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Linux/arch/arm/mach-omap1/board-palmz71.c

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  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 
 60 static 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 
 74 static const struct matrix_keymap_data palmz71_keymap_data = {
 75         .keymap         = palmz71_keymap,
 76         .keymap_size    = ARRAY_SIZE(palmz71_keymap),
 77 };
 78 
 79 static 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 
 87 static struct resource palmz71_kp_resources[] = {
 88         [0] = {
 89                 .start  = INT_KEYBOARD,
 90                 .end    = INT_KEYBOARD,
 91                 .flags  = IORESOURCE_IRQ,
 92         },
 93 };
 94 
 95 static 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 
105 static 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 
126 static 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 
133 static struct resource palmz71_rom_resource = {
134         .start  = OMAP_CS0_PHYS,
135         .end    = OMAP_CS0_PHYS + SZ_8M - 1,
136         .flags  = IORESOURCE_MEM,
137 };
138 
139 static 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 
149 static struct platform_device palmz71_lcd_device = {
150         .name   = "lcd_palmz71",
151         .id     = -1,
152 };
153 
154 static struct platform_device palmz71_spi_device = {
155         .name   = "spi_palmz71",
156         .id     = -1,
157 };
158 
159 static struct omap_backlight_config palmz71_backlight_config = {
160         .default_intensity      = 0xa0,
161 };
162 
163 static struct platform_device palmz71_backlight_device = {
164         .name   = "omap-bl",
165         .id     = -1,
166         .dev    = {
167                 .platform_data = &palmz71_backlight_config,
168         },
169 };
170 
171 static 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 
179 static int
180 palmz71_get_pendown_state(void)
181 {
182         return !gpio_get_value(PALMZ71_PENIRQ_GPIO);
183 }
184 
185 static 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 
193 static 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 
203 static 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 
209 static struct omap_lcd_config palmz71_lcd_config __initdata = {
210         .ctrl_name = "internal",
211 };
212 
213 static irqreturn_t
214 palmz71_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 
228 static void __init
229 omap_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 
239 static void __init
240 palmz71_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 
268 static void __init
269 omap_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 
295 MACHINE_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         .init_machine   = omap_palmz71_init,
301         .init_late      = omap1_init_late,
302         .init_time      = omap1_timer_init,
303         .restart        = omap1_restart,
304 MACHINE_END
305 

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