1 /*
2 * linux/arch/arm/mach-clps711x/p720t.c
3 *
4 * Copyright (C) 2000-2001 Deep Blue Solutions Ltd
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20 #include <linux/kernel.h>
21 #include <linux/init.h>
22 #include <linux/types.h>
23 #include <linux/string.h>
24 #include <linux/mm.h>
25 #include <linux/io.h>
26 #include <linux/slab.h>
27 #include <linux/leds.h>
28 #include <linux/sizes.h>
29 #include <linux/backlight.h>
30 #include <linux/platform_device.h>
31 #include <linux/mtd/partitions.h>
32 #include <linux/mtd/nand-gpio.h>
33
34 #include <mach/hardware.h>
35 #include <asm/pgtable.h>
36 #include <asm/page.h>
37 #include <asm/setup.h>
38 #include <asm/mach-types.h>
39 #include <asm/mach/arch.h>
40 #include <asm/mach/map.h>
41 #include <mach/syspld.h>
42
43 #include <video/platform_lcd.h>
44
45 #include "common.h"
46
47 #define P720T_USERLED CLPS711X_GPIO(3, 0)
48 #define P720T_NAND_CLE CLPS711X_GPIO(4, 0)
49 #define P720T_NAND_ALE CLPS711X_GPIO(4, 1)
50 #define P720T_NAND_NCE CLPS711X_GPIO(4, 2)
51
52 #define P720T_NAND_BASE (CLPS711X_SDRAM1_BASE)
53
54 static struct resource p720t_nand_resource[] __initdata = {
55 DEFINE_RES_MEM(P720T_NAND_BASE, SZ_4),
56 };
57
58 static struct mtd_partition p720t_nand_parts[] __initdata = {
59 {
60 .name = "Flash partition 1",
61 .offset = 0,
62 .size = SZ_2M,
63 },
64 {
65 .name = "Flash partition 2",
66 .offset = MTDPART_OFS_APPEND,
67 .size = MTDPART_SIZ_FULL,
68 },
69 };
70
71 static struct gpio_nand_platdata p720t_nand_pdata __initdata = {
72 .gpio_rdy = -1,
73 .gpio_nce = P720T_NAND_NCE,
74 .gpio_ale = P720T_NAND_ALE,
75 .gpio_cle = P720T_NAND_CLE,
76 .gpio_nwp = -1,
77 .chip_delay = 15,
78 .parts = p720t_nand_parts,
79 .num_parts = ARRAY_SIZE(p720t_nand_parts),
80 };
81
82 static struct platform_device p720t_nand_pdev __initdata = {
83 .name = "gpio-nand",
84 .id = -1,
85 .resource = p720t_nand_resource,
86 .num_resources = ARRAY_SIZE(p720t_nand_resource),
87 .dev = {
88 .platform_data = &p720t_nand_pdata,
89 },
90 };
91
p720t_lcd_power_set(struct plat_lcd_data * pd,unsigned int power)92 static void p720t_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
93 {
94 if (power) {
95 PLD_LCDEN = PLD_LCDEN_EN;
96 PLD_PWR |= PLD_S4_ON | PLD_S2_ON | PLD_S1_ON;
97 } else {
98 PLD_PWR &= ~(PLD_S4_ON | PLD_S2_ON | PLD_S1_ON);
99 PLD_LCDEN = 0;
100 }
101 }
102
103 static struct plat_lcd_data p720t_lcd_power_pdata = {
104 .set_power = p720t_lcd_power_set,
105 };
106
p720t_lcd_backlight_set_intensity(int intensity)107 static void p720t_lcd_backlight_set_intensity(int intensity)
108 {
109 if (intensity)
110 PLD_PWR |= PLD_S3_ON;
111 else
112 PLD_PWR = 0;
113 }
114
115 static struct generic_bl_info p720t_lcd_backlight_pdata = {
116 .name = "lcd-backlight.0",
117 .default_intensity = 0x01,
118 .max_intensity = 0x01,
119 .set_bl_intensity = p720t_lcd_backlight_set_intensity,
120 };
121
122 /*
123 * Map the P720T system PLD. It occupies two address spaces:
124 * 0x10000000 and 0x10400000. We map both regions as one.
125 */
126 static struct map_desc p720t_io_desc[] __initdata = {
127 {
128 .virtual = SYSPLD_VIRT_BASE,
129 .pfn = __phys_to_pfn(SYSPLD_PHYS_BASE),
130 .length = SZ_8M,
131 .type = MT_DEVICE,
132 },
133 };
134
135 static void __init
fixup_p720t(struct tag * tag,char ** cmdline,struct meminfo * mi)136 fixup_p720t(struct tag *tag, char **cmdline, struct meminfo *mi)
137 {
138 /*
139 * Our bootloader doesn't setup any tags (yet).
140 */
141 if (tag->hdr.tag != ATAG_CORE) {
142 tag->hdr.tag = ATAG_CORE;
143 tag->hdr.size = tag_size(tag_core);
144 tag->u.core.flags = 0;
145 tag->u.core.pagesize = PAGE_SIZE;
146 tag->u.core.rootdev = 0x0100;
147
148 tag = tag_next(tag);
149 tag->hdr.tag = ATAG_MEM;
150 tag->hdr.size = tag_size(tag_mem32);
151 tag->u.mem.size = 4096;
152 tag->u.mem.start = PHYS_OFFSET;
153
154 tag = tag_next(tag);
155 tag->hdr.tag = ATAG_NONE;
156 tag->hdr.size = 0;
157 }
158 }
159
p720t_map_io(void)160 static void __init p720t_map_io(void)
161 {
162 clps711x_map_io();
163 iotable_init(p720t_io_desc, ARRAY_SIZE(p720t_io_desc));
164 }
165
p720t_init_early(void)166 static void __init p720t_init_early(void)
167 {
168 /*
169 * Power down as much as possible in case we don't
170 * have the drivers loaded.
171 */
172 PLD_LCDEN = 0;
173 PLD_PWR &= ~(PLD_S4_ON|PLD_S3_ON|PLD_S2_ON|PLD_S1_ON);
174
175 PLD_KBD = 0;
176 PLD_IO = 0;
177 PLD_IRDA = 0;
178 PLD_CODEC = 0;
179 PLD_TCH = 0;
180 PLD_SPI = 0;
181 if (!IS_ENABLED(CONFIG_DEBUG_LL)) {
182 PLD_COM2 = 0;
183 PLD_COM1 = 0;
184 }
185 }
186
187 static struct gpio_led p720t_gpio_leds[] = {
188 {
189 .name = "User LED",
190 .default_trigger = "heartbeat",
191 .gpio = P720T_USERLED,
192 },
193 };
194
195 static struct gpio_led_platform_data p720t_gpio_led_pdata __initdata = {
196 .leds = p720t_gpio_leds,
197 .num_leds = ARRAY_SIZE(p720t_gpio_leds),
198 };
199
p720t_init(void)200 static void __init p720t_init(void)
201 {
202 platform_device_register(&p720t_nand_pdev);
203 platform_device_register_data(&platform_bus, "platform-lcd", 0,
204 &p720t_lcd_power_pdata,
205 sizeof(p720t_lcd_power_pdata));
206 platform_device_register_data(&platform_bus, "generic-bl", 0,
207 &p720t_lcd_backlight_pdata,
208 sizeof(p720t_lcd_backlight_pdata));
209 platform_device_register_simple("video-clps711x", 0, NULL, 0);
210 }
211
p720t_init_late(void)212 static void __init p720t_init_late(void)
213 {
214 platform_device_register_data(&platform_bus, "leds-gpio", 0,
215 &p720t_gpio_led_pdata,
216 sizeof(p720t_gpio_led_pdata));
217 }
218
219 MACHINE_START(P720T, "ARM-Prospector720T")
220 /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
221 .atag_offset = 0x100,
222 .nr_irqs = CLPS711X_NR_IRQS,
223 .fixup = fixup_p720t,
224 .map_io = p720t_map_io,
225 .init_early = p720t_init_early,
226 .init_irq = clps711x_init_irq,
227 .init_time = clps711x_timer_init,
228 .init_machine = p720t_init,
229 .init_late = p720t_init_late,
230 .handle_irq = clps711x_handle_irq,
231 .restart = clps711x_restart,
232 MACHINE_END
233