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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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Merge branch 'for-next' of http://git.agner.ch/git/linux-drm-fsl-dcu into drm-next
The patchset contains a new helper in drm_fb_cma_helper.c for suspend/ resume when using cma backed framebuffers. * 'for-next' of http://git.agner.ch/git/linux-drm-fsl-dcu: drm/fsl-dcu: disable vblank events on CRTC disable drm/fsl-dcu: implement suspend/resume using atomic helpers drm/fsl-dcu: use clk helpers drm/fsl-dcu: move layer initialization to plane file drm/fsl-dcu: store layer registers in soc_data drm/fb_cma_helper: add suspend helper
This commit is contained in:
commit
dac2c48ca5
7 changed files with 79 additions and 30 deletions
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@ -596,3 +596,18 @@ void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma)
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drm_fb_helper_hotplug_event(&fbdev_cma->fb_helper);
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}
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EXPORT_SYMBOL_GPL(drm_fbdev_cma_hotplug_event);
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/**
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* drm_fbdev_cma_set_suspend - wrapper around drm_fb_helper_set_suspend
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* @fbdev_cma: The drm_fbdev_cma struct, may be NULL
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* @state: desired state, zero to resume, non-zero to suspend
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*
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* Calls drm_fb_helper_set_suspend, which is a wrapper around
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* fb_set_suspend implemented by fbdev core.
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*/
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void drm_fbdev_cma_set_suspend(struct drm_fbdev_cma *fbdev_cma, int state)
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{
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if (fbdev_cma)
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drm_fb_helper_set_suspend(&fbdev_cma->fb_helper, state);
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}
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EXPORT_SYMBOL(drm_fbdev_cma_set_suspend);
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@ -44,6 +44,8 @@ static void fsl_dcu_drm_disable_crtc(struct drm_crtc *crtc)
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struct drm_device *dev = crtc->dev;
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struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
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drm_crtc_vblank_off(crtc);
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regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
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DCU_MODE_DCU_MODE_MASK,
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DCU_MODE_DCU_MODE(DCU_MODE_OFF));
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@ -61,6 +63,8 @@ static void fsl_dcu_drm_crtc_enable(struct drm_crtc *crtc)
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DCU_MODE_DCU_MODE(DCU_MODE_NORMAL));
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regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
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DCU_UPDATE_MODE_READREG);
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drm_crtc_vblank_on(crtc);
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}
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static void fsl_dcu_drm_crtc_mode_set_nofb(struct drm_crtc *crtc)
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@ -137,9 +141,10 @@ int fsl_dcu_drm_crtc_create(struct fsl_dcu_drm_device *fsl_dev)
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{
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struct drm_plane *primary;
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struct drm_crtc *crtc = &fsl_dev->crtc;
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unsigned int i, j, reg_num;
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int ret;
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fsl_dcu_drm_init_planes(fsl_dev->drm);
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primary = fsl_dcu_drm_primary_create_plane(fsl_dev->drm);
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if (!primary)
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return -ENOMEM;
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@ -153,19 +158,5 @@ int fsl_dcu_drm_crtc_create(struct fsl_dcu_drm_device *fsl_dev)
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drm_crtc_helper_add(crtc, &fsl_dcu_drm_crtc_helper_funcs);
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if (!strcmp(fsl_dev->soc->name, "ls1021a"))
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reg_num = LS1021A_LAYER_REG_NUM;
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else
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reg_num = VF610_LAYER_REG_NUM;
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for (i = 0; i < fsl_dev->soc->total_layer; i++) {
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for (j = 1; j <= reg_num; j++)
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regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(i, j), 0);
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}
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regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
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DCU_MODE_DCU_MODE_MASK,
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DCU_MODE_DCU_MODE(DCU_MODE_OFF));
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regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
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DCU_UPDATE_MODE_READREG);
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return 0;
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}
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@ -11,6 +11,7 @@
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#include <linux/clk.h>
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#include <linux/clk-provider.h>
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#include <linux/console.h>
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#include <linux/io.h>
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#include <linux/mfd/syscon.h>
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#include <linux/mm.h>
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@ -22,6 +23,7 @@
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#include <linux/regmap.h>
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#include <drm/drmP.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_fb_cma_helper.h>
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#include <drm/drm_gem_cma_helper.h>
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@ -42,10 +44,8 @@ static const struct regmap_config fsl_dcu_regmap_config = {
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.reg_bits = 32,
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.reg_stride = 4,
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.val_bits = 32,
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.cache_type = REGCACHE_FLAT,
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.volatile_reg = fsl_dcu_drm_is_volatile_reg,
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.max_register = 0x11fc,
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};
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static int fsl_dcu_drm_irq_init(struct drm_device *dev)
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@ -229,11 +229,26 @@ static int fsl_dcu_drm_pm_suspend(struct device *dev)
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if (!fsl_dev)
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return 0;
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disable_irq(fsl_dev->irq);
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drm_kms_helper_poll_disable(fsl_dev->drm);
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regcache_cache_only(fsl_dev->regmap, true);
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regcache_mark_dirty(fsl_dev->regmap);
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clk_disable(fsl_dev->clk);
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clk_unprepare(fsl_dev->clk);
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console_lock();
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drm_fbdev_cma_set_suspend(fsl_dev->fbdev, 1);
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console_unlock();
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fsl_dev->state = drm_atomic_helper_suspend(fsl_dev->drm);
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if (IS_ERR(fsl_dev->state)) {
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console_lock();
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drm_fbdev_cma_set_suspend(fsl_dev->fbdev, 0);
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console_unlock();
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drm_kms_helper_poll_enable(fsl_dev->drm);
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enable_irq(fsl_dev->irq);
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return PTR_ERR(fsl_dev->state);
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}
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clk_disable_unprepare(fsl_dev->pix_clk);
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clk_disable_unprepare(fsl_dev->clk);
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return 0;
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}
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@ -246,21 +261,27 @@ static int fsl_dcu_drm_pm_resume(struct device *dev)
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if (!fsl_dev)
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return 0;
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ret = clk_enable(fsl_dev->clk);
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ret = clk_prepare_enable(fsl_dev->clk);
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if (ret < 0) {
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dev_err(dev, "failed to enable dcu clk\n");
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clk_unprepare(fsl_dev->clk);
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return ret;
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}
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ret = clk_prepare(fsl_dev->clk);
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if (ret < 0) {
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dev_err(dev, "failed to prepare dcu clk\n");
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return ret;
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}
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ret = clk_prepare_enable(fsl_dev->pix_clk);
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if (ret < 0) {
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dev_err(dev, "failed to enable pix clk\n");
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return ret;
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}
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fsl_dcu_drm_init_planes(fsl_dev->drm);
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drm_atomic_helper_resume(fsl_dev->drm, fsl_dev->state);
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console_lock();
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drm_fbdev_cma_set_suspend(fsl_dev->fbdev, 0);
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console_unlock();
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drm_kms_helper_poll_enable(fsl_dev->drm);
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regcache_cache_only(fsl_dev->regmap, false);
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regcache_sync(fsl_dev->regmap);
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enable_irq(fsl_dev->irq);
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return 0;
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}
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@ -274,12 +295,14 @@ static const struct fsl_dcu_soc_data fsl_dcu_ls1021a_data = {
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.name = "ls1021a",
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.total_layer = 16,
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.max_layer = 4,
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.layer_regs = LS1021A_LAYER_REG_NUM,
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};
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static const struct fsl_dcu_soc_data fsl_dcu_vf610_data = {
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.name = "vf610",
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.total_layer = 64,
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.max_layer = 6,
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.layer_regs = VF610_LAYER_REG_NUM,
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};
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static const struct of_device_id fsl_dcu_of_match[] = {
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@ -175,6 +175,7 @@ struct fsl_dcu_soc_data {
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unsigned int total_layer;
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/*max layer number DCU supported*/
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unsigned int max_layer;
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unsigned int layer_regs;
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};
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struct fsl_dcu_drm_device {
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@ -193,6 +194,7 @@ struct fsl_dcu_drm_device {
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struct drm_encoder encoder;
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struct fsl_dcu_drm_connector connector;
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const struct fsl_dcu_soc_data *soc;
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struct drm_atomic_state *state;
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};
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void fsl_dcu_fbdev_init(struct drm_device *dev);
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@ -217,6 +217,22 @@ static const u32 fsl_dcu_drm_plane_formats[] = {
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DRM_FORMAT_YUV422,
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};
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void fsl_dcu_drm_init_planes(struct drm_device *dev)
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{
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struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
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int i, j;
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for (i = 0; i < fsl_dev->soc->total_layer; i++) {
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for (j = 1; j <= fsl_dev->soc->layer_regs; j++)
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regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(i, j), 0);
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}
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regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
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DCU_MODE_DCU_MODE_MASK,
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DCU_MODE_DCU_MODE(DCU_MODE_OFF));
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regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
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DCU_UPDATE_MODE_READREG);
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}
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struct drm_plane *fsl_dcu_drm_primary_create_plane(struct drm_device *dev)
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{
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struct drm_plane *primary;
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@ -12,6 +12,7 @@
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#ifndef __FSL_DCU_DRM_PLANE_H__
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#define __FSL_DCU_DRM_PLANE_H__
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void fsl_dcu_drm_init_planes(struct drm_device *dev);
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struct drm_plane *fsl_dcu_drm_primary_create_plane(struct drm_device *dev);
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#endif /* __FSL_DCU_DRM_PLANE_H__ */
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@ -23,6 +23,7 @@ void drm_fbdev_cma_fini(struct drm_fbdev_cma *fbdev_cma);
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void drm_fbdev_cma_restore_mode(struct drm_fbdev_cma *fbdev_cma);
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void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma);
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void drm_fbdev_cma_set_suspend(struct drm_fbdev_cma *fbdev_cma, int state);
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int drm_fbdev_cma_create_with_funcs(struct drm_fb_helper *helper,
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struct drm_fb_helper_surface_size *sizes,
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const struct drm_framebuffer_funcs *funcs);
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