Signed-off-by: Alex Deucher <alexdeuc...@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) {
--
1.7.1.1
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