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