From: Jun Lei Date: Thu, 15 Aug 2019 19:22:34 +0000 (-0400) Subject: drm/amd/display: remove hw access from dc_destroy X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=119630061e72e6512ee8911b473cfacb6b211c53;p=linux.git drm/amd/display: remove hw access from dc_destroy [why] dc_destroy should only clean up SW, this is because GPUs may be removed before driver unload, leading to HW to be unavailable. [how] remove GPIO close as part of GPIO destroy, this is unnecessary because GPIO is not shared, and GPIOs are generally closed after being opened Add tracking to HW access during destructor to make future issues easier to pinpoint, and block access to prevent hangs. Signed-off-by: Jun Lei Reviewed-by: Yongqiang Sun Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn10/rv1_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn10/rv1_clk_mgr.c index 47f529ce280ae..5b3d36d418228 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn10/rv1_clk_mgr.c +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn10/rv1_clk_mgr.c @@ -139,6 +139,9 @@ static void rv1_update_clocks(struct clk_mgr *clk_mgr_base, ASSERT(clk_mgr->pp_smu); + if (dc->work_arounds.skip_clock_update) + return; + pp_smu = &clk_mgr->pp_smu->rv_funcs; display_count = clk_mgr_helper_get_active_display_cnt(dc, context); diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index bd39f100a8a74..d54f5b956809a 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -1886,6 +1886,7 @@ static void commit_planes_do_stream_update(struct dc *dc, struct dc_state *context) { int j; + bool should_program_abm; // Stream updates for (j = 0; j < dc->res_pool->pipe_count; j++) { @@ -1966,14 +1967,21 @@ static void commit_planes_do_stream_update(struct dc *dc, } if (stream_update->abm_level && pipe_ctx->stream_res.abm) { - if (pipe_ctx->stream_res.tg->funcs->is_blanked) { - // if otg funcs defined check if blanked before programming - if (!pipe_ctx->stream_res.tg->funcs->is_blanked(pipe_ctx->stream_res.tg)) + should_program_abm = true; + + // if otg funcs defined check if blanked before programming + if (pipe_ctx->stream_res.tg->funcs->is_blanked) + if (pipe_ctx->stream_res.tg->funcs->is_blanked(pipe_ctx->stream_res.tg)) + should_program_abm = false; + + if (should_program_abm) { + if (*stream_update->abm_level == ABM_LEVEL_IMMEDIATE_DISABLE) { + pipe_ctx->stream_res.abm->funcs->set_abm_immediate_disable(pipe_ctx->stream_res.abm); + } else { pipe_ctx->stream_res.abm->funcs->set_abm_level( pipe_ctx->stream_res.abm, stream->abm_level); - } else - pipe_ctx->stream_res.abm->funcs->set_abm_level( - pipe_ctx->stream_res.abm, stream->abm_level); + } + } } } } diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index 1ef2339824487..40fe54c608799 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -79,7 +79,6 @@ static void destruct(struct dc_link *link) int i; if (link->hpd_gpio != NULL) { - dal_gpio_close(link->hpd_gpio); dal_gpio_destroy_irq(&link->hpd_gpio); link->hpd_gpio = NULL; } diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index 5cb63f0de989b..3b848d4aca8ca 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -117,13 +117,13 @@ struct dc_caps { struct dc_plane_cap planes[MAX_PLANES]; }; -#if defined(CONFIG_DRM_AMD_DC_DCN2_0) struct dc_bug_wa { +#if defined(CONFIG_DRM_AMD_DC_DCN2_0) bool no_connect_phy_config; bool dedcn20_305_wa; +#endif bool skip_clock_update; }; -#endif struct dc_dcc_surface_param { struct dc_size surface_size; @@ -463,9 +463,7 @@ struct dc { struct dc_config config; struct dc_debug_options debug; struct dc_bounding_box_overrides bb_overrides; -#if defined(CONFIG_DRM_AMD_DC_DCN2_0) struct dc_bug_wa work_arounds; -#endif struct dc_context *ctx; #ifdef CONFIG_DRM_AMD_DC_DCN2_0 struct dc_phy_addr_space_config vm_pa_config; diff --git a/drivers/gpu/drm/amd/display/dc/dc_stream.h b/drivers/gpu/drm/amd/display/dc/dc_stream.h index e2d9e11be4b0e..3c061d4f214fe 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_stream.h +++ b/drivers/gpu/drm/amd/display/dc/dc_stream.h @@ -232,6 +232,8 @@ struct dc_stream_state { union stream_update_flags update_flags; }; +#define ABM_LEVEL_IMMEDIATE_DISABLE 0xFFFFFFFF + struct dc_stream_update { struct dc_stream_state *stream; diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c b/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c index 58bd131d5b484..9edd369c12206 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c @@ -489,9 +489,6 @@ void dce_abm_destroy(struct abm **abm) { struct dce_abm *abm_dce = TO_DCE_ABM(*abm); - if (abm_dce->base.dmcu_is_running == true) - abm_dce->base.funcs->set_abm_immediate_disable(*abm); - kfree(abm_dce); *abm = NULL; } diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_dmcu.c b/drivers/gpu/drm/amd/display/dc/dce/dce_dmcu.c index 0b86cee4876f4..ba995d3f23182 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_dmcu.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_dmcu.c @@ -907,9 +907,6 @@ void dce_dmcu_destroy(struct dmcu **dmcu) { struct dce_dmcu *dmcu_dce = TO_DCE_DMCU(*dmcu); - if (dmcu_dce->base.dmcu_state == DMCU_RUNNING) - dmcu_dce->base.funcs->set_psr_enable(*dmcu, false, true); - kfree(dmcu_dce); *dmcu = NULL; } diff --git a/drivers/gpu/drm/amd/display/dc/gpio/gpio_base.c b/drivers/gpu/drm/amd/display/dc/gpio/gpio_base.c index f8f85490e77e2..f67c18375bfdb 100644 --- a/drivers/gpu/drm/amd/display/dc/gpio/gpio_base.c +++ b/drivers/gpu/drm/amd/display/dc/gpio/gpio_base.c @@ -321,8 +321,6 @@ void dal_gpio_destroy( return; } - dal_gpio_close(*gpio); - switch ((*gpio)->id) { case GPIO_ID_DDC_DATA: kfree((*gpio)->hw_container.ddc); diff --git a/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c b/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c index d03165e71dc65..92280cc05e2db 100644 --- a/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c +++ b/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c @@ -169,7 +169,6 @@ void dal_gpio_destroy_generic_mux( return; } - dal_gpio_close(*mux); dal_gpio_destroy(mux); kfree(*mux); @@ -460,7 +459,6 @@ void dal_gpio_destroy_irq( return; } - dal_gpio_close(*irq); dal_gpio_destroy(irq); kfree(*irq);