Current MSM display controller HW matches a tree like
hierarchy where MDSS top level wrapper is parent device
and mdp5/dpu, dsi, dp are child devices.
Each child device like mdp5, dsi etc. have a separate driver,
but currently dpu handling is tied to a single driver which
was managing both mdss and dpu resources.
Inorder to have the cleaner one to one device and driver
association, this change adds a new platform_driver for dpu
child device node which implements the kms functionality.
The dpu driver implements runtime_pm support for managing clocks
and bus bandwidth etc.
Changes in v2:
- remove redundant param check from _dpu_kms_hw_destroy (Sean Paul)
- remove explicit calls to devm_kfree (Sean Paul)
- merge dpu_init into dpu_bind (Sean Paul)
- merge dpu_destroy into dpu_unbind (Sean Paul)
- use %pK for kernel pointer printing (Jordan Crouse)
- remove explicit devm allocation failure message (Jordan Crouse)
Signed-off-by: Rajesh Yadav <rya...@codeaurora.org>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 238 +++++++++++++++++++++++++-------
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h | 4 +
drivers/gpu/drm/msm/msm_drv.c | 2 +
drivers/gpu/drm/msm/msm_drv.h | 3 +
4 files changed, 196 insertions(+), 51 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index e4ab753..85f3dbc 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -1030,16 +1030,12 @@ static long dpu_kms_round_pixclk(struct msm_kms *kms,
unsigned long rate,
return rate;
}
-static void _dpu_kms_hw_destroy(struct dpu_kms *dpu_kms,
- struct platform_device *pdev)
+static void _dpu_kms_hw_destroy(struct dpu_kms *dpu_kms)
{
struct drm_device *dev;
struct msm_drm_private *priv;
int i;
- if (!dpu_kms || !pdev)
- return;
-
dev = dpu_kms->dev;
if (!dev)
return;
@@ -1091,15 +1087,15 @@ static void _dpu_kms_hw_destroy(struct dpu_kms *dpu_kms,
dpu_kms->core_client = NULL;
if (dpu_kms->vbif[VBIF_NRT])
- msm_iounmap(pdev, dpu_kms->vbif[VBIF_NRT]);
+ msm_iounmap(dpu_kms->pdev, dpu_kms->vbif[VBIF_NRT]);
dpu_kms->vbif[VBIF_NRT] = NULL;
if (dpu_kms->vbif[VBIF_RT])
- msm_iounmap(pdev, dpu_kms->vbif[VBIF_RT]);
+ msm_iounmap(dpu_kms->pdev, dpu_kms->vbif[VBIF_RT]);
dpu_kms->vbif[VBIF_RT] = NULL;
if (dpu_kms->mmio)
- msm_iounmap(pdev, dpu_kms->mmio);
+ msm_iounmap(dpu_kms->pdev, dpu_kms->mmio);
dpu_kms->mmio = NULL;
dpu_reg_dma_deinit();
@@ -1172,8 +1168,6 @@ int dpu_kms_mmu_attach(struct dpu_kms *dpu_kms, bool
secure_only)
static void dpu_kms_destroy(struct msm_kms *kms)
{
struct dpu_kms *dpu_kms;
- struct drm_device *dev;
- struct platform_device *platformdev;
if (!kms) {
DPU_ERROR("invalid kms\n");
@@ -1181,20 +1175,7 @@ static void dpu_kms_destroy(struct msm_kms *kms)
}
dpu_kms = to_dpu_kms(kms);
- dev = dpu_kms->dev;
- if (!dev) {
- DPU_ERROR("invalid device\n");
- return;
- }
-
- platformdev = to_platform_device(dev->dev);
- if (!platformdev) {
- DPU_ERROR("invalid platform device\n");
- return;
- }
-
- _dpu_kms_hw_destroy(dpu_kms, platformdev);
- kfree(dpu_kms);
+ _dpu_kms_hw_destroy(dpu_kms);
}
static void dpu_kms_preclose(struct msm_kms *kms, struct drm_file *file)
@@ -1550,7 +1531,6 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
struct dpu_kms *dpu_kms;
struct drm_device *dev;
struct msm_drm_private *priv;
- struct platform_device *platformdev;
int i, rc = -EINVAL;
if (!kms) {
@@ -1565,34 +1545,28 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
goto end;
}
- platformdev = to_platform_device(dev->dev);
- if (!platformdev) {
- DPU_ERROR("invalid platform device\n");
- goto end;
- }
-
priv = dev->dev_private;
if (!priv) {
DPU_ERROR("invalid private data\n");
goto end;
}
- dpu_kms->mmio = msm_ioremap(platformdev, "mdp_phys", "mdp_phys");
+ dpu_kms->mmio = msm_ioremap(dpu_kms->pdev, "mdp_phys", "mdp_phys");
if (IS_ERR(dpu_kms->mmio)) {
rc = PTR_ERR(dpu_kms->mmio);
DPU_ERROR("mdp register memory map failed: %d\n", rc);
dpu_kms->mmio = NULL;
goto error;
}
- DRM_INFO("mapped mdp address space @%p\n", dpu_kms->mmio);
- dpu_kms->mmio_len = msm_iomap_size(platformdev, "mdp_phys");
+ DRM_DEBUG("mapped dpu address space @%pK\n", dpu_kms->mmio);
+ dpu_kms->mmio_len = msm_iomap_size(dpu_kms->pdev, "mdp_phys");
rc = dpu_dbg_reg_register_base(DPU_DBG_NAME, dpu_kms->mmio,
dpu_kms->mmio_len);
if (rc)
DPU_ERROR("dbg base register kms failed: %d\n", rc);
- dpu_kms->vbif[VBIF_RT] = msm_ioremap(platformdev, "vbif_phys",
+ dpu_kms->vbif[VBIF_RT] = msm_ioremap(dpu_kms->pdev, "vbif_phys",
"vbif_phys");
if (IS_ERR(dpu_kms->vbif[VBIF_RT])) {
rc = PTR_ERR(dpu_kms->vbif[VBIF_RT]);
@@ -1600,20 +1574,20 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
dpu_kms->vbif[VBIF_RT] = NULL;
goto error;
}
- dpu_kms->vbif_len[VBIF_RT] = msm_iomap_size(platformdev,
+ dpu_kms->vbif_len[VBIF_RT] = msm_iomap_size(dpu_kms->pdev,
"vbif_phys");
rc = dpu_dbg_reg_register_base("vbif_rt", dpu_kms->vbif[VBIF_RT],
dpu_kms->vbif_len[VBIF_RT]);
if (rc)
DPU_ERROR("dbg base register vbif_rt failed: %d\n", rc);
- dpu_kms->vbif[VBIF_NRT] = msm_ioremap(platformdev, "vbif_nrt_phys",
+ dpu_kms->vbif[VBIF_NRT] = msm_ioremap(dpu_kms->pdev, "vbif_nrt_phys",
"vbif_nrt_phys");
if (IS_ERR(dpu_kms->vbif[VBIF_NRT])) {
dpu_kms->vbif[VBIF_NRT] = NULL;
DPU_DEBUG("VBIF NRT is not defined");
} else {
- dpu_kms->vbif_len[VBIF_NRT] = msm_iomap_size(platformdev,
+ dpu_kms->vbif_len[VBIF_NRT] = msm_iomap_size(dpu_kms->pdev,
"vbif_nrt_phys");
rc = dpu_dbg_reg_register_base("vbif_nrt",
dpu_kms->vbif[VBIF_NRT],
@@ -1624,13 +1598,13 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
}
#ifdef CONFIG_CHROME_REGDMA
- dpu_kms->reg_dma = msm_ioremap(platformdev, "regdma_phys",
+ dpu_kms->reg_dma = msm_ioremap(dpu_kms->pdev, "regdma_phys",
"regdma_phys");
if (IS_ERR(dpu_kms->reg_dma)) {
dpu_kms->reg_dma = NULL;
DPU_DEBUG("REG_DMA is not defined");
} else {
- dpu_kms->reg_dma_len = msm_iomap_size(platformdev,
+ dpu_kms->reg_dma_len = msm_iomap_size(dpu_kms->pdev,
"regdma_phys");
rc = dpu_dbg_reg_register_base("reg_dma",
dpu_kms->reg_dma,
@@ -1804,14 +1778,13 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
dpu_power_resource_enable(&priv->phandle, dpu_kms->core_client, false);
pm_runtime_put_sync(dev->dev);
error:
- _dpu_kms_hw_destroy(dpu_kms, platformdev);
+ _dpu_kms_hw_destroy(dpu_kms);
end:
return rc;
}
struct msm_kms *dpu_kms_init(struct drm_device *dev)
{
- struct platform_device *pdev = to_platform_device(dev->dev);
struct msm_drm_private *priv;
struct dpu_kms *dpu_kms;
int irq;
@@ -1821,24 +1794,187 @@ struct msm_kms *dpu_kms_init(struct drm_device *dev)
return ERR_PTR(-EINVAL);
}
- irq = platform_get_irq(pdev, 0);
+ priv = dev->dev_private;
+ dpu_kms = to_dpu_kms(priv->kms);
+
+ irq = irq_of_parse_and_map(dpu_kms->pdev->dev.of_node, 0);
if (irq < 0) {
DPU_ERROR("failed to get irq: %d\n", irq);
return ERR_PTR(irq);
}
+ dpu_kms->base.irq = irq;
- priv = dev->dev_private;
+ return &dpu_kms->base;
+}
- dpu_kms = kzalloc(sizeof(*dpu_kms), GFP_KERNEL);
- if (!dpu_kms) {
- DPU_ERROR("failed to allocate dpu kms\n");
- return ERR_PTR(-ENOMEM);
+static int dpu_bind(struct device *dev, struct device *master, void *data)
+{
+ struct drm_device *ddev = dev_get_drvdata(master);
+ struct platform_device *pdev = to_platform_device(dev);
+ struct msm_drm_private *priv = ddev->dev_private;
+ struct dpu_kms *dpu_kms;
+ struct dss_module_power *mp;
+ int ret = 0;
+
+ dpu_kms = devm_kzalloc(&pdev->dev, sizeof(*dpu_kms), GFP_KERNEL);
+ if (!dpu_kms)
+ return -ENOMEM;
+
+ mp = &dpu_kms->mp;
+ ret = msm_dss_parse_clock(pdev, mp);
+ if (ret) {
+ DPU_ERROR("failed to parse clocks, ret=%d\n", ret);
+ return ret;
+ }
+
+ ret = msm_dss_get_clk(&pdev->dev, mp->clk_config, mp->num_clk);
+ if (ret) {
+ pr_err("failed to get clocks, ret=%d\n", ret);
+ goto clk_get_error;
+ }
+
+ ret = msm_dss_clk_set_rate(mp->clk_config, mp->num_clk);
+ if (ret) {
+ pr_err("failed to set clock rate, ret=%d\n", ret);
+ goto clk_rate_error;
}
+ platform_set_drvdata(pdev, dpu_kms);
+
msm_kms_init(&dpu_kms->base, &kms_funcs);
- dpu_kms->dev = dev;
- dpu_kms->base.irq = irq;
+ dpu_kms->dev = ddev;
+ dpu_kms->pdev = pdev;
- return &dpu_kms->base;
+ pm_runtime_enable(&pdev->dev);
+ dpu_kms->rpm_enabled = true;
+
+ priv->kms = &dpu_kms->base;
+ return ret;
+
+clk_rate_error:
+ msm_dss_put_clk(mp->clk_config, mp->num_clk);
+clk_get_error:
+ devm_kfree(&pdev->dev, mp->clk_config);
+ mp->num_clk = 0;
+ return ret;
}
+static void dpu_unbind(struct device *dev, struct device *master, void *data)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct dpu_kms *dpu_kms = platform_get_drvdata(pdev);
+ struct dss_module_power *mp = &dpu_kms->mp;
+
+ msm_dss_put_clk(mp->clk_config, mp->num_clk);
+ devm_kfree(&pdev->dev, mp->clk_config);
+ mp->num_clk = 0;
+
+ if (dpu_kms->rpm_enabled)
+ pm_runtime_disable(&pdev->dev);
+}
+
+static const struct component_ops dpu_ops = {
+ .bind = dpu_bind,
+ .unbind = dpu_unbind,
+};
+
+static int dpu_dev_probe(struct platform_device *pdev)
+{
+ return component_add(&pdev->dev, &dpu_ops);
+}
+
+static int dpu_dev_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &dpu_ops);
+ return 0;
+}
+
+static int dpu_runtime_suspend(struct device *dev)
+{
+ int rc = -1;
+ struct platform_device *pdev = to_platform_device(dev);
+ struct dpu_kms *dpu_kms = platform_get_drvdata(pdev);
+ struct drm_device *ddev;
+ struct msm_drm_private *priv;
+ struct dss_module_power *mp = &dpu_kms->mp;
+
+ ddev = dpu_kms->dev;
+ if (!ddev) {
+ DPU_ERROR("invalid drm_device\n");
+ goto exit;
+ }
+ priv = ddev->dev_private;
+
+ rc = dpu_power_resource_enable(&priv->phandle,
+ dpu_kms->core_client, false);
+ if (rc)
+ DPU_ERROR("resource disable failed: %d\n", rc);
+
+ rc = msm_dss_enable_clk(mp->clk_config, mp->num_clk, false);
+ if (rc)
+ DPU_ERROR("clock disable failed rc:%d\n", rc);
+
+exit:
+ return rc;
+}
+
+static int dpu_runtime_resume(struct device *dev)
+{
+ int rc = -1;
+ struct platform_device *pdev = to_platform_device(dev);
+ struct dpu_kms *dpu_kms = platform_get_drvdata(pdev);
+ struct drm_device *ddev;
+ struct msm_drm_private *priv;
+ struct dss_module_power *mp = &dpu_kms->mp;
+
+ ddev = dpu_kms->dev;
+ if (!ddev) {
+ DPU_ERROR("invalid drm_device\n");
+ goto exit;
+ }
+ priv = ddev->dev_private;
+
+ rc = msm_dss_enable_clk(mp->clk_config, mp->num_clk, true);
+ if (rc) {
+ DPU_ERROR("clock enable failed rc:%d\n", rc);
+ goto exit;
+ }
+
+ rc = dpu_power_resource_enable(&priv->phandle, dpu_kms->core_client,
+ true);
+ if (rc)
+ DPU_ERROR("resource enable failed: %d\n", rc);
+
+exit:
+ return rc;
+}
+
+static const struct dev_pm_ops dpu_pm_ops = {
+ SET_RUNTIME_PM_OPS(dpu_runtime_suspend, dpu_runtime_resume, NULL)
+};
+
+static const struct of_device_id dpu_dt_match[] = {
+ { .compatible = "qcom,dpu", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, dpu_dt_match);
+
+static struct platform_driver dpu_driver = {
+ .probe = dpu_dev_probe,
+ .remove = dpu_dev_remove,
+ .driver = {
+ .name = "msm_dpu",
+ .of_match_table = dpu_dt_match,
+ .pm = &dpu_pm_ops,
+ },
+};
+
+void __init msm_dpu_register(void)
+{
+ platform_driver_register(&dpu_driver);
+}
+
+void __exit msm_dpu_unregister(void)
+{
+ platform_driver_unregister(&dpu_driver);
+}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
index a1c0910..3c69921 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
@@ -200,6 +200,10 @@ struct dpu_kms {
struct dpu_hw_mdp *hw_mdp;
bool has_danger_ctrl;
+
+ struct platform_device *pdev;
+ bool rpm_enabled;
+ struct dss_module_power mp;
};
struct vsync_info {
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index a0e73ea..5470529 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -1731,6 +1731,7 @@ static int __init msm_drm_register(void)
DBG("init");
msm_mdp_register();
+ msm_dpu_register();
msm_dsi_register();
msm_edp_register();
msm_hdmi_register();
@@ -1747,6 +1748,7 @@ static void __exit msm_drm_unregister(void)
msm_edp_unregister();
msm_dsi_unregister();
msm_mdp_unregister();
+ msm_dpu_unregister();
}
module_init(msm_drm_register);
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index e8e5e73..22a3096 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -682,6 +682,9 @@ static inline int msm_dsi_modeset_init(struct msm_dsi
*msm_dsi,
void __init msm_mdp_register(void);
void __exit msm_mdp_unregister(void);
+void __init msm_dpu_register(void);
+void __exit msm_dpu_unregister(void);
+
#ifdef CONFIG_DEBUG_FS
void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m);
void msm_gem_describe_objects(struct list_head *list, struct seq_file *m);
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
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