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authorLinus Torvalds <torvalds@linux-foundation.org>2012-05-23 09:00:40 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-23 09:00:40 -0700
commit1d767cae4dbd4116fc3b2cc3251a20760f98339f (patch)
tree79a1a48a67a9b4296ce062d61ee863fe7a46c77f /drivers/tty
parent6101167727932a929e37fb8a6eeb68bdbf54d58e (diff)
parent5f19f14fed7786652b9617c633db101d26a42251 (diff)
Merge tag 'sh-for-linus' of git://github.com/pmundt/linux-sh
Pull SuperH updates from Paul Mundt: - New CPUs: SH7734 (SH-4A), SH7264 and SH7269 (SH-2A) - New boards: RSK2+SH7264, RSK2+SH7269 - Unbreaking kgdb for SMP - Consolidation of _32/_64 page fault handling. - watchdog and legacy DMA chainsawing, part 1 - Conversion to evt2irq() hwirq lookup, to support relocation of vectored IRQs for irqdomains. * tag 'sh-for-linus' of git://github.com/pmundt/linux-sh: (98 commits) sh: intc: Kill off special reservation interface. sh: Enable PIO API for hp6xx and se770x. sh: Kill off machvec IRQ hinting. sh: dma: More legacy cpu dma chainsawing. sh: Kill off MAX_DMA_ADDRESS leftovers. sh: Tidy up some of the cpu legacy dma header mess. sh: Move sh4a dma header from cpu-sh4 to cpu-sh4a. sh64: Fix up vmalloc fault range check. Revert "sh: Ensure fixmap and store queue space can co-exist." serial: sh-sci: Fix for port types without BRI interrupts. sh: legacy PCI evt2irq migration. sh: cpu dma evt2irq migration. sh: sh7763rdp evt2irq migration. sh: sdk7780 evt2irq migration. sh: migor evt2irq migration. sh: landisk evt2irq migration. sh: kfr2r09 evt2irq migration. sh: ecovec24 evt2irq migration. sh: ap325rxa evt2irq migration. sh: urquell evt2irq migration. ...
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/sh-sci.c49
1 files changed, 44 insertions, 5 deletions
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 3158e17b665..4604153b795 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1052,9 +1052,17 @@ static int sci_request_irq(struct sci_port *port)
if (SCIx_IRQ_IS_MUXED(port)) {
i = SCIx_MUX_IRQ;
irq = up->irq;
- } else
+ } else {
irq = port->cfg->irqs[i];
+ /*
+ * Certain port types won't support all of the
+ * available interrupt sources.
+ */
+ if (unlikely(!irq))
+ continue;
+ }
+
desc = sci_irq_desc + i;
port->irqstr[j] = kasprintf(GFP_KERNEL, "%s:%s",
dev_name(up->dev), desc->desc);
@@ -1094,6 +1102,15 @@ static void sci_free_irq(struct sci_port *port)
* IRQ first.
*/
for (i = 0; i < SCIx_NR_IRQS; i++) {
+ unsigned int irq = port->cfg->irqs[i];
+
+ /*
+ * Certain port types won't support all of the available
+ * interrupt sources.
+ */
+ if (unlikely(!irq))
+ continue;
+
free_irq(port->cfg->irqs[i], port);
kfree(port->irqstr[i]);
@@ -1564,10 +1581,32 @@ static void sci_enable_ms(struct uart_port *port)
static void sci_break_ctl(struct uart_port *port, int break_state)
{
- /*
- * Not supported by hardware. Most parts couple break and rx
- * interrupts together, with break detection always enabled.
- */
+ struct sci_port *s = to_sci_port(port);
+ struct plat_sci_reg *reg = sci_regmap[s->cfg->regtype] + SCSPTR;
+ unsigned short scscr, scsptr;
+
+ /* check wheter the port has SCSPTR */
+ if (!reg->size) {
+ /*
+ * Not supported by hardware. Most parts couple break and rx
+ * interrupts together, with break detection always enabled.
+ */
+ return;
+ }
+
+ scsptr = serial_port_in(port, SCSPTR);
+ scscr = serial_port_in(port, SCSCR);
+
+ if (break_state == -1) {
+ scsptr = (scsptr | SCSPTR_SPB2IO) & ~SCSPTR_SPB2DT;
+ scscr &= ~SCSCR_TE;
+ } else {
+ scsptr = (scsptr | SCSPTR_SPB2DT) & ~SCSPTR_SPB2IO;
+ scscr |= SCSCR_TE;
+ }
+
+ serial_port_out(port, SCSPTR, scsptr);
+ serial_port_out(port, SCSCR, scscr);
}
#ifdef CONFIG_SERIAL_SH_SCI_DMA