/arch/arm/mach-omap1/board-htcherald.c
C | 310 lines | 217 code | 44 blank | 49 comment | 13 complexity | 05a4ced6dacf0857ce0f29d1ba30d40d MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
1/*
2 * HTC Herald board configuration
3 * Copyright (C) 2009 Cory Maccarrone <darkstar6262@gmail.com>
4 * Copyright (C) 2009 Wing Linux
5 *
6 * Based on the board-htcwizard.c file from the linwizard project:
7 * Copyright (C) 2006 Unai Uribarri
8 * Copyright (C) 2008 linwizard.sourceforge.net
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of the
13 * License, or (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 * 02110-1301, USA.
24 *
25 */
26
27#include <linux/kernel.h>
28#include <linux/init.h>
29#include <linux/platform_device.h>
30#include <linux/input.h>
31#include <linux/io.h>
32#include <linux/gpio.h>
33
34#include <asm/mach-types.h>
35#include <asm/mach/arch.h>
36
37#include <plat/omap7xx.h>
38#include <plat/common.h>
39#include <plat/board.h>
40#include <plat/keypad.h>
41#include <plat/usb.h>
42
43#include <mach/irqs.h>
44
45#include <linux/delay.h>
46
47/* LCD register definition */
48#define OMAP_LCDC_CONTROL (0xfffec000 + 0x00)
49#define OMAP_LCDC_STATUS (0xfffec000 + 0x10)
50#define OMAP_DMA_LCD_CCR (0xfffee300 + 0xc2)
51#define OMAP_DMA_LCD_CTRL (0xfffee300 + 0xc4)
52#define OMAP_LCDC_CTRL_LCD_EN (1 << 0)
53#define OMAP_LCDC_STAT_DONE (1 << 0)
54
55static struct omap_lcd_config htcherald_lcd_config __initdata = {
56 .ctrl_name = "internal",
57};
58
59static struct omap_board_config_kernel htcherald_config[] __initdata = {
60 { OMAP_TAG_LCD, &htcherald_lcd_config },
61};
62
63/* Keyboard definition */
64
65static int htc_herald_keymap[] = {
66 KEY(0, 0, KEY_RECORD), /* Mail button */
67 KEY(0, 1, KEY_CAMERA), /* Camera */
68 KEY(0, 2, KEY_PHONE), /* Send key */
69 KEY(0, 3, KEY_VOLUMEUP), /* Volume up */
70 KEY(0, 4, KEY_F2), /* Right bar (landscape) */
71 KEY(0, 5, KEY_MAIL), /* Win key (portrait) */
72 KEY(0, 6, KEY_DIRECTORY), /* Right bar (protrait) */
73 KEY(1, 0, KEY_LEFTCTRL), /* Windows key */
74 KEY(1, 1, KEY_COMMA),
75 KEY(1, 2, KEY_M),
76 KEY(1, 3, KEY_K),
77 KEY(1, 4, KEY_SLASH), /* OK key */
78 KEY(1, 5, KEY_I),
79 KEY(1, 6, KEY_U),
80 KEY(2, 0, KEY_LEFTALT),
81 KEY(2, 1, KEY_TAB),
82 KEY(2, 2, KEY_N),
83 KEY(2, 3, KEY_J),
84 KEY(2, 4, KEY_ENTER),
85 KEY(2, 5, KEY_H),
86 KEY(2, 6, KEY_Y),
87 KEY(3, 0, KEY_SPACE),
88 KEY(3, 1, KEY_L),
89 KEY(3, 2, KEY_B),
90 KEY(3, 3, KEY_V),
91 KEY(3, 4, KEY_BACKSPACE),
92 KEY(3, 5, KEY_G),
93 KEY(3, 6, KEY_T),
94 KEY(4, 0, KEY_CAPSLOCK), /* Shift */
95 KEY(4, 1, KEY_C),
96 KEY(4, 2, KEY_F),
97 KEY(4, 3, KEY_R),
98 KEY(4, 4, KEY_O),
99 KEY(4, 5, KEY_E),
100 KEY(4, 6, KEY_D),
101 KEY(5, 0, KEY_X),
102 KEY(5, 1, KEY_Z),
103 KEY(5, 2, KEY_S),
104 KEY(5, 3, KEY_W),
105 KEY(5, 4, KEY_P),
106 KEY(5, 5, KEY_Q),
107 KEY(5, 6, KEY_A),
108 KEY(6, 0, KEY_CONNECT), /* Voice button */
109 KEY(6, 2, KEY_CANCEL), /* End key */
110 KEY(6, 3, KEY_VOLUMEDOWN), /* Volume down */
111 KEY(6, 4, KEY_F1), /* Left bar (landscape) */
112 KEY(6, 5, KEY_WWW), /* OK button (portrait) */
113 KEY(6, 6, KEY_CALENDAR), /* Left bar (portrait) */
114 0
115};
116
117struct omap_kp_platform_data htcherald_kp_data = {
118 .rows = 7,
119 .cols = 7,
120 .delay = 20,
121 .rep = 1,
122 .keymap = htc_herald_keymap,
123};
124
125static struct resource kp_resources[] = {
126 [0] = {
127 .start = INT_7XX_MPUIO_KEYPAD,
128 .end = INT_7XX_MPUIO_KEYPAD,
129 .flags = IORESOURCE_IRQ,
130 },
131};
132
133static struct platform_device kp_device = {
134 .name = "omap-keypad",
135 .id = -1,
136 .dev = {
137 .platform_data = &htcherald_kp_data,
138 },
139 .num_resources = ARRAY_SIZE(kp_resources),
140 .resource = kp_resources,
141};
142
143/* USB Device */
144static struct omap_usb_config htcherald_usb_config __initdata = {
145 .otg = 0,
146 .register_host = 0,
147 .register_dev = 1,
148 .hmc_mode = 4,
149 .pins[0] = 2,
150};
151
152/* LCD Device resources */
153static struct platform_device lcd_device = {
154 .name = "lcd_htcherald",
155 .id = -1,
156};
157
158static struct platform_device *devices[] __initdata = {
159 &kp_device,
160 &lcd_device,
161};
162
163/*
164 * Init functions from here on
165 */
166
167static void __init htcherald_lcd_init(void)
168{
169 u32 reg;
170 unsigned int tries = 200;
171
172 /* disable controller if active */
173 reg = omap_readl(OMAP_LCDC_CONTROL);
174 if (reg & OMAP_LCDC_CTRL_LCD_EN) {
175 reg &= ~OMAP_LCDC_CTRL_LCD_EN;
176 omap_writel(reg, OMAP_LCDC_CONTROL);
177
178 /* wait for end of frame */
179 while (!(omap_readl(OMAP_LCDC_STATUS) & OMAP_LCDC_STAT_DONE)) {
180 tries--;
181 if (!tries)
182 break;
183 }
184 if (!tries)
185 printk(KERN_WARNING "Timeout waiting for end of frame "
186 "-- LCD may not be available\n");
187
188 /* turn off DMA */
189 reg = omap_readw(OMAP_DMA_LCD_CCR);
190 reg &= ~(1 << 7);
191 omap_writew(reg, OMAP_DMA_LCD_CCR);
192
193 reg = omap_readw(OMAP_DMA_LCD_CTRL);
194 reg &= ~(1 << 8);
195 omap_writew(reg, OMAP_DMA_LCD_CTRL);
196 }
197}
198
199static void __init htcherald_map_io(void)
200{
201 omap1_map_common_io();
202
203 /*
204 * The LCD panel must be disabled and DMA turned off here, as doing
205 * it later causes the LCD never to reinitialize.
206 */
207 htcherald_lcd_init();
208
209 printk(KERN_INFO "htcherald_map_io done.\n");
210}
211
212static void __init htcherald_disable_watchdog(void)
213{
214 /* Disable watchdog if running */
215 if (omap_readl(OMAP_WDT_TIMER_MODE) & 0x8000) {
216 /*
217 * disable a potentially running watchdog timer before
218 * it kills us.
219 */
220 printk(KERN_WARNING "OMAP850 Watchdog seems to be activated, disabling it for now.\n");
221 omap_writel(0xF5, OMAP_WDT_TIMER_MODE);
222 omap_writel(0xA0, OMAP_WDT_TIMER_MODE);
223 }
224}
225
226#define HTCHERALD_GPIO_USB_EN1 33
227#define HTCHERALD_GPIO_USB_EN2 73
228#define HTCHERALD_GPIO_USB_DM 35
229#define HTCHERALD_GPIO_USB_DP 36
230
231static void __init htcherald_usb_enable(void)
232{
233 unsigned int tries = 20;
234 unsigned int value = 0;
235
236 /* Request the GPIOs we need to control here */
237 if (gpio_request(HTCHERALD_GPIO_USB_EN1, "herald_usb") < 0)
238 goto err1;
239
240 if (gpio_request(HTCHERALD_GPIO_USB_EN2, "herald_usb") < 0)
241 goto err2;
242
243 if (gpio_request(HTCHERALD_GPIO_USB_DM, "herald_usb") < 0)
244 goto err3;
245
246 if (gpio_request(HTCHERALD_GPIO_USB_DP, "herald_usb") < 0)
247 goto err4;
248
249 /* force USB_EN GPIO to 0 */
250 do {
251 /* output low */
252 gpio_direction_output(HTCHERALD_GPIO_USB_EN1, 0);
253 } while ((value = gpio_get_value(HTCHERALD_GPIO_USB_EN1)) == 1 &&
254 --tries);
255
256 if (value == 1)
257 printk(KERN_WARNING "Unable to reset USB, trying to continue\n");
258
259 gpio_direction_output(HTCHERALD_GPIO_USB_EN2, 0); /* output low */
260 gpio_direction_input(HTCHERALD_GPIO_USB_DM); /* input */
261 gpio_direction_input(HTCHERALD_GPIO_USB_DP); /* input */
262
263 goto done;
264
265err4:
266 gpio_free(HTCHERALD_GPIO_USB_DM);
267err3:
268 gpio_free(HTCHERALD_GPIO_USB_EN2);
269err2:
270 gpio_free(HTCHERALD_GPIO_USB_EN1);
271err1:
272 printk(KERN_ERR "Unabled to request GPIO for USB\n");
273done:
274 printk(KERN_INFO "USB setup complete.\n");
275}
276
277static void __init htcherald_init(void)
278{
279 printk(KERN_INFO "HTC Herald init.\n");
280
281 omap_gpio_init();
282
283 omap_board_config = htcherald_config;
284 omap_board_config_size = ARRAY_SIZE(htcherald_config);
285 platform_add_devices(devices, ARRAY_SIZE(devices));
286
287 htcherald_disable_watchdog();
288
289 htcherald_usb_enable();
290 omap_usb_init(&htcherald_usb_config);
291}
292
293static void __init htcherald_init_irq(void)
294{
295 printk(KERN_INFO "htcherald_init_irq.\n");
296 omap1_init_common_hw();
297 omap_init_irq();
298}
299
300MACHINE_START(HERALD, "HTC Herald")
301 /* Maintainer: Cory Maccarrone <darkstar6262@gmail.com> */
302 /* Maintainer: wing-linux.sourceforge.net */
303 .phys_io = 0xfff00000,
304 .io_pg_offst = ((0xfef00000) >> 18) & 0xfffc,
305 .boot_params = 0x10000100,
306 .map_io = htcherald_map_io,
307 .init_irq = htcherald_init_irq,
308 .init_machine = htcherald_init,
309 .timer = &omap_timer,
310MACHINE_END