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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/powerpc/platforms/85xx/common.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/powerpc/platforms/85xx/common.c')
-rw-r--r--kernel/arch/powerpc/platforms/85xx/common.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/kernel/arch/powerpc/platforms/85xx/common.c b/kernel/arch/powerpc/platforms/85xx/common.c
new file mode 100644
index 000000000..7bfb9b184
--- /dev/null
+++ b/kernel/arch/powerpc/platforms/85xx/common.c
@@ -0,0 +1,129 @@
+/*
+ * Routines common to most mpc85xx-based boards.
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+
+#include <asm/qe.h>
+#include <sysdev/cpm2_pic.h>
+
+#include "mpc85xx.h"
+
+static const struct of_device_id mpc85xx_common_ids[] __initconst = {
+ { .type = "soc", },
+ { .compatible = "soc", },
+ { .compatible = "simple-bus", },
+ { .name = "cpm", },
+ { .name = "localbus", },
+ { .compatible = "gianfar", },
+ { .compatible = "fsl,qe", },
+ { .compatible = "fsl,cpm2", },
+ { .compatible = "fsl,srio", },
+ /* So that the DMA channel nodes can be probed individually: */
+ { .compatible = "fsl,eloplus-dma", },
+ /* For the PMC driver */
+ { .compatible = "fsl,mpc8548-guts", },
+ /* Probably unnecessary? */
+ { .compatible = "gpio-leds", },
+ /* For all PCI controllers */
+ { .compatible = "fsl,mpc8540-pci", },
+ { .compatible = "fsl,mpc8548-pcie", },
+ { .compatible = "fsl,p1022-pcie", },
+ { .compatible = "fsl,p1010-pcie", },
+ { .compatible = "fsl,p1023-pcie", },
+ { .compatible = "fsl,p4080-pcie", },
+ { .compatible = "fsl,qoriq-pcie-v2.4", },
+ { .compatible = "fsl,qoriq-pcie-v2.3", },
+ { .compatible = "fsl,qoriq-pcie-v2.2", },
+ { .compatible = "fsl,fman", },
+ {},
+};
+
+int __init mpc85xx_common_publish_devices(void)
+{
+ return of_platform_bus_probe(NULL, mpc85xx_common_ids, NULL);
+}
+#ifdef CONFIG_CPM2
+static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
+{
+ struct irq_chip *chip = irq_desc_get_chip(desc);
+ int cascade_irq;
+
+ while ((cascade_irq = cpm2_get_irq()) >= 0)
+ generic_handle_irq(cascade_irq);
+
+ chip->irq_eoi(&desc->irq_data);
+}
+
+
+void __init mpc85xx_cpm2_pic_init(void)
+{
+ struct device_node *np;
+ int irq;
+
+ /* Setup CPM2 PIC */
+ np = of_find_compatible_node(NULL, NULL, "fsl,cpm2-pic");
+ if (np == NULL) {
+ printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n");
+ return;
+ }
+ irq = irq_of_parse_and_map(np, 0);
+ if (irq == NO_IRQ) {
+ of_node_put(np);
+ printk(KERN_ERR "PIC init: got no IRQ for cpm cascade\n");
+ return;
+ }
+
+ cpm2_pic_init(np);
+ of_node_put(np);
+ irq_set_chained_handler(irq, cpm2_cascade);
+}
+#endif
+
+#ifdef CONFIG_QUICC_ENGINE
+void __init mpc85xx_qe_init(void)
+{
+ struct device_node *np;
+
+ np = of_find_compatible_node(NULL, NULL, "fsl,qe");
+ if (!np) {
+ np = of_find_node_by_name(NULL, "qe");
+ if (!np) {
+ pr_err("%s: Could not find Quicc Engine node\n",
+ __func__);
+ return;
+ }
+ }
+
+ if (!of_device_is_available(np)) {
+ of_node_put(np);
+ return;
+ }
+
+ qe_reset();
+ of_node_put(np);
+
+}
+
+void __init mpc85xx_qe_par_io_init(void)
+{
+ struct device_node *np;
+
+ np = of_find_node_by_name(NULL, "par_io");
+ if (np) {
+ struct device_node *ucc;
+
+ par_io_init(np);
+ of_node_put(np);
+
+ for_each_node_by_name(ucc, "ucc")
+ par_io_of_config(ucc);
+
+ }
+}
+#endif