcus.xm.cooper at stericsson.com>
Reviewed-by: Philippe LANGLAIS <philippe.langlais at stericsson.com>
---
drivers/mfd/ab8500-debugfs.c | 286 ++++++++++++++++++++++++++++++-
drivers/mfd/ab8500-gpadc.c | 44 +++++
include/linux/mfd/abx500/ab8500-gpadc.h | 3 +
3 files changed, 332 insertions(+), 1 deletion(-)
diff --git a/drivers/mfd/ab8500-debugfs.c b/drivers/mfd/ab8500-debugfs.c
index ef1bd89..7173406 100644
--- a/drivers/mfd/ab8500-debugfs.c
+++ b/drivers/mfd/ab8500-debugfs.c
@@ -1632,6 +1632,254 @@ static const struct file_operations ab8500_gpadc_die_temp_fops = {
.owner = THIS_MODULE,
};
+static int ab8540_gpadc_xtal_temp_print(struct seq_file *s, void *p)
+{
+ int xtal_temp_raw;
+ int xtal_temp_convert;
+ struct ab8500_gpadc *gpadc;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ xtal_temp_raw = ab8500_gpadc_read_raw(gpadc, XTAL_TEMP,
+ avg_sample, trig_edge, trig_timer, conv_type);
+ xtal_temp_convert = ab8500_gpadc_ad_to_voltage(gpadc, XTAL_TEMP,
+ xtal_temp_raw);
+
+ return seq_printf(s, "%d,0x%X\n",
+ xtal_temp_convert, xtal_temp_raw);
+}
+
+static int ab8540_gpadc_xtal_temp_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ab8540_gpadc_xtal_temp_print,
+ inode->i_private);
+}
+
+static const struct file_operations ab8540_gpadc_xtal_temp_fops = {
+ .open = ab8540_gpadc_xtal_temp_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int ab8540_gpadc_vbat_true_meas_print(struct seq_file *s, void *p)
+{
+ int vbat_true_meas_raw;
+ int vbat_true_meas_convert;
+ struct ab8500_gpadc *gpadc;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ vbat_true_meas_raw = ab8500_gpadc_read_raw(gpadc, VBAT_TRUE_MEAS,
+ avg_sample, trig_edge, trig_timer, conv_type);
+ vbat_true_meas_convert = ab8500_gpadc_ad_to_voltage(gpadc, VBAT_TRUE_MEAS,
+ vbat_true_meas_raw);
+
+ return seq_printf(s, "%d,0x%X\n",
+ vbat_true_meas_convert, vbat_true_meas_raw);
+}
+
+static int ab8540_gpadc_vbat_true_meas_open(struct inode *inode,
+ struct file *file)
+{
+ return single_open(file, ab8540_gpadc_vbat_true_meas_print,
+ inode->i_private);
+}
+
+static const struct file_operations ab8540_gpadc_vbat_true_meas_fops = {
+ .open = ab8540_gpadc_vbat_true_meas_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int ab8540_gpadc_bat_ctrl_and_ibat_print(struct seq_file *s, void *p)
+{
+ int bat_ctrl_raw;
+ int bat_ctrl_convert;
+ int ibat_raw;
+ int ibat_convert;
+ struct ab8500_gpadc *gpadc;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ bat_ctrl_raw = ab8500_gpadc_double_read_raw(gpadc, BAT_CTRL_AND_IBAT,
+ avg_sample, trig_edge, trig_timer, conv_type, &ibat_raw);
+
+ bat_ctrl_convert = ab8500_gpadc_ad_to_voltage(gpadc, BAT_CTRL,
+ bat_ctrl_raw);
+ ibat_convert = ab8500_gpadc_ad_to_voltage(gpadc, IBAT_VIRTUAL_CHANNEL,
+ ibat_raw);
+
+ return seq_printf(s, "%d,0x%X\n" "%d,0x%X\n",
+ bat_ctrl_convert, bat_ctrl_raw,
+ ibat_convert, ibat_raw);
+}
+
+static int ab8540_gpadc_bat_ctrl_and_ibat_open(struct inode *inode,
+ struct file *file)
+{
+ return single_open(file, ab8540_gpadc_bat_ctrl_and_ibat_print,
+ inode->i_private);
+}
+
+static const struct file_operations ab8540_gpadc_bat_ctrl_and_ibat_fops = {
+ .open = ab8540_gpadc_bat_ctrl_and_ibat_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int ab8540_gpadc_vbat_meas_and_ibat_print(struct seq_file *s, void *p)
+{
+ int vbat_meas_raw;
+ int vbat_meas_convert;
+ int ibat_raw;
+ int ibat_convert;
+ struct ab8500_gpadc *gpadc;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ vbat_meas_raw = ab8500_gpadc_double_read_raw(gpadc, VBAT_MEAS_AND_IBAT,
+ avg_sample, trig_edge, trig_timer, conv_type, &ibat_raw);
+ vbat_meas_convert = ab8500_gpadc_ad_to_voltage(gpadc, MAIN_BAT_V,
+ vbat_meas_raw);
+ ibat_convert = ab8500_gpadc_ad_to_voltage(gpadc, IBAT_VIRTUAL_CHANNEL,
+ ibat_raw);
+
+ return seq_printf(s, "%d,0x%X\n" "%d,0x%X\n",
+ vbat_meas_convert, vbat_meas_raw,
+ ibat_convert, ibat_raw);
+}
+
+static int ab8540_gpadc_vbat_meas_and_ibat_open(struct inode *inode,
+ struct file *file)
+{
+ return single_open(file, ab8540_gpadc_vbat_meas_and_ibat_print,
+ inode->i_private);
+}
+
+static const struct file_operations ab8540_gpadc_vbat_meas_and_ibat_fops = {
+ .open = ab8540_gpadc_vbat_meas_and_ibat_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int ab8540_gpadc_vbat_true_meas_and_ibat_print(struct seq_file *s, void *p)
+{
+ int vbat_true_meas_raw;
+ int vbat_true_meas_convert;
+ int ibat_raw;
+ int ibat_convert;
+ struct ab8500_gpadc *gpadc;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ vbat_true_meas_raw = ab8500_gpadc_double_read_raw(gpadc,
+ VBAT_TRUE_MEAS_AND_IBAT, avg_sample, trig_edge,
+ trig_timer, conv_type, &ibat_raw);
+ vbat_true_meas_convert = ab8500_gpadc_ad_to_voltage(gpadc,
+ VBAT_TRUE_MEAS, vbat_true_meas_raw);
+ ibat_convert = ab8500_gpadc_ad_to_voltage(gpadc, IBAT_VIRTUAL_CHANNEL,
+ ibat_raw);
+
+ return seq_printf(s, "%d,0x%X\n" "%d,0x%X\n",
+ vbat_true_meas_convert, vbat_true_meas_raw,
+ ibat_convert, ibat_raw);
+}
+
+static int ab8540_gpadc_vbat_true_meas_and_ibat_open(struct inode *inode,
+ struct file *file)
+{
+ return single_open(file, ab8540_gpadc_vbat_true_meas_and_ibat_print,
+ inode->i_private);
+}
+
+static const struct file_operations ab8540_gpadc_vbat_true_meas_and_ibat_fops = {
+ .open = ab8540_gpadc_vbat_true_meas_and_ibat_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int ab8540_gpadc_bat_temp_and_ibat_print(struct seq_file *s, void *p)
+{
+ int bat_temp_raw;
+ int bat_temp_convert;
+ int ibat_raw;
+ int ibat_convert;
+ struct ab8500_gpadc *gpadc;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ bat_temp_raw = ab8500_gpadc_double_read_raw(gpadc, BAT_TEMP_AND_IBAT,
+ avg_sample, trig_edge, trig_timer, conv_type, &ibat_raw);
+ bat_temp_convert = ab8500_gpadc_ad_to_voltage(gpadc, BTEMP_BALL,
+ bat_temp_raw);
+ ibat_convert = ab8500_gpadc_ad_to_voltage(gpadc, IBAT_VIRTUAL_CHANNEL,
+ ibat_raw);
+
+ return seq_printf(s, "%d,0x%X\n" "%d,0x%X\n",
+ bat_temp_convert, bat_temp_raw,
+ ibat_convert, ibat_raw);
+}
+
+static int ab8540_gpadc_bat_temp_and_ibat_open(struct inode *inode,
+ struct file *file)
+{
+ return single_open(file, ab8540_gpadc_bat_temp_and_ibat_print,
+ inode->i_private);
+}
+
+static const struct file_operations ab8540_gpadc_bat_temp_and_ibat_fops = {
+ .open = ab8540_gpadc_bat_temp_and_ibat_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int ab8540_gpadc_otp_cal_print(struct seq_file *s, void *p)
+{
+ struct ab8500_gpadc *gpadc;
+ u16 vmain_l, vmain_h, btemp_l, btemp_h;
+ u16 vbat_l, vbat_h, ibat_l, ibat_h;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ ab8540_gpadc_get_otp(gpadc, &vmain_l, &vmain_h, &btemp_l, &btemp_h,
+ &vbat_l, &vbat_h, &ibat_l, &ibat_h);
+ return seq_printf(s, "VMAIN_L:0x%X\n"
+ "VMAIN_H:0x%X\n"
+ "BTEMP_L:0x%X\n"
+ "BTEMP_H:0x%X\n"
+ "VBAT_L:0x%X\n"
+ "VBAT_H:0x%X\n"
+ "IBAT_L:0x%X\n"
+ "IBAT_H:0x%X\n"
+ ,
+ vmain_l,
+ vmain_h,
+ btemp_l,
+ btemp_h,
+ vbat_l,
+ vbat_h,
+ ibat_l,
+ ibat_h);
+}
+
+static int ab8540_gpadc_otp_cal_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ab8540_gpadc_otp_cal_print, inode->i_private);
+}
+
+static const struct file_operations ab8540_gpadc_otp_calib_fops = {
+ .open = ab8540_gpadc_otp_cal_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
static int ab8500_gpadc_avg_sample_print(struct seq_file *s, void *p)
{
return seq_printf(s, "%d\n", avg_sample);
@@ -2385,7 +2633,43 @@ static int ab8500_debug_probe(struct platform_device *plf)
ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_die_temp_fops);
if (!file)
goto err;
-
+ if (is_ab8540(ab8500)) {
+ file = debugfs_create_file("xtal_temp", (S_IRUGO | S_IWUGO),
+ ab8500_gpadc_dir, &plf->dev, &ab8540_gpadc_xtal_temp_fops);
+ if (!file)
+ goto err;
+ file = debugfs_create_file("vbattruemeas", (S_IRUGO | S_IWUGO),
+ ab8500_gpadc_dir, &plf->dev,
+ &ab8540_gpadc_vbat_true_meas_fops);
+ if (!file)
+ goto err;
+ file = debugfs_create_file("batctrl_and_ibat",
+ (S_IRUGO | S_IWUGO), ab8500_gpadc_dir,
+ &plf->dev, &ab8540_gpadc_bat_ctrl_and_ibat_fops);
+ if (!file)
+ goto err;
+ file = debugfs_create_file("vbatmeas_and_ibat",
+ (S_IRUGO | S_IWUGO), ab8500_gpadc_dir,
+ &plf->dev,
+ &ab8540_gpadc_vbat_meas_and_ibat_fops);
+ if (!file)
+ goto err;
+ file = debugfs_create_file("vbattruemeas_and_ibat",
+ (S_IRUGO | S_IWUGO), ab8500_gpadc_dir,
+ &plf->dev,
+ &ab8540_gpadc_vbat_true_meas_and_ibat_fops);
+ if (!file)
+ goto err;
+ file = debugfs_create_file("battemp_and_ibat",
+ (S_IRUGO | S_IWUGO), ab8500_gpadc_dir,
+ &plf->dev, &ab8540_gpadc_bat_temp_and_ibat_fops);
+ if (!file)
+ goto err;
+ file = debugfs_create_file("otp_calib", (S_IRUGO | S_IWUGO),
+ ab8500_gpadc_dir, &plf->dev, &ab8540_gpadc_otp_calib_fops);
+ if (!file)
+ goto err;
+ }
file = debugfs_create_file("avg_sample", (S_IRUGO | S_IWUGO),
ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_avg_sample_fops);
if (!file)
diff --git a/drivers/mfd/ab8500-gpadc.c b/drivers/mfd/ab8500-gpadc.c
index f3712d8..e6fc511 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;
};
/**
@@ -832,6 +834,12 @@ 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 *
@@ -859,6 +867,11 @@ 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);
@@ -895,6 +908,11 @@ 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);
@@ -905,12 +923,16 @@ 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 -
@@ -925,6 +947,9 @@ 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 -
@@ -1136,6 +1161,25 @@ 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);
diff --git a/include/linux/mfd/abx500/ab8500-gpadc.h b/include/linux/mfd/abx500/ab8500-gpadc.h
index 4131437..49ded00 100644
--- a/include/linux/mfd/abx500/ab8500-gpadc.h
+++ b/include/linux/mfd/abx500/ab8500-gpadc.h
@@ -68,5 +68,8 @@ int ab8500_gpadc_double_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
int *ibat);
int ab8500_gpadc_ad_to_voltage(struct ab8500_gpadc *gpadc,
u8 channel, int ad_value);
+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);
#endif /* _AB8500_GPADC_H */
--
1.7.10.4
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