linux/arch/arm/mach-omap1/board-palmz71.c
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   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
  57static 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
  71static const struct matrix_keymap_data palmz71_keymap_data = {
  72        .keymap         = palmz71_keymap,
  73        .keymap_size    = ARRAY_SIZE(palmz71_keymap),
  74};
  75
  76static 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
  84static struct resource palmz71_kp_resources[] = {
  85        [0] = {
  86                .start  = INT_KEYBOARD,
  87                .end    = INT_KEYBOARD,
  88                .flags  = IORESOURCE_IRQ,
  89        },
  90};
  91
  92static 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
 102static 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
 123static 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
 130static struct resource palmz71_rom_resource = {
 131        .start  = OMAP_CS0_PHYS,
 132        .end    = OMAP_CS0_PHYS + SZ_8M - 1,
 133        .flags  = IORESOURCE_MEM,
 134};
 135
 136static 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
 146static struct platform_device palmz71_lcd_device = {
 147        .name   = "lcd_palmz71",
 148        .id     = -1,
 149};
 150
 151static struct platform_device palmz71_spi_device = {
 152        .name   = "spi_palmz71",
 153        .id     = -1,
 154};
 155
 156static struct omap_backlight_config palmz71_backlight_config = {
 157        .default_intensity      = 0xa0,
 158};
 159
 160static struct platform_device palmz71_backlight_device = {
 161        .name   = "omap-bl",
 162        .id     = -1,
 163        .dev    = {
 164                .platform_data = &palmz71_backlight_config,
 165        },
 166};
 167
 168static 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
 176static int
 177palmz71_get_pendown_state(void)
 178{
 179        return !gpio_get_value(PALMZ71_PENIRQ_GPIO);
 180}
 181
 182static 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
 190static 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
 200static 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
 206static const struct omap_lcd_config palmz71_lcd_config __initconst = {
 207        .ctrl_name = "internal",
 208};
 209
 210static irqreturn_t
 211palmz71_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
 225static void __init
 226omap_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
 236static void __init
 237palmz71_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
 265static void __init
 266omap_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
 292MACHINE_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,
 302MACHINE_END
 303