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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-14 17:48:14 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-14 17:48:14 -0700 |
commit | 2ca7d674d7ab2220707b2ada0b690c0e7c95e7ac (patch) | |
tree | 9c0927ed1d540e5fd704c1f82689870786514655 /arch/arm/mach-w90x900/cpu.c | |
parent | 2195d2818c37bdf263865f1e9effccdd9fc5f9d4 (diff) | |
parent | 87d721ad7a37b7650dd710c88dd5c6a5bf9fe996 (diff) | |
download | op-kernel-dev-2ca7d674d7ab2220707b2ada0b690c0e7c95e7ac.zip op-kernel-dev-2ca7d674d7ab2220707b2ada0b690c0e7c95e7ac.tar.gz |
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (257 commits)
[ARM] Update mach-types
ARM: 5636/1: Move vendor enum to AMBA include
ARM: Fix pfn_valid() for sparse memory
[ARM] orion5x: Add LaCie NAS 2Big Network support
[ARM] pxa/sharpsl_pm: zaurus c3000 aka spitz: fix resume
ARM: 5686/1: at91: Correct AC97 reset line in at91sam9263ek board
ARM: 5640/1: This patch modifies the support of AC97 on the at91sam9263 ek board
ARM: 5689/1: Update default config of HP Jornada 700-series machines
ARM: 5691/1: fix cache aliasing issues between kmap() and kmap_atomic() with highmem
ARM: 5688/1: ks8695_serial: disable_irq() lockup
ARM: 5687/1: fix an oops with highmem
ARM: 5684/1: Add nuc960 platform to w90x900
ARM: 5683/1: Add nuc950 platform to w90x900
ARM: 5682/1: Add cpu.c and dev.c and modify some files of w90p910 platform
ARM: 5626/1: add suspend/resume functions to amba-pl011 serial driver
ARM: 5625/1: fix hard coded 4K resource size in amba bus detection
MMC: MMCI: convert realview MMC to use gpiolib
ARM: 5685/1: Make MMCI driver compile without gpiolib
ARM: implement highpte
ARM: Show FIQ in /proc/interrupts on CONFIG_FIQ
...
Fix up trivial conflict in arch/arm/kernel/signal.c.
It was due to the TIF_NOTIFY_RESUME addition in commit d0420c83f ("KEYS:
Extend TIF_NOTIFY_RESUME to (almost) all architectures") and follow-ups.
Diffstat (limited to 'arch/arm/mach-w90x900/cpu.c')
-rw-r--r-- | arch/arm/mach-w90x900/cpu.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/arch/arm/mach-w90x900/cpu.c b/arch/arm/mach-w90x900/cpu.c new file mode 100644 index 0000000..921cef9 --- /dev/null +++ b/arch/arm/mach-w90x900/cpu.c @@ -0,0 +1,212 @@ +/* + * linux/arch/arm/mach-w90x900/cpu.c + * + * Copyright (c) 2009 Nuvoton corporation. + * + * Wan ZongShun <mcuos.com@gmail.com> + * + * NUC900 series cpu common 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;version 2 of the License. + * + */ + +#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 <linux/io.h> +#include <linux/serial_8250.h> +#include <linux/delay.h> + +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <asm/mach/irq.h> +#include <asm/irq.h> + +#include <mach/hardware.h> +#include <mach/regs-serial.h> +#include <mach/regs-clock.h> +#include <mach/regs-ebi.h> + +#include "cpu.h" +#include "clock.h" + +/* Initial IO mappings */ + +static struct map_desc nuc900_iodesc[] __initdata = { + IODESC_ENT(IRQ), + IODESC_ENT(GCR), + IODESC_ENT(UART), + IODESC_ENT(TIMER), + IODESC_ENT(EBI), +}; + +/* Initial clock declarations. */ +static DEFINE_CLK(lcd, 0); +static DEFINE_CLK(audio, 1); +static DEFINE_CLK(fmi, 4); +static DEFINE_SUBCLK(ms, 0); +static DEFINE_SUBCLK(sd, 1); +static DEFINE_CLK(dmac, 5); +static DEFINE_CLK(atapi, 6); +static DEFINE_CLK(emc, 7); +static DEFINE_SUBCLK(rmii, 2); +static DEFINE_CLK(usbd, 8); +static DEFINE_CLK(usbh, 9); +static DEFINE_CLK(g2d, 10);; +static DEFINE_CLK(pwm, 18); +static DEFINE_CLK(ps2, 24); +static DEFINE_CLK(kpi, 25); +static DEFINE_CLK(wdt, 26); +static DEFINE_CLK(gdma, 27); +static DEFINE_CLK(adc, 28); +static DEFINE_CLK(usi, 29); +static DEFINE_CLK(ext, 0); + +static struct clk_lookup nuc900_clkregs[] = { + DEF_CLKLOOK(&clk_lcd, "nuc900-lcd", NULL), + DEF_CLKLOOK(&clk_audio, "nuc900-audio", NULL), + DEF_CLKLOOK(&clk_fmi, "nuc900-fmi", NULL), + DEF_CLKLOOK(&clk_ms, "nuc900-fmi", "MS"), + DEF_CLKLOOK(&clk_sd, "nuc900-fmi", "SD"), + DEF_CLKLOOK(&clk_dmac, "nuc900-dmac", NULL), + DEF_CLKLOOK(&clk_atapi, "nuc900-atapi", NULL), + DEF_CLKLOOK(&clk_emc, "nuc900-emc", NULL), + DEF_CLKLOOK(&clk_rmii, "nuc900-emc", "RMII"), + DEF_CLKLOOK(&clk_usbd, "nuc900-usbd", NULL), + DEF_CLKLOOK(&clk_usbh, "nuc900-usbh", NULL), + DEF_CLKLOOK(&clk_g2d, "nuc900-g2d", NULL), + DEF_CLKLOOK(&clk_pwm, "nuc900-pwm", NULL), + DEF_CLKLOOK(&clk_ps2, "nuc900-ps2", NULL), + DEF_CLKLOOK(&clk_kpi, "nuc900-kpi", NULL), + DEF_CLKLOOK(&clk_wdt, "nuc900-wdt", NULL), + DEF_CLKLOOK(&clk_gdma, "nuc900-gdma", NULL), + DEF_CLKLOOK(&clk_adc, "nuc900-adc", NULL), + DEF_CLKLOOK(&clk_usi, "nuc900-spi", NULL), + DEF_CLKLOOK(&clk_ext, NULL, "ext"), +}; + +/* Initial serial platform data */ + +struct plat_serial8250_port nuc900_uart_data[] = { + NUC900_8250PORT(UART0), +}; + +struct platform_device nuc900_serial_device = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM, + .dev = { + .platform_data = nuc900_uart_data, + }, +}; + +/*Set NUC900 series cpu frequence*/ +static int __init nuc900_set_clkval(unsigned int cpufreq) +{ + unsigned int pllclk, ahbclk, apbclk, val; + + pllclk = 0; + ahbclk = 0; + apbclk = 0; + + switch (cpufreq) { + case 66: + pllclk = PLL_66MHZ; + ahbclk = AHB_CPUCLK_1_1; + apbclk = APB_AHB_1_2; + break; + + case 100: + pllclk = PLL_100MHZ; + ahbclk = AHB_CPUCLK_1_1; + apbclk = APB_AHB_1_2; + break; + + case 120: + pllclk = PLL_120MHZ; + ahbclk = AHB_CPUCLK_1_2; + apbclk = APB_AHB_1_2; + break; + + case 166: + pllclk = PLL_166MHZ; + ahbclk = AHB_CPUCLK_1_2; + apbclk = APB_AHB_1_2; + break; + + case 200: + pllclk = PLL_200MHZ; + ahbclk = AHB_CPUCLK_1_2; + apbclk = APB_AHB_1_2; + break; + } + + __raw_writel(pllclk, REG_PLLCON0); + + val = __raw_readl(REG_CLKDIV); + val &= ~(0x03 << 24 | 0x03 << 26); + val |= (ahbclk << 24 | apbclk << 26); + __raw_writel(val, REG_CLKDIV); + + return 0; +} +static int __init nuc900_set_cpufreq(char *str) +{ + unsigned long cpufreq, val; + + if (!*str) + return 0; + + strict_strtoul(str, 0, &cpufreq); + + nuc900_clock_source(NULL, "ext"); + + nuc900_set_clkval(cpufreq); + + mdelay(1); + + val = __raw_readl(REG_CKSKEW); + val &= ~0xff; + val |= DEFAULTSKEW; + __raw_writel(val, REG_CKSKEW); + + nuc900_clock_source(NULL, "pll0"); + + return 1; +} + +__setup("cpufreq=", nuc900_set_cpufreq); + +/*Init NUC900 evb io*/ + +void __init nuc900_map_io(struct map_desc *mach_desc, int mach_size) +{ + unsigned long idcode = 0x0; + + iotable_init(mach_desc, mach_size); + iotable_init(nuc900_iodesc, ARRAY_SIZE(nuc900_iodesc)); + + idcode = __raw_readl(NUC900PDID); + if (idcode == NUC910_CPUID) + printk(KERN_INFO "CPU type 0x%08lx is NUC910\n", idcode); + else if (idcode == NUC920_CPUID) + printk(KERN_INFO "CPU type 0x%08lx is NUC920\n", idcode); + else if (idcode == NUC950_CPUID) + printk(KERN_INFO "CPU type 0x%08lx is NUC950\n", idcode); + else if (idcode == NUC960_CPUID) + printk(KERN_INFO "CPU type 0x%08lx is NUC960\n", idcode); +} + +/*Init NUC900 clock*/ + +void __init nuc900_init_clocks(void) +{ + clks_register(nuc900_clkregs, ARRAY_SIZE(nuc900_clkregs)); +} + |