src/kernel/linux/v4.19/arch/arm/mach-imx/mach-mx31lilly.c

/*
 *  LILLY-1131 module support
 *
 *    Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
 *
 *  based on code for other MX31 boards,
 *
 *    Copyright 2005-2007 Freescale Semiconductor
 *    Copyright (c) 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com>
 *    Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <linux/types.h>
#include <linux/init.h>
#include <linux/clk.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/moduleparam.h>
#include <linux/smsc911x.h>
#include <linux/mtd/physmap.h>
#include <linux/spi/spi.h>
#include <linux/mfd/mc13783.h>
#include <linux/usb/otg.h>
#include <linux/usb/ulpi.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/fixed.h>

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

#include "board-mx31lilly.h"
#include "common.h"
#include "devices-imx31.h"
#include "ehci.h"
#include "hardware.h"
#include "iomux-mx3.h"
#include "ulpi.h"

/*
 * This file contains module-specific initialization routines for LILLY-1131.
 * Initialization of peripherals found on the baseboard is implemented in the
 * appropriate baseboard support code.
 */

static unsigned int mx31lilly_pins[] __initdata = {
	MX31_PIN_CTS1__CTS1,
	MX31_PIN_RTS1__RTS1,
	MX31_PIN_TXD1__TXD1,
	MX31_PIN_RXD1__RXD1,
	MX31_PIN_CTS2__CTS2,
	MX31_PIN_RTS2__RTS2,
	MX31_PIN_TXD2__TXD2,
	MX31_PIN_RXD2__RXD2,
	MX31_PIN_CSPI3_MOSI__RXD3,
	MX31_PIN_CSPI3_MISO__TXD3,
	MX31_PIN_CSPI3_SCLK__RTS3,
	MX31_PIN_CSPI3_SPI_RDY__CTS3,
};

/* UART */
static const struct imxuart_platform_data uart_pdata __initconst = {
	.flags = IMXUART_HAVE_RTSCTS,
};

/* SMSC ethernet support */

static struct resource smsc91x_resources[] = {
	{
		.start	= MX31_CS4_BASE_ADDR,
		.end	= MX31_CS4_BASE_ADDR + 0xffff,
		.flags	= IORESOURCE_MEM,
	},
	{
		/* irq number is run-time assigned */
		.flags	= IORESOURCE_IRQ | IRQF_TRIGGER_FALLING,
	}
};

static struct smsc911x_platform_config smsc911x_config = {
	.phy_interface	= PHY_INTERFACE_MODE_MII,
	.irq_polarity	= SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
	.irq_type	= SMSC911X_IRQ_TYPE_OPEN_DRAIN,
	.flags		= SMSC911X_USE_32BIT |
			  SMSC911X_SAVE_MAC_ADDRESS |
			  SMSC911X_FORCE_INTERNAL_PHY,
};

static struct platform_device smsc91x_device = {
	.name		= "smsc911x",
	.id		= -1,
	.num_resources	= ARRAY_SIZE(smsc91x_resources),
	.resource	= smsc91x_resources,
	.dev		= {
		.platform_data = &smsc911x_config,
	}
};

/* NOR flash */
static struct physmap_flash_data nor_flash_data = {
	.width  = 2,
};

static struct resource nor_flash_resource = {
	.start	= 0xa0000000,
	.end	= 0xa1ffffff,
	.flags	= IORESOURCE_MEM,
};

static struct platform_device physmap_flash_device = {
	.name	= "physmap-flash",
	.id	= 0,
	.dev	= {
		.platform_data  = &nor_flash_data,
	},
	.resource = &nor_flash_resource,
	.num_resources = 1,
};

/* USB */

#define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
			PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)

static int usbh1_init(struct platform_device *pdev)
{
	int pins[] = {
		MX31_PIN_CSPI1_MOSI__USBH1_RXDM,
		MX31_PIN_CSPI1_MISO__USBH1_RXDP,
		MX31_PIN_CSPI1_SS0__USBH1_TXDM,
		MX31_PIN_CSPI1_SS1__USBH1_TXDP,
		MX31_PIN_CSPI1_SS2__USBH1_RCV,
		MX31_PIN_CSPI1_SCLK__USBH1_OEB,
		MX31_PIN_CSPI1_SPI_RDY__USBH1_FS,
	};

	mxc_iomux_setup_multiple_pins(pins, ARRAY_SIZE(pins), "USB H1");

	mxc_iomux_set_pad(MX31_PIN_CSPI1_MOSI, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_CSPI1_MISO, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_CSPI1_SS0, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_CSPI1_SS1, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_CSPI1_SS2, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_CSPI1_SCLK, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_CSPI1_SPI_RDY, USB_PAD_CFG);

	mxc_iomux_set_gpr(MUX_PGP_USB_SUSPEND, true);

	mdelay(10);

	return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED |
			MXC_EHCI_INTERFACE_SINGLE_UNI);
}

static int usbh2_init(struct platform_device *pdev)
{
	int pins[] = {
		MX31_PIN_USBH2_DATA0__USBH2_DATA0,
		MX31_PIN_USBH2_DATA1__USBH2_DATA1,
		MX31_PIN_USBH2_CLK__USBH2_CLK,
		MX31_PIN_USBH2_DIR__USBH2_DIR,
		MX31_PIN_USBH2_NXT__USBH2_NXT,
		MX31_PIN_USBH2_STP__USBH2_STP,
	};

	mxc_iomux_setup_multiple_pins(pins, ARRAY_SIZE(pins), "USB H2");

	mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_SRXD6, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_STXD6, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_SFS3, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_SCK3, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_SRXD3, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_STXD3, USB_PAD_CFG);

	mxc_iomux_set_gpr(MUX_PGP_UH2, true);

	/* chip select */
	mxc_iomux_alloc_pin(IOMUX_MODE(MX31_PIN_DTR_DCE1, IOMUX_CONFIG_GPIO),
				"USBH2_CS");
	gpio_request(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), "USBH2 CS");
	gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), 0);

	mdelay(10);

	return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
}

static const struct mxc_usbh_platform_data usbh1_pdata __initconst = {
	.init	= usbh1_init,
	.portsc	= MXC_EHCI_MODE_UTMI | MXC_EHCI_SERIAL,
};

static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
	.init	= usbh2_init,
	.portsc	= MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
};

static void __init lilly1131_usb_init(void)
{
	imx31_add_mxc_ehci_hs(1, &usbh1_pdata);

	usbh2_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
			ULPI_OTG_DRVVBUS_EXT);
	if (usbh2_pdata.otg)
		imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
}

/* SPI */

static const struct spi_imx_master spi0_pdata __initconst = {
	.num_chipselect = 3,
};

static const struct spi_imx_master spi1_pdata __initconst = {
	.num_chipselect = 3,
};

static struct mc13xxx_platform_data mc13783_pdata __initdata = {
	.flags = MC13XXX_USE_RTC | MC13XXX_USE_TOUCHSCREEN,
};

static struct spi_board_info mc13783_dev __initdata = {
	.modalias	= "mc13783",
	.max_speed_hz	= 1000000,
	.bus_num	= 1,
	.chip_select	= 0,
	.platform_data	= &mc13783_pdata,
	/* irq number is run-time assigned */
};

static struct platform_device *devices[] __initdata = {
	&smsc91x_device,
	&physmap_flash_device,
};

static int mx31lilly_baseboard;
core_param(mx31lilly_baseboard, mx31lilly_baseboard, int, 0444);

static struct regulator_consumer_supply dummy_supplies[] = {
	REGULATOR_SUPPLY("vdd33a", "smsc911x"),
	REGULATOR_SUPPLY("vddvario", "smsc911x"),
};

static void __init mx31lilly_board_init(void)
{
	imx31_soc_init();

	mxc_iomux_setup_multiple_pins(mx31lilly_pins,
				      ARRAY_SIZE(mx31lilly_pins), "mx31lily");

	imx31_add_imx_uart0(&uart_pdata);
	imx31_add_imx_uart1(&uart_pdata);
	imx31_add_imx_uart2(&uart_pdata);

	mxc_iomux_alloc_pin(MX31_PIN_CS4__CS4, "Ethernet CS");

	/* SPI */
	mxc_iomux_alloc_pin(MX31_PIN_CSPI1_SCLK__SCLK, "SPI1_CLK");
	mxc_iomux_alloc_pin(MX31_PIN_CSPI1_MOSI__MOSI, "SPI1_TX");
	mxc_iomux_alloc_pin(MX31_PIN_CSPI1_MISO__MISO, "SPI1_RX");
	mxc_iomux_alloc_pin(MX31_PIN_CSPI1_SPI_RDY__SPI_RDY, "SPI1_RDY");
	mxc_iomux_alloc_pin(MX31_PIN_CSPI1_SS0__SS0, "SPI1_SS0");
	mxc_iomux_alloc_pin(MX31_PIN_CSPI1_SS1__SS1, "SPI1_SS1");
	mxc_iomux_alloc_pin(MX31_PIN_CSPI1_SS2__SS2, "SPI1_SS2");

	mxc_iomux_alloc_pin(MX31_PIN_CSPI2_SCLK__SCLK, "SPI2_CLK");
	mxc_iomux_alloc_pin(MX31_PIN_CSPI2_MOSI__MOSI, "SPI2_TX");
	mxc_iomux_alloc_pin(MX31_PIN_CSPI2_MISO__MISO, "SPI2_RX");
	mxc_iomux_alloc_pin(MX31_PIN_CSPI2_SPI_RDY__SPI_RDY, "SPI2_RDY");
	mxc_iomux_alloc_pin(MX31_PIN_CSPI2_SS0__SS0, "SPI2_SS0");
	mxc_iomux_alloc_pin(MX31_PIN_CSPI2_SS1__SS1, "SPI2_SS1");
	mxc_iomux_alloc_pin(MX31_PIN_CSPI2_SS2__SS2, "SPI2_SS2");

	imx31_add_spi_imx0(&spi0_pdata);
	imx31_add_spi_imx1(&spi1_pdata);

	regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
}

static void __init mx31lilly_late_init(void)
{
	if (mx31lilly_baseboard == MX31LILLY_DB)
		mx31lilly_db_init();

	mc13783_dev.irq = gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
	spi_register_board_info(&mc13783_dev, 1);

	smsc91x_resources[1].start =
			gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_0));
	smsc91x_resources[1].end =
			gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_0));
	platform_add_devices(devices, ARRAY_SIZE(devices));

	/* USB */
	lilly1131_usb_init();
}

static void __init mx31lilly_timer_init(void)
{
	mx31_clocks_init(26000000);
}

MACHINE_START(LILLY1131, "INCO startec LILLY-1131")
	.atag_offset = 0x100,
	.map_io = mx31_map_io,
	.init_early = imx31_init_early,
	.init_irq = mx31_init_irq,
	.init_time	= mx31lilly_timer_init,
	.init_machine	= mx31lilly_board_init,
	.init_late	= mx31lilly_late_init,
	.restart	= mxc_restart,
MACHINE_END