Revision 9e61ec31
| b/hw/pl050.c | ||
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/* |
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* Arm PrimeCell PL050 Keyboard / Mouse Interface |
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* |
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* Copyright (c) 2006 CodeSourcery. |
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* Copyright (c) 2006-2007 CodeSourcery.
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* Written by Paul Brook |
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* |
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* This code is licenced under the GPL. |
| ... | ... | |
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int is_mouse; |
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} pl050_state; |
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#define PL050_TXEMPTY (1 << 6) |
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#define PL050_TXBUSY (1 << 5) |
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#define PL050_RXFULL (1 << 4) |
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#define PL050_RXBUSY (1 << 3) |
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#define PL050_RXPARITY (1 << 2) |
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#define PL050_KMIC (1 << 1) |
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#define PL050_KMID (1 << 0) |
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static const unsigned char pl050_id[] = |
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{ 0x50, 0x10, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
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| ... | ... | |
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case 0: /* KMICR */ |
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return s->cr; |
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case 1: /* KMISTAT */ |
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/* KMIC and KMID bits not implemented. */ |
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if (s->pending) {
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return 0x10; |
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} else {
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return 0; |
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{
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uint8_t val; |
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uint32_t stat; |
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val = s->last; |
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val = val ^ (val >> 4); |
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val = val ^ (val >> 2); |
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val = (val ^ (val >> 1)) & 1; |
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stat = PL050_TXEMPTY; |
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if (val) |
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stat |= PL050_RXPARITY; |
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if (s->pending) |
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stat |= PL050_RXFULL; |
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return stat; |
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} |
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case 2: /* KMIDATA */ |
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if (s->pending) |
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