diff options
Diffstat (limited to 'hw/omap_i2c.c')
| -rw-r--r-- | hw/omap_i2c.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/hw/omap_i2c.c b/hw/omap_i2c.c index de63309ca3..9915676b1f 100644 --- a/hw/omap_i2c.c +++ b/hw/omap_i2c.c @@ -150,6 +150,8 @@ static void omap_i2c_fifo_run(struct omap_i2c_s *s) } if (ack && s->count_cur) s->stat |= 1 << 4; /* XRDY */ + else + s->stat &= ~(1 << 4); /* XRDY */ if (!s->count_cur) { s->stat |= 1 << 2; /* ARDY */ s->control &= ~(1 << 10); /* MST */ @@ -161,6 +163,8 @@ static void omap_i2c_fifo_run(struct omap_i2c_s *s) } if (s->rxlen) s->stat |= 1 << 3; /* RRDY */ + else + s->stat &= ~(1 << 3); /* RRDY */ } if (!s->count_cur) { if ((s->control >> 1) & 1) { /* STP */ @@ -321,7 +325,8 @@ static void omap_i2c_write(void *opaque, target_phys_addr_t addr, return; } - s->stat &= ~(value & 0x3f); + /* RRDY and XRDY are reset by hardware. (in all versions???) */ + s->stat &= ~(value & 0x27); omap_i2c_interrupts_update(s); break; @@ -376,11 +381,13 @@ static void omap_i2c_write(void *opaque, target_phys_addr_t addr, break; } if ((value & (1 << 15)) && !(value & (1 << 10))) { /* MST */ - printf("%s: I^2C slave mode not supported\n", __FUNCTION__); + fprintf(stderr, "%s: I^2C slave mode not supported\n", + __FUNCTION__); break; } if ((value & (1 << 15)) && value & (1 << 8)) { /* XA */ - printf("%s: 10-bit addressing mode not supported\n", __FUNCTION__); + fprintf(stderr, "%s: 10-bit addressing mode not supported\n", + __FUNCTION__); break; } if ((value & (1 << 15)) && value & (1 << 0)) { /* STT */ @@ -427,7 +434,7 @@ static void omap_i2c_write(void *opaque, target_phys_addr_t addr, omap_i2c_interrupts_update(s); } if (value & (1 << 15)) /* ST_EN */ - printf("%s: System Test not supported\n", __FUNCTION__); + fprintf(stderr, "%s: System Test not supported\n", __FUNCTION__); break; default: |