diff options
Diffstat (limited to 'arch/x86/platform/intel-mid/device_libs')
11 files changed, 90 insertions, 12 deletions
diff --git a/arch/x86/platform/intel-mid/device_libs/Makefile b/arch/x86/platform/intel-mid/device_libs/Makefile index 097e7a7940d..af9307f2cc2 100644 --- a/arch/x86/platform/intel-mid/device_libs/Makefile +++ b/arch/x86/platform/intel-mid/device_libs/Makefile @@ -20,3 +20,4 @@ obj-$(subst m,y,$(CONFIG_DRM_MEDFIELD)) += platform_tc35876x.o obj-$(subst m,y,$(CONFIG_SERIAL_MRST_MAX3110)) += platform_max3111.o # MISC Devices obj-$(subst m,y,$(CONFIG_KEYBOARD_GPIO)) += platform_gpio_keys.o +obj-$(subst m,y,$(CONFIG_INTEL_MID_WATCHDOG)) += platform_wdt.o diff --git a/arch/x86/platform/intel-mid/device_libs/platform_emc1403.c b/arch/x86/platform/intel-mid/device_libs/platform_emc1403.c index 0d942c1d26d..69a783689d2 100644 --- a/arch/x86/platform/intel-mid/device_libs/platform_emc1403.c +++ b/arch/x86/platform/intel-mid/device_libs/platform_emc1403.c @@ -22,7 +22,9 @@ static void __init *emc1403_platform_data(void *info) int intr = get_gpio_by_name("thermal_int"); int intr2nd = get_gpio_by_name("thermal_alert"); - if (intr == -1 || intr2nd == -1) + if (intr < 0) + return NULL; + if (intr2nd < 0) return NULL; i2c_info->irq = intr + INTEL_MID_IRQ_OFFSET; diff --git a/arch/x86/platform/intel-mid/device_libs/platform_gpio_keys.c b/arch/x86/platform/intel-mid/device_libs/platform_gpio_keys.c index a013a4834bb..dccae6b0413 100644 --- a/arch/x86/platform/intel-mid/device_libs/platform_gpio_keys.c +++ b/arch/x86/platform/intel-mid/device_libs/platform_gpio_keys.c @@ -66,7 +66,7 @@ static int __init pb_keys_init(void) 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) + if (gb[i].gpio < 0) continue; if (i != good) diff --git a/arch/x86/platform/intel-mid/device_libs/platform_ipc.h b/arch/x86/platform/intel-mid/device_libs/platform_ipc.h index 8f568dd7960..79bb09d4f71 100644 --- a/arch/x86/platform/intel-mid/device_libs/platform_ipc.h +++ b/arch/x86/platform/intel-mid/device_libs/platform_ipc.h @@ -12,6 +12,7 @@ #ifndef _PLATFORM_IPC_H_ #define _PLATFORM_IPC_H_ -extern void __init ipc_device_handler(struct sfi_device_table_entry *pentry, - struct devs_id *dev) __attribute__((weak)); +void __init +ipc_device_handler(struct sfi_device_table_entry *pentry, struct devs_id *dev); + #endif diff --git a/arch/x86/platform/intel-mid/device_libs/platform_lis331.c b/arch/x86/platform/intel-mid/device_libs/platform_lis331.c index 15278c11f71..54226de7541 100644 --- a/arch/x86/platform/intel-mid/device_libs/platform_lis331.c +++ b/arch/x86/platform/intel-mid/device_libs/platform_lis331.c @@ -21,7 +21,9 @@ static void __init *lis331dl_platform_data(void *info) int intr = get_gpio_by_name("accel_int"); int intr2nd = get_gpio_by_name("accel_2"); - if (intr == -1 || intr2nd == -1) + if (intr < 0) + return NULL; + if (intr2nd < 0) return NULL; i2c_info->irq = intr + INTEL_MID_IRQ_OFFSET; diff --git a/arch/x86/platform/intel-mid/device_libs/platform_max7315.c b/arch/x86/platform/intel-mid/device_libs/platform_max7315.c index 94ade10024a..2c8acbc1e9a 100644 --- a/arch/x86/platform/intel-mid/device_libs/platform_max7315.c +++ b/arch/x86/platform/intel-mid/device_libs/platform_max7315.c @@ -48,7 +48,7 @@ static void __init *max7315_platform_data(void *info) gpio_base = get_gpio_by_name(base_pin_name); intr = get_gpio_by_name(intr_pin_name); - if (gpio_base == -1) + if (gpio_base < 0) return NULL; max7315->gpio_base = gpio_base; if (intr != -1) { diff --git a/arch/x86/platform/intel-mid/device_libs/platform_mpu3050.c b/arch/x86/platform/intel-mid/device_libs/platform_mpu3050.c index dd28d63c84f..cfe9a47a1e8 100644 --- a/arch/x86/platform/intel-mid/device_libs/platform_mpu3050.c +++ b/arch/x86/platform/intel-mid/device_libs/platform_mpu3050.c @@ -19,7 +19,7 @@ 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) + if (intr < 0) return NULL; i2c_info->irq = intr + INTEL_MID_IRQ_OFFSET; diff --git a/arch/x86/platform/intel-mid/device_libs/platform_msic.h b/arch/x86/platform/intel-mid/device_libs/platform_msic.h index 917eb56d77d..b7be1d041da 100644 --- a/arch/x86/platform/intel-mid/device_libs/platform_msic.h +++ b/arch/x86/platform/intel-mid/device_libs/platform_msic.h @@ -14,6 +14,6 @@ extern struct intel_msic_platform_data msic_pdata; -extern void *msic_generic_platform_data(void *info, - enum intel_msic_block block) __attribute__((weak)); +void *msic_generic_platform_data(void *info, enum intel_msic_block block); + #endif diff --git a/arch/x86/platform/intel-mid/device_libs/platform_pmic_gpio.c b/arch/x86/platform/intel-mid/device_libs/platform_pmic_gpio.c index d87182a0926..65c2a9a19db 100644 --- a/arch/x86/platform/intel-mid/device_libs/platform_pmic_gpio.c +++ b/arch/x86/platform/intel-mid/device_libs/platform_pmic_gpio.c @@ -26,7 +26,7 @@ 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) + if (gpio_base < 0) gpio_base = 64; pmic_gpio_pdata.gpio_base = gpio_base; pmic_gpio_pdata.irq_base = gpio_base + INTEL_MID_IRQ_OFFSET; diff --git a/arch/x86/platform/intel-mid/device_libs/platform_tca6416.c b/arch/x86/platform/intel-mid/device_libs/platform_tca6416.c index 22881c9a673..33be0b3be6e 100644 --- a/arch/x86/platform/intel-mid/device_libs/platform_tca6416.c +++ b/arch/x86/platform/intel-mid/device_libs/platform_tca6416.c @@ -34,10 +34,10 @@ static void *tca6416_platform_data(void *info) gpio_base = get_gpio_by_name(base_pin_name); intr = get_gpio_by_name(intr_pin_name); - if (gpio_base == -1) + if (gpio_base < 0) return NULL; tca6416.gpio_base = gpio_base; - if (intr != -1) { + if (intr >= 0) { i2c_info->irq = intr + INTEL_MID_IRQ_OFFSET; tca6416.irq_base = gpio_base + INTEL_MID_IRQ_OFFSET; } else { diff --git a/arch/x86/platform/intel-mid/device_libs/platform_wdt.c b/arch/x86/platform/intel-mid/device_libs/platform_wdt.c new file mode 100644 index 00000000000..973cf3bfa9f --- /dev/null +++ b/arch/x86/platform/intel-mid/device_libs/platform_wdt.c @@ -0,0 +1,72 @@ +/* + * platform_wdt.c: Watchdog platform library file + * + * (C) Copyright 2014 Intel Corporation + * Author: David Cohen <david.a.cohen@linux.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/interrupt.h> +#include <linux/platform_device.h> +#include <linux/platform_data/intel-mid_wdt.h> +#include <asm/intel-mid.h> +#include <asm/io_apic.h> + +#define TANGIER_EXT_TIMER0_MSI 15 + +static struct platform_device wdt_dev = { + .name = "intel_mid_wdt", + .id = -1, +}; + +static int tangier_probe(struct platform_device *pdev) +{ + int ioapic; + int irq; + struct intel_mid_wdt_pdata *pdata = pdev->dev.platform_data; + struct io_apic_irq_attr irq_attr = { 0 }; + + if (!pdata) + return -EINVAL; + + irq = pdata->irq; + ioapic = mp_find_ioapic(irq); + if (ioapic >= 0) { + int ret; + irq_attr.ioapic = ioapic; + irq_attr.ioapic_pin = irq; + irq_attr.trigger = 1; + /* irq_attr.polarity = 0; -> Active high */ + ret = io_apic_set_pci_routing(NULL, irq, &irq_attr); + if (ret) + return ret; + } else { + dev_warn(&pdev->dev, "cannot find interrupt %d in ioapic\n", + irq); + return -EINVAL; + } + + return 0; +} + +static struct intel_mid_wdt_pdata tangier_pdata = { + .irq = TANGIER_EXT_TIMER0_MSI, + .probe = tangier_probe, +}; + +static int __init register_mid_wdt(void) +{ + if (intel_mid_identify_cpu() == INTEL_MID_CPU_CHIP_TANGIER) { + wdt_dev.dev.platform_data = &tangier_pdata; + return platform_device_register(&wdt_dev); + } + + return -ENODEV; +} + +rootfs_initcall(register_mid_wdt); 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