Rockbox open source high quality audio player as a Music Player Daemon
mpris
rockbox
mpd
libadwaita
audio
rust
zig
deno
PP502x: Hacky technique to switch UARTs based on which IRQ was triggered
This lets us have multiple serial ports enabled, which will help with
4th-gen ipods that have a serial port in the HP jack as well in the dock.
Change-Id: I6a00a776020848a6908413e05a6f27bad65b2d8e
+21
-4
+6
-3
firmware/target/arm/pp/system-pp502x.c
+6
-3
firmware/target/arm/pp/system-pp502x.c
···
47
47
#if !defined(BOOTLOADER) || defined(HAVE_BOOTLOADER_USB_MODE)
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extern void TIMER1(void);
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extern void TIMER2(void);
50
-
extern void SERIAL_ISR(void);
50
+
extern void SERIAL_ISR(int port);
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#if defined(HAVE_ADJUSTABLE_CPU_FREQ) && (NUM_CORES > 1)
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53
static struct corelock cpufreq_cl SHAREDBSS_ATTR;
···
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/* end PBELL_VIBE500 */
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#endif
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#ifdef IPOD_ACCESSORY_PROTOCOL
190
-
else if (CPU_HI_INT_STAT & (SER0_MASK | SER1_MASK)) {
191
-
SERIAL_ISR();
190
+
else if (CPU_HI_INT_STAT & SER0_MASK) {
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+
SERIAL_ISR(0);
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+
}
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+
else if (CPU_HI_INT_STAT & SER1_MASK) {
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+
SERIAL_ISR(1);
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}
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#endif
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} else {
+15
-1
firmware/target/arm/pp/uart-pp.c
+15
-1
firmware/target/arm/pp/uart-pp.c
···
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188
return (*base_RBR & 0xFF);
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}
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-
void SERIAL_ISR(void)
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+
void SERIAL_ISR(int port)
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{
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static int badbaud = 0;
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static bool newpkt = true;
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char temp;
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+
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+
if (port && base_RBR != &SER1_RBR) {
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+
base_RBR = &SER1_RBR;
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+
base_THR = &SER1_THR;
200
+
base_LCR = &SER1_LCR;
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+
base_LSR = &SER1_LSR;
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+
base_DLL = &SER1_DLL;
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+
} else if (!port && base_RBR != &SER0_RBR) {
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+
base_RBR = &SER0_RBR;
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+
base_THR = &SER0_THR;
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+
base_LCR = &SER0_LCR;
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+
base_LSR = &SER0_LSR;
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+
base_DLL = &SER0_DLL;
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+
}
196
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while(rx_rdy())
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212
{