diff options
author | Len Brown <len.brown@intel.com> | 2007-11-21 01:07:49 (GMT) |
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committer | Len Brown <len.brown@intel.com> | 2007-11-21 01:07:49 (GMT) |
commit | a3f095ade0f5fd2a09a7f523632d762314452871 (patch) | |
tree | 24e23bc2077ae866be9c43cc1f419db46f043714 /drivers/acpi | |
parent | e6532b8883760bdf9d251c669a3919fc9457aeca (diff) | |
parent | e790cc8bbb990df900eabdda18a5a480d22a60c8 (diff) | |
download | linux-fsl-qoriq-a3f095ade0f5fd2a09a7f523632d762314452871.tar.xz |
Pull bugzilla-9327 into release branch
Conflicts:
drivers/acpi/ec.c
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r-- | drivers/acpi/ec.c | 61 | ||||
-rw-r--r-- | drivers/acpi/processor_core.c | 5 |
2 files changed, 46 insertions, 20 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index c502856..d411017 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -47,6 +47,9 @@ #undef PREFIX #define PREFIX "ACPI: EC: " +/* Uncomment next line to get verbose print outs*/ +/* #define DEBUG */ + /* EC status register */ #define ACPI_EC_FLAG_OBF 0x01 /* Output buffer full */ #define ACPI_EC_FLAG_IBF 0x02 /* Input buffer full */ @@ -77,6 +80,8 @@ enum { EC_FLAGS_GPE_MODE, /* Expect GPE to be sent for status change */ EC_FLAGS_NO_ADDRESS_GPE, /* Expect GPE only for non-address event */ EC_FLAGS_ADDRESS, /* Address is being written */ + EC_FLAGS_NO_WDATA_GPE, /* Don't expect WDATA GPE event */ + EC_FLAGS_WDATA, /* Data is being written */ }; static int acpi_ec_remove(struct acpi_device *device, int type); @@ -132,21 +137,27 @@ static struct acpi_ec { static inline u8 acpi_ec_read_status(struct acpi_ec *ec) { - return inb(ec->command_addr); + u8 x = inb(ec->command_addr); + pr_debug(PREFIX "---> status = 0x%2x\n", x); + return x; } static inline u8 acpi_ec_read_data(struct acpi_ec *ec) { + u8 x = inb(ec->data_addr); + pr_debug(PREFIX "---> data = 0x%2x\n", x); return inb(ec->data_addr); } static inline void acpi_ec_write_cmd(struct acpi_ec *ec, u8 command) { + pr_debug(PREFIX "<--- command = 0x%2x\n", command); outb(command, ec->command_addr); } static inline void acpi_ec_write_data(struct acpi_ec *ec, u8 data) { + pr_debug(PREFIX "<--- data = 0x%2x\n", data); outb(data, ec->data_addr); } @@ -171,6 +182,9 @@ static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll) if (unlikely(test_bit(EC_FLAGS_ADDRESS, &ec->flags) && test_bit(EC_FLAGS_NO_ADDRESS_GPE, &ec->flags))) force_poll = 1; + if (unlikely(test_bit(EC_FLAGS_WDATA, &ec->flags) && + test_bit(EC_FLAGS_NO_WDATA_GPE, &ec->flags))) + force_poll = 1; if (likely(test_bit(EC_FLAGS_GPE_MODE, &ec->flags)) && likely(!force_poll)) { if (wait_event_timeout(ec->wait, acpi_ec_check_status(ec, event), @@ -180,13 +194,19 @@ static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll) if (acpi_ec_check_status(ec, event)) { if (test_bit(EC_FLAGS_ADDRESS, &ec->flags)) { /* miss address GPE, don't expect it anymore */ - printk(KERN_INFO PREFIX "missing address confirmation, " + pr_info(PREFIX "missing address confirmation, " "don't expect it any longer.\n"); set_bit(EC_FLAGS_NO_ADDRESS_GPE, &ec->flags); + } else if (test_bit(EC_FLAGS_WDATA, &ec->flags)) { + /* miss write data GPE, don't expect it */ + pr_info(PREFIX "missing write data confirmation, " + "don't expect it any longer.\n"); + set_bit(EC_FLAGS_NO_WDATA_GPE, &ec->flags); } else { /* missing GPEs, switch back to poll mode */ - printk(KERN_INFO PREFIX "missing confirmations, " - "switch off interrupt mode.\n"); + if (printk_ratelimit()) + pr_info(PREFIX "missing confirmations, " + "switch off interrupt mode.\n"); clear_bit(EC_FLAGS_GPE_MODE, &ec->flags); } goto end; @@ -199,7 +219,7 @@ static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll) goto end; } } - printk(KERN_ERR PREFIX "acpi_ec_wait timeout," + pr_err(PREFIX "acpi_ec_wait timeout," " status = %d, expect_event = %d\n", acpi_ec_read_status(ec), event); ret = -ETIME; @@ -216,11 +236,11 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec, u8 command, int result = 0; set_bit(EC_FLAGS_WAIT_GPE, &ec->flags); acpi_ec_write_cmd(ec, command); - + pr_debug(PREFIX "transaction start\n"); for (; wdata_len > 0; --wdata_len) { result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0, force_poll); if (result) { - printk(KERN_ERR PREFIX + pr_err(PREFIX "write_cmd timeout, command = %d\n", command); goto end; } @@ -232,9 +252,10 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec, u8 command, } if (!rdata_len) { + set_bit(EC_FLAGS_WDATA, &ec->flags); result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0, force_poll); if (result) { - printk(KERN_ERR PREFIX + pr_err(PREFIX "finish-write timeout, command = %d\n", command); goto end; } @@ -244,8 +265,7 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec, u8 command, for (; rdata_len > 0; --rdata_len) { result = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF_1, force_poll); if (result) { - printk(KERN_ERR PREFIX "read timeout, command = %d\n", - command); + pr_err(PREFIX "read timeout, command = %d\n", command); goto end; } /* Don't expect GPE after last read */ @@ -254,6 +274,7 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec, u8 command, *(rdata++) = acpi_ec_read_data(ec); } end: + pr_debug(PREFIX "transaction end\n"); return result; } @@ -282,8 +303,8 @@ static int acpi_ec_transaction(struct acpi_ec *ec, u8 command, status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0, 0); if (status) { - printk(KERN_ERR PREFIX - "input buffer is not empty, aborting transaction\n"); + pr_err(PREFIX "input buffer is not empty, " + "aborting transaction\n"); goto end; } @@ -497,6 +518,7 @@ static u32 acpi_ec_gpe_handler(void *data) acpi_status status = AE_OK; struct acpi_ec *ec = data; + pr_debug(PREFIX "~~~> interrupt\n"); clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags); if (test_bit(EC_FLAGS_GPE_MODE, &ec->flags)) wake_up(&ec->wait); @@ -507,8 +529,9 @@ static u32 acpi_ec_gpe_handler(void *data) acpi_ec_gpe_query, ec); } else if (unlikely(!test_bit(EC_FLAGS_GPE_MODE, &ec->flags))) { /* this is non-query, must be confirmation */ - printk(KERN_INFO PREFIX "non-query interrupt received," - " switching to interrupt mode\n"); + if (printk_ratelimit()) + pr_info(PREFIX "non-query interrupt received," + " switching to interrupt mode\n"); set_bit(EC_FLAGS_GPE_MODE, &ec->flags); } @@ -710,10 +733,10 @@ static void ec_remove_handlers(struct acpi_ec *ec) { if (ACPI_FAILURE(acpi_remove_address_space_handler(ec->handle, ACPI_ADR_SPACE_EC, &acpi_ec_space_handler))) - printk(KERN_ERR PREFIX "failed to remove space handler\n"); + pr_err(PREFIX "failed to remove space handler\n"); if (ACPI_FAILURE(acpi_remove_gpe_handler(NULL, ec->gpe, &acpi_ec_gpe_handler))) - printk(KERN_ERR PREFIX "failed to remove gpe handler\n"); + pr_err(PREFIX "failed to remove gpe handler\n"); ec->handlers_installed = 0; } @@ -756,9 +779,9 @@ static int acpi_ec_add(struct acpi_device *device) first_ec = ec; acpi_driver_data(device) = ec; acpi_ec_add_fs(device); - printk(KERN_INFO PREFIX "GPE = 0x%lx, I/O: command/status = 0x%lx, data = 0x%lx\n", + pr_info(PREFIX "GPE = 0x%lx, I/O: command/status = 0x%lx, data = 0x%lx\n", ec->gpe, ec->command_addr, ec->data_addr); - printk(KERN_INFO PREFIX "driver started in %s mode\n", + pr_info(PREFIX "driver started in %s mode\n", (test_bit(EC_FLAGS_GPE_MODE, &ec->flags))?"interrupt":"poll"); return 0; } @@ -884,7 +907,7 @@ int __init acpi_ec_ecdt_probe(void) status = acpi_get_table(ACPI_SIG_ECDT, 1, (struct acpi_table_header **)&ecdt_ptr); if (ACPI_SUCCESS(status)) { - printk(KERN_INFO PREFIX "EC description table is found, configuring boot EC\n"); + pr_info(PREFIX "EC description table is found, configuring boot EC\n"); boot_ec->command_addr = ecdt_ptr->control.address; boot_ec->data_addr = ecdt_ptr->data.address; boot_ec->gpe = ecdt_ptr->gpe; diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 949ba03..015689d29 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -684,7 +684,7 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data) { struct acpi_processor *pr = data; struct acpi_device *device = NULL; - + int saved; if (!pr) return; @@ -694,7 +694,10 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data) switch (event) { case ACPI_PROCESSOR_NOTIFY_PERFORMANCE: + saved = pr->performance_platform_limit; acpi_processor_ppc_has_changed(pr); + if (saved == pr->performance_platform_limit) + break; acpi_bus_generate_proc_event(device, event, pr->performance_platform_limit); acpi_bus_generate_netlink_event(device->pnp.device_class, |