Ryan Mallon | dd2ac96 | 2010-02-15 01:16:01 +0100 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-ep93xx/snappercl15.c |
| 3 | * Bluewater Systems Snapper CL15 system module |
| 4 | * |
| 5 | * Copyright (C) 2009 Bluewater Systems Ltd |
Ryan Mallon | 1c5454e | 2011-06-15 14:45:36 +1000 | [diff] [blame] | 6 | * Author: Ryan Mallon |
Ryan Mallon | dd2ac96 | 2010-02-15 01:16:01 +0100 | [diff] [blame] | 7 | * |
| 8 | * NAND code adapted from driver by: |
| 9 | * Andre Renaud <andre@bluewatersys.com> |
| 10 | * James R. McKaskill |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License as published by |
| 14 | * the Free Software Foundation; either version 2 of the License, or (at |
| 15 | * your option) any later version. |
| 16 | * |
| 17 | */ |
| 18 | |
| 19 | #include <linux/platform_device.h> |
| 20 | #include <linux/kernel.h> |
| 21 | #include <linux/init.h> |
| 22 | #include <linux/io.h> |
| 23 | #include <linux/gpio.h> |
| 24 | #include <linux/i2c.h> |
| 25 | #include <linux/i2c-gpio.h> |
| 26 | #include <linux/fb.h> |
| 27 | |
| 28 | #include <linux/mtd/partitions.h> |
| 29 | #include <linux/mtd/nand.h> |
| 30 | |
| 31 | #include <mach/hardware.h> |
| 32 | #include <mach/fb.h> |
| 33 | |
| 34 | #include <asm/mach-types.h> |
| 35 | #include <asm/mach/arch.h> |
| 36 | |
| 37 | #define SNAPPERCL15_NAND_BASE (EP93XX_CS7_PHYS_BASE + SZ_16M) |
| 38 | |
| 39 | #define SNAPPERCL15_NAND_WPN (1 << 8) /* Write protect (active low) */ |
| 40 | #define SNAPPERCL15_NAND_ALE (1 << 9) /* Address latch */ |
| 41 | #define SNAPPERCL15_NAND_CLE (1 << 10) /* Command latch */ |
| 42 | #define SNAPPERCL15_NAND_CEN (1 << 11) /* Chip enable (active low) */ |
| 43 | #define SNAPPERCL15_NAND_RDY (1 << 14) /* Device ready */ |
| 44 | |
| 45 | #define NAND_CTRL_ADDR(chip) (chip->IO_ADDR_W + 0x40) |
| 46 | |
| 47 | static void snappercl15_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, |
| 48 | unsigned int ctrl) |
| 49 | { |
| 50 | struct nand_chip *chip = mtd->priv; |
| 51 | static u16 nand_state = SNAPPERCL15_NAND_WPN; |
| 52 | u16 set; |
| 53 | |
| 54 | if (ctrl & NAND_CTRL_CHANGE) { |
| 55 | set = SNAPPERCL15_NAND_CEN | SNAPPERCL15_NAND_WPN; |
| 56 | |
| 57 | if (ctrl & NAND_NCE) |
| 58 | set &= ~SNAPPERCL15_NAND_CEN; |
| 59 | if (ctrl & NAND_CLE) |
| 60 | set |= SNAPPERCL15_NAND_CLE; |
| 61 | if (ctrl & NAND_ALE) |
| 62 | set |= SNAPPERCL15_NAND_ALE; |
| 63 | |
| 64 | nand_state &= ~(SNAPPERCL15_NAND_CEN | |
| 65 | SNAPPERCL15_NAND_CLE | |
| 66 | SNAPPERCL15_NAND_ALE); |
| 67 | nand_state |= set; |
| 68 | __raw_writew(nand_state, NAND_CTRL_ADDR(chip)); |
| 69 | } |
| 70 | |
| 71 | if (cmd != NAND_CMD_NONE) |
| 72 | __raw_writew((cmd & 0xff) | nand_state, chip->IO_ADDR_W); |
| 73 | } |
| 74 | |
| 75 | static int snappercl15_nand_dev_ready(struct mtd_info *mtd) |
| 76 | { |
| 77 | struct nand_chip *chip = mtd->priv; |
| 78 | |
| 79 | return !!(__raw_readw(NAND_CTRL_ADDR(chip)) & SNAPPERCL15_NAND_RDY); |
| 80 | } |
| 81 | |
| 82 | static const char *snappercl15_nand_part_probes[] = {"cmdlinepart", NULL}; |
| 83 | |
| 84 | static struct mtd_partition snappercl15_nand_parts[] = { |
| 85 | { |
| 86 | .name = "Kernel", |
| 87 | .offset = 0, |
| 88 | .size = SZ_2M, |
| 89 | }, |
| 90 | { |
| 91 | .name = "Filesystem", |
| 92 | .offset = MTDPART_OFS_APPEND, |
| 93 | .size = MTDPART_SIZ_FULL, |
| 94 | }, |
| 95 | }; |
| 96 | |
| 97 | static struct platform_nand_data snappercl15_nand_data = { |
| 98 | .chip = { |
| 99 | .nr_chips = 1, |
| 100 | .part_probe_types = snappercl15_nand_part_probes, |
| 101 | .partitions = snappercl15_nand_parts, |
| 102 | .nr_partitions = ARRAY_SIZE(snappercl15_nand_parts), |
| 103 | .options = NAND_NO_AUTOINCR, |
| 104 | .chip_delay = 25, |
| 105 | }, |
| 106 | .ctrl = { |
| 107 | .dev_ready = snappercl15_nand_dev_ready, |
| 108 | .cmd_ctrl = snappercl15_nand_cmd_ctrl, |
| 109 | }, |
| 110 | }; |
| 111 | |
| 112 | static struct resource snappercl15_nand_resource[] = { |
| 113 | { |
| 114 | .start = SNAPPERCL15_NAND_BASE, |
| 115 | .end = SNAPPERCL15_NAND_BASE + SZ_4K - 1, |
| 116 | .flags = IORESOURCE_MEM, |
| 117 | }, |
| 118 | }; |
| 119 | |
| 120 | static struct platform_device snappercl15_nand_device = { |
| 121 | .name = "gen_nand", |
| 122 | .id = -1, |
| 123 | .dev.platform_data = &snappercl15_nand_data, |
| 124 | .resource = snappercl15_nand_resource, |
| 125 | .num_resources = ARRAY_SIZE(snappercl15_nand_resource), |
| 126 | }; |
| 127 | |
Hartley Sweeten | b370e08 | 2010-03-18 18:04:06 +0100 | [diff] [blame] | 128 | static struct ep93xx_eth_data __initdata snappercl15_eth_data = { |
Ryan Mallon | dd2ac96 | 2010-02-15 01:16:01 +0100 | [diff] [blame] | 129 | .phy_id = 1, |
| 130 | }; |
| 131 | |
Hartley Sweeten | b370e08 | 2010-03-18 18:04:06 +0100 | [diff] [blame] | 132 | static struct i2c_gpio_platform_data __initdata snappercl15_i2c_gpio_data = { |
Ryan Mallon | dd2ac96 | 2010-02-15 01:16:01 +0100 | [diff] [blame] | 133 | .sda_pin = EP93XX_GPIO_LINE_EEDAT, |
| 134 | .sda_is_open_drain = 0, |
| 135 | .scl_pin = EP93XX_GPIO_LINE_EECLK, |
| 136 | .scl_is_open_drain = 0, |
| 137 | .udelay = 0, |
| 138 | .timeout = 0, |
| 139 | }; |
| 140 | |
| 141 | static struct i2c_board_info __initdata snappercl15_i2c_data[] = { |
| 142 | { |
| 143 | /* Audio codec */ |
| 144 | I2C_BOARD_INFO("tlv320aic23", 0x1a), |
| 145 | }, |
| 146 | }; |
| 147 | |
Hartley Sweeten | b370e08 | 2010-03-18 18:04:06 +0100 | [diff] [blame] | 148 | static struct ep93xxfb_mach_info __initdata snappercl15_fb_info = { |
Ryan Mallon | dd2ac96 | 2010-02-15 01:16:01 +0100 | [diff] [blame] | 149 | .num_modes = EP93XXFB_USE_MODEDB, |
| 150 | .bpp = 16, |
| 151 | }; |
| 152 | |
| 153 | static void __init snappercl15_init_machine(void) |
| 154 | { |
| 155 | ep93xx_init_devices(); |
| 156 | ep93xx_register_eth(&snappercl15_eth_data, 1); |
| 157 | ep93xx_register_i2c(&snappercl15_i2c_gpio_data, snappercl15_i2c_data, |
| 158 | ARRAY_SIZE(snappercl15_i2c_data)); |
| 159 | ep93xx_register_fb(&snappercl15_fb_info); |
Ryan Mallon | 315f7da | 2010-06-08 22:01:12 +1200 | [diff] [blame] | 160 | ep93xx_register_i2s(); |
Ryan Mallon | dd2ac96 | 2010-02-15 01:16:01 +0100 | [diff] [blame] | 161 | platform_device_register(&snappercl15_nand_device); |
| 162 | } |
| 163 | |
| 164 | MACHINE_START(SNAPPER_CL15, "Bluewater Systems Snapper CL15") |
Ryan Mallon | 1c5454e | 2011-06-15 14:45:36 +1000 | [diff] [blame] | 165 | /* Maintainer: Ryan Mallon */ |
Ryan Mallon | dd2ac96 | 2010-02-15 01:16:01 +0100 | [diff] [blame] | 166 | .boot_params = EP93XX_SDCE0_PHYS_BASE + 0x100, |
| 167 | .map_io = ep93xx_map_io, |
| 168 | .init_irq = ep93xx_init_irq, |
| 169 | .timer = &ep93xx_timer, |
| 170 | .init_machine = snappercl15_init_machine, |
| 171 | MACHINE_END |