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ipod: Small cleanup of piezo code on PP502x-based iPods

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Basically use proper register names instead of magic values.

PP5002-based ipods (ie ipod1g-3g) use UART1 to drive the piezo vs
PWM of the newer models.

Change-Id: Ia333717a825ac6a0ebf43850fc31fca34178dd88
This commit is contained in:
Solomon Peachy 2025-10-01 20:45:07 -04:00
parent b09ce21023
commit 1ab63c3d92
3 changed files with 13 additions and 10 deletions
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8
firmware/target/arm/ipod/piezo.c
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@ -43,22 +43,22 @@ static inline void piezo_hw_init(void)
{
#ifndef SIMULATOR
/*logf("PIEZO: hw_init");*/
outl(inl(0x70000010) & ~0xc, 0x70000010);
outl(inl(0x6000600c) | 0x20000, 0x6000600c); /* enable device */
DEV_INIT1 &= ~0xc;
DEV_EN |= DEV_PWM;
#endif
}
static void piezo_hw_tick(unsigned int form_and_period)
{
#ifndef SIMULATOR
outl(0x80000000 | form_and_period, 0x7000a000); /* set pitch */
PWM0_CTRL = 0x80000000 | form_and_period;
#endif
}
static inline void piezo_hw_stop(void)
{
#ifndef SIMULATOR
outl(0x0, 0x7000a000); /* piezo off */
PWM0_CTRL = 0;
#endif
}