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kernel / pub / scm / linux / kernel / git / ltsi / ltsi-kernel / refs/tags/v3.10.31-ltsi / . / patches.renesas / 0023-drm-rcar-du-Introduce-CRTCs-groups.patch
blob: ca56d8965609d714885fb67547295d7069b29a40 [file] [log] [blame]
From 62db4469a68f3aa96132071ada5e265987c7900a Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Date: Sun, 16 Jun 2013 21:01:02 +0200
Subject: drm/rcar-du: Introduce CRTCs groups
The R8A7779 DU is split in per-CRTC resources (scan-out engine, blending
unit, timings generator, ...) and device-global resources (start/stop
control, planes, ...) shared between the two CRTCs.
The R8A7790 introduced a third CRTC with its own set of global resources
This would be modeled as two separate DU device instances if it wasn't
for a handful or resources that are shared between the three CRTCs
(mostly related to input and output routing). For this reason the
R8A7790 DU must be modeled as a single device with three CRTCs, two sets
of "semi-global" resources, and a few device-global resources.
Introduce a new rcar_du_group driver-specific object, without any real
counterpart in the DU documentation, that models those semi-global
resources.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
(cherry picked from commit cb2025d2509ffab1c426509fd9de3d83e40398b9)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
drivers/gpu/drm/rcar-du/Makefile | 1 +
drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 92 ++++++-------------
drivers/gpu/drm/rcar-du/rcar_du_crtc.h | 5 +-
drivers/gpu/drm/rcar-du/rcar_du_drv.c | 46 ----------
drivers/gpu/drm/rcar-du/rcar_du_drv.h | 10 +--
drivers/gpu/drm/rcar-du/rcar_du_group.c | 127 ++++++++++++++++++++++++++
drivers/gpu/drm/rcar-du/rcar_du_group.h | 47 ++++++++++
drivers/gpu/drm/rcar-du/rcar_du_kms.c | 11 ++-
drivers/gpu/drm/rcar-du/rcar_du_plane.c | 155 ++++++++++++++++----------------
drivers/gpu/drm/rcar-du/rcar_du_plane.h | 8 +-
10 files changed, 299 insertions(+), 203 deletions(-)
create mode 100644 drivers/gpu/drm/rcar-du/rcar_du_group.c
create mode 100644 drivers/gpu/drm/rcar-du/rcar_du_group.h
diff --git a/drivers/gpu/drm/rcar-du/Makefile b/drivers/gpu/drm/rcar-du/Makefile
index 57b0fe1fa66e..b9b5e666fbba 100644
--- a/drivers/gpu/drm/rcar-du/Makefile
+++ b/drivers/gpu/drm/rcar-du/Makefile
@@ -1,6 +1,7 @@
rcar-du-drm-y := rcar_du_crtc.o \
rcar_du_drv.o \
rcar_du_encoder.o \
+ rcar_du_group.o \
rcar_du_kms.o \
rcar_du_lvdscon.o \
rcar_du_plane.o \
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
index 03dd7018dde8..7784a3ba7854 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
@@ -30,21 +30,21 @@
static u32 rcar_du_crtc_read(struct rcar_du_crtc *rcrtc, u32 reg)
{
- struct rcar_du_device *rcdu = rcrtc->crtc.dev->dev_private;
+ struct rcar_du_device *rcdu = rcrtc->group->dev;
return rcar_du_read(rcdu, rcrtc->mmio_offset + reg);
}
static void rcar_du_crtc_write(struct rcar_du_crtc *rcrtc, u32 reg, u32 data)
{
- struct rcar_du_device *rcdu = rcrtc->crtc.dev->dev_private;
+ struct rcar_du_device *rcdu = rcrtc->group->dev;
rcar_du_write(rcdu, rcrtc->mmio_offset + reg, data);
}
static void rcar_du_crtc_clr(struct rcar_du_crtc *rcrtc, u32 reg, u32 clr)
{
- struct rcar_du_device *rcdu = rcrtc->crtc.dev->dev_private;
+ struct rcar_du_device *rcdu = rcrtc->group->dev;
rcar_du_write(rcdu, rcrtc->mmio_offset + reg,
rcar_du_read(rcdu, rcrtc->mmio_offset + reg) & ~clr);
@@ -52,7 +52,7 @@ static void rcar_du_crtc_clr(struct rcar_du_crtc *rcrtc, u32 reg, u32 clr)
static void rcar_du_crtc_set(struct rcar_du_crtc *rcrtc, u32 reg, u32 set)
{
- struct rcar_du_device *rcdu = rcrtc->crtc.dev->dev_private;
+ struct rcar_du_device *rcdu = rcrtc->group->dev;
rcar_du_write(rcdu, rcrtc->mmio_offset + reg,
rcar_du_read(rcdu, rcrtc->mmio_offset + reg) | set);
@@ -61,7 +61,7 @@ static void rcar_du_crtc_set(struct rcar_du_crtc *rcrtc, u32 reg, u32 set)
static void rcar_du_crtc_clr_set(struct rcar_du_crtc *rcrtc, u32 reg,
u32 clr, u32 set)
{
- struct rcar_du_device *rcdu = rcrtc->crtc.dev->dev_private;
+ struct rcar_du_device *rcdu = rcrtc->group->dev;
u32 value = rcar_du_read(rcdu, rcrtc->mmio_offset + reg);
rcar_du_write(rcdu, rcrtc->mmio_offset + reg, (value & ~clr) | set);
@@ -69,14 +69,13 @@ static void rcar_du_crtc_clr_set(struct rcar_du_crtc *rcrtc, u32 reg,
static int rcar_du_crtc_get(struct rcar_du_crtc *rcrtc)
{
- struct rcar_du_device *rcdu = rcrtc->crtc.dev->dev_private;
int ret;
ret = clk_prepare_enable(rcrtc->clock);
if (ret < 0)
return ret;
- ret = rcar_du_get(rcdu);
+ ret = rcar_du_group_get(rcrtc->group);
if (ret < 0)
clk_disable_unprepare(rcrtc->clock);
@@ -85,17 +84,14 @@ static int rcar_du_crtc_get(struct rcar_du_crtc *rcrtc)
static void rcar_du_crtc_put(struct rcar_du_crtc *rcrtc)
{
- struct rcar_du_device *rcdu = rcrtc->crtc.dev->dev_private;
-
- rcar_du_put(rcdu);
+ rcar_du_group_put(rcrtc->group);
clk_disable_unprepare(rcrtc->clock);
}
static void rcar_du_crtc_set_display_timing(struct rcar_du_crtc *rcrtc)
{
- struct drm_crtc *crtc = &rcrtc->crtc;
- struct rcar_du_device *rcdu = crtc->dev->dev_private;
- const struct drm_display_mode *mode = &crtc->mode;
+ const struct drm_display_mode *mode = &rcrtc->crtc.mode;
+ struct rcar_du_device *rcdu = rcrtc->group->dev;
unsigned long clk;
u32 value;
u32 div;
@@ -136,7 +132,7 @@ static void rcar_du_crtc_set_display_timing(struct rcar_du_crtc *rcrtc)
static void rcar_du_crtc_set_routing(struct rcar_du_crtc *rcrtc)
{
- struct rcar_du_device *rcdu = rcrtc->crtc.dev->dev_private;
+ struct rcar_du_device *rcdu = rcrtc->group->dev;
u32 dorcr = rcar_du_read(rcdu, DORCR);
dorcr &= ~(DORCR_PG2T | DORCR_DK2S | DORCR_PG2D_MASK);
@@ -153,36 +149,6 @@ static void rcar_du_crtc_set_routing(struct rcar_du_crtc *rcrtc)
rcar_du_write(rcdu, DORCR, dorcr);
}
-static void __rcar_du_start_stop(struct rcar_du_device *rcdu, bool start)
-{
- rcar_du_write(rcdu, DSYSR,
- (rcar_du_read(rcdu, DSYSR) & ~(DSYSR_DRES | DSYSR_DEN)) |
- (start ? DSYSR_DEN : DSYSR_DRES));
-}
-
-static void rcar_du_start_stop(struct rcar_du_device *rcdu, bool start)
-{
- /* Many of the configuration bits are only updated when the display
- * reset (DRES) bit in DSYSR is set to 1, disabling *both* CRTCs. Some
- * of those bits could be pre-configured, but others (especially the
- * bits related to plane assignment to display timing controllers) need
- * to be modified at runtime.
- *
- * Restart the display controller if a start is requested. Sorry for the
- * flicker. It should be possible to move most of the "DRES-update" bits
- * setup to driver initialization time and minimize the number of cases
- * when the display controller will have to be restarted.
- */
- if (start) {
- if (rcdu->used_crtcs++ != 0)
- __rcar_du_start_stop(rcdu, false);
- __rcar_du_start_stop(rcdu, true);
- } else {
- if (--rcdu->used_crtcs == 0)
- __rcar_du_start_stop(rcdu, false);
- }
-}
-
void rcar_du_crtc_route_output(struct drm_crtc *crtc, unsigned int output)
{
struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
@@ -195,8 +161,8 @@ void rcar_du_crtc_route_output(struct drm_crtc *crtc, unsigned int output)
void rcar_du_crtc_update_planes(struct drm_crtc *crtc)
{
- struct rcar_du_device *rcdu = crtc->dev->dev_private;
struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
+ struct rcar_du_device *rcdu = rcrtc->group->dev;
struct rcar_du_plane *planes[RCAR_DU_NUM_HW_PLANES];
unsigned int num_planes = 0;
unsigned int prio = 0;
@@ -204,8 +170,8 @@ void rcar_du_crtc_update_planes(struct drm_crtc *crtc)
u32 dptsr = 0;
u32 dspr = 0;
- for (i = 0; i < ARRAY_SIZE(rcdu->planes.planes); ++i) {
- struct rcar_du_plane *plane = &rcdu->planes.planes[i];
+ for (i = 0; i < ARRAY_SIZE(rcrtc->group->planes.planes); ++i) {
+ struct rcar_du_plane *plane = &rcrtc->group->planes.planes[i];
unsigned int j;
if (plane->crtc != &rcrtc->crtc || !plane->enabled)
@@ -254,10 +220,8 @@ void rcar_du_crtc_update_planes(struct drm_crtc *crtc)
*/
if (value != dptsr) {
rcar_du_write(rcdu, DPTSR, dptsr);
- if (rcdu->used_crtcs) {
- __rcar_du_start_stop(rcdu, false);
- __rcar_du_start_stop(rcdu, true);
- }
+ if (rcrtc->group->used_crtcs)
+ rcar_du_group_restart(rcrtc->group);
}
}
@@ -267,7 +231,6 @@ void rcar_du_crtc_update_planes(struct drm_crtc *crtc)
static void rcar_du_crtc_start(struct rcar_du_crtc *rcrtc)
{
struct drm_crtc *crtc = &rcrtc->crtc;
- struct rcar_du_device *rcdu = crtc->dev->dev_private;
unsigned int i;
if (rcrtc->started)
@@ -284,14 +247,14 @@ static void rcar_du_crtc_start(struct rcar_du_crtc *rcrtc)
rcar_du_crtc_set_display_timing(rcrtc);
rcar_du_crtc_set_routing(rcrtc);
- mutex_lock(&rcdu->planes.lock);
+ mutex_lock(&rcrtc->group->planes.lock);
rcrtc->plane->enabled = true;
rcar_du_crtc_update_planes(crtc);
- mutex_unlock(&rcdu->planes.lock);
+ mutex_unlock(&rcrtc->group->planes.lock);
/* Setup planes. */
- for (i = 0; i < ARRAY_SIZE(rcdu->planes.planes); ++i) {
- struct rcar_du_plane *plane = &rcdu->planes.planes[i];
+ for (i = 0; i < ARRAY_SIZE(rcrtc->group->planes.planes); ++i) {
+ struct rcar_du_plane *plane = &rcrtc->group->planes.planes[i];
if (plane->crtc != crtc || !plane->enabled)
continue;
@@ -305,7 +268,7 @@ static void rcar_du_crtc_start(struct rcar_du_crtc *rcrtc)
*/
rcar_du_crtc_clr_set(rcrtc, DSYSR, DSYSR_TVM_MASK, DSYSR_TVM_MASTER);
- rcar_du_start_stop(rcdu, true);
+ rcar_du_group_start_stop(rcrtc->group, true);
rcrtc->started = true;
}
@@ -313,22 +276,21 @@ static void rcar_du_crtc_start(struct rcar_du_crtc *rcrtc)
static void rcar_du_crtc_stop(struct rcar_du_crtc *rcrtc)
{
struct drm_crtc *crtc = &rcrtc->crtc;
- struct rcar_du_device *rcdu = crtc->dev->dev_private;
if (!rcrtc->started)
return;
- mutex_lock(&rcdu->planes.lock);
+ mutex_lock(&rcrtc->group->planes.lock);
rcrtc->plane->enabled = false;
rcar_du_crtc_update_planes(crtc);
- mutex_unlock(&rcdu->planes.lock);
+ mutex_unlock(&rcrtc->group->planes.lock);
/* Select switch sync mode. This stops display operation and configures
* the HSYNC and VSYNC signals as inputs.
*/
rcar_du_crtc_clr_set(rcrtc, DSYSR, DSYSR_TVM_MASK, DSYSR_TVM_SWITCH);
- rcar_du_start_stop(rcdu, false);
+ rcar_du_group_start_stop(rcrtc->group, false);
rcrtc->started = false;
}
@@ -406,8 +368,8 @@ static int rcar_du_crtc_mode_set(struct drm_crtc *crtc,
int x, int y,
struct drm_framebuffer *old_fb)
{
- struct rcar_du_device *rcdu = crtc->dev->dev_private;
struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
+ struct rcar_du_device *rcdu = rcrtc->group->dev;
const struct rcar_du_format_info *format;
int ret;
@@ -583,8 +545,9 @@ static const struct drm_crtc_funcs crtc_funcs = {
.page_flip = rcar_du_crtc_page_flip,
};
-int rcar_du_crtc_create(struct rcar_du_device *rcdu, unsigned int index)
+int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int index)
{
+ struct rcar_du_device *rcdu = rgrp->dev;
struct platform_device *pdev = to_platform_device(rcdu->dev);
struct rcar_du_crtc *rcrtc = &rcdu->crtcs[index];
struct drm_crtc *crtc = &rcrtc->crtc;
@@ -608,10 +571,11 @@ int rcar_du_crtc_create(struct rcar_du_device *rcdu, unsigned int index)
return PTR_ERR(rcrtc->clock);
}
+ rcrtc->group = rgrp;
rcrtc->mmio_offset = index ? DISP2_REG_OFFSET : 0;
rcrtc->index = index;
rcrtc->dpms = DRM_MODE_DPMS_OFF;
- rcrtc->plane = &rcdu->planes.planes[index];
+ rcrtc->plane = &rgrp->planes.planes[index];
rcrtc->plane->crtc = crtc;
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.h b/drivers/gpu/drm/rcar-du/rcar_du_crtc.h
index 5b69e98a3b92..542a7feceb20 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.h
@@ -19,7 +19,7 @@
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
-struct rcar_du_device;
+struct rcar_du_group;
struct rcar_du_plane;
struct rcar_du_crtc {
@@ -34,10 +34,11 @@ struct rcar_du_crtc {
unsigned int outputs;
int dpms;
+ struct rcar_du_group *group;
struct rcar_du_plane *plane;
};
-int rcar_du_crtc_create(struct rcar_du_device *rcdu, unsigned int index);
+int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int index);
void rcar_du_crtc_enable_vblank(struct rcar_du_crtc *rcrtc, bool enable);
void rcar_du_crtc_cancel_page_flip(struct rcar_du_crtc *rcrtc,
struct drm_file *file);
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index 9b89dbf3fb32..8600b2b6aea4 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -29,52 +29,6 @@
#include "rcar_du_regs.h"
/* -----------------------------------------------------------------------------
- * Core device operations
- */
-
-/*
- * rcar_du_get - Acquire a reference to the DU
- *
- * Acquiring the first reference setups core registers. A reference must be
- * held before accessing any hardware registers.
- *
- * This function must be called with the DRM mode_config lock held.
- *
- * Return 0 in case of success or a negative error code otherwise.
- */
-int rcar_du_get(struct rcar_du_device *rcdu)
-{
- if (rcdu->use_count)
- goto done;
-
- /* Enable extended features */
- rcar_du_write(rcdu, DEFR, DEFR_CODE | DEFR_DEFE);
- rcar_du_write(rcdu, DEFR2, DEFR2_CODE | DEFR2_DEFE2G);
- rcar_du_write(rcdu, DEFR3, DEFR3_CODE | DEFR3_DEFE3);
- rcar_du_write(rcdu, DEFR4, DEFR4_CODE);
- rcar_du_write(rcdu, DEFR5, DEFR5_CODE | DEFR5_DEFE5);
-
- /* Use DS1PR and DS2PR to configure planes priorities and connects the
- * superposition 0 to DU0 pins. DU1 pins will be configured dynamically.
- */
- rcar_du_write(rcdu, DORCR, DORCR_PG1D_DS1 | DORCR_DPRS);
-
-done:
- rcdu->use_count++;
- return 0;
-}
-
-/*
- * rcar_du_put - Release a reference to the DU
- *
- * This function must be called with the DRM mode_config lock held.
- */
-void rcar_du_put(struct rcar_du_device *rcdu)
-{
- --rcdu->use_count;
-}
-
-/* -----------------------------------------------------------------------------
* DRM operations
*/
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.h b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
index 0305c21d71f3..5b57a2f9b52a 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
@@ -18,11 +18,12 @@
#include <linux/platform_data/rcar-du.h>
#include "rcar_du_crtc.h"
-#include "rcar_du_plane.h"
+#include "rcar_du_group.h"
struct clk;
struct device;
struct drm_device;
+struct rcar_du_device;
#define RCAR_DU_FEATURE_CRTC_IRQ_CLOCK (1 << 0) /* Per-CRTC IRQ and clock */
@@ -40,15 +41,13 @@ struct rcar_du_device {
const struct rcar_du_device_info *info;
void __iomem *mmio;
- unsigned int use_count;
struct drm_device *ddev;
struct rcar_du_crtc crtcs[2];
- unsigned int used_crtcs;
unsigned int num_crtcs;
- struct rcar_du_planes planes;
+ struct rcar_du_group group;
};
static inline bool rcar_du_has(struct rcar_du_device *rcdu,
@@ -57,9 +56,6 @@ static inline bool rcar_du_has(struct rcar_du_device *rcdu,
return rcdu->info->features & feature;
}
-int rcar_du_get(struct rcar_du_device *rcdu);
-void rcar_du_put(struct rcar_du_device *rcdu);
-
static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg)
{
return ioread32(rcdu->mmio + reg);
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_group.c b/drivers/gpu/drm/rcar-du/rcar_du_group.c
new file mode 100644
index 000000000000..625b9f446965
--- /dev/null
+++ b/drivers/gpu/drm/rcar-du/rcar_du_group.c
@@ -0,0 +1,127 @@
+/*
+ * rcar_du_group.c -- R-Car Display Unit Channels Pair
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+/*
+ * The R8A7779 DU is split in per-CRTC resources (scan-out engine, blending
+ * unit, timings generator, ...) and device-global resources (start/stop
+ * control, planes, ...) shared between the two CRTCs.
+ *
+ * The R8A7790 introduced a third CRTC with its own set of global resources.
+ * This would be modeled as two separate DU device instances if it wasn't for
+ * a handful or resources that are shared between the three CRTCs (mostly
+ * related to input and output routing). For this reason the R8A7790 DU must be
+ * modeled as a single device with three CRTCs, two sets of "semi-global"
+ * resources, and a few device-global resources.
+ *
+ * The rcar_du_group object is a driver specific object, without any real
+ * counterpart in the DU documentation, that models those semi-global resources.
+ */
+
+#include <linux/io.h>
+
+#include "rcar_du_drv.h"
+#include "rcar_du_group.h"
+#include "rcar_du_regs.h"
+
+static u32 rcar_du_group_read(struct rcar_du_group *rgrp, u32 reg)
+{
+ return rcar_du_read(rgrp->dev, rgrp->mmio_offset + reg);
+}
+
+static void rcar_du_group_write(struct rcar_du_group *rgrp, u32 reg, u32 data)
+{
+ rcar_du_write(rgrp->dev, rgrp->mmio_offset + reg, data);
+}
+
+static void rcar_du_group_setup(struct rcar_du_group *rgrp)
+{
+ /* Enable extended features */
+ rcar_du_group_write(rgrp, DEFR, DEFR_CODE | DEFR_DEFE);
+ rcar_du_group_write(rgrp, DEFR2, DEFR2_CODE | DEFR2_DEFE2G);
+ rcar_du_group_write(rgrp, DEFR3, DEFR3_CODE | DEFR3_DEFE3);
+ rcar_du_group_write(rgrp, DEFR4, DEFR4_CODE);
+ rcar_du_group_write(rgrp, DEFR5, DEFR5_CODE | DEFR5_DEFE5);
+
+ /* Use DS1PR and DS2PR to configure planes priorities and connects the
+ * superposition 0 to DU0 pins. DU1 pins will be configured dynamically.
+ */
+ rcar_du_group_write(rgrp, DORCR, DORCR_PG1D_DS1 | DORCR_DPRS);
+}
+
+/*
+ * rcar_du_group_get - Acquire a reference to the DU channels group
+ *
+ * Acquiring the first reference setups core registers. A reference must be held
+ * before accessing any hardware registers.
+ *
+ * This function must be called with the DRM mode_config lock held.
+ *
+ * Return 0 in case of success or a negative error code otherwise.
+ */
+int rcar_du_group_get(struct rcar_du_group *rgrp)
+{
+ if (rgrp->use_count)
+ goto done;
+
+ rcar_du_group_setup(rgrp);
+
+done:
+ rgrp->use_count++;
+ return 0;
+}
+
+/*
+ * rcar_du_group_put - Release a reference to the DU
+ *
+ * This function must be called with the DRM mode_config lock held.
+ */
+void rcar_du_group_put(struct rcar_du_group *rgrp)
+{
+ --rgrp->use_count;
+}
+
+static void __rcar_du_group_start_stop(struct rcar_du_group *rgrp, bool start)
+{
+ rcar_du_group_write(rgrp, DSYSR,
+ (rcar_du_group_read(rgrp, DSYSR) & ~(DSYSR_DRES | DSYSR_DEN)) |
+ (start ? DSYSR_DEN : DSYSR_DRES));
+}
+
+void rcar_du_group_start_stop(struct rcar_du_group *rgrp, bool start)
+{
+ /* Many of the configuration bits are only updated when the display
+ * reset (DRES) bit in DSYSR is set to 1, disabling *both* CRTCs. Some
+ * of those bits could be pre-configured, but others (especially the
+ * bits related to plane assignment to display timing controllers) need
+ * to be modified at runtime.
+ *
+ * Restart the display controller if a start is requested. Sorry for the
+ * flicker. It should be possible to move most of the "DRES-update" bits
+ * setup to driver initialization time and minimize the number of cases
+ * when the display controller will have to be restarted.
+ */
+ if (start) {
+ if (rgrp->used_crtcs++ != 0)
+ __rcar_du_group_start_stop(rgrp, false);
+ __rcar_du_group_start_stop(rgrp, true);
+ } else {
+ if (--rgrp->used_crtcs == 0)
+ __rcar_du_group_start_stop(rgrp, false);
+ }
+}
+
+void rcar_du_group_restart(struct rcar_du_group *rgrp)
+{
+ __rcar_du_group_start_stop(rgrp, false);
+ __rcar_du_group_start_stop(rgrp, true);
+}
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_group.h b/drivers/gpu/drm/rcar-du/rcar_du_group.h
new file mode 100644
index 000000000000..748331bbb8fe
--- /dev/null
+++ b/drivers/gpu/drm/rcar-du/rcar_du_group.h
@@ -0,0 +1,47 @@
+/*
+ * rcar_du_group.c -- R-Car Display Unit Planes and CRTCs Group
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __RCAR_DU_GROUP_H__
+#define __RCAR_DU_GROUP_H__
+
+#include "rcar_du_plane.h"
+
+struct rcar_du_device;
+
+/*
+ * struct rcar_du_group - CRTCs and planes group
+ * @dev: the DU device
+ * @mmio_offset: registers offset in the device memory map
+ * @index: group index
+ * @use_count: number of users of the group (rcar_du_group_(get|put))
+ * @used_crtcs: number of CRTCs currently in use
+ * @planes: planes handled by the group
+ */
+struct rcar_du_group {
+ struct rcar_du_device *dev;
+ unsigned int mmio_offset;
+ unsigned int index;
+
+ unsigned int use_count;
+ unsigned int used_crtcs;
+
+ struct rcar_du_planes planes;
+};
+
+int rcar_du_group_get(struct rcar_du_group *rgrp);
+void rcar_du_group_put(struct rcar_du_group *rgrp);
+void rcar_du_group_start_stop(struct rcar_du_group *rgrp, bool start);
+void rcar_du_group_restart(struct rcar_du_group *rgrp);
+
+
+#endif /* __RCAR_DU_GROUP_H__ */
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index a1343fbde57a..c32e0f9d4823 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -174,17 +174,20 @@ int rcar_du_modeset_init(struct rcar_du_device *rcdu)
rcdu->ddev->mode_config.max_height = 2047;
rcdu->ddev->mode_config.funcs = &rcar_du_mode_config_funcs;
- ret = rcar_du_planes_init(rcdu);
+ rcdu->group.dev = rcdu;
+ rcdu->group.index = 0;
+ rcdu->group.used_crtcs = 0;
+
+ ret = rcar_du_planes_init(&rcdu->group);
if (ret < 0)
return ret;
for (i = 0; i < ARRAY_SIZE(rcdu->crtcs); ++i) {
- ret = rcar_du_crtc_create(rcdu, i);
+ ret = rcar_du_crtc_create(&rcdu->group, i);
if (ret < 0)
return ret;
}
- rcdu->used_crtcs = 0;
rcdu->num_crtcs = i;
for (i = 0; i < rcdu->pdata->num_encoders; ++i) {
@@ -215,7 +218,7 @@ int rcar_du_modeset_init(struct rcar_du_device *rcdu)
encoder->possible_clones = 1 << 0;
}
- ret = rcar_du_planes_register(rcdu);
+ ret = rcar_du_planes_register(&rcdu->group);
if (ret < 0)
return ret;
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.c b/drivers/gpu/drm/rcar-du/rcar_du_plane.c
index 29f21477ef0e..1e9cf7c92f8e 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_plane.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.c
@@ -36,71 +36,73 @@ static inline struct rcar_du_plane *to_rcar_plane(struct drm_plane *plane)
return container_of(plane, struct rcar_du_kms_plane, plane)->hwplane;
}
-static u32 rcar_du_plane_read(struct rcar_du_device *rcdu,
+static u32 rcar_du_plane_read(struct rcar_du_group *rgrp,
unsigned int index, u32 reg)
{
- return rcar_du_read(rcdu, index * PLANE_OFF + reg);
+ return rcar_du_read(rgrp->dev,
+ rgrp->mmio_offset + index * PLANE_OFF + reg);
}
-static void rcar_du_plane_write(struct rcar_du_device *rcdu,
+static void rcar_du_plane_write(struct rcar_du_group *rgrp,
unsigned int index, u32 reg, u32 data)
{
- rcar_du_write(rcdu, index * PLANE_OFF + reg, data);
+ rcar_du_write(rgrp->dev, rgrp->mmio_offset + index * PLANE_OFF + reg,
+ data);
}
int rcar_du_plane_reserve(struct rcar_du_plane *plane,
const struct rcar_du_format_info *format)
{
- struct rcar_du_device *rcdu = plane->dev;
+ struct rcar_du_group *rgrp = plane->group;
unsigned int i;
int ret = -EBUSY;
- mutex_lock(&rcdu->planes.lock);
+ mutex_lock(&rgrp->planes.lock);
- for (i = 0; i < ARRAY_SIZE(rcdu->planes.planes); ++i) {
- if (!(rcdu->planes.free & (1 << i)))
+ for (i = 0; i < ARRAY_SIZE(rgrp->planes.planes); ++i) {
+ if (!(rgrp->planes.free & (1 << i)))
continue;
if (format->planes == 1 ||
- rcdu->planes.free & (1 << ((i + 1) % 8)))
+ rgrp->planes.free & (1 << ((i + 1) % 8)))
break;
}
- if (i == ARRAY_SIZE(rcdu->planes.planes))
+ if (i == ARRAY_SIZE(rgrp->planes.planes))
goto done;
- rcdu->planes.free &= ~(1 << i);
+ rgrp->planes.free &= ~(1 << i);
if (format->planes == 2)
- rcdu->planes.free &= ~(1 << ((i + 1) % 8));
+ rgrp->planes.free &= ~(1 << ((i + 1) % 8));
plane->hwindex = i;
ret = 0;
done:
- mutex_unlock(&rcdu->planes.lock);
+ mutex_unlock(&rgrp->planes.lock);
return ret;
}
void rcar_du_plane_release(struct rcar_du_plane *plane)
{
- struct rcar_du_device *rcdu = plane->dev;
+ struct rcar_du_group *rgrp = plane->group;
if (plane->hwindex == -1)
return;
- mutex_lock(&rcdu->planes.lock);
- rcdu->planes.free |= 1 << plane->hwindex;
+ mutex_lock(&rgrp->planes.lock);
+ rgrp->planes.free |= 1 << plane->hwindex;
if (plane->format->planes == 2)
- rcdu->planes.free |= 1 << ((plane->hwindex + 1) % 8);
- mutex_unlock(&rcdu->planes.lock);
+ rgrp->planes.free |= 1 << ((plane->hwindex + 1) % 8);
+ mutex_unlock(&rgrp->planes.lock);
plane->hwindex = -1;
}
void rcar_du_plane_update_base(struct rcar_du_plane *plane)
{
- struct rcar_du_device *rcdu = plane->dev;
+ struct rcar_du_group *rgrp = plane->group;
unsigned int index = plane->hwindex;
/* The Y position is expressed in raster line units and must be doubled
@@ -111,18 +113,18 @@ void rcar_du_plane_update_base(struct rcar_du_plane *plane)
* Similarly, for the second plane, NV12 and NV21 formats seem to
* require a halved Y position value.
*/
- rcar_du_plane_write(rcdu, index, PnSPXR, plane->src_x);
- rcar_du_plane_write(rcdu, index, PnSPYR, plane->src_y *
+ rcar_du_plane_write(rgrp, index, PnSPXR, plane->src_x);
+ rcar_du_plane_write(rgrp, index, PnSPYR, plane->src_y *
(plane->format->bpp == 32 ? 2 : 1));
- rcar_du_plane_write(rcdu, index, PnDSA0R, plane->dma[0]);
+ rcar_du_plane_write(rgrp, index, PnDSA0R, plane->dma[0]);
if (plane->format->planes == 2) {
index = (index + 1) % 8;
- rcar_du_plane_write(rcdu, index, PnSPXR, plane->src_x);
- rcar_du_plane_write(rcdu, index, PnSPYR, plane->src_y *
+ rcar_du_plane_write(rgrp, index, PnSPXR, plane->src_x);
+ rcar_du_plane_write(rgrp, index, PnSPYR, plane->src_y *
(plane->format->bpp == 16 ? 2 : 1) / 2);
- rcar_du_plane_write(rcdu, index, PnDSA0R, plane->dma[1]);
+ rcar_du_plane_write(rgrp, index, PnDSA0R, plane->dma[1]);
}
}
@@ -143,7 +145,7 @@ void rcar_du_plane_compute_base(struct rcar_du_plane *plane,
static void rcar_du_plane_setup_mode(struct rcar_du_plane *plane,
unsigned int index)
{
- struct rcar_du_device *rcdu = plane->dev;
+ struct rcar_du_group *rgrp = plane->group;
u32 colorkey;
u32 pnmr;
@@ -157,9 +159,9 @@ static void rcar_du_plane_setup_mode(struct rcar_du_plane *plane,
* enable alpha-blending regardless of the X bit value.
*/
if (plane->format->fourcc != DRM_FORMAT_XRGB1555)
- rcar_du_plane_write(rcdu, index, PnALPHAR, PnALPHAR_ABIT_0);
+ rcar_du_plane_write(rgrp, index, PnALPHAR, PnALPHAR_ABIT_0);
else
- rcar_du_plane_write(rcdu, index, PnALPHAR,
+ rcar_du_plane_write(rgrp, index, PnALPHAR,
PnALPHAR_ABIT_X | plane->alpha);
pnmr = PnMR_BM_MD | plane->format->pnmr;
@@ -175,14 +177,14 @@ static void rcar_du_plane_setup_mode(struct rcar_du_plane *plane,
if (plane->format->fourcc == DRM_FORMAT_YUYV)
pnmr |= PnMR_YCDF_YUYV;
- rcar_du_plane_write(rcdu, index, PnMR, pnmr);
+ rcar_du_plane_write(rgrp, index, PnMR, pnmr);
switch (plane->format->fourcc) {
case DRM_FORMAT_RGB565:
colorkey = ((plane->colorkey & 0xf80000) >> 8)
| ((plane->colorkey & 0x00fc00) >> 5)
| ((plane->colorkey & 0x0000f8) >> 3);
- rcar_du_plane_write(rcdu, index, PnTC2R, colorkey);
+ rcar_du_plane_write(rgrp, index, PnTC2R, colorkey);
break;
case DRM_FORMAT_ARGB1555:
@@ -190,12 +192,12 @@ static void rcar_du_plane_setup_mode(struct rcar_du_plane *plane,
colorkey = ((plane->colorkey & 0xf80000) >> 9)
| ((plane->colorkey & 0x00f800) >> 6)
| ((plane->colorkey & 0x0000f8) >> 3);
- rcar_du_plane_write(rcdu, index, PnTC2R, colorkey);
+ rcar_du_plane_write(rgrp, index, PnTC2R, colorkey);
break;
case DRM_FORMAT_XRGB8888:
case DRM_FORMAT_ARGB8888:
- rcar_du_plane_write(rcdu, index, PnTC3R,
+ rcar_du_plane_write(rgrp, index, PnTC3R,
PnTC3R_CODE | (plane->colorkey & 0xffffff));
break;
}
@@ -204,7 +206,7 @@ static void rcar_du_plane_setup_mode(struct rcar_du_plane *plane,
static void __rcar_du_plane_setup(struct rcar_du_plane *plane,
unsigned int index)
{
- struct rcar_du_device *rcdu = plane->dev;
+ struct rcar_du_group *rgrp = plane->group;
u32 ddcr2 = PnDDCR2_CODE;
u32 ddcr4;
u32 mwr;
@@ -214,7 +216,7 @@ static void __rcar_du_plane_setup(struct rcar_du_plane *plane,
* The data format is selected by the DDDF field in PnMR and the EDF
* field in DDCR4.
*/
- ddcr4 = rcar_du_plane_read(rcdu, index, PnDDCR4);
+ ddcr4 = rcar_du_plane_read(rgrp, index, PnDDCR4);
ddcr4 &= ~PnDDCR4_EDF_MASK;
ddcr4 |= plane->format->edf | PnDDCR4_CODE;
@@ -235,8 +237,8 @@ static void __rcar_du_plane_setup(struct rcar_du_plane *plane,
}
}
- rcar_du_plane_write(rcdu, index, PnDDCR2, ddcr2);
- rcar_du_plane_write(rcdu, index, PnDDCR4, ddcr4);
+ rcar_du_plane_write(rgrp, index, PnDDCR2, ddcr2);
+ rcar_du_plane_write(rgrp, index, PnDDCR4, ddcr4);
/* Memory pitch (expressed in pixels) */
if (plane->format->planes == 2)
@@ -244,19 +246,19 @@ static void __rcar_du_plane_setup(struct rcar_du_plane *plane,
else
mwr = plane->pitch * 8 / plane->format->bpp;
- rcar_du_plane_write(rcdu, index, PnMWR, mwr);
+ rcar_du_plane_write(rgrp, index, PnMWR, mwr);
/* Destination position and size */
- rcar_du_plane_write(rcdu, index, PnDSXR, plane->width);
- rcar_du_plane_write(rcdu, index, PnDSYR, plane->height);
- rcar_du_plane_write(rcdu, index, PnDPXR, plane->dst_x);
- rcar_du_plane_write(rcdu, index, PnDPYR, plane->dst_y);
+ rcar_du_plane_write(rgrp, index, PnDSXR, plane->width);
+ rcar_du_plane_write(rgrp, index, PnDSYR, plane->height);
+ rcar_du_plane_write(rgrp, index, PnDPXR, plane->dst_x);
+ rcar_du_plane_write(rgrp, index, PnDPYR, plane->dst_y);
/* Wrap-around and blinking, disabled */
- rcar_du_plane_write(rcdu, index, PnWASPR, 0);
- rcar_du_plane_write(rcdu, index, PnWAMWR, 4095);
- rcar_du_plane_write(rcdu, index, PnBTR, 0);
- rcar_du_plane_write(rcdu, index, PnMLR, 0);
+ rcar_du_plane_write(rgrp, index, PnWASPR, 0);
+ rcar_du_plane_write(rgrp, index, PnWAMWR, 4095);
+ rcar_du_plane_write(rgrp, index, PnBTR, 0);
+ rcar_du_plane_write(rgrp, index, PnMLR, 0);
}
void rcar_du_plane_setup(struct rcar_du_plane *plane)
@@ -276,7 +278,7 @@ rcar_du_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
uint32_t src_w, uint32_t src_h)
{
struct rcar_du_plane *rplane = to_rcar_plane(plane);
- struct rcar_du_device *rcdu = plane->dev->dev_private;
+ struct rcar_du_device *rcdu = rplane->group->dev;
const struct rcar_du_format_info *format;
unsigned int nplanes;
int ret;
@@ -319,26 +321,25 @@ rcar_du_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
rcar_du_plane_compute_base(rplane, fb);
rcar_du_plane_setup(rplane);
- mutex_lock(&rcdu->planes.lock);
+ mutex_lock(&rplane->group->planes.lock);
rplane->enabled = true;
rcar_du_crtc_update_planes(rplane->crtc);
- mutex_unlock(&rcdu->planes.lock);
+ mutex_unlock(&rplane->group->planes.lock);
return 0;
}
static int rcar_du_plane_disable(struct drm_plane *plane)
{
- struct rcar_du_device *rcdu = plane->dev->dev_private;
struct rcar_du_plane *rplane = to_rcar_plane(plane);
if (!rplane->enabled)
return 0;
- mutex_lock(&rcdu->planes.lock);
+ mutex_lock(&rplane->group->planes.lock);
rplane->enabled = false;
rcar_du_crtc_update_planes(rplane->crtc);
- mutex_unlock(&rcdu->planes.lock);
+ mutex_unlock(&rplane->group->planes.lock);
rcar_du_plane_release(rplane);
@@ -380,9 +381,7 @@ static void rcar_du_plane_set_colorkey(struct rcar_du_plane *plane,
static void rcar_du_plane_set_zpos(struct rcar_du_plane *plane,
unsigned int zpos)
{
- struct rcar_du_device *rcdu = plane->dev;
-
- mutex_lock(&rcdu->planes.lock);
+ mutex_lock(&plane->group->planes.lock);
if (plane->zpos == zpos)
goto done;
@@ -393,21 +392,21 @@ static void rcar_du_plane_set_zpos(struct rcar_du_plane *plane,
rcar_du_crtc_update_planes(plane->crtc);
done:
- mutex_unlock(&rcdu->planes.lock);
+ mutex_unlock(&plane->group->planes.lock);
}
static int rcar_du_plane_set_property(struct drm_plane *plane,
struct drm_property *property,
uint64_t value)
{
- struct rcar_du_device *rcdu = plane->dev->dev_private;
struct rcar_du_plane *rplane = to_rcar_plane(plane);
+ struct rcar_du_group *rgrp = rplane->group;
- if (property == rcdu->planes.alpha)
+ if (property == rgrp->planes.alpha)
rcar_du_plane_set_alpha(rplane, value);
- else if (property == rcdu->planes.colorkey)
+ else if (property == rgrp->planes.colorkey)
rcar_du_plane_set_colorkey(rplane, value);
- else if (property == rcdu->planes.zpos)
+ else if (property == rgrp->planes.zpos)
rcar_du_plane_set_zpos(rplane, value);
else
return -EINVAL;
@@ -435,37 +434,39 @@ static const uint32_t formats[] = {
DRM_FORMAT_NV16,
};
-int rcar_du_planes_init(struct rcar_du_device *rcdu)
+int rcar_du_planes_init(struct rcar_du_group *rgrp)
{
+ struct rcar_du_planes *planes = &rgrp->planes;
+ struct rcar_du_device *rcdu = rgrp->dev;
unsigned int i;
- mutex_init(&rcdu->planes.lock);
- rcdu->planes.free = 0xff;
+ mutex_init(&planes->lock);
+ planes->free = 0xff;
- rcdu->planes.alpha =
+ planes->alpha =
drm_property_create_range(rcdu->ddev, 0, "alpha", 0, 255);
- if (rcdu->planes.alpha == NULL)
+ if (planes->alpha == NULL)
return -ENOMEM;
/* The color key is expressed as an RGB888 triplet stored in a 32-bit
* integer in XRGB8888 format. Bit 24 is used as a flag to disable (0)
* or enable source color keying (1).
*/
- rcdu->planes.colorkey =
+ planes->colorkey =
drm_property_create_range(rcdu->ddev, 0, "colorkey",
0, 0x01ffffff);
- if (rcdu->planes.colorkey == NULL)
+ if (planes->colorkey == NULL)
return -ENOMEM;
- rcdu->planes.zpos =
+ planes->zpos =
drm_property_create_range(rcdu->ddev, 0, "zpos", 1, 7);
- if (rcdu->planes.zpos == NULL)
+ if (planes->zpos == NULL)
return -ENOMEM;
- for (i = 0; i < ARRAY_SIZE(rcdu->planes.planes); ++i) {
- struct rcar_du_plane *plane = &rcdu->planes.planes[i];
+ for (i = 0; i < ARRAY_SIZE(planes->planes); ++i) {
+ struct rcar_du_plane *plane = &planes->planes[i];
- plane->dev = rcdu;
+ plane->group = rgrp;
plane->hwindex = -1;
plane->alpha = 255;
plane->colorkey = RCAR_DU_COLORKEY_NONE;
@@ -475,8 +476,10 @@ int rcar_du_planes_init(struct rcar_du_device *rcdu)
return 0;
}
-int rcar_du_planes_register(struct rcar_du_device *rcdu)
+int rcar_du_planes_register(struct rcar_du_group *rgrp)
{
+ struct rcar_du_planes *planes = &rgrp->planes;
+ struct rcar_du_device *rcdu = rgrp->dev;
unsigned int i;
int ret;
@@ -487,7 +490,7 @@ int rcar_du_planes_register(struct rcar_du_device *rcdu)
if (plane == NULL)
return -ENOMEM;
- plane->hwplane = &rcdu->planes.planes[i + 2];
+ plane->hwplane = &planes->planes[i + 2];
plane->hwplane->zpos = 1;
ret = drm_plane_init(rcdu->ddev, &plane->plane,
@@ -498,12 +501,12 @@ int rcar_du_planes_register(struct rcar_du_device *rcdu)
return ret;
drm_object_attach_property(&plane->plane.base,
- rcdu->planes.alpha, 255);
+ planes->alpha, 255);
drm_object_attach_property(&plane->plane.base,
- rcdu->planes.colorkey,
+ planes->colorkey,
RCAR_DU_COLORKEY_NONE);
drm_object_attach_property(&plane->plane.base,
- rcdu->planes.zpos, 1);
+ planes->zpos, 1);
}
return 0;
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.h b/drivers/gpu/drm/rcar-du/rcar_du_plane.h
index bcf6f76f56a0..f94f9ce84998 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_plane.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.h
@@ -19,8 +19,8 @@
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
-struct rcar_du_device;
struct rcar_du_format_info;
+struct rcar_du_group;
/* The RCAR DU has 8 hardware planes, shared between KMS planes and CRTCs. As
* using KMS planes requires at least one of the CRTCs being enabled, no more
@@ -33,7 +33,7 @@ struct rcar_du_format_info;
#define RCAR_DU_NUM_SW_PLANES 9
struct rcar_du_plane {
- struct rcar_du_device *dev;
+ struct rcar_du_group *group;
struct drm_crtc *crtc;
bool enabled;
@@ -67,8 +67,8 @@ struct rcar_du_planes {
struct drm_property *zpos;
};
-int rcar_du_planes_init(struct rcar_du_device *rcdu);
-int rcar_du_planes_register(struct rcar_du_device *rcdu);
+int rcar_du_planes_init(struct rcar_du_group *rgrp);
+int rcar_du_planes_register(struct rcar_du_group *rgrp);
void rcar_du_plane_setup(struct rcar_du_plane *plane);
void rcar_du_plane_update_base(struct rcar_du_plane *plane);
--
1.8.5.rc3