Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

Pull MIPS updates from Ralf Baechle:
 "This is the main pull request for MIPS for 4.5 plus some 4.4 fixes.

  The executive summary:

   - ATH79 platform improvments, use DT bindings for the ATH79 USB PHY.
   - Avoid useless rebuilds for zboot.
   - jz4780: Add NEMC, BCH and NAND device tree nodes
   - Initial support for the MicroChip's DT platform.  As all the device
     drivers are missing this is still of limited use.
   - Some Loongson3 cleanups.
   - The unavoidable whitespace polishing.
   - Reduce clock skew when synchronizing the CPU cycle counters on CPU
     startup.
   - Add MIPS R6 fixes.
   - Lots of cleanups across arch/mips as fallout from KVM.
   - Lots of minor fixes and changes for IEEE 754-2008 support to the
     FPU emulator / fp-assist software.
   - Minor Ralink, BCM47xx and bcm963xx platform support improvments.
   - Support SMP on BCM63168"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (84 commits)
  MIPS: zboot: Add support for serial debug using the PROM
  MIPS: zboot: Avoid useless rebuilds
  MIPS: BMIPS: Enable ARCH_WANT_OPTIONAL_GPIOLIB
  MIPS: bcm63xx: nvram: Remove unused bcm63xx_nvram_get_psi_size() function
  MIPS: bcm963xx: Update bcm_tag field image_sequence
  MIPS: bcm963xx: Move extended flash address to bcm_tag header file
  MIPS: bcm963xx: Move Broadcom BCM963xx image tag data structure
  MIPS: bcm63xx: nvram: Use nvram structure definition from header file
  MIPS: bcm963xx: Add Broadcom BCM963xx board nvram data structure
  MAINTAINERS: Add KVM for MIPS entry
  MIPS: KVM: Add missing newline to kvm_err()
  MIPS: Move KVM specific opcodes into asm/inst.h
  MIPS: KVM: Use cacheops.h definitions
  MIPS: Break down cacheops.h definitions
  MIPS: Use EXCCODE_ constants with set_except_vector()
  MIPS: Update trap codes
  MIPS: Move Cause.ExcCode trap codes to mipsregs.h
  MIPS: KVM: Make kvm_mips_{init,exit}() static
  MIPS: KVM: Refactor added offsetof()s
  MIPS: KVM: Convert EXPORT_SYMBOL to _GPL
  ...

1 files changed, 126 insertions, 0 deletions

diff --git a/arch/mips/pic32/pic32mzda/config.c b/arch/mips/pic32/pic32mzda/config.c
new file mode 100644
index 000000000000..fe293a070003
--- /dev/null
+++ b/arch/mips/pic32/pic32mzda/config.c
@@ -0,0 +1,126 @@
+/*
+ * Purna Chandra Mandal, purna.mandal@microchip.com
+ * Copyright (C) 2015 Microchip Technology Inc.  All rights reserved.
+ *
+ *  This program is free software; you can distribute it and/or modify it
+ *  under the terms of the GNU General Public License (Version 2) as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope it will be useful, but WITHOUT
+ *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ *  for more details.
+ */
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/of_platform.h>
+
+#include <asm/mach-pic32/pic32.h>
+
+#include "pic32mzda.h"
+
+#define PIC32_CFGCON	0x0000
+#define PIC32_DEVID	0x0020
+#define PIC32_SYSKEY	0x0030
+#define PIC32_CFGEBIA	0x00c0
+#define PIC32_CFGEBIC	0x00d0
+#define PIC32_CFGCON2	0x00f0
+#define PIC32_RCON	0x1240
+
+static void __iomem *pic32_conf_base;
+static DEFINE_SPINLOCK(config_lock);
+static u32 pic32_reset_status;
+
+static u32 pic32_conf_get_reg_field(u32 offset, u32 rshift, u32 mask)
+{
+	u32 v;
+
+	v = readl(pic32_conf_base + offset);
+	v >>= rshift;
+	v &= mask;
+
+	return v;
+}
+
+static u32 pic32_conf_modify_atomic(u32 offset, u32 mask, u32 set)
+{
+	u32 v;
+	unsigned long flags;
+
+	spin_lock_irqsave(&config_lock, flags);
+	v = readl(pic32_conf_base + offset);
+	v &= ~mask;
+	v |= (set & mask);
+	writel(v, pic32_conf_base + offset);
+	spin_unlock_irqrestore(&config_lock, flags);
+
+	return 0;
+}
+
+int pic32_enable_lcd(void)
+{
+	return pic32_conf_modify_atomic(PIC32_CFGCON2, BIT(31), BIT(31));
+}
+
+int pic32_disable_lcd(void)
+{
+	return pic32_conf_modify_atomic(PIC32_CFGCON2, BIT(31), 0);
+}
+
+int pic32_set_lcd_mode(int mode)
+{
+	u32 mask = mode ? BIT(30) : 0;
+
+	return pic32_conf_modify_atomic(PIC32_CFGCON2, BIT(30), mask);
+}
+
+int pic32_set_sdhci_adma_fifo_threshold(u32 rthrsh, u32 wthrsh)
+{
+	u32 clr, set;
+
+	clr = (0x3ff << 4) | (0x3ff << 16);
+	set = (rthrsh << 4) | (wthrsh << 16);
+	return pic32_conf_modify_atomic(PIC32_CFGCON2, clr, set);
+}
+
+void pic32_syskey_unlock_debug(const char *func, const ulong line)
+{
+	void __iomem *syskey = pic32_conf_base + PIC32_SYSKEY;
+
+	pr_debug("%s: called from %s:%lu\n", __func__, func, line);
+	writel(0x00000000, syskey);
+	writel(0xAA996655, syskey);
+	writel(0x556699AA, syskey);
+}
+
+static u32 pic32_get_device_id(void)
+{
+	return pic32_conf_get_reg_field(PIC32_DEVID, 0, 0x0fffffff);
+}
+
+static u32 pic32_get_device_version(void)
+{
+	return pic32_conf_get_reg_field(PIC32_DEVID, 28, 0xf);
+}
+
+u32 pic32_get_boot_status(void)
+{
+	return pic32_reset_status;
+}
+EXPORT_SYMBOL(pic32_get_boot_status);
+
+void __init pic32_config_init(void)
+{
+	pic32_conf_base = ioremap(PIC32_BASE_CONFIG, 0x110);
+	if (!pic32_conf_base)
+		panic("pic32: config base not mapped");
+
+	/* Boot Status */
+	pic32_reset_status = readl(pic32_conf_base + PIC32_RCON);
+	writel(-1, PIC32_CLR(pic32_conf_base + PIC32_RCON));
+
+	/* Device Inforation */
+	pr_info("Device Id: 0x%08x, Device Ver: 0x%04x\n",
+		pic32_get_device_id(),
+		pic32_get_device_version());
+}