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MTD: nand: make au1550nd.c a platform_driver

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Transform the au1550nd.c driver into a platform_driver and hook it
up in the PB1550 board (gen_nand works fine on the DB1550, but since
I don't have a PB1550 to test this driver stays for now).

Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
Cc: linux-mtd@lists.infradead.org
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2875/
Patchwork: https://patchwork.linux-mips.org/patch/3160/
Acked-by: Artem Bityutskiy <dedekind1@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Manuel Lauss
2011-12-08 10:42:10 +00:00
committed by Ralf Baechle
parent 1c043f16a0
commit b67a1a02d4
3 changed files with 207 additions and 177 deletions
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66
arch/mips/alchemy/devboards/pb1550.c
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@@ -24,6 +24,7 @@
#include <linux/platform_device.h>
#include <asm/mach-au1x00/au1000.h>
#include <asm/mach-au1x00/au1xxx_dbdma.h>
#include <asm/mach-au1x00/au1550nd.h>
#include <asm/mach-au1x00/gpio.h>
#include <asm/mach-db1x00/bcsr.h>
#include "platform.h"
@@ -131,6 +132,67 @@ static struct platform_device pb1550_i2c_dev = {
.resource = au1550_psc2_res,
};
static struct mtd_partition pb1550_nand_parts[] = {
[0] = {
.name = "NAND FS 0",
.offset = 0,
.size = 8 * 1024 * 1024,
},
[1] = {
.name = "NAND FS 1",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
},
};
static struct au1550nd_platdata pb1550_nand_pd = {
.parts = pb1550_nand_parts,
.num_parts = ARRAY_SIZE(pb1550_nand_parts),
.devwidth = 0, /* x8 NAND default, needs fixing up */
};
static struct resource pb1550_nand_res[] = {
[0] = {
.start = 0x20000000,
.end = 0x20000fff,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device pb1550_nand_dev = {
.name = "au1550-nand",
.id = -1,
.resource = pb1550_nand_res,
.num_resources = ARRAY_SIZE(pb1550_nand_res),
.dev = {
.platform_data = &pb1550_nand_pd,
},
};
static void __init pb1550_nand_setup(void)
{
int boot_swapboot = (au_readl(MEM_STSTAT) & (0x7 << 1)) |
((bcsr_read(BCSR_STATUS) >> 6) & 0x1);
switch (boot_swapboot) {
case 0:
case 2:
case 8:
case 0xC:
case 0xD:
/* x16 NAND Flash */
pb1550_nand_pd.devwidth = 1;
/* fallthrough */
case 1:
case 9:
case 3:
case 0xE:
case 0xF:
/* x8 NAND, already set up */
platform_device_register(&pb1550_nand_dev);
}
}
static int __init pb1550_dev_init(void)
{
int swapped;
@@ -168,6 +230,10 @@ static int __init pb1550_dev_init(void)
AU1000_PCMCIA_IO_PHYS_ADDR + 0x008010000 - 1,
AU1550_GPIO201_205_INT, AU1550_GPIO1_INT, 0, 0, 1);
/* NAND setup */
gpio_direction_input(206); /* GPIO206 high */
pb1550_nand_setup();
swapped = bcsr_read(BCSR_STATUS) & BCSR_STATUS_PB1550_SWAPBOOT;
db1x_register_norflash(128 * 1024 * 1024, 4, swapped);
platform_device_register(&pb1550_pci_host);