* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License.
*/
-#include <linux/types.h>
#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/platform_device.h>
-#include <linux/dma-mapping.h>
-#include <linux/string.h>
-#include <linux/device.h>
-#include <linux/amba/bus.h>
-#include <linux/amba/kmi.h>
#include <linux/amba/mmci.h>
#include <linux/io.h>
#include <linux/irqchip.h>
-#include <linux/gfp.h>
#include <linux/of_irq.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/sched_clock.h>
+#include <linux/regmap.h>
+#include <linux/mfd/syscon.h>
-#include <asm/setup.h>
-#include <asm/mach-types.h>
#include <asm/mach/arch.h>
-#include <asm/mach/irq.h>
#include <asm/mach/map.h>
-#include <asm/mach/time.h>
#include "hardware.h"
#include "cm.h"
#include "common.h"
+/* Base address to the core module header */
+static struct regmap *cm_map;
/* Base address to the CP controller */
static void __iomem *intcp_con_base;
+#define CM_COUNTER_OFFSET 0x28
+
/*
* Logical Physical
- * f1000000 10000000 Core module registers
- * f1300000 13000000 Counter/Timer
* f1400000 14000000 Interrupt controller
* f1600000 16000000 UART 0
- * f1700000 17000000 UART 1
- * f1a00000 1a000000 Debug LEDs
- * fc900000 c9000000 GPIO
* fca00000 ca000000 SIC
*/
static struct map_desc intcp_io_desc[] __initdata __maybe_unused = {
{
- .virtual = IO_ADDRESS(INTEGRATOR_HDR_BASE),
- .pfn = __phys_to_pfn(INTEGRATOR_HDR_BASE),
- .length = SZ_4K,
- .type = MT_DEVICE
- }, {
- .virtual = IO_ADDRESS(INTEGRATOR_CT_BASE),
- .pfn = __phys_to_pfn(INTEGRATOR_CT_BASE),
- .length = SZ_4K,
- .type = MT_DEVICE
- }, {
.virtual = IO_ADDRESS(INTEGRATOR_IC_BASE),
.pfn = __phys_to_pfn(INTEGRATOR_IC_BASE),
.length = SZ_4K,
.pfn = __phys_to_pfn(INTEGRATOR_UART0_BASE),
.length = SZ_4K,
.type = MT_DEVICE
- }, {
- .virtual = IO_ADDRESS(INTEGRATOR_DBG_BASE),
- .pfn = __phys_to_pfn(INTEGRATOR_DBG_BASE),
- .length = SZ_4K,
- .type = MT_DEVICE
- }, {
- .virtual = IO_ADDRESS(INTEGRATOR_CP_GPIO_BASE),
- .pfn = __phys_to_pfn(INTEGRATOR_CP_GPIO_BASE),
- .length = SZ_4K,
- .type = MT_DEVICE
}, {
.virtual = IO_ADDRESS(INTEGRATOR_CP_SIC_BASE),
.pfn = __phys_to_pfn(INTEGRATOR_CP_SIC_BASE),
.gpio_cd = -1,
};
-#define REFCOUNTER (__io_address(INTEGRATOR_HDR_BASE) + 0x28)
-
static u64 notrace intcp_read_sched_clock(void)
{
- return readl(REFCOUNTER);
+ unsigned int val;
+
+ /* MMIO so discard return code */
+ regmap_read(cm_map, CM_COUNTER_OFFSET, &val);
+ return val;
}
static void __init intcp_init_early(void)
{
+ cm_map = syscon_regmap_lookup_by_compatible("arm,core-module-integrator");
+ if (IS_ERR(cm_map))
+ return;
sched_clock_register(intcp_read_sched_clock, 32, 24000000);
}