static ssize_t store_irblaster_freq(struct device *dev, struct device_attribute *attr,
const char* buf, size_t len)
{
frequency = simple_strtol(buf, NULL, 10);
/* Disable pwm */
if (frequency == 0) {
omap_dm_timer_stop(irb_pwm_timer);
omap_dm_timer_disable(irb_pwm_timer);
irb_state = 0;
return 0;
}
/* Enable pwm */
if (irb_state == 0) {
omap_dm_timer_enable(irb_pwm_timer);
omap_dm_timer_set_pwm(irb_pwm_timer, 0, 1, 2);
omap_dm_timer_start(irb_pwm_timer);
irb_state = 1;
}
pwm_set_speed(irb_pwm_timer, frequency, duty_cycle);
return len;
}
static void omap_pwm_led_set_pwm_cycle(struct omap_pwm_led *led, int cycle)
{
int pwm_frequency = 10000;
int def_on;
pr_debug("%s: cycle: %i\n",
__func__, cycle);
if (led->pdata->bkl_max)
cycle = ( (cycle * led->pdata->bkl_max ) / 255);
if (cycle < led->pdata->bkl_min)
cycle = led->pdata->bkl_min;
if (led->pdata->bkl_freq)
pwm_frequency = led->pdata->bkl_freq;
if (cycle != LED_FULL)
def_on = led->pdata->invert ? 1:0;
else
def_on = led->pdata->invert ? 0:1;
omap_dm_timer_set_pwm(led->intensity_timer, def_on, 1,
OMAP_TIMER_TRIGGER_OVERFLOW_AND_COMPARE);
if (cycle != LED_FULL) {
pwm_set_speed(led->intensity_timer, pwm_frequency, 256-cycle);
omap_dm_timer_start(led->intensity_timer);
} else
omap_dm_timer_stop(led->intensity_timer);
}
static ssize_t store_irblaster_duty(struct device *dev, struct device_attribute *attr,
const char* buf, size_t len)
{
duty_cycle = simple_strtol(buf, NULL, 10);
if (irb_state) pwm_set_speed(irb_pwm_timer, frequency, duty_cycle);
return len;
}
static int panel_set_backlight_level(
struct omap_display *disp, int level)
{
int hw_level;
pr_debug("panel_set_backlight_level [%s] %d\n",
disp != NULL ? disp->panel->name: "cpt_wvga_48", level);
/* skip if panel is not on */
if (panel_state == 0) {
saved_bkl_level = level;
return 0;
}
/* clamp the level */
if (level < 0)
level = 0;
if (level > 255)
level = 255;
/* nothing to do if levels are equal */
if (bkl_level == level)
return 0;
/* stop backlight? */
if (level == 0) {
if (GPIO_EXISTS(display_gpio.bkl_pwon))
omap_set_gpio_dataout(GPIO_PIN(display_gpio.bkl_pwon), 0);
omap_dm_timer_stop(bkl_pwm);
omap_dm_timer_disable(bkl_pwm);
bkl_level = 0;
return 0;
}
/* start backlight? */
if (bkl_level == 0) {
omap_dm_timer_enable(bkl_pwm);
omap_dm_timer_set_pwm(bkl_pwm, 0, 1, 2);
omap_dm_timer_start(bkl_pwm);
if (GPIO_EXISTS(display_gpio.bkl_pwon))
omap_set_gpio_dataout(GPIO_PIN(display_gpio.bkl_pwon), 1);
}
/* set new level, g7 machines have inverted level */
hw_level = level;
if (!machine_is_archos_g6h())
hw_level = 255 - level;
pwm_set_speed(bkl_pwm, 10000, hw_level);
bkl_level = level;
return 0;
}
static int panel_set_vcom_level(
struct omap_display *disp, int level)
{
pr_debug("panel_set_vcom_level [%s] %i\n",
disp->panel->name, level);
/* clamp the level */
if (level < 0)
level = 0;
if (level > 255)
level = 255;
/* nothing to do if levels are equal */
if (vcom_level == level)
return 0;
/* stop vcom? */
if (level == 0) {
omap_dm_timer_stop(vcom_pwm);
omap_dm_timer_disable(vcom_pwm);
vcom_level = 0;
return 0;
}
/* start vcom? */
if (vcom_level == 0) {
omap_dm_timer_enable(vcom_pwm);
omap_dm_timer_set_pwm(vcom_pwm, 0, 1, 2);
omap_dm_timer_start(vcom_pwm);
}
vcom_level = level;
pwm_set_speed(vcom_pwm, 10000, vcom_level);
vcom_level = level;
return 0;
}
