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    Subject[PATCH v4 09/12] intel_mid: Moved SFI related code to sfi.c
    Date
    From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>

    Moved SFI specific parsing/handling code to sfi.c. This will enable us
    to reuse our intel-mid code for platforms that supports firmware
    interfaces other than SFI (like ACPI).

    Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
    Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
    ---
    arch/x86/include/asm/intel-mid.h | 1 +
    arch/x86/platform/intel-mid/Makefile | 2 +
    arch/x86/platform/intel-mid/intel-mid.c | 451 +----------------------------
    arch/x86/platform/intel-mid/sfi.c | 485 ++++++++++++++++++++++++++++++++
    4 files changed, 489 insertions(+), 450 deletions(-)
    create mode 100644 arch/x86/platform/intel-mid/sfi.c

    diff --git a/arch/x86/include/asm/intel-mid.h b/arch/x86/include/asm/intel-mid.h
    index ad236ae..3b0e7a7 100644
    --- a/arch/x86/include/asm/intel-mid.h
    +++ b/arch/x86/include/asm/intel-mid.h
    @@ -15,6 +15,7 @@

    extern int intel_mid_pci_init(void);
    extern int __init sfi_parse_mrtc(struct sfi_table_header *table);
    +extern int __init sfi_parse_mtmr(struct sfi_table_header *table);
    extern int sfi_mrtc_num;
    extern struct sfi_rtc_table_entry sfi_mrtc_array[];

    diff --git a/arch/x86/platform/intel-mid/Makefile b/arch/x86/platform/intel-mid/Makefile
    index de29635..b11e5b2 100644
    --- a/arch/x86/platform/intel-mid/Makefile
    +++ b/arch/x86/platform/intel-mid/Makefile
    @@ -1,3 +1,5 @@
    obj-$(CONFIG_X86_INTEL_MID) += intel-mid.o
    obj-$(CONFIG_X86_INTEL_MID) += intel_mid_vrtc.o
    obj-$(CONFIG_EARLY_PRINTK_INTEL_MID) += early_printk_intel_mid.o
    +# SFI specific code
    +obj-$(CONFIG_SFI) += sfi.o
    diff --git a/arch/x86/platform/intel-mid/intel-mid.c b/arch/x86/platform/intel-mid/intel-mid.c
    index 40a3ff8..4091569 100644
    --- a/arch/x86/platform/intel-mid/intel-mid.c
    +++ b/arch/x86/platform/intel-mid/intel-mid.c
    @@ -18,19 +18,9 @@
    #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>
    @@ -68,19 +58,11 @@

    enum intel_mid_timer_options intel_mid_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 intel_mid_cpu_type __intel_mid_cpu_chip;
    EXPORT_SYMBOL_GPL(__intel_mid_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 __init ipc_device_handler(struct sfi_device_table_entry *pentry,
    struct devs_id *dev);
    -
    static void intel_mid_power_off(void)
    {
    }
    @@ -90,114 +72,6 @@ static void intel_mid_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 intel_mid_calibrate_tsc(void)
    {
    unsigned long fast_calibrate;
    @@ -339,55 +213,6 @@ static inline int __init setup_x86_intel_mid_timer(char *arg)
    }
    __setup("x86_intel_mid_timer=", setup_x86_intel_mid_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;
    -}
    -
    /* the offset for the mapping of global gpio pin to irq */
    #define INTEL_MID_IRQ_OFFSET 0x100

    @@ -703,197 +528,6 @@ static const struct devs_id __initconst device_ids[] = {
    { 0 }
    };

    -#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 *pentry,
    - struct devs_id *dev)
    -{
    - struct platform_device *pdev;
    - void *pdata = NULL;
    -
    - pr_debug("IPC bus, name = %16.16s, irq = 0x%2x\n",
    - pentry->name, pentry->irq);
    - pdata = dev->get_platform_data(pentry);
    -
    - pdev = platform_device_alloc(pentry->name, 0);
    - if (pdev == NULL) {
    - pr_err("out of memory for SFI platform device '%s'.\n",
    - pentry->name);
    - return;
    - }
    - install_irq_resource(pdev, pentry->irq);
    -
    - pdev->dev.platform_data = pdata;
    - platform_device_add(pdev);
    -}
    -
    -static void __init sfi_handle_spi_dev(struct sfi_device_table_entry *pentry,
    - struct devs_id *dev)
    -{
    - struct spi_board_info spi_info;
    - void *pdata = NULL;
    -
    - memset(&spi_info, 0, sizeof(spi_info));
    - strncpy(spi_info.modalias, pentry->name, SFI_NAME_LEN);
    - spi_info.irq = ((pentry->irq == (u8)0xff) ? 0 : pentry->irq);
    - spi_info.bus_num = pentry->host_num;
    - spi_info.chip_select = pentry->addr;
    - spi_info.max_speed_hz = pentry->max_freq;
    - pr_debug("SPI bus=%d, name=%16.16s, irq=0x%2x, max_freq=%d, cs=%d\n",
    - spi_info.bus_num,
    - spi_info.modalias,
    - spi_info.irq,
    - spi_info.max_speed_hz,
    - spi_info.chip_select);
    -
    - pdata = dev->get_platform_data(&spi_info);
    -
    - 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(struct sfi_device_table_entry *pentry,
    - struct devs_id *dev)
    -{
    - struct i2c_board_info i2c_info;
    - void *pdata = NULL;
    -
    - memset(&i2c_info, 0, sizeof(i2c_info));
    - strncpy(i2c_info.type, pentry->name, SFI_NAME_LEN);
    - i2c_info.irq = ((pentry->irq == (u8)0xff) ? 0 : pentry->irq);
    - i2c_info.addr = pentry->addr;
    - pr_debug("I2C bus = %d, name = %16.16s, irq = 0x%2x, addr = 0x%x\n",
    - pentry->host_num,
    - i2c_info.type,
    - i2c_info.irq,
    - i2c_info.addr);
    - pdata = dev->get_platform_data(&i2c_info);
    - i2c_info.platform_data = pdata;
    -
    - if (dev->delay)
    - intel_scu_i2c_device_register(pentry->host_num, &i2c_info);
    - else
    - i2c_register_board_info(pentry->host_num, &i2c_info, 1);
    -}
    -
    static void __init ipc_device_handler(struct sfi_device_table_entry *pentry,
    struct devs_id *dev)
    {
    @@ -934,89 +568,6 @@ static void __init ipc_device_handler(struct sfi_device_table_entry *pentry,
    intel_scu_device_register(pdev);
    }

    -static struct devs_id __init *get_device_id(u8 type, char *name)
    -{
    - struct devs_id *dev = device_ids;
    -
    - if (device_ids == NULL)
    - return NULL;
    -
    - while (dev->name[0]) {
    - if (dev->type == type &&
    - !strncmp(dev->name, name, SFI_NAME_LEN)) {
    - return dev;
    - }
    - dev++;
    - }
    -
    - return NULL;
    -}
    -
    -static int __init sfi_parse_devs(struct sfi_table_header *table)
    -{
    - struct sfi_table_simple *sb;
    - struct sfi_device_table_entry *pentry;
    - struct devs_id *dev = NULL;
    - int num, i;
    - 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 */
    -
    - dev = get_device_id(pentry->type, pentry->name);
    -
    - if ((dev == NULL) || (dev->get_platform_data == NULL))
    - continue;
    -
    - if (dev->device_handler) {
    - dev->device_handler(pentry, dev);
    - } else {
    - switch (pentry->type) {
    - case SFI_DEV_TYPE_IPC:
    - sfi_handle_ipc_dev(pentry, dev);
    - break;
    - case SFI_DEV_TYPE_SPI:
    - sfi_handle_spi_dev(pentry, dev);
    - break;
    - case SFI_DEV_TYPE_I2C:
    - sfi_handle_i2c_dev(pentry, dev);
    - break;
    - case SFI_DEV_TYPE_UART:
    - case SFI_DEV_TYPE_HSI:
    - default:
    - break;
    - }
    - }
    - }
    - return 0;
    -}
    -
    -static int __init intel_mid_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(intel_mid_platform_init);

    /*
    * we will search these buttons in SFI GPIO table (by name)
    @@ -1078,4 +629,4 @@ static int __init pb_keys_init(void)
    }
    return 0;
    }
    -late_initcall(pb_keys_init);
    +late_initcall(pb_keys_init);
    \ No newline at end of file
    diff --git a/arch/x86/platform/intel-mid/sfi.c b/arch/x86/platform/intel-mid/sfi.c
    new file mode 100644
    index 0000000..2f8196d
    --- /dev/null
    +++ b/arch/x86/platform/intel-mid/sfi.c
    @@ -0,0 +1,485 @@
    +/*
    + * intel_mid_sfi.c: Intel MID SFI initialization code
    + *
    + * (C) Copyright 2013 Intel Corporation
    + * Author: Sathyanarayanan Kuppuswamy <sathyanarayanan.kuppuswamy@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.
    + */
    +
    +#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/skbuff.h>
    +#include <linux/gpio.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/mmc/core.h>
    +#include <linux/mmc/card.h>
    +#include <linux/blkdev.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/intel-mid.h>
    +#include <asm/intel_mid_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>
    +#include "intel_mid_weak_decls.h"
    +
    +#define SFI_SIG_OEM0 "OEM0"
    +#define MAX_IPCDEVS 24
    +#define MAX_SCU_SPI 24
    +#define MAX_SCU_I2C 24
    +
    +static struct platform_device *ipc_devs[MAX_IPCDEVS];
    +static struct spi_board_info *spi_devs[MAX_SCU_SPI];
    +static struct i2c_board_info *i2c_devs[MAX_SCU_I2C];
    +static struct sfi_gpio_table_entry *gpio_table;
    +static struct sfi_timer_table_entry sfi_mtimer_array[SFI_MTMR_MAX_NUM];
    +static int ipc_next_dev;
    +static int spi_next_dev;
    +static int i2c_next_dev;
    +static int i2c_bus[MAX_SCU_I2C];
    +static int gpio_num_entry;
    +static u32 sfi_mtimer_usage[SFI_MTMR_MAX_NUM];
    +int sfi_mrtc_num;
    +int sfi_mtimer_num;
    +
    +struct sfi_rtc_table_entry sfi_mrtc_array[SFI_MRTC_MAX];
    +EXPORT_SYMBOL_GPL(sfi_mrtc_array);
    +
    +struct blocking_notifier_head intel_scu_notifier =
    + BLOCKING_NOTIFIER_INIT(intel_scu_notifier);
    +EXPORT_SYMBOL_GPL(intel_scu_notifier);
    +
    +/* parse all the mtimer info to a static mtimer array */
    +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;
    +}
    +
    +
    +/*
    + * Parsing GPIO table first, since the DEVS table will need this table
    + * to map the pin name to the actual pin.
    + */
    +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;
    +}
    +
    +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;
    +}
    +
    +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;
    +}
    +
    +/* 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 res __initdata = {
    + .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 *pentry,
    + struct devs_id *dev)
    +{
    + struct platform_device *pdev;
    + void *pdata = NULL;
    +
    + pr_debug("IPC bus, name = %16.16s, irq = 0x%2x\n",
    + pentry->name, pentry->irq);
    + pdata = dev->get_platform_data(pentry);
    +
    + pdev = platform_device_alloc(pentry->name, 0);
    + if (pdev == NULL) {
    + pr_err("out of memory for SFI platform device '%s'.\n",
    + pentry->name);
    + return;
    + }
    + install_irq_resource(pdev, pentry->irq);
    +
    + pdev->dev.platform_data = pdata;
    + platform_device_add(pdev);
    +}
    +
    +static void __init sfi_handle_spi_dev(struct sfi_device_table_entry *pentry,
    + struct devs_id *dev)
    +{
    + struct spi_board_info spi_info;
    + void *pdata = NULL;
    +
    + memset(&spi_info, 0, sizeof(spi_info));
    + strncpy(spi_info.modalias, pentry->name, SFI_NAME_LEN);
    + spi_info.irq = ((pentry->irq == (u8)0xff) ? 0 : pentry->irq);
    + spi_info.bus_num = pentry->host_num;
    + spi_info.chip_select = pentry->addr;
    + spi_info.max_speed_hz = pentry->max_freq;
    + pr_debug("SPI bus=%d, name=%16.16s, irq=0x%2x, max_freq=%d, cs=%d\n",
    + spi_info.bus_num,
    + spi_info.modalias,
    + spi_info.irq,
    + spi_info.max_speed_hz,
    + spi_info.chip_select);
    +
    + pdata = dev->get_platform_data(&spi_info);
    +
    + 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(struct sfi_device_table_entry *pentry,
    + struct devs_id *dev)
    +{
    + struct i2c_board_info i2c_info;
    + void *pdata = NULL;
    +
    + memset(&i2c_info, 0, sizeof(i2c_info));
    + strncpy(i2c_info.type, pentry->name, SFI_NAME_LEN);
    + i2c_info.irq = ((pentry->irq == (u8)0xff) ? 0 : pentry->irq);
    + i2c_info.addr = pentry->addr;
    + pr_debug("I2C bus = %d, name = %16.16s, irq = 0x%2x, addr = 0x%x\n",
    + pentry->host_num,
    + i2c_info.type,
    + i2c_info.irq,
    + i2c_info.addr);
    + pdata = dev->get_platform_data(&i2c_info);
    + i2c_info.platform_data = pdata;
    +
    + if (dev->delay)
    + intel_scu_i2c_device_register(pentry->host_num, &i2c_info);
    + else
    + i2c_register_board_info(pentry->host_num, &i2c_info, 1);
    +}
    +
    +static struct devs_id __init *get_device_id(u8 type, char *name)
    +{
    + struct devs_id *dev = device_ids;
    +
    + if (device_ids == NULL)
    + return NULL;
    +
    + while (dev->name[0]) {
    + if (dev->type == type &&
    + !strncmp(dev->name, name, SFI_NAME_LEN)) {
    + return dev;
    + }
    + dev++;
    + }
    +
    + return NULL;
    +}
    +
    +static int __init sfi_parse_devs(struct sfi_table_header *table)
    +{
    + struct sfi_table_simple *sb;
    + struct sfi_device_table_entry *pentry;
    + struct devs_id *dev = NULL;
    + int num, i;
    + 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 */
    +
    + dev = get_device_id(pentry->type, pentry->name);
    +
    + if ((dev == NULL) || (dev->get_platform_data == NULL))
    + continue;
    +
    + if (dev->device_handler) {
    + dev->device_handler(pentry, dev);
    + } else {
    + switch (pentry->type) {
    + case SFI_DEV_TYPE_IPC:
    + sfi_handle_ipc_dev(pentry, dev);
    + break;
    + case SFI_DEV_TYPE_SPI:
    + sfi_handle_spi_dev(pentry, dev);
    + break;
    + case SFI_DEV_TYPE_I2C:
    + sfi_handle_i2c_dev(pentry, dev);
    + break;
    + case SFI_DEV_TYPE_UART:
    + case SFI_DEV_TYPE_HSI:
    + default:
    + break;
    + }
    + }
    + }
    + return 0;
    +}
    +
    +static int __init intel_mid_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(intel_mid_platform_init);
    --
    1.8.4.rc3


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