diff options
| -rw-r--r-- | drivers/gpu/drm/tegra/dc.c | 141 | ||||
| -rw-r--r-- | drivers/gpu/drm/tegra/dpaux.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/tegra/drm.h | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/tegra/dsi.c | 175 | ||||
| -rw-r--r-- | drivers/gpu/drm/tegra/hdmi.c | 116 | ||||
| -rw-r--r-- | drivers/gpu/drm/tegra/hub.c | 194 | ||||
| -rw-r--r-- | drivers/gpu/drm/tegra/hub.h | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/tegra/sor.c | 154 | ||||
| -rw-r--r-- | drivers/gpu/host1x/bus.c | 75 | ||||
| -rw-r--r-- | include/linux/host1x.h | 11 |
10 files changed, 541 insertions, 331 deletions
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index 471bdf504df1..7c70fd31a4c2 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -1727,6 +1727,7 @@ static void tegra_crtc_atomic_disable(struct drm_crtc *crtc, { struct tegra_dc *dc = to_tegra_dc(crtc); u32 value; + int err; if (!tegra_dc_idle(dc)) { tegra_dc_stop(dc); @@ -1773,7 +1774,9 @@ static void tegra_crtc_atomic_disable(struct drm_crtc *crtc, spin_unlock_irq(&crtc->dev->event_lock); - pm_runtime_put_sync(dc->dev); + err = host1x_client_suspend(&dc->client); + if (err < 0) + dev_err(dc->dev, "failed to suspend: %d\n", err); } static void tegra_crtc_atomic_enable(struct drm_crtc *crtc, @@ -1783,8 +1786,13 @@ static void tegra_crtc_atomic_enable(struct drm_crtc *crtc, struct tegra_dc_state *state = to_dc_state(crtc->state); struct tegra_dc *dc = to_tegra_dc(crtc); u32 value; + int err; - pm_runtime_get_sync(dc->dev); + err = host1x_client_resume(&dc->client); + if (err < 0) { + dev_err(dc->dev, "failed to resume: %d\n", err); + return; + } /* initialize display controller */ if (dc->syncpt) { @@ -2012,6 +2020,15 @@ static int tegra_dc_init(struct host1x_client *client) if (!tegra_dc_has_window_groups(dc)) return 0; + /* + * Set the display hub as the host1x client parent for the display + * controller. This is needed for the runtime reference counting that + * ensures the display hub is always powered when any of the display + * controllers are. + */ + if (dc->soc->has_nvdisplay) + client->parent = &tegra->hub->client; + dc->syncpt = host1x_syncpt_request(client, flags); if (!dc->syncpt) dev_warn(dc->dev, "failed to allocate syncpoint\n"); @@ -2121,9 +2138,74 @@ static int tegra_dc_exit(struct host1x_client *client) return 0; } +static int tegra_dc_runtime_suspend(struct host1x_client *client) +{ + struct tegra_dc *dc = host1x_client_to_dc(client); + struct device *dev = client->dev; + int err; + + err = reset_control_assert(dc->rst); + if (err < 0) { + dev_err(dev, "failed to assert reset: %d\n", err); + return err; + } + + if (dc->soc->has_powergate) + tegra_powergate_power_off(dc->powergate); + + clk_disable_unprepare(dc->clk); + pm_runtime_put_sync(dev); + + return 0; +} + +static int tegra_dc_runtime_resume(struct host1x_client *client) +{ + struct tegra_dc *dc = host1x_client_to_dc(client); + struct device *dev = client->dev; + int err; + + err = pm_runtime_get_sync(dev); + if (err < 0) { + dev_err(dev, "failed to get runtime PM: %d\n", err); + return err; + } + + if (dc->soc->has_powergate) { + err = tegra_powergate_sequence_power_up(dc->powergate, dc->clk, + dc->rst); + if (err < 0) { + dev_err(dev, "failed to power partition: %d\n", err); + goto put_rpm; + } + } else { + err = clk_prepare_enable(dc->clk); + if (err < 0) { + dev_err(dev, "failed to enable clock: %d\n", err); + goto put_rpm; + } + + err = reset_control_deassert(dc->rst); + if (err < 0) { + dev_err(dev, "failed to deassert reset: %d\n", err); + goto disable_clk; + } + } + + return 0; + +disable_clk: + clk_disable_unprepare(dc->clk); +put_rpm: + pm_runtime_put_sync(dev); + return err; +} + static const struct host1x_client_ops dc_client_ops = { .init = tegra_dc_init, .exit = tegra_dc_exit, + .suspend = tegra_dc_runtime_suspend, + .resume = tegra_dc_runtime_resume, }; static const struct tegra_dc_soc_info tegra20_dc_soc_info = { @@ -2535,65 +2617,10 @@ static int tegra_dc_remove(struct platform_device *pdev) return 0; } -#ifdef CONFIG_PM -static int tegra_dc_suspend(struct device *dev) -{ - struct tegra_dc *dc = dev_get_drvdata(dev); - int err; - - err = reset_control_assert(dc->rst); - if (err < 0) { - dev_err(dev, "failed to assert reset: %d\n", err); - return err; - } - - if (dc->soc->has_powergate) - tegra_powergate_power_off(dc->powergate); - - clk_disable_unprepare(dc->clk); - - return 0; -} - -static int tegra_dc_resume(struct device *dev) -{ - struct tegra_dc *dc = dev_get_drvdata(dev); - int err; - - if (dc->soc->has_powergate) { - err = tegra_powergate_sequence_power_up(dc->powergate, dc->clk, - dc->rst); - if (err < 0) { - dev_err(dev, "failed to power partition: %d\n", err); - return err; - } - } else { - err = clk_prepare_enable(dc->clk); - if (err < 0) { - dev_err(dev, "failed to enable clock: %d\n", err); - return err; - } - - err = reset_control_deassert(dc->rst); - if (err < 0) { - dev_err(dev, "failed to deassert reset: %d\n", err); - return err; - } - } - - return 0; -} -#endif - -static const struct dev_pm_ops tegra_dc_pm_ops = { - SET_RUNTIME_PM_OPS(tegra_dc_suspend, tegra_dc_resume, NULL) -}; - struct platform_driver tegra_dc_driver = { .driver = { .name = "tegra-dc", .of_match_table = tegra_dc_of_match, - .pm = &tegra_dc_pm_ops, }, .probe = tegra_dc_probe, .remove = tegra_dc_remove, diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c index 622cdf1ad246..7dfb50f65067 100644 --- a/drivers/gpu/drm/tegra/dpaux.c +++ b/drivers/gpu/drm/tegra/dpaux.c @@ -588,7 +588,7 @@ static int tegra_dpaux_remove(struct platform_device *pdev) /* make sure pads are powered down when not in use */ tegra_dpaux_pad_power_down(dpaux); - pm_runtime_put(&pdev->dev); + pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); drm_dp_aux_unregister(&dpaux->aux); diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h index d941553f7a3d..ed99b67deb29 100644 --- a/drivers/gpu/drm/tegra/drm.h +++ b/drivers/gpu/drm/tegra/drm.h @@ -144,6 +144,8 @@ int tegra_output_init(struct drm_device *drm, struct tegra_output *output); void tegra_output_exit(struct tegra_output *output); void tegra_output_find_possible_crtcs(struct tegra_output *output, struct drm_device *drm); +int tegra_output_suspend(struct tegra_output *output); +int tegra_output_resume(struct tegra_output *output); int tegra_output_connector_get_modes(struct drm_connector *connector); enum drm_connector_status diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c index ec475d022fa0..88b9d64c77bf 100644 --- a/drivers/gpu/drm/tegra/dsi.c +++ b/drivers/gpu/drm/tegra/dsi.c @@ -840,7 +840,9 @@ static void tegra_dsi_unprepare(struct tegra_dsi *dsi) dev_err(dsi->dev, "failed to disable MIPI calibration: %d\n", err); - pm_runtime_put(dsi->dev); + err = host1x_client_suspend(&dsi->client); + if (err < 0) + dev_err(dsi->dev, "failed to suspend: %d\n", err); } static void tegra_dsi_encoder_disable(struct drm_encoder *encoder) @@ -882,11 +884,15 @@ static void tegra_dsi_encoder_disable(struct drm_encoder *encoder) tegra_dsi_unprepare(dsi); } -static void tegra_dsi_prepare(struct tegra_dsi *dsi) +static int tegra_dsi_prepare(struct tegra_dsi *dsi) { int err; - pm_runtime_get_sync(dsi->dev); + err = host1x_client_resume(&dsi->client); + if (err < 0) { + dev_err(dsi->dev, "failed to resume: %d\n", err); + return err; + } err = tegra_mipi_enable(dsi->mipi); if (err < 0) @@ -899,6 +905,8 @@ static void tegra_dsi_prepare(struct tegra_dsi *dsi) if (dsi->slave) tegra_dsi_prepare(dsi->slave); + + return 0; } static void tegra_dsi_encoder_enable(struct drm_encoder *encoder) @@ -909,8 +917,13 @@ static void tegra_dsi_encoder_enable(struct drm_encoder *encoder) struct tegra_dsi *dsi = to_dsi(output); struct tegra_dsi_state *state; u32 value; + int err; - tegra_dsi_prepare(dsi); + err = tegra_dsi_prepare(dsi); + if (err < 0) { + dev_err(dsi->dev, "failed to prepare: %d\n", err); + return; + } state = tegra_dsi_get_state(dsi); @@ -1075,9 +1088,89 @@ static int tegra_dsi_exit(struct host1x_client *client) return 0; } +static int tegra_dsi_runtime_suspend(struct host1x_client *client) +{ + struct tegra_dsi *dsi = host1x_client_to_dsi(client); + struct device *dev = client->dev; + int err; + + if (dsi->rst) { + err = reset_control_assert(dsi->rst); + if (err < 0) { + dev_err(dev, "failed to assert reset: %d\n", err); + return err; + } + } + + usleep_range(1000, 2000); + + clk_disable_unprepare(dsi->clk_lp); + clk_disable_unprepare(dsi->clk); + + regulator_disable(dsi->vdd); + pm_runtime_put_sync(dev); + + return 0; +} + +static int tegra_dsi_runtime_resume(struct host1x_client *client) +{ + struct tegra_dsi *dsi = host1x_client_to_dsi(client); + struct device *dev = client->dev; + int err; + + err = pm_runtime_get_sync(dev); + if (err < 0) { + dev_err(dev, "failed to get runtime PM: %d\n", err); + return err; + } + + err = regulator_enable(dsi->vdd); + if (err < 0) { + dev_err(dev, "failed to enable VDD supply: %d\n", err); + goto put_rpm; + } + + err = clk_prepare_enable(dsi->clk); + if (err < 0) { + dev_err(dev, "cannot enable DSI clock: %d\n", err); + goto disable_vdd; + } + + err = clk_prepare_enable(dsi->clk_lp); + if (err < 0) { + dev_err(dev, "cannot enable low-power clock: %d\n", err); + goto disable_clk; + } + + usleep_range(1000, 2000); + + if (dsi->rst) { + err = reset_control_deassert(dsi->rst); + if (err < 0) { + dev_err(dev, "cannot assert reset: %d\n", err); + goto disable_clk_lp; + } + } + + return 0; + +disable_clk_lp: + clk_disable_unprepare(dsi->clk_lp); +disable_clk: + clk_disable_unprepare(dsi->clk); +disable_vdd: + regulator_disable(dsi->vdd); +put_rpm: + pm_runtime_put_sync(dev); + return err; +} + static const struct host1x_client_ops dsi_client_ops = { .init = tegra_dsi_init, .exit = tegra_dsi_exit, + .suspend = tegra_dsi_runtime_suspend, + .resume = tegra_dsi_runtime_resume, }; static int tegra_dsi_setup_clocks(struct tegra_dsi *dsi) @@ -1596,79 +1689,6 @@ static int tegra_dsi_remove(struct platform_device *pdev) return 0; } -#ifdef CONFIG_PM -static int tegra_dsi_suspend(struct device *dev) -{ - struct tegra_dsi *dsi = dev_get_drvdata(dev); - int err; - - if (dsi->rst) { - err = reset_control_assert(dsi->rst); - if (err < 0) { - dev_err(dev, "failed to assert reset: %d\n", err); - return err; - } - } - - usleep_range(1000, 2000); - - clk_disable_unprepare(dsi->clk_lp); - clk_disable_unprepare(dsi->clk); - - regulator_disable(dsi->vdd); - - return 0; -} - -static int tegra_dsi_resume(struct device *dev) -{ - struct tegra_dsi *dsi = dev_get_drvdata(dev); - int err; - - err = regulator_enable(dsi->vdd); - if (err < 0) { - dev_err(dsi->dev, "failed to enable VDD supply: %d\n", err); - return err; - } - - err = clk_prepare_enable(dsi->clk); - if (err < 0) { - dev_err(dev, "cannot enable DSI clock: %d\n", err); - goto disable_vdd; - } - - err = clk_prepare_enable(dsi->clk_lp); - if (err < 0) { - dev_err(dev, "cannot enable low-power clock: %d\n", err); - goto disable_clk; - } - - usleep_range(1000, 2000); - - if (dsi->rst) { - err = reset_control_deassert(dsi->rst); - if (err < 0) { - dev_err(dev, "cannot assert reset: %d\n", err); - goto disable_clk_lp; - } - } - - return 0; - -disable_clk_lp: - clk_disable_unprepare(dsi->clk_lp); -disable_clk: - clk_disable_unprepare(dsi->clk); -disable_vdd: - regulator_disable(dsi->vdd); - return err; -} -#endif - -static const struct dev_pm_ops tegra_dsi_pm_ops = { - SET_RUNTIME_PM_OPS(tegra_dsi_suspend, tegra_dsi_resume, NULL) -}; - static const struct of_device_id tegra_dsi_of_match[] = { { .compatible = "nvidia,tegra210-dsi", }, { .compatible = "nvidia,tegra132-dsi", }, @@ -1682,7 +1702,6 @@ struct platform_driver tegra_dsi_driver = { .driver = { .name = "tegra-dsi", .of_match_table = tegra_dsi_of_match, - .pm = &tegra_dsi_pm_ops, }, .probe = tegra_dsi_probe, .remove = tegra_dsi_remove, diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c index 38bf1d16095f..cb504ec8f284 100644 --- a/drivers/gpu/drm/tegra/hdmi.c +++ b/drivers/gpu/drm/tegra/hdmi.c @@ -1146,6 +1146,7 @@ static void tegra_hdmi_encoder_disable(struct drm_encoder *encoder) struct tegra_dc *dc = to_tegra_dc(encoder->crtc); struct tegra_hdmi *hdmi = to_hdmi(output); u32 value; + int err; /* * The following accesses registers of the display controller, so make @@ -1171,7 +1172,9 @@ static void tegra_hdmi_encoder_disable(struct drm_encoder *encoder) tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_INT_ENABLE); tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_INT_MASK); - pm_runtime_put(hdmi->dev); + err = host1x_client_suspend(&hdmi->client); + if (err < 0) + dev_err(hdmi->dev, "failed to suspend: %d\n", err); } static void tegra_hdmi_encoder_enable(struct drm_encoder *encoder) @@ -1186,7 +1189,11 @@ static void tegra_hdmi_encoder_enable(struct drm_encoder *encoder) u32 value; int err; - pm_runtime_get_sync(hdmi->dev); + err = host1x_client_resume(&hdmi->client); + if (err < 0) { + dev_err(hdmi->dev, "failed to resume: %d\n", err); + return; + } /* * Enable and unmask the HDA codec SCRATCH0 register interrupt. This @@ -1489,9 +1496,66 @@ static int tegra_hdmi_exit(struct host1x_client *client) return 0; } +static int tegra_hdmi_runtime_suspend(struct host1x_client *client) +{ + struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client); + struct device *dev = client->dev; + int err; + + err = reset_control_assert(hdmi->rst); + if (err < 0) { + dev_err(dev, "failed to assert reset: %d\n", err); + return err; + } + + usleep_range(1000, 2000); + + clk_disable_unprepare(hdmi->clk); + pm_runtime_put_sync(dev); + + return 0; +} + +static int tegra_hdmi_runtime_resume(struct host1x_client *client) +{ + struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client); + struct device *dev = client->dev; + int err; + + err = pm_runtime_get_sync(dev); + if (err < 0) { + dev_err(dev, "failed to get runtime PM: %d\n", err); + return err; + } + + err = clk_prepare_enable(hdmi->clk); + if (err < 0) { + dev_err(dev, "failed to enable clock: %d\n", err); + goto put_rpm; + } + + usleep_range(1000, 2000); + + err = reset_control_deassert(hdmi->rst); + if (err < 0) { + dev_err(dev, "failed to deassert reset: %d\n", err); + goto disable_clk; + } + + return 0; + +disable_clk: + clk_disable_unprepare(hdmi->clk); +put_rpm: + pm_runtime_put_sync(dev); + return err; +} + static const struct host1x_client_ops hdmi_client_ops = { .init = tegra_hdmi_init, .exit = tegra_hdmi_exit, + .suspend = tegra_hdmi_runtime_suspend, + .resume = tegra_hdmi_runtime_resume, }; static const struct tegra_hdmi_config tegra20_hdmi_config = { @@ -1699,58 +1763,10 @@ static int tegra_hdmi_remove(struct platform_device *pdev) return 0; } -#ifdef CONFIG_PM -static int tegra_hdmi_suspend(struct device *dev) -{ - struct tegra_hdmi *hdmi = dev_get_drvdata(dev); - int err; - - err = reset_control_assert(hdmi->rst); - if (err < 0) { - dev_err(dev, "failed to assert reset: %d\n", err); - return err; - } - - usleep_range(1000, 2000); - - clk_disable_unprepare(hdmi->clk); - - return 0; -} - -static int tegra_hdmi_resume(struct device *dev) -{ - struct tegra_hdmi *hdmi = dev_get_drvdata(dev); - int err; - - err = clk_prepare_enable(hdmi->clk); - if (err < 0) { - dev_err(dev, "failed to enable clock: %d\n", err); - return err; - } - - usleep_range(1000, 2000); - - err = reset_control_deassert(hdmi->rst); - if (err < 0) { - dev_err(dev, "failed to deassert reset: %d\n", err); - clk_disable_unprepare(hdmi->clk); - return err; - } - - return 0; -} -#endif - -static const struct dev_pm_ops tegra_hdmi_pm_ops = { - SET_RUNTIME_PM_OPS(tegra_hdmi_suspend, tegra_hdmi_resume, NULL) -}; - struct platform_driver tegra_hdmi_driver = { .driver = { .name = "tegra-hdmi", .of_match_table = tegra_hdmi_of_match, - .pm = &tegra_hdmi_pm_ops, }, .probe = tegra_hdmi_probe, .remove = tegra_hdmi_remove, diff --git a/drivers/gpu/drm/tegra/hub.c b/drivers/gpu/drm/tegra/hub.c index 7d9e1309be3b..8183e617bf6b 100644 --- a/drivers/gpu/drm/tegra/hub.c +++ b/drivers/gpu/drm/tegra/hub.c @@ -95,17 +95,25 @@ static inline void tegra_plane_writel(struct tegra_plane *plane, u32 value, static int tegra_windowgroup_enable(struct tegra_windowgroup *wgrp) { + int err = 0; + mutex_lock(&wgrp->lock); if (wgrp->usecount == 0) { - pm_runtime_get_sync(wgrp->parent); + err = host1x_client_resume(wgrp->parent); + if (err < 0) { + dev_err(wgrp->parent->dev, "failed to resume: %d\n", err); + goto unlock; + } + reset_control_deassert(wgrp->rst); } wgrp->usecount++; - mutex_unlock(&wgrp->lock); - return 0; +unlock: + mutex_unlock(&wgrp->lock); + return err; } static void tegra_windowgroup_disable(struct tegra_windowgroup *wgrp) @@ -121,7 +129,7 @@ static void tegra_windowgroup_disable(struct tegra_windowgroup *wgrp) wgrp->index); } - pm_runtime_put(wgrp->parent); + host1x_client_suspend(wgrp->parent); } wgrp->usecount--; @@ -379,6 +387,7 @@ static void tegra_shared_plane_atomic_disable(struct drm_plane *plane, struct tegra_plane *p = to_tegra_plane(plane); struct tegra_dc *dc; u32 value; + int err; /* rien ne va plus */ if (!old_state || !old_state->crtc) @@ -386,6 +395,12 @@ static void tegra_shared_plane_atomic_disable(struct drm_plane *plane, dc = to_tegra_dc(old_state->crtc); + err = host1x_client_resume(&dc->client); + if (err < 0) { + dev_err(dc->dev, "failed to resume: %d\n", err); + return; + } + /* * XXX Legacy helpers seem to sometimes call ->atomic_disable() even * on planes that are already disabled. Make sure we fallback to the @@ -394,15 +409,13 @@ static void tegra_shared_plane_atomic_disable(struct drm_plane *plane, if (WARN_ON(p->dc == NULL)) p->dc = dc; - pm_runtime_get_sync(dc->dev); - value = tegra_plane_readl(p, DC_WIN_WIN_OPTIONS); value &= ~WIN_ENABLE; tegra_plane_writel(p, value, DC_WIN_WIN_OPTIONS); tegra_dc_remove_shared_plane(dc, p); - pm_runtime_put(dc->dev); + host1x_client_suspend(&dc->client); } static void tegra_shared_plane_atomic_update(struct drm_plane *plane, @@ -415,6 +428,7 @@ static void tegra_shared_plane_atomic_update(struct drm_plane *plane, struct tegra_plane *p = to_tegra_plane(plane); dma_addr_t base; u32 value; + int err; /* rien ne va plus */ if (!plane->state->crtc || !plane->state->fb) @@ -425,7 +439,11 @@ static void tegra_shared_plane_atomic_update(struct drm_plane *plane, return; } - pm_runtime_get_sync(dc->dev); + err = host1x_client_resume(&dc->client); + if (err < 0) { + dev_err(dc->dev, "failed to resume: %d\n", err); + return; + } tegra_dc_assign_shared_plane(dc, p); @@ -515,7 +533,7 @@ static void tegra_shared_plane_atomic_update(struct drm_plane *plane, value &= ~CONTROL_CSC_ENABLE; tegra_plane_writel(p, value, DC_WIN_WINDOW_SET_CONTROL); - pm_runtime_put(dc->dev); + host1x_client_suspend(&dc->client); } static const struct drm_plane_helper_funcs tegra_shared_plane_helper_funcs = { @@ -551,7 +569,7 @@ struct drm_plane *tegra_shared_plane_create(struct drm_device *drm, plane->base.index = index; plane->wgrp = &hub->wgrps[wgrp]; - plane->wgrp->parent = dc->dev; + plane->wgrp->parent = &dc->client; p = &plane->base.base; @@ -656,8 +674,13 @@ int tegra_display_hub_atomic_check(struct drm_device *drm, static void tegra_display_hub_update(struct tegra_dc *dc) { u32 value; + int err; - pm_runtime_get_sync(dc->dev); + err = host1x_client_resume(&dc->client); + if (err < 0) { + dev_err(dc->dev, "failed to resume: %d\n", err); + return; + } value = tegra_dc_readl(dc, DC_CMD_IHUB_COMMON_MISC_CTL); value &= ~LATENCY_EVENT; @@ -672,7 +695,7 @@ static void tegra_display_hub_update(struct tegra_dc *dc) tegra_dc_writel(dc, COMMON_ACTREQ, DC_CMD_STATE_CONTROL); tegra_dc_readl(dc, DC_CMD_STATE_CONTROL); - pm_runtime_put(dc->dev); + host1x_client_suspend(&dc->client); } void tegra_display_hub_atomic_commit(struct drm_device *drm, @@ -732,9 +755,85 @@ static int tegra_display_hub_exit(struct host1x_client *client) return 0; } +static int tegra_display_hub_runtime_suspend(struct host1x_client *client) +{ + struct tegra_display_hub *hub = to_tegra_display_hub(client); + struct device *dev = client->dev; + unsigned int i = hub->num_heads; + int err; + + err = reset_control_assert(hub->rst); + if (err < 0) + return err; + + while (i--) + clk_disable_unprepare(hub->clk_heads[i]); + + clk_disable_unprepare(hub->clk_hub); + clk_disable_unprepare(hub->clk_dsc); + clk_disable_unprepare(hub->clk_disp); + + pm_runtime_put_sync(dev); + + return 0; +} + +static int tegra_display_hub_runtime_resume(struct host1x_client *client) +{ + struct tegra_display_hub *hub = to_tegra_display_hub(client); + struct device *dev = client->dev; + unsigned int i; + int err; + + err = pm_runtime_get_sync(dev); + if (err < 0) { + dev_err(dev, "failed to get runtime PM: %d\n", err); + return err; + } + + err = clk_prepare_enable(hub->clk_disp); + if (err < 0) + goto put_rpm; + + err = clk_prepare_enable(hub->clk_dsc); + if (err < 0) + goto disable_disp; + + err = clk_prepare_enable(hub->clk_hub); + if (err < 0) + goto disable_dsc; + + for (i = 0; i < hub->num_heads; i++) { + err = clk_prepare_enable(hub->clk_heads[i]); + if (err < 0) + goto disable_heads; + } + + err = reset_control_deassert(hub->rst); + if (err < 0) + goto disable_heads; + + return 0; + +disable_heads: + while (i--) + clk_disable_unprepare(hub->clk_heads[i]); + + clk_disable_unprepare(hub->clk_hub); +disable_dsc: + clk_disable_unprepare(hub->clk_dsc); +disable_disp: + clk_disable_unprepare(hub->clk_disp); +put_rpm: + pm_runtime_put_sync(dev); + return err; +} + static const struct host1x_client_ops tegra_display_hub_ops = { .init = tegra_display_hub_init, .exit = tegra_display_hub_exit, + .suspend = tegra_display_hub_runtime_suspend, + .resume = tegra_display_hub_runtime_resume, }; static int tegra_display_hub_probe(struct platform_device *pdev) @@ -851,6 +950,7 @@ static int tegra_display_hub_probe(struct platform_device *pdev) static int tegra_display_hub_remove(struct platform_device *pdev) { struct tegra_display_hub *hub = platform_get_drvdata(pdev); + unsigned int i; int err; err = host1x_client_unregister(&hub->client); @@ -859,78 +959,17 @@ static int tegra_display_hub_remove(struct platform_device *pdev) err); } - pm_runtime_disable(&pdev->dev); - - return err; -} - -static int __maybe_unused tegra_display_hub_suspend(struct device *dev) -{ - struct tegra_display_hub *hub = dev_get_drvdata(dev); - unsigned int i = hub->num_heads; - int err; - - err = reset_control_assert(hub->rst); - if (err < 0) - return err; - - while (i--) - clk_disable_unprepare(hub->clk_heads[i]); - - clk_disable_unprepare(hub->clk_hub); - clk_disable_unprepare(hub->clk_dsc); - clk_disable_unprepare(hub->clk_disp); - - return 0; -} - -static int __maybe_unused tegra_display_hub_resume(struct device *dev) -{ - struct tegra_display_hub *hub = dev_get_drvdata(dev); - unsigned int i; - int err; - - err = clk_prepare_enable(hub->clk_disp); - if (err < 0) - return err; - - err = clk_prepare_enable(hub->clk_dsc); - if (err < 0) - goto disable_disp; - - err = clk_prepare_enable(hub->clk_hub); - if (err < 0) - goto disable_dsc; + for (i = 0; i < hub->soc->num_wgrps; i++) { + struct tegra_windowgroup *wgrp = &hub->wgrps[i]; - for (i = 0; i < hub->num_heads; i++) { - err = clk_prepare_enable(hub->clk_heads[i]); - if (err < 0) - goto disable_heads; + mutex_destroy(&wgrp->lock); } - err = reset_control_deassert(hub->rst); - if (err < 0) - goto disable_heads; - - return 0; - -disable_heads: - while (i--) - clk_disable_unprepare(hub->clk_heads[i]); + pm_runtime_disable(&pdev->dev); - clk_disable_unprepare(hub->clk_hub); -disable_dsc: - clk_disable_unprepare(hub->clk_dsc); -disable_disp: - clk_disable_unprepare(hub->clk_disp); return err; } -static const struct dev_pm_ops tegra_display_hub_pm_ops = { - SET_RUNTIME_PM_OPS(tegra_display_hub_suspend, - tegra_display_hub_resume, NULL) -}; - static const struct tegra_display_hub_soc tegra186_display_hub = { .num_wgrps = 6, .supports_dsc = true, @@ -958,7 +997,6 @@ struct platform_driver tegra_display_hub_driver = { .driver = { .name = "tegra-display-hub", .of_match_table = tegra_display_hub_of_match, - .pm = &tegra_display_hub_pm_ops, }, .probe = tegra_display_hub_probe, .remove = tegra_display_hub_remove, diff --git a/drivers/gpu/drm/tegra/hub.h b/drivers/gpu/drm/tegra/hub.h index 767a60d9313c..3efa1be07ff8 100644 --- a/drivers/gpu/drm/tegra/hub.h +++ b/drivers/gpu/drm/tegra/hub.h @@ -17,7 +17,7 @@ struct tegra_windowgroup { struct mutex lock; unsigned int index; - struct device *parent; + struct host1x_client *parent; struct reset_control *rst; }; diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index 956bf5d680ad..200d99e17afe 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -2255,7 +2255,7 @@ static void tegra_sor_hdmi_disable(struct drm_encoder *encoder) if (err < 0) dev_err(sor->dev, "failed to power off I/O pad: %d\n", err); - pm_runtime_put(sor->dev); + host1x_client_suspend(&sor->client); } static void tegra_sor_hdmi_enable(struct drm_encoder *encoder) @@ -2276,7 +2276,11 @@ static void tegra_sor_hdmi_enable(struct drm_encoder *encoder) mode = &encoder->crtc->state->adjusted_mode; pclk = mode->clock * 1000; - pm_runtime_get_sync(sor->dev); + err = host1x_client_resume(&sor->client); + if (err < 0) { + dev_err(sor->dev, "failed to resume: %d\n", err); + return; + } /* switch to safe parent clock */ err = tegra_sor_set_parent_clock(sor, sor->clk_safe); @@ -2722,7 +2726,7 @@ static void tegra_sor_dp_disable(struct drm_encoder *encoder) if (output->panel) drm_panel_unprepare(output->panel); - pm_runtime_put(sor->dev); + host1x_client_suspend(&sor->client); } static void tegra_sor_dp_enable(struct drm_encoder *encoder) @@ -2742,7 +2746,11 @@ static void tegra_sor_dp_enable(struct drm_encoder *encoder) mode = &encoder->crtc->state->adjusted_mode; info = &output->connector.display_info; - pm_runtime_get_sync(sor->dev); + err = host1x_client_resume(&sor->client); + if (err < 0) { + dev_err(sor->dev, "failed to resume: %d\n", err); + return; + } /* switch to safe parent clock */ err = tegra_sor_set_parent_clock(sor, sor->clk_safe); @@ -3189,9 +3197,80 @@ static int tegra_sor_exit(struct host1x_client *client) return 0; } +static int tegra_sor_runtime_suspend(struct host1x_client *client) +{ + struct tegra_sor *sor = host1x_client_to_sor(client); + struct device *dev = client->dev; + int err; + + if (sor->rst) { + err = reset_control_assert(sor->rst); + if (err < 0) { + dev_err(dev, "failed to assert reset: %d\n", err); + return err; + } + + reset_control_release(sor->rst); + } + + usleep_range(1000, 2000); + + clk_disable_unprepare(sor->clk); + pm_runtime_put_sync(dev); + + return 0; +} + +static int tegra_sor_runtime_resume(struct host1x_client *client) +{ + struct tegra_sor *sor = host1x_client_to_sor(client); + struct device *dev = client->dev; + int err; + + err = pm_runtime_get_sync(dev); + if (err < 0) { + dev_err(dev, "failed to get runtime PM: %d\n", err); + return err; + } + + err = clk_prepare_enable(sor->clk); + if (err < 0) { + dev_err(dev, "failed to enable clock: %d\n", err); + goto put_rpm; + } + + usleep_range(1000, 2000); + + if (sor->rst) { + err = reset_control_acquire(sor->rst); + if (err < 0) { + dev_err(dev, "failed to acquire reset: %d\n", err); + goto disable_clk; + } + + err = reset_control_deassert(sor->rst); + if (err < 0) { + dev_err(dev, "failed to deassert reset: %d\n", err); + goto release_reset; + } + } + + return 0; + +release_reset: + reset_control_release(sor->rst); +disable_clk: + clk_disable_unprepare(sor->clk); +put_rpm: + pm_runtime_put_sync(dev); + return err; +} + static const struct host1x_client_ops sor_client_ops = { .init = tegra_sor_init, .exit = tegra_sor_exit, + .suspend = tegra_sor_runtime_suspend, + .resume = tegra_sor_runtime_resume, }; static const u8 tegra124_sor_xbar_cfg[5] = { @@ -3842,10 +3921,9 @@ static int tegra_sor_probe(struct platform_device *pdev) if (!sor->clk_pad) { char *name; - err = pm_runtime_get_sync(&pdev->dev); + err = host1x_client_resume(&sor->client); if (err < 0) { - dev_err(&pdev->dev, "failed to get runtime PM: %d\n", - err); + dev_err(sor->dev, "failed to resume: %d\n", err); goto remove; } @@ -3856,7 +3934,7 @@ static int tegra_sor_probe(struct platform_device *pdev) } sor->clk_pad = tegra_clk_sor_pad_register(sor, name); - pm_runtime_put(&pdev->dev); + host1x_client_suspend(&sor->client); } if (IS_ERR(sor->clk_pad)) { @@ -3912,61 +3990,6 @@ static int tegra_sor_remove(struct platform_device *pdev) return 0; } -static int tegra_sor_runtime_suspend(struct device *dev) -{ - struct tegra_sor *sor = dev_get_drvdata(dev); - int err; - - if (sor->rst) { - err = reset_control_assert(sor->rst); - if (err < 0) { - dev_err(dev, "failed to assert reset: %d\n", err); - return err; - } - - reset_control_release(sor->rst); - } - - usleep_range(1000, 2000); - - clk_disable_unprepare(sor->clk); - - return 0; -} - -static int tegra_sor_runtime_resume(struct device *dev) -{ - struct tegra_sor *sor = dev_get_drvdata(dev); - int err; - - err = clk_prepare_enable(sor->clk); - if (err < 0) { - dev_err(dev, "failed to enable clock: %d\n", err); - return err; - } - - usleep_range(1000, 2000); - - if (sor->rst) { - err = reset_control_acquire(sor->rst); - if (err < 0) { - dev_err(dev, "failed to acquire reset: %d\n", err); - clk_disable_unprepare(sor->clk); - return err; - } - - err = reset_control_deassert(sor->rst); - if (err < 0) { - dev_err(dev, "failed to deassert reset: %d\n", err); - reset_control_release(sor->rst); - clk_disable_unprepare(sor->clk); - return err; - } - } - - return 0; -} - static int tegra_sor_suspend(struct device *dev) { struct tegra_sor *sor = dev_get_drvdata(dev); @@ -3974,8 +3997,9 @@ static int tegra_sor_suspend(struct device *dev) if (sor->hdmi_supply) { err = regulator_disable(sor->hdmi_supply); - if (err < 0) + if (err < 0) { return err; + } } return 0; @@ -3996,8 +4020,6 @@ static int tegra_sor_resume(struct device *dev) } static const struct dev_pm_ops tegra_sor_pm_ops = { - SET_RUNTIME_PM_OPS(tegra_sor_runtime_suspend, tegra_sor_runtime_resume, - NULL) SET_SYSTEM_SLEEP_PM_OPS(tegra_sor_suspend, tegra_sor_resume) }; diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c index 50d500345d04..6a995db51d6d 100644 --- a/drivers/gpu/host1x/bus.c +++ b/drivers/gpu/host1x/bus.c @@ -710,6 +710,10 @@ int host1x_client_register(struct host1x_client *client) struct host1x *host1x; int err; + INIT_LIST_HEAD(&client->list); + mutex_init(&client->lock); + client->usecount = 0; + mutex_lock(&devices_lock); list_for_each_entry(host1x, &devices, list) { @@ -768,3 +772,74 @@ int host1x_client_unregister(struct host1x_client *client) return 0; } EXPORT_SYMBOL(host1x_client_unregister); + +int host1x_client_suspend(struct host1x_client *client) +{ + int err = 0; + + mutex_lock(&client->lock); + + if (client->usecount == 1) { + if (client->ops && client->ops->suspend) { + err = client->ops->suspend(client); + if (err < 0) + goto unlock; + } + } + + client->usecount--; + dev_dbg(client->dev, "use count: %u\n", client->usecount); + + if (client->parent) { + err = host1x_client_suspend(client->parent); + if (err < 0) + goto resume; + } + + goto unlock; + +resume: + if (client->usecount == 0) + if (client->ops && client->ops->resume) + client->ops->resume(client); + + client->usecount++; +unlock: + mutex_unlock(&client->lock); + return err; +} +EXPORT_SYMBOL(host1x_client_suspend); + +int host1x_client_resume(struct host1x_client *client) +{ + int err = 0; + + mutex_lock(&client->lock); + + if (client->parent) { + err = host1x_client_resume(client->parent); + if (err < 0) + goto unlock; + } + + if (client->usecount == 0) { + if (client->ops && client->ops->resume) { + err = client->ops->resume(client); + if (err < 0) + goto suspend; + } + } + + client->usecount++; + dev_dbg(client->dev, "use count: %u\n", client->usecount); + + goto unlock; + +suspend: + if (client->parent) + host1x_client_suspend(client->parent); +unlock: + mutex_unlock(&client->lock); + return err; +} +EXPORT_SYMBOL(host1x_client_resume); diff --git a/include/linux/host1x.h b/include/linux/host1x.h index b673d6198e05..325dabe4dd36 100644 --- a/include/linux/host1x.h +++ b/include/linux/host1x.h @@ -24,10 +24,14 @@ struct iommu_group; * struct host1x_client_ops - host1x client operations * @init: host1x client initialization code * @exit: host1x client tear down code + * @suspend: host1x client suspend code + * @resume: host1x client resume code */ struct host1x_client_ops { int (*init)(struct host1x_client *client); int (*exit)(struct host1x_client *client); + int (*suspend)(struct host1x_client *client); + int (*resume)(struct host1x_client *client); }; /** @@ -55,6 +59,10 @@ struct host1x_client { struct host1x_syncpt **syncpts; unsigned int num_syncpts; + + struct host1x_client *parent; + unsigned int usecount; + struct mutex lock; }; /* @@ -322,6 +330,9 @@ int host1x_device_exit(struct host1x_device *device); int host1x_client_register(struct host1x_client *client); int host1x_client_unregister(struct host1x_client *client); +int host1x_client_suspend(struct host1x_client *client); +int host1x_client_resume(struct host1x_client *client); + struct tegra_mipi_device; struct tegra_mipi_device *tegra_mipi_request(struct device *device); 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