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Merge branch 'drm_next' of https://github.com/markyzq/kernel-drm-rockchip into drm-next

Browse Source 
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
This commit is contained in:
Dave Airlie 2015-03-19 14:05:53 +10:00
commit 6b94aea01d
4 changed files with 103 additions and 39 deletions
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2
drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c
View File

@ -71,7 +71,7 @@ static int rockchip_drm_fbdev_create(struct drm_fb_helper *helper,
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;

17
drivers/gpu/drm/rockchip/rockchip_drm_gem.c
View File

@ -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 @@ static int rockchip_gem_alloc_buf(struct rockchip_gem_object *rk_obj)
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 @@ int rockchip_gem_mmap(struct file *filp, 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)
{
struct rockchip_gem_object *rk_obj;
struct drm_gem_object *obj;
@ -119,7 +123,7 @@ struct rockchip_gem_object *
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 @@ rockchip_gem_create_with_handle(struct drm_file *file_priv,
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 @@ void *rockchip_gem_prime_vmap(struct drm_gem_object *obj)
{
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;
}

3
drivers/gpu/drm/rockchip/rockchip_drm_gem.h
View File

@ -41,7 +41,8 @@ int rockchip_gem_mmap_buf(struct drm_gem_object *obj,
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);

120
drivers/gpu/drm/rockchip/rockchip_drm_vop.c
View File

@ -81,7 +81,7 @@ struct vop {
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 @@ struct vop {
/* 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 bool is_alpha_support(uint32_t format)
}
}
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 @@ static void vop_enable(struct drm_crtc *crtc)
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 @@ static void vop_disable(struct drm_crtc *crtc)
{
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 @@ static int vop_crtc_enable_vblank(struct drm_crtc *crtc)
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 @@ static void vop_crtc_disable_vblank(struct drm_crtc *crtc)
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 const struct rockchip_crtc_funcs private_crtc_funcs = {
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 @@ static void vop_crtc_dpms(struct drm_crtc *crtc, int mode)
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 @@ static int vop_crtc_mode_set(struct drm_crtc *crtc,
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 @@ static int vop_crtc_page_flip(struct drm_crtc *crtc,
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 @@ static irqreturn_t vop_isr(int irq, void *data)
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 @@ static irqreturn_t vop_isr(int irq, void *data)
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 @@ static int vop_create_crtc(struct vop *vop)
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 @@ static int vop_initial(struct vop *vop)
clk_disable(vop->hclk);
vop->dpms = DRM_MODE_DPMS_OFF;
vop->is_enabled = false;
return 0;