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authorAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
committerAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
commitb4b6116a13633898cf868f2f103c96a90c4c20f8 (patch)
tree93d1b7e2cfcdf473d8d4ff3ad141fa864f8491f6 /arch/arm/mach-nomadik/cpu-8815.c
parentedd4be777c953e5faafc80d091d3084b4343f5d3 (diff)
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fedora kernel: d9aad82f3319f3cfd1aebc01234254ef0c37ad84v3.3.2-1
Signed-off-by: Anton Arapov <anton@redhat.com>
Diffstat (limited to 'arch/arm/mach-nomadik/cpu-8815.c')
-rw-r--r--arch/arm/mach-nomadik/cpu-8815.c178
1 files changed, 178 insertions, 0 deletions
diff --git a/arch/arm/mach-nomadik/cpu-8815.c b/arch/arm/mach-nomadik/cpu-8815.c
new file mode 100644
index 00000000000..65df7b4fdd3
--- /dev/null
+++ b/arch/arm/mach-nomadik/cpu-8815.c
@@ -0,0 +1,178 @@
+/*
+ * Copyright STMicroelectronics, 2007.
+ *
+ * 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/types.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/amba/bus.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <plat/gpio-nomadik.h>
+#include <mach/hardware.h>
+#include <mach/irqs.h>
+#include <asm/mach/map.h>
+#include <asm/hardware/vic.h>
+
+#include <asm/cacheflush.h>
+#include <asm/hardware/cache-l2x0.h>
+
+#include "clock.h"
+#include "cpu-8815.h"
+
+#define __MEM_4K_RESOURCE(x) \
+ .res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}
+
+/* The 8815 has 4 GPIO blocks, let's register them immediately */
+
+#define GPIO_RESOURCE(block) \
+ { \
+ .start = NOMADIK_GPIO##block##_BASE, \
+ .end = NOMADIK_GPIO##block##_BASE + SZ_4K - 1, \
+ .flags = IORESOURCE_MEM, \
+ }, \
+ { \
+ .start = IRQ_GPIO##block, \
+ .end = IRQ_GPIO##block, \
+ .flags = IORESOURCE_IRQ, \
+ }
+
+#define GPIO_DEVICE(block) \
+ { \
+ .name = "gpio", \
+ .id = block, \
+ .num_resources = 2, \
+ .resource = &cpu8815_gpio_resources[block * 2], \
+ .dev = { \
+ .platform_data = &cpu8815_gpio[block], \
+ }, \
+ }
+
+static struct nmk_gpio_platform_data cpu8815_gpio[] = {
+ {
+ .name = "GPIO-0-31",
+ .first_gpio = 0,
+ .first_irq = NOMADIK_GPIO_TO_IRQ(0),
+ }, {
+ .name = "GPIO-32-63",
+ .first_gpio = 32,
+ .first_irq = NOMADIK_GPIO_TO_IRQ(32),
+ }, {
+ .name = "GPIO-64-95",
+ .first_gpio = 64,
+ .first_irq = NOMADIK_GPIO_TO_IRQ(64),
+ }, {
+ .name = "GPIO-96-127", /* 124..127 not routed to pin */
+ .first_gpio = 96,
+ .first_irq = NOMADIK_GPIO_TO_IRQ(96),
+ }
+};
+
+static struct resource cpu8815_gpio_resources[] = {
+ GPIO_RESOURCE(0),
+ GPIO_RESOURCE(1),
+ GPIO_RESOURCE(2),
+ GPIO_RESOURCE(3),
+};
+
+static struct platform_device cpu8815_platform_gpio[] = {
+ GPIO_DEVICE(0),
+ GPIO_DEVICE(1),
+ GPIO_DEVICE(2),
+ GPIO_DEVICE(3),
+};
+
+static struct amba_device cpu8815_amba_rng = {
+ .dev = {
+ .init_name = "rng",
+ },
+ __MEM_4K_RESOURCE(NOMADIK_RNG_BASE),
+};
+
+static struct platform_device *platform_devs[] __initdata = {
+ cpu8815_platform_gpio + 0,
+ cpu8815_platform_gpio + 1,
+ cpu8815_platform_gpio + 2,
+ cpu8815_platform_gpio + 3,
+};
+
+static struct amba_device *amba_devs[] __initdata = {
+ &cpu8815_amba_rng
+};
+
+static int __init cpu8815_init(void)
+{
+ int i;
+
+ platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
+ for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
+ amba_device_register(amba_devs[i], &iomem_resource);
+ return 0;
+}
+arch_initcall(cpu8815_init);
+
+/* All SoC devices live in the same area (see hardware.h) */
+static struct map_desc nomadik_io_desc[] __initdata = {
+ {
+ .virtual = NOMADIK_IO_VIRTUAL,
+ .pfn = __phys_to_pfn(NOMADIK_IO_PHYSICAL),
+ .length = NOMADIK_IO_SIZE,
+ .type = MT_DEVICE,
+ }
+ /* static ram and secured ram may be added later */
+};
+
+void __init cpu8815_map_io(void)
+{
+ iotable_init(nomadik_io_desc, ARRAY_SIZE(nomadik_io_desc));
+}
+
+void __init cpu8815_init_irq(void)
+{
+ /* This modified VIC cell has two register blocks, at 0 and 0x20 */
+ vic_init(io_p2v(NOMADIK_IC_BASE + 0x00), IRQ_VIC_START + 0, ~0, 0);
+ vic_init(io_p2v(NOMADIK_IC_BASE + 0x20), IRQ_VIC_START + 32, ~0, 0);
+
+ /*
+ * Init clocks here so that they are available for system timer
+ * initialization.
+ */
+ clk_init();
+}
+
+/*
+ * This function is called from the board init ("init_machine").
+ */
+ void __init cpu8815_platform_init(void)
+{
+#ifdef CONFIG_CACHE_L2X0
+ /* At full speed latency must be >=2, so 0x249 in low bits */
+ l2x0_init(io_p2v(NOMADIK_L2CC_BASE), 0x00730249, 0xfe000fff);
+#endif
+ return;
+}
+
+void cpu8815_restart(char mode, const char *cmd)
+{
+ void __iomem *src_rstsr = io_p2v(NOMADIK_SRC_BASE + 0x18);
+
+ /* FIXME: use egpio when implemented */
+
+ /* Write anything to Reset status register */
+ writel(1, src_rstsr);
+}