From: Alex Deucher alexander.deucher@amd.com

The board has an lm63 compatible thermal chip, but no thermal chip entry in the vbios tables.

Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=39513

Signed-off-by: Alex Deucher alexander.deucher@amd.com --- drivers/gpu/drm/radeon/radeon_combios.c | 21 ++++++++++++++++++++- 1 files changed, 20 insertions(+), 1 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c index a74217c..e0138b6 100644 --- a/drivers/gpu/drm/radeon/radeon_combios.c +++ b/drivers/gpu/drm/radeon/radeon_combios.c @@ -2557,6 +2557,7 @@ void radeon_combios_get_power_modes(struct radeon_device *rdev) u16 offset, misc, misc2 = 0; u8 rev, blocks, tmp; int state_index = 0; + struct radeon_i2c_bus_rec i2c_bus;

rdev->pm.default_power_state_index = -1;

@@ -2575,7 +2576,6 @@ void radeon_combios_get_power_modes(struct radeon_device *rdev) 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);

@@ -2617,6 +2617,25 @@ void radeon_combios_get_power_modes(struct radeon_device *rdev) i2c_new_device(&rdev->pm.i2c_bus->adapter, &info); } } + } else { + /* boards with a thermal chip, but no overdrive table */ + + /* Asus 9600xt has an f75375 on the monid bus */ + if ((dev->pdev->device == 0x4152) && + (dev->pdev->subsystem_vendor == 0x1043) && + (dev->pdev->subsystem_device == 0xc002)) { + i2c_bus = combios_setup_i2c_bus(rdev, DDC_MONID, 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 = "f75375"; + info.addr = 0x28; + strlcpy(info.type, name, sizeof(info.type)); + i2c_new_device(&rdev->pm.i2c_bus->adapter, &info); + DRM_INFO("Possible %s thermal controller at 0x%02x\n", + name, info.addr); + } + } }

if (rdev->flags & RADEON_IS_MOBILITY) {