From 2468f933b14ed49f15562cdb02bd2592a0aa8248 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Mon, 25 Jan 2021 21:39:46 +0200 Subject: [PATCH] x86/platform/intel-mid: Remove unused leftovers (vRTC) There is no driver present, remove the device creation and other leftovers. Signed-off-by: Andy Shevchenko Acked-by: Linus Walleij Signed-off-by: Rafael J. Wysocki --- arch/x86/include/asm/fixmap.h | 3 - arch/x86/include/asm/intel-mid.h | 10 -- arch/x86/include/asm/intel_mid_vrtc.h | 10 -- arch/x86/include/asm/intel_scu_ipc_legacy.h | 5 - arch/x86/platform/intel-mid/Makefile | 2 +- arch/x86/platform/intel-mid/intel-mid.c | 2 - arch/x86/platform/intel-mid/intel_mid_vrtc.c | 173 --------------------------- arch/x86/platform/intel-mid/sfi.c | 42 ------- 8 files changed, 1 insertion(+), 246 deletions(-) delete mode 100644 arch/x86/include/asm/intel_mid_vrtc.h delete mode 100644 arch/x86/platform/intel-mid/intel_mid_vrtc.c diff --git a/arch/x86/include/asm/fixmap.h b/arch/x86/include/asm/fixmap.h index 9f1a0a9..d0dcefb 100644 --- a/arch/x86/include/asm/fixmap.h +++ b/arch/x86/include/asm/fixmap.h @@ -108,9 +108,6 @@ enum fixed_addresses { #ifdef CONFIG_PARAVIRT_XXL FIX_PARAVIRT_BOOTMAP, #endif -#ifdef CONFIG_X86_INTEL_MID - FIX_LNW_VRTC, -#endif #ifdef CONFIG_ACPI_APEI_GHES /* Used for GHES mapping from assorted contexts */ diff --git a/arch/x86/include/asm/intel-mid.h b/arch/x86/include/asm/intel-mid.h index e68ae21..9a6f8b1 100644 --- a/arch/x86/include/asm/intel-mid.h +++ b/arch/x86/include/asm/intel-mid.h @@ -23,10 +23,7 @@ extern void intel_mid_pwr_power_off(void); extern int intel_mid_pwr_get_lss_id(struct pci_dev *pdev); extern int get_gpio_by_name(const char *name); -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[]; /* * Here defines the array of devices platform data that IAFW would export @@ -112,13 +109,6 @@ extern enum intel_mid_timer_options intel_mid_timer_options; #define BSEL_SOC_FUSE_111 0x7 #define SFI_MTMR_MAX_NUM 8 -#define SFI_MRTC_MAX 8 - -/* VRTC timer */ -#define MRST_VRTC_MAP_SZ 1024 -/* #define MRST_VRTC_PGOFFSET 0xc00 */ - -extern void intel_mid_rtc_init(void); /* The offset for the mapping of global gpio pin to irq */ #define INTEL_MID_IRQ_OFFSET 0x100 diff --git a/arch/x86/include/asm/intel_mid_vrtc.h b/arch/x86/include/asm/intel_mid_vrtc.h deleted file mode 100644 index 0b44b1a..0000000 --- a/arch/x86/include/asm/intel_mid_vrtc.h +++ /dev/null @@ -1,10 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _INTEL_MID_VRTC_H -#define _INTEL_MID_VRTC_H - -extern unsigned char vrtc_cmos_read(unsigned char reg); -extern void vrtc_cmos_write(unsigned char val, unsigned char reg); -extern void vrtc_get_time(struct timespec64 *now); -extern int vrtc_set_mmss(const struct timespec64 *now); - -#endif diff --git a/arch/x86/include/asm/intel_scu_ipc_legacy.h b/arch/x86/include/asm/intel_scu_ipc_legacy.h index 4cf13fec..2232197c 100644 --- a/arch/x86/include/asm/intel_scu_ipc_legacy.h +++ b/arch/x86/include/asm/intel_scu_ipc_legacy.h @@ -14,11 +14,6 @@ #define IPCMSG_SOFT_RESET 0xF2 #define IPCMSG_COLD_BOOT 0xF3 -#define IPCMSG_VRTC 0xFA /* Set vRTC device */ -/* Command id associated with message IPCMSG_VRTC */ -#define IPC_CMD_VRTC_SETTIME 1 /* Set time */ -#define IPC_CMD_VRTC_SETALARM 2 /* Set alarm */ - /* Don't call these in new code - they will be removed eventually */ /* Read single register */ diff --git a/arch/x86/platform/intel-mid/Makefile b/arch/x86/platform/intel-mid/Makefile index cc2549f..5794e66 100644 --- a/arch/x86/platform/intel-mid/Makefile +++ b/arch/x86/platform/intel-mid/Makefile @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only -obj-$(CONFIG_X86_INTEL_MID) += intel-mid.o intel_mid_vrtc.o pwr.o +obj-$(CONFIG_X86_INTEL_MID) += intel-mid.o pwr.o # SFI specific code ifdef CONFIG_X86_INTEL_MID diff --git a/arch/x86/platform/intel-mid/intel-mid.c b/arch/x86/platform/intel-mid/intel-mid.c index 7807281..ada39fb 100644 --- a/arch/x86/platform/intel-mid/intel-mid.c +++ b/arch/x86/platform/intel-mid/intel-mid.c @@ -25,7 +25,6 @@ #include #include #include -#include #include #include #include @@ -159,7 +158,6 @@ void __init x86_intel_mid_early_setup(void) x86_init.timers.timer_init = intel_mid_time_init; x86_init.timers.setup_percpu_clockev = x86_init_noop; - x86_init.timers.wallclock_init = intel_mid_rtc_init; x86_init.irqs.pre_vector_init = x86_init_noop; diff --git a/arch/x86/platform/intel-mid/intel_mid_vrtc.c b/arch/x86/platform/intel-mid/intel_mid_vrtc.c deleted file mode 100644 index 2226da4..0000000 --- a/arch/x86/platform/intel-mid/intel_mid_vrtc.c +++ /dev/null @@ -1,173 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * intel_mid_vrtc.c: Driver for virtual RTC device on Intel MID platform - * - * (C) Copyright 2009 Intel Corporation - * - * Note: - * VRTC is emulated by system controller firmware, the real HW - * RTC is located in the PMIC device. SCU FW shadows PMIC RTC - * in a memory mapped IO space that is visible to the host IA - * processor. - * - * This driver is based on RTC CMOS driver. - */ - -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include - -static unsigned char __iomem *vrtc_virt_base; - -unsigned char vrtc_cmos_read(unsigned char reg) -{ - unsigned char retval; - - /* vRTC's registers range from 0x0 to 0xD */ - if (reg > 0xd || !vrtc_virt_base) - return 0xff; - - lock_cmos_prefix(reg); - retval = __raw_readb(vrtc_virt_base + (reg << 2)); - lock_cmos_suffix(reg); - return retval; -} -EXPORT_SYMBOL_GPL(vrtc_cmos_read); - -void vrtc_cmos_write(unsigned char val, unsigned char reg) -{ - if (reg > 0xd || !vrtc_virt_base) - return; - - lock_cmos_prefix(reg); - __raw_writeb(val, vrtc_virt_base + (reg << 2)); - lock_cmos_suffix(reg); -} -EXPORT_SYMBOL_GPL(vrtc_cmos_write); - -void vrtc_get_time(struct timespec64 *now) -{ - u8 sec, min, hour, mday, mon; - unsigned long flags; - u32 year; - - spin_lock_irqsave(&rtc_lock, flags); - - while ((vrtc_cmos_read(RTC_FREQ_SELECT) & RTC_UIP)) - cpu_relax(); - - sec = vrtc_cmos_read(RTC_SECONDS); - min = vrtc_cmos_read(RTC_MINUTES); - hour = vrtc_cmos_read(RTC_HOURS); - mday = vrtc_cmos_read(RTC_DAY_OF_MONTH); - mon = vrtc_cmos_read(RTC_MONTH); - year = vrtc_cmos_read(RTC_YEAR); - - spin_unlock_irqrestore(&rtc_lock, flags); - - /* vRTC YEAR reg contains the offset to 1972 */ - year += 1972; - - pr_info("vRTC: sec: %d min: %d hour: %d day: %d " - "mon: %d year: %d\n", sec, min, hour, mday, mon, year); - - now->tv_sec = mktime64(year, mon, mday, hour, min, sec); - now->tv_nsec = 0; -} - -int vrtc_set_mmss(const struct timespec64 *now) -{ - unsigned long flags; - struct rtc_time tm; - int year; - int retval = 0; - - rtc_time64_to_tm(now->tv_sec, &tm); - if (!rtc_valid_tm(&tm) && tm.tm_year >= 72) { - /* - * tm.year is the number of years since 1900, and the - * vrtc need the years since 1972. - */ - year = tm.tm_year - 72; - spin_lock_irqsave(&rtc_lock, flags); - vrtc_cmos_write(year, RTC_YEAR); - vrtc_cmos_write(tm.tm_mon, RTC_MONTH); - vrtc_cmos_write(tm.tm_mday, RTC_DAY_OF_MONTH); - vrtc_cmos_write(tm.tm_hour, RTC_HOURS); - vrtc_cmos_write(tm.tm_min, RTC_MINUTES); - vrtc_cmos_write(tm.tm_sec, RTC_SECONDS); - spin_unlock_irqrestore(&rtc_lock, flags); - } else { - pr_err("%s: Invalid vRTC value: write of %llx to vRTC failed\n", - __func__, (s64)now->tv_sec); - retval = -EINVAL; - } - return retval; -} - -void __init intel_mid_rtc_init(void) -{ - unsigned long vrtc_paddr; - - sfi_table_parse(SFI_SIG_MRTC, NULL, NULL, sfi_parse_mrtc); - - vrtc_paddr = sfi_mrtc_array[0].phys_addr; - if (!sfi_mrtc_num || !vrtc_paddr) - return; - - vrtc_virt_base = (void __iomem *)set_fixmap_offset_nocache(FIX_LNW_VRTC, - vrtc_paddr); - x86_platform.get_wallclock = vrtc_get_time; - x86_platform.set_wallclock = vrtc_set_mmss; -} - -/* - * The Moorestown platform has a memory mapped virtual RTC device that emulates - * the programming interface of the RTC. - */ - -static struct resource vrtc_resources[] = { - [0] = { - .flags = IORESOURCE_MEM, - }, - [1] = { - .flags = IORESOURCE_IRQ, - } -}; - -static struct platform_device vrtc_device = { - .name = "rtc_mrst", - .id = -1, - .resource = vrtc_resources, - .num_resources = ARRAY_SIZE(vrtc_resources), -}; - -/* Register the RTC device if appropriate */ -static int __init intel_mid_device_create(void) -{ - /* No Moorestown, no device */ - if (!intel_mid_identify_cpu()) - return -ENODEV; - /* No timer, no device */ - if (!sfi_mrtc_num) - return -ENODEV; - - /* iomem resource */ - vrtc_resources[0].start = sfi_mrtc_array[0].phys_addr; - vrtc_resources[0].end = sfi_mrtc_array[0].phys_addr + - MRST_VRTC_MAP_SZ; - /* irq resource */ - vrtc_resources[1].start = sfi_mrtc_array[0].irq; - vrtc_resources[1].end = sfi_mrtc_array[0].irq; - - return platform_device_register(&vrtc_device); -} -device_initcall(intel_mid_device_create); diff --git a/arch/x86/platform/intel-mid/sfi.c b/arch/x86/platform/intel-mid/sfi.c index 2b22587..a50698e 100644 --- a/arch/x86/platform/intel-mid/sfi.c +++ b/arch/x86/platform/intel-mid/sfi.c @@ -31,7 +31,6 @@ #include #include #include -#include #include #include #include @@ -54,12 +53,8 @@ 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); @@ -138,43 +133,6 @@ void sfi_free_mtmr(struct sfi_timer_table_entry *mtmr) } } -/* 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 = MP_IRQTRIG_LEVEL | MP_IRQPOL_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); - mp_map_gsi_to_irq(pentry->irq, IOAPIC_MAP_ALLOC, NULL); - } - return 0; -} - - /* * Parsing GPIO table first, since the DEVS table will need this table * to map the pin name to the actual pin. -- 2.7.4