diff options
| author | Manuel Lauss <manuel.lauss@googlemail.com> | 2011-12-08 10:42:10 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2011-12-08 10:42:10 +0000 |
| commit | b67a1a02d463b5b298cc718ca971738fe20f0ab9 (patch) | |
| tree | 3523ca7826a356e1bf1a8ac878056a4fbeb73434 /arch/mips | |
| parent | 1c043f16a01c144305e952025e883b55706f2450 (diff) | |
MTD: nand: make au1550nd.c a platform_driver
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>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/alchemy/devboards/pb1550.c | 66 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-au1x00/au1550nd.h | 16 |
2 files changed, 82 insertions, 0 deletions
diff --git a/arch/mips/alchemy/devboards/pb1550.c b/arch/mips/alchemy/devboards/pb1550.c index e4a00a56a20..b37e7de8d92 100644 --- a/arch/mips/alchemy/devboards/pb1550.c +++ b/arch/mips/alchemy/devboards/pb1550.c @@ -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); diff --git a/arch/mips/include/asm/mach-au1x00/au1550nd.h b/arch/mips/include/asm/mach-au1x00/au1550nd.h new file mode 100644 index 00000000000..ad4c0a03afe --- /dev/null +++ b/arch/mips/include/asm/mach-au1x00/au1550nd.h @@ -0,0 +1,16 @@ +/* + * platform data for the Au1550 NAND driver + */ + +#ifndef _AU1550ND_H_ +#define _AU1550ND_H_ + +#include <linux/mtd/partitions.h> + +struct au1550nd_platdata { + struct mtd_partition *parts; + int num_parts; + int devwidth; /* 0 = 8bit device, 1 = 16bit device */ +}; + +#endif |