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Subject[PATCH 16/31] drm/msm: convert to use devm_pm_opp_* API and remove dp_ctrl_put
Date
1. Use devm_pm_opp_* to simplif code and avoid mem leak.
2. Remove opp_table from dpu_kms, dp_ctrl_private and msm_dsi_host,
since it does not need a global scope.
3. Remove dp_ctrl_put.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
---
drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 2 +-
drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 2 +-
drivers/gpu/drm/msm/adreno/adreno_gpu.c | 2 +-
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 23 ++++++++------------
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h | 2 --
drivers/gpu/drm/msm/dp/dp_ctrl.c | 29 ++++++-------------------
drivers/gpu/drm/msm/dp/dp_ctrl.h | 1 -
drivers/gpu/drm/msm/dp/dp_display.c | 5 +----
drivers/gpu/drm/msm/dsi/dsi_host.c | 15 +++++--------
9 files changed, 26 insertions(+), 55 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
index a5af223eaf50..47e51c632209 100644
--- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
@@ -1560,7 +1560,7 @@ static void check_speed_bin(struct device *dev)
nvmem_cell_put(cell);
}

- dev_pm_opp_set_supported_hw(dev, &val, 1);
+ devm_pm_opp_set_supported_hw(dev, &val, 1);
}

struct msm_gpu *a5xx_gpu_init(struct drm_device *dev)
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index e6703ae98760..bd159e6fac5a 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -1321,7 +1321,7 @@ static int a6xx_gmu_pwrlevels_probe(struct a6xx_gmu *gmu)
* The GMU handles its own frequency switching so build a list of
* available frequencies to send during initialization
*/
- ret = dev_pm_opp_of_add_table(gmu->dev);
+ ret = devm_pm_opp_of_add_table(gmu->dev);
if (ret) {
DRM_DEV_ERROR(gmu->dev, "Unable to set the OPP table for the GMU\n");
return ret;
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index 6cf9975e951e..e6c446c436e3 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -845,7 +845,7 @@ static void adreno_get_pwrlevels(struct device *dev,
if (!of_find_property(dev->of_node, "operating-points-v2", NULL))
ret = adreno_get_legacy_pwrlevels(dev);
else {
- ret = dev_pm_opp_of_add_table(dev);
+ ret = devm_pm_opp_of_add_table(dev);
if (ret)
DRM_DEV_ERROR(dev, "Unable to set the OPP table\n");
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index 6f19dfcb4965..cb7e4fddf268 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -1082,19 +1082,20 @@ static int dpu_bind(struct device *dev, struct device *master, void *data)
struct msm_drm_private *priv = ddev->dev_private;
struct dpu_kms *dpu_kms;
struct dss_module_power *mp;
+ struct opp_table *opp_table;
int ret = 0;

dpu_kms = devm_kzalloc(&pdev->dev, sizeof(*dpu_kms), GFP_KERNEL);
if (!dpu_kms)
return -ENOMEM;

- dpu_kms->opp_table = dev_pm_opp_set_clkname(dev, "core");
- if (IS_ERR(dpu_kms->opp_table))
- return PTR_ERR(dpu_kms->opp_table);
+ opp_table = devm_pm_opp_set_clkname(dev, "core");
+ if (IS_ERR(opp_table))
+ return PTR_ERR(opp_table);
/* OPP table is optional */
- ret = dev_pm_opp_of_add_table(dev);
+ ret = devm_pm_opp_of_add_table(dev);
if (ret) {
- dev_pm_opp_put_clkname(dpu_kms->opp_table);
+ devm_pm_opp_put_clkname(dev, opp_table);
if (ret != -ENODEV) {
dev_err(dev, "invalid OPP table in device tree\n");
return ret;
@@ -1105,7 +1106,7 @@ static int dpu_bind(struct device *dev, struct device *master, void *data)
ret = msm_dss_parse_clock(pdev, mp);
if (ret) {
DPU_ERROR("failed to parse clocks, ret=%d\n", ret);
- goto err;
+ return ret;
}

platform_set_drvdata(pdev, dpu_kms);
@@ -1113,7 +1114,7 @@ static int dpu_bind(struct device *dev, struct device *master, void *data)
ret = msm_kms_init(&dpu_kms->base, &kms_funcs);
if (ret) {
DPU_ERROR("failed to init kms, ret=%d\n", ret);
- goto err;
+ return ret;
}
dpu_kms->dev = ddev;
dpu_kms->pdev = pdev;
@@ -1122,10 +1123,7 @@ static int dpu_bind(struct device *dev, struct device *master, void *data)
dpu_kms->rpm_enabled = true;

priv->kms = &dpu_kms->base;
- return ret;
-err:
- dev_pm_opp_of_remove_table(dev);
- dev_pm_opp_put_clkname(dpu_kms->opp_table);
+
return ret;
}

@@ -1141,9 +1139,6 @@ static void dpu_unbind(struct device *dev, struct device *master, void *data)

if (dpu_kms->rpm_enabled)
pm_runtime_disable(&pdev->dev);
-
- dev_pm_opp_of_remove_table(dev);
- dev_pm_opp_put_clkname(dpu_kms->opp_table);
}

static const struct component_ops dpu_ops = {
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
index d6717d6672f7..1483995a94d9 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
@@ -130,8 +130,6 @@ struct dpu_kms {
struct platform_device *pdev;
bool rpm_enabled;

- struct opp_table *opp_table;
-
struct dss_module_power mp;

/* reference count bandwidth requests, so we know when we can
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
index e3462f5d96d7..fdb696ec9d9a 100644
--- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
+++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
@@ -77,8 +77,6 @@ struct dp_ctrl_private {
struct dp_parser *parser;
struct dp_catalog *catalog;

- struct opp_table *opp_table;
-
struct completion idle_comp;
struct completion video_comp;
};
@@ -1873,6 +1871,7 @@ struct dp_ctrl *dp_ctrl_get(struct device *dev, struct dp_link *link,
struct dp_parser *parser)
{
struct dp_ctrl_private *ctrl;
+ struct opp_table *opp_table;
int ret;

if (!dev || !panel || !aux ||
@@ -1887,19 +1886,18 @@ struct dp_ctrl *dp_ctrl_get(struct device *dev, struct dp_link *link,
return ERR_PTR(-ENOMEM);
}

- ctrl->opp_table = dev_pm_opp_set_clkname(dev, "ctrl_link");
- if (IS_ERR(ctrl->opp_table)) {
+ opp_table = devm_pm_opp_set_clkname(dev, "ctrl_link");
+ if (IS_ERR(opp_table)) {
dev_err(dev, "invalid DP OPP table in device tree\n");
- /* caller do PTR_ERR(ctrl->opp_table) */
- return (struct dp_ctrl *)ctrl->opp_table;
+ /* caller do PTR_ERR(opp_table) */
+ return (struct dp_ctrl *)opp_table;
}

/* OPP table is optional */
- ret = dev_pm_opp_of_add_table(dev);
+ ret = devm_pm_opp_of_add_table(dev);
if (ret) {
dev_err(dev, "failed to add DP OPP table\n");
- dev_pm_opp_put_clkname(ctrl->opp_table);
- ctrl->opp_table = NULL;
+ devm_pm_opp_put_clkname(dev, opp_table);
}

init_completion(&ctrl->idle_comp);
@@ -1916,16 +1914,3 @@ struct dp_ctrl *dp_ctrl_get(struct device *dev, struct dp_link *link,

return &ctrl->dp_ctrl;
}
-
-void dp_ctrl_put(struct dp_ctrl *dp_ctrl)
-{
- struct dp_ctrl_private *ctrl;
-
- ctrl = container_of(dp_ctrl, struct dp_ctrl_private, dp_ctrl);
-
- if (ctrl->opp_table) {
- dev_pm_opp_of_remove_table(ctrl->dev);
- dev_pm_opp_put_clkname(ctrl->opp_table);
- ctrl->opp_table = NULL;
- }
-}
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.h b/drivers/gpu/drm/msm/dp/dp_ctrl.h
index f60ba93c8678..dcd6bde2b23d 100644
--- a/drivers/gpu/drm/msm/dp/dp_ctrl.h
+++ b/drivers/gpu/drm/msm/dp/dp_ctrl.h
@@ -31,6 +31,5 @@ struct dp_ctrl *dp_ctrl_get(struct device *dev, struct dp_link *link,
struct dp_panel *panel, struct drm_dp_aux *aux,
struct dp_power *power, struct dp_catalog *catalog,
struct dp_parser *parser);
-void dp_ctrl_put(struct dp_ctrl *dp_ctrl);

#endif /* _DP_CTRL_H_ */
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 6e971d552911..44c1572e7005 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -706,7 +706,6 @@ static int dp_irq_hpd_handle(struct dp_display_private *dp, u32 data)
static void dp_display_deinit_sub_modules(struct dp_display_private *dp)
{
dp_debug_put(dp->debug);
- dp_ctrl_put(dp->ctrl);
dp_panel_put(dp->panel);
dp_aux_put(dp->aux);
dp_audio_put(dp->audio);
@@ -800,13 +799,11 @@ static int dp_init_sub_modules(struct dp_display_private *dp)
rc = PTR_ERR(dp->audio);
pr_err("failed to initialize audio, rc = %d\n", rc);
dp->audio = NULL;
- goto error_audio;
+ goto error_ctrl;
}

return rc;

-error_audio:
- dp_ctrl_put(dp->ctrl);
error_ctrl:
dp_panel_put(dp->panel);
error_link:
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index a282307f2799..30c89dd448b9 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -113,8 +113,6 @@ struct msm_dsi_host {
struct clk *pixel_clk_src;
struct clk *byte_intf_clk;

- struct opp_table *opp_table;
-
u32 byte_clk_rate;
u32 pixel_clk_rate;
u32 esc_clk_rate;
@@ -1822,6 +1820,7 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi)
{
struct msm_dsi_host *msm_host = NULL;
struct platform_device *pdev = msm_dsi->pdev;
+ struct opp_table *opp_table;
int ret;

msm_host = devm_kzalloc(&pdev->dev, sizeof(*msm_host), GFP_KERNEL);
@@ -1886,13 +1885,13 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi)
goto fail;
}

- msm_host->opp_table = dev_pm_opp_set_clkname(&pdev->dev, "byte");
- if (IS_ERR(msm_host->opp_table))
- return PTR_ERR(msm_host->opp_table);
+ opp_table = devm_pm_opp_set_clkname(&pdev->dev, "byte");
+ if (IS_ERR(opp_table))
+ return PTR_ERR(opp_table);
/* OPP table is optional */
- ret = dev_pm_opp_of_add_table(&pdev->dev);
+ ret = devm_pm_opp_of_add_table(&pdev->dev);
if (ret) {
- dev_pm_opp_put_clkname(msm_host->opp_table);
+ devm_pm_opp_put_clkname(&pdev->dev, opp_table);
if (ret != -ENODEV) {
dev_err(&pdev->dev, "invalid OPP table in device tree\n");
return ret;
@@ -1934,8 +1933,6 @@ void msm_dsi_host_destroy(struct mipi_dsi_host *host)
mutex_destroy(&msm_host->cmd_mutex);
mutex_destroy(&msm_host->dev_mutex);

- dev_pm_opp_of_remove_table(&msm_host->pdev->dev);
- dev_pm_opp_put_clkname(msm_host->opp_table);
pm_runtime_disable(&msm_host->pdev->dev);
}

--
2.25.1
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