[PATCHv3 2/7] gpu: host1x: Add syncpoint wait and interrupts
Add support for sync point interrupts, and sync point wait. Sync
point wait used interrupts for unblocking wait.
Signed-off-by: Terje Bergstrom
---
drivers/gpu/host1x/Makefile |3 +-
drivers/gpu/host1x/dev.c | 44
drivers/gpu/host1x/dev.h | 15 ++
drivers/gpu/host1x/hw/host1x01.c |2 +
drivers/gpu/host1x/hw/hw_host1x01_sync.h | 30 ++-
drivers/gpu/host1x/hw/intr_hw.c | 175 +++
drivers/gpu/host1x/intr.c| 350 ++
drivers/gpu/host1x/intr.h| 100 +
drivers/gpu/host1x/syncpt.c | 161 ++
drivers/gpu/host1x/syncpt.h |4 +
include/linux/host1x.h |1 +
11 files changed, 883 insertions(+), 2 deletions(-)
create mode 100644 drivers/gpu/host1x/hw/intr_hw.c
create mode 100644 drivers/gpu/host1x/intr.c
create mode 100644 drivers/gpu/host1x/intr.h
diff --git a/drivers/gpu/host1x/Makefile b/drivers/gpu/host1x/Makefile
index a4adcc6..9d00b62 100644
--- a/drivers/gpu/host1x/Makefile
+++ b/drivers/gpu/host1x/Makefile
@@ -2,7 +2,8 @@ ccflags-y = -Idrivers/gpu/host1x
host1x-objs = \
syncpt.o \
- dev.o
+ dev.o \
+ intr.o
obj-$(CONFIG_TEGRA_HOST1X) += hw/
obj-$(CONFIG_TEGRA_HOST1X) += host1x.o
diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c
index b0d630d..9255a49 100644
--- a/drivers/gpu/host1x/dev.c
+++ b/drivers/gpu/host1x/dev.c
@@ -25,6 +25,7 @@
#include
#include
#include "dev.h"
+#include "intr.h"
#include "hw/host1x01.h"
#define CREATE_TRACE_POINTS
@@ -48,6 +49,19 @@ u32 host1x_syncpt_read_byid(u32 id)
}
EXPORT_SYMBOL(host1x_syncpt_read_byid);
+int host1x_syncpt_wait_byid(u32 id, u32 thresh, long timeout, u32 *value)
+{
+ struct host1x_syncpt *sp = host1x->syncpt + id;
+ return host1x_syncpt_wait(sp, thresh, timeout, value);
+}
+EXPORT_SYMBOL(host1x_syncpt_wait_byid);
+
+static void host1x_free_resources(struct host1x *host)
+{
+ kfree(host->intr.syncpt);
+ host->intr.syncpt = 0;
+}
+
void host1x_sync_writel(struct host1x *host1x, u32 v, u32 r)
{
void __iomem *sync_regs = host1x->regs + host1x->info.sync_offset;
@@ -62,6 +76,21 @@ u32 host1x_sync_readl(struct host1x *host1x, u32 r)
return readl(sync_regs + r);
}
+static int host1x_alloc_resources(struct host1x *host)
+{
+ host->intr.syncpt = devm_kzalloc(&host->dev->dev,
+ sizeof(struct host1x_intr_syncpt) *
+ host->info.nb_pts,
+ GFP_KERNEL);
+
+ if (!host->intr.syncpt) {
+ /* frees happen in the support removal phase */
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
static struct host1x_device_info host1x_info = {
.nb_channels= 8,
.nb_pts = 32,
@@ -118,6 +147,12 @@ static int host1x_probe(struct platform_device *dev)
goto fail;
}
+ err = host1x_alloc_resources(host);
+ if (err) {
+ dev_err(&dev->dev, "failed to init chip support\n");
+ goto fail;
+ }
+
if (host->info.init) {
err = host->info.init(host);
if (err)
@@ -132,6 +167,10 @@ static int host1x_probe(struct platform_device *dev)
if (!host->nop_sp)
goto fail;
+ err = host1x_intr_init(&host->intr, syncpt_irq);
+ if (err)
+ goto fail;
+
host->clk = devm_clk_get(&dev->dev, NULL);
if (IS_ERR(host->clk)) {
dev_err(&dev->dev, "failed to get clock\n");
@@ -145,6 +184,8 @@ static int host1x_probe(struct platform_device *dev)
host1x_syncpt_reset(host);
+ host1x_intr_start(&host->intr, clk_get_rate(host->clk));
+
host1x = host;
dev_info(&dev->dev, "initialized\n");
@@ -153,6 +194,7 @@ static int host1x_probe(struct platform_device *dev)
fail:
host1x_syncpt_free(host->nop_sp);
+ host1x_free_resources(host);
kfree(host);
return err;
}
@@ -160,8 +202,10 @@ fail:
static int __exit host1x_remove(struct platform_device *dev)
{
struct host1x *host = platform_get_drvdata(dev);
+ host1x_intr_deinit(&host->intr);
host1x_syncpt_deinit(host);
clk_disable_unprepare(host->clk);
+ host1x_free_resources(host);
return 0;
}
diff --git a/drivers/gpu/host1x/dev.h b/drivers/gpu/host1x/dev.h
index 8245e24..a1622bb 100644
--- a/drivers/gpu/host1x/dev.h
+++ b/drivers/gpu/host1x/dev.h
@@ -20,6 +20,7 @@
#include
#include "syncpt.h"
+#include "intr.h"
struct host1x;
struct host1x_syncpt;
@@ -36,6 +37,18 @@ struct host1x_syncpt_ops {
const char * (*name)(struct host1x_syncpt *);
};
+struct host1x_intr_ops {
+ void (*init_host_sync)(struct host1x_intr *);
+ void (*set_host_clocks_per_usec)(
+ struct host1x_intr *, u32 clocks);
+ void
[PATCHv3 2/7] gpu: host1x: Add syncpoint wait and interrupts
Add support for sync point interrupts, and sync point wait. Sync
point wait used interrupts for unblocking wait.
Signed-off-by: Terje Bergstrom
---
drivers/gpu/host1x/Makefile |3 +-
drivers/gpu/host1x/dev.c | 44
drivers/gpu/host1x/dev.h | 15 ++
drivers/gpu/host1x/hw/host1x01.c |2 +
drivers/gpu/host1x/hw/hw_host1x01_sync.h | 30 ++-
drivers/gpu/host1x/hw/intr_hw.c | 175 +++
drivers/gpu/host1x/intr.c| 350 ++
drivers/gpu/host1x/intr.h| 100 +
drivers/gpu/host1x/syncpt.c | 161 ++
drivers/gpu/host1x/syncpt.h |4 +
include/linux/host1x.h |1 +
11 files changed, 883 insertions(+), 2 deletions(-)
create mode 100644 drivers/gpu/host1x/hw/intr_hw.c
create mode 100644 drivers/gpu/host1x/intr.c
create mode 100644 drivers/gpu/host1x/intr.h
diff --git a/drivers/gpu/host1x/Makefile b/drivers/gpu/host1x/Makefile
index a4adcc6..9d00b62 100644
--- a/drivers/gpu/host1x/Makefile
+++ b/drivers/gpu/host1x/Makefile
@@ -2,7 +2,8 @@ ccflags-y = -Idrivers/gpu/host1x
host1x-objs = \
syncpt.o \
- dev.o
+ dev.o \
+ intr.o
obj-$(CONFIG_TEGRA_HOST1X) += hw/
obj-$(CONFIG_TEGRA_HOST1X) += host1x.o
diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c
index b0d630d..9255a49 100644
--- a/drivers/gpu/host1x/dev.c
+++ b/drivers/gpu/host1x/dev.c
@@ -25,6 +25,7 @@
#include
#include
#include "dev.h"
+#include "intr.h"
#include "hw/host1x01.h"
#define CREATE_TRACE_POINTS
@@ -48,6 +49,19 @@ u32 host1x_syncpt_read_byid(u32 id)
}
EXPORT_SYMBOL(host1x_syncpt_read_byid);
+int host1x_syncpt_wait_byid(u32 id, u32 thresh, long timeout, u32 *value)
+{
+ struct host1x_syncpt *sp = host1x->syncpt + id;
+ return host1x_syncpt_wait(sp, thresh, timeout, value);
+}
+EXPORT_SYMBOL(host1x_syncpt_wait_byid);
+
+static void host1x_free_resources(struct host1x *host)
+{
+ kfree(host->intr.syncpt);
+ host->intr.syncpt = 0;
+}
+
void host1x_sync_writel(struct host1x *host1x, u32 v, u32 r)
{
void __iomem *sync_regs = host1x->regs + host1x->info.sync_offset;
@@ -62,6 +76,21 @@ u32 host1x_sync_readl(struct host1x *host1x, u32 r)
return readl(sync_regs + r);
}
+static int host1x_alloc_resources(struct host1x *host)
+{
+ host->intr.syncpt = devm_kzalloc(&host->dev->dev,
+ sizeof(struct host1x_intr_syncpt) *
+ host->info.nb_pts,
+ GFP_KERNEL);
+
+ if (!host->intr.syncpt) {
+ /* frees happen in the support removal phase */
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
static struct host1x_device_info host1x_info = {
.nb_channels= 8,
.nb_pts = 32,
@@ -118,6 +147,12 @@ static int host1x_probe(struct platform_device *dev)
goto fail;
}
+ err = host1x_alloc_resources(host);
+ if (err) {
+ dev_err(&dev->dev, "failed to init chip support\n");
+ goto fail;
+ }
+
if (host->info.init) {
err = host->info.init(host);
if (err)
@@ -132,6 +167,10 @@ static int host1x_probe(struct platform_device *dev)
if (!host->nop_sp)
goto fail;
+ err = host1x_intr_init(&host->intr, syncpt_irq);
+ if (err)
+ goto fail;
+
host->clk = devm_clk_get(&dev->dev, NULL);
if (IS_ERR(host->clk)) {
dev_err(&dev->dev, "failed to get clock\n");
@@ -145,6 +184,8 @@ static int host1x_probe(struct platform_device *dev)
host1x_syncpt_reset(host);
+ host1x_intr_start(&host->intr, clk_get_rate(host->clk));
+
host1x = host;
dev_info(&dev->dev, "initialized\n");
@@ -153,6 +194,7 @@ static int host1x_probe(struct platform_device *dev)
fail:
host1x_syncpt_free(host->nop_sp);
+ host1x_free_resources(host);
kfree(host);
return err;
}
@@ -160,8 +202,10 @@ fail:
static int __exit host1x_remove(struct platform_device *dev)
{
struct host1x *host = platform_get_drvdata(dev);
+ host1x_intr_deinit(&host->intr);
host1x_syncpt_deinit(host);
clk_disable_unprepare(host->clk);
+ host1x_free_resources(host);
return 0;
}
diff --git a/drivers/gpu/host1x/dev.h b/drivers/gpu/host1x/dev.h
index 8245e24..a1622bb 100644
--- a/drivers/gpu/host1x/dev.h
+++ b/drivers/gpu/host1x/dev.h
@@ -20,6 +20,7 @@
#include
#include "syncpt.h"
+#include "intr.h"
struct host1x;
struct host1x_syncpt;
@@ -36,6 +37,18 @@ struct host1x_syncpt_ops {
const char * (*name)(struct host1x_syncpt *);
};
+struct host1x_intr_ops {
+ void (*init_host_sync)(struct host1x_intr *);
+ void (*set_host_clocks_per_usec)(
+ struct host1x_intr *, u32 clocks
