// SPDX-License-Identifier: GPL-2.0-only
/*
 * linux/arch/arm/mach-omap1/board-palmte.c
 *
 * Modified from board-generic.c
 *
 * Support for the Palm Tungsten E PDA.
 *
 * Original version : Laurent Gonzalez
 *
 * Maintainers : http://palmtelinux.sf.net
 *                palmtelinux-developpers@lists.sf.net
 *
 * Copyright (c) 2006 Andrzej Zaborowski  <balrog@zabor.org>
 */
#include <linux/gpio/machine.h>
#include <linux/gpio/consumer.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/spi/spi.h>
#include <linux/interrupt.h>
#include <linux/apm-emulation.h>
#include <linux/omapfb.h>
#include <linux/omap-dma.h>
#include <linux/platform_data/keypad-omap.h>
#include <linux/platform_data/omap1_bl.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>

#include "tc.h"
#include "flash.h"
#include "mux.h"
#include "hardware.h"
#include "usb.h"
#include "mmc.h"
#include "common.h"

#define PALMTE_USBDETECT_GPIO   0
#define PALMTE_USB_OR_DC_GPIO   1
#define PALMTE_TSC_GPIO         4
#define PALMTE_PINTDAV_GPIO     6
#define PALMTE_MMC_WP_GPIO      8
#define PALMTE_MMC_POWER_GPIO   9
#define PALMTE_HDQ_GPIO         11
#define PALMTE_HEADPHONES_GPIO  14
#define PALMTE_SPEAKER_GPIO     15

static const unsigned int palmte_keymap[] = {
        KEY(0, 0, KEY_F1),              /* Calendar */
        KEY(1, 0, KEY_F2),              /* Contacts */
        KEY(2, 0, KEY_F3),              /* Tasks List */
        KEY(3, 0, KEY_F4),              /* Note Pad */
        KEY(4, 0, KEY_POWER),
        KEY(0, 1, KEY_LEFT),
        KEY(1, 1, KEY_DOWN),
        KEY(2, 1, KEY_UP),
        KEY(3, 1, KEY_RIGHT),
        KEY(4, 1, KEY_ENTER),
};

static const struct matrix_keymap_data palmte_keymap_data = {
        .keymap         = palmte_keymap,
        .keymap_size    = ARRAY_SIZE(palmte_keymap),
};

static struct omap_kp_platform_data palmte_kp_data = {
        .rows   = 8,
        .cols   = 8,
        .keymap_data = &palmte_keymap_data,
        .rep    = true,
        .delay  = 12,
};

static struct resource palmte_kp_resources[] = {
        [0]     = {
                .start  = INT_KEYBOARD,
                .end    = INT_KEYBOARD,
                .flags  = IORESOURCE_IRQ,
        },
};

static struct platform_device palmte_kp_device = {
        .name           = "omap-keypad",
        .id             = -1,
        .dev            = {
                .platform_data  = &palmte_kp_data,
        },
        .num_resources  = ARRAY_SIZE(palmte_kp_resources),
        .resource       = palmte_kp_resources,
};

static struct mtd_partition palmte_rom_partitions[] = {
        /* PalmOS "Small ROM", contains the bootloader and the debugger */
        {
                .name           = "smallrom",
                .offset         = 0,
                .size           = 0xa000,
                .mask_flags     = MTD_WRITEABLE,
        },
        /* PalmOS "Big ROM", a filesystem with all the OS code and data */
        {
                .name           = "bigrom",
                .offset         = SZ_128K,
                /*
                 * 0x5f0000 bytes big in the multi-language ("EFIGS") version,
                 * 0x7b0000 bytes in the English-only ("enUS") version.
                 */
                .size           = 0x7b0000,
                .mask_flags     = MTD_WRITEABLE,
        },
};

static struct physmap_flash_data palmte_rom_data = {
        .width          = 2,
        .set_vpp        = omap1_set_vpp,
        .parts          = palmte_rom_partitions,
        .nr_parts       = ARRAY_SIZE(palmte_rom_partitions),
};

static struct resource palmte_rom_resource = {
        .start          = OMAP_CS0_PHYS,
        .end            = OMAP_CS0_PHYS + SZ_8M - 1,
        .flags          = IORESOURCE_MEM,
};

static struct platform_device palmte_rom_device = {
        .name           = "physmap-flash",
        .id             = -1,
        .dev            = {
                .platform_data  = &palmte_rom_data,
        },
        .num_resources  = 1,
        .resource       = &palmte_rom_resource,
};

static struct platform_device palmte_lcd_device = {
        .name           = "lcd_palmte",
        .id             = -1,
};

static struct omap_backlight_config palmte_backlight_config = {
        .default_intensity      = 0xa0,
};

static struct platform_device palmte_backlight_device = {
        .name           = "omap-bl",
        .id             = -1,
        .dev            = {
                .platform_data  = &palmte_backlight_config,
        },
};

static struct platform_device *palmte_devices[] __initdata = {
        &palmte_rom_device,
        &palmte_kp_device,
        &palmte_lcd_device,
        &palmte_backlight_device,
};

static struct omap_usb_config palmte_usb_config __initdata = {
        .register_dev   = 1,    /* Mini-B only receptacle */
        .hmc_mode       = 0,
        .pins[0]        = 2,
};

static const struct omap_lcd_config palmte_lcd_config __initconst = {
        .ctrl_name      = "internal",
};

static struct spi_board_info palmte_spi_info[] __initdata = {
        {
                .modalias       = "tsc2102",
                .bus_num        = 2,    /* uWire (officially) */
                .chip_select    = 0,    /* As opposed to 3 */
                .max_speed_hz   = 8000000,
        },
};

#if IS_ENABLED(CONFIG_MMC_OMAP)

static struct omap_mmc_platform_data _palmte_mmc_config = {
        .nr_slots                       = 1,
        .slots[0]                       = {
                .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
                .name                   = "mmcblk",
        },
};

static struct omap_mmc_platform_data *palmte_mmc_config[OMAP15XX_NR_MMC] = {
        [0] = &_palmte_mmc_config,
};

static void palmte_mmc_init(void)
{
        omap1_init_mmc(palmte_mmc_config, OMAP15XX_NR_MMC);
}

#else /* CONFIG_MMC_OMAP */

static void palmte_mmc_init(void)
{
}

#endif /* CONFIG_MMC_OMAP */

static struct gpiod_lookup_table palmte_irq_gpio_table = {
        .dev_id = NULL,
        .table = {
                /* GPIO used for TSC2102 PINTDAV IRQ */
                GPIO_LOOKUP("gpio-0-15", PALMTE_PINTDAV_GPIO, "tsc2102_irq",
                            GPIO_ACTIVE_HIGH),
                /* GPIO used for USB or DC input detection */
                GPIO_LOOKUP("gpio-0-15", PALMTE_USB_OR_DC_GPIO, "usb_dc_irq",
                            GPIO_ACTIVE_HIGH),
                { }
        },
};

static void __init omap_palmte_init(void)
{
        struct gpio_desc *d;

        /* mux pins for uarts */
        omap_cfg_reg(UART1_TX);
        omap_cfg_reg(UART1_RTS);
        omap_cfg_reg(UART2_TX);
        omap_cfg_reg(UART2_RTS);
        omap_cfg_reg(UART3_TX);
        omap_cfg_reg(UART3_RX);

        platform_add_devices(palmte_devices, ARRAY_SIZE(palmte_devices));

        gpiod_add_lookup_table(&palmte_irq_gpio_table);
        d = gpiod_get(NULL, "tsc2102_irq", GPIOD_IN);
        if (IS_ERR(d))
                pr_err("Unable to get TSC2102 IRQ GPIO descriptor\n");
        else
                palmte_spi_info[0].irq = gpiod_to_irq(d);
        spi_register_board_info(palmte_spi_info, ARRAY_SIZE(palmte_spi_info));

        /* We are getting this just to set it up as input */
        d = gpiod_get(NULL, "usb_dc_irq", GPIOD_IN);
        if (IS_ERR(d))
                pr_err("Unable to get USB/DC IRQ GPIO descriptor\n");
        else
                gpiod_put(d);

        omap_serial_init();
        omap1_usb_init(&palmte_usb_config);
        omap_register_i2c_bus(1, 100, NULL, 0);

        omapfb_set_lcd_config(&palmte_lcd_config);
        palmte_mmc_init();
}

MACHINE_START(OMAP_PALMTE, "OMAP310 based Palm Tungsten E")
        .atag_offset    = 0x100,
        .map_io         = omap1_map_io,
        .init_early     = omap1_init_early,
        .init_irq       = omap1_init_irq,
        .init_machine   = omap_palmte_init,
        .init_late      = omap1_init_late,
        .init_time      = omap1_timer_init,
        .restart        = omap1_restart,
MACHINE_END