From a45884a53ffd750de4e0b2d1f69f723b2545abd7 Mon Sep 17 00:00:00 2001
From: Sharat Masetty <smasetty@codeaurora.org>
Date: Mon, 13 Jul 2020 18:11:42 +0530
Subject: drm: msm: a6xx: send opp instead of a frequency
Git-commit: 1f60d11423db7152508f965fcf2db13a1094f7f3
Patch-mainline: v5.9-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
This patch changes the plumbing to send the devfreq recommended opp rather
than the frequency. Also consolidate and rearrange the code in a6xx to set
the GPU frequency and the icc vote in preparation for the upcoming
changes for GPU->DDR scaling votes.
Signed-off-by: Sharat Masetty <smasetty@codeaurora.org>
Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 89 +++++++++++++++------------
drivers/gpu/drm/msm/adreno/a6xx_gpu.h | 2 +-
drivers/gpu/drm/msm/msm_gpu.c | 3 +-
drivers/gpu/drm/msm/msm_gpu.h | 3 +-
4 files changed, 52 insertions(+), 45 deletions(-)
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index 21e77d67151f..856db46e93c4 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -103,17 +103,45 @@ bool a6xx_gmu_gx_is_on(struct a6xx_gmu *gmu)
A6XX_GMU_SPTPRAC_PWR_CLK_STATUS_GX_HM_CLK_OFF));
}
-static void __a6xx_gmu_set_freq(struct a6xx_gmu *gmu, int index)
+void a6xx_gmu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp)
{
- struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu);
- struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
- struct msm_gpu *gpu = &adreno_gpu->base;
- int ret;
+ struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+ struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
+ struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
+ u32 perf_index;
+ unsigned long gpu_freq;
+ int ret = 0;
+
+ gpu_freq = dev_pm_opp_get_freq(opp);
+
+ if (gpu_freq == gmu->freq)
+ return;
+
+ for (perf_index = 0; perf_index < gmu->nr_gpu_freqs - 1; perf_index++)
+ if (gpu_freq == gmu->gpu_freqs[perf_index])
+ break;
+
+ gmu->current_perf_index = perf_index;
+ gmu->freq = gmu->gpu_freqs[perf_index];
+
+ /*
+ * This can get called from devfreq while the hardware is idle. Don't
+ * bring up the power if it isn't already active
+ */
+ if (pm_runtime_get_if_in_use(gmu->dev) == 0)
+ return;
+
+ if (!gmu->legacy) {
+ a6xx_hfi_set_freq(gmu, perf_index);
+ icc_set_bw(gpu->icc_path, 0, MBps_to_icc(7216));
+ pm_runtime_put(gmu->dev);
+ return;
+ }
gmu_write(gmu, REG_A6XX_GMU_DCVS_ACK_OPTION, 0);
gmu_write(gmu, REG_A6XX_GMU_DCVS_PERF_SETTING,
- ((3 & 0xf) << 28) | index);
+ ((3 & 0xf) << 28) | perf_index);
/*
* Send an invalid index as a vote for the bus bandwidth and let the
@@ -134,37 +162,6 @@ static void __a6xx_gmu_set_freq(struct a6xx_gmu *gmu, int index)
* for now leave it at max so that the performance is nominal.
*/
icc_set_bw(gpu->icc_path, 0, MBps_to_icc(7216));
-}
-
-void a6xx_gmu_set_freq(struct msm_gpu *gpu, unsigned long freq)
-{
- struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
- struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
- struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
- u32 perf_index = 0;
-
- if (freq == gmu->freq)
- return;
-
- for (perf_index = 0; perf_index < gmu->nr_gpu_freqs - 1; perf_index++)
- if (freq == gmu->gpu_freqs[perf_index])
- break;
-
- gmu->current_perf_index = perf_index;
- gmu->freq = gmu->gpu_freqs[perf_index];
-
- /*
- * This can get called from devfreq while the hardware is idle. Don't
- * bring up the power if it isn't already active
- */
- if (pm_runtime_get_if_in_use(gmu->dev) == 0)
- return;
-
- if (gmu->legacy)
- __a6xx_gmu_set_freq(gmu, perf_index);
- else
- a6xx_hfi_set_freq(gmu, perf_index);
-
pm_runtime_put(gmu->dev);
}
@@ -839,6 +836,19 @@ static void a6xx_gmu_force_off(struct a6xx_gmu *gmu)
a6xx_gmu_rpmh_off(gmu);
}
+static void a6xx_gmu_set_initial_freq(struct msm_gpu *gpu, struct a6xx_gmu *gmu)
+{
+ struct dev_pm_opp *gpu_opp;
+ unsigned long gpu_freq = gmu->gpu_freqs[gmu->current_perf_index];
+
+ gpu_opp = dev_pm_opp_find_freq_exact(&gpu->pdev->dev, gpu_freq, true);
+ if (IS_ERR_OR_NULL(gpu_opp))
+ return;
+
+ a6xx_gmu_set_freq(gpu, gpu_opp);
+ dev_pm_opp_put(gpu_opp);
+}
+
int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
{
struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
@@ -898,10 +908,7 @@ int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
enable_irq(gmu->hfi_irq);
/* Set the GPU to the current freq */
- if (gmu->legacy)
- __a6xx_gmu_set_freq(gmu, gmu->current_perf_index);
- else
- a6xx_hfi_set_freq(gmu, gmu->current_perf_index);
+ a6xx_gmu_set_initial_freq(gpu, gmu);
/*
* "enable" the GX power domain which won't actually do anything but it
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.h b/drivers/gpu/drm/msm/adreno/a6xx_gpu.h
index 7239b8b60939..03ba60d5b07f 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.h
@@ -63,7 +63,7 @@ void a6xx_gmu_clear_oob(struct a6xx_gmu *gmu, enum a6xx_gmu_oob_state state);
int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node);
void a6xx_gmu_remove(struct a6xx_gpu *a6xx_gpu);
-void a6xx_gmu_set_freq(struct msm_gpu *gpu, unsigned long freq);
+void a6xx_gmu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp);
unsigned long a6xx_gmu_get_freq(struct msm_gpu *gpu);
void a6xx_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index 3763d4002629..d5645472b25d 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -13,7 +13,6 @@
#include <generated/utsrelease.h>
#include <linux/string_helpers.h>
-#include <linux/pm_opp.h>
#include <linux/devfreq.h>
#include <linux/devcoredump.h>
#include <linux/sched/task.h>
@@ -34,7 +33,7 @@ static int msm_devfreq_target(struct device *dev, unsigned long *freq,
return PTR_ERR(opp);
if (gpu->funcs->gpu_set_freq)
- gpu->funcs->gpu_set_freq(gpu, (u64)*freq);
+ gpu->funcs->gpu_set_freq(gpu, opp);
else
clk_set_rate(gpu->core_clk, *freq);
diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
index 429cb40f7931..0db117a7339b 100644
--- a/drivers/gpu/drm/msm/msm_gpu.h
+++ b/drivers/gpu/drm/msm/msm_gpu.h
@@ -9,6 +9,7 @@
#include <linux/clk.h>
#include <linux/interconnect.h>
+#include <linux/pm_opp.h>
#include <linux/regulator/consumer.h>
#include "msm_drv.h"
@@ -61,7 +62,7 @@ struct msm_gpu_funcs {
struct msm_gpu_state *(*gpu_state_get)(struct msm_gpu *gpu);
int (*gpu_state_put)(struct msm_gpu_state *state);
unsigned long (*gpu_get_freq)(struct msm_gpu *gpu);
- void (*gpu_set_freq)(struct msm_gpu *gpu, unsigned long freq);
+ void (*gpu_set_freq)(struct msm_gpu *gpu, struct dev_pm_opp *opp);
struct msm_gem_address_space *(*create_address_space)
(struct msm_gpu *gpu, struct platform_device *pdev);
};
--
2.29.2