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 <linux/omap-dma.h>
42#include <mach/tc.h>
43#include <linux/platform_data/keypad-omap.h>
44
45#include <mach/hardware.h>
46#include <mach/usb.h>
47
48#include "common.h"
49
50#define PALMZ71_USBDETECT_GPIO	0
51#define PALMZ71_PENIRQ_GPIO	6
52#define PALMZ71_MMC_WP_GPIO	8
53#define PALMZ71_HDQ_GPIO 	11
54
55#define PALMZ71_HOTSYNC_GPIO	OMAP_MPUIO(1)
56#define PALMZ71_CABLE_GPIO	OMAP_MPUIO(2)
57#define PALMZ71_SLIDER_GPIO	OMAP_MPUIO(3)
58#define PALMZ71_MMC_IN_GPIO	OMAP_MPUIO(4)
59
60static const unsigned int palmz71_keymap[] = {
61	KEY(0, 0, KEY_F1),
62	KEY(1, 0, KEY_F2),
63	KEY(2, 0, KEY_F3),
64	KEY(3, 0, KEY_F4),
65	KEY(4, 0, KEY_POWER),
66	KEY(0, 1, KEY_LEFT),
67	KEY(1, 1, KEY_DOWN),
68	KEY(2, 1, KEY_UP),
69	KEY(3, 1, KEY_RIGHT),
70	KEY(4, 1, KEY_ENTER),
71	KEY(0, 2, KEY_CAMERA),
72};
73
74static const struct matrix_keymap_data palmz71_keymap_data = {
75	.keymap		= palmz71_keymap,
76	.keymap_size	= ARRAY_SIZE(palmz71_keymap),
77};
78
79static struct omap_kp_platform_data palmz71_kp_data = {
80	.rows	= 8,
81	.cols	= 8,
82	.keymap_data	= &palmz71_keymap_data,
83	.rep	= true,
84	.delay	= 80,
85};
86
87static struct resource palmz71_kp_resources[] = {
88	[0] = {
89		.start	= INT_KEYBOARD,
90		.end	= INT_KEYBOARD,
91		.flags	= IORESOURCE_IRQ,
92	},
93};
94
95static struct platform_device palmz71_kp_device = {
96	.name	= "omap-keypad",
97	.id	= -1,
98	.dev	= {
99		.platform_data = &palmz71_kp_data,
100	},
101	.num_resources	= ARRAY_SIZE(palmz71_kp_resources),
102	.resource	= palmz71_kp_resources,
103};
104
105static struct mtd_partition palmz71_rom_partitions[] = {
106	/* PalmOS "Small ROM", contains the bootloader and the debugger */
107	{
108		.name		= "smallrom",
109		.offset		= 0,
110		.size		= 0xa000,
111		.mask_flags	= MTD_WRITEABLE,
112	},
113	/* PalmOS "Big ROM", a filesystem with all the OS code and data */
114	{
115		.name	= "bigrom",
116		.offset	= SZ_128K,
117		/*
118		 * 0x5f0000 bytes big in the multi-language ("EFIGS") version,
119		 * 0x7b0000 bytes in the English-only ("enUS") version.
120		 */
121		.size		= 0x7b0000,
122		.mask_flags	= MTD_WRITEABLE,
123	},
124};
125
126static struct physmap_flash_data palmz71_rom_data = {
127	.width		= 2,
128	.set_vpp	= omap1_set_vpp,
129	.parts		= palmz71_rom_partitions,
130	.nr_parts	= ARRAY_SIZE(palmz71_rom_partitions),
131};
132
133static struct resource palmz71_rom_resource = {
134	.start	= OMAP_CS0_PHYS,
135	.end	= OMAP_CS0_PHYS + SZ_8M - 1,
136	.flags	= IORESOURCE_MEM,
137};
138
139static struct platform_device palmz71_rom_device = {
140	.name	= "physmap-flash",
141	.id	= -1,
142	.dev = {
143		.platform_data = &palmz71_rom_data,
144	},
145	.num_resources	= 1,
146	.resource	= &palmz71_rom_resource,
147};
148
149static struct platform_device palmz71_lcd_device = {
150	.name	= "lcd_palmz71",
151	.id	= -1,
152};
153
154static struct platform_device palmz71_spi_device = {
155	.name	= "spi_palmz71",
156	.id	= -1,
157};
158
159static struct omap_backlight_config palmz71_backlight_config = {
160	.default_intensity	= 0xa0,
161};
162
163static struct platform_device palmz71_backlight_device = {
164	.name	= "omap-bl",
165	.id	= -1,
166	.dev	= {
167		.platform_data = &palmz71_backlight_config,
168	},
169};
170
171static struct platform_device *devices[] __initdata = {
172	&palmz71_rom_device,
173	&palmz71_kp_device,
174	&palmz71_lcd_device,
175	&palmz71_spi_device,
176	&palmz71_backlight_device,
177};
178
179static int
180palmz71_get_pendown_state(void)
181{
182	return !gpio_get_value(PALMZ71_PENIRQ_GPIO);
183}
184
185static const struct ads7846_platform_data palmz71_ts_info = {
186	.model			= 7846,
187	.vref_delay_usecs	= 100,	/* internal, no capacitor */
188	.x_plate_ohms		= 419,
189	.y_plate_ohms		= 486,
190	.get_pendown_state	= palmz71_get_pendown_state,
191};
192
193static struct spi_board_info __initdata palmz71_boardinfo[] = { {
194	/* MicroWire (bus 2) CS0 has an ads7846e */
195	.modalias	= "ads7846",
196	.platform_data	= &palmz71_ts_info,
197	.max_speed_hz	= 120000	/* max sample rate at 3V */
198				* 26	/* command + data + overhead */,
199	.bus_num	= 2,
200	.chip_select	= 0,
201} };
202
203static struct omap_usb_config palmz71_usb_config __initdata = {
204	.register_dev	= 1,	/* Mini-B only receptacle */
205	.hmc_mode	= 0,
206	.pins[0]	= 2,
207};
208
209static struct omap_lcd_config palmz71_lcd_config __initdata = {
210	.ctrl_name = "internal",
211};
212
213static irqreturn_t
214palmz71_powercable(int irq, void *dev_id)
215{
216	if (gpio_get_value(PALMZ71_USBDETECT_GPIO)) {
217		printk(KERN_INFO "PM: Power cable connected\n");
218		irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
219				 IRQ_TYPE_EDGE_FALLING);
220	} else {
221		printk(KERN_INFO "PM: Power cable disconnected\n");
222		irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
223				 IRQ_TYPE_EDGE_RISING);
224	}
225	return IRQ_HANDLED;
226}
227
228static void __init
229omap_mpu_wdt_mode(int mode)
230{
231	if (mode)
232		omap_writew(0x8000, OMAP_WDT_TIMER_MODE);
233	else {
234		omap_writew(0x00f5, OMAP_WDT_TIMER_MODE);
235		omap_writew(0x00a0, OMAP_WDT_TIMER_MODE);
236	}
237}
238
239static void __init
240palmz71_gpio_setup(int early)
241{
242	if (early) {
243		/* Only set GPIO1 so we have a working serial */
244		gpio_direction_output(1, 1);
245	} else {
246		/* Set MMC/SD host WP pin as input */
247		if (gpio_request(PALMZ71_MMC_WP_GPIO, "MMC WP") < 0) {
248			printk(KERN_ERR "Could not reserve WP GPIO!\n");
249			return;
250		}
251		gpio_direction_input(PALMZ71_MMC_WP_GPIO);
252
253		/* Monitor the Power-cable-connected signal */
254		if (gpio_request(PALMZ71_USBDETECT_GPIO, "USB detect") < 0) {
255			printk(KERN_ERR
256				"Could not reserve cable signal GPIO!\n");
257			return;
258		}
259		gpio_direction_input(PALMZ71_USBDETECT_GPIO);
260		if (request_irq(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
261				palmz71_powercable, 0, "palmz71-cable", NULL))
262			printk(KERN_ERR
263					"IRQ request for power cable failed!\n");
264		palmz71_powercable(gpio_to_irq(PALMZ71_USBDETECT_GPIO), NULL);
265	}
266}
267
268static void __init
269omap_palmz71_init(void)
270{
271	/* mux pins for uarts */
272	omap_cfg_reg(UART1_TX);
273	omap_cfg_reg(UART1_RTS);
274	omap_cfg_reg(UART2_TX);
275	omap_cfg_reg(UART2_RTS);
276	omap_cfg_reg(UART3_TX);
277	omap_cfg_reg(UART3_RX);
278
279	palmz71_gpio_setup(1);
280	omap_mpu_wdt_mode(0);
281
282	platform_add_devices(devices, ARRAY_SIZE(devices));
283
284	palmz71_boardinfo[0].irq = gpio_to_irq(PALMZ71_PENIRQ_GPIO);
285	spi_register_board_info(palmz71_boardinfo,
286				ARRAY_SIZE(palmz71_boardinfo));
287	omap1_usb_init(&palmz71_usb_config);
288	omap_serial_init();
289	omap_register_i2c_bus(1, 100, NULL, 0);
290	palmz71_gpio_setup(0);
291
292	omapfb_set_lcd_config(&palmz71_lcd_config);
293}
294
295MACHINE_START(OMAP_PALMZ71, "OMAP310 based Palm Zire71")
296	.atag_offset	= 0x100,
297	.map_io		= omap15xx_map_io,
298	.init_early     = omap1_init_early,
299	.init_irq	= omap1_init_irq,
300	.handle_irq	= omap1_handle_irq,
301	.init_machine	= omap_palmz71_init,
302	.init_late	= omap1_init_late,
303	.init_time	= omap1_timer_init,
304	.restart	= omap1_restart,
305MACHINE_END
306