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-rw-r--r--arch/arm/mach-vt8500/Kconfig29
-rw-r--r--arch/arm/mach-vt8500/Makefile1
-rw-r--r--arch/arm/mach-vt8500/Makefile.boot3
-rw-r--r--arch/arm/mach-vt8500/vt8500.c180
4 files changed, 213 insertions, 0 deletions
diff --git a/arch/arm/mach-vt8500/Kconfig b/arch/arm/mach-vt8500/Kconfig
new file mode 100644
index 000000000..aaaa24fe4
--- /dev/null
+++ b/arch/arm/mach-vt8500/Kconfig
@@ -0,0 +1,29 @@
+config ARCH_VT8500
+ bool
+ select ARCH_REQUIRE_GPIOLIB
+ select CLKDEV_LOOKUP
+ select VT8500_TIMER
+ select PINCTRL
+ help
+ Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
+
+config ARCH_WM8505
+ bool "VIA/Wondermedia 85xx and WM8650"
+ depends on ARCH_MULTI_V5
+ select ARCH_VT8500
+ select CPU_ARM926T
+ help
+
+config ARCH_WM8750
+ bool "WonderMedia WM8750"
+ depends on ARCH_MULTI_V6
+ select ARCH_VT8500
+ help
+ Support for WonderMedia WM8750 System-on-Chip.
+
+config ARCH_WM8850
+ bool "WonderMedia WM8850"
+ depends on ARCH_MULTI_V7
+ select ARCH_VT8500
+ help
+ Support for WonderMedia WM8850 System-on-Chip.
diff --git a/arch/arm/mach-vt8500/Makefile b/arch/arm/mach-vt8500/Makefile
new file mode 100644
index 000000000..4c8a84637
--- /dev/null
+++ b/arch/arm/mach-vt8500/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_ARCH_VT8500) += vt8500.o
diff --git a/arch/arm/mach-vt8500/Makefile.boot b/arch/arm/mach-vt8500/Makefile.boot
new file mode 100644
index 000000000..b79c41cdf
--- /dev/null
+++ b/arch/arm/mach-vt8500/Makefile.boot
@@ -0,0 +1,3 @@
+ zreladdr-y += 0x00008000
+params_phys-y := 0x00000100
+initrd_phys-y := 0x01000000
diff --git a/arch/arm/mach-vt8500/vt8500.c b/arch/arm/mach-vt8500/vt8500.c
new file mode 100644
index 000000000..3bc0dc9a4
--- /dev/null
+++ b/arch/arm/mach-vt8500/vt8500.c
@@ -0,0 +1,180 @@
+/*
+ * arch/arm/mach-vt8500/vt8500.c
+ *
+ * Copyright (C) 2012 Tony Prisk <linux@prisktech.co.nz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/io.h>
+#include <linux/pm.h>
+#include <linux/reboot.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/time.h>
+#include <asm/mach/map.h>
+
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+
+#define LEGACY_GPIO_BASE 0xD8110000
+#define LEGACY_PMC_BASE 0xD8130000
+
+/* Registers in GPIO Controller */
+#define VT8500_GPIO_MUX_REG 0x200
+
+/* Registers in Power Management Controller */
+#define VT8500_HCR_REG 0x12
+#define VT8500_PMSR_REG 0x60
+
+static void __iomem *pmc_base;
+
+static void vt8500_restart(enum reboot_mode mode, const char *cmd)
+{
+ if (pmc_base)
+ writel(1, pmc_base + VT8500_PMSR_REG);
+}
+
+static struct map_desc vt8500_io_desc[] __initdata = {
+ /* SoC MMIO registers */
+ [0] = {
+ .virtual = 0xf8000000,
+ .pfn = __phys_to_pfn(0xd8000000),
+ .length = 0x00390000, /* max of all chip variants */
+ .type = MT_DEVICE
+ },
+};
+
+static void __init vt8500_map_io(void)
+{
+ iotable_init(vt8500_io_desc, ARRAY_SIZE(vt8500_io_desc));
+}
+
+static void vt8500_power_off(void)
+{
+ local_irq_disable();
+ writew(5, pmc_base + VT8500_HCR_REG);
+ asm("mcr p15, 0, %0, c7, c0, 4" : : "r" (0));
+}
+
+static void __init vt8500_init(void)
+{
+ struct device_node *np;
+#if defined(CONFIG_FB_VT8500) || defined(CONFIG_FB_WM8505)
+ struct device_node *fb;
+ void __iomem *gpio_base;
+#endif
+
+#ifdef CONFIG_FB_VT8500
+ fb = of_find_compatible_node(NULL, NULL, "via,vt8500-fb");
+ if (fb) {
+ np = of_find_compatible_node(NULL, NULL, "via,vt8500-gpio");
+ if (np) {
+ gpio_base = of_iomap(np, 0);
+
+ if (!gpio_base)
+ pr_err("%s: of_iomap(gpio_mux) failed\n",
+ __func__);
+
+ of_node_put(np);
+ } else {
+ gpio_base = ioremap(LEGACY_GPIO_BASE, 0x1000);
+ if (!gpio_base)
+ pr_err("%s: ioremap(legacy_gpio_mux) failed\n",
+ __func__);
+ }
+ if (gpio_base) {
+ writel(readl(gpio_base + VT8500_GPIO_MUX_REG) | 1,
+ gpio_base + VT8500_GPIO_MUX_REG);
+ iounmap(gpio_base);
+ } else
+ pr_err("%s: Could not remap GPIO mux\n", __func__);
+
+ of_node_put(fb);
+ }
+#endif
+
+#ifdef CONFIG_FB_WM8505
+ fb = of_find_compatible_node(NULL, NULL, "wm,wm8505-fb");
+ if (fb) {
+ np = of_find_compatible_node(NULL, NULL, "wm,wm8505-gpio");
+ if (!np)
+ np = of_find_compatible_node(NULL, NULL,
+ "wm,wm8650-gpio");
+ if (np) {
+ gpio_base = of_iomap(np, 0);
+
+ if (!gpio_base)
+ pr_err("%s: of_iomap(gpio_mux) failed\n",
+ __func__);
+
+ of_node_put(np);
+ } else {
+ gpio_base = ioremap(LEGACY_GPIO_BASE, 0x1000);
+ if (!gpio_base)
+ pr_err("%s: ioremap(legacy_gpio_mux) failed\n",
+ __func__);
+ }
+ if (gpio_base) {
+ writel(readl(gpio_base + VT8500_GPIO_MUX_REG) |
+ 0x80000000, gpio_base + VT8500_GPIO_MUX_REG);
+ iounmap(gpio_base);
+ } else
+ pr_err("%s: Could not remap GPIO mux\n", __func__);
+
+ of_node_put(fb);
+ }
+#endif
+
+ np = of_find_compatible_node(NULL, NULL, "via,vt8500-pmc");
+ if (np) {
+ pmc_base = of_iomap(np, 0);
+
+ if (!pmc_base)
+ pr_err("%s:of_iomap(pmc) failed\n", __func__);
+
+ of_node_put(np);
+ } else {
+ pmc_base = ioremap(LEGACY_PMC_BASE, 0x1000);
+ if (!pmc_base)
+ pr_err("%s:ioremap(power_off) failed\n", __func__);
+ }
+ if (pmc_base)
+ pm_power_off = &vt8500_power_off;
+ else
+ pr_err("%s: PMC Hibernation register could not be remapped, not enabling power off!\n", __func__);
+
+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+}
+
+static const char * const vt8500_dt_compat[] = {
+ "via,vt8500",
+ "wm,wm8650",
+ "wm,wm8505",
+ "wm,wm8750",
+ "wm,wm8850",
+ NULL
+};
+
+DT_MACHINE_START(WMT_DT, "VIA/Wondermedia SoC (Device Tree Support)")
+ .dt_compat = vt8500_dt_compat,
+ .map_io = vt8500_map_io,
+ .init_machine = vt8500_init,
+ .restart = vt8500_restart,
+MACHINE_END
+
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