/* * Support for the Arcom ZEUS. * * Copyright (C) 2006 Arcom Control Systems Ltd. * * Loosely based on Arcom's 2.6.16.28. * Maintained by Marc Zyngier * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "generic.h" /* * Interrupt handling */ static unsigned long zeus_irq_enabled_mask; static const int zeus_isa_irqs[] = { 3, 4, 5, 6, 7, 10, 11, 12, }; static const int zeus_isa_irq_map[] = { 0, /* ISA irq #0, invalid */ 0, /* ISA irq #1, invalid */ 0, /* ISA irq #2, invalid */ 1 << 0, /* ISA irq #3 */ 1 << 1, /* ISA irq #4 */ 1 << 2, /* ISA irq #5 */ 1 << 3, /* ISA irq #6 */ 1 << 4, /* ISA irq #7 */ 0, /* ISA irq #8, invalid */ 0, /* ISA irq #9, invalid */ 1 << 5, /* ISA irq #10 */ 1 << 6, /* ISA irq #11 */ 1 << 7, /* ISA irq #12 */ }; static inline int zeus_irq_to_bitmask(unsigned int irq) { return zeus_isa_irq_map[irq - PXA_ISA_IRQ(0)]; } static inline int zeus_bit_to_irq(int bit) { return zeus_isa_irqs[bit] + PXA_ISA_IRQ(0); } static void zeus_ack_irq(unsigned int irq) { __raw_writew(zeus_irq_to_bitmask(irq), ZEUS_CPLD_ISA_IRQ); } static void zeus_mask_irq(unsigned int irq) { zeus_irq_enabled_mask &= ~(zeus_irq_to_bitmask(irq)); } static void zeus_unmask_irq(unsigned int irq) { zeus_irq_enabled_mask |= zeus_irq_to_bitmask(irq); } static inline unsigned long zeus_irq_pending(void) { return __raw_readw(ZEUS_CPLD_ISA_IRQ) & zeus_irq_enabled_mask; } static void zeus_irq_handler(unsigned int irq, struct irq_desc *desc) { unsigned long pending; pending = zeus_irq_pending(); do { /* we're in a chained irq handler, * so ack the interrupt by hand */ desc->chip->ack(gpio_to_irq(ZEUS_ISA_GPIO)); if (likely(pending)) { irq = zeus_bit_to_irq(__ffs(pending)); generic_handle_irq(irq); } pending = zeus_irq_pending(); } while (pending); } static struct irq_chip zeus_irq_chip = { .name = "ISA", .ack = zeus_ack_irq, .mask = zeus_mask_irq, .unmask = zeus_unmask_irq, }; static void __init zeus_init_irq(void) { int level; int isa_irq; pxa27x_init_irq(); /* Peripheral IRQs. It would be nice to move those inside driver configuration, but it is not supported at the moment. */ set_irq_type(gpio_to_irq(ZEUS_AC97_GPIO), IRQ_TYPE_EDGE_RISING); set_irq_type(gpio_to_irq(ZEUS_WAKEUP_GPIO), IRQ_TYPE_EDGE_RISING); set_irq_type(gpio_to_irq(ZEUS_PTT_GPIO), IRQ_TYPE_EDGE_RISING); set_irq_type(gpio_to_irq(ZEUS_EXTGPIO_GPIO), IRQ_TYPE_EDGE_FALLING); set_irq_type(gpio_to_irq(ZEUS_CAN_GPIO), IRQ_TYPE_EDGE_FALLING); /* Setup ISA IRQs */ for (level = 0; level < ARRAY_SIZE(zeus_isa_irqs); level++) { isa_irq = zeus_bit_to_irq(level); set_irq_chip(isa_irq, &zeus_irq_chip); set_irq_handler(isa_irq, handle_edge_irq); set_irq_flags(isa_irq, IRQF_VALID | IRQF_PROBE); } set_irq_type(gpio_to_irq(ZEUS_ISA_GPIO), IRQ_TYPE_EDGE_RISING); set_irq_chained_handler(gpio_to_irq(ZEUS_ISA_GPIO), zeus_irq_handler); } /* * Platform devices */ /* Flash */ static struct resource zeus_mtd_resources[] = { [0] = { /* NOR Flash (up to 64MB) */ .start = ZEUS_FLASH_PHYS, .end = ZEUS_FLASH_PHYS + SZ_64M - 1, .flags = IORESOURCE_MEM, }, [1] = { /* SRAM */ .start = ZEUS_SRAM_PHYS, .end = ZEUS_SRAM_PHYS + SZ_512K - 1, .flags = IORESOURCE_MEM, }, }; static struct physmap_flash_data zeus_flash_data[] = { [0] = { .width = 2, .parts = NULL, .nr_parts = 0, }, }; static struct platform_device zeus_mtd_devices[] = { [0] = { .name = "physmap-flash", .id = 0, .dev = { .platform_data = &zeus_flash_data[0], }, .resource = &zeus_mtd_resources[0], .num_resources = 1, }, }; /* Serial */ static struct resource zeus_serial_resources[] = { { .start = 0x10000000, .end = 0x1000000f, .flags = IORESOURCE_MEM, }, { .start = 0x10800000, .end = 0x1080000f, .flags = IORESOURCE_MEM, }, { .start = 0x11000000, .end = 0x1100000f, .flags = IORESOURCE_MEM, }, { .start = 0x40100000, .end = 0x4010001f, .flags = IORESOURCE_MEM, }, { .start = 0x40200000, .end = 0x4020001f, .flags = IORESOURCE_MEM, }, { .start = 0x40700000, .end = 0x4070001f, .flags = IORESOURCE_MEM, }, }; static struct plat_serial8250_port serial_platform_data[] = { /* External UARTs */ /* FIXME: Shared IRQs on COM1-COM4 will not work properly on v1i1 hardware. */ { /* COM1 */ .mapbase = 0x10000000, .irq = gpio_to_irq(ZEUS_UARTA_GPIO), .irqflags = IRQF_TRIGGER_RISING, .uartclk = 14745600, .regshift = 1, .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, .iotype = UPIO_MEM, }, { /* COM2 */ .mapbase = 0x10800000, .irq = gpio_to_irq(ZEUS_UARTB_GPIO), .irqflags = IRQF_TRIGGER_RISING, .uartclk = 14745600, .regshift = 1, .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, .iotype = UPIO_MEM, }, { /* COM3 */ .mapbase = 0x11000000, .irq = gpio_to_irq(ZEUS_UARTC_GPIO), .irqflags = IRQF_TRIGGER_RISING, .uartclk = 14745600, .regshift = 1, .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, .iotype = UPIO_MEM, }, { /* COM4 */ .mapbase = 0x11800000, .irq = gpio_to_irq(ZEUS_UARTD_GPIO), .irqflags = IRQF_TRIGGER_RISING, .uartclk = 14745600, .regshift = 1, .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, .iotype = UPIO_MEM, }, /* Internal UARTs */ { /* FFUART */ .membase = (void *)&FFUART, .mapbase = __PREG(FFUART), .irq = IRQ_FFUART, .uartclk = 921600 * 16, .regshift = 2, .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, .iotype = UPIO_MEM, }, { /* BTUART */ .membase = (void *)&BTUART, .mapbase = __PREG(BTUART), .irq = IRQ_BTUART, .uartclk = 921600 * 16, .regshift = 2, .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, .iotype = UPIO_MEM, }, { /* STUART */ .membase = (void *)&STUART, .mapbase = __PREG(STUART), .irq = IRQ_STUART, .uartclk = 921600 * 16, .regshift = 2, .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, .iotype = UPIO_MEM, }, { }, }; static struct platform_device zeus_serial_device = { .name = "serial8250", .id = PLAT8250_DEV_PLATFORM, .dev = { .platform_data = serial_platform_data, }, .num_resources = ARRAY_SIZE(zeus_serial_resources), .resource = zeus_serial_resources, }; /* Ethernet */ static struct resource zeus_dm9k0_resource[] = { [0] = { .start = ZEUS_ETH0_PHYS, .end = ZEUS_ETH0_PHYS + 1, .flags = IORESOURCE_MEM }, [1] = { .start = ZEUS_ETH0_PHYS + 2, .end = ZEUS_ETH0_PHYS + 3, .flags = IORESOURCE_MEM }, [2] = { .start = gpio_to_irq(ZEUS_ETH0_GPIO), .end = gpio_to_irq(ZEUS_ETH0_GPIO), .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE, }, }; static struct resource zeus_dm9k1_resource[] = { [0] = { .start = ZEUS_ETH1_PHYS, .end = ZEUS_ETH1_PHYS + 1, .flags = IORESOURCE_MEM }, [1] = { .start = ZEUS_ETH1_PHYS + 2, .end = ZEUS_ETH1_PHYS + 3, .flags = IORESOURCE_MEM, }, [2] = { .start = gpio_to_irq(ZEUS_ETH1_GPIO), .end = gpio_to_irq(ZEUS_ETH1_GPIO), .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE, }, }; static struct dm9000_plat_data zeus_dm9k_platdata = { .flags = DM9000_PLATF_16BITONLY, }; static struct platform_device zeus_dm9k0_device = { .name = "dm9000", .id = 0, .num_resources = ARRAY_SIZE(zeus_dm9k0_resource), .resource = zeus_dm9k0_resource, .dev = { .platform_data = &zeus_dm9k_platdata, } }; static struct platform_device zeus_dm9k1_device = { .name = "dm9000", .id = 1, .num_resources = ARRAY_SIZE(zeus_dm9k1_resource), .resource = zeus_dm9k1_resource, .dev = { .platform_data = &zeus_dm9k_platdata, } }; /* External SRAM */ static struct resource zeus_sram_resource = { .start = ZEUS_SRAM_PHYS, .end = ZEUS_SRAM_PHYS + ZEUS_SRAM_SIZE * 2 - 1, .flags = IORESOURCE_MEM, }; static struct platform_device zeus_sram_device = { .name = "pxa2xx-8bit-sram", .id = 0, .num_resources = 1, .resource = &zeus_sram_resource, }; /* SPI interface on SSP3 */ static struct pxa2xx_spi_master pxa2xx_spi_ssp3_master_info = { .num_chipselect = 1, .enable_dma = 1, }; static struct platform_device pxa2xx_spi_ssp3_device = { .name = "pxa2xx-spi", .id = 3, .dev = { .platform_data = &pxa2xx_spi_ssp3_master_info, }, }; /* Leds */ static struct gpio_led zeus_leds[] = { [0] = { .name = "zeus:yellow:1", .default_trigger = "heartbeat", .gpio = ZEUS_EXT0_GPIO(3), .active_low = 1, }, [1] = { .name = "zeus:yellow:2", .default_trigger = "default-on", .gpio = ZEUS_EXT0_GPIO(4), .active_low = 1, }, [2] = { .name = "zeus:yellow:3", .default_trigger = "default-on", .gpio = ZEUS_EXT0_GPIO(5), .active_low = 1, }, }; static struct gpio_led_platform_data zeus_leds_info = { .leds = zeus_leds, .num_leds = ARRAY_SIZE(zeus_leds), }; static struct platform_device zeus_leds_device = { .name = "leds-gpio", .id = -1, .dev = { .platform_data = &zeus_leds_info, }, }; static void zeus_cf_reset(int state) { u16 cpld_state = __raw_readw(ZEUS_CPLD_CONTROL); if (state) cpld_state |= ZEUS_CPLD_CONTROL_CF_RST; else cpld_state &= ~ZEUS_CPLD_CONTROL_CF_RST; __raw_writew(cpld_state, ZEUS_CPLD_CONTROL); } static struct arcom_pcmcia_pdata zeus_pcmcia_info = { .cd_gpio = ZEUS_CF_CD_GPIO, .rdy_gpio = ZEUS_CF_RDY_GPIO, .pwr_gpio = ZEUS_CF_PWEN_GPIO, .reset = zeus_cf_reset, }; static struct platform_device zeus_pcmcia_device = { .name = "zeus-pcmcia", .id = -1, .dev = { .platform_data = &zeus_pcmcia_info, }, }; static struct platform_device *zeus_devices[] __initdata = { &zeus_serial_device, &zeus_mtd_devices[0], &zeus_dm9k0_device, &zeus_dm9k1_device, &zeus_sram_device, &pxa2xx_spi_ssp3_device, &zeus_leds_device, &zeus_pcmcia_device, }; /* AC'97 */ static pxa2xx_audio_ops_t zeus_ac97_info = { .reset_gpio = 95, }; /* * USB host */ static int zeus_ohci_init(struct device *dev) { int err; /* Switch on port 2. */ if ((err = gpio_request(ZEUS_USB2_PWREN_GPIO, "USB2_PWREN"))) { dev_err(dev, "Can't request USB2_PWREN\n"); return err; } if ((err = gpio_direction_output(ZEUS_USB2_PWREN_GPIO, 1))) { gpio_free(ZEUS_USB2_PWREN_GPIO); dev_err(dev, "Can't enable USB2_PWREN\n"); return err; } /* Port 2 is shared between host and client interface. */ UP2OCR = UP2OCR_HXOE | UP2OCR_HXS | UP2OCR_DMPDE | UP2OCR_DPPDE; return 0; } static void zeus_ohci_exit(struct device *dev) { /* Power-off port 2 */ gpio_direction_output(ZEUS_USB2_PWREN_GPIO, 0); gpio_free(ZEUS_USB2_PWREN_GPIO); } static struct pxaohci_platform_data zeus_ohci_platform_data = { .port_mode = PMM_NPS_MODE, /* Clear Power Control Polarity Low and set Power Sense * Polarity Low. Supply power to USB ports. */ .flags = ENABLE_PORT_ALL | POWER_SENSE_LOW, .init = zeus_ohci_init, .exit = zeus_ohci_exit, }; /* * Flat Panel */ static void zeus_lcd_power(int on, struct fb_var_screeninfo *si) { gpio_set_value(ZEUS_LCD_EN_GPIO, on); } static void zeus_backlight_power(int on) { gpio_set_value(ZEUS_BKLEN_GPIO, on); } static int zeus_setup_fb_gpios(void) { int err; if ((err = gpio_request(ZEUS_LCD_EN_GPIO, "LCD_EN"))) goto out_err; if ((err = gpio_direction_output(ZEUS_LCD_EN_GPIO, 0))) goto out_err_lcd; if ((err = gpio_request(ZEUS_BKLEN_GPIO, "BKLEN"))) goto out_err_lcd; if ((err = gpio_direction_output(ZEUS_BKLEN_GPIO, 0))) goto out_err_bkl; return 0; out_err_bkl: gpio_free(ZEUS_BKLEN_GPIO); out_err_lcd: gpio_free(ZEUS_LCD_EN_GPIO); out_err: return err; } static struct pxafb_mode_info zeus_fb_mode_info[] = { { .pixclock = 39722, .xres = 640, .yres = 480, .bpp = 16, .hsync_len = 63, .left_margin = 16, .right_margin = 81, .vsync_len = 2, .upper_margin = 12, .lower_margin = 31, .sync = 0, }, }; static struct pxafb_mach_info zeus_fb_info = { .modes = zeus_fb_mode_info, .num_modes = 1, .lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL, .pxafb_lcd_power = zeus_lcd_power, .pxafb_backlight_power = zeus_backlight_power, }; /* * MMC/SD Device * * The card detect interrupt isn't debounced so we delay it by 250ms * to give the card a chance to fully insert/eject. */ static struct pxamci_platform_data zeus_mci_platform_data = { .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, .detect_delay = HZ/4, .gpio_card_detect = ZEUS_MMC_CD_GPIO, .gpio_card_ro = ZEUS_MMC_WP_GPIO, .gpio_card_ro_invert = 1, .gpio_power = -1 }; /* * USB Device Controller */ static void zeus_udc_command(int cmd) { switch (cmd) { case PXA2XX_UDC_CMD_DISCONNECT: pr_info("zeus: disconnecting USB client\n"); UP2OCR = UP2OCR_HXOE | UP2OCR_HXS | UP2OCR_DMPDE | UP2OCR_DPPDE; break; case PXA2XX_UDC_CMD_CONNECT: pr_info("zeus: connecting USB client\n"); UP2OCR = UP2OCR_HXOE | UP2OCR_DPPUE; break; } } static struct pxa2xx_udc_mach_info zeus_udc_info = { .udc_command = zeus_udc_command, }; #ifdef CONFIG_PM static void zeus_power_off(void) { local_irq_disable(); pxa27x_cpu_suspend(PWRMODE_DEEPSLEEP); } #else #define zeus_power_off NULL #endif #ifdef CONFIG_APM_EMULATION static void zeus_get_power_status(struct apm_power_info *info) { /* Power supply is always present */ info->ac_line_status = APM_AC_ONLINE; info->battery_status = APM_BATTERY_STATUS_NOT_PRESENT; info->battery_flag = APM_BATTERY_FLAG_NOT_PRESENT; } static inline void zeus_setup_apm(void) { apm_get_power_status = zeus_get_power_status; } #else static inline void zeus_setup_apm(void) { } #endif static int zeus_get_pcb_info(struct i2c_client *client, unsigned gpio, unsigned ngpio, void *context) { int i; u8 pcb_info = 0; for (i = 0; i < 8; i++) { int pcb_bit = gpio + i + 8; if (gpio_request(pcb_bit, "pcb info")) { dev_err(&client->dev, "Can't request pcb info %d\n", i); continue; } if (gpio_direction_input(pcb_bit)) { dev_err(&client->dev, "Can't read pcb info %d\n", i); gpio_free(pcb_bit); continue; } pcb_info |= !!gpio_get_value(pcb_bit) << i; gpio_free(pcb_bit); } dev_info(&client->dev, "Zeus PCB version %d issue %d\n", pcb_info >> 4, pcb_info & 0xf); return 0; } static struct pca953x_platform_data zeus_pca953x_pdata[] = { [0] = { .gpio_base = ZEUS_EXT0_GPIO_BASE, }, [1] = { .gpio_base = ZEUS_EXT1_GPIO_BASE, .setup = zeus_get_pcb_info, }, [2] = { .gpio_base = ZEUS_USER_GPIO_BASE, }, }; static struct i2c_board_info __initdata zeus_i2c_devices[] = { { I2C_BOARD_INFO("pca9535", 0x21), .platform_data = &zeus_pca953x_pdata[0], }, { I2C_BOARD_INFO("pca9535", 0x22), .platform_data = &zeus_pca953x_pdata[1], }, { I2C_BOARD_INFO("pca9535", 0x20), .platform_data = &zeus_pca953x_pdata[2], .irq = gpio_to_irq(ZEUS_EXTGPIO_GPIO), }, { I2C_BOARD_INFO("lm75a", 0x48) }, { I2C_BOARD_INFO("24c01", 0x50) }, { I2C_BOARD_INFO("isl1208", 0x6f) }, }; static mfp_cfg_t zeus_pin_config[] __initdata = { /* AC97 */ GPIO28_AC97_BITCLK, GPIO29_AC97_SDATA_IN_0, GPIO30_AC97_SDATA_OUT, GPIO31_AC97_SYNC, GPIO15_nCS_1, GPIO78_nCS_2, GPIO80_nCS_4, GPIO33_nCS_5, GPIO22_GPIO, GPIO32_MMC_CLK, GPIO92_MMC_DAT_0, GPIO109_MMC_DAT_1, GPIO110_MMC_DAT_2, GPIO111_MMC_DAT_3, GPIO112_MMC_CMD, GPIO88_USBH1_PWR, GPIO89_USBH1_PEN, GPIO119_USBH2_PWR, GPIO120_USBH2_PEN, GPIO86_LCD_LDD_16, GPIO87_LCD_LDD_17, GPIO102_GPIO, GPIO104_CIF_DD_2, GPIO105_CIF_DD_1, GPIO48_nPOE, GPIO49_nPWE, GPIO50_nPIOR, GPIO51_nPIOW, GPIO85_nPCE_1, GPIO54_nPCE_2, GPIO79_PSKTSEL, GPIO55_nPREG, GPIO56_nPWAIT, GPIO57_nIOIS16, GPIO36_GPIO, /* CF CD */ GPIO97_GPIO, /* CF PWREN */ GPIO99_GPIO, /* CF RDY */ }; /* * DM9k MSCx settings: SRAM, 16 bits * 17 cycles delay first access * 5 cycles delay next access * 13 cycles recovery time * faster device */ #define DM9K_MSC_VALUE 0xe4c9 static void __init zeus_init(void) { u16 dm9000_msc = DM9K_MSC_VALUE; system_rev = __raw_readw(ZEUS_CPLD_VERSION); pr_info("Zeus CPLD V%dI%d\n", (system_rev & 0xf0) >> 4, (system_rev & 0x0f)); /* Fix timings for dm9000s (CS1/CS2)*/ MSC0 = (MSC0 & 0xffff) | (dm9000_msc << 16); MSC1 = (MSC1 & 0xffff0000) | dm9000_msc; pm_power_off = zeus_power_off; zeus_setup_apm(); pxa2xx_mfp_config(ARRAY_AND_SIZE(zeus_pin_config)); platform_add_devices(zeus_devices, ARRAY_SIZE(zeus_devices)); pxa_set_ohci_info(&zeus_ohci_platform_data); if (zeus_setup_fb_gpios()) pr_err("Failed to setup fb gpios\n"); else set_pxa_fb_info(&zeus_fb_info); pxa_set_mci_info(&zeus_mci_platform_data); pxa_set_udc_info(&zeus_udc_info); pxa_set_ac97_info(&zeus_ac97_info); pxa_set_i2c_info(NULL); i2c_register_board_info(0, ARRAY_AND_SIZE(zeus_i2c_devices)); } static struct map_desc zeus_io_desc[] __initdata = { { .virtual = ZEUS_CPLD_VERSION, .pfn = __phys_to_pfn(ZEUS_CPLD_VERSION_PHYS), .length = 0x1000, .type = MT_DEVICE, }, { .virtual = ZEUS_CPLD_ISA_IRQ, .pfn = __phys_to_pfn(ZEUS_CPLD_ISA_IRQ_PHYS), .length = 0x1000, .type = MT_DEVICE, }, { .virtual = ZEUS_CPLD_CONTROL, .pfn = __phys_to_pfn(ZEUS_CPLD_CONTROL_PHYS), .length = 0x1000, .type = MT_DEVICE, }, { .virtual = ZEUS_CPLD_EXTWDOG, .pfn = __phys_to_pfn(ZEUS_CPLD_EXTWDOG_PHYS), .length = 0x1000, .type = MT_DEVICE, }, { .virtual = ZEUS_PC104IO, .pfn = __phys_to_pfn(ZEUS_PC104IO_PHYS), .length = 0x00800000, .type = MT_DEVICE, }, }; static void __init zeus_map_io(void) { pxa_map_io(); iotable_init(zeus_io_desc, ARRAY_SIZE(zeus_io_desc)); /* Clear PSPR to ensure a full restart on wake-up. */ PMCR = PSPR = 0; /* enable internal 32.768Khz oscillator (ignore OSCC_OOK) */ OSCC |= OSCC_OON; /* Some clock cycles later (from OSCC_ON), programme PCFR (OPDE...). * float chip selects and PCMCIA */ PCFR = PCFR_OPDE | PCFR_DC_EN | PCFR_FS | PCFR_FP; } MACHINE_START(ARCOM_ZEUS, "Arcom/Eurotech ZEUS") /* Maintainer: Marc Zyngier */ .phys_io = 0x40000000, .io_pg_offst = ((io_p2v(0x40000000) >> 18) & 0xfffc), .boot_params = 0xa0000100, .map_io = zeus_map_io, .init_irq = zeus_init_irq, .timer = &pxa_timer, .init_machine = zeus_init, MACHINE_END