| /* |
| * linux/arch/arm/mach-pxa/viper.c |
| * |
| * Support for the Arcom VIPER SBC. |
| * |
| * Author: Ian Campbell |
| * Created: Feb 03, 2003 |
| * Copyright: Arcom Control Systems |
| * |
| * Maintained by Marc Zyngier <maz@misterjones.org> |
| * <marc.zyngier@altran.com> |
| * |
| * Based on lubbock.c: |
| * Author: Nicolas Pitre |
| * Created: Jun 15, 2001 |
| * Copyright: MontaVista Software Inc. |
| * |
| * 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 <linux/types.h> |
| #include <linux/memory.h> |
| #include <linux/cpu.h> |
| #include <linux/cpufreq.h> |
| #include <linux/delay.h> |
| #include <linux/fs.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/interrupt.h> |
| #include <linux/major.h> |
| #include <linux/module.h> |
| #include <linux/pm.h> |
| #include <linux/sched.h> |
| #include <linux/gpio.h> |
| #include <linux/jiffies.h> |
| #include <linux/i2c-gpio.h> |
| #include <linux/i2c/pxa-i2c.h> |
| #include <linux/serial_8250.h> |
| #include <linux/smc91x.h> |
| #include <linux/pwm_backlight.h> |
| #include <linux/usb/isp116x.h> |
| #include <linux/mtd/mtd.h> |
| #include <linux/mtd/partitions.h> |
| #include <linux/mtd/physmap.h> |
| |
| #include <mach/pxa25x.h> |
| #include <mach/audio.h> |
| #include <mach/pxafb.h> |
| #include <mach/regs-uart.h> |
| #include <mach/arcom-pcmcia.h> |
| #include <mach/viper.h> |
| |
| #include <asm/setup.h> |
| #include <asm/mach-types.h> |
| #include <asm/irq.h> |
| #include <asm/sizes.h> |
| |
| #include <asm/mach/arch.h> |
| #include <asm/mach/map.h> |
| #include <asm/mach/irq.h> |
| |
| #include "generic.h" |
| #include "devices.h" |
| |
| static unsigned int icr; |
| |
| static void viper_icr_set_bit(unsigned int bit) |
| { |
| icr |= bit; |
| VIPER_ICR = icr; |
| } |
| |
| static void viper_icr_clear_bit(unsigned int bit) |
| { |
| icr &= ~bit; |
| VIPER_ICR = icr; |
| } |
| |
| /* This function is used from the pcmcia module to reset the CF */ |
| static void viper_cf_reset(int state) |
| { |
| if (state) |
| viper_icr_set_bit(VIPER_ICR_CF_RST); |
| else |
| viper_icr_clear_bit(VIPER_ICR_CF_RST); |
| } |
| |
| static struct arcom_pcmcia_pdata viper_pcmcia_info = { |
| .cd_gpio = VIPER_CF_CD_GPIO, |
| .rdy_gpio = VIPER_CF_RDY_GPIO, |
| .pwr_gpio = VIPER_CF_POWER_GPIO, |
| .reset = viper_cf_reset, |
| }; |
| |
| static struct platform_device viper_pcmcia_device = { |
| .name = "viper-pcmcia", |
| .id = -1, |
| .dev = { |
| .platform_data = &viper_pcmcia_info, |
| }, |
| }; |
| |
| /* |
| * The CPLD version register was not present on VIPER boards prior to |
| * v2i1. On v1 boards where the version register is not present we |
| * will just read back the previous value from the databus. |
| * |
| * Therefore we do two reads. The first time we write 0 to the |
| * (read-only) register before reading and the second time we write |
| * 0xff first. If the two reads do not match or they read back as 0xff |
| * or 0x00 then we have version 1 hardware. |
| */ |
| static u8 viper_hw_version(void) |
| { |
| u8 v1, v2; |
| unsigned long flags; |
| |
| local_irq_save(flags); |
| |
| VIPER_VERSION = 0; |
| v1 = VIPER_VERSION; |
| VIPER_VERSION = 0xff; |
| v2 = VIPER_VERSION; |
| |
| v1 = (v1 != v2 || v1 == 0xff) ? 0 : v1; |
| |
| local_irq_restore(flags); |
| return v1; |
| } |
| |
| /* CPU sysdev */ |
| static int viper_cpu_suspend(struct sys_device *sysdev, pm_message_t state) |
| { |
| viper_icr_set_bit(VIPER_ICR_R_DIS); |
| return 0; |
| } |
| |
| static int viper_cpu_resume(struct sys_device *sysdev) |
| { |
| viper_icr_clear_bit(VIPER_ICR_R_DIS); |
| return 0; |
| } |
| |
| static struct sysdev_driver viper_cpu_sysdev_driver = { |
| .suspend = viper_cpu_suspend, |
| .resume = viper_cpu_resume, |
| }; |
| |
| static unsigned int current_voltage_divisor; |
| |
| /* |
| * If force is not true then step from existing to new divisor. If |
| * force is true then jump straight to the new divisor. Stepping is |
| * used because if the jump in voltage is too large, the VCC can dip |
| * too low and the regulator cuts out. |
| * |
| * force can be used to initialize the divisor to a know state by |
| * setting the value for the current clock speed, since we are already |
| * running at that speed we know the voltage should be pretty close so |
| * the jump won't be too large |
| */ |
| static void viper_set_core_cpu_voltage(unsigned long khz, int force) |
| { |
| int i = 0; |
| unsigned int divisor = 0; |
| const char *v; |
| |
| if (khz < 200000) { |
| v = "1.0"; divisor = 0xfff; |
| } else if (khz < 300000) { |
| v = "1.1"; divisor = 0xde5; |
| } else { |
| v = "1.3"; divisor = 0x325; |
| } |
| |
| pr_debug("viper: setting CPU core voltage to %sV at %d.%03dMHz\n", |
| v, (int)khz / 1000, (int)khz % 1000); |
| |
| #define STEP 0x100 |
| do { |
| int step; |
| |
| if (force) |
| step = divisor; |
| else if (current_voltage_divisor < divisor - STEP) |
| step = current_voltage_divisor + STEP; |
| else if (current_voltage_divisor > divisor + STEP) |
| step = current_voltage_divisor - STEP; |
| else |
| step = divisor; |
| force = 0; |
| |
| gpio_set_value(VIPER_PSU_CLK_GPIO, 0); |
| gpio_set_value(VIPER_PSU_nCS_LD_GPIO, 0); |
| |
| for (i = 1 << 11 ; i > 0 ; i >>= 1) { |
| udelay(1); |
| |
| gpio_set_value(VIPER_PSU_DATA_GPIO, step & i); |
| udelay(1); |
| |
| gpio_set_value(VIPER_PSU_CLK_GPIO, 1); |
| udelay(1); |
| |
| gpio_set_value(VIPER_PSU_CLK_GPIO, 0); |
| } |
| udelay(1); |
| |
| gpio_set_value(VIPER_PSU_nCS_LD_GPIO, 1); |
| udelay(1); |
| |
| gpio_set_value(VIPER_PSU_nCS_LD_GPIO, 0); |
| |
| current_voltage_divisor = step; |
| } while (current_voltage_divisor != divisor); |
| } |
| |
| /* Interrupt handling */ |
| static unsigned long viper_irq_enabled_mask; |
| static const int viper_isa_irqs[] = { 3, 4, 5, 6, 7, 10, 11, 12, 9, 14, 15 }; |
| static const int viper_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 */ |
| 1 << 8, /* ISA irq #9 */ |
| 1 << 5, /* ISA irq #10 */ |
| 1 << 6, /* ISA irq #11 */ |
| 1 << 7, /* ISA irq #12 */ |
| 0, /* ISA irq #13, invalid */ |
| 1 << 9, /* ISA irq #14 */ |
| 1 << 10, /* ISA irq #15 */ |
| }; |
| |
| static inline int viper_irq_to_bitmask(unsigned int irq) |
| { |
| return viper_isa_irq_map[irq - PXA_ISA_IRQ(0)]; |
| } |
| |
| static inline int viper_bit_to_irq(int bit) |
| { |
| return viper_isa_irqs[bit] + PXA_ISA_IRQ(0); |
| } |
| |
| static void viper_ack_irq(struct irq_data *d) |
| { |
| int viper_irq = viper_irq_to_bitmask(d->irq); |
| |
| if (viper_irq & 0xff) |
| VIPER_LO_IRQ_STATUS = viper_irq; |
| else |
| VIPER_HI_IRQ_STATUS = (viper_irq >> 8); |
| } |
| |
| static void viper_mask_irq(struct irq_data *d) |
| { |
| viper_irq_enabled_mask &= ~(viper_irq_to_bitmask(d->irq)); |
| } |
| |
| static void viper_unmask_irq(struct irq_data *d) |
| { |
| viper_irq_enabled_mask |= viper_irq_to_bitmask(d->irq); |
| } |
| |
| static inline unsigned long viper_irq_pending(void) |
| { |
| return (VIPER_HI_IRQ_STATUS << 8 | VIPER_LO_IRQ_STATUS) & |
| viper_irq_enabled_mask; |
| } |
| |
| static void viper_irq_handler(unsigned int irq, struct irq_desc *desc) |
| { |
| unsigned long pending; |
| |
| pending = viper_irq_pending(); |
| do { |
| /* we're in a chained irq handler, |
| * so ack the interrupt by hand */ |
| desc->irq_data.chip->irq_ack(&desc->irq_data); |
| |
| if (likely(pending)) { |
| irq = viper_bit_to_irq(__ffs(pending)); |
| generic_handle_irq(irq); |
| } |
| pending = viper_irq_pending(); |
| } while (pending); |
| } |
| |
| static struct irq_chip viper_irq_chip = { |
| .name = "ISA", |
| .irq_ack = viper_ack_irq, |
| .irq_mask = viper_mask_irq, |
| .irq_unmask = viper_unmask_irq |
| }; |
| |
| static void __init viper_init_irq(void) |
| { |
| int level; |
| int isa_irq; |
| |
| pxa25x_init_irq(); |
| |
| /* setup ISA IRQs */ |
| for (level = 0; level < ARRAY_SIZE(viper_isa_irqs); level++) { |
| isa_irq = viper_bit_to_irq(level); |
| set_irq_chip(isa_irq, &viper_irq_chip); |
| set_irq_handler(isa_irq, handle_edge_irq); |
| set_irq_flags(isa_irq, IRQF_VALID | IRQF_PROBE); |
| } |
| |
| set_irq_chained_handler(gpio_to_irq(VIPER_CPLD_GPIO), |
| viper_irq_handler); |
| set_irq_type(gpio_to_irq(VIPER_CPLD_GPIO), IRQ_TYPE_EDGE_BOTH); |
| } |
| |
| /* Flat Panel */ |
| static struct pxafb_mode_info fb_mode_info[] = { |
| { |
| .pixclock = 157500, |
| |
| .xres = 320, |
| .yres = 240, |
| |
| .bpp = 16, |
| |
| .hsync_len = 63, |
| .left_margin = 7, |
| .right_margin = 13, |
| |
| .vsync_len = 20, |
| .upper_margin = 0, |
| .lower_margin = 0, |
| |
| .sync = 0, |
| }, |
| }; |
| |
| static struct pxafb_mach_info fb_info = { |
| .modes = fb_mode_info, |
| .num_modes = 1, |
| .lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL, |
| }; |
| |
| static int viper_backlight_init(struct device *dev) |
| { |
| int ret; |
| |
| /* GPIO9 and 10 control FB backlight. Initialise to off */ |
| ret = gpio_request(VIPER_BCKLIGHT_EN_GPIO, "Backlight"); |
| if (ret) |
| goto err_request_bckl; |
| |
| ret = gpio_request(VIPER_LCD_EN_GPIO, "LCD"); |
| if (ret) |
| goto err_request_lcd; |
| |
| ret = gpio_direction_output(VIPER_BCKLIGHT_EN_GPIO, 0); |
| if (ret) |
| goto err_dir; |
| |
| ret = gpio_direction_output(VIPER_LCD_EN_GPIO, 0); |
| if (ret) |
| goto err_dir; |
| |
| return 0; |
| |
| err_dir: |
| gpio_free(VIPER_LCD_EN_GPIO); |
| err_request_lcd: |
| gpio_free(VIPER_BCKLIGHT_EN_GPIO); |
| err_request_bckl: |
| dev_err(dev, "Failed to setup LCD GPIOs\n"); |
| |
| return ret; |
| } |
| |
| static int viper_backlight_notify(struct device *dev, int brightness) |
| { |
| gpio_set_value(VIPER_LCD_EN_GPIO, !!brightness); |
| gpio_set_value(VIPER_BCKLIGHT_EN_GPIO, !!brightness); |
| |
| return brightness; |
| } |
| |
| static void viper_backlight_exit(struct device *dev) |
| { |
| gpio_free(VIPER_LCD_EN_GPIO); |
| gpio_free(VIPER_BCKLIGHT_EN_GPIO); |
| } |
| |
| static struct platform_pwm_backlight_data viper_backlight_data = { |
| .pwm_id = 0, |
| .max_brightness = 100, |
| .dft_brightness = 100, |
| .pwm_period_ns = 1000000, |
| .init = viper_backlight_init, |
| .notify = viper_backlight_notify, |
| .exit = viper_backlight_exit, |
| }; |
| |
| static struct platform_device viper_backlight_device = { |
| .name = "pwm-backlight", |
| .dev = { |
| .parent = &pxa25x_device_pwm0.dev, |
| .platform_data = &viper_backlight_data, |
| }, |
| }; |
| |
| /* Ethernet */ |
| static struct resource smc91x_resources[] = { |
| [0] = { |
| .name = "smc91x-regs", |
| .start = VIPER_ETH_PHYS + 0x300, |
| .end = VIPER_ETH_PHYS + 0x30f, |
| .flags = IORESOURCE_MEM, |
| }, |
| [1] = { |
| .start = gpio_to_irq(VIPER_ETH_GPIO), |
| .end = gpio_to_irq(VIPER_ETH_GPIO), |
| .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE, |
| }, |
| [2] = { |
| .name = "smc91x-data32", |
| .start = VIPER_ETH_DATA_PHYS, |
| .end = VIPER_ETH_DATA_PHYS + 3, |
| .flags = IORESOURCE_MEM, |
| }, |
| }; |
| |
| static struct smc91x_platdata viper_smc91x_info = { |
| .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT, |
| .leda = RPC_LED_100_10, |
| .ledb = RPC_LED_TX_RX, |
| }; |
| |
| static struct platform_device smc91x_device = { |
| .name = "smc91x", |
| .id = -1, |
| .num_resources = ARRAY_SIZE(smc91x_resources), |
| .resource = smc91x_resources, |
| .dev = { |
| .platform_data = &viper_smc91x_info, |
| }, |
| }; |
| |
| /* i2c */ |
| static struct i2c_gpio_platform_data i2c_bus_data = { |
| .sda_pin = VIPER_RTC_I2C_SDA_GPIO, |
| .scl_pin = VIPER_RTC_I2C_SCL_GPIO, |
| .udelay = 10, |
| .timeout = HZ, |
| }; |
| |
| static struct platform_device i2c_bus_device = { |
| .name = "i2c-gpio", |
| .id = 1, /* pxa2xx-i2c is bus 0, so start at 1 */ |
| .dev = { |
| .platform_data = &i2c_bus_data, |
| } |
| }; |
| |
| static struct i2c_board_info __initdata viper_i2c_devices[] = { |
| { |
| I2C_BOARD_INFO("ds1338", 0x68), |
| }, |
| }; |
| |
| /* |
| * Serial configuration: |
| * You can either have the standard PXA ports driven by the PXA driver, |
| * or all the ports (PXA + 16850) driven by the 8250 driver. |
| * Choose your poison. |
| */ |
| |
| static struct resource viper_serial_resources[] = { |
| #ifndef CONFIG_SERIAL_PXA |
| { |
| .start = 0x40100000, |
| .end = 0x4010001f, |
| .flags = IORESOURCE_MEM, |
| }, |
| { |
| .start = 0x40200000, |
| .end = 0x4020001f, |
| .flags = IORESOURCE_MEM, |
| }, |
| { |
| .start = 0x40700000, |
| .end = 0x4070001f, |
| .flags = IORESOURCE_MEM, |
| }, |
| { |
| .start = VIPER_UARTA_PHYS, |
| .end = VIPER_UARTA_PHYS + 0xf, |
| .flags = IORESOURCE_MEM, |
| }, |
| { |
| .start = VIPER_UARTB_PHYS, |
| .end = VIPER_UARTB_PHYS + 0xf, |
| .flags = IORESOURCE_MEM, |
| }, |
| #else |
| { |
| 0, |
| }, |
| #endif |
| }; |
| |
| static struct plat_serial8250_port serial_platform_data[] = { |
| #ifndef CONFIG_SERIAL_PXA |
| /* Internal UARTs */ |
| { |
| .membase = (void *)&FFUART, |
| .mapbase = __PREG(FFUART), |
| .irq = IRQ_FFUART, |
| .uartclk = 921600 * 16, |
| .regshift = 2, |
| .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, |
| .iotype = UPIO_MEM, |
| }, |
| { |
| .membase = (void *)&BTUART, |
| .mapbase = __PREG(BTUART), |
| .irq = IRQ_BTUART, |
| .uartclk = 921600 * 16, |
| .regshift = 2, |
| .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, |
| .iotype = UPIO_MEM, |
| }, |
| { |
| .membase = (void *)&STUART, |
| .mapbase = __PREG(STUART), |
| .irq = IRQ_STUART, |
| .uartclk = 921600 * 16, |
| .regshift = 2, |
| .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, |
| .iotype = UPIO_MEM, |
| }, |
| /* External UARTs */ |
| { |
| .mapbase = VIPER_UARTA_PHYS, |
| .irq = gpio_to_irq(VIPER_UARTA_GPIO), |
| .irqflags = IRQF_TRIGGER_RISING, |
| .uartclk = 1843200, |
| .regshift = 1, |
| .iotype = UPIO_MEM, |
| .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP | |
| UPF_SKIP_TEST, |
| }, |
| { |
| .mapbase = VIPER_UARTB_PHYS, |
| .irq = gpio_to_irq(VIPER_UARTB_GPIO), |
| .irqflags = IRQF_TRIGGER_RISING, |
| .uartclk = 1843200, |
| .regshift = 1, |
| .iotype = UPIO_MEM, |
| .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP | |
| UPF_SKIP_TEST, |
| }, |
| #endif |
| { }, |
| }; |
| |
| static struct platform_device serial_device = { |
| .name = "serial8250", |
| .id = 0, |
| .dev = { |
| .platform_data = serial_platform_data, |
| }, |
| .num_resources = ARRAY_SIZE(viper_serial_resources), |
| .resource = viper_serial_resources, |
| }; |
| |
| /* USB */ |
| static void isp116x_delay(struct device *dev, int delay) |
| { |
| ndelay(delay); |
| } |
| |
| static struct resource isp116x_resources[] = { |
| [0] = { /* DATA */ |
| .start = VIPER_USB_PHYS + 0, |
| .end = VIPER_USB_PHYS + 1, |
| .flags = IORESOURCE_MEM, |
| }, |
| [1] = { /* ADDR */ |
| .start = VIPER_USB_PHYS + 2, |
| .end = VIPER_USB_PHYS + 3, |
| .flags = IORESOURCE_MEM, |
| }, |
| [2] = { |
| .start = gpio_to_irq(VIPER_USB_GPIO), |
| .end = gpio_to_irq(VIPER_USB_GPIO), |
| .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE, |
| }, |
| }; |
| |
| /* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */ |
| static struct isp116x_platform_data isp116x_platform_data = { |
| /* Enable internal resistors on downstream ports */ |
| .sel15Kres = 1, |
| /* On-chip overcurrent protection */ |
| .oc_enable = 1, |
| /* INT output polarity */ |
| .int_act_high = 1, |
| /* INT edge or level triggered */ |
| .int_edge_triggered = 0, |
| |
| /* WAKEUP pin connected - NOT SUPPORTED */ |
| /* .remote_wakeup_connected = 0, */ |
| /* Wakeup by devices on usb bus enabled */ |
| .remote_wakeup_enable = 0, |
| .delay = isp116x_delay, |
| }; |
| |
| static struct platform_device isp116x_device = { |
| .name = "isp116x-hcd", |
| .id = -1, |
| .num_resources = ARRAY_SIZE(isp116x_resources), |
| .resource = isp116x_resources, |
| .dev = { |
| .platform_data = &isp116x_platform_data, |
| }, |
| |
| }; |
| |
| /* MTD */ |
| static struct resource mtd_resources[] = { |
| [0] = { /* RedBoot config + filesystem flash */ |
| .start = VIPER_FLASH_PHYS, |
| .end = VIPER_FLASH_PHYS + SZ_32M - 1, |
| .flags = IORESOURCE_MEM, |
| }, |
| [1] = { /* Boot flash */ |
| .start = VIPER_BOOT_PHYS, |
| .end = VIPER_BOOT_PHYS + SZ_1M - 1, |
| .flags = IORESOURCE_MEM, |
| }, |
| [2] = { /* |
| * SRAM size is actually 256KB, 8bits, with a sparse mapping |
| * (each byte is on a 16bit boundary). |
| */ |
| .start = _VIPER_SRAM_BASE, |
| .end = _VIPER_SRAM_BASE + SZ_512K - 1, |
| .flags = IORESOURCE_MEM, |
| }, |
| }; |
| |
| static struct mtd_partition viper_boot_flash_partition = { |
| .name = "RedBoot", |
| .size = SZ_1M, |
| .offset = 0, |
| .mask_flags = MTD_WRITEABLE, /* force R/O */ |
| }; |
| |
| static struct physmap_flash_data viper_flash_data[] = { |
| [0] = { |
| .width = 2, |
| .parts = NULL, |
| .nr_parts = 0, |
| }, |
| [1] = { |
| .width = 2, |
| .parts = &viper_boot_flash_partition, |
| .nr_parts = 1, |
| }, |
| }; |
| |
| static struct platform_device viper_mtd_devices[] = { |
| [0] = { |
| .name = "physmap-flash", |
| .id = 0, |
| .dev = { |
| .platform_data = &viper_flash_data[0], |
| }, |
| .resource = &mtd_resources[0], |
| .num_resources = 1, |
| }, |
| [1] = { |
| .name = "physmap-flash", |
| .id = 1, |
| .dev = { |
| .platform_data = &viper_flash_data[1], |
| }, |
| .resource = &mtd_resources[1], |
| .num_resources = 1, |
| }, |
| }; |
| |
| static struct platform_device *viper_devs[] __initdata = { |
| &smc91x_device, |
| &i2c_bus_device, |
| &serial_device, |
| &isp116x_device, |
| &viper_mtd_devices[0], |
| &viper_mtd_devices[1], |
| &viper_backlight_device, |
| &viper_pcmcia_device, |
| }; |
| |
| static mfp_cfg_t viper_pin_config[] __initdata = { |
| /* Chip selects */ |
| GPIO15_nCS_1, |
| GPIO78_nCS_2, |
| GPIO79_nCS_3, |
| GPIO80_nCS_4, |
| GPIO33_nCS_5, |
| |
| /* AC97 */ |
| GPIO28_AC97_BITCLK, |
| GPIO29_AC97_SDATA_IN_0, |
| GPIO30_AC97_SDATA_OUT, |
| GPIO31_AC97_SYNC, |
| |
| /* FP Backlight */ |
| GPIO9_GPIO, /* VIPER_BCKLIGHT_EN_GPIO */ |
| GPIO10_GPIO, /* VIPER_LCD_EN_GPIO */ |
| GPIO16_PWM0_OUT, |
| |
| /* Ethernet PHY Ready */ |
| GPIO18_RDY, |
| |
| /* Serial shutdown */ |
| GPIO12_GPIO | MFP_LPM_DRIVE_HIGH, /* VIPER_UART_SHDN_GPIO */ |
| |
| /* Compact-Flash / PC104 */ |
| GPIO48_nPOE, |
| GPIO49_nPWE, |
| GPIO50_nPIOR, |
| GPIO51_nPIOW, |
| GPIO52_nPCE_1, |
| GPIO53_nPCE_2, |
| GPIO54_nPSKTSEL, |
| GPIO55_nPREG, |
| GPIO56_nPWAIT, |
| GPIO57_nIOIS16, |
| GPIO8_GPIO, /* VIPER_CF_RDY_GPIO */ |
| GPIO32_GPIO, /* VIPER_CF_CD_GPIO */ |
| GPIO82_GPIO, /* VIPER_CF_POWER_GPIO */ |
| |
| /* Integrated UPS control */ |
| GPIO20_GPIO, /* VIPER_UPS_GPIO */ |
| |
| /* Vcc regulator control */ |
| GPIO6_GPIO, /* VIPER_PSU_DATA_GPIO */ |
| GPIO11_GPIO, /* VIPER_PSU_CLK_GPIO */ |
| GPIO19_GPIO, /* VIPER_PSU_nCS_LD_GPIO */ |
| |
| /* i2c busses */ |
| GPIO26_GPIO, /* VIPER_TPM_I2C_SDA_GPIO */ |
| GPIO27_GPIO, /* VIPER_TPM_I2C_SCL_GPIO */ |
| GPIO83_GPIO, /* VIPER_RTC_I2C_SDA_GPIO */ |
| GPIO84_GPIO, /* VIPER_RTC_I2C_SCL_GPIO */ |
| |
| /* PC/104 Interrupt */ |
| GPIO1_GPIO | WAKEUP_ON_EDGE_RISE, /* VIPER_CPLD_GPIO */ |
| }; |
| |
| static unsigned long viper_tpm; |
| |
| static int __init viper_tpm_setup(char *str) |
| { |
| strict_strtoul(str, 10, &viper_tpm); |
| return 1; |
| } |
| |
| __setup("tpm=", viper_tpm_setup); |
| |
| static void __init viper_tpm_init(void) |
| { |
| struct platform_device *tpm_device; |
| struct i2c_gpio_platform_data i2c_tpm_data = { |
| .sda_pin = VIPER_TPM_I2C_SDA_GPIO, |
| .scl_pin = VIPER_TPM_I2C_SCL_GPIO, |
| .udelay = 10, |
| .timeout = HZ, |
| }; |
| char *errstr; |
| |
| /* Allocate TPM i2c bus if requested */ |
| if (!viper_tpm) |
| return; |
| |
| tpm_device = platform_device_alloc("i2c-gpio", 2); |
| if (tpm_device) { |
| if (!platform_device_add_data(tpm_device, |
| &i2c_tpm_data, |
| sizeof(i2c_tpm_data))) { |
| if (platform_device_add(tpm_device)) { |
| errstr = "register TPM i2c bus"; |
| goto error_free_tpm; |
| } |
| } else { |
| errstr = "allocate TPM i2c bus data"; |
| goto error_free_tpm; |
| } |
| } else { |
| errstr = "allocate TPM i2c device"; |
| goto error_tpm; |
| } |
| |
| return; |
| |
| error_free_tpm: |
| kfree(tpm_device); |
| error_tpm: |
| pr_err("viper: Couldn't %s, giving up\n", errstr); |
| } |
| |
| static void __init viper_init_vcore_gpios(void) |
| { |
| if (gpio_request(VIPER_PSU_DATA_GPIO, "PSU data")) |
| goto err_request_data; |
| |
| if (gpio_request(VIPER_PSU_CLK_GPIO, "PSU clock")) |
| goto err_request_clk; |
| |
| if (gpio_request(VIPER_PSU_nCS_LD_GPIO, "PSU cs")) |
| goto err_request_cs; |
| |
| if (gpio_direction_output(VIPER_PSU_DATA_GPIO, 0) || |
| gpio_direction_output(VIPER_PSU_CLK_GPIO, 0) || |
| gpio_direction_output(VIPER_PSU_nCS_LD_GPIO, 0)) |
| goto err_dir; |
| |
| /* c/should assume redboot set the correct level ??? */ |
| viper_set_core_cpu_voltage(get_clk_frequency_khz(0), 1); |
| |
| return; |
| |
| err_dir: |
| gpio_free(VIPER_PSU_nCS_LD_GPIO); |
| err_request_cs: |
| gpio_free(VIPER_PSU_CLK_GPIO); |
| err_request_clk: |
| gpio_free(VIPER_PSU_DATA_GPIO); |
| err_request_data: |
| pr_err("viper: Failed to setup vcore control GPIOs\n"); |
| } |
| |
| static void __init viper_init_serial_gpio(void) |
| { |
| if (gpio_request(VIPER_UART_SHDN_GPIO, "UARTs shutdown")) |
| goto err_request; |
| |
| if (gpio_direction_output(VIPER_UART_SHDN_GPIO, 0)) |
| goto err_dir; |
| |
| return; |
| |
| err_dir: |
| gpio_free(VIPER_UART_SHDN_GPIO); |
| err_request: |
| pr_err("viper: Failed to setup UART shutdown GPIO\n"); |
| } |
| |
| #ifdef CONFIG_CPU_FREQ |
| static int viper_cpufreq_notifier(struct notifier_block *nb, |
| unsigned long val, void *data) |
| { |
| struct cpufreq_freqs *freq = data; |
| |
| /* TODO: Adjust timings??? */ |
| |
| switch (val) { |
| case CPUFREQ_PRECHANGE: |
| if (freq->old < freq->new) { |
| /* we are getting faster so raise the voltage |
| * before we change freq */ |
| viper_set_core_cpu_voltage(freq->new, 0); |
| } |
| break; |
| case CPUFREQ_POSTCHANGE: |
| if (freq->old > freq->new) { |
| /* we are slowing down so drop the power |
| * after we change freq */ |
| viper_set_core_cpu_voltage(freq->new, 0); |
| } |
| break; |
| case CPUFREQ_RESUMECHANGE: |
| viper_set_core_cpu_voltage(freq->new, 0); |
| break; |
| default: |
| /* ignore */ |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static struct notifier_block viper_cpufreq_notifier_block = { |
| .notifier_call = viper_cpufreq_notifier |
| }; |
| |
| static void __init viper_init_cpufreq(void) |
| { |
| if (cpufreq_register_notifier(&viper_cpufreq_notifier_block, |
| CPUFREQ_TRANSITION_NOTIFIER)) |
| pr_err("viper: Failed to setup cpufreq notifier\n"); |
| } |
| #else |
| static inline void viper_init_cpufreq(void) {} |
| #endif |
| |
| static void viper_power_off(void) |
| { |
| pr_notice("Shutting off UPS\n"); |
| gpio_set_value(VIPER_UPS_GPIO, 1); |
| /* Spin to death... */ |
| while (1); |
| } |
| |
| static void __init viper_init(void) |
| { |
| u8 version; |
| |
| pm_power_off = viper_power_off; |
| |
| pxa2xx_mfp_config(ARRAY_AND_SIZE(viper_pin_config)); |
| |
| pxa_set_ffuart_info(NULL); |
| pxa_set_btuart_info(NULL); |
| pxa_set_stuart_info(NULL); |
| |
| /* Wake-up serial console */ |
| viper_init_serial_gpio(); |
| |
| set_pxa_fb_info(&fb_info); |
| |
| /* v1 hardware cannot use the datacs line */ |
| version = viper_hw_version(); |
| if (version == 0) |
| smc91x_device.num_resources--; |
| |
| pxa_set_i2c_info(NULL); |
| platform_add_devices(viper_devs, ARRAY_SIZE(viper_devs)); |
| |
| viper_init_vcore_gpios(); |
| viper_init_cpufreq(); |
| |
| sysdev_driver_register(&cpu_sysdev_class, &viper_cpu_sysdev_driver); |
| |
| if (version) { |
| pr_info("viper: hardware v%di%d detected. " |
| "CPLD revision %d.\n", |
| VIPER_BOARD_VERSION(version), |
| VIPER_BOARD_ISSUE(version), |
| VIPER_CPLD_REVISION(version)); |
| system_rev = (VIPER_BOARD_VERSION(version) << 8) | |
| (VIPER_BOARD_ISSUE(version) << 4) | |
| VIPER_CPLD_REVISION(version); |
| } else { |
| pr_info("viper: No version register.\n"); |
| } |
| |
| i2c_register_board_info(1, ARRAY_AND_SIZE(viper_i2c_devices)); |
| |
| viper_tpm_init(); |
| pxa_set_ac97_info(NULL); |
| } |
| |
| static struct map_desc viper_io_desc[] __initdata = { |
| { |
| .virtual = VIPER_CPLD_BASE, |
| .pfn = __phys_to_pfn(VIPER_CPLD_PHYS), |
| .length = 0x00300000, |
| .type = MT_DEVICE, |
| }, |
| { |
| .virtual = VIPER_PC104IO_BASE, |
| .pfn = __phys_to_pfn(0x30000000), |
| .length = 0x00800000, |
| .type = MT_DEVICE, |
| }, |
| }; |
| |
| static void __init viper_map_io(void) |
| { |
| pxa25x_map_io(); |
| |
| iotable_init(viper_io_desc, ARRAY_SIZE(viper_io_desc)); |
| |
| PCFR |= PCFR_OPDE; |
| } |
| |
| MACHINE_START(VIPER, "Arcom/Eurotech VIPER SBC") |
| /* Maintainer: Marc Zyngier <maz@misterjones.org> */ |
| .boot_params = 0xa0000100, |
| .map_io = viper_map_io, |
| .init_irq = viper_init_irq, |
| .timer = &pxa_timer, |
| .init_machine = viper_init, |
| MACHINE_END |