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Fix IPod 3G USB Recognition Problem 

Allow IPod 3rd generation to recognize when USB is connected and reboot into disk mode.
This problem is listed at the bottom of the Ipod status page https://www.rockbox.org/wiki/IpodStatus

Change-Id: I8f32afd065d3a91cddc56fe63454bd082bfa29b9
This commit is contained in:
MichaelRey 2018-11-09 17:51:50 -07:00 committed by Solomon Peachy
parent 5e72616618
commit fbe557d432
2 changed files with 12 additions and 5 deletions
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1
docs/CREDITS
View File

@ -696,6 +696,7 @@ Adrián Tinoco
Boris Kovačević
Stéphane Moutard-Martin
Rune Pade
Michael Rey
The libmad team
The wavpack team

16
firmware/target/arm/pp/usb-fw-pp5002.c
View File

@ -28,12 +28,14 @@
void usb_pin_init(void)
{
/* TODO: add USB init for iPod 3rd gen */
#if defined(IPOD_1G2G) || defined(IPOD_3G)
#if defined(IPOD_1G2G)
/* GPIO C bit 7 is firewire detect */
GPIOC_ENABLE |= 0x80;
GPIOC_OUTPUT_EN &= ~0x80;
#elif defined(IPOD_3G)
/* GPIO D bit 4 is USB detect */
GPIOD_ENABLE |= 0x10;
GPIOD_OUTPUT_EN &= ~0x10;
#endif
}
@ -62,13 +64,17 @@ void usb_enable(bool on)
int usb_detect(void)
{
#if defined(IPOD_1G2G) || defined(IPOD_3G)
#if defined(IPOD_1G2G)
/* GPIO C bit 7 is firewire detect */
if (!(GPIOC_INPUT_VAL & 0x80))
return USB_INSERTED;
#endif
/* TODO: add USB detection for iPod 3rd gen */
#if defined(IPOD_3G)
/* GPIO D bit 4 is USB detect */
if (GPIOD_INPUT_VAL & 0x10)
return USB_INSERTED;
#endif
return USB_EXTRACTED;
}