// SPDX-License-Identifier: GPL-2.0-only
/*
 *  linux/arch/arm/mach-pxa/pcm027.c
 *  Support for the Phytec phyCORE-PXA270 CPU card (aka PCM-027).
 *
 *  Refer
 *   http://www.phytec.com/products/sbc/ARM-XScale/phyCORE-XScale-PXA270.html
 *  for additional hardware info
 *
 *  Author:     Juergen Kilb
 *  Created:    April 05, 2005
 *  Copyright:  Phytec Messtechnik GmbH
 *  e-Mail:     armlinux@phytec.de
 *
 *  based on Intel Mainstone Board
 *
 *  Copyright 2007 Juergen Beisert @ Pengutronix (j.beisert@pengutronix.de)
 */

#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/mtd/physmap.h>
#include <linux/spi/spi.h>
#include <linux/spi/max7301.h>
#include <linux/spi/pxa2xx_spi.h>
#include <linux/leds.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include "pxa27x.h"
#include "pcm027.h"
#include "generic.h"

/*
 * ABSTRACT:
 *
 * The PXA270 processor comes with a bunch of hardware on its silicon.
 * Not all of this hardware can be used at the same time and not all
 * is routed to module's connectors. Also it depends on the baseboard, what
 * kind of hardware can be used in which way.
 * -> So this file supports the main devices on the CPU card only!
 * Refer pcm990-baseboard.c how to extend this features to get a full
 * blown system with many common interfaces.
 *
 * The PCM-027 supports the following interfaces through its connectors and
 * will be used in pcm990-baseboard.c:
 *
 * - LCD support
 * - MMC support
 * - IDE/CF card
 * - FFUART
 * - BTUART
 * - IRUART
 * - AC97
 * - SSP
 * - SSP3
 *
 * Claimed GPIOs:
 * GPIO0 -> IRQ input from RTC
 * GPIO2 -> SYS_ENA*)
 * GPIO3 -> PWR_SCL
 * GPIO4 -> PWR_SDA
 * GPIO5 -> PowerCap0*)
 * GPIO6 -> PowerCap1*)
 * GPIO7 -> PowerCap2*)
 * GPIO8 -> PowerCap3*)
 * GPIO15 -> /CS1
 * GPIO20 -> /CS2
 * GPIO21 -> /CS3
 * GPIO33 -> /CS5 network controller select
 * GPIO52 -> IRQ from network controller
 * GPIO78 -> /CS2
 * GPIO80 -> /CS4
 * GPIO90 -> LED0
 * GPIO91 -> LED1
 * GPIO114 -> IRQ from CAN controller
 * GPIO117 -> SCL
 * GPIO118 -> SDA
 *
 * *) CPU internal use only
 */

static unsigned long pcm027_pin_config[] __initdata = {
        /* Chip Selects */
        GPIO20_nSDCS_2,
        GPIO21_nSDCS_3,
        GPIO15_nCS_1,
        GPIO78_nCS_2,
        GPIO80_nCS_4,
        GPIO33_nCS_5,   /* Ethernet */

        /* I2C */
        GPIO117_I2C_SCL,
        GPIO118_I2C_SDA,

        /* GPIO */
        GPIO52_GPIO,    /* IRQ from network controller */
#ifdef CONFIG_LEDS_GPIO
        GPIO90_GPIO,    /* PCM027_LED_CPU */
        GPIO91_GPIO,    /* PCM027_LED_HEART_BEAT */
#endif
        GPIO114_GPIO,   /* IRQ from CAN controller */
};

/*
 * SMC91x network controller specific stuff
 */
static struct resource smc91x_resources[] = {
        [0] = {
                .start  = PCM027_ETH_PHYS + 0x300,
                .end    = PCM027_ETH_PHYS + PCM027_ETH_SIZE,
                .flags  = IORESOURCE_MEM,
        },
        [1] = {
                .start  = PCM027_ETH_IRQ,
                .end    = PCM027_ETH_IRQ,
                /* note: smc91x's driver doesn't use the trigger bits yet */
                .flags  = IORESOURCE_IRQ | PCM027_ETH_IRQ_EDGE,
        }
};

static struct platform_device smc91x_device = {
        .name           = "smc91x",
        .id             = 0,
        .num_resources  = ARRAY_SIZE(smc91x_resources),
        .resource       = smc91x_resources,
};

/*
 * SPI host and devices
 */
static struct pxa2xx_spi_controller pxa_ssp_master_info = {
        .num_chipselect = 1,
};

static struct max7301_platform_data max7301_info = {
        .base = -1,
};

/* bus_num must match id in pxa2xx_set_spi_info() call */
static struct spi_board_info spi_board_info[] __initdata = {
        {
                .modalias       = "max7301",
                .platform_data  = &max7301_info,
                .max_speed_hz   = 13000000,
                .bus_num        = 1,
                .chip_select    = 0,
                .mode           = SPI_MODE_0,
        },
};

/*
 * NOR flash
 */
static struct physmap_flash_data pcm027_flash_data = {
        .width  = 4,
};

static struct resource pcm027_flash_resource = {
        .start          = PCM027_FLASH_PHYS,
        .end            = PCM027_FLASH_PHYS + PCM027_FLASH_SIZE - 1 ,
        .flags          = IORESOURCE_MEM,
};

static struct platform_device pcm027_flash = {
        .name           = "physmap-flash",
        .id             = 0,
        .dev            = {
                .platform_data  = &pcm027_flash_data,
        },
        .resource       = &pcm027_flash_resource,
        .num_resources  = 1,
};

#ifdef CONFIG_LEDS_GPIO

static struct gpio_led pcm027_led[] = {
        {
                .name = "led0:red",     /* FIXME */
                .gpio = PCM027_LED_CPU
        },
        {
                .name = "led1:green",   /* FIXME */
                .gpio = PCM027_LED_HEARD_BEAT
        },
};

static struct gpio_led_platform_data pcm027_led_data = {
        .num_leds       = ARRAY_SIZE(pcm027_led),
        .leds           = pcm027_led
};

static struct platform_device pcm027_led_dev = {
        .name           = "leds-gpio",
        .id             = 0,
        .dev            = {
                .platform_data  = &pcm027_led_data,
        },
};

#endif /* CONFIG_LEDS_GPIO */

/*
 * declare the available device resources on this board
 */
static struct platform_device *devices[] __initdata = {
        &smc91x_device,
        &pcm027_flash,
#ifdef CONFIG_LEDS_GPIO
        &pcm027_led_dev
#endif
};

/*
 * pcm027_init - breath some life into the board
 */
static void __init pcm027_init(void)
{
        /* system bus arbiter setting
         * - Core_Park
         * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
         */
        ARB_CNTRL = ARB_CORE_PARK | 0x234;

        pxa2xx_mfp_config(pcm027_pin_config, ARRAY_SIZE(pcm027_pin_config));

        pxa_set_ffuart_info(NULL);
        pxa_set_btuart_info(NULL);
        pxa_set_stuart_info(NULL);

        platform_add_devices(devices, ARRAY_SIZE(devices));

        /* at last call the baseboard to initialize itself */
#ifdef CONFIG_MACH_PCM990_BASEBOARD
        pcm990_baseboard_init();
#endif

        pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
        spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
}

static void __init pcm027_map_io(void)
{
        pxa27x_map_io();

        /* initialize sleep mode regs (wake-up sources, etc) */
        PGSR0 = 0x01308000;
        PGSR1 = 0x00CF0002;
        PGSR2 = 0x0E294000;
        PGSR3 = 0x0000C000;
        PWER  = 0x40000000 | PWER_GPIO0 | PWER_GPIO1;
        PRER  = 0x00000000;
        PFER  = 0x00000003;
}

MACHINE_START(PCM027, "Phytec Messtechnik GmbH phyCORE-PXA270")
        /* Maintainer: Pengutronix */
        .atag_offset    = 0x100,
        .map_io         = pcm027_map_io,
        .nr_irqs        = PCM027_NR_IRQS,
        .init_irq       = pxa27x_init_irq,
        .handle_irq     = pxa27x_handle_irq,
        .init_time      = pxa_timer_init,
        .init_machine   = pcm027_init,
        .restart        = pxa_restart,
MACHINE_END