diff options
author | Marek Vasut <marek.vasut@gmail.com> | 2009-07-18 16:51:41 +0200 |
---|---|---|
committer | Eric Miao <eric.y.miao@gmail.com> | 2009-09-10 18:49:35 +0800 |
commit | 3eb37ff06ba189ce386d582179fc9abd37a92405 (patch) | |
tree | db113f5794417d7b04730e7cbd3b427e506392a6 /arch/arm/mach-pxa/palmtx.c | |
parent | d7c307cfe76ae0c0493fbdac417ef6e30221f61b (diff) | |
download | linux-3eb37ff06ba189ce386d582179fc9abd37a92405.tar.gz linux-3eb37ff06ba189ce386d582179fc9abd37a92405.tar.bz2 linux-3eb37ff06ba189ce386d582179fc9abd37a92405.zip |
[ARM] pxa/palm: add NAND Flash support for PalmTX
This patch adds support for NAND chip found in PalmTX handheld. Support
is implemented through the gen_nand driver.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Diffstat (limited to 'arch/arm/mach-pxa/palmtx.c')
-rw-r--r-- | arch/arm/mach-pxa/palmtx.c | 83 |
1 files changed, 81 insertions, 2 deletions
diff --git a/arch/arm/mach-pxa/palmtx.c b/arch/arm/mach-pxa/palmtx.c index fffa32a6fa3f..052f99863dab 100644 --- a/arch/arm/mach-pxa/palmtx.c +++ b/arch/arm/mach-pxa/palmtx.c @@ -28,6 +28,8 @@ #include <linux/wm97xx_batt.h> #include <linux/power_supply.h> #include <linux/usb/gpio_vbus.h> +#include <linux/mtd/nand.h> +#include <linux/mtd/partitions.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> @@ -131,6 +133,10 @@ static unsigned long palmtx_pin_config[] __initdata = { GPIO34_FFUART_RXD, GPIO39_FFUART_TXD, + /* NAND */ + GPIO15_nCS_1, + GPIO18_RDY, + /* MISC. */ GPIO10_GPIO, /* hotsync button */ GPIO12_GPIO, /* power detect */ @@ -422,6 +428,68 @@ static struct pxafb_mach_info palmtx_lcd_screen = { }; /****************************************************************************** + * NAND Flash + ******************************************************************************/ +static void palmtx_nand_cmd_ctl(struct mtd_info *mtd, int cmd, + unsigned int ctrl) +{ + struct nand_chip *this = mtd->priv; + unsigned long nandaddr = (unsigned long)this->IO_ADDR_W; + + if (cmd == NAND_CMD_NONE) + return; + + if (ctrl & NAND_CLE) + writeb(cmd, PALMTX_NAND_CLE_VIRT); + else if (ctrl & NAND_ALE) + writeb(cmd, PALMTX_NAND_ALE_VIRT); + else + writeb(cmd, nandaddr); +} + +static struct mtd_partition palmtx_partition_info[] = { + [0] = { + .name = "palmtx-0", + .offset = 0, + .size = MTDPART_SIZ_FULL + }, +}; + +static const char *palmtx_part_probes[] = { "cmdlinepart", NULL }; + +struct platform_nand_data palmtx_nand_platdata = { + .chip = { + .nr_chips = 1, + .chip_offset = 0, + .nr_partitions = ARRAY_SIZE(palmtx_partition_info), + .partitions = palmtx_partition_info, + .chip_delay = 20, + .part_probe_types = palmtx_part_probes, + }, + .ctrl = { + .cmd_ctrl = palmtx_nand_cmd_ctl, + }, +}; + +static struct resource palmtx_nand_resource[] = { + [0] = { + .start = PXA_CS1_PHYS, + .end = PXA_CS1_PHYS + SZ_1M - 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device palmtx_nand = { + .name = "gen_nand", + .num_resources = ARRAY_SIZE(palmtx_nand_resource), + .resource = palmtx_nand_resource, + .id = -1, + .dev = { + .platform_data = &palmtx_nand_platdata, + } +}; + +/****************************************************************************** * Power management - standby ******************************************************************************/ static void __init palmtx_pm_init(void) @@ -447,6 +515,7 @@ static struct platform_device *devices[] __initdata = { &power_supply, &palmtx_asoc, &palmtx_gpio_vbus, + &palmtx_nand, }; static struct map_desc palmtx_io_desc[] __initdata = { @@ -454,8 +523,18 @@ static struct map_desc palmtx_io_desc[] __initdata = { .virtual = PALMTX_PCMCIA_VIRT, .pfn = __phys_to_pfn(PALMTX_PCMCIA_PHYS), .length = PALMTX_PCMCIA_SIZE, - .type = MT_DEVICE -}, + .type = MT_DEVICE, +}, { + .virtual = PALMTX_NAND_ALE_VIRT, + .pfn = __phys_to_pfn(PALMTX_NAND_ALE_PHYS), + .length = SZ_1M, + .type = MT_DEVICE, +}, { + .virtual = PALMTX_NAND_CLE_VIRT, + .pfn = __phys_to_pfn(PALMTX_NAND_CLE_PHYS), + .length = SZ_1M, + .type = MT_DEVICE, +} }; static void __init palmtx_map_io(void) |