[DPU PATCH v2 02/12] drm/msm/mdp5: subclass msm_mdss for mdp5

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 v2: - fixed indentation for irq_domain_add_linear call (Sean Paul)

Signed-off-by: Rajesh Yadav ryadav@codeaurora.org Reviewed-by: Sean Paul seanpaul@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