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Sansa Connect: Disable USB clocks when disconnected.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31323 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Tomasz Moń 2011-12-16 11:20:38 +00:00
parent a47982eb60
commit a0b81bdbfc
4 changed files with 106 additions and 19 deletions
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93
firmware/target/arm/tms320dm320/sansa-connect/usb-sansaconnect.c
View file

@ -28,6 +28,60 @@
#include "usb_core.h"
#endif
static bool usb_is_connected = false;
static int usb_detect_callback(struct timeout *tmo)
{
(void)tmo;
if (IO_GIO_BITSET0 & (1 << 9))
{
/* Set GIO33 as normal output, drive it low */
IO_GIO_FSEL3 &= ~(0x0003);
IO_GIO_BITCLR2 = (1 << 1);
/* Disable M48XI crystal resonator */
IO_CLK_LPCTL1 |= 0x01;
/* Drive reset low */
IO_GIO_BITCLR0 = (1 << 7);
/* Disable VLYNQ clock */
IO_CLK_MOD2 &= ~(1 << 13);
usb_is_connected = false;
}
else
{
/* Enable M48XI crystal resonator */
IO_CLK_LPCTL1 &= ~(0x01);
/* Set GIO33 as CLKOUT1B */
IO_GIO_FSEL3 |= 0x0003;
/* Drive reset high */
IO_GIO_BITSET0 = (1 << 7);
/* Enable VLYNQ clock */
IO_CLK_MOD2 |= (1 << 13);
usb_is_connected = true;
}
return 0;
}
void GIO9(void) __attribute__ ((section(".icode")));
void GIO9(void)
{
static struct timeout usb_oneshot;
/* Clear interrupt */
IO_INTC_IRQ1 = (1 << 14);
timeout_register(&usb_oneshot, usb_detect_callback, HZ, 0);
}
bool usb_drv_connected(void)
{
return false;
@ -35,20 +89,47 @@ bool usb_drv_connected(void)
int usb_detect(void)
{
return USB_EXTRACTED;
if (usb_is_connected == true)
{
return USB_INSERTED;
}
else
{
return USB_EXTRACTED;
}
}
void usb_init_device(void)
{
/* set TNETV USB nreset high */
IO_GIO_DIR0 &= ~(1 << 7);
IO_GIO_BITSET0 = (1 << 7);
/* set VLYNQ port functions */
IO_GIO_FSEL1 = 0xAAAA;
IO_GIO_FSEL2 = (IO_GIO_FSEL2 & 0xFFF0) | 0xA;
return;
/* set GIO7 as output (TNETV reset) */
/* set GIO9 as input (USB inserted indicator) */
IO_GIO_INV0 &= ~((1 << 7) | (1 << 9));
IO_GIO_DIR0 = (IO_GIO_DIR0 & ~(1 << 7)) | (1 << 9);
/* Enable interrupt on GIO9 change (any edge) */
IO_GIO_IRQPORT |= (1 << 9);
IO_GIO_IRQEDGE |= (1 << 9);
/* set GIO33 as output (TNETV clock) */
IO_GIO_DIR2 &= ~(1 << 1);
IO_GIO_INV2 &= ~(1 << 1);
/* use M48XI clock on GIO33 */
IO_CLK_OSEL = (IO_CLK_OSEL & 0xF0F) | 0x50;
/* Powerdown internal USB */
IO_CLK_LPCTL1 = 0x11;
/* Disable internal USB clock */
IO_CLK_MOD2 &= ~(1 << 6);
/* Enable USB insert detection interrupt */
IO_INTC_EINT1 |= (1 << 14);
/* Check if USB is connected */
usb_detect_callback(NULL);
}
void usb_enable(bool on)