730745a5c4
This is the first part of a rework of the PowerMac i2c code. It completely reworks the "low_i2c" layer. It is now more flexible, supports KeyWest, SMU and PMU i2c busses, and provides functions to match device nodes to i2c busses and adapters. This patch also extends & fix some bugs in the SMU driver related to i2c support and removes the clock spreading hacks from the pmac feature code rather than adapting them to the new API since they'll be replaced by the platform function code completely in patch 3/5 Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2908 lines
70 KiB
C
2908 lines
70 KiB
C
/*
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* Device driver for the via-pmu on Apple 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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*
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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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* - Move sleep code out of here to pmac_pm, merge into new
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* common PM infrastructure
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* - Move backlight code out as well
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* - Save/Restore PCI space properly
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*
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*/
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#include <stdarg.h>
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#include <linux/config.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.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/smp_lock.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/init.h>
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#include <linux/interrupt.h>
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#include <linux/device.h>
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#include <linux/sysdev.h>
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#include <linux/suspend.h>
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#include <linux/syscalls.h>
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#include <linux/cpu.h>
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#include <asm/prom.h>
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#include <asm/machdep.h>
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#include <asm/io.h>
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#include <asm/pgtable.h>
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#include <asm/system.h>
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#include <asm/sections.h>
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#include <asm/irq.h>
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#include <asm/pmac_feature.h>
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#include <asm/uaccess.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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#ifdef CONFIG_PMAC_BACKLIGHT
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#include <asm/backlight.h>
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#endif
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#ifdef CONFIG_PPC32
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#include <asm/open_pic.h>
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#endif
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/* Some compile options */
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#undef SUSPEND_USES_PMU
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#define DEBUG_SLEEP
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#undef HACKED_PCI_SAVE
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/* Misc minor number allocated for /dev/pmu */
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#define PMU_MINOR 154
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/* How many iterations between battery polls */
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#define BATTERY_POLLING_COUNT 2
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static volatile unsigned char __iomem *via;
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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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#define TACK 0x08 /* Transfer acknowledge (input) */
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#define TREQ 0x10 /* Transfer request (output) */
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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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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 struct adb_request bright_req_1, bright_req_2;
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static struct device_node *vias;
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static int pmu_kind = PMU_UNKNOWN;
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static int pmu_fully_inited = 0;
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static int pmu_has_adb;
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static struct device_node *gpio_node;
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static unsigned char __iomem *gpio_reg = NULL;
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static int gpio_irq = -1;
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static int gpio_irq_enabled = -1;
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static volatile int pmu_suspended = 0;
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static spinlock_t 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_PM) && defined(CONFIG_PPC32)
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static int option_lid_wakeup = 1;
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#endif /* CONFIG_PM && CONFIG_PPC32 */
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static int sleep_in_progress;
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static unsigned long async_req_locks;
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static unsigned int pmu_irq_stats[11];
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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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int pmu_cur_battery;
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unsigned int pmu_power_flags;
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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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#if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
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extern int disable_kernel_backlight;
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#endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
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int __fake_sleep;
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int asleep;
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struct notifier_block *sleep_notifier_list;
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#ifdef CONFIG_ADB
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static int adb_dev_map = 0;
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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, struct pt_regs *regs);
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static irqreturn_t gpio1_interrupt(int irq, void *arg, struct pt_regs *regs);
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static int proc_get_info(char *page, char **start, off_t off,
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int count, int *eof, void *data);
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static int proc_get_irqstats(char *page, char **start, off_t off,
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int count, int *eof, void *data);
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#ifdef CONFIG_PMAC_BACKLIGHT
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static int pmu_set_backlight_level(int level, void* data);
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static int pmu_set_backlight_enable(int on, int level, void* data);
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#endif /* CONFIG_PMAC_BACKLIGHT */
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static void pmu_pass_intr(unsigned char *data, int len);
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static int proc_get_batt(char *page, char **start, off_t off,
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int count, int *eof, void *data);
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static int proc_read_options(char *page, char **start, off_t off,
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int count, int *eof, void *data);
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static int proc_write_options(struct file *file, const char __user *buffer,
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unsigned long count, void *data);
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#ifdef CONFIG_ADB
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struct adb_driver via_pmu_driver = {
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"PMU",
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pmu_probe,
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pmu_init,
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pmu_send_request,
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pmu_adb_autopoll,
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pmu_poll_adb,
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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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int pmu_wink(struct adb_request *req);
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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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#ifdef CONFIG_PMAC_BACKLIGHT
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static struct backlight_controller pmu_backlight_controller = {
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pmu_set_backlight_enable,
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pmu_set_backlight_level
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};
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#endif /* CONFIG_PMAC_BACKLIGHT */
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int __init find_via_pmu(void)
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{
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u64 taddr;
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u32 *reg;
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if (via != 0)
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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 = (u32 *)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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spin_lock_init(&pmu_lock);
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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 (vias->parent->name && ((strcmp(vias->parent->name, "ohare") == 0)
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|| device_is_compatible(vias->parent, "ohare")))
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pmu_kind = PMU_OHARE_BASED;
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else if (device_is_compatible(vias->parent, "paddington"))
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pmu_kind = PMU_PADDINGTON_BASED;
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else if (device_is_compatible(vias->parent, "heathrow"))
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pmu_kind = PMU_HEATHROW_BASED;
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else if (device_is_compatible(vias->parent, "Keylargo")
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|| device_is_compatible(vias->parent, "K2-Keylargo")) {
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struct device_node *gpiop;
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u64 gaddr = OF_BAD_ADDR;
|
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|
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pmu_kind = PMU_KEYLARGO_BASED;
|
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pmu_has_adb = (find_type_devices("adb") != NULL);
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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 = (u32 *)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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}
|
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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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} else
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pmu_kind = PMU_UNKNOWN;
|
|
|
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via = ioremap(taddr, 0x2000);
|
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if (via == NULL) {
|
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printk(KERN_ERR "via-pmu: Can't map address !\n");
|
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goto fail;
|
|
}
|
|
|
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out_8(&via[IER], IER_CLR | 0x7f); /* disable all intrs */
|
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out_8(&via[IFR], 0x7f); /* clear IFR */
|
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|
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pmu_state = idle;
|
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|
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if (!init_pmu()) {
|
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via = NULL;
|
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return 0;
|
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}
|
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|
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printk(KERN_INFO "PMU driver v%d initialized for %s, firmware: %02x\n",
|
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PMU_DRIVER_VERSION, pbook_type[pmu_kind], pmu_version);
|
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|
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sys_ctrler = SYS_CTRLER_PMU;
|
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|
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return 1;
|
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fail:
|
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of_node_put(vias);
|
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vias = NULL;
|
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return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_ADB
|
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static int pmu_probe(void)
|
|
{
|
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return vias == NULL? -ENODEV: 0;
|
|
}
|
|
|
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static int __init pmu_init(void)
|
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{
|
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if (vias == NULL)
|
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return -ENODEV;
|
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return 0;
|
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}
|
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#endif /* CONFIG_ADB */
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
if (vias == NULL)
|
|
return -ENODEV;
|
|
|
|
bright_req_1.complete = 1;
|
|
bright_req_2.complete = 1;
|
|
batt_req.complete = 1;
|
|
|
|
#ifndef CONFIG_PPC_MERGE
|
|
if (pmu_kind == PMU_KEYLARGO_BASED)
|
|
openpic_set_irq_priority(vias->intrs[0].line,
|
|
OPENPIC_PRIORITY_DEFAULT + 1);
|
|
#endif
|
|
|
|
if (request_irq(vias->intrs[0].line, via_pmu_interrupt, 0, "VIA-PMU",
|
|
(void *)0)) {
|
|
printk(KERN_ERR "VIA-PMU: can't get irq %d\n",
|
|
vias->intrs[0].line);
|
|
return -EAGAIN;
|
|
}
|
|
|
|
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_node->n_intrs > 0)
|
|
gpio_irq = gpio_node->intrs[0].line;
|
|
|
|
if (gpio_irq != -1) {
|
|
if (request_irq(gpio_irq, gpio1_interrupt, 0,
|
|
"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(&via[IER], IER_SET | SR_INT | CB1_INT);
|
|
|
|
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 (vias == NULL)
|
|
return -ENODEV;
|
|
|
|
#ifdef CONFIG_PMAC_BACKLIGHT
|
|
/* Enable backlight */
|
|
register_backlight_controller(&pmu_backlight_controller, NULL, "pmu");
|
|
#endif /* CONFIG_PMAC_BACKLIGHT */
|
|
|
|
#ifdef CONFIG_PPC32
|
|
if (machine_is_compatible("AAPL,3400/2400") ||
|
|
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 (machine_is_compatible("AAPL,PowerBook1998") ||
|
|
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 = find_devices("power-mgt");
|
|
u32 *prim_info = NULL;
|
|
if (prim)
|
|
prim_info = (u32 *)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;
|
|
}
|
|
}
|
|
#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] = create_proc_read_entry(title, 0, proc_pmu_root,
|
|
proc_get_batt, (void *)i);
|
|
}
|
|
|
|
proc_pmu_info = create_proc_read_entry("info", 0, proc_pmu_root,
|
|
proc_get_info, NULL);
|
|
proc_pmu_irqstats = create_proc_read_entry("interrupts", 0, proc_pmu_root,
|
|
proc_get_irqstats, NULL);
|
|
proc_pmu_options = create_proc_entry("options", 0600, proc_pmu_root);
|
|
if (proc_pmu_options) {
|
|
proc_pmu_options->nlink = 1;
|
|
proc_pmu_options->read_proc = proc_read_options;
|
|
proc_pmu_options->write_proc = proc_write_options;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
device_initcall(via_pmu_dev_init);
|
|
|
|
static int
|
|
init_pmu(void)
|
|
{
|
|
int timeout;
|
|
struct adb_request req;
|
|
|
|
out_8(&via[B], via[B] | TREQ); /* negate TREQ */
|
|
out_8(&via[DIRB], (via[DIRB] | TREQ) & ~TACK); /* TACK in, TREQ out */
|
|
|
|
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, 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");
|
|
}
|
|
}
|
|
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)
|
|
{
|
|
/* 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;
|
|
|
|
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:
|
|
printk(KERN_WARNING "pmu.c : unrecognized battery info, len: %d, %02x %02x %02x %02x\n",
|
|
req->reply_len, req->reply[0], req->reply[1], req->reply[2], req->reply[3]);
|
|
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);
|
|
}
|
|
|
|
static int
|
|
proc_get_info(char *page, char **start, off_t off,
|
|
int count, int *eof, void *data)
|
|
{
|
|
char* p = page;
|
|
|
|
p += sprintf(p, "PMU driver version : %d\n", PMU_DRIVER_VERSION);
|
|
p += sprintf(p, "PMU firmware version : %02x\n", pmu_version);
|
|
p += sprintf(p, "AC Power : %d\n",
|
|
((pmu_power_flags & PMU_PWR_AC_PRESENT) != 0));
|
|
p += sprintf(p, "Battery count : %d\n", pmu_battery_count);
|
|
|
|
return p - page;
|
|
}
|
|
|
|
static int
|
|
proc_get_irqstats(char *page, char **start, off_t off,
|
|
int count, int *eof, void *data)
|
|
{
|
|
int i;
|
|
char* p = page;
|
|
static const char *irq_names[] = {
|
|
"Total CB1 triggered events",
|
|
"Total GPIO1 triggered events",
|
|
"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"
|
|
};
|
|
|
|
for (i=0; i<11; i++) {
|
|
p += sprintf(p, " %2u: %10u (%s)\n",
|
|
i, pmu_irq_stats[i], irq_names[i]);
|
|
}
|
|
return p - page;
|
|
}
|
|
|
|
static int
|
|
proc_get_batt(char *page, char **start, off_t off,
|
|
int count, int *eof, void *data)
|
|
{
|
|
long batnum = (long)data;
|
|
char *p = page;
|
|
|
|
p += sprintf(p, "\n");
|
|
p += sprintf(p, "flags : %08x\n",
|
|
pmu_batteries[batnum].flags);
|
|
p += sprintf(p, "charge : %d\n",
|
|
pmu_batteries[batnum].charge);
|
|
p += sprintf(p, "max_charge : %d\n",
|
|
pmu_batteries[batnum].max_charge);
|
|
p += sprintf(p, "current : %d\n",
|
|
pmu_batteries[batnum].amperage);
|
|
p += sprintf(p, "voltage : %d\n",
|
|
pmu_batteries[batnum].voltage);
|
|
p += sprintf(p, "time rem. : %d\n",
|
|
pmu_batteries[batnum].time_remaining);
|
|
|
|
return p - page;
|
|
}
|
|
|
|
static int
|
|
proc_read_options(char *page, char **start, off_t off,
|
|
int count, int *eof, void *data)
|
|
{
|
|
char *p = page;
|
|
|
|
#if defined(CONFIG_PM) && defined(CONFIG_PPC32)
|
|
if (pmu_kind == PMU_KEYLARGO_BASED &&
|
|
pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0)
|
|
p += sprintf(p, "lid_wakeup=%d\n", option_lid_wakeup);
|
|
#endif
|
|
if (pmu_kind == PMU_KEYLARGO_BASED)
|
|
p += sprintf(p, "server_mode=%d\n", option_server_mode);
|
|
|
|
return p - page;
|
|
}
|
|
|
|
static int
|
|
proc_write_options(struct file *file, const char __user *buffer,
|
|
unsigned long count, void *data)
|
|
{
|
|
char tmp[33];
|
|
char *label, *val;
|
|
unsigned long 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_PM) && 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;
|
|
}
|
|
|
|
#ifdef CONFIG_ADB
|
|
/* Send an ADB command */
|
|
static int
|
|
pmu_send_request(struct adb_request *req, int sync)
|
|
{
|
|
int i, ret;
|
|
|
|
if ((vias == NULL) || (!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 ((vias == NULL) || (!pmu_fully_inited) || !pmu_has_adb)
|
|
return -ENXIO;
|
|
|
|
if (devs) {
|
|
adb_dev_map = 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;
|
|
}
|
|
|
|
/* Reset the ADB bus */
|
|
static int
|
|
pmu_adb_reset_bus(void)
|
|
{
|
|
struct adb_request req;
|
|
int save_autopoll = adb_dev_map;
|
|
|
|
if ((vias == NULL) || (!pmu_fully_inited) || !pmu_has_adb)
|
|
return -ENXIO;
|
|
|
|
/* anyone got a better idea?? */
|
|
pmu_adb_autopoll(0);
|
|
|
|
req.nbytes = 5;
|
|
req.done = NULL;
|
|
req.data[0] = PMU_ADB_CMD;
|
|
req.data[1] = 0;
|
|
req.data[2] = ADB_BUSRESET;
|
|
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 (vias == NULL)
|
|
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 (via == NULL) {
|
|
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 != 0) {
|
|
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(&via[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)
|
|
{
|
|
volatile unsigned char __iomem *v = via;
|
|
|
|
out_8(&v[ACR], in_8(&v[ACR]) | SR_OUT | SR_EXT);
|
|
out_8(&v[SR], x);
|
|
out_8(&v[B], in_8(&v[B]) & ~TREQ); /* assert TREQ */
|
|
(void)in_8(&v[B]);
|
|
}
|
|
|
|
static inline void
|
|
recv_byte(void)
|
|
{
|
|
volatile unsigned char __iomem *v = via;
|
|
|
|
out_8(&v[ACR], (in_8(&v[ACR]) & ~SR_OUT) | SR_EXT);
|
|
in_8(&v[SR]); /* resets SR */
|
|
out_8(&v[B], in_8(&v[B]) & ~TREQ);
|
|
(void)in_8(&v[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 == 0 || 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 (!via)
|
|
return;
|
|
if (disable_poll)
|
|
return;
|
|
via_pmu_interrupt(0, NULL, NULL);
|
|
}
|
|
|
|
void
|
|
pmu_poll_adb(void)
|
|
{
|
|
if (!via)
|
|
return;
|
|
if (disable_poll)
|
|
return;
|
|
/* Kicks ADB read when PMU is suspended */
|
|
adb_int_pending = 1;
|
|
do {
|
|
via_pmu_interrupt(0, NULL, NULL);
|
|
} while (pmu_suspended && (adb_int_pending || pmu_state != idle
|
|
|| req_awaiting_reply));
|
|
}
|
|
|
|
void
|
|
pmu_wait_complete(struct adb_request *req)
|
|
{
|
|
if (!via)
|
|
return;
|
|
while((pmu_state != idle && pmu_state != locked) || !req->complete)
|
|
via_pmu_interrupt(0, NULL, 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;
|
|
#ifdef SUSPEND_USES_PMU
|
|
struct adb_request *req;
|
|
#endif
|
|
if (!via)
|
|
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, NULL);
|
|
spin_lock_irqsave(&pmu_lock, flags);
|
|
if (!adb_int_pending && pmu_state == idle && !req_awaiting_reply) {
|
|
#ifdef SUSPEND_USES_PMU
|
|
pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, 0);
|
|
spin_unlock_irqrestore(&pmu_lock, flags);
|
|
while(!req.complete)
|
|
pmu_poll();
|
|
#else /* SUSPEND_USES_PMU */
|
|
if (gpio_irq >= 0)
|
|
disable_irq_nosync(gpio_irq);
|
|
out_8(&via[IER], CB1_INT | IER_CLR);
|
|
spin_unlock_irqrestore(&pmu_lock, flags);
|
|
#endif /* SUSPEND_USES_PMU */
|
|
break;
|
|
}
|
|
} while (1);
|
|
}
|
|
|
|
void
|
|
pmu_resume(void)
|
|
{
|
|
unsigned long flags;
|
|
|
|
if (!via || (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;
|
|
#ifdef SUSPEND_USES_PMU
|
|
pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
|
|
spin_unlock_irqrestore(&pmu_lock, flags);
|
|
while(!req.complete)
|
|
pmu_poll();
|
|
#else /* SUSPEND_USES_PMU */
|
|
if (gpio_irq >= 0)
|
|
enable_irq(gpio_irq);
|
|
out_8(&via[IER], CB1_INT | IER_SET);
|
|
spin_unlock_irqrestore(&pmu_lock, flags);
|
|
pmu_poll();
|
|
#endif /* SUSPEND_USES_PMU */
|
|
}
|
|
|
|
/* Interrupt data could be the result data from an ADB cmd */
|
|
static void
|
|
pmu_handle_data(unsigned char *data, int len, struct pt_regs *regs)
|
|
{
|
|
unsigned char ints, pirq;
|
|
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;
|
|
}
|
|
|
|
for (pirq = 0; pirq < 8; pirq++)
|
|
if (ints & (1 << pirq))
|
|
break;
|
|
pmu_irq_stats[pirq]++;
|
|
i++;
|
|
ints &= ~(1 << pirq);
|
|
|
|
/* 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
|
|
*/
|
|
if ((1 << pirq) & PMU_INT_ADB) {
|
|
if ((data[0] & PMU_INT_ADB_AUTO) == 0) {
|
|
struct adb_request *req = req_awaiting_reply;
|
|
if (req == 0) {
|
|
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 {
|
|
if (len == 4 && data[1] == 0x2c) {
|
|
extern int xmon_wants_key, xmon_adb_keycode;
|
|
if (xmon_wants_key) {
|
|
xmon_adb_keycode = data[2];
|
|
return;
|
|
}
|
|
}
|
|
#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, regs, 1);
|
|
#endif /* CONFIG_ADB */
|
|
}
|
|
}
|
|
/* Sound/brightness button pressed */
|
|
else if ((1 << pirq) & PMU_INT_SNDBRT) {
|
|
#ifdef CONFIG_PMAC_BACKLIGHT
|
|
if (len == 3)
|
|
#ifdef CONFIG_INPUT_ADBHID
|
|
if (!disable_kernel_backlight)
|
|
#endif /* CONFIG_INPUT_ADBHID */
|
|
set_backlight_level(data[1] >> 4);
|
|
#endif /* CONFIG_PMAC_BACKLIGHT */
|
|
}
|
|
/* Tick interrupt */
|
|
else if ((1 << pirq) & PMU_INT_TICK) {
|
|
/* Environement or tick interrupt, query batteries */
|
|
if (pmu_battery_count) {
|
|
if ((--query_batt_timer) == 0) {
|
|
query_battery_state();
|
|
query_batt_timer = BATTERY_POLLING_COUNT;
|
|
}
|
|
}
|
|
}
|
|
else if ((1 << pirq) & PMU_INT_ENVIRONMENT) {
|
|
if (pmu_battery_count)
|
|
query_battery_state();
|
|
pmu_pass_intr(data, len);
|
|
} else {
|
|
pmu_pass_intr(data, len);
|
|
}
|
|
goto next;
|
|
}
|
|
|
|
static struct adb_request*
|
|
pmu_sr_intr(struct pt_regs *regs)
|
|
{
|
|
struct adb_request *req;
|
|
int bite = 0;
|
|
|
|
if (via[B] & TREQ) {
|
|
printk(KERN_ERR "PMU: spurious SR intr (%x)\n", via[B]);
|
|
out_8(&via[IFR], SR_INT);
|
|
return NULL;
|
|
}
|
|
/* The ack may not yet be low when we get the interrupt */
|
|
while ((in_8(&via[B]) & TACK) != 0)
|
|
;
|
|
|
|
/* if reading grab the byte, and reset the interrupt */
|
|
if (pmu_state == reading || pmu_state == reading_intr)
|
|
bite = in_8(&via[SR]);
|
|
|
|
/* reset TREQ and wait for TACK to go high */
|
|
out_8(&via[B], in_8(&via[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 explicitely 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, struct pt_regs *regs)
|
|
{
|
|
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 (;;) {
|
|
intr = in_8(&via[IFR]) & (SR_INT | CB1_INT);
|
|
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(&via[IER]), pmu_state);
|
|
break;
|
|
}
|
|
out_8(&via[IFR], intr);
|
|
if (intr & CB1_INT) {
|
|
adb_int_pending = 1;
|
|
pmu_irq_stats[0]++;
|
|
}
|
|
if (intr & SR_INT) {
|
|
req = pmu_sr_intr(regs);
|
|
if (req)
|
|
break;
|
|
}
|
|
}
|
|
|
|
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], regs);
|
|
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 irqreturn_t
|
|
gpio1_interrupt(int irq, void *arg, struct pt_regs *regs)
|
|
{
|
|
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[1]++;
|
|
adb_int_pending = 1;
|
|
spin_unlock_irqrestore(&pmu_lock, flags);
|
|
via_pmu_interrupt(0, NULL, NULL);
|
|
return IRQ_HANDLED;
|
|
}
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
#ifdef CONFIG_PMAC_BACKLIGHT
|
|
static int backlight_to_bright[] = {
|
|
0x7f, 0x46, 0x42, 0x3e, 0x3a, 0x36, 0x32, 0x2e,
|
|
0x2a, 0x26, 0x22, 0x1e, 0x1a, 0x16, 0x12, 0x0e
|
|
};
|
|
|
|
static int
|
|
pmu_set_backlight_enable(int on, int level, void* data)
|
|
{
|
|
struct adb_request req;
|
|
|
|
if (vias == NULL)
|
|
return -ENODEV;
|
|
|
|
if (on) {
|
|
pmu_request(&req, NULL, 2, PMU_BACKLIGHT_BRIGHT,
|
|
backlight_to_bright[level]);
|
|
pmu_wait_complete(&req);
|
|
}
|
|
pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
|
|
PMU_POW_BACKLIGHT | (on ? PMU_POW_ON : PMU_POW_OFF));
|
|
pmu_wait_complete(&req);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
pmu_bright_complete(struct adb_request *req)
|
|
{
|
|
if (req == &bright_req_1)
|
|
clear_bit(1, &async_req_locks);
|
|
if (req == &bright_req_2)
|
|
clear_bit(2, &async_req_locks);
|
|
}
|
|
|
|
static int
|
|
pmu_set_backlight_level(int level, void* data)
|
|
{
|
|
if (vias == NULL)
|
|
return -ENODEV;
|
|
|
|
if (test_and_set_bit(1, &async_req_locks))
|
|
return -EAGAIN;
|
|
pmu_request(&bright_req_1, pmu_bright_complete, 2, PMU_BACKLIGHT_BRIGHT,
|
|
backlight_to_bright[level]);
|
|
if (test_and_set_bit(2, &async_req_locks))
|
|
return -EAGAIN;
|
|
pmu_request(&bright_req_2, pmu_bright_complete, 2, PMU_POWER_CTRL,
|
|
PMU_POW_BACKLIGHT | (level > BACKLIGHT_OFF ?
|
|
PMU_POW_ON : PMU_POW_OFF));
|
|
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_PMAC_BACKLIGHT */
|
|
|
|
void
|
|
pmu_enable_irled(int on)
|
|
{
|
|
struct adb_request req;
|
|
|
|
if (vias == NULL)
|
|
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);
|
|
}
|
|
|
|
void
|
|
pmu_restart(void)
|
|
{
|
|
struct adb_request req;
|
|
|
|
if (via == NULL)
|
|
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 (via == NULL)
|
|
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 via != 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
static LIST_HEAD(sleep_notifiers);
|
|
|
|
int
|
|
pmu_register_sleep_notifier(struct pmu_sleep_notifier *n)
|
|
{
|
|
struct list_head *list;
|
|
struct pmu_sleep_notifier *notifier;
|
|
|
|
for (list = sleep_notifiers.next; list != &sleep_notifiers;
|
|
list = list->next) {
|
|
notifier = list_entry(list, struct pmu_sleep_notifier, list);
|
|
if (n->priority > notifier->priority)
|
|
break;
|
|
}
|
|
__list_add(&n->list, list->prev, list);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(pmu_register_sleep_notifier);
|
|
|
|
int
|
|
pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* n)
|
|
{
|
|
if (n->list.next == 0)
|
|
return -ENOENT;
|
|
list_del(&n->list);
|
|
n->list.next = NULL;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(pmu_unregister_sleep_notifier);
|
|
#endif /* CONFIG_PM */
|
|
|
|
#if defined(CONFIG_PM) && defined(CONFIG_PPC32)
|
|
|
|
/* Sleep is broadcast last-to-first */
|
|
static int
|
|
broadcast_sleep(int when, int fallback)
|
|
{
|
|
int ret = PBOOK_SLEEP_OK;
|
|
struct list_head *list;
|
|
struct pmu_sleep_notifier *notifier;
|
|
|
|
for (list = sleep_notifiers.prev; list != &sleep_notifiers;
|
|
list = list->prev) {
|
|
notifier = list_entry(list, struct pmu_sleep_notifier, list);
|
|
ret = notifier->notifier_call(notifier, when);
|
|
if (ret != PBOOK_SLEEP_OK) {
|
|
printk(KERN_DEBUG "sleep %d rejected by %p (%p)\n",
|
|
when, notifier, notifier->notifier_call);
|
|
for (; list != &sleep_notifiers; list = list->next) {
|
|
notifier = list_entry(list, struct pmu_sleep_notifier, list);
|
|
notifier->notifier_call(notifier, fallback);
|
|
}
|
|
return ret;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* Wake is broadcast first-to-last */
|
|
static int
|
|
broadcast_wake(void)
|
|
{
|
|
int ret = PBOOK_SLEEP_OK;
|
|
struct list_head *list;
|
|
struct pmu_sleep_notifier *notifier;
|
|
|
|
for (list = sleep_notifiers.next; list != &sleep_notifiers;
|
|
list = list->next) {
|
|
notifier = list_entry(list, struct pmu_sleep_notifier, list);
|
|
notifier->notifier_call(notifier, PBOOK_WAKE);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* This struct is used to store config register values for
|
|
* PCI devices which may get powered off when we sleep.
|
|
*/
|
|
static struct pci_save {
|
|
#ifndef HACKED_PCI_SAVE
|
|
u16 command;
|
|
u16 cache_lat;
|
|
u16 intr;
|
|
u32 rom_address;
|
|
#else
|
|
u32 config[16];
|
|
#endif
|
|
} *pbook_pci_saves;
|
|
static int pbook_npci_saves;
|
|
|
|
static void
|
|
pbook_alloc_pci_save(void)
|
|
{
|
|
int npci;
|
|
struct pci_dev *pd = NULL;
|
|
|
|
npci = 0;
|
|
while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) {
|
|
++npci;
|
|
}
|
|
if (npci == 0)
|
|
return;
|
|
pbook_pci_saves = (struct pci_save *)
|
|
kmalloc(npci * sizeof(struct pci_save), GFP_KERNEL);
|
|
pbook_npci_saves = npci;
|
|
}
|
|
|
|
static void
|
|
pbook_free_pci_save(void)
|
|
{
|
|
if (pbook_pci_saves == NULL)
|
|
return;
|
|
kfree(pbook_pci_saves);
|
|
pbook_pci_saves = NULL;
|
|
pbook_npci_saves = 0;
|
|
}
|
|
|
|
static void
|
|
pbook_pci_save(void)
|
|
{
|
|
struct pci_save *ps = pbook_pci_saves;
|
|
struct pci_dev *pd = NULL;
|
|
int npci = pbook_npci_saves;
|
|
|
|
if (ps == NULL)
|
|
return;
|
|
|
|
while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) {
|
|
if (npci-- == 0)
|
|
return;
|
|
#ifndef HACKED_PCI_SAVE
|
|
pci_read_config_word(pd, PCI_COMMAND, &ps->command);
|
|
pci_read_config_word(pd, PCI_CACHE_LINE_SIZE, &ps->cache_lat);
|
|
pci_read_config_word(pd, PCI_INTERRUPT_LINE, &ps->intr);
|
|
pci_read_config_dword(pd, PCI_ROM_ADDRESS, &ps->rom_address);
|
|
#else
|
|
int i;
|
|
for (i=1;i<16;i++)
|
|
pci_read_config_dword(pd, i<<4, &ps->config[i]);
|
|
#endif
|
|
++ps;
|
|
}
|
|
}
|
|
|
|
/* For this to work, we must take care of a few things: If gmac was enabled
|
|
* during boot, it will be in the pci dev list. If it's disabled at this point
|
|
* (and it will probably be), then you can't access it's config space.
|
|
*/
|
|
static void
|
|
pbook_pci_restore(void)
|
|
{
|
|
u16 cmd;
|
|
struct pci_save *ps = pbook_pci_saves - 1;
|
|
struct pci_dev *pd = NULL;
|
|
int npci = pbook_npci_saves;
|
|
int j;
|
|
|
|
while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) {
|
|
#ifdef HACKED_PCI_SAVE
|
|
int i;
|
|
if (npci-- == 0)
|
|
return;
|
|
ps++;
|
|
for (i=2;i<16;i++)
|
|
pci_write_config_dword(pd, i<<4, ps->config[i]);
|
|
pci_write_config_dword(pd, 4, ps->config[1]);
|
|
#else
|
|
if (npci-- == 0)
|
|
return;
|
|
ps++;
|
|
if (ps->command == 0)
|
|
continue;
|
|
pci_read_config_word(pd, PCI_COMMAND, &cmd);
|
|
if ((ps->command & ~cmd) == 0)
|
|
continue;
|
|
switch (pd->hdr_type) {
|
|
case PCI_HEADER_TYPE_NORMAL:
|
|
for (j = 0; j < 6; ++j)
|
|
pci_write_config_dword(pd,
|
|
PCI_BASE_ADDRESS_0 + j*4,
|
|
pd->resource[j].start);
|
|
pci_write_config_dword(pd, PCI_ROM_ADDRESS,
|
|
ps->rom_address);
|
|
pci_write_config_word(pd, PCI_CACHE_LINE_SIZE,
|
|
ps->cache_lat);
|
|
pci_write_config_word(pd, PCI_INTERRUPT_LINE,
|
|
ps->intr);
|
|
pci_write_config_word(pd, PCI_COMMAND, ps->command);
|
|
break;
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG_SLEEP
|
|
/* 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
|
|
|
|
/*
|
|
* Put the powerbook to sleep.
|
|
*/
|
|
|
|
static u32 save_via[8];
|
|
|
|
static void
|
|
save_via_state(void)
|
|
{
|
|
save_via[0] = in_8(&via[ANH]);
|
|
save_via[1] = in_8(&via[DIRA]);
|
|
save_via[2] = in_8(&via[B]);
|
|
save_via[3] = in_8(&via[DIRB]);
|
|
save_via[4] = in_8(&via[PCR]);
|
|
save_via[5] = in_8(&via[ACR]);
|
|
save_via[6] = in_8(&via[T1CL]);
|
|
save_via[7] = in_8(&via[T1CH]);
|
|
}
|
|
static void
|
|
restore_via_state(void)
|
|
{
|
|
out_8(&via[ANH], save_via[0]);
|
|
out_8(&via[DIRA], save_via[1]);
|
|
out_8(&via[B], save_via[2]);
|
|
out_8(&via[DIRB], save_via[3]);
|
|
out_8(&via[PCR], save_via[4]);
|
|
out_8(&via[ACR], save_via[5]);
|
|
out_8(&via[T1CL], save_via[6]);
|
|
out_8(&via[T1CH], save_via[7]);
|
|
out_8(&via[IER], IER_CLR | 0x7f); /* disable all intrs */
|
|
out_8(&via[IFR], 0x7f); /* clear IFR */
|
|
out_8(&via[IER], IER_SET | SR_INT | CB1_INT);
|
|
}
|
|
|
|
static int
|
|
pmac_suspend_devices(void)
|
|
{
|
|
int ret;
|
|
|
|
pm_prepare_console();
|
|
|
|
/* Notify old-style device drivers & userland */
|
|
ret = broadcast_sleep(PBOOK_SLEEP_REQUEST, PBOOK_SLEEP_REJECT);
|
|
if (ret != PBOOK_SLEEP_OK) {
|
|
printk(KERN_ERR "Sleep rejected by drivers\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
/* Sync the disks. */
|
|
/* XXX It would be nice to have some way to ensure that
|
|
* nobody is dirtying any new buffers while we wait. That
|
|
* could be achieved using the refrigerator for processes
|
|
* that swsusp uses
|
|
*/
|
|
sys_sync();
|
|
|
|
/* Sleep can fail now. May not be very robust but useful for debugging */
|
|
ret = broadcast_sleep(PBOOK_SLEEP_NOW, PBOOK_WAKE);
|
|
if (ret != PBOOK_SLEEP_OK) {
|
|
printk(KERN_ERR "Driver sleep failed\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
/* Send suspend call to devices, hold the device core's dpm_sem */
|
|
ret = device_suspend(PMSG_SUSPEND);
|
|
if (ret) {
|
|
broadcast_wake();
|
|
printk(KERN_ERR "Driver sleep failed\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
/* Stop preemption */
|
|
preempt_disable();
|
|
|
|
/* Make sure the decrementer won't interrupt us */
|
|
asm volatile("mtdec %0" : : "r" (0x7fffffff));
|
|
/* Make sure any pending DEC interrupt occurring while we did
|
|
* the above didn't re-enable the DEC */
|
|
mb();
|
|
asm volatile("mtdec %0" : : "r" (0x7fffffff));
|
|
|
|
/* We can now disable MSR_EE. This code of course works properly only
|
|
* on UP machines... For SMP, if we ever implement sleep, we'll have to
|
|
* stop the "other" CPUs way before we do all that stuff.
|
|
*/
|
|
local_irq_disable();
|
|
|
|
/* Broadcast power down irq
|
|
* This isn't that useful in most cases (only directly wired devices can
|
|
* use this but still... This will take care of sysdev's as well, so
|
|
* we exit from here with local irqs disabled and PIC off.
|
|
*/
|
|
ret = device_power_down(PMSG_SUSPEND);
|
|
if (ret) {
|
|
wakeup_decrementer();
|
|
local_irq_enable();
|
|
preempt_enable();
|
|
device_resume();
|
|
broadcast_wake();
|
|
printk(KERN_ERR "Driver powerdown failed\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
/* Wait for completion of async backlight requests */
|
|
while (!bright_req_1.complete || !bright_req_2.complete ||
|
|
!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 */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
pmac_wakeup_devices(void)
|
|
{
|
|
mdelay(100);
|
|
|
|
/* Power back up system devices (including the PIC) */
|
|
device_power_up();
|
|
|
|
/* Force a poll of ADB interrupts */
|
|
adb_int_pending = 1;
|
|
via_pmu_interrupt(0, NULL, NULL);
|
|
|
|
/* Restart jiffies & scheduling */
|
|
wakeup_decrementer();
|
|
|
|
/* Re-enable local CPU interrupts */
|
|
local_irq_enable();
|
|
mdelay(10);
|
|
preempt_enable();
|
|
|
|
/* Resume devices */
|
|
device_resume();
|
|
|
|
/* Notify old style drivers */
|
|
broadcast_wake();
|
|
|
|
pm_restore_console();
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define GRACKLE_PM (1<<7)
|
|
#define GRACKLE_DOZE (1<<5)
|
|
#define GRACKLE_NAP (1<<4)
|
|
#define GRACKLE_SLEEP (1<<3)
|
|
|
|
int
|
|
powerbook_sleep_grackle(void)
|
|
{
|
|
unsigned long save_l2cr;
|
|
unsigned short pmcr1;
|
|
struct adb_request req;
|
|
int ret;
|
|
struct pci_dev *grackle;
|
|
|
|
grackle = pci_find_slot(0, 0);
|
|
if (!grackle)
|
|
return -ENODEV;
|
|
|
|
ret = pmac_suspend_devices();
|
|
if (ret) {
|
|
printk(KERN_ERR "Sleep rejected by devices\n");
|
|
return ret;
|
|
}
|
|
|
|
/* 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);
|
|
|
|
/* 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 */
|
|
set_context(current->active_mm->context, current->active_mm->pgd);
|
|
|
|
/* 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);
|
|
|
|
pmac_wakeup_devices();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
powerbook_sleep_Core99(void)
|
|
{
|
|
unsigned long save_l2cr;
|
|
unsigned long save_l3cr;
|
|
struct adb_request req;
|
|
int ret;
|
|
|
|
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;
|
|
|
|
ret = pmac_suspend_devices();
|
|
if (ret) {
|
|
printk(KERN_ERR "Sleep rejected by devices\n");
|
|
return ret;
|
|
}
|
|
|
|
/* 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 */
|
|
set_context(current->active_mm->context, current->active_mm->pgd);
|
|
|
|
/* 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;
|
|
|
|
pmac_wakeup_devices();
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define PB3400_MEM_CTRL 0xf8000000
|
|
#define PB3400_MEM_CTRL_SLEEP 0x70
|
|
|
|
static int
|
|
powerbook_sleep_3400(void)
|
|
{
|
|
int ret, i, x;
|
|
unsigned int hid0;
|
|
unsigned long p;
|
|
struct adb_request sleep_req;
|
|
void __iomem *mem_ctrl;
|
|
unsigned int __iomem *mem_ctrl_sleep;
|
|
|
|
/* first map in the memory controller registers */
|
|
mem_ctrl = ioremap(PB3400_MEM_CTRL, 0x100);
|
|
if (mem_ctrl == NULL) {
|
|
printk("powerbook_sleep_3400: ioremap failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
mem_ctrl_sleep = mem_ctrl + PB3400_MEM_CTRL_SLEEP;
|
|
|
|
/* Allocate room for PCI save */
|
|
pbook_alloc_pci_save();
|
|
|
|
ret = pmac_suspend_devices();
|
|
if (ret) {
|
|
pbook_free_pci_save();
|
|
printk(KERN_ERR "Sleep rejected by devices\n");
|
|
return ret;
|
|
}
|
|
|
|
/* Save the state of PCI config space for some slots */
|
|
pbook_pci_save();
|
|
|
|
/* 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');
|
|
while (!sleep_req.complete)
|
|
mb();
|
|
|
|
pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,1);
|
|
|
|
/* displacement-flush the L2 cache - necessary? */
|
|
for (p = KERNELBASE; p < KERNELBASE + 0x100000; p += 0x1000)
|
|
i = *(volatile int *)p;
|
|
asleep = 1;
|
|
|
|
/* Put the CPU into sleep mode */
|
|
hid0 = mfspr(SPRN_HID0);
|
|
hid0 = (hid0 & ~(HID0_NAP | HID0_DOZE)) | HID0_SLEEP;
|
|
mtspr(SPRN_HID0, hid0);
|
|
mtmsr(mfmsr() | MSR_POW | MSR_EE);
|
|
udelay(10);
|
|
|
|
/* OK, we're awake again, start restoring things */
|
|
out_be32(mem_ctrl_sleep, 0x3f);
|
|
pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,0);
|
|
pbook_pci_restore();
|
|
pmu_unlock();
|
|
|
|
/* wait for the PMU interrupt sequence to complete */
|
|
while (asleep)
|
|
mb();
|
|
|
|
pmac_wakeup_devices();
|
|
pbook_free_pci_save();
|
|
iounmap(mem_ctrl);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_PM && 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 /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
|
|
};
|
|
|
|
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 == 0)
|
|
return -ENOMEM;
|
|
pp->rb_get = pp->rb_put = 0;
|
|
spin_lock_init(&pp->lock);
|
|
init_waitqueue_head(&pp->wait);
|
|
spin_lock_irqsave(&all_pvt_lock, flags);
|
|
#if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
|
|
pp->backlight_locker = 0;
|
|
#endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
|
|
list_add(&pp->list, &all_pmu_pvt);
|
|
spin_unlock_irqrestore(&all_pvt_lock, flags);
|
|
file->private_data = pp;
|
|
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 == 0)
|
|
return -EINVAL;
|
|
if (!access_ok(VERIFY_WRITE, buf, count))
|
|
return -EFAULT;
|
|
|
|
spin_lock_irqsave(&pp->lock, flags);
|
|
add_wait_queue(&pp->wait, &wait);
|
|
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);
|
|
}
|
|
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 unsigned int
|
|
pmu_fpoll(struct file *filp, poll_table *wait)
|
|
{
|
|
struct pmu_private *pp = filp->private_data;
|
|
unsigned int mask = 0;
|
|
unsigned long flags;
|
|
|
|
if (pp == 0)
|
|
return 0;
|
|
poll_wait(filp, &pp->wait, wait);
|
|
spin_lock_irqsave(&pp->lock, flags);
|
|
if (pp->rb_get != pp->rb_put)
|
|
mask |= POLLIN;
|
|
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;
|
|
|
|
lock_kernel();
|
|
if (pp != 0) {
|
|
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) {
|
|
spin_lock_irqsave(&pmu_lock, flags);
|
|
disable_kernel_backlight--;
|
|
spin_unlock_irqrestore(&pmu_lock, flags);
|
|
}
|
|
#endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
|
|
kfree(pp);
|
|
}
|
|
unlock_kernel();
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
pmu_ioctl(struct inode * inode, struct file *filp,
|
|
u_int cmd, u_long arg)
|
|
{
|
|
__u32 __user *argp = (__u32 __user *)arg;
|
|
int error = -EINVAL;
|
|
|
|
switch (cmd) {
|
|
#if defined(CONFIG_PM) && defined(CONFIG_PPC32)
|
|
case PMU_IOC_SLEEP:
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EACCES;
|
|
if (sleep_in_progress)
|
|
return -EBUSY;
|
|
sleep_in_progress = 1;
|
|
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:
|
|
error = -ENOSYS;
|
|
}
|
|
sleep_in_progress = 0;
|
|
break;
|
|
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 /* CONFIG_PM && CONFIG_PPC32 */
|
|
|
|
#ifdef CONFIG_PMAC_BACKLIGHT
|
|
/* Backlight should have its own device or go via
|
|
* the fbdev
|
|
*/
|
|
case PMU_IOC_GET_BACKLIGHT:
|
|
if (sleep_in_progress)
|
|
return -EBUSY;
|
|
error = get_backlight_level();
|
|
if (error < 0)
|
|
return error;
|
|
return put_user(error, argp);
|
|
case PMU_IOC_SET_BACKLIGHT:
|
|
{
|
|
__u32 value;
|
|
if (sleep_in_progress)
|
|
return -EBUSY;
|
|
error = get_user(value, argp);
|
|
if (!error)
|
|
error = set_backlight_level(value);
|
|
break;
|
|
}
|
|
#ifdef CONFIG_INPUT_ADBHID
|
|
case PMU_IOC_GRAB_BACKLIGHT: {
|
|
struct pmu_private *pp = filp->private_data;
|
|
unsigned long flags;
|
|
|
|
if (pp->backlight_locker)
|
|
return 0;
|
|
pp->backlight_locker = 1;
|
|
spin_lock_irqsave(&pmu_lock, flags);
|
|
disable_kernel_backlight++;
|
|
spin_unlock_irqrestore(&pmu_lock, flags);
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_INPUT_ADBHID */
|
|
#endif /* CONFIG_PMAC_BACKLIGHT */
|
|
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 struct file_operations pmu_device_fops = {
|
|
.read = pmu_read,
|
|
.write = pmu_write,
|
|
.poll = pmu_fpoll,
|
|
.ioctl = pmu_ioctl,
|
|
.open = pmu_open,
|
|
.release = pmu_release,
|
|
};
|
|
|
|
static struct miscdevice pmu_device = {
|
|
PMU_MINOR, "pmu", &pmu_device_fops
|
|
};
|
|
|
|
static int pmu_device_init(void)
|
|
{
|
|
if (!via)
|
|
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(volatile unsigned char __iomem *via)
|
|
{
|
|
via[B] &= ~TREQ; eieio();
|
|
while ((via[B] & TACK) != 0)
|
|
;
|
|
via[B] |= TREQ; eieio();
|
|
while ((via[B] & TACK) == 0)
|
|
;
|
|
}
|
|
|
|
static inline void
|
|
polled_send_byte(volatile unsigned char __iomem *via, int x)
|
|
{
|
|
via[ACR] |= SR_OUT | SR_EXT; eieio();
|
|
via[SR] = x; eieio();
|
|
polled_handshake(via);
|
|
}
|
|
|
|
static inline int
|
|
polled_recv_byte(volatile unsigned char __iomem *via)
|
|
{
|
|
int x;
|
|
|
|
via[ACR] = (via[ACR] & ~SR_OUT) | SR_EXT; eieio();
|
|
x = via[SR]; eieio();
|
|
polled_handshake(via);
|
|
x = via[SR]; eieio();
|
|
return x;
|
|
}
|
|
|
|
int
|
|
pmu_polled_request(struct adb_request *req)
|
|
{
|
|
unsigned long flags;
|
|
int i, l, c;
|
|
volatile unsigned char __iomem *v = via;
|
|
|
|
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 ((via[B] & TACK) == 0)
|
|
;
|
|
polled_send_byte(v, c);
|
|
if (l < 0) {
|
|
l = req->nbytes - 1;
|
|
polled_send_byte(v, l);
|
|
}
|
|
for (i = 1; i <= l; ++i)
|
|
polled_send_byte(v, req->data[i]);
|
|
|
|
l = pmu_data_len[c][1];
|
|
if (l < 0)
|
|
l = polled_recv_byte(v);
|
|
for (i = 0; i < l; ++i)
|
|
req->reply[i + req->reply_len] = polled_recv_byte(v);
|
|
|
|
if (req->done)
|
|
(*req->done)(req);
|
|
|
|
local_irq_restore(flags);
|
|
return 0;
|
|
}
|
|
#endif /* DEBUG_SLEEP */
|
|
|
|
|
|
/* FIXME: This is a temporary set of callbacks to enable us
|
|
* to do suspend-to-disk.
|
|
*/
|
|
|
|
#if defined(CONFIG_PM) && defined(CONFIG_PPC32)
|
|
|
|
static int pmu_sys_suspended = 0;
|
|
|
|
static int pmu_sys_suspend(struct sys_device *sysdev, pm_message_t state)
|
|
{
|
|
if (state.event != PM_EVENT_SUSPEND || pmu_sys_suspended)
|
|
return 0;
|
|
|
|
/* Suspend PMU event interrupts */
|
|
pmu_suspend();
|
|
|
|
pmu_sys_suspended = 1;
|
|
return 0;
|
|
}
|
|
|
|
static int pmu_sys_resume(struct sys_device *sysdev)
|
|
{
|
|
struct adb_request req;
|
|
|
|
if (!pmu_sys_suspended)
|
|
return 0;
|
|
|
|
/* Tell PMU we are ready */
|
|
pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2);
|
|
pmu_wait_complete(&req);
|
|
|
|
/* Resume PMU event interrupts */
|
|
pmu_resume();
|
|
|
|
pmu_sys_suspended = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_PM && CONFIG_PPC32 */
|
|
|
|
static struct sysdev_class pmu_sysclass = {
|
|
set_kset_name("pmu"),
|
|
};
|
|
|
|
static struct sys_device device_pmu = {
|
|
.id = 0,
|
|
.cls = &pmu_sysclass,
|
|
};
|
|
|
|
static struct sysdev_driver driver_pmu = {
|
|
#if defined(CONFIG_PM) && defined(CONFIG_PPC32)
|
|
.suspend = &pmu_sys_suspend,
|
|
.resume = &pmu_sys_resume,
|
|
#endif /* CONFIG_PM && CONFIG_PPC32 */
|
|
};
|
|
|
|
static int __init init_pmu_sysfs(void)
|
|
{
|
|
int rc;
|
|
|
|
rc = sysdev_class_register(&pmu_sysclass);
|
|
if (rc) {
|
|
printk(KERN_ERR "Failed registering PMU sys class\n");
|
|
return -ENODEV;
|
|
}
|
|
rc = sysdev_register(&device_pmu);
|
|
if (rc) {
|
|
printk(KERN_ERR "Failed registering PMU sys device\n");
|
|
return -ENODEV;
|
|
}
|
|
rc = sysdev_driver_register(&pmu_sysclass, &driver_pmu);
|
|
if (rc) {
|
|
printk(KERN_ERR "Failed registering PMU sys driver\n");
|
|
return -ENODEV;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
subsys_initcall(init_pmu_sysfs);
|
|
|
|
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_PM) && defined(CONFIG_PPC32)
|
|
EXPORT_SYMBOL(pmu_enable_irled);
|
|
EXPORT_SYMBOL(pmu_battery_count);
|
|
EXPORT_SYMBOL(pmu_batteries);
|
|
EXPORT_SYMBOL(pmu_power_flags);
|
|
#endif /* CONFIG_PM && CONFIG_PPC32 */
|
|
|