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gpu: ipu-v3: add unsynchronised DP channel disabling 

When disabling the foreground DP channel during a modeset, the DC is
already disabled without waiting for end of frame. There is no reason
to wait for a frame boundary before updating the DP registers in that
case.
Add support to apply updates immediately. No functional changes, yet.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
This commit is contained in:
Philipp Zabel 2017-02-24 18:23:55 +01:00
parent 2212a780b9
commit f9bb7acb9b
5 changed files with 19 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/imx/ipuv3-plane.c
View File

@ -181,7 +181,7 @@ static int ipu_disable_plane(struct drm_plane *plane)
ipu_idmac_wait_busy(ipu_plane->ipu_ch, 50);
if (ipu_plane->dp)
ipu_dp_disable_channel(ipu_plane->dp);
ipu_dp_disable_channel(ipu_plane->dp, true);
ipu_idmac_disable_channel(ipu_plane->ipu_ch);
ipu_dmfc_disable_channel(ipu_plane->dmfc);
if (ipu_plane->dp)

8
drivers/gpu/ipu-v3/ipu-common.c
View File

@ -51,15 +51,17 @@ int ipu_get_num(struct ipu_soc *ipu)
}
EXPORT_SYMBOL_GPL(ipu_get_num);
void ipu_srm_dp_sync_update(struct ipu_soc *ipu)
void ipu_srm_dp_update(struct ipu_soc *ipu, bool sync)
{
u32 val;
val = ipu_cm_read(ipu, IPU_SRM_PRI2);
val |= 0x8;
val &= ~DP_S_SRM_MODE_MASK;
val |= sync ? DP_S_SRM_MODE_NEXT_FRAME :
DP_S_SRM_MODE_NOW;
ipu_cm_write(ipu, val, IPU_SRM_PRI2);
}
EXPORT_SYMBOL_GPL(ipu_srm_dp_sync_update);
EXPORT_SYMBOL_GPL(ipu_srm_dp_update);
enum ipu_color_space ipu_drm_fourcc_to_colorspace(u32 drm_fourcc)
{

12
drivers/gpu/ipu-v3/ipu-dp.c
View File

@ -112,7 +112,7 @@ int ipu_dp_set_global_alpha(struct ipu_dp *dp, bool enable,
writel(reg & ~DP_COM_CONF_GWAM, flow->base + DP_COM_CONF);
}
ipu_srm_dp_sync_update(priv->ipu);
ipu_srm_dp_update(priv->ipu, true);
mutex_unlock(&priv->mutex);
@ -127,7 +127,7 @@ int ipu_dp_set_window_pos(struct ipu_dp *dp, u16 x_pos, u16 y_pos)
writel((x_pos << 16) | y_pos, flow->base + DP_FG_POS);
ipu_srm_dp_sync_update(priv->ipu);
ipu_srm_dp_update(priv->ipu, true);
return 0;
}
@ -207,7 +207,7 @@ int ipu_dp_setup_channel(struct ipu_dp *dp,
flow->out_cs, DP_COM_CONF_CSC_DEF_FG);
}
ipu_srm_dp_sync_update(priv->ipu);
ipu_srm_dp_update(priv->ipu, true);
mutex_unlock(&priv->mutex);
@ -247,7 +247,7 @@ int ipu_dp_enable_channel(struct ipu_dp *dp)
reg |= DP_COM_CONF_FG_EN;
writel(reg, flow->base + DP_COM_CONF);
ipu_srm_dp_sync_update(priv->ipu);
ipu_srm_dp_update(priv->ipu, true);
mutex_unlock(&priv->mutex);
@ -255,7 +255,7 @@ int ipu_dp_enable_channel(struct ipu_dp *dp)
}
EXPORT_SYMBOL_GPL(ipu_dp_enable_channel);
void ipu_dp_disable_channel(struct ipu_dp *dp)
void ipu_dp_disable_channel(struct ipu_dp *dp, bool sync)
{
struct ipu_flow *flow = to_flow(dp);
struct ipu_dp_priv *priv = flow->priv;
@ -275,7 +275,7 @@ void ipu_dp_disable_channel(struct ipu_dp *dp)
writel(reg, flow->base + DP_COM_CONF);
writel(0, flow->base + DP_FG_POS);
ipu_srm_dp_sync_update(priv->ipu);
ipu_srm_dp_update(priv->ipu, sync);
if (ipu_idmac_channel_busy(priv->ipu, IPUV3_CHANNEL_MEM_BG_SYNC))
ipu_wait_interrupt(priv->ipu, IPU_IRQ_DP_SF_END, 50);

7
drivers/gpu/ipu-v3/ipu-prv.h
View File

@ -75,6 +75,11 @@ struct ipu_soc;
#define IPU_INT_CTRL(n) IPU_CM_REG(0x003C + 4 * (n))
#define IPU_INT_STAT(n) IPU_CM_REG(0x0200 + 4 * (n))
/* SRM_PRI2 */
#define DP_S_SRM_MODE_MASK (0x3 << 3)
#define DP_S_SRM_MODE_NOW (0x3 << 3)
#define DP_S_SRM_MODE_NEXT_FRAME (0x1 << 3)
/* FS_PROC_FLOW1 */
#define FS_PRPENC_ROT_SRC_SEL_MASK (0xf << 0)
#define FS_PRPENC_ROT_SRC_SEL_ENC (0x7 << 0)
@ -215,7 +220,7 @@ static inline void ipu_idmac_write(struct ipu_soc *ipu, u32 value,
writel(value, ipu->idmac_reg + offset);
}
void ipu_srm_dp_sync_update(struct ipu_soc *ipu);
void ipu_srm_dp_update(struct ipu_soc *ipu, bool sync);
int ipu_module_enable(struct ipu_soc *ipu, u32 mask);
int ipu_module_disable(struct ipu_soc *ipu, u32 mask);

2
include/video/imx-ipu-v3.h
View File

@ -300,7 +300,7 @@ struct ipu_dp *ipu_dp_get(struct ipu_soc *ipu, unsigned int flow);
void ipu_dp_put(struct ipu_dp *);
int ipu_dp_enable(struct ipu_soc *ipu);
int ipu_dp_enable_channel(struct ipu_dp *dp);
void ipu_dp_disable_channel(struct ipu_dp *dp);
void ipu_dp_disable_channel(struct ipu_dp *dp, bool sync);
void ipu_dp_disable(struct ipu_soc *ipu);
int ipu_dp_setup_channel(struct ipu_dp *dp,
enum ipu_color_space in, enum ipu_color_space out);