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author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2006-06-24 22:21:49 +0100 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-06-24 22:21:49 +0100 |
commit | e11c910b5bcc1dbc38a5af7a24be2812fc956b27 (patch) | |
tree | 38fb4c1b23bf2085cd0b05db9c85e3b91819130f /arch | |
parent | c1e08adc86f886ba0ad7c8f29c240d6e833e7ec7 (diff) | |
parent | c9b949a734adef5d05cbaa0b0546b924ca517155 (diff) | |
download | linux-stable-e11c910b5bcc1dbc38a5af7a24be2812fc956b27.tar.gz linux-stable-e11c910b5bcc1dbc38a5af7a24be2812fc956b27.tar.bz2 linux-stable-e11c910b5bcc1dbc38a5af7a24be2812fc956b27.zip |
Merge S3C24xx branch
Diffstat (limited to 'arch')
-rw-r--r-- | arch/arm/mach-s3c2410/Kconfig | 20 | ||||
-rw-r--r-- | arch/arm/mach-s3c2410/Makefile | 6 | ||||
-rw-r--r-- | arch/arm/mach-s3c2410/clock.c | 21 | ||||
-rw-r--r-- | arch/arm/mach-s3c2410/clock.h | 2 | ||||
-rw-r--r-- | arch/arm/mach-s3c2410/cpu.c | 37 | ||||
-rw-r--r-- | arch/arm/mach-s3c2410/cpu.h | 1 | ||||
-rw-r--r-- | arch/arm/mach-s3c2410/irq.c | 57 | ||||
-rw-r--r-- | arch/arm/mach-s3c2410/mach-smdk2413.c | 126 | ||||
-rw-r--r-- | arch/arm/mach-s3c2410/pm-simtec.c | 3 | ||||
-rw-r--r-- | arch/arm/mach-s3c2410/s3c2410-clock.c | 10 | ||||
-rw-r--r-- | arch/arm/mach-s3c2410/s3c2410-gpio.c | 13 | ||||
-rw-r--r-- | arch/arm/mach-s3c2410/s3c2412-clock.c | 711 | ||||
-rw-r--r-- | arch/arm/mach-s3c2410/s3c2412.c | 195 | ||||
-rw-r--r-- | arch/arm/mach-s3c2410/s3c2412.h | 29 | ||||
-rw-r--r-- | arch/arm/mm/Kconfig | 10 |
15 files changed, 1197 insertions, 44 deletions
diff --git a/arch/arm/mach-s3c2410/Kconfig b/arch/arm/mach-s3c2410/Kconfig index 7b786d725636..f5d9cd498a5f 100644 --- a/arch/arm/mach-s3c2410/Kconfig +++ b/arch/arm/mach-s3c2410/Kconfig @@ -81,6 +81,12 @@ config SMDK2440_CPU2442 depends on ARCH_S3C2440 select CPU_S3C2442 +config MACH_SMDK2413 + bool "SMDK2413" + select CPU_S3C2412 + select MACH_SMDK + help + Say Y here if you are using an SMDK2413 config MACH_VR1000 bool "Thorcom VR1000" @@ -127,6 +133,20 @@ config CPU_S3C2410 Support for S3C2410 and S3C2410A family from the S3C24XX line of Samsung Mobile CPUs. +# internal node to signify if we are only dealing with an S3C2412 + +config CPU_S3C2412_ONLY + bool + depends on ARCH_S3C2410 && !CPU_S3C2400 && !CPU_S3C2410 && \ + !CPU_S3C2440 && !CPU_S3C2442 && CPU_S3C2412 + default y if CPU_S3C2412 + +config CPU_S3C2412 + bool + depends on ARCH_S3C2410 + help + Support for the S3C2412 and S3C2413 SoCs from the S3C24XX line + config CPU_S3C244X bool depends on ARCH_S3C2410 && (CPU_S3C2440 || CPU_S3C2442) diff --git a/arch/arm/mach-s3c2410/Makefile b/arch/arm/mach-s3c2410/Makefile index 372dbcea1434..0c7938645df6 100644 --- a/arch/arm/mach-s3c2410/Makefile +++ b/arch/arm/mach-s3c2410/Makefile @@ -24,6 +24,11 @@ obj-$(CONFIG_S3C2410_DMA) += dma.o obj-$(CONFIG_PM) += pm.o sleep.o obj-$(CONFIG_PM_SIMTEC) += pm-simtec.o +# S3C2412 support +obj-$(CONFIG_CPU_S3C2412) += s3c2412.o +obj-$(CONFIG_CPU_S3C2412) += s3c2412-clock.o + +# # S3C244X support obj-$(CONFIG_CPU_S3C244X) += s3c244x.o @@ -57,6 +62,7 @@ obj-$(CONFIG_ARCH_BAST) += mach-bast.o usb-simtec.o obj-$(CONFIG_ARCH_H1940) += mach-h1940.o obj-$(CONFIG_MACH_N30) += mach-n30.o obj-$(CONFIG_ARCH_SMDK2410) += mach-smdk2410.o +obj-$(CONFIG_MACH_SMDK2413) += mach-smdk2413.o obj-$(CONFIG_ARCH_S3C2440) += mach-smdk2440.o obj-$(CONFIG_MACH_VR1000) += mach-vr1000.o usb-simtec.o obj-$(CONFIG_MACH_RX3715) += mach-rx3715.o diff --git a/arch/arm/mach-s3c2410/clock.c b/arch/arm/mach-s3c2410/clock.c index c5c93c333ac6..e13fb6778890 100644 --- a/arch/arm/mach-s3c2410/clock.c +++ b/arch/arm/mach-s3c2410/clock.c @@ -213,7 +213,7 @@ EXPORT_SYMBOL(clk_set_parent); /* base clocks */ -static struct clk clk_xtal = { +struct clk clk_xtal = { .name = "xtal", .id = -1, .rate = 0, @@ -221,6 +221,11 @@ static struct clk clk_xtal = { .ctrlbit = 0, }; +struct clk clk_mpll = { + .name = "mpll", + .id = -1, +}; + struct clk clk_upll = { .name = "upll", .id = -1, @@ -232,7 +237,7 @@ struct clk clk_f = { .name = "fclk", .id = -1, .rate = 0, - .parent = NULL, + .parent = &clk_mpll, .ctrlbit = 0, }; @@ -263,14 +268,14 @@ struct clk clk_usb_bus = { static int s3c24xx_dclk_enable(struct clk *clk, int enable) { - unsigned long dclkcon = __raw_readl(S3C2410_DCLKCON); + unsigned long dclkcon = __raw_readl(S3C24XX_DCLKCON); if (enable) dclkcon |= clk->ctrlbit; else dclkcon &= ~clk->ctrlbit; - __raw_writel(dclkcon, S3C2410_DCLKCON); + __raw_writel(dclkcon, S3C24XX_DCLKCON); return 0; } @@ -289,7 +294,7 @@ static int s3c24xx_dclk_setparent(struct clk *clk, struct clk *parent) clk->parent = parent; - dclkcon = __raw_readl(S3C2410_DCLKCON); + dclkcon = __raw_readl(S3C24XX_DCLKCON); if (clk->ctrlbit == S3C2410_DCLKCON_DCLK0EN) { if (uclk) @@ -303,7 +308,7 @@ static int s3c24xx_dclk_setparent(struct clk *clk, struct clk *parent) dclkcon &= ~S3C2410_DCLKCON_DCLK1_UCLK; } - __raw_writel(dclkcon, S3C2410_DCLKCON); + __raw_writel(dclkcon, S3C24XX_DCLKCON); return 0; } @@ -413,6 +418,7 @@ int __init s3c24xx_setup_clocks(unsigned long xtal, clk_xtal.rate = xtal; clk_upll.rate = s3c2410_get_pll(__raw_readl(S3C2410_UPLLCON), xtal); + clk_mpll.rate = fclk; clk_h.rate = hclk; clk_p.rate = pclk; clk_f.rate = fclk; @@ -424,6 +430,9 @@ int __init s3c24xx_setup_clocks(unsigned long xtal, if (s3c24xx_register_clock(&clk_xtal) < 0) printk(KERN_ERR "failed to register master xtal\n"); + if (s3c24xx_register_clock(&clk_mpll) < 0) + printk(KERN_ERR "failed to register mpll clock\n"); + if (s3c24xx_register_clock(&clk_upll) < 0) printk(KERN_ERR "failed to register upll clock\n"); diff --git a/arch/arm/mach-s3c2410/clock.h b/arch/arm/mach-s3c2410/clock.h index 9456c81eb5d3..7f0ea03e1d49 100644 --- a/arch/arm/mach-s3c2410/clock.h +++ b/arch/arm/mach-s3c2410/clock.h @@ -42,7 +42,9 @@ extern struct clk clk_usb_bus; extern struct clk clk_f; extern struct clk clk_h; extern struct clk clk_p; +extern struct clk clk_mpll; extern struct clk clk_upll; +extern struct clk clk_xtal; /* exports for arch/arm/mach-s3c2410 * diff --git a/arch/arm/mach-s3c2410/cpu.c b/arch/arm/mach-s3c2410/cpu.c index 52842e6e86e6..1c3c6adae6c4 100644 --- a/arch/arm/mach-s3c2410/cpu.c +++ b/arch/arm/mach-s3c2410/cpu.c @@ -44,6 +44,7 @@ #include "clock.h" #include "s3c2400.h" #include "s3c2410.h" +#include "s3c2412.h" #include "s3c244x.h" #include "s3c2440.h" #include "s3c2442.h" @@ -62,6 +63,7 @@ struct cpu_table { static const char name_s3c2400[] = "S3C2400"; static const char name_s3c2410[] = "S3C2410"; +static const char name_s3c2412[] = "S3C2412"; static const char name_s3c2440[] = "S3C2440"; static const char name_s3c2442[] = "S3C2442"; static const char name_s3c2410a[] = "S3C2410A"; @@ -114,6 +116,15 @@ static struct cpu_table cpu_ids[] __initdata = { .name = name_s3c2442 }, { + .idcode = 0x32412001, + .idmask = 0xffffffff, + .map_io = s3c2412_map_io, + .init_clocks = s3c2412_init_clocks, + .init_uarts = s3c2412_init_uarts, + .init = s3c2412_init, + .name = name_s3c2412, + }, + { .idcode = 0x0, /* S3C2400 doesn't have an idcode */ .idmask = 0xffffffff, .map_io = s3c2400_map_io, @@ -171,6 +182,24 @@ void s3c24xx_set_board(struct s3c24xx_board *b) static struct cpu_table *cpu; +static unsigned long s3c24xx_read_idcode_v5(void) +{ +#if defined(CONFIG_CPU_S3C2412) || defined(CONFIG_CPU_S3C2413) + return __raw_readl(S3C2412_GSTATUS1); +#else + return 1UL; /* don't look like an 2400 */ +#endif +} + +static unsigned long s3c24xx_read_idcode_v4(void) +{ +#ifndef CONFIG_CPU_S3C2400 + return __raw_readl(S3C2410_GSTATUS1); +#else + return 0UL; +#endif +} + void __init s3c24xx_init_io(struct map_desc *mach_desc, int size) { unsigned long idcode = 0x0; @@ -178,9 +207,11 @@ void __init s3c24xx_init_io(struct map_desc *mach_desc, int size) /* initialise the io descriptors we need for initialisation */ iotable_init(s3c_iodesc, ARRAY_SIZE(s3c_iodesc)); -#ifndef CONFIG_CPU_S3C2400 - idcode = __raw_readl(S3C2410_GSTATUS1); -#endif + if (cpu_architecture() >= CPU_ARCH_ARMv5) { + idcode = s3c24xx_read_idcode_v5(); + } else { + idcode = s3c24xx_read_idcode_v4(); + } cpu = s3c_lookup_cpu(idcode); diff --git a/arch/arm/mach-s3c2410/cpu.h b/arch/arm/mach-s3c2410/cpu.h index 21c62dc29bb2..b0ed9d2d141b 100644 --- a/arch/arm/mach-s3c2410/cpu.h +++ b/arch/arm/mach-s3c2410/cpu.h @@ -74,5 +74,6 @@ extern struct sys_timer s3c24xx_timer; /* system device classes */ extern struct sysdev_class s3c2410_sysclass; +extern struct sysdev_class s3c2412_sysclass; extern struct sysdev_class s3c2440_sysclass; extern struct sysdev_class s3c2442_sysclass; diff --git a/arch/arm/mach-s3c2410/irq.c b/arch/arm/mach-s3c2410/irq.c index 66d8c068e940..6822dc7f7799 100644 --- a/arch/arm/mach-s3c2410/irq.c +++ b/arch/arm/mach-s3c2410/irq.c @@ -191,13 +191,9 @@ static struct irqchip s3c_irq_chip = { .ack = s3c_irq_ack, .mask = s3c_irq_mask, .unmask = s3c_irq_unmask, - .set_wake = s3c_irq_wake + .set_wake = s3c_irq_wake }; -/* S3C2410_EINTMASK - * S3C2410_EINTPEND - */ - static void s3c_irqext_mask(unsigned int irqno) { @@ -205,9 +201,9 @@ s3c_irqext_mask(unsigned int irqno) irqno -= EXTINT_OFF; - mask = __raw_readl(S3C2410_EINTMASK); + mask = __raw_readl(S3C24XX_EINTMASK); mask |= ( 1UL << irqno); - __raw_writel(mask, S3C2410_EINTMASK); + __raw_writel(mask, S3C24XX_EINTMASK); if (irqno <= (IRQ_EINT7 - EXTINT_OFF)) { /* check to see if all need masking */ @@ -232,11 +228,11 @@ s3c_irqext_ack(unsigned int irqno) bit = 1UL << (irqno - EXTINT_OFF); - mask = __raw_readl(S3C2410_EINTMASK); + mask = __raw_readl(S3C24XX_EINTMASK); - __raw_writel(bit, S3C2410_EINTPEND); + __raw_writel(bit, S3C24XX_EINTPEND); - req = __raw_readl(S3C2410_EINTPEND); + req = __raw_readl(S3C24XX_EINTPEND); req &= ~mask; /* not sure if we should be acking the parent irq... */ @@ -257,9 +253,9 @@ s3c_irqext_unmask(unsigned int irqno) irqno -= EXTINT_OFF; - mask = __raw_readl(S3C2410_EINTMASK); + mask = __raw_readl(S3C24XX_EINTMASK); mask &= ~( 1UL << irqno); - __raw_writel(mask, S3C2410_EINTMASK); + __raw_writel(mask, S3C24XX_EINTMASK); s3c_irq_unmask((irqno <= (IRQ_EINT7 - EXTINT_OFF)) ? IRQ_EINT4t7 : IRQ_EINT8t23); } @@ -275,28 +271,28 @@ s3c_irqext_type(unsigned int irq, unsigned int type) if ((irq >= IRQ_EINT0) && (irq <= IRQ_EINT3)) { gpcon_reg = S3C2410_GPFCON; - extint_reg = S3C2410_EXTINT0; + extint_reg = S3C24XX_EXTINT0; gpcon_offset = (irq - IRQ_EINT0) * 2; extint_offset = (irq - IRQ_EINT0) * 4; } else if ((irq >= IRQ_EINT4) && (irq <= IRQ_EINT7)) { gpcon_reg = S3C2410_GPFCON; - extint_reg = S3C2410_EXTINT0; + extint_reg = S3C24XX_EXTINT0; gpcon_offset = (irq - (EXTINT_OFF)) * 2; extint_offset = (irq - (EXTINT_OFF)) * 4; } else if ((irq >= IRQ_EINT8) && (irq <= IRQ_EINT15)) { gpcon_reg = S3C2410_GPGCON; - extint_reg = S3C2410_EXTINT1; + extint_reg = S3C24XX_EXTINT1; gpcon_offset = (irq - IRQ_EINT8) * 2; extint_offset = (irq - IRQ_EINT8) * 4; } else if ((irq >= IRQ_EINT16) && (irq <= IRQ_EINT23)) { gpcon_reg = S3C2410_GPGCON; - extint_reg = S3C2410_EXTINT2; + extint_reg = S3C24XX_EXTINT2; gpcon_offset = (irq - IRQ_EINT8) * 2; extint_offset = (irq - IRQ_EINT16) * 4; } else @@ -572,6 +568,23 @@ s3c_irq_demux_uart2(unsigned int irq, s3c_irq_demux_uart(IRQ_S3CUART_RX2, regs); } +static void +s3c_irq_demux_extint(unsigned int irq, + struct irqdesc *desc, + struct pt_regs *regs) +{ + unsigned long eintpnd = __raw_readl(S3C24XX_EINTPEND); + unsigned long eintmsk = __raw_readl(S3C24XX_EINTMASK); + + eintpnd &= ~eintmsk; + + if (eintpnd) { + irq = fls(eintpnd); + irq += (IRQ_EINT4 - (4 + 1)); + + desc_handle_irq(irq, irq_desc + irq, regs); + } +} /* s3c24xx_init_irq * @@ -591,12 +604,12 @@ void __init s3c24xx_init_irq(void) last = 0; for (i = 0; i < 4; i++) { - pend = __raw_readl(S3C2410_EINTPEND); + pend = __raw_readl(S3C24XX_EINTPEND); if (pend == 0 || pend == last) break; - __raw_writel(pend, S3C2410_EINTPEND); + __raw_writel(pend, S3C24XX_EINTPEND); printk("irq: clearing pending ext status %08x\n", (int)pend); last = pend; } @@ -630,12 +643,14 @@ void __init s3c24xx_init_irq(void) irqdbf("s3c2410_init_irq: registering s3c2410 interrupt handlers\n"); - for (irqno = IRQ_BATT_FLT; irqno <= IRQ_ADCPARENT; irqno++) { + for (irqno = IRQ_EINT4t7; irqno <= IRQ_ADCPARENT; irqno++) { /* set all the s3c2410 internal irqs */ switch (irqno) { /* deal with the special IRQs (cascaded) */ + case IRQ_EINT4t7: + case IRQ_EINT8t23: case IRQ_UART0: case IRQ_UART1: case IRQ_UART2: @@ -659,12 +674,14 @@ void __init s3c24xx_init_irq(void) /* setup the cascade irq handlers */ + set_irq_chained_handler(IRQ_EINT4t7, s3c_irq_demux_extint); + set_irq_chained_handler(IRQ_EINT8t23, s3c_irq_demux_extint); + set_irq_chained_handler(IRQ_UART0, s3c_irq_demux_uart0); set_irq_chained_handler(IRQ_UART1, s3c_irq_demux_uart1); set_irq_chained_handler(IRQ_UART2, s3c_irq_demux_uart2); set_irq_chained_handler(IRQ_ADCPARENT, s3c_irq_demux_adc); - /* external interrupts */ for (irqno = IRQ_EINT0; irqno <= IRQ_EINT3; irqno++) { diff --git a/arch/arm/mach-s3c2410/mach-smdk2413.c b/arch/arm/mach-s3c2410/mach-smdk2413.c new file mode 100644 index 000000000000..b7ef7d3c54a9 --- /dev/null +++ b/arch/arm/mach-s3c2410/mach-smdk2413.c @@ -0,0 +1,126 @@ +/* linux/arch/arm/mach-s3c2410/mach-smdk2413.c + * + * Copyright (c) 2006 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * Thanks to Dimity Andric (TomTom) and Steven Ryu (Samsung) for the + * loans of SMDK2413 to work with. + * + * 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/kernel.h> +#include <linux/types.h> +#include <linux/interrupt.h> +#include <linux/list.h> +#include <linux/timer.h> +#include <linux/init.h> +#include <linux/platform_device.h> + +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <asm/mach/irq.h> + +#include <asm/hardware.h> +#include <asm/hardware/iomd.h> +#include <asm/setup.h> +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/mach-types.h> + +//#include <asm/debug-ll.h> +#include <asm/arch/regs-serial.h> +#include <asm/arch/regs-gpio.h> +#include <asm/arch/regs-lcd.h> + +#include <asm/arch/idle.h> +#include <asm/arch/fb.h> + +#include "s3c2410.h" +#include "s3c2412.h" +#include "clock.h" +#include "devs.h" +#include "cpu.h" + +#include "common-smdk.h" + +static struct map_desc smdk2413_iodesc[] __initdata = { +}; + +static struct s3c2410_uartcfg smdk2413_uartcfgs[] __initdata = { + [0] = { + .hwport = 0, + .flags = 0, + .ucon = 0x3c5, + .ulcon = 0x03, + .ufcon = 0x51, + }, + [1] = { + .hwport = 1, + .flags = 0, + .ucon = 0x3c5, + .ulcon = 0x03, + .ufcon = 0x51, + }, + /* IR port */ + [2] = { + .hwport = 2, + .flags = 0, + .ucon = 0x3c5, + .ulcon = 0x43, + .ufcon = 0x51, + } +}; + +static struct platform_device *smdk2413_devices[] __initdata = { + &s3c_device_usb, + //&s3c_device_lcd, + &s3c_device_wdt, + &s3c_device_i2c, + &s3c_device_iis, +}; + +static struct s3c24xx_board smdk2413_board __initdata = { + .devices = smdk2413_devices, + .devices_count = ARRAY_SIZE(smdk2413_devices) +}; + +static void __init smdk2413_fixup(struct machine_desc *desc, + struct tag *tags, char **cmdline, + struct meminfo *mi) +{ + if (tags != phys_to_virt(S3C2410_SDRAM_PA + 0x100)) { + mi->nr_banks=1; + mi->bank[0].start = 0x30000000; + mi->bank[0].size = SZ_64M; + mi->bank[0].node = 0; + } +} + +static void __init smdk2413_map_io(void) +{ + s3c24xx_init_io(smdk2413_iodesc, ARRAY_SIZE(smdk2413_iodesc)); + s3c24xx_init_clocks(12000000); + s3c24xx_init_uarts(smdk2413_uartcfgs, ARRAY_SIZE(smdk2413_uartcfgs)); + s3c24xx_set_board(&smdk2413_board); +} + +static void __init smdk2413_machine_init(void) +{ + smdk_machine_init(); +} + +MACHINE_START(S3C2413, "SMDK2413") + /* Maintainer: Ben Dooks <ben@fluff.org> */ + .phys_io = S3C2410_PA_UART, + .io_pg_offst = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc, + .boot_params = S3C2410_SDRAM_PA + 0x100, + + .fixup = smdk2413_fixup, + .init_irq = s3c24xx_init_irq, + .map_io = smdk2413_map_io, + .init_machine = smdk2413_machine_init, + .timer = &s3c24xx_timer, +MACHINE_END diff --git a/arch/arm/mach-s3c2410/pm-simtec.c b/arch/arm/mach-s3c2410/pm-simtec.c index 4c7ccef6c207..7b244566a436 100644 --- a/arch/arm/mach-s3c2410/pm-simtec.c +++ b/arch/arm/mach-s3c2410/pm-simtec.c @@ -48,7 +48,8 @@ static __init int pm_simtec_init(void) /* check which machine we are running on */ - if (!machine_is_bast() && !machine_is_vr1000() && !machine_is_anubis()) + if (!machine_is_bast() && !machine_is_vr1000() && + !machine_is_anubis() && !machine_is_osiris()) return 0; printk(KERN_INFO "Simtec Board Power Manangement" COPYRIGHT "\n"); diff --git a/arch/arm/mach-s3c2410/s3c2410-clock.c b/arch/arm/mach-s3c2410/s3c2410-clock.c index fd17c60e1132..99718663318e 100644 --- a/arch/arm/mach-s3c2410/s3c2410-clock.c +++ b/arch/arm/mach-s3c2410/s3c2410-clock.c @@ -182,7 +182,15 @@ static struct clk init_clocks[] = { .id = -1, .parent = &clk_p, .ctrlbit = 0, - } + }, { + .name = "usb-bus-host", + .id = -1, + .parent = &clk_usb_bus, + }, { + .name = "usb-bus-gadget", + .id = -1, + .parent = &clk_usb_bus, + }, }; /* s3c2410_baseclk_add() diff --git a/arch/arm/mach-s3c2410/s3c2410-gpio.c b/arch/arm/mach-s3c2410/s3c2410-gpio.c index d5e1caea1d23..471a71490010 100644 --- a/arch/arm/mach-s3c2410/s3c2410-gpio.c +++ b/arch/arm/mach-s3c2410/s3c2410-gpio.c @@ -18,9 +18,6 @@ * 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 - * - * Changelog - * 15-Jan-2006 LCVR Splitted from gpio.c */ #include <linux/kernel.h> @@ -38,7 +35,7 @@ int s3c2410_gpio_irqfilter(unsigned int pin, unsigned int on, unsigned int config) { - void __iomem *reg = S3C2410_EINFLT0; + void __iomem *reg = S3C24XX_EINFLT0; unsigned long flags; unsigned long val; @@ -47,7 +44,7 @@ int s3c2410_gpio_irqfilter(unsigned int pin, unsigned int on, config &= 0xff; - pin -= S3C2410_GPG8_EINT16; + pin -= S3C2410_GPG8; reg += pin & ~3; local_irq_save(flags); @@ -61,10 +58,10 @@ int s3c2410_gpio_irqfilter(unsigned int pin, unsigned int on, /* update filter enable */ - val = __raw_readl(S3C2410_EXTINT2); + val = __raw_readl(S3C24XX_EXTINT2); val &= ~(1 << ((pin * 4) + 3)); val |= on << ((pin * 4) + 3); - __raw_writel(val, S3C2410_EXTINT2); + __raw_writel(val, S3C24XX_EXTINT2); local_irq_restore(flags); @@ -75,7 +72,7 @@ EXPORT_SYMBOL(s3c2410_gpio_irqfilter); int s3c2410_gpio_getirq(unsigned int pin) { - if (pin < S3C2410_GPF0 || pin > S3C2410_GPG15_EINT23) + if (pin < S3C2410_GPF0 || pin > S3C2410_GPG15) return -1; /* not valid interrupts */ if (pin < S3C2410_GPG0 && pin > S3C2410_GPF7) diff --git a/arch/arm/mach-s3c2410/s3c2412-clock.c b/arch/arm/mach-s3c2410/s3c2412-clock.c new file mode 100644 index 000000000000..c95ed3e18580 --- /dev/null +++ b/arch/arm/mach-s3c2410/s3c2412-clock.c @@ -0,0 +1,711 @@ +/* linux/arch/arm/mach-s3c2410/s3c2412-clock.c + * + * Copyright (c) 2006 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * S3C2412,S3C2413 Clock control support + * + * 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/init.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/errno.h> +#include <linux/err.h> +#include <linux/sysdev.h> +#include <linux/clk.h> +#include <linux/mutex.h> +#include <linux/delay.h> + +#include <asm/hardware.h> +#include <asm/io.h> + +#include <asm/arch/regs-clock.h> +#include <asm/arch/regs-gpio.h> + +#include "clock.h" +#include "cpu.h" + +/* We currently have to assume that the system is running + * from the XTPll input, and that all ***REFCLKs are being + * fed from it, as we cannot read the state of OM[4] from + * software. + * + * It would be possible for each board initialisation to + * set the correct muxing at initialisation +*/ + +int s3c2412_clkcon_enable(struct clk *clk, int enable) +{ + unsigned int clocks = clk->ctrlbit; + unsigned long clkcon; + + clkcon = __raw_readl(S3C2410_CLKCON); + + if (enable) + clkcon |= clocks; + else + clkcon &= ~clocks; + + __raw_writel(clkcon, S3C2410_CLKCON); + + return 0; +} + +static int s3c2412_upll_enable(struct clk *clk, int enable) +{ + unsigned long upllcon = __raw_readl(S3C2410_UPLLCON); + unsigned long orig = upllcon; + + if (!enable) + upllcon |= S3C2412_PLLCON_OFF; + else + upllcon &= ~S3C2412_PLLCON_OFF; + + __raw_writel(upllcon, S3C2410_UPLLCON); + + /* allow ~150uS for the PLL to settle and lock */ + + if (enable && (orig & S3C2412_PLLCON_OFF)) + udelay(150); + + return 0; +} + +/* clock selections */ + +/* CPU EXTCLK input */ +static struct clk clk_ext = { + .name = "extclk", + .id = -1, +}; + +static struct clk clk_erefclk = { + .name = "erefclk", + .id = -1, +}; + +static struct clk clk_urefclk = { + .name = "urefclk", + .id = -1, +}; + +static int s3c2412_setparent_usysclk(struct clk *clk, struct clk *parent) +{ + unsigned long clksrc = __raw_readl(S3C2412_CLKSRC); + + if (parent == &clk_urefclk) + clksrc &= ~S3C2412_CLKSRC_USYSCLK_UPLL; + else if (parent == &clk_upll) + clksrc |= S3C2412_CLKSRC_USYSCLK_UPLL; + else + return -EINVAL; + + clk->parent = parent; + + __raw_writel(clksrc, S3C2412_CLKSRC); + return 0; +} + +static struct clk clk_usysclk = { + .name = "usysclk", + .id = -1, + .parent = &clk_xtal, + .set_parent = s3c2412_setparent_usysclk, +}; + +static struct clk clk_mrefclk = { + .name = "mrefclk", + .parent = &clk_xtal, + .id = -1, +}; + +static struct clk clk_mdivclk = { + .name = "mdivclk", + .parent = &clk_xtal, + .id = -1, +}; + +static int s3c2412_setparent_usbsrc(struct clk *clk, struct clk *parent) +{ + unsigned long clksrc = __raw_readl(S3C2412_CLKSRC); + + if (parent == &clk_usysclk) + clksrc &= ~S3C2412_CLKSRC_USBCLK_HCLK; + else if (parent == &clk_h) + clksrc |= S3C2412_CLKSRC_USBCLK_HCLK; + else + return -EINVAL; + + clk->parent = parent; + + __raw_writel(clksrc, S3C2412_CLKSRC); + return 0; +} + +static unsigned long s3c2412_roundrate_usbsrc(struct clk *clk, + unsigned long rate) +{ + unsigned long parent_rate = clk_get_rate(clk->parent); + int div; + + if (rate > parent_rate) + return parent_rate; + + div = parent_rate / rate; + if (div > 2) + div = 2; + + return parent_rate / div; +} + +static unsigned long s3c2412_getrate_usbsrc(struct clk *clk) +{ + unsigned long parent_rate = clk_get_rate(clk->parent); + unsigned long div = __raw_readl(S3C2410_CLKDIVN); + + return parent_rate / ((div & S3C2412_CLKDIVN_USB48DIV) ? 2 : 1); +} + +static int s3c2412_setrate_usbsrc(struct clk *clk, unsigned long rate) +{ + unsigned long parent_rate = clk_get_rate(clk->parent); + unsigned long clkdivn = __raw_readl(S3C2410_CLKDIVN); + + rate = s3c2412_roundrate_usbsrc(clk, rate); + + if ((parent_rate / rate) == 2) + clkdivn |= S3C2412_CLKDIVN_USB48DIV; + else + clkdivn &= ~S3C2412_CLKDIVN_USB48DIV; + + __raw_writel(clkdivn, S3C2410_CLKDIVN); + return 0; +} + +static struct clk clk_usbsrc = { + .name = "usbsrc", + .id = -1, + .get_rate = s3c2412_getrate_usbsrc, + .set_rate = s3c2412_setrate_usbsrc, + .round_rate = s3c2412_roundrate_usbsrc, + .set_parent = s3c2412_setparent_usbsrc, +}; + +static int s3c2412_setparent_msysclk(struct clk *clk, struct clk *parent) +{ + unsigned long clksrc = __raw_readl(S3C2412_CLKSRC); + + if (parent == &clk_mdivclk) + clksrc &= ~S3C2412_CLKSRC_MSYSCLK_MPLL; + else if (parent == &clk_upll) + clksrc |= S3C2412_CLKSRC_MSYSCLK_MPLL; + else + return -EINVAL; + + clk->parent = parent; + + __raw_writel(clksrc, S3C2412_CLKSRC); + return 0; +} + +static struct clk clk_msysclk = { + .name = "msysclk", + .id = -1, + .set_parent = s3c2412_setparent_msysclk, +}; + +/* these next clocks have an divider immediately after them, + * so we can register them with their divider and leave out the + * intermediate clock stage +*/ +static unsigned long s3c2412_roundrate_clksrc(struct clk *clk, + unsigned long rate) +{ + unsigned long parent_rate = clk_get_rate(clk->parent); + int div; + + if (rate > parent_rate) + return parent_rate; + + /* note, we remove the +/- 1 calculations as they cancel out */ + + div = (rate / parent_rate); + + if (div < 1) + div = 1; + else if (div > 16) + div = 16; + + return parent_rate / div; +} + +static int s3c2412_setparent_uart(struct clk *clk, struct clk *parent) +{ + unsigned long clksrc = __raw_readl(S3C2412_CLKSRC); + + if (parent == &clk_erefclk) + clksrc &= ~S3C2412_CLKSRC_UARTCLK_MPLL; + else if (parent == &clk_mpll) + clksrc |= S3C2412_CLKSRC_UARTCLK_MPLL; + else + return -EINVAL; + + clk->parent = parent; + + __raw_writel(clksrc, S3C2412_CLKSRC); + return 0; +} + +static unsigned long s3c2412_getrate_uart(struct clk *clk) +{ + unsigned long parent_rate = clk_get_rate(clk->parent); + unsigned long div = __raw_readl(S3C2410_CLKDIVN); + + div &= S3C2412_CLKDIVN_UARTDIV_MASK; + div >>= S3C2412_CLKDIVN_UARTDIV_SHIFT; + + return parent_rate / (div + 1); +} + +static int s3c2412_setrate_uart(struct clk *clk, unsigned long rate) +{ + unsigned long parent_rate = clk_get_rate(clk->parent); + unsigned long clkdivn = __raw_readl(S3C2410_CLKDIVN); + + rate = s3c2412_roundrate_clksrc(clk, rate); + + clkdivn &= ~S3C2412_CLKDIVN_UARTDIV_MASK; + clkdivn |= ((parent_rate / rate) - 1) << S3C2412_CLKDIVN_UARTDIV_SHIFT; + + __raw_writel(clkdivn, S3C2410_CLKDIVN); + return 0; +} + +static struct clk clk_uart = { + .name = "uartclk", + .id = -1, + .get_rate = s3c2412_getrate_uart, + .set_rate = s3c2412_setrate_uart, + .set_parent = s3c2412_setparent_uart, + .round_rate = s3c2412_roundrate_clksrc, +}; + +static int s3c2412_setparent_i2s(struct clk *clk, struct clk *parent) +{ + unsigned long clksrc = __raw_readl(S3C2412_CLKSRC); + + if (parent == &clk_erefclk) + clksrc &= ~S3C2412_CLKSRC_I2SCLK_MPLL; + else if (parent == &clk_mpll) + clksrc |= S3C2412_CLKSRC_I2SCLK_MPLL; + else + return -EINVAL; + + clk->parent = parent; + + __raw_writel(clksrc, S3C2412_CLKSRC); + return 0; +} + +static unsigned long s3c2412_getrate_i2s(struct clk *clk) +{ + unsigned long parent_rate = clk_get_rate(clk->parent); + unsigned long div = __raw_readl(S3C2410_CLKDIVN); + + div &= S3C2412_CLKDIVN_I2SDIV_MASK; + div >>= S3C2412_CLKDIVN_I2SDIV_SHIFT; + + return parent_rate / (div + 1); +} + +static int s3c2412_setrate_i2s(struct clk *clk, unsigned long rate) +{ + unsigned long parent_rate = clk_get_rate(clk->parent); + unsigned long clkdivn = __raw_readl(S3C2410_CLKDIVN); + + rate = s3c2412_roundrate_clksrc(clk, rate); + + clkdivn &= ~S3C2412_CLKDIVN_I2SDIV_MASK; + clkdivn |= ((parent_rate / rate) - 1) << S3C2412_CLKDIVN_I2SDIV_SHIFT; + + __raw_writel(clkdivn, S3C2410_CLKDIVN); + return 0; +} + +static struct clk clk_i2s = { + .name = "i2sclk", + .id = -1, + .get_rate = s3c2412_getrate_i2s, + .set_rate = s3c2412_setrate_i2s, + .set_parent = s3c2412_setparent_i2s, + .round_rate = s3c2412_roundrate_clksrc, +}; + +static int s3c2412_setparent_cam(struct clk *clk, struct clk *parent) +{ + unsigned long clksrc = __raw_readl(S3C2412_CLKSRC); + + if (parent == &clk_usysclk) + clksrc &= ~S3C2412_CLKSRC_CAMCLK_HCLK; + else if (parent == &clk_h) + clksrc |= S3C2412_CLKSRC_CAMCLK_HCLK; + else + return -EINVAL; + + clk->parent = parent; + + __raw_writel(clksrc, S3C2412_CLKSRC); + return 0; +} +static unsigned long s3c2412_getrate_cam(struct clk *clk) +{ + unsigned long parent_rate = clk_get_rate(clk->parent); + unsigned long div = __raw_readl(S3C2410_CLKDIVN); + + div &= S3C2412_CLKDIVN_CAMDIV_MASK; + div >>= S3C2412_CLKDIVN_CAMDIV_SHIFT; + + return parent_rate / (div + 1); +} + +static int s3c2412_setrate_cam(struct clk *clk, unsigned long rate) +{ + unsigned long parent_rate = clk_get_rate(clk->parent); + unsigned long clkdivn = __raw_readl(S3C2410_CLKDIVN); + + rate = s3c2412_roundrate_clksrc(clk, rate); + + clkdivn &= ~S3C2412_CLKDIVN_CAMDIV_MASK; + clkdivn |= ((parent_rate / rate) - 1) << S3C2412_CLKDIVN_CAMDIV_SHIFT; + + __raw_writel(clkdivn, S3C2410_CLKDIVN); + return 0; +} + +static struct clk clk_cam = { + .name = "camif-upll", /* same as 2440 name */ + .id = -1, + .get_rate = s3c2412_getrate_cam, + .set_rate = s3c2412_setrate_cam, + .set_parent = s3c2412_setparent_cam, + .round_rate = s3c2412_roundrate_clksrc, +}; + +/* standard clock definitions */ + +static struct clk init_clocks_disable[] = { + { + .name = "nand", + .id = -1, + .parent = &clk_h, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_NAND, + }, { + .name = "sdi", + .id = -1, + .parent = &clk_p, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_SDI, + }, { + .name = "adc", + .id = -1, + .parent = &clk_p, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_ADC, + }, { + .name = "i2c", + .id = -1, + .parent = &clk_p, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_IIC, + }, { + .name = "iis", + .id = -1, + .parent = &clk_p, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_IIS, + }, { + .name = "spi", + .id = -1, + .parent = &clk_p, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_SPI, + } +}; + +static struct clk init_clocks[] = { + { + .name = "dma", + .id = 0, + .parent = &clk_h, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_DMA0, + }, { + .name = "dma", + .id = 1, + .parent = &clk_h, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_DMA1, + }, { + .name = "dma", + .id = 2, + .parent = &clk_h, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_DMA2, + }, { + .name = "dma", + .id = 3, + .parent = &clk_h, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_DMA3, + }, { + .name = "lcd", + .id = -1, + .parent = &clk_h, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_LCDC, + }, { + .name = "gpio", + .id = -1, + .parent = &clk_p, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_GPIO, + }, { + .name = "usb-host", + .id = -1, + .parent = &clk_h, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_USBH, + }, { + .name = "usb-device", + .id = -1, + .parent = &clk_h, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_USBD, + }, { + .name = "timers", + .id = -1, + .parent = &clk_p, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_PWMT, + }, { + .name = "uart", + .id = 0, + .parent = &clk_p, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_UART0, + }, { + .name = "uart", + .id = 1, + .parent = &clk_p, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_UART1, + }, { + .name = "uart", + .id = 2, + .parent = &clk_p, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_UART2, + }, { + .name = "rtc", + .id = -1, + .parent = &clk_p, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_RTC, + }, { + .name = "watchdog", + .id = -1, + .parent = &clk_p, + .ctrlbit = 0, + }, { + .name = "usb-bus-gadget", + .id = -1, + .parent = &clk_usb_bus, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_USB_DEV48, + }, { + .name = "usb-bus-host", + .id = -1, + .parent = &clk_usb_bus, + .enable = s3c2412_clkcon_enable, + .ctrlbit = S3C2412_CLKCON_USB_HOST48, + } +}; + +/* clocks to add where we need to check their parentage */ + +struct clk_init { + struct clk *clk; + unsigned int bit; + struct clk *src_0; + struct clk *src_1; +}; + +struct clk_init clks_src[] __initdata = { + { + .clk = &clk_usysclk, + .bit = S3C2412_CLKSRC_USBCLK_HCLK, + .src_0 = &clk_urefclk, + .src_1 = &clk_upll, + }, { + .clk = &clk_i2s, + .bit = S3C2412_CLKSRC_I2SCLK_MPLL, + .src_0 = &clk_erefclk, + .src_1 = &clk_mpll, + }, { + .clk = &clk_cam, + .bit = S3C2412_CLKSRC_CAMCLK_HCLK, + .src_0 = &clk_usysclk, + .src_1 = &clk_h, + }, { + .clk = &clk_msysclk, + .bit = S3C2412_CLKSRC_MSYSCLK_MPLL, + .src_0 = &clk_mdivclk, + .src_1 = &clk_mpll, + }, { + .clk = &clk_uart, + .bit = S3C2412_CLKSRC_UARTCLK_MPLL, + .src_0 = &clk_erefclk, + .src_1 = &clk_mpll, + }, { + .clk = &clk_usbsrc, + .bit = S3C2412_CLKSRC_USBCLK_HCLK, + .src_0 = &clk_usysclk, + .src_1 = &clk_h, + }, +}; + +/* s3c2412_clk_initparents + * + * Initialise the parents for the clocks that we get at start-time +*/ + +static void __init s3c2412_clk_initparents(void) +{ + unsigned long clksrc = __raw_readl(S3C2412_CLKSRC); + struct clk_init *cip = clks_src; + struct clk *src; + int ptr; + int ret; + + for (ptr = 0; ptr < ARRAY_SIZE(clks_src); ptr++, cip++) { + ret = s3c24xx_register_clock(cip->clk); + if (ret < 0) { + printk(KERN_ERR "Failed to register clock %s (%d)\n", + cip->clk->name, ret); + } + + src = (clksrc & cip->bit) ? cip->src_1 : cip->src_0; + + printk(KERN_INFO "%s: parent %s\n", cip->clk->name, src->name); + clk_set_parent(cip->clk, src); + } +} + +/* clocks to add straight away */ + +struct clk *clks[] __initdata = { + &clk_ext, + &clk_usb_bus, + &clk_erefclk, + &clk_urefclk, + &clk_mrefclk, +}; + +int __init s3c2412_baseclk_add(void) +{ + unsigned long clkcon = __raw_readl(S3C2410_CLKCON); + struct clk *clkp; + int ret; + int ptr; + + clk_upll.enable = s3c2412_upll_enable; + clk_usb_bus.parent = &clk_usbsrc; + clk_usb_bus.rate = 0x0; + + s3c2412_clk_initparents(); + + for (ptr = 0; ptr < ARRAY_SIZE(clks); ptr++) { + clkp = clks[ptr]; + + ret = s3c24xx_register_clock(clkp); + if (ret < 0) { + printk(KERN_ERR "Failed to register clock %s (%d)\n", + clkp->name, ret); + } + } + + /* ensure usb bus clock is within correct rate of 48MHz */ + + if (clk_get_rate(&clk_usb_bus) != (48 * 1000 * 1000)) { + printk(KERN_INFO "Warning: USB bus clock not at 48MHz\n"); + + /* for the moment, let's use the UPLL, and see if we can + * get 48MHz */ + + clk_set_parent(&clk_usysclk, &clk_upll); + clk_set_parent(&clk_usbsrc, &clk_usysclk); + clk_set_rate(&clk_usbsrc, 48*1000*1000); + } + + printk("S3C2412: upll %s, %ld.%03ld MHz, usb-bus %ld.%03ld MHz\n", + (__raw_readl(S3C2410_UPLLCON) & S3C2412_PLLCON_OFF) ? "off":"on", + print_mhz(clk_get_rate(&clk_upll)), + print_mhz(clk_get_rate(&clk_usb_bus))); + + /* register clocks from clock array */ + + clkp = init_clocks; + for (ptr = 0; ptr < ARRAY_SIZE(init_clocks); ptr++, clkp++) { + /* ensure that we note the clock state */ + + clkp->usage = clkcon & clkp->ctrlbit ? 1 : 0; + + ret = s3c24xx_register_clock(clkp); + if (ret < 0) { + printk(KERN_ERR "Failed to register clock %s (%d)\n", + clkp->name, ret); + } + } + + /* We must be careful disabling the clocks we are not intending to + * be using at boot time, as subsytems such as the LCD which do + * their own DMA requests to the bus can cause the system to lockup + * if they where in the middle of requesting bus access. + * + * Disabling the LCD clock if the LCD is active is very dangerous, + * and therefore the bootloader should be careful to not enable + * the LCD clock if it is not needed. + */ + + /* install (and disable) the clocks we do not need immediately */ + + 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); + } + + s3c2412_clkcon_enable(clkp, 0); + } + + return 0; +} diff --git a/arch/arm/mach-s3c2410/s3c2412.c b/arch/arm/mach-s3c2410/s3c2412.c new file mode 100644 index 000000000000..e24ffd5e478b --- /dev/null +++ b/arch/arm/mach-s3c2410/s3c2412.c @@ -0,0 +1,195 @@ +/* linux/arch/arm/mach-s3c2410/s3c2412.c + * + * Copyright (c) 2006 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * http://armlinux.simtec.co.uk/. + * + * 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. + * + * Modifications: + * 16-May-2003 BJD Created initial version + * 16-Aug-2003 BJD Fixed header files and copyright, added URL + * 05-Sep-2003 BJD Moved to kernel v2.6 + * 18-Jan-2004 BJD Added serial port configuration + * 21-Aug-2004 BJD Added new struct s3c2410_board handler + * 28-Sep-2004 BJD Updates for new serial port bits + * 04-Nov-2004 BJD Updated UART configuration process + * 10-Jan-2005 BJD Removed s3c2410_clock_tick_rate + * 13-Aug-2005 DA Removed UART from initial I/O mappings +*/ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/interrupt.h> +#include <linux/list.h> +#include <linux/timer.h> +#include <linux/init.h> +#include <linux/sysdev.h> +#include <linux/platform_device.h> + +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <asm/mach/irq.h> + +#include <asm/hardware.h> +#include <asm/io.h> +#include <asm/irq.h> + +#include <asm/arch/regs-clock.h> +#include <asm/arch/regs-serial.h> +#include <asm/arch/regs-gpio.h> +#include <asm/arch/regs-gpioj.h> +#include <asm/arch/regs-dsc.h> + +#include "s3c2412.h" +#include "cpu.h" +#include "devs.h" +#include "clock.h" +#include "pm.h" + +#ifndef CONFIG_CPU_S3C2412_ONLY +void __iomem *s3c24xx_va_gpio2 = S3C24XX_VA_GPIO; +#endif + +/* Initial IO mappings */ + +static struct map_desc s3c2412_iodesc[] __initdata = { + IODESC_ENT(CLKPWR), + IODESC_ENT(LCD), + IODESC_ENT(TIMER), + IODESC_ENT(ADC), + IODESC_ENT(WATCHDOG), +}; + +/* uart registration process */ + +void __init s3c2412_init_uarts(struct s3c2410_uartcfg *cfg, int no) +{ + s3c24xx_init_uartdevs("s3c2412-uart", s3c2410_uart_resources, cfg, no); + + /* rename devices that are s3c2412/s3c2413 specific */ + s3c_device_sdi.name = "s3c2412-sdi"; + s3c_device_nand.name = "s3c2412-nand"; +} + +/* s3c2412_map_io + * + * register the standard cpu IO areas, and any passed in from the + * machine specific initialisation. +*/ + +void __init s3c2412_map_io(struct map_desc *mach_desc, int mach_size) +{ + /* move base of IO */ + + s3c24xx_va_gpio2 = S3C24XX_VA_GPIO + 0x10; + + /* register our io-tables */ + + iotable_init(s3c2412_iodesc, ARRAY_SIZE(s3c2412_iodesc)); + iotable_init(mach_desc, mach_size); +} + +void __init s3c2412_init_clocks(int xtal) +{ + unsigned long tmp; + unsigned long fclk; + unsigned long hclk; + unsigned long pclk; + + /* now we've got our machine bits initialised, work out what + * clocks we've got */ + + fclk = s3c2410_get_pll(__raw_readl(S3C2410_MPLLCON), xtal*2); + + tmp = __raw_readl(S3C2410_CLKDIVN); + + /* work out clock scalings */ + + hclk = fclk / ((tmp & S3C2412_CLKDIVN_HDIVN_MASK) + 1); + hclk /= ((tmp & S3C2421_CLKDIVN_ARMDIVN) ? 2 : 1); + pclk = hclk / ((tmp & S3C2412_CLKDIVN_PDIVN) ? 2 : 1); + + /* print brieft summary of clocks, etc */ + + printk("S3C2412: core %ld.%03ld MHz, memory %ld.%03ld MHz, peripheral %ld.%03ld MHz\n", + print_mhz(fclk), print_mhz(hclk), print_mhz(pclk)); + + /* initialise the clocks here, to allow other things like the + * console to use them + */ + + s3c24xx_setup_clocks(xtal, fclk, hclk, pclk); + s3c2412_baseclk_add(); +} + +/* need to register class before we actually register the device, and + * we also need to ensure that it has been initialised before any of the + * drivers even try to use it (even if not on an s3c2412 based system) + * as a driver which may support both 2410 and 2440 may try and use it. +*/ + +#ifdef CONFIG_PM +static struct sleep_save s3c2412_sleep[] = { + SAVE_ITEM(S3C2412_DSC0), + SAVE_ITEM(S3C2412_DSC1), + SAVE_ITEM(S3C2413_GPJDAT), + SAVE_ITEM(S3C2413_GPJCON), + SAVE_ITEM(S3C2413_GPJUP), + + /* save the sleep configuration anyway, just in case these + * get damaged during wakeup */ + + SAVE_ITEM(S3C2412_GPBSLPCON), + SAVE_ITEM(S3C2412_GPCSLPCON), + SAVE_ITEM(S3C2412_GPDSLPCON), + SAVE_ITEM(S3C2412_GPESLPCON), + SAVE_ITEM(S3C2412_GPFSLPCON), + SAVE_ITEM(S3C2412_GPGSLPCON), + SAVE_ITEM(S3C2412_GPHSLPCON), + SAVE_ITEM(S3C2413_GPJSLPCON), +}; + +static int s3c2412_suspend(struct sys_device *dev, pm_message_t state) +{ + s3c2410_pm_do_save(s3c2412_sleep, ARRAY_SIZE(s3c2412_sleep)); + return 0; +} + +static int s3c2412_resume(struct sys_device *dev) +{ + s3c2410_pm_do_restore(s3c2412_sleep, ARRAY_SIZE(s3c2412_sleep)); + return 0; +} + +#else +#define s3c2412_suspend NULL +#define s3c2412_resume NULL +#endif + +struct sysdev_class s3c2412_sysclass = { + set_kset_name("s3c2412-core"), + .suspend = s3c2412_suspend, + .resume = s3c2412_resume +}; + +static int __init s3c2412_core_init(void) +{ + return sysdev_class_register(&s3c2412_sysclass); +} + +core_initcall(s3c2412_core_init); + +static struct sys_device s3c2412_sysdev = { + .cls = &s3c2412_sysclass, +}; + +int __init s3c2412_init(void) +{ + printk("S3C2412: Initialising architecture\n"); + + return sysdev_register(&s3c2412_sysdev); +} diff --git a/arch/arm/mach-s3c2410/s3c2412.h b/arch/arm/mach-s3c2410/s3c2412.h new file mode 100644 index 000000000000..c6e56032a6e7 --- /dev/null +++ b/arch/arm/mach-s3c2410/s3c2412.h @@ -0,0 +1,29 @@ +/* arch/arm/mach-s3c2410/s3c2412.h + * + * Copyright (c) 2006 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * Header file for s3c2412 cpu 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. +*/ + +#ifdef CONFIG_CPU_S3C2412 + +extern int s3c2412_init(void); + +extern void s3c2412_map_io(struct map_desc *mach_desc, int size); + +extern void s3c2412_init_uarts(struct s3c2410_uartcfg *cfg, int no); + +extern void s3c2412_init_clocks(int xtal); + +extern int s3c2412_baseclk_add(void); +#else +#define s3c2412_init_clocks NULL +#define s3c2412_init_uarts NULL +#define s3c2412_map_io NULL +#define s3c2412_init NULL +#endif diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index 4221d054a1e9..ecf5e232a6fc 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -61,9 +61,9 @@ config CPU_ARM720T # ARM920T config CPU_ARM920T - bool "Support ARM920T processor" if !ARCH_S3C2410 - depends on ARCH_EP93XX || ARCH_INTEGRATOR || ARCH_S3C2410 || ARCH_IMX || ARCH_AAEC2000 || ARCH_AT91RM9200 - default y if ARCH_S3C2410 || ARCH_AT91RM9200 + bool "Support ARM920T processor" + depends on ARCH_EP93XX || ARCH_INTEGRATOR || CPU_S3C2410 || CPU_S3C2440 || CPU_S3C2442 || ARCH_IMX || ARCH_AAEC2000 || ARCH_AT91RM9200 + default y if CPU_S3C2410 || CPU_S3C2440 || CPU_S3C2442 || ARCH_AT91RM9200 select CPU_32v4 select CPU_ABRT_EV4T select CPU_CACHE_V4WT @@ -121,8 +121,8 @@ config CPU_ARM925T # ARM926T config CPU_ARM926T bool "Support ARM926T processor" - depends on ARCH_INTEGRATOR || ARCH_VERSATILE_PB || MACH_VERSATILE_AB || ARCH_OMAP730 || ARCH_OMAP16XX || MACH_REALVIEW_EB || ARCH_PNX4008 || ARCH_NETX - default y if ARCH_VERSATILE_PB || MACH_VERSATILE_AB || ARCH_OMAP730 || ARCH_OMAP16XX || ARCH_PNX4008 || ARCH_NETX + depends on ARCH_INTEGRATOR || ARCH_VERSATILE_PB || MACH_VERSATILE_AB || ARCH_OMAP730 || ARCH_OMAP16XX || MACH_REALVIEW_EB || ARCH_PNX4008 || ARCH_NETX || CPU_S3C2412 + default y if ARCH_VERSATILE_PB || MACH_VERSATILE_AB || ARCH_OMAP730 || ARCH_OMAP16XX || ARCH_PNX4008 || ARCH_NETX || CPU_S3C2412 select CPU_32v5 select CPU_ABRT_EV5TJ select CPU_CACHE_VIVT |