The codes of qe_ic init from a variety of platforms are redundant,
merge them to a common function and put it to irqchip/qe_ic.c

For non-p1021_mds mpc85xx_mds boards, use "qe_ic_init(np, 0,
qe_ic_cascade_low_mpic, qe_ic_cascade_high_mpic);" instead of
"qe_ic_init(np, 0, qe_ic_cascade_muxed_mpic, NULL);".

qe_ic_cascade_muxed_mpic was used for boards has the same interrupt
number for low interrupt and high interrupt, qe_ic_init has checked
if "low interrupt == high interrupt"

Signed-off-by: Zhao Qiang <qiang.z...@nxp.com>
---
 arch/powerpc/platforms/83xx/misc.c            | 15 ---------------
 arch/powerpc/platforms/85xx/corenet_generic.c |  9 ---------
 arch/powerpc/platforms/85xx/mpc85xx_mds.c     | 14 --------------
 arch/powerpc/platforms/85xx/mpc85xx_rdb.c     | 16 ----------------
 arch/powerpc/platforms/85xx/twr_p102x.c       | 14 --------------
 drivers/irqchip/qe_ic.c                       | 16 ++++++++++++++++
 6 files changed, 16 insertions(+), 68 deletions(-)

diff --git a/arch/powerpc/platforms/83xx/misc.c 
b/arch/powerpc/platforms/83xx/misc.c
index 7e923ca..9431fc7 100644
--- a/arch/powerpc/platforms/83xx/misc.c
+++ b/arch/powerpc/platforms/83xx/misc.c
@@ -93,24 +93,9 @@ void __init mpc83xx_ipic_init_IRQ(void)
 }
 
 #ifdef CONFIG_QUICC_ENGINE
-void __init mpc83xx_qe_init_IRQ(void)
-{
-       struct device_node *np;
-
-       np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
-       if (!np) {
-               np = of_find_node_by_type(NULL, "qeic");
-               if (!np)
-                       return;
-       }
-       qe_ic_init(np, 0, qe_ic_cascade_low_ipic, qe_ic_cascade_high_ipic);
-       of_node_put(np);
-}
-
 void __init mpc83xx_ipic_and_qe_init_IRQ(void)
 {
        mpc83xx_ipic_init_IRQ();
-       mpc83xx_qe_init_IRQ();
 }
 #endif /* CONFIG_QUICC_ENGINE */
 
diff --git a/arch/powerpc/platforms/85xx/corenet_generic.c 
b/arch/powerpc/platforms/85xx/corenet_generic.c
index a2b0bc8..526fc2b 100644
--- a/arch/powerpc/platforms/85xx/corenet_generic.c
+++ b/arch/powerpc/platforms/85xx/corenet_generic.c
@@ -41,8 +41,6 @@ void __init corenet_gen_pic_init(void)
        unsigned int flags = MPIC_BIG_ENDIAN | MPIC_SINGLE_DEST_CPU |
                MPIC_NO_RESET;
 
-       struct device_node *np;
-
        if (ppc_md.get_irq == mpic_get_coreint_irq)
                flags |= MPIC_ENABLE_COREINT;
 
@@ -50,13 +48,6 @@ void __init corenet_gen_pic_init(void)
        BUG_ON(mpic == NULL);
 
        mpic_init(mpic);
-
-       np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
-       if (np) {
-               qe_ic_init(np, 0, qe_ic_cascade_low_mpic,
-                               qe_ic_cascade_high_mpic);
-               of_node_put(np);
-       }
 }
 
 /*
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_mds.c 
b/arch/powerpc/platforms/85xx/mpc85xx_mds.c
index f61cbe2..7ae4901 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_mds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_mds.c
@@ -279,20 +279,6 @@ static void __init mpc85xx_mds_qeic_init(void)
                of_node_put(np);
                return;
        }
-
-       np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
-       if (!np) {
-               np = of_find_node_by_type(NULL, "qeic");
-               if (!np)
-                       return;
-       }
-
-       if (machine_is(p1021_mds))
-               qe_ic_init(np, 0, qe_ic_cascade_low_mpic,
-                               qe_ic_cascade_high_mpic);
-       else
-               qe_ic_init(np, 0, qe_ic_cascade_muxed_mpic, NULL);
-       of_node_put(np);
 }
 #else
 static void __init mpc85xx_mds_qe_init(void) { }
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_rdb.c 
b/arch/powerpc/platforms/85xx/mpc85xx_rdb.c
index 3f4dad1..779f54f 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_rdb.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_rdb.c
@@ -49,10 +49,6 @@ void __init mpc85xx_rdb_pic_init(void)
        struct mpic *mpic;
        unsigned long root = of_get_flat_dt_root();
 
-#ifdef CONFIG_QUICC_ENGINE
-       struct device_node *np;
-#endif
-
        if (of_flat_dt_is_compatible(root, "fsl,MPC85XXRDB-CAMP")) {
                mpic = mpic_alloc(NULL, 0, MPIC_NO_RESET |
                        MPIC_BIG_ENDIAN |
@@ -67,18 +63,6 @@ void __init mpc85xx_rdb_pic_init(void)
 
        BUG_ON(mpic == NULL);
        mpic_init(mpic);
-
-#ifdef CONFIG_QUICC_ENGINE
-       np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
-       if (np) {
-               qe_ic_init(np, 0, qe_ic_cascade_low_mpic,
-                               qe_ic_cascade_high_mpic);
-               of_node_put(np);
-
-       } else
-               pr_err("%s: Could not find qe-ic node\n", __func__);
-#endif
-
 }
 
 /*
diff --git a/arch/powerpc/platforms/85xx/twr_p102x.c 
b/arch/powerpc/platforms/85xx/twr_p102x.c
index 71bc255..603e244 100644
--- a/arch/powerpc/platforms/85xx/twr_p102x.c
+++ b/arch/powerpc/platforms/85xx/twr_p102x.c
@@ -35,26 +35,12 @@ static void __init twr_p1025_pic_init(void)
 {
        struct mpic *mpic;
 
-#ifdef CONFIG_QUICC_ENGINE
-       struct device_node *np;
-#endif
-
        mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN |
                        MPIC_SINGLE_DEST_CPU,
                        0, 256, " OpenPIC  ");
 
        BUG_ON(mpic == NULL);
        mpic_init(mpic);
-
-#ifdef CONFIG_QUICC_ENGINE
-       np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
-       if (np) {
-               qe_ic_init(np, 0, qe_ic_cascade_low_mpic,
-                               qe_ic_cascade_high_mpic);
-               of_node_put(np);
-       } else
-               pr_err("Could not find qe-ic node\n");
-#endif
 }
 
 /* ************************************************************************
diff --git a/drivers/irqchip/qe_ic.c b/drivers/irqchip/qe_ic.c
index ec2ca86..38960fc 100644
--- a/drivers/irqchip/qe_ic.c
+++ b/drivers/irqchip/qe_ic.c
@@ -509,4 +509,20 @@ static int __init init_qe_ic_sysfs(void)
        return 0;
 }
 
+static int __init qeic_of_init(void)
+{
+       struct device_node *np;
+
+       np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
+       if (!np) {
+               np = of_find_node_by_type(NULL, "qeic");
+               if (!np)
+                       return;
+       }
+       qe_ic_init(np, 0, qe_ic_cascade_low_mpic,
+                  qe_ic_cascade_high_mpic);
+       of_node_put(np);
+}
+
+subsys_initcall(qeic_of_init);
 subsys_initcall(init_qe_ic_sysfs);
-- 
2.1.0.27.g96db324

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