diff options
29 files changed, 2445 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h b/arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h new file mode 100644 index 000000000000..7f3e3f9bd23a --- /dev/null +++ b/arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h @@ -0,0 +1,72 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2003, 2004 Chris Dearman + * Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org) + */ +#ifndef __ASM_MACH_MIPS_CPU_FEATURE_OVERRIDES_H +#define __ASM_MACH_MIPS_CPU_FEATURE_OVERRIDES_H + + +/* + * CPU feature overrides for MIPS boards + */ +#ifdef CONFIG_CPU_MIPS32 +#define cpu_has_tlb 1 +#define cpu_has_4kex 1 +#define cpu_has_4k_cache 1 +/* #define cpu_has_fpu ? */ +/* #define cpu_has_32fpr ? */ +#define cpu_has_counter 1 +/* #define cpu_has_watch ? */ +#define cpu_has_divec 1 +#define cpu_has_vce 0 +/* #define cpu_has_cache_cdex_p ? */ +/* #define cpu_has_cache_cdex_s ? */ +/* #define cpu_has_prefetch ? */ +#define cpu_has_mcheck 1 +/* #define cpu_has_ejtag ? */ +#ifdef CONFIG_CPU_HAS_LLSC +#define cpu_has_llsc 1 +#else +#define cpu_has_llsc 0 +#endif +/* #define cpu_has_vtag_icache ? */ +/* #define cpu_has_dc_aliases ? */ +/* #define cpu_has_ic_fills_f_dc ? */ +#define cpu_has_nofpuex 0 +/* #define cpu_has_64bits ? */ +/* #define cpu_has_64bit_zero_reg ? */ +/* #define cpu_has_inclusive_pcaches ? */ +#define cpu_icache_snoops_remote_store 1 +#endif + +#ifdef CONFIG_CPU_MIPS64 +#define cpu_has_tlb 1 +#define cpu_has_4kex 1 +#define cpu_has_4k_cache 1 +/* #define cpu_has_fpu ? */ +/* #define cpu_has_32fpr ? */ +#define cpu_has_counter 1 +/* #define cpu_has_watch ? */ +#define cpu_has_divec 1 +#define cpu_has_vce 0 +/* #define cpu_has_cache_cdex_p ? */ +/* #define cpu_has_cache_cdex_s ? */ +/* #define cpu_has_prefetch ? */ +#define cpu_has_mcheck 1 +/* #define cpu_has_ejtag ? */ +#define cpu_has_llsc 1 +/* #define cpu_has_vtag_icache ? */ +/* #define cpu_has_dc_aliases ? */ +/* #define cpu_has_ic_fills_f_dc ? */ +#define cpu_has_nofpuex 0 +/* #define cpu_has_64bits ? */ +/* #define cpu_has_64bit_zero_reg ? */ +/* #define cpu_has_inclusive_pcaches ? */ +#define cpu_icache_snoops_remote_store 1 +#endif + +#endif /* __ASM_MACH_MIPS_CPU_FEATURE_OVERRIDES_H */ diff --git a/arch/mips/include/asm/mach-sead3/irq.h b/arch/mips/include/asm/mach-sead3/irq.h new file mode 100644 index 000000000000..652ea4c38cda --- /dev/null +++ b/arch/mips/include/asm/mach-sead3/irq.h @@ -0,0 +1,9 @@ +#ifndef __ASM_MACH_MIPS_IRQ_H +#define __ASM_MACH_MIPS_IRQ_H + +#define NR_IRQS 256 + + +#include_next <irq.h> + +#endif /* __ASM_MACH_MIPS_IRQ_H */ diff --git a/arch/mips/include/asm/mach-sead3/kernel-entry-init.h b/arch/mips/include/asm/mach-sead3/kernel-entry-init.h new file mode 100644 index 000000000000..3dfbd8e7947f --- /dev/null +++ b/arch/mips/include/asm/mach-sead3/kernel-entry-init.h @@ -0,0 +1,52 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Chris Dearman (chris@mips.com) + * Copyright (C) 2007 Mips Technologies, Inc. + */ +#ifndef __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H +#define __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H + + .macro kernel_entry_setup +#ifdef CONFIG_MIPS_MT_SMTC + mfc0 t0, CP0_CONFIG + bgez t0, 9f + mfc0 t0, CP0_CONFIG, 1 + bgez t0, 9f + mfc0 t0, CP0_CONFIG, 2 + bgez t0, 9f + mfc0 t0, CP0_CONFIG, 3 + and t0, 1<<2 + bnez t0, 0f +9 : + /* Assume we came from YAMON... */ + PTR_LA v0, 0x9fc00534 /* YAMON print */ + lw v0, (v0) + move a0, zero + PTR_LA a1, nonmt_processor + jal v0 + + PTR_LA v0, 0x9fc00520 /* YAMON exit */ + lw v0, (v0) + li a0, 1 + jal v0 + +1 : b 1b + + __INITDATA +nonmt_processor : + .asciz "SMTC kernel requires the MT ASE to run\n" + __FINIT +0 : +#endif + .endm + +/* + * Do SMP slave processor setup necessary before we can safely execute C code. + */ + .macro smp_slave_setup + .endm + +#endif /* __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H */ diff --git a/arch/mips/include/asm/mach-sead3/war.h b/arch/mips/include/asm/mach-sead3/war.h new file mode 100644 index 000000000000..7c6931d5f45f --- /dev/null +++ b/arch/mips/include/asm/mach-sead3/war.h @@ -0,0 +1,25 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2002, 2004, 2007 by Ralf Baechle <ralf@linux-mips.org> + */ +#ifndef __ASM_MIPS_MACH_MIPS_WAR_H +#define __ASM_MIPS_MACH_MIPS_WAR_H + +#define R4600_V1_INDEX_ICACHEOP_WAR 0 +#define R4600_V1_HIT_CACHEOP_WAR 0 +#define R4600_V2_HIT_CACHEOP_WAR 0 +#define R5432_CP0_INTERRUPT_WAR 0 +#define BCM1250_M3_WAR 0 +#define SIBYTE_1956_WAR 0 +#define MIPS4K_ICACHE_REFILL_WAR 1 +#define MIPS_CACHE_SYNC_WAR 1 +#define TX49XX_ICACHE_INDEX_INV_WAR 0 +#define RM9000_CDEX_SMP_WAR 0 +#define ICACHE_REFILLS_WORKAROUND_WAR 1 +#define R10000_LLSC_WAR 0 +#define MIPS34K_MISSED_ITLB_WAR 0 + +#endif /* __ASM_MIPS_MACH_MIPS_WAR_H */ diff --git a/arch/mips/include/asm/mips-boards/sead3int.h b/arch/mips/include/asm/mips-boards/sead3int.h new file mode 100644 index 000000000000..d634d9a807f6 --- /dev/null +++ b/arch/mips/include/asm/mips-boards/sead3int.h @@ -0,0 +1,19 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2000,2012 MIPS Technologies, Inc. All rights reserved. + * Douglas Leung <douglas@mips.com> + * Steven J. Hill <sjhill@mips.com> + */ +#ifndef _MIPS_SEAD3INT_H +#define _MIPS_SEAD3INT_H + +/* SEAD-3 GIC address space definitions. */ +#define GIC_BASE_ADDR 0x1b1c0000 +#define GIC_ADDRSPACE_SZ (128 * 1024) + +#define MIPS_GIC_IRQ_BASE (MIPS_CPU_IRQ_BASE + 0) + +#endif /* !(_MIPS_SEAD3INT_H) */ diff --git a/arch/mips/mti-sead3/Makefile b/arch/mips/mti-sead3/Makefile new file mode 100644 index 000000000000..626afeac4386 --- /dev/null +++ b/arch/mips/mti-sead3/Makefile @@ -0,0 +1,19 @@ +# +# Carsten Langgaard, carstenl@mips.com +# Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. +# +# Copyright (C) 2008 Wind River Systems, Inc. +# written by Ralf Baechle <ralf@linux-mips.org> +# +obj-y := sead3-lcd.o sead3-cmdline.o \ + sead3-display.o sead3-init.o sead3-int.o \ + sead3-mtd.o sead3-net.o \ + sead3-memory.o sead3-platform.o \ + sead3-reset.o sead3-setup.o sead3-time.o + +obj-y += sead3-i2c-dev.o sead3-i2c.o \ + sead3-pic32-i2c-drv.o sead3-pic32-bus.o \ + leds-sead3.o sead3-leds.o + +obj-$(CONFIG_EARLY_PRINTK) += sead3-console.o +obj-$(CONFIG_USB_EHCI_HCD) += sead3-ehci.o diff --git a/arch/mips/mti-sead3/Platform b/arch/mips/mti-sead3/Platform new file mode 100644 index 000000000000..387092427145 --- /dev/null +++ b/arch/mips/mti-sead3/Platform @@ -0,0 +1,7 @@ +# +# MIPS SEAD-3 board +# +platform-$(CONFIG_MIPS_SEAD3) += mti-sead3/ +cflags-$(CONFIG_MIPS_SEAD3) += -I$(srctree)/arch/mips/include/asm/mach-sead3 +load-$(CONFIG_MIPS_SEAD3) += 0xffffffff80100000 +all-$(CONFIG_MIPS_SEAD3) := $(COMPRESSION_FNAME).srec diff --git a/arch/mips/mti-sead3/leds-sead3.c b/arch/mips/mti-sead3/leds-sead3.c new file mode 100644 index 000000000000..a95ac5985206 --- /dev/null +++ b/arch/mips/mti-sead3/leds-sead3.c @@ -0,0 +1,128 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/leds.h> +#include <linux/err.h> +#include <linux/io.h> + +#define DRVNAME "sead3-led" + +static struct platform_device *pdev; + +static void sead3_pled_set(struct led_classdev *led_cdev, + enum led_brightness value) +{ + pr_debug("sead3_pled_set\n"); + writel(value, (void __iomem *)0xBF000210); /* FIXME */ +} + +static void sead3_fled_set(struct led_classdev *led_cdev, + enum led_brightness value) +{ + pr_debug("sead3_fled_set\n"); + writel(value, (void __iomem *)0xBF000218); /* FIXME */ +} + +static struct led_classdev sead3_pled = { + .name = "sead3::pled", + .brightness_set = sead3_pled_set, +}; + +static struct led_classdev sead3_fled = { + .name = "sead3::fled", + .brightness_set = sead3_fled_set, +}; + +#ifdef CONFIG_PM +static int sead3_led_suspend(struct platform_device *dev, + pm_message_t state) +{ + led_classdev_suspend(&sead3_pled); + led_classdev_suspend(&sead3_fled); + return 0; +} + +static int sead3_led_resume(struct platform_device *dev) +{ + led_classdev_resume(&sead3_pled); + led_classdev_resume(&sead3_fled); + return 0; +} +#else +#define sead3_led_suspend NULL +#define sead3_led_resume NULL +#endif + +static int sead3_led_probe(struct platform_device *pdev) +{ + int ret; + + ret = led_classdev_register(&pdev->dev, &sead3_pled); + if (ret < 0) + return ret; + + ret = led_classdev_register(&pdev->dev, &sead3_fled); + if (ret < 0) + led_classdev_unregister(&sead3_pled); + + return ret; +} + +static int sead3_led_remove(struct platform_device *pdev) +{ + led_classdev_unregister(&sead3_pled); + led_classdev_unregister(&sead3_fled); + return 0; +} + +static struct platform_driver sead3_led_driver = { + .probe = sead3_led_probe, + .remove = sead3_led_remove, + .suspend = sead3_led_suspend, + .resume = sead3_led_resume, + .driver = { + .name = DRVNAME, + .owner = THIS_MODULE, + }, +}; + +static int __init sead3_led_init(void) +{ + int ret; + + ret = platform_driver_register(&sead3_led_driver); + if (ret < 0) + goto out; + + pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0); + if (IS_ERR(pdev)) { + ret = PTR_ERR(pdev); + platform_driver_unregister(&sead3_led_driver); + goto out; + } + +out: + return ret; +} + +static void __exit sead3_led_exit(void) +{ + platform_device_unregister(pdev); + platform_driver_unregister(&sead3_led_driver); +} + +module_init(sead3_led_init); +module_exit(sead3_led_exit); + +MODULE_AUTHOR("Kristian Kielhofner <kris@krisk.org>"); +MODULE_DESCRIPTION("SEAD3 LED driver"); +MODULE_LICENSE("GPL"); + diff --git a/arch/mips/mti-sead3/sead3-cmdline.c b/arch/mips/mti-sead3/sead3-cmdline.c new file mode 100644 index 000000000000..a2e6cec67f57 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-cmdline.c @@ -0,0 +1,46 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/init.h> +#include <linux/string.h> + +#include <asm/bootinfo.h> + +extern int prom_argc; +extern int *_prom_argv; + +/* + * YAMON (32-bit PROM) pass arguments and environment as 32-bit pointer. + * This macro take care of sign extension. + */ +#define prom_argv(index) ((char *)(long)_prom_argv[(index)]) + +char * __init prom_getcmdline(void) +{ + return &(arcs_cmdline[0]); +} + +void __init prom_init_cmdline(void) +{ + char *cp; + int actr; + + actr = 1; /* Always ignore argv[0] */ + + cp = &(arcs_cmdline[0]); + while (actr < prom_argc) { + strcpy(cp, prom_argv(actr)); + cp += strlen(prom_argv(actr)); + *cp++ = ' '; + actr++; + } + if (cp != &(arcs_cmdline[0])) { + /* get rid of trailing space */ + --cp; + *cp = '\0'; + } +} diff --git a/arch/mips/mti-sead3/sead3-console.c b/arch/mips/mti-sead3/sead3-console.c new file mode 100644 index 000000000000..b36739108a0f --- /dev/null +++ b/arch/mips/mti-sead3/sead3-console.c @@ -0,0 +1,46 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/init.h> +#include <linux/console.h> +#include <linux/serial_reg.h> +#include <linux/io.h> + +#define SEAD_UART1_REGS_BASE 0xbf000800 /* ttyS1 = DB9 port */ +#define SEAD_UART0_REGS_BASE 0xbf000900 /* ttyS0 = USB port */ +#define PORT(base_addr, offset) ((unsigned int __iomem *)(base_addr+(offset)*4)) + +static char console_port = 1; + +static inline unsigned int serial_in(int offset, unsigned int base_addr) +{ + return __raw_readl(PORT(base_addr, offset)) & 0xff; +} + +static inline void serial_out(int offset, int value, unsigned int base_addr) +{ + __raw_writel(value, PORT(base_addr, offset)); +} + +void __init prom_init_early_console(char port) +{ + console_port = port; +} + +int prom_putchar(char c) +{ + unsigned int base_addr; + + base_addr = console_port ? SEAD_UART1_REGS_BASE : SEAD_UART0_REGS_BASE; + + while ((serial_in(UART_LSR, base_addr) & UART_LSR_THRE) == 0) + ; + + serial_out(UART_TX, c, base_addr); + + return 1; +} diff --git a/arch/mips/mti-sead3/sead3-display.c b/arch/mips/mti-sead3/sead3-display.c new file mode 100644 index 000000000000..8308c7fc188a --- /dev/null +++ b/arch/mips/mti-sead3/sead3-display.c @@ -0,0 +1,78 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/timer.h> +#include <linux/io.h> +#include <asm/mips-boards/generic.h> +#include <asm/mips-boards/prom.h> + +static unsigned int display_count; +static unsigned int max_display_count; + +#define LCD_DISPLAY_POS_BASE 0x1f000400 +#define DISPLAY_LCDINSTRUCTION (0*2) +#define DISPLAY_LCDDATA (1*2) +#define DISPLAY_CPLDSTATUS (2*2) +#define DISPLAY_CPLDDATA (3*2) +#define LCD_SETDDRAM 0x80 +#define LCD_IR_BF 0x80 + +const char display_string[] = " LINUX ON SEAD3 "; + +static void scroll_display_message(unsigned long data); +static DEFINE_TIMER(mips_scroll_timer, scroll_display_message, HZ, 0); + +static void lcd_wait(unsigned int __iomem *display) +{ + /* Wait for CPLD state machine to become idle. */ + do { } while (__raw_readl(display + DISPLAY_CPLDSTATUS) & 1); + + do { + __raw_readl(display + DISPLAY_LCDINSTRUCTION); + + /* Wait for CPLD state machine to become idle. */ + do { } while (__raw_readl(display + DISPLAY_CPLDSTATUS) & 1); + } while (__raw_readl(display + DISPLAY_CPLDDATA) & LCD_IR_BF); +} + +void mips_display_message(const char *str) +{ + static unsigned int __iomem *display; + char ch; + int i; + + if (unlikely(display == NULL)) + display = ioremap_nocache(LCD_DISPLAY_POS_BASE, + (8 * sizeof(int))); + + for (i = 0; i < 16; i++) { + if (*str) + ch = *str++; + else + ch = ' '; + lcd_wait(display); + __raw_writel((LCD_SETDDRAM | i), + (display + DISPLAY_LCDINSTRUCTION)); + lcd_wait(display); + __raw_writel(ch, display + DISPLAY_LCDDATA); + } +} + +static void scroll_display_message(unsigned long data) +{ + mips_display_message(&display_string[display_count++]); + if (display_count == max_display_count) + display_count = 0; + mod_timer(&mips_scroll_timer, jiffies + HZ); +} + +void mips_scroll_message(void) +{ + del_timer_sync(&mips_scroll_timer); + max_display_count = strlen(display_string) + 1 - 16; + mod_timer(&mips_scroll_timer, jiffies + 1); +} diff --git a/arch/mips/mti-sead3/sead3-ehci.c b/arch/mips/mti-sead3/sead3-ehci.c new file mode 100644 index 000000000000..772fc056a92d --- /dev/null +++ b/arch/mips/mti-sead3/sead3-ehci.c @@ -0,0 +1,47 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/module.h> +#include <linux/irq.h> +#include <linux/dma-mapping.h> +#include <linux/platform_device.h> + +struct resource ehci_resources[] = { + { + .start = 0x1b200000, + .end = 0x1b200fff, + .flags = IORESOURCE_MEM + }, + { + .start = MIPS_CPU_IRQ_BASE + 2, + .flags = IORESOURCE_IRQ + } +}; + +u64 sead3_usbdev_dma_mask = DMA_BIT_MASK(32); + +static struct platform_device ehci_device = { + .name = "sead3-ehci", + .id = 0, + .dev = { + .dma_mask = &sead3_usbdev_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32) + }, + .num_resources = ARRAY_SIZE(ehci_resources), + .resource = ehci_resources +}; + +static int __init ehci_init(void) +{ + return platform_device_register(&ehci_device); +} + +module_init(ehci_init); + +MODULE_AUTHOR("Chris Dearman <chris@mips.com>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("EHCI probe driver for SEAD3"); diff --git a/arch/mips/mti-sead3/sead3-i2c-dev.c b/arch/mips/mti-sead3/sead3-i2c-dev.c new file mode 100644 index 000000000000..eca0b53a71dd --- /dev/null +++ b/arch/mips/mti-sead3/sead3-i2c-dev.c @@ -0,0 +1,33 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/init.h> +#include <linux/i2c.h> + +static struct i2c_board_info __initdata sead3_i2c_devices[] = { + { + I2C_BOARD_INFO("adt7476", 0x2c), + .irq = 0, + }, + { + I2C_BOARD_INFO("m41t80", 0x68), + .irq = 0, + }, +}; + +static int __init sead3_i2c_init(void) +{ + int err; + + err = i2c_register_board_info(0, sead3_i2c_devices, + ARRAY_SIZE(sead3_i2c_devices)); + if (err < 0) + pr_err("sead3-i2c-dev: cannot register board I2C devices\n"); + return err; +} + +arch_initcall(sead3_i2c_init); diff --git a/arch/mips/mti-sead3/sead3-i2c-drv.c b/arch/mips/mti-sead3/sead3-i2c-drv.c new file mode 100644 index 000000000000..0375ee66bca3 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-i2c-drv.c @@ -0,0 +1,405 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/init.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/i2c.h> +#include <linux/platform_device.h> + +#define PIC32_I2CxCON 0x0000 +#define PIC32_I2CCON_ON (1<<15) +#define PIC32_I2CCON_ACKDT (1<<5) +#define PIC32_I2CCON_ACKEN (1<<4) +#define PIC32_I2CCON_RCEN (1<<3) +#define PIC32_I2CCON_PEN (1<<2) +#define PIC32_I2CCON_RSEN (1<<1) +#define PIC32_I2CCON_SEN (1<<0) +#define PIC32_I2CxCONCLR 0x0004 +#define PIC32_I2CxCONSET 0x0008 +#define PIC32_I2CxSTAT 0x0010 +#define PIC32_I2CxSTATCLR 0x0014 +#define PIC32_I2CSTAT_ACKSTAT (1<<15) +#define PIC32_I2CSTAT_TRSTAT (1<<14) +#define PIC32_I2CSTAT_BCL (1<<10) +#define PIC32_I2CSTAT_IWCOL (1<<7) +#define PIC32_I2CSTAT_I2COV (1<<6) +#define PIC32_I2CxBRG 0x0040 +#define PIC32_I2CxTRN 0x0050 +#define PIC32_I2CxRCV 0x0060 + +static DEFINE_SPINLOCK(pic32_bus_lock); + +static void __iomem *bus_xfer = (void __iomem *)0xbf000600; +static void __iomem *bus_status = (void __iomem *)0xbf000060; + +#define DELAY() udelay(100) + +static inline unsigned int ioready(void) +{ + return readl(bus_status) & 1; +} + +static inline void wait_ioready(void) +{ + do { } while (!ioready()); +} + +static inline void wait_ioclear(void) +{ + do { } while (ioready()); +} + +static inline void check_ioclear(void) +{ + if (ioready()) { + do { + (void) readl(bus_xfer); + DELAY(); + } while (ioready()); + } +} + +static u32 pic32_bus_readl(u32 reg) +{ + unsigned long flags; + u32 status, val; + + spin_lock_irqsave(&pic32_bus_lock, flags); + + check_ioclear(); + writel((0x01 << 24) | (reg & 0x00ffffff), bus_xfer); + DELAY(); + wait_ioready(); + status = readl(bus_xfer); + DELAY(); + val = readl(bus_xfer); + wait_ioclear(); + + spin_unlock_irqrestore(&pic32_bus_lock, flags); + + return val; +} + +static void pic32_bus_writel(u32 val, u32 reg) +{ + unsigned long flags; + u32 status; + + spin_lock_irqsave(&pic32_bus_lock, flags); + + check_ioclear(); + writel((0x10 << 24) | (reg & 0x00ffffff), bus_xfer); + DELAY(); + writel(val, bus_xfer); + DELAY(); + wait_ioready(); + status = readl(bus_xfer); + wait_ioclear(); + + spin_unlock_irqrestore(&pic32_bus_lock, flags); +} + +struct pic32_i2c_platform_data { + u32 base; + struct i2c_adapter adap; + u32 xfer_timeout; + u32 ack_timeout; + u32 ctl_timeout; +}; + +static inline void pic32_i2c_start(struct pic32_i2c_platform_data *adap) +{ + pic32_bus_writel(PIC32_I2CCON_SEN, adap->base + PIC32_I2CxCONSET); +} + +static inline void pic32_i2c_stop(struct pic32_i2c_platform_data *adap) +{ + pic32_bus_writel(PIC32_I2CCON_PEN, adap->base + PIC32_I2CxCONSET); +} + +static inline void pic32_i2c_ack(struct pic32_i2c_platform_data *adap) +{ + pic32_bus_writel(PIC32_I2CCON_ACKDT, adap->base + PIC32_I2CxCONCLR); + pic32_bus_writel(PIC32_I2CCON_ACKEN, adap->base + PIC32_I2CxCONSET); +} + +static inline void pic32_i2c_nack(struct pic32_i2c_platform_data *adap) +{ + pic32_bus_writel(PIC32_I2CCON_ACKDT, adap->base + PIC32_I2CxCONSET); + pic32_bus_writel(PIC32_I2CCON_ACKEN, adap->base + PIC32_I2CxCONSET); +} + +static inline int pic32_i2c_idle(struct pic32_i2c_platform_data *adap) +{ + int i; + + for (i = 0; i < adap->ctl_timeout; i++) { + if (((pic32_bus_readl(adap->base + PIC32_I2CxCON) & + (PIC32_I2CCON_ACKEN | PIC32_I2CCON_RCEN | + PIC32_I2CCON_PEN | PIC32_I2CCON_RSEN | + PIC32_I2CCON_SEN)) == 0) && + ((pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & + (PIC32_I2CSTAT_TRSTAT)) == 0)) + return 0; + udelay(1); + } + return -ETIMEDOUT; +} + +static inline u32 pic32_i2c_master_write(struct pic32_i2c_platform_data *adap, + u32 byte) +{ + pic32_bus_writel(byte, adap->base + PIC32_I2CxTRN); + return pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & + PIC32_I2CSTAT_IWCOL; +} + +static inline u32 pic32_i2c_master_read(struct pic32_i2c_platform_data *adap) +{ + pic32_bus_writel(PIC32_I2CCON_RCEN, adap->base + PIC32_I2CxCONSET); + while (pic32_bus_readl(adap->base + PIC32_I2CxCON) & PIC32_I2CCON_RCEN) + ; + pic32_bus_writel(PIC32_I2CSTAT_I2COV, adap->base + PIC32_I2CxSTATCLR); + return pic32_bus_readl(adap->base + PIC32_I2CxRCV); +} + +static int pic32_i2c_address(struct pic32_i2c_platform_data *adap, + unsigned int addr, int rd) +{ + pic32_i2c_idle(adap); + pic32_i2c_start(adap); + pic32_i2c_idle(adap); + + addr <<= 1; + if (rd) + addr |= 1; + + if (pic32_i2c_master_write(adap, addr)) + return -EIO; + pic32_i2c_idle(adap); + if (pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & + PIC32_I2CSTAT_ACKSTAT) + return -EIO; + return 0; +} + +static int sead3_i2c_read(struct pic32_i2c_platform_data *adap, + unsigned char *buf, unsigned int len) +{ + u32 data; + int i; + + i = 0; + while (i < len) { + data = pic32_i2c_master_read(adap); + buf[i++] = data; + if (i < len) + pic32_i2c_ack(adap); + else + pic32_i2c_nack(adap); + } + + pic32_i2c_stop(adap); + pic32_i2c_idle(adap); + return 0; +} + +static int sead3_i2c_write(struct pic32_i2c_platform_data *adap, + unsigned char *buf, unsigned int len) +{ + int i; + u32 data; + + i = 0; + while (i < len) { + data = buf[i]; + if (pic32_i2c_master_write(adap, data)) + return -EIO; + pic32_i2c_idle(adap); + if (pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & + PIC32_I2CSTAT_ACKSTAT) + return -EIO; + i++; + } + + pic32_i2c_stop(adap); + pic32_i2c_idle(adap); + return 0; +} + +static int sead3_pic32_platform_xfer(struct i2c_adapter *i2c_adap, + struct i2c_msg *msgs, int num) +{ + struct pic32_i2c_platform_data *adap = i2c_adap->algo_data; + struct i2c_msg *p; + int i, err = 0; + + for (i = 0; i < num; i++) { +#define __BUFSIZE 80 + int ii; + static char buf[__BUFSIZE]; + char *b = buf; + + p = &msgs[i]; + b += sprintf(buf, " [%d bytes]", p->len); + if ((p->flags & I2C_M_RD) == 0) { + for (ii = 0; ii < p->len; ii++) { + if (b < &buf[__BUFSIZE-4]) { + b += sprintf(b, " %02x", p->buf[ii]); + } else { + strcat(b, "..."); + break; + } + } + } + } + + for (i = 0; !err && i < num; i++) { + p = &msgs[i]; + err = pic32_i2c_address(adap, p->addr, p->flags & I2C_M_RD); + if (err || !p->len) + continue; + if (p->flags & I2C_M_RD) + err = sead3_i2c_read(adap, p->buf, p->len); + else + err = sead3_i2c_write(adap, p->buf, p->len); + } + + /* Return the number of messages processed, or the error code. */ + if (err == 0) + err = num; + + return err; +} + +static u32 sead3_pic32_platform_func(struct i2c_adapter *adap) +{ + return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; +} + +static const struct i2c_algorithm sead3_platform_algo = { + .master_xfer = sead3_pic32_platform_xfer, + .functionality = sead3_pic32_platform_func, +}; + +static void sead3_i2c_platform_setup(struct pic32_i2c_platform_data *priv) +{ + pic32_bus_writel(500, priv->base + PIC32_I2CxBRG); + pic32_bus_writel(PIC32_I2CCON_ON, priv->base + PIC32_I2CxCONCLR); + pic32_bus_writel(PIC32_I2CCON_ON, priv->base + PIC32_I2CxCONSET); + pic32_bus_writel(PIC32_I2CSTAT_BCL | PIC32_I2CSTAT_IWCOL, + priv->base + PIC32_I2CxSTATCLR); +} + +static int __devinit sead3_i2c_platform_probe(struct platform_device *pdev) +{ + struct pic32_i2c_platform_data *priv; + struct resource *r; + int ret; + + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!r) { + ret = -ENODEV; + goto out; + } + + priv = kzalloc(sizeof(struct pic32_i2c_platform_data), GFP_KERNEL); + if (!priv) { + ret = -ENOMEM; + goto out; + } + + priv->base = r->start; + if (!priv->base) { + ret = -EBUSY; + goto out_mem; + } + + priv->xfer_timeout = 200; + priv->ack_timeout = 200; + priv->ctl_timeout = 200; + + priv->adap.nr = pdev->id; + priv->adap.algo = &sead3_platform_algo; + priv->adap.algo_data = priv; + priv->adap.dev.parent = &pdev->dev; + strlcpy(priv->adap.name, "SEAD3 PIC32", sizeof(priv->adap.name)); + + sead3_i2c_platform_setup(priv); + + ret = i2c_add_numbered_adapter(&priv->adap); + if (ret == 0) { + platform_set_drvdata(pdev, priv); + return 0; + } + +out_mem: + kfree(priv); +out: + return ret; +} + +static int __devexit sead3_i2c_platform_remove(struct platform_device *pdev) +{ + struct pic32_i2c_platform_data *priv = platform_get_drvdata(pdev); + + platform_set_drvdata(pdev, NULL); + i2c_del_adapter(&priv->adap); + kfree(priv); + return 0; +} + +#ifdef CONFIG_PM +static int sead3_i2c_platform_suspend(struct platform_device *pdev, + pm_message_t state) +{ + dev_dbg(&pdev->dev, "i2c_platform_disable\n"); + return 0; +} + +static int sead3_i2c_platform_resume(struct platform_device *pdev) +{ + struct pic32_i2c_platform_data *priv = platform_get_drvdata(pdev); + + dev_dbg(&pdev->dev, "sead3_i2c_platform_setup\n"); + sead3_i2c_platform_setup(priv); + + return 0; +} +#else +#define sead3_i2c_platform_suspend NULL +#define sead3_i2c_platform_resume NULL +#endif + +static struct platform_driver sead3_i2c_platform_driver = { + .driver = { + .name = "sead3-i2c", + .owner = THIS_MODULE, + }, + .probe = sead3_i2c_platform_probe, + .remove = __devexit_p(sead3_i2c_platform_remove), + .suspend = sead3_i2c_platform_suspend, + .resume = sead3_i2c_platform_resume, +}; + +static int __init sead3_i2c_platform_init(void) +{ + return platform_driver_register(&sead3_i2c_platform_driver); +} +module_init(sead3_i2c_platform_init); + +static void __exit sead3_i2c_platform_exit(void) +{ + platform_driver_unregister(&sead3_i2c_platform_driver); +} +module_exit(sead3_i2c_platform_exit); + +MODULE_AUTHOR("Chris Dearman, MIPS Technologies INC."); +MODULE_DESCRIPTION("SEAD3 PIC32 I2C driver"); +MODULE_LICENSE("GPL"); diff --git a/arch/mips/mti-sead3/sead3-i2c.c b/arch/mips/mti-sead3/sead3-i2c.c new file mode 100644 index 000000000000..f70d5fc58ef5 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-i2c.c @@ -0,0 +1,37 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/module.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <irq.h> + +struct resource sead3_i2c_resources[] = { + { + .start = 0x805200, + .end = 0x8053ff, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device sead3_i2c_device = { + .name = "sead3-i2c", + .id = 0, + .num_resources = ARRAY_SIZE(sead3_i2c_resources), + .resource = sead3_i2c_resources, +}; + +static int __init sead3_i2c_init(void) +{ + return platform_device_register(&sead3_i2c_device); +} + +module_init(sead3_i2c_init); + +MODULE_AUTHOR("Chris Dearman <chris@mips.com>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("I2C probe driver for SEAD3"); diff --git a/arch/mips/mti-sead3/sead3-init.c b/arch/mips/mti-sead3/sead3-init.c new file mode 100644 index 000000000000..a958cad6fff6 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-init.c @@ -0,0 +1,91 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/init.h> +#include <linux/io.h> + +#include <asm/bootinfo.h> +#include <asm/cacheflush.h> +#include <asm/traps.h> +#include <asm/mips-boards/generic.h> +#include <asm/mips-boards/prom.h> + +extern void prom_init_early_console(char port); + +extern char except_vec_nmi; +extern char except_vec_ejtag_debug; + +int prom_argc; +int *_prom_argv, *_prom_envp; + +#define prom_envp(index) ((char *)(long)_prom_envp[(index)]) + +char *prom_getenv(char *envname) +{ + /* + * Return a pointer to the given environment variable. + * In 64-bit mode: we're using 64-bit pointers, but all pointers + * in the PROM structures are only 32-bit, so we need some + * workarounds, if we are running in 64-bit mode. + */ + int i, index = 0; + + i = strlen(envname); + + while (prom_envp(index)) { + if (strncmp(envname, prom_envp(index), i) == 0) + return prom_envp(index+1); + index += 2; + } + + return NULL; +} + +static void __init mips_nmi_setup(void) +{ + void *base; + + base = cpu_has_veic ? + (void *)(CAC_BASE + 0xa80) : + (void *)(CAC_BASE + 0x380); + memcpy(base, &except_vec_nmi, 0x80); + flush_icache_range((unsigned long)base, (unsigned long)base + 0x80); +} + +static void __init mips_ejtag_setup(void) +{ + void *base; + + base = cpu_has_veic ? + (void *)(CAC_BASE + 0xa00) : + (void *)(CAC_BASE + 0x300); + memcpy(base, &except_vec_ejtag_debug, 0x80); + flush_icache_range((unsigned long)base, (unsigned long)base + 0x80); +} + +void __init prom_init(void) +{ + prom_argc = fw_arg0; + _prom_argv = (int *) fw_arg1; + _prom_envp = (int *) fw_arg2; + + board_nmi_handler_setup = mips_nmi_setup; + board_ejtag_handler_setup = mips_ejtag_setup; + + prom_init_cmdline(); + prom_meminit(); +#ifdef CONFIG_EARLY_PRINTK + if ((strstr(prom_getcmdline(), "console=ttyS0")) != NULL) + prom_init_early_console(0); + else if ((strstr(prom_getcmdline(), "console=ttyS1")) != NULL) + prom_init_early_console(1); +#endif +#ifdef CONFIG_SERIAL_8250_CONSOLE + if ((strstr(prom_getcmdline(), "console=")) == NULL) + strcat(prom_getcmdline(), " console=ttyS0,38400n8r"); +#endif +} diff --git a/arch/mips/mti-sead3/sead3-int.c b/arch/mips/mti-sead3/sead3-int.c new file mode 100644 index 000000000000..e26e08274fc5 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-int.c @@ -0,0 +1,158 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/init.h> +#include <linux/irq.h> +#include <linux/io.h> + +#include <asm/gic.h> +#include <asm/irq_cpu.h> +#include <asm/setup.h> + +#include <asm/mips-boards/sead3int.h> + +#define SEAD_CONFIG_GIC_PRESENT_SHF 1 +#define SEAD_CONFIG_GIC_PRESENT_MSK (1 << SEAD_CONFIG_GIC_PRESENT_SHF) +#define SEAD_CONFIG_BASE 0x1b100110 +#define SEAD_CONFIG_SIZE 4 + +int gic_present; +static unsigned long sead3_config_reg; + +/* + * This table defines the setup for each external GIC interrupt. It is + * indexed by interrupt number. + */ +#define GIC_CPU_NMI GIC_MAP_TO_NMI_MSK +static struct gic_intr_map gic_intr_map[GIC_NUM_INTRS] = { + { 0, GIC_CPU_INT4, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, + { 0, GIC_CPU_INT3, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, + { 0, GIC_CPU_INT2, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, + { 0, GIC_CPU_INT2, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, + { 0, GIC_CPU_INT1, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, + { 0, GIC_CPU_INT0, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, + { 0, GIC_CPU_INT0, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, + { 0, GIC_CPU_INT0, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, + { 0, GIC_CPU_INT0, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, + { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED }, + { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED }, + { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED }, + { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED }, + { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED }, + { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED }, + { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED }, +}; + +asmlinkage void plat_irq_dispatch(void) +{ + unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM; + int irq; + + irq = (fls(pending) - CAUSEB_IP - 1); + if (irq >= 0) + do_IRQ(MIPS_CPU_IRQ_BASE + irq); + else + spurious_interrupt(); +} + +void __init arch_init_irq(void) +{ + int i; + + if (!cpu_has_veic) { + mips_cpu_irq_init(); + + if (cpu_has_vint) { + /* install generic handler */ + for (i = 0; i < 8; i++) + set_vi_handler(i, plat_irq_dispatch); + } + } + + sead3_config_reg = (unsigned long)ioremap_nocache(SEAD_CONFIG_BASE, + SEAD_CONFIG_SIZE); + gic_present = (REG32(sead3_config_reg) & SEAD_CONFIG_GIC_PRESENT_MSK) >> + SEAD_CONFIG_GIC_PRESENT_SHF; + pr_info("GIC: %spresent\n", (gic_present) ? "" : "not "); + pr_info("EIC: %s\n", + (current_cpu_data.options & MIPS_CPU_VEIC) ? "on" : "off"); + + if (gic_present) + gic_init(GIC_BASE_ADDR, GIC_ADDRSPACE_SZ, gic_intr_map, + ARRAY_SIZE(gic_intr_map), MIPS_GIC_IRQ_BASE); +} + +void gic_enable_interrupt(int irq_vec) +{ + unsigned int i, irq_source; + + /* enable all the interrupts associated with this vector */ + for (i = 0; i < gic_shared_intr_map[irq_vec].num_shared_intr; i++) { + irq_source = gic_shared_intr_map[irq_vec].intr_list[i]; + GIC_SET_INTR_MASK(irq_source); + } + /* enable all local interrupts associated with this vector */ + if (gic_shared_intr_map[irq_vec].local_intr_mask) { + GICWRITE(GIC_REG(VPE_LOCAL, GIC_VPE_OTHER_ADDR), 0); + GICWRITE(GIC_REG(VPE_OTHER, GIC_VPE_SMASK), + gic_shared_intr_map[irq_vec].local_intr_mask); + } +} + +void gic_disable_interrupt(int irq_vec) +{ + unsigned int i, irq_source; + + /* disable all the interrupts associated with this vector */ + for (i = 0; i < gic_shared_intr_map[irq_vec].num_shared_intr; i++) { + irq_source = gic_shared_intr_map[irq_vec].intr_list[i]; + GIC_CLR_INTR_MASK(irq_source); + } + /* disable all local interrupts associated with this vector */ + if (gic_shared_intr_map[irq_vec].local_intr_mask) { + GICWRITE(GIC_REG(VPE_LOCAL, GIC_VPE_OTHER_ADDR), 0); + GICWRITE(GIC_REG(VPE_OTHER, GIC_VPE_RMASK), + gic_shared_intr_map[irq_vec].local_intr_mask); + } +} + +void gic_irq_ack(struct irq_data *d) +{ + GIC_CLR_INTR_MASK(d->irq - gic_irq_base); +} + +void gic_finish_irq(struct irq_data *d) +{ + unsigned int irq = (d->irq - gic_irq_base); + unsigned int i, irq_source; + + /* Clear edge detectors. */ + for (i = 0; i < gic_shared_intr_map[irq].num_shared_intr; i++) { + irq_source = gic_shared_intr_map[irq].intr_list[i]; + if (gic_irq_flags[irq_source] & GIC_TRIG_EDGE) + GICWRITE(GIC_REG(SHARED, GIC_SH_WEDGE), irq_source); + } + + /* Enable interrupts. */ + GIC_SET_INTR_MASK(irq); +} + +void __init gic_platform_init(int irqs, struct irq_chip *irq_controller) +{ + int i; + + /* + * For non-EIC mode, we want to setup the GIC in pass-through + * mode, as if the GIC didn't exist. Do not map any interrupts + * for an external interrupt controller. + */ + if (!cpu_has_veic) + return; + + for (i = gic_irq_base; i < (gic_irq_base + irqs); i++) + irq_set_chip_and_handler(i, irq_controller, handle_percpu_irq); +} diff --git a/arch/mips/mti-sead3/sead3-lcd.c b/arch/mips/mti-sead3/sead3-lcd.c new file mode 100644 index 000000000000..10b10ed21f77 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-lcd.c @@ -0,0 +1,43 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/init.h> +#include <linux/platform_device.h> + +static struct resource __initdata sead3_lcd_resource = { + .start = 0x1f000400, + .end = 0x1f00041f, + .flags = IORESOURCE_MEM, +}; + +static __init int sead3_lcd_add(void) +{ + struct platform_device *pdev; + int retval; + + /* SEAD-3 and Cobalt platforms use same display type. */ + pdev = platform_device_alloc("cobalt-lcd", -1); + if (!pdev) + return -ENOMEM; + + retval = platform_device_add_resources(pdev, &sead3_lcd_resource, 1); + if (retval) + goto err_free_device; + + retval = platform_device_add(pdev); + if (retval) + goto err_free_device; + + return 0; + +err_free_device: + platform_device_put(pdev); + + return retval; +} + +device_initcall(sead3_lcd_add); diff --git a/arch/mips/mti-sead3/sead3-leds.c b/arch/mips/mti-sead3/sead3-leds.c new file mode 100644 index 000000000000..20102a6d4141 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-leds.c @@ -0,0 +1,83 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/module.h> +#include <linux/leds.h> +#include <linux/platform_device.h> + +#define LEDFLAGS(bits, shift) \ + ((bits << 8) | (shift << 8)) + +#define LEDBITS(id, shift, bits) \ + .name = id #shift, \ + .flags = LEDFLAGS(bits, shift) + +struct led_info led_data_info[] = { + { LEDBITS("bit", 0, 1) }, + { LEDBITS("bit", 1, 1) }, + { LEDBITS("bit", 2, 1) }, + { LEDBITS("bit", 3, 1) }, + { LEDBITS("bit", 4, 1) }, + { LEDBITS("bit", 5, 1) }, + { LEDBITS("bit", 6, 1) }, + { LEDBITS("bit", 7, 1) }, + { LEDBITS("all", 0, 8) }, +}; + +static struct led_platform_data led_data = { + .num_leds = ARRAY_SIZE(led_data_info), + .leds = led_data_info +}; + +static struct resource pled_resources[] = { + { + .start = 0x1f000210, + .end = 0x1f000217, + .flags = IORESOURCE_MEM + } +}; + +static struct platform_device pled_device = { + .name = "sead3::pled", + .id = 0, + .dev = { + .platform_data = &led_data, + }, + .num_resources = ARRAY_SIZE(pled_resources), + .resource = pled_resources +}; + + +static struct resource fled_resources[] = { + { + .start = 0x1f000218, + .end = 0x1f00021f, + .flags = IORESOURCE_MEM + } +}; + +static struct platform_device fled_device = { + .name = "sead3::fled", + .id = 0, + .dev = { + .platform_data = &led_data, + }, + .num_resources = ARRAY_SIZE(fled_resources), + .resource = fled_resources +}; + +static int __init led_init(void) +{ + platform_device_register(&pled_device); + return platform_device_register(&fled_device); +} + +module_init(led_init); + +MODULE_AUTHOR("Chris Dearman <chris@mips.com>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("LED probe driver for SEAD-3"); diff --git a/arch/mips/mti-sead3/sead3-memory.c b/arch/mips/mti-sead3/sead3-memory.c new file mode 100644 index 000000000000..da9244106f86 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-memory.c @@ -0,0 +1,138 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/bootmem.h> + +#include <asm/bootinfo.h> +#include <asm/sections.h> +#include <asm/mips-boards/prom.h> + +enum yamon_memtypes { + yamon_dontuse, + yamon_prom, + yamon_free, +}; + +static struct prom_pmemblock mdesc[PROM_MAX_PMEMBLOCKS]; + +/* determined physical memory size, not overridden by command line args */ +unsigned long physical_memsize = 0L; + +struct prom_pmemblock * __init prom_getmdesc(void) +{ + char *memsize_str, *ptr; + unsigned int memsize; + static char cmdline[COMMAND_LINE_SIZE] __initdata; + long val; + int tmp; + + /* otherwise look in the environment */ + memsize_str = prom_getenv("memsize"); + if (!memsize_str) { + pr_warn("memsize not set in boot prom, set to default 32Mb\n"); + physical_memsize = 0x02000000; + } else { + tmp = kstrtol(memsize_str, 0, &val); + physical_memsize = (unsigned long)val; + } + +#ifdef CONFIG_CPU_BIG_ENDIAN + /* SOC-it swaps, or perhaps doesn't swap, when DMA'ing the last + word of physical memory */ + physical_memsize -= PAGE_SIZE; +#endif + + /* Check the command line for a memsize directive that overrides + the physical/default amount */ + strcpy(cmdline, arcs_cmdline); + ptr = strstr(cmdline, "memsize="); + if (ptr && (ptr != cmdline) && (*(ptr - 1) != ' ')) + ptr = strstr(ptr, " memsize="); + + if (ptr) + memsize = memparse(ptr + 8, &ptr); + else + memsize = physical_memsize; + + memset(mdesc, 0, sizeof(mdesc)); + + mdesc[0].type = yamon_dontuse; + mdesc[0].base = 0x00000000; + mdesc[0].size = 0x00001000; + + mdesc[1].type = yamon_prom; + mdesc[1].base = 0x00001000; + mdesc[1].size = 0x000ef000; + + /* + * The area 0x000f0000-0x000fffff is allocated for BIOS memory by the + * south bridge and PCI access always forwarded to the ISA Bus and + * BIOSCS# is always generated. + * This mean that this area can't be used as DMA memory for PCI + * devices. + */ + mdesc[2].type = yamon_dontuse; + mdesc[2].base = 0x000f0000; + mdesc[2].size = 0x00010000; + + mdesc[3].type = yamon_dontuse; + mdesc[3].base = 0x00100000; + mdesc[3].size = CPHYSADDR(PFN_ALIGN((unsigned long)&_end)) - + mdesc[3].base; + + mdesc[4].type = yamon_free; + mdesc[4].base = CPHYSADDR(PFN_ALIGN(&_end)); + mdesc[4].size = memsize - mdesc[4].base; + + return &mdesc[0]; +} + +static int __init prom_memtype_classify(unsigned int type) +{ + switch (type) { + case yamon_free: + return BOOT_MEM_RAM; + case yamon_prom: + return BOOT_MEM_ROM_DATA; + default: + return BOOT_MEM_RESERVED; + } +} + +void __init prom_meminit(void) +{ + struct prom_pmemblock *p; + + p = prom_getmdesc(); + + while (p->size) { + long type; + unsigned long base, size; + + type = prom_memtype_classify(p->type); + base = p->base; + size = p->size; + + add_memory_region(base, size, type); + p++; + } +} + +void __init prom_free_prom_memory(void) +{ + unsigned long addr; + int i; + + for (i = 0; i < boot_mem_map.nr_map; i++) { + if (boot_mem_map.map[i].type != BOOT_MEM_ROM_DATA) + continue; + + addr = boot_mem_map.map[i].addr; + free_init_pages("prom memory", + addr, addr + boot_mem_map.map[i].size); + } +} diff --git a/arch/mips/mti-sead3/sead3-mtd.c b/arch/mips/mti-sead3/sead3-mtd.c new file mode 100644 index 000000000000..ffa35f509789 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-mtd.c @@ -0,0 +1,54 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/mtd/physmap.h> + +static struct mtd_partition sead3_mtd_partitions[] = { + { + .name = "User FS", + .offset = 0x00000000, + .size = 0x01fc0000, + }, { + .name = "Board Config", + .offset = 0x01fc0000, + .size = 0x00040000, + .mask_flags = MTD_WRITEABLE + }, +}; + +static struct physmap_flash_data sead3_flash_data = { + .width = 4, + .nr_parts = ARRAY_SIZE(sead3_mtd_partitions), + .parts = sead3_mtd_partitions +}; + +static struct resource sead3_flash_resource = { + .start = 0x1c000000, + .end = 0x1dffffff, + .flags = IORESOURCE_MEM +}; + +static struct platform_device sead3_flash = { + .name = "physmap-flash", + .id = 0, + .dev = { + .platform_data = &sead3_flash_data, + }, + .num_resources = 1, + .resource = &sead3_flash_resource, +}; + +static int __init sead3_mtd_init(void) +{ + platform_device_register(&sead3_flash); + + return 0; +} + +module_init(sead3_mtd_init) diff --git a/arch/mips/mti-sead3/sead3-net.c b/arch/mips/mti-sead3/sead3-net.c new file mode 100644 index 000000000000..04d704df6098 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-net.c @@ -0,0 +1,51 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/module.h> +#include <linux/irq.h> +#include <linux/platform_device.h> +#include <linux/smsc911x.h> + +static struct smsc911x_platform_config sead3_smsc911x_data = { + .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW, + .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL, + .flags = SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS, + .phy_interface = PHY_INTERFACE_MODE_MII, +}; + +struct resource sead3_net_resourcess[] = { + { + .start = 0x1f010000, + .end = 0x1f01ffff, + .flags = IORESOURCE_MEM + }, + { + .start = MIPS_CPU_IRQ_BASE + 6, + .flags = IORESOURCE_IRQ + } +}; + +static struct platform_device sead3_net_device = { + .name = "smsc911x", + .id = 0, + .dev = { + .platform_data = &sead3_smsc911x_data, + }, + .num_resources = ARRAY_SIZE(sead3_net_resourcess), + .resource = sead3_net_resourcess +}; + +static int __init sead3_net_init(void) +{ + return platform_device_register(&sead3_net_device); +} + +module_init(sead3_net_init); + +MODULE_AUTHOR("Chris Dearman <chris@mips.com>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Network probe driver for SEAD-3"); diff --git a/arch/mips/mti-sead3/sead3-pic32-bus.c b/arch/mips/mti-sead3/sead3-pic32-bus.c new file mode 100644 index 000000000000..9f0d89bc800e --- /dev/null +++ b/arch/mips/mti-sead3/sead3-pic32-bus.c @@ -0,0 +1,103 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/delay.h> +#include <linux/kernel.h> +#include <linux/spinlock.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/errno.h> + +#define PIC32_NULL 0x00 +#define PIC32_RD 0x01 +#define PIC32_SYSRD 0x02 +#define PIC32_WR 0x10 +#define PIC32_SYSWR 0x20 +#define PIC32_IRQ_CLR 0x40 +#define PIC32_STATUS 0x80 + +#define DELAY() udelay(100) /* FIXME: needed? */ + +/* spinlock to ensure atomic access to PIC32 */ +static DEFINE_SPINLOCK(pic32_bus_lock); + +/* FIXME: io_remap these */ +static void __iomem *bus_xfer = (void __iomem *)0xbf000600; +static void __iomem *bus_status = (void __iomem *)0xbf000060; + +static inline unsigned int ioready(void) +{ + return readl(bus_status) & 1; +} + +static inline void wait_ioready(void) +{ + do { } while (!ioready()); +} + +static inline void wait_ioclear(void) +{ + do { } while (ioready()); +} + +static inline void check_ioclear(void) +{ + if (ioready()) { + pr_debug("ioclear: initially busy\n"); + do { + (void) readl(bus_xfer); + DELAY(); + } while (ioready()); + pr_debug("ioclear: cleared busy\n"); + } +} + +u32 pic32_bus_readl(u32 reg) +{ + unsigned long flags; + u32 status, val; + + spin_lock_irqsave(&pic32_bus_lock, flags); + + check_ioclear(); + + writel((PIC32_RD << 24) | (reg & 0x00ffffff), bus_xfer); + DELAY(); + wait_ioready(); + status = readl(bus_xfer); + DELAY(); + val = readl(bus_xfer); + wait_ioclear(); + + pr_debug("pic32_bus_readl: *%x -> %x (status=%x)\n", reg, val, status); + + spin_unlock_irqrestore(&pic32_bus_lock, flags); + + return val; +} + +void pic32_bus_writel(u32 val, u32 reg) +{ + unsigned long flags; + u32 status; + + spin_lock_irqsave(&pic32_bus_lock, flags); + + check_ioclear(); + + writel((PIC32_WR << 24) | (reg & 0x00ffffff), bus_xfer); + DELAY(); + writel(val, bus_xfer); + DELAY(); + wait_ioready(); + status = readl(bus_xfer); + wait_ioclear(); + + pr_debug("pic32_bus_writel: *%x <- %x (status=%x)\n", reg, val, status); + + spin_unlock_irqrestore(&pic32_bus_lock, flags); +} diff --git a/arch/mips/mti-sead3/sead3-pic32-i2c-drv.c b/arch/mips/mti-sead3/sead3-pic32-i2c-drv.c new file mode 100644 index 000000000000..46509b0a620d --- /dev/null +++ b/arch/mips/mti-sead3/sead3-pic32-i2c-drv.c @@ -0,0 +1,435 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/delay.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/spinlock.h> +#include <linux/platform_device.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/i2c.h> +#include <linux/slab.h> + +#define PIC32_I2CxCON 0x0000 +#define PIC32_I2CxCONCLR 0x0004 +#define PIC32_I2CxCONSET 0x0008 +#define PIC32_I2CxCONINV 0x000C +#define I2CCON_ON (1<<15) +#define I2CCON_FRZ (1<<14) +#define I2CCON_SIDL (1<<13) +#define I2CCON_SCLREL (1<<12) +#define I2CCON_STRICT (1<<11) +#define I2CCON_A10M (1<<10) +#define I2CCON_DISSLW (1<<9) +#define I2CCON_SMEN (1<<8) +#define I2CCON_GCEN (1<<7) +#define I2CCON_STREN (1<<6) +#define I2CCON_ACKDT (1<<5) +#define I2CCON_ACKEN (1<<4) +#define I2CCON_RCEN (1<<3) +#define I2CCON_PEN (1<<2) +#define I2CCON_RSEN (1<<1) +#define I2CCON_SEN (1<<0) + +#define PIC32_I2CxSTAT 0x0010 +#define PIC32_I2CxSTATCLR 0x0014 +#define PIC32_I2CxSTATSET 0x0018 +#define PIC32_I2CxSTATINV 0x001C +#define I2CSTAT_ACKSTAT (1<<15) +#define I2CSTAT_TRSTAT (1<<14) +#define I2CSTAT_BCL (1<<10) +#define I2CSTAT_GCSTAT (1<<9) +#define I2CSTAT_ADD10 (1<<8) +#define I2CSTAT_IWCOL (1<<7) +#define I2CSTAT_I2COV (1<<6) +#define I2CSTAT_DA (1<<5) +#define I2CSTAT_P (1<<4) +#define I2CSTAT_S (1<<3) +#define I2CSTAT_RW (1<<2) +#define I2CSTAT_RBF (1<<1) +#define I2CSTAT_TBF (1<<0) + +#define PIC32_I2CxADD 0x0020 +#define PIC32_I2CxADDCLR 0x0024 +#define PIC32_I2CxADDSET 0x0028 +#define PIC32_I2CxADDINV 0x002C +#define PIC32_I2CxMSK 0x0030 +#define PIC32_I2CxMSKCLR 0x0034 +#define PIC32_I2CxMSKSET 0x0038 +#define PIC32_I2CxMSKINV 0x003C +#define PIC32_I2CxBRG 0x0040 +#define PIC32_I2CxBRGCLR 0x0044 +#define PIC32_I2CxBRGSET 0x0048 +#define PIC32_I2CxBRGINV 0x004C +#define PIC32_I2CxTRN 0x0050 +#define PIC32_I2CxTRNCLR 0x0054 +#define PIC32_I2CxTRNSET 0x0058 +#define PIC32_I2CxTRNINV 0x005C +#define PIC32_I2CxRCV 0x0060 + +struct i2c_platform_data { + u32 base; + struct i2c_adapter adap; + u32 xfer_timeout; + u32 ack_timeout; + u32 ctl_timeout; +}; + +extern u32 pic32_bus_readl(u32 reg); +extern void pic32_bus_writel(u32 val, u32 reg); + +static inline void +StartI2C(struct i2c_platform_data *adap) +{ + pr_debug("StartI2C\n"); + pic32_bus_writel(I2CCON_SEN, adap->base + PIC32_I2CxCONSET); +} + +static inline void +StopI2C(struct i2c_platform_data *adap) +{ + pr_debug("StopI2C\n"); + pic32_bus_writel(I2CCON_PEN, adap->base + PIC32_I2CxCONSET); +} + +static inline void +AckI2C(struct i2c_platform_data *adap) +{ + pr_debug("AckI2C\n"); + pic32_bus_writel(I2CCON_ACKDT, adap->base + PIC32_I2CxCONCLR); + pic32_bus_writel(I2CCON_ACKEN, adap->base + PIC32_I2CxCONSET); +} + +static inline void +NotAckI2C(struct i2c_platform_data *adap) +{ + pr_debug("NakI2C\n"); + pic32_bus_writel(I2CCON_ACKDT, adap->base + PIC32_I2CxCONSET); + pic32_bus_writel(I2CCON_ACKEN, adap->base + PIC32_I2CxCONSET); +} + +static inline int +IdleI2C(struct i2c_platform_data *adap) +{ + int i; + + pr_debug("IdleI2C\n"); + for (i = 0; i < adap->ctl_timeout; i++) { + if (((pic32_bus_readl(adap->base + PIC32_I2CxCON) & + (I2CCON_ACKEN | I2CCON_RCEN | I2CCON_PEN | I2CCON_RSEN | + I2CCON_SEN)) == 0) && + ((pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & + (I2CSTAT_TRSTAT)) == 0)) + return 0; + udelay(1); + } + return -ETIMEDOUT; +} + +static inline u32 +MasterWriteI2C(struct i2c_platform_data *adap, u32 byte) +{ + pr_debug("MasterWriteI2C\n"); + + pic32_bus_writel(byte, adap->base + PIC32_I2CxTRN); + + return pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & I2CSTAT_IWCOL; +} + +static inline u32 +MasterReadI2C(struct i2c_platform_data *adap) +{ + pr_debug("MasterReadI2C\n"); + + pic32_bus_writel(I2CCON_RCEN, adap->base + PIC32_I2CxCONSET); + + while (pic32_bus_readl(adap->base + PIC32_I2CxCON) & I2CCON_RCEN) + ; + + pic32_bus_writel(I2CSTAT_I2COV, adap->base + PIC32_I2CxSTATCLR); + + return pic32_bus_readl(adap->base + PIC32_I2CxRCV); +} + +static int +do_address(struct i2c_platform_data *adap, unsigned int addr, int rd) +{ + pr_debug("doaddress\n"); + + IdleI2C(adap); + StartI2C(adap); + IdleI2C(adap); + + addr <<= 1; + if (rd) + addr |= 1; + + if (MasterWriteI2C(adap, addr)) + return -EIO; + IdleI2C(adap); + if (pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & I2CSTAT_ACKSTAT) + return -EIO; + return 0; +} + +static int +i2c_read(struct i2c_platform_data *adap, unsigned char *buf, + unsigned int len) +{ + int i; + u32 data; + + pr_debug("i2c_read\n"); + + i = 0; + while (i < len) { + data = MasterReadI2C(adap); + buf[i++] = data; + if (i < len) + AckI2C(adap); + else + NotAckI2C(adap); + } + + StopI2C(adap); + IdleI2C(adap); + return 0; +} + +static int +i2c_write(struct i2c_platform_data *adap, unsigned char *buf, + unsigned int len) +{ + int i; + u32 data; + + pr_debug("i2c_write\n"); + + i = 0; + while (i < len) { + data = buf[i]; + if (MasterWriteI2C(adap, data)) + return -EIO; + IdleI2C(adap); + if (pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & + I2CSTAT_ACKSTAT) + return -EIO; + i++; + } + + StopI2C(adap); + IdleI2C(adap); + return 0; +} + +static int +platform_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num) +{ + struct i2c_platform_data *adap = i2c_adap->algo_data; + struct i2c_msg *p; + int i, err = 0; + + pr_debug("platform_xfer\n"); + for (i = 0; i < num; i++) { +#define __BUFSIZE 80 + int ii; + static char buf[__BUFSIZE]; + char *b = buf; + + p = &msgs[i]; + b += sprintf(buf, " [%d bytes]", p->len); + if ((p->flags & I2C_M_RD) == 0) { + for (ii = 0; ii < p->len; ii++) { + if (b < &buf[__BUFSIZE-4]) { + b += sprintf(b, " %02x", p->buf[ii]); + } else { + strcat(b, "..."); + break; + } + } + } + pr_debug("xfer%d: DevAddr: %04x Op:%s Data:%s\n", i, p->addr, + (p->flags & I2C_M_RD) ? "Rd" : "Wr", buf); + } + + + for (i = 0; !err && i < num; i++) { + p = &msgs[i]; + err = do_address(adap, p->addr, p->flags & I2C_M_RD); + if (err || !p->len) + continue; + if (p->flags & I2C_M_RD) + err = i2c_read(adap, p->buf, p->len); + else + err = i2c_write(adap, p->buf, p->len); + } + + /* Return the number of messages processed, or the error code. */ + if (err == 0) + err = num; + + return err; +} + +static u32 +platform_func(struct i2c_adapter *adap) +{ + pr_debug("platform_algo\n"); + return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; +} + +static const struct i2c_algorithm platform_algo = { + .master_xfer = platform_xfer, + .functionality = platform_func, +}; + +static void i2c_platform_setup(struct i2c_platform_data *priv) +{ + pr_debug("i2c_platform_setup\n"); + + pic32_bus_writel(500, priv->base + PIC32_I2CxBRG); + pic32_bus_writel(I2CCON_ON, priv->base + PIC32_I2CxCONCLR); + pic32_bus_writel(I2CCON_ON, priv->base + PIC32_I2CxCONSET); + pic32_bus_writel((I2CSTAT_BCL | I2CSTAT_IWCOL), + (priv->base + PIC32_I2CxSTATCLR)); +} + +static void i2c_platform_disable(struct i2c_platform_data *priv) +{ + pr_debug("i2c_platform_disable\n"); +} + +static int __devinit +i2c_platform_probe(struct platform_device *pdev) +{ + struct i2c_platform_data *priv; + struct resource *r; + int ret; + + pr_debug("i2c_platform_probe\n"); + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!r) { + ret = -ENODEV; + goto out; + } + + priv = kzalloc(sizeof(struct i2c_platform_data), GFP_KERNEL); + if (!priv) { + ret = -ENOMEM; + goto out; + } + + /* FIXME: need to allocate resource in PIC32 space */ +#if 0 + priv->base = bus_request_region(r->start, resource_size(r), + pdev->name); +#else + priv->base = r->start; +#endif + if (!priv->base) { + ret = -EBUSY; + goto out_mem; + } + + priv->xfer_timeout = 200; + priv->ack_timeout = 200; + priv->ctl_timeout = 200; + + priv->adap.nr = pdev->id; + priv->adap.algo = &platform_algo; + priv->adap.algo_data = priv; + priv->adap.dev.parent = &pdev->dev; + strlcpy(priv->adap.name, "PIC32 I2C", sizeof(priv->adap.name)); + + i2c_platform_setup(priv); + + ret = i2c_add_numbered_adapter(&priv->adap); + if (ret == 0) { + platform_set_drvdata(pdev, priv); + return 0; + } + + i2c_platform_disable(priv); + +out_mem: + kfree(priv); +out: + return ret; +} + +static int __devexit +i2c_platform_remove(struct platform_device *pdev) +{ + struct i2c_platform_data *priv = platform_get_drvdata(pdev); + + pr_debug("i2c_platform_remove\n"); + platform_set_drvdata(pdev, NULL); + i2c_del_adapter(&priv->adap); + i2c_platform_disable(priv); + kfree(priv); + return 0; +} + +#ifdef CONFIG_PM +static int +i2c_platform_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct i2c_platform_data *priv = platform_get_drvdata(pdev); + + dev_dbg(&pdev->dev, "i2c_platform_disable\n"); + i2c_platform_disable(priv); + + return 0; +} + +static int +i2c_platform_resume(struct platform_device *pdev) +{ + struct i2c_platform_data *priv = platform_get_drvdata(pdev); + + dev_dbg(&pdev->dev, "i2c_platform_setup\n"); + i2c_platform_setup(priv); + + return 0; +} +#else +#define i2c_platform_suspend NULL +#define i2c_platform_resume NULL +#endif + +static struct platform_driver i2c_platform_driver = { + .driver = { + .name = "i2c_pic32", + .owner = THIS_MODULE, + }, + .probe = i2c_platform_probe, + .remove = __devexit_p(i2c_platform_remove), + .suspend = i2c_platform_suspend, + .resume = i2c_platform_resume, +}; + +static int __init +i2c_platform_init(void) +{ + pr_debug("i2c_platform_init\n"); + return platform_driver_register(&i2c_platform_driver); +} + +static void __exit +i2c_platform_exit(void) +{ + pr_debug("i2c_platform_exit\n"); + platform_driver_unregister(&i2c_platform_driver); +} + +MODULE_AUTHOR("Chris Dearman, MIPS Technologies INC."); +MODULE_DESCRIPTION("PIC32 I2C driver"); +MODULE_LICENSE("GPL"); + +module_init(i2c_platform_init); +module_exit(i2c_platform_exit); diff --git a/arch/mips/mti-sead3/sead3-platform.c b/arch/mips/mti-sead3/sead3-platform.c new file mode 100644 index 000000000000..6c3b33dbed18 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-platform.c @@ -0,0 +1,45 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/module.h> +#include <linux/init.h> +#include <linux/serial_8250.h> + +#define UART(base, int) \ +{ \ + .mapbase = base, \ + .irq = int, \ + .uartclk = 14745600, \ + .iotype = UPIO_MEM32, \ + .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP, \ + .regshift = 2, \ +} + +static struct plat_serial8250_port uart8250_data[] = { + UART(0x1f000900, MIPS_CPU_IRQ_BASE + 4), /* ttyS0 = USB */ + UART(0x1f000800, MIPS_CPU_IRQ_BASE + 4), /* ttyS1 = RS232 */ + { }, +}; + +static struct platform_device uart8250_device = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM2, + .dev = { + .platform_data = uart8250_data, + }, +}; + +static int __init uart8250_init(void) +{ + return platform_device_register(&uart8250_device); +} + +module_init(uart8250_init); + +MODULE_AUTHOR("Chris Dearman <chris@mips.com>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("8250 UART probe driver for SEAD3"); diff --git a/arch/mips/mti-sead3/sead3-reset.c b/arch/mips/mti-sead3/sead3-reset.c new file mode 100644 index 000000000000..20475c5e7b9c --- /dev/null +++ b/arch/mips/mti-sead3/sead3-reset.c @@ -0,0 +1,39 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/io.h> +#include <linux/pm.h> + +#include <asm/reboot.h> +#include <asm/mips-boards/generic.h> + +static void mips_machine_restart(char *command) +{ + unsigned int __iomem *softres_reg = + ioremap(SOFTRES_REG, sizeof(unsigned int)); + + __raw_writel(GORESET, softres_reg); +} + +static void mips_machine_halt(void) +{ + unsigned int __iomem *softres_reg = + ioremap(SOFTRES_REG, sizeof(unsigned int)); + + __raw_writel(GORESET, softres_reg); +} + +static int __init mips_reboot_setup(void) +{ + _machine_restart = mips_machine_restart; + _machine_halt = mips_machine_halt; + pm_power_off = mips_machine_halt; + + return 0; +} + +arch_initcall(mips_reboot_setup); diff --git a/arch/mips/mti-sead3/sead3-serial.c b/arch/mips/mti-sead3/sead3-serial.c new file mode 100644 index 000000000000..bc52705bbee4 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-serial.c @@ -0,0 +1,45 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/module.h> +#include <linux/init.h> +#include <linux/serial_8250.h> + +#define UART(base, int) \ +{ \ + .mapbase = base, \ + .irq = int, \ + .uartclk = 14745600, \ + .iotype = UPIO_MEM32, \ + .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP, \ + .regshift = 2, \ +} + +static struct plat_serial8250_port uart8250_data[] = { + UART(0x1f000900, MIPS_CPU_IRQ_BASE + 4), /* ttyS0 = USB */ + UART(0x1f000800, MIPS_CPU_IRQ_BASE + 4), /* ttyS1 = RS232 */ + { }, +}; + +static struct platform_device uart8250_device = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM, + .dev = { + .platform_data = uart8250_data, + }, +}; + +static int __init uart8250_init(void) +{ + return platform_device_register(&uart8250_device); +} + +module_init(uart8250_init); + +MODULE_AUTHOR("Chris Dearman <chris@mips.com>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("8250 UART probe driver for the SEAD-3 platform"); diff --git a/arch/mips/mti-sead3/sead3-setup.c b/arch/mips/mti-sead3/sead3-setup.c new file mode 100644 index 000000000000..8ad46ad31b49 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-setup.c @@ -0,0 +1,20 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/init.h> + +int coherentio; /* 0 => no DMA cache coherency (may be set by user) */ +int hw_coherentio; /* 0 => no HW DMA cache coherency (reflects real HW) */ + +const char *get_system_type(void) +{ + return "MIPS SEAD3"; +} + +void __init plat_mem_setup(void) +{ +} diff --git a/arch/mips/mti-sead3/sead3-time.c b/arch/mips/mti-sead3/sead3-time.c new file mode 100644 index 000000000000..048e781a17a0 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-time.c @@ -0,0 +1,117 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/init.h> + +#include <asm/setup.h> +#include <asm/time.h> +#include <asm/irq.h> +#include <asm/mips-boards/generic.h> +#include <asm/mips-boards/prom.h> + +unsigned long cpu_khz; + +static int mips_cpu_timer_irq; +static int mips_cpu_perf_irq; + +static void mips_timer_dispatch(void) +{ + do_IRQ(mips_cpu_timer_irq); +} + +static void mips_perf_dispatch(void) +{ + do_IRQ(mips_cpu_perf_irq); +} + +static void __iomem *status_reg = (void __iomem *)0xbf000410; + +/* + * Estimate CPU frequency. Sets mips_hpt_frequency as a side-effect. + */ +static unsigned int __init estimate_cpu_frequency(void) +{ + unsigned int prid = read_c0_prid() & 0xffff00; + unsigned int tick = 0; + unsigned int freq; + unsigned int orig; + unsigned long flags; + + local_irq_save(flags); + + orig = readl(status_reg) & 0x2; /* get original sample */ + /* wait for transition */ + while ((readl(status_reg) & 0x2) == orig) + ; + orig = orig ^ 0x2; /* flip the bit */ + + write_c0_count(0); + + /* wait 1 second (the sampling clock transitions every 10ms) */ + while (tick < 100) { + /* wait for transition */ + while ((readl(status_reg) & 0x2) == orig) + ; + orig = orig ^ 0x2; /* flip the bit */ + tick++; + } + + freq = read_c0_count(); + + local_irq_restore(flags); + + mips_hpt_frequency = freq; + + /* Adjust for processor */ + if ((prid != (PRID_COMP_MIPS | PRID_IMP_20KC)) && + (prid != (PRID_COMP_MIPS | PRID_IMP_25KF))) + freq *= 2; + + freq += 5000; /* rounding */ + freq -= freq%10000; + + return freq ; +} + +void read_persistent_clock(struct timespec *ts) +{ + ts->tv_sec = 0; + ts->tv_nsec = 0; +} + +static void __init plat_perf_setup(void) +{ + if (cp0_perfcount_irq >= 0) { + if (cpu_has_vint) + set_vi_handler(cp0_perfcount_irq, mips_perf_dispatch); + mips_cpu_perf_irq = MIPS_CPU_IRQ_BASE + cp0_perfcount_irq; + } +} + +unsigned int __cpuinit get_c0_compare_int(void) +{ + if (cpu_has_vint) + set_vi_handler(cp0_compare_irq, mips_timer_dispatch); + mips_cpu_timer_irq = MIPS_CPU_IRQ_BASE + cp0_compare_irq; + return mips_cpu_timer_irq; +} + +void __init plat_time_init(void) +{ + unsigned int est_freq; + + est_freq = estimate_cpu_frequency(); + + pr_debug("CPU frequency %d.%02d MHz\n", (est_freq / 1000000), + (est_freq % 1000000) * 100 / 1000000); + + cpu_khz = est_freq / 1000; + + mips_scroll_message(); + + plat_perf_setup(); +} |
