diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-01 09:15:15 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-01 09:15:15 -0800 |
commit | ac0f6f927db539e03e1f3f61bcd4ed57d5cde7a9 (patch) | |
tree | 816e5ac643b15c2050c64a7075f0f7e13d86ea09 /arch/arm/mach-ep93xx/snappercl15.c | |
parent | b1bf9368407ae7e89d8a005bb40beb70a41df539 (diff) | |
parent | 9f33be2c3a80bdc2cc08342dd77fac87652e0548 (diff) |
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (100 commits)
ARM: Eliminate decompressor -Dstatic= PIC hack
ARM: 5958/1: ARM: U300: fix inverted clk round rate
ARM: 5956/1: misplaced parentheses
ARM: 5955/1: ep93xx: move timer defines into core.c and document
ARM: 5954/1: ep93xx: move gpio interrupt support to gpio.c
ARM: 5953/1: ep93xx: fix broken build of clock.c
ARM: 5952/1: ARM: MM: Add ARM_L1_CACHE_SHIFT_6 for handle inside each ARCH Kconfig
ARM: 5949/1: NUC900 add gpio virtual memory map
ARM: 5948/1: Enable timer0 to time4 clock support for nuc910
ARM: 5940/2: ARM: MMCI: remove custom DBG macro and printk
ARM: make_coherent(): fix problems with highpte, part 2
MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself
ARM: 5945/1: ep93xx: include correct irq.h in core.c
ARM: 5933/1: amba-pl011: support hardware flow control
ARM: 5930/1: Add PKMAP area description to memory.txt.
ARM: 5929/1: Add checks to detect overlap of memory regions.
ARM: 5928/1: Change type of VMALLOC_END to unsigned long.
ARM: 5927/1: Make delimiters of DMA area globally visibly.
ARM: 5926/1: Add "Virtual kernel memory..." printout.
ARM: 5920/1: OMAP4: Enable L2 Cache
...
Fix up trivial conflict in arch/arm/mach-mx25/clock.c
Diffstat (limited to 'arch/arm/mach-ep93xx/snappercl15.c')
-rw-r--r-- | arch/arm/mach-ep93xx/snappercl15.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/arch/arm/mach-ep93xx/snappercl15.c b/arch/arm/mach-ep93xx/snappercl15.c new file mode 100644 index 00000000000..51134b0382c --- /dev/null +++ b/arch/arm/mach-ep93xx/snappercl15.c @@ -0,0 +1,172 @@ +/* + * arch/arm/mach-ep93xx/snappercl15.c + * Bluewater Systems Snapper CL15 system module + * + * Copyright (C) 2009 Bluewater Systems Ltd + * Author: Ryan Mallon <ryan@bluewatersys.com> + * + * NAND code adapted from driver by: + * Andre Renaud <andre@bluewatersys.com> + * James R. McKaskill + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or (at + * your option) any later version. + * + */ + +#include <linux/platform_device.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/gpio.h> +#include <linux/i2c.h> +#include <linux/i2c-gpio.h> +#include <linux/fb.h> + +#include <linux/mtd/partitions.h> +#include <linux/mtd/nand.h> + +#include <mach/hardware.h> +#include <mach/fb.h> + +#include <asm/mach-types.h> +#include <asm/mach/arch.h> + +#define SNAPPERCL15_NAND_BASE (EP93XX_CS7_PHYS_BASE + SZ_16M) + +#define SNAPPERCL15_NAND_WPN (1 << 8) /* Write protect (active low) */ +#define SNAPPERCL15_NAND_ALE (1 << 9) /* Address latch */ +#define SNAPPERCL15_NAND_CLE (1 << 10) /* Command latch */ +#define SNAPPERCL15_NAND_CEN (1 << 11) /* Chip enable (active low) */ +#define SNAPPERCL15_NAND_RDY (1 << 14) /* Device ready */ + +#define NAND_CTRL_ADDR(chip) (chip->IO_ADDR_W + 0x40) + +static void snappercl15_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, + unsigned int ctrl) +{ + struct nand_chip *chip = mtd->priv; + static u16 nand_state = SNAPPERCL15_NAND_WPN; + u16 set; + + if (ctrl & NAND_CTRL_CHANGE) { + set = SNAPPERCL15_NAND_CEN | SNAPPERCL15_NAND_WPN; + + if (ctrl & NAND_NCE) + set &= ~SNAPPERCL15_NAND_CEN; + if (ctrl & NAND_CLE) + set |= SNAPPERCL15_NAND_CLE; + if (ctrl & NAND_ALE) + set |= SNAPPERCL15_NAND_ALE; + + nand_state &= ~(SNAPPERCL15_NAND_CEN | + SNAPPERCL15_NAND_CLE | + SNAPPERCL15_NAND_ALE); + nand_state |= set; + __raw_writew(nand_state, NAND_CTRL_ADDR(chip)); + } + + if (cmd != NAND_CMD_NONE) + __raw_writew((cmd & 0xff) | nand_state, chip->IO_ADDR_W); +} + +static int snappercl15_nand_dev_ready(struct mtd_info *mtd) +{ + struct nand_chip *chip = mtd->priv; + + return !!(__raw_readw(NAND_CTRL_ADDR(chip)) & SNAPPERCL15_NAND_RDY); +} + +static const char *snappercl15_nand_part_probes[] = {"cmdlinepart", NULL}; + +static struct mtd_partition snappercl15_nand_parts[] = { + { + .name = "Kernel", + .offset = 0, + .size = SZ_2M, + }, + { + .name = "Filesystem", + .offset = MTDPART_OFS_APPEND, + .size = MTDPART_SIZ_FULL, + }, +}; + +static struct platform_nand_data snappercl15_nand_data = { + .chip = { + .nr_chips = 1, + .part_probe_types = snappercl15_nand_part_probes, + .partitions = snappercl15_nand_parts, + .nr_partitions = ARRAY_SIZE(snappercl15_nand_parts), + .options = NAND_NO_AUTOINCR, + .chip_delay = 25, + }, + .ctrl = { + .dev_ready = snappercl15_nand_dev_ready, + .cmd_ctrl = snappercl15_nand_cmd_ctrl, + }, +}; + +static struct resource snappercl15_nand_resource[] = { + { + .start = SNAPPERCL15_NAND_BASE, + .end = SNAPPERCL15_NAND_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device snappercl15_nand_device = { + .name = "gen_nand", + .id = -1, + .dev.platform_data = &snappercl15_nand_data, + .resource = snappercl15_nand_resource, + .num_resources = ARRAY_SIZE(snappercl15_nand_resource), +}; + +static struct ep93xx_eth_data snappercl15_eth_data = { + .phy_id = 1, +}; + +static struct i2c_gpio_platform_data snappercl15_i2c_gpio_data = { + .sda_pin = EP93XX_GPIO_LINE_EEDAT, + .sda_is_open_drain = 0, + .scl_pin = EP93XX_GPIO_LINE_EECLK, + .scl_is_open_drain = 0, + .udelay = 0, + .timeout = 0, +}; + +static struct i2c_board_info __initdata snappercl15_i2c_data[] = { + { + /* Audio codec */ + I2C_BOARD_INFO("tlv320aic23", 0x1a), + }, +}; + +static struct ep93xxfb_mach_info snappercl15_fb_info = { + .num_modes = EP93XXFB_USE_MODEDB, + .bpp = 16, +}; + +static void __init snappercl15_init_machine(void) +{ + ep93xx_init_devices(); + ep93xx_register_eth(&snappercl15_eth_data, 1); + ep93xx_register_i2c(&snappercl15_i2c_gpio_data, snappercl15_i2c_data, + ARRAY_SIZE(snappercl15_i2c_data)); + ep93xx_register_fb(&snappercl15_fb_info); + platform_device_register(&snappercl15_nand_device); +} + +MACHINE_START(SNAPPER_CL15, "Bluewater Systems Snapper CL15") + /* Maintainer: Ryan Mallon <ryan@bluewatersys.com> */ + .phys_io = EP93XX_APB_PHYS_BASE, + .io_pg_offst = ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc, + .boot_params = EP93XX_SDCE0_PHYS_BASE + 0x100, + .map_io = ep93xx_map_io, + .init_irq = ep93xx_init_irq, + .timer = &ep93xx_timer, + .init_machine = snappercl15_init_machine, +MACHINE_END |