This patch implements the initialize callback in the hdmi and mixer manager. This allows us to get rid of drm_dev in the drm_hdmi level and track it in the mixer and hdmi drivers. This is one of the things holding back the complete removal of the drm_hdmi layer.
Signed-off-by: Sean Paul seanpaul@chromium.org ---
Changes in v2: None
drivers/gpu/drm/exynos/exynos_drm_hdmi.c | 35 ++++++++++++++++++++++++++------ drivers/gpu/drm/exynos/exynos_drm_hdmi.h | 3 ++- drivers/gpu/drm/exynos/exynos_hdmi.c | 18 ++++++++++++---- drivers/gpu/drm/exynos/exynos_mixer.c | 35 +++++++++++++++++++------------- 4 files changed, 66 insertions(+), 25 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_hdmi.c b/drivers/gpu/drm/exynos/exynos_drm_hdmi.c index a1ef3c9..aebcc0e 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_hdmi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_hdmi.c @@ -97,6 +97,18 @@ void exynos_mixer_ops_register(struct exynos_mixer_ops *ops) mixer_ops = ops; }
+static int drm_hdmi_display_initialize(struct device *dev, + struct drm_device *drm_dev) +{ + struct drm_hdmi_context *ctx = to_context(dev); + + if (hdmi_ops && hdmi_ops->initialize) + return hdmi_ops->initialize(ctx->hdmi_ctx->ctx, drm_dev); + + return 0; +} + + static bool drm_hdmi_is_connected(struct device *dev) { struct drm_hdmi_context *ctx = to_context(dev); @@ -153,6 +165,7 @@ static int drm_hdmi_power_on(struct device *dev, int mode)
static struct exynos_drm_display_ops drm_hdmi_display_ops = { .type = EXYNOS_DISPLAY_TYPE_HDMI, + .initialize = drm_hdmi_display_initialize, .is_connected = drm_hdmi_is_connected, .get_edid = drm_hdmi_get_edid, .check_mode = drm_hdmi_check_mode, @@ -257,6 +270,21 @@ static void drm_hdmi_commit(struct device *subdrv_dev) hdmi_ops->commit(ctx->hdmi_ctx->ctx); }
+static int drm_hdmi_mgr_initialize(struct device *subdrv_dev, + struct drm_device *drm_dev) +{ + struct drm_hdmi_context *ctx = to_context(subdrv_dev); + int ret = 0; + + if (mixer_ops && mixer_ops->initialize) + ret = mixer_ops->initialize(ctx->mixer_ctx->ctx, drm_dev); + + if (mixer_ops->iommu_on) + mixer_ops->iommu_on(ctx->mixer_ctx->ctx, true); + + return ret; +} + static void drm_hdmi_dpms(struct device *subdrv_dev, int mode) { struct drm_hdmi_context *ctx = to_context(subdrv_dev); @@ -326,6 +354,7 @@ static void drm_mixer_win_disable(struct device *subdrv_dev, int zpos) }
static struct exynos_drm_manager_ops drm_hdmi_manager_ops = { + .initialize = drm_hdmi_mgr_initialize, .dpms = drm_hdmi_dpms, .apply = drm_hdmi_apply, .enable_vblank = drm_hdmi_enable_vblank, @@ -372,12 +401,6 @@ static int hdmi_subdrv_probe(struct drm_device *drm_dev, ctx->hdmi_ctx = hdmi_ctx; ctx->mixer_ctx = mixer_ctx;
- ctx->hdmi_ctx->drm_dev = drm_dev; - ctx->mixer_ctx->drm_dev = drm_dev; - - if (mixer_ops->iommu_on) - mixer_ops->iommu_on(ctx->mixer_ctx->ctx, true); - return 0; }
diff --git a/drivers/gpu/drm/exynos/exynos_drm_hdmi.h b/drivers/gpu/drm/exynos/exynos_drm_hdmi.h index 724cab1..cf7b1da 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_hdmi.h +++ b/drivers/gpu/drm/exynos/exynos_drm_hdmi.h @@ -23,12 +23,12 @@ * this context should be hdmi_context or mixer_context. */ struct exynos_drm_hdmi_context { - struct drm_device *drm_dev; void *ctx; };
struct exynos_hdmi_ops { /* display */ + int (*initialize)(void *ctx, struct drm_device *drm_dev); bool (*is_connected)(void *ctx); struct edid *(*get_edid)(void *ctx, struct drm_connector *connector); @@ -45,6 +45,7 @@ struct exynos_hdmi_ops {
struct exynos_mixer_ops { /* manager */ + int (*initialize)(void *ctx, struct drm_device *drm_dev); int (*iommu_on)(void *ctx, bool enable); int (*enable_vblank)(void *ctx, int pipe); void (*disable_vblank)(void *ctx); diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c index a0e10ae..a3fba8e 100644 --- a/drivers/gpu/drm/exynos/exynos_hdmi.c +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c @@ -742,6 +742,15 @@ static void hdmi_reg_infoframe(struct hdmi_context *hdata, } }
+static int hdmi_initialize(void *ctx, struct drm_device *drm_dev) +{ + struct hdmi_context *hdata = ctx; + + hdata->drm_dev = drm_dev; + + return 0; +} + static bool hdmi_is_connected(void *ctx) { struct hdmi_context *hdata = ctx; @@ -1747,6 +1756,7 @@ static void hdmi_dpms(void *ctx, int mode)
static struct exynos_hdmi_ops hdmi_ops = { /* display */ + .initialize = hdmi_initialize, .is_connected = hdmi_is_connected, .get_edid = hdmi_get_edid, .check_mode = hdmi_check_mode, @@ -1767,8 +1777,8 @@ static irqreturn_t hdmi_irq_thread(int irq, void *arg) hdata->hpd = gpio_get_value(hdata->hpd_gpio); mutex_unlock(&hdata->hdmi_mutex);
- if (ctx->drm_dev) - drm_helper_hpd_irq_event(ctx->drm_dev); + if (hdata->drm_dev) + drm_helper_hpd_irq_event(hdata->drm_dev);
return IRQ_HANDLED; } @@ -2026,8 +2036,8 @@ static int hdmi_suspend(struct device *dev) disable_irq(hdata->irq);
hdata->hpd = false; - if (ctx->drm_dev) - drm_helper_hpd_irq_event(ctx->drm_dev); + if (hdata->drm_dev) + drm_helper_hpd_irq_event(hdata->drm_dev);
if (pm_runtime_suspended(dev)) { DRM_DEBUG_KMS("Already suspended\n"); diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c index 9634188..2f204c1 100644 --- a/drivers/gpu/drm/exynos/exynos_mixer.c +++ b/drivers/gpu/drm/exynos/exynos_mixer.c @@ -685,20 +685,25 @@ static void mixer_win_reset(struct mixer_context *ctx) spin_unlock_irqrestore(&res->reg_slock, flags); }
+static int mixer_initialize(void *ctx, struct drm_device *drm_dev) +{ + struct mixer_context *mixer_ctx = ctx; + + mixer_ctx->drm_dev = drm_dev; + + return 0; +} + static int mixer_iommu_on(void *ctx, bool enable) { - struct exynos_drm_hdmi_context *drm_hdmi_ctx; struct mixer_context *mdata = ctx; - struct drm_device *drm_dev; - - drm_hdmi_ctx = mdata->parent_ctx; - drm_dev = drm_hdmi_ctx->drm_dev;
- if (is_drm_iommu_supported(drm_dev)) { + if (is_drm_iommu_supported(mdata->drm_dev)) { if (enable) - return drm_iommu_attach_device(drm_dev, mdata->dev); + return drm_iommu_attach_device(mdata->drm_dev, + mdata->dev);
- drm_iommu_detach_device(drm_dev, mdata->dev); + drm_iommu_detach_device(mdata->drm_dev, mdata->dev); } return 0; } @@ -970,6 +975,7 @@ static void mixer_dpms(void *ctx, int mode)
static struct exynos_mixer_ops mixer_ops = { /* manager */ + .initialize = mixer_initialize, .iommu_on = mixer_iommu_on, .enable_vblank = mixer_enable_vblank, .disable_vblank = mixer_disable_vblank, @@ -985,8 +991,7 @@ static struct exynos_mixer_ops mixer_ops = {
static irqreturn_t mixer_irq_handler(int irq, void *arg) { - struct exynos_drm_hdmi_context *drm_hdmi_ctx = arg; - struct mixer_context *ctx = drm_hdmi_ctx->ctx; + struct mixer_context *ctx = arg; struct mixer_resources *res = &ctx->mixer_res; u32 val, base, shadow;
@@ -995,6 +1000,9 @@ static irqreturn_t mixer_irq_handler(int irq, void *arg) /* read interrupt status for handling and clearing flags for VSYNC */ val = mixer_reg_read(res, MXR_INT_STATUS);
+ if (!ctx->drm_dev) + goto out; + /* handling VSYNC */ if (val & MXR_INT_STATUS_VSYNC) { /* interlace scan need to check shadow register */ @@ -1010,9 +1018,8 @@ static irqreturn_t mixer_irq_handler(int irq, void *arg) goto out; }
- drm_handle_vblank(drm_hdmi_ctx->drm_dev, ctx->pipe); - exynos_drm_crtc_finish_pageflip(drm_hdmi_ctx->drm_dev, - ctx->pipe); + drm_handle_vblank(ctx->drm_dev, ctx->pipe); + exynos_drm_crtc_finish_pageflip(ctx->drm_dev, ctx->pipe);
/* set wait vsync event to zero and wake up queue. */ if (atomic_read(&ctx->wait_vsync_event)) { @@ -1077,7 +1084,7 @@ static int mixer_resources_init(struct exynos_drm_hdmi_context *ctx, }
ret = devm_request_irq(dev, res->start, mixer_irq_handler, - 0, "drm_mixer", ctx); + 0, "drm_mixer", mixer_ctx); if (ret) { dev_err(dev, "request interrupt failed.\n"); return ret;