| /* |
| * 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 |
| * |
| * THIS DRIVER IS BECOMING A TOTAL MESS ! |
| * - Cleanup atomically disabling reply to PMU events after |
| * a sleep or a freq. switch |
| * - Move sleep code out of here to pmac_pm, merge into new |
| * common PM infrastructure |
| * - Move backlight code out as well |
| * - Save/Restore PCI space properly |
| * |
| */ |
| #include <stdarg.h> |
| #include <linux/config.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/smp_lock.h> |
| #include <linux/module.h> |
| #include <linux/spinlock.h> |
| #include <linux/pm.h> |
| #include <linux/proc_fs.h> |
| #include <linux/init.h> |
| #include <linux/interrupt.h> |
| #include <linux/device.h> |
| #include <linux/sysdev.h> |
| #include <linux/suspend.h> |
| #include <linux/syscalls.h> |
| #include <linux/cpu.h> |
| #include <asm/prom.h> |
| #include <asm/machdep.h> |
| #include <asm/io.h> |
| #include <asm/pgtable.h> |
| #include <asm/system.h> |
| #include <asm/sections.h> |
| #include <asm/irq.h> |
| #include <asm/pmac_feature.h> |
| #include <asm/uaccess.h> |
| #include <asm/mmu_context.h> |
| #include <asm/cputable.h> |
| #include <asm/time.h> |
| #ifdef CONFIG_PMAC_BACKLIGHT |
| #include <asm/backlight.h> |
| #endif |
| |
| #ifdef CONFIG_PPC32 |
| #include <asm/open_pic.h> |
| #endif |
| |
| /* Some compile options */ |
| #undef SUSPEND_USES_PMU |
| #define DEBUG_SLEEP |
| #undef HACKED_PCI_SAVE |
| |
| /* Misc minor number allocated for /dev/pmu */ |
| #define PMU_MINOR 154 |
| |
| /* How many iterations between battery polls */ |
| #define BATTERY_POLLING_COUNT 2 |
| |
| 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 adb_request bright_req_1, bright_req_2; |
| static struct device_node *vias; |
| static int pmu_kind = PMU_UNKNOWN; |
| static int pmu_fully_inited = 0; |
| static int pmu_has_adb; |
| static unsigned char __iomem *gpio_reg = NULL; |
| static int gpio_irq = -1; |
| static int gpio_irq_enabled = -1; |
| static volatile int pmu_suspended = 0; |
| static spinlock_t pmu_lock; |
| static u8 pmu_intr_mask; |
| static int pmu_version; |
| static int drop_interrupts; |
| #if defined(CONFIG_PM) && defined(CONFIG_PPC32) |
| static int option_lid_wakeup = 1; |
| static int sleep_in_progress; |
| #endif /* CONFIG_PM && 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; |
| 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]; |
| |
| #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) |
| extern int disable_kernel_backlight; |
| #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */ |
| |
| int __fake_sleep; |
| int asleep; |
| struct notifier_block *sleep_notifier_list; |
| |
| #ifdef CONFIG_ADB |
| static int adb_dev_map = 0; |
| 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 int pmu_queue_request(struct adb_request *req); |
| static void pmu_start(void); |
| static irqreturn_t via_pmu_interrupt(int irq, void *arg, struct pt_regs *regs); |
| static irqreturn_t gpio1_interrupt(int irq, void *arg, struct pt_regs *regs); |
| static int proc_get_info(char *page, char **start, off_t off, |
| int count, int *eof, void *data); |
| static int proc_get_irqstats(char *page, char **start, off_t off, |
| int count, int *eof, void *data); |
| #ifdef CONFIG_PMAC_BACKLIGHT |
| static int pmu_set_backlight_level(int level, void* data); |
| static int pmu_set_backlight_enable(int on, int level, void* data); |
| #endif /* CONFIG_PMAC_BACKLIGHT */ |
| static void pmu_pass_intr(unsigned char *data, int len); |
| static int proc_get_batt(char *page, char **start, off_t off, |
| int count, int *eof, void *data); |
| static int proc_read_options(char *page, char **start, off_t off, |
| int count, int *eof, void *data); |
| static int proc_write_options(struct file *file, const char __user *buffer, |
| unsigned long count, void *data); |
| |
| #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); |
| int pmu_wink(struct adb_request *req); |
| #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" |
| }; |
| |
| #ifdef CONFIG_PMAC_BACKLIGHT |
| static struct backlight_controller pmu_backlight_controller = { |
| pmu_set_backlight_enable, |
| pmu_set_backlight_level |
| }; |
| #endif /* CONFIG_PMAC_BACKLIGHT */ |
| |
| int |
| find_via_pmu(void) |
| { |
| if (via != 0) |
| return 1; |
| vias = find_devices("via-pmu"); |
| if (vias == 0) |
| return 0; |
| if (vias->next != 0) |
| printk(KERN_WARNING "Warning: only using 1st via-pmu\n"); |
| |
| if (vias->n_addrs < 1 || vias->n_intrs < 1) { |
| printk(KERN_ERR "via-pmu: %d addresses, %d interrupts!\n", |
| vias->n_addrs, vias->n_intrs); |
| if (vias->n_addrs < 1 || vias->n_intrs < 1) |
| return 0; |
| } |
| |
| 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) |
| || device_is_compatible(vias->parent, "ohare"))) |
| pmu_kind = PMU_OHARE_BASED; |
| else if (device_is_compatible(vias->parent, "paddington")) |
| pmu_kind = PMU_PADDINGTON_BASED; |
| else if (device_is_compatible(vias->parent, "heathrow")) |
| pmu_kind = PMU_HEATHROW_BASED; |
| else if (device_is_compatible(vias->parent, "Keylargo") |
| || device_is_compatible(vias->parent, "K2-Keylargo")) { |
| struct device_node *gpio, *gpiop; |
| |
| pmu_kind = PMU_KEYLARGO_BASED; |
| pmu_has_adb = (find_type_devices("adb") != NULL); |
| pmu_intr_mask = PMU_INT_PCEJECT | |
| PMU_INT_SNDBRT | |
| PMU_INT_ADB | |
| PMU_INT_TICK | |
| PMU_INT_ENVIRONMENT; |
| |
| gpiop = find_devices("gpio"); |
| if (gpiop && gpiop->n_addrs) { |
| gpio_reg = ioremap(gpiop->addrs->address, 0x10); |
| gpio = find_devices("extint-gpio1"); |
| if (gpio == NULL) |
| gpio = find_devices("pmu-interrupt"); |
| if (gpio && gpio->parent == gpiop && gpio->n_intrs) |
| gpio_irq = gpio->intrs[0].line; |
| } |
| } else |
| pmu_kind = PMU_UNKNOWN; |
| |
| via = ioremap(vias->addrs->address, 0x2000); |
| |
| 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 %d initialized for %s, firmware: %02x\n", |
| PMU_DRIVER_VERSION, pbook_type[pmu_kind], pmu_version); |
| |
| sys_ctrler = SYS_CTRLER_PMU; |
| |
| return 1; |
| } |
| |
| #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) |
| { |
| if (vias == NULL) |
| return -ENODEV; |
| |
| bright_req_1.complete = 1; |
| bright_req_2.complete = 1; |
| batt_req.complete = 1; |
| |
| #if defined(CONFIG_PPC32) && !defined(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_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); |
| 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; |
| |
| #ifndef CONFIG_PPC64 |
| request_OF_resource(vias, 0, NULL); |
| #endif |
| #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 defined(CONFIG_XMON) && !defined(CONFIG_PPC64) |
| if (len == 4 && data[1] == 0x2c) { |
| extern int xmon_wants_key, xmon_adb_keycode; |
| if (xmon_wants_key) { |
| xmon_adb_keycode = data[2]; |
| return; |
| } |
| } |
| #endif /* defined(CONFIG_XMON) && !defined(CONFIG_PPC64) */ |
| #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; |
| } |
| |
| struct pmu_i2c_hdr { |
| u8 bus; |
| u8 mode; |
| u8 bus2; |
| u8 address; |
| u8 sub_addr; |
| u8 comb_addr; |
| u8 count; |
| }; |
| |
| int |
| pmu_i2c_combined_read(int bus, int addr, int subaddr, u8* data, int len) |
| { |
| struct adb_request req; |
| struct pmu_i2c_hdr *hdr = (struct pmu_i2c_hdr *)&req.data[1]; |
| int retry; |
| int rc; |
| |
| for (retry=0; retry<16; retry++) { |
| memset(&req, 0, sizeof(req)); |
| |
| hdr->bus = bus; |
| hdr->address = addr & 0xfe; |
| hdr->mode = PMU_I2C_MODE_COMBINED; |
| hdr->bus2 = 0; |
| hdr->sub_addr = subaddr; |
| hdr->comb_addr = addr | 1; |
| hdr->count = len; |
| |
| req.nbytes = sizeof(struct pmu_i2c_hdr) + 1; |
| req.reply_expected = 0; |
| req.reply_len = 0; |
| req.data[0] = PMU_I2C_CMD; |
| req.reply[0] = 0xff; |
| rc = pmu_queue_request(&req); |
| if (rc) |
| return rc; |
| while(!req.complete) |
| pmu_poll(); |
| if (req.reply[0] == PMU_I2C_STATUS_OK) |
| break; |
| mdelay(15); |
| } |
| if (req.reply[0] != PMU_I2C_STATUS_OK) |
| return -1; |
| |
| for (retry=0; retry<16; retry++) { |
| memset(&req, 0, sizeof(req)); |
| |
| mdelay(15); |
| |
| hdr->bus = PMU_I2C_BUS_STATUS; |
| req.reply[0] = 0xff; |
| |
| req.nbytes = 2; |
| req.reply_expected = 0; |
| req.reply_len = 0; |
| req.data[0] = PMU_I2C_CMD; |
| rc = pmu_queue_request(&req); |
| if (rc) |
| return rc; |
| while(!req.complete) |
| pmu_poll(); |
| if (req.reply[0] == PMU_I2C_STATUS_DATAREAD) { |
| memcpy(data, &req.reply[1], req.reply_len - 1); |
| return req.reply_len - 1; |
| } |
| } |
| return -1; |
| } |
| |
| int |
| pmu_i2c_stdsub_write(int bus, int addr, int subaddr, u8* data, int len) |
| { |
| struct adb_request req; |
| struct pmu_i2c_hdr *hdr = (struct pmu_i2c_hdr *)&req.data[1]; |
| int retry; |
| int rc; |
| |
| for (retry=0; retry<16; retry++) { |
| memset(&req, 0, sizeof(req)); |
| |
| hdr->bus = bus; |
| hdr->address = addr & 0xfe; |
| hdr->mode = PMU_I2C_MODE_STDSUB; |
| hdr->bus2 = 0; |
| hdr->sub_addr = subaddr; |
| hdr->comb_addr = addr & 0xfe; |
| hdr->count = len; |
| |
| req.data[0] = PMU_I2C_CMD; |
| memcpy(&req.data[sizeof(struct pmu_i2c_hdr) + 1], data, len); |
| req.nbytes = sizeof(struct pmu_i2c_hdr) + len + 1; |
| req.reply_expected = 0; |
| req.reply_len = 0; |
| req.reply[0] = 0xff; |
| rc = pmu_queue_request(&req); |
| if (rc) |
| return rc; |
| while(!req.complete) |
| pmu_poll(); |
| if (req.reply[0] == PMU_I2C_STATUS_OK) |
| break; |
| mdelay(15); |
| } |
| if (req.reply[0] != PMU_I2C_STATUS_OK) |
| return -1; |
| |
| for (retry=0; retry<16; retry++) { |
| memset(&req, 0, sizeof(req)); |
| |
| mdelay(15); |
| |
| hdr->bus = PMU_I2C_BUS_STATUS; |
| req.reply[0] = 0xff; |
| |
| req.nbytes = 2; |
| req.reply_expected = 0; |
| req.reply_len = 0; |
| req.data[0] = PMU_I2C_CMD; |
| rc = pmu_queue_request(&req); |
| if (rc) |
| return rc; |
| while(!req.complete) |
| pmu_poll(); |
| if (req.reply[0] == PMU_I2C_STATUS_OK) |
| return len; |
| } |
| return -1; |
| } |
| |
| int |
| pmu_i2c_simple_read(int bus, int addr, u8* data, int len) |
| { |
| struct adb_request req; |
| struct pmu_i2c_hdr *hdr = (struct pmu_i2c_hdr *)&req.data[1]; |
| int retry; |
| int rc; |
| |
| for (retry=0; retry<16; retry++) { |
| memset(&req, 0, sizeof(req)); |
| |
| hdr->bus = bus; |
| hdr->address = addr | 1; |
| hdr->mode = PMU_I2C_MODE_SIMPLE; |
| hdr->bus2 = 0; |
| hdr->sub_addr = 0; |
| hdr->comb_addr = 0; |
| hdr->count = len; |
| |
| req.data[0] = PMU_I2C_CMD; |
| req.nbytes = sizeof(struct pmu_i2c_hdr) + 1; |
| req.reply_expected = 0; |
| req.reply_len = 0; |
| req.reply[0] = 0xff; |
| rc = pmu_queue_request(&req); |
| if (rc) |
| return rc; |
| while(!req.complete) |
| pmu_poll(); |
| if (req.reply[0] == PMU_I2C_STATUS_OK) |
| break; |
| mdelay(15); |
| } |
| if (req.reply[0] != PMU_I2C_STATUS_OK) |
| return -1; |
| |
| for (retry=0; retry<16; retry++) { |
| memset(&req, 0, sizeof(req)); |
| |
| mdelay(15); |
| |
| hdr->bus = PMU_I2C_BUS_STATUS; |
| req.reply[0] = 0xff; |
| |
| req.nbytes = 2; |
| req.reply_expected = 0; |
| req.reply_len = 0; |
| req.data[0] = PMU_I2C_CMD; |
| rc = pmu_queue_request(&req); |
| if (rc) |
| return rc; |
| while(!req.complete) |
| pmu_poll(); |
| if (req.reply[0] == PMU_I2C_STATUS_DATAREAD) { |
| memcpy(data, &req.reply[1], req.reply_len - 1); |
| return req.reply_len - 1; |
| } |
| } |
| return -1; |
| } |
| |
| int |
| pmu_i2c_simple_write(int bus, int addr, u8* data, int len) |
| { |
| struct adb_request req; |
| struct pmu_i2c_hdr *hdr = (struct pmu_i2c_hdr *)&req.data[1]; |
| int retry; |
| int rc; |
| |
| for (retry=0; retry<16; retry++) { |
| memset(&req, 0, sizeof(req)); |
| |
| hdr->bus = bus; |
| hdr->address = addr & 0xfe; |
| hdr->mode = PMU_I2C_MODE_SIMPLE; |
| hdr->bus2 = 0; |
| hdr->sub_addr = 0; |
| hdr->comb_addr = 0; |
| hdr->count = len; |
| |
| req.data[0] = PMU_I2C_CMD; |
| memcpy(&req.data[sizeof(struct pmu_i2c_hdr) + 1], data, len); |
| req.nbytes = sizeof(struct pmu_i2c_hdr) + len + 1; |
| req.reply_expected = 0; |
| req.reply_len = 0; |
| req.reply[0] = 0xff; |
| rc = pmu_queue_request(&req); |
| if (rc) |
| return rc; |
| while(!req.complete) |
| pmu_poll(); |
| if (req.reply[0] == PMU_I2C_STATUS_OK) |
| break; |
| mdelay(15); |
| } |
| if (req.reply[0] != PMU_I2C_STATUS_OK) |
| return -1; |
| |
| for (retry=0; retry<16; retry++) { |
| memset(&req, 0, sizeof(req)); |
| |
| mdelay(15); |
| |
| hdr->bus = PMU_I2C_BUS_STATUS; |
| req.reply[0] = 0xff; |
| |
| req.nbytes = 2; |
| req.reply_expected = 0; |
| req.reply_len = 0; |
| req.data[0] = PMU_I2C_CMD; |
| rc = pmu_queue_request(&req); |
| if (rc) |
| return rc; |
| while(!req.complete) |
| pmu_poll(); |
| if (req.reply[0] == PMU_I2C_STATUS_OK) |
| return len; |
| } |
| return -1; |
| } |
| |
| #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; |
| } |
| |
| /* Disable clock spreading on some machines */ |
| pmac_tweak_clock_spreading(0); |
| |
| /* 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(); |
| |
| /* Re-enable clock spreading on some machines */ |
| pmac_tweak_clock_spreading(1); |
| |
| /* 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; |
| } |
| |
|