From b67a1a02d463b5b298cc718ca971738fe20f0ab9 Mon Sep 17 00:00:00 2001 From: Manuel Lauss Date: Thu, 8 Dec 2011 10:42:10 +0000 Subject: 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 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 Signed-off-by: Ralf Baechle --- arch/mips/alchemy/devboards/pb1550.c | 66 ++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) (limited to 'arch/mips/alchemy') 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 #include #include +#include #include #include #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); -- cgit v1.2.3