e311032e7eebb3abbbd7540843b96de3ec314302
[muen/linux.git] / arch / arm / mach-omap1 / board-palmz71.c
1 /*
2  * linux/arch/arm/mach-omap1/board-palmz71.c
3  *
4  * Modified from board-generic.c
5  *
6  * Support for the Palm Zire71 PDA.
7  *
8  * Original version : Laurent Gonzalez
9  *
10  * Modified for zire71 : Marek Vasut
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 version 2 as
14  * published by the Free Software Foundation.
15  */
16
17 #include <linux/delay.h>
18 #include <linux/gpio.h>
19 #include <linux/kernel.h>
20 #include <linux/init.h>
21 #include <linux/platform_device.h>
22 #include <linux/notifier.h>
23 #include <linux/clk.h>
24 #include <linux/irq.h>
25 #include <linux/input.h>
26 #include <linux/interrupt.h>
27 #include <linux/mtd/mtd.h>
28 #include <linux/mtd/partitions.h>
29 #include <linux/mtd/physmap.h>
30 #include <linux/omapfb.h>
31 #include <linux/spi/spi.h>
32 #include <linux/spi/ads7846.h>
33 #include <linux/platform_data/omap1_bl.h>
34
35 #include <asm/mach-types.h>
36 #include <asm/mach/arch.h>
37 #include <asm/mach/map.h>
38
39 #include <mach/flash.h>
40 #include <mach/mux.h>
41 #include <plat/dma.h>
42 #include <plat/tc.h>
43 #include <mach/irda.h>
44 #include <linux/platform_data/keypad-omap.h>
45
46 #include <mach/hardware.h>
47 #include <mach/usb.h>
48
49 #include "common.h"
50
51 #define PALMZ71_USBDETECT_GPIO  0
52 #define PALMZ71_PENIRQ_GPIO     6
53 #define PALMZ71_MMC_WP_GPIO     8
54 #define PALMZ71_HDQ_GPIO        11
55
56 #define PALMZ71_HOTSYNC_GPIO    OMAP_MPUIO(1)
57 #define PALMZ71_CABLE_GPIO      OMAP_MPUIO(2)
58 #define PALMZ71_SLIDER_GPIO     OMAP_MPUIO(3)
59 #define PALMZ71_MMC_IN_GPIO     OMAP_MPUIO(4)
60
61 static const unsigned int palmz71_keymap[] = {
62         KEY(0, 0, KEY_F1),
63         KEY(1, 0, KEY_F2),
64         KEY(2, 0, KEY_F3),
65         KEY(3, 0, KEY_F4),
66         KEY(4, 0, KEY_POWER),
67         KEY(0, 1, KEY_LEFT),
68         KEY(1, 1, KEY_DOWN),
69         KEY(2, 1, KEY_UP),
70         KEY(3, 1, KEY_RIGHT),
71         KEY(4, 1, KEY_ENTER),
72         KEY(0, 2, KEY_CAMERA),
73 };
74
75 static const struct matrix_keymap_data palmz71_keymap_data = {
76         .keymap         = palmz71_keymap,
77         .keymap_size    = ARRAY_SIZE(palmz71_keymap),
78 };
79
80 static struct omap_kp_platform_data palmz71_kp_data = {
81         .rows   = 8,
82         .cols   = 8,
83         .keymap_data    = &palmz71_keymap_data,
84         .rep    = true,
85         .delay  = 80,
86 };
87
88 static struct resource palmz71_kp_resources[] = {
89         [0] = {
90                 .start  = INT_KEYBOARD,
91                 .end    = INT_KEYBOARD,
92                 .flags  = IORESOURCE_IRQ,
93         },
94 };
95
96 static struct platform_device palmz71_kp_device = {
97         .name   = "omap-keypad",
98         .id     = -1,
99         .dev    = {
100                 .platform_data = &palmz71_kp_data,
101         },
102         .num_resources  = ARRAY_SIZE(palmz71_kp_resources),
103         .resource       = palmz71_kp_resources,
104 };
105
106 static struct mtd_partition palmz71_rom_partitions[] = {
107         /* PalmOS "Small ROM", contains the bootloader and the debugger */
108         {
109                 .name           = "smallrom",
110                 .offset         = 0,
111                 .size           = 0xa000,
112                 .mask_flags     = MTD_WRITEABLE,
113         },
114         /* PalmOS "Big ROM", a filesystem with all the OS code and data */
115         {
116                 .name   = "bigrom",
117                 .offset = SZ_128K,
118                 /*
119                  * 0x5f0000 bytes big in the multi-language ("EFIGS") version,
120                  * 0x7b0000 bytes in the English-only ("enUS") version.
121                  */
122                 .size           = 0x7b0000,
123                 .mask_flags     = MTD_WRITEABLE,
124         },
125 };
126
127 static struct physmap_flash_data palmz71_rom_data = {
128         .width          = 2,
129         .set_vpp        = omap1_set_vpp,
130         .parts          = palmz71_rom_partitions,
131         .nr_parts       = ARRAY_SIZE(palmz71_rom_partitions),
132 };
133
134 static struct resource palmz71_rom_resource = {
135         .start  = OMAP_CS0_PHYS,
136         .end    = OMAP_CS0_PHYS + SZ_8M - 1,
137         .flags  = IORESOURCE_MEM,
138 };
139
140 static struct platform_device palmz71_rom_device = {
141         .name   = "physmap-flash",
142         .id     = -1,
143         .dev = {
144                 .platform_data = &palmz71_rom_data,
145         },
146         .num_resources  = 1,
147         .resource       = &palmz71_rom_resource,
148 };
149
150 static struct platform_device palmz71_lcd_device = {
151         .name   = "lcd_palmz71",
152         .id     = -1,
153 };
154
155 static struct omap_irda_config palmz71_irda_config = {
156         .transceiver_cap        = IR_SIRMODE,
157         .rx_channel             = OMAP_DMA_UART3_RX,
158         .tx_channel             = OMAP_DMA_UART3_TX,
159         .dest_start             = UART3_THR,
160         .src_start              = UART3_RHR,
161         .tx_trigger             = 0,
162         .rx_trigger             = 0,
163 };
164
165 static struct resource palmz71_irda_resources[] = {
166         [0] = {
167                 .start  = INT_UART3,
168                 .end    = INT_UART3,
169                 .flags  = IORESOURCE_IRQ,
170         },
171 };
172
173 static struct platform_device palmz71_irda_device = {
174         .name   = "omapirda",
175         .id     = -1,
176         .dev = {
177                 .platform_data = &palmz71_irda_config,
178         },
179         .num_resources  = ARRAY_SIZE(palmz71_irda_resources),
180         .resource       = palmz71_irda_resources,
181 };
182
183 static struct platform_device palmz71_spi_device = {
184         .name   = "spi_palmz71",
185         .id     = -1,
186 };
187
188 static struct omap_backlight_config palmz71_backlight_config = {
189         .default_intensity      = 0xa0,
190 };
191
192 static struct platform_device palmz71_backlight_device = {
193         .name   = "omap-bl",
194         .id     = -1,
195         .dev    = {
196                 .platform_data = &palmz71_backlight_config,
197         },
198 };
199
200 static struct platform_device *devices[] __initdata = {
201         &palmz71_rom_device,
202         &palmz71_kp_device,
203         &palmz71_lcd_device,
204         &palmz71_irda_device,
205         &palmz71_spi_device,
206         &palmz71_backlight_device,
207 };
208
209 static int
210 palmz71_get_pendown_state(void)
211 {
212         return !gpio_get_value(PALMZ71_PENIRQ_GPIO);
213 }
214
215 static const struct ads7846_platform_data palmz71_ts_info = {
216         .model                  = 7846,
217         .vref_delay_usecs       = 100,  /* internal, no capacitor */
218         .x_plate_ohms           = 419,
219         .y_plate_ohms           = 486,
220         .get_pendown_state      = palmz71_get_pendown_state,
221 };
222
223 static struct spi_board_info __initdata palmz71_boardinfo[] = { {
224         /* MicroWire (bus 2) CS0 has an ads7846e */
225         .modalias       = "ads7846",
226         .platform_data  = &palmz71_ts_info,
227         .max_speed_hz   = 120000        /* max sample rate at 3V */
228                                 * 26    /* command + data + overhead */,
229         .bus_num        = 2,
230         .chip_select    = 0,
231 } };
232
233 static struct omap_usb_config palmz71_usb_config __initdata = {
234         .register_dev   = 1,    /* Mini-B only receptacle */
235         .hmc_mode       = 0,
236         .pins[0]        = 2,
237 };
238
239 static struct omap_lcd_config palmz71_lcd_config __initdata = {
240         .ctrl_name = "internal",
241 };
242
243 static irqreturn_t
244 palmz71_powercable(int irq, void *dev_id)
245 {
246         if (gpio_get_value(PALMZ71_USBDETECT_GPIO)) {
247                 printk(KERN_INFO "PM: Power cable connected\n");
248                 irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
249                                  IRQ_TYPE_EDGE_FALLING);
250         } else {
251                 printk(KERN_INFO "PM: Power cable disconnected\n");
252                 irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
253                                  IRQ_TYPE_EDGE_RISING);
254         }
255         return IRQ_HANDLED;
256 }
257
258 static void __init
259 omap_mpu_wdt_mode(int mode)
260 {
261         if (mode)
262                 omap_writew(0x8000, OMAP_WDT_TIMER_MODE);
263         else {
264                 omap_writew(0x00f5, OMAP_WDT_TIMER_MODE);
265                 omap_writew(0x00a0, OMAP_WDT_TIMER_MODE);
266         }
267 }
268
269 static void __init
270 palmz71_gpio_setup(int early)
271 {
272         if (early) {
273                 /* Only set GPIO1 so we have a working serial */
274                 gpio_direction_output(1, 1);
275         } else {
276                 /* Set MMC/SD host WP pin as input */
277                 if (gpio_request(PALMZ71_MMC_WP_GPIO, "MMC WP") < 0) {
278                         printk(KERN_ERR "Could not reserve WP GPIO!\n");
279                         return;
280                 }
281                 gpio_direction_input(PALMZ71_MMC_WP_GPIO);
282
283                 /* Monitor the Power-cable-connected signal */
284                 if (gpio_request(PALMZ71_USBDETECT_GPIO, "USB detect") < 0) {
285                         printk(KERN_ERR
286                                 "Could not reserve cable signal GPIO!\n");
287                         return;
288                 }
289                 gpio_direction_input(PALMZ71_USBDETECT_GPIO);
290                 if (request_irq(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
291                                 palmz71_powercable, 0, "palmz71-cable", NULL))
292                         printk(KERN_ERR
293                                         "IRQ request for power cable failed!\n");
294                 palmz71_powercable(gpio_to_irq(PALMZ71_USBDETECT_GPIO), NULL);
295         }
296 }
297
298 static void __init
299 omap_palmz71_init(void)
300 {
301         /* mux pins for uarts */
302         omap_cfg_reg(UART1_TX);
303         omap_cfg_reg(UART1_RTS);
304         omap_cfg_reg(UART2_TX);
305         omap_cfg_reg(UART2_RTS);
306         omap_cfg_reg(UART3_TX);
307         omap_cfg_reg(UART3_RX);
308
309         palmz71_gpio_setup(1);
310         omap_mpu_wdt_mode(0);
311
312         platform_add_devices(devices, ARRAY_SIZE(devices));
313
314         palmz71_boardinfo[0].irq = gpio_to_irq(PALMZ71_PENIRQ_GPIO);
315         spi_register_board_info(palmz71_boardinfo,
316                                 ARRAY_SIZE(palmz71_boardinfo));
317         omap1_usb_init(&palmz71_usb_config);
318         omap_serial_init();
319         omap_register_i2c_bus(1, 100, NULL, 0);
320         palmz71_gpio_setup(0);
321
322         omapfb_set_lcd_config(&palmz71_lcd_config);
323 }
324
325 MACHINE_START(OMAP_PALMZ71, "OMAP310 based Palm Zire71")
326         .atag_offset    = 0x100,
327         .map_io         = omap15xx_map_io,
328         .init_early     = omap1_init_early,
329         .reserve        = omap_reserve,
330         .init_irq       = omap1_init_irq,
331         .init_machine   = omap_palmz71_init,
332         .init_late      = omap1_init_late,
333         .timer          = &omap1_timer,
334         .restart        = omap1_restart,
335 MACHINE_END