From: Eric Yang <[email protected]> [Why] Unguarded SMU and CLK IP access cause issue on FPGA
[How] Guard them for FPGA environment Reviewed-by: Sung joon Kim <[email protected]> Acked-by: Tom Chung <[email protected]> Signed-off-by: Eric Yang <[email protected]> --- .../amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c | 12 ++++++++---- .../drm/amd/display/dc/clk_mgr/dcn35/dcn35_smu.c | 15 +++++++++++++++ 2 files changed, 23 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c index 3d1a60cc2908..e1b035380f6a 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c @@ -408,13 +408,12 @@ static void dcn35_dump_clk_registers(struct clk_state_registers_and_bypass *regs struct clk_mgr_dcn35 *clk_mgr) { } -void dcn35_init_clocks(struct clk_mgr *clk_mgr) + +static void init_clk_states(struct clk_mgr *clk_mgr) { uint32_t ref_dtbclk = clk_mgr->clks.ref_dtbclk_khz; - memset(&(clk_mgr->clks), 0, sizeof(struct dc_clocks)); - // Assumption is that boot state always supports pstate clk_mgr->clks.dtbclk_en = true; clk_mgr->clks.ref_dtbclk_khz = ref_dtbclk; // restore ref_dtbclk clk_mgr->clks.p_state_change_support = true; @@ -422,6 +421,11 @@ void dcn35_init_clocks(struct clk_mgr *clk_mgr) clk_mgr->clks.pwr_state = DCN_PWR_STATE_UNKNOWN; clk_mgr->clks.zstate_support = DCN_ZSTATE_SUPPORT_UNKNOWN; } + +void dcn35_init_clocks(struct clk_mgr *clk_mgr) +{ + init_clk_states(clk_mgr); +} static struct clk_bw_params dcn35_bw_params = { .vram_type = Ddr4MemType, .num_channels = 1, @@ -883,7 +887,7 @@ static uint32_t dcn35_get_idle_state(struct clk_mgr *clk_mgr_base) static void dcn35_init_clocks_fpga(struct clk_mgr *clk_mgr) { - dcn35_init_clocks(clk_mgr); + init_clk_states(clk_mgr); /* TODO: Implement the functions and remove the ifndef guard */ } diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_smu.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_smu.c index 6d4a1ffab5ed..a07f7e685d28 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_smu.c +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_smu.c @@ -447,6 +447,9 @@ void dcn35_smu_set_dtbclk(struct clk_mgr_internal *clk_mgr, bool enable) void dcn35_vbios_smu_enable_48mhz_tmdp_refclk_pwrdwn(struct clk_mgr_internal *clk_mgr, bool enable) { + if (!clk_mgr->smu_present) + return; + dcn35_smu_send_msg_with_param( clk_mgr, VBIOSSMC_MSG_EnableTmdp48MHzRefclkPwrDown, @@ -458,6 +461,9 @@ int dcn35_smu_exit_low_power_state(struct clk_mgr_internal *clk_mgr) { int retv; + if (!clk_mgr->smu_present) + return 0; + retv = dcn35_smu_send_msg_with_param( clk_mgr, VBIOSSMC_MSG_DispPsrExit, @@ -470,6 +476,9 @@ int dcn35_smu_get_ips_supported(struct clk_mgr_internal *clk_mgr) { int retv; + if (!clk_mgr->smu_present) + return 0; + retv = dcn35_smu_send_msg_with_param( clk_mgr, VBIOSSMC_MSG_QueryIPS2Support, @@ -481,6 +490,9 @@ int dcn35_smu_get_ips_supported(struct clk_mgr_internal *clk_mgr) void dcn35_smu_write_ips_scratch(struct clk_mgr_internal *clk_mgr, uint32_t param) { + if (!clk_mgr->smu_present) + return; + REG_WRITE(MP1_SMN_C2PMSG_71, param); //smu_print("%s: write_ips_scratch = %x\n", __func__, param); } @@ -489,6 +501,9 @@ uint32_t dcn35_smu_read_ips_scratch(struct clk_mgr_internal *clk_mgr) { uint32_t retv; + if (!clk_mgr->smu_present) + return 0; + retv = REG_READ(MP1_SMN_C2PMSG_71); //smu_print("%s: dcn35_smu_read_ips_scratch = %x\n", __func__, retv); return retv; -- 2.34.1
