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Detect C200v2 variant by reading A7, use A5 or A7 to control backlight and buttonlight depending on the result.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25499 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Tobias Diedrich 2010-04-06 18:32:47 +00:00
parent 36c16ea05d
commit ea907b31ae
4 changed files with 145 additions and 18 deletions
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106
firmware/target/arm/as3525/sansa-c200v2/backlight-c200v2.c
View file

@ -37,26 +37,75 @@ static const int brightness_table[MAX_BRIGHTNESS_SETTING+1] = {
static void _ll_backlight_on(void)
{
GPIOA_PIN(5) = 1<<5;
if (c200v2_variant == 0) {
GPIOA_PIN(5) = 1<<5;
} else {
GPIOA_PIN(7) = 1<<7;
}
}
static void _ll_backlight_off(void)
{
GPIOA_PIN(5) = 0;
if (c200v2_variant == 0) {
GPIOA_PIN(5) = 0;
} else {
GPIOA_PIN(7) = 0;
}
}
static void _ll_buttonlight_on(void)
{
if (c200v2_variant == 1) {
/* Main buttonlight is on A5 */
GPIOA_PIN(5) = 1<<5;
} else {
/* Needed for buttonlight and MicroSD to work at the same time */
/* Turn ROD control on, as the OF does */
GPIOD_DIR |= (1<<7);
SD_MCI_POWER |= (1<<7);
GPIOD_PIN(7) = (1<<7);
}
}
static void _ll_buttonlight_off(void)
{
if (c200v2_variant == 1) {
/* Main buttonlight is on A5 */
GPIOA_PIN(5) = 0;
} else {
/* Needed for buttonlight and MicroSD to work at the same time */
/* Turn ROD control off, as the OF does */
SD_MCI_POWER &= ~(1<<7);
GPIOD_PIN(7) = 0;
GPIOD_DIR &= ~(1<<7);
}
}
void _backlight_pwm(int on)
{
if (on) {
_ll_backlight_on();
if (backlight_is_on)
_ll_backlight_on();
if (buttonlight_is_on)
_ll_buttonlight_on();
} else {
_ll_backlight_off();
if (backlight_is_on)
_ll_backlight_off();
if (buttonlight_is_on)
_ll_buttonlight_off();
}
}
bool _backlight_init(void)
{
GPIOA_DIR |= 1<<5;
if (c200v2_variant == 1) {
/* On this variant A7 is the backlight and
* A5 is the buttonlight */
GPIOA_DIR |= 1<<7;
}
return true;
}
@ -70,21 +119,40 @@ void _backlight_set_brightness(int brightness)
_backlight_off();
}
static void _pwm_on(void)
{
_set_timer2_pwm_ratio(backlight_level);
}
static void _pwm_off(void)
{
if (buttonlight_is_on == 0 && backlight_is_on == 0)
_set_timer2_pwm_ratio(0);
}
void _backlight_on(void)
{
if (backlight_is_on == 1) {
/* Update pwm ratio in case user changed the brightness */
_pwm_on();
return;
}
#ifdef HAVE_LCD_ENABLE
lcd_enable(true); /* power on lcd + visible display */
#endif
if (!backlight_is_on)
_ll_backlight_on();
_set_timer2_pwm_ratio(backlight_level);
_ll_backlight_on();
_pwm_on();
backlight_is_on = 1;
}
void _backlight_off(void)
{
if (backlight_is_on == 0)
return;
backlight_is_on = 0;
_set_timer2_pwm_ratio(0);
_pwm_off();
_ll_backlight_off();
#ifdef HAVE_LCD_ENABLE
lcd_enable(false); /* power off visible display */
@ -93,20 +161,22 @@ void _backlight_off(void)
void _buttonlight_on(void)
{
/* Needed for buttonlight and MicroSD to work at the same time */
/* Turn ROD control on, as the OF does */
GPIOD_DIR |= (1<<7);
SD_MCI_POWER |= (1<<7);
GPIOD_PIN(7) = (1<<7);
if (buttonlight_is_on == 1)
return;
_ll_buttonlight_on();
_pwm_on();
buttonlight_is_on = 1;
}
void _buttonlight_off(void)
{
/* Needed for buttonlight and MicroSD to work at the same time */
/* Turn ROD control off, as the OF does */
SD_MCI_POWER &= ~(1<<7);
GPIOD_PIN(7) = 0;
GPIOD_DIR &= ~(1<<7);
if (buttonlight_is_on == 0)
return;
buttonlight_is_on = 0;
_pwm_off();
_ll_buttonlight_off();
}
/* vim:set ts=4 sw=4 et: */