Create a struct to represent MDP5 Layer Mixer instances. This will
eventually allow us to detach CRTCs from the Layer Mixers, and
generally clean things up a bit.
This is very similar to how hwpipes were previously abstracted away
from drm planes.
Signed-off-by: Archit Taneja <architt@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/msm/Makefile | 1 +
drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c | 33 +++++++++++++++++++++++
drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h | 4 +++
drivers/gpu/drm/msm/mdp/mdp5/mdp5_mixer.c | 44 +++++++++++++++++++++++++++++++
drivers/gpu/drm/msm/mdp/mdp5/mdp5_mixer.h | 37 ++++++++++++++++++++++++++
5 files changed, 119 insertions(+)
create mode 100644 drivers/gpu/drm/msm/mdp/mdp5/mdp5_mixer.c
create mode 100644 drivers/gpu/drm/msm/mdp/mdp5/mdp5_mixer.h
diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile
index 39055362da95..5241ac8803ba 100644
--- a/drivers/gpu/drm/msm/Makefile
+++ b/drivers/gpu/drm/msm/Makefile
@@ -40,6 +40,7 @@ msm-y := \
mdp/mdp5/mdp5_mdss.o \
mdp/mdp5/mdp5_kms.o \
mdp/mdp5/mdp5_pipe.o \
+ mdp/mdp5/mdp5_mixer.o \
mdp/mdp5/mdp5_plane.o \
mdp/mdp5/mdp5_smp.o \
msm_atomic.o \
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
index 9d21317b2cc3..c55ba6e8387c 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
@@ -162,6 +162,9 @@ static void mdp5_kms_destroy(struct msm_kms *kms)
struct msm_gem_address_space *aspace = mdp5_kms->aspace;
int i;
+ for (i = 0; i < mdp5_kms->num_hwmixers; i++)
+ mdp5_mixer_destroy(mdp5_kms->hwmixers[i]);
+
for (i = 0; i < mdp5_kms->num_hwpipes; i++)
mdp5_pipe_destroy(mdp5_kms->hwpipes[i]);
@@ -868,6 +871,32 @@ static int hwpipe_init(struct mdp5_kms *mdp5_kms)
return 0;
}
+static int hwmixer_init(struct mdp5_kms *mdp5_kms)
+{
+ struct drm_device *dev = mdp5_kms->dev;
+ const struct mdp5_cfg_hw *hw_cfg;
+ int i, ret;
+
+ hw_cfg = mdp5_cfg_get_hw_config(mdp5_kms->cfg);
+
+ for (i = 0; i < hw_cfg->lm.count; i++) {
+ struct mdp5_hw_mixer *mixer;
+
+ mixer = mdp5_mixer_init(&hw_cfg->lm.instances[i]);
+ if (IS_ERR(mixer)) {
+ ret = PTR_ERR(mixer);
+ dev_err(dev->dev, "failed to construct LM%d (%d)\n",
+ i, ret);
+ return ret;
+ }
+
+ mixer->idx = mdp5_kms->num_hwmixers;
+ mdp5_kms->hwmixers[mdp5_kms->num_hwmixers++] = mixer;
+ }
+
+ return 0;
+}
+
static int mdp5_init(struct platform_device *pdev, struct drm_device *dev)
{
struct msm_drm_private *priv = dev->dev_private;
@@ -980,6 +1009,10 @@ static int mdp5_init(struct platform_device *pdev, struct drm_device *dev)
if (ret)
goto fail;
+ ret = hwmixer_init(mdp5_kms);
+ if (ret)
+ goto fail;
+
/* set uninit-ed kms */
priv->kms = &mdp5_kms->base.base;
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h
index 9258871d879c..f3a3b767e35c 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h
@@ -25,6 +25,7 @@
#include "mdp5.xml.h"
#include "mdp5_ctl.h"
#include "mdp5_pipe.h"
+#include "mdp5_mixer.h"
#include "mdp5_smp.h"
struct mdp5_state;
@@ -39,6 +40,9 @@ struct mdp5_kms {
unsigned num_hwpipes;
struct mdp5_hw_pipe *hwpipes[SSPP_MAX];
+ unsigned num_hwmixers;
+ struct mdp5_hw_mixer *hwmixers[8];
+
struct mdp5_cfg_handler *cfg;
uint32_t caps; /* MDP capabilities (MDP_CAP_XXX bits) */
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_mixer.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_mixer.c
new file mode 100644
index 000000000000..dd38f0bc2494
--- /dev/null
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_mixer.c
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2017 The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "mdp5_kms.h"
+
+void mdp5_mixer_destroy(struct mdp5_hw_mixer *mixer)
+{
+ kfree(mixer);
+}
+
+static const char * const mixer_names[] = {
+ "LM0", "LM1", "LM2", "LM3", "LM4", "LM5",
+};
+
+struct mdp5_hw_mixer *mdp5_mixer_init(const struct mdp5_lm_instance *lm)
+{
+ struct mdp5_hw_mixer *mixer;
+
+ mixer = kzalloc(sizeof(*mixer), GFP_KERNEL);
+ if (!mixer)
+ return ERR_PTR(-ENOMEM);
+
+ mixer->name = mixer_names[lm->id];
+ mixer->lm = lm->id;
+ mixer->caps = lm->caps;
+ mixer->pp = lm->pp;
+ mixer->dspp = lm->dspp;
+ mixer->flush_mask = mdp_ctl_flush_mask_lm(lm->id);
+
+ return mixer;
+}
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_mixer.h b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_mixer.h
new file mode 100644
index 000000000000..08d2173703bf
--- /dev/null
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_mixer.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2017 The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __MDP5_LM_H__
+#define __MDP5_LM_H__
+
+/* represents a hw Layer Mixer, one (or more) is dynamically assigned to a crtc */
+struct mdp5_hw_mixer {
+ int idx;
+
+ const char *name;
+
+ int lm; /* the LM instance # */
+ uint32_t caps;
+ int pp;
+ int dspp;
+
+ uint32_t flush_mask; /* used to commit LM registers */
+};
+
+struct mdp5_hw_mixer *mdp5_mixer_init(const struct mdp5_lm_instance *lm);
+void mdp5_mixer_destroy(struct mdp5_hw_mixer *lm);
+
+#endif /* __MDP5_LM_H__ */
--
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