mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-30 00:06:46 +07:00
Pull ec into release branch
This commit is contained in:
Len Brown
commit
03feb05246
@ -1,6 +1,6 @@
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#
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# Makefile for the Linux ACPI interpreter
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#
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#
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export ACPI_CFLAGS
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@ -32,16 +32,17 @@ obj-y += osl.o utils.o \
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processor-objs += processor_core.o processor_throttling.o \
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processor_idle.o processor_thermal.o
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ifdef CONFIG_CPU_FREQ
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processor-objs += processor_perflib.o
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processor-objs += processor_perflib.o
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endif
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obj-y += sleep/
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obj-y += bus.o glue.o
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obj-y += scan.o
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# Keep EC driver first. Initialization of others depend on it.
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obj-$(CONFIG_ACPI_EC) += ec.o
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obj-$(CONFIG_ACPI_AC) += ac.o
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obj-$(CONFIG_ACPI_BATTERY) += battery.o
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obj-$(CONFIG_ACPI_BUTTON) += button.o
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obj-$(CONFIG_ACPI_EC) += ec.o
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obj-$(CONFIG_ACPI_FAN) += fan.o
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obj-$(CONFIG_ACPI_DOCK) += dock.o
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obj-$(CONFIG_ACPI_BAY) += bay.o
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@ -1,6 +1,8 @@
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/*
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* acpi_ec.c - ACPI Embedded Controller Driver ($Revision: 38 $)
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* ec.c - ACPI Embedded Controller Driver (v2.0)
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*
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* Copyright (C) 2006, 2007 Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
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* Copyright (C) 2006 Denis Sadykov <denis.m.sadykov@intel.com>
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* Copyright (C) 2004 Luming Yu <luming.yu@intel.com>
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* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
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* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
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@ -91,9 +93,9 @@ static struct acpi_driver acpi_ec_driver = {
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};
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/* If we find an EC via the ECDT, we need to keep a ptr to its context */
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/* External interfaces use first EC only, so remember */
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static struct acpi_ec {
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acpi_handle handle;
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unsigned long uid;
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unsigned long gpe;
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unsigned long command_addr;
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unsigned long data_addr;
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@ -101,12 +103,8 @@ static struct acpi_ec {
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struct mutex lock;
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atomic_t query_pending;
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atomic_t event_count;
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atomic_t leaving_burst; /* 0 : No, 1 : Yes, 2: abort */
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wait_queue_head_t wait;
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} *ec_ecdt;
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/* External interfaces use first EC only, so remember */
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static struct acpi_device *first_ec;
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} *boot_ec, *first_ec;
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/* --------------------------------------------------------------------------
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Transaction Management
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@ -173,56 +171,6 @@ static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, unsigned count)
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return -ETIME;
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}
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#ifdef ACPI_FUTURE_USAGE
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/*
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* Note: samsung nv5000 doesn't work with ec burst mode.
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* http://bugzilla.kernel.org/show_bug.cgi?id=4980
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*/
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int acpi_ec_enter_burst_mode(struct acpi_ec *ec)
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{
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u8 tmp = 0;
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u8 status = 0;
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status = acpi_ec_read_status(ec);
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if (status != -EINVAL && !(status & ACPI_EC_FLAG_BURST)) {
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status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
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if (status)
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goto end;
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acpi_ec_write_cmd(ec, ACPI_EC_BURST_ENABLE);
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status = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF_1);
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tmp = acpi_ec_read_data(ec);
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if (tmp != 0x90) { /* Burst ACK byte */
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return -EINVAL;
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}
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}
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atomic_set(&ec->leaving_burst, 0);
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return 0;
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end:
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ACPI_EXCEPTION((AE_INFO, status, "EC wait, burst mode"));
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return -1;
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}
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int acpi_ec_leave_burst_mode(struct acpi_ec *ec)
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{
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u8 status = 0;
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status = acpi_ec_read_status(ec);
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if (status != -EINVAL && (status & ACPI_EC_FLAG_BURST)) {
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status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
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if (status)
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goto end;
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acpi_ec_write_cmd(ec, ACPI_EC_BURST_DISABLE);
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acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
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}
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atomic_set(&ec->leaving_burst, 1);
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return 0;
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end:
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ACPI_EXCEPTION((AE_INFO, status, "EC leave burst mode"));
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return -1;
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}
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#endif /* ACPI_FUTURE_USAGE */
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static int acpi_ec_transaction_unlocked(struct acpi_ec *ec, u8 command,
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const u8 * wdata, unsigned wdata_len,
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u8 * rdata, unsigned rdata_len)
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@ -312,6 +260,21 @@ static int acpi_ec_transaction(struct acpi_ec *ec, u8 command,
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return status;
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}
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/*
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* Note: samsung nv5000 doesn't work with ec burst mode.
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* http://bugzilla.kernel.org/show_bug.cgi?id=4980
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*/
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int acpi_ec_burst_enable(struct acpi_ec *ec)
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{
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u8 d;
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return acpi_ec_transaction(ec, ACPI_EC_BURST_ENABLE, NULL, 0, &d, 1);
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}
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int acpi_ec_burst_disable(struct acpi_ec *ec)
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{
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return acpi_ec_transaction(ec, ACPI_EC_BURST_DISABLE, NULL, 0, NULL, 0);
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}
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static int acpi_ec_read(struct acpi_ec *ec, u8 address, u8 * data)
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{
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int result;
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@ -333,18 +296,33 @@ static int acpi_ec_write(struct acpi_ec *ec, u8 address, u8 data)
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/*
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* Externally callable EC access functions. For now, assume 1 EC only
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*/
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int ec_burst_enable(void)
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{
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if (!first_ec)
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return -ENODEV;
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return acpi_ec_burst_enable(first_ec);
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}
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EXPORT_SYMBOL(ec_burst_enable);
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int ec_burst_disable(void)
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{
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if (!first_ec)
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return -ENODEV;
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return acpi_ec_burst_disable(first_ec);
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}
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EXPORT_SYMBOL(ec_burst_disable);
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int ec_read(u8 addr, u8 * val)
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{
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struct acpi_ec *ec;
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int err;
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u8 temp_data;
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if (!first_ec)
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return -ENODEV;
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ec = acpi_driver_data(first_ec);
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err = acpi_ec_read(ec, addr, &temp_data);
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err = acpi_ec_read(first_ec, addr, &temp_data);
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if (!err) {
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*val = temp_data;
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@ -357,15 +335,12 @@ EXPORT_SYMBOL(ec_read);
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int ec_write(u8 addr, u8 val)
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{
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struct acpi_ec *ec;
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int err;
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if (!first_ec)
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return -ENODEV;
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ec = acpi_driver_data(first_ec);
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err = acpi_ec_write(ec, addr, val);
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err = acpi_ec_write(first_ec, addr, val);
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return err;
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}
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@ -376,14 +351,10 @@ int ec_transaction(u8 command,
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const u8 * wdata, unsigned wdata_len,
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u8 * rdata, unsigned rdata_len)
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{
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struct acpi_ec *ec;
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if (!first_ec)
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return -ENODEV;
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ec = acpi_driver_data(first_ec);
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return acpi_ec_transaction(ec, command, wdata,
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return acpi_ec_transaction(first_ec, command, wdata,
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wdata_len, rdata, rdata_len);
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}
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@ -420,7 +391,7 @@ static int acpi_ec_query(struct acpi_ec *ec, u8 * data)
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static void acpi_ec_gpe_query(void *ec_cxt)
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{
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struct acpi_ec *ec = (struct acpi_ec *)ec_cxt;
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struct acpi_ec *ec = ec_cxt;
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u8 value = 0;
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char object_name[8];
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@ -438,8 +409,9 @@ static u32 acpi_ec_gpe_handler(void *data)
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{
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acpi_status status = AE_OK;
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u8 value;
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struct acpi_ec *ec = (struct acpi_ec *)data;
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struct acpi_ec *ec = data;
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atomic_inc(&ec->event_count);
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if (acpi_ec_mode == EC_INTR) {
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wake_up(&ec->wait);
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}
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@ -482,7 +454,7 @@ acpi_ec_space_handler(u32 function,
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void *handler_context, void *region_context)
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{
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int result = 0;
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struct acpi_ec *ec = NULL;
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struct acpi_ec *ec = handler_context;
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u64 temp = *value;
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acpi_integer f_v = 0;
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int i = 0;
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@ -494,8 +466,6 @@ acpi_ec_space_handler(u32 function,
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return AE_BAD_PARAMETER;
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}
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ec = (struct acpi_ec *)handler_context;
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next_byte:
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switch (function) {
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case ACPI_READ:
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@ -551,18 +521,16 @@ static struct proc_dir_entry *acpi_ec_dir;
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static int acpi_ec_read_info(struct seq_file *seq, void *offset)
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{
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struct acpi_ec *ec = (struct acpi_ec *)seq->private;
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struct acpi_ec *ec = seq->private;
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if (!ec)
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goto end;
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seq_printf(seq, "gpe: 0x%02x\n", (u32) ec->gpe);
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seq_printf(seq, "ports: 0x%02x, 0x%02x\n",
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(u32) ec->command_addr, (u32) ec->data_addr);
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seq_printf(seq, "use global lock: %s\n",
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seq_printf(seq, "gpe:\t\t\t0x%02x\n", (u32) ec->gpe);
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seq_printf(seq, "ports:\t\t\t0x%02x, 0x%02x\n",
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(unsigned)ec->command_addr, (unsigned)ec->data_addr);
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seq_printf(seq, "use global lock:\t%s\n",
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ec->global_lock ? "yes" : "no");
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acpi_enable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
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|
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end:
|
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return 0;
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}
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@ -619,154 +587,122 @@ static int acpi_ec_remove_fs(struct acpi_device *device)
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/* --------------------------------------------------------------------------
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Driver Interface
|
||||
-------------------------------------------------------------------------- */
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||||
static acpi_status
|
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ec_parse_io_ports(struct acpi_resource *resource, void *context);
|
||||
|
||||
static acpi_status
|
||||
ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval);
|
||||
|
||||
static struct acpi_ec *make_acpi_ec(void)
|
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{
|
||||
struct acpi_ec *ec = kzalloc(sizeof(struct acpi_ec), GFP_KERNEL);
|
||||
if (!ec)
|
||||
return NULL;
|
||||
|
||||
atomic_set(&ec->query_pending, 1);
|
||||
atomic_set(&ec->event_count, 1);
|
||||
mutex_init(&ec->lock);
|
||||
init_waitqueue_head(&ec->wait);
|
||||
|
||||
return ec;
|
||||
}
|
||||
|
||||
static int acpi_ec_add(struct acpi_device *device)
|
||||
{
|
||||
int result = 0;
|
||||
acpi_status status = AE_OK;
|
||||
struct acpi_ec *ec = NULL;
|
||||
|
||||
if (!device)
|
||||
return -EINVAL;
|
||||
|
||||
ec = kzalloc(sizeof(struct acpi_ec), GFP_KERNEL);
|
||||
strcpy(acpi_device_name(device), ACPI_EC_DEVICE_NAME);
|
||||
strcpy(acpi_device_class(device), ACPI_EC_CLASS);
|
||||
|
||||
ec = make_acpi_ec();
|
||||
if (!ec)
|
||||
return -ENOMEM;
|
||||
|
||||
ec->handle = device->handle;
|
||||
ec->uid = -1;
|
||||
mutex_init(&ec->lock);
|
||||
atomic_set(&ec->query_pending, 0);
|
||||
atomic_set(&ec->event_count, 1);
|
||||
if (acpi_ec_mode == EC_INTR) {
|
||||
atomic_set(&ec->leaving_burst, 1);
|
||||
init_waitqueue_head(&ec->wait);
|
||||
status = ec_parse_device(device->handle, 0, ec, NULL);
|
||||
if (status != AE_CTRL_TERMINATE) {
|
||||
kfree(ec);
|
||||
return -EINVAL;
|
||||
}
|
||||
strcpy(acpi_device_name(device), ACPI_EC_DEVICE_NAME);
|
||||
strcpy(acpi_device_class(device), ACPI_EC_CLASS);
|
||||
|
||||
/* Check if we found the boot EC */
|
||||
if (boot_ec) {
|
||||
if (boot_ec->gpe == ec->gpe) {
|
||||
/* We might have incorrect info for GL at boot time */
|
||||
mutex_lock(&boot_ec->lock);
|
||||
boot_ec->global_lock = ec->global_lock;
|
||||
mutex_unlock(&boot_ec->lock);
|
||||
kfree(ec);
|
||||
ec = boot_ec;
|
||||
}
|
||||
} else
|
||||
first_ec = ec;
|
||||
ec->handle = device->handle;
|
||||
acpi_driver_data(device) = ec;
|
||||
|
||||
/* Use the global lock for all EC transactions? */
|
||||
acpi_evaluate_integer(ec->handle, "_GLK", NULL, &ec->global_lock);
|
||||
|
||||
/* XXX we don't test uids, because on some boxes ecdt uid = 0, see:
|
||||
http://bugzilla.kernel.org/show_bug.cgi?id=6111 */
|
||||
if (ec_ecdt) {
|
||||
acpi_remove_address_space_handler(ACPI_ROOT_OBJECT,
|
||||
ACPI_ADR_SPACE_EC,
|
||||
&acpi_ec_space_handler);
|
||||
|
||||
acpi_remove_gpe_handler(NULL, ec_ecdt->gpe,
|
||||
&acpi_ec_gpe_handler);
|
||||
|
||||
kfree(ec_ecdt);
|
||||
}
|
||||
|
||||
/* Get GPE bit assignment (EC events). */
|
||||
/* TODO: Add support for _GPE returning a package */
|
||||
status = acpi_evaluate_integer(ec->handle, "_GPE", NULL, &ec->gpe);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
ACPI_EXCEPTION((AE_INFO, status,
|
||||
"Obtaining GPE bit assignment"));
|
||||
result = -ENODEV;
|
||||
goto end;
|
||||
}
|
||||
|
||||
result = acpi_ec_add_fs(device);
|
||||
if (result)
|
||||
goto end;
|
||||
acpi_ec_add_fs(device);
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s [%s] (gpe %d) interrupt mode.",
|
||||
acpi_device_name(device), acpi_device_bid(device),
|
||||
(u32) ec->gpe));
|
||||
|
||||
if (!first_ec)
|
||||
first_ec = device;
|
||||
|
||||
end:
|
||||
if (result)
|
||||
kfree(ec);
|
||||
|
||||
return result;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int acpi_ec_remove(struct acpi_device *device, int type)
|
||||
{
|
||||
struct acpi_ec *ec = NULL;
|
||||
struct acpi_ec *ec;
|
||||
|
||||
if (!device)
|
||||
return -EINVAL;
|
||||
|
||||
ec = acpi_driver_data(device);
|
||||
|
||||
acpi_ec_remove_fs(device);
|
||||
acpi_driver_data(device) = NULL;
|
||||
if (ec == first_ec)
|
||||
first_ec = NULL;
|
||||
|
||||
kfree(ec);
|
||||
|
||||
/* Don't touch boot EC */
|
||||
if (boot_ec != ec)
|
||||
kfree(ec);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static acpi_status
|
||||
acpi_ec_io_ports(struct acpi_resource *resource, void *context)
|
||||
ec_parse_io_ports(struct acpi_resource *resource, void *context)
|
||||
{
|
||||
struct acpi_ec *ec = (struct acpi_ec *)context;
|
||||
struct acpi_ec *ec = context;
|
||||
|
||||
if (resource->type != ACPI_RESOURCE_TYPE_IO) {
|
||||
if (resource->type != ACPI_RESOURCE_TYPE_IO)
|
||||
return AE_OK;
|
||||
}
|
||||
|
||||
/*
|
||||
* The first address region returned is the data port, and
|
||||
* the second address region returned is the status/command
|
||||
* port.
|
||||
*/
|
||||
if (ec->data_addr == 0) {
|
||||
if (ec->data_addr == 0)
|
||||
ec->data_addr = resource->data.io.minimum;
|
||||
} else if (ec->command_addr == 0) {
|
||||
else if (ec->command_addr == 0)
|
||||
ec->command_addr = resource->data.io.minimum;
|
||||
} else {
|
||||
else
|
||||
return AE_CTRL_TERMINATE;
|
||||
}
|
||||
|
||||
return AE_OK;
|
||||
}
|
||||
|
||||
static int acpi_ec_start(struct acpi_device *device)
|
||||
static int ec_install_handlers(struct acpi_ec *ec)
|
||||
{
|
||||
acpi_status status = AE_OK;
|
||||
struct acpi_ec *ec = NULL;
|
||||
|
||||
if (!device)
|
||||
return -EINVAL;
|
||||
|
||||
ec = acpi_driver_data(device);
|
||||
|
||||
if (!ec)
|
||||
return -EINVAL;
|
||||
|
||||
/*
|
||||
* Get I/O port addresses. Convert to GAS format.
|
||||
*/
|
||||
status = acpi_walk_resources(ec->handle, METHOD_NAME__CRS,
|
||||
acpi_ec_io_ports, ec);
|
||||
if (ACPI_FAILURE(status) || ec->command_addr == 0) {
|
||||
ACPI_EXCEPTION((AE_INFO, status,
|
||||
"Error getting I/O port addresses"));
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "gpe=0x%02lx, ports=0x%2lx,0x%2lx",
|
||||
ec->gpe, ec->command_addr, ec->data_addr));
|
||||
|
||||
/*
|
||||
* Install GPE handler
|
||||
*/
|
||||
acpi_status status;
|
||||
status = acpi_install_gpe_handler(NULL, ec->gpe,
|
||||
ACPI_GPE_EDGE_TRIGGERED,
|
||||
&acpi_ec_gpe_handler, ec);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
if (ACPI_FAILURE(status))
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
acpi_set_gpe_type(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
|
||||
acpi_enable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
|
||||
|
||||
@ -779,19 +715,50 @@ static int acpi_ec_start(struct acpi_device *device)
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
return AE_OK;
|
||||
/* EC is fully operational, allow queries */
|
||||
atomic_set(&ec->query_pending, 0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int acpi_ec_stop(struct acpi_device *device, int type)
|
||||
static int acpi_ec_start(struct acpi_device *device)
|
||||
{
|
||||
acpi_status status = AE_OK;
|
||||
struct acpi_ec *ec = NULL;
|
||||
struct acpi_ec *ec;
|
||||
|
||||
if (!device)
|
||||
return -EINVAL;
|
||||
|
||||
ec = acpi_driver_data(device);
|
||||
|
||||
if (!ec)
|
||||
return -EINVAL;
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "gpe=0x%02lx, ports=0x%2lx,0x%2lx",
|
||||
ec->gpe, ec->command_addr, ec->data_addr));
|
||||
|
||||
/* Boot EC is already working */
|
||||
if (ec == boot_ec)
|
||||
return 0;
|
||||
|
||||
return ec_install_handlers(ec);
|
||||
}
|
||||
|
||||
static int acpi_ec_stop(struct acpi_device *device, int type)
|
||||
{
|
||||
acpi_status status;
|
||||
struct acpi_ec *ec;
|
||||
|
||||
if (!device)
|
||||
return -EINVAL;
|
||||
|
||||
ec = acpi_driver_data(device);
|
||||
if (!ec)
|
||||
return -EINVAL;
|
||||
|
||||
/* Don't touch boot EC */
|
||||
if (ec == boot_ec)
|
||||
return 0;
|
||||
|
||||
status = acpi_remove_address_space_handler(ec->handle,
|
||||
ACPI_ADR_SPACE_EC,
|
||||
&acpi_ec_space_handler);
|
||||
@ -805,164 +772,67 @@ static int acpi_ec_stop(struct acpi_device *device, int type)
|
||||
return 0;
|
||||
}
|
||||
|
||||
static acpi_status __init
|
||||
acpi_fake_ecdt_callback(acpi_handle handle,
|
||||
u32 Level, void *context, void **retval)
|
||||
static acpi_status
|
||||
ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval)
|
||||
{
|
||||
acpi_status status;
|
||||
|
||||
mutex_init(&ec_ecdt->lock);
|
||||
atomic_set(&ec_ecdt->event_count, 1);
|
||||
if (acpi_ec_mode == EC_INTR) {
|
||||
init_waitqueue_head(&ec_ecdt->wait);
|
||||
}
|
||||
struct acpi_ec *ec = context;
|
||||
status = acpi_walk_resources(handle, METHOD_NAME__CRS,
|
||||
acpi_ec_io_ports, ec_ecdt);
|
||||
ec_parse_io_ports, ec);
|
||||
if (ACPI_FAILURE(status))
|
||||
return status;
|
||||
|
||||
ec_ecdt->uid = -1;
|
||||
acpi_evaluate_integer(handle, "_UID", NULL, &ec_ecdt->uid);
|
||||
|
||||
status = acpi_evaluate_integer(handle, "_GPE", NULL, &ec_ecdt->gpe);
|
||||
/* Get GPE bit assignment (EC events). */
|
||||
/* TODO: Add support for _GPE returning a package */
|
||||
status = acpi_evaluate_integer(handle, "_GPE", NULL, &ec->gpe);
|
||||
if (ACPI_FAILURE(status))
|
||||
return status;
|
||||
ec_ecdt->global_lock = TRUE;
|
||||
ec_ecdt->handle = handle;
|
||||
|
||||
/* Use the global lock for all EC transactions? */
|
||||
acpi_evaluate_integer(handle, "_GLK", NULL, &ec->global_lock);
|
||||
|
||||
ec->handle = handle;
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "GPE=0x%02lx, ports=0x%2lx, 0x%2lx",
|
||||
ec_ecdt->gpe, ec_ecdt->command_addr,
|
||||
ec_ecdt->data_addr));
|
||||
ec->gpe, ec->command_addr, ec->data_addr));
|
||||
|
||||
return AE_CTRL_TERMINATE;
|
||||
}
|
||||
|
||||
/*
|
||||
* Some BIOS (such as some from Gateway laptops) access EC region very early
|
||||
* such as in BAT0._INI or EC._INI before an EC device is found and
|
||||
* do not provide an ECDT. According to ACPI spec, ECDT isn't mandatorily
|
||||
* required, but if EC regison is accessed early, it is required.
|
||||
* The routine tries to workaround the BIOS bug by pre-scan EC device
|
||||
* It assumes that _CRS, _HID, _GPE, _UID methods of EC don't touch any
|
||||
* op region (since _REG isn't invoked yet). The assumption is true for
|
||||
* all systems found.
|
||||
*/
|
||||
static int __init acpi_ec_fake_ecdt(void)
|
||||
{
|
||||
acpi_status status;
|
||||
int ret = 0;
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Try to make an fake ECDT"));
|
||||
|
||||
ec_ecdt = kzalloc(sizeof(struct acpi_ec), GFP_KERNEL);
|
||||
if (!ec_ecdt) {
|
||||
ret = -ENOMEM;
|
||||
goto error;
|
||||
}
|
||||
|
||||
status = acpi_get_devices(ACPI_EC_HID,
|
||||
acpi_fake_ecdt_callback, NULL, NULL);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
kfree(ec_ecdt);
|
||||
ec_ecdt = NULL;
|
||||
ret = -ENODEV;
|
||||
ACPI_EXCEPTION((AE_INFO, status, "Can't make an fake ECDT"));
|
||||
goto error;
|
||||
}
|
||||
return 0;
|
||||
error:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __init acpi_ec_get_real_ecdt(void)
|
||||
int __init acpi_ec_ecdt_probe(void)
|
||||
{
|
||||
int ret;
|
||||
acpi_status status;
|
||||
struct acpi_table_ecdt *ecdt_ptr;
|
||||
|
||||
boot_ec = make_acpi_ec();
|
||||
if (!boot_ec)
|
||||
return -ENOMEM;
|
||||
/*
|
||||
* Generate a boot ec context
|
||||
*/
|
||||
|
||||
status = acpi_get_table(ACPI_SIG_ECDT, 1,
|
||||
(struct acpi_table_header **)&ecdt_ptr);
|
||||
if (ACPI_FAILURE(status))
|
||||
return -ENODEV;
|
||||
goto error;
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found ECDT"));
|
||||
|
||||
/*
|
||||
* Generate a temporary ec context to use until the namespace is scanned
|
||||
*/
|
||||
ec_ecdt = kzalloc(sizeof(struct acpi_ec), GFP_KERNEL);
|
||||
if (!ec_ecdt)
|
||||
return -ENOMEM;
|
||||
boot_ec->command_addr = ecdt_ptr->control.address;
|
||||
boot_ec->data_addr = ecdt_ptr->data.address;
|
||||
boot_ec->gpe = ecdt_ptr->gpe;
|
||||
boot_ec->handle = ACPI_ROOT_OBJECT;
|
||||
|
||||
mutex_init(&ec_ecdt->lock);
|
||||
atomic_set(&ec_ecdt->event_count, 1);
|
||||
if (acpi_ec_mode == EC_INTR) {
|
||||
init_waitqueue_head(&ec_ecdt->wait);
|
||||
}
|
||||
ec_ecdt->command_addr = ecdt_ptr->control.address;
|
||||
ec_ecdt->data_addr = ecdt_ptr->data.address;
|
||||
ec_ecdt->gpe = ecdt_ptr->gpe;
|
||||
/* use the GL just to be safe */
|
||||
ec_ecdt->global_lock = TRUE;
|
||||
ec_ecdt->uid = ecdt_ptr->uid;
|
||||
|
||||
status = acpi_get_handle(NULL, ecdt_ptr->id, &ec_ecdt->handle);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
goto error;
|
||||
}
|
||||
|
||||
return 0;
|
||||
error:
|
||||
ACPI_EXCEPTION((AE_INFO, status, "Could not use ECDT"));
|
||||
kfree(ec_ecdt);
|
||||
ec_ecdt = NULL;
|
||||
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
static int __initdata acpi_fake_ecdt_enabled;
|
||||
int __init acpi_ec_ecdt_probe(void)
|
||||
{
|
||||
acpi_status status;
|
||||
int ret;
|
||||
|
||||
ret = acpi_ec_get_real_ecdt();
|
||||
/* Try to make a fake ECDT */
|
||||
if (ret && acpi_fake_ecdt_enabled) {
|
||||
ret = acpi_ec_fake_ecdt();
|
||||
}
|
||||
|
||||
if (ret)
|
||||
ret = ec_install_handlers(boot_ec);
|
||||
if (!ret) {
|
||||
first_ec = boot_ec;
|
||||
return 0;
|
||||
|
||||
/*
|
||||
* Install GPE handler
|
||||
*/
|
||||
status = acpi_install_gpe_handler(NULL, ec_ecdt->gpe,
|
||||
ACPI_GPE_EDGE_TRIGGERED,
|
||||
&acpi_ec_gpe_handler, ec_ecdt);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
goto error;
|
||||
}
|
||||
acpi_set_gpe_type(NULL, ec_ecdt->gpe, ACPI_GPE_TYPE_RUNTIME);
|
||||
acpi_enable_gpe(NULL, ec_ecdt->gpe, ACPI_NOT_ISR);
|
||||
|
||||
status = acpi_install_address_space_handler(ACPI_ROOT_OBJECT,
|
||||
ACPI_ADR_SPACE_EC,
|
||||
&acpi_ec_space_handler,
|
||||
&acpi_ec_space_setup,
|
||||
ec_ecdt);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
acpi_remove_gpe_handler(NULL, ec_ecdt->gpe,
|
||||
&acpi_ec_gpe_handler);
|
||||
goto error;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
error:
|
||||
ACPI_EXCEPTION((AE_INFO, status, "Could not use ECDT"));
|
||||
kfree(ec_ecdt);
|
||||
ec_ecdt = NULL;
|
||||
kfree(boot_ec);
|
||||
boot_ec = NULL;
|
||||
|
||||
return -ENODEV;
|
||||
}
|
||||
@ -1003,13 +873,6 @@ static void __exit acpi_ec_exit(void)
|
||||
}
|
||||
#endif /* 0 */
|
||||
|
||||
static int __init acpi_fake_ecdt_setup(char *str)
|
||||
{
|
||||
acpi_fake_ecdt_enabled = 1;
|
||||
return 1;
|
||||
}
|
||||
|
||||
__setup("acpi_fake_ecdt", acpi_fake_ecdt_setup);
|
||||
static int __init acpi_ec_set_intr_mode(char *str)
|
||||
{
|
||||
int intr;
|
||||
@ -1017,12 +880,8 @@ static int __init acpi_ec_set_intr_mode(char *str)
|
||||
if (!get_option(&str, &intr))
|
||||
return 0;
|
||||
|
||||
if (intr) {
|
||||
acpi_ec_mode = EC_INTR;
|
||||
} else {
|
||||
acpi_ec_mode = EC_POLL;
|
||||
}
|
||||
acpi_ec_driver.ops.add = acpi_ec_add;
|
||||
acpi_ec_mode = (intr) ? EC_INTR : EC_POLL;
|
||||
|
||||
printk(KERN_NOTICE PREFIX "%s mode.\n", intr ? "interrupt" : "polling");
|
||||
|
||||
return 1;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user