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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>
hifive-unleashed-5.1
Lee Jones 2013-02-26 14:02:31 +00:00
parent e4bffe8d8a
commit bc6b4132bc
3 changed files with 332 additions and 1 deletions
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286
drivers/mfd/ab8500-debugfs.c
View File

@ -1633,6 +1633,254 @@ 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);
@ -2386,7 +2634,43 @@ 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)

44
drivers/mfd/ab8500-gpadc.c
View File

@ -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);

3
include/linux/mfd/abx500/ab8500-gpadc.h
View File

@ -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 */