[Freedreno] [DPU PATCH v3 02/12] drm/msm/mdp5: subclass msm_mdss for mdp5
Rajesh Yadav
ryadav at codeaurora.org
Mon May 14 15:26:49 UTC 2018
SoCs having mdp5 or dpu have identical tree like
device hierarchy where MDSS top level wrapper manages
common power resources for all child devices.
Subclass msm_mdss so that msm_mdss includes common defines
and mdp5/dpu mdss derivations to include any extensions.
Add mdss helper interface (msm_mdss_funcs) to msm_mdss
base for mdp5/dpu mdss specific implementation calls.
This change subclasses msm_mdss for mdp5, dpu specific
changes will be done separately.
Changes in v3:
- none
Changes in v2:
- fixed indentation for irq_domain_add_linear call (Sean Paul)
Signed-off-by: Rajesh Yadav <ryadav at codeaurora.org>
Reviewed-by: Sean Paul <seanpaul at chromium.org>
---
drivers/gpu/drm/msm/disp/mdp5/mdp5_mdss.c | 154 ++++++++++++++++--------------
drivers/gpu/drm/msm/msm_drv.c | 23 +++--
drivers/gpu/drm/msm/msm_kms.h | 20 ++--
3 files changed, 110 insertions(+), 87 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_mdss.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_mdss.c
index f2a0db7..1cc4e57 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_mdss.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_mdss.c
@@ -20,12 +20,10 @@
#include "msm_drv.h"
#include "mdp5_kms.h"
-/*
- * If needed, this can become more specific: something like struct mdp5_mdss,
- * which contains a 'struct msm_mdss base' member.
- */
-struct msm_mdss {
- struct drm_device *dev;
+#define to_mdp5_mdss(x) container_of(x, struct mdp5_mdss, base)
+
+struct mdp5_mdss {
+ struct msm_mdss base;
void __iomem *mmio, *vbif;
@@ -41,22 +39,22 @@ struct msm_mdss {
} irqcontroller;
};
-static inline void mdss_write(struct msm_mdss *mdss, u32 reg, u32 data)
+static inline void mdss_write(struct mdp5_mdss *mdp5_mdss, u32 reg, u32 data)
{
- msm_writel(data, mdss->mmio + reg);
+ msm_writel(data, mdp5_mdss->mmio + reg);
}
-static inline u32 mdss_read(struct msm_mdss *mdss, u32 reg)
+static inline u32 mdss_read(struct mdp5_mdss *mdp5_mdss, u32 reg)
{
- return msm_readl(mdss->mmio + reg);
+ return msm_readl(mdp5_mdss->mmio + reg);
}
static irqreturn_t mdss_irq(int irq, void *arg)
{
- struct msm_mdss *mdss = arg;
+ struct mdp5_mdss *mdp5_mdss = arg;
u32 intr;
- intr = mdss_read(mdss, REG_MDSS_HW_INTR_STATUS);
+ intr = mdss_read(mdp5_mdss, REG_MDSS_HW_INTR_STATUS);
VERB("intr=%08x", intr);
@@ -64,7 +62,7 @@ static irqreturn_t mdss_irq(int irq, void *arg)
irq_hw_number_t hwirq = fls(intr) - 1;
generic_handle_irq(irq_find_mapping(
- mdss->irqcontroller.domain, hwirq));
+ mdp5_mdss->irqcontroller.domain, hwirq));
intr &= ~(1 << hwirq);
}
@@ -84,19 +82,19 @@ static irqreturn_t mdss_irq(int irq, void *arg)
static void mdss_hw_mask_irq(struct irq_data *irqd)
{
- struct msm_mdss *mdss = irq_data_get_irq_chip_data(irqd);
+ struct mdp5_mdss *mdp5_mdss = irq_data_get_irq_chip_data(irqd);
smp_mb__before_atomic();
- clear_bit(irqd->hwirq, &mdss->irqcontroller.enabled_mask);
+ clear_bit(irqd->hwirq, &mdp5_mdss->irqcontroller.enabled_mask);
smp_mb__after_atomic();
}
static void mdss_hw_unmask_irq(struct irq_data *irqd)
{
- struct msm_mdss *mdss = irq_data_get_irq_chip_data(irqd);
+ struct mdp5_mdss *mdp5_mdss = irq_data_get_irq_chip_data(irqd);
smp_mb__before_atomic();
- set_bit(irqd->hwirq, &mdss->irqcontroller.enabled_mask);
+ set_bit(irqd->hwirq, &mdp5_mdss->irqcontroller.enabled_mask);
smp_mb__after_atomic();
}
@@ -109,13 +107,13 @@ static void mdss_hw_unmask_irq(struct irq_data *irqd)
static int mdss_hw_irqdomain_map(struct irq_domain *d, unsigned int irq,
irq_hw_number_t hwirq)
{
- struct msm_mdss *mdss = d->host_data;
+ struct mdp5_mdss *mdp5_mdss = d->host_data;
if (!(VALID_IRQS & (1 << hwirq)))
return -EPERM;
irq_set_chip_and_handler(irq, &mdss_hw_irq_chip, handle_level_irq);
- irq_set_chip_data(irq, mdss);
+ irq_set_chip_data(irq, mdp5_mdss);
return 0;
}
@@ -126,90 +124,99 @@ static int mdss_hw_irqdomain_map(struct irq_domain *d, unsigned int irq,
};
-static int mdss_irq_domain_init(struct msm_mdss *mdss)
+static int mdss_irq_domain_init(struct mdp5_mdss *mdp5_mdss)
{
- struct device *dev = mdss->dev->dev;
+ struct device *dev = mdp5_mdss->base.dev->dev;
struct irq_domain *d;
d = irq_domain_add_linear(dev->of_node, 32, &mdss_hw_irqdomain_ops,
- mdss);
+ mdp5_mdss);
if (!d) {
dev_err(dev, "mdss irq domain add failed\n");
return -ENXIO;
}
- mdss->irqcontroller.enabled_mask = 0;
- mdss->irqcontroller.domain = d;
+ mdp5_mdss->irqcontroller.enabled_mask = 0;
+ mdp5_mdss->irqcontroller.domain = d;
return 0;
}
-int msm_mdss_enable(struct msm_mdss *mdss)
+static int mdp5_mdss_enable(struct msm_mdss *mdss)
{
+ struct mdp5_mdss *mdp5_mdss = to_mdp5_mdss(mdss);
DBG("");
- clk_prepare_enable(mdss->ahb_clk);
- if (mdss->axi_clk)
- clk_prepare_enable(mdss->axi_clk);
- if (mdss->vsync_clk)
- clk_prepare_enable(mdss->vsync_clk);
+ clk_prepare_enable(mdp5_mdss->ahb_clk);
+ if (mdp5_mdss->axi_clk)
+ clk_prepare_enable(mdp5_mdss->axi_clk);
+ if (mdp5_mdss->vsync_clk)
+ clk_prepare_enable(mdp5_mdss->vsync_clk);
return 0;
}
-int msm_mdss_disable(struct msm_mdss *mdss)
+static int mdp5_mdss_disable(struct msm_mdss *mdss)
{
+ struct mdp5_mdss *mdp5_mdss = to_mdp5_mdss(mdss);
DBG("");
- if (mdss->vsync_clk)
- clk_disable_unprepare(mdss->vsync_clk);
- if (mdss->axi_clk)
- clk_disable_unprepare(mdss->axi_clk);
- clk_disable_unprepare(mdss->ahb_clk);
+ if (mdp5_mdss->vsync_clk)
+ clk_disable_unprepare(mdp5_mdss->vsync_clk);
+ if (mdp5_mdss->axi_clk)
+ clk_disable_unprepare(mdp5_mdss->axi_clk);
+ clk_disable_unprepare(mdp5_mdss->ahb_clk);
return 0;
}
-static int msm_mdss_get_clocks(struct msm_mdss *mdss)
+static int msm_mdss_get_clocks(struct mdp5_mdss *mdp5_mdss)
{
- struct platform_device *pdev = to_platform_device(mdss->dev->dev);
+ struct platform_device *pdev =
+ to_platform_device(mdp5_mdss->base.dev->dev);
- mdss->ahb_clk = msm_clk_get(pdev, "iface");
- if (IS_ERR(mdss->ahb_clk))
- mdss->ahb_clk = NULL;
+ mdp5_mdss->ahb_clk = msm_clk_get(pdev, "iface");
+ if (IS_ERR(mdp5_mdss->ahb_clk))
+ mdp5_mdss->ahb_clk = NULL;
- mdss->axi_clk = msm_clk_get(pdev, "bus");
- if (IS_ERR(mdss->axi_clk))
- mdss->axi_clk = NULL;
+ mdp5_mdss->axi_clk = msm_clk_get(pdev, "bus");
+ if (IS_ERR(mdp5_mdss->axi_clk))
+ mdp5_mdss->axi_clk = NULL;
- mdss->vsync_clk = msm_clk_get(pdev, "vsync");
- if (IS_ERR(mdss->vsync_clk))
- mdss->vsync_clk = NULL;
+ mdp5_mdss->vsync_clk = msm_clk_get(pdev, "vsync");
+ if (IS_ERR(mdp5_mdss->vsync_clk))
+ mdp5_mdss->vsync_clk = NULL;
return 0;
}
-void msm_mdss_destroy(struct drm_device *dev)
+static void mdp5_mdss_destroy(struct drm_device *dev)
{
struct msm_drm_private *priv = dev->dev_private;
- struct msm_mdss *mdss = priv->mdss;
+ struct mdp5_mdss *mdp5_mdss = to_mdp5_mdss(priv->mdss);
- if (!mdss)
+ if (!mdp5_mdss)
return;
- irq_domain_remove(mdss->irqcontroller.domain);
- mdss->irqcontroller.domain = NULL;
+ irq_domain_remove(mdp5_mdss->irqcontroller.domain);
+ mdp5_mdss->irqcontroller.domain = NULL;
- regulator_disable(mdss->vdd);
+ regulator_disable(mdp5_mdss->vdd);
pm_runtime_disable(dev->dev);
}
-int msm_mdss_init(struct drm_device *dev)
+static const struct msm_mdss_funcs mdss_funcs = {
+ .enable = mdp5_mdss_enable,
+ .disable = mdp5_mdss_disable,
+ .destroy = mdp5_mdss_destroy,
+};
+
+int mdp5_mdss_init(struct drm_device *dev)
{
struct platform_device *pdev = to_platform_device(dev->dev);
struct msm_drm_private *priv = dev->dev_private;
- struct msm_mdss *mdss;
+ struct mdp5_mdss *mdp5_mdss;
int ret;
DBG("");
@@ -217,40 +224,40 @@ int msm_mdss_init(struct drm_device *dev)
if (!of_device_is_compatible(dev->dev->of_node, "qcom,mdss"))
return 0;
- mdss = devm_kzalloc(dev->dev, sizeof(*mdss), GFP_KERNEL);
- if (!mdss) {
+ mdp5_mdss = devm_kzalloc(dev->dev, sizeof(*mdp5_mdss), GFP_KERNEL);
+ if (!mdp5_mdss) {
ret = -ENOMEM;
goto fail;
}
- mdss->dev = dev;
+ mdp5_mdss->base.dev = dev;
- mdss->mmio = msm_ioremap(pdev, "mdss_phys", "MDSS");
- if (IS_ERR(mdss->mmio)) {
- ret = PTR_ERR(mdss->mmio);
+ mdp5_mdss->mmio = msm_ioremap(pdev, "mdss_phys", "MDSS");
+ if (IS_ERR(mdp5_mdss->mmio)) {
+ ret = PTR_ERR(mdp5_mdss->mmio);
goto fail;
}
- mdss->vbif = msm_ioremap(pdev, "vbif_phys", "VBIF");
- if (IS_ERR(mdss->vbif)) {
- ret = PTR_ERR(mdss->vbif);
+ mdp5_mdss->vbif = msm_ioremap(pdev, "vbif_phys", "VBIF");
+ if (IS_ERR(mdp5_mdss->vbif)) {
+ ret = PTR_ERR(mdp5_mdss->vbif);
goto fail;
}
- ret = msm_mdss_get_clocks(mdss);
+ ret = msm_mdss_get_clocks(mdp5_mdss);
if (ret) {
dev_err(dev->dev, "failed to get clocks: %d\n", ret);
goto fail;
}
/* Regulator to enable GDSCs in downstream kernels */
- mdss->vdd = devm_regulator_get(dev->dev, "vdd");
- if (IS_ERR(mdss->vdd)) {
- ret = PTR_ERR(mdss->vdd);
+ mdp5_mdss->vdd = devm_regulator_get(dev->dev, "vdd");
+ if (IS_ERR(mdp5_mdss->vdd)) {
+ ret = PTR_ERR(mdp5_mdss->vdd);
goto fail;
}
- ret = regulator_enable(mdss->vdd);
+ ret = regulator_enable(mdp5_mdss->vdd);
if (ret) {
dev_err(dev->dev, "failed to enable regulator vdd: %d\n",
ret);
@@ -258,25 +265,26 @@ int msm_mdss_init(struct drm_device *dev)
}
ret = devm_request_irq(dev->dev, platform_get_irq(pdev, 0),
- mdss_irq, 0, "mdss_isr", mdss);
+ mdss_irq, 0, "mdss_isr", mdp5_mdss);
if (ret) {
dev_err(dev->dev, "failed to init irq: %d\n", ret);
goto fail_irq;
}
- ret = mdss_irq_domain_init(mdss);
+ ret = mdss_irq_domain_init(mdp5_mdss);
if (ret) {
dev_err(dev->dev, "failed to init sub-block irqs: %d\n", ret);
goto fail_irq;
}
- priv->mdss = mdss;
+ mdp5_mdss->base.funcs = &mdss_funcs;
+ priv->mdss = &mdp5_mdss->base;
pm_runtime_enable(dev->dev);
return 0;
fail_irq:
- regulator_disable(mdss->vdd);
+ regulator_disable(mdp5_mdss->vdd);
fail:
return ret;
}
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 9bb436f..5d8f1b6 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -270,6 +270,7 @@ static int msm_drm_uninit(struct device *dev)
struct drm_device *ddev = platform_get_drvdata(pdev);
struct msm_drm_private *priv = ddev->dev_private;
struct msm_kms *kms = priv->kms;
+ struct msm_mdss *mdss = priv->mdss;
struct msm_vblank_ctrl *vbl_ctrl = &priv->vblank_ctrl;
struct vblank_event *vbl_ev, *tmp;
int i;
@@ -346,8 +347,8 @@ static int msm_drm_uninit(struct device *dev)
debugfs_remove_recursive(priv->debug_root);
- msm_mdss_destroy(ddev);
-
+ if (mdss && mdss->funcs)
+ mdss->funcs->destroy(ddev);
ddev->dev_private = NULL;
kfree(priv);
@@ -476,6 +477,7 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv)
struct drm_device *ddev;
struct msm_drm_private *priv;
struct msm_kms *kms;
+ struct msm_mdss *mdss;
#ifdef CONFIG_DRM_MSM_DPU
struct dpu_dbg_power_ctrl dbg_power_ctrl = { 0 };
@@ -501,10 +503,12 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv)
ddev->dev_private = priv;
priv->dev = ddev;
- ret = msm_mdss_init(ddev);
+ ret = mdp5_mdss_init(ddev);
if (ret)
goto mdss_init_fail;
+ mdss = priv->mdss;
+
priv->wq = alloc_ordered_workqueue("msm", 0);
INIT_LIST_HEAD(&priv->client_event_list);
@@ -746,7 +750,8 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv)
dpu_power_resource_deinit(pdev, &priv->phandle);
power_init_fail:
#endif
- msm_mdss_destroy(ddev);
+ if (mdss && mdss->funcs)
+ mdss->funcs->destroy(ddev);
mdss_init_fail:
kfree(priv);
priv_alloc_fail:
@@ -1416,11 +1421,12 @@ static int msm_runtime_suspend(struct device *dev)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct msm_drm_private *priv = ddev->dev_private;
+ struct msm_mdss *mdss = priv->mdss;
DBG("");
- if (priv->mdss)
- return 0; // msm_mdss_disable(priv->mdss);
+ if (mdss && mdss->funcs)
+ mdss->funcs->disable(mdss);
return 0;
}
@@ -1429,11 +1435,12 @@ static int msm_runtime_resume(struct device *dev)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct msm_drm_private *priv = ddev->dev_private;
+ struct msm_mdss *mdss = priv->mdss;
DBG("");
- if (priv->mdss)
- return 0;//msm_mdss_enable(priv->mdss);
+ if (mdss && mdss->funcs)
+ mdss->funcs->enable(mdss);
return 0;
}
diff --git a/drivers/gpu/drm/msm/msm_kms.h b/drivers/gpu/drm/msm/msm_kms.h
index 5b09ce5..9a7bc7d 100644
--- a/drivers/gpu/drm/msm/msm_kms.h
+++ b/drivers/gpu/drm/msm/msm_kms.h
@@ -126,16 +126,24 @@ static inline void msm_kms_init(struct msm_kms *kms,
kms->funcs = funcs;
}
-struct msm_kms *mdp4_kms_init(struct drm_device *dev);
-
-int msm_mdss_init(struct drm_device *dev);
-void msm_mdss_destroy(struct drm_device *dev);
struct msm_kms *mdp5_kms_init(struct drm_device *dev);
struct msm_kms *dpu_kms_init(struct drm_device *dev);
-int msm_mdss_enable(struct msm_mdss *mdss);
-int msm_mdss_disable(struct msm_mdss *mdss);
+struct msm_kms *mdp4_kms_init(struct drm_device *dev);
+
+struct msm_mdss_funcs {
+ int (*enable)(struct msm_mdss *mdss);
+ int (*disable)(struct msm_mdss *mdss);
+ void (*destroy)(struct drm_device *dev);
+};
+
+struct msm_mdss {
+ struct drm_device *dev;
+ const struct msm_mdss_funcs *funcs;
+};
+
+int mdp5_mdss_init(struct drm_device *dev);
/**
* Mode Set Utility Functions
--
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