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Ryan Mallondd2ac962010-02-15 01:16:01 +01001/*
2 * arch/arm/mach-ep93xx/snappercl15.c
3 * Bluewater Systems Snapper CL15 system module
4 *
5 * Copyright (C) 2009 Bluewater Systems Ltd
Ryan Mallon1c5454e2011-06-15 14:45:36 +10006 * Author: Ryan Mallon
Ryan Mallondd2ac962010-02-15 01:16:01 +01007 *
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>
Ryan Mallondd2ac962010-02-15 01:16:01 +010023#include <linux/i2c.h>
24#include <linux/i2c-gpio.h>
25#include <linux/fb.h>
26
27#include <linux/mtd/partitions.h>
28#include <linux/mtd/nand.h>
29
30#include <mach/hardware.h>
Arnd Bergmanna3b29242012-08-24 15:12:11 +020031#include <linux/platform_data/video-ep93xx.h>
Linus Walleijbd5f12a2011-09-22 08:07:00 +010032#include <mach/gpio-ep93xx.h>
Ryan Mallondd2ac962010-02-15 01:16:01 +010033
Jamie Iles9a6879b2011-09-27 20:07:05 +010034#include <asm/hardware/vic.h>
Ryan Mallondd2ac962010-02-15 01:16:01 +010035#include <asm/mach-types.h>
36#include <asm/mach/arch.h>
37
Ryan Mallon258249e2012-01-11 09:06:08 +110038#include "soc.h"
39
Ryan Mallondd2ac962010-02-15 01:16:01 +010040#define SNAPPERCL15_NAND_BASE (EP93XX_CS7_PHYS_BASE + SZ_16M)
41
42#define SNAPPERCL15_NAND_WPN (1 << 8) /* Write protect (active low) */
43#define SNAPPERCL15_NAND_ALE (1 << 9) /* Address latch */
44#define SNAPPERCL15_NAND_CLE (1 << 10) /* Command latch */
45#define SNAPPERCL15_NAND_CEN (1 << 11) /* Chip enable (active low) */
46#define SNAPPERCL15_NAND_RDY (1 << 14) /* Device ready */
47
48#define NAND_CTRL_ADDR(chip) (chip->IO_ADDR_W + 0x40)
49
50static void snappercl15_nand_cmd_ctrl(struct mtd_info *mtd, int cmd,
51 unsigned int ctrl)
52{
53 struct nand_chip *chip = mtd->priv;
54 static u16 nand_state = SNAPPERCL15_NAND_WPN;
55 u16 set;
56
57 if (ctrl & NAND_CTRL_CHANGE) {
58 set = SNAPPERCL15_NAND_CEN | SNAPPERCL15_NAND_WPN;
59
60 if (ctrl & NAND_NCE)
61 set &= ~SNAPPERCL15_NAND_CEN;
62 if (ctrl & NAND_CLE)
63 set |= SNAPPERCL15_NAND_CLE;
64 if (ctrl & NAND_ALE)
65 set |= SNAPPERCL15_NAND_ALE;
66
67 nand_state &= ~(SNAPPERCL15_NAND_CEN |
68 SNAPPERCL15_NAND_CLE |
69 SNAPPERCL15_NAND_ALE);
70 nand_state |= set;
71 __raw_writew(nand_state, NAND_CTRL_ADDR(chip));
72 }
73
74 if (cmd != NAND_CMD_NONE)
75 __raw_writew((cmd & 0xff) | nand_state, chip->IO_ADDR_W);
76}
77
78static int snappercl15_nand_dev_ready(struct mtd_info *mtd)
79{
80 struct nand_chip *chip = mtd->priv;
81
82 return !!(__raw_readw(NAND_CTRL_ADDR(chip)) & SNAPPERCL15_NAND_RDY);
83}
84
Ryan Mallondd2ac962010-02-15 01:16:01 +010085static struct mtd_partition snappercl15_nand_parts[] = {
86 {
87 .name = "Kernel",
88 .offset = 0,
89 .size = SZ_2M,
90 },
91 {
92 .name = "Filesystem",
93 .offset = MTDPART_OFS_APPEND,
94 .size = MTDPART_SIZ_FULL,
95 },
96};
97
98static struct platform_nand_data snappercl15_nand_data = {
99 .chip = {
100 .nr_chips = 1,
Ryan Mallondd2ac962010-02-15 01:16:01 +0100101 .partitions = snappercl15_nand_parts,
102 .nr_partitions = ARRAY_SIZE(snappercl15_nand_parts),
Ryan Mallondd2ac962010-02-15 01:16:01 +0100103 .chip_delay = 25,
104 },
105 .ctrl = {
106 .dev_ready = snappercl15_nand_dev_ready,
107 .cmd_ctrl = snappercl15_nand_cmd_ctrl,
108 },
109};
110
111static struct resource snappercl15_nand_resource[] = {
112 {
113 .start = SNAPPERCL15_NAND_BASE,
114 .end = SNAPPERCL15_NAND_BASE + SZ_4K - 1,
115 .flags = IORESOURCE_MEM,
116 },
117};
118
119static struct platform_device snappercl15_nand_device = {
120 .name = "gen_nand",
121 .id = -1,
122 .dev.platform_data = &snappercl15_nand_data,
123 .resource = snappercl15_nand_resource,
124 .num_resources = ARRAY_SIZE(snappercl15_nand_resource),
125};
126
Hartley Sweetenb370e082010-03-18 18:04:06 +0100127static struct ep93xx_eth_data __initdata snappercl15_eth_data = {
Ryan Mallondd2ac962010-02-15 01:16:01 +0100128 .phy_id = 1,
129};
130
Hartley Sweetenb370e082010-03-18 18:04:06 +0100131static struct i2c_gpio_platform_data __initdata snappercl15_i2c_gpio_data = {
Ryan Mallondd2ac962010-02-15 01:16:01 +0100132 .sda_pin = EP93XX_GPIO_LINE_EEDAT,
133 .sda_is_open_drain = 0,
134 .scl_pin = EP93XX_GPIO_LINE_EECLK,
135 .scl_is_open_drain = 0,
136 .udelay = 0,
137 .timeout = 0,
138};
139
140static struct i2c_board_info __initdata snappercl15_i2c_data[] = {
141 {
142 /* Audio codec */
143 I2C_BOARD_INFO("tlv320aic23", 0x1a),
144 },
145};
146
Hartley Sweetenb370e082010-03-18 18:04:06 +0100147static struct ep93xxfb_mach_info __initdata snappercl15_fb_info = {
Ryan Mallondd2ac962010-02-15 01:16:01 +0100148 .num_modes = EP93XXFB_USE_MODEDB,
149 .bpp = 16,
150};
151
Mika Westerberg989b7902011-09-11 12:28:55 +0300152static struct platform_device snappercl15_audio_device = {
153 .name = "snappercl15-audio",
154 .id = -1,
155};
156
157static void __init snappercl15_register_audio(void)
158{
159 ep93xx_register_i2s();
160 platform_device_register(&snappercl15_audio_device);
161}
162
Ryan Mallondd2ac962010-02-15 01:16:01 +0100163static void __init snappercl15_init_machine(void)
164{
165 ep93xx_init_devices();
166 ep93xx_register_eth(&snappercl15_eth_data, 1);
167 ep93xx_register_i2c(&snappercl15_i2c_gpio_data, snappercl15_i2c_data,
168 ARRAY_SIZE(snappercl15_i2c_data));
169 ep93xx_register_fb(&snappercl15_fb_info);
Mika Westerberg989b7902011-09-11 12:28:55 +0300170 snappercl15_register_audio();
Ryan Mallondd2ac962010-02-15 01:16:01 +0100171 platform_device_register(&snappercl15_nand_device);
172}
173
174MACHINE_START(SNAPPER_CL15, "Bluewater Systems Snapper CL15")
Ryan Mallon1c5454e2011-06-15 14:45:36 +1000175 /* Maintainer: Ryan Mallon */
Nicolas Pitree562cf12011-07-05 22:38:11 -0400176 .atag_offset = 0x100,
Ryan Mallondd2ac962010-02-15 01:16:01 +0100177 .map_io = ep93xx_map_io,
178 .init_irq = ep93xx_init_irq,
Jamie Iles9a6879b2011-09-27 20:07:05 +0100179 .handle_irq = vic_handle_irq,
Ryan Mallondd2ac962010-02-15 01:16:01 +0100180 .timer = &ep93xx_timer,
181 .init_machine = snappercl15_init_machine,
Shawn Guoc9142832012-04-26 10:05:15 +0800182 .init_late = ep93xx_init_late,
Russell King32751662011-11-05 09:54:14 +0000183 .restart = ep93xx_restart,
Ryan Mallondd2ac962010-02-15 01:16:01 +0100184MACHINE_END