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ipod4g: Explicitly initialize both UARTs

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This should allow either accesspory port to be used for IAP comms.

No regressions on an ipodphoto and mini2g through the dock connector,
but I don't have any headset-attached accessories to test against.

Change-Id: If217d8147ee871b20ad5f81ba95542379eb9f2dc
This commit is contained in:
Solomon Peachy 2025-07-28 09:38:31 -04:00
parent 8a04d02a1e
commit 9d3e286454
1 changed files with 37 additions and 35 deletions
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72
firmware/target/arm/pp/uart-pp.c
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@ -48,9 +48,40 @@ void serial_setup (void)
{
int tmp;
#if defined(IPOD_COLOR) || defined(IPOD_4G) || defined(IPOD_MINI) || defined(IPOD_MINI2G)
#if defined(IPOD_NANO) || defined(IPOD_VIDEO)
/* Route the Tx/Rx pins. 5G Ipods. ser0, dock conncetor */
(*(volatile unsigned long *)(0x7000008C)) &= ~0x0C;
GPO32_ENABLE &= ~0x0C;
/* Route the Tx/Rx pins. 4G Ipod, MINI & MINI2G ser1, dock connector */
base_RBR = &SER0_RBR;
base_THR = &SER0_THR;
base_LCR = &SER0_LCR;
base_LSR = &SER0_LSR;
base_DLL = &SER0_DLL;
DEV_EN = DEV_EN | DEV_SER0;
CPU_HI_INT_DIS = SER0_MASK;
DEV_RS |= DEV_SER0;
sleep(1);
DEV_RS &= ~DEV_SER0;
SER0_LCR = 0x80; /* Divisor latch enable */
SER0_DLM = 0x00;
SER0_LCR = 0x03; /* Divisor latch disable, 8-N-1 */
SER0_IER = 0x01;
SER0_FCR = 0x07; /* Tx+Rx FIFO reset and FIFO enable */
CPU_INT_EN = HI_MASK;
CPU_HI_INT_EN = SER0_MASK;
tmp = SER0_RBR;
serial_bitrate(0);
#elif defined(IPOD_COLOR) || defined(IPOD_4G) || defined(IPOD_MINI) || defined(IPOD_MINI2G)
/* Route the Tx/Rx pins. 4G Ipods, MINI & MINI2G. ser1, dock connector */
GPIO_CLEAR_BITWISE(GPIOD_ENABLE, 0x6);
GPIO_CLEAR_BITWISE(GPIOD_OUTPUT_EN, 0x6);
@ -80,39 +111,9 @@ void serial_setup (void)
CPU_HI_INT_EN = SER1_MASK;
tmp = SER1_RBR;
#elif defined(IPOD_NANO) || defined(IPOD_VIDEO)
/* Route the Tx/Rx pins. 5G Ipod */
(*(volatile unsigned long *)(0x7000008C)) &= ~0x0C;
GPO32_ENABLE &= ~0x0C;
base_RBR = &SER0_RBR;
base_THR = &SER0_THR;
base_LCR = &SER0_LCR;
base_LSR = &SER0_LSR;
base_DLL = &SER0_DLL;
DEV_EN = DEV_EN | DEV_SER0;
CPU_HI_INT_DIS = SER0_MASK;
DEV_RS |= DEV_SER0;
sleep(1);
DEV_RS &= ~DEV_SER0;
SER0_LCR = 0x80; /* Divisor latch enable */
SER0_DLM = 0x00;
SER0_LCR = 0x03; /* Divisor latch disable, 8-N-1 */
SER0_IER = 0x01;
SER0_FCR = 0x07; /* Tx+Rx FIFO reset and FIFO enable */
CPU_INT_EN = HI_MASK;
CPU_HI_INT_EN = SER0_MASK;
tmp = SER0_RBR;
#else
/* Default Route the Tx/Rx pins. 4G Ipod, ser0, top connector */
serial_bitrate(0);
/* Route the Tx/Rx pins. 4G Ipod, ser0, top connector */
GPIO_CLEAR_BITWISE(GPIOC_INT_EN, 0x8);
GPIO_CLEAR_BITWISE(GPIOC_INT_LEV, 0x8);
GPIOC_INT_CLR = 0x8;
@ -141,11 +142,12 @@ void serial_setup (void)
CPU_HI_INT_EN = SER0_MASK;
tmp = SER0_RBR;
serial_bitrate(0);
#endif
(void)tmp;
serial_bitrate(0);
}
void serial_bitrate(int rate)