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path: root/drivers/bcma/driver_chipcommon.c
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Diffstat (limited to 'drivers/bcma/driver_chipcommon.c')
-rw-r--r--drivers/bcma/driver_chipcommon.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/drivers/bcma/driver_chipcommon.c b/drivers/bcma/driver_chipcommon.c
index 851e05bc948a..47cce9d69630 100644
--- a/drivers/bcma/driver_chipcommon.c
+++ b/drivers/bcma/driver_chipcommon.c
@@ -26,6 +26,9 @@ void bcma_core_chipcommon_init(struct bcma_drv_cc *cc)
u32 leddc_on = 10;
u32 leddc_off = 90;
+ if (cc->setup_done)
+ return;
+
if (cc->core->id.rev >= 11)
cc->status = bcma_cc_read32(cc, BCMA_CC_CHIPSTAT);
cc->capabilities = bcma_cc_read32(cc, BCMA_CC_CAP);
@@ -52,6 +55,8 @@ void bcma_core_chipcommon_init(struct bcma_drv_cc *cc)
((leddc_on << BCMA_CC_GPIOTIMER_ONTIME_SHIFT) |
(leddc_off << BCMA_CC_GPIOTIMER_OFFTIME_SHIFT)));
}
+
+ cc->setup_done = true;
}
/* Set chip watchdog reset timer to fire in 'ticks' backplane cycles */
@@ -101,3 +106,51 @@ u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
return bcma_cc_write32_masked(cc, BCMA_CC_GPIOPOL, mask, value);
}
+
+#ifdef CONFIG_BCMA_DRIVER_MIPS
+void bcma_chipco_serial_init(struct bcma_drv_cc *cc)
+{
+ unsigned int irq;
+ u32 baud_base;
+ u32 i;
+ unsigned int ccrev = cc->core->id.rev;
+ struct bcma_serial_port *ports = cc->serial_ports;
+
+ if (ccrev >= 11 && ccrev != 15) {
+ /* Fixed ALP clock */
+ baud_base = bcma_pmu_alp_clock(cc);
+ if (ccrev >= 21) {
+ /* Turn off UART clock before switching clocksource. */
+ bcma_cc_write32(cc, BCMA_CC_CORECTL,
+ bcma_cc_read32(cc, BCMA_CC_CORECTL)
+ & ~BCMA_CC_CORECTL_UARTCLKEN);
+ }
+ /* Set the override bit so we don't divide it */
+ bcma_cc_write32(cc, BCMA_CC_CORECTL,
+ bcma_cc_read32(cc, BCMA_CC_CORECTL)
+ | BCMA_CC_CORECTL_UARTCLK0);
+ if (ccrev >= 21) {
+ /* Re-enable the UART clock. */
+ bcma_cc_write32(cc, BCMA_CC_CORECTL,
+ bcma_cc_read32(cc, BCMA_CC_CORECTL)
+ | BCMA_CC_CORECTL_UARTCLKEN);
+ }
+ } else {
+ pr_err("serial not supported on this device ccrev: 0x%x\n",
+ ccrev);
+ return;
+ }
+
+ irq = bcma_core_mips_irq(cc->core);
+
+ /* Determine the registers of the UARTs */
+ cc->nr_serial_ports = (cc->capabilities & BCMA_CC_CAP_NRUART);
+ for (i = 0; i < cc->nr_serial_ports; i++) {
+ ports[i].regs = cc->core->io_addr + BCMA_CC_UART0_DATA +
+ (i * 256);
+ ports[i].irq = irq;
+ ports[i].baud_base = baud_base;
+ ports[i].reg_shift = 0;
+ }
+}
+#endif /* CONFIG_BCMA_DRIVER_MIPS */