diff options
| -rw-r--r-- | drivers/gpu/drm/tegra/dc.c | 27 | ||||
| -rw-r--r-- | drivers/gpu/drm/tegra/dc.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/tegra/rgb.c | 49 |
3 files changed, 65 insertions, 12 deletions
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index e62b091b93f2..a457ee954a49 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -1834,10 +1834,9 @@ int tegra_dc_state_setup_clock(struct tegra_dc *dc, return 0; } -static void tegra_dc_commit_state(struct tegra_dc *dc, - struct tegra_dc_state *state) +static void tegra_dc_set_clock_rate(struct tegra_dc *dc, + struct tegra_dc_state *state) { - u32 value; int err; err = clk_set_parent(dc->clk, state->clk); @@ -1868,11 +1867,6 @@ static void tegra_dc_commit_state(struct tegra_dc *dc, DRM_DEBUG_KMS("rate: %lu, div: %u\n", clk_get_rate(dc->clk), state->div); DRM_DEBUG_KMS("pclk: %lu\n", state->pclk); - - if (!dc->soc->has_nvdisplay) { - value = SHIFT_CLK_DIVIDER(state->div) | PIXEL_CLK_DIVIDER_PCD1; - tegra_dc_writel(dc, value, DC_DISP_DISP_CLOCK_CONTROL); - } } static void tegra_dc_stop(struct tegra_dc *dc) @@ -2074,6 +2068,9 @@ static void tegra_crtc_atomic_enable(struct drm_crtc *crtc, u32 value; int err; + /* apply PLL changes */ + tegra_dc_set_clock_rate(dc, crtc_state); + err = host1x_client_resume(&dc->client); if (err < 0) { dev_err(dc->dev, "failed to resume: %d\n", err); @@ -2148,8 +2145,11 @@ static void tegra_crtc_atomic_enable(struct drm_crtc *crtc, else tegra_dc_writel(dc, 0, DC_DISP_BORDER_COLOR); - /* apply PLL and pixel clock changes */ - tegra_dc_commit_state(dc, crtc_state); + /* apply pixel clock changes */ + if (!dc->soc->has_nvdisplay) { + value = SHIFT_CLK_DIVIDER(crtc_state->div) | PIXEL_CLK_DIVIDER_PCD1; + tegra_dc_writel(dc, value, DC_DISP_DISP_CLOCK_CONTROL); + } /* program display mode */ tegra_dc_set_timings(dc, mode); @@ -2763,6 +2763,7 @@ static const struct tegra_dc_soc_info tegra20_dc_soc_info = { .has_win_b_vfilter_mem_client = true, .has_win_c_without_vert_filter = true, .plane_tiled_memory_bandwidth_x2 = false, + .has_pll_d2_out0 = false, }; static const struct tegra_dc_soc_info tegra30_dc_soc_info = { @@ -2785,6 +2786,7 @@ static const struct tegra_dc_soc_info tegra30_dc_soc_info = { .has_win_b_vfilter_mem_client = true, .has_win_c_without_vert_filter = false, .plane_tiled_memory_bandwidth_x2 = true, + .has_pll_d2_out0 = true, }; static const struct tegra_dc_soc_info tegra114_dc_soc_info = { @@ -2807,6 +2809,7 @@ static const struct tegra_dc_soc_info tegra114_dc_soc_info = { .has_win_b_vfilter_mem_client = false, .has_win_c_without_vert_filter = false, .plane_tiled_memory_bandwidth_x2 = true, + .has_pll_d2_out0 = true, }; static const struct tegra_dc_soc_info tegra124_dc_soc_info = { @@ -2829,6 +2832,7 @@ static const struct tegra_dc_soc_info tegra124_dc_soc_info = { .has_win_b_vfilter_mem_client = false, .has_win_c_without_vert_filter = false, .plane_tiled_memory_bandwidth_x2 = false, + .has_pll_d2_out0 = true, }; static const struct tegra_dc_soc_info tegra210_dc_soc_info = { @@ -2851,6 +2855,7 @@ static const struct tegra_dc_soc_info tegra210_dc_soc_info = { .has_win_b_vfilter_mem_client = false, .has_win_c_without_vert_filter = false, .plane_tiled_memory_bandwidth_x2 = false, + .has_pll_d2_out0 = true, }; static const struct tegra_windowgroup_soc tegra186_dc_wgrps[] = { @@ -2901,6 +2906,7 @@ static const struct tegra_dc_soc_info tegra186_dc_soc_info = { .wgrps = tegra186_dc_wgrps, .num_wgrps = ARRAY_SIZE(tegra186_dc_wgrps), .plane_tiled_memory_bandwidth_x2 = false, + .has_pll_d2_out0 = false, }; static const struct tegra_windowgroup_soc tegra194_dc_wgrps[] = { @@ -2951,6 +2957,7 @@ static const struct tegra_dc_soc_info tegra194_dc_soc_info = { .wgrps = tegra194_dc_wgrps, .num_wgrps = ARRAY_SIZE(tegra194_dc_wgrps), .plane_tiled_memory_bandwidth_x2 = false, + .has_pll_d2_out0 = false, }; static const struct of_device_id tegra_dc_of_match[] = { diff --git a/drivers/gpu/drm/tegra/dc.h b/drivers/gpu/drm/tegra/dc.h index 40378308d527..c9c4c45c0518 100644 --- a/drivers/gpu/drm/tegra/dc.h +++ b/drivers/gpu/drm/tegra/dc.h @@ -76,6 +76,7 @@ struct tegra_dc_soc_info { bool has_win_b_vfilter_mem_client; bool has_win_c_without_vert_filter; bool plane_tiled_memory_bandwidth_x2; + bool has_pll_d2_out0; }; struct tegra_dc { diff --git a/drivers/gpu/drm/tegra/rgb.c b/drivers/gpu/drm/tegra/rgb.c index 933e14e4609f..ff8fce36d2aa 100644 --- a/drivers/gpu/drm/tegra/rgb.c +++ b/drivers/gpu/drm/tegra/rgb.c @@ -17,6 +17,8 @@ struct tegra_rgb { struct tegra_output output; struct tegra_dc *dc; + struct clk *pll_d_out0; + struct clk *pll_d2_out0; struct clk *clk_parent; struct clk *clk; }; @@ -119,6 +121,18 @@ static void tegra_rgb_encoder_enable(struct drm_encoder *encoder) tegra_dc_commit(rgb->dc); } +static bool tegra_rgb_pll_rate_change_allowed(struct tegra_rgb *rgb) +{ + if (!rgb->pll_d2_out0) + return false; + + if (!clk_is_match(rgb->clk_parent, rgb->pll_d_out0) && + !clk_is_match(rgb->clk_parent, rgb->pll_d2_out0)) + return false; + + return true; +} + static int tegra_rgb_encoder_atomic_check(struct drm_encoder *encoder, struct drm_crtc_state *crtc_state, @@ -147,8 +161,17 @@ tegra_rgb_encoder_atomic_check(struct drm_encoder *encoder, * and hope that the desired frequency can be matched (or at least * matched sufficiently close that the panel will still work). */ - div = ((clk_get_rate(rgb->clk) * 2) / pclk) - 2; - pclk = 0; + if (tegra_rgb_pll_rate_change_allowed(rgb)) { + /* + * Set display controller clock to x2 of PCLK in order to + * produce higher resolution pulse positions. + */ + div = 2; + pclk *= 2; + } else { + div = ((clk_get_rate(rgb->clk) * 2) / pclk) - 2; + pclk = 0; + } err = tegra_dc_state_setup_clock(dc, crtc_state, rgb->clk_parent, pclk, div); @@ -206,6 +229,22 @@ int tegra_dc_rgb_probe(struct tegra_dc *dc) return err; } + rgb->pll_d_out0 = clk_get_sys(NULL, "pll_d_out0"); + if (IS_ERR(rgb->pll_d_out0)) { + err = PTR_ERR(rgb->pll_d_out0); + dev_err(dc->dev, "failed to get pll_d_out0: %d\n", err); + return err; + } + + if (dc->soc->has_pll_d2_out0) { + rgb->pll_d2_out0 = clk_get_sys(NULL, "pll_d2_out0"); + if (IS_ERR(rgb->pll_d2_out0)) { + err = PTR_ERR(rgb->pll_d2_out0); + dev_err(dc->dev, "failed to get pll_d2_out0: %d\n", err); + return err; + } + } + dc->rgb = &rgb->output; return 0; @@ -213,9 +252,15 @@ int tegra_dc_rgb_probe(struct tegra_dc *dc) int tegra_dc_rgb_remove(struct tegra_dc *dc) { + struct tegra_rgb *rgb; + if (!dc->rgb) return 0; + rgb = to_rgb(dc->rgb); + clk_put(rgb->pll_d2_out0); + clk_put(rgb->pll_d_out0); + tegra_output_remove(dc->rgb); dc->rgb = NULL; |