drm/radeon/kms: expose thermal/fan i2c buses

[safe/jmp/linux-2.6] / drivers / gpu / drm / radeon / radeon_atombios.c

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index e4540b2..815116e 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1461,6 +1461,30 @@ radeon_atombios_get_tv_dac_info(struct radeon_encoder *encoder)
        return tv_dac;
 }
 
+static const char *thermal_controller_names[] = {
+       "NONE",
+       "LM63",
+       "ADM1032",
+       "ADM1030",
+       "MUA6649",
+       "LM64",
+       "F75375",
+       "ASC7512",
+};
+
+static const char *pp_lib_thermal_controller_names[] = {
+       "NONE",
+       "LM63",
+       "ADM1032",
+       "ADM1030",
+       "MUA6649",
+       "LM64",
+       "F75375",
+       "RV6xx",
+       "RV770",
+       "ADT7473",
+};
+
 union power_info {
        struct _ATOM_POWERPLAY_INFO info;
        struct _ATOM_POWERPLAY_INFO_V2 info_2;
@@ -1480,6 +1504,7 @@ void radeon_atombios_get_power_modes(struct radeon_device *rdev)
        struct _ATOM_PPLIB_STATE *power_state;
        int num_modes = 0, i, j;
        int state_index = 0, mode_index = 0;
+       struct radeon_i2c_bus_rec i2c_bus;
 
        atom_parse_data_header(mode_info->atom_context, index, NULL, &frev, &crev, &data_offset);
 
@@ -1489,6 +1514,14 @@ void radeon_atombios_get_power_modes(struct radeon_device *rdev)
 
        if (power_info) {
                if (frev < 4) {
+                       /* add the i2c bus for thermal/fan chip */
+                       if (power_info->info.ucOverdriveThermalController > 0) {
+                               DRM_INFO("Possible %s thermal controller at 0x%02x\n",
+                                        thermal_controller_names[power_info->info.ucOverdriveThermalController],
+                                        power_info->info.ucOverdriveControllerAddress >> 1);
+                               i2c_bus = radeon_lookup_i2c_gpio(rdev, power_info->info.ucOverdriveI2cLine);
+                               rdev->pm.i2c_bus = radeon_i2c_create(rdev->ddev, &i2c_bus, "Thermal");
+                       }
                        num_modes = power_info->info.ucNumOfPowerModeEntries;
                        if (num_modes > ATOM_MAX_NUMBEROF_POWER_BLOCK)
                                num_modes = ATOM_MAX_NUMBEROF_POWER_BLOCK;
@@ -1698,6 +1731,24 @@ void radeon_atombios_get_power_modes(struct radeon_device *rdev)
                                }
                        }
                } else if (frev == 4) {
+                       /* add the i2c bus for thermal/fan chip */
+                       /* no support for internal controller yet */
+                       if (power_info->info_4.sThermalController.ucType > 0) {
+                               if ((power_info->info_4.sThermalController.ucType == ATOM_PP_THERMALCONTROLLER_RV6xx) &&
+                                   (power_info->info_4.sThermalController.ucType == ATOM_PP_THERMALCONTROLLER_RV770)) {
+                                       DRM_INFO("Internal thermal controller %s fan control\n",
+                                                (power_info->info_4.sThermalController.ucFanParameters &
+                                                 ATOM_PP_FANPARAMETERS_NOFAN) ? "without" : "with");
+                               } else {
+                                       DRM_INFO("Possible %s thermal controller at 0x%02x %s fan control\n",
+                                                pp_lib_thermal_controller_names[power_info->info_4.sThermalController.ucType],
+                                                power_info->info_4.sThermalController.ucI2cAddress >> 1,
+                                                (power_info->info_4.sThermalController.ucFanParameters &
+                                                 ATOM_PP_FANPARAMETERS_NOFAN) ? "without" : "with");
+                                       i2c_bus = radeon_lookup_i2c_gpio(rdev, power_info->info_4.sThermalController.ucI2cLine);
+                                       rdev->pm.i2c_bus = radeon_i2c_create(rdev->ddev, &i2c_bus, "Thermal");
+                               }
+                       }
                        for (i = 0; i < power_info->info_4.ucNumStates; i++) {
                                mode_index = 0;
                                power_state = (struct _ATOM_PPLIB_STATE *)