Skip to content

Commit

Permalink
mfd: ab8500-debug: Add support for the AB8540
Browse files Browse the repository at this point in the history 
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>
  • Loading branch information
Lee Jones committed Mar 7, 2013
1 parent e4bffe8 commit bc6b413
Show file tree
Hide file tree
Showing 3 changed files with 332 additions and 1 deletion.
286 changes: 285 additions & 1 deletion drivers/mfd/ab8500-debugfs.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -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);
Expand Down Expand Up @@ -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)
Expand Down
44 changes: 44 additions & 0 deletions drivers/mfd/ab8500-gpadc.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -135,6 +135,8 @@ enum cal_channels {
struct adc_cal_data {
s64 gain;
s64 offset;
u16 otp_calib_hi;
u16 otp_calib_lo;
};

/**
Expand Down Expand Up @@ -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 *
Expand Down Expand Up @@ -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);

Expand Down Expand Up @@ -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);

Expand All @@ -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 -
Expand All @@ -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 -
Expand Down Expand Up @@ -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);

Expand Down
Loading

0 comments on commit bc6b413

Please sign in to comment.