2673 lines
64 KiB
C
2673 lines
64 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Device driver for the PMU in Apple PowerBooks and PowerMacs.
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*
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* The VIA (versatile interface adapter) interfaces to the PMU,
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* a 6805 microprocessor core whose primary function is to control
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* battery charging and system power on the PowerBook 3400 and 2400.
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* The PMU also controls the ADB (Apple Desktop Bus) which connects
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* to the keyboard and mouse, as well as the non-volatile RAM
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* and the RTC (real time clock) chip.
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*
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* Copyright (C) 1998 Paul Mackerras and Fabio Riccardi.
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* Copyright (C) 2001-2002 Benjamin Herrenschmidt
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* Copyright (C) 2006-2007 Johannes Berg
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*
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* THIS DRIVER IS BECOMING A TOTAL MESS !
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* - Cleanup atomically disabling reply to PMU events after
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* a sleep or a freq. switch
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*
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*/
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#include <linux/stdarg.h>
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#include <linux/mutex.h>
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/delay.h>
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#include <linux/sched/signal.h>
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#include <linux/miscdevice.h>
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#include <linux/blkdev.h>
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#include <linux/pci.h>
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#include <linux/slab.h>
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#include <linux/poll.h>
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#include <linux/adb.h>
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#include <linux/pmu.h>
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#include <linux/cuda.h>
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#include <linux/module.h>
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#include <linux/spinlock.h>
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#include <linux/pm.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/device.h>
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#include <linux/syscore_ops.h>
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#include <linux/freezer.h>
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#include <linux/syscalls.h>
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#include <linux/suspend.h>
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#include <linux/cpu.h>
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#include <linux/compat.h>
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#include <linux/of_address.h>
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#include <linux/of_irq.h>
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#include <linux/uaccess.h>
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#include <linux/pgtable.h>
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#include <asm/machdep.h>
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#include <asm/io.h>
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#include <asm/sections.h>
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#include <asm/irq.h>
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#ifdef CONFIG_PPC_PMAC
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#include <asm/pmac_feature.h>
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#include <asm/pmac_pfunc.h>
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#include <asm/pmac_low_i2c.h>
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#include <asm/mmu_context.h>
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#include <asm/cputable.h>
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#include <asm/time.h>
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#include <asm/backlight.h>
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#else
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#include <asm/macintosh.h>
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#include <asm/macints.h>
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#include <asm/mac_via.h>
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#endif
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#include "via-pmu-event.h"
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/* Some compile options */
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#undef DEBUG_SLEEP
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/* How many iterations between battery polls */
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#define BATTERY_POLLING_COUNT 2
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static DEFINE_MUTEX(pmu_info_proc_mutex);
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/* VIA registers - spaced 0x200 bytes apart */
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#define RS 0x200 /* skip between registers */
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#define B 0 /* B-side data */
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#define A RS /* A-side data */
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#define DIRB (2*RS) /* B-side direction (1=output) */
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#define DIRA (3*RS) /* A-side direction (1=output) */
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#define T1CL (4*RS) /* Timer 1 ctr/latch (low 8 bits) */
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#define T1CH (5*RS) /* Timer 1 counter (high 8 bits) */
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#define T1LL (6*RS) /* Timer 1 latch (low 8 bits) */
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#define T1LH (7*RS) /* Timer 1 latch (high 8 bits) */
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#define T2CL (8*RS) /* Timer 2 ctr/latch (low 8 bits) */
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#define T2CH (9*RS) /* Timer 2 counter (high 8 bits) */
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#define SR (10*RS) /* Shift register */
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#define ACR (11*RS) /* Auxiliary control register */
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#define PCR (12*RS) /* Peripheral control register */
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#define IFR (13*RS) /* Interrupt flag register */
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#define IER (14*RS) /* Interrupt enable register */
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#define ANH (15*RS) /* A-side data, no handshake */
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/* Bits in B data register: both active low */
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#ifdef CONFIG_PPC_PMAC
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#define TACK 0x08 /* Transfer acknowledge (input) */
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#define TREQ 0x10 /* Transfer request (output) */
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#else
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#define TACK 0x02
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#define TREQ 0x04
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#endif
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/* Bits in ACR */
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#define SR_CTRL 0x1c /* Shift register control bits */
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#define SR_EXT 0x0c /* Shift on external clock */
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#define SR_OUT 0x10 /* Shift out if 1 */
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/* Bits in IFR and IER */
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#define IER_SET 0x80 /* set bits in IER */
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#define IER_CLR 0 /* clear bits in IER */
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#define SR_INT 0x04 /* Shift register full/empty */
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#define CB2_INT 0x08
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#define CB1_INT 0x10 /* transition on CB1 input */
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static volatile enum pmu_state {
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uninitialized = 0,
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idle,
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sending,
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intack,
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reading,
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reading_intr,
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locked,
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} pmu_state;
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static volatile enum int_data_state {
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int_data_empty,
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int_data_fill,
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int_data_ready,
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int_data_flush
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} int_data_state[2] = { int_data_empty, int_data_empty };
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static struct adb_request *current_req;
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static struct adb_request *last_req;
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static struct adb_request *req_awaiting_reply;
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static unsigned char interrupt_data[2][32];
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static int interrupt_data_len[2];
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static int int_data_last;
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static unsigned char *reply_ptr;
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static int data_index;
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static int data_len;
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static volatile int adb_int_pending;
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static volatile int disable_poll;
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static int pmu_kind = PMU_UNKNOWN;
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static int pmu_fully_inited;
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static int pmu_has_adb;
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#ifdef CONFIG_PPC_PMAC
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static volatile unsigned char __iomem *via1;
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static volatile unsigned char __iomem *via2;
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static struct device_node *vias;
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static struct device_node *gpio_node;
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#endif
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static unsigned char __iomem *gpio_reg;
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static int gpio_irq = 0;
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static int gpio_irq_enabled = -1;
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static volatile int pmu_suspended;
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static DEFINE_SPINLOCK(pmu_lock);
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static u8 pmu_intr_mask;
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static int pmu_version;
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static int drop_interrupts;
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#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
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static int option_lid_wakeup = 1;
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#endif /* CONFIG_SUSPEND && CONFIG_PPC32 */
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static unsigned long async_req_locks;
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#define NUM_IRQ_STATS 13
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static unsigned int pmu_irq_stats[NUM_IRQ_STATS];
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static struct proc_dir_entry *proc_pmu_root;
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static struct proc_dir_entry *proc_pmu_info;
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static struct proc_dir_entry *proc_pmu_irqstats;
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static struct proc_dir_entry *proc_pmu_options;
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static int option_server_mode;
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int pmu_battery_count;
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static int pmu_cur_battery;
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unsigned int pmu_power_flags = PMU_PWR_AC_PRESENT;
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struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES];
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static int query_batt_timer = BATTERY_POLLING_COUNT;
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static struct adb_request batt_req;
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static struct proc_dir_entry *proc_pmu_batt[PMU_MAX_BATTERIES];
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int asleep;
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#ifdef CONFIG_ADB
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static int adb_dev_map;
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static int pmu_adb_flags;
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static int pmu_probe(void);
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static int pmu_init(void);
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static int pmu_send_request(struct adb_request *req, int sync);
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static int pmu_adb_autopoll(int devs);
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static int pmu_adb_reset_bus(void);
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#endif /* CONFIG_ADB */
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static int init_pmu(void);
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static void pmu_start(void);
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static irqreturn_t via_pmu_interrupt(int irq, void *arg);
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static irqreturn_t gpio1_interrupt(int irq, void *arg);
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#ifdef CONFIG_PROC_FS
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static int pmu_info_proc_show(struct seq_file *m, void *v);
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static int pmu_irqstats_proc_show(struct seq_file *m, void *v);
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static int pmu_battery_proc_show(struct seq_file *m, void *v);
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#endif
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static void pmu_pass_intr(unsigned char *data, int len);
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static const struct proc_ops pmu_options_proc_ops;
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#ifdef CONFIG_ADB
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const struct adb_driver via_pmu_driver = {
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.name = "PMU",
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.probe = pmu_probe,
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.init = pmu_init,
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.send_request = pmu_send_request,
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.autopoll = pmu_adb_autopoll,
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.poll = pmu_poll_adb,
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.reset_bus = pmu_adb_reset_bus,
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};
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#endif /* CONFIG_ADB */
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extern void low_sleep_handler(void);
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extern void enable_kernel_altivec(void);
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extern void enable_kernel_fp(void);
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#ifdef DEBUG_SLEEP
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int pmu_polled_request(struct adb_request *req);
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void pmu_blink(int n);
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#endif
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/*
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* This table indicates for each PMU opcode:
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* - the number of data bytes to be sent with the command, or -1
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* if a length byte should be sent,
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* - the number of response bytes which the PMU will return, or
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* -1 if it will send a length byte.
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*/
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static const s8 pmu_data_len[256][2] = {
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/* 0 1 2 3 4 5 6 7 */
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/*00*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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/*08*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
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/*10*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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/*18*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0, 0},
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/*20*/ {-1, 0},{ 0, 0},{ 2, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},
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/*28*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0,-1},
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/*30*/ { 4, 0},{20, 0},{-1, 0},{ 3, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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/*38*/ { 0, 4},{ 0,20},{ 2,-1},{ 2, 1},{ 3,-1},{-1,-1},{-1,-1},{ 4, 0},
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/*40*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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/*48*/ { 0, 1},{ 0, 1},{-1,-1},{ 1, 0},{ 1, 0},{-1,-1},{-1,-1},{-1,-1},
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/*50*/ { 1, 0},{ 0, 0},{ 2, 0},{ 2, 0},{-1, 0},{ 1, 0},{ 3, 0},{ 1, 0},
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/*58*/ { 0, 1},{ 1, 0},{ 0, 2},{ 0, 2},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},
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/*60*/ { 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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/*68*/ { 0, 3},{ 0, 3},{ 0, 2},{ 0, 8},{ 0,-1},{ 0,-1},{-1,-1},{-1,-1},
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/*70*/ { 1, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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/*78*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{ 5, 1},{ 4, 1},{ 4, 1},
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/*80*/ { 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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/*88*/ { 0, 5},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
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/*90*/ { 1, 0},{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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/*98*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
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/*a0*/ { 2, 0},{ 2, 0},{ 2, 0},{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},
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/*a8*/ { 1, 1},{ 1, 0},{ 3, 0},{ 2, 0},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
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/*b0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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/*b8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
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/*c0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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/*c8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
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/*d0*/ { 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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/*d8*/ { 1, 1},{ 1, 1},{-1,-1},{-1,-1},{ 0, 1},{ 0,-1},{-1,-1},{-1,-1},
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/*e0*/ {-1, 0},{ 4, 0},{ 0, 1},{-1, 0},{-1, 0},{ 4, 0},{-1, 0},{-1, 0},
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/*e8*/ { 3,-1},{-1,-1},{ 0, 1},{-1,-1},{ 0,-1},{-1,-1},{-1,-1},{ 0, 0},
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/*f0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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/*f8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
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};
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static char *pbook_type[] = {
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"Unknown PowerBook",
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"PowerBook 2400/3400/3500(G3)",
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"PowerBook G3 Series",
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"1999 PowerBook G3",
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"Core99"
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};
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int __init find_via_pmu(void)
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{
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#ifdef CONFIG_PPC_PMAC
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u64 taddr;
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const u32 *reg;
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if (pmu_state != uninitialized)
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return 1;
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vias = of_find_node_by_name(NULL, "via-pmu");
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if (vias == NULL)
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return 0;
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reg = of_get_property(vias, "reg", NULL);
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if (reg == NULL) {
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printk(KERN_ERR "via-pmu: No \"reg\" property !\n");
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goto fail;
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}
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taddr = of_translate_address(vias, reg);
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if (taddr == OF_BAD_ADDR) {
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printk(KERN_ERR "via-pmu: Can't translate address !\n");
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goto fail;
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}
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pmu_has_adb = 1;
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pmu_intr_mask = PMU_INT_PCEJECT |
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PMU_INT_SNDBRT |
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PMU_INT_ADB |
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PMU_INT_TICK;
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if (of_node_name_eq(vias->parent, "ohare") ||
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of_device_is_compatible(vias->parent, "ohare"))
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pmu_kind = PMU_OHARE_BASED;
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else if (of_device_is_compatible(vias->parent, "paddington"))
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pmu_kind = PMU_PADDINGTON_BASED;
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else if (of_device_is_compatible(vias->parent, "heathrow"))
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pmu_kind = PMU_HEATHROW_BASED;
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else if (of_device_is_compatible(vias->parent, "Keylargo")
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|| of_device_is_compatible(vias->parent, "K2-Keylargo")) {
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struct device_node *gpiop;
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struct device_node *adbp;
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u64 gaddr = OF_BAD_ADDR;
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pmu_kind = PMU_KEYLARGO_BASED;
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adbp = of_find_node_by_type(NULL, "adb");
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pmu_has_adb = (adbp != NULL);
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of_node_put(adbp);
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pmu_intr_mask = PMU_INT_PCEJECT |
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PMU_INT_SNDBRT |
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PMU_INT_ADB |
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PMU_INT_TICK |
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PMU_INT_ENVIRONMENT;
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gpiop = of_find_node_by_name(NULL, "gpio");
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if (gpiop) {
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reg = of_get_property(gpiop, "reg", NULL);
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if (reg)
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gaddr = of_translate_address(gpiop, reg);
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if (gaddr != OF_BAD_ADDR)
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gpio_reg = ioremap(gaddr, 0x10);
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of_node_put(gpiop);
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}
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if (gpio_reg == NULL) {
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printk(KERN_ERR "via-pmu: Can't find GPIO reg !\n");
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goto fail;
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}
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} else
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pmu_kind = PMU_UNKNOWN;
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via1 = via2 = ioremap(taddr, 0x2000);
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if (via1 == NULL) {
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printk(KERN_ERR "via-pmu: Can't map address !\n");
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goto fail_via_remap;
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}
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out_8(&via1[IER], IER_CLR | 0x7f); /* disable all intrs */
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out_8(&via1[IFR], 0x7f); /* clear IFR */
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pmu_state = idle;
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if (!init_pmu())
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goto fail_init;
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sys_ctrler = SYS_CTRLER_PMU;
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return 1;
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fail_init:
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iounmap(via1);
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via1 = via2 = NULL;
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fail_via_remap:
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iounmap(gpio_reg);
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gpio_reg = NULL;
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fail:
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of_node_put(vias);
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vias = NULL;
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pmu_state = uninitialized;
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return 0;
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#else
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if (macintosh_config->adb_type != MAC_ADB_PB2)
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return 0;
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pmu_kind = PMU_UNKNOWN;
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pmu_has_adb = 1;
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pmu_intr_mask = PMU_INT_PCEJECT |
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PMU_INT_SNDBRT |
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PMU_INT_ADB |
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PMU_INT_TICK;
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pmu_state = idle;
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if (!init_pmu()) {
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pmu_state = uninitialized;
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return 0;
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}
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return 1;
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#endif /* !CONFIG_PPC_PMAC */
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}
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#ifdef CONFIG_ADB
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static int pmu_probe(void)
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{
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return pmu_state == uninitialized ? -ENODEV : 0;
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}
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static int pmu_init(void)
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{
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return pmu_state == uninitialized ? -ENODEV : 0;
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}
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#endif /* CONFIG_ADB */
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/*
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* We can't wait until pmu_init gets called, that happens too late.
|
|
* It happens after IDE and SCSI initialization, which can take a few
|
|
* seconds, and by that time the PMU could have given up on us and
|
|
* turned us off.
|
|
* Thus this is called with arch_initcall rather than device_initcall.
|
|
*/
|
|
static int __init via_pmu_start(void)
|
|
{
|
|
unsigned int __maybe_unused irq;
|
|
|
|
if (pmu_state == uninitialized)
|
|
return -ENODEV;
|
|
|
|
batt_req.complete = 1;
|
|
|
|
#ifdef CONFIG_PPC_PMAC
|
|
irq = irq_of_parse_and_map(vias, 0);
|
|
if (!irq) {
|
|
printk(KERN_ERR "via-pmu: can't map interrupt\n");
|
|
return -ENODEV;
|
|
}
|
|
/* We set IRQF_NO_SUSPEND because we don't want the interrupt
|
|
* to be disabled between the 2 passes of driver suspend, we
|
|
* control our own disabling for that one
|
|
*/
|
|
if (request_irq(irq, via_pmu_interrupt, IRQF_NO_SUSPEND,
|
|
"VIA-PMU", (void *)0)) {
|
|
printk(KERN_ERR "via-pmu: can't request irq %d\n", irq);
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (pmu_kind == PMU_KEYLARGO_BASED) {
|
|
gpio_node = of_find_node_by_name(NULL, "extint-gpio1");
|
|
if (gpio_node == NULL)
|
|
gpio_node = of_find_node_by_name(NULL,
|
|
"pmu-interrupt");
|
|
if (gpio_node)
|
|
gpio_irq = irq_of_parse_and_map(gpio_node, 0);
|
|
|
|
if (gpio_irq) {
|
|
if (request_irq(gpio_irq, gpio1_interrupt,
|
|
IRQF_NO_SUSPEND, "GPIO1 ADB",
|
|
(void *)0))
|
|
printk(KERN_ERR "pmu: can't get irq %d"
|
|
" (GPIO1)\n", gpio_irq);
|
|
else
|
|
gpio_irq_enabled = 1;
|
|
}
|
|
}
|
|
|
|
/* Enable interrupts */
|
|
out_8(&via1[IER], IER_SET | SR_INT | CB1_INT);
|
|
#else
|
|
if (request_irq(IRQ_MAC_ADB_SR, via_pmu_interrupt, IRQF_NO_SUSPEND,
|
|
"VIA-PMU-SR", NULL)) {
|
|
pr_err("%s: couldn't get SR irq\n", __func__);
|
|
return -ENODEV;
|
|
}
|
|
if (request_irq(IRQ_MAC_ADB_CL, via_pmu_interrupt, IRQF_NO_SUSPEND,
|
|
"VIA-PMU-CL", NULL)) {
|
|
pr_err("%s: couldn't get CL irq\n", __func__);
|
|
free_irq(IRQ_MAC_ADB_SR, NULL);
|
|
return -ENODEV;
|
|
}
|
|
#endif /* !CONFIG_PPC_PMAC */
|
|
|
|
pmu_fully_inited = 1;
|
|
|
|
/* Make sure PMU settle down before continuing. This is _very_ important
|
|
* since the IDE probe may shut interrupts down for quite a bit of time. If
|
|
* a PMU communication is pending while this happens, the PMU may timeout
|
|
* Not that on Core99 machines, the PMU keeps sending us environement
|
|
* messages, we should find a way to either fix IDE or make it call
|
|
* pmu_suspend() before masking interrupts. This can also happens while
|
|
* scolling with some fbdevs.
|
|
*/
|
|
do {
|
|
pmu_poll();
|
|
} while (pmu_state != idle);
|
|
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(via_pmu_start);
|
|
|
|
/*
|
|
* This has to be done after pci_init, which is a subsys_initcall.
|
|
*/
|
|
static int __init via_pmu_dev_init(void)
|
|
{
|
|
if (pmu_state == uninitialized)
|
|
return -ENODEV;
|
|
|
|
#ifdef CONFIG_PMAC_BACKLIGHT
|
|
/* Initialize backlight */
|
|
pmu_backlight_init();
|
|
#endif
|
|
|
|
#ifdef CONFIG_PPC32
|
|
if (of_machine_is_compatible("AAPL,3400/2400") ||
|
|
of_machine_is_compatible("AAPL,3500")) {
|
|
int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO,
|
|
NULL, PMAC_MB_INFO_MODEL, 0);
|
|
pmu_battery_count = 1;
|
|
if (mb == PMAC_TYPE_COMET)
|
|
pmu_batteries[0].flags |= PMU_BATT_TYPE_COMET;
|
|
else
|
|
pmu_batteries[0].flags |= PMU_BATT_TYPE_HOOPER;
|
|
} else if (of_machine_is_compatible("AAPL,PowerBook1998") ||
|
|
of_machine_is_compatible("PowerBook1,1")) {
|
|
pmu_battery_count = 2;
|
|
pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART;
|
|
pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART;
|
|
} else {
|
|
struct device_node* prim =
|
|
of_find_node_by_name(NULL, "power-mgt");
|
|
const u32 *prim_info = NULL;
|
|
if (prim)
|
|
prim_info = of_get_property(prim, "prim-info", NULL);
|
|
if (prim_info) {
|
|
/* Other stuffs here yet unknown */
|
|
pmu_battery_count = (prim_info[6] >> 16) & 0xff;
|
|
pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART;
|
|
if (pmu_battery_count > 1)
|
|
pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART;
|
|
}
|
|
of_node_put(prim);
|
|
}
|
|
#endif /* CONFIG_PPC32 */
|
|
|
|
/* Create /proc/pmu */
|
|
proc_pmu_root = proc_mkdir("pmu", NULL);
|
|
if (proc_pmu_root) {
|
|
long i;
|
|
|
|
for (i=0; i<pmu_battery_count; i++) {
|
|
char title[16];
|
|
sprintf(title, "battery_%ld", i);
|
|
proc_pmu_batt[i] = proc_create_single_data(title, 0,
|
|
proc_pmu_root, pmu_battery_proc_show,
|
|
(void *)i);
|
|
}
|
|
|
|
proc_pmu_info = proc_create_single("info", 0, proc_pmu_root,
|
|
pmu_info_proc_show);
|
|
proc_pmu_irqstats = proc_create_single("interrupts", 0,
|
|
proc_pmu_root, pmu_irqstats_proc_show);
|
|
proc_pmu_options = proc_create("options", 0600, proc_pmu_root,
|
|
&pmu_options_proc_ops);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
device_initcall(via_pmu_dev_init);
|
|
|
|
static int
|
|
init_pmu(void)
|
|
{
|
|
int timeout;
|
|
struct adb_request req;
|
|
|
|
/* Negate TREQ. Set TACK to input and TREQ to output. */
|
|
out_8(&via2[B], in_8(&via2[B]) | TREQ);
|
|
out_8(&via2[DIRB], (in_8(&via2[DIRB]) | TREQ) & ~TACK);
|
|
|
|
pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
|
|
timeout = 100000;
|
|
while (!req.complete) {
|
|
if (--timeout < 0) {
|
|
printk(KERN_ERR "init_pmu: no response from PMU\n");
|
|
return 0;
|
|
}
|
|
udelay(10);
|
|
pmu_poll();
|
|
}
|
|
|
|
/* ack all pending interrupts */
|
|
timeout = 100000;
|
|
interrupt_data[0][0] = 1;
|
|
while (interrupt_data[0][0] || pmu_state != idle) {
|
|
if (--timeout < 0) {
|
|
printk(KERN_ERR "init_pmu: timed out acking intrs\n");
|
|
return 0;
|
|
}
|
|
if (pmu_state == idle)
|
|
adb_int_pending = 1;
|
|
via_pmu_interrupt(0, NULL);
|
|
udelay(10);
|
|
}
|
|
|
|
/* Tell PMU we are ready. */
|
|
if (pmu_kind == PMU_KEYLARGO_BASED) {
|
|
pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2);
|
|
while (!req.complete)
|
|
pmu_poll();
|
|
}
|
|
|
|
/* Read PMU version */
|
|
pmu_request(&req, NULL, 1, PMU_GET_VERSION);
|
|
pmu_wait_complete(&req);
|
|
if (req.reply_len > 0)
|
|
pmu_version = req.reply[0];
|
|
|
|
/* Read server mode setting */
|
|
if (pmu_kind == PMU_KEYLARGO_BASED) {
|
|
pmu_request(&req, NULL, 2, PMU_POWER_EVENTS,
|
|
PMU_PWR_GET_POWERUP_EVENTS);
|
|
pmu_wait_complete(&req);
|
|
if (req.reply_len == 2) {
|
|
if (req.reply[1] & PMU_PWR_WAKEUP_AC_INSERT)
|
|
option_server_mode = 1;
|
|
printk(KERN_INFO "via-pmu: Server Mode is %s\n",
|
|
option_server_mode ? "enabled" : "disabled");
|
|
}
|
|
}
|
|
|
|
printk(KERN_INFO "PMU driver v%d initialized for %s, firmware: %02x\n",
|
|
PMU_DRIVER_VERSION, pbook_type[pmu_kind], pmu_version);
|
|
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
pmu_get_model(void)
|
|
{
|
|
return pmu_kind;
|
|
}
|
|
|
|
static void pmu_set_server_mode(int server_mode)
|
|
{
|
|
struct adb_request req;
|
|
|
|
if (pmu_kind != PMU_KEYLARGO_BASED)
|
|
return;
|
|
|
|
option_server_mode = server_mode;
|
|
pmu_request(&req, NULL, 2, PMU_POWER_EVENTS, PMU_PWR_GET_POWERUP_EVENTS);
|
|
pmu_wait_complete(&req);
|
|
if (req.reply_len < 2)
|
|
return;
|
|
if (server_mode)
|
|
pmu_request(&req, NULL, 4, PMU_POWER_EVENTS,
|
|
PMU_PWR_SET_POWERUP_EVENTS,
|
|
req.reply[0], PMU_PWR_WAKEUP_AC_INSERT);
|
|
else
|
|
pmu_request(&req, NULL, 4, PMU_POWER_EVENTS,
|
|
PMU_PWR_CLR_POWERUP_EVENTS,
|
|
req.reply[0], PMU_PWR_WAKEUP_AC_INSERT);
|
|
pmu_wait_complete(&req);
|
|
}
|
|
|
|
/* This new version of the code for 2400/3400/3500 powerbooks
|
|
* is inspired from the implementation in gkrellm-pmu
|
|
*/
|
|
static void
|
|
done_battery_state_ohare(struct adb_request* req)
|
|
{
|
|
#ifdef CONFIG_PPC_PMAC
|
|
/* format:
|
|
* [0] : flags
|
|
* 0x01 : AC indicator
|
|
* 0x02 : charging
|
|
* 0x04 : battery exist
|
|
* 0x08 :
|
|
* 0x10 :
|
|
* 0x20 : full charged
|
|
* 0x40 : pcharge reset
|
|
* 0x80 : battery exist
|
|
*
|
|
* [1][2] : battery voltage
|
|
* [3] : CPU temperature
|
|
* [4] : battery temperature
|
|
* [5] : current
|
|
* [6][7] : pcharge
|
|
* --tkoba
|
|
*/
|
|
unsigned int bat_flags = PMU_BATT_TYPE_HOOPER;
|
|
long pcharge, charge, vb, vmax, lmax;
|
|
long vmax_charging, vmax_charged;
|
|
long amperage, voltage, time, max;
|
|
int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO,
|
|
NULL, PMAC_MB_INFO_MODEL, 0);
|
|
|
|
if (req->reply[0] & 0x01)
|
|
pmu_power_flags |= PMU_PWR_AC_PRESENT;
|
|
else
|
|
pmu_power_flags &= ~PMU_PWR_AC_PRESENT;
|
|
|
|
if (mb == PMAC_TYPE_COMET) {
|
|
vmax_charged = 189;
|
|
vmax_charging = 213;
|
|
lmax = 6500;
|
|
} else {
|
|
vmax_charged = 330;
|
|
vmax_charging = 330;
|
|
lmax = 6500;
|
|
}
|
|
vmax = vmax_charged;
|
|
|
|
/* If battery installed */
|
|
if (req->reply[0] & 0x04) {
|
|
bat_flags |= PMU_BATT_PRESENT;
|
|
if (req->reply[0] & 0x02)
|
|
bat_flags |= PMU_BATT_CHARGING;
|
|
vb = (req->reply[1] << 8) | req->reply[2];
|
|
voltage = (vb * 265 + 72665) / 10;
|
|
amperage = req->reply[5];
|
|
if ((req->reply[0] & 0x01) == 0) {
|
|
if (amperage > 200)
|
|
vb += ((amperage - 200) * 15)/100;
|
|
} else if (req->reply[0] & 0x02) {
|
|
vb = (vb * 97) / 100;
|
|
vmax = vmax_charging;
|
|
}
|
|
charge = (100 * vb) / vmax;
|
|
if (req->reply[0] & 0x40) {
|
|
pcharge = (req->reply[6] << 8) + req->reply[7];
|
|
if (pcharge > lmax)
|
|
pcharge = lmax;
|
|
pcharge *= 100;
|
|
pcharge = 100 - pcharge / lmax;
|
|
if (pcharge < charge)
|
|
charge = pcharge;
|
|
}
|
|
if (amperage > 0)
|
|
time = (charge * 16440) / amperage;
|
|
else
|
|
time = 0;
|
|
max = 100;
|
|
amperage = -amperage;
|
|
} else
|
|
charge = max = amperage = voltage = time = 0;
|
|
|
|
pmu_batteries[pmu_cur_battery].flags = bat_flags;
|
|
pmu_batteries[pmu_cur_battery].charge = charge;
|
|
pmu_batteries[pmu_cur_battery].max_charge = max;
|
|
pmu_batteries[pmu_cur_battery].amperage = amperage;
|
|
pmu_batteries[pmu_cur_battery].voltage = voltage;
|
|
pmu_batteries[pmu_cur_battery].time_remaining = time;
|
|
#endif /* CONFIG_PPC_PMAC */
|
|
|
|
clear_bit(0, &async_req_locks);
|
|
}
|
|
|
|
static void
|
|
done_battery_state_smart(struct adb_request* req)
|
|
{
|
|
/* format:
|
|
* [0] : format of this structure (known: 3,4,5)
|
|
* [1] : flags
|
|
*
|
|
* format 3 & 4:
|
|
*
|
|
* [2] : charge
|
|
* [3] : max charge
|
|
* [4] : current
|
|
* [5] : voltage
|
|
*
|
|
* format 5:
|
|
*
|
|
* [2][3] : charge
|
|
* [4][5] : max charge
|
|
* [6][7] : current
|
|
* [8][9] : voltage
|
|
*/
|
|
|
|
unsigned int bat_flags = PMU_BATT_TYPE_SMART;
|
|
int amperage;
|
|
unsigned int capa, max, voltage;
|
|
|
|
if (req->reply[1] & 0x01)
|
|
pmu_power_flags |= PMU_PWR_AC_PRESENT;
|
|
else
|
|
pmu_power_flags &= ~PMU_PWR_AC_PRESENT;
|
|
|
|
|
|
capa = max = amperage = voltage = 0;
|
|
|
|
if (req->reply[1] & 0x04) {
|
|
bat_flags |= PMU_BATT_PRESENT;
|
|
switch(req->reply[0]) {
|
|
case 3:
|
|
case 4: capa = req->reply[2];
|
|
max = req->reply[3];
|
|
amperage = *((signed char *)&req->reply[4]);
|
|
voltage = req->reply[5];
|
|
break;
|
|
case 5: capa = (req->reply[2] << 8) | req->reply[3];
|
|
max = (req->reply[4] << 8) | req->reply[5];
|
|
amperage = *((signed short *)&req->reply[6]);
|
|
voltage = (req->reply[8] << 8) | req->reply[9];
|
|
break;
|
|
default:
|
|
pr_warn("pmu.c: unrecognized battery info, "
|
|
"len: %d, %4ph\n", req->reply_len,
|
|
req->reply);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ((req->reply[1] & 0x01) && (amperage > 0))
|
|
bat_flags |= PMU_BATT_CHARGING;
|
|
|
|
pmu_batteries[pmu_cur_battery].flags = bat_flags;
|
|
pmu_batteries[pmu_cur_battery].charge = capa;
|
|
pmu_batteries[pmu_cur_battery].max_charge = max;
|
|
pmu_batteries[pmu_cur_battery].amperage = amperage;
|
|
pmu_batteries[pmu_cur_battery].voltage = voltage;
|
|
if (amperage) {
|
|
if ((req->reply[1] & 0x01) && (amperage > 0))
|
|
pmu_batteries[pmu_cur_battery].time_remaining
|
|
= ((max-capa) * 3600) / amperage;
|
|
else
|
|
pmu_batteries[pmu_cur_battery].time_remaining
|
|
= (capa * 3600) / (-amperage);
|
|
} else
|
|
pmu_batteries[pmu_cur_battery].time_remaining = 0;
|
|
|
|
pmu_cur_battery = (pmu_cur_battery + 1) % pmu_battery_count;
|
|
|
|
clear_bit(0, &async_req_locks);
|
|
}
|
|
|
|
static void
|
|
query_battery_state(void)
|
|
{
|
|
if (test_and_set_bit(0, &async_req_locks))
|
|
return;
|
|
if (pmu_kind == PMU_OHARE_BASED)
|
|
pmu_request(&batt_req, done_battery_state_ohare,
|
|
1, PMU_BATTERY_STATE);
|
|
else
|
|
pmu_request(&batt_req, done_battery_state_smart,
|
|
2, PMU_SMART_BATTERY_STATE, pmu_cur_battery+1);
|
|
}
|
|
|
|
#ifdef CONFIG_PROC_FS
|
|
static int pmu_info_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
seq_printf(m, "PMU driver version : %d\n", PMU_DRIVER_VERSION);
|
|
seq_printf(m, "PMU firmware version : %02x\n", pmu_version);
|
|
seq_printf(m, "AC Power : %d\n",
|
|
((pmu_power_flags & PMU_PWR_AC_PRESENT) != 0) || pmu_battery_count == 0);
|
|
seq_printf(m, "Battery count : %d\n", pmu_battery_count);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pmu_irqstats_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
int i;
|
|
static const char *irq_names[NUM_IRQ_STATS] = {
|
|
"Unknown interrupt (type 0)",
|
|
"Unknown interrupt (type 1)",
|
|
"PC-Card eject button",
|
|
"Sound/Brightness button",
|
|
"ADB message",
|
|
"Battery state change",
|
|
"Environment interrupt",
|
|
"Tick timer",
|
|
"Ghost interrupt (zero len)",
|
|
"Empty interrupt (empty mask)",
|
|
"Max irqs in a row",
|
|
"Total CB1 triggered events",
|
|
"Total GPIO1 triggered events",
|
|
};
|
|
|
|
for (i = 0; i < NUM_IRQ_STATS; i++) {
|
|
seq_printf(m, " %2u: %10u (%s)\n",
|
|
i, pmu_irq_stats[i], irq_names[i]);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int pmu_battery_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
long batnum = (long)m->private;
|
|
|
|
seq_putc(m, '\n');
|
|
seq_printf(m, "flags : %08x\n", pmu_batteries[batnum].flags);
|
|
seq_printf(m, "charge : %d\n", pmu_batteries[batnum].charge);
|
|
seq_printf(m, "max_charge : %d\n", pmu_batteries[batnum].max_charge);
|
|
seq_printf(m, "current : %d\n", pmu_batteries[batnum].amperage);
|
|
seq_printf(m, "voltage : %d\n", pmu_batteries[batnum].voltage);
|
|
seq_printf(m, "time rem. : %d\n", pmu_batteries[batnum].time_remaining);
|
|
return 0;
|
|
}
|
|
|
|
static int pmu_options_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
|
|
if (pmu_kind == PMU_KEYLARGO_BASED &&
|
|
pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0)
|
|
seq_printf(m, "lid_wakeup=%d\n", option_lid_wakeup);
|
|
#endif
|
|
if (pmu_kind == PMU_KEYLARGO_BASED)
|
|
seq_printf(m, "server_mode=%d\n", option_server_mode);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pmu_options_proc_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, pmu_options_proc_show, NULL);
|
|
}
|
|
|
|
static ssize_t pmu_options_proc_write(struct file *file,
|
|
const char __user *buffer, size_t count, loff_t *pos)
|
|
{
|
|
char tmp[33];
|
|
char *label, *val;
|
|
size_t fcount = count;
|
|
|
|
if (!count)
|
|
return -EINVAL;
|
|
if (count > 32)
|
|
count = 32;
|
|
if (copy_from_user(tmp, buffer, count))
|
|
return -EFAULT;
|
|
tmp[count] = 0;
|
|
|
|
label = tmp;
|
|
while(*label == ' ')
|
|
label++;
|
|
val = label;
|
|
while(*val && (*val != '=')) {
|
|
if (*val == ' ')
|
|
*val = 0;
|
|
val++;
|
|
}
|
|
if ((*val) == 0)
|
|
return -EINVAL;
|
|
*(val++) = 0;
|
|
while(*val == ' ')
|
|
val++;
|
|
#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
|
|
if (pmu_kind == PMU_KEYLARGO_BASED &&
|
|
pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0)
|
|
if (!strcmp(label, "lid_wakeup"))
|
|
option_lid_wakeup = ((*val) == '1');
|
|
#endif
|
|
if (pmu_kind == PMU_KEYLARGO_BASED && !strcmp(label, "server_mode")) {
|
|
int new_value;
|
|
new_value = ((*val) == '1');
|
|
if (new_value != option_server_mode)
|
|
pmu_set_server_mode(new_value);
|
|
}
|
|
return fcount;
|
|
}
|
|
|
|
static const struct proc_ops pmu_options_proc_ops = {
|
|
.proc_open = pmu_options_proc_open,
|
|
.proc_read = seq_read,
|
|
.proc_lseek = seq_lseek,
|
|
.proc_release = single_release,
|
|
.proc_write = pmu_options_proc_write,
|
|
};
|
|
#endif
|
|
|
|
#ifdef CONFIG_ADB
|
|
/* Send an ADB command */
|
|
static int pmu_send_request(struct adb_request *req, int sync)
|
|
{
|
|
int i, ret;
|
|
|
|
if (pmu_state == uninitialized || !pmu_fully_inited) {
|
|
req->complete = 1;
|
|
return -ENXIO;
|
|
}
|
|
|
|
ret = -EINVAL;
|
|
|
|
switch (req->data[0]) {
|
|
case PMU_PACKET:
|
|
for (i = 0; i < req->nbytes - 1; ++i)
|
|
req->data[i] = req->data[i+1];
|
|
--req->nbytes;
|
|
if (pmu_data_len[req->data[0]][1] != 0) {
|
|
req->reply[0] = ADB_RET_OK;
|
|
req->reply_len = 1;
|
|
} else
|
|
req->reply_len = 0;
|
|
ret = pmu_queue_request(req);
|
|
break;
|
|
case CUDA_PACKET:
|
|
switch (req->data[1]) {
|
|
case CUDA_GET_TIME:
|
|
if (req->nbytes != 2)
|
|
break;
|
|
req->data[0] = PMU_READ_RTC;
|
|
req->nbytes = 1;
|
|
req->reply_len = 3;
|
|
req->reply[0] = CUDA_PACKET;
|
|
req->reply[1] = 0;
|
|
req->reply[2] = CUDA_GET_TIME;
|
|
ret = pmu_queue_request(req);
|
|
break;
|
|
case CUDA_SET_TIME:
|
|
if (req->nbytes != 6)
|
|
break;
|
|
req->data[0] = PMU_SET_RTC;
|
|
req->nbytes = 5;
|
|
for (i = 1; i <= 4; ++i)
|
|
req->data[i] = req->data[i+1];
|
|
req->reply_len = 3;
|
|
req->reply[0] = CUDA_PACKET;
|
|
req->reply[1] = 0;
|
|
req->reply[2] = CUDA_SET_TIME;
|
|
ret = pmu_queue_request(req);
|
|
break;
|
|
}
|
|
break;
|
|
case ADB_PACKET:
|
|
if (!pmu_has_adb)
|
|
return -ENXIO;
|
|
for (i = req->nbytes - 1; i > 1; --i)
|
|
req->data[i+2] = req->data[i];
|
|
req->data[3] = req->nbytes - 2;
|
|
req->data[2] = pmu_adb_flags;
|
|
/*req->data[1] = req->data[1];*/
|
|
req->data[0] = PMU_ADB_CMD;
|
|
req->nbytes += 2;
|
|
req->reply_expected = 1;
|
|
req->reply_len = 0;
|
|
ret = pmu_queue_request(req);
|
|
break;
|
|
}
|
|
if (ret) {
|
|
req->complete = 1;
|
|
return ret;
|
|
}
|
|
|
|
if (sync)
|
|
while (!req->complete)
|
|
pmu_poll();
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Enable/disable autopolling */
|
|
static int __pmu_adb_autopoll(int devs)
|
|
{
|
|
struct adb_request req;
|
|
|
|
if (devs) {
|
|
pmu_request(&req, NULL, 5, PMU_ADB_CMD, 0, 0x86,
|
|
adb_dev_map >> 8, adb_dev_map);
|
|
pmu_adb_flags = 2;
|
|
} else {
|
|
pmu_request(&req, NULL, 1, PMU_ADB_POLL_OFF);
|
|
pmu_adb_flags = 0;
|
|
}
|
|
while (!req.complete)
|
|
pmu_poll();
|
|
return 0;
|
|
}
|
|
|
|
static int pmu_adb_autopoll(int devs)
|
|
{
|
|
if (pmu_state == uninitialized || !pmu_fully_inited || !pmu_has_adb)
|
|
return -ENXIO;
|
|
|
|
adb_dev_map = devs;
|
|
return __pmu_adb_autopoll(devs);
|
|
}
|
|
|
|
/* Reset the ADB bus */
|
|
static int pmu_adb_reset_bus(void)
|
|
{
|
|
struct adb_request req;
|
|
int save_autopoll = adb_dev_map;
|
|
|
|
if (pmu_state == uninitialized || !pmu_fully_inited || !pmu_has_adb)
|
|
return -ENXIO;
|
|
|
|
/* anyone got a better idea?? */
|
|
__pmu_adb_autopoll(0);
|
|
|
|
req.nbytes = 4;
|
|
req.done = NULL;
|
|
req.data[0] = PMU_ADB_CMD;
|
|
req.data[1] = ADB_BUSRESET;
|
|
req.data[2] = 0;
|
|
req.data[3] = 0;
|
|
req.data[4] = 0;
|
|
req.reply_len = 0;
|
|
req.reply_expected = 1;
|
|
if (pmu_queue_request(&req) != 0) {
|
|
printk(KERN_ERR "pmu_adb_reset_bus: pmu_queue_request failed\n");
|
|
return -EIO;
|
|
}
|
|
pmu_wait_complete(&req);
|
|
|
|
if (save_autopoll != 0)
|
|
__pmu_adb_autopoll(save_autopoll);
|
|
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_ADB */
|
|
|
|
/* Construct and send a pmu request */
|
|
int
|
|
pmu_request(struct adb_request *req, void (*done)(struct adb_request *),
|
|
int nbytes, ...)
|
|
{
|
|
va_list list;
|
|
int i;
|
|
|
|
if (pmu_state == uninitialized)
|
|
return -ENXIO;
|
|
|
|
if (nbytes < 0 || nbytes > 32) {
|
|
printk(KERN_ERR "pmu_request: bad nbytes (%d)\n", nbytes);
|
|
req->complete = 1;
|
|
return -EINVAL;
|
|
}
|
|
req->nbytes = nbytes;
|
|
req->done = done;
|
|
va_start(list, nbytes);
|
|
for (i = 0; i < nbytes; ++i)
|
|
req->data[i] = va_arg(list, int);
|
|
va_end(list);
|
|
req->reply_len = 0;
|
|
req->reply_expected = 0;
|
|
return pmu_queue_request(req);
|
|
}
|
|
|
|
int
|
|
pmu_queue_request(struct adb_request *req)
|
|
{
|
|
unsigned long flags;
|
|
int nsend;
|
|
|
|
if (pmu_state == uninitialized) {
|
|
req->complete = 1;
|
|
return -ENXIO;
|
|
}
|
|
if (req->nbytes <= 0) {
|
|
req->complete = 1;
|
|
return 0;
|
|
}
|
|
nsend = pmu_data_len[req->data[0]][0];
|
|
if (nsend >= 0 && req->nbytes != nsend + 1) {
|
|
req->complete = 1;
|
|
return -EINVAL;
|
|
}
|
|
|
|
req->next = NULL;
|
|
req->sent = 0;
|
|
req->complete = 0;
|
|
|
|
spin_lock_irqsave(&pmu_lock, flags);
|
|
if (current_req) {
|
|
last_req->next = req;
|
|
last_req = req;
|
|
} else {
|
|
current_req = req;
|
|
last_req = req;
|
|
if (pmu_state == idle)
|
|
pmu_start();
|
|
}
|
|
spin_unlock_irqrestore(&pmu_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline void
|
|
wait_for_ack(void)
|
|
{
|
|
/* Sightly increased the delay, I had one occurrence of the message
|
|
* reported
|
|
*/
|
|
int timeout = 4000;
|
|
while ((in_8(&via2[B]) & TACK) == 0) {
|
|
if (--timeout < 0) {
|
|
printk(KERN_ERR "PMU not responding (!ack)\n");
|
|
return;
|
|
}
|
|
udelay(10);
|
|
}
|
|
}
|
|
|
|
/* New PMU seems to be very sensitive to those timings, so we make sure
|
|
* PCI is flushed immediately */
|
|
static inline void
|
|
send_byte(int x)
|
|
{
|
|
out_8(&via1[ACR], in_8(&via1[ACR]) | SR_OUT | SR_EXT);
|
|
out_8(&via1[SR], x);
|
|
out_8(&via2[B], in_8(&via2[B]) & ~TREQ); /* assert TREQ */
|
|
(void)in_8(&via2[B]);
|
|
}
|
|
|
|
static inline void
|
|
recv_byte(void)
|
|
{
|
|
out_8(&via1[ACR], (in_8(&via1[ACR]) & ~SR_OUT) | SR_EXT);
|
|
in_8(&via1[SR]); /* resets SR */
|
|
out_8(&via2[B], in_8(&via2[B]) & ~TREQ);
|
|
(void)in_8(&via2[B]);
|
|
}
|
|
|
|
static inline void
|
|
pmu_done(struct adb_request *req)
|
|
{
|
|
void (*done)(struct adb_request *) = req->done;
|
|
mb();
|
|
req->complete = 1;
|
|
/* Here, we assume that if the request has a done member, the
|
|
* struct request will survive to setting req->complete to 1
|
|
*/
|
|
if (done)
|
|
(*done)(req);
|
|
}
|
|
|
|
static void
|
|
pmu_start(void)
|
|
{
|
|
struct adb_request *req;
|
|
|
|
/* assert pmu_state == idle */
|
|
/* get the packet to send */
|
|
req = current_req;
|
|
if (!req || pmu_state != idle
|
|
|| (/*req->reply_expected && */req_awaiting_reply))
|
|
return;
|
|
|
|
pmu_state = sending;
|
|
data_index = 1;
|
|
data_len = pmu_data_len[req->data[0]][0];
|
|
|
|
/* Sounds safer to make sure ACK is high before writing. This helped
|
|
* kill a problem with ADB and some iBooks
|
|
*/
|
|
wait_for_ack();
|
|
/* set the shift register to shift out and send a byte */
|
|
send_byte(req->data[0]);
|
|
}
|
|
|
|
void
|
|
pmu_poll(void)
|
|
{
|
|
if (pmu_state == uninitialized)
|
|
return;
|
|
if (disable_poll)
|
|
return;
|
|
via_pmu_interrupt(0, NULL);
|
|
}
|
|
|
|
void
|
|
pmu_poll_adb(void)
|
|
{
|
|
if (pmu_state == uninitialized)
|
|
return;
|
|
if (disable_poll)
|
|
return;
|
|
/* Kicks ADB read when PMU is suspended */
|
|
adb_int_pending = 1;
|
|
do {
|
|
via_pmu_interrupt(0, NULL);
|
|
} while (pmu_suspended && (adb_int_pending || pmu_state != idle
|
|
|| req_awaiting_reply));
|
|
}
|
|
|
|
void
|
|
pmu_wait_complete(struct adb_request *req)
|
|
{
|
|
if (pmu_state == uninitialized)
|
|
return;
|
|
while((pmu_state != idle && pmu_state != locked) || !req->complete)
|
|
via_pmu_interrupt(0, NULL);
|
|
}
|
|
|
|
/* This function loops until the PMU is idle and prevents it from
|
|
* anwsering to ADB interrupts. pmu_request can still be called.
|
|
* This is done to avoid spurrious shutdowns when we know we'll have
|
|
* interrupts switched off for a long time
|
|
*/
|
|
void
|
|
pmu_suspend(void)
|
|
{
|
|
unsigned long flags;
|
|
|
|
if (pmu_state == uninitialized)
|
|
return;
|
|
|
|
spin_lock_irqsave(&pmu_lock, flags);
|
|
pmu_suspended++;
|
|
if (pmu_suspended > 1) {
|
|
spin_unlock_irqrestore(&pmu_lock, flags);
|
|
return;
|
|
}
|
|
|
|
do {
|
|
spin_unlock_irqrestore(&pmu_lock, flags);
|
|
if (req_awaiting_reply)
|
|
adb_int_pending = 1;
|
|
via_pmu_interrupt(0, NULL);
|
|
spin_lock_irqsave(&pmu_lock, flags);
|
|
if (!adb_int_pending && pmu_state == idle && !req_awaiting_reply) {
|
|
if (gpio_irq >= 0)
|
|
disable_irq_nosync(gpio_irq);
|
|
out_8(&via1[IER], CB1_INT | IER_CLR);
|
|
spin_unlock_irqrestore(&pmu_lock, flags);
|
|
break;
|
|
}
|
|
} while (1);
|
|
}
|
|
|
|
void
|
|
pmu_resume(void)
|
|
{
|
|
unsigned long flags;
|
|
|
|
if (pmu_state == uninitialized || pmu_suspended < 1)
|
|
return;
|
|
|
|
spin_lock_irqsave(&pmu_lock, flags);
|
|
pmu_suspended--;
|
|
if (pmu_suspended > 0) {
|
|
spin_unlock_irqrestore(&pmu_lock, flags);
|
|
return;
|
|
}
|
|
adb_int_pending = 1;
|
|
if (gpio_irq >= 0)
|
|
enable_irq(gpio_irq);
|
|
out_8(&via1[IER], CB1_INT | IER_SET);
|
|
spin_unlock_irqrestore(&pmu_lock, flags);
|
|
pmu_poll();
|
|
}
|
|
|
|
/* Interrupt data could be the result data from an ADB cmd */
|
|
static void
|
|
pmu_handle_data(unsigned char *data, int len)
|
|
{
|
|
unsigned char ints;
|
|
int idx;
|
|
int i = 0;
|
|
|
|
asleep = 0;
|
|
if (drop_interrupts || len < 1) {
|
|
adb_int_pending = 0;
|
|
pmu_irq_stats[8]++;
|
|
return;
|
|
}
|
|
|
|
/* Get PMU interrupt mask */
|
|
ints = data[0];
|
|
|
|
/* Record zero interrupts for stats */
|
|
if (ints == 0)
|
|
pmu_irq_stats[9]++;
|
|
|
|
/* Hack to deal with ADB autopoll flag */
|
|
if (ints & PMU_INT_ADB)
|
|
ints &= ~(PMU_INT_ADB_AUTO | PMU_INT_AUTO_SRQ_POLL);
|
|
|
|
next:
|
|
if (ints == 0) {
|
|
if (i > pmu_irq_stats[10])
|
|
pmu_irq_stats[10] = i;
|
|
return;
|
|
}
|
|
i++;
|
|
|
|
idx = ffs(ints) - 1;
|
|
ints &= ~BIT(idx);
|
|
|
|
pmu_irq_stats[idx]++;
|
|
|
|
/* Note: for some reason, we get an interrupt with len=1,
|
|
* data[0]==0 after each normal ADB interrupt, at least
|
|
* on the Pismo. Still investigating... --BenH
|
|
*/
|
|
switch (BIT(idx)) {
|
|
case PMU_INT_ADB:
|
|
if ((data[0] & PMU_INT_ADB_AUTO) == 0) {
|
|
struct adb_request *req = req_awaiting_reply;
|
|
if (!req) {
|
|
printk(KERN_ERR "PMU: extra ADB reply\n");
|
|
return;
|
|
}
|
|
req_awaiting_reply = NULL;
|
|
if (len <= 2)
|
|
req->reply_len = 0;
|
|
else {
|
|
memcpy(req->reply, data + 1, len - 1);
|
|
req->reply_len = len - 1;
|
|
}
|
|
pmu_done(req);
|
|
} else {
|
|
#ifdef CONFIG_XMON
|
|
if (len == 4 && data[1] == 0x2c) {
|
|
extern int xmon_wants_key, xmon_adb_keycode;
|
|
if (xmon_wants_key) {
|
|
xmon_adb_keycode = data[2];
|
|
return;
|
|
}
|
|
}
|
|
#endif /* CONFIG_XMON */
|
|
#ifdef CONFIG_ADB
|
|
/*
|
|
* XXX On the [23]400 the PMU gives us an up
|
|
* event for keycodes 0x74 or 0x75 when the PC
|
|
* card eject buttons are released, so we
|
|
* ignore those events.
|
|
*/
|
|
if (!(pmu_kind == PMU_OHARE_BASED && len == 4
|
|
&& data[1] == 0x2c && data[3] == 0xff
|
|
&& (data[2] & ~1) == 0xf4))
|
|
adb_input(data+1, len-1, 1);
|
|
#endif /* CONFIG_ADB */
|
|
}
|
|
break;
|
|
|
|
/* Sound/brightness button pressed */
|
|
case PMU_INT_SNDBRT:
|
|
#ifdef CONFIG_PMAC_BACKLIGHT
|
|
if (len == 3)
|
|
pmac_backlight_set_legacy_brightness_pmu(data[1] >> 4);
|
|
#endif
|
|
break;
|
|
|
|
/* Tick interrupt */
|
|
case PMU_INT_TICK:
|
|
/* Environment or tick interrupt, query batteries */
|
|
if (pmu_battery_count) {
|
|
if ((--query_batt_timer) == 0) {
|
|
query_battery_state();
|
|
query_batt_timer = BATTERY_POLLING_COUNT;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case PMU_INT_ENVIRONMENT:
|
|
if (pmu_battery_count)
|
|
query_battery_state();
|
|
pmu_pass_intr(data, len);
|
|
/* len == 6 is probably a bad check. But how do I
|
|
* know what PMU versions send what events here? */
|
|
if (IS_ENABLED(CONFIG_ADB_PMU_EVENT) && len == 6) {
|
|
via_pmu_event(PMU_EVT_POWER, !!(data[1]&8));
|
|
via_pmu_event(PMU_EVT_LID, data[1]&1);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
pmu_pass_intr(data, len);
|
|
}
|
|
goto next;
|
|
}
|
|
|
|
static struct adb_request*
|
|
pmu_sr_intr(void)
|
|
{
|
|
struct adb_request *req;
|
|
int bite = 0;
|
|
|
|
if (in_8(&via2[B]) & TREQ) {
|
|
printk(KERN_ERR "PMU: spurious SR intr (%x)\n", in_8(&via2[B]));
|
|
return NULL;
|
|
}
|
|
/* The ack may not yet be low when we get the interrupt */
|
|
while ((in_8(&via2[B]) & TACK) != 0)
|
|
;
|
|
|
|
/* if reading grab the byte, and reset the interrupt */
|
|
if (pmu_state == reading || pmu_state == reading_intr)
|
|
bite = in_8(&via1[SR]);
|
|
|
|
/* reset TREQ and wait for TACK to go high */
|
|
out_8(&via2[B], in_8(&via2[B]) | TREQ);
|
|
wait_for_ack();
|
|
|
|
switch (pmu_state) {
|
|
case sending:
|
|
req = current_req;
|
|
if (data_len < 0) {
|
|
data_len = req->nbytes - 1;
|
|
send_byte(data_len);
|
|
break;
|
|
}
|
|
if (data_index <= data_len) {
|
|
send_byte(req->data[data_index++]);
|
|
break;
|
|
}
|
|
req->sent = 1;
|
|
data_len = pmu_data_len[req->data[0]][1];
|
|
if (data_len == 0) {
|
|
pmu_state = idle;
|
|
current_req = req->next;
|
|
if (req->reply_expected)
|
|
req_awaiting_reply = req;
|
|
else
|
|
return req;
|
|
} else {
|
|
pmu_state = reading;
|
|
data_index = 0;
|
|
reply_ptr = req->reply + req->reply_len;
|
|
recv_byte();
|
|
}
|
|
break;
|
|
|
|
case intack:
|
|
data_index = 0;
|
|
data_len = -1;
|
|
pmu_state = reading_intr;
|
|
reply_ptr = interrupt_data[int_data_last];
|
|
recv_byte();
|
|
if (gpio_irq >= 0 && !gpio_irq_enabled) {
|
|
enable_irq(gpio_irq);
|
|
gpio_irq_enabled = 1;
|
|
}
|
|
break;
|
|
|
|
case reading:
|
|
case reading_intr:
|
|
if (data_len == -1) {
|
|
data_len = bite;
|
|
if (bite > 32)
|
|
printk(KERN_ERR "PMU: bad reply len %d\n", bite);
|
|
} else if (data_index < 32) {
|
|
reply_ptr[data_index++] = bite;
|
|
}
|
|
if (data_index < data_len) {
|
|
recv_byte();
|
|
break;
|
|
}
|
|
|
|
if (pmu_state == reading_intr) {
|
|
pmu_state = idle;
|
|
int_data_state[int_data_last] = int_data_ready;
|
|
interrupt_data_len[int_data_last] = data_len;
|
|
} else {
|
|
req = current_req;
|
|
/*
|
|
* For PMU sleep and freq change requests, we lock the
|
|
* PMU until it's explicitly unlocked. This avoids any
|
|
* spurrious event polling getting in
|
|
*/
|
|
current_req = req->next;
|
|
req->reply_len += data_index;
|
|
if (req->data[0] == PMU_SLEEP || req->data[0] == PMU_CPU_SPEED)
|
|
pmu_state = locked;
|
|
else
|
|
pmu_state = idle;
|
|
return req;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
printk(KERN_ERR "via_pmu_interrupt: unknown state %d?\n",
|
|
pmu_state);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static irqreturn_t
|
|
via_pmu_interrupt(int irq, void *arg)
|
|
{
|
|
unsigned long flags;
|
|
int intr;
|
|
int nloop = 0;
|
|
int int_data = -1;
|
|
struct adb_request *req = NULL;
|
|
int handled = 0;
|
|
|
|
/* This is a bit brutal, we can probably do better */
|
|
spin_lock_irqsave(&pmu_lock, flags);
|
|
++disable_poll;
|
|
|
|
for (;;) {
|
|
/* On 68k Macs, VIA interrupts are dispatched individually.
|
|
* Unless we are polling, the relevant IRQ flag has already
|
|
* been cleared.
|
|
*/
|
|
intr = 0;
|
|
if (IS_ENABLED(CONFIG_PPC_PMAC) || !irq) {
|
|
intr = in_8(&via1[IFR]) & (SR_INT | CB1_INT);
|
|
out_8(&via1[IFR], intr);
|
|
}
|
|
#ifndef CONFIG_PPC_PMAC
|
|
switch (irq) {
|
|
case IRQ_MAC_ADB_CL:
|
|
intr = CB1_INT;
|
|
break;
|
|
case IRQ_MAC_ADB_SR:
|
|
intr = SR_INT;
|
|
break;
|
|
}
|
|
#endif
|
|
if (intr == 0)
|
|
break;
|
|
handled = 1;
|
|
if (++nloop > 1000) {
|
|
printk(KERN_DEBUG "PMU: stuck in intr loop, "
|
|
"intr=%x, ier=%x pmu_state=%d\n",
|
|
intr, in_8(&via1[IER]), pmu_state);
|
|
break;
|
|
}
|
|
if (intr & CB1_INT) {
|
|
adb_int_pending = 1;
|
|
pmu_irq_stats[11]++;
|
|
}
|
|
if (intr & SR_INT) {
|
|
req = pmu_sr_intr();
|
|
if (req)
|
|
break;
|
|
}
|
|
#ifndef CONFIG_PPC_PMAC
|
|
break;
|
|
#endif
|
|
}
|
|
|
|
recheck:
|
|
if (pmu_state == idle) {
|
|
if (adb_int_pending) {
|
|
if (int_data_state[0] == int_data_empty)
|
|
int_data_last = 0;
|
|
else if (int_data_state[1] == int_data_empty)
|
|
int_data_last = 1;
|
|
else
|
|
goto no_free_slot;
|
|
pmu_state = intack;
|
|
int_data_state[int_data_last] = int_data_fill;
|
|
/* Sounds safer to make sure ACK is high before writing.
|
|
* This helped kill a problem with ADB and some iBooks
|
|
*/
|
|
wait_for_ack();
|
|
send_byte(PMU_INT_ACK);
|
|
adb_int_pending = 0;
|
|
} else if (current_req)
|
|
pmu_start();
|
|
}
|
|
no_free_slot:
|
|
/* Mark the oldest buffer for flushing */
|
|
if (int_data_state[!int_data_last] == int_data_ready) {
|
|
int_data_state[!int_data_last] = int_data_flush;
|
|
int_data = !int_data_last;
|
|
} else if (int_data_state[int_data_last] == int_data_ready) {
|
|
int_data_state[int_data_last] = int_data_flush;
|
|
int_data = int_data_last;
|
|
}
|
|
--disable_poll;
|
|
spin_unlock_irqrestore(&pmu_lock, flags);
|
|
|
|
/* Deal with completed PMU requests outside of the lock */
|
|
if (req) {
|
|
pmu_done(req);
|
|
req = NULL;
|
|
}
|
|
|
|
/* Deal with interrupt datas outside of the lock */
|
|
if (int_data >= 0) {
|
|
pmu_handle_data(interrupt_data[int_data], interrupt_data_len[int_data]);
|
|
spin_lock_irqsave(&pmu_lock, flags);
|
|
++disable_poll;
|
|
int_data_state[int_data] = int_data_empty;
|
|
int_data = -1;
|
|
goto recheck;
|
|
}
|
|
|
|
return IRQ_RETVAL(handled);
|
|
}
|
|
|
|
void
|
|
pmu_unlock(void)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&pmu_lock, flags);
|
|
if (pmu_state == locked)
|
|
pmu_state = idle;
|
|
adb_int_pending = 1;
|
|
spin_unlock_irqrestore(&pmu_lock, flags);
|
|
}
|
|
|
|
|
|
static __maybe_unused irqreturn_t
|
|
gpio1_interrupt(int irq, void *arg)
|
|
{
|
|
unsigned long flags;
|
|
|
|
if ((in_8(gpio_reg + 0x9) & 0x02) == 0) {
|
|
spin_lock_irqsave(&pmu_lock, flags);
|
|
if (gpio_irq_enabled > 0) {
|
|
disable_irq_nosync(gpio_irq);
|
|
gpio_irq_enabled = 0;
|
|
}
|
|
pmu_irq_stats[12]++;
|
|
adb_int_pending = 1;
|
|
spin_unlock_irqrestore(&pmu_lock, flags);
|
|
via_pmu_interrupt(0, NULL);
|
|
return IRQ_HANDLED;
|
|
}
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
void
|
|
pmu_enable_irled(int on)
|
|
{
|
|
struct adb_request req;
|
|
|
|
if (pmu_state == uninitialized)
|
|
return ;
|
|
if (pmu_kind == PMU_KEYLARGO_BASED)
|
|
return ;
|
|
|
|
pmu_request(&req, NULL, 2, PMU_POWER_CTRL, PMU_POW_IRLED |
|
|
(on ? PMU_POW_ON : PMU_POW_OFF));
|
|
pmu_wait_complete(&req);
|
|
}
|
|
|
|
/* Offset between Unix time (1970-based) and Mac time (1904-based) */
|
|
#define RTC_OFFSET 2082844800
|
|
|
|
time64_t pmu_get_time(void)
|
|
{
|
|
struct adb_request req;
|
|
u32 now;
|
|
|
|
if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
|
|
return 0;
|
|
pmu_wait_complete(&req);
|
|
if (req.reply_len != 4)
|
|
pr_err("%s: got %d byte reply\n", __func__, req.reply_len);
|
|
now = (req.reply[0] << 24) + (req.reply[1] << 16) +
|
|
(req.reply[2] << 8) + req.reply[3];
|
|
return (time64_t)now - RTC_OFFSET;
|
|
}
|
|
|
|
int pmu_set_rtc_time(struct rtc_time *tm)
|
|
{
|
|
u32 now;
|
|
struct adb_request req;
|
|
|
|
now = lower_32_bits(rtc_tm_to_time64(tm) + RTC_OFFSET);
|
|
if (pmu_request(&req, NULL, 5, PMU_SET_RTC,
|
|
now >> 24, now >> 16, now >> 8, now) < 0)
|
|
return -ENXIO;
|
|
pmu_wait_complete(&req);
|
|
if (req.reply_len != 0)
|
|
pr_err("%s: got %d byte reply\n", __func__, req.reply_len);
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
pmu_restart(void)
|
|
{
|
|
struct adb_request req;
|
|
|
|
if (pmu_state == uninitialized)
|
|
return;
|
|
|
|
local_irq_disable();
|
|
|
|
drop_interrupts = 1;
|
|
|
|
if (pmu_kind != PMU_KEYLARGO_BASED) {
|
|
pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB |
|
|
PMU_INT_TICK );
|
|
while(!req.complete)
|
|
pmu_poll();
|
|
}
|
|
|
|
pmu_request(&req, NULL, 1, PMU_RESET);
|
|
pmu_wait_complete(&req);
|
|
for (;;)
|
|
;
|
|
}
|
|
|
|
void
|
|
pmu_shutdown(void)
|
|
{
|
|
struct adb_request req;
|
|
|
|
if (pmu_state == uninitialized)
|
|
return;
|
|
|
|
local_irq_disable();
|
|
|
|
drop_interrupts = 1;
|
|
|
|
if (pmu_kind != PMU_KEYLARGO_BASED) {
|
|
pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB |
|
|
PMU_INT_TICK );
|
|
pmu_wait_complete(&req);
|
|
} else {
|
|
/* Disable server mode on shutdown or we'll just
|
|
* wake up again
|
|
*/
|
|
pmu_set_server_mode(0);
|
|
}
|
|
|
|
pmu_request(&req, NULL, 5, PMU_SHUTDOWN,
|
|
'M', 'A', 'T', 'T');
|
|
pmu_wait_complete(&req);
|
|
for (;;)
|
|
;
|
|
}
|
|
|
|
int
|
|
pmu_present(void)
|
|
{
|
|
return pmu_state != uninitialized;
|
|
}
|
|
|
|
#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
|
|
/*
|
|
* Put the powerbook to sleep.
|
|
*/
|
|
|
|
static u32 save_via[8];
|
|
static int __fake_sleep;
|
|
|
|
static void
|
|
save_via_state(void)
|
|
{
|
|
save_via[0] = in_8(&via1[ANH]);
|
|
save_via[1] = in_8(&via1[DIRA]);
|
|
save_via[2] = in_8(&via1[B]);
|
|
save_via[3] = in_8(&via1[DIRB]);
|
|
save_via[4] = in_8(&via1[PCR]);
|
|
save_via[5] = in_8(&via1[ACR]);
|
|
save_via[6] = in_8(&via1[T1CL]);
|
|
save_via[7] = in_8(&via1[T1CH]);
|
|
}
|
|
static void
|
|
restore_via_state(void)
|
|
{
|
|
out_8(&via1[ANH], save_via[0]);
|
|
out_8(&via1[DIRA], save_via[1]);
|
|
out_8(&via1[B], save_via[2]);
|
|
out_8(&via1[DIRB], save_via[3]);
|
|
out_8(&via1[PCR], save_via[4]);
|
|
out_8(&via1[ACR], save_via[5]);
|
|
out_8(&via1[T1CL], save_via[6]);
|
|
out_8(&via1[T1CH], save_via[7]);
|
|
out_8(&via1[IER], IER_CLR | 0x7f); /* disable all intrs */
|
|
out_8(&via1[IFR], 0x7f); /* clear IFR */
|
|
out_8(&via1[IER], IER_SET | SR_INT | CB1_INT);
|
|
}
|
|
|
|
#define GRACKLE_PM (1<<7)
|
|
#define GRACKLE_DOZE (1<<5)
|
|
#define GRACKLE_NAP (1<<4)
|
|
#define GRACKLE_SLEEP (1<<3)
|
|
|
|
static int powerbook_sleep_grackle(void)
|
|
{
|
|
unsigned long save_l2cr;
|
|
unsigned short pmcr1;
|
|
struct adb_request req;
|
|
struct pci_dev *grackle;
|
|
|
|
grackle = pci_get_domain_bus_and_slot(0, 0, 0);
|
|
if (!grackle)
|
|
return -ENODEV;
|
|
|
|
/* Turn off various things. Darwin does some retry tests here... */
|
|
pmu_request(&req, NULL, 2, PMU_POWER_CTRL0, PMU_POW0_OFF|PMU_POW0_HARD_DRIVE);
|
|
pmu_wait_complete(&req);
|
|
pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
|
|
PMU_POW_OFF|PMU_POW_BACKLIGHT|PMU_POW_IRLED|PMU_POW_MEDIABAY);
|
|
pmu_wait_complete(&req);
|
|
|
|
/* For 750, save backside cache setting and disable it */
|
|
save_l2cr = _get_L2CR(); /* (returns -1 if not available) */
|
|
|
|
if (!__fake_sleep) {
|
|
/* Ask the PMU to put us to sleep */
|
|
pmu_request(&req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T');
|
|
pmu_wait_complete(&req);
|
|
}
|
|
|
|
/* The VIA is supposed not to be restored correctly*/
|
|
save_via_state();
|
|
/* We shut down some HW */
|
|
pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,1);
|
|
|
|
pci_read_config_word(grackle, 0x70, &pmcr1);
|
|
/* Apparently, MacOS uses NAP mode for Grackle ??? */
|
|
pmcr1 &= ~(GRACKLE_DOZE|GRACKLE_SLEEP);
|
|
pmcr1 |= GRACKLE_PM|GRACKLE_NAP;
|
|
pci_write_config_word(grackle, 0x70, pmcr1);
|
|
|
|
/* Call low-level ASM sleep handler */
|
|
if (__fake_sleep)
|
|
mdelay(5000);
|
|
else
|
|
low_sleep_handler();
|
|
|
|
/* We're awake again, stop grackle PM */
|
|
pci_read_config_word(grackle, 0x70, &pmcr1);
|
|
pmcr1 &= ~(GRACKLE_PM|GRACKLE_DOZE|GRACKLE_SLEEP|GRACKLE_NAP);
|
|
pci_write_config_word(grackle, 0x70, pmcr1);
|
|
|
|
pci_dev_put(grackle);
|
|
|
|
/* Make sure the PMU is idle */
|
|
pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,0);
|
|
restore_via_state();
|
|
|
|
/* Restore L2 cache */
|
|
if (save_l2cr != 0xffffffff && (save_l2cr & L2CR_L2E) != 0)
|
|
_set_L2CR(save_l2cr);
|
|
|
|
/* Restore userland MMU context */
|
|
switch_mmu_context(NULL, current->active_mm, NULL);
|
|
|
|
/* Power things up */
|
|
pmu_unlock();
|
|
pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
|
|
pmu_wait_complete(&req);
|
|
pmu_request(&req, NULL, 2, PMU_POWER_CTRL0,
|
|
PMU_POW0_ON|PMU_POW0_HARD_DRIVE);
|
|
pmu_wait_complete(&req);
|
|
pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
|
|
PMU_POW_ON|PMU_POW_BACKLIGHT|PMU_POW_CHARGER|PMU_POW_IRLED|PMU_POW_MEDIABAY);
|
|
pmu_wait_complete(&req);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
powerbook_sleep_Core99(void)
|
|
{
|
|
unsigned long save_l2cr;
|
|
unsigned long save_l3cr;
|
|
struct adb_request req;
|
|
|
|
if (pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) < 0) {
|
|
printk(KERN_ERR "Sleep mode not supported on this machine\n");
|
|
return -ENOSYS;
|
|
}
|
|
|
|
if (num_online_cpus() > 1 || cpu_is_offline(0))
|
|
return -EAGAIN;
|
|
|
|
/* Stop environment and ADB interrupts */
|
|
pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, 0);
|
|
pmu_wait_complete(&req);
|
|
|
|
/* Tell PMU what events will wake us up */
|
|
pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, PMU_PWR_CLR_WAKEUP_EVENTS,
|
|
0xff, 0xff);
|
|
pmu_wait_complete(&req);
|
|
pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, PMU_PWR_SET_WAKEUP_EVENTS,
|
|
0, PMU_PWR_WAKEUP_KEY |
|
|
(option_lid_wakeup ? PMU_PWR_WAKEUP_LID_OPEN : 0));
|
|
pmu_wait_complete(&req);
|
|
|
|
/* Save the state of the L2 and L3 caches */
|
|
save_l3cr = _get_L3CR(); /* (returns -1 if not available) */
|
|
save_l2cr = _get_L2CR(); /* (returns -1 if not available) */
|
|
|
|
if (!__fake_sleep) {
|
|
/* Ask the PMU to put us to sleep */
|
|
pmu_request(&req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T');
|
|
pmu_wait_complete(&req);
|
|
}
|
|
|
|
/* The VIA is supposed not to be restored correctly*/
|
|
save_via_state();
|
|
|
|
/* Shut down various ASICs. There's a chance that we can no longer
|
|
* talk to the PMU after this, so I moved it to _after_ sending the
|
|
* sleep command to it. Still need to be checked.
|
|
*/
|
|
pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 1);
|
|
|
|
/* Call low-level ASM sleep handler */
|
|
if (__fake_sleep)
|
|
mdelay(5000);
|
|
else
|
|
low_sleep_handler();
|
|
|
|
/* Restore Apple core ASICs state */
|
|
pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 0);
|
|
|
|
/* Restore VIA */
|
|
restore_via_state();
|
|
|
|
/* tweak LPJ before cpufreq is there */
|
|
loops_per_jiffy *= 2;
|
|
|
|
/* Restore video */
|
|
pmac_call_early_video_resume();
|
|
|
|
/* Restore L2 cache */
|
|
if (save_l2cr != 0xffffffff && (save_l2cr & L2CR_L2E) != 0)
|
|
_set_L2CR(save_l2cr);
|
|
/* Restore L3 cache */
|
|
if (save_l3cr != 0xffffffff && (save_l3cr & L3CR_L3E) != 0)
|
|
_set_L3CR(save_l3cr);
|
|
|
|
/* Restore userland MMU context */
|
|
switch_mmu_context(NULL, current->active_mm, NULL);
|
|
|
|
/* Tell PMU we are ready */
|
|
pmu_unlock();
|
|
pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2);
|
|
pmu_wait_complete(&req);
|
|
pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
|
|
pmu_wait_complete(&req);
|
|
|
|
/* Restore LPJ, cpufreq will adjust the cpu frequency */
|
|
loops_per_jiffy /= 2;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define PB3400_MEM_CTRL 0xf8000000
|
|
#define PB3400_MEM_CTRL_SLEEP 0x70
|
|
|
|
static void __iomem *pb3400_mem_ctrl;
|
|
|
|
static void powerbook_sleep_init_3400(void)
|
|
{
|
|
/* map in the memory controller registers */
|
|
pb3400_mem_ctrl = ioremap(PB3400_MEM_CTRL, 0x100);
|
|
if (pb3400_mem_ctrl == NULL)
|
|
printk(KERN_WARNING "ioremap failed: sleep won't be possible");
|
|
}
|
|
|
|
static int powerbook_sleep_3400(void)
|
|
{
|
|
int i, x;
|
|
unsigned int hid0;
|
|
unsigned long msr;
|
|
struct adb_request sleep_req;
|
|
unsigned int __iomem *mem_ctrl_sleep;
|
|
|
|
if (pb3400_mem_ctrl == NULL)
|
|
return -ENOMEM;
|
|
mem_ctrl_sleep = pb3400_mem_ctrl + PB3400_MEM_CTRL_SLEEP;
|
|
|
|
/* Set the memory controller to keep the memory refreshed
|
|
while we're asleep */
|
|
for (i = 0x403f; i >= 0x4000; --i) {
|
|
out_be32(mem_ctrl_sleep, i);
|
|
do {
|
|
x = (in_be32(mem_ctrl_sleep) >> 16) & 0x3ff;
|
|
} while (x == 0);
|
|
if (x >= 0x100)
|
|
break;
|
|
}
|
|
|
|
/* Ask the PMU to put us to sleep */
|
|
pmu_request(&sleep_req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T');
|
|
pmu_wait_complete(&sleep_req);
|
|
pmu_unlock();
|
|
|
|
pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 1);
|
|
|
|
asleep = 1;
|
|
|
|
/* Put the CPU into sleep mode */
|
|
hid0 = mfspr(SPRN_HID0);
|
|
hid0 = (hid0 & ~(HID0_NAP | HID0_DOZE)) | HID0_SLEEP;
|
|
mtspr(SPRN_HID0, hid0);
|
|
local_irq_enable();
|
|
msr = mfmsr() | MSR_POW;
|
|
while (asleep) {
|
|
mb();
|
|
mtmsr(msr);
|
|
isync();
|
|
}
|
|
local_irq_disable();
|
|
|
|
/* OK, we're awake again, start restoring things */
|
|
out_be32(mem_ctrl_sleep, 0x3f);
|
|
pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_SUSPEND && CONFIG_PPC32 */
|
|
|
|
/*
|
|
* Support for /dev/pmu device
|
|
*/
|
|
#define RB_SIZE 0x10
|
|
struct pmu_private {
|
|
struct list_head list;
|
|
int rb_get;
|
|
int rb_put;
|
|
struct rb_entry {
|
|
unsigned short len;
|
|
unsigned char data[16];
|
|
} rb_buf[RB_SIZE];
|
|
wait_queue_head_t wait;
|
|
spinlock_t lock;
|
|
#if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
|
|
int backlight_locker;
|
|
#endif
|
|
};
|
|
|
|
static LIST_HEAD(all_pmu_pvt);
|
|
static DEFINE_SPINLOCK(all_pvt_lock);
|
|
|
|
static void
|
|
pmu_pass_intr(unsigned char *data, int len)
|
|
{
|
|
struct pmu_private *pp;
|
|
struct list_head *list;
|
|
int i;
|
|
unsigned long flags;
|
|
|
|
if (len > sizeof(pp->rb_buf[0].data))
|
|
len = sizeof(pp->rb_buf[0].data);
|
|
spin_lock_irqsave(&all_pvt_lock, flags);
|
|
for (list = &all_pmu_pvt; (list = list->next) != &all_pmu_pvt; ) {
|
|
pp = list_entry(list, struct pmu_private, list);
|
|
spin_lock(&pp->lock);
|
|
i = pp->rb_put + 1;
|
|
if (i >= RB_SIZE)
|
|
i = 0;
|
|
if (i != pp->rb_get) {
|
|
struct rb_entry *rp = &pp->rb_buf[pp->rb_put];
|
|
rp->len = len;
|
|
memcpy(rp->data, data, len);
|
|
pp->rb_put = i;
|
|
wake_up_interruptible(&pp->wait);
|
|
}
|
|
spin_unlock(&pp->lock);
|
|
}
|
|
spin_unlock_irqrestore(&all_pvt_lock, flags);
|
|
}
|
|
|
|
static int
|
|
pmu_open(struct inode *inode, struct file *file)
|
|
{
|
|
struct pmu_private *pp;
|
|
unsigned long flags;
|
|
|
|
pp = kmalloc(sizeof(struct pmu_private), GFP_KERNEL);
|
|
if (!pp)
|
|
return -ENOMEM;
|
|
pp->rb_get = pp->rb_put = 0;
|
|
spin_lock_init(&pp->lock);
|
|
init_waitqueue_head(&pp->wait);
|
|
mutex_lock(&pmu_info_proc_mutex);
|
|
spin_lock_irqsave(&all_pvt_lock, flags);
|
|
#if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
|
|
pp->backlight_locker = 0;
|
|
#endif
|
|
list_add(&pp->list, &all_pmu_pvt);
|
|
spin_unlock_irqrestore(&all_pvt_lock, flags);
|
|
file->private_data = pp;
|
|
mutex_unlock(&pmu_info_proc_mutex);
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t
|
|
pmu_read(struct file *file, char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct pmu_private *pp = file->private_data;
|
|
DECLARE_WAITQUEUE(wait, current);
|
|
unsigned long flags;
|
|
int ret = 0;
|
|
|
|
if (count < 1 || !pp)
|
|
return -EINVAL;
|
|
|
|
spin_lock_irqsave(&pp->lock, flags);
|
|
add_wait_queue(&pp->wait, &wait);
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
|
|
for (;;) {
|
|
ret = -EAGAIN;
|
|
if (pp->rb_get != pp->rb_put) {
|
|
int i = pp->rb_get;
|
|
struct rb_entry *rp = &pp->rb_buf[i];
|
|
ret = rp->len;
|
|
spin_unlock_irqrestore(&pp->lock, flags);
|
|
if (ret > count)
|
|
ret = count;
|
|
if (ret > 0 && copy_to_user(buf, rp->data, ret))
|
|
ret = -EFAULT;
|
|
if (++i >= RB_SIZE)
|
|
i = 0;
|
|
spin_lock_irqsave(&pp->lock, flags);
|
|
pp->rb_get = i;
|
|
}
|
|
if (ret >= 0)
|
|
break;
|
|
if (file->f_flags & O_NONBLOCK)
|
|
break;
|
|
ret = -ERESTARTSYS;
|
|
if (signal_pending(current))
|
|
break;
|
|
spin_unlock_irqrestore(&pp->lock, flags);
|
|
schedule();
|
|
spin_lock_irqsave(&pp->lock, flags);
|
|
}
|
|
__set_current_state(TASK_RUNNING);
|
|
remove_wait_queue(&pp->wait, &wait);
|
|
spin_unlock_irqrestore(&pp->lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t
|
|
pmu_write(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static __poll_t
|
|
pmu_fpoll(struct file *filp, poll_table *wait)
|
|
{
|
|
struct pmu_private *pp = filp->private_data;
|
|
__poll_t mask = 0;
|
|
unsigned long flags;
|
|
|
|
if (!pp)
|
|
return 0;
|
|
poll_wait(filp, &pp->wait, wait);
|
|
spin_lock_irqsave(&pp->lock, flags);
|
|
if (pp->rb_get != pp->rb_put)
|
|
mask |= EPOLLIN;
|
|
spin_unlock_irqrestore(&pp->lock, flags);
|
|
return mask;
|
|
}
|
|
|
|
static int
|
|
pmu_release(struct inode *inode, struct file *file)
|
|
{
|
|
struct pmu_private *pp = file->private_data;
|
|
unsigned long flags;
|
|
|
|
if (pp) {
|
|
file->private_data = NULL;
|
|
spin_lock_irqsave(&all_pvt_lock, flags);
|
|
list_del(&pp->list);
|
|
spin_unlock_irqrestore(&all_pvt_lock, flags);
|
|
|
|
#if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
|
|
if (pp->backlight_locker)
|
|
pmac_backlight_enable();
|
|
#endif
|
|
|
|
kfree(pp);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
|
|
static void pmac_suspend_disable_irqs(void)
|
|
{
|
|
/* Call platform functions marked "on sleep" */
|
|
pmac_pfunc_i2c_suspend();
|
|
pmac_pfunc_base_suspend();
|
|
}
|
|
|
|
static int powerbook_sleep(suspend_state_t state)
|
|
{
|
|
int error = 0;
|
|
|
|
/* Wait for completion of async requests */
|
|
while (!batt_req.complete)
|
|
pmu_poll();
|
|
|
|
/* Giveup the lazy FPU & vec so we don't have to back them
|
|
* up from the low level code
|
|
*/
|
|
enable_kernel_fp();
|
|
|
|
#ifdef CONFIG_ALTIVEC
|
|
if (cpu_has_feature(CPU_FTR_ALTIVEC))
|
|
enable_kernel_altivec();
|
|
#endif /* CONFIG_ALTIVEC */
|
|
|
|
switch (pmu_kind) {
|
|
case PMU_OHARE_BASED:
|
|
error = powerbook_sleep_3400();
|
|
break;
|
|
case PMU_HEATHROW_BASED:
|
|
case PMU_PADDINGTON_BASED:
|
|
error = powerbook_sleep_grackle();
|
|
break;
|
|
case PMU_KEYLARGO_BASED:
|
|
error = powerbook_sleep_Core99();
|
|
break;
|
|
default:
|
|
return -ENOSYS;
|
|
}
|
|
|
|
if (error)
|
|
return error;
|
|
|
|
mdelay(100);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void pmac_suspend_enable_irqs(void)
|
|
{
|
|
/* Force a poll of ADB interrupts */
|
|
adb_int_pending = 1;
|
|
via_pmu_interrupt(0, NULL);
|
|
|
|
mdelay(10);
|
|
|
|
/* Call platform functions marked "on wake" */
|
|
pmac_pfunc_base_resume();
|
|
pmac_pfunc_i2c_resume();
|
|
}
|
|
|
|
static int pmu_sleep_valid(suspend_state_t state)
|
|
{
|
|
return state == PM_SUSPEND_MEM
|
|
&& (pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, -1) >= 0);
|
|
}
|
|
|
|
static const struct platform_suspend_ops pmu_pm_ops = {
|
|
.enter = powerbook_sleep,
|
|
.valid = pmu_sleep_valid,
|
|
};
|
|
|
|
static int register_pmu_pm_ops(void)
|
|
{
|
|
if (pmu_kind == PMU_OHARE_BASED)
|
|
powerbook_sleep_init_3400();
|
|
ppc_md.suspend_disable_irqs = pmac_suspend_disable_irqs;
|
|
ppc_md.suspend_enable_irqs = pmac_suspend_enable_irqs;
|
|
suspend_set_ops(&pmu_pm_ops);
|
|
|
|
return 0;
|
|
}
|
|
|
|
device_initcall(register_pmu_pm_ops);
|
|
#endif
|
|
|
|
static int pmu_ioctl(struct file *filp,
|
|
u_int cmd, u_long arg)
|
|
{
|
|
__u32 __user *argp = (__u32 __user *)arg;
|
|
int error = -EINVAL;
|
|
|
|
switch (cmd) {
|
|
#ifdef CONFIG_PPC_PMAC
|
|
case PMU_IOC_SLEEP:
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EACCES;
|
|
return pm_suspend(PM_SUSPEND_MEM);
|
|
case PMU_IOC_CAN_SLEEP:
|
|
if (pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, -1) < 0)
|
|
return put_user(0, argp);
|
|
else
|
|
return put_user(1, argp);
|
|
#endif
|
|
|
|
#ifdef CONFIG_PMAC_BACKLIGHT_LEGACY
|
|
/* Compatibility ioctl's for backlight */
|
|
case PMU_IOC_GET_BACKLIGHT:
|
|
{
|
|
int brightness;
|
|
|
|
brightness = pmac_backlight_get_legacy_brightness();
|
|
if (brightness < 0)
|
|
return brightness;
|
|
else
|
|
return put_user(brightness, argp);
|
|
|
|
}
|
|
case PMU_IOC_SET_BACKLIGHT:
|
|
{
|
|
int brightness;
|
|
|
|
error = get_user(brightness, argp);
|
|
if (error)
|
|
return error;
|
|
|
|
return pmac_backlight_set_legacy_brightness(brightness);
|
|
}
|
|
#ifdef CONFIG_INPUT_ADBHID
|
|
case PMU_IOC_GRAB_BACKLIGHT: {
|
|
struct pmu_private *pp = filp->private_data;
|
|
|
|
if (pp->backlight_locker)
|
|
return 0;
|
|
|
|
pp->backlight_locker = 1;
|
|
pmac_backlight_disable();
|
|
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_INPUT_ADBHID */
|
|
#endif /* CONFIG_PMAC_BACKLIGHT_LEGACY */
|
|
|
|
case PMU_IOC_GET_MODEL:
|
|
return put_user(pmu_kind, argp);
|
|
case PMU_IOC_HAS_ADB:
|
|
return put_user(pmu_has_adb, argp);
|
|
}
|
|
return error;
|
|
}
|
|
|
|
static long pmu_unlocked_ioctl(struct file *filp,
|
|
u_int cmd, u_long arg)
|
|
{
|
|
int ret;
|
|
|
|
mutex_lock(&pmu_info_proc_mutex);
|
|
ret = pmu_ioctl(filp, cmd, arg);
|
|
mutex_unlock(&pmu_info_proc_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#ifdef CONFIG_COMPAT
|
|
#define PMU_IOC_GET_BACKLIGHT32 _IOR('B', 1, compat_size_t)
|
|
#define PMU_IOC_SET_BACKLIGHT32 _IOW('B', 2, compat_size_t)
|
|
#define PMU_IOC_GET_MODEL32 _IOR('B', 3, compat_size_t)
|
|
#define PMU_IOC_HAS_ADB32 _IOR('B', 4, compat_size_t)
|
|
#define PMU_IOC_CAN_SLEEP32 _IOR('B', 5, compat_size_t)
|
|
#define PMU_IOC_GRAB_BACKLIGHT32 _IOR('B', 6, compat_size_t)
|
|
|
|
static long compat_pmu_ioctl (struct file *filp, u_int cmd, u_long arg)
|
|
{
|
|
switch (cmd) {
|
|
case PMU_IOC_SLEEP:
|
|
break;
|
|
case PMU_IOC_GET_BACKLIGHT32:
|
|
cmd = PMU_IOC_GET_BACKLIGHT;
|
|
break;
|
|
case PMU_IOC_SET_BACKLIGHT32:
|
|
cmd = PMU_IOC_SET_BACKLIGHT;
|
|
break;
|
|
case PMU_IOC_GET_MODEL32:
|
|
cmd = PMU_IOC_GET_MODEL;
|
|
break;
|
|
case PMU_IOC_HAS_ADB32:
|
|
cmd = PMU_IOC_HAS_ADB;
|
|
break;
|
|
case PMU_IOC_CAN_SLEEP32:
|
|
cmd = PMU_IOC_CAN_SLEEP;
|
|
break;
|
|
case PMU_IOC_GRAB_BACKLIGHT32:
|
|
cmd = PMU_IOC_GRAB_BACKLIGHT;
|
|
break;
|
|
default:
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
return pmu_unlocked_ioctl(filp, cmd, (unsigned long)compat_ptr(arg));
|
|
}
|
|
#endif
|
|
|
|
static const struct file_operations pmu_device_fops = {
|
|
.read = pmu_read,
|
|
.write = pmu_write,
|
|
.poll = pmu_fpoll,
|
|
.unlocked_ioctl = pmu_unlocked_ioctl,
|
|
#ifdef CONFIG_COMPAT
|
|
.compat_ioctl = compat_pmu_ioctl,
|
|
#endif
|
|
.open = pmu_open,
|
|
.release = pmu_release,
|
|
.llseek = noop_llseek,
|
|
};
|
|
|
|
static struct miscdevice pmu_device = {
|
|
PMU_MINOR, "pmu", &pmu_device_fops
|
|
};
|
|
|
|
static int pmu_device_init(void)
|
|
{
|
|
if (pmu_state == uninitialized)
|
|
return 0;
|
|
if (misc_register(&pmu_device) < 0)
|
|
printk(KERN_ERR "via-pmu: cannot register misc device.\n");
|
|
return 0;
|
|
}
|
|
device_initcall(pmu_device_init);
|
|
|
|
|
|
#ifdef DEBUG_SLEEP
|
|
static inline void
|
|
polled_handshake(void)
|
|
{
|
|
via2[B] &= ~TREQ; eieio();
|
|
while ((via2[B] & TACK) != 0)
|
|
;
|
|
via2[B] |= TREQ; eieio();
|
|
while ((via2[B] & TACK) == 0)
|
|
;
|
|
}
|
|
|
|
static inline void
|
|
polled_send_byte(int x)
|
|
{
|
|
via1[ACR] |= SR_OUT | SR_EXT; eieio();
|
|
via1[SR] = x; eieio();
|
|
polled_handshake();
|
|
}
|
|
|
|
static inline int
|
|
polled_recv_byte(void)
|
|
{
|
|
int x;
|
|
|
|
via1[ACR] = (via1[ACR] & ~SR_OUT) | SR_EXT; eieio();
|
|
x = via1[SR]; eieio();
|
|
polled_handshake();
|
|
x = via1[SR]; eieio();
|
|
return x;
|
|
}
|
|
|
|
int
|
|
pmu_polled_request(struct adb_request *req)
|
|
{
|
|
unsigned long flags;
|
|
int i, l, c;
|
|
|
|
req->complete = 1;
|
|
c = req->data[0];
|
|
l = pmu_data_len[c][0];
|
|
if (l >= 0 && req->nbytes != l + 1)
|
|
return -EINVAL;
|
|
|
|
local_irq_save(flags);
|
|
while (pmu_state != idle)
|
|
pmu_poll();
|
|
|
|
while ((via2[B] & TACK) == 0)
|
|
;
|
|
polled_send_byte(c);
|
|
if (l < 0) {
|
|
l = req->nbytes - 1;
|
|
polled_send_byte(l);
|
|
}
|
|
for (i = 1; i <= l; ++i)
|
|
polled_send_byte(req->data[i]);
|
|
|
|
l = pmu_data_len[c][1];
|
|
if (l < 0)
|
|
l = polled_recv_byte();
|
|
for (i = 0; i < l; ++i)
|
|
req->reply[i + req->reply_len] = polled_recv_byte();
|
|
|
|
if (req->done)
|
|
(*req->done)(req);
|
|
|
|
local_irq_restore(flags);
|
|
return 0;
|
|
}
|
|
|
|
/* N.B. This doesn't work on the 3400 */
|
|
void pmu_blink(int n)
|
|
{
|
|
struct adb_request req;
|
|
|
|
memset(&req, 0, sizeof(req));
|
|
|
|
for (; n > 0; --n) {
|
|
req.nbytes = 4;
|
|
req.done = NULL;
|
|
req.data[0] = 0xee;
|
|
req.data[1] = 4;
|
|
req.data[2] = 0;
|
|
req.data[3] = 1;
|
|
req.reply[0] = ADB_RET_OK;
|
|
req.reply_len = 1;
|
|
req.reply_expected = 0;
|
|
pmu_polled_request(&req);
|
|
mdelay(50);
|
|
req.nbytes = 4;
|
|
req.done = NULL;
|
|
req.data[0] = 0xee;
|
|
req.data[1] = 4;
|
|
req.data[2] = 0;
|
|
req.data[3] = 0;
|
|
req.reply[0] = ADB_RET_OK;
|
|
req.reply_len = 1;
|
|
req.reply_expected = 0;
|
|
pmu_polled_request(&req);
|
|
mdelay(50);
|
|
}
|
|
mdelay(50);
|
|
}
|
|
#endif /* DEBUG_SLEEP */
|
|
|
|
#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
|
|
int pmu_sys_suspended;
|
|
|
|
static int pmu_syscore_suspend(void)
|
|
{
|
|
/* Suspend PMU event interrupts */
|
|
pmu_suspend();
|
|
pmu_sys_suspended = 1;
|
|
|
|
#ifdef CONFIG_PMAC_BACKLIGHT
|
|
/* Tell backlight code not to muck around with the chip anymore */
|
|
pmu_backlight_set_sleep(1);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void pmu_syscore_resume(void)
|
|
{
|
|
struct adb_request req;
|
|
|
|
if (!pmu_sys_suspended)
|
|
return;
|
|
|
|
/* Tell PMU we are ready */
|
|
pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2);
|
|
pmu_wait_complete(&req);
|
|
|
|
#ifdef CONFIG_PMAC_BACKLIGHT
|
|
/* Tell backlight code it can use the chip again */
|
|
pmu_backlight_set_sleep(0);
|
|
#endif
|
|
/* Resume PMU event interrupts */
|
|
pmu_resume();
|
|
pmu_sys_suspended = 0;
|
|
}
|
|
|
|
static struct syscore_ops pmu_syscore_ops = {
|
|
.suspend = pmu_syscore_suspend,
|
|
.resume = pmu_syscore_resume,
|
|
};
|
|
|
|
static int pmu_syscore_register(void)
|
|
{
|
|
register_syscore_ops(&pmu_syscore_ops);
|
|
|
|
return 0;
|
|
}
|
|
subsys_initcall(pmu_syscore_register);
|
|
#endif /* CONFIG_SUSPEND && CONFIG_PPC32 */
|
|
|
|
EXPORT_SYMBOL(pmu_request);
|
|
EXPORT_SYMBOL(pmu_queue_request);
|
|
EXPORT_SYMBOL(pmu_poll);
|
|
EXPORT_SYMBOL(pmu_poll_adb);
|
|
EXPORT_SYMBOL(pmu_wait_complete);
|
|
EXPORT_SYMBOL(pmu_suspend);
|
|
EXPORT_SYMBOL(pmu_resume);
|
|
EXPORT_SYMBOL(pmu_unlock);
|
|
#if defined(CONFIG_PPC32)
|
|
EXPORT_SYMBOL(pmu_enable_irled);
|
|
EXPORT_SYMBOL(pmu_battery_count);
|
|
EXPORT_SYMBOL(pmu_batteries);
|
|
EXPORT_SYMBOL(pmu_power_flags);
|
|
#endif /* CONFIG_SUSPEND && CONFIG_PPC32 */
|
|
|