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Made the status register clear code work. Apparently you need to write 1 to the register to set it to zero. It doesn't make any sense to me either.

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@11527 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Nathan Whitehorn 2005-03-02 01:45:02 +00:00
parent 5d2536d2af
commit b53df54f50
1 changed files with 3 additions and 12 deletions
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15
src/add-ons/kernel/drivers/power/acpi_button/acpi_button.c
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@ -61,19 +61,10 @@ acpi_button_read (void* cookie, off_t position, void *buf, size_t* num_bytes)
*((uint8 *)(buf)) = acpi->read_acpi_reg((uint32)(cookie));
/* acpi->write_acpi_reg((uint32)(cookie),0); */
acpi->write_acpi_reg((uint32)(cookie),1);
/* The above simple clearing of the status register doesn't seem to work.
So we toggle the ENABLE bit instead. Hopefully this doesn't interfere
with the debounce logic and result in two events */
if ((uint32)(cookie) == ACPI_BITREG_POWER_BUTTON_STATUS) {
acpi->write_acpi_reg(ACPI_BITREG_POWER_BUTTON_ENABLE,1);
acpi->write_acpi_reg(ACPI_BITREG_POWER_BUTTON_ENABLE,0);
} else if ((uint32)(cookie) == ACPI_BITREG_SLEEP_BUTTON_STATUS) {
acpi->write_acpi_reg(ACPI_BITREG_SLEEP_BUTTON_ENABLE,1);
acpi->write_acpi_reg(ACPI_BITREG_SLEEP_BUTTON_ENABLE,0);
}
/* You need to write 1 to the status register to clear it to 0.
No, I don't understand Intel either. */
*num_bytes = 1;
return B_OK;