/* * Copyright 2004-20010 Analog Devices Inc. * 2005 National ICT Australia (NICTA) * Aidan Williams <aidan@nicta.com.au> * * Licensed under the GPL-2 or later. */ #include <linux/device.h> #include <linux/export.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/spi/flash.h> #include <linux/i2c.h> #include <linux/irq.h> #include <linux/interrupt.h> #include <linux/usb/musb.h> #include <linux/leds.h> #include <linux/input.h> #include <asm/dma.h> #include <asm/bfin5xx_spi.h> #include <asm/reboot.h> #include <asm/nand.h> #include <asm/portmux.h> #include <asm/dpmc.h> /* * Name the Board for the /proc/cpuinfo */ const char bfin_board_name[] = "ADI BF527-AD7160EVAL"; /* * Driver needs to know address, irq and flag pin. */ #if IS_ENABLED(CONFIG_USB_MUSB_HDRC) static struct resource musb_resources[] = { [0] = { .start = 0xffc03800, .end = 0xffc03cff, .flags = IORESOURCE_MEM, }, [1] = { /* general IRQ */ .start = IRQ_USB_INT0, .end = IRQ_USB_INT0, .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL, }, [2] = { /* DMA IRQ */ .start = IRQ_USB_DMA, .end = IRQ_USB_DMA, .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL, }, }; static struct musb_hdrc_config musb_config = { .multipoint = 0, .dyn_fifo = 0, .soft_con = 1, .dma = 1, .num_eps = 8, .dma_channels = 8, .gpio_vrsel = GPIO_PG13, /* Some custom boards need to be active low, just set it to "0" * if it is the case. */ .gpio_vrsel_active = 1, .clkin = 24, /* musb CLKIN in MHZ */ }; static struct musb_hdrc_platform_data musb_plat = { #if defined(CONFIG_USB_MUSB_OTG) .mode = MUSB_OTG, #elif defined(CONFIG_USB_MUSB_HDRC_HCD) .mode = MUSB_HOST, #elif defined(CONFIG_USB_GADGET_MUSB_HDRC) .mode = MUSB_PERIPHERAL, #endif .config = &musb_config, }; static u64 musb_dmamask = ~(u32)0; static struct platform_device musb_device = { .name = "musb-blackfin", .id = 0, .dev = { .dma_mask = &musb_dmamask, .coherent_dma_mask = 0xffffffff, .platform_data = &musb_plat, }, .num_resources = ARRAY_SIZE(musb_resources), .resource = musb_resources, }; #endif #if IS_ENABLED(CONFIG_FB_BFIN_RA158Z) static struct resource bf52x_ra158z_resources[] = { { .start = IRQ_PPI_ERROR, .end = IRQ_PPI_ERROR, .flags = IORESOURCE_IRQ, }, }; static struct platform_device bf52x_ra158z_device = { .name = "bfin-ra158z", .id = -1, .num_resources = ARRAY_SIZE(bf52x_ra158z_resources), .resource = bf52x_ra158z_resources, }; #endif #if IS_ENABLED(CONFIG_MTD_PHYSMAP) static struct mtd_partition ad7160eval_partitions[] = { { .name = "bootloader(nor)", .size = 0x40000, .offset = 0, }, { .name = "linux kernel(nor)", .size = 0x1C0000, .offset = MTDPART_OFS_APPEND, }, { .name = "file system(nor)", .size = MTDPART_SIZ_FULL, .offset = MTDPART_OFS_APPEND, } }; static struct physmap_flash_data ad7160eval_flash_data = { .width = 2, .parts = ad7160eval_partitions, .nr_parts = ARRAY_SIZE(ad7160eval_partitions), }; static struct resource ad7160eval_flash_resource = { .start = 0x20000000, .end = 0x203fffff, .flags = IORESOURCE_MEM, }; static struct platform_device ad7160eval_flash_device = { .name = "physmap-flash", .id = 0, .dev = { .platform_data = &ad7160eval_flash_data, }, .num_resources = 1, .resource = &ad7160eval_flash_resource, }; #endif #if IS_ENABLED(CONFIG_MTD_NAND_BF5XX) static struct mtd_partition partition_info[] = { { .name = "linux kernel(nand)", .offset = 0, .size = 4 * 1024 * 1024, }, { .name = "file system(nand)", .offset = MTDPART_OFS_APPEND, .size = MTDPART_SIZ_FULL, }, }; static struct bf5xx_nand_platform bf5xx_nand_platform = { .data_width = NFC_NWIDTH_8, .partitions = partition_info, .nr_partitions = ARRAY_SIZE(partition_info), .rd_dly = 3, .wr_dly = 3, }; static struct resource bf5xx_nand_resources[] = { { .start = NFC_CTL, .end = NFC_DATA_RD + 2, .flags = IORESOURCE_MEM, }, { .start = CH_NFC, .end = CH_NFC, .flags = IORESOURCE_IRQ, }, }; static struct platform_device bf5xx_nand_device = { .name = "bf5xx-nand", .id = 0, .num_resources = ARRAY_SIZE(bf5xx_nand_resources), .resource = bf5xx_nand_resources, .dev = { .platform_data = &bf5xx_nand_platform, }, }; #endif #if IS_ENABLED(CONFIG_RTC_DRV_BFIN) static struct platform_device rtc_device = { .name = "rtc-bfin", .id = -1, }; #endif #if IS_ENABLED(CONFIG_BFIN_MAC) #include <linux/bfin_mac.h> static const unsigned short bfin_mac_peripherals[] = P_RMII0; static struct bfin_phydev_platform_data bfin_phydev_data[] = { { .addr = 1, .irq = IRQ_MAC_PHYINT, }, }; static struct bfin_mii_bus_platform_data bfin_mii_bus_data = { .phydev_number = 1, .phydev_data = bfin_phydev_data, .phy_mode = PHY_INTERFACE_MODE_RMII, .mac_peripherals = bfin_mac_peripherals, }; static struct platform_device bfin_mii_bus = { .name = "bfin_mii_bus", .dev = { .platform_data = &bfin_mii_bus_data, } }; static struct platform_device bfin_mac_device = { .name = "bfin_mac", .dev = { .platform_data = &bfin_mii_bus, } }; #endif #if IS_ENABLED(CONFIG_MTD_M25P80) static struct mtd_partition bfin_spi_flash_partitions[] = { { .name = "bootloader(spi)", .size = 0x00040000, .offset = 0, .mask_flags = MTD_CAP_ROM }, { .name = "linux kernel(spi)", .size = MTDPART_SIZ_FULL, .offset = MTDPART_OFS_APPEND, } }; static struct flash_platform_data bfin_spi_flash_data = { .name = "m25p80", .parts = bfin_spi_flash_partitions, .nr_parts = ARRAY_SIZE(bfin_spi_flash_partitions), .type = "m25p16", }; /* SPI flash chip (m25p64) */ static struct bfin5xx_spi_chip spi_flash_chip_info = { .enable_dma = 0, /* use dma transfer with this chip*/ }; #endif #if IS_ENABLED(CONFIG_MMC_SPI) static struct bfin5xx_spi_chip mmc_spi_chip_info = { .enable_dma = 0, }; #endif #if IS_ENABLED(CONFIG_SND_BF5XX_I2S) static struct platform_device bfin_i2s = { .name = "bfin-i2s", .id = CONFIG_SND_BF5XX_SPORT_NUM, /* TODO: add platform data here */ }; #endif static struct spi_board_info bfin_spi_board_info[] __initdata = { #if IS_ENABLED(CONFIG_MTD_M25P80) { /* the modalias must be the same as spi device driver name */ .modalias = "m25p80", /* Name of spi_driver for this device */ .max_speed_hz = 25000000, /* max spi clock (SCK) speed in HZ */ .bus_num = 0, /* Framework bus number */ .chip_select = 1, /* Framework chip select. On STAMP537 it is SPISSEL1*/ .platform_data = &bfin_spi_flash_data, .controller_data = &spi_flash_chip_info, .mode = SPI_MODE_3, }, #endif #if IS_ENABLED(CONFIG_SND_BF5XX_SOC_AD183X) { .modalias = "ad183x", .max_speed_hz = 3125000, /* max spi clock (SCK) speed in HZ */ .bus_num = 0, .chip_select = 4, }, #endif #if IS_ENABLED(CONFIG_MMC_SPI) { .modalias = "mmc_spi", .max_speed_hz = 30000000, /* max spi clock (SCK) speed in HZ */ .bus_num = 0, .chip_select = GPIO_PH3 + MAX_CTRL_CS, .controller_data = &mmc_spi_chip_info, .mode = SPI_MODE_3, }, #endif #if IS_ENABLED(CONFIG_SPI_SPIDEV) { .modalias = "spidev", .max_speed_hz = 3125000, /* max spi clock (SCK) speed in HZ */ .bus_num = 0, .chip_select = 1, }, #endif }; #if IS_ENABLED(CONFIG_SPI_BFIN5XX) /* SPI controller data */ static struct bfin5xx_spi_master bfin_spi0_info = { .num_chipselect = MAX_CTRL_CS + MAX_BLACKFIN_GPIOS, .enable_dma = 1, /* master has the ability to do dma transfer */ .pin_req = {P_SPI0_SCK, P_SPI0_MISO, P_SPI0_MOSI, 0}, }; /* SPI (0) */ static struct resource bfin_spi0_resource[] = { [0] = { .start = SPI0_REGBASE, .end = SPI0_REGBASE + 0xFF, .flags = IORESOURCE_MEM, }, [1] = { .start = CH_SPI, .end = CH_SPI, .flags = IORESOURCE_DMA, }, [2] = { .start = IRQ_SPI, .end = IRQ_SPI, .flags = IORESOURCE_IRQ, }, }; static struct platform_device bfin_spi0_device = { .name = "bfin-spi", .id = 0, /* Bus number */ .num_resources = ARRAY_SIZE(bfin_spi0_resource), .resource = bfin_spi0_resource, .dev = { .platform_data = &bfin_spi0_info, /* Passed to driver */ }, }; #endif /* spi master and devices */ #if IS_ENABLED(CONFIG_SERIAL_BFIN) #ifdef CONFIG_SERIAL_BFIN_UART0 static struct resource bfin_uart0_resources[] = { { .start = UART0_THR, .end = UART0_GCTL+2, .flags = IORESOURCE_MEM, }, { .start = IRQ_UART0_TX, .end = IRQ_UART0_TX, .flags = IORESOURCE_IRQ, }, { .start = IRQ_UART0_RX, .end = IRQ_UART0_RX, .flags = IORESOURCE_IRQ, }, { .start = IRQ_UART0_ERROR, .end = IRQ_UART0_ERROR, .flags = IORESOURCE_IRQ, }, { .start = CH_UART0_TX, .end = CH_UART0_TX, .flags = IORESOURCE_DMA, }, { .start = CH_UART0_RX, .end = CH_UART0_RX, .flags = IORESOURCE_DMA, }, }; static unsigned short bfin_uart0_peripherals[] = { P_UART0_TX, P_UART0_RX, 0 }; static struct platform_device bfin_uart0_device = { .name = "bfin-uart", .id = 0, .num_resources = ARRAY_SIZE(bfin_uart0_resources), .resource = bfin_uart0_resources, .dev = { .platform_data = &bfin_uart0_peripherals, /* Passed to driver */ }, }; #endif #ifdef CONFIG_SERIAL_BFIN_UART1 static struct resource bfin_uart1_resources[] = { { .start = UART1_THR, .end = UART1_GCTL+2, .flags = IORESOURCE_MEM, }, { .start = IRQ_UART1_TX, .end = IRQ_UART1_TX, .flags = IORESOURCE_IRQ, }, { .start = IRQ_UART1_RX, .end = IRQ_UART1_RX, .flags = IORESOURCE_IRQ, }, { .start = IRQ_UART1_ERROR, .end = IRQ_UART1_ERROR, .flags = IORESOURCE_IRQ, }, { .start = CH_UART1_TX, .end = CH_UART1_TX, .flags = IORESOURCE_DMA, }, { .start = CH_UART1_RX, .end = CH_UART1_RX, .flags = IORESOURCE_DMA, }, #ifdef CONFIG_BFIN_UART1_CTSRTS { /* CTS pin */ .start = GPIO_PF9, .end = GPIO_PF9, .flags = IORESOURCE_IO, }, { /* RTS pin */ .start = GPIO_PF10, .end = GPIO_PF10, .flags = IORESOURCE_IO, }, #endif }; static unsigned short bfin_uart1_peripherals[] = { P_UART1_TX, P_UART1_RX, 0 }; static struct platform_device bfin_uart1_device = { .name = "bfin-uart", .id = 1, .num_resources = ARRAY_SIZE(bfin_uart1_resources), .resource = bfin_uart1_resources, .dev = { .platform_data = &bfin_uart1_peripherals, /* Passed to driver */ }, }; #endif #endif #if IS_ENABLED(CONFIG_BFIN_SIR) #ifdef CONFIG_BFIN_SIR0 static struct resource bfin_sir0_resources[] = { { .start = 0xFFC00400, .end = 0xFFC004FF, .flags = IORESOURCE_MEM, }, { .start = IRQ_UART0_RX, .end = IRQ_UART0_RX+1, .flags = IORESOURCE_IRQ, }, { .start = CH_UART0_RX, .end = CH_UART0_RX+1, .flags = IORESOURCE_DMA, }, }; static struct platform_device bfin_sir0_device = { .name = "bfin_sir", .id = 0, .num_resources = ARRAY_SIZE(bfin_sir0_resources), .resource = bfin_sir0_resources, }; #endif #ifdef CONFIG_BFIN_SIR1 static struct resource bfin_sir1_resources[] = { { .start = 0xFFC02000, .end = 0xFFC020FF, .flags = IORESOURCE_MEM, }, { .start = IRQ_UART1_RX, .end = IRQ_UART1_RX+1, .flags = IORESOURCE_IRQ, }, { .start = CH_UART1_RX, .end = CH_UART1_RX+1, .flags = IORESOURCE_DMA, }, }; static struct platform_device bfin_sir1_device = { .name = "bfin_sir", .id = 1, .num_resources = ARRAY_SIZE(bfin_sir1_resources), .resource = bfin_sir1_resources, }; #endif #endif #if IS_ENABLED(CONFIG_TOUCHSCREEN_AD7160) #include <linux/input/ad7160.h> static const struct ad7160_platform_data bfin_ad7160_ts_info = { .sensor_x_res = 854, .sensor_y_res = 480, .pressure = 100, .filter_coef = 3, .coord_pref = AD7160_ORIG_TOP_LEFT, .first_touch_window = 5, .move_window = 3, .event_cabs = AD7160_EMIT_ABS_MT_TRACKING_ID | AD7160_EMIT_ABS_MT_PRESSURE | AD7160_TRACKING_ID_ASCENDING, .finger_act_ctrl = 0x64, .haptic_effect1_ctrl = AD7160_HAPTIC_SLOT_A(60) | AD7160_HAPTIC_SLOT_A_LVL_HIGH | AD7160_HAPTIC_SLOT_B(60) | AD7160_HAPTIC_SLOT_B_LVL_LOW, .haptic_effect2_ctrl = AD7160_HAPTIC_SLOT_A(20) | AD7160_HAPTIC_SLOT_A_LVL_HIGH | AD7160_HAPTIC_SLOT_B(80) | AD7160_HAPTIC_SLOT_B_LVL_LOW | AD7160_HAPTIC_SLOT_C(120) | AD7160_HAPTIC_SLOT_C_LVL_HIGH | AD7160_HAPTIC_SLOT_D(30) | AD7160_HAPTIC_SLOT_D_LVL_LOW, }; #endif #if IS_ENABLED(CONFIG_I2C_BLACKFIN_TWI) static const u16 bfin_twi0_pins[] = {P_TWI0_SCL, P_TWI0_SDA, 0}; static struct resource bfin_twi0_resource[] = { [0] = { .start = TWI0_REGBASE, .end = TWI0_REGBASE, .flags = IORESOURCE_MEM, }, [1] = { .start = IRQ_TWI, .end = IRQ_TWI, .flags = IORESOURCE_IRQ, }, }; static struct platform_device i2c_bfin_twi_device = { .name = "i2c-bfin-twi", .id = 0, .num_resources = ARRAY_SIZE(bfin_twi0_resource), .resource = bfin_twi0_resource, .dev = { .platform_data = &bfin_twi0_pins, }, }; #endif static struct i2c_board_info __initdata bfin_i2c_board_info[] = { #if IS_ENABLED(CONFIG_TOUCHSCREEN_AD7160) { I2C_BOARD_INFO("ad7160", 0x33), .irq = IRQ_PH1, .platform_data = (void *)&bfin_ad7160_ts_info, }, #endif }; #if IS_ENABLED(CONFIG_SERIAL_BFIN_SPORT) #ifdef CONFIG_SERIAL_BFIN_SPORT0_UART static struct resource bfin_sport0_uart_resources[] = { { .start = SPORT0_TCR1, .end = SPORT0_MRCS3+4, .flags = IORESOURCE_MEM, }, { .start = IRQ_SPORT0_RX, .end = IRQ_SPORT0_RX+1, .flags = IORESOURCE_IRQ, }, { .start = IRQ_SPORT0_ERROR, .end = IRQ_SPORT0_ERROR, .flags = IORESOURCE_IRQ, }, }; static unsigned short bfin_sport0_peripherals[] = { P_SPORT0_TFS, P_SPORT0_DTPRI, P_SPORT0_TSCLK, P_SPORT0_RFS, P_SPORT0_DRPRI, P_SPORT0_RSCLK, 0 }; static struct platform_device bfin_sport0_uart_device = { .name = "bfin-sport-uart", .id = 0, .num_resources = ARRAY_SIZE(bfin_sport0_uart_resources), .resource = bfin_sport0_uart_resources, .dev = { .platform_data = &bfin_sport0_peripherals, /* Passed to driver */ }, }; #endif #ifdef CONFIG_SERIAL_BFIN_SPORT1_UART static struct resource bfin_sport1_uart_resources[] = { { .start = SPORT1_TCR1, .end = SPORT1_MRCS3+4, .flags = IORESOURCE_MEM, }, { .start = IRQ_SPORT1_RX, .end = IRQ_SPORT1_RX+1, .flags = IORESOURCE_IRQ, }, { .start = IRQ_SPORT1_ERROR, .end = IRQ_SPORT1_ERROR, .flags = IORESOURCE_IRQ, }, }; static unsigned short bfin_sport1_peripherals[] = { P_SPORT1_TFS, P_SPORT1_DTPRI, P_SPORT1_TSCLK, P_SPORT1_RFS, P_SPORT1_DRPRI, P_SPORT1_RSCLK, 0 }; static struct platform_device bfin_sport1_uart_device = { .name = "bfin-sport-uart", .id = 1, .num_resources = ARRAY_SIZE(bfin_sport1_uart_resources), .resource = bfin_sport1_uart_resources, .dev = { .platform_data = &bfin_sport1_peripherals, /* Passed to driver */ }, }; #endif #endif #if IS_ENABLED(CONFIG_INPUT_BFIN_ROTARY) #include <linux/platform_data/bfin_rotary.h> static const u16 per_cnt[] = { P_CNT_CUD, P_CNT_CDG, P_CNT_CZM, 0 }; static struct bfin_rotary_platform_data bfin_rotary_data = { /*.rotary_up_key = KEY_UP,*/ /*.rotary_down_key = KEY_DOWN,*/ .rotary_rel_code = REL_WHEEL, .rotary_button_key = KEY_ENTER, .debounce = 10, /* 0..17 */ .mode = ROT_QUAD_ENC | ROT_DEBE, .pm_wakeup = 1, .pin_list = per_cnt, }; static struct resource bfin_rotary_resources[] = { { .start = CNT_CONFIG, .end = CNT_CONFIG + 0xff, .flags = IORESOURCE_MEM, }, { .start = IRQ_CNT, .end = IRQ_CNT, .flags = IORESOURCE_IRQ, }, }; static struct platform_device bfin_rotary_device = { .name = "bfin-rotary", .id = -1, .num_resources = ARRAY_SIZE(bfin_rotary_resources), .resource = bfin_rotary_resources, .dev = { .platform_data = &bfin_rotary_data, }, }; #endif static const unsigned int cclk_vlev_datasheet[] = { VRPAIR(VLEV_100, 400000000), VRPAIR(VLEV_105, 426000000), VRPAIR(VLEV_110, 500000000), VRPAIR(VLEV_115, 533000000), VRPAIR(VLEV_120, 600000000), }; static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = { .tuple_tab = cclk_vlev_datasheet, .tabsize = ARRAY_SIZE(cclk_vlev_datasheet), .vr_settling_time = 25 /* us */, }; static struct platform_device bfin_dpmc = { .name = "bfin dpmc", .dev = { .platform_data = &bfin_dmpc_vreg_data, }, }; static struct platform_device *stamp_devices[] __initdata = { &bfin_dpmc, #if IS_ENABLED(CONFIG_MTD_NAND_BF5XX) &bf5xx_nand_device, #endif #if IS_ENABLED(CONFIG_RTC_DRV_BFIN) &rtc_device, #endif #if IS_ENABLED(CONFIG_USB_MUSB_HDRC) &musb_device, #endif #if IS_ENABLED(CONFIG_BFIN_MAC) &bfin_mii_bus, &bfin_mac_device, #endif #if IS_ENABLED(CONFIG_SPI_BFIN5XX) &bfin_spi0_device, #endif #if IS_ENABLED(CONFIG_SERIAL_BFIN) #ifdef CONFIG_SERIAL_BFIN_UART0 &bfin_uart0_device, #endif #ifdef CONFIG_SERIAL_BFIN_UART1 &bfin_uart1_device, #endif #endif #if IS_ENABLED(CONFIG_FB_BFIN_RA158Z) &bf52x_ra158z_device, #endif #if IS_ENABLED(CONFIG_BFIN_SIR) #ifdef CONFIG_BFIN_SIR0 &bfin_sir0_device, #endif #ifdef CONFIG_BFIN_SIR1 &bfin_sir1_device, #endif #endif #if IS_ENABLED(CONFIG_I2C_BLACKFIN_TWI) &i2c_bfin_twi_device, #endif #if IS_ENABLED(CONFIG_SERIAL_BFIN_SPORT) #ifdef CONFIG_SERIAL_BFIN_SPORT0_UART &bfin_sport0_uart_device, #endif #ifdef CONFIG_SERIAL_BFIN_SPORT1_UART &bfin_sport1_uart_device, #endif #endif #if IS_ENABLED(CONFIG_INPUT_BFIN_ROTARY) &bfin_rotary_device, #endif #if IS_ENABLED(CONFIG_MTD_PHYSMAP) &ad7160eval_flash_device, #endif #if IS_ENABLED(CONFIG_SND_BF5XX_I2S) &bfin_i2s, #endif }; static int __init ad7160eval_init(void) { printk(KERN_INFO "%s(): registering device resources\n", __func__); i2c_register_board_info(0, bfin_i2c_board_info, ARRAY_SIZE(bfin_i2c_board_info)); platform_add_devices(stamp_devices, ARRAY_SIZE(stamp_devices)); spi_register_board_info(bfin_spi_board_info, ARRAY_SIZE(bfin_spi_board_info)); return 0; } arch_initcall(ad7160eval_init); static struct platform_device *ad7160eval_early_devices[] __initdata = { #if defined(CONFIG_SERIAL_BFIN_CONSOLE) || defined(CONFIG_EARLY_PRINTK) #ifdef CONFIG_SERIAL_BFIN_UART0 &bfin_uart0_device, #endif #ifdef CONFIG_SERIAL_BFIN_UART1 &bfin_uart1_device, #endif #endif #if defined(CONFIG_SERIAL_BFIN_SPORT_CONSOLE) #ifdef CONFIG_SERIAL_BFIN_SPORT0_UART &bfin_sport0_uart_device, #endif #ifdef CONFIG_SERIAL_BFIN_SPORT1_UART &bfin_sport1_uart_device, #endif #endif }; void __init native_machine_early_platform_add_devices(void) { printk(KERN_INFO "register early platform devices\n"); early_platform_add_devices(ad7160eval_early_devices, ARRAY_SIZE(ad7160eval_early_devices)); } void native_machine_restart(char *cmd) { /* workaround reboot hang when booting from SPI */ if ((bfin_read_SYSCR() & 0x7) == 0x3) bfin_reset_boot_spi_cs(P_DEFAULT_BOOT_SPI_CS); } int bfin_get_ether_addr(char *addr) { /* the MAC is stored in OTP memory page 0xDF */ u32 ret; u64 otp_mac; u32 (*otp_read)(u32 page, u32 flags, u64 *page_content) = (void *)0xEF00001A; ret = otp_read(0xDF, 0x00, &otp_mac); if (!(ret & 0x1)) { char *otp_mac_p = (char *)&otp_mac; for (ret = 0; ret < 6; ++ret) addr[ret] = otp_mac_p[5 - ret]; } return 0; } EXPORT_SYMBOL(bfin_get_ether_addr);