diff options
Diffstat (limited to 'arch/x86/platform/mrst/mrst.c')
| -rw-r--r-- | arch/x86/platform/mrst/mrst.c | 1052 |
1 files changed, 0 insertions, 1052 deletions
diff --git a/arch/x86/platform/mrst/mrst.c b/arch/x86/platform/mrst/mrst.c deleted file mode 100644 index 3ca5957b7a3..00000000000 --- a/arch/x86/platform/mrst/mrst.c +++ /dev/null @@ -1,1052 +0,0 @@ -/* - * mrst.c: Intel Moorestown platform specific setup code - * - * (C) Copyright 2008 Intel Corporation - * Author: Jacob Pan (jacob.jun.pan@intel.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; version 2 - * of the License. - */ - -#define pr_fmt(fmt) "mrst: " fmt - -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/interrupt.h> -#include <linux/scatterlist.h> -#include <linux/sfi.h> -#include <linux/intel_pmic_gpio.h> -#include <linux/spi/spi.h> -#include <linux/i2c.h> -#include <linux/platform_data/pca953x.h> -#include <linux/gpio_keys.h> -#include <linux/input.h> -#include <linux/platform_device.h> -#include <linux/irq.h> -#include <linux/module.h> -#include <linux/notifier.h> -#include <linux/mfd/intel_msic.h> -#include <linux/gpio.h> -#include <linux/i2c/tc35876x.h> - -#include <asm/setup.h> -#include <asm/mpspec_def.h> -#include <asm/hw_irq.h> -#include <asm/apic.h> -#include <asm/io_apic.h> -#include <asm/mrst.h> -#include <asm/mrst-vrtc.h> -#include <asm/io.h> -#include <asm/i8259.h> -#include <asm/intel_scu_ipc.h> -#include <asm/apb_timer.h> -#include <asm/reboot.h> - -/* - * the clockevent devices on Moorestown/Medfield can be APBT or LAPIC clock, - * cmdline option x86_mrst_timer can be used to override the configuration - * to prefer one or the other. - * at runtime, there are basically three timer configurations: - * 1. per cpu apbt clock only - * 2. per cpu always-on lapic clocks only, this is Penwell/Medfield only - * 3. per cpu lapic clock (C3STOP) and one apbt clock, with broadcast. - * - * by default (without cmdline option), platform code first detects cpu type - * to see if we are on lincroft or penwell, then set up both lapic or apbt - * clocks accordingly. - * i.e. by default, medfield uses configuration #2, moorestown uses #1. - * config #3 is supported but not recommended on medfield. - * - * rating and feature summary: - * lapic (with C3STOP) --------- 100 - * apbt (always-on) ------------ 110 - * lapic (always-on,ARAT) ------ 150 - */ - -enum mrst_timer_options mrst_timer_options; - -static u32 sfi_mtimer_usage[SFI_MTMR_MAX_NUM]; -static struct sfi_timer_table_entry sfi_mtimer_array[SFI_MTMR_MAX_NUM]; -enum mrst_cpu_type __mrst_cpu_chip; -EXPORT_SYMBOL_GPL(__mrst_cpu_chip); - -int sfi_mtimer_num; - -struct sfi_rtc_table_entry sfi_mrtc_array[SFI_MRTC_MAX]; -EXPORT_SYMBOL_GPL(sfi_mrtc_array); -int sfi_mrtc_num; - -static void mrst_power_off(void) -{ -} - -static void mrst_reboot(void) -{ - intel_scu_ipc_simple_command(IPCMSG_COLD_BOOT, 0); -} - -/* parse all the mtimer info to a static mtimer array */ -static int __init sfi_parse_mtmr(struct sfi_table_header *table) -{ - struct sfi_table_simple *sb; - struct sfi_timer_table_entry *pentry; - struct mpc_intsrc mp_irq; - int totallen; - - sb = (struct sfi_table_simple *)table; - if (!sfi_mtimer_num) { - sfi_mtimer_num = SFI_GET_NUM_ENTRIES(sb, - struct sfi_timer_table_entry); - pentry = (struct sfi_timer_table_entry *) sb->pentry; - totallen = sfi_mtimer_num * sizeof(*pentry); - memcpy(sfi_mtimer_array, pentry, totallen); - } - - pr_debug("SFI MTIMER info (num = %d):\n", sfi_mtimer_num); - pentry = sfi_mtimer_array; - for (totallen = 0; totallen < sfi_mtimer_num; totallen++, pentry++) { - pr_debug("timer[%d]: paddr = 0x%08x, freq = %dHz," - " irq = %d\n", totallen, (u32)pentry->phys_addr, - pentry->freq_hz, pentry->irq); - if (!pentry->irq) - continue; - mp_irq.type = MP_INTSRC; - mp_irq.irqtype = mp_INT; -/* triggering mode edge bit 2-3, active high polarity bit 0-1 */ - mp_irq.irqflag = 5; - mp_irq.srcbus = MP_BUS_ISA; - mp_irq.srcbusirq = pentry->irq; /* IRQ */ - mp_irq.dstapic = MP_APIC_ALL; - mp_irq.dstirq = pentry->irq; - mp_save_irq(&mp_irq); - } - - return 0; -} - -struct sfi_timer_table_entry *sfi_get_mtmr(int hint) -{ - int i; - if (hint < sfi_mtimer_num) { - if (!sfi_mtimer_usage[hint]) { - pr_debug("hint taken for timer %d irq %d\n",\ - hint, sfi_mtimer_array[hint].irq); - sfi_mtimer_usage[hint] = 1; - return &sfi_mtimer_array[hint]; - } - } - /* take the first timer available */ - for (i = 0; i < sfi_mtimer_num;) { - if (!sfi_mtimer_usage[i]) { - sfi_mtimer_usage[i] = 1; - return &sfi_mtimer_array[i]; - } - i++; - } - return NULL; -} - -void sfi_free_mtmr(struct sfi_timer_table_entry *mtmr) -{ - int i; - for (i = 0; i < sfi_mtimer_num;) { - if (mtmr->irq == sfi_mtimer_array[i].irq) { - sfi_mtimer_usage[i] = 0; - return; - } - i++; - } -} - -/* parse all the mrtc info to a global mrtc array */ -int __init sfi_parse_mrtc(struct sfi_table_header *table) -{ - struct sfi_table_simple *sb; - struct sfi_rtc_table_entry *pentry; - struct mpc_intsrc mp_irq; - - int totallen; - - sb = (struct sfi_table_simple *)table; - if (!sfi_mrtc_num) { - sfi_mrtc_num = SFI_GET_NUM_ENTRIES(sb, - struct sfi_rtc_table_entry); - pentry = (struct sfi_rtc_table_entry *)sb->pentry; - totallen = sfi_mrtc_num * sizeof(*pentry); - memcpy(sfi_mrtc_array, pentry, totallen); - } - - pr_debug("SFI RTC info (num = %d):\n", sfi_mrtc_num); - pentry = sfi_mrtc_array; - for (totallen = 0; totallen < sfi_mrtc_num; totallen++, pentry++) { - pr_debug("RTC[%d]: paddr = 0x%08x, irq = %d\n", - totallen, (u32)pentry->phys_addr, pentry->irq); - mp_irq.type = MP_INTSRC; - mp_irq.irqtype = mp_INT; - mp_irq.irqflag = 0xf; /* level trigger and active low */ - mp_irq.srcbus = MP_BUS_ISA; - mp_irq.srcbusirq = pentry->irq; /* IRQ */ - mp_irq.dstapic = MP_APIC_ALL; - mp_irq.dstirq = pentry->irq; - mp_save_irq(&mp_irq); - } - return 0; -} - -static unsigned long __init mrst_calibrate_tsc(void) -{ - unsigned long fast_calibrate; - u32 lo, hi, ratio, fsb; - - rdmsr(MSR_IA32_PERF_STATUS, lo, hi); - pr_debug("IA32 perf status is 0x%x, 0x%0x\n", lo, hi); - ratio = (hi >> 8) & 0x1f; - pr_debug("ratio is %d\n", ratio); - if (!ratio) { - pr_err("read a zero ratio, should be incorrect!\n"); - pr_err("force tsc ratio to 16 ...\n"); - ratio = 16; - } - rdmsr(MSR_FSB_FREQ, lo, hi); - if ((lo & 0x7) == 0x7) - fsb = PENWELL_FSB_FREQ_83SKU; - else - fsb = PENWELL_FSB_FREQ_100SKU; - fast_calibrate = ratio * fsb; - pr_debug("read penwell tsc %lu khz\n", fast_calibrate); - lapic_timer_frequency = fsb * 1000 / HZ; - /* mark tsc clocksource as reliable */ - set_cpu_cap(&boot_cpu_data, X86_FEATURE_TSC_RELIABLE); - - if (fast_calibrate) - return fast_calibrate; - - return 0; -} - -static void __init mrst_time_init(void) -{ - sfi_table_parse(SFI_SIG_MTMR, NULL, NULL, sfi_parse_mtmr); - switch (mrst_timer_options) { - case MRST_TIMER_APBT_ONLY: - break; - case MRST_TIMER_LAPIC_APBT: - x86_init.timers.setup_percpu_clockev = setup_boot_APIC_clock; - x86_cpuinit.setup_percpu_clockev = setup_secondary_APIC_clock; - break; - default: - if (!boot_cpu_has(X86_FEATURE_ARAT)) - break; - x86_init.timers.setup_percpu_clockev = setup_boot_APIC_clock; - x86_cpuinit.setup_percpu_clockev = setup_secondary_APIC_clock; - return; - } - /* we need at least one APB timer */ - pre_init_apic_IRQ0(); - apbt_time_init(); -} - -static void mrst_arch_setup(void) -{ - if (boot_cpu_data.x86 == 6 && boot_cpu_data.x86_model == 0x27) - __mrst_cpu_chip = MRST_CPU_CHIP_PENWELL; - else { - pr_err("Unknown Intel MID CPU (%d:%d), default to Penwell\n", - boot_cpu_data.x86, boot_cpu_data.x86_model); - __mrst_cpu_chip = MRST_CPU_CHIP_PENWELL; - } -} - -/* MID systems don't have i8042 controller */ -static int mrst_i8042_detect(void) -{ - return 0; -} - -/* - * Moorestown does not have external NMI source nor port 0x61 to report - * NMI status. The possible NMI sources are from pmu as a result of NMI - * watchdog or lock debug. Reading io port 0x61 results in 0xff which - * misled NMI handler. - */ -static unsigned char mrst_get_nmi_reason(void) -{ - return 0; -} - -/* - * Moorestown specific x86_init function overrides and early setup - * calls. - */ -void __init x86_mrst_early_setup(void) -{ - x86_init.resources.probe_roms = x86_init_noop; - x86_init.resources.reserve_resources = x86_init_noop; - - x86_init.timers.timer_init = mrst_time_init; - x86_init.timers.setup_percpu_clockev = x86_init_noop; - - x86_init.irqs.pre_vector_init = x86_init_noop; - - x86_init.oem.arch_setup = mrst_arch_setup; - - x86_cpuinit.setup_percpu_clockev = apbt_setup_secondary_clock; - - x86_platform.calibrate_tsc = mrst_calibrate_tsc; - x86_platform.i8042_detect = mrst_i8042_detect; - x86_init.timers.wallclock_init = mrst_rtc_init; - x86_platform.get_nmi_reason = mrst_get_nmi_reason; - - x86_init.pci.init = pci_mrst_init; - x86_init.pci.fixup_irqs = x86_init_noop; - - legacy_pic = &null_legacy_pic; - - /* Moorestown specific power_off/restart method */ - pm_power_off = mrst_power_off; - machine_ops.emergency_restart = mrst_reboot; - - /* Avoid searching for BIOS MP tables */ - x86_init.mpparse.find_smp_config = x86_init_noop; - x86_init.mpparse.get_smp_config = x86_init_uint_noop; - set_bit(MP_BUS_ISA, mp_bus_not_pci); -} - -/* - * if user does not want to use per CPU apb timer, just give it a lower rating - * than local apic timer and skip the late per cpu timer init. - */ -static inline int __init setup_x86_mrst_timer(char *arg) -{ - if (!arg) - return -EINVAL; - - if (strcmp("apbt_only", arg) == 0) - mrst_timer_options = MRST_TIMER_APBT_ONLY; - else if (strcmp("lapic_and_apbt", arg) == 0) - mrst_timer_options = MRST_TIMER_LAPIC_APBT; - else { - pr_warning("X86 MRST timer option %s not recognised" - " use x86_mrst_timer=apbt_only or lapic_and_apbt\n", - arg); - return -EINVAL; - } - return 0; -} -__setup("x86_mrst_timer=", setup_x86_mrst_timer); - -/* - * Parsing GPIO table first, since the DEVS table will need this table - * to map the pin name to the actual pin. - */ -static struct sfi_gpio_table_entry *gpio_table; -static int gpio_num_entry; - -static int __init sfi_parse_gpio(struct sfi_table_header *table) -{ - struct sfi_table_simple *sb; - struct sfi_gpio_table_entry *pentry; - int num, i; - - if (gpio_table) - return 0; - sb = (struct sfi_table_simple *)table; - num = SFI_GET_NUM_ENTRIES(sb, struct sfi_gpio_table_entry); - pentry = (struct sfi_gpio_table_entry *)sb->pentry; - - gpio_table = kmalloc(num * sizeof(*pentry), GFP_KERNEL); - if (!gpio_table) - return -1; - memcpy(gpio_table, pentry, num * sizeof(*pentry)); - gpio_num_entry = num; - - pr_debug("GPIO pin info:\n"); - for (i = 0; i < num; i++, pentry++) - pr_debug("info[%2d]: controller = %16.16s, pin_name = %16.16s," - " pin = %d\n", i, - pentry->controller_name, - pentry->pin_name, - pentry->pin_no); - return 0; -} - -static int get_gpio_by_name(const char *name) -{ - struct sfi_gpio_table_entry *pentry = gpio_table; - int i; - - if (!pentry) - return -1; - for (i = 0; i < gpio_num_entry; i++, pentry++) { - if (!strncmp(name, pentry->pin_name, SFI_NAME_LEN)) - return pentry->pin_no; - } - return -1; -} - -/* - * Here defines the array of devices platform data that IAFW would export - * through SFI "DEVS" table, we use name and type to match the device and - * its platform data. - */ -struct devs_id { - char name[SFI_NAME_LEN + 1]; - u8 type; - u8 delay; - void *(*get_platform_data)(void *info); -}; - -/* the offset for the mapping of global gpio pin to irq */ -#define MRST_IRQ_OFFSET 0x100 - -static void __init *pmic_gpio_platform_data(void *info) -{ - static struct intel_pmic_gpio_platform_data pmic_gpio_pdata; - int gpio_base = get_gpio_by_name("pmic_gpio_base"); - - if (gpio_base == -1) - gpio_base = 64; - pmic_gpio_pdata.gpio_base = gpio_base; - pmic_gpio_pdata.irq_base = gpio_base + MRST_IRQ_OFFSET; - pmic_gpio_pdata.gpiointr = 0xffffeff8; - - return &pmic_gpio_pdata; -} - -static void __init *max3111_platform_data(void *info) -{ - struct spi_board_info *spi_info = info; - int intr = get_gpio_by_name("max3111_int"); - - spi_info->mode = SPI_MODE_0; - if (intr == -1) - return NULL; - spi_info->irq = intr + MRST_IRQ_OFFSET; - return NULL; -} - -/* we have multiple max7315 on the board ... */ -#define MAX7315_NUM 2 -static void __init *max7315_platform_data(void *info) -{ - static struct pca953x_platform_data max7315_pdata[MAX7315_NUM]; - static int nr; - struct pca953x_platform_data *max7315 = &max7315_pdata[nr]; - struct i2c_board_info *i2c_info = info; - int gpio_base, intr; - char base_pin_name[SFI_NAME_LEN + 1]; - char intr_pin_name[SFI_NAME_LEN + 1]; - - if (nr == MAX7315_NUM) { - pr_err("too many max7315s, we only support %d\n", - MAX7315_NUM); - return NULL; - } - /* we have several max7315 on the board, we only need load several - * instances of the same pca953x driver to cover them - */ - strcpy(i2c_info->type, "max7315"); - if (nr++) { - sprintf(base_pin_name, "max7315_%d_base", nr); - sprintf(intr_pin_name, "max7315_%d_int", nr); - } else { - strcpy(base_pin_name, "max7315_base"); - strcpy(intr_pin_name, "max7315_int"); - } - - gpio_base = get_gpio_by_name(base_pin_name); - intr = get_gpio_by_name(intr_pin_name); - - if (gpio_base == -1) - return NULL; - max7315->gpio_base = gpio_base; - if (intr != -1) { - i2c_info->irq = intr + MRST_IRQ_OFFSET; - max7315->irq_base = gpio_base + MRST_IRQ_OFFSET; - } else { - i2c_info->irq = -1; - max7315->irq_base = -1; - } - return max7315; -} - -static void *tca6416_platform_data(void *info) -{ - static struct pca953x_platform_data tca6416; - struct i2c_board_info *i2c_info = info; - int gpio_base, intr; - char base_pin_name[SFI_NAME_LEN + 1]; - char intr_pin_name[SFI_NAME_LEN + 1]; - - strcpy(i2c_info->type, "tca6416"); - strcpy(base_pin_name, "tca6416_base"); - strcpy(intr_pin_name, "tca6416_int"); - - gpio_base = get_gpio_by_name(base_pin_name); - intr = get_gpio_by_name(intr_pin_name); - - if (gpio_base == -1) - return NULL; - tca6416.gpio_base = gpio_base; - if (intr != -1) { - i2c_info->irq = intr + MRST_IRQ_OFFSET; - tca6416.irq_base = gpio_base + MRST_IRQ_OFFSET; - } else { - i2c_info->irq = -1; - tca6416.irq_base = -1; - } - return &tca6416; -} - -static void *mpu3050_platform_data(void *info) -{ - struct i2c_board_info *i2c_info = info; - int intr = get_gpio_by_name("mpu3050_int"); - - if (intr == -1) - return NULL; - - i2c_info->irq = intr + MRST_IRQ_OFFSET; - return NULL; -} - -static void __init *emc1403_platform_data(void *info) -{ - static short intr2nd_pdata; - struct i2c_board_info *i2c_info = info; - int intr = get_gpio_by_name("thermal_int"); - int intr2nd = get_gpio_by_name("thermal_alert"); - - if (intr == -1 || intr2nd == -1) - return NULL; - - i2c_info->irq = intr + MRST_IRQ_OFFSET; - intr2nd_pdata = intr2nd + MRST_IRQ_OFFSET; - - return &intr2nd_pdata; -} - -static void __init *lis331dl_platform_data(void *info) -{ - static short intr2nd_pdata; - struct i2c_board_info *i2c_info = info; - int intr = get_gpio_by_name("accel_int"); - int intr2nd = get_gpio_by_name("accel_2"); - - if (intr == -1 || intr2nd == -1) - return NULL; - - i2c_info->irq = intr + MRST_IRQ_OFFSET; - intr2nd_pdata = intr2nd + MRST_IRQ_OFFSET; - - return &intr2nd_pdata; -} - -static void __init *no_platform_data(void *info) -{ - return NULL; -} - -static struct resource msic_resources[] = { - { - .start = INTEL_MSIC_IRQ_PHYS_BASE, - .end = INTEL_MSIC_IRQ_PHYS_BASE + 64 - 1, - .flags = IORESOURCE_MEM, - }, -}; - -static struct intel_msic_platform_data msic_pdata; - -static struct platform_device msic_device = { - .name = "intel_msic", - .id = -1, - .dev = { - .platform_data = &msic_pdata, - }, - .num_resources = ARRAY_SIZE(msic_resources), - .resource = msic_resources, -}; - -static inline bool mrst_has_msic(void) -{ - return mrst_identify_cpu() == MRST_CPU_CHIP_PENWELL; -} - -static int msic_scu_status_change(struct notifier_block *nb, - unsigned long code, void *data) -{ - if (code == SCU_DOWN) { - platform_device_unregister(&msic_device); - return 0; - } - - return platform_device_register(&msic_device); -} - -static int __init msic_init(void) -{ - static struct notifier_block msic_scu_notifier = { - .notifier_call = msic_scu_status_change, - }; - - /* - * We need to be sure that the SCU IPC is ready before MSIC device - * can be registered. - */ - if (mrst_has_msic()) - intel_scu_notifier_add(&msic_scu_notifier); - - return 0; -} -arch_initcall(msic_init); - -/* - * msic_generic_platform_data - sets generic platform data for the block - * @info: pointer to the SFI device table entry for this block - * @block: MSIC block - * - * Function sets IRQ number from the SFI table entry for given device to - * the MSIC platform data. - */ -static void *msic_generic_platform_data(void *info, enum intel_msic_block block) -{ - struct sfi_device_table_entry *entry = info; - - BUG_ON(block < 0 || block >= INTEL_MSIC_BLOCK_LAST); - msic_pdata.irq[block] = entry->irq; - - return no_platform_data(info); -} - -static void *msic_battery_platform_data(void *info) -{ - return msic_generic_platform_data(info, INTEL_MSIC_BLOCK_BATTERY); -} - -static void *msic_gpio_platform_data(void *info) -{ - static struct intel_msic_gpio_pdata pdata; - int gpio = get_gpio_by_name("msic_gpio_base"); - - if (gpio < 0) - return NULL; - - pdata.gpio_base = gpio; - msic_pdata.gpio = &pdata; - - return msic_generic_platform_data(info, INTEL_MSIC_BLOCK_GPIO); -} - -static void *msic_audio_platform_data(void *info) -{ - struct platform_device *pdev; - - pdev = platform_device_register_simple("sst-platform", -1, NULL, 0); - if (IS_ERR(pdev)) { - pr_err("failed to create audio platform device\n"); - return NULL; - } - - return msic_generic_platform_data(info, INTEL_MSIC_BLOCK_AUDIO); -} - -static void *msic_power_btn_platform_data(void *info) -{ - return msic_generic_platform_data(info, INTEL_MSIC_BLOCK_POWER_BTN); -} - -static void *msic_ocd_platform_data(void *info) -{ - static struct intel_msic_ocd_pdata pdata; - int gpio = get_gpio_by_name("ocd_gpio"); - - if (gpio < 0) - return NULL; - - pdata.gpio = gpio; - msic_pdata.ocd = &pdata; - - return msic_generic_platform_data(info, INTEL_MSIC_BLOCK_OCD); -} - -static void *msic_thermal_platform_data(void *info) -{ - return msic_generic_platform_data(info, INTEL_MSIC_BLOCK_THERMAL); -} - -/* tc35876x DSI-LVDS bridge chip and panel platform data */ -static void *tc35876x_platform_data(void *data) -{ - static struct tc35876x_platform_data pdata; - - /* gpio pins set to -1 will not be used by the driver */ - pdata.gpio_bridge_reset = get_gpio_by_name("LCMB_RXEN"); - pdata.gpio_panel_bl_en = get_gpio_by_name("6S6P_BL_EN"); - pdata.gpio_panel_vadd = get_gpio_by_name("EN_VREG_LCD_V3P3"); - - return &pdata; -} - -static const struct devs_id __initconst device_ids[] = { - {"bma023", SFI_DEV_TYPE_I2C, 1, &no_platform_data}, - {"pmic_gpio", SFI_DEV_TYPE_SPI, 1, &pmic_gpio_platform_data}, - {"pmic_gpio", SFI_DEV_TYPE_IPC, 1, &pmic_gpio_platform_data}, - {"spi_max3111", SFI_DEV_TYPE_SPI, 0, &max3111_platform_data}, - {"i2c_max7315", SFI_DEV_TYPE_I2C, 1, &max7315_platform_data}, - {"i2c_max7315_2", SFI_DEV_TYPE_I2C, 1, &max7315_platform_data}, - {"tca6416", SFI_DEV_TYPE_I2C, 1, &tca6416_platform_data}, - {"emc1403", SFI_DEV_TYPE_I2C, 1, &emc1403_platform_data}, - {"i2c_accel", SFI_DEV_TYPE_I2C, 0, &lis331dl_platform_data}, - {"pmic_audio", SFI_DEV_TYPE_IPC, 1, &no_platform_data}, - {"mpu3050", SFI_DEV_TYPE_I2C, 1, &mpu3050_platform_data}, - {"i2c_disp_brig", SFI_DEV_TYPE_I2C, 0, &tc35876x_platform_data}, - - /* MSIC subdevices */ - {"msic_battery", SFI_DEV_TYPE_IPC, 1, &msic_battery_platform_data}, - {"msic_gpio", SFI_DEV_TYPE_IPC, 1, &msic_gpio_platform_data}, - {"msic_audio", SFI_DEV_TYPE_IPC, 1, &msic_audio_platform_data}, - {"msic_power_btn", SFI_DEV_TYPE_IPC, 1, &msic_power_btn_platform_data}, - {"msic_ocd", SFI_DEV_TYPE_IPC, 1, &msic_ocd_platform_data}, - {"msic_thermal", SFI_DEV_TYPE_IPC, 1, &msic_thermal_platform_data}, - - {}, -}; - -#define MAX_IPCDEVS 24 -static struct platform_device *ipc_devs[MAX_IPCDEVS]; -static int ipc_next_dev; - -#define MAX_SCU_SPI 24 -static struct spi_board_info *spi_devs[MAX_SCU_SPI]; -static int spi_next_dev; - -#define MAX_SCU_I2C 24 -static struct i2c_board_info *i2c_devs[MAX_SCU_I2C]; -static int i2c_bus[MAX_SCU_I2C]; -static int i2c_next_dev; - -static void __init intel_scu_device_register(struct platform_device *pdev) -{ - if(ipc_next_dev == MAX_IPCDEVS) - pr_err("too many SCU IPC devices"); - else - ipc_devs[ipc_next_dev++] = pdev; -} - -static void __init intel_scu_spi_device_register(struct spi_board_info *sdev) -{ - struct spi_board_info *new_dev; - - if (spi_next_dev == MAX_SCU_SPI) { - pr_err("too many SCU SPI devices"); - return; - } - - new_dev = kzalloc(sizeof(*sdev), GFP_KERNEL); - if (!new_dev) { - pr_err("failed to alloc mem for delayed spi dev %s\n", - sdev->modalias); - return; - } - memcpy(new_dev, sdev, sizeof(*sdev)); - - spi_devs[spi_next_dev++] = new_dev; -} - -static void __init intel_scu_i2c_device_register(int bus, - struct i2c_board_info *idev) -{ - struct i2c_board_info *new_dev; - - if (i2c_next_dev == MAX_SCU_I2C) { - pr_err("too many SCU I2C devices"); - return; - } - - new_dev = kzalloc(sizeof(*idev), GFP_KERNEL); - if (!new_dev) { - pr_err("failed to alloc mem for delayed i2c dev %s\n", - idev->type); - return; - } - memcpy(new_dev, idev, sizeof(*idev)); - - i2c_bus[i2c_next_dev] = bus; - i2c_devs[i2c_next_dev++] = new_dev; -} - -BLOCKING_NOTIFIER_HEAD(intel_scu_notifier); -EXPORT_SYMBOL_GPL(intel_scu_notifier); - -/* Called by IPC driver */ -void intel_scu_devices_create(void) -{ - int i; - - for (i = 0; i < ipc_next_dev; i++) - platform_device_add(ipc_devs[i]); - - for (i = 0; i < spi_next_dev; i++) - spi_register_board_info(spi_devs[i], 1); - - for (i = 0; i < i2c_next_dev; i++) { - struct i2c_adapter *adapter; - struct i2c_client *client; - - adapter = i2c_get_adapter(i2c_bus[i]); - if (adapter) { - client = i2c_new_device(adapter, i2c_devs[i]); - if (!client) - pr_err("can't create i2c device %s\n", - i2c_devs[i]->type); - } else - i2c_register_board_info(i2c_bus[i], i2c_devs[i], 1); - } - intel_scu_notifier_post(SCU_AVAILABLE, NULL); -} -EXPORT_SYMBOL_GPL(intel_scu_devices_create); - -/* Called by IPC driver */ -void intel_scu_devices_destroy(void) -{ - int i; - - intel_scu_notifier_post(SCU_DOWN, NULL); - - for (i = 0; i < ipc_next_dev; i++) - platform_device_del(ipc_devs[i]); -} -EXPORT_SYMBOL_GPL(intel_scu_devices_destroy); - -static void __init install_irq_resource(struct platform_device *pdev, int irq) -{ - /* Single threaded */ - static struct resource __initdata res = { - .name = "IRQ", - .flags = IORESOURCE_IRQ, - }; - res.start = irq; - platform_device_add_resources(pdev, &res, 1); -} - -static void __init sfi_handle_ipc_dev(struct sfi_device_table_entry *entry) -{ - const struct devs_id *dev = device_ids; - struct platform_device *pdev; - void *pdata = NULL; - - while (dev->name[0]) { - if (dev->type == SFI_DEV_TYPE_IPC && - !strncmp(dev->name, entry->name, SFI_NAME_LEN)) { - pdata = dev->get_platform_data(entry); - break; - } - dev++; - } - - /* - * On Medfield the platform device creation is handled by the MSIC - * MFD driver so we don't need to do it here. - */ - if (mrst_has_msic()) - return; - - pdev = platform_device_alloc(entry->name, 0); - if (pdev == NULL) { - pr_err("out of memory for SFI platform device '%s'.\n", - entry->name); - return; - } - install_irq_resource(pdev, entry->irq); - - pdev->dev.platform_data = pdata; - intel_scu_device_register(pdev); -} - -static void __init sfi_handle_spi_dev(struct spi_board_info *spi_info) -{ - const struct devs_id *dev = device_ids; - void *pdata = NULL; - - while (dev->name[0]) { - if (dev->type == SFI_DEV_TYPE_SPI && - !strncmp(dev->name, spi_info->modalias, SFI_NAME_LEN)) { - pdata = dev->get_platform_data(spi_info); - break; - } - dev++; - } - spi_info->platform_data = pdata; - if (dev->delay) - intel_scu_spi_device_register(spi_info); - else - spi_register_board_info(spi_info, 1); -} - -static void __init sfi_handle_i2c_dev(int bus, struct i2c_board_info *i2c_info) -{ - const struct devs_id *dev = device_ids; - void *pdata = NULL; - - while (dev->name[0]) { - if (dev->type == SFI_DEV_TYPE_I2C && - !strncmp(dev->name, i2c_info->type, SFI_NAME_LEN)) { - pdata = dev->get_platform_data(i2c_info); - break; - } - dev++; - } - i2c_info->platform_data = pdata; - - if (dev->delay) - intel_scu_i2c_device_register(bus, i2c_info); - else - i2c_register_board_info(bus, i2c_info, 1); - } - - -static int __init sfi_parse_devs(struct sfi_table_header *table) -{ - struct sfi_table_simple *sb; - struct sfi_device_table_entry *pentry; - struct spi_board_info spi_info; - struct i2c_board_info i2c_info; - int num, i, bus; - int ioapic; - struct io_apic_irq_attr irq_attr; - - sb = (struct sfi_table_simple *)table; - num = SFI_GET_NUM_ENTRIES(sb, struct sfi_device_table_entry); - pentry = (struct sfi_device_table_entry *)sb->pentry; - - for (i = 0; i < num; i++, pentry++) { - int irq = pentry->irq; - - if (irq != (u8)0xff) { /* native RTE case */ - /* these SPI2 devices are not exposed to system as PCI - * devices, but they have separate RTE entry in IOAPIC - * so we have to enable them one by one here - */ - ioapic = mp_find_ioapic(irq); - irq_attr.ioapic = ioapic; - irq_attr.ioapic_pin = irq; - irq_attr.trigger = 1; - irq_attr.polarity = 1; - io_apic_set_pci_routing(NULL, irq, &irq_attr); - } else - irq = 0; /* No irq */ - - switch (pentry->type) { - case SFI_DEV_TYPE_IPC: - pr_debug("info[%2d]: IPC bus, name = %16.16s, " - "irq = 0x%2x\n", i, pentry->name, pentry->irq); - sfi_handle_ipc_dev(pentry); - break; - case SFI_DEV_TYPE_SPI: - memset(&spi_info, 0, sizeof(spi_info)); - strncpy(spi_info.modalias, pentry->name, SFI_NAME_LEN); - spi_info.irq = irq; - spi_info.bus_num = pentry->host_num; - spi_info.chip_select = pentry->addr; - spi_info.max_speed_hz = pentry->max_freq; - pr_debug("info[%2d]: SPI bus = %d, name = %16.16s, " - "irq = 0x%2x, max_freq = %d, cs = %d\n", i, - spi_info.bus_num, - spi_info.modalias, - spi_info.irq, - spi_info.max_speed_hz, - spi_info.chip_select); - sfi_handle_spi_dev(&spi_info); - break; - case SFI_DEV_TYPE_I2C: - memset(&i2c_info, 0, sizeof(i2c_info)); - bus = pentry->host_num; - strncpy(i2c_info.type, pentry->name, SFI_NAME_LEN); - i2c_info.irq = irq; - i2c_info.addr = pentry->addr; - pr_debug("info[%2d]: I2C bus = %d, name = %16.16s, " - "irq = 0x%2x, addr = 0x%x\n", i, bus, - i2c_info.type, - i2c_info.irq, - i2c_info.addr); - sfi_handle_i2c_dev(bus, &i2c_info); - break; - case SFI_DEV_TYPE_UART: - case SFI_DEV_TYPE_HSI: - default: - ; - } - } - return 0; -} - -static int __init mrst_platform_init(void) -{ - sfi_table_parse(SFI_SIG_GPIO, NULL, NULL, sfi_parse_gpio); - sfi_table_parse(SFI_SIG_DEVS, NULL, NULL, sfi_parse_devs); - return 0; -} -arch_initcall(mrst_platform_init); - -/* - * we will search these buttons in SFI GPIO table (by name) - * and register them dynamically. Please add all possible - * buttons here, we will shrink them if no GPIO found. - */ -static struct gpio_keys_button gpio_button[] = { - {KEY_POWER, -1, 1, "power_btn", EV_KEY, 0, 3000}, - {KEY_PROG1, -1, 1, "prog_btn1", EV_KEY, 0, 20}, - {KEY_PROG2, -1, 1, "prog_btn2", EV_KEY, 0, 20}, - {SW_LID, -1, 1, "lid_switch", EV_SW, 0, 20}, - {KEY_VOLUMEUP, -1, 1, "vol_up", EV_KEY, 0, 20}, - {KEY_VOLUMEDOWN, -1, 1, "vol_down", EV_KEY, 0, 20}, - {KEY_CAMERA, -1, 1, "camera_full", EV_KEY, 0, 20}, - {KEY_CAMERA_FOCUS, -1, 1, "camera_half", EV_KEY, 0, 20}, - {SW_KEYPAD_SLIDE, -1, 1, "MagSw1", EV_SW, 0, 20}, - {SW_KEYPAD_SLIDE, -1, 1, "MagSw2", EV_SW, 0, 20}, -}; - -static struct gpio_keys_platform_data mrst_gpio_keys = { - .buttons = gpio_button, - .rep = 1, - .nbuttons = -1, /* will fill it after search */ -}; - -static struct platform_device pb_device = { - .name = "gpio-keys", - .id = -1, - .dev = { - .platform_data = &mrst_gpio_keys, - }, -}; - -/* - * Shrink the non-existent buttons, register the gpio button - * device if there is some - */ -static int __init pb_keys_init(void) -{ - struct gpio_keys_button *gb = gpio_button; - int i, num, good = 0; - - num = sizeof(gpio_button) / sizeof(struct gpio_keys_button); - for (i = 0; i < num; i++) { - gb[i].gpio = get_gpio_by_name(gb[i].desc); - pr_debug("info[%2d]: name = %s, gpio = %d\n", i, gb[i].desc, gb[i].gpio); - if (gb[i].gpio == -1) - continue; - - if (i != good) - gb[good] = gb[i]; - good++; - } - - if (good) { - mrst_gpio_keys.nbuttons = good; - return platform_device_register(&pb_device); - } - return 0; -} -late_initcall(pb_keys_init); |