From 2b12b5c4ff9e0f1c5f4e5d5bde57b919fe522df2 Mon Sep 17 00:00:00 2001 From: Changhwan Youn Date: Mon, 26 Jul 2010 21:08:52 +0900 Subject: ARM: S5PV310: Add new CPU initialization support This patch adds Samsung S5PV310/S5PC210 CPU support. The S5PV310/S5PC210 integrates a ARM Cortex A9 multi-core. Signed-off-by: Changhwan Youn Signed-off-by: Jongpill Lee Signed-off-by: Jiseong Oh [kgene.kim@samsung.com: fix build errors] Signed-off-by: Kukjin Kim --- arch/arm/mach-s5pv310/include/mach/debug-macro.S | 36 ++++++ arch/arm/mach-s5pv310/include/mach/entry-macro.S | 84 ++++++++++++++ arch/arm/mach-s5pv310/include/mach/gpio.h | 135 +++++++++++++++++++++++ arch/arm/mach-s5pv310/include/mach/hardware.h | 18 +++ arch/arm/mach-s5pv310/include/mach/io.h | 26 +++++ arch/arm/mach-s5pv310/include/mach/map.h | 69 ++++++++++++ arch/arm/mach-s5pv310/include/mach/memory.h | 22 ++++ arch/arm/mach-s5pv310/include/mach/smp.h | 29 +++++ arch/arm/mach-s5pv310/include/mach/system.h | 22 ++++ arch/arm/mach-s5pv310/include/mach/timex.h | 29 +++++ arch/arm/mach-s5pv310/include/mach/uncompress.h | 30 +++++ arch/arm/mach-s5pv310/include/mach/vmalloc.h | 22 ++++ 12 files changed, 522 insertions(+) create mode 100644 arch/arm/mach-s5pv310/include/mach/debug-macro.S create mode 100644 arch/arm/mach-s5pv310/include/mach/entry-macro.S create mode 100644 arch/arm/mach-s5pv310/include/mach/gpio.h create mode 100644 arch/arm/mach-s5pv310/include/mach/hardware.h create mode 100644 arch/arm/mach-s5pv310/include/mach/io.h create mode 100644 arch/arm/mach-s5pv310/include/mach/map.h create mode 100644 arch/arm/mach-s5pv310/include/mach/memory.h create mode 100644 arch/arm/mach-s5pv310/include/mach/smp.h create mode 100644 arch/arm/mach-s5pv310/include/mach/system.h create mode 100644 arch/arm/mach-s5pv310/include/mach/timex.h create mode 100644 arch/arm/mach-s5pv310/include/mach/uncompress.h create mode 100644 arch/arm/mach-s5pv310/include/mach/vmalloc.h (limited to 'arch/arm/mach-s5pv310/include/mach') diff --git a/arch/arm/mach-s5pv310/include/mach/debug-macro.S b/arch/arm/mach-s5pv310/include/mach/debug-macro.S new file mode 100644 index 000000000000..6fb3893486be --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/debug-macro.S @@ -0,0 +1,36 @@ +/* linux/arch/arm/mach-s5pv310/include/mach/debug-macro.S + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * Based on arch/arm/mach-s3c6400/include/mach/debug-macro.S + * + * 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. +*/ + +/* pull in the relevant register and map files. */ + +#include + + /* note, for the boot process to work we have to keep the UART + * virtual address aligned to an 1MiB boundary for the L1 + * mapping the head code makes. We keep the UART virtual address + * aligned and add in the offset when we load the value here. + */ + + .macro addruart, rx, tmp + mrc p15, 0, \rx, c1, c0 + tst \rx, #1 + ldreq \rx, = S3C_PA_UART + ldrne \rx, = S3C_VA_UART +#if CONFIG_DEBUG_S3C_UART != 0 + add \rx, \rx, #(0x10000 * CONFIG_DEBUG_S3C_UART) +#endif + .endm + +#define fifo_full fifo_full_s5pv210 +#define fifo_level fifo_level_s5pv210 + +#include diff --git a/arch/arm/mach-s5pv310/include/mach/entry-macro.S b/arch/arm/mach-s5pv310/include/mach/entry-macro.S new file mode 100644 index 000000000000..e600e1d522df --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/entry-macro.S @@ -0,0 +1,84 @@ +/* arch/arm/mach-s5pv310/include/mach/entry-macro.S + * + * Cloned from arch/arm/mach-realview/include/mach/entry-macro.S + * + * Low-level IRQ helper macros for S5PV310 platforms + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. +*/ + +#include +#include + + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + ldr \base, =gic_cpu_base_addr + ldr \base, [\base] + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + + /* + * The interrupt numbering scheme is defined in the + * interrupt controller spec. To wit: + * + * Interrupts 0-15 are IPI + * 16-28 are reserved + * 29-31 are local. We allow 30 to be used for the watchdog. + * 32-1020 are global + * 1021-1022 are reserved + * 1023 is "spurious" (no interrupt) + * + * For now, we ignore all local interrupts so only return an interrupt if it's + * between 30 and 1020. The test_for_ipi routine below will pick up on IPIs. + * + * A simple read from the controller will tell us the number of the highest + * priority enabled interrupt. We then just need to check whether it is in the + * valid range for an IRQ (30-1020 inclusive). + */ + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + + ldr \irqstat, [\base, #GIC_CPU_INTACK] /* bits 12-10 = src CPU, 9-0 = int # */ + + ldr \tmp, =1021 + + bic \irqnr, \irqstat, #0x1c00 + + cmp \irqnr, #29 + cmpcc \irqnr, \irqnr + cmpne \irqnr, \tmp + cmpcs \irqnr, \irqnr + addne \irqnr, \irqnr, #32 + + .endm + + /* We assume that irqstat (the raw value of the IRQ acknowledge + * register) is preserved from the macro above. + * If there is an IPI, we immediately signal end of interrupt on the + * controller, since this requires the original irqstat value which + * we won't easily be able to recreate later. + */ + + .macro test_for_ipi, irqnr, irqstat, base, tmp + bic \irqnr, \irqstat, #0x1c00 + cmp \irqnr, #16 + strcc \irqstat, [\base, #GIC_CPU_EOI] + cmpcs \irqnr, \irqnr + .endm + + /* As above, this assumes that irqstat and base are preserved.. */ + + .macro test_for_ltirq, irqnr, irqstat, base, tmp + bic \irqnr, \irqstat, #0x1c00 + mov \tmp, #0 + cmp \irqnr, #29 + moveq \tmp, #1 + streq \irqstat, [\base, #GIC_CPU_EOI] + cmp \tmp, #0 + .endm diff --git a/arch/arm/mach-s5pv310/include/mach/gpio.h b/arch/arm/mach-s5pv310/include/mach/gpio.h new file mode 100644 index 000000000000..20cb80c23466 --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/gpio.h @@ -0,0 +1,135 @@ +/* linux/arch/arm/mach-s5pv310/include/mach/gpio.h + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5PV310 - GPIO lib support + * + * 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. +*/ + +#ifndef __ASM_ARCH_GPIO_H +#define __ASM_ARCH_GPIO_H __FILE__ + +#define gpio_get_value __gpio_get_value +#define gpio_set_value __gpio_set_value +#define gpio_cansleep __gpio_cansleep +#define gpio_to_irq __gpio_to_irq + +/* Practically, GPIO banks upto GPZ are the configurable gpio banks */ + +/* GPIO bank sizes */ +#define S5PV310_GPIO_A0_NR (8) +#define S5PV310_GPIO_A1_NR (6) +#define S5PV310_GPIO_B_NR (8) +#define S5PV310_GPIO_C0_NR (5) +#define S5PV310_GPIO_C1_NR (5) +#define S5PV310_GPIO_D0_NR (4) +#define S5PV310_GPIO_D1_NR (4) +#define S5PV310_GPIO_E0_NR (5) +#define S5PV310_GPIO_E1_NR (8) +#define S5PV310_GPIO_E2_NR (6) +#define S5PV310_GPIO_E3_NR (8) +#define S5PV310_GPIO_E4_NR (8) +#define S5PV310_GPIO_F0_NR (8) +#define S5PV310_GPIO_F1_NR (8) +#define S5PV310_GPIO_F2_NR (8) +#define S5PV310_GPIO_F3_NR (6) +#define S5PV310_GPIO_J0_NR (8) +#define S5PV310_GPIO_J1_NR (5) +#define S5PV310_GPIO_K0_NR (7) +#define S5PV310_GPIO_K1_NR (7) +#define S5PV310_GPIO_K2_NR (7) +#define S5PV310_GPIO_K3_NR (7) +#define S5PV310_GPIO_L0_NR (8) +#define S5PV310_GPIO_L1_NR (3) +#define S5PV310_GPIO_L2_NR (8) +#define S5PV310_GPIO_X0_NR (8) +#define S5PV310_GPIO_X1_NR (8) +#define S5PV310_GPIO_X2_NR (8) +#define S5PV310_GPIO_X3_NR (8) +#define S5PV310_GPIO_Z_NR (7) + +/* GPIO bank numbers */ + +#define S5PV310_GPIO_NEXT(__gpio) \ + ((__gpio##_START) + (__gpio##_NR) + CONFIG_S3C_GPIO_SPACE + 1) + +enum s5p_gpio_number { + S5PV310_GPIO_A0_START = 0, + S5PV310_GPIO_A1_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_A0), + S5PV310_GPIO_B_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_A1), + S5PV310_GPIO_C0_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_B), + S5PV310_GPIO_C1_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_C0), + S5PV310_GPIO_D0_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_C1), + S5PV310_GPIO_D1_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_D0), + S5PV310_GPIO_E0_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_D1), + S5PV310_GPIO_E1_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_E0), + S5PV310_GPIO_E2_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_E1), + S5PV310_GPIO_E3_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_E2), + S5PV310_GPIO_E4_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_E3), + S5PV310_GPIO_F0_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_E4), + S5PV310_GPIO_F1_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_F0), + S5PV310_GPIO_F2_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_F1), + S5PV310_GPIO_F3_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_F2), + S5PV310_GPIO_J0_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_F3), + S5PV310_GPIO_J1_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_J0), + S5PV310_GPIO_K0_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_J1), + S5PV310_GPIO_K1_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_K0), + S5PV310_GPIO_K2_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_K1), + S5PV310_GPIO_K3_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_K2), + S5PV310_GPIO_L0_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_K3), + S5PV310_GPIO_L1_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_L0), + S5PV310_GPIO_L2_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_L1), + S5PV310_GPIO_X0_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_L2), + S5PV310_GPIO_X1_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_X0), + S5PV310_GPIO_X2_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_X1), + S5PV310_GPIO_X3_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_X2), + S5PV310_GPIO_Z_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_X3), +}; + +/* S5PV310 GPIO number definitions */ +#define S5PV310_GPA0(_nr) (S5PV310_GPIO_A0_START + (_nr)) +#define S5PV310_GPA1(_nr) (S5PV310_GPIO_A1_START + (_nr)) +#define S5PV310_GPB(_nr) (S5PV310_GPIO_B_START + (_nr)) +#define S5PV310_GPC0(_nr) (S5PV310_GPIO_C0_START + (_nr)) +#define S5PV310_GPC1(_nr) (S5PV310_GPIO_C1_START + (_nr)) +#define S5PV310_GPD0(_nr) (S5PV310_GPIO_D0_START + (_nr)) +#define S5PV310_GPD1(_nr) (S5PV310_GPIO_D1_START + (_nr)) +#define S5PV310_GPE0(_nr) (S5PV310_GPIO_E0_START + (_nr)) +#define S5PV310_GPE1(_nr) (S5PV310_GPIO_E1_START + (_nr)) +#define S5PV310_GPE2(_nr) (S5PV310_GPIO_E2_START + (_nr)) +#define S5PV310_GPE3(_nr) (S5PV310_GPIO_E3_START + (_nr)) +#define S5PV310_GPE4(_nr) (S5PV310_GPIO_E4_START + (_nr)) +#define S5PV310_GPF0(_nr) (S5PV310_GPIO_F0_START + (_nr)) +#define S5PV310_GPF1(_nr) (S5PV310_GPIO_F1_START + (_nr)) +#define S5PV310_GPF2(_nr) (S5PV310_GPIO_F2_START + (_nr)) +#define S5PV310_GPF3(_nr) (S5PV310_GPIO_F3_START + (_nr)) +#define S5PV310_GPJ0(_nr) (S5PV310_GPIO_J0_START + (_nr)) +#define S5PV310_GPJ1(_nr) (S5PV310_GPIO_J1_START + (_nr)) +#define S5PV310_GPK0(_nr) (S5PV310_GPIO_K0_START + (_nr)) +#define S5PV310_GPK1(_nr) (S5PV310_GPIO_K1_START + (_nr)) +#define S5PV310_GPK2(_nr) (S5PV310_GPIO_K2_START + (_nr)) +#define S5PV310_GPK3(_nr) (S5PV310_GPIO_K3_START + (_nr)) +#define S5PV310_GPL0(_nr) (S5PV310_GPIO_L0_START + (_nr)) +#define S5PV310_GPL1(_nr) (S5PV310_GPIO_L1_START + (_nr)) +#define S5PV310_GPL2(_nr) (S5PV310_GPIO_L2_START + (_nr)) +#define S5PV310_GPX0(_nr) (S5PV310_GPIO_X0_START + (_nr)) +#define S5PV310_GPX1(_nr) (S5PV310_GPIO_X1_START + (_nr)) +#define S5PV310_GPX2(_nr) (S5PV310_GPIO_X2_START + (_nr)) +#define S5PV310_GPX3(_nr) (S5PV310_GPIO_X3_START + (_nr)) +#define S5PV310_GPZ(_nr) (S5PV310_GPIO_Z_START + (_nr)) + +/* the end of the S5PV310 specific gpios */ +#define S5PV310_GPIO_END (S5PV310_GPZ(S5PV310_GPIO_Z_NR) + 1) +#define S3C_GPIO_END S5PV310_GPIO_END + +/* define the number of gpios we need to the one after the GPZ() range */ +#define ARCH_NR_GPIOS (S5PV310_GPZ(S5PV310_GPIO_Z_NR) + \ + CONFIG_SAMSUNG_GPIO_EXTRA + 1) + +#include + +#endif /* __ASM_ARCH_GPIO_H */ diff --git a/arch/arm/mach-s5pv310/include/mach/hardware.h b/arch/arm/mach-s5pv310/include/mach/hardware.h new file mode 100644 index 000000000000..28ff9881f1a6 --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/hardware.h @@ -0,0 +1,18 @@ +/* linux/arch/arm/mach-s5pv310/include/mach/hardware.h + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5PV310 - Hardware support + * + * 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. +*/ + +#ifndef __ASM_ARCH_HARDWARE_H +#define __ASM_ARCH_HARDWARE_H __FILE__ + +/* currently nothing here, placeholder */ + +#endif /* __ASM_ARCH_HARDWARE_H */ diff --git a/arch/arm/mach-s5pv310/include/mach/io.h b/arch/arm/mach-s5pv310/include/mach/io.h new file mode 100644 index 000000000000..8a7f9128391f --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/io.h @@ -0,0 +1,26 @@ +/* linux/arch/arm/mach-s5pv310/include/mach/io.h + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * Copyright 2008-2010 Ben Dooks + * + * Based on arch/arm/mach-s5p6442/include/mach/io.h + * + * Default IO routines for S5PV310 + * + * 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. +*/ + +#ifndef __ASM_ARM_ARCH_IO_H +#define __ASM_ARM_ARCH_IO_H __FILE__ + +/* No current ISA/PCI bus support. */ +#define __io(a) __typesafe_io(a) +#define __mem_pci(a) (a) + +#define IO_SPACE_LIMIT (0xFFFFFFFF) + +#endif /* __ASM_ARM_ARCH_IO_H */ diff --git a/arch/arm/mach-s5pv310/include/mach/map.h b/arch/arm/mach-s5pv310/include/mach/map.h new file mode 100644 index 000000000000..87697c9fca5b --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/map.h @@ -0,0 +1,69 @@ +/* linux/arch/arm/mach-s5pv310/include/mach/map.h + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5PV310 - Memory map definitions + * + * 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. +*/ + +#ifndef __ASM_ARCH_MAP_H +#define __ASM_ARCH_MAP_H __FILE__ + +#include + +/* + * S5PV310 UART offset is 0x10000 but the older S5P SoCs are 0x400. + * So need to define it, and here is to avoid redefinition warning. + */ +#define S3C_UART_OFFSET (0x10000) + +#include + +#define S5PV310_PA_CHIPID (0x10000000) +#define S5P_PA_CHIPID S5PV310_PA_CHIPID + +#define S5PV310_PA_SYSCON (0x10020000) +#define S5P_PA_SYSCON S5PV310_PA_SYSCON + +#define S5PV310_PA_WATCHDOG (0x10060000) + +#define S5PV310_PA_COMBINER (0x10448000) + +#define S5PV310_PA_COREPERI (0x10500000) +#define S5PV310_PA_GIC_CPU (0x10500100) +#define S5PV310_PA_TWD (0x10500600) +#define S5PV310_PA_GIC_DIST (0x10501000) +#define S5PV310_PA_L2CC (0x10502000) + +#define S5PV310_PA_GPIO (0x11000000) +#define S5P_PA_GPIO S5PV310_PA_GPIO + +#define S5PV310_PA_UART (0x13800000) + +#define S5P_PA_UART(x) (S5PV310_PA_UART + ((x) * S3C_UART_OFFSET)) +#define S5P_PA_UART0 S5P_PA_UART(0) +#define S5P_PA_UART1 S5P_PA_UART(1) +#define S5P_PA_UART2 S5P_PA_UART(2) +#define S5P_PA_UART3 S5P_PA_UART(3) +#define S5P_PA_UART4 S5P_PA_UART(4) + +#define S5P_SZ_UART SZ_256 + +#define S5PV310_PA_IIC0 (0x13860000) + +#define S5PV310_PA_TIMER (0x139D0000) +#define S5P_PA_TIMER S5PV310_PA_TIMER + +#define S5PV310_PA_SDRAM (0x40000000) +#define S5P_PA_SDRAM S5PV310_PA_SDRAM + +/* compatibiltiy defines. */ +#define S3C_PA_UART S5PV310_PA_UART +#define S3C_PA_IIC S5PV310_PA_IIC0 +#define S3C_PA_WDT S5PV310_PA_WATCHDOG + +#endif /* __ASM_ARCH_MAP_H */ diff --git a/arch/arm/mach-s5pv310/include/mach/memory.h b/arch/arm/mach-s5pv310/include/mach/memory.h new file mode 100644 index 000000000000..1dffb4823245 --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/memory.h @@ -0,0 +1,22 @@ +/* linux/arch/arm/mach-s5pv310/include/mach/memory.h + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5PV310 - Memory definitions + * + * 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. +*/ + +#ifndef __ASM_ARCH_MEMORY_H +#define __ASM_ARCH_MEMORY_H __FILE__ + +#define PHYS_OFFSET UL(0x40000000) + +/* Maximum of 256MiB in one bank */ +#define MAX_PHYSMEM_BITS 32 +#define SECTION_SIZE_BITS 28 + +#endif /* __ASM_ARCH_MEMORY_H */ diff --git a/arch/arm/mach-s5pv310/include/mach/smp.h b/arch/arm/mach-s5pv310/include/mach/smp.h new file mode 100644 index 000000000000..990f3ba88a1f --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/smp.h @@ -0,0 +1,29 @@ +/* linux/arch/arm/mach-s5pv310/include/mach/smp.h + * + * Cloned from arch/arm/mach-realview/include/mach/smp.h +*/ + +#ifndef ASM_ARCH_SMP_H +#define ASM_ARCH_SMP_H __FILE__ + +#include + +extern void __iomem *gic_cpu_base_addr; + +#define hard_smp_processor_id() \ + ({ \ + unsigned int cpunum; \ + __asm__("mrc p15, 0, %0, c0, c0, 5" \ + : "=r" (cpunum)); \ + cpunum &= 0x03; \ + }) + +/* + * We use IRQ1 as the IPI + */ +static inline void smp_cross_call(const struct cpumask *mask) +{ + gic_raise_softirq(mask, 1); +} + +#endif diff --git a/arch/arm/mach-s5pv310/include/mach/system.h b/arch/arm/mach-s5pv310/include/mach/system.h new file mode 100644 index 000000000000..d10c009cf0f1 --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/system.h @@ -0,0 +1,22 @@ +/* linux/arch/arm/mach-s5pv310/include/mach/system.h + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5PV310 - system support header + * + * 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. +*/ + +#ifndef __ASM_ARCH_SYSTEM_H +#define __ASM_ARCH_SYSTEM_H __FILE__ + +#include + +static void arch_idle(void) +{ + /* nothing here yet */ +} +#endif /* __ASM_ARCH_SYSTEM_H */ diff --git a/arch/arm/mach-s5pv310/include/mach/timex.h b/arch/arm/mach-s5pv310/include/mach/timex.h new file mode 100644 index 000000000000..bd2359b952b4 --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/timex.h @@ -0,0 +1,29 @@ +/* linux/arch/arm/mach-s5pv310/include/mach/timex.h + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * Copyright (c) 2003-2010 Simtec Electronics + * Ben Dooks + * + * Based on arch/arm/mach-s5p6442/include/mach/timex.h + * + * S5PV310 - time parameters + * + * 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. +*/ + +#ifndef __ASM_ARCH_TIMEX_H +#define __ASM_ARCH_TIMEX_H __FILE__ + +/* CLOCK_TICK_RATE needs to be evaluatable by the cpp, so making it + * a variable is useless. It seems as long as we make our timers an + * exact multiple of HZ, any value that makes a 1->1 correspondence + * for the time conversion functions to/from jiffies is acceptable. +*/ + +#define CLOCK_TICK_RATE 12000000 + +#endif /* __ASM_ARCH_TIMEX_H */ diff --git a/arch/arm/mach-s5pv310/include/mach/uncompress.h b/arch/arm/mach-s5pv310/include/mach/uncompress.h new file mode 100644 index 000000000000..59593c1e2416 --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/uncompress.h @@ -0,0 +1,30 @@ +/* linux/arch/arm/mach-s5pv310/include/mach/uncompress.h + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5PV310 - uncompress code + * + * 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. +*/ + +#ifndef __ASM_ARCH_UNCOMPRESS_H +#define __ASM_ARCH_UNCOMPRESS_H __FILE__ + +#include +#include + +static void arch_detect_cpu(void) +{ + /* we do not need to do any cpu detection here at the moment. */ + + /* + * For preventing FIFO overrun or infinite loop of UART console, + * fifo_max should be the minimum fifo size of all of the UART channels + */ + fifo_mask = S5PV210_UFSTAT_TXMASK; + fifo_max = 15 << S5PV210_UFSTAT_TXSHIFT; +} +#endif /* __ASM_ARCH_UNCOMPRESS_H */ diff --git a/arch/arm/mach-s5pv310/include/mach/vmalloc.h b/arch/arm/mach-s5pv310/include/mach/vmalloc.h new file mode 100644 index 000000000000..3f565ebb7daa --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/vmalloc.h @@ -0,0 +1,22 @@ +/* linux/arch/arm/mach-s5pv310/include/mach/vmalloc.h + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * Copyright 2010 Ben Dooks + * + * Based on arch/arm/mach-s5p6440/include/mach/vmalloc.h + * + * 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. + * + * S5PV310 vmalloc definition +*/ + +#ifndef __ASM_ARCH_VMALLOC_H +#define __ASM_ARCH_VMALLOC_H __FILE__ + +#define VMALLOC_END (0xF0000000) + +#endif /* __ASM_ARCH_VMALLOC_H */ -- cgit v1.2.3 From c8bef14051b261f86278fad84ccc23c891242d25 Mon Sep 17 00:00:00 2001 From: Changhwan Youn Date: Tue, 27 Jul 2010 17:52:39 +0900 Subject: ARM: S5PV310: Add Clock and PLL support This patch adds clock and pll support for S5PV310. Signed-off-by: Changhwan Youn Signed-off-by: Jongpill Lee Signed-off-by: Kukjin Kim --- arch/arm/mach-s5pv310/clock.c | 544 ++++++++++++++++++++++++ arch/arm/mach-s5pv310/include/mach/regs-clock.h | 62 +++ arch/arm/plat-s5p/include/plat/pll.h | 41 ++ 3 files changed, 647 insertions(+) create mode 100644 arch/arm/mach-s5pv310/clock.c create mode 100644 arch/arm/mach-s5pv310/include/mach/regs-clock.h (limited to 'arch/arm/mach-s5pv310/include/mach') diff --git a/arch/arm/mach-s5pv310/clock.c b/arch/arm/mach-s5pv310/clock.c new file mode 100644 index 000000000000..77f2b4d85e6b --- /dev/null +++ b/arch/arm/mach-s5pv310/clock.c @@ -0,0 +1,544 @@ +/* linux/arch/arm/mach-s5pv310/clock.c + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5PV310 - Clock support + * + * 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 +#include +#include + +#include +#include +#include +#include +#include +#include + +#include +#include + +static struct clk clk_sclk_hdmi27m = { + .name = "sclk_hdmi27m", + .id = -1, + .rate = 27000000, +}; + +/* Core list of CMU_CPU side */ + +static struct clksrc_clk clk_mout_apll = { + .clk = { + .name = "mout_apll", + .id = -1, + }, + .sources = &clk_src_apll, + .reg_src = { .reg = S5P_CLKSRC_CPU, .shift = 0, .size = 1 }, + .reg_div = { .reg = S5P_CLKDIV_CPU, .shift = 24, .size = 3 }, +}; + +static struct clksrc_clk clk_mout_epll = { + .clk = { + .name = "mout_epll", + .id = -1, + }, + .sources = &clk_src_epll, + .reg_src = { .reg = S5P_CLKSRC_TOP0, .shift = 4, .size = 1 }, +}; + +static struct clksrc_clk clk_mout_mpll = { + .clk = { + .name = "mout_mpll", + .id = -1, + }, + .sources = &clk_src_mpll, + .reg_src = { .reg = S5P_CLKSRC_CPU, .shift = 8, .size = 1 }, +}; + +static struct clk *clkset_moutcore_list[] = { + [0] = &clk_mout_apll.clk, + [1] = &clk_mout_mpll.clk, +}; + +static struct clksrc_sources clkset_moutcore = { + .sources = clkset_moutcore_list, + .nr_sources = ARRAY_SIZE(clkset_moutcore_list), +}; + +static struct clksrc_clk clk_moutcore = { + .clk = { + .name = "moutcore", + .id = -1, + }, + .sources = &clkset_moutcore, + .reg_src = { .reg = S5P_CLKSRC_CPU, .shift = 16, .size = 1 }, +}; + +static struct clksrc_clk clk_coreclk = { + .clk = { + .name = "core_clk", + .id = -1, + .parent = &clk_moutcore.clk, + }, + .reg_div = { .reg = S5P_CLKDIV_CPU, .shift = 0, .size = 3 }, +}; + +static struct clksrc_clk clk_armclk = { + .clk = { + .name = "armclk", + .id = -1, + .parent = &clk_coreclk.clk, + }, +}; + +static struct clksrc_clk clk_aclk_corem0 = { + .clk = { + .name = "aclk_corem0", + .id = -1, + .parent = &clk_coreclk.clk, + }, + .reg_div = { .reg = S5P_CLKDIV_CPU, .shift = 4, .size = 3 }, +}; + +static struct clksrc_clk clk_aclk_cores = { + .clk = { + .name = "aclk_cores", + .id = -1, + .parent = &clk_coreclk.clk, + }, + .reg_div = { .reg = S5P_CLKDIV_CPU, .shift = 4, .size = 3 }, +}; + +static struct clksrc_clk clk_aclk_corem1 = { + .clk = { + .name = "aclk_corem1", + .id = -1, + .parent = &clk_coreclk.clk, + }, + .reg_div = { .reg = S5P_CLKDIV_CPU, .shift = 8, .size = 3 }, +}; + +static struct clksrc_clk clk_periphclk = { + .clk = { + .name = "periphclk", + .id = -1, + .parent = &clk_coreclk.clk, + }, + .reg_div = { .reg = S5P_CLKDIV_CPU, .shift = 12, .size = 3 }, +}; + +static struct clksrc_clk clk_atclk = { + .clk = { + .name = "atclk", + .id = -1, + .parent = &clk_moutcore.clk, + }, + .reg_div = { .reg = S5P_CLKDIV_CPU, .shift = 16, .size = 3 }, +}; + +static struct clksrc_clk clk_pclk_dbg = { + .clk = { + .name = "pclk_dbg", + .id = -1, + .parent = &clk_atclk.clk, + }, + .reg_div = { .reg = S5P_CLKDIV_CPU, .shift = 20, .size = 3 }, +}; + +/* Core list of CMU_CORE side */ + +static struct clk *clkset_corebus_list[] = { + [0] = &clk_mout_mpll.clk, + [1] = &clk_mout_apll.clk, +}; + +static struct clksrc_sources clkset_mout_corebus = { + .sources = clkset_corebus_list, + .nr_sources = ARRAY_SIZE(clkset_corebus_list), +}; + +static struct clksrc_clk clk_mout_corebus = { + .clk = { + .name = "mout_corebus", + .id = -1, + }, + .sources = &clkset_mout_corebus, + .reg_src = { .reg = S5P_CLKSRC_CORE, .shift = 4, .size = 1 }, +}; + +static struct clksrc_clk clk_sclk_dmc = { + .clk = { + .name = "sclk_dmc", + .id = -1, + .parent = &clk_mout_corebus.clk, + }, + .reg_div = { .reg = S5P_CLKDIV_CORE0, .shift = 12, .size = 3 }, +}; + +static struct clksrc_clk clk_aclk_cored = { + .clk = { + .name = "aclk_cored", + .id = -1, + .parent = &clk_sclk_dmc.clk, + }, + .reg_div = { .reg = S5P_CLKDIV_CORE0, .shift = 16, .size = 3 }, +}; + +static struct clksrc_clk clk_aclk_corep = { + .clk = { + .name = "aclk_corep", + .id = -1, + .parent = &clk_aclk_cored.clk, + }, + .reg_div = { .reg = S5P_CLKDIV_CORE0, .shift = 20, .size = 3 }, +}; + +static struct clksrc_clk clk_aclk_acp = { + .clk = { + .name = "aclk_acp", + .id = -1, + .parent = &clk_mout_corebus.clk, + }, + .reg_div = { .reg = S5P_CLKDIV_CORE0, .shift = 0, .size = 3 }, +}; + +static struct clksrc_clk clk_pclk_acp = { + .clk = { + .name = "pclk_acp", + .id = -1, + .parent = &clk_aclk_acp.clk, + }, + .reg_div = { .reg = S5P_CLKDIV_CORE0, .shift = 4, .size = 3 }, +}; + +/* Core list of CMU_TOP side */ + +static struct clk *clkset_aclk_top_list[] = { + [0] = &clk_mout_mpll.clk, + [1] = &clk_mout_apll.clk, +}; + +static struct clksrc_sources clkset_aclk_200 = { + .sources = clkset_aclk_top_list, + .nr_sources = ARRAY_SIZE(clkset_aclk_top_list), +}; + +static struct clksrc_clk clk_aclk_200 = { + .clk = { + .name = "aclk_200", + .id = -1, + }, + .sources = &clkset_aclk_200, + .reg_src = { .reg = S5P_CLKSRC_TOP0, .shift = 12, .size = 1 }, + .reg_div = { .reg = S5P_CLKDIV_TOP, .shift = 0, .size = 3 }, +}; + +static struct clksrc_sources clkset_aclk_100 = { + .sources = clkset_aclk_top_list, + .nr_sources = ARRAY_SIZE(clkset_aclk_top_list), +}; + +static struct clksrc_clk clk_aclk_100 = { + .clk = { + .name = "aclk_100", + .id = -1, + }, + .sources = &clkset_aclk_100, + .reg_src = { .reg = S5P_CLKSRC_TOP0, .shift = 16, .size = 1 }, + .reg_div = { .reg = S5P_CLKDIV_TOP, .shift = 4, .size = 4 }, +}; + +static struct clksrc_sources clkset_aclk_160 = { + .sources = clkset_aclk_top_list, + .nr_sources = ARRAY_SIZE(clkset_aclk_top_list), +}; + +static struct clksrc_clk clk_aclk_160 = { + .clk = { + .name = "aclk_160", + .id = -1, + }, + .sources = &clkset_aclk_160, + .reg_src = { .reg = S5P_CLKSRC_TOP0, .shift = 20, .size = 1 }, + .reg_div = { .reg = S5P_CLKDIV_TOP, .shift = 8, .size = 3 }, +}; + +static struct clksrc_sources clkset_aclk_133 = { + .sources = clkset_aclk_top_list, + .nr_sources = ARRAY_SIZE(clkset_aclk_top_list), +}; + +static struct clksrc_clk clk_aclk_133 = { + .clk = { + .name = "aclk_133", + .id = -1, + }, + .sources = &clkset_aclk_133, + .reg_src = { .reg = S5P_CLKSRC_TOP0, .shift = 24, .size = 1 }, + .reg_div = { .reg = S5P_CLKDIV_TOP, .shift = 12, .size = 3 }, +}; + +static struct clk *clkset_vpllsrc_list[] = { + [0] = &clk_fin_vpll, + [1] = &clk_sclk_hdmi27m, +}; + +static struct clksrc_sources clkset_vpllsrc = { + .sources = clkset_vpllsrc_list, + .nr_sources = ARRAY_SIZE(clkset_vpllsrc_list), +}; + +static struct clksrc_clk clk_vpllsrc = { + .clk = { + .name = "vpll_src", + .id = -1, + }, + .sources = &clkset_vpllsrc, + .reg_src = { .reg = S5P_CLKSRC_TOP1, .shift = 0, .size = 1 }, +}; + +static struct clk *clkset_sclk_vpll_list[] = { + [0] = &clk_vpllsrc.clk, + [1] = &clk_fout_vpll, +}; + +static struct clksrc_sources clkset_sclk_vpll = { + .sources = clkset_sclk_vpll_list, + .nr_sources = ARRAY_SIZE(clkset_sclk_vpll_list), +}; + +static struct clksrc_clk clk_sclk_vpll = { + .clk = { + .name = "sclk_vpll", + .id = -1, + }, + .sources = &clkset_sclk_vpll, + .reg_src = { .reg = S5P_CLKSRC_TOP0, .shift = 8, .size = 1 }, +}; + +static int s5pv310_clk_ip_peril_ctrl(struct clk *clk, int enable) +{ + return s5p_gatectrl(S5P_CLKGATE_IP_PERIL, clk, enable); +} + +static struct clk init_clocks_disable[] = { + { + .name = "timers", + .id = -1, + .parent = &clk_aclk_100.clk, + .enable = s5pv310_clk_ip_peril_ctrl, + .ctrlbit = (1<<24), + } +}; + +static struct clk init_clocks[] = { + /* Nothing here yet */ +}; + +static struct clk *clkset_group_list[] = { + [0] = &clk_ext_xtal_mux, + [1] = &clk_xusbxti, + [2] = &clk_sclk_hdmi27m, + [6] = &clk_mout_mpll.clk, + [7] = &clk_mout_epll.clk, + [8] = &clk_sclk_vpll.clk, +}; + +static struct clksrc_sources clkset_group = { + .sources = clkset_group_list, + .nr_sources = ARRAY_SIZE(clkset_group_list), +}; + +static struct clksrc_clk clksrcs[] = { + { + .clk = { + .name = "uclk1", + .id = 0, + .ctrlbit = (1 << 0), + .enable = s5pv310_clk_ip_peril_ctrl, + }, + .sources = &clkset_group, + .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 0, .size = 4 }, + .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 0, .size = 4 }, + }, { + .clk = { + .name = "uclk1", + .id = 1, + .enable = s5pv310_clk_ip_peril_ctrl, + .ctrlbit = (1 << 1), + }, + .sources = &clkset_group, + .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 4, .size = 4 }, + .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 4, .size = 4 }, + }, { + .clk = { + .name = "uclk1", + .id = 2, + .enable = s5pv310_clk_ip_peril_ctrl, + .ctrlbit = (1 << 2), + }, + .sources = &clkset_group, + .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 8, .size = 4 }, + .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 8, .size = 4 }, + }, { + .clk = { + .name = "uclk1", + .id = 3, + .enable = s5pv310_clk_ip_peril_ctrl, + .ctrlbit = (1 << 3), + }, + .sources = &clkset_group, + .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 12, .size = 4 }, + .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 12, .size = 4 }, + }, { + .clk = { + .name = "sclk_pwm", + .id = -1, + .enable = s5pv310_clk_ip_peril_ctrl, + .ctrlbit = (1 << 24), + }, + .sources = &clkset_group, + .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 24, .size = 4 }, + .reg_div = { .reg = S5P_CLKDIV_PERIL3, .shift = 0, .size = 4 }, + }, +}; + +/* Clock initialization code */ +static struct clksrc_clk *sysclks[] = { + &clk_mout_apll, + &clk_mout_epll, + &clk_mout_mpll, + &clk_moutcore, + &clk_coreclk, + &clk_armclk, + &clk_aclk_corem0, + &clk_aclk_cores, + &clk_aclk_corem1, + &clk_periphclk, + &clk_atclk, + &clk_pclk_dbg, + &clk_mout_corebus, + &clk_sclk_dmc, + &clk_aclk_cored, + &clk_aclk_corep, + &clk_aclk_acp, + &clk_pclk_acp, + &clk_vpllsrc, + &clk_sclk_vpll, + &clk_aclk_200, + &clk_aclk_100, + &clk_aclk_160, + &clk_aclk_133, +}; + +void __init_or_cpufreq s5pv310_setup_clocks(void) +{ + struct clk *xtal_clk; + unsigned long apll; + unsigned long mpll; + unsigned long epll; + unsigned long vpll; + unsigned long vpllsrc; + unsigned long xtal; + unsigned long armclk; + unsigned long aclk_corem0; + unsigned long aclk_cores; + unsigned long aclk_corem1; + unsigned long periphclk; + unsigned long sclk_dmc; + unsigned long aclk_cored; + unsigned long aclk_corep; + unsigned long aclk_acp; + unsigned long pclk_acp; + unsigned int ptr; + + printk(KERN_DEBUG "%s: registering clocks\n", __func__); + + xtal_clk = clk_get(NULL, "xtal"); + BUG_ON(IS_ERR(xtal_clk)); + + xtal = clk_get_rate(xtal_clk); + clk_put(xtal_clk); + + printk(KERN_DEBUG "%s: xtal is %ld\n", __func__, xtal); + + apll = s5p_get_pll45xx(xtal, __raw_readl(S5P_APLL_CON0), pll_4508); + mpll = s5p_get_pll45xx(xtal, __raw_readl(S5P_MPLL_CON0), pll_4508); + epll = s5p_get_pll46xx(xtal, __raw_readl(S5P_EPLL_CON0), + __raw_readl(S5P_EPLL_CON1), pll_4500); + + vpllsrc = clk_get_rate(&clk_vpllsrc.clk); + vpll = s5p_get_pll46xx(vpllsrc, __raw_readl(S5P_VPLL_CON0), + __raw_readl(S5P_VPLL_CON1), pll_4502); + + clk_fout_apll.rate = apll; + clk_fout_mpll.rate = mpll; + clk_fout_epll.rate = epll; + clk_fout_vpll.rate = vpll; + + printk(KERN_INFO "S5PV310: PLL settings, A=%ld, M=%ld, E=%ld V=%ld", + apll, mpll, epll, vpll); + + armclk = clk_get_rate(&clk_armclk.clk); + aclk_corem0 = clk_get_rate(&clk_aclk_corem0.clk); + aclk_cores = clk_get_rate(&clk_aclk_cores.clk); + aclk_corem1 = clk_get_rate(&clk_aclk_corem1.clk); + periphclk = clk_get_rate(&clk_periphclk.clk); + sclk_dmc = clk_get_rate(&clk_sclk_dmc.clk); + aclk_cored = clk_get_rate(&clk_aclk_cored.clk); + aclk_corep = clk_get_rate(&clk_aclk_corep.clk); + aclk_acp = clk_get_rate(&clk_aclk_acp.clk); + pclk_acp = clk_get_rate(&clk_pclk_acp.clk); + + printk(KERN_INFO "S5PV310: ARMCLK=%ld, COREM0=%ld, CORES=%ld\n" + "COREM1=%ld, PERI=%ld, DMC=%ld, CORED=%ld\n" + "COREP=%ld, ACLK_ACP=%ld, PCLK_ACP=%ld", + armclk, aclk_corem0, aclk_cores, aclk_corem1, + periphclk, sclk_dmc, aclk_cored, aclk_corep, + aclk_acp, pclk_acp); + + clk_f.rate = armclk; + clk_h.rate = sclk_dmc; + clk_p.rate = periphclk; + + for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++) + s3c_set_clksrc(&clksrcs[ptr], true); +} + +static struct clk *clks[] __initdata = { + /* Nothing here yet */ +}; + +void __init s5pv310_register_clocks(void) +{ + struct clk *clkp; + int ret; + int ptr; + + ret = s3c24xx_register_clocks(clks, ARRAY_SIZE(clks)); + if (ret > 0) + printk(KERN_ERR "Failed to register %u clocks\n", ret); + + for (ptr = 0; ptr < ARRAY_SIZE(sysclks); ptr++) + s3c_register_clksrc(sysclks[ptr], 1); + + s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs)); + s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks)); + + clkp = init_clocks_disable; + for (ptr = 0; ptr < ARRAY_SIZE(init_clocks_disable); ptr++, clkp++) { + ret = s3c24xx_register_clock(clkp); + if (ret < 0) { + printk(KERN_ERR "Failed to register clock %s (%d)\n", + clkp->name, ret); + } + (clkp->enable)(clkp, 0); + } + + s3c_pwmclk_init(); +} diff --git a/arch/arm/mach-s5pv310/include/mach/regs-clock.h b/arch/arm/mach-s5pv310/include/mach/regs-clock.h new file mode 100644 index 000000000000..59e3a7e94d80 --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/regs-clock.h @@ -0,0 +1,62 @@ +/* linux/arch/arm/mach-s5pv310/include/mach/regs-clock.h + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5PV310 - Clock register definitions + * + * 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. +*/ + +#ifndef __ASM_ARCH_REGS_CLOCK_H +#define __ASM_ARCH_REGS_CLOCK_H __FILE__ + +#include + +#define S5P_CLKREG(x) (S3C_VA_SYS + (x)) + +#define S5P_INFORM0 S5P_CLKREG(0x800) + +#define S5P_EPLL_CON0 S5P_CLKREG(0x1C110) +#define S5P_EPLL_CON1 S5P_CLKREG(0x1C114) +#define S5P_VPLL_CON0 S5P_CLKREG(0x1C120) +#define S5P_VPLL_CON1 S5P_CLKREG(0x1C124) + +#define S5P_CLKSRC_TOP0 S5P_CLKREG(0x1C210) +#define S5P_CLKSRC_TOP1 S5P_CLKREG(0x1C214) + +#define S5P_CLKSRC_PERIL0 S5P_CLKREG(0x1C250) + +#define S5P_CLKDIV_TOP S5P_CLKREG(0x1C510) + +#define S5P_CLKDIV_PERIL0 S5P_CLKREG(0x1C550) +#define S5P_CLKDIV_PERIL1 S5P_CLKREG(0x1C554) +#define S5P_CLKDIV_PERIL2 S5P_CLKREG(0x1C558) +#define S5P_CLKDIV_PERIL3 S5P_CLKREG(0x1C55C) +#define S5P_CLKDIV_PERIL4 S5P_CLKREG(0x1C560) +#define S5P_CLKDIV_PERIL5 S5P_CLKREG(0x1C564) + +#define S5P_CLKGATE_IP_PERIL S5P_CLKREG(0x1C950) + +#define S5P_CLKSRC_CORE S5P_CLKREG(0x20200) + +#define S5P_CLKDIV_CORE0 S5P_CLKREG(0x20500) + +#define S5P_APLL_LOCK S5P_CLKREG(0x24000) +#define S5P_MPLL_LOCK S5P_CLKREG(0x24004) +#define S5P_APLL_CON0 S5P_CLKREG(0x24100) +#define S5P_APLL_CON1 S5P_CLKREG(0x24104) +#define S5P_MPLL_CON0 S5P_CLKREG(0x24108) +#define S5P_MPLL_CON1 S5P_CLKREG(0x2410C) + +#define S5P_CLKSRC_CPU S5P_CLKREG(0x24200) +#define S5P_CLKMUX_STATCPU S5P_CLKREG(0x24400) + +#define S5P_CLKDIV_CPU S5P_CLKREG(0x24500) +#define S5P_CLKDIV_STATCPU S5P_CLKREG(0x24600) + +#define S5P_CLKGATE_SCLKCPU S5P_CLKREG(0x24800) + +#endif /* __ASM_ARCH_REGS_CLOCK_H */ diff --git a/arch/arm/plat-s5p/include/plat/pll.h b/arch/arm/plat-s5p/include/plat/pll.h index 7db322726bc2..4e8fe08cb70d 100644 --- a/arch/arm/plat-s5p/include/plat/pll.h +++ b/arch/arm/plat-s5p/include/plat/pll.h @@ -46,6 +46,47 @@ static inline unsigned long s5p_get_pll45xx(unsigned long baseclk, u32 pll_con, return (unsigned long)fvco; } +#define PLL46XX_KDIV_MASK (0xFFFF) +#define PLL46XX_MDIV_MASK (0x1FF) +#define PLL46XX_PDIV_MASK (0x3F) +#define PLL46XX_SDIV_MASK (0x7) +#define PLL46XX_MDIV_SHIFT (16) +#define PLL46XX_PDIV_SHIFT (8) +#define PLL46XX_SDIV_SHIFT (0) + +enum pll46xx_type_t { + pll_4600, + pll_4650, +}; + +static inline unsigned long s5p_get_pll46xx(unsigned long baseclk, + u32 pll_con0, u32 pll_con1, + enum pll46xx_type_t pll_type) +{ + unsigned long result; + u32 mdiv, pdiv, sdiv, kdiv; + u64 tmp; + + mdiv = (pll_con0 >> PLL46XX_MDIV_SHIFT) & PLL46XX_MDIV_MASK; + pdiv = (pll_con0 >> PLL46XX_PDIV_SHIFT) & PLL46XX_PDIV_MASK; + sdiv = (pll_con0 >> PLL46XX_SDIV_SHIFT) & PLL46XX_SDIV_MASK; + kdiv = pll_con1 & PLL46XX_KDIV_MASK; + + tmp = baseclk; + + if (pll_type == pll_4600) { + tmp *= (mdiv << 16) + kdiv; + do_div(tmp, (pdiv << sdiv)); + result = tmp >> 16; + } else { + tmp *= (mdiv << 10) + kdiv; + do_div(tmp, (pdiv << sdiv)); + result = tmp >> 10; + } + + return result; +} + #define PLL90XX_MDIV_MASK (0xFF) #define PLL90XX_PDIV_MASK (0x3F) #define PLL90XX_SDIV_MASK (0x7) -- cgit v1.2.3 From 84bbc16c1f6210b2dfc39344b132d5801c357a70 Mon Sep 17 00:00:00 2001 From: Changhwan Youn Date: Fri, 16 Jul 2010 12:12:07 +0900 Subject: ARM: S5PV310: Add IRQ support This patch adds IRQ support for S5PV310. ARM GIC is installed in S5PV310 instead of VIC which is in every other CPUs in S5P series. Several irq combiners are used to resolve the lack of irq lines in current implementation. Signed-off-by: Changhwan Youn Signed-off-by: Hyuk Lee Signed-off-by: Kukjin Kim --- arch/arm/mach-s5pv310/include/mach/irqs.h | 74 +++++++++++++++ arch/arm/mach-s5pv310/include/mach/regs-irq.h | 19 ++++ arch/arm/mach-s5pv310/irq-combiner.c | 125 ++++++++++++++++++++++++++ arch/arm/plat-s5p/irq.c | 2 + 4 files changed, 220 insertions(+) create mode 100644 arch/arm/mach-s5pv310/include/mach/irqs.h create mode 100644 arch/arm/mach-s5pv310/include/mach/regs-irq.h create mode 100644 arch/arm/mach-s5pv310/irq-combiner.c (limited to 'arch/arm/mach-s5pv310/include/mach') diff --git a/arch/arm/mach-s5pv310/include/mach/irqs.h b/arch/arm/mach-s5pv310/include/mach/irqs.h new file mode 100644 index 000000000000..56885ca3773c --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/irqs.h @@ -0,0 +1,74 @@ +/* linux/arch/arm/mach-s5pv310/include/mach/irqs.h + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5PV210 - IRQ definitions + * + * 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. +*/ + +#ifndef __ASM_ARCH_IRQS_H +#define __ASM_ARCH_IRQS_H __FILE__ + +#include + +/* Private Peripheral Interrupt */ +#define IRQ_PPI(x) S5P_IRQ(x+16) + +#define IRQ_LOCALTIMER IRQ_PPI(13) + +/* Shared Peripheral Interrupt */ +#define IRQ_SPI(x) S5P_IRQ(x+32) + +#define IRQ_EINT0 IRQ_SPI(40) +#define IRQ_EINT1 IRQ_SPI(41) +#define IRQ_EINT2 IRQ_SPI(42) +#define IRQ_EINT3 IRQ_SPI(43) +#define IRQ_USB_HSOTG IRQ_SPI(44) +#define IRQ_USB_HOST IRQ_SPI(45) +#define IRQ_MODEM_IF IRQ_SPI(46) +#define IRQ_ROTATOR IRQ_SPI(47) +#define IRQ_JPEG IRQ_SPI(48) +#define IRQ_2D IRQ_SPI(49) +#define IRQ_PCIE IRQ_SPI(50) +#define IRQ_SYSTEM_TIMER IRQ_SPI(51) +#define IRQ_MFC IRQ_SPI(52) +#define IRQ_WTD IRQ_SPI(53) +#define IRQ_AUDIO_SS IRQ_SPI(54) +#define IRQ_AC97 IRQ_SPI(55) +#define IRQ_SPDIF IRQ_SPI(56) +#define IRQ_KEYPAD IRQ_SPI(57) +#define IRQ_INTFEEDCTRL_SSS IRQ_SPI(58) +#define IRQ_SLIMBUS IRQ_SPI(59) +#define IRQ_PMU IRQ_SPI(60) +#define IRQ_TSI IRQ_SPI(61) +#define IRQ_SATA IRQ_SPI(62) +#define IRQ_GPS IRQ_SPI(63) + +#define MAX_IRQ_IN_COMBINER 8 +#define COMBINER_GROUP(x) ((x) * MAX_IRQ_IN_COMBINER + IRQ_SPI(64)) +#define COMBINER_IRQ(x, y) (COMBINER_GROUP(x) + y) + +#define IRQ_TIMER0_VIC COMBINER_IRQ(22, 0) +#define IRQ_TIMER1_VIC COMBINER_IRQ(22, 1) +#define IRQ_TIMER2_VIC COMBINER_IRQ(22, 2) +#define IRQ_TIMER3_VIC COMBINER_IRQ(22, 3) +#define IRQ_TIMER4_VIC COMBINER_IRQ(22, 4) + +#define IRQ_UART0 COMBINER_IRQ(26, 0) +#define IRQ_UART1 COMBINER_IRQ(26, 1) +#define IRQ_UART2 COMBINER_IRQ(26, 2) +#define IRQ_UART3 COMBINER_IRQ(26, 3) +#define IRQ_UART4 COMBINER_IRQ(26, 4) + +#define IRQ_IIC COMBINER_IRQ(27, 0) + +/* Set the default NR_IRQS */ +#define NR_IRQS COMBINER_IRQ(MAX_COMBINER_NR, 0) + +#define MAX_COMBINER_NR 39 + +#endif /* ASM_ARCH_IRQS_H */ diff --git a/arch/arm/mach-s5pv310/include/mach/regs-irq.h b/arch/arm/mach-s5pv310/include/mach/regs-irq.h new file mode 100644 index 000000000000..c6e09c7f9161 --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/regs-irq.h @@ -0,0 +1,19 @@ +/* linux/arch/arm/mach-s5pv310/include/mach/regs-irq.h + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5PV310 - IRQ register definitions + * + * 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. +*/ + +#ifndef __ASM_ARCH_REGS_IRQ_H +#define __ASM_ARCH_REGS_IRQ_H __FILE__ + +#include +#include + +#endif /* __ASM_ARCH_REGS_IRQ_H */ diff --git a/arch/arm/mach-s5pv310/irq-combiner.c b/arch/arm/mach-s5pv310/irq-combiner.c new file mode 100644 index 000000000000..0f7052164f23 --- /dev/null +++ b/arch/arm/mach-s5pv310/irq-combiner.c @@ -0,0 +1,125 @@ +/* linux/arch/arm/mach-s5pv310/irq-combiner.c + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Based on arch/arm/common/gic.c + * + * IRQ COMBINER support + * + * 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 + +#include + +#define COMBINER_ENABLE_SET 0x0 +#define COMBINER_ENABLE_CLEAR 0x4 +#define COMBINER_INT_STATUS 0xC + +static DEFINE_SPINLOCK(irq_controller_lock); + +struct combiner_chip_data { + unsigned int irq_offset; + void __iomem *base; +}; + +static struct combiner_chip_data combiner_data[MAX_COMBINER_NR]; + +static inline void __iomem *combiner_base(unsigned int irq) +{ + struct combiner_chip_data *combiner_data = get_irq_chip_data(irq); + return combiner_data->base; +} + +static void combiner_mask_irq(unsigned int irq) +{ + u32 mask = 1 << (irq % 32); + + __raw_writel(mask, combiner_base(irq) + COMBINER_ENABLE_CLEAR); +} + +static void combiner_unmask_irq(unsigned int irq) +{ + u32 mask = 1 << (irq % 32); + + __raw_writel(mask, combiner_base(irq) + COMBINER_ENABLE_SET); +} + +static void combiner_handle_cascade_irq(unsigned int irq, struct irq_desc *desc) +{ + struct combiner_chip_data *chip_data = get_irq_data(irq); + struct irq_chip *chip = get_irq_chip(irq); + unsigned int cascade_irq, combiner_irq; + unsigned long status; + + /* primary controller ack'ing */ + chip->ack(irq); + + spin_lock(&irq_controller_lock); + status = __raw_readl(chip_data->base + COMBINER_INT_STATUS); + spin_unlock(&irq_controller_lock); + + if (status == 0) + goto out; + + for (combiner_irq = 0; combiner_irq < 32; combiner_irq++) { + if (status & 0x1) + break; + status >>= 1; + } + + cascade_irq = combiner_irq + (chip_data->irq_offset & ~31); + if (unlikely(cascade_irq >= NR_IRQS)) + do_bad_IRQ(cascade_irq, desc); + else + generic_handle_irq(cascade_irq); + + out: + /* primary controller unmasking */ + chip->unmask(irq); +} + +static struct irq_chip combiner_chip = { + .name = "COMBINER", + .mask = combiner_mask_irq, + .unmask = combiner_unmask_irq, +}; + +void __init combiner_cascade_irq(unsigned int combiner_nr, unsigned int irq) +{ + if (combiner_nr >= MAX_COMBINER_NR) + BUG(); + if (set_irq_data(irq, &combiner_data[combiner_nr]) != 0) + BUG(); + set_irq_chained_handler(irq, combiner_handle_cascade_irq); +} + +void __init combiner_init(unsigned int combiner_nr, void __iomem *base, + unsigned int irq_start) +{ + unsigned int i; + + if (combiner_nr >= MAX_COMBINER_NR) + BUG(); + + combiner_data[combiner_nr].base = base; + combiner_data[combiner_nr].irq_offset = irq_start; + + /* Disable all interrupts */ + + __raw_writel(0xffffffff, base + COMBINER_ENABLE_CLEAR); + + /* Setup the Linux IRQ subsystem */ + + for (i = irq_start; i < combiner_data[combiner_nr].irq_offset + + MAX_IRQ_IN_COMBINER; i++) { + set_irq_chip(i, &combiner_chip); + set_irq_chip_data(i, &combiner_data[combiner_nr]); + set_irq_handler(i, handle_level_irq); + set_irq_flags(i, IRQF_VALID | IRQF_PROBE); + } +} diff --git a/arch/arm/plat-s5p/irq.c b/arch/arm/plat-s5p/irq.c index 25e1eb6de59e..5560b12035d1 100644 --- a/arch/arm/plat-s5p/irq.c +++ b/arch/arm/plat-s5p/irq.c @@ -56,11 +56,13 @@ static struct s3c_uart_irq uart_irqs[] = { void __init s5p_init_irq(u32 *vic, u32 num_vic) { +#ifdef CONFIG_ARM_VIC int irq; /* initialize the VICs */ for (irq = 0; irq < num_vic; irq++) vic_init(VA_VIC(irq), VIC_BASE(irq), vic[irq], 0); +#endif s3c_init_vic_timer_irq(IRQ_TIMER0_VIC, IRQ_TIMER0); s3c_init_vic_timer_irq(IRQ_TIMER1_VIC, IRQ_TIMER1); -- cgit v1.2.3 From cfca3a619baeaba3a0037fef5da48108e9c0bb1c Mon Sep 17 00:00:00 2001 From: Changhwan Youn Date: Mon, 26 Jul 2010 21:13:08 +0900 Subject: ARM: S5PV310: Add Timer support This patch adds timer support for S5PV310. Until now, all S5P SoCs use CONFIG_ARCH_USES_GETTIMEOFFSET macro as a default configuration. Instead,S5PV310 implements clocksource and clock_event_device to support the high resolution timer and tickless system. Signed-off-by: Changhwan Youn Signed-off-by: Hyuk Lee Signed-off-by: Kukjin Kim --- arch/arm/mach-s5pv310/include/mach/pwm-clock.h | 70 ++++++ arch/arm/mach-s5pv310/localtimer.c | 25 +++ arch/arm/mach-s5pv310/time.c | 287 +++++++++++++++++++++++++ arch/arm/plat-s5p/include/plat/s5pv310.h | 1 + arch/arm/plat-samsung/Makefile | 2 +- 5 files changed, 384 insertions(+), 1 deletion(-) create mode 100644 arch/arm/mach-s5pv310/include/mach/pwm-clock.h create mode 100644 arch/arm/mach-s5pv310/localtimer.c create mode 100644 arch/arm/mach-s5pv310/time.c (limited to 'arch/arm/mach-s5pv310/include/mach') diff --git a/arch/arm/mach-s5pv310/include/mach/pwm-clock.h b/arch/arm/mach-s5pv310/include/mach/pwm-clock.h new file mode 100644 index 000000000000..7e6da2701088 --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/pwm-clock.h @@ -0,0 +1,70 @@ +/* linux/arch/arm/mach-s5pv310/include/mach/pwm-clock.h + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * Copyright 2008 Openmoko, Inc. + * Copyright 2008 Simtec Electronics + * Ben Dooks + * http://armlinux.simtec.co.uk/ + * + * Based on arch/arm/mach-s3c64xx/include/mach/pwm-clock.h + * + * S5PV310 - pwm clock and timer support + * + * 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. +*/ + +#ifndef __ASM_ARCH_PWMCLK_H +#define __ASM_ARCH_PWMCLK_H __FILE__ + +/** + * pwm_cfg_src_is_tclk() - return whether the given mux config is a tclk + * @tcfg: The timer TCFG1 register bits shifted down to 0. + * + * Return true if the given configuration from TCFG1 is a TCLK instead + * any of the TDIV clocks. + */ +static inline int pwm_cfg_src_is_tclk(unsigned long tcfg) +{ + return tcfg == S3C64XX_TCFG1_MUX_TCLK; +} + +/** + * tcfg_to_divisor() - convert tcfg1 setting to a divisor + * @tcfg1: The tcfg1 setting, shifted down. + * + * Get the divisor value for the given tcfg1 setting. We assume the + * caller has already checked to see if this is not a TCLK source. + */ +static inline unsigned long tcfg_to_divisor(unsigned long tcfg1) +{ + return 1 << tcfg1; +} + +/** + * pwm_tdiv_has_div1() - does the tdiv setting have a /1 + * + * Return true if we have a /1 in the tdiv setting. + */ +static inline unsigned int pwm_tdiv_has_div1(void) +{ + return 1; +} + +/** + * pwm_tdiv_div_bits() - calculate TCFG1 divisor value. + * @div: The divisor to calculate the bit information for. + * + * Turn a divisor into the necessary bit field for TCFG1. + */ +static inline unsigned long pwm_tdiv_div_bits(unsigned int div) +{ + return ilog2(div); +} + +#define S3C_TCFG1_MUX_TCLK S3C64XX_TCFG1_MUX_TCLK + +#endif /* __ASM_ARCH_PWMCLK_H */ diff --git a/arch/arm/mach-s5pv310/localtimer.c b/arch/arm/mach-s5pv310/localtimer.c new file mode 100644 index 000000000000..2784036cd8b1 --- /dev/null +++ b/arch/arm/mach-s5pv310/localtimer.c @@ -0,0 +1,25 @@ +/* linux/arch/arm/mach-s5pv310/localtimer.c + * + * Cloned from linux/arch/arm/mach-realview/localtimer.c + * + * Copyright (C) 2002 ARM Ltd. + * All Rights Reserved + * + * 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 + +#include +#include + +/* + * Setup the local clock events for a CPU. + */ +void __cpuinit local_timer_setup(struct clock_event_device *evt) +{ + evt->irq = IRQ_LOCALTIMER; + twd_timer_setup(evt); +} diff --git a/arch/arm/mach-s5pv310/time.c b/arch/arm/mach-s5pv310/time.c new file mode 100644 index 000000000000..01b012ad1bfd --- /dev/null +++ b/arch/arm/mach-s5pv310/time.c @@ -0,0 +1,287 @@ +/* linux/arch/arm/mach-s5pv310/time.c + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * S5PV310 (and compatible) HRT support + * PWM 2/4 is used for this feature + * + * 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 +#include +#include +#include +#include +#include +#include + +#include + +#include +#include +#include + +static unsigned long clock_count_per_tick; + +static struct clk *tin2; +static struct clk *tin4; +static struct clk *tdiv2; +static struct clk *tdiv4; +static struct clk *timerclk; + +static void s5pv310_pwm_stop(unsigned int pwm_id) +{ + unsigned long tcon; + + tcon = __raw_readl(S3C2410_TCON); + + switch (pwm_id) { + case 2: + tcon &= ~S3C2410_TCON_T2START; + break; + case 4: + tcon &= ~S3C2410_TCON_T4START; + break; + default: + break; + } + __raw_writel(tcon, S3C2410_TCON); +} + +static void s5pv310_pwm_init(unsigned int pwm_id, unsigned long tcnt) +{ + unsigned long tcon; + + tcon = __raw_readl(S3C2410_TCON); + + /* timers reload after counting zero, so reduce the count by 1 */ + tcnt--; + + /* ensure timer is stopped... */ + switch (pwm_id) { + case 2: + tcon &= ~(0xf<<12); + tcon |= S3C2410_TCON_T2MANUALUPD; + + __raw_writel(tcnt, S3C2410_TCNTB(2)); + __raw_writel(tcnt, S3C2410_TCMPB(2)); + __raw_writel(tcon, S3C2410_TCON); + + break; + case 4: + tcon &= ~(7<<20); + tcon |= S3C2410_TCON_T4MANUALUPD; + + __raw_writel(tcnt, S3C2410_TCNTB(4)); + __raw_writel(tcnt, S3C2410_TCMPB(4)); + __raw_writel(tcon, S3C2410_TCON); + + break; + default: + break; + } +} + +static inline void s5pv310_pwm_start(unsigned int pwm_id, bool periodic) +{ + unsigned long tcon; + + tcon = __raw_readl(S3C2410_TCON); + + switch (pwm_id) { + case 2: + tcon |= S3C2410_TCON_T2START; + tcon &= ~S3C2410_TCON_T2MANUALUPD; + + if (periodic) + tcon |= S3C2410_TCON_T2RELOAD; + else + tcon &= ~S3C2410_TCON_T2RELOAD; + break; + case 4: + tcon |= S3C2410_TCON_T4START; + tcon &= ~S3C2410_TCON_T4MANUALUPD; + + if (periodic) + tcon |= S3C2410_TCON_T4RELOAD; + else + tcon &= ~S3C2410_TCON_T4RELOAD; + break; + default: + break; + } + __raw_writel(tcon, S3C2410_TCON); +} + +static int s5pv310_pwm_set_next_event(unsigned long cycles, + struct clock_event_device *evt) +{ + s5pv310_pwm_init(2, cycles); + s5pv310_pwm_start(2, 0); + return 0; +} + +static void s5pv310_pwm_set_mode(enum clock_event_mode mode, + struct clock_event_device *evt) +{ + s5pv310_pwm_stop(2); + + switch (mode) { + case CLOCK_EVT_MODE_PERIODIC: + s5pv310_pwm_init(2, clock_count_per_tick); + s5pv310_pwm_start(2, 1); + break; + case CLOCK_EVT_MODE_ONESHOT: + break; + case CLOCK_EVT_MODE_UNUSED: + case CLOCK_EVT_MODE_SHUTDOWN: + case CLOCK_EVT_MODE_RESUME: + break; + } +} + +static struct clock_event_device pwm_event_device = { + .name = "pwm_timer2", + .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, + .rating = 200, + .shift = 32, + .set_next_event = s5pv310_pwm_set_next_event, + .set_mode = s5pv310_pwm_set_mode, +}; + +irqreturn_t s5pv310_clock_event_isr(int irq, void *dev_id) +{ + struct clock_event_device *evt = &pwm_event_device; + + evt->event_handler(evt); + + return IRQ_HANDLED; +} + +static struct irqaction s5pv310_clock_event_irq = { + .name = "pwm_timer2_irq", + .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, + .handler = s5pv310_clock_event_isr, +}; + +static void __init s5pv310_clockevent_init(void) +{ + unsigned long pclk; + unsigned long clock_rate; + struct clk *tscaler; + + pclk = clk_get_rate(timerclk); + + /* configure clock tick */ + + tscaler = clk_get_parent(tdiv2); + + clk_set_rate(tscaler, pclk / 2); + clk_set_rate(tdiv2, pclk / 2); + clk_set_parent(tin2, tdiv2); + + clock_rate = clk_get_rate(tin2); + + clock_count_per_tick = clock_rate / HZ; + + pwm_event_device.mult = + div_sc(clock_rate, NSEC_PER_SEC, pwm_event_device.shift); + pwm_event_device.max_delta_ns = + clockevent_delta2ns(-1, &pwm_event_device); + pwm_event_device.min_delta_ns = + clockevent_delta2ns(1, &pwm_event_device); + + pwm_event_device.cpumask = cpumask_of(0); + clockevents_register_device(&pwm_event_device); + + setup_irq(IRQ_TIMER2, &s5pv310_clock_event_irq); +} + +static cycle_t s5pv310_pwm4_read(struct clocksource *cs) +{ + return (cycle_t) ~__raw_readl(S3C_TIMERREG(0x40)); +} + +struct clocksource pwm_clocksource = { + .name = "pwm_timer4", + .rating = 250, + .read = s5pv310_pwm4_read, + .mask = CLOCKSOURCE_MASK(32), + .shift = 20, + .flags = CLOCK_SOURCE_IS_CONTINUOUS , +}; + +static void __init s5pv310_clocksource_init(void) +{ + unsigned long pclk; + unsigned long clock_rate; + + pclk = clk_get_rate(timerclk); + + clk_set_rate(tdiv4, pclk / 2); + clk_set_parent(tin4, tdiv4); + + clock_rate = clk_get_rate(tin4); + + s5pv310_pwm_init(4, ~0); + s5pv310_pwm_start(4, 1); + + pwm_clocksource.mult = + clocksource_khz2mult(clock_rate/1000, pwm_clocksource.shift); + + if (clocksource_register(&pwm_clocksource)) + panic("%s: can't register clocksource\n", pwm_clocksource.name); +} + +static void __init s5pv310_timer_resources(void) +{ + struct platform_device tmpdev; + + tmpdev.dev.bus = &platform_bus_type; + + timerclk = clk_get(NULL, "timers"); + if (IS_ERR(timerclk)) + panic("failed to get timers clock for system timer"); + + clk_enable(timerclk); + + tmpdev.id = 2; + tin2 = clk_get(&tmpdev.dev, "pwm-tin"); + if (IS_ERR(tin2)) + panic("failed to get pwm-tin2 clock for system timer"); + + tdiv2 = clk_get(&tmpdev.dev, "pwm-tdiv"); + if (IS_ERR(tdiv2)) + panic("failed to get pwm-tdiv2 clock for system timer"); + clk_enable(tin2); + + tmpdev.id = 4; + tin4 = clk_get(&tmpdev.dev, "pwm-tin"); + if (IS_ERR(tin4)) + panic("failed to get pwm-tin4 clock for system timer"); + + tdiv4 = clk_get(&tmpdev.dev, "pwm-tdiv"); + if (IS_ERR(tdiv4)) + panic("failed to get pwm-tdiv4 clock for system timer"); + + clk_enable(tin4); +} + +static void __init s5pv310_timer_init(void) +{ +#ifdef CONFIG_LOCAL_TIMERS + twd_base = S5P_VA_TWD; +#endif + + s5pv310_timer_resources(); + s5pv310_clockevent_init(); + s5pv310_clocksource_init(); +} + +struct sys_timer s5pv310_timer = { + .init = s5pv310_timer_init, +}; diff --git a/arch/arm/plat-s5p/include/plat/s5pv310.h b/arch/arm/plat-s5p/include/plat/s5pv310.h index d2f05e1cad9d..769c991ceb37 100644 --- a/arch/arm/plat-s5p/include/plat/s5pv310.h +++ b/arch/arm/plat-s5p/include/plat/s5pv310.h @@ -22,6 +22,7 @@ extern int s5pv310_init(void); extern void s5pv310_init_irq(void); extern void s5pv310_map_io(void); extern void s5pv310_init_clocks(int xtal); +extern struct sys_timer s5pv310_timer; #define s5pv310_init_uarts s5pv310_common_init_uarts diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile index b1d82cc5e716..0d5bf8a20a63 100644 --- a/arch/arm/plat-samsung/Makefile +++ b/arch/arm/plat-samsung/Makefile @@ -12,7 +12,7 @@ obj- := # Objects we always build independent of SoC choice obj-y += init.o -obj-y += time.o +obj-$(CONFIG_ARCH_USES_GETTIMEOFFSET) += time.o obj-y += clock.o obj-y += pwm-clock.o obj-y += gpio.o -- cgit v1.2.3