Merge branch 'drm_next' of https://github.com/markyzq/kernel-drm-rockchip into drm-next
rockchip fixes.
* 'drm_next' of https://github.com/markyzq/kernel-drm-rockchip:
drm/rockchip: vop: power off until vop standby take effect
drm/rockchip: vop: set vop enabled after enable iommu
drm/rockchip: vop use is_enabled instead of dpms mode
drm/rockchip: vop: fix vop vsync/hsync polarity
drm/rockchip: Only alloc a kmap for fbdev gem object
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c b/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c
index ff04877..d5c1248 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c
@@ -71,7 +71,7 @@
size = mode_cmd.pitches[0] * mode_cmd.height;
- rk_obj = rockchip_gem_create_object(dev, size);
+ rk_obj = rockchip_gem_create_object(dev, size, true);
if (IS_ERR(rk_obj))
return -ENOMEM;
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
index 7ca8799e..eb2282c 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
@@ -22,7 +22,8 @@
#include "rockchip_drm_drv.h"
#include "rockchip_drm_gem.h"
-static int rockchip_gem_alloc_buf(struct rockchip_gem_object *rk_obj)
+static int rockchip_gem_alloc_buf(struct rockchip_gem_object *rk_obj,
+ bool alloc_kmap)
{
struct drm_gem_object *obj = &rk_obj->base;
struct drm_device *drm = obj->dev;
@@ -30,7 +31,9 @@
init_dma_attrs(&rk_obj->dma_attrs);
dma_set_attr(DMA_ATTR_WRITE_COMBINE, &rk_obj->dma_attrs);
- /* TODO(djkurtz): Use DMA_ATTR_NO_KERNEL_MAPPING except for fbdev */
+ if (!alloc_kmap)
+ dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &rk_obj->dma_attrs);
+
rk_obj->kvaddr = dma_alloc_attrs(drm->dev, obj->size,
&rk_obj->dma_addr, GFP_KERNEL,
&rk_obj->dma_attrs);
@@ -103,7 +106,8 @@
}
struct rockchip_gem_object *
- rockchip_gem_create_object(struct drm_device *drm, unsigned int size)
+ rockchip_gem_create_object(struct drm_device *drm, unsigned int size,
+ bool alloc_kmap)
{
struct rockchip_gem_object *rk_obj;
struct drm_gem_object *obj;
@@ -119,7 +123,7 @@
drm_gem_private_object_init(drm, obj, size);
- ret = rockchip_gem_alloc_buf(rk_obj);
+ ret = rockchip_gem_alloc_buf(rk_obj, alloc_kmap);
if (ret)
goto err_free_rk_obj;
@@ -163,7 +167,7 @@
struct drm_gem_object *obj;
int ret;
- rk_obj = rockchip_gem_create_object(drm, size);
+ rk_obj = rockchip_gem_create_object(drm, size, false);
if (IS_ERR(rk_obj))
return ERR_CAST(rk_obj);
@@ -282,6 +286,9 @@
{
struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj);
+ if (dma_get_attr(DMA_ATTR_NO_KERNEL_MAPPING, &rk_obj->dma_attrs))
+ return NULL;
+
return rk_obj->kvaddr;
}
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.h b/drivers/gpu/drm/rockchip/rockchip_drm_gem.h
index 67bcebe..ad22618 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.h
@@ -41,7 +41,8 @@
struct vm_area_struct *vma);
struct rockchip_gem_object *
- rockchip_gem_create_object(struct drm_device *drm, unsigned int size);
+ rockchip_gem_create_object(struct drm_device *drm, unsigned int size,
+ bool alloc_kmap);
void rockchip_gem_free_object(struct drm_gem_object *obj);
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 9a5c571..d041921 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -81,7 +81,7 @@
struct drm_crtc crtc;
struct device *dev;
struct drm_device *drm_dev;
- unsigned int dpms;
+ bool is_enabled;
int connector_type;
int connector_out_mode;
@@ -89,6 +89,7 @@
/* mutex vsync_ work */
struct mutex vsync_mutex;
bool vsync_work_pending;
+ struct completion dsp_hold_completion;
const struct vop_data *data;
@@ -382,11 +383,44 @@
}
}
+static void vop_dsp_hold_valid_irq_enable(struct vop *vop)
+{
+ unsigned long flags;
+
+ if (WARN_ON(!vop->is_enabled))
+ return;
+
+ spin_lock_irqsave(&vop->irq_lock, flags);
+
+ vop_mask_write(vop, INTR_CTRL0, DSP_HOLD_VALID_INTR_MASK,
+ DSP_HOLD_VALID_INTR_EN(1));
+
+ spin_unlock_irqrestore(&vop->irq_lock, flags);
+}
+
+static void vop_dsp_hold_valid_irq_disable(struct vop *vop)
+{
+ unsigned long flags;
+
+ if (WARN_ON(!vop->is_enabled))
+ return;
+
+ spin_lock_irqsave(&vop->irq_lock, flags);
+
+ vop_mask_write(vop, INTR_CTRL0, DSP_HOLD_VALID_INTR_MASK,
+ DSP_HOLD_VALID_INTR_EN(0));
+
+ spin_unlock_irqrestore(&vop->irq_lock, flags);
+}
+
static void vop_enable(struct drm_crtc *crtc)
{
struct vop *vop = to_vop(crtc);
int ret;
+ if (vop->is_enabled)
+ return;
+
ret = clk_enable(vop->hclk);
if (ret < 0) {
dev_err(vop->dev, "failed to enable hclk - %d\n", ret);
@@ -417,6 +451,11 @@
goto err_disable_aclk;
}
+ /*
+ * At here, vop clock & iommu is enable, R/W vop regs would be safe.
+ */
+ vop->is_enabled = true;
+
spin_lock(&vop->reg_lock);
VOP_CTRL_SET(vop, standby, 0);
@@ -441,26 +480,41 @@
{
struct vop *vop = to_vop(crtc);
+ if (!vop->is_enabled)
+ return;
+
drm_vblank_off(crtc->dev, vop->pipe);
- disable_irq(vop->irq);
-
/*
- * TODO: Since standby doesn't take effect until the next vblank,
- * when we turn off dclk below, the vop is probably still active.
+ * Vop standby will take effect at end of current frame,
+ * if dsp hold valid irq happen, it means standby complete.
+ *
+ * we must wait standby complete when we want to disable aclk,
+ * if not, memory bus maybe dead.
*/
+ reinit_completion(&vop->dsp_hold_completion);
+ vop_dsp_hold_valid_irq_enable(vop);
+
spin_lock(&vop->reg_lock);
VOP_CTRL_SET(vop, standby, 1);
spin_unlock(&vop->reg_lock);
- /*
- * disable dclk to stop frame scan, so we can safely detach iommu,
- */
- clk_disable(vop->dclk);
+ wait_for_completion(&vop->dsp_hold_completion);
+
+ vop_dsp_hold_valid_irq_disable(vop);
+
+ disable_irq(vop->irq);
+
+ vop->is_enabled = false;
+
+ /*
+ * vop standby complete, so iommu detach is safe.
+ */
rockchip_drm_dma_detach_device(vop->drm_dev, vop->dev);
+ clk_disable(vop->dclk);
clk_disable(vop->aclk);
clk_disable(vop->hclk);
}
@@ -742,7 +796,7 @@
struct vop *vop = to_vop(crtc);
unsigned long flags;
- if (vop->dpms != DRM_MODE_DPMS_ON)
+ if (!vop->is_enabled)
return -EPERM;
spin_lock_irqsave(&vop->irq_lock, flags);
@@ -759,8 +813,9 @@
struct vop *vop = to_vop(crtc);
unsigned long flags;
- if (vop->dpms != DRM_MODE_DPMS_ON)
+ if (!vop->is_enabled)
return;
+
spin_lock_irqsave(&vop->irq_lock, flags);
vop_mask_write(vop, INTR_CTRL0, FS_INTR_MASK, FS_INTR_EN(0));
spin_unlock_irqrestore(&vop->irq_lock, flags);
@@ -773,15 +828,8 @@
static void vop_crtc_dpms(struct drm_crtc *crtc, int mode)
{
- struct vop *vop = to_vop(crtc);
-
DRM_DEBUG_KMS("crtc[%d] mode[%d]\n", crtc->base.id, mode);
- if (vop->dpms == mode) {
- DRM_DEBUG_KMS("desired dpms mode is same as previous one.\n");
- return;
- }
-
switch (mode) {
case DRM_MODE_DPMS_ON:
vop_enable(crtc);
@@ -795,8 +843,6 @@
DRM_DEBUG_KMS("unspecified mode %d\n", mode);
break;
}
-
- vop->dpms = mode;
}
static void vop_crtc_prepare(struct drm_crtc *crtc)
@@ -874,8 +920,8 @@
VOP_CTRL_SET(vop, out_mode, vop->connector_out_mode);
val = 0x8;
- val |= (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC) ? 1 : 0;
- val |= (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC) ? (1 << 1) : 0;
+ val |= (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC) ? 0 : 1;
+ val |= (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC) ? 0 : (1 << 1);
VOP_CTRL_SET(vop, pin_pol, val);
VOP_CTRL_SET(vop, htotal_pw, (htotal << 16) | hsync_len);
@@ -934,9 +980,9 @@
struct drm_framebuffer *old_fb = crtc->primary->fb;
int ret;
- /* when the page flip is requested, crtc's dpms should be on */
- if (vop->dpms > DRM_MODE_DPMS_ON) {
- DRM_DEBUG("failed page flip request at dpms[%d].\n", vop->dpms);
+ /* when the page flip is requested, crtc should be on */
+ if (!vop->is_enabled) {
+ DRM_DEBUG("page flip request rejected because crtc is off.\n");
return 0;
}
@@ -1081,6 +1127,7 @@
struct vop *vop = data;
uint32_t intr0_reg, active_irqs;
unsigned long flags;
+ int ret = IRQ_NONE;
/*
* INTR_CTRL0 register has interrupt status, enable and clear bits, we
@@ -1099,15 +1146,23 @@
if (!active_irqs)
return IRQ_NONE;
- /* Only Frame Start Interrupt is enabled; other irqs are spurious. */
- if (!(active_irqs & FS_INTR)) {
- DRM_ERROR("Unknown VOP IRQs: %#02x\n", active_irqs);
- return IRQ_NONE;
+ if (active_irqs & DSP_HOLD_VALID_INTR) {
+ complete(&vop->dsp_hold_completion);
+ active_irqs &= ~DSP_HOLD_VALID_INTR;
+ ret = IRQ_HANDLED;
}
- drm_handle_vblank(vop->drm_dev, vop->pipe);
+ if (active_irqs & FS_INTR) {
+ drm_handle_vblank(vop->drm_dev, vop->pipe);
+ active_irqs &= ~FS_INTR;
+ ret = (vop->vsync_work_pending) ? IRQ_WAKE_THREAD : IRQ_HANDLED;
+ }
- return (vop->vsync_work_pending) ? IRQ_WAKE_THREAD : IRQ_HANDLED;
+ /* Unhandled irqs are spurious. */
+ if (active_irqs)
+ DRM_ERROR("Unknown VOP IRQs: %#02x\n", active_irqs);
+
+ return ret;
}
static int vop_create_crtc(struct vop *vop)
@@ -1189,6 +1244,7 @@
goto err_cleanup_crtc;
}
+ init_completion(&vop->dsp_hold_completion);
crtc->port = port;
vop->pipe = drm_crtc_index(crtc);
rockchip_register_crtc_funcs(drm_dev, &private_crtc_funcs, vop->pipe);
@@ -1302,7 +1358,7 @@
clk_disable(vop->hclk);
- vop->dpms = DRM_MODE_DPMS_OFF;
+ vop->is_enabled = false;
return 0;