diff options
Diffstat (limited to 'arch/arm/mach-pxa/viper.c')
| -rw-r--r-- | arch/arm/mach-pxa/viper.c | 1034 |
1 files changed, 0 insertions, 1034 deletions
diff --git a/arch/arm/mach-pxa/viper.c b/arch/arm/mach-pxa/viper.c deleted file mode 100644 index 5b43351ee840..000000000000 --- a/arch/arm/mach-pxa/viper.c +++ /dev/null @@ -1,1034 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * 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. - */ - -#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/platform_data/i2c-gpio.h> -#include <linux/gpio/machine.h> -#include <linux/platform_data/i2c-pxa.h> -#include <linux/serial_8250.h> -#include <linux/smc91x.h> -#include <linux/pwm.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 <linux/syscore_ops.h> - -#include "pxa25x.h" -#include <linux/platform_data/asoc-pxa.h> -#include <linux/platform_data/video-pxafb.h> -#include "regs-uart.h" -#include "viper-pcmcia.h" -#include "viper.h" - -#include <asm/setup.h> -#include <asm/mach-types.h> -#include <asm/irq.h> -#include <linux/sizes.h> -#include <asm/system_info.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 system core operations. */ -static int viper_cpu_suspend(void) -{ - viper_icr_set_bit(VIPER_ICR_R_DIS); - return 0; -} - -static void viper_cpu_resume(void) -{ - viper_icr_clear_bit(VIPER_ICR_R_DIS); -} - -static struct syscore_ops viper_cpu_syscore_ops = { - .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(struct irq_desc *desc) -{ - unsigned int irq; - 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); - irq_set_chip_and_handler(isa_irq, &viper_irq_chip, - handle_edge_irq); - irq_clear_status_flags(isa_irq, IRQ_NOREQUEST | IRQ_NOPROBE); - } - - irq_set_chained_handler(gpio_to_irq(VIPER_CPLD_GPIO), - viper_irq_handler); - irq_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 struct pwm_lookup viper_pwm_lookup[] = { - PWM_LOOKUP("pxa25x-pwm.0", 0, "pwm-backlight.0", NULL, 1000000, - PWM_POLARITY_NORMAL), -}; - -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 = { - .max_brightness = 100, - .dft_brightness = 100, - .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 = PXA_GPIO_TO_IRQ(VIPER_ETH_GPIO), - .end = PXA_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 gpiod_lookup_table viper_i2c_gpiod_table = { - .dev_id = "i2c-gpio.1", - .table = { - GPIO_LOOKUP_IDX("gpio-pxa", VIPER_RTC_I2C_SDA_GPIO, - NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), - GPIO_LOOKUP_IDX("gpio-pxa", VIPER_RTC_I2C_SCL_GPIO, - NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), - }, -}; - -static struct i2c_gpio_platform_data i2c_bus_data = { - .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 = PXA_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 = PXA_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 = PXA_GPIO_TO_IRQ(VIPER_USB_GPIO), - .end = PXA_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) -{ - return kstrtoul(str, 10, &viper_tpm) >= 0; -} - -__setup("tpm=", viper_tpm_setup); - -struct gpiod_lookup_table viper_tpm_i2c_gpiod_table = { - .dev_id = "i2c-gpio.2", - .table = { - GPIO_LOOKUP_IDX("gpio-pxa", VIPER_TPM_I2C_SDA_GPIO, - NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), - GPIO_LOOKUP_IDX("gpio-pxa", VIPER_TPM_I2C_SCL_GPIO, - NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), - }, -}; - -static void __init viper_tpm_init(void) -{ - struct platform_device *tpm_device; - struct i2c_gpio_platform_data i2c_tpm_data = { - .udelay = 10, - .timeout = HZ, - }; - char *errstr; - - /* Allocate TPM i2c bus if requested */ - if (!viper_tpm) - return; - - gpiod_add_lookup_table(&viper_tpm_i2c_gpiod_table); - 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(pxa25x_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; - 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(); - - pxa_set_fb_info(NULL, &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); - gpiod_add_lookup_table(&viper_i2c_gpiod_table); - pwm_add_table(viper_pwm_lookup, ARRAY_SIZE(viper_pwm_lookup)); - platform_add_devices(viper_devs, ARRAY_SIZE(viper_devs)); - - viper_init_vcore_gpios(); - viper_init_cpufreq(); - - register_syscore_ops(&viper_cpu_syscore_ops); - - 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, - }, - { - /* - * ISA I/O space mapping: - * - ports 0x0000-0x0fff are PC/104 - * - ports 0x10000-0x10fff are PCMCIA slot 1 - * - ports 0x11000-0x11fff are PC/104 - */ - .virtual = PCI_IO_VIRT_BASE, - .pfn = __phys_to_pfn(0x30000000), - .length = 0x1000, - .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> */ - .atag_offset = 0x100, - .map_io = viper_map_io, - .nr_irqs = PXA_NR_IRQS, - .init_irq = viper_init_irq, - .handle_irq = pxa25x_handle_irq, - .init_time = pxa_timer_init, - .init_machine = viper_init, - .restart = pxa_restart, -MACHINE_END |