[src/trunk]: src/sys/arch/arm/imx * GPIO interrupts of i.MX5 are divided into...

[hkenken <hkenken%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/d882a87ec800
branches:  trunk
changeset: 794688:d882a87ec800
user:      hkenken <hkenken%NetBSD.org@localhost>
date:      Sat Mar 22 05:19:18 2014 +0000

description:
* GPIO interrupts of i.MX5 are divided into two groups.
  add IMX_GPIO_INTR_SPLIT option
* Support GPIO both edge trigger interrupt.

diffstat:

 sys/arch/arm/imx/files.imx51 |   3 ++-
 sys/arch/arm/imx/imxgpio.c   |  41 ++++++++++++++++++++++++++++++++++++++---
 2 files changed, 40 insertions(+), 4 deletions(-)

diffs (109 lines):

diff -r 03376ec007e8 -r d882a87ec800 sys/arch/arm/imx/files.imx51
--- a/sys/arch/arm/imx/files.imx51      Sat Mar 22 04:55:00 2014 +0000
+++ b/sys/arch/arm/imx/files.imx51      Sat Mar 22 05:19:18 2014 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: files.imx51,v 1.6 2014/03/22 04:55:00 hkenken Exp $
+#      $NetBSD: files.imx51,v 1.7 2014/03/22 05:19:18 hkenken Exp $
 #
 # Configuration info for the Freescale i.MX51
 #
@@ -56,6 +56,7 @@
 attach imxgpio at axi
 file   arch/arm/imx/imxgpio.c          imxgpio         needs-flag
 file   arch/arm/imx/imx51_gpio.c       imxgpio
+defflag opt_imxgpio.h                  IMX_GPIO_INTR_SPLIT
 
 # iMX IOMUX
 device imxiomux : bus_space_generic
diff -r 03376ec007e8 -r d882a87ec800 sys/arch/arm/imx/imxgpio.c
--- a/sys/arch/arm/imx/imxgpio.c        Sat Mar 22 04:55:00 2014 +0000
+++ b/sys/arch/arm/imx/imxgpio.c        Sat Mar 22 05:19:18 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: imxgpio.c,v 1.3 2012/10/27 17:17:39 chs Exp $ */
+/*     $NetBSD: imxgpio.c,v 1.4 2014/03/22 05:19:18 hkenken Exp $ */
 
 /*-
  * Copyright (c) 2007 The NetBSD Foundation, Inc.
@@ -29,12 +29,13 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: imxgpio.c,v 1.3 2012/10/27 17:17:39 chs Exp $");
+__KERNEL_RCSID(0, "$NetBSD: imxgpio.c,v 1.4 2014/03/22 05:19:18 hkenken Exp $");
 
 #define        _INTR_PRIVATE
 
 #include "locators.h"
 #include "gpio.h"
+#include "opt_imxgpio.h"
 
 #include <sys/param.h>
 #include <sys/evcnt.h>
@@ -82,7 +83,12 @@
 struct gpio_softc {
        device_t gpio_dev;
        struct pic_softc gpio_pic;
+#if defined(IMX_GPIO_INTR_SPLIT)
+       struct intrsource *gpio_is_0_15;
+       struct intrsource *gpio_is_16_31;
+#else
        struct intrsource *gpio_is;
+#endif
        bus_space_tag_t gpio_memt;
        bus_space_handle_t gpio_memh;
        uint32_t gpio_enable_mask;
@@ -174,6 +180,25 @@
                KASSERT(pending != 0);
                irq = 31 - __builtin_clz(pending);
                pending &= ~__BIT(irq);
+
+               const struct intrsource *is = pic->pic_sources[irq];
+               if (is->is_type == IST_EDGE_BOTH) {
+                       /*
+                        * for both edge
+                        */
+                       uint32_t icr_reg = GPIO_ICR1 + ((is->is_irq & 0x10) >> 2);
+                       v = GPIO_READ(gpio, icr_reg);
+                       uint32_t icr_shift = (is->is_irq & 0x0f) << 1;
+                       uint32_t mask = (3 << icr_shift);
+                       int gtype = __SHIFTOUT(v, mask);
+                       if (gtype == GPIO_ICR_EDGE_RISING)
+                               gtype = GPIO_ICR_EDGE_FALLING;
+                       else if (gtype == GPIO_ICR_EDGE_FALLING)
+                               gtype = GPIO_ICR_EDGE_RISING;
+                       v &= ~mask;
+                       v |= __SHIFTIN(gtype, mask);
+                       GPIO_WRITE(gpio, icr_reg, v);
+               }
                pic_mark_pending(&gpio->gpio_pic, irq);
        } while (pending != 0);
 
@@ -184,7 +209,8 @@
        ((GPIO_ICR_LEVEL_LOW << (2*IST_LEVEL_LOW)) | \
         (GPIO_ICR_LEVEL_HIGH << (2*IST_LEVEL_HIGH)) | \
         (GPIO_ICR_EDGE_RISING << (2*IST_EDGE_RISING)) | \
-        (GPIO_ICR_EDGE_FALLING << (2*IST_EDGE_FALLING)))
+        (GPIO_ICR_EDGE_FALLING << (2*IST_EDGE_FALLING)) | \
+        (GPIO_ICR_EDGE_RISING << (2*IST_EDGE_BOTH)))
 
 void
 gpio_pic_establish_irq(struct pic_softc *pic, struct intrsource *is)
@@ -341,9 +367,18 @@
                aprint_normal(": interrupts %d..%d",
                    irqbase, irqbase + GPIO_NPINS - 1);
 
+#if defined(IMX_GPIO_INTR_SPLIT)
+               gpio->gpio_is_0_15 = intr_establish(intr,
+                   IPL_NET, IST_LEVEL, pic_handle_intr, &gpio->gpio_pic);
+               KASSERT( gpio->gpio_is_0_15 != NULL );
+               gpio->gpio_is_16_31 = intr_establish(intr + 1,
+                   IPL_NET, IST_LEVEL, pic_handle_intr, &gpio->gpio_pic);
+               KASSERT( gpio->gpio_is_16_31 != NULL );
+#else
                gpio->gpio_is = intr_establish(intr,
                    IPL_NET, IST_LEVEL, pic_handle_intr, &gpio->gpio_pic);
                KASSERT( gpio->gpio_is != NULL );
+#endif
        }
        aprint_normal("\n");