/*
* This function should only ever be called with interrupts disabled.
*/
static void hs_unmap_irq(hs_socket_t *sp, unsigned int irq)
{
DPRINTK("hs_unmap_irq(sock=%d irq=%d)\n", hs_sockno(sp), irq);
if (irq >= HS_NUM_MAPPED_IRQS)
return;
/* restore the original irq controller */
irq_desc[irq].handler = hs_mapped_irq[irq].old_handler;
}
static void hs_socket_disable_ireq(hs_socket_t *sp)
{
unsigned short cscier;
DPRINTK("hs_socket_disable_ireq(sock=%d)\n", hs_sockno(sp));
cscier = hs_in(sp, CSCIER);
cscier &= ~HD64465_PCCCSCIER_PIREQE_MASK;
hs_out(sp, cscier, CSCIER);
}
/*
* This function should only ever be called with interrupts disabled.
*/
static void hs_map_irq(hs_socket_t *sp, unsigned int irq)
{
DPRINTK("hs_map_irq(sock=%d irq=%d)\n", hs_sockno(sp), irq);
if (irq >= HS_NUM_MAPPED_IRQS)
return;
hs_mapped_irq[irq].sock = sp;
/* insert ourselves as the irq controller */
hs_mapped_irq[irq].old_handler = irq_desc[irq].handler;
irq_desc[irq].handler = &hd64465_ss_irq_type;
}
/*
* This function should only ever be called with interrupts disabled.
*/
static void hs_map_irq(hs_socket_t *sp, unsigned int irq)
{
DPRINTK("hs_map_irq(sock=%d irq=%d)\n", hs_sockno(sp), irq);
if (irq >= HS_NUM_MAPPED_IRQS)
return;
hs_mapped_irq[irq].sock = sp;
/* insert ourselves as the irq controller */
hs_mapped_irq[irq].old_handler = irq_desc[irq].handler;
irq_desc[irq].handler = &hd64465_ss_irq_type;
/*
* some drivers may not ever mess with there interrupts, so
* we must make sure the interrupt for the slot is in the right state
*/
if (irq_desc[irq].status & IRQ_DISABLED)
hs_socket_disable_ireq(hs_mapped_irq[irq].sock);
else if ((irq_desc[irq].status & IRQ_INPROGRESS) == 0)
hs_socket_enable_ireq(hs_mapped_irq[irq].sock);
}
static int hs_set_voltages(hs_socket_t *sp, int Vcc, int Vpp)
{
u_int psr;
u_int vcci = 0;
u_int sock = hs_sockno(sp);
DPRINTK("hs_set_voltage(%d, %d, %d)\n", sock, Vcc, Vpp);
switch (Vcc)
{
case 0: vcci = 0; break;
case 33: vcci = 1; break;
case 50: vcci = 2; break;
default: return 0;
}
/* Note: Vpp = 120 not supported -- Greg Banks */
if (Vpp != 0 && Vpp != Vcc)
return 0;
/* The PSR register holds 8 of the 9 bits which control
* the TPS2206 via its serial interface.
*/
psr = inw(HD64465_REG_PCCPSR);
switch (sock)
{
case 0:
psr &= 0x0f;
psr |= hs_tps2206_avcc[vcci];
psr |= (Vpp == 0 ? 0x00 : 0x02);
break;
case 1:
psr &= 0xf0;
psr |= hs_tps2206_bvcc[vcci];
psr |= (Vpp == 0 ? 0x00 : 0x20);
break;
};
outw(psr, HD64465_REG_PCCPSR);
return 1;
}
static void hs_interrupt(int irq, void *dev, struct pt_regs *regs)
{
hs_socket_t *sp = (hs_socket_t *)dev;
u_int events = 0;
u_int cscr;
cscr = hs_in(sp, CSCR);
DPRINTK("hs_interrupt, cscr=%04x\n", cscr);
/* check for bus-related changes to be reported to Socket Services */
if (cscr & HD64465_PCCCSCR_PCDC) {
/* double-check for a 16-bit card, as we don't support CardBus */
if ((hs_in(sp, ISR) & HD64465_PCCISR_PCD_MASK) != 0) {
printk(KERN_NOTICE MODNAME
": socket %d, card not a supported card type or not inserted correctly\n",
hs_sockno(sp));
/* Don't do the rest unless a card is present */
cscr &= ~(HD64465_PCCCSCR_PCDC|
HD64465_PCCCSCR_PRC|
HD64465_PCCCSCR_PBW|
HD64465_PCCCSCR_PBD|
HD64465_PCCCSCR_PSC);
} else {
cscr &= ~HD64465_PCCCSCR_PCDC;
events |= SS_DETECT; /* card insertion or removal */
}
}
if (cscr & HD64465_PCCCSCR_PRC) {
cscr &= ~HD64465_PCCCSCR_PRC;
events |= SS_READY; /* ready signal changed */
}
if (cscr & HD64465_PCCCSCR_PBW) {
cscr &= ~HD64465_PCCCSCR_PSC;
events |= SS_BATWARN; /* battery warning */
}
if (cscr & HD64465_PCCCSCR_PBD) {
cscr &= ~HD64465_PCCCSCR_PSC;
events |= SS_BATDEAD; /* battery dead */
}
if (cscr & HD64465_PCCCSCR_PSC) {
cscr &= ~HD64465_PCCCSCR_PSC;
events |= SS_STSCHG; /* STSCHG (status changed) signal */
}
if (cscr & HD64465_PCCCSCR_PIREQ) {
cscr &= ~HD64465_PCCCSCR_PIREQ;
/* This should have been dealt with during irq demux */
printk(KERN_NOTICE MODNAME ": unexpected IREQ from card\n");
}
hs_out(sp, cscr, CSCR);
if (events) {
/*
* Arrange for events to be reported to the registered
* event handler function (from CardServices) in a process
* context (keventd) "soon".
*/
spin_lock(&hs_pending_event_lock);
sp->pending_events |= events;
spin_unlock(&hs_pending_event_lock);
schedule_task(&hs_events_task);
}
}
