diff options
Diffstat (limited to 'drivers/pcmcia/ti113x.h')
| -rw-r--r-- | drivers/pcmcia/ti113x.h | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/drivers/pcmcia/ti113x.h b/drivers/pcmcia/ti113x.h index aaa70227bfb0..9ffa97d0b16c 100644 --- a/drivers/pcmcia/ti113x.h +++ b/drivers/pcmcia/ti113x.h @@ -296,7 +296,7 @@ static int ti_init(struct yenta_socket *socket) u8 new, reg = exca_readb(socket, I365_INTCTL); new = reg & ~I365_INTR_ENA; - if (socket->cb_irq) + if (socket->dev->irq) new |= I365_INTR_ENA; if (new != reg) exca_writeb(socket, I365_INTCTL, new); @@ -316,14 +316,47 @@ static int ti_override(struct yenta_socket *socket) return 0; } +static void ti113x_use_isa_irq(struct yenta_socket *socket) +{ + int isa_irq = -1; + u8 intctl; + u32 isa_irq_mask = 0; + + if (!isa_probe) + return; + + /* get a free isa int */ + isa_irq_mask = yenta_probe_irq(socket, isa_interrupts); + if (!isa_irq_mask) + return; /* no useable isa irq found */ + + /* choose highest available */ + for (; isa_irq_mask; isa_irq++) + isa_irq_mask >>= 1; + socket->cb_irq = isa_irq; + + exca_writeb(socket, I365_CSCINT, (isa_irq << 4)); + + intctl = exca_readb(socket, I365_INTCTL); + intctl &= ~(I365_INTR_ENA | I365_IRQ_MASK); /* CSC Enable */ + exca_writeb(socket, I365_INTCTL, intctl); + + dev_info(&socket->dev->dev, + "Yenta TI113x: using isa irq %d for CardBus\n", isa_irq); +} + + static int ti113x_override(struct yenta_socket *socket) { u8 cardctl; cardctl = config_readb(socket, TI113X_CARD_CONTROL); cardctl &= ~(TI113X_CCR_PCI_IRQ_ENA | TI113X_CCR_PCI_IREQ | TI113X_CCR_PCI_CSC); - if (socket->cb_irq) + if (socket->dev->irq) cardctl |= TI113X_CCR_PCI_IRQ_ENA | TI113X_CCR_PCI_CSC | TI113X_CCR_PCI_IREQ; + else + ti113x_use_isa_irq(socket); + config_writeb(socket, TI113X_CARD_CONTROL, cardctl); return ti_override(socket); |