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via-pmu.c
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/*
* Device driver for the via-pmu on Apple Powermacs.
*
* The VIA (versatile interface adapter) interfaces to the PMU,
* a 6805 microprocessor core whose primary function is to control
* battery charging and system power on the PowerBook 3400 and 2400.
* The PMU also controls the ADB (Apple Desktop Bus) which connects
* to the keyboard and mouse, as well as the non-volatile RAM
* and the RTC (real time clock) chip.
*
* Copyright (C) 1998 Paul Mackerras and Fabio Riccardi.
* Copyright (C) 2001-2002 Benjamin Herrenschmidt
* Copyright (C) 2006-2007 Johannes Berg
*
* THIS DRIVER IS BECOMING A TOTAL MESS !
* - Cleanup atomically disabling reply to PMU events after
* a sleep or a freq. switch
*
*/
#include <stdarg.h>
#include <linux/mutex.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/miscdevice.h>
#include <linux/blkdev.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/poll.h>
#include <linux/adb.h>
#include <linux/pmu.h>
#include <linux/cuda.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/pm.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/device.h>
#include <linux/syscore_ops.h>
#include <linux/freezer.h>
#include <linux/syscalls.h>
#include <linux/suspend.h>
#include <linux/cpu.h>
#include <linux/compat.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <asm/prom.h>
#include <asm/machdep.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/sections.h>
#include <asm/irq.h>
#include <asm/pmac_feature.h>
#include <asm/pmac_pfunc.h>
#include <asm/pmac_low_i2c.h>
#include <asm/uaccess.h>
#include <asm/mmu_context.h>
#include <asm/cputable.h>
#include <asm/time.h>
#include <asm/backlight.h>
#include "via-pmu-event.h"
/* Some compile options */
#undef DEBUG_SLEEP
/* Misc minor number allocated for /dev/pmu */
#define PMU_MINOR 154
/* How many iterations between battery polls */
#define BATTERY_POLLING_COUNT 2
static DEFINE_MUTEX(pmu_info_proc_mutex);
static volatile unsigned char __iomem *via;
/* VIA registers - spaced 0x200 bytes apart */
#define RS 0x200 /* skip between registers */
#define B 0 /* B-side data */
#define A RS /* A-side data */
#define DIRB (2*RS) /* B-side direction (1=output) */
#define DIRA (3*RS) /* A-side direction (1=output) */
#define T1CL (4*RS) /* Timer 1 ctr/latch (low 8 bits) */
#define T1CH (5*RS) /* Timer 1 counter (high 8 bits) */
#define T1LL (6*RS) /* Timer 1 latch (low 8 bits) */
#define T1LH (7*RS) /* Timer 1 latch (high 8 bits) */
#define T2CL (8*RS) /* Timer 2 ctr/latch (low 8 bits) */
#define T2CH (9*RS) /* Timer 2 counter (high 8 bits) */
#define SR (10*RS) /* Shift register */
#define ACR (11*RS) /* Auxiliary control register */
#define PCR (12*RS) /* Peripheral control register */
#define IFR (13*RS) /* Interrupt flag register */
#define IER (14*RS) /* Interrupt enable register */
#define ANH (15*RS) /* A-side data, no handshake */
/* Bits in B data register: both active low */
#define TACK 0x08 /* Transfer acknowledge (input) */
#define TREQ 0x10 /* Transfer request (output) */
/* Bits in ACR */
#define SR_CTRL 0x1c /* Shift register control bits */
#define SR_EXT 0x0c /* Shift on external clock */
#define SR_OUT 0x10 /* Shift out if 1 */
/* Bits in IFR and IER */
#define IER_SET 0x80 /* set bits in IER */
#define IER_CLR 0 /* clear bits in IER */
#define SR_INT 0x04 /* Shift register full/empty */
#define CB2_INT 0x08
#define CB1_INT 0x10 /* transition on CB1 input */
static volatile enum pmu_state {
idle,
sending,
intack,
reading,
reading_intr,
locked,
} pmu_state;
static volatile enum int_data_state {
int_data_empty,
int_data_fill,
int_data_ready,
int_data_flush
} int_data_state[2] = { int_data_empty, int_data_empty };
static struct adb_request *current_req;
static struct adb_request *last_req;
static struct adb_request *req_awaiting_reply;
static unsigned char interrupt_data[2][32];
static int interrupt_data_len[2];
static int int_data_last;
static unsigned char *reply_ptr;
static int data_index;
static int data_len;
static volatile int adb_int_pending;
static volatile int disable_poll;
static struct device_node *vias;
static int pmu_kind = PMU_UNKNOWN;
static int pmu_fully_inited;
static int pmu_has_adb;
static struct device_node *gpio_node;
static unsigned char __iomem *gpio_reg;
static int gpio_irq = NO_IRQ;
static int gpio_irq_enabled = -1;
static volatile int pmu_suspended;
static spinlock_t pmu_lock;
static u8 pmu_intr_mask;
static int pmu_version;
static int drop_interrupts;
#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
static int option_lid_wakeup = 1;
#endif /* CONFIG_SUSPEND && CONFIG_PPC32 */
static unsigned long async_req_locks;
static unsigned int pmu_irq_stats[11];
static struct proc_dir_entry *proc_pmu_root;
static struct proc_dir_entry *proc_pmu_info;
static struct proc_dir_entry *proc_pmu_irqstats;
static struct proc_dir_entry *proc_pmu_options;
static int option_server_mode;
int pmu_battery_count;
int pmu_cur_battery;
unsigned int pmu_power_flags = PMU_PWR_AC_PRESENT;
struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES];
static int query_batt_timer = BATTERY_POLLING_COUNT;
static struct adb_request batt_req;
static struct proc_dir_entry *proc_pmu_batt[PMU_MAX_BATTERIES];
int __fake_sleep;
int asleep;
#ifdef CONFIG_ADB
static int adb_dev_map;
static int pmu_adb_flags;
static int pmu_probe(void);
static int pmu_init(void);
static int pmu_send_request(struct adb_request *req, int sync);
static int pmu_adb_autopoll(int devs);
static int pmu_adb_reset_bus(void);
#endif /* CONFIG_ADB */
static int init_pmu(void);
static void pmu_start(void);
static irqreturn_t via_pmu_interrupt(int irq, void *arg);
static irqreturn_t gpio1_interrupt(int irq, void *arg);
static const struct file_operations pmu_info_proc_fops;
static const struct file_operations pmu_irqstats_proc_fops;
static void pmu_pass_intr(unsigned char *data, int len);
static const struct file_operations pmu_battery_proc_fops;
static const struct file_operations pmu_options_proc_fops;
#ifdef CONFIG_ADB
struct adb_driver via_pmu_driver = {
"PMU",
pmu_probe,
pmu_init,
pmu_send_request,
pmu_adb_autopoll,
pmu_poll_adb,
pmu_adb_reset_bus
};
#endif /* CONFIG_ADB */
extern void low_sleep_handler(void);
extern void enable_kernel_altivec(void);
extern void enable_kernel_fp(void);
#ifdef DEBUG_SLEEP
int pmu_polled_request(struct adb_request *req);
void pmu_blink(int n);
#endif
/*
* This table indicates for each PMU opcode:
* - the number of data bytes to be sent with the command, or -1
* if a length byte should be sent,
* - the number of response bytes which the PMU will return, or
* -1 if it will send a length byte.
*/
static const s8 pmu_data_len[256][2] = {
/* 0 1 2 3 4 5 6 7 */
/*00*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
/*08*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
/*10*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
/*18*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0, 0},
/*20*/ {-1, 0},{ 0, 0},{ 2, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},
/*28*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0,-1},
/*30*/ { 4, 0},{20, 0},{-1, 0},{ 3, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
/*38*/ { 0, 4},{ 0,20},{ 2,-1},{ 2, 1},{ 3,-1},{-1,-1},{-1,-1},{ 4, 0},
/*40*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
/*48*/ { 0, 1},{ 0, 1},{-1,-1},{ 1, 0},{ 1, 0},{-1,-1},{-1,-1},{-1,-1},
/*50*/ { 1, 0},{ 0, 0},{ 2, 0},{ 2, 0},{-1, 0},{ 1, 0},{ 3, 0},{ 1, 0},
/*58*/ { 0, 1},{ 1, 0},{ 0, 2},{ 0, 2},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},
/*60*/ { 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
/*68*/ { 0, 3},{ 0, 3},{ 0, 2},{ 0, 8},{ 0,-1},{ 0,-1},{-1,-1},{-1,-1},
/*70*/ { 1, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
/*78*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{ 5, 1},{ 4, 1},{ 4, 1},
/*80*/ { 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
/*88*/ { 0, 5},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
/*90*/ { 1, 0},{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
/*98*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
/*a0*/ { 2, 0},{ 2, 0},{ 2, 0},{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},
/*a8*/ { 1, 1},{ 1, 0},{ 3, 0},{ 2, 0},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
/*b0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
/*b8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
/*c0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
/*c8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
/*d0*/ { 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
/*d8*/ { 1, 1},{ 1, 1},{-1,-1},{-1,-1},{ 0, 1},{ 0,-1},{-1,-1},{-1,-1},
/*e0*/ {-1, 0},{ 4, 0},{ 0, 1},{-1, 0},{-1, 0},{ 4, 0},{-1, 0},{-1, 0},
/*e8*/ { 3,-1},{-1,-1},{ 0, 1},{-1,-1},{ 0,-1},{-1,-1},{-1,-1},{ 0, 0},
/*f0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
/*f8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
};
static char *pbook_type[] = {
"Unknown PowerBook",
"PowerBook 2400/3400/3500(G3)",
"PowerBook G3 Series",
"1999 PowerBook G3",
"Core99"
};
int __init find_via_pmu(void)
{
u64 taddr;
const u32 *reg;
if (via != 0)
return 1;
vias = of_find_node_by_name(NULL, "via-pmu");
if (vias == NULL)
return 0;
reg = of_get_property(vias, "reg", NULL);
if (reg == NULL) {
printk(KERN_ERR "via-pmu: No \"reg\" property !\n");
goto fail;
}
taddr = of_translate_address(vias, reg);
if (taddr == OF_BAD_ADDR) {
printk(KERN_ERR "via-pmu: Can't translate address !\n");
goto fail;
}
spin_lock_init(&pmu_lock);
pmu_has_adb = 1;
pmu_intr_mask = PMU_INT_PCEJECT |
PMU_INT_SNDBRT |
PMU_INT_ADB |
PMU_INT_TICK;
if (vias->parent->name && ((strcmp(vias->parent->name, "ohare") == 0)
|| of_device_is_compatible(vias->parent, "ohare")))
pmu_kind = PMU_OHARE_BASED;
else if (of_device_is_compatible(vias->parent, "paddington"))
pmu_kind = PMU_PADDINGTON_BASED;
else if (of_device_is_compatible(vias->parent, "heathrow"))
pmu_kind = PMU_HEATHROW_BASED;
else if (of_device_is_compatible(vias->parent, "Keylargo")
|| of_device_is_compatible(vias->parent, "K2-Keylargo")) {
struct device_node *gpiop;
struct device_node *adbp;
u64 gaddr = OF_BAD_ADDR;
pmu_kind = PMU_KEYLARGO_BASED;
adbp = of_find_node_by_type(NULL, "adb");
pmu_has_adb = (adbp != NULL);
of_node_put(adbp);
pmu_intr_mask = PMU_INT_PCEJECT |
PMU_INT_SNDBRT |
PMU_INT_ADB |
PMU_INT_TICK |
PMU_INT_ENVIRONMENT;
gpiop = of_find_node_by_name(NULL, "gpio");
if (gpiop) {
reg = of_get_property(gpiop, "reg", NULL);
if (reg)
gaddr = of_translate_address(gpiop, reg);
if (gaddr != OF_BAD_ADDR)
gpio_reg = ioremap(gaddr, 0x10);
}
if (gpio_reg == NULL) {
printk(KERN_ERR "via-pmu: Can't find GPIO reg !\n");
goto fail_gpio;
}
} else
pmu_kind = PMU_UNKNOWN;
via = ioremap(taddr, 0x2000);
if (via == NULL) {
printk(KERN_ERR "via-pmu: Can't map address !\n");
goto fail;
}
out_8(&via[IER], IER_CLR | 0x7f); /* disable all intrs */
out_8(&via[IFR], 0x7f); /* clear IFR */
pmu_state = idle;
if (!init_pmu()) {
via = NULL;
return 0;
}
printk(KERN_INFO "PMU driver v%d initialized for %s, firmware: %02x\n",
PMU_DRIVER_VERSION, pbook_type[pmu_kind], pmu_version);
sys_ctrler = SYS_CTRLER_PMU;
return 1;
fail:
of_node_put(vias);
iounmap(gpio_reg);
gpio_reg = NULL;
fail_gpio:
vias = NULL;
return 0;
}
#ifdef CONFIG_ADB
static int pmu_probe(void)
{
return vias == NULL? -ENODEV: 0;
}
static int __init pmu_init(void)
{
if (vias == NULL)
return -ENODEV;
return 0;
}
#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)
{
unsigned int irq;
if (vias == NULL)
return -ENODEV;
batt_req.complete = 1;
irq = irq_of_parse_and_map(vias, 0);
if (irq == NO_IRQ) {
printk(KERN_ERR "via-pmu: can't map interrupt\n");
return -ENODEV;
}
/* We set IRQF_NO_SUSPEND because we don't want the interrupt
* to be disabled between the 2 passes of driver suspend, we
* control our own disabling for that one
*/
if (request_irq(irq, via_pmu_interrupt, IRQF_NO_SUSPEND,
"VIA-PMU", (void *)0)) {
printk(KERN_ERR "via-pmu: can't request irq %d\n", irq);
return -ENODEV;
}
if (pmu_kind == PMU_KEYLARGO_BASED) {
gpio_node = of_find_node_by_name(NULL, "extint-gpio1");
if (gpio_node == NULL)
gpio_node = of_find_node_by_name(NULL,
"pmu-interrupt");
if (gpio_node)
gpio_irq = irq_of_parse_and_map(gpio_node, 0);
if (gpio_irq != NO_IRQ) {
if (request_irq(gpio_irq, gpio1_interrupt, IRQF_TIMER,
"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
/* Initialize backlight */
pmu_backlight_init();
#endif
#ifdef CONFIG_PPC32
if (of_machine_is_compatible("AAPL,3400/2400") ||
of_machine_is_compatible("AAPL,3500")) {
int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO,
NULL, PMAC_MB_INFO_MODEL, 0);
pmu_battery_count = 1;
if (mb == PMAC_TYPE_COMET)
pmu_batteries[0].flags |= PMU_BATT_TYPE_COMET;
else
pmu_batteries[0].flags |= PMU_BATT_TYPE_HOOPER;
} else if (of_machine_is_compatible("AAPL,PowerBook1998") ||
of_machine_is_compatible("PowerBook1,1")) {
pmu_battery_count = 2;
pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART;
pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART;
} else {
struct device_node* prim =
of_find_node_by_name(NULL, "power-mgt");
const u32 *prim_info = NULL;
if (prim)
prim_info = of_get_property(prim, "prim-info", NULL);
if (prim_info) {
/* Other stuffs here yet unknown */
pmu_battery_count = (prim_info[6] >> 16) & 0xff;
pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART;
if (pmu_battery_count > 1)
pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART;
}
of_node_put(prim);
}
#endif /* CONFIG_PPC32 */
/* Create /proc/pmu */
proc_pmu_root = proc_mkdir("pmu", NULL);
if (proc_pmu_root) {
long i;
for (i=0; i<pmu_battery_count; i++) {
char title[16];
sprintf(title, "battery_%ld", i);
proc_pmu_batt[i] = proc_create_data(title, 0, proc_pmu_root,
&pmu_battery_proc_fops, (void *)i);
}
proc_pmu_info = proc_create("info", 0, proc_pmu_root, &pmu_info_proc_fops);
proc_pmu_irqstats = proc_create("interrupts", 0, proc_pmu_root,
&pmu_irqstats_proc_fops);
proc_pmu_options = proc_create("options", 0600, proc_pmu_root,
&pmu_options_proc_fops);
}
return 0;
}
device_initcall(via_pmu_dev_init);
static int
init_pmu(void)
{
int timeout;
struct adb_request req;
/* Negate TREQ. Set TACK to input and TREQ to output. */
out_8(&via[B], in_8(&via[B]) | TREQ);
out_8(&via[DIRB], (in_8(&via[DIRB]) | TREQ) & ~TACK);
pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
timeout = 100000;
while (!req.complete) {
if (--timeout < 0) {
printk(KERN_ERR "init_pmu: no response from PMU\n");
return 0;
}
udelay(10);
pmu_poll();
}
/* ack all pending interrupts */
timeout = 100000;
interrupt_data[0][0] = 1;
while (interrupt_data[0][0] || pmu_state != idle) {
if (--timeout < 0) {
printk(KERN_ERR "init_pmu: timed out acking intrs\n");
return 0;
}
if (pmu_state == idle)
adb_int_pending = 1;
via_pmu_interrupt(0, NULL);
udelay(10);
}
/* Tell PMU we are ready. */
if (pmu_kind == PMU_KEYLARGO_BASED) {
pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2);
while (!req.complete)
pmu_poll();
}
/* Read PMU version */
pmu_request(&req, NULL, 1, PMU_GET_VERSION);
pmu_wait_complete(&req);
if (req.reply_len > 0)
pmu_version = req.reply[0];
/* Read server mode setting */
if (pmu_kind == PMU_KEYLARGO_BASED) {
pmu_request(&req, NULL, 2, PMU_POWER_EVENTS,
PMU_PWR_GET_POWERUP_EVENTS);
pmu_wait_complete(&req);
if (req.reply_len == 2) {
if (req.reply[1] & PMU_PWR_WAKEUP_AC_INSERT)
option_server_mode = 1;
printk(KERN_INFO "via-pmu: Server Mode is %s\n",
option_server_mode ? "enabled" : "disabled");
}
}
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:
pr_warn("pmu.c: unrecognized battery info, "
"len: %d, %4ph\n", req->reply_len,
req->reply);
break;
}
}
if ((req->reply[1] & 0x01) && (amperage > 0))
bat_flags |= PMU_BATT_CHARGING;
pmu_batteries[pmu_cur_battery].flags = bat_flags;
pmu_batteries[pmu_cur_battery].charge = capa;
pmu_batteries[pmu_cur_battery].max_charge = max;
pmu_batteries[pmu_cur_battery].amperage = amperage;
pmu_batteries[pmu_cur_battery].voltage = voltage;
if (amperage) {
if ((req->reply[1] & 0x01) && (amperage > 0))
pmu_batteries[pmu_cur_battery].time_remaining
= ((max-capa) * 3600) / amperage;
else
pmu_batteries[pmu_cur_battery].time_remaining
= (capa * 3600) / (-amperage);
} else
pmu_batteries[pmu_cur_battery].time_remaining = 0;
pmu_cur_battery = (pmu_cur_battery + 1) % pmu_battery_count;
clear_bit(0, &async_req_locks);
}
static void
query_battery_state(void)
{
if (test_and_set_bit(0, &async_req_locks))
return;
if (pmu_kind == PMU_OHARE_BASED)
pmu_request(&batt_req, done_battery_state_ohare,
1, PMU_BATTERY_STATE);
else
pmu_request(&batt_req, done_battery_state_smart,
2, PMU_SMART_BATTERY_STATE, pmu_cur_battery+1);
}
static int pmu_info_proc_show(struct seq_file *m, void *v)
{
seq_printf(m, "PMU driver version : %d\n", PMU_DRIVER_VERSION);
seq_printf(m, "PMU firmware version : %02x\n", pmu_version);
seq_printf(m, "AC Power : %d\n",
((pmu_power_flags & PMU_PWR_AC_PRESENT) != 0) || pmu_battery_count == 0);
seq_printf(m, "Battery count : %d\n", pmu_battery_count);
return 0;
}
static int pmu_info_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, pmu_info_proc_show, NULL);
}
static const struct file_operations pmu_info_proc_fops = {
.owner = THIS_MODULE,
.open = pmu_info_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int pmu_irqstats_proc_show(struct seq_file *m, void *v)
{
int i;
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++) {
seq_printf(m, " %2u: %10u (%s)\n",
i, pmu_irq_stats[i], irq_names[i]);
}
return 0;
}
static int pmu_irqstats_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, pmu_irqstats_proc_show, NULL);
}
static const struct file_operations pmu_irqstats_proc_fops = {
.owner = THIS_MODULE,
.open = pmu_irqstats_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int pmu_battery_proc_show(struct seq_file *m, void *v)
{
long batnum = (long)m->private;
seq_putc(m, '\n');
seq_printf(m, "flags : %08x\n", pmu_batteries[batnum].flags);
seq_printf(m, "charge : %d\n", pmu_batteries[batnum].charge);
seq_printf(m, "max_charge : %d\n", pmu_batteries[batnum].max_charge);
seq_printf(m, "current : %d\n", pmu_batteries[batnum].amperage);
seq_printf(m, "voltage : %d\n", pmu_batteries[batnum].voltage);
seq_printf(m, "time rem. : %d\n", pmu_batteries[batnum].time_remaining);
return 0;
}
static int pmu_battery_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, pmu_battery_proc_show, PDE_DATA(inode));
}
static const struct file_operations pmu_battery_proc_fops = {
.owner = THIS_MODULE,
.open = pmu_battery_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int pmu_options_proc_show(struct seq_file *m, void *v)
{
#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
if (pmu_kind == PMU_KEYLARGO_BASED &&
pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0)
seq_printf(m, "lid_wakeup=%d\n", option_lid_wakeup);
#endif
if (pmu_kind == PMU_KEYLARGO_BASED)
seq_printf(m, "server_mode=%d\n", option_server_mode);
return 0;
}
static int pmu_options_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, pmu_options_proc_show, NULL);
}
static ssize_t pmu_options_proc_write(struct file *file,
const char __user *buffer, size_t count, loff_t *pos)
{
char tmp[33];
char *label, *val;
size_t fcount = count;
if (!count)
return -EINVAL;
if (count > 32)
count = 32;
if (copy_from_user(tmp, buffer, count))
return -EFAULT;
tmp[count] = 0;
label = tmp;
while(*label == ' ')
label++;
val = label;
while(*val && (*val != '=')) {
if (*val == ' ')
*val = 0;
val++;
}
if ((*val) == 0)
return -EINVAL;
*(val++) = 0;
while(*val == ' ')
val++;
#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
if (pmu_kind == PMU_KEYLARGO_BASED &&
pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0)
if (!strcmp(label, "lid_wakeup"))
option_lid_wakeup = ((*val) == '1');
#endif
if (pmu_kind == PMU_KEYLARGO_BASED && !strcmp(label, "server_mode")) {
int new_value;
new_value = ((*val) == '1');
if (new_value != option_server_mode)
pmu_set_server_mode(new_value);
}
return fcount;
}
static const struct file_operations pmu_options_proc_fops = {
.owner = THIS_MODULE,
.open = pmu_options_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = pmu_options_proc_write,
};
#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;