From 09f1fb41ad45bc18abe07c62f7b56560571584d1 Mon Sep 17 00:00:00 2001 From: Alexey Starikovskiy Date: Sat, 8 Dec 2007 13:02:33 +0300 Subject: [PATCH 1/3] ACPI: SBS: Reset alarm bit Alarm bit should be cleared in order for other alarms to be sent. http://bugzilla.kernel.org/show_bug.cgi?id=9362 Signed-off-by: Alexey Starikovskiy Signed-off-by: Len Brown --- drivers/acpi/sbshc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/acpi/sbshc.c b/drivers/acpi/sbshc.c index 046d7c3ed356..12a1532513e3 100644 --- a/drivers/acpi/sbshc.c +++ b/drivers/acpi/sbshc.c @@ -222,6 +222,7 @@ static int smbus_alarm(void *context) if (!status.fields.alarm) return 0; mutex_lock(&hc->lock); + status.fields.alarm = 0; smb_hc_write(hc, ACPI_SMB_STATUS, status.raw); if (hc->callback) acpi_os_execute(OSL_GPE_HANDLER, acpi_smbus_callback, hc); From c2d00f2d1bf8dd721f5557b0df23729addc1898d Mon Sep 17 00:00:00 2001 From: Alexey Starikovskiy Date: Sat, 8 Dec 2007 13:02:40 +0300 Subject: [PATCH 2/3] ACPI: SBS: Ignore alarms coming from unknown devices http://bugzilla.kernel.org/show_bug.cgi?id=9362 Signed-off-by: Alexey Starikovskiy Signed-off-by: Len Brown --- drivers/acpi/sbs.c | 6 ------ drivers/acpi/sbshc.c | 16 ++++++++++++---- drivers/acpi/sbshc.h | 6 ++++++ 3 files changed, 18 insertions(+), 10 deletions(-) diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c index 6045cdbe176b..813ef328f743 100644 --- a/drivers/acpi/sbs.c +++ b/drivers/acpi/sbs.c @@ -54,12 +54,6 @@ #define ACPI_BATTERY_DIR_NAME "BAT%i" #define ACPI_AC_DIR_NAME "AC0" -enum acpi_sbs_device_addr { - ACPI_SBS_CHARGER = 0x9, - ACPI_SBS_MANAGER = 0xa, - ACPI_SBS_BATTERY = 0xb, -}; - #define ACPI_SBS_NOTIFY_STATUS 0x80 #define ACPI_SBS_NOTIFY_INFO 0x81 diff --git a/drivers/acpi/sbshc.c b/drivers/acpi/sbshc.c index 12a1532513e3..fd40b6a1d639 100644 --- a/drivers/acpi/sbshc.c +++ b/drivers/acpi/sbshc.c @@ -202,10 +202,9 @@ int acpi_smbus_unregister_callback(struct acpi_smb_hc *hc) EXPORT_SYMBOL_GPL(acpi_smbus_unregister_callback); -static void acpi_smbus_callback(void *context) +static inline void acpi_smbus_callback(void *context) { struct acpi_smb_hc *hc = context; - if (hc->callback) hc->callback(hc->context); } @@ -214,6 +213,7 @@ static int smbus_alarm(void *context) { struct acpi_smb_hc *hc = context; union acpi_smb_status status; + u8 address; if (smb_hc_read(hc, ACPI_SMB_STATUS, &status.raw)) return 0; /* Check if it is only a completion notify */ @@ -222,10 +222,18 @@ static int smbus_alarm(void *context) if (!status.fields.alarm) return 0; mutex_lock(&hc->lock); + smb_hc_read(hc, ACPI_SMB_ALARM_ADDRESS, &address); status.fields.alarm = 0; smb_hc_write(hc, ACPI_SMB_STATUS, status.raw); - if (hc->callback) - acpi_os_execute(OSL_GPE_HANDLER, acpi_smbus_callback, hc); + /* We are only interested in events coming from known devices */ + switch (address >> 1) { + case ACPI_SBS_CHARGER: + case ACPI_SBS_MANAGER: + case ACPI_SBS_BATTERY: + acpi_os_execute(OSL_GPE_HANDLER, + acpi_smbus_callback, hc); + default:; + } mutex_unlock(&hc->lock); return 0; } diff --git a/drivers/acpi/sbshc.h b/drivers/acpi/sbshc.h index 3bda3491a97b..a57b0762dd7f 100644 --- a/drivers/acpi/sbshc.h +++ b/drivers/acpi/sbshc.h @@ -16,6 +16,12 @@ enum acpi_smb_protocol { static const u8 SMBUS_PEC = 0x80; +enum acpi_sbs_device_addr { + ACPI_SBS_CHARGER = 0x9, + ACPI_SBS_MANAGER = 0xa, + ACPI_SBS_BATTERY = 0xb, +}; + typedef void (*smbus_alarm_callback)(void *context); extern int acpi_smbus_read(struct acpi_smb_hc *hc, u8 protocol, u8 address, From 5a21e4fe587ebb793bf3a1c02755f8a845170328 Mon Sep 17 00:00:00 2001 From: Alexey Starikovskiy Date: Sat, 8 Dec 2007 13:02:46 +0300 Subject: [PATCH 3/3] ACPI: SBS: Return rate in mW if capacity in mWh klaptopd assumes rate to be in same units as capacity. http://bugzilla.kernel.org/show_bug.cgi?id=9362 Signed-off-by: Alexey Starikovskiy Signed-off-by: Len Brown --- drivers/acpi/sbs.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c index 813ef328f743..22cb95b349e4 100644 --- a/drivers/acpi/sbs.c +++ b/drivers/acpi/sbs.c @@ -533,7 +533,7 @@ static struct proc_dir_entry *acpi_battery_dir = NULL; static inline char *acpi_battery_units(struct acpi_battery *battery) { - return acpi_battery_mode(battery) ? " mWh" : " mAh"; + return acpi_battery_mode(battery) ? " mW" : " mA"; } @@ -550,10 +550,10 @@ static int acpi_battery_read_info(struct seq_file *seq, void *offset) if (!battery->present) goto end; - seq_printf(seq, "design capacity: %i%s\n", + seq_printf(seq, "design capacity: %i%sh\n", battery->design_capacity * acpi_battery_scale(battery), acpi_battery_units(battery)); - seq_printf(seq, "last full capacity: %i%s\n", + seq_printf(seq, "last full capacity: %i%sh\n", battery->full_charge_capacity * acpi_battery_scale(battery), acpi_battery_units(battery)); seq_printf(seq, "battery technology: rechargeable\n"); @@ -584,7 +584,7 @@ static int acpi_battery_read_state(struct seq_file *seq, void *offset) { struct acpi_battery *battery = seq->private; struct acpi_sbs *sbs = battery->sbs; - int result = 0; + int rate; mutex_lock(&sbs->lock); seq_printf(seq, "present: %s\n", @@ -598,9 +598,12 @@ static int acpi_battery_read_state(struct seq_file *seq, void *offset) seq_printf(seq, "charging state: %s\n", (battery->current_now < 0) ? "discharging" : ((battery->current_now > 0) ? "charging" : "charged")); - seq_printf(seq, "present rate: %d mA\n", - abs(battery->current_now) * acpi_battery_ipscale(battery)); - seq_printf(seq, "remaining capacity: %i%s\n", + rate = abs(battery->current_now) * acpi_battery_ipscale(battery); + rate *= (acpi_battery_mode(battery))?(battery->voltage_now * + acpi_battery_vscale(battery)/1000):1; + seq_printf(seq, "present rate: %d%s\n", rate, + acpi_battery_units(battery)); + seq_printf(seq, "remaining capacity: %i%sh\n", battery->capacity_now * acpi_battery_scale(battery), acpi_battery_units(battery)); seq_printf(seq, "present voltage: %i mV\n", @@ -608,7 +611,7 @@ static int acpi_battery_read_state(struct seq_file *seq, void *offset) end: mutex_unlock(&sbs->lock); - return result; + return 0; } static int acpi_battery_state_open_fs(struct inode *inode, struct file *file) @@ -632,7 +635,7 @@ static int acpi_battery_read_alarm(struct seq_file *seq, void *offset) acpi_battery_get_alarm(battery); seq_printf(seq, "alarm: "); if (battery->alarm_capacity) - seq_printf(seq, "%i%s\n", + seq_printf(seq, "%i%sh\n", battery->alarm_capacity * acpi_battery_scale(battery), acpi_battery_units(battery));