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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * linux/arch/arm/mach-omap1/board-palmz71.c
   4  *
   5  * Modified from board-generic.c
   6  *
   7  * Support for the Palm Zire71 PDA.
   8  *
   9  * Original version : Laurent Gonzalez
  10  *
  11  * Modified for zire71 : Marek Vasut
  12  */
  13
  14 #include <linux/delay.h>
  15 #include <linux/gpio.h>
  16 #include <linux/kernel.h>
  17 #include <linux/init.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/notifier.h>
  20 #include <linux/clk.h>
  21 #include <linux/irq.h>
  22 #include <linux/input.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/mtd/mtd.h>
  25 #include <linux/mtd/partitions.h>
  26 #include <linux/mtd/physmap.h>
  27 #include <linux/omapfb.h>
  28 #include <linux/spi/spi.h>
  29 #include <linux/spi/ads7846.h>
  30 #include <linux/platform_data/omap1_bl.h>
  31
  32 #include <asm/mach-types.h>
  33 #include <asm/mach/arch.h>
  34 #include <asm/mach/map.h>
  35
  36 #include "flash.h"
  37 #include <mach/mux.h>
  38 #include <linux/omap-dma.h>
  39 #include <mach/tc.h>
  40 #include <linux/platform_data/keypad-omap.h>
  41
  42 #include <mach/hardware.h>
  43 #include <mach/usb.h>
  44
  45 #include "common.h"
  46
  47 #define PALMZ71_USBDETECT_GPIO  0
  48 #define PALMZ71_PENIRQ_GPIO     6
  49 #define PALMZ71_MMC_WP_GPIO     8
  50 #define PALMZ71_HDQ_GPIO        11
  51
  52 #define PALMZ71_HOTSYNC_GPIO    OMAP_MPUIO(1)
  53 #define PALMZ71_CABLE_GPIO      OMAP_MPUIO(2)
  54 #define PALMZ71_SLIDER_GPIO     OMAP_MPUIO(3)
  55 #define PALMZ71_MMC_IN_GPIO     OMAP_MPUIO(4)
  56
  57 static const unsigned int palmz71_keymap[] = {
  58         KEY(0, 0, KEY_F1),
  59         KEY(1, 0, KEY_F2),
  60         KEY(2, 0, KEY_F3),
  61         KEY(3, 0, KEY_F4),
  62         KEY(4, 0, KEY_POWER),
  63         KEY(0, 1, KEY_LEFT),
  64         KEY(1, 1, KEY_DOWN),
  65         KEY(2, 1, KEY_UP),
  66         KEY(3, 1, KEY_RIGHT),
  67         KEY(4, 1, KEY_ENTER),
  68         KEY(0, 2, KEY_CAMERA),
  69 };
  70
  71 static const struct matrix_keymap_data palmz71_keymap_data = {
  72         .keymap         = palmz71_keymap,
  73         .keymap_size    = ARRAY_SIZE(palmz71_keymap),
  74 };
  75
  76 static struct omap_kp_platform_data palmz71_kp_data = {
  77         .rows   = 8,
  78         .cols   = 8,
  79         .keymap_data    = &palmz71_keymap_data,
  80         .rep    = true,
  81         .delay  = 80,
  82 };
  83
  84 static struct resource palmz71_kp_resources[] = {
  85         [0] = {
  86                 .start  = INT_KEYBOARD,
  87                 .end    = INT_KEYBOARD,
  88                 .flags  = IORESOURCE_IRQ,
  89         },
  90 };
  91
  92 static struct platform_device palmz71_kp_device = {
  93         .name   = "omap-keypad",
  94         .id     = -1,
  95         .dev    = {
  96                 .platform_data = &palmz71_kp_data,
  97         },
  98         .num_resources  = ARRAY_SIZE(palmz71_kp_resources),
  99         .resource       = palmz71_kp_resources,
 100 };
 101
 102 static struct mtd_partition palmz71_rom_partitions[] = {
 103         /* PalmOS "Small ROM", contains the bootloader and the debugger */
 104         {
 105                 .name           = "smallrom",
 106                 .offset         = 0,
 107                 .size           = 0xa000,
 108                 .mask_flags     = MTD_WRITEABLE,
 109         },
 110         /* PalmOS "Big ROM", a filesystem with all the OS code and data */
 111         {
 112                 .name   = "bigrom",
 113                 .offset = SZ_128K,
 114                 /*
 115                  * 0x5f0000 bytes big in the multi-language ("EFIGS") version,
 116                  * 0x7b0000 bytes in the English-only ("enUS") version.
 117                  */
 118                 .size           = 0x7b0000,
 119                 .mask_flags     = MTD_WRITEABLE,
 120         },
 121 };
 122
 123 static struct physmap_flash_data palmz71_rom_data = {
 124         .width          = 2,
 125         .set_vpp        = omap1_set_vpp,
 126         .parts          = palmz71_rom_partitions,
 127         .nr_parts       = ARRAY_SIZE(palmz71_rom_partitions),
 128 };
 129
 130 static struct resource palmz71_rom_resource = {
 131         .start  = OMAP_CS0_PHYS,
 132         .end    = OMAP_CS0_PHYS + SZ_8M - 1,
 133         .flags  = IORESOURCE_MEM,
 134 };
 135
 136 static struct platform_device palmz71_rom_device = {
 137         .name   = "physmap-flash",
 138         .id     = -1,
 139         .dev = {
 140                 .platform_data = &palmz71_rom_data,
 141         },
 142         .num_resources  = 1,
 143         .resource       = &palmz71_rom_resource,
 144 };
 145
 146 static struct platform_device palmz71_lcd_device = {
 147         .name   = "lcd_palmz71",
 148         .id     = -1,
 149 };
 150
 151 static struct platform_device palmz71_spi_device = {
 152         .name   = "spi_palmz71",
 153         .id     = -1,
 154 };
 155
 156 static struct omap_backlight_config palmz71_backlight_config = {
 157         .default_intensity      = 0xa0,
 158 };
 159
 160 static struct platform_device palmz71_backlight_device = {
 161         .name   = "omap-bl",
 162         .id     = -1,
 163         .dev    = {
 164                 .platform_data = &palmz71_backlight_config,
 165         },
 166 };
 167
 168 static struct platform_device *devices[] __initdata = {
 169         &palmz71_rom_device,
 170         &palmz71_kp_device,
 171         &palmz71_lcd_device,
 172         &palmz71_spi_device,
 173         &palmz71_backlight_device,
 174 };
 175
 176 static int
 177 palmz71_get_pendown_state(void)
 178 {
 179         return !gpio_get_value(PALMZ71_PENIRQ_GPIO);
 180 }
 181
 182 static const struct ads7846_platform_data palmz71_ts_info = {
 183         .model                  = 7846,
 184         .vref_delay_usecs       = 100,  /* internal, no capacitor */
 185         .x_plate_ohms           = 419,
 186         .y_plate_ohms           = 486,
 187         .get_pendown_state      = palmz71_get_pendown_state,
 188 };
 189
 190 static struct spi_board_info __initdata palmz71_boardinfo[] = { {
 191         /* MicroWire (bus 2) CS0 has an ads7846e */
 192         .modalias       = "ads7846",
 193         .platform_data  = &palmz71_ts_info,
 194         .max_speed_hz   = 120000        /* max sample rate at 3V */
 195                                 * 26    /* command + data + overhead */,
 196         .bus_num        = 2,
 197         .chip_select    = 0,
 198 } };
 199
 200 static struct omap_usb_config palmz71_usb_config __initdata = {
 201         .register_dev   = 1,    /* Mini-B only receptacle */
 202         .hmc_mode       = 0,
 203         .pins[0]        = 2,
 204 };
 205
 206 static const struct omap_lcd_config palmz71_lcd_config __initconst = {
 207         .ctrl_name = "internal",
 208 };
 209
 210 static irqreturn_t
 211 palmz71_powercable(int irq, void *dev_id)
 212 {
 213         if (gpio_get_value(PALMZ71_USBDETECT_GPIO)) {
 214                 printk(KERN_INFO "PM: Power cable connected\n");
 215                 irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 216                                  IRQ_TYPE_EDGE_FALLING);
 217         } else {
 218                 printk(KERN_INFO "PM: Power cable disconnected\n");
 219                 irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 220                                  IRQ_TYPE_EDGE_RISING);
 221         }
 222         return IRQ_HANDLED;
 223 }
 224
 225 static void __init
 226 omap_mpu_wdt_mode(int mode)
 227 {
 228         if (mode)
 229                 omap_writew(0x8000, OMAP_WDT_TIMER_MODE);
 230         else {
 231                 omap_writew(0x00f5, OMAP_WDT_TIMER_MODE);
 232                 omap_writew(0x00a0, OMAP_WDT_TIMER_MODE);
 233         }
 234 }
 235
 236 static void __init
 237 palmz71_gpio_setup(int early)
 238 {
 239         if (early) {
 240                 /* Only set GPIO1 so we have a working serial */
 241                 gpio_direction_output(1, 1);
 242         } else {
 243                 /* Set MMC/SD host WP pin as input */
 244                 if (gpio_request(PALMZ71_MMC_WP_GPIO, "MMC WP") < 0) {
 245                         printk(KERN_ERR "Could not reserve WP GPIO!\n");
 246                         return;
 247                 }
 248                 gpio_direction_input(PALMZ71_MMC_WP_GPIO);
 249
 250                 /* Monitor the Power-cable-connected signal */
 251                 if (gpio_request(PALMZ71_USBDETECT_GPIO, "USB detect") < 0) {
 252                         printk(KERN_ERR
 253                                 "Could not reserve cable signal GPIO!\n");
 254                         return;
 255                 }
 256                 gpio_direction_input(PALMZ71_USBDETECT_GPIO);
 257                 if (request_irq(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 258                                 palmz71_powercable, 0, "palmz71-cable", NULL))
 259                         printk(KERN_ERR
 260                                         "IRQ request for power cable failed!\n");
 261                 palmz71_powercable(gpio_to_irq(PALMZ71_USBDETECT_GPIO), NULL);
 262         }
 263 }
 264
 265 static void __init
 266 omap_palmz71_init(void)
 267 {
 268         /* mux pins for uarts */
 269         omap_cfg_reg(UART1_TX);
 270         omap_cfg_reg(UART1_RTS);
 271         omap_cfg_reg(UART2_TX);
 272         omap_cfg_reg(UART2_RTS);
 273         omap_cfg_reg(UART3_TX);
 274         omap_cfg_reg(UART3_RX);
 275
 276         palmz71_gpio_setup(1);
 277         omap_mpu_wdt_mode(0);
 278
 279         platform_add_devices(devices, ARRAY_SIZE(devices));
 280
 281         palmz71_boardinfo[0].irq = gpio_to_irq(PALMZ71_PENIRQ_GPIO);
 282         spi_register_board_info(palmz71_boardinfo,
 283                                 ARRAY_SIZE(palmz71_boardinfo));
 284         omap1_usb_init(&palmz71_usb_config);
 285         omap_serial_init();
 286         omap_register_i2c_bus(1, 100, NULL, 0);
 287         palmz71_gpio_setup(0);
 288
 289         omapfb_set_lcd_config(&palmz71_lcd_config);
 290 }
 291
 292 MACHINE_START(OMAP_PALMZ71, "OMAP310 based Palm Zire71")
 293         .atag_offset    = 0x100,
 294         .map_io         = omap15xx_map_io,
 295         .init_early     = omap1_init_early,
 296         .init_irq       = omap1_init_irq,
 297         .handle_irq     = omap1_handle_irq,
 298         .init_machine   = omap_palmz71_init,
 299         .init_late      = omap1_init_late,
 300         .init_time      = omap1_timer_init,
 301         .restart        = omap1_restart,
 302 MACHINE_END