diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dccg.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dccg.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dccg.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dccg.c index 696c9307715d..9896adf67425 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dccg.c +++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dccg.c @@ -42,6 +42,155 @@ #define DC_LOGGER \ dccg->ctx->logger +void dccg31_set_dpstreamclk( + struct dccg *dccg, + enum hdmistreamclk_source src, + int otg_inst) +{ + struct dcn_dccg *dccg_dcn = TO_DCN_DCCG(dccg); + + /* enabled to select one of the DTBCLKs for pipe */ + switch (otg_inst) { + case 0: + REG_UPDATE(DPSTREAMCLK_CNTL, + DPSTREAMCLK_PIPE0_EN, (src == REFCLK) ? 0 : 1); + break; + case 1: + REG_UPDATE(DPSTREAMCLK_CNTL, + DPSTREAMCLK_PIPE1_EN, (src == REFCLK) ? 0 : 1); + break; + case 2: + REG_UPDATE(DPSTREAMCLK_CNTL, + DPSTREAMCLK_PIPE2_EN, (src == REFCLK) ? 0 : 1); + break; + case 3: + REG_UPDATE(DPSTREAMCLK_CNTL, + DPSTREAMCLK_PIPE3_EN, (src == REFCLK) ? 0 : 1); + break; + default: + BREAK_TO_DEBUGGER(); + return; + } +} + +void dccg31_enable_symclk32_se( + struct dccg *dccg, + int hpo_se_inst, + enum phyd32clk_clock_source phyd32clk) +{ + struct dcn_dccg *dccg_dcn = TO_DCN_DCCG(dccg); + + /* select one of the PHYD32CLKs as the source for symclk32_se */ + switch (hpo_se_inst) { + case 0: + REG_UPDATE_2(SYMCLK32_SE_CNTL, + SYMCLK32_SE0_SRC_SEL, phyd32clk, + SYMCLK32_SE0_EN, 1); + break; + case 1: + REG_UPDATE_2(SYMCLK32_SE_CNTL, + SYMCLK32_SE1_SRC_SEL, phyd32clk, + SYMCLK32_SE1_EN, 1); + break; + case 2: + REG_UPDATE_2(SYMCLK32_SE_CNTL, + SYMCLK32_SE2_SRC_SEL, phyd32clk, + SYMCLK32_SE2_EN, 1); + break; + case 3: + REG_UPDATE_2(SYMCLK32_SE_CNTL, + SYMCLK32_SE3_SRC_SEL, phyd32clk, + SYMCLK32_SE3_EN, 1); + break; + default: + BREAK_TO_DEBUGGER(); + return; + } +} + +void dccg31_disable_symclk32_se( + struct dccg *dccg, + int hpo_se_inst) +{ + struct dcn_dccg *dccg_dcn = TO_DCN_DCCG(dccg); + + /* set refclk as the source for symclk32_se */ + switch (hpo_se_inst) { + case 0: + REG_UPDATE_2(SYMCLK32_SE_CNTL, + SYMCLK32_SE0_SRC_SEL, 0, + SYMCLK32_SE0_EN, 0); + break; + case 1: + REG_UPDATE_2(SYMCLK32_SE_CNTL, + SYMCLK32_SE1_SRC_SEL, 0, + SYMCLK32_SE1_EN, 0); + break; + case 2: + REG_UPDATE_2(SYMCLK32_SE_CNTL, + SYMCLK32_SE2_SRC_SEL, 0, + SYMCLK32_SE2_EN, 0); + break; + case 3: + REG_UPDATE_2(SYMCLK32_SE_CNTL, + SYMCLK32_SE3_SRC_SEL, 0, + SYMCLK32_SE3_EN, 0); + break; + default: + BREAK_TO_DEBUGGER(); + return; + } +} + +void dccg31_enable_symclk32_le( + struct dccg *dccg, + int hpo_le_inst, + enum phyd32clk_clock_source phyd32clk) +{ + struct dcn_dccg *dccg_dcn = TO_DCN_DCCG(dccg); + + /* select one of the PHYD32CLKs as the source for symclk32_le */ + switch (hpo_le_inst) { + case 0: + REG_UPDATE_2(SYMCLK32_LE_CNTL, + SYMCLK32_LE0_SRC_SEL, phyd32clk, + SYMCLK32_LE0_EN, 1); + break; + case 1: + REG_UPDATE_2(SYMCLK32_LE_CNTL, + SYMCLK32_LE1_SRC_SEL, phyd32clk, + SYMCLK32_LE1_EN, 1); + break; + default: + BREAK_TO_DEBUGGER(); + return; + } +} + +void dccg31_disable_symclk32_le( + struct dccg *dccg, + int hpo_le_inst) +{ + struct dcn_dccg *dccg_dcn = TO_DCN_DCCG(dccg); + + /* set refclk as the source for symclk32_le */ + switch (hpo_le_inst) { + case 0: + REG_UPDATE_2(SYMCLK32_LE_CNTL, + SYMCLK32_LE0_SRC_SEL, 0, + SYMCLK32_LE0_EN, 0); + break; + case 1: + REG_UPDATE_2(SYMCLK32_LE_CNTL, + SYMCLK32_LE1_SRC_SEL, 0, + SYMCLK32_LE1_EN, 0); + break; + default: + BREAK_TO_DEBUGGER(); + return; + } +} + void dccg31_set_physymclk( struct dccg *dccg, int phy_inst, @@ -241,12 +390,25 @@ static void dccg31_set_dispclk_change_mode( void dccg31_init(struct dccg *dccg) { + /* Set HPO stream encoder to use refclk to avoid case where PHY is + * disabled and SYMCLK32 for HPO SE is sourced from PHYD32CLK which + * will cause DCN to hang. + */ + dccg31_disable_symclk32_se(dccg, 0); + dccg31_disable_symclk32_se(dccg, 1); + dccg31_disable_symclk32_se(dccg, 2); + dccg31_disable_symclk32_se(dccg, 3); } static const struct dccg_funcs dccg31_funcs = { .update_dpp_dto = dccg2_update_dpp_dto, .get_dccg_ref_freq = dccg31_get_dccg_ref_freq, .dccg_init = dccg31_init, + .set_dpstreamclk = dccg31_set_dpstreamclk, + .enable_symclk32_se = dccg31_enable_symclk32_se, + .disable_symclk32_se = dccg31_disable_symclk32_se, + .enable_symclk32_le = dccg31_enable_symclk32_le, + .disable_symclk32_le = dccg31_disable_symclk32_le, .set_physymclk = dccg31_set_physymclk, .set_dtbclk_dto = dccg31_set_dtbclk_dto, .set_audio_dtbclk_dto = dccg31_set_audio_dtbclk_dto, |