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backlight: add backlight pwm debug node for tvapi [1/1]

Browse Source 
PD#SWPL-3110

Problem:
add backlight pwm debug node for tvapi

Solution:
1,change pwm node for pwm main parameters(duty, freq, pol)
2,add pwm_info node to display all pwm state

Verify:
verified by t962x_r311

Change-Id: Ibd9575412ca9704a0002073679d19c5426c1838c
Signed-off-by: Shaochan Liu <shaochan.liu@amlogic.com>
This commit is contained in:
Shaochan Liu
2018-12-06 16:58:17 +08:00
committed by Dongjin Kim
parent 11fe2d13cd
commit 585580816c
1 changed files with 73 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

75
drivers/amlogic/media/vout/backlight/aml_bl.c
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@@ -2550,7 +2550,7 @@ static ssize_t bl_status_read(struct class *class,
return len;
}
static ssize_t bl_debug_pwm_show(struct class *class,
static ssize_t bl_debug_pwm_info_show(struct class *class,
struct class_attribute *attr, char *buf)
{
struct bl_config_s *bconf = bl_drv->bconf;
@@ -2559,7 +2559,7 @@ static ssize_t bl_debug_pwm_show(struct class *class,
unsigned int value;
ssize_t len = 0;
len = sprintf(buf, "read backlight pwm state:\n");
len = sprintf(buf, "read backlight pwm info:\n");
switch (bconf->method) {
case BL_CTRL_PWM:
len += sprintf(buf+len,
@@ -2794,6 +2794,76 @@ static ssize_t bl_debug_pwm_show(struct class *class,
return len;
}
static ssize_t bl_debug_pwm_show(struct class *class,
struct class_attribute *attr, char *buf)
{
struct bl_config_s *bconf = bl_drv->bconf;
struct bl_pwm_config_s *bl_pwm;
ssize_t len = 0;
switch (bconf->method) {
case BL_CTRL_PWM:
if (bconf->bl_pwm) {
bl_pwm = bconf->bl_pwm;
len += sprintf(buf+len,
"pwm: freq=%d, pol=%d, duty_max=%d, duty_min=%d, ",
bl_pwm->pwm_freq, bl_pwm->pwm_method,
bl_pwm->pwm_duty_max, bl_pwm->pwm_duty_min);
if (bl_pwm->pwm_duty_max > 100) {
len += sprintf(buf+len,
"duty_value=%d(%d%%)\n",
bl_pwm->pwm_duty,
bl_pwm->pwm_duty*100/255);
} else {
len += sprintf(buf+len,
"duty_value=%d%%\n",
bl_pwm->pwm_duty);
}
}
break;
case BL_CTRL_PWM_COMBO:
if (bconf->bl_pwm_combo0) {
bl_pwm = bconf->bl_pwm_combo0;
len += sprintf(buf+len,
"pwm_0: freq=%d, pol=%d, duty_max=%d, duty_min=%d, ",
bl_pwm->pwm_freq, bl_pwm->pwm_method,
bl_pwm->pwm_duty_max, bl_pwm->pwm_duty_min);
if (bl_pwm->pwm_duty_max > 100) {
len += sprintf(buf+len,
"duty_value=%d(%d%%)\n",
bl_pwm->pwm_duty,
bl_pwm->pwm_duty*100/255);
} else {
len += sprintf(buf+len,
"duty_value=%d%%\n",
bl_pwm->pwm_duty);
}
}
if (bconf->bl_pwm_combo1) {
bl_pwm = bconf->bl_pwm_combo1;
len += sprintf(buf+len,
"pwm_1: freq=%d, pol=%d, duty_max=%d, duty_min=%d, ",
bl_pwm->pwm_freq, bl_pwm->pwm_method,
bl_pwm->pwm_duty_max, bl_pwm->pwm_duty_min);
if (bl_pwm->pwm_duty_max > 100) {
len += sprintf(buf+len,
"duty_value=%d(%d%%)\n",
bl_pwm->pwm_duty,
bl_pwm->pwm_duty*100/255);
} else {
len += sprintf(buf+len,
"duty_value=%d%%\n",
bl_pwm->pwm_duty);
}
}
break;
default:
break;
}
return len;
}
#define BL_DEBUG_PWM_FREQ 0
#define BL_DEBUG_PWM_DUTY 1
#define BL_DEBUG_PWM_POL 2
@@ -3179,6 +3249,7 @@ static ssize_t bl_debug_brightness_store(struct class *class,
static struct class_attribute bl_debug_class_attrs[] = {
__ATTR(help, 0444, bl_debug_help, NULL),
__ATTR(status, 0444, bl_status_read, NULL),
__ATTR(pwm_info, 0644, bl_debug_pwm_info_show, NULL),
__ATTR(pwm, 0644, bl_debug_pwm_show, bl_debug_pwm_store),
__ATTR(power, 0644, bl_debug_power_show, bl_debug_power_store),
__ATTR(step_on, 0644, bl_debug_step_on_show, bl_debug_step_on_store),