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drm/amdgpu/powerplay: program display gap for tonga.

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Implement displaygap programming for tonga.  This is
required for properly mclk switching.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Rex Zhu 2015-10-16 15:02:04 +08:00 committed by Alex Deucher
parent 2f4afc5733
commit bbb207f3da
1 changed files with 91 additions and 0 deletions
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91
drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c
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@ -168,6 +168,13 @@ int tonga_add_voltage(struct pp_hwmgr *hwmgr,
return 0;
}
int tonga_notify_smc_display_change(struct pp_hwmgr *hwmgr, bool has_display)
{
PPSMC_Msg msg = has_display? (PPSMC_Msg)PPSMC_HasDisplay : (PPSMC_Msg)PPSMC_NoDisplay;
return (smum_send_msg_to_smc(hwmgr->smumgr, msg) == 0) ? 0 : -1;
}
uint8_t tonga_get_voltage_id(pp_atomctrl_voltage_table *voltage_table,
uint32_t voltage)
{
@ -4392,6 +4399,10 @@ int tonga_enable_dpm_tasks(struct pp_hwmgr *hwmgr)
PP_ASSERT_WITH_CODE((0 == tmp_result),
"Failed to populate initialize MC Reg table!", result = tmp_result);
tmp_result = tonga_notify_smc_display_change(hwmgr, false);
PP_ASSERT_WITH_CODE((0 == tmp_result),
"Failed to notify no display!", result = tmp_result);
/* enable SCLK control */
tmp_result = tonga_enable_sclk_control(hwmgr);
PP_ASSERT_WITH_CODE((0 == tmp_result),
@ -5679,6 +5690,84 @@ static int tonga_set_power_state_tasks(struct pp_hwmgr *hwmgr, const void *input
return result;
}
int tonga_notify_smc_display_config_after_ps_adjustment(struct pp_hwmgr *hwmgr)
{
uint32_t num_active_displays = 0;
struct cgs_display_info info = {0};
info.mode_info = NULL;
cgs_get_active_displays_info(hwmgr->device, &info);
num_active_displays = info.display_count;
if (num_active_displays > 1) /* to do && (pHwMgr->pPECI->displayConfiguration.bMultiMonitorInSync != TRUE)) */
tonga_notify_smc_display_change(hwmgr, false);
else
tonga_notify_smc_display_change(hwmgr, true);
return 0;
}
/**
* Programs the display gap
*
* @param hwmgr the address of the powerplay hardware manager.
* @return always OK
*/
int tonga_program_display_gap(struct pp_hwmgr *hwmgr)
{
struct tonga_hwmgr *data = (struct tonga_hwmgr *)(hwmgr->backend);
uint32_t num_active_displays = 0;
uint32_t display_gap = cgs_read_ind_register(hwmgr->device, CGS_IND_REG__SMC, ixCG_DISPLAY_GAP_CNTL);
uint32_t display_gap2;
uint32_t pre_vbi_time_in_us;
uint32_t frame_time_in_us;
uint32_t ref_clock;
uint32_t refresh_rate = 0;
struct cgs_display_info info = {0};
struct cgs_mode_info mode_info;
info.mode_info = &mode_info;
cgs_get_active_displays_info(hwmgr->device, &info);
num_active_displays = info.display_count;
display_gap = PHM_SET_FIELD(display_gap, CG_DISPLAY_GAP_CNTL, DISP_GAP, (num_active_displays > 0)? DISPLAY_GAP_VBLANK_OR_WM : DISPLAY_GAP_IGNORE);
cgs_write_ind_register(hwmgr->device, CGS_IND_REG__SMC, ixCG_DISPLAY_GAP_CNTL, display_gap);
ref_clock = mode_info.ref_clock;
refresh_rate = mode_info.refresh_rate;
if(0 == refresh_rate)
refresh_rate = 60;
frame_time_in_us = 1000000 / refresh_rate;
pre_vbi_time_in_us = frame_time_in_us - 200 - mode_info.vblank_time_us;
display_gap2 = pre_vbi_time_in_us * (ref_clock / 100);
cgs_write_ind_register(hwmgr->device, CGS_IND_REG__SMC, ixCG_DISPLAY_GAP_CNTL2, display_gap2);
cgs_write_ind_register(hwmgr->device, CGS_IND_REG__SMC, data->soft_regs_start + offsetof(SMU72_SoftRegisters, PreVBlankGap), 0x64);
cgs_write_ind_register(hwmgr->device, CGS_IND_REG__SMC, data->soft_regs_start + offsetof(SMU72_SoftRegisters, VBlankTimeout), (frame_time_in_us - pre_vbi_time_in_us));
if (num_active_displays == 1)
tonga_notify_smc_display_change(hwmgr, true);
return 0;
}
int tonga_display_configuration_changed_task(struct pp_hwmgr *hwmgr)
{
tonga_program_display_gap(hwmgr);
/* to do PhwTonga_CacUpdateDisplayConfiguration(pHwMgr); */
return 0;
}
static const struct pp_hwmgr_func tonga_hwmgr_funcs = {
.backend_init = &tonga_hwmgr_backend_init,
.backend_fini = &tonga_hwmgr_backend_fini,
@ -5694,6 +5783,8 @@ static const struct pp_hwmgr_func tonga_hwmgr_funcs = {
.get_pp_table_entry = tonga_get_pp_table_entry,
.get_num_of_pp_table_entries = tonga_get_number_of_powerplay_table_entries,
.print_current_perforce_level = tonga_print_current_perforce_level,
.notify_smc_display_config_after_ps_adjustment = tonga_notify_smc_display_config_after_ps_adjustment,
.display_config_changed = tonga_display_configuration_changed_task,
};
int tonga_hwmgr_init(struct pp_hwmgr *hwmgr)