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Fix IPod 3G USB Recognition Problem

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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
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@ -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;
}