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drm/radeon/kms: add support for thermal chips on combios asics

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Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2011-05-03 12:44:54 -04:00 committed by Dave Airlie
parent cb3c438ea4
commit 63f7d9828b
1 changed files with 54 additions and 0 deletions
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54
drivers/gpu/drm/radeon/radeon_combios.c
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@ -2504,6 +2504,12 @@ bool radeon_get_legacy_connector_info_from_bios(struct drm_device *dev)
return true;
}
static const char *thermal_controller_names[] = {
"NONE",
"lm63",
"adm1032",
};
void radeon_combios_get_power_modes(struct radeon_device *rdev)
{
struct drm_device *dev = rdev->ddev;
@ -2524,6 +2530,54 @@ void radeon_combios_get_power_modes(struct radeon_device *rdev)
return;
}
/* check for a thermal chip */
offset = combios_get_table_offset(dev, COMBIOS_OVERDRIVE_INFO_TABLE);
if (offset) {
u8 thermal_controller = 0, gpio = 0, i2c_addr = 0, clk_bit = 0, data_bit = 0;
struct radeon_i2c_bus_rec i2c_bus;
rev = RBIOS8(offset);
if (rev == 0) {
thermal_controller = RBIOS8(offset + 3);
gpio = RBIOS8(offset + 4) & 0x3f;
i2c_addr = RBIOS8(offset + 5);
} else if (rev == 1) {
thermal_controller = RBIOS8(offset + 4);
gpio = RBIOS8(offset + 5) & 0x3f;
i2c_addr = RBIOS8(offset + 6);
} else if (rev == 2) {
thermal_controller = RBIOS8(offset + 4);
gpio = RBIOS8(offset + 5) & 0x3f;
i2c_addr = RBIOS8(offset + 6);
clk_bit = RBIOS8(offset + 0xa);
data_bit = RBIOS8(offset + 0xb);
}
if ((thermal_controller > 0) && (thermal_controller < 3)) {
DRM_INFO("Possible %s thermal controller at 0x%02x\n",
thermal_controller_names[thermal_controller],
i2c_addr >> 1);
if (gpio == DDC_LCD) {
/* MM i2c */
i2c_bus.valid = true;
i2c_bus.hw_capable = true;
i2c_bus.mm_i2c = true;
i2c_bus.i2c_id = 0xa0;
} else if (gpio == DDC_GPIO)
i2c_bus = combios_setup_i2c_bus(rdev, gpio, 1 << clk_bit, 1 << data_bit);
else
i2c_bus = combios_setup_i2c_bus(rdev, gpio, 0, 0);
rdev->pm.i2c_bus = radeon_i2c_lookup(rdev, &i2c_bus);
if (rdev->pm.i2c_bus) {
struct i2c_board_info info = { };
const char *name = thermal_controller_names[thermal_controller];
info.addr = i2c_addr >> 1;
strlcpy(info.type, name, sizeof(info.type));
i2c_new_device(&rdev->pm.i2c_bus->adapter, &info);
}
}
}
if (rdev->flags & RADEON_IS_MOBILITY) {
offset = combios_get_table_offset(dev, COMBIOS_POWERPLAY_INFO_TABLE);
if (offset) {