len0rd/rockbox
1
0
Fork 1
mirror of https://github.com/Rockbox/rockbox.git synced 2025-12-08 20:55:17 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Samsung YP-S3: allow player to stay powered up without the USB cable plugged and implement power_off

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22175 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Bertrik Sikken 2009-08-05 16:16:17 +00:00
parent 7964b69635
commit 4632fc0682
2 changed files with 21 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

21
firmware/target/arm/s5l8700/yps3/power-yps3.c
View file

@ -25,7 +25,8 @@
/* Power handling for the S5L8700 based Samsung YP-S3
Pins involved in with power management:
Pins involved in power management:
* P0.1: stay powered up (even with the USB cable unplugged)
* P1.1: USB power detect
* P4.7: tuner power/enable
* P5.2: unknown output
@ -36,19 +37,26 @@
void power_off(void)
{
/* don't know how to do this yet */
/* take down P0.1 to power off (plugged USB cable overrides this though) */
PDAT0 &= ~(1 << 1);
while(1); /* wait for system to shut down */
}
void power_init(void)
{
/* configure pin P1.1 as input for USB power detect */
/* configure P0.1 as output for power-up and stay powered up */
PCON0 = (PCON0 & ~(3 << 2)) | (1 << 2);
PDAT0 |= (1 << 1);
/* configure P1.1 as input for USB power detect */
PCON1 = (PCON1 & ~0x000000F0) | 0x00000000;
/* enable tuner power pin on P4.7 and turn power off */
/* configure P4.7 as output for tuner power and turn power off */
PCON4 = (PCON4 & ~0xF0000000) | 0x10000000;
PDAT4 &= ~(1 << 7);
/* configure pins P5.2 / P5.3 / P5.6 as output, P5.4 as input */
/* configure P5.2 / P5.3 / P5.6 as output, P5.4 as input */
PCON5 = (PCON5 & ~0x0F0FFF00) | 0x01001100;
PDAT5 &= ~((1 << 2) | (1 << 3) | (1 << 6));
}
@ -66,8 +74,9 @@ unsigned int power_input_status(void)
bool charging_state(void)
{
/* check if charger is enabled */
if (PDAT5 & (1 << 6)) {
/* charger is enabled, check if charging is busy */
/* check if charging is busy */
return (PDAT5 & (1 << 4));
}
return false;