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

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>

diff --git a/drivers/amlogic/media/vout/backlight/aml_bl.c b/drivers/amlogic/media/vout/backlight/aml_bl.c
index 2016f34..ed5efdc 100644 (file)
--- a/drivers/amlogic/media/vout/backlight/aml_bl.c
+++ b/drivers/amlogic/media/vout/backlight/aml_bl.c
@@ -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),