Signed-off-by: Alex Deucher alexdeucher@gmail.com --- drivers/gpu/drm/radeon/radeon_combios.c | 54 +++++++++++++++++++++++++++++++ 1 files changed, 54 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c index 8caf546..089ab92 100644 --- a/drivers/gpu/drm/radeon/radeon_combios.c +++ b/drivers/gpu/drm/radeon/radeon_combios.c @@ -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) {