Merge branch 'x86-olpc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-olpc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, olpc-xo15-sci: Enable EC wakeup capability x86, olpc: Fix dependency on POWER_SUPPLY x86, olpc: Add XO-1.5 SCI driver x86, olpc: Add XO-1 RTC driver x86, olpc-xo1-sci: Propagate power supply/battery events x86, olpc-xo1-sci: Add lid switch functionality x86, olpc-xo1-sci: Add GPE handler and ebook switch functionality x86, olpc: EC SCI wakeup mask functionality x86, olpc: Add XO-1 SCI driver and power button control x86, olpc: Add XO-1 suspend/resume support x86, olpc: Rename olpc-xo1 to olpc-xo1-pm x86, olpc: Move CS5536-related constants to cs5535.h x86, olpc: Add missing elements to device treehifive-unleashed-5.1
Linus Torvalds
commit
fa8f53ace4
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@ -0,0 +1,5 @@
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OLPC XO-1 RTC
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~~~~~~~~~~~~~
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Required properties:
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- compatible : "olpc,xo1-rtc"
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@ -2024,11 +2024,44 @@ config OLPC
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Add support for detecting the unique features of the OLPC
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XO hardware.
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config OLPC_XO1
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tristate "OLPC XO-1 support"
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depends on OLPC && MFD_CS5535
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config OLPC_XO1_PM
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bool "OLPC XO-1 Power Management"
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depends on OLPC && MFD_CS5535 && PM_SLEEP
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select MFD_CORE
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---help---
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Add support for non-essential features of the OLPC XO-1 laptop.
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Add support for poweroff and suspend of the OLPC XO-1 laptop.
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config OLPC_XO1_RTC
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bool "OLPC XO-1 Real Time Clock"
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depends on OLPC_XO1_PM && RTC_DRV_CMOS
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---help---
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Add support for the XO-1 real time clock, which can be used as a
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programmable wakeup source.
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config OLPC_XO1_SCI
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bool "OLPC XO-1 SCI extras"
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depends on OLPC && OLPC_XO1_PM
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select POWER_SUPPLY
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select GPIO_CS5535
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select MFD_CORE
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---help---
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Add support for SCI-based features of the OLPC XO-1 laptop:
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- EC-driven system wakeups
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- Power button
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- Ebook switch
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- Lid switch
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- AC adapter status updates
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- Battery status updates
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config OLPC_XO15_SCI
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bool "OLPC XO-1.5 SCI extras"
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depends on OLPC && ACPI
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select POWER_SUPPLY
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---help---
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Add support for SCI-based features of the OLPC XO-1.5 laptop:
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- EC-driven system wakeups
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- AC adapter status updates
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- Battery status updates
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endif # X86_32
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@ -13,6 +13,7 @@ struct olpc_platform_t {
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#define OLPC_F_PRESENT 0x01
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#define OLPC_F_DCON 0x02
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#define OLPC_F_EC_WIDE_SCI 0x04
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#ifdef CONFIG_OLPC
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@ -62,6 +63,13 @@ static inline int olpc_board_at_least(uint32_t rev)
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return olpc_platform_info.boardrev >= rev;
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}
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extern void olpc_ec_wakeup_set(u16 value);
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extern void olpc_ec_wakeup_clear(u16 value);
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extern bool olpc_ec_wakeup_available(void);
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extern int olpc_ec_mask_write(u16 bits);
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extern int olpc_ec_sci_query(u16 *sci_value);
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#else
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static inline int machine_is_olpc(void)
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@ -74,6 +82,20 @@ static inline int olpc_has_dcon(void)
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return 0;
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}
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static inline void olpc_ec_wakeup_set(u16 value) { }
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static inline void olpc_ec_wakeup_clear(u16 value) { }
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static inline bool olpc_ec_wakeup_available(void)
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{
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return false;
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}
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#endif
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#ifdef CONFIG_OLPC_XO1_PM
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extern void do_olpc_suspend_lowlevel(void);
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extern void olpc_xo1_pm_wakeup_set(u16 value);
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extern void olpc_xo1_pm_wakeup_clear(u16 value);
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#endif
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extern int pci_olpc_init(void);
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@ -83,14 +105,19 @@ extern int pci_olpc_init(void);
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extern int olpc_ec_cmd(unsigned char cmd, unsigned char *inbuf, size_t inlen,
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unsigned char *outbuf, size_t outlen);
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extern int olpc_ec_mask_set(uint8_t bits);
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extern int olpc_ec_mask_unset(uint8_t bits);
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/* EC commands */
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#define EC_FIRMWARE_REV 0x08
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#define EC_WLAN_ENTER_RESET 0x35
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#define EC_WLAN_LEAVE_RESET 0x25
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#define EC_FIRMWARE_REV 0x08
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#define EC_WRITE_SCI_MASK 0x1b
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#define EC_WAKE_UP_WLAN 0x24
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#define EC_WLAN_LEAVE_RESET 0x25
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#define EC_READ_EB_MODE 0x2a
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#define EC_SET_SCI_INHIBIT 0x32
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#define EC_SET_SCI_INHIBIT_RELEASE 0x34
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#define EC_WLAN_ENTER_RESET 0x35
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#define EC_WRITE_EXT_SCI_MASK 0x38
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#define EC_SCI_QUERY 0x84
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#define EC_EXT_SCI_QUERY 0x85
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/* SCI source values */
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@ -99,10 +126,12 @@ extern int olpc_ec_mask_unset(uint8_t bits);
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#define EC_SCI_SRC_BATTERY 0x02
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#define EC_SCI_SRC_BATSOC 0x04
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#define EC_SCI_SRC_BATERR 0x08
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#define EC_SCI_SRC_EBOOK 0x10
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#define EC_SCI_SRC_WLAN 0x20
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#define EC_SCI_SRC_EBOOK 0x10 /* XO-1 only */
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#define EC_SCI_SRC_WLAN 0x20 /* XO-1 only */
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#define EC_SCI_SRC_ACPWR 0x40
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#define EC_SCI_SRC_ALL 0x7F
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#define EC_SCI_SRC_BATCRIT 0x80
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#define EC_SCI_SRC_GPWAKE 0x100 /* XO-1.5 only */
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#define EC_SCI_SRC_ALL 0x1FF
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/* GPIO assignments */
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@ -116,7 +145,7 @@ extern int olpc_ec_mask_unset(uint8_t bits);
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#define OLPC_GPIO_SMB_CLK 14
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#define OLPC_GPIO_SMB_DATA 15
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#define OLPC_GPIO_WORKAUX geode_gpio(24)
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#define OLPC_GPIO_LID geode_gpio(26)
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#define OLPC_GPIO_ECSCI geode_gpio(27)
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#define OLPC_GPIO_LID 26
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#define OLPC_GPIO_ECSCI 27
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#endif /* _ASM_X86_OLPC_H */
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@ -1,2 +1,5 @@
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obj-$(CONFIG_OLPC) += olpc.o olpc_ofw.o olpc_dt.o
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obj-$(CONFIG_OLPC_XO1) += olpc-xo1.o
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obj-$(CONFIG_OLPC_XO1_PM) += olpc-xo1-pm.o xo1-wakeup.o
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obj-$(CONFIG_OLPC_XO1_RTC) += olpc-xo1-rtc.o
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obj-$(CONFIG_OLPC_XO1_SCI) += olpc-xo1-sci.o
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obj-$(CONFIG_OLPC_XO15_SCI) += olpc-xo15-sci.o
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@ -0,0 +1,215 @@
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/*
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* Support for power management features of the OLPC XO-1 laptop
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*
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* Copyright (C) 2010 Andres Salomon <dilinger@queued.net>
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* Copyright (C) 2010 One Laptop per Child
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* Copyright (C) 2006 Red Hat, Inc.
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* Copyright (C) 2006 Advanced Micro Devices, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/cs5535.h>
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#include <linux/platform_device.h>
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#include <linux/pm.h>
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#include <linux/mfd/core.h>
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#include <linux/suspend.h>
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#include <asm/io.h>
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#include <asm/olpc.h>
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#define DRV_NAME "olpc-xo1-pm"
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static unsigned long acpi_base;
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static unsigned long pms_base;
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static u16 wakeup_mask = CS5536_PM_PWRBTN;
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static struct {
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unsigned long address;
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unsigned short segment;
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} ofw_bios_entry = { 0xF0000 + PAGE_OFFSET, __KERNEL_CS };
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/* Set bits in the wakeup mask */
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void olpc_xo1_pm_wakeup_set(u16 value)
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{
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wakeup_mask |= value;
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}
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EXPORT_SYMBOL_GPL(olpc_xo1_pm_wakeup_set);
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/* Clear bits in the wakeup mask */
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void olpc_xo1_pm_wakeup_clear(u16 value)
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{
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wakeup_mask &= ~value;
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}
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EXPORT_SYMBOL_GPL(olpc_xo1_pm_wakeup_clear);
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static int xo1_power_state_enter(suspend_state_t pm_state)
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{
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unsigned long saved_sci_mask;
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int r;
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/* Only STR is supported */
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if (pm_state != PM_SUSPEND_MEM)
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return -EINVAL;
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r = olpc_ec_cmd(EC_SET_SCI_INHIBIT, NULL, 0, NULL, 0);
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if (r)
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return r;
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/*
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* Save SCI mask (this gets lost since PM1_EN is used as a mask for
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* wakeup events, which is not necessarily the same event set)
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*/
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saved_sci_mask = inl(acpi_base + CS5536_PM1_STS);
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saved_sci_mask &= 0xffff0000;
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/* Save CPU state */
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do_olpc_suspend_lowlevel();
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/* Resume path starts here */
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/* Restore SCI mask (using dword access to CS5536_PM1_EN) */
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outl(saved_sci_mask, acpi_base + CS5536_PM1_STS);
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/* Tell the EC to stop inhibiting SCIs */
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olpc_ec_cmd(EC_SET_SCI_INHIBIT_RELEASE, NULL, 0, NULL, 0);
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/*
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* Tell the wireless module to restart USB communication.
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* Must be done twice.
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*/
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olpc_ec_cmd(EC_WAKE_UP_WLAN, NULL, 0, NULL, 0);
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olpc_ec_cmd(EC_WAKE_UP_WLAN, NULL, 0, NULL, 0);
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return 0;
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}
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asmlinkage int xo1_do_sleep(u8 sleep_state)
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{
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void *pgd_addr = __va(read_cr3());
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/* Program wakeup mask (using dword access to CS5536_PM1_EN) */
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outl(wakeup_mask << 16, acpi_base + CS5536_PM1_STS);
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__asm__("movl %0,%%eax" : : "r" (pgd_addr));
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__asm__("call *(%%edi); cld"
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: : "D" (&ofw_bios_entry));
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__asm__("movb $0x34, %al\n\t"
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"outb %al, $0x70\n\t"
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"movb $0x30, %al\n\t"
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"outb %al, $0x71\n\t");
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return 0;
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}
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static void xo1_power_off(void)
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{
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printk(KERN_INFO "OLPC XO-1 power off sequence...\n");
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/* Enable all of these controls with 0 delay */
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outl(0x40000000, pms_base + CS5536_PM_SCLK);
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outl(0x40000000, pms_base + CS5536_PM_IN_SLPCTL);
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outl(0x40000000, pms_base + CS5536_PM_WKXD);
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outl(0x40000000, pms_base + CS5536_PM_WKD);
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/* Clear status bits (possibly unnecessary) */
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outl(0x0002ffff, pms_base + CS5536_PM_SSC);
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outl(0xffffffff, acpi_base + CS5536_PM_GPE0_STS);
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/* Write SLP_EN bit to start the machinery */
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outl(0x00002000, acpi_base + CS5536_PM1_CNT);
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}
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static int xo1_power_state_valid(suspend_state_t pm_state)
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{
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/* suspend-to-RAM only */
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return pm_state == PM_SUSPEND_MEM;
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}
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static const struct platform_suspend_ops xo1_suspend_ops = {
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.valid = xo1_power_state_valid,
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.enter = xo1_power_state_enter,
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};
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static int __devinit xo1_pm_probe(struct platform_device *pdev)
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{
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struct resource *res;
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int err;
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/* don't run on non-XOs */
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if (!machine_is_olpc())
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return -ENODEV;
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err = mfd_cell_enable(pdev);
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if (err)
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return err;
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res = platform_get_resource(pdev, IORESOURCE_IO, 0);
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if (!res) {
|
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dev_err(&pdev->dev, "can't fetch device resource info\n");
|
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return -EIO;
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}
|
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if (strcmp(pdev->name, "cs5535-pms") == 0)
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pms_base = res->start;
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else if (strcmp(pdev->name, "olpc-xo1-pm-acpi") == 0)
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acpi_base = res->start;
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|
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/* If we have both addresses, we can override the poweroff hook */
|
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if (pms_base && acpi_base) {
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suspend_set_ops(&xo1_suspend_ops);
|
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pm_power_off = xo1_power_off;
|
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printk(KERN_INFO "OLPC XO-1 support registered\n");
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}
|
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|
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return 0;
|
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}
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|
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static int __devexit xo1_pm_remove(struct platform_device *pdev)
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{
|
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mfd_cell_disable(pdev);
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|
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if (strcmp(pdev->name, "cs5535-pms") == 0)
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pms_base = 0;
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else if (strcmp(pdev->name, "olpc-xo1-pm-acpi") == 0)
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acpi_base = 0;
|
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|
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pm_power_off = NULL;
|
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return 0;
|
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}
|
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|
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static struct platform_driver cs5535_pms_driver = {
|
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.driver = {
|
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.name = "cs5535-pms",
|
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.owner = THIS_MODULE,
|
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},
|
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.probe = xo1_pm_probe,
|
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.remove = __devexit_p(xo1_pm_remove),
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};
|
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|
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static struct platform_driver cs5535_acpi_driver = {
|
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.driver = {
|
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.name = "olpc-xo1-pm-acpi",
|
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.owner = THIS_MODULE,
|
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},
|
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.probe = xo1_pm_probe,
|
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.remove = __devexit_p(xo1_pm_remove),
|
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};
|
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|
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static int __init xo1_pm_init(void)
|
||||
{
|
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int r;
|
||||
|
||||
r = platform_driver_register(&cs5535_pms_driver);
|
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if (r)
|
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return r;
|
||||
|
||||
r = platform_driver_register(&cs5535_acpi_driver);
|
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if (r)
|
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platform_driver_unregister(&cs5535_pms_driver);
|
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|
||||
return r;
|
||||
}
|
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arch_initcall(xo1_pm_init);
|
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|
|
@ -0,0 +1,81 @@
|
|||
/*
|
||||
* Support for OLPC XO-1 Real Time Clock (RTC)
|
||||
*
|
||||
* Copyright (C) 2011 One Laptop per Child
|
||||
*
|
||||
* 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; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*/
|
||||
|
||||
#include <linux/mc146818rtc.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/rtc.h>
|
||||
#include <linux/of.h>
|
||||
|
||||
#include <asm/msr.h>
|
||||
#include <asm/olpc.h>
|
||||
|
||||
static void rtc_wake_on(struct device *dev)
|
||||
{
|
||||
olpc_xo1_pm_wakeup_set(CS5536_PM_RTC);
|
||||
}
|
||||
|
||||
static void rtc_wake_off(struct device *dev)
|
||||
{
|
||||
olpc_xo1_pm_wakeup_clear(CS5536_PM_RTC);
|
||||
}
|
||||
|
||||
static struct resource rtc_platform_resource[] = {
|
||||
[0] = {
|
||||
.start = RTC_PORT(0),
|
||||
.end = RTC_PORT(1),
|
||||
.flags = IORESOURCE_IO,
|
||||
},
|
||||
[1] = {
|
||||
.start = RTC_IRQ,
|
||||
.end = RTC_IRQ,
|
||||
.flags = IORESOURCE_IRQ,
|
||||
}
|
||||
};
|
||||
|
||||
static struct cmos_rtc_board_info rtc_info = {
|
||||
.rtc_day_alarm = 0,
|
||||
.rtc_mon_alarm = 0,
|
||||
.rtc_century = 0,
|
||||
.wake_on = rtc_wake_on,
|
||||
.wake_off = rtc_wake_off,
|
||||
};
|
||||
|
||||
static struct platform_device xo1_rtc_device = {
|
||||
.name = "rtc_cmos",
|
||||
.id = -1,
|
||||
.num_resources = ARRAY_SIZE(rtc_platform_resource),
|
||||
.dev.platform_data = &rtc_info,
|
||||
.resource = rtc_platform_resource,
|
||||
};
|
||||
|
||||
static int __init xo1_rtc_init(void)
|
||||
{
|
||||
int r;
|
||||
struct device_node *node;
|
||||
|
||||
node = of_find_compatible_node(NULL, NULL, "olpc,xo1-rtc");
|
||||
if (!node)
|
||||
return 0;
|
||||
of_node_put(node);
|
||||
|
||||
pr_info("olpc-xo1-rtc: Initializing OLPC XO-1 RTC\n");
|
||||
rdmsrl(MSR_RTC_DOMA_OFFSET, rtc_info.rtc_day_alarm);
|
||||
rdmsrl(MSR_RTC_MONA_OFFSET, rtc_info.rtc_mon_alarm);
|
||||
rdmsrl(MSR_RTC_CEN_OFFSET, rtc_info.rtc_century);
|
||||
|
||||
r = platform_device_register(&xo1_rtc_device);
|
||||
if (r)
|
||||
return r;
|
||||
|
||||
device_init_wakeup(&xo1_rtc_device.dev, 1);
|
||||
return 0;
|
||||
}
|
||||
arch_initcall(xo1_rtc_init);
|
||||
|
|
@ -0,0 +1,614 @@
|
|||
/*
|
||||
* Support for OLPC XO-1 System Control Interrupts (SCI)
|
||||
*
|
||||
* Copyright (C) 2010 One Laptop per Child
|
||||
* Copyright (C) 2006 Red Hat, Inc.
|
||||
* Copyright (C) 2006 Advanced Micro Devices, Inc.
|
||||
*
|
||||
* 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; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*/
|
||||
|
||||
#include <linux/cs5535.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/gpio.h>
|
||||
#include <linux/input.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/pm.h>
|
||||
#include <linux/mfd/core.h>
|
||||
#include <linux/power_supply.h>
|
||||
#include <linux/suspend.h>
|
||||
#include <linux/workqueue.h>
|
||||
|
||||
#include <asm/io.h>
|
||||
#include <asm/msr.h>
|
||||
#include <asm/olpc.h>
|
||||
|
||||
#define DRV_NAME "olpc-xo1-sci"
|
||||
#define PFX DRV_NAME ": "
|
||||
|
||||
static unsigned long acpi_base;
|
||||
static struct input_dev *power_button_idev;
|
||||
static struct input_dev *ebook_switch_idev;
|
||||
static struct input_dev *lid_switch_idev;
|
||||
|
||||
static int sci_irq;
|
||||
|
||||
static bool lid_open;
|
||||
static bool lid_inverted;
|
||||
static int lid_wake_mode;
|
||||
|
||||
enum lid_wake_modes {
|
||||
LID_WAKE_ALWAYS,
|
||||
LID_WAKE_OPEN,
|
||||
LID_WAKE_CLOSE,
|
||||
};
|
||||
|
||||
static const char * const lid_wake_mode_names[] = {
|
||||
[LID_WAKE_ALWAYS] = "always",
|
||||
[LID_WAKE_OPEN] = "open",
|
||||
[LID_WAKE_CLOSE] = "close",
|
||||
};
|
||||
|
||||
static void battery_status_changed(void)
|
||||
{
|
||||
struct power_supply *psy = power_supply_get_by_name("olpc-battery");
|
||||
|
||||
if (psy) {
|
||||
power_supply_changed(psy);
|
||||
put_device(psy->dev);
|
||||
}
|
||||
}
|
||||
|
||||
static void ac_status_changed(void)
|
||||
{
|
||||
struct power_supply *psy = power_supply_get_by_name("olpc-ac");
|
||||
|
||||
if (psy) {
|
||||
power_supply_changed(psy);
|
||||
put_device(psy->dev);
|
||||
}
|
||||
}
|
||||
|
||||
/* Report current ebook switch state through input layer */
|
||||
static void send_ebook_state(void)
|
||||
{
|
||||
unsigned char state;
|
||||
|
||||
if (olpc_ec_cmd(EC_READ_EB_MODE, NULL, 0, &state, 1)) {
|
||||
pr_err(PFX "failed to get ebook state\n");
|
||||
return;
|
||||
}
|
||||
|
||||
input_report_switch(ebook_switch_idev, SW_TABLET_MODE, state);
|
||||
input_sync(ebook_switch_idev);
|
||||
}
|
||||
|
||||
static void flip_lid_inverter(void)
|
||||
{
|
||||
/* gpio is high; invert so we'll get l->h event interrupt */
|
||||
if (lid_inverted)
|
||||
cs5535_gpio_clear(OLPC_GPIO_LID, GPIO_INPUT_INVERT);
|
||||
else
|
||||
cs5535_gpio_set(OLPC_GPIO_LID, GPIO_INPUT_INVERT);
|
||||
lid_inverted = !lid_inverted;
|
||||
}
|
||||
|
||||
static void detect_lid_state(void)
|
||||
{
|
||||
/*
|
||||
* the edge detector hookup on the gpio inputs on the geode is
|
||||
* odd, to say the least. See http://dev.laptop.org/ticket/5703
|
||||
* for details, but in a nutshell: we don't use the edge
|
||||
* detectors. instead, we make use of an anomoly: with the both
|
||||
* edge detectors turned off, we still get an edge event on a
|
||||
* positive edge transition. to take advantage of this, we use the
|
||||
* front-end inverter to ensure that that's the edge we're always
|
||||
* going to see next.
|
||||
*/
|
||||
|
||||
int state;
|
||||
|
||||
state = cs5535_gpio_isset(OLPC_GPIO_LID, GPIO_READ_BACK);
|
||||
lid_open = !state ^ !lid_inverted; /* x ^^ y */
|
||||
if (!state)
|
||||
return;
|
||||
|
||||
flip_lid_inverter();
|
||||
}
|
||||
|
||||
/* Report current lid switch state through input layer */
|
||||
static void send_lid_state(void)
|
||||
{
|
||||
input_report_switch(lid_switch_idev, SW_LID, !lid_open);
|
||||
input_sync(lid_switch_idev);
|
||||
}
|
||||
|
||||
static ssize_t lid_wake_mode_show(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
const char *mode = lid_wake_mode_names[lid_wake_mode];
|
||||
return sprintf(buf, "%s\n", mode);
|
||||
}
|
||||
static ssize_t lid_wake_mode_set(struct device *dev,
|
||||
struct device_attribute *attr,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
int i;
|
||||
for (i = 0; i < ARRAY_SIZE(lid_wake_mode_names); i++) {
|
||||
const char *mode = lid_wake_mode_names[i];
|
||||
if (strlen(mode) != count || strncasecmp(mode, buf, count))
|
||||
continue;
|
||||
|
||||
lid_wake_mode = i;
|
||||
return count;
|
||||
}
|
||||
return -EINVAL;
|
||||
}
|
||||
static DEVICE_ATTR(lid_wake_mode, S_IWUSR | S_IRUGO, lid_wake_mode_show,
|
||||
lid_wake_mode_set);
|
||||
|
||||
/*
|
||||
* Process all items in the EC's SCI queue.
|
||||
*
|
||||
* This is handled in a workqueue because olpc_ec_cmd can be slow (and
|
||||
* can even timeout).
|
||||
*
|
||||
* If propagate_events is false, the queue is drained without events being
|
||||
* generated for the interrupts.
|
||||
*/
|
||||
static void process_sci_queue(bool propagate_events)
|
||||
{
|
||||
int r;
|
||||
u16 data;
|
||||
|
||||
do {
|
||||
r = olpc_ec_sci_query(&data);
|
||||
if (r || !data)
|
||||
break;
|
||||
|
||||
pr_debug(PFX "SCI 0x%x received\n", data);
|
||||
|
||||
switch (data) {
|
||||
case EC_SCI_SRC_BATERR:
|
||||
case EC_SCI_SRC_BATSOC:
|
||||
case EC_SCI_SRC_BATTERY:
|
||||
case EC_SCI_SRC_BATCRIT:
|
||||
battery_status_changed();
|
||||
break;
|
||||
case EC_SCI_SRC_ACPWR:
|
||||
ac_status_changed();
|
||||
break;
|
||||
}
|
||||
|
||||
if (data == EC_SCI_SRC_EBOOK && propagate_events)
|
||||
send_ebook_state();
|
||||
} while (data);
|
||||
|
||||
if (r)
|
||||
pr_err(PFX "Failed to clear SCI queue");
|
||||
}
|
||||
|
||||
static void process_sci_queue_work(struct work_struct *work)
|
||||
{
|
||||
process_sci_queue(true);
|
||||
}
|
||||
|
||||
static DECLARE_WORK(sci_work, process_sci_queue_work);
|
||||
|
||||
static irqreturn_t xo1_sci_intr(int irq, void *dev_id)
|
||||
{
|
||||
struct platform_device *pdev = dev_id;
|
||||
u32 sts;
|
||||
u32 gpe;
|
||||
|
||||
sts = inl(acpi_base + CS5536_PM1_STS);
|
||||
outl(sts | 0xffff, acpi_base + CS5536_PM1_STS);
|
||||
|
||||
gpe = inl(acpi_base + CS5536_PM_GPE0_STS);
|
||||
outl(0xffffffff, acpi_base + CS5536_PM_GPE0_STS);
|
||||
|
||||
dev_dbg(&pdev->dev, "sts %x gpe %x\n", sts, gpe);
|
||||
|
||||
if (sts & CS5536_PWRBTN_FLAG && !(sts & CS5536_WAK_FLAG)) {
|
||||
input_report_key(power_button_idev, KEY_POWER, 1);
|
||||
input_sync(power_button_idev);
|
||||
input_report_key(power_button_idev, KEY_POWER, 0);
|
||||
input_sync(power_button_idev);
|
||||
}
|
||||
|
||||
if (gpe & CS5536_GPIOM7_PME_FLAG) { /* EC GPIO */
|
||||
cs5535_gpio_set(OLPC_GPIO_ECSCI, GPIO_NEGATIVE_EDGE_STS);
|
||||
schedule_work(&sci_work);
|
||||
}
|
||||
|
||||
cs5535_gpio_set(OLPC_GPIO_LID, GPIO_NEGATIVE_EDGE_STS);
|
||||
cs5535_gpio_set(OLPC_GPIO_LID, GPIO_POSITIVE_EDGE_STS);
|
||||
detect_lid_state();
|
||||
send_lid_state();
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static int xo1_sci_suspend(struct platform_device *pdev, pm_message_t state)
|
||||
{
|
||||
if (device_may_wakeup(&power_button_idev->dev))
|
||||
olpc_xo1_pm_wakeup_set(CS5536_PM_PWRBTN);
|
||||
else
|
||||
olpc_xo1_pm_wakeup_clear(CS5536_PM_PWRBTN);
|
||||
|
||||
if (device_may_wakeup(&ebook_switch_idev->dev))
|
||||
olpc_ec_wakeup_set(EC_SCI_SRC_EBOOK);
|
||||
else
|
||||
olpc_ec_wakeup_clear(EC_SCI_SRC_EBOOK);
|
||||
|
||||
if (!device_may_wakeup(&lid_switch_idev->dev)) {
|
||||
cs5535_gpio_clear(OLPC_GPIO_LID, GPIO_EVENTS_ENABLE);
|
||||
} else if ((lid_open && lid_wake_mode == LID_WAKE_OPEN) ||
|
||||
(!lid_open && lid_wake_mode == LID_WAKE_CLOSE)) {
|
||||
flip_lid_inverter();
|
||||
|
||||
/* we may have just caused an event */
|
||||
cs5535_gpio_set(OLPC_GPIO_LID, GPIO_NEGATIVE_EDGE_STS);
|
||||
cs5535_gpio_set(OLPC_GPIO_LID, GPIO_POSITIVE_EDGE_STS);
|
||||
|
||||
cs5535_gpio_set(OLPC_GPIO_LID, GPIO_EVENTS_ENABLE);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int xo1_sci_resume(struct platform_device *pdev)
|
||||
{
|
||||
/*
|
||||
* We don't know what may have happened while we were asleep.
|
||||
* Reestablish our lid setup so we're sure to catch all transitions.
|
||||
*/
|
||||
detect_lid_state();
|
||||
send_lid_state();
|
||||
cs5535_gpio_set(OLPC_GPIO_LID, GPIO_EVENTS_ENABLE);
|
||||
|
||||
/* Enable all EC events */
|
||||
olpc_ec_mask_write(EC_SCI_SRC_ALL);
|
||||
|
||||
/* Power/battery status might have changed too */
|
||||
battery_status_changed();
|
||||
ac_status_changed();
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __devinit setup_sci_interrupt(struct platform_device *pdev)
|
||||
{
|
||||
u32 lo, hi;
|
||||
u32 sts;
|
||||
int r;
|
||||
|
||||
rdmsr(0x51400020, lo, hi);
|
||||
sci_irq = (lo >> 20) & 15;
|
||||
|
||||
if (sci_irq) {
|
||||
dev_info(&pdev->dev, "SCI is mapped to IRQ %d\n", sci_irq);
|
||||
} else {
|
||||
/* Zero means masked */
|
||||
dev_info(&pdev->dev, "SCI unmapped. Mapping to IRQ 3\n");
|
||||
sci_irq = 3;
|
||||
lo |= 0x00300000;
|
||||
wrmsrl(0x51400020, lo);
|
||||
}
|
||||
|
||||
/* Select level triggered in PIC */
|
||||
if (sci_irq < 8) {
|
||||
lo = inb(CS5536_PIC_INT_SEL1);
|
||||
lo |= 1 << sci_irq;
|
||||
outb(lo, CS5536_PIC_INT_SEL1);
|
||||
} else {
|
||||
lo = inb(CS5536_PIC_INT_SEL2);
|
||||
lo |= 1 << (sci_irq - 8);
|
||||
outb(lo, CS5536_PIC_INT_SEL2);
|
||||
}
|
||||
|
||||
/* Enable SCI from power button, and clear pending interrupts */
|
||||
sts = inl(acpi_base + CS5536_PM1_STS);
|
||||
outl((CS5536_PM_PWRBTN << 16) | 0xffff, acpi_base + CS5536_PM1_STS);
|
||||
|
||||
r = request_irq(sci_irq, xo1_sci_intr, 0, DRV_NAME, pdev);
|
||||
if (r)
|
||||
dev_err(&pdev->dev, "can't request interrupt\n");
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
static int __devinit setup_ec_sci(void)
|
||||
{
|
||||
int r;
|
||||
|
||||
r = gpio_request(OLPC_GPIO_ECSCI, "OLPC-ECSCI");
|
||||
if (r)
|
||||
return r;
|
||||
|
||||
gpio_direction_input(OLPC_GPIO_ECSCI);
|
||||
|
||||
/* Clear pending EC SCI events */
|
||||
cs5535_gpio_set(OLPC_GPIO_ECSCI, GPIO_NEGATIVE_EDGE_STS);
|
||||
cs5535_gpio_set(OLPC_GPIO_ECSCI, GPIO_POSITIVE_EDGE_STS);
|
||||
|
||||
/*
|
||||
* Enable EC SCI events, and map them to both a PME and the SCI
|
||||
* interrupt.
|
||||
*
|
||||
* Ordinarily, in addition to functioning as GPIOs, Geode GPIOs can
|
||||
* be mapped to regular interrupts *or* Geode-specific Power
|
||||
* Management Events (PMEs) - events that bring the system out of
|
||||
* suspend. In this case, we want both of those things - the system
|
||||
* wakeup, *and* the ability to get an interrupt when an event occurs.
|
||||
*
|
||||
* To achieve this, we map the GPIO to a PME, and then we use one
|
||||
* of the many generic knobs on the CS5535 PIC to additionally map the
|
||||
* PME to the regular SCI interrupt line.
|
||||
*/
|
||||
cs5535_gpio_set(OLPC_GPIO_ECSCI, GPIO_EVENTS_ENABLE);
|
||||
|
||||
/* Set the SCI to cause a PME event on group 7 */
|
||||
cs5535_gpio_setup_event(OLPC_GPIO_ECSCI, 7, 1);
|
||||
|
||||
/* And have group 7 also fire the SCI interrupt */
|
||||
cs5535_pic_unreqz_select_high(7, sci_irq);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void free_ec_sci(void)
|
||||
{
|
||||
gpio_free(OLPC_GPIO_ECSCI);
|
||||
}
|
||||
|
||||
static int __devinit setup_lid_events(void)
|
||||
{
|
||||
int r;
|
||||
|
||||
r = gpio_request(OLPC_GPIO_LID, "OLPC-LID");
|
||||
if (r)
|
||||
return r;
|
||||
|
||||
gpio_direction_input(OLPC_GPIO_LID);
|
||||
|
||||
cs5535_gpio_clear(OLPC_GPIO_LID, GPIO_INPUT_INVERT);
|
||||
lid_inverted = 0;
|
||||
|
||||
/* Clear edge detection and event enable for now */
|
||||
cs5535_gpio_clear(OLPC_GPIO_LID, GPIO_EVENTS_ENABLE);
|
||||
cs5535_gpio_clear(OLPC_GPIO_LID, GPIO_NEGATIVE_EDGE_EN);
|
||||
cs5535_gpio_clear(OLPC_GPIO_LID, GPIO_POSITIVE_EDGE_EN);
|
||||
cs5535_gpio_set(OLPC_GPIO_LID, GPIO_NEGATIVE_EDGE_STS);
|
||||
cs5535_gpio_set(OLPC_GPIO_LID, GPIO_POSITIVE_EDGE_STS);
|
||||
|
||||
/* Set the LID to cause an PME event on group 6 */
|
||||
cs5535_gpio_setup_event(OLPC_GPIO_LID, 6, 1);
|
||||
|
||||
/* Set PME group 6 to fire the SCI interrupt */
|
||||
cs5535_gpio_set_irq(6, sci_irq);
|
||||
|
||||
/* Enable the event */
|
||||
cs5535_gpio_set(OLPC_GPIO_LID, GPIO_EVENTS_ENABLE);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void free_lid_events(void)
|
||||
{
|
||||
gpio_free(OLPC_GPIO_LID);
|
||||
}
|
||||
|
||||
static int __devinit setup_power_button(struct platform_device *pdev)
|
||||
{
|
||||
int r;
|
||||
|
||||
power_button_idev = input_allocate_device();
|
||||
if (!power_button_idev)
|
||||
return -ENOMEM;
|
||||
|
||||
power_button_idev->name = "Power Button";
|
||||
power_button_idev->phys = DRV_NAME "/input0";
|
||||
set_bit(EV_KEY, power_button_idev->evbit);
|
||||
set_bit(KEY_POWER, power_button_idev->keybit);
|
||||
|
||||
power_button_idev->dev.parent = &pdev->dev;
|
||||
device_init_wakeup(&power_button_idev->dev, 1);
|
||||
|
||||
r = input_register_device(power_button_idev);
|
||||
if (r) {
|
||||
dev_err(&pdev->dev, "failed to register power button: %d\n", r);
|
||||
input_free_device(power_button_idev);
|
||||
}
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
static void free_power_button(void)
|
||||
{
|
||||
input_unregister_device(power_button_idev);
|
||||
input_free_device(power_button_idev);
|
||||
}
|
||||
|
||||
static int __devinit setup_ebook_switch(struct platform_device *pdev)
|
||||
{
|
||||
int r;
|
||||
|
||||
ebook_switch_idev = input_allocate_device();
|
||||
if (!ebook_switch_idev)
|
||||
return -ENOMEM;
|
||||
|
||||
ebook_switch_idev->name = "EBook Switch";
|
||||
ebook_switch_idev->phys = DRV_NAME "/input1";
|
||||
set_bit(EV_SW, ebook_switch_idev->evbit);
|
||||
set_bit(SW_TABLET_MODE, ebook_switch_idev->swbit);
|
||||
|
||||
ebook_switch_idev->dev.parent = &pdev->dev;
|
||||
device_set_wakeup_capable(&ebook_switch_idev->dev, true);
|
||||
|
||||
r = input_register_device(ebook_switch_idev);
|
||||
if (r) {
|
||||
dev_err(&pdev->dev, "failed to register ebook switch: %d\n", r);
|
||||
input_free_device(ebook_switch_idev);
|
||||
}
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
static void free_ebook_switch(void)
|
||||
{
|
||||
input_unregister_device(ebook_switch_idev);
|
||||
input_free_device(ebook_switch_idev);
|
||||
}
|
||||
|
||||
static int __devinit setup_lid_switch(struct platform_device *pdev)
|
||||
{
|
||||
int r;
|
||||
|
||||
lid_switch_idev = input_allocate_device();
|
||||
if (!lid_switch_idev)
|
||||
return -ENOMEM;
|
||||
|
||||
lid_switch_idev->name = "Lid Switch";
|
||||
lid_switch_idev->phys = DRV_NAME "/input2";
|
||||
set_bit(EV_SW, lid_switch_idev->evbit);
|
||||
set_bit(SW_LID, lid_switch_idev->swbit);
|
||||
|
||||
lid_switch_idev->dev.parent = &pdev->dev;
|
||||
device_set_wakeup_capable(&lid_switch_idev->dev, true);
|
||||
|
||||
r = input_register_device(lid_switch_idev);
|
||||
if (r) {
|
||||
dev_err(&pdev->dev, "failed to register lid switch: %d\n", r);
|
||||
goto err_register;
|
||||
}
|
||||
|
||||
r = device_create_file(&lid_switch_idev->dev, &dev_attr_lid_wake_mode);
|
||||
if (r) {
|
||||
dev_err(&pdev->dev, "failed to create wake mode attr: %d\n", r);
|
||||
goto err_create_attr;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
err_create_attr:
|
||||
input_unregister_device(lid_switch_idev);
|
||||
err_register:
|
||||
input_free_device(lid_switch_idev);
|
||||
return r;
|
||||
}
|
||||
|
||||
static void free_lid_switch(void)
|
||||
{
|
||||
device_remove_file(&lid_switch_idev->dev, &dev_attr_lid_wake_mode);
|
||||
input_unregister_device(lid_switch_idev);
|
||||
input_free_device(lid_switch_idev);
|
||||
}
|
||||
|
||||
static int __devinit xo1_sci_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct resource *res;
|
||||
int r;
|
||||
|
||||
/* don't run on non-XOs */
|
||||
if (!machine_is_olpc())
|
||||
return -ENODEV;
|
||||
|
||||
r = mfd_cell_enable(pdev);
|
||||
if (r)
|
||||
return r;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
|
||||
if (!res) {
|
||||
dev_err(&pdev->dev, "can't fetch device resource info\n");
|
||||
return -EIO;
|
||||
}
|
||||
acpi_base = res->start;
|
||||
|
||||
r = setup_power_button(pdev);
|
||||
if (r)
|
||||
return r;
|
||||
|
||||
r = setup_ebook_switch(pdev);
|
||||
if (r)
|
||||
goto err_ebook;
|
||||
|
||||
r = setup_lid_switch(pdev);
|
||||
if (r)
|
||||
goto err_lid;
|
||||
|
||||
r = setup_lid_events();
|
||||
if (r)
|
||||
goto err_lidevt;
|
||||
|
||||
r = setup_ec_sci();
|
||||
if (r)
|
||||
goto err_ecsci;
|
||||
|
||||
/* Enable PME generation for EC-generated events */
|
||||
outl(CS5536_GPIOM6_PME_EN | CS5536_GPIOM7_PME_EN,
|
||||
acpi_base + CS5536_PM_GPE0_EN);
|
||||
|
||||
/* Clear pending events */
|
||||
outl(0xffffffff, acpi_base + CS5536_PM_GPE0_STS);
|
||||
process_sci_queue(false);
|
||||
|
||||
/* Initial sync */
|
||||
send_ebook_state();
|
||||
detect_lid_state();
|
||||
send_lid_state();
|
||||
|
||||
r = setup_sci_interrupt(pdev);
|
||||
if (r)
|
||||
goto err_sci;
|
||||
|
||||
/* Enable all EC events */
|
||||
olpc_ec_mask_write(EC_SCI_SRC_ALL);
|
||||
|
||||
return r;
|
||||
|
||||
err_sci:
|
||||
free_ec_sci();
|
||||
err_ecsci:
|
||||
free_lid_events();
|
||||
err_lidevt:
|
||||
free_lid_switch();
|
||||
err_lid:
|
||||
free_ebook_switch();
|
||||
err_ebook:
|
||||
free_power_button();
|
||||
return r;
|
||||
}
|
||||
|
||||
static int __devexit xo1_sci_remove(struct platform_device *pdev)
|
||||
{
|
||||
mfd_cell_disable(pdev);
|
||||
free_irq(sci_irq, pdev);
|
||||
cancel_work_sync(&sci_work);
|
||||
free_ec_sci();
|
||||
free_lid_events();
|
||||
free_lid_switch();
|
||||
free_ebook_switch();
|
||||
free_power_button();
|
||||
acpi_base = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver xo1_sci_driver = {
|
||||
.driver = {
|
||||
.name = "olpc-xo1-sci-acpi",
|
||||
},
|
||||
.probe = xo1_sci_probe,
|
||||
.remove = __devexit_p(xo1_sci_remove),
|
||||
.suspend = xo1_sci_suspend,
|
||||
.resume = xo1_sci_resume,
|
||||
};
|
||||
|
||||
static int __init xo1_sci_init(void)
|
||||
{
|
||||
return platform_driver_register(&xo1_sci_driver);
|
||||
}
|
||||
arch_initcall(xo1_sci_init);
|
||||
|
|
@ -1,146 +0,0 @@
|
|||
/*
|
||||
* Support for features of the OLPC XO-1 laptop
|
||||
*
|
||||
* Copyright (C) 2010 Andres Salomon <dilinger@queued.net>
|
||||
* Copyright (C) 2010 One Laptop per Child
|
||||
* Copyright (C) 2006 Red Hat, Inc.
|
||||
* Copyright (C) 2006 Advanced Micro Devices, Inc.
|
||||
*
|
||||
* 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; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/pm.h>
|
||||
#include <linux/mfd/core.h>
|
||||
|
||||
#include <asm/io.h>
|
||||
#include <asm/olpc.h>
|
||||
|
||||
#define DRV_NAME "olpc-xo1"
|
||||
|
||||
/* PMC registers (PMS block) */
|
||||
#define PM_SCLK 0x10
|
||||
#define PM_IN_SLPCTL 0x20
|
||||
#define PM_WKXD 0x34
|
||||
#define PM_WKD 0x30
|
||||
#define PM_SSC 0x54
|
||||
|
||||
/* PM registers (ACPI block) */
|
||||
#define PM1_CNT 0x08
|
||||
#define PM_GPE0_STS 0x18
|
||||
|
||||
static unsigned long acpi_base;
|
||||
static unsigned long pms_base;
|
||||
|
||||
static void xo1_power_off(void)
|
||||
{
|
||||
printk(KERN_INFO "OLPC XO-1 power off sequence...\n");
|
||||
|
||||
/* Enable all of these controls with 0 delay */
|
||||
outl(0x40000000, pms_base + PM_SCLK);
|
||||
outl(0x40000000, pms_base + PM_IN_SLPCTL);
|
||||
outl(0x40000000, pms_base + PM_WKXD);
|
||||
outl(0x40000000, pms_base + PM_WKD);
|
||||
|
||||
/* Clear status bits (possibly unnecessary) */
|
||||
outl(0x0002ffff, pms_base + PM_SSC);
|
||||
outl(0xffffffff, acpi_base + PM_GPE0_STS);
|
||||
|
||||
/* Write SLP_EN bit to start the machinery */
|
||||
outl(0x00002000, acpi_base + PM1_CNT);
|
||||
}
|
||||
|
||||
static int __devinit olpc_xo1_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct resource *res;
|
||||
int err;
|
||||
|
||||
/* don't run on non-XOs */
|
||||
if (!machine_is_olpc())
|
||||
return -ENODEV;
|
||||
|
||||
err = mfd_cell_enable(pdev);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
|
||||
if (!res) {
|
||||
dev_err(&pdev->dev, "can't fetch device resource info\n");
|
||||
return -EIO;
|
||||
}
|
||||
if (strcmp(pdev->name, "cs5535-pms") == 0)
|
||||
pms_base = res->start;
|
||||
else if (strcmp(pdev->name, "olpc-xo1-pm-acpi") == 0)
|
||||
acpi_base = res->start;
|
||||
|
||||
/* If we have both addresses, we can override the poweroff hook */
|
||||
if (pms_base && acpi_base) {
|
||||
pm_power_off = xo1_power_off;
|
||||
printk(KERN_INFO "OLPC XO-1 support registered\n");
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __devexit olpc_xo1_remove(struct platform_device *pdev)
|
||||
{
|
||||
mfd_cell_disable(pdev);
|
||||
|
||||
if (strcmp(pdev->name, "cs5535-pms") == 0)
|
||||
pms_base = 0;
|
||||
else if (strcmp(pdev->name, "olpc-xo1-pm-acpi") == 0)
|
||||
acpi_base = 0;
|
||||
|
||||
pm_power_off = NULL;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver cs5535_pms_drv = {
|
||||
.driver = {
|
||||
.name = "cs5535-pms",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = olpc_xo1_probe,
|
||||
.remove = __devexit_p(olpc_xo1_remove),
|
||||
};
|
||||
|
||||
static struct platform_driver cs5535_acpi_drv = {
|
||||
.driver = {
|
||||
.name = "olpc-xo1-pm-acpi",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = olpc_xo1_probe,
|
||||
.remove = __devexit_p(olpc_xo1_remove),
|
||||
};
|
||||
|
||||
static int __init olpc_xo1_init(void)
|
||||
{
|
||||
int r;
|
||||
|
||||
r = platform_driver_register(&cs5535_pms_drv);
|
||||
if (r)
|
||||
return r;
|
||||
|
||||
r = platform_driver_register(&cs5535_acpi_drv);
|
||||
if (r)
|
||||
platform_driver_unregister(&cs5535_pms_drv);
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
static void __exit olpc_xo1_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&cs5535_acpi_drv);
|
||||
platform_driver_unregister(&cs5535_pms_drv);
|
||||
}
|
||||
|
||||
MODULE_AUTHOR("Daniel Drake <dsd@laptop.org>");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_ALIAS("platform:cs5535-pms");
|
||||
|
||||
module_init(olpc_xo1_init);
|
||||
module_exit(olpc_xo1_exit);
|
||||
|
|
@ -0,0 +1,168 @@
|
|||
/*
|
||||
* Support for OLPC XO-1.5 System Control Interrupts (SCI)
|
||||
*
|
||||
* Copyright (C) 2009-2010 One Laptop per Child
|
||||
*
|
||||
* 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; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*/
|
||||
|
||||
#include <linux/device.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/workqueue.h>
|
||||
#include <linux/power_supply.h>
|
||||
|
||||
#include <acpi/acpi_bus.h>
|
||||
#include <acpi/acpi_drivers.h>
|
||||
#include <asm/olpc.h>
|
||||
|
||||
#define DRV_NAME "olpc-xo15-sci"
|
||||
#define PFX DRV_NAME ": "
|
||||
#define XO15_SCI_CLASS DRV_NAME
|
||||
#define XO15_SCI_DEVICE_NAME "OLPC XO-1.5 SCI"
|
||||
|
||||
static unsigned long xo15_sci_gpe;
|
||||
|
||||
static void battery_status_changed(void)
|
||||
{
|
||||
struct power_supply *psy = power_supply_get_by_name("olpc-battery");
|
||||
|
||||
if (psy) {
|
||||
power_supply_changed(psy);
|
||||
put_device(psy->dev);
|
||||
}
|
||||
}
|
||||
|
||||
static void ac_status_changed(void)
|
||||
{
|
||||
struct power_supply *psy = power_supply_get_by_name("olpc-ac");
|
||||
|
||||
if (psy) {
|
||||
power_supply_changed(psy);
|
||||
put_device(psy->dev);
|
||||
}
|
||||
}
|
||||
|
||||
static void process_sci_queue(void)
|
||||
{
|
||||
u16 data;
|
||||
int r;
|
||||
|
||||
do {
|
||||
r = olpc_ec_sci_query(&data);
|
||||
if (r || !data)
|
||||
break;
|
||||
|
||||
pr_debug(PFX "SCI 0x%x received\n", data);
|
||||
|
||||
switch (data) {
|
||||
case EC_SCI_SRC_BATERR:
|
||||
case EC_SCI_SRC_BATSOC:
|
||||
case EC_SCI_SRC_BATTERY:
|
||||
case EC_SCI_SRC_BATCRIT:
|
||||
battery_status_changed();
|
||||
break;
|
||||
case EC_SCI_SRC_ACPWR:
|
||||
ac_status_changed();
|
||||
break;
|
||||
}
|
||||
} while (data);
|
||||
|
||||
if (r)
|
||||
pr_err(PFX "Failed to clear SCI queue");
|
||||
}
|
||||
|
||||
static void process_sci_queue_work(struct work_struct *work)
|
||||
{
|
||||
process_sci_queue();
|
||||
}
|
||||
|
||||
static DECLARE_WORK(sci_work, process_sci_queue_work);
|
||||
|
||||
static u32 xo15_sci_gpe_handler(acpi_handle gpe_device, u32 gpe, void *context)
|
||||
{
|
||||
schedule_work(&sci_work);
|
||||
return ACPI_INTERRUPT_HANDLED | ACPI_REENABLE_GPE;
|
||||
}
|
||||
|
||||
static int xo15_sci_add(struct acpi_device *device)
|
||||
{
|
||||
unsigned long long tmp;
|
||||
acpi_status status;
|
||||
|
||||
if (!device)
|
||||
return -EINVAL;
|
||||
|
||||
strcpy(acpi_device_name(device), XO15_SCI_DEVICE_NAME);
|
||||
strcpy(acpi_device_class(device), XO15_SCI_CLASS);
|
||||
|
||||
/* Get GPE bit assignment (EC events). */
|
||||
status = acpi_evaluate_integer(device->handle, "_GPE", NULL, &tmp);
|
||||
if (ACPI_FAILURE(status))
|
||||
return -EINVAL;
|
||||
|
||||
xo15_sci_gpe = tmp;
|
||||
status = acpi_install_gpe_handler(NULL, xo15_sci_gpe,
|
||||
ACPI_GPE_EDGE_TRIGGERED,
|
||||
xo15_sci_gpe_handler, device);
|
||||
if (ACPI_FAILURE(status))
|
||||
return -ENODEV;
|
||||
|
||||
dev_info(&device->dev, "Initialized, GPE = 0x%lx\n", xo15_sci_gpe);
|
||||
|
||||
/* Flush queue, and enable all SCI events */
|
||||
process_sci_queue();
|
||||
olpc_ec_mask_write(EC_SCI_SRC_ALL);
|
||||
|
||||
acpi_enable_gpe(NULL, xo15_sci_gpe);
|
||||
|
||||
/* Enable wake-on-EC */
|
||||
if (device->wakeup.flags.valid)
|
||||
device_init_wakeup(&device->dev, true);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int xo15_sci_remove(struct acpi_device *device, int type)
|
||||
{
|
||||
acpi_disable_gpe(NULL, xo15_sci_gpe);
|
||||
acpi_remove_gpe_handler(NULL, xo15_sci_gpe, xo15_sci_gpe_handler);
|
||||
cancel_work_sync(&sci_work);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int xo15_sci_resume(struct acpi_device *device)
|
||||
{
|
||||
/* Enable all EC events */
|
||||
olpc_ec_mask_write(EC_SCI_SRC_ALL);
|
||||
|
||||
/* Power/battery status might have changed */
|
||||
battery_status_changed();
|
||||
ac_status_changed();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct acpi_device_id xo15_sci_device_ids[] = {
|
||||
{"XO15EC", 0},
|
||||
{"", 0},
|
||||
};
|
||||
|
||||
static struct acpi_driver xo15_sci_drv = {
|
||||
.name = DRV_NAME,
|
||||
.class = XO15_SCI_CLASS,
|
||||
.ids = xo15_sci_device_ids,
|
||||
.ops = {
|
||||
.add = xo15_sci_add,
|
||||
.remove = xo15_sci_remove,
|
||||
.resume = xo15_sci_resume,
|
||||
},
|
||||
};
|
||||
|
||||
static int __init xo15_sci_init(void)
|
||||
{
|
||||
return acpi_bus_register_driver(&xo15_sci_drv);
|
||||
}
|
||||
device_initcall(xo15_sci_init);
|
||||
|
|
@ -19,6 +19,7 @@
|
|||
#include <linux/string.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/syscore_ops.h>
|
||||
|
||||
#include <asm/geode.h>
|
||||
#include <asm/setup.h>
|
||||
|
|
@ -30,6 +31,9 @@ EXPORT_SYMBOL_GPL(olpc_platform_info);
|
|||
|
||||
static DEFINE_SPINLOCK(ec_lock);
|
||||
|
||||
/* EC event mask to be applied during suspend (defining wakeup sources). */
|
||||
static u16 ec_wakeup_mask;
|
||||
|
||||
/* what the timeout *should* be (in ms) */
|
||||
#define EC_BASE_TIMEOUT 20
|
||||
|
||||
|
|
@ -188,6 +192,88 @@ err:
|
|||
}
|
||||
EXPORT_SYMBOL_GPL(olpc_ec_cmd);
|
||||
|
||||
void olpc_ec_wakeup_set(u16 value)
|
||||
{
|
||||
ec_wakeup_mask |= value;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(olpc_ec_wakeup_set);
|
||||
|
||||
void olpc_ec_wakeup_clear(u16 value)
|
||||
{
|
||||
ec_wakeup_mask &= ~value;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(olpc_ec_wakeup_clear);
|
||||
|
||||
/*
|
||||
* Returns true if the compile and runtime configurations allow for EC events
|
||||
* to wake the system.
|
||||
*/
|
||||
bool olpc_ec_wakeup_available(void)
|
||||
{
|
||||
if (!machine_is_olpc())
|
||||
return false;
|
||||
|
||||
/*
|
||||
* XO-1 EC wakeups are available when olpc-xo1-sci driver is
|
||||
* compiled in
|
||||
*/
|
||||
#ifdef CONFIG_OLPC_XO1_SCI
|
||||
if (olpc_platform_info.boardrev < olpc_board_pre(0xd0)) /* XO-1 */
|
||||
return true;
|
||||
#endif
|
||||
|
||||
/*
|
||||
* XO-1.5 EC wakeups are available when olpc-xo15-sci driver is
|
||||
* compiled in
|
||||
*/
|
||||
#ifdef CONFIG_OLPC_XO15_SCI
|
||||
if (olpc_platform_info.boardrev >= olpc_board_pre(0xd0)) /* XO-1.5 */
|
||||
return true;
|
||||
#endif
|
||||
|
||||
return false;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(olpc_ec_wakeup_available);
|
||||
|
||||
int olpc_ec_mask_write(u16 bits)
|
||||
{
|
||||
if (olpc_platform_info.flags & OLPC_F_EC_WIDE_SCI) {
|
||||
__be16 ec_word = cpu_to_be16(bits);
|
||||
return olpc_ec_cmd(EC_WRITE_EXT_SCI_MASK, (void *) &ec_word, 2,
|
||||
NULL, 0);
|
||||
} else {
|
||||
unsigned char ec_byte = bits & 0xff;
|
||||
return olpc_ec_cmd(EC_WRITE_SCI_MASK, &ec_byte, 1, NULL, 0);
|
||||
}
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(olpc_ec_mask_write);
|
||||
|
||||
int olpc_ec_sci_query(u16 *sci_value)
|
||||
{
|
||||
int ret;
|
||||
|
||||
if (olpc_platform_info.flags & OLPC_F_EC_WIDE_SCI) {
|
||||
__be16 ec_word;
|
||||
ret = olpc_ec_cmd(EC_EXT_SCI_QUERY,
|
||||
NULL, 0, (void *) &ec_word, 2);
|
||||
if (ret == 0)
|
||||
*sci_value = be16_to_cpu(ec_word);
|
||||
} else {
|
||||
unsigned char ec_byte;
|
||||
ret = olpc_ec_cmd(EC_SCI_QUERY, NULL, 0, &ec_byte, 1);
|
||||
if (ret == 0)
|
||||
*sci_value = ec_byte;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(olpc_ec_sci_query);
|
||||
|
||||
static int olpc_ec_suspend(void)
|
||||
{
|
||||
return olpc_ec_mask_write(ec_wakeup_mask);
|
||||
}
|
||||
|
||||
static bool __init check_ofw_architecture(struct device_node *root)
|
||||
{
|
||||
const char *olpc_arch;
|
||||
|
|
@ -242,6 +328,10 @@ static int __init add_xo1_platform_devices(void)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static struct syscore_ops olpc_syscore_ops = {
|
||||
.suspend = olpc_ec_suspend,
|
||||
};
|
||||
|
||||
static int __init olpc_init(void)
|
||||
{
|
||||
int r = 0;
|
||||
|
|
@ -266,6 +356,9 @@ static int __init olpc_init(void)
|
|||
!cs5535_has_vsa2())
|
||||
x86_init.pci.arch_init = pci_olpc_init;
|
||||
#endif
|
||||
/* EC version 0x5f adds support for wide SCI mask */
|
||||
if (olpc_platform_info.ecver >= 0x5f)
|
||||
olpc_platform_info.flags |= OLPC_F_EC_WIDE_SCI;
|
||||
|
||||
printk(KERN_INFO "OLPC board revision %s%X (EC=%x)\n",
|
||||
((olpc_platform_info.boardrev & 0xf) < 8) ? "pre" : "",
|
||||
|
|
@ -278,6 +371,8 @@ static int __init olpc_init(void)
|
|||
return r;
|
||||
}
|
||||
|
||||
register_syscore_ops(&olpc_syscore_ops);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -165,6 +165,107 @@ static struct of_pdt_ops prom_olpc_ops __initdata = {
|
|||
.pkg2path = olpc_dt_pkg2path,
|
||||
};
|
||||
|
||||
static phandle __init olpc_dt_finddevice(const char *path)
|
||||
{
|
||||
phandle node;
|
||||
const void *args[] = { path };
|
||||
void *res[] = { &node };
|
||||
|
||||
if (olpc_ofw("finddevice", args, res)) {
|
||||
pr_err("olpc_dt: finddevice failed!\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
if ((s32) node == -1)
|
||||
return 0;
|
||||
|
||||
return node;
|
||||
}
|
||||
|
||||
static int __init olpc_dt_interpret(const char *words)
|
||||
{
|
||||
int result;
|
||||
const void *args[] = { words };
|
||||
void *res[] = { &result };
|
||||
|
||||
if (olpc_ofw("interpret", args, res)) {
|
||||
pr_err("olpc_dt: interpret failed!\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
/*
|
||||
* Extract board revision directly from OFW device tree.
|
||||
* We can't use olpc_platform_info because that hasn't been set up yet.
|
||||
*/
|
||||
static u32 __init olpc_dt_get_board_revision(void)
|
||||
{
|
||||
phandle node;
|
||||
__be32 rev;
|
||||
int r;
|
||||
|
||||
node = olpc_dt_finddevice("/");
|
||||
if (!node)
|
||||
return 0;
|
||||
|
||||
r = olpc_dt_getproperty(node, "board-revision-int",
|
||||
(char *) &rev, sizeof(rev));
|
||||
if (r < 0)
|
||||
return 0;
|
||||
|
||||
return be32_to_cpu(rev);
|
||||
}
|
||||
|
||||
void __init olpc_dt_fixup(void)
|
||||
{
|
||||
int r;
|
||||
char buf[64];
|
||||
phandle node;
|
||||
u32 board_rev;
|
||||
|
||||
node = olpc_dt_finddevice("/battery@0");
|
||||
if (!node)
|
||||
return;
|
||||
|
||||
/*
|
||||
* If the battery node has a compatible property, we are running a new
|
||||
* enough firmware and don't have fixups to make.
|
||||
*/
|
||||
r = olpc_dt_getproperty(node, "compatible", buf, sizeof(buf));
|
||||
if (r > 0)
|
||||
return;
|
||||
|
||||
pr_info("PROM DT: Old firmware detected, applying fixes\n");
|
||||
|
||||
/* Add olpc,xo1-battery compatible marker to battery node */
|
||||
olpc_dt_interpret("\" /battery@0\" find-device"
|
||||
" \" olpc,xo1-battery\" +compatible"
|
||||
" device-end");
|
||||
|
||||
board_rev = olpc_dt_get_board_revision();
|
||||
if (!board_rev)
|
||||
return;
|
||||
|
||||
if (board_rev >= olpc_board_pre(0xd0)) {
|
||||
/* XO-1.5: add dcon device */
|
||||
olpc_dt_interpret("\" /pci/display@1\" find-device"
|
||||
" new-device"
|
||||
" \" dcon\" device-name \" olpc,xo1-dcon\" +compatible"
|
||||
" finish-device device-end");
|
||||
} else {
|
||||
/* XO-1: add dcon device, mark RTC as olpc,xo1-rtc */
|
||||
olpc_dt_interpret("\" /pci/display@1,1\" find-device"
|
||||
" new-device"
|
||||
" \" dcon\" device-name \" olpc,xo1-dcon\" +compatible"
|
||||
" finish-device device-end"
|
||||
" \" /rtc\" find-device"
|
||||
" \" olpc,xo1-rtc\" +compatible"
|
||||
" device-end");
|
||||
}
|
||||
}
|
||||
|
||||
void __init olpc_dt_build_devicetree(void)
|
||||
{
|
||||
phandle root;
|
||||
|
|
@ -172,6 +273,8 @@ void __init olpc_dt_build_devicetree(void)
|
|||
if (!olpc_ofw_is_installed())
|
||||
return;
|
||||
|
||||
olpc_dt_fixup();
|
||||
|
||||
root = olpc_dt_getsibling(0);
|
||||
if (!root) {
|
||||
pr_err("PROM: unable to get root node from OFW!\n");
|
||||
|
|
|
|||
|
|
@ -0,0 +1,124 @@
|
|||
.text
|
||||
#include <linux/linkage.h>
|
||||
#include <asm/segment.h>
|
||||
#include <asm/page.h>
|
||||
#include <asm/pgtable_32.h>
|
||||
|
||||
.macro writepost,value
|
||||
movb $0x34, %al
|
||||
outb %al, $0x70
|
||||
movb $\value, %al
|
||||
outb %al, $0x71
|
||||
.endm
|
||||
|
||||
wakeup_start:
|
||||
# OFW lands us here, running in protected mode, with a
|
||||
# kernel-compatible GDT already setup.
|
||||
|
||||
# Clear any dangerous flags
|
||||
pushl $0
|
||||
popfl
|
||||
|
||||
writepost 0x31
|
||||
|
||||
# Set up %cr3
|
||||
movl $initial_page_table - __PAGE_OFFSET, %eax
|
||||
movl %eax, %cr3
|
||||
|
||||
movl saved_cr4, %eax
|
||||
movl %eax, %cr4
|
||||
|
||||
movl saved_cr0, %eax
|
||||
movl %eax, %cr0
|
||||
|
||||
# Control registers were modified, pipeline resync is needed
|
||||
jmp 1f
|
||||
1:
|
||||
|
||||
movw $__KERNEL_DS, %ax
|
||||
movw %ax, %ss
|
||||
movw %ax, %ds
|
||||
movw %ax, %es
|
||||
movw %ax, %fs
|
||||
movw %ax, %gs
|
||||
|
||||
lgdt saved_gdt
|
||||
lidt saved_idt
|
||||
lldt saved_ldt
|
||||
ljmp $(__KERNEL_CS),$1f
|
||||
1:
|
||||
movl %cr3, %eax
|
||||
movl %eax, %cr3
|
||||
wbinvd
|
||||
|
||||
# Go back to the return point
|
||||
jmp ret_point
|
||||
|
||||
save_registers:
|
||||
sgdt saved_gdt
|
||||
sidt saved_idt
|
||||
sldt saved_ldt
|
||||
|
||||
pushl %edx
|
||||
movl %cr4, %edx
|
||||
movl %edx, saved_cr4
|
||||
|
||||
movl %cr0, %edx
|
||||
movl %edx, saved_cr0
|
||||
|
||||
popl %edx
|
||||
|
||||
movl %ebx, saved_context_ebx
|
||||
movl %ebp, saved_context_ebp
|
||||
movl %esi, saved_context_esi
|
||||
movl %edi, saved_context_edi
|
||||
|
||||
pushfl
|
||||
popl saved_context_eflags
|
||||
|
||||
ret
|
||||
|
||||
restore_registers:
|
||||
movl saved_context_ebp, %ebp
|
||||
movl saved_context_ebx, %ebx
|
||||
movl saved_context_esi, %esi
|
||||
movl saved_context_edi, %edi
|
||||
|
||||
pushl saved_context_eflags
|
||||
popfl
|
||||
|
||||
ret
|
||||
|
||||
ENTRY(do_olpc_suspend_lowlevel)
|
||||
call save_processor_state
|
||||
call save_registers
|
||||
|
||||
# This is the stack context we want to remember
|
||||
movl %esp, saved_context_esp
|
||||
|
||||
pushl $3
|
||||
call xo1_do_sleep
|
||||
|
||||
jmp wakeup_start
|
||||
.p2align 4,,7
|
||||
ret_point:
|
||||
movl saved_context_esp, %esp
|
||||
|
||||
writepost 0x32
|
||||
|
||||
call restore_registers
|
||||
call restore_processor_state
|
||||
ret
|
||||
|
||||
.data
|
||||
saved_gdt: .long 0,0
|
||||
saved_idt: .long 0,0
|
||||
saved_ldt: .long 0
|
||||
saved_cr4: .long 0
|
||||
saved_cr0: .long 0
|
||||
saved_context_esp: .long 0
|
||||
saved_context_edi: .long 0
|
||||
saved_context_esi: .long 0
|
||||
saved_context_ebx: .long 0
|
||||
saved_context_ebp: .long 0
|
||||
saved_context_eflags: .long 0
|
||||
|
|
@ -11,6 +11,8 @@
|
|||
#ifndef _CS5535_H
|
||||
#define _CS5535_H
|
||||
|
||||
#include <asm/msr.h>
|
||||
|
||||
/* MSRs */
|
||||
#define MSR_GLIU_P2D_RO0 0x10000029
|
||||
|
||||
|
|
@ -38,17 +40,75 @@
|
|||
#define MSR_MFGPT_NR 0x51400029
|
||||
#define MSR_MFGPT_SETUP 0x5140002B
|
||||
|
||||
#define MSR_RTC_DOMA_OFFSET 0x51400055
|
||||
#define MSR_RTC_MONA_OFFSET 0x51400056
|
||||
#define MSR_RTC_CEN_OFFSET 0x51400057
|
||||
|
||||
#define MSR_LX_SPARE_MSR 0x80000011 /* DC-specific */
|
||||
|
||||
#define MSR_GX_GLD_MSR_CONFIG 0xC0002001
|
||||
#define MSR_GX_MSR_PADSEL 0xC0002011
|
||||
|
||||
static inline int cs5535_pic_unreqz_select_high(unsigned int group,
|
||||
unsigned int irq)
|
||||
{
|
||||
uint32_t lo, hi;
|
||||
|
||||
rdmsr(MSR_PIC_ZSEL_HIGH, lo, hi);
|
||||
lo &= ~(0xF << (group * 4));
|
||||
lo |= (irq & 0xF) << (group * 4);
|
||||
wrmsr(MSR_PIC_ZSEL_HIGH, lo, hi);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* PIC registers */
|
||||
#define CS5536_PIC_INT_SEL1 0x4d0
|
||||
#define CS5536_PIC_INT_SEL2 0x4d1
|
||||
|
||||
/* resource sizes */
|
||||
#define LBAR_GPIO_SIZE 0xFF
|
||||
#define LBAR_MFGPT_SIZE 0x40
|
||||
#define LBAR_ACPI_SIZE 0x40
|
||||
#define LBAR_PMS_SIZE 0x80
|
||||
|
||||
/*
|
||||
* PMC registers (PMS block)
|
||||
* It is only safe to access these registers as dword accesses.
|
||||
* See CS5536 Specification Update erratas 17 & 18
|
||||
*/
|
||||
#define CS5536_PM_SCLK 0x10
|
||||
#define CS5536_PM_IN_SLPCTL 0x20
|
||||
#define CS5536_PM_WKXD 0x34
|
||||
#define CS5536_PM_WKD 0x30
|
||||
#define CS5536_PM_SSC 0x54
|
||||
|
||||
/*
|
||||
* PM registers (ACPI block)
|
||||
* It is only safe to access these registers as dword accesses.
|
||||
* See CS5536 Specification Update erratas 17 & 18
|
||||
*/
|
||||
#define CS5536_PM1_STS 0x00
|
||||
#define CS5536_PM1_EN 0x02
|
||||
#define CS5536_PM1_CNT 0x08
|
||||
#define CS5536_PM_GPE0_STS 0x18
|
||||
#define CS5536_PM_GPE0_EN 0x1c
|
||||
|
||||
/* CS5536_PM1_STS bits */
|
||||
#define CS5536_WAK_FLAG (1 << 15)
|
||||
#define CS5536_PWRBTN_FLAG (1 << 8)
|
||||
|
||||
/* CS5536_PM1_EN bits */
|
||||
#define CS5536_PM_PWRBTN (1 << 8)
|
||||
#define CS5536_PM_RTC (1 << 10)
|
||||
|
||||
/* CS5536_PM_GPE0_STS bits */
|
||||
#define CS5536_GPIOM7_PME_FLAG (1 << 31)
|
||||
#define CS5536_GPIOM6_PME_FLAG (1 << 30)
|
||||
|
||||
/* CS5536_PM_GPE0_EN bits */
|
||||
#define CS5536_GPIOM7_PME_EN (1 << 31)
|
||||
#define CS5536_GPIOM6_PME_EN (1 << 30)
|
||||
|
||||
/* VSA2 magic values */
|
||||
#define VSA_VRC_INDEX 0xAC1C
|
||||
#define VSA_VRC_DATA 0xAC1E
|
||||
|
|
|
|||
Loading…
Reference in New Issue