// SPDX-License-Identifier: GPL-2.0-only
/*
 * Support for Compaq iPAQ H3600 handheld computer
 *
 * Copyright (c) 2000,1 Compaq Computer Corporation. (Author: Jamey Hicks)
 * Copyright (c) 2009 Dmitry Artamonow <mad_soft@inbox.ru>
 */

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/gpio.h>

#include <video/sa1100fb.h>

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

#include <mach/h3xxx.h>
#include <mach/irqs.h>

#include "generic.h"

static bool h3600_lcd_request(void)
{
        static bool h3600_lcd_ok;
        int rc;

        if (h3600_lcd_ok)
                return true;

        rc = gpio_request(H3XXX_EGPIO_LCD_ON, "LCD power");
        if (rc)
                goto out;
        rc = gpio_direction_output(H3XXX_EGPIO_LCD_ON, 0);
        if (rc)
                goto out_free_on;
        rc = gpio_request(H3600_EGPIO_LCD_PCI, "LCD control");
        if (rc)
                goto out_free_on;
        rc = gpio_direction_output(H3600_EGPIO_LCD_PCI, 0);
        if (rc)
                goto out_free_pci;
        rc = gpio_request(H3600_EGPIO_LCD_5V_ON, "LCD 5v");
        if (rc)
                goto out_free_pci;
        rc = gpio_direction_output(H3600_EGPIO_LCD_5V_ON, 0);
        if (rc)
                goto out_free_5v_on;
        rc = gpio_request(H3600_EGPIO_LVDD_ON, "LCD 9v/-6.5v");
        if (rc)
                goto out_free_5v_on;
        rc = gpio_direction_output(H3600_EGPIO_LVDD_ON, 0);
        if (rc)
                goto out_free_lvdd_on;

        goto out;

out_free_lvdd_on:
        gpio_free(H3600_EGPIO_LVDD_ON);
out_free_5v_on:
        gpio_free(H3600_EGPIO_LCD_5V_ON);
out_free_pci:
        gpio_free(H3600_EGPIO_LCD_PCI);
out_free_on:
        gpio_free(H3XXX_EGPIO_LCD_ON);
out:
        if (rc)
                pr_err("%s: can't request GPIOs\n", __func__);
        else
                h3600_lcd_ok = true;

        return h3600_lcd_ok;
}

static void h3600_lcd_power(int enable)
{
        if (!h3600_lcd_request())
                return;

        gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable);
        gpio_direction_output(H3600_EGPIO_LCD_PCI, enable);
        gpio_direction_output(H3600_EGPIO_LCD_5V_ON, enable);
        gpio_direction_output(H3600_EGPIO_LVDD_ON, enable);
}

static const struct sa1100fb_rgb h3600_rgb_16 = {
        .red    = { .offset = 12, .length = 4, },
        .green  = { .offset = 7,  .length = 4, },
        .blue   = { .offset = 1,  .length = 4, },
        .transp = { .offset = 0,  .length = 0, },
};

static struct sa1100fb_mach_info h3600_lcd_info = {
        .pixclock       = 174757,       .bpp            = 16,
        .xres           = 320,          .yres           = 240,

        .hsync_len      = 3,            .vsync_len      = 3,
        .left_margin    = 12,           .upper_margin   = 10,
        .right_margin   = 17,           .lower_margin   = 1,

        .cmap_static    = 1,

        .lccr0          = LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
        .lccr3          = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),

        .rgb[RGB_16] = &h3600_rgb_16,

        .lcd_power = h3600_lcd_power,
};


static void __init h3600_map_io(void)
{
        h3xxx_map_io();
}

static void __init h3600_mach_init(void)
{
        h3xxx_mach_init();

        sa11x0_register_lcd(&h3600_lcd_info);
}

MACHINE_START(H3600, "Compaq iPAQ H3600")
        .atag_offset    = 0x100,
        .map_io         = h3600_map_io,
        .nr_irqs        = SA1100_NR_IRQS,
        .init_irq       = sa1100_init_irq,
        .init_time      = sa1100_timer_init,
        .init_machine   = h3600_mach_init,
        .init_late      = sa11x0_init_late,
        .restart        = sa11x0_restart,
MACHINE_END