* [PATCH 3/4] drm/lima: add resume/suspend callback for each ip
2020-04-15 13:52 [PATCH 0/4] drm/lima: add suspend/resume support Qiang Yu
2020-04-15 13:52 ` [PATCH 1/4] drm/lima: add lima_devfreq_resume/suspend Qiang Yu
2020-04-15 13:52 ` [PATCH 2/4] drm/lima: power down ip blocks when pmu exit Qiang Yu
@ 2020-04-15 13:52 ` Qiang Yu
2020-04-15 13:52 ` [PATCH 4/4] drm/lima: add pm resume/suspend Qiang Yu
3 siblings, 0 replies; 5+ messages in thread
From: Qiang Yu @ 2020-04-15 13:52 UTC (permalink / raw)
To: dri-devel
Cc: lima, David Airlie, Bhushan Shah, Vasily Khoruzhick,
Andreas Baierl, Qiang Yu, Erico Nunes
For called when PM do resume/suspend.
Tested-by: Bhushan Shah <bshah@kde.org>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
---
drivers/gpu/drm/lima/lima_bcast.c | 25 ++++++++++++----
drivers/gpu/drm/lima/lima_bcast.h | 2 ++
drivers/gpu/drm/lima/lima_device.c | 4 +++
drivers/gpu/drm/lima/lima_device.h | 2 +-
drivers/gpu/drm/lima/lima_dlbu.c | 17 ++++++++++-
drivers/gpu/drm/lima/lima_dlbu.h | 2 ++
drivers/gpu/drm/lima/lima_gp.c | 21 +++++++++++--
drivers/gpu/drm/lima/lima_gp.h | 2 ++
drivers/gpu/drm/lima/lima_l2_cache.c | 37 ++++++++++++++++-------
drivers/gpu/drm/lima/lima_l2_cache.h | 2 ++
drivers/gpu/drm/lima/lima_mmu.c | 45 ++++++++++++++++++++--------
drivers/gpu/drm/lima/lima_mmu.h | 2 ++
drivers/gpu/drm/lima/lima_pmu.c | 25 ++++++++++++++--
drivers/gpu/drm/lima/lima_pmu.h | 2 ++
drivers/gpu/drm/lima/lima_pp.c | 31 +++++++++++++++++--
drivers/gpu/drm/lima/lima_pp.h | 4 +++
16 files changed, 186 insertions(+), 37 deletions(-)
diff --git a/drivers/gpu/drm/lima/lima_bcast.c b/drivers/gpu/drm/lima/lima_bcast.c
index 288398027bfa..fbc43f243c54 100644
--- a/drivers/gpu/drm/lima/lima_bcast.c
+++ b/drivers/gpu/drm/lima/lima_bcast.c
@@ -26,18 +26,33 @@ void lima_bcast_enable(struct lima_device *dev, int num_pp)
bcast_write(LIMA_BCAST_BROADCAST_MASK, mask);
}
+static int lima_bcast_hw_init(struct lima_ip *ip)
+{
+ bcast_write(LIMA_BCAST_BROADCAST_MASK, ip->data.mask << 16);
+ bcast_write(LIMA_BCAST_INTERRUPT_MASK, ip->data.mask);
+ return 0;
+}
+
+int lima_bcast_resume(struct lima_ip *ip)
+{
+ return lima_bcast_hw_init(ip);
+}
+
+void lima_bcast_suspend(struct lima_ip *ip)
+{
+
+}
+
int lima_bcast_init(struct lima_ip *ip)
{
- int i, mask = 0;
+ int i;
for (i = lima_ip_pp0; i <= lima_ip_pp7; i++) {
if (ip->dev->ip[i].present)
- mask |= 1 << (i - lima_ip_pp0);
+ ip->data.mask |= 1 << (i - lima_ip_pp0);
}
- bcast_write(LIMA_BCAST_BROADCAST_MASK, mask << 16);
- bcast_write(LIMA_BCAST_INTERRUPT_MASK, mask);
- return 0;
+ return lima_bcast_hw_init(ip);
}
void lima_bcast_fini(struct lima_ip *ip)
diff --git a/drivers/gpu/drm/lima/lima_bcast.h b/drivers/gpu/drm/lima/lima_bcast.h
index c47e58563d0a..465ee587bceb 100644
--- a/drivers/gpu/drm/lima/lima_bcast.h
+++ b/drivers/gpu/drm/lima/lima_bcast.h
@@ -6,6 +6,8 @@
struct lima_ip;
+int lima_bcast_resume(struct lima_ip *ip);
+void lima_bcast_suspend(struct lima_ip *ip);
int lima_bcast_init(struct lima_ip *ip);
void lima_bcast_fini(struct lima_ip *ip);
diff --git a/drivers/gpu/drm/lima/lima_device.c b/drivers/gpu/drm/lima/lima_device.c
index 247f51fd40a2..e5f1f84ba85a 100644
--- a/drivers/gpu/drm/lima/lima_device.c
+++ b/drivers/gpu/drm/lima/lima_device.c
@@ -25,6 +25,8 @@ struct lima_ip_desc {
int (*init)(struct lima_ip *ip);
void (*fini)(struct lima_ip *ip);
+ int (*resume)(struct lima_ip *ip);
+ void (*suspend)(struct lima_ip *ip);
};
#define LIMA_IP_DESC(ipname, mst0, mst1, off0, off1, func, irq) \
@@ -41,6 +43,8 @@ struct lima_ip_desc {
}, \
.init = lima_##func##_init, \
.fini = lima_##func##_fini, \
+ .resume = lima_##func##_resume, \
+ .suspend = lima_##func##_suspend, \
}
static struct lima_ip_desc lima_ip_desc[lima_ip_num] = {
diff --git a/drivers/gpu/drm/lima/lima_device.h b/drivers/gpu/drm/lima/lima_device.h
index 1a5032b08883..095a0b5f1703 100644
--- a/drivers/gpu/drm/lima/lima_device.h
+++ b/drivers/gpu/drm/lima/lima_device.h
@@ -64,7 +64,7 @@ struct lima_ip {
bool async_reset;
/* l2 cache */
spinlock_t lock;
- /* pmu */
+ /* pmu/bcast */
u32 mask;
} data;
};
diff --git a/drivers/gpu/drm/lima/lima_dlbu.c b/drivers/gpu/drm/lima/lima_dlbu.c
index 8399ceffb94b..c1d5ea35daa7 100644
--- a/drivers/gpu/drm/lima/lima_dlbu.c
+++ b/drivers/gpu/drm/lima/lima_dlbu.c
@@ -42,7 +42,7 @@ void lima_dlbu_set_reg(struct lima_ip *ip, u32 *reg)
dlbu_write(LIMA_DLBU_START_TILE_POS, reg[3]);
}
-int lima_dlbu_init(struct lima_ip *ip)
+static int lima_dlbu_hw_init(struct lima_ip *ip)
{
struct lima_device *dev = ip->dev;
@@ -52,6 +52,21 @@ int lima_dlbu_init(struct lima_ip *ip)
return 0;
}
+int lima_dlbu_resume(struct lima_ip *ip)
+{
+ return lima_dlbu_hw_init(ip);
+}
+
+void lima_dlbu_suspend(struct lima_ip *ip)
+{
+
+}
+
+int lima_dlbu_init(struct lima_ip *ip)
+{
+ return lima_dlbu_hw_init(ip);
+}
+
void lima_dlbu_fini(struct lima_ip *ip)
{
diff --git a/drivers/gpu/drm/lima/lima_dlbu.h b/drivers/gpu/drm/lima/lima_dlbu.h
index 16f877984466..be71daaaee89 100644
--- a/drivers/gpu/drm/lima/lima_dlbu.h
+++ b/drivers/gpu/drm/lima/lima_dlbu.h
@@ -12,6 +12,8 @@ void lima_dlbu_disable(struct lima_device *dev);
void lima_dlbu_set_reg(struct lima_ip *ip, u32 *reg);
+int lima_dlbu_resume(struct lima_ip *ip);
+void lima_dlbu_suspend(struct lima_ip *ip);
int lima_dlbu_init(struct lima_ip *ip);
void lima_dlbu_fini(struct lima_ip *ip);
diff --git a/drivers/gpu/drm/lima/lima_gp.c b/drivers/gpu/drm/lima/lima_gp.c
index d8841c870d90..8dd501b7a3d0 100644
--- a/drivers/gpu/drm/lima/lima_gp.c
+++ b/drivers/gpu/drm/lima/lima_gp.c
@@ -274,6 +274,23 @@ static void lima_gp_print_version(struct lima_ip *ip)
static struct kmem_cache *lima_gp_task_slab;
static int lima_gp_task_slab_refcnt;
+static int lima_gp_hw_init(struct lima_ip *ip)
+{
+ ip->data.async_reset = false;
+ lima_gp_soft_reset_async(ip);
+ return lima_gp_soft_reset_async_wait(ip);
+}
+
+int lima_gp_resume(struct lima_ip *ip)
+{
+ return lima_gp_hw_init(ip);
+}
+
+void lima_gp_suspend(struct lima_ip *ip)
+{
+
+}
+
int lima_gp_init(struct lima_ip *ip)
{
struct lima_device *dev = ip->dev;
@@ -281,9 +298,7 @@ int lima_gp_init(struct lima_ip *ip)
lima_gp_print_version(ip);
- ip->data.async_reset = false;
- lima_gp_soft_reset_async(ip);
- err = lima_gp_soft_reset_async_wait(ip);
+ err = lima_gp_hw_init(ip);
if (err)
return err;
diff --git a/drivers/gpu/drm/lima/lima_gp.h b/drivers/gpu/drm/lima/lima_gp.h
index 516e5c1babbb..02ec9af78a51 100644
--- a/drivers/gpu/drm/lima/lima_gp.h
+++ b/drivers/gpu/drm/lima/lima_gp.h
@@ -7,6 +7,8 @@
struct lima_ip;
struct lima_device;
+int lima_gp_resume(struct lima_ip *ip);
+void lima_gp_suspend(struct lima_ip *ip);
int lima_gp_init(struct lima_ip *ip);
void lima_gp_fini(struct lima_ip *ip);
diff --git a/drivers/gpu/drm/lima/lima_l2_cache.c b/drivers/gpu/drm/lima/lima_l2_cache.c
index 6873a7af5a5c..c67fa34fba18 100644
--- a/drivers/gpu/drm/lima/lima_l2_cache.c
+++ b/drivers/gpu/drm/lima/lima_l2_cache.c
@@ -38,9 +38,34 @@ int lima_l2_cache_flush(struct lima_ip *ip)
return ret;
}
+static int lima_l2_cache_hw_init(struct lima_ip *ip)
+{
+ int err;
+
+ err = lima_l2_cache_flush(ip);
+ if (err)
+ return err;
+
+ l2_cache_write(LIMA_L2_CACHE_ENABLE,
+ LIMA_L2_CACHE_ENABLE_ACCESS|LIMA_L2_CACHE_ENABLE_READ_ALLOCATE);
+ l2_cache_write(LIMA_L2_CACHE_MAX_READS, 0x1c);
+
+ return 0;
+}
+
+int lima_l2_cache_resume(struct lima_ip *ip)
+{
+ return lima_l2_cache_hw_init(ip);
+}
+
+void lima_l2_cache_suspend(struct lima_ip *ip)
+{
+
+}
+
int lima_l2_cache_init(struct lima_ip *ip)
{
- int i, err;
+ int i;
u32 size;
struct lima_device *dev = ip->dev;
@@ -63,15 +88,7 @@ int lima_l2_cache_init(struct lima_ip *ip)
1 << (size & 0xff),
1 << ((size >> 24) & 0xff));
- err = lima_l2_cache_flush(ip);
- if (err)
- return err;
-
- l2_cache_write(LIMA_L2_CACHE_ENABLE,
- LIMA_L2_CACHE_ENABLE_ACCESS|LIMA_L2_CACHE_ENABLE_READ_ALLOCATE);
- l2_cache_write(LIMA_L2_CACHE_MAX_READS, 0x1c);
-
- return 0;
+ return lima_l2_cache_hw_init(ip);
}
void lima_l2_cache_fini(struct lima_ip *ip)
diff --git a/drivers/gpu/drm/lima/lima_l2_cache.h b/drivers/gpu/drm/lima/lima_l2_cache.h
index c63fb676ff14..1aeeefd53fb9 100644
--- a/drivers/gpu/drm/lima/lima_l2_cache.h
+++ b/drivers/gpu/drm/lima/lima_l2_cache.h
@@ -6,6 +6,8 @@
struct lima_ip;
+int lima_l2_cache_resume(struct lima_ip *ip);
+void lima_l2_cache_suspend(struct lima_ip *ip);
int lima_l2_cache_init(struct lima_ip *ip);
void lima_l2_cache_fini(struct lima_ip *ip);
diff --git a/drivers/gpu/drm/lima/lima_mmu.c b/drivers/gpu/drm/lima/lima_mmu.c
index f79d2af427e7..c12521ee94ce 100644
--- a/drivers/gpu/drm/lima/lima_mmu.c
+++ b/drivers/gpu/drm/lima/lima_mmu.c
@@ -59,12 +59,43 @@ static irqreturn_t lima_mmu_irq_handler(int irq, void *data)
return IRQ_HANDLED;
}
-int lima_mmu_init(struct lima_ip *ip)
+static int lima_mmu_hw_init(struct lima_ip *ip)
{
struct lima_device *dev = ip->dev;
int err;
u32 v;
+ mmu_write(LIMA_MMU_COMMAND, LIMA_MMU_COMMAND_HARD_RESET);
+ err = lima_mmu_send_command(LIMA_MMU_COMMAND_HARD_RESET,
+ LIMA_MMU_DTE_ADDR, v, v == 0);
+ if (err)
+ return err;
+
+ mmu_write(LIMA_MMU_INT_MASK, LIMA_MMU_INT_PAGE_FAULT | LIMA_MMU_INT_READ_BUS_ERROR);
+ mmu_write(LIMA_MMU_DTE_ADDR, dev->empty_vm->pd.dma);
+ return lima_mmu_send_command(LIMA_MMU_COMMAND_ENABLE_PAGING,
+ LIMA_MMU_STATUS, v,
+ v & LIMA_MMU_STATUS_PAGING_ENABLED);
+}
+
+int lima_mmu_resume(struct lima_ip *ip)
+{
+ if (ip->id == lima_ip_ppmmu_bcast)
+ return 0;
+
+ return lima_mmu_hw_init(ip);
+}
+
+void lima_mmu_suspend(struct lima_ip *ip)
+{
+
+}
+
+int lima_mmu_init(struct lima_ip *ip)
+{
+ struct lima_device *dev = ip->dev;
+ int err;
+
if (ip->id == lima_ip_ppmmu_bcast)
return 0;
@@ -74,12 +105,6 @@ int lima_mmu_init(struct lima_ip *ip)
return -EIO;
}
- mmu_write(LIMA_MMU_COMMAND, LIMA_MMU_COMMAND_HARD_RESET);
- err = lima_mmu_send_command(LIMA_MMU_COMMAND_HARD_RESET,
- LIMA_MMU_DTE_ADDR, v, v == 0);
- if (err)
- return err;
-
err = devm_request_irq(dev->dev, ip->irq, lima_mmu_irq_handler,
IRQF_SHARED, lima_ip_name(ip), ip);
if (err) {
@@ -87,11 +112,7 @@ int lima_mmu_init(struct lima_ip *ip)
return err;
}
- mmu_write(LIMA_MMU_INT_MASK, LIMA_MMU_INT_PAGE_FAULT | LIMA_MMU_INT_READ_BUS_ERROR);
- mmu_write(LIMA_MMU_DTE_ADDR, dev->empty_vm->pd.dma);
- return lima_mmu_send_command(LIMA_MMU_COMMAND_ENABLE_PAGING,
- LIMA_MMU_STATUS, v,
- v & LIMA_MMU_STATUS_PAGING_ENABLED);
+ return lima_mmu_hw_init(ip);
}
void lima_mmu_fini(struct lima_ip *ip)
diff --git a/drivers/gpu/drm/lima/lima_mmu.h b/drivers/gpu/drm/lima/lima_mmu.h
index 4f8ccbebcba1..f0c97ac75ea0 100644
--- a/drivers/gpu/drm/lima/lima_mmu.h
+++ b/drivers/gpu/drm/lima/lima_mmu.h
@@ -7,6 +7,8 @@
struct lima_ip;
struct lima_vm;
+int lima_mmu_resume(struct lima_ip *ip);
+void lima_mmu_suspend(struct lima_ip *ip);
int lima_mmu_init(struct lima_ip *ip);
void lima_mmu_fini(struct lima_ip *ip);
diff --git a/drivers/gpu/drm/lima/lima_pmu.c b/drivers/gpu/drm/lima/lima_pmu.c
index 7f26bf384e15..014b07c55b46 100644
--- a/drivers/gpu/drm/lima/lima_pmu.c
+++ b/drivers/gpu/drm/lima/lima_pmu.c
@@ -63,7 +63,7 @@ static u32 lima_pmu_get_ip_mask(struct lima_ip *ip)
return ret;
}
-int lima_pmu_init(struct lima_ip *ip)
+static int lima_pmu_hw_init(struct lima_ip *ip)
{
int err;
u32 stat;
@@ -88,7 +88,7 @@ int lima_pmu_init(struct lima_ip *ip)
return 0;
}
-void lima_pmu_fini(struct lima_ip *ip)
+static void lima_pmu_hw_fini(struct lima_ip *ip)
{
u32 stat;
@@ -101,3 +101,24 @@ void lima_pmu_fini(struct lima_ip *ip)
lima_pmu_wait_cmd(ip);
}
}
+
+int lima_pmu_resume(struct lima_ip *ip)
+{
+ return lima_pmu_hw_init(ip);
+}
+
+void lima_pmu_suspend(struct lima_ip *ip)
+{
+ lima_pmu_hw_fini(ip);
+}
+
+
+int lima_pmu_init(struct lima_ip *ip)
+{
+ return lima_pmu_hw_init(ip);
+}
+
+void lima_pmu_fini(struct lima_ip *ip)
+{
+ lima_pmu_hw_fini(ip);
+}
diff --git a/drivers/gpu/drm/lima/lima_pmu.h b/drivers/gpu/drm/lima/lima_pmu.h
index a2a18775eb07..652dc7af3047 100644
--- a/drivers/gpu/drm/lima/lima_pmu.h
+++ b/drivers/gpu/drm/lima/lima_pmu.h
@@ -6,6 +6,8 @@
struct lima_ip;
+int lima_pmu_resume(struct lima_ip *ip);
+void lima_pmu_suspend(struct lima_ip *ip);
int lima_pmu_init(struct lima_ip *ip);
void lima_pmu_fini(struct lima_ip *ip);
diff --git a/drivers/gpu/drm/lima/lima_pp.c b/drivers/gpu/drm/lima/lima_pp.c
index 8fef224b93c8..33f01383409c 100644
--- a/drivers/gpu/drm/lima/lima_pp.c
+++ b/drivers/gpu/drm/lima/lima_pp.c
@@ -223,6 +223,23 @@ static void lima_pp_print_version(struct lima_ip *ip)
lima_ip_name(ip), name, major, minor);
}
+static int lima_pp_hw_init(struct lima_ip *ip)
+{
+ ip->data.async_reset = false;
+ lima_pp_soft_reset_async(ip);
+ return lima_pp_soft_reset_async_wait(ip);
+}
+
+int lima_pp_resume(struct lima_ip *ip)
+{
+ return lima_pp_hw_init(ip);
+}
+
+void lima_pp_suspend(struct lima_ip *ip)
+{
+
+}
+
int lima_pp_init(struct lima_ip *ip)
{
struct lima_device *dev = ip->dev;
@@ -230,9 +247,7 @@ int lima_pp_init(struct lima_ip *ip)
lima_pp_print_version(ip);
- ip->data.async_reset = false;
- lima_pp_soft_reset_async(ip);
- err = lima_pp_soft_reset_async_wait(ip);
+ err = lima_pp_hw_init(ip);
if (err)
return err;
@@ -254,6 +269,16 @@ void lima_pp_fini(struct lima_ip *ip)
}
+int lima_pp_bcast_resume(struct lima_ip *ip)
+{
+ return 0;
+}
+
+void lima_pp_bcast_suspend(struct lima_ip *ip)
+{
+
+}
+
int lima_pp_bcast_init(struct lima_ip *ip)
{
struct lima_device *dev = ip->dev;
diff --git a/drivers/gpu/drm/lima/lima_pp.h b/drivers/gpu/drm/lima/lima_pp.h
index bf60c77b2633..16ec96de15a9 100644
--- a/drivers/gpu/drm/lima/lima_pp.h
+++ b/drivers/gpu/drm/lima/lima_pp.h
@@ -7,9 +7,13 @@
struct lima_ip;
struct lima_device;
+int lima_pp_resume(struct lima_ip *ip);
+void lima_pp_suspend(struct lima_ip *ip);
int lima_pp_init(struct lima_ip *ip);
void lima_pp_fini(struct lima_ip *ip);
+int lima_pp_bcast_resume(struct lima_ip *ip);
+void lima_pp_bcast_suspend(struct lima_ip *ip);
int lima_pp_bcast_init(struct lima_ip *ip);
void lima_pp_bcast_fini(struct lima_ip *ip);
--
2.17.1
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^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH 4/4] drm/lima: add pm resume/suspend
2020-04-15 13:52 [PATCH 0/4] drm/lima: add suspend/resume support Qiang Yu
` (2 preceding siblings ...)
2020-04-15 13:52 ` [PATCH 3/4] drm/lima: add resume/suspend callback for each ip Qiang Yu
@ 2020-04-15 13:52 ` Qiang Yu
3 siblings, 0 replies; 5+ messages in thread
From: Qiang Yu @ 2020-04-15 13:52 UTC (permalink / raw)
To: dri-devel
Cc: lima, David Airlie, Bhushan Shah, Vasily Khoruzhick,
Andreas Baierl, Qiang Yu, Erico Nunes
Do hardware resume/suspend.
Tested-by: Bhushan Shah <bshah@kde.org>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
---
drivers/gpu/drm/lima/lima_device.c | 65 ++++++++++++++++++++++++++++++
drivers/gpu/drm/lima/lima_device.h | 3 ++
drivers/gpu/drm/lima/lima_drv.c | 7 ++++
3 files changed, 75 insertions(+)
diff --git a/drivers/gpu/drm/lima/lima_device.c b/drivers/gpu/drm/lima/lima_device.c
index e5f1f84ba85a..aca2cab9899b 100644
--- a/drivers/gpu/drm/lima/lima_device.c
+++ b/drivers/gpu/drm/lima/lima_device.c
@@ -213,6 +213,27 @@ static void lima_fini_ip(struct lima_device *ldev, int index)
desc->fini(ip);
}
+static int lima_resume_ip(struct lima_device *ldev, int index)
+{
+ struct lima_ip_desc *desc = lima_ip_desc + index;
+ struct lima_ip *ip = ldev->ip + index;
+ int ret = 0;
+
+ if (ip->present)
+ ret = desc->resume(ip);
+
+ return ret;
+}
+
+static void lima_suspend_ip(struct lima_device *ldev, int index)
+{
+ struct lima_ip_desc *desc = lima_ip_desc + index;
+ struct lima_ip *ip = ldev->ip + index;
+
+ if (ip->present)
+ desc->suspend(ip);
+}
+
static int lima_init_gp_pipe(struct lima_device *dev)
{
struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_gp;
@@ -408,3 +429,47 @@ void lima_device_fini(struct lima_device *ldev)
lima_clk_fini(ldev);
}
+
+int lima_device_resume(struct device *dev)
+{
+ struct lima_device *ldev = dev_get_drvdata(dev);
+ int i, err;
+
+ for (i = 0; i < lima_ip_num; i++) {
+ err = lima_resume_ip(ldev, i);
+ if (err)
+ goto err_out;
+ }
+
+ err = lima_devfreq_resume(&ldev->devfreq);
+ if (err)
+ goto err_out;
+
+ return 0;
+
+err_out:
+ while (--i >= 0)
+ lima_suspend_ip(ldev, i);
+ return err;
+}
+
+int lima_device_suspend(struct device *dev)
+{
+ struct lima_device *ldev = dev_get_drvdata(dev);
+ int i, err;
+
+ /* check any task running */
+ for (i = 0; i < lima_pipe_num; i++) {
+ if (atomic_read(&ldev->pipe[i].base.hw_rq_count))
+ return -EBUSY;
+ }
+
+ err = lima_devfreq_suspend(&ldev->devfreq);
+ if (err)
+ return err;
+
+ for (i = lima_ip_num - 1; i >= 0; i--)
+ lima_suspend_ip(ldev, i);
+
+ return 0;
+}
diff --git a/drivers/gpu/drm/lima/lima_device.h b/drivers/gpu/drm/lima/lima_device.h
index 095a0b5f1703..e06d1955f4a3 100644
--- a/drivers/gpu/drm/lima/lima_device.h
+++ b/drivers/gpu/drm/lima/lima_device.h
@@ -141,4 +141,7 @@ static inline int lima_poll_timeout(struct lima_ip *ip, lima_poll_func_t func,
return 0;
}
+int lima_device_suspend(struct device *dev);
+int lima_device_resume(struct device *dev);
+
#endif
diff --git a/drivers/gpu/drm/lima/lima_drv.c b/drivers/gpu/drm/lima/lima_drv.c
index bbbdc8455e2f..be66b448d44e 100644
--- a/drivers/gpu/drm/lima/lima_drv.c
+++ b/drivers/gpu/drm/lima/lima_drv.c
@@ -5,6 +5,7 @@
#include <linux/of_platform.h>
#include <linux/uaccess.h>
#include <linux/slab.h>
+#include <linux/pm_runtime.h>
#include <drm/drm_ioctl.h>
#include <drm/drm_drv.h>
#include <drm/drm_prime.h>
@@ -452,11 +453,17 @@ static const struct of_device_id dt_match[] = {
};
MODULE_DEVICE_TABLE(of, dt_match);
+static const struct dev_pm_ops lima_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
+ SET_RUNTIME_PM_OPS(lima_device_suspend, lima_device_resume, NULL)
+};
+
static struct platform_driver lima_platform_driver = {
.probe = lima_pdev_probe,
.remove = lima_pdev_remove,
.driver = {
.name = "lima",
+ .pm = &lima_pm_ops,
.of_match_table = dt_match,
},
};
--
2.17.1
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