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
31 #include <mach/hardware.h>
32 #include <asm/mach-types.h>
33 #include <asm/mach/arch.h>
34 #include <asm/mach/map.h>
35
36 #include <plat/flash.h>
37 #include <plat/mux.h>
38 #include <plat/usb.h>
39 #include <plat/dma.h>
40 #include <plat/tc.h>
41 #include <plat/board.h>
42 #include <plat/irda.h>
43 #include <plat/keypad.h>
44 #include "common.h"
45
46 #include <linux/spi/spi.h>
47 #include <linux/spi/ads7846.h>
48
49 #define PALMZ71_USBDETECT_GPIO 0
50 #define PALMZ71_PENIRQ_GPIO 6
51 #define PALMZ71_MMC_WP_GPIO 8
52 #define PALMZ71_HDQ_GPIO 11
53
54 #define PALMZ71_HOTSYNC_GPIO OMAP_MPUIO(1)
55 #define PALMZ71_CABLE_GPIO OMAP_MPUIO(2)
56 #define PALMZ71_SLIDER_GPIO OMAP_MPUIO(3)
57 #define PALMZ71_MMC_IN_GPIO OMAP_MPUIO(4)
58
59 static const unsigned int palmz71_keymap[] = {
60 KEY(0, 0, KEY_F1),
61 KEY(1, 0, KEY_F2),
62 KEY(2, 0, KEY_F3),
63 KEY(3, 0, KEY_F4),
64 KEY(4, 0, KEY_POWER),
65 KEY(0, 1, KEY_LEFT),
66 KEY(1, 1, KEY_DOWN),
67 KEY(2, 1, KEY_UP),
68 KEY(3, 1, KEY_RIGHT),
69 KEY(4, 1, KEY_ENTER),
70 KEY(0, 2, KEY_CAMERA),
71 };
72
73 static const struct matrix_keymap_data palmz71_keymap_data = {
74 .keymap = palmz71_keymap,
75 .keymap_size = ARRAY_SIZE(palmz71_keymap),
76 };
77
78 static struct omap_kp_platform_data palmz71_kp_data = {
79 .rows = 8,
80 .cols = 8,
81 .keymap_data = &palmz71_keymap_data,
82 .rep = true,
83 .delay = 80,
84 };
85
86 static struct resource palmz71_kp_resources[] = {
87 [0] = {
88 .start = INT_KEYBOARD,
89 .end = INT_KEYBOARD,
90 .flags = IORESOURCE_IRQ,
91 },
92 };
93
94 static struct platform_device palmz71_kp_device = {
95 .name = "omap-keypad",
96 .id = -1,
97 .dev = {
98 .platform_data = &palmz71_kp_data,
99 },
100 .num_resources = ARRAY_SIZE(palmz71_kp_resources),
101 .resource = palmz71_kp_resources,
102 };
103
104 static struct mtd_partition palmz71_rom_partitions[] = {
105 /* PalmOS "Small ROM", contains the bootloader and the debugger */
106 {
107 .name = "smallrom",
108 .offset = 0,
109 .size = 0xa000,
110 .mask_flags = MTD_WRITEABLE,
111 },
112 /* PalmOS "Big ROM", a filesystem with all the OS code and data */
113 {
114 .name = "bigrom",
115 .offset = SZ_128K,
116 /*
117 * 0x5f0000 bytes big in the multi-language ("EFIGS") version,
118 * 0x7b0000 bytes in the English-only ("enUS") version.
119 */
120 .size = 0x7b0000,
121 .mask_flags = MTD_WRITEABLE,
122 },
123 };
124
125 static struct physmap_flash_data palmz71_rom_data = {
126 .width = 2,
127 .set_vpp = omap1_set_vpp,
128 .parts = palmz71_rom_partitions,
129 .nr_parts = ARRAY_SIZE(palmz71_rom_partitions),
130 };
131
132 static struct resource palmz71_rom_resource = {
133 .start = OMAP_CS0_PHYS,
134 .end = OMAP_CS0_PHYS + SZ_8M - 1,
135 .flags = IORESOURCE_MEM,
136 };
137
138 static struct platform_device palmz71_rom_device = {
139 .name = "physmap-flash",
140 .id = -1,
141 .dev = {
142 .platform_data = &palmz71_rom_data,
143 },
144 .num_resources = 1,
145 .resource = &palmz71_rom_resource,
146 };
147
148 static struct platform_device palmz71_lcd_device = {
149 .name = "lcd_palmz71",
150 .id = -1,
151 };
152
153 static struct omap_irda_config palmz71_irda_config = {
154 .transceiver_cap = IR_SIRMODE,
155 .rx_channel = OMAP_DMA_UART3_RX,
156 .tx_channel = OMAP_DMA_UART3_TX,
157 .dest_start = UART3_THR,
158 .src_start = UART3_RHR,
159 .tx_trigger = 0,
160 .rx_trigger = 0,
161 };
162
163 static struct resource palmz71_irda_resources[] = {
164 [0] = {
165 .start = INT_UART3,
166 .end = INT_UART3,
167 .flags = IORESOURCE_IRQ,
168 },
169 };
170
171 static struct platform_device palmz71_irda_device = {
172 .name = "omapirda",
173 .id = -1,
174 .dev = {
175 .platform_data = &palmz71_irda_config,
176 },
177 .num_resources = ARRAY_SIZE(palmz71_irda_resources),
178 .resource = palmz71_irda_resources,
179 };
180
181 static struct platform_device palmz71_spi_device = {
182 .name = "spi_palmz71",
183 .id = -1,
184 };
185
186 static struct omap_backlight_config palmz71_backlight_config = {
187 .default_intensity = 0xa0,
188 };
189
190 static struct platform_device palmz71_backlight_device = {
191 .name = "omap-bl",
192 .id = -1,
193 .dev = {
194 .platform_data = &palmz71_backlight_config,
195 },
196 };
197
198 static struct platform_device *devices[] __initdata = {
199 &palmz71_rom_device,
200 &palmz71_kp_device,
201 &palmz71_lcd_device,
202 &palmz71_irda_device,
203 &palmz71_spi_device,
204 &palmz71_backlight_device,
205 };
206
207 static int
palmz71_get_pendown_state(void)208 palmz71_get_pendown_state(void)
209 {
210 return !gpio_get_value(PALMZ71_PENIRQ_GPIO);
211 }
212
213 static const struct ads7846_platform_data palmz71_ts_info = {
214 .model = 7846,
215 .vref_delay_usecs = 100, /* internal, no capacitor */
216 .x_plate_ohms = 419,
217 .y_plate_ohms = 486,
218 .get_pendown_state = palmz71_get_pendown_state,
219 };
220
221 static struct spi_board_info __initdata palmz71_boardinfo[] = { {
222 /* MicroWire (bus 2) CS0 has an ads7846e */
223 .modalias = "ads7846",
224 .platform_data = &palmz71_ts_info,
225 .irq = OMAP_GPIO_IRQ(PALMZ71_PENIRQ_GPIO),
226 .max_speed_hz = 120000 /* max sample rate at 3V */
227 * 26 /* command + data + overhead */,
228 .bus_num = 2,
229 .chip_select = 0,
230 } };
231
232 static struct omap_usb_config palmz71_usb_config __initdata = {
233 .register_dev = 1, /* Mini-B only receptacle */
234 .hmc_mode = 0,
235 .pins[0] = 2,
236 };
237
238 static struct omap_lcd_config palmz71_lcd_config __initdata = {
239 .ctrl_name = "internal",
240 };
241
242 static struct omap_board_config_kernel palmz71_config[] __initdata = {
243 {OMAP_TAG_LCD, &palmz71_lcd_config},
244 };
245
246 static irqreturn_t
palmz71_powercable(int irq,void * dev_id)247 palmz71_powercable(int irq, void *dev_id)
248 {
249 if (gpio_get_value(PALMZ71_USBDETECT_GPIO)) {
250 printk(KERN_INFO "PM: Power cable connected\n");
251 irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
252 IRQ_TYPE_EDGE_FALLING);
253 } else {
254 printk(KERN_INFO "PM: Power cable disconnected\n");
255 irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
256 IRQ_TYPE_EDGE_RISING);
257 }
258 return IRQ_HANDLED;
259 }
260
261 static void __init
omap_mpu_wdt_mode(int mode)262 omap_mpu_wdt_mode(int mode)
263 {
264 if (mode)
265 omap_writew(0x8000, OMAP_WDT_TIMER_MODE);
266 else {
267 omap_writew(0x00f5, OMAP_WDT_TIMER_MODE);
268 omap_writew(0x00a0, OMAP_WDT_TIMER_MODE);
269 }
270 }
271
272 static void __init
palmz71_gpio_setup(int early)273 palmz71_gpio_setup(int early)
274 {
275 if (early) {
276 /* Only set GPIO1 so we have a working serial */
277 gpio_direction_output(1, 1);
278 } else {
279 /* Set MMC/SD host WP pin as input */
280 if (gpio_request(PALMZ71_MMC_WP_GPIO, "MMC WP") < 0) {
281 printk(KERN_ERR "Could not reserve WP GPIO!\n");
282 return;
283 }
284 gpio_direction_input(PALMZ71_MMC_WP_GPIO);
285
286 /* Monitor the Power-cable-connected signal */
287 if (gpio_request(PALMZ71_USBDETECT_GPIO, "USB detect") < 0) {
288 printk(KERN_ERR
289 "Could not reserve cable signal GPIO!\n");
290 return;
291 }
292 gpio_direction_input(PALMZ71_USBDETECT_GPIO);
293 if (request_irq(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
294 palmz71_powercable, IRQF_SAMPLE_RANDOM,
295 "palmz71-cable", 0))
296 printk(KERN_ERR
297 "IRQ request for power cable failed!\n");
298 palmz71_powercable(gpio_to_irq(PALMZ71_USBDETECT_GPIO), 0);
299 }
300 }
301
302 static void __init
omap_palmz71_init(void)303 omap_palmz71_init(void)
304 {
305 /* mux pins for uarts */
306 omap_cfg_reg(UART1_TX);
307 omap_cfg_reg(UART1_RTS);
308 omap_cfg_reg(UART2_TX);
309 omap_cfg_reg(UART2_RTS);
310 omap_cfg_reg(UART3_TX);
311 omap_cfg_reg(UART3_RX);
312
313 palmz71_gpio_setup(1);
314 omap_mpu_wdt_mode(0);
315
316 omap_board_config = palmz71_config;
317 omap_board_config_size = ARRAY_SIZE(palmz71_config);
318
319 platform_add_devices(devices, ARRAY_SIZE(devices));
320
321 spi_register_board_info(palmz71_boardinfo,
322 ARRAY_SIZE(palmz71_boardinfo));
323 omap1_usb_init(&palmz71_usb_config);
324 omap_serial_init();
325 omap_register_i2c_bus(1, 100, NULL, 0);
326 palmz71_gpio_setup(0);
327 }
328
329 MACHINE_START(OMAP_PALMZ71, "OMAP310 based Palm Zire71")
330 .atag_offset = 0x100,
331 .map_io = omap15xx_map_io,
332 .init_early = omap1_init_early,
333 .reserve = omap_reserve,
334 .init_irq = omap1_init_irq,
335 .init_machine = omap_palmz71_init,
336 .timer = &omap1_timer,
337 .restart = omap1_restart,
338 MACHINE_END
339