From 47bfd6c01efe639d4c44b1e3fce3816d36b23d46 Mon Sep 17 00:00:00 2001 From: Jyri Sarha Date: Wed, 22 Jun 2016 16:27:54 +0300 Subject: [PATCH] drm/tilcdc: Get rid of legacy dpms mechanism Get rid of legacy dpms mechanism. This simplifies the code quite a bit. The old start() and stop() functions become tilcdc_crtc_enable() and *_disable(). The functions are added with all the necessary mechanisms from the old dpms function and they are used directly as the crtc helper enable() and disable() callbacks. Signed-off-by: Jyri Sarha --- drivers/gpu/drm/tilcdc/tilcdc_crtc.c | 109 +++++++++++---------------- drivers/gpu/drm/tilcdc/tilcdc_drv.c | 8 +- drivers/gpu/drm/tilcdc/tilcdc_drv.h | 3 +- 3 files changed, 50 insertions(+), 70 deletions(-) diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c index 773bee27a2d0..400d8c45b075 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c @@ -30,7 +30,7 @@ struct tilcdc_crtc { struct drm_plane primary; const struct tilcdc_panel_info *info; struct drm_pending_vblank_event *event; - int dpms; + bool enabled; wait_queue_head_t frame_done_wq; bool frame_done; spinlock_t irq_lock; @@ -137,9 +137,15 @@ static void reset(struct drm_crtc *crtc) tilcdc_clear(dev, LCDC_CLK_RESET_REG, LCDC_CLK_MAIN_RESET); } -static void start(struct drm_crtc *crtc) +static void tilcdc_crtc_enable(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; + struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc); + + if (tilcdc_crtc->enabled) + return; + + pm_runtime_get_sync(dev->dev); reset(crtc); @@ -150,14 +156,19 @@ static void start(struct drm_crtc *crtc) tilcdc_set(dev, LCDC_RASTER_CTRL_REG, LCDC_RASTER_ENABLE); drm_crtc_vblank_on(crtc); + + tilcdc_crtc->enabled = true; } -static void stop(struct drm_crtc *crtc) +void tilcdc_crtc_disable(struct drm_crtc *crtc) { struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc); struct drm_device *dev = crtc->dev; struct tilcdc_drm_private *priv = dev->dev_private; + if (!tilcdc_crtc->enabled) + return; + tilcdc_crtc->frame_done = false; tilcdc_clear(dev, LCDC_RASTER_CTRL_REG, LCDC_RASTER_ENABLE); @@ -177,13 +188,37 @@ static void stop(struct drm_crtc *crtc) drm_crtc_vblank_off(crtc); tilcdc_crtc_disable_irqs(dev); + + pm_runtime_put_sync(dev->dev); + + if (tilcdc_crtc->next_fb) { + drm_flip_work_queue(&tilcdc_crtc->unref_work, + tilcdc_crtc->next_fb); + tilcdc_crtc->next_fb = NULL; + } + + if (tilcdc_crtc->curr_fb) { + drm_flip_work_queue(&tilcdc_crtc->unref_work, + tilcdc_crtc->curr_fb); + tilcdc_crtc->curr_fb = NULL; + } + + drm_flip_work_commit(&tilcdc_crtc->unref_work, priv->wq); + tilcdc_crtc->last_vblank = ktime_set(0, 0); + + tilcdc_crtc->enabled = false; +} + +static bool tilcdc_crtc_is_on(struct drm_crtc *crtc) +{ + return crtc->state && crtc->state->enable && crtc->state->active; } static void tilcdc_crtc_destroy(struct drm_crtc *crtc) { struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc); - tilcdc_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); + tilcdc_crtc_disable(crtc); of_node_put(crtc->port); drm_crtc_cleanup(crtc); @@ -237,52 +272,6 @@ int tilcdc_crtc_page_flip(struct drm_crtc *crtc, return 0; } -void tilcdc_crtc_dpms(struct drm_crtc *crtc, int mode) -{ - struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc); - struct drm_device *dev = crtc->dev; - struct tilcdc_drm_private *priv = dev->dev_private; - - /* we really only care about on or off: */ - if (mode != DRM_MODE_DPMS_ON) - mode = DRM_MODE_DPMS_OFF; - - if (tilcdc_crtc->dpms == mode) - return; - - tilcdc_crtc->dpms = mode; - - if (mode == DRM_MODE_DPMS_ON) { - pm_runtime_get_sync(dev->dev); - start(crtc); - } else { - stop(crtc); - pm_runtime_put_sync(dev->dev); - - if (tilcdc_crtc->next_fb) { - drm_flip_work_queue(&tilcdc_crtc->unref_work, - tilcdc_crtc->next_fb); - tilcdc_crtc->next_fb = NULL; - } - - if (tilcdc_crtc->curr_fb) { - drm_flip_work_queue(&tilcdc_crtc->unref_work, - tilcdc_crtc->curr_fb); - tilcdc_crtc->curr_fb = NULL; - } - - drm_flip_work_commit(&tilcdc_crtc->unref_work, priv->wq); - tilcdc_crtc->last_vblank = ktime_set(0, 0); - } -} - -int tilcdc_crtc_current_dpms_state(struct drm_crtc *crtc) -{ - struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc); - - return tilcdc_crtc->dpms; -} - static bool tilcdc_crtc_mode_fixup(struct drm_crtc *crtc, const struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) @@ -312,16 +301,6 @@ static bool tilcdc_crtc_mode_fixup(struct drm_crtc *crtc, return true; } -static void tilcdc_crtc_disable(struct drm_crtc *crtc) -{ - tilcdc_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); -} - -static void tilcdc_crtc_enable(struct drm_crtc *crtc) -{ - tilcdc_crtc_dpms(crtc, DRM_MODE_DPMS_ON); -} - static void tilcdc_crtc_mode_set_nofb(struct drm_crtc *crtc) { struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc); @@ -655,18 +634,15 @@ void tilcdc_crtc_set_simulate_vesa_sync(struct drm_crtc *crtc, void tilcdc_crtc_update_clk(struct drm_crtc *crtc) { - struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc); struct drm_device *dev = crtc->dev; struct tilcdc_drm_private *priv = dev->dev_private; - int dpms = tilcdc_crtc->dpms; unsigned long lcd_clk; const unsigned clkdiv = 2; /* using a fixed divider of 2 */ int ret; pm_runtime_get_sync(dev->dev); - if (dpms == DRM_MODE_DPMS_ON) - tilcdc_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); + tilcdc_crtc_disable(crtc); /* mode.clock is in KHz, set_rate wants parameter in Hz */ ret = clk_set_rate(priv->clk, crtc->mode.clock * 1000 * clkdiv); @@ -690,8 +666,8 @@ void tilcdc_crtc_update_clk(struct drm_crtc *crtc) LCDC_V2_DMA_CLK_EN | LCDC_V2_LIDD_CLK_EN | LCDC_V2_CORE_CLK_EN); - if (dpms == DRM_MODE_DPMS_ON) - tilcdc_crtc_dpms(crtc, DRM_MODE_DPMS_ON); + if (tilcdc_crtc_is_on(crtc)) + tilcdc_crtc_enable(crtc); out: pm_runtime_put_sync(dev->dev); @@ -802,7 +778,6 @@ struct drm_crtc *tilcdc_crtc_create(struct drm_device *dev) if (ret < 0) goto fail; - tilcdc_crtc->dpms = DRM_MODE_DPMS_OFF; init_waitqueue_head(&tilcdc_crtc->frame_done_wq); drm_flip_work_init(&tilcdc_crtc->unref_work, diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c index a9624b2e1815..3404d245d28d 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c @@ -113,12 +113,18 @@ static int tilcdc_commit(struct drm_device *dev, * current layout. */ + /* Keep HW on while we commit the state. */ + pm_runtime_get_sync(dev->dev); + drm_atomic_helper_commit_modeset_disables(dev, state); drm_atomic_helper_commit_planes(dev, state, false); drm_atomic_helper_commit_modeset_enables(dev, state); + /* Now HW should remain on if need becase the crtc is enabled */ + pm_runtime_put_sync(dev->dev); + drm_atomic_helper_wait_for_vblanks(dev, state); drm_atomic_helper_cleanup_planes(dev, state); @@ -183,7 +189,7 @@ static int tilcdc_unload(struct drm_device *dev) { struct tilcdc_drm_private *priv = dev->dev_private; - tilcdc_crtc_dpms(priv->crtc, DRM_MODE_DPMS_OFF); + tilcdc_crtc_disable(priv->crtc); tilcdc_remove_external_encoders(dev); diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.h b/drivers/gpu/drm/tilcdc/tilcdc_drv.h index 5e645ce2b509..a02eb3736d75 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_drv.h +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.h @@ -170,8 +170,7 @@ void tilcdc_crtc_set_simulate_vesa_sync(struct drm_crtc *crtc, bool simulate_vesa_sync); int tilcdc_crtc_mode_valid(struct drm_crtc *crtc, struct drm_display_mode *mode); int tilcdc_crtc_max_width(struct drm_crtc *crtc); -void tilcdc_crtc_dpms(struct drm_crtc *crtc, int mode); -int tilcdc_crtc_current_dpms_state(struct drm_crtc *crtc); +void tilcdc_crtc_disable(struct drm_crtc *crtc); int tilcdc_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb, struct drm_pending_vblank_event *event, -- 2.20.1