Commit | Line | Data |
---|---|---|
dd2ac961 RM |
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> | |
dd2ac961 RM |
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> |
dd2ac961 | 33 | |
9a6879bd | 34 | #include <asm/hardware/vic.h> |
dd2ac961 RM |
35 | #include <asm/mach-types.h> |
36 | #include <asm/mach/arch.h> | |
37 | ||
258249ec RM |
38 | #include "soc.h" |
39 | ||
dd2ac961 RM |
40 | #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 | ||
50 | static 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 | ||
78 | static 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 | ||
dd2ac961 RM |
85 | static 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 | ||
98 | static struct platform_nand_data snappercl15_nand_data = { | |
99 | .chip = { | |
100 | .nr_chips = 1, | |
dd2ac961 RM |
101 | .partitions = snappercl15_nand_parts, |
102 | .nr_partitions = ARRAY_SIZE(snappercl15_nand_parts), | |
dd2ac961 RM |
103 | .chip_delay = 25, |
104 | }, | |
105 | .ctrl = { | |
106 | .dev_ready = snappercl15_nand_dev_ready, | |
107 | .cmd_ctrl = snappercl15_nand_cmd_ctrl, | |
108 | }, | |
109 | }; | |
110 | ||
111 | static 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 | ||
119 | static 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 | ||
b370e082 | 127 | static struct ep93xx_eth_data __initdata snappercl15_eth_data = { |
dd2ac961 RM |
128 | .phy_id = 1, |
129 | }; | |
130 | ||
b370e082 | 131 | static struct i2c_gpio_platform_data __initdata snappercl15_i2c_gpio_data = { |
dd2ac961 RM |
132 | .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 | ||
140 | static struct i2c_board_info __initdata snappercl15_i2c_data[] = { | |
141 | { | |
142 | /* Audio codec */ | |
143 | I2C_BOARD_INFO("tlv320aic23", 0x1a), | |
144 | }, | |
145 | }; | |
146 | ||
b370e082 | 147 | static struct ep93xxfb_mach_info __initdata snappercl15_fb_info = { |
dd2ac961 RM |
148 | .num_modes = EP93XXFB_USE_MODEDB, |
149 | .bpp = 16, | |
150 | }; | |
151 | ||
989b7907 MW |
152 | static struct platform_device snappercl15_audio_device = { |
153 | .name = "snappercl15-audio", | |
154 | .id = -1, | |
155 | }; | |
156 | ||
157 | static void __init snappercl15_register_audio(void) | |
158 | { | |
159 | ep93xx_register_i2s(); | |
160 | platform_device_register(&snappercl15_audio_device); | |
161 | } | |
162 | ||
dd2ac961 RM |
163 | static 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); | |
989b7907 | 170 | snappercl15_register_audio(); |
dd2ac961 RM |
171 | platform_device_register(&snappercl15_nand_device); |
172 | } | |
173 | ||
174 | MACHINE_START(SNAPPER_CL15, "Bluewater Systems Snapper CL15") | |
1c5454ee | 175 | /* Maintainer: Ryan Mallon */ |
e562cf17 | 176 | .atag_offset = 0x100, |
dd2ac961 RM |
177 | .map_io = ep93xx_map_io, |
178 | .init_irq = ep93xx_init_irq, | |
9a6879bd | 179 | .handle_irq = vic_handle_irq, |
dd2ac961 RM |
180 | .timer = &ep93xx_timer, |
181 | .init_machine = snappercl15_init_machine, | |
c914283f | 182 | .init_late = ep93xx_init_late, |
3275166e | 183 | .restart = ep93xx_restart, |
dd2ac961 | 184 | MACHINE_END |