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ARM: clps711x: cdb89712: Special driver for handling memory is removed

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This patch provide migration to using "physmap-flash" and "mtd-ram"
drivers instead of using special driver for handling memory.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Alexander Shiyan 2012-11-17 17:57:12 +04:00 committed by Olof Johansson
parent ea7d1bc97d
commit 86449336dd
5 changed files with 87 additions and 286 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

84
arch/arm/mach-clps711x/cdb89712.c
View File

@ -26,6 +26,10 @@
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/plat-ram.h>
#include <linux/mtd/partitions.h>
#include <mach/hardware.h>
#include <asm/pgtable.h>
#include <asm/page.h>
@ -44,8 +48,88 @@ static struct resource cdb89712_cs8900_resource[] __initdata = {
DEFINE_RES_IRQ(CDB89712_CS8900_IRQ),
};
static struct mtd_partition cdb89712_flash_partitions[] __initdata = {
{
.name = "Flash",
.offset = 0,
.size = MTDPART_SIZ_FULL,
},
};
static struct physmap_flash_data cdb89712_flash_pdata __initdata = {
.width = 4,
.probe_type = "map_rom",
.parts = cdb89712_flash_partitions,
.nr_parts = ARRAY_SIZE(cdb89712_flash_partitions),
};
static struct resource cdb89712_flash_resources[] __initdata = {
DEFINE_RES_MEM(CS0_PHYS_BASE, SZ_8M),
};
static struct platform_device cdb89712_flash_pdev __initdata = {
.name = "physmap-flash",
.id = 0,
.resource = cdb89712_flash_resources,
.num_resources = ARRAY_SIZE(cdb89712_flash_resources),
.dev = {
.platform_data = &cdb89712_flash_pdata,
},
};
static struct mtd_partition cdb89712_bootrom_partitions[] __initdata = {
{
.name = "BootROM",
.offset = 0,
.size = MTDPART_SIZ_FULL,
},
};
static struct physmap_flash_data cdb89712_bootrom_pdata __initdata = {
.width = 4,
.probe_type = "map_rom",
.parts = cdb89712_bootrom_partitions,
.nr_parts = ARRAY_SIZE(cdb89712_bootrom_partitions),
};
static struct resource cdb89712_bootrom_resources[] __initdata = {
DEFINE_RES_NAMED(CS7_PHYS_BASE, SZ_128, "BOOTROM", IORESOURCE_MEM |
IORESOURCE_CACHEABLE | IORESOURCE_READONLY),
};
static struct platform_device cdb89712_bootrom_pdev __initdata = {
.name = "physmap-flash",
.id = 1,
.resource = cdb89712_bootrom_resources,
.num_resources = ARRAY_SIZE(cdb89712_bootrom_resources),
.dev = {
.platform_data = &cdb89712_bootrom_pdata,
},
};
static struct platdata_mtd_ram cdb89712_sram_pdata __initdata = {
.bankwidth = 4,
};
static struct resource cdb89712_sram_resources[] __initdata = {
DEFINE_RES_MEM(CLPS711X_SRAM_BASE, CLPS711X_SRAM_SIZE),
};
static struct platform_device cdb89712_sram_pdev __initdata = {
.name = "mtd-ram",
.id = 0,
.resource = cdb89712_sram_resources,
.num_resources = ARRAY_SIZE(cdb89712_sram_resources),
.dev = {
.platform_data = &cdb89712_sram_pdata,
},
};
static void __init cdb89712_init(void)
{
platform_device_register(&cdb89712_flash_pdev);
platform_device_register(&cdb89712_bootrom_pdev);
platform_device_register(&cdb89712_sram_pdev);
platform_device_register_simple("cs89x0", 0, cdb89712_cs8900_resource,
ARRAY_SIZE(cdb89712_cs8900_resource));
}

3
arch/arm/mach-clps711x/include/mach/hardware.h
View File

@ -64,6 +64,9 @@
#define CS7_PHYS_BASE (0x00000000)
#endif
#define CLPS711X_SRAM_BASE CS6_PHYS_BASE
#define CLPS711X_SRAM_SIZE (48 * 1024)
#if defined (CONFIG_ARCH_EDB7211)
/* The extra 8 lines of the keyboard matrix are wired to chip select 3 */

7
drivers/mtd/maps/Kconfig
View File

@ -324,13 +324,6 @@ config MTD_SOLUTIONENGINE
This enables access to the flash chips on the Hitachi SolutionEngine and
similar boards. Say 'Y' if you are building a kernel for such a board.
config MTD_CDB89712
tristate "Cirrus CDB89712 evaluation board mappings"
depends on MTD_CFI && ARCH_CDB89712
help
This enables access to the flash or ROM chips on the CDB89712 board.
If you have such a board, say 'Y'.
config MTD_SA1100
tristate "CFI Flash device mapped on StrongARM SA11x0"
depends on MTD_CFI && ARCH_SA1100

1
drivers/mtd/maps/Makefile
View File

@ -7,7 +7,6 @@ obj-$(CONFIG_MTD) += map_funcs.o
endif
# Chip mappings
obj-$(CONFIG_MTD_CDB89712) += cdb89712.o
obj-$(CONFIG_MTD_CFI_FLAGADM) += cfi_flagadm.o
obj-$(CONFIG_MTD_DC21285) += dc21285.o
obj-$(CONFIG_MTD_DILNETPC) += dilnetpc.o

278
drivers/mtd/maps/cdb89712.c
View File

@ -1,278 +0,0 @@
/*
* Flash on Cirrus CDB89712
*
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <asm/io.h>
#include <mach/hardware.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>
/* dynamic ioremap() areas */
#define FLASH_START 0x00000000
#define FLASH_SIZE 0x800000
#define FLASH_WIDTH 4
#define SRAM_START 0x60000000
#define SRAM_SIZE 0xc000
#define SRAM_WIDTH 4
#define BOOTROM_START 0x70000000
#define BOOTROM_SIZE 0x80
#define BOOTROM_WIDTH 4
static struct mtd_info *flash_mtd;
struct map_info cdb89712_flash_map = {
.name = "flash",
.size = FLASH_SIZE,
.bankwidth = FLASH_WIDTH,
.phys = FLASH_START,
};
struct resource cdb89712_flash_resource = {
.name = "Flash",
.start = FLASH_START,
.end = FLASH_START + FLASH_SIZE - 1,
.flags = IORESOURCE_IO | IORESOURCE_BUSY,
};
static int __init init_cdb89712_flash (void)
{
int err;
if (request_resource (&ioport_resource, &cdb89712_flash_resource)) {
printk(KERN_NOTICE "Failed to reserve Cdb89712 FLASH space\n");
err = -EBUSY;
goto out;
}
cdb89712_flash_map.virt = ioremap(FLASH_START, FLASH_SIZE);
if (!cdb89712_flash_map.virt) {
printk(KERN_NOTICE "Failed to ioremap Cdb89712 FLASH space\n");
err = -EIO;
goto out_resource;
}
simple_map_init(&cdb89712_flash_map);
flash_mtd = do_map_probe("cfi_probe", &cdb89712_flash_map);
if (!flash_mtd) {
flash_mtd = do_map_probe("map_rom", &cdb89712_flash_map);
if (flash_mtd)
flash_mtd->erasesize = 0x10000;
}
if (!flash_mtd) {
printk("FLASH probe failed\n");
err = -ENXIO;
goto out_ioremap;
}
flash_mtd->owner = THIS_MODULE;
if (mtd_device_register(flash_mtd, NULL, 0)) {
printk("FLASH device addition failed\n");
err = -ENOMEM;
goto out_probe;
}
return 0;
out_probe:
map_destroy(flash_mtd);
flash_mtd = 0;
out_ioremap:
iounmap((void *)cdb89712_flash_map.virt);
out_resource:
release_resource (&cdb89712_flash_resource);
out:
return err;
}
static struct mtd_info *sram_mtd;
struct map_info cdb89712_sram_map = {
.name = "SRAM",
.size = SRAM_SIZE,
.bankwidth = SRAM_WIDTH,
.phys = SRAM_START,
};
struct resource cdb89712_sram_resource = {
.name = "SRAM",
.start = SRAM_START,
.end = SRAM_START + SRAM_SIZE - 1,
.flags = IORESOURCE_IO | IORESOURCE_BUSY,
};
static int __init init_cdb89712_sram (void)
{
int err;
if (request_resource (&ioport_resource, &cdb89712_sram_resource)) {
printk(KERN_NOTICE "Failed to reserve Cdb89712 SRAM space\n");
err = -EBUSY;
goto out;
}
cdb89712_sram_map.virt = ioremap(SRAM_START, SRAM_SIZE);
if (!cdb89712_sram_map.virt) {
printk(KERN_NOTICE "Failed to ioremap Cdb89712 SRAM space\n");
err = -EIO;
goto out_resource;
}
simple_map_init(&cdb89712_sram_map);
sram_mtd = do_map_probe("map_ram", &cdb89712_sram_map);
if (!sram_mtd) {
printk("SRAM probe failed\n");
err = -ENXIO;
goto out_ioremap;
}
sram_mtd->owner = THIS_MODULE;
sram_mtd->erasesize = 16;
if (mtd_device_register(sram_mtd, NULL, 0)) {
printk("SRAM device addition failed\n");
err = -ENOMEM;
goto out_probe;
}
return 0;
out_probe:
map_destroy(sram_mtd);
sram_mtd = 0;
out_ioremap:
iounmap((void *)cdb89712_sram_map.virt);
out_resource:
release_resource (&cdb89712_sram_resource);
out:
return err;
}
static struct mtd_info *bootrom_mtd;
struct map_info cdb89712_bootrom_map = {
.name = "BootROM",
.size = BOOTROM_SIZE,
.bankwidth = BOOTROM_WIDTH,
.phys = BOOTROM_START,
};
struct resource cdb89712_bootrom_resource = {
.name = "BootROM",
.start = BOOTROM_START,
.end = BOOTROM_START + BOOTROM_SIZE - 1,
.flags = IORESOURCE_IO | IORESOURCE_BUSY,
};
static int __init init_cdb89712_bootrom (void)
{
int err;
if (request_resource (&ioport_resource, &cdb89712_bootrom_resource)) {
printk(KERN_NOTICE "Failed to reserve Cdb89712 BOOTROM space\n");
err = -EBUSY;
goto out;
}
cdb89712_bootrom_map.virt = ioremap(BOOTROM_START, BOOTROM_SIZE);
if (!cdb89712_bootrom_map.virt) {
printk(KERN_NOTICE "Failed to ioremap Cdb89712 BootROM space\n");
err = -EIO;
goto out_resource;
}
simple_map_init(&cdb89712_bootrom_map);
bootrom_mtd = do_map_probe("map_rom", &cdb89712_bootrom_map);
if (!bootrom_mtd) {
printk("BootROM probe failed\n");
err = -ENXIO;
goto out_ioremap;
}
bootrom_mtd->owner = THIS_MODULE;
bootrom_mtd->erasesize = 0x10000;
if (mtd_device_register(bootrom_mtd, NULL, 0)) {
printk("BootROM device addition failed\n");
err = -ENOMEM;
goto out_probe;
}
return 0;
out_probe:
map_destroy(bootrom_mtd);
bootrom_mtd = 0;
out_ioremap:
iounmap((void *)cdb89712_bootrom_map.virt);
out_resource:
release_resource (&cdb89712_bootrom_resource);
out:
return err;
}
static int __init init_cdb89712_maps(void)
{
printk(KERN_INFO "Cirrus CDB89712 MTD mappings:\n Flash 0x%x at 0x%x\n SRAM 0x%x at 0x%x\n BootROM 0x%x at 0x%x\n",
FLASH_SIZE, FLASH_START, SRAM_SIZE, SRAM_START, BOOTROM_SIZE, BOOTROM_START);
init_cdb89712_flash();
init_cdb89712_sram();
init_cdb89712_bootrom();
return 0;
}
static void __exit cleanup_cdb89712_maps(void)
{
if (sram_mtd) {
mtd_device_unregister(sram_mtd);
map_destroy(sram_mtd);
iounmap((void *)cdb89712_sram_map.virt);
release_resource (&cdb89712_sram_resource);
}
if (flash_mtd) {
mtd_device_unregister(flash_mtd);
map_destroy(flash_mtd);
iounmap((void *)cdb89712_flash_map.virt);
release_resource (&cdb89712_flash_resource);
}
if (bootrom_mtd) {
mtd_device_unregister(bootrom_mtd);
map_destroy(bootrom_mtd);
iounmap((void *)cdb89712_bootrom_map.virt);
release_resource (&cdb89712_bootrom_resource);
}
}
module_init(init_cdb89712_maps);
module_exit(cleanup_cdb89712_maps);
MODULE_AUTHOR("Ray L");
MODULE_DESCRIPTION("ARM CDB89712 map driver");
MODULE_LICENSE("GPL");