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1 | /* |
2 | * arch/arm/mach-ep93xx/snappercl15.c | |
3 | * Bluewater Systems Snapper CL15 system module | |
4 | * | |
5 | * Copyright (C) 2009 Bluewater Systems Ltd | |
1c5454ee | 6 | * Author: Ryan Mallon |
dd2ac961 RM |
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> | |
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23 | #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> | |
a3b29245 | 31 | #include <linux/platform_data/video-ep93xx.h> |
bd5f12a2 | 32 | #include <mach/gpio-ep93xx.h> |
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33 | |
34 | #include <asm/mach-types.h> | |
35 | #include <asm/mach/arch.h> | |
36 | ||
258249ec RM |
37 | #include "soc.h" |
38 | ||
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39 | #define SNAPPERCL15_NAND_BASE (EP93XX_CS7_PHYS_BASE + SZ_16M) |
40 | ||
41 | #define SNAPPERCL15_NAND_WPN (1 << 8) /* Write protect (active low) */ | |
42 | #define SNAPPERCL15_NAND_ALE (1 << 9) /* Address latch */ | |
43 | #define SNAPPERCL15_NAND_CLE (1 << 10) /* Command latch */ | |
44 | #define SNAPPERCL15_NAND_CEN (1 << 11) /* Chip enable (active low) */ | |
45 | #define SNAPPERCL15_NAND_RDY (1 << 14) /* Device ready */ | |
46 | ||
47 | #define NAND_CTRL_ADDR(chip) (chip->IO_ADDR_W + 0x40) | |
48 | ||
49 | static void snappercl15_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, | |
50 | unsigned int ctrl) | |
51 | { | |
52 | struct nand_chip *chip = mtd->priv; | |
53 | static u16 nand_state = SNAPPERCL15_NAND_WPN; | |
54 | u16 set; | |
55 | ||
56 | if (ctrl & NAND_CTRL_CHANGE) { | |
57 | set = SNAPPERCL15_NAND_CEN | SNAPPERCL15_NAND_WPN; | |
58 | ||
59 | if (ctrl & NAND_NCE) | |
60 | set &= ~SNAPPERCL15_NAND_CEN; | |
61 | if (ctrl & NAND_CLE) | |
62 | set |= SNAPPERCL15_NAND_CLE; | |
63 | if (ctrl & NAND_ALE) | |
64 | set |= SNAPPERCL15_NAND_ALE; | |
65 | ||
66 | nand_state &= ~(SNAPPERCL15_NAND_CEN | | |
67 | SNAPPERCL15_NAND_CLE | | |
68 | SNAPPERCL15_NAND_ALE); | |
69 | nand_state |= set; | |
70 | __raw_writew(nand_state, NAND_CTRL_ADDR(chip)); | |
71 | } | |
72 | ||
73 | if (cmd != NAND_CMD_NONE) | |
74 | __raw_writew((cmd & 0xff) | nand_state, chip->IO_ADDR_W); | |
75 | } | |
76 | ||
77 | static int snappercl15_nand_dev_ready(struct mtd_info *mtd) | |
78 | { | |
79 | struct nand_chip *chip = mtd->priv; | |
80 | ||
81 | return !!(__raw_readw(NAND_CTRL_ADDR(chip)) & SNAPPERCL15_NAND_RDY); | |
82 | } | |
83 | ||
dd2ac961 RM |
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, | |
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100 | .partitions = snappercl15_nand_parts, |
101 | .nr_partitions = ARRAY_SIZE(snappercl15_nand_parts), | |
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102 | .chip_delay = 25, |
103 | }, | |
104 | .ctrl = { | |
105 | .dev_ready = snappercl15_nand_dev_ready, | |
106 | .cmd_ctrl = snappercl15_nand_cmd_ctrl, | |
107 | }, | |
108 | }; | |
109 | ||
110 | static struct resource snappercl15_nand_resource[] = { | |
111 | { | |
112 | .start = SNAPPERCL15_NAND_BASE, | |
113 | .end = SNAPPERCL15_NAND_BASE + SZ_4K - 1, | |
114 | .flags = IORESOURCE_MEM, | |
115 | }, | |
116 | }; | |
117 | ||
118 | static struct platform_device snappercl15_nand_device = { | |
119 | .name = "gen_nand", | |
120 | .id = -1, | |
121 | .dev.platform_data = &snappercl15_nand_data, | |
122 | .resource = snappercl15_nand_resource, | |
123 | .num_resources = ARRAY_SIZE(snappercl15_nand_resource), | |
124 | }; | |
125 | ||
b370e082 | 126 | static struct ep93xx_eth_data __initdata snappercl15_eth_data = { |
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127 | .phy_id = 1, |
128 | }; | |
129 | ||
b370e082 | 130 | static struct i2c_gpio_platform_data __initdata snappercl15_i2c_gpio_data = { |
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131 | .sda_pin = EP93XX_GPIO_LINE_EEDAT, |
132 | .sda_is_open_drain = 0, | |
133 | .scl_pin = EP93XX_GPIO_LINE_EECLK, | |
134 | .scl_is_open_drain = 0, | |
135 | .udelay = 0, | |
136 | .timeout = 0, | |
137 | }; | |
138 | ||
139 | static struct i2c_board_info __initdata snappercl15_i2c_data[] = { | |
140 | { | |
141 | /* Audio codec */ | |
142 | I2C_BOARD_INFO("tlv320aic23", 0x1a), | |
143 | }, | |
144 | }; | |
145 | ||
b370e082 | 146 | static struct ep93xxfb_mach_info __initdata snappercl15_fb_info = { |
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147 | .num_modes = EP93XXFB_USE_MODEDB, |
148 | .bpp = 16, | |
149 | }; | |
150 | ||
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151 | static struct platform_device snappercl15_audio_device = { |
152 | .name = "snappercl15-audio", | |
153 | .id = -1, | |
154 | }; | |
155 | ||
156 | static void __init snappercl15_register_audio(void) | |
157 | { | |
158 | ep93xx_register_i2s(); | |
159 | platform_device_register(&snappercl15_audio_device); | |
160 | } | |
161 | ||
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162 | static void __init snappercl15_init_machine(void) |
163 | { | |
164 | ep93xx_init_devices(); | |
165 | ep93xx_register_eth(&snappercl15_eth_data, 1); | |
166 | ep93xx_register_i2c(&snappercl15_i2c_gpio_data, snappercl15_i2c_data, | |
167 | ARRAY_SIZE(snappercl15_i2c_data)); | |
168 | ep93xx_register_fb(&snappercl15_fb_info); | |
989b7907 | 169 | snappercl15_register_audio(); |
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170 | platform_device_register(&snappercl15_nand_device); |
171 | } | |
172 | ||
173 | MACHINE_START(SNAPPER_CL15, "Bluewater Systems Snapper CL15") | |
1c5454ee | 174 | /* Maintainer: Ryan Mallon */ |
e562cf17 | 175 | .atag_offset = 0x100, |
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176 | .map_io = ep93xx_map_io, |
177 | .init_irq = ep93xx_init_irq, | |
6bb27d73 | 178 | .init_time = ep93xx_timer_init, |
dd2ac961 | 179 | .init_machine = snappercl15_init_machine, |
c914283f | 180 | .init_late = ep93xx_init_late, |
3275166e | 181 | .restart = ep93xx_restart, |
dd2ac961 | 182 | MACHINE_END |