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/*
* linux/arch/arm/mach-clps711x/autcpu12.c
*
* (c) 2001 Thomas Gleixner, autronix automation <gleixner@autronix.de>
*
* 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/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/ioport.h>
#include <linux/interrupt.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/plat-ram.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/nand-gpio.h>
#include <linux/platform_device.h>
#include <linux/basic_mmio_gpio.h>
#include <mach/hardware.h>
#include <asm/sizes.h>
#include <asm/setup.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/mach/map.h>
#include <mach/autcpu12.h>
#include "common.h"
#include "devices.h"
/* NOR flash */
#define AUTCPU12_FLASH_BASE (CS0_PHYS_BASE)
/* NVRAM */
#define AUTCPU12_NVRAM_BASE (CS1_PHYS_BASE + 0x02000000)
/* SmartMedia flash */
#define AUTCPU12_SMC_BASE (CS1_PHYS_BASE + 0x06000000)
#define AUTCPU12_SMC_SEL_BASE (AUTCPU12_SMC_BASE + 0x10)
/* Ethernet */
#define AUTCPU12_CS8900_BASE (CS2_PHYS_BASE + 0x300)
#define AUTCPU12_CS8900_IRQ (IRQ_EINT3)
/* NAND flash */
#define AUTCPU12_MMGPIO_BASE (CLPS711X_NR_GPIO)
#define AUTCPU12_SMC_NCE (AUTCPU12_MMGPIO_BASE + 0) /* Bit 0 */
#define AUTCPU12_SMC_RDY CLPS711X_GPIO(1, 2)
#define AUTCPU12_SMC_ALE CLPS711X_GPIO(1, 3)
#define AUTCPU12_SMC_CLE CLPS711X_GPIO(1, 3)
/* LCD contrast digital potentiometer */
#define AUTCPU12_DPOT_CS CLPS711X_GPIO(4, 0)
#define AUTCPU12_DPOT_CLK CLPS711X_GPIO(4, 1)
#define AUTCPU12_DPOT_UD CLPS711X_GPIO(4, 2)
static struct resource autcpu12_cs8900_resource[] __initdata = {
DEFINE_RES_MEM(AUTCPU12_CS8900_BASE, SZ_1K),
DEFINE_RES_IRQ(AUTCPU12_CS8900_IRQ),
};
static struct resource autcpu12_nand_resource[] __initdata = {
DEFINE_RES_MEM(AUTCPU12_SMC_BASE, SZ_16),
};
static struct mtd_partition autcpu12_nand_parts[] __initdata = {
{
.name = "Flash partition 1",
.offset = 0,
.size = SZ_8M,
},
{
.name = "Flash partition 2",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
},
};
static void __init autcpu12_adjust_parts(struct gpio_nand_platdata *pdata,
size_t sz)
{
switch (sz) {
case SZ_16M:
case SZ_32M:
break;
case SZ_64M:
case SZ_128M:
pdata->parts[0].size = SZ_16M;
break;
default:
pr_warn("Unsupported SmartMedia device size %u\n", sz);
break;
}
}
static struct gpio_nand_platdata autcpu12_nand_pdata __initdata = {
.gpio_rdy = AUTCPU12_SMC_RDY,
.gpio_nce = AUTCPU12_SMC_NCE,
.gpio_ale = AUTCPU12_SMC_ALE,
.gpio_cle = AUTCPU12_SMC_CLE,
.gpio_nwp = -1,
.chip_delay = 20,
.parts = autcpu12_nand_parts,
.num_parts = ARRAY_SIZE(autcpu12_nand_parts),
.adjust_parts = autcpu12_adjust_parts,
};
static struct platform_device autcpu12_nand_pdev __initdata = {
.name = "gpio-nand",
.id = -1,
.resource = autcpu12_nand_resource,
.num_resources = ARRAY_SIZE(autcpu12_nand_resource),
.dev = {
.platform_data = &autcpu12_nand_pdata,
},
};
static struct resource autcpu12_mmgpio_resource[] __initdata = {
DEFINE_RES_MEM_NAMED(AUTCPU12_SMC_SEL_BASE, SZ_1, "dat"),
};
static struct bgpio_pdata autcpu12_mmgpio_pdata __initdata = {
.base = AUTCPU12_MMGPIO_BASE,
.ngpio = 8,
};
static struct platform_device autcpu12_mmgpio_pdev __initdata = {
.name = "basic-mmio-gpio",
.id = -1,
.resource = autcpu12_mmgpio_resource,
.num_resources = ARRAY_SIZE(autcpu12_mmgpio_resource),
.dev = {
.platform_data = &autcpu12_mmgpio_pdata,
},
};
static const struct gpio autcpu12_gpios[] __initconst = {
{ AUTCPU12_DPOT_CS, GPIOF_OUT_INIT_HIGH, "DPOT CS" },
{ AUTCPU12_DPOT_CLK, GPIOF_OUT_INIT_LOW, "DPOT CLK" },
{ AUTCPU12_DPOT_UD, GPIOF_OUT_INIT_LOW, "DPOT UD" },
};
static struct mtd_partition autcpu12_flash_partitions[] = {
{
.name = "NOR.0",
.offset = 0,
.size = MTDPART_SIZ_FULL,
},
};
static struct physmap_flash_data autcpu12_flash_pdata = {
.width = 4,
.parts = autcpu12_flash_partitions,
.nr_parts = ARRAY_SIZE(autcpu12_flash_partitions),
};
static struct resource autcpu12_flash_resources[] __initdata = {
DEFINE_RES_MEM(AUTCPU12_FLASH_BASE, SZ_8M),
};
static struct platform_device autcpu12_flash_pdev __initdata = {
.name = "physmap-flash",
.id = 0,
.resource = autcpu12_flash_resources,
.num_resources = ARRAY_SIZE(autcpu12_flash_resources),
.dev = {
.platform_data = &autcpu12_flash_pdata,
},
};
static struct resource autcpu12_nvram_resource[] __initdata = {
DEFINE_RES_MEM(AUTCPU12_NVRAM_BASE, 0),
};
static struct platdata_mtd_ram autcpu12_nvram_pdata = {
.bankwidth = 4,
};
static struct platform_device autcpu12_nvram_pdev __initdata = {
.name = "mtd-ram",
.id = 0,
.resource = autcpu12_nvram_resource,
.num_resources = ARRAY_SIZE(autcpu12_nvram_resource),
.dev = {
.platform_data = &autcpu12_nvram_pdata,
},
};
static void __init autcpu12_nvram_init(void)
{
void __iomem *nvram;
unsigned int save[2];
resource_size_t nvram_size = SZ_128K;
/*
* Check for 32K/128K
* Read ofs 0K
* Read ofs 64K
* Write complement to ofs 64K
* Read and check result on ofs 0K
* Restore contents
*/
nvram = ioremap(autcpu12_nvram_resource[0].start, SZ_128K);
if (nvram) {
save[0] = readl(nvram + 0);
save[1] = readl(nvram + SZ_64K);
writel(~save[0], nvram + SZ_64K);
if (readl(nvram + 0) != save[0]) {
writel(save[0], nvram + 0);
nvram_size = SZ_32K;
} else
writel(save[1], nvram + SZ_64K);
iounmap(nvram);
autcpu12_nvram_resource[0].end =
autcpu12_nvram_resource[0].start + nvram_size - 1;
platform_device_register(&autcpu12_nvram_pdev);
} else
pr_err("Failed to remap NVRAM resource\n");
}
static void __init autcpu12_init(void)
{
clps711x_devices_init();
platform_device_register(&autcpu12_flash_pdev);
platform_device_register_simple("video-clps711x", 0, NULL, 0);
platform_device_register_simple("cs89x0", 0, autcpu12_cs8900_resource,
ARRAY_SIZE(autcpu12_cs8900_resource));
platform_device_register(&autcpu12_mmgpio_pdev);
autcpu12_nvram_init();
}
static void __init autcpu12_init_late(void)
{
gpio_request_array(autcpu12_gpios, ARRAY_SIZE(autcpu12_gpios));
if (IS_ENABLED(MTD_NAND_GPIO) && IS_ENABLED(GPIO_GENERIC_PLATFORM)) {
/* We are need both drivers to handle NAND */
platform_device_register(&autcpu12_nand_pdev);
}
}
MACHINE_START(AUTCPU12, "autronix autcpu12")
/* Maintainer: Thomas Gleixner */
.atag_offset = 0x20000,
.nr_irqs = CLPS711X_NR_IRQS,
.map_io = clps711x_map_io,
.init_irq = clps711x_init_irq,
.init_time = clps711x_timer_init,
.init_machine = autcpu12_init,
.init_late = autcpu12_init_late,
.handle_irq = clps711x_handle_irq,
.restart = clps711x_restart,
MACHINE_END
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