diff options
Diffstat (limited to 'drivers/gpu/drm/tegra/dc.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/dc.c | 194 |
1 files changed, 179 insertions, 15 deletions
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index a29d64f87563..eb70eee8992a 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -11,9 +11,12 @@ #include <linux/interconnect.h> #include <linux/module.h> #include <linux/of_device.h> +#include <linux/pm_domain.h> +#include <linux/pm_opp.h> #include <linux/pm_runtime.h> #include <linux/reset.h> +#include <soc/tegra/common.h> #include <soc/tegra/pmc.h> #include <drm/drm_atomic.h> @@ -890,11 +893,9 @@ static int tegra_cursor_atomic_check(struct drm_plane *plane, return 0; } -static void tegra_cursor_atomic_update(struct drm_plane *plane, - struct drm_atomic_state *state) +static void __tegra_cursor_atomic_update(struct drm_plane *plane, + struct drm_plane_state *new_state) { - struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, - plane); struct tegra_plane_state *tegra_plane_state = to_tegra_plane_state(new_state); struct tegra_dc *dc = to_tegra_dc(new_state->crtc); struct tegra_drm *tegra = plane->dev->dev_private; @@ -990,6 +991,14 @@ static void tegra_cursor_atomic_update(struct drm_plane *plane, tegra_dc_writel(dc, value, DC_DISP_CURSOR_POSITION); } +static void tegra_cursor_atomic_update(struct drm_plane *plane, + struct drm_atomic_state *state) +{ + struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane); + + __tegra_cursor_atomic_update(plane, new_state); +} + static void tegra_cursor_atomic_disable(struct drm_plane *plane, struct drm_atomic_state *state) { @@ -1009,12 +1018,78 @@ static void tegra_cursor_atomic_disable(struct drm_plane *plane, tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS); } +static int tegra_cursor_atomic_async_check(struct drm_plane *plane, struct drm_atomic_state *state) +{ + struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane); + struct drm_crtc_state *crtc_state; + int min_scale, max_scale; + int err; + + crtc_state = drm_atomic_get_existing_crtc_state(state, new_state->crtc); + if (WARN_ON(!crtc_state)) + return -EINVAL; + + if (!crtc_state->active) + return -EINVAL; + + if (plane->state->crtc != new_state->crtc || + plane->state->src_w != new_state->src_w || + plane->state->src_h != new_state->src_h || + plane->state->crtc_w != new_state->crtc_w || + plane->state->crtc_h != new_state->crtc_h || + plane->state->fb != new_state->fb || + plane->state->fb == NULL) + return -EINVAL; + + min_scale = (1 << 16) / 8; + max_scale = (8 << 16) / 1; + + err = drm_atomic_helper_check_plane_state(new_state, crtc_state, min_scale, max_scale, + true, true); + if (err < 0) + return err; + + if (new_state->visible != plane->state->visible) + return -EINVAL; + + return 0; +} + +static void tegra_cursor_atomic_async_update(struct drm_plane *plane, + struct drm_atomic_state *state) +{ + struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane); + struct tegra_dc *dc = to_tegra_dc(new_state->crtc); + + plane->state->src_x = new_state->src_x; + plane->state->src_y = new_state->src_y; + plane->state->crtc_x = new_state->crtc_x; + plane->state->crtc_y = new_state->crtc_y; + + if (new_state->visible) { + struct tegra_plane *p = to_tegra_plane(plane); + u32 value; + + __tegra_cursor_atomic_update(plane, new_state); + + value = (WIN_A_ACT_REQ << p->index) << 8 | GENERAL_UPDATE; + tegra_dc_writel(dc, value, DC_CMD_STATE_CONTROL); + (void)tegra_dc_readl(dc, DC_CMD_STATE_CONTROL); + + value = (WIN_A_ACT_REQ << p->index) | GENERAL_ACT_REQ; + tegra_dc_writel(dc, value, DC_CMD_STATE_CONTROL); + (void)tegra_dc_readl(dc, DC_CMD_STATE_CONTROL); + } +} + static const struct drm_plane_helper_funcs tegra_cursor_plane_helper_funcs = { .prepare_fb = tegra_plane_prepare_fb, .cleanup_fb = tegra_plane_cleanup_fb, .atomic_check = tegra_cursor_atomic_check, .atomic_update = tegra_cursor_atomic_update, .atomic_disable = tegra_cursor_atomic_disable, + .atomic_async_check = tegra_cursor_atomic_async_check, + .atomic_async_update = tegra_cursor_atomic_async_update, }; static const uint64_t linear_modifiers[] = { @@ -1267,9 +1342,9 @@ static struct drm_plane *tegra_dc_add_planes(struct drm_device *drm, err = PTR_ERR(planes[i]); while (i--) - tegra_plane_funcs.destroy(planes[i]); + planes[i]->funcs->destroy(planes[i]); - tegra_plane_funcs.destroy(primary); + primary->funcs->destroy(primary); return ERR_PTR(err); } } @@ -1762,10 +1837,55 @@ 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_update_voltage_state(struct tegra_dc *dc, + struct tegra_dc_state *state) +{ + unsigned long rate, pstate; + struct dev_pm_opp *opp; + int err; + + if (!dc->has_opp_table) + return; + + /* calculate actual pixel clock rate which depends on internal divider */ + rate = DIV_ROUND_UP(clk_get_rate(dc->clk) * 2, state->div + 2); + + /* find suitable OPP for the rate */ + opp = dev_pm_opp_find_freq_ceil(dc->dev, &rate); + + /* + * Very high resolution modes may results in a clock rate that is + * above the characterized maximum. In this case it's okay to fall + * back to the characterized maximum. + */ + if (opp == ERR_PTR(-ERANGE)) + opp = dev_pm_opp_find_freq_floor(dc->dev, &rate); + + if (IS_ERR(opp)) { + dev_err(dc->dev, "failed to find OPP for %luHz: %pe\n", + rate, opp); + return; + } + + pstate = dev_pm_opp_get_required_pstate(opp, 0); + dev_pm_opp_put(opp); + + /* + * The minimum core voltage depends on the pixel clock rate (which + * depends on internal clock divider of the CRTC) and not on the + * rate of the display controller clock. This is why we're not using + * dev_pm_opp_set_rate() API and instead controlling the power domain + * directly. + */ + err = dev_pm_genpd_set_performance_state(dc->dev, pstate); + if (err) + dev_err(dc->dev, "failed to set power domain state to %lu: %d\n", + pstate, err); +} + +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); @@ -1797,10 +1917,7 @@ static void tegra_dc_commit_state(struct tegra_dc *dc, 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); - } + tegra_dc_update_voltage_state(dc, state); } static void tegra_dc_stop(struct tegra_dc *dc) @@ -1991,6 +2108,13 @@ static void tegra_crtc_atomic_disable(struct drm_crtc *crtc, err = host1x_client_suspend(&dc->client); if (err < 0) dev_err(dc->dev, "failed to suspend: %d\n", err); + + if (dc->has_opp_table) { + err = dev_pm_genpd_set_performance_state(dc->dev, 0); + if (err) + dev_err(dc->dev, + "failed to clear power domain state: %d\n", err); + } } static void tegra_crtc_atomic_enable(struct drm_crtc *crtc, @@ -2002,6 +2126,9 @@ 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); @@ -2076,8 +2203,11 @@ 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); @@ -2107,6 +2237,12 @@ static void tegra_crtc_atomic_enable(struct drm_crtc *crtc, tegra_dc_writel(dc, value, DC_COM_RG_UNDERFLOW); } + if (dc->rgb) { + /* XXX: parameterize? */ + value = SC0_H_QUALIFIER_NONE | SC1_H_QUALIFIER_NONE; + tegra_dc_writel(dc, value, DC_DISP_SHIFT_CLOCK_OPTIONS); + } + tegra_dc_commit(dc); drm_crtc_vblank_on(crtc); @@ -2685,6 +2821,7 @@ 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 = { @@ -2707,6 +2844,7 @@ 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 = { @@ -2729,6 +2867,7 @@ 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 = { @@ -2751,6 +2890,7 @@ 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 = { @@ -2773,6 +2913,7 @@ 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[] = { @@ -2823,6 +2964,7 @@ 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[] = { @@ -2873,6 +3015,7 @@ 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[] = { @@ -2973,6 +3116,23 @@ static int tegra_dc_couple(struct tegra_dc *dc) return 0; } +static int tegra_dc_init_opp_table(struct tegra_dc *dc) +{ + struct tegra_core_opp_params opp_params = {}; + int err; + + err = devm_tegra_core_dev_init_opp_table(dc->dev, &opp_params); + if (err && err != -ENODEV) + return err; + + if (err) + dc->has_opp_table = false; + else + dc->has_opp_table = true; + + return 0; +} + static int tegra_dc_probe(struct platform_device *pdev) { u64 dma_mask = dma_get_mask(pdev->dev.parent); @@ -3038,6 +3198,10 @@ static int tegra_dc_probe(struct platform_device *pdev) tegra_powergate_power_off(dc->powergate); } + err = tegra_dc_init_opp_table(dc); + if (err < 0) + return err; + dc->regs = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(dc->regs)) return PTR_ERR(dc->regs); |