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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/arm/mach-mmp/pxa168.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/arm/mach-mmp/pxa168.c')
-rw-r--r--kernel/arch/arm/mach-mmp/pxa168.c178
1 files changed, 178 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-mmp/pxa168.c b/kernel/arch/arm/mach-mmp/pxa168.c
new file mode 100644
index 000000000..144e99762
--- /dev/null
+++ b/kernel/arch/arm/mach-mmp/pxa168.c
@@ -0,0 +1,178 @@
+/*
+ * linux/arch/arm/mach-mmp/pxa168.c
+ *
+ * Code specific to PXA168
+ *
+ * This program 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/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <linux/platform_data/mv_usb.h>
+
+#include <asm/mach/time.h>
+#include <asm/system_misc.h>
+#include <mach/cputype.h>
+#include <mach/addr-map.h>
+#include <mach/regs-apbc.h>
+#include <mach/regs-apmu.h>
+#include <mach/irqs.h>
+#include <mach/dma.h>
+#include <mach/devices.h>
+#include <mach/mfp.h>
+#include <linux/dma-mapping.h>
+#include <mach/pxa168.h>
+#include <mach/regs-usb.h>
+
+#include "common.h"
+#include "clock.h"
+
+#define MFPR_VIRT_BASE (APB_VIRT_BASE + 0x1e000)
+
+static struct mfp_addr_map pxa168_mfp_addr_map[] __initdata =
+{
+ MFP_ADDR_X(GPIO0, GPIO36, 0x04c),
+ MFP_ADDR_X(GPIO37, GPIO55, 0x000),
+ MFP_ADDR_X(GPIO56, GPIO123, 0x0e0),
+ MFP_ADDR_X(GPIO124, GPIO127, 0x0f4),
+
+ MFP_ADDR_END,
+};
+
+void __init pxa168_init_irq(void)
+{
+ icu_init_irq();
+}
+
+static int __init pxa168_init(void)
+{
+ if (cpu_is_pxa168()) {
+ mfp_init_base(MFPR_VIRT_BASE);
+ mfp_init_addr(pxa168_mfp_addr_map);
+ pxa_init_dma(IRQ_PXA168_DMA_INT0, 32);
+ pxa168_clk_init();
+ }
+
+ return 0;
+}
+postcore_initcall(pxa168_init);
+
+/* system timer - clock enabled, 3.25MHz */
+#define TIMER_CLK_RST (APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(3))
+#define APBC_TIMERS APBC_REG(0x34)
+
+void __init pxa168_timer_init(void)
+{
+ /* this is early, we have to initialize the CCU registers by
+ * ourselves instead of using clk_* API. Clock rate is defined
+ * by APBC_TIMERS_CLK_RST (3.25MHz) and enabled free-running
+ */
+ __raw_writel(APBC_APBCLK | APBC_RST, APBC_TIMERS);
+
+ /* 3.25MHz, bus/functional clock enabled, release reset */
+ __raw_writel(TIMER_CLK_RST, APBC_TIMERS);
+
+ timer_init(IRQ_PXA168_TIMER1);
+}
+
+void pxa168_clear_keypad_wakeup(void)
+{
+ uint32_t val;
+ uint32_t mask = APMU_PXA168_KP_WAKE_CLR;
+
+ /* wake event clear is needed in order to clear keypad interrupt */
+ val = __raw_readl(APMU_WAKE_CLR);
+ __raw_writel(val | mask, APMU_WAKE_CLR);
+}
+
+/* on-chip devices */
+PXA168_DEVICE(uart1, "pxa2xx-uart", 0, UART1, 0xd4017000, 0x30, 21, 22);
+PXA168_DEVICE(uart2, "pxa2xx-uart", 1, UART2, 0xd4018000, 0x30, 23, 24);
+PXA168_DEVICE(uart3, "pxa2xx-uart", 2, UART3, 0xd4026000, 0x30, 23, 24);
+PXA168_DEVICE(twsi0, "pxa2xx-i2c", 0, TWSI0, 0xd4011000, 0x28);
+PXA168_DEVICE(twsi1, "pxa2xx-i2c", 1, TWSI1, 0xd4025000, 0x28);
+PXA168_DEVICE(pwm1, "pxa168-pwm", 0, NONE, 0xd401a000, 0x10);
+PXA168_DEVICE(pwm2, "pxa168-pwm", 1, NONE, 0xd401a400, 0x10);
+PXA168_DEVICE(pwm3, "pxa168-pwm", 2, NONE, 0xd401a800, 0x10);
+PXA168_DEVICE(pwm4, "pxa168-pwm", 3, NONE, 0xd401ac00, 0x10);
+PXA168_DEVICE(nand, "pxa3xx-nand", -1, NAND, 0xd4283000, 0x80, 97, 99);
+PXA168_DEVICE(ssp1, "pxa168-ssp", 0, SSP1, 0xd401b000, 0x40, 52, 53);
+PXA168_DEVICE(ssp2, "pxa168-ssp", 1, SSP2, 0xd401c000, 0x40, 54, 55);
+PXA168_DEVICE(ssp3, "pxa168-ssp", 2, SSP3, 0xd401f000, 0x40, 56, 57);
+PXA168_DEVICE(ssp4, "pxa168-ssp", 3, SSP4, 0xd4020000, 0x40, 58, 59);
+PXA168_DEVICE(ssp5, "pxa168-ssp", 4, SSP5, 0xd4021000, 0x40, 60, 61);
+PXA168_DEVICE(fb, "pxa168-fb", -1, LCD, 0xd420b000, 0x1c8);
+PXA168_DEVICE(keypad, "pxa27x-keypad", -1, KEYPAD, 0xd4012000, 0x4c);
+PXA168_DEVICE(eth, "pxa168-eth", -1, MFU, 0xc0800000, 0x0fff);
+
+struct resource pxa168_resource_gpio[] = {
+ {
+ .start = 0xd4019000,
+ .end = 0xd4019fff,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .start = IRQ_PXA168_GPIOX,
+ .end = IRQ_PXA168_GPIOX,
+ .name = "gpio_mux",
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+struct platform_device pxa168_device_gpio = {
+ .name = "mmp-gpio",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(pxa168_resource_gpio),
+ .resource = pxa168_resource_gpio,
+};
+
+struct resource pxa168_usb_host_resources[] = {
+ /* USB Host conroller register base */
+ [0] = {
+ .start = PXA168_U2H_REGBASE + U2x_CAPREGS_OFFSET,
+ .end = PXA168_U2H_REGBASE + USB_REG_RANGE,
+ .flags = IORESOURCE_MEM,
+ .name = "capregs",
+ },
+ /* USB PHY register base */
+ [1] = {
+ .start = PXA168_U2H_PHYBASE,
+ .end = PXA168_U2H_PHYBASE + USB_PHY_RANGE,
+ .flags = IORESOURCE_MEM,
+ .name = "phyregs",
+ },
+ [2] = {
+ .start = IRQ_PXA168_USB2,
+ .end = IRQ_PXA168_USB2,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static u64 pxa168_usb_host_dmamask = DMA_BIT_MASK(32);
+struct platform_device pxa168_device_usb_host = {
+ .name = "pxa-sph",
+ .id = -1,
+ .dev = {
+ .dma_mask = &pxa168_usb_host_dmamask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+
+ .num_resources = ARRAY_SIZE(pxa168_usb_host_resources),
+ .resource = pxa168_usb_host_resources,
+};
+
+int __init pxa168_add_usb_host(struct mv_usb_platform_data *pdata)
+{
+ pxa168_device_usb_host.dev.platform_data = pdata;
+ return platform_device_register(&pxa168_device_usb_host);
+}
+
+void pxa168_restart(enum reboot_mode mode, const char *cmd)
+{
+ soft_restart(0xffff0000);
+}