Initial import

1 files changed, 415 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c24xx/mach-osiris.c b/arch/arm/mach-s3c24xx/mach-osiris.c
new file mode 100644
index 000000000..2f6fdc326
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/mach-osiris.c
@@ -0,0 +1,415 @@
+/*
+ * Copyright (c) 2005-2008 Simtec Electronics
+ *	http://armlinux.simtec.co.uk/
+ *	Ben Dooks <ben@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.
+*/
+
+#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/gpio.h>
+#include <linux/device.h>
+#include <linux/syscore_ops.h>
+#include <linux/serial_core.h>
+#include <linux/serial_s3c.h>
+#include <linux/clk.h>
+#include <linux/i2c.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+
+#include <linux/i2c/tps65010.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/irq.h>
+
+#include <linux/platform_data/mtd-nand-s3c2410.h>
+#include <linux/platform_data/i2c-s3c2410.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/nand_ecc.h>
+#include <linux/mtd/partitions.h>
+
+#include <plat/cpu.h>
+#include <plat/cpu-freq.h>
+#include <plat/devs.h>
+#include <plat/gpio-cfg.h>
+#include <plat/samsung-time.h>
+
+#include <mach/hardware.h>
+#include <mach/regs-gpio.h>
+#include <mach/regs-lcd.h>
+#include <mach/gpio-samsung.h>
+
+#include "common.h"
+#include "osiris.h"
+#include "regs-mem.h"
+
+/* onboard perihperal map */
+
+static struct map_desc osiris_iodesc[] __initdata = {
+  /* ISA IO areas (may be over-written later) */
+
+  {
+	  .virtual	= (u32)S3C24XX_VA_ISA_BYTE,
+	  .pfn		= __phys_to_pfn(S3C2410_CS5),
+	  .length	= SZ_16M,
+	  .type		= MT_DEVICE,
+  }, {
+	  .virtual	= (u32)S3C24XX_VA_ISA_WORD,
+	  .pfn		= __phys_to_pfn(S3C2410_CS5),
+	  .length	= SZ_16M,
+	  .type		= MT_DEVICE,
+  },
+
+  /* CPLD control registers */
+
+  {
+	  .virtual	= (u32)OSIRIS_VA_CTRL0,
+	  .pfn		= __phys_to_pfn(OSIRIS_PA_CTRL0),
+	  .length	= SZ_16K,
+	  .type		= MT_DEVICE,
+  }, {
+	  .virtual	= (u32)OSIRIS_VA_CTRL1,
+	  .pfn		= __phys_to_pfn(OSIRIS_PA_CTRL1),
+	  .length	= SZ_16K,
+	  .type		= MT_DEVICE,
+  }, {
+	  .virtual	= (u32)OSIRIS_VA_CTRL2,
+	  .pfn		= __phys_to_pfn(OSIRIS_PA_CTRL2),
+	  .length	= SZ_16K,
+	  .type		= MT_DEVICE,
+  }, {
+	  .virtual	= (u32)OSIRIS_VA_IDREG,
+	  .pfn		= __phys_to_pfn(OSIRIS_PA_IDREG),
+	  .length	= SZ_16K,
+	  .type		= MT_DEVICE,
+  },
+};
+
+#define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
+#define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
+#define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
+
+static struct s3c2410_uartcfg osiris_uartcfgs[] __initdata = {
+	[0] = {
+		.hwport	     = 0,
+		.flags	     = 0,
+		.ucon	     = UCON,
+		.ulcon	     = ULCON,
+		.ufcon	     = UFCON,
+		.clk_sel	= S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
+	},
+	[1] = {
+		.hwport	     = 1,
+		.flags	     = 0,
+		.ucon	     = UCON,
+		.ulcon	     = ULCON,
+		.ufcon	     = UFCON,
+		.clk_sel	= S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
+	},
+	[2] = {
+		.hwport	     = 2,
+		.flags	     = 0,
+		.ucon	     = UCON,
+		.ulcon	     = ULCON,
+		.ufcon	     = UFCON,
+		.clk_sel	= S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
+	}
+};
+
+/* NAND Flash on Osiris board */
+
+static int external_map[]   = { 2 };
+static int chip0_map[]      = { 0 };
+static int chip1_map[]      = { 1 };
+
+static struct mtd_partition __initdata osiris_default_nand_part[] = {
+	[0] = {
+		.name	= "Boot Agent",
+		.size	= SZ_16K,
+		.offset	= 0,
+	},
+	[1] = {
+		.name	= "/boot",
+		.size	= SZ_4M - SZ_16K,
+		.offset	= SZ_16K,
+	},
+	[2] = {
+		.name	= "user1",
+		.offset	= SZ_4M,
+		.size	= SZ_32M - SZ_4M,
+	},
+	[3] = {
+		.name	= "user2",
+		.offset	= SZ_32M,
+		.size	= MTDPART_SIZ_FULL,
+	}
+};
+
+static struct mtd_partition __initdata osiris_default_nand_part_large[] = {
+	[0] = {
+		.name	= "Boot Agent",
+		.size	= SZ_128K,
+		.offset	= 0,
+	},
+	[1] = {
+		.name	= "/boot",
+		.size	= SZ_4M - SZ_128K,
+		.offset	= SZ_128K,
+	},
+	[2] = {
+		.name	= "user1",
+		.offset	= SZ_4M,
+		.size	= SZ_32M - SZ_4M,
+	},
+	[3] = {
+		.name	= "user2",
+		.offset	= SZ_32M,
+		.size	= MTDPART_SIZ_FULL,
+	}
+};
+
+/* the Osiris has 3 selectable slots for nand-flash, the two
+ * on-board chip areas, as well as the external slot.
+ *
+ * Note, there is no current hot-plug support for the External
+ * socket.
+*/
+
+static struct s3c2410_nand_set __initdata osiris_nand_sets[] = {
+	[1] = {
+		.name		= "External",
+		.nr_chips	= 1,
+		.nr_map		= external_map,
+		.options	= NAND_SCAN_SILENT_NODEV,
+		.nr_partitions	= ARRAY_SIZE(osiris_default_nand_part),
+		.partitions	= osiris_default_nand_part,
+	},
+	[0] = {
+		.name		= "chip0",
+		.nr_chips	= 1,
+		.nr_map		= chip0_map,
+		.nr_partitions	= ARRAY_SIZE(osiris_default_nand_part),
+		.partitions	= osiris_default_nand_part,
+	},
+	[2] = {
+		.name		= "chip1",
+		.nr_chips	= 1,
+		.nr_map		= chip1_map,
+		.options	= NAND_SCAN_SILENT_NODEV,
+		.nr_partitions	= ARRAY_SIZE(osiris_default_nand_part),
+		.partitions	= osiris_default_nand_part,
+	},
+};
+
+static void osiris_nand_select(struct s3c2410_nand_set *set, int slot)
+{
+	unsigned int tmp;
+
+	slot = set->nr_map[slot] & 3;
+
+	pr_debug("osiris_nand: selecting slot %d (set %p,%p)\n",
+		 slot, set, set->nr_map);
+
+	tmp = __raw_readb(OSIRIS_VA_CTRL0);
+	tmp &= ~OSIRIS_CTRL0_NANDSEL;
+	tmp |= slot;
+
+	pr_debug("osiris_nand: ctrl0 now %02x\n", tmp);
+
+	__raw_writeb(tmp, OSIRIS_VA_CTRL0);
+}
+
+static struct s3c2410_platform_nand __initdata osiris_nand_info = {
+	.tacls		= 25,
+	.twrph0		= 60,
+	.twrph1		= 60,
+	.nr_sets	= ARRAY_SIZE(osiris_nand_sets),
+	.sets		= osiris_nand_sets,
+	.select_chip	= osiris_nand_select,
+};
+
+/* PCMCIA control and configuration */
+
+static struct resource osiris_pcmcia_resource[] = {
+	[0] = DEFINE_RES_MEM(0x0f000000, SZ_1M),
+	[1] = DEFINE_RES_MEM(0x0c000000, SZ_1M),
+};
+
+static struct platform_device osiris_pcmcia = {
+	.name		= "osiris-pcmcia",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(osiris_pcmcia_resource),
+	.resource	= osiris_pcmcia_resource,
+};
+
+/* Osiris power management device */
+
+#ifdef CONFIG_PM
+static unsigned char pm_osiris_ctrl0;
+
+static int osiris_pm_suspend(void)
+{
+	unsigned int tmp;
+
+	pm_osiris_ctrl0 = __raw_readb(OSIRIS_VA_CTRL0);
+	tmp = pm_osiris_ctrl0 & ~OSIRIS_CTRL0_NANDSEL;
+
+	/* ensure correct NAND slot is selected on resume */
+	if ((pm_osiris_ctrl0 & OSIRIS_CTRL0_BOOT_INT) == 0)
+	        tmp |= 2;
+
+	__raw_writeb(tmp, OSIRIS_VA_CTRL0);
+
+	/* ensure that an nRESET is not generated on resume. */
+	gpio_request_one(S3C2410_GPA(21), GPIOF_OUT_INIT_HIGH, NULL);
+	gpio_free(S3C2410_GPA(21));
+
+	return 0;
+}
+
+static void osiris_pm_resume(void)
+{
+	if (pm_osiris_ctrl0 & OSIRIS_CTRL0_FIX8)
+		__raw_writeb(OSIRIS_CTRL1_FIX8, OSIRIS_VA_CTRL1);
+
+	__raw_writeb(pm_osiris_ctrl0, OSIRIS_VA_CTRL0);
+
+	s3c_gpio_cfgpin(S3C2410_GPA(21), S3C2410_GPA21_nRSTOUT);
+}
+
+#else
+#define osiris_pm_suspend NULL
+#define osiris_pm_resume NULL
+#endif
+
+static struct syscore_ops osiris_pm_syscore_ops = {
+	.suspend	= osiris_pm_suspend,
+	.resume		= osiris_pm_resume,
+};
+
+/* Link for DVS driver to TPS65011 */
+
+static void osiris_tps_release(struct device *dev)
+{
+	/* static device, do not need to release anything */
+}
+
+static struct platform_device osiris_tps_device = {
+	.name	= "osiris-dvs",
+	.id	= -1,
+	.dev.release = osiris_tps_release,
+};
+
+static int osiris_tps_setup(struct i2c_client *client, void *context)
+{
+	osiris_tps_device.dev.parent = &client->dev;
+	return platform_device_register(&osiris_tps_device);
+}
+
+static int osiris_tps_remove(struct i2c_client *client, void *context)
+{
+	platform_device_unregister(&osiris_tps_device);
+	return 0;
+}
+
+static struct tps65010_board osiris_tps_board = {
+	.base		= -1,	/* GPIO can go anywhere at the moment */
+	.setup		= osiris_tps_setup,
+	.teardown	= osiris_tps_remove,
+};
+
+/* I2C devices fitted. */
+
+static struct i2c_board_info osiris_i2c_devs[] __initdata = {
+	{
+		I2C_BOARD_INFO("tps65011", 0x48),
+		.irq	= IRQ_EINT20,
+		.platform_data = &osiris_tps_board,
+	},
+};
+
+/* Standard Osiris devices */
+
+static struct platform_device *osiris_devices[] __initdata = {
+	&s3c2410_device_dclk,
+	&s3c_device_i2c0,
+	&s3c_device_wdt,
+	&s3c_device_nand,
+	&osiris_pcmcia,
+};
+
+static struct s3c_cpufreq_board __initdata osiris_cpufreq = {
+	.refresh	= 7800, /* refresh period is 7.8usec */
+	.auto_io	= 1,
+	.need_io	= 1,
+};
+
+static void __init osiris_map_io(void)
+{
+	unsigned long flags;
+
+	s3c24xx_init_io(osiris_iodesc, ARRAY_SIZE(osiris_iodesc));
+	s3c24xx_init_uarts(osiris_uartcfgs, ARRAY_SIZE(osiris_uartcfgs));
+	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
+
+	/* check for the newer revision boards with large page nand */
+
+	if ((__raw_readb(OSIRIS_VA_IDREG) & OSIRIS_ID_REVMASK) >= 4) {
+		printk(KERN_INFO "OSIRIS-B detected (revision %d)\n",
+		       __raw_readb(OSIRIS_VA_IDREG) & OSIRIS_ID_REVMASK);
+		osiris_nand_sets[0].partitions = osiris_default_nand_part_large;
+		osiris_nand_sets[0].nr_partitions = ARRAY_SIZE(osiris_default_nand_part_large);
+	} else {
+		/* write-protect line to the NAND */
+		gpio_request_one(S3C2410_GPA(0), GPIOF_OUT_INIT_HIGH, NULL);
+		gpio_free(S3C2410_GPA(0));
+	}
+
+	/* fix bus configuration (nBE settings wrong on ABLE pre v2.20) */
+
+	local_irq_save(flags);
+	__raw_writel(__raw_readl(S3C2410_BWSCON) | S3C2410_BWSCON_ST1 | S3C2410_BWSCON_ST2 | S3C2410_BWSCON_ST3 | S3C2410_BWSCON_ST4 | S3C2410_BWSCON_ST5, S3C2410_BWSCON);
+	local_irq_restore(flags);
+}
+
+static void __init osiris_init_time(void)
+{
+	s3c2440_init_clocks(12000000);
+	samsung_timer_init();
+}
+
+static void __init osiris_init(void)
+{
+	register_syscore_ops(&osiris_pm_syscore_ops);
+
+	s3c_i2c0_set_platdata(NULL);
+	s3c_nand_set_platdata(&osiris_nand_info);
+
+	s3c_cpufreq_setboard(&osiris_cpufreq);
+
+	i2c_register_board_info(0, osiris_i2c_devs,
+				ARRAY_SIZE(osiris_i2c_devs));
+
+	platform_add_devices(osiris_devices, ARRAY_SIZE(osiris_devices));
+};
+
+MACHINE_START(OSIRIS, "Simtec-OSIRIS")
+	/* Maintainer: Ben Dooks <ben@simtec.co.uk> */
+	.atag_offset	= 0x100,
+	.map_io		= osiris_map_io,
+	.init_irq	= s3c2440_init_irq,
+	.init_machine	= osiris_init,
+	.init_time	= osiris_init_time,
+MACHINE_END