Linux 5.7.7

[linux/fpc-iii.git] / arch / arm / mach-imx / mach-pcm037.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Copyright (C) 2008 Sascha Hauer, Pengutronix
 */

#include <linux/types.h>
#include <linux/init.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/plat-ram.h>
#include <linux/memory.h>
#include <linux/gpio.h>
#include <linux/smsc911x.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/property.h>
#include <linux/delay.h>
#include <linux/spi/spi.h>
#include <linux/irq.h>
#include <linux/can/platform/sja1000.h>
#include <linux/usb/otg.h>
#include <linux/usb/ulpi.h>
#include <linux/gfp.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 "common.h"
#include "devices-imx31.h"
#include "ehci.h"
#include "hardware.h"
#include "iomux-mx3.h"
#include "pcm037.h"
#include "ulpi.h"

static enum pcm037_board_variant pcm037_instance = PCM037_PCM970;

static int __init pcm037_variant_setup(char *str)
{
        if (!strcmp("eet", str))
                pcm037_instance = PCM037_EET;
        else if (strcmp("pcm970", str))
                pr_warn("Unknown pcm037 baseboard variant %s\n", str);

        return 1;
}

/* Supported values: "pcm970" (default) and "eet" */
__setup("pcm037_variant=", pcm037_variant_setup);

enum pcm037_board_variant pcm037_variant(void)
{
        return pcm037_instance;
}

/* UART1 with RTS/CTS handshake signals */
static unsigned int pcm037_uart1_handshake_pins[] = {
        MX31_PIN_CTS1__CTS1,
        MX31_PIN_RTS1__RTS1,
        MX31_PIN_TXD1__TXD1,
        MX31_PIN_RXD1__RXD1,
};

/* UART1 without RTS/CTS handshake signals */
static unsigned int pcm037_uart1_pins[] = {
        MX31_PIN_TXD1__TXD1,
        MX31_PIN_RXD1__RXD1,
};

static unsigned int pcm037_pins[] = {
        /* I2C */
        MX31_PIN_CSPI2_MOSI__SCL,
        MX31_PIN_CSPI2_MISO__SDA,
        MX31_PIN_CSPI2_SS2__I2C3_SDA,
        MX31_PIN_CSPI2_SCLK__I2C3_SCL,
        /* SDHC1 */
        MX31_PIN_SD1_DATA3__SD1_DATA3,
        MX31_PIN_SD1_DATA2__SD1_DATA2,
        MX31_PIN_SD1_DATA1__SD1_DATA1,
        MX31_PIN_SD1_DATA0__SD1_DATA0,
        MX31_PIN_SD1_CLK__SD1_CLK,
        MX31_PIN_SD1_CMD__SD1_CMD,
        IOMUX_MODE(MX31_PIN_SCK6, IOMUX_CONFIG_GPIO), /* card detect */
        IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO), /* write protect */
        /* SPI1 */
        MX31_PIN_CSPI1_MOSI__MOSI,
        MX31_PIN_CSPI1_MISO__MISO,
        MX31_PIN_CSPI1_SCLK__SCLK,
        MX31_PIN_CSPI1_SPI_RDY__SPI_RDY,
        MX31_PIN_CSPI1_SS0__SS0,
        MX31_PIN_CSPI1_SS1__SS1,
        MX31_PIN_CSPI1_SS2__SS2,
        /* UART2 */
        MX31_PIN_TXD2__TXD2,
        MX31_PIN_RXD2__RXD2,
        MX31_PIN_CTS2__CTS2,
        MX31_PIN_RTS2__RTS2,
        /* UART3 */
        MX31_PIN_CSPI3_MOSI__RXD3,
        MX31_PIN_CSPI3_MISO__TXD3,
        MX31_PIN_CSPI3_SCLK__RTS3,
        MX31_PIN_CSPI3_SPI_RDY__CTS3,
        /* LAN9217 irq pin */
        IOMUX_MODE(MX31_PIN_GPIO3_1, IOMUX_CONFIG_GPIO),
        /* Onewire */
        MX31_PIN_BATT_LINE__OWIRE,
        /* Framebuffer */
        MX31_PIN_LD0__LD0,
        MX31_PIN_LD1__LD1,
        MX31_PIN_LD2__LD2,
        MX31_PIN_LD3__LD3,
        MX31_PIN_LD4__LD4,
        MX31_PIN_LD5__LD5,
        MX31_PIN_LD6__LD6,
        MX31_PIN_LD7__LD7,
        MX31_PIN_LD8__LD8,
        MX31_PIN_LD9__LD9,
        MX31_PIN_LD10__LD10,
        MX31_PIN_LD11__LD11,
        MX31_PIN_LD12__LD12,
        MX31_PIN_LD13__LD13,
        MX31_PIN_LD14__LD14,
        MX31_PIN_LD15__LD15,
        MX31_PIN_LD16__LD16,
        MX31_PIN_LD17__LD17,
        MX31_PIN_VSYNC3__VSYNC3,
        MX31_PIN_HSYNC__HSYNC,
        MX31_PIN_FPSHIFT__FPSHIFT,
        MX31_PIN_DRDY0__DRDY0,
        MX31_PIN_D3_REV__D3_REV,
        MX31_PIN_CONTRAST__CONTRAST,
        MX31_PIN_D3_SPL__D3_SPL,
        MX31_PIN_D3_CLS__D3_CLS,
        MX31_PIN_LCS0__GPIO3_23,
        /* GPIO */
        IOMUX_MODE(MX31_PIN_ATA_DMACK, IOMUX_CONFIG_GPIO),
        /* OTG */
        MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
        MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
        MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
        MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
        MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
        MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
        MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
        MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
        MX31_PIN_USBOTG_CLK__USBOTG_CLK,
        MX31_PIN_USBOTG_DIR__USBOTG_DIR,
        MX31_PIN_USBOTG_NXT__USBOTG_NXT,
        MX31_PIN_USBOTG_STP__USBOTG_STP,
        /* USB host 2 */
        IOMUX_MODE(MX31_PIN_USBH2_CLK, IOMUX_CONFIG_FUNC),
        IOMUX_MODE(MX31_PIN_USBH2_DIR, IOMUX_CONFIG_FUNC),
        IOMUX_MODE(MX31_PIN_USBH2_NXT, IOMUX_CONFIG_FUNC),
        IOMUX_MODE(MX31_PIN_USBH2_STP, IOMUX_CONFIG_FUNC),
        IOMUX_MODE(MX31_PIN_USBH2_DATA0, IOMUX_CONFIG_FUNC),
        IOMUX_MODE(MX31_PIN_USBH2_DATA1, IOMUX_CONFIG_FUNC),
        IOMUX_MODE(MX31_PIN_STXD3, IOMUX_CONFIG_FUNC),
        IOMUX_MODE(MX31_PIN_SRXD3, IOMUX_CONFIG_FUNC),
        IOMUX_MODE(MX31_PIN_SCK3, IOMUX_CONFIG_FUNC),
        IOMUX_MODE(MX31_PIN_SFS3, IOMUX_CONFIG_FUNC),
        IOMUX_MODE(MX31_PIN_STXD6, IOMUX_CONFIG_FUNC),
        IOMUX_MODE(MX31_PIN_SRXD6, IOMUX_CONFIG_FUNC),
};

static struct physmap_flash_data pcm037_flash_data = {
        .width  = 2,
};

static struct resource pcm037_flash_resource = {
        .start  = 0xa0000000,
        .end    = 0xa1ffffff,
        .flags  = IORESOURCE_MEM,
};

static struct platform_device pcm037_flash = {
        .name   = "physmap-flash",
        .id     = 0,
        .dev    = {
                .platform_data  = &pcm037_flash_data,
        },
        .resource = &pcm037_flash_resource,
        .num_resources = 1,
};

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

static struct resource smsc911x_resources[] = {
        {
                .start          = MX31_CS1_BASE_ADDR + 0x300,
                .end            = MX31_CS1_BASE_ADDR + 0x300 + SZ_64K - 1,
                .flags          = IORESOURCE_MEM,
        }, {
                /* irq number is run-time assigned */
                .flags          = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
        },
};

static struct smsc911x_platform_config smsc911x_info = {
        .flags          = SMSC911X_USE_32BIT | SMSC911X_FORCE_INTERNAL_PHY |
                          SMSC911X_SAVE_MAC_ADDRESS,
        .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
        .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
        .phy_interface  = PHY_INTERFACE_MODE_MII,
};

static struct platform_device pcm037_eth = {
        .name           = "smsc911x",
        .id             = -1,
        .num_resources  = ARRAY_SIZE(smsc911x_resources),
        .resource       = smsc911x_resources,
        .dev            = {
                .platform_data = &smsc911x_info,
        },
};

static struct platdata_mtd_ram pcm038_sram_data = {
        .bankwidth = 2,
};

static struct resource pcm038_sram_resource = {
        .start = MX31_CS4_BASE_ADDR,
        .end   = MX31_CS4_BASE_ADDR + 512 * 1024 - 1,
        .flags = IORESOURCE_MEM,
};

static struct platform_device pcm037_sram_device = {
        .name = "mtd-ram",
        .id = 0,
        .dev = {
                .platform_data = &pcm038_sram_data,
        },
        .num_resources = 1,
        .resource = &pcm038_sram_resource,
};

static const struct mxc_nand_platform_data
pcm037_nand_board_info __initconst = {
        .width = 1,
        .hw_ecc = 1,
};

static const struct imxi2c_platform_data pcm037_i2c1_data __initconst = {
        .bitrate = 100000,
};

static const struct imxi2c_platform_data pcm037_i2c2_data __initconst = {
        .bitrate = 20000,
};

static const struct property_entry board_eeprom_properties[] = {
        PROPERTY_ENTRY_U32("pagesize", 32),
        { }
};

static struct i2c_board_info pcm037_i2c_devices[] = {
        {
                I2C_BOARD_INFO("24c32", 0x52), /* E0=0, E1=1, E2=0 */
                .properties = board_eeprom_properties,
        }, {
                I2C_BOARD_INFO("pcf8563", 0x51),
        }
};

/* Not connected by default */
#ifdef PCM970_SDHC_RW_SWITCH
static int pcm970_sdhc1_get_ro(struct device *dev)
{
        return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_SFS6));
}
#endif

#define SDHC1_GPIO_WP   IOMUX_TO_GPIO(MX31_PIN_SFS6)
#define SDHC1_GPIO_DET  IOMUX_TO_GPIO(MX31_PIN_SCK6)

static int pcm970_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
                void *data)
{
        int ret;

        ret = gpio_request(SDHC1_GPIO_DET, "sdhc-detect");
        if (ret)
                return ret;

        gpio_direction_input(SDHC1_GPIO_DET);

#ifdef PCM970_SDHC_RW_SWITCH
        ret = gpio_request(SDHC1_GPIO_WP, "sdhc-wp");
        if (ret)
                goto err_gpio_free;
        gpio_direction_input(SDHC1_GPIO_WP);
#endif

        ret = request_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SCK6)), detect_irq,
                        IRQF_TRIGGER_FALLING, "sdhc-detect", data);
        if (ret)
                goto err_gpio_free_2;

        return 0;

err_gpio_free_2:
#ifdef PCM970_SDHC_RW_SWITCH
        gpio_free(SDHC1_GPIO_WP);
err_gpio_free:
#endif
        gpio_free(SDHC1_GPIO_DET);

        return ret;
}

static void pcm970_sdhc1_exit(struct device *dev, void *data)
{
        free_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SCK6)), data);
        gpio_free(SDHC1_GPIO_DET);
        gpio_free(SDHC1_GPIO_WP);
}

static const struct imxmmc_platform_data sdhc_pdata __initconst = {
#ifdef PCM970_SDHC_RW_SWITCH
        .get_ro = pcm970_sdhc1_get_ro,
#endif
        .init = pcm970_sdhc1_init,
        .exit = pcm970_sdhc1_exit,
};

static struct platform_device *devices[] __initdata = {
        &pcm037_flash,
        &pcm037_sram_device,
};

static const struct fb_videomode fb_modedb[] = {
        {
                /* 240x320 @ 60 Hz Sharp */
                .name           = "Sharp-LQ035Q7DH06-QVGA",
                .refresh        = 60,
                .xres           = 240,
                .yres           = 320,
                .pixclock       = 185925,
                .left_margin    = 9,
                .right_margin   = 16,
                .upper_margin   = 7,
                .lower_margin   = 9,
                .hsync_len      = 1,
                .vsync_len      = 1,
                .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_SHARP_MODE |
                                  FB_SYNC_CLK_INVERT | FB_SYNC_CLK_IDLE_EN,
                .vmode          = FB_VMODE_NONINTERLACED,
                .flag           = 0,
        }, {
                /* 240x320 @ 60 Hz */
                .name           = "TX090",
                .refresh        = 60,
                .xres           = 240,
                .yres           = 320,
                .pixclock       = 38255,
                .left_margin    = 144,
                .right_margin   = 0,
                .upper_margin   = 7,
                .lower_margin   = 40,
                .hsync_len      = 96,
                .vsync_len      = 1,
                .sync           = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_OE_ACT_HIGH,
                .vmode          = FB_VMODE_NONINTERLACED,
                .flag           = 0,
        }, {
                /* 240x320 @ 60 Hz */
                .name           = "CMEL-OLED",
                .refresh        = 60,
                .xres           = 240,
                .yres           = 320,
                .pixclock       = 185925,
                .left_margin    = 9,
                .right_margin   = 16,
                .upper_margin   = 7,
                .lower_margin   = 9,
                .hsync_len      = 1,
                .vsync_len      = 1,
                .sync           = FB_SYNC_OE_ACT_HIGH | FB_SYNC_CLK_INVERT,
                .vmode          = FB_VMODE_NONINTERLACED,
                .flag           = 0,
        },
};

static struct mx3fb_platform_data mx3fb_pdata = {
        .name           = "Sharp-LQ035Q7DH06-QVGA",
        .mode           = fb_modedb,
        .num_modes      = ARRAY_SIZE(fb_modedb),
};

static struct resource pcm970_sja1000_resources[] = {
        {
                .start   = MX31_CS5_BASE_ADDR,
                .end     = MX31_CS5_BASE_ADDR + 0x100 - 1,
                .flags   = IORESOURCE_MEM,
        }, {
                /* irq number is run-time assigned */
                .flags   = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
        },
};

struct sja1000_platform_data pcm970_sja1000_platform_data = {
        .osc_freq       = 16000000,
        .ocr            = OCR_TX1_PULLDOWN | OCR_TX0_PUSHPULL,
        .cdr            = CDR_CBP,
};

static struct platform_device pcm970_sja1000 = {
        .name = "sja1000_platform",
        .dev = {
                .platform_data = &pcm970_sja1000_platform_data,
        },
        .resource = pcm970_sja1000_resources,
        .num_resources = ARRAY_SIZE(pcm970_sja1000_resources),
};

static int pcm037_otg_init(struct platform_device *pdev)
{
        return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
}

static struct mxc_usbh_platform_data otg_pdata __initdata = {
        .init   = pcm037_otg_init,
        .portsc = MXC_EHCI_MODE_ULPI,
};

static int pcm037_usbh2_init(struct platform_device *pdev)
{
        return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
}

static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
        .init   = pcm037_usbh2_init,
        .portsc = MXC_EHCI_MODE_ULPI,
};

static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
        .operating_mode = FSL_USB2_DR_DEVICE,
        .phy_mode       = FSL_USB2_PHY_ULPI,
};

static bool otg_mode_host __initdata;

static int __init pcm037_otg_mode(char *options)
{
        if (!strcmp(options, "host"))
                otg_mode_host = true;
        else if (!strcmp(options, "device"))
                otg_mode_host = false;
        else
                pr_info("otg_mode neither \"host\" nor \"device\". "
                        "Defaulting to device\n");
        return 1;
}
__setup("otg_mode=", pcm037_otg_mode);

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

/*
 * Board specific initialization.
 */
static void __init pcm037_init(void)
{
        imx31_soc_init();

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

        mxc_iomux_set_gpr(MUX_PGP_UH2, 1);

        mxc_iomux_setup_multiple_pins(pcm037_pins, ARRAY_SIZE(pcm037_pins),
                        "pcm037");

#define H2_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS \
                | PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)

        mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, H2_PAD_CFG);
        mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, H2_PAD_CFG);
        mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, H2_PAD_CFG);
        mxc_iomux_set_pad(MX31_PIN_USBH2_STP, H2_PAD_CFG);
        mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, H2_PAD_CFG); /* USBH2_DATA0 */
        mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, H2_PAD_CFG); /* USBH2_DATA1 */
        mxc_iomux_set_pad(MX31_PIN_SRXD6, H2_PAD_CFG);  /* USBH2_DATA2 */
        mxc_iomux_set_pad(MX31_PIN_STXD6, H2_PAD_CFG);  /* USBH2_DATA3 */
        mxc_iomux_set_pad(MX31_PIN_SFS3, H2_PAD_CFG);   /* USBH2_DATA4 */
        mxc_iomux_set_pad(MX31_PIN_SCK3, H2_PAD_CFG);   /* USBH2_DATA5 */
        mxc_iomux_set_pad(MX31_PIN_SRXD3, H2_PAD_CFG);  /* USBH2_DATA6 */
        mxc_iomux_set_pad(MX31_PIN_STXD3, H2_PAD_CFG);  /* USBH2_DATA7 */

        if (pcm037_variant() == PCM037_EET)
                mxc_iomux_setup_multiple_pins(pcm037_uart1_pins,
                        ARRAY_SIZE(pcm037_uart1_pins), "pcm037_uart1");
        else
                mxc_iomux_setup_multiple_pins(pcm037_uart1_handshake_pins,
                        ARRAY_SIZE(pcm037_uart1_handshake_pins),
                        "pcm037_uart1");

        platform_add_devices(devices, ARRAY_SIZE(devices));

        imx31_add_imx2_wdt();
        imx31_add_imx_uart0(&uart_pdata);
        /* XXX: should't this have .flags = 0 (i.e. no RTSCTS) on PCM037_EET? */
        imx31_add_imx_uart1(&uart_pdata);
        imx31_add_imx_uart2(&uart_pdata);

        imx31_add_mxc_w1();

        /* I2C adapters and devices */
        i2c_register_board_info(1, pcm037_i2c_devices,
                        ARRAY_SIZE(pcm037_i2c_devices));

        imx31_add_imx_i2c1(&pcm037_i2c1_data);
        imx31_add_imx_i2c2(&pcm037_i2c2_data);

        imx31_add_mxc_nand(&pcm037_nand_board_info);
        imx31_add_ipu_core();
        imx31_add_mx3_sdc_fb(&mx3fb_pdata);

        if (otg_mode_host) {
                otg_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
                                ULPI_OTG_DRVVBUS_EXT);
                if (otg_pdata.otg)
                        imx31_add_mxc_ehci_otg(&otg_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);

        if (!otg_mode_host)
                imx31_add_fsl_usb2_udc(&otg_device_pdata);
}

static void __init pcm037_timer_init(void)
{
        mx31_clocks_init(26000000);
}

static void __init pcm037_init_late(void)
{
        int ret;

        /* LAN9217 IRQ pin */
        ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO3_1), "lan9217-irq");
        if (!ret) {
                gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO3_1));
                smsc911x_resources[1].start =
                        gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO3_1));
                smsc911x_resources[1].end =
                        gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO3_1));
                platform_device_register(&pcm037_eth);
        } else {
                pr_warn("could not get LAN irq gpio\n");
        }

        imx31_add_mxc_mmc(0, &sdhc_pdata);

        pcm970_sja1000_resources[1].start =
                        gpio_to_irq(IOMUX_TO_GPIO(IOMUX_PIN(48, 105)));
        pcm970_sja1000_resources[1].end =
                        gpio_to_irq(IOMUX_TO_GPIO(IOMUX_PIN(48, 105)));
        platform_device_register(&pcm970_sja1000);

        pcm037_eet_init_devices();
}

MACHINE_START(PCM037, "Phytec Phycore pcm037")
        /* Maintainer: Pengutronix */
        .atag_offset = 0x100,
        .map_io = mx31_map_io,
        .init_early = imx31_init_early,
        .init_irq = mx31_init_irq,
        .init_time      = pcm037_timer_init,
        .init_machine = pcm037_init,
        .init_late = pcm037_init_late,
        .restart        = mxc_restart,
MACHINE_END