[PATCH v5 2/6] drm/msm: remove extra indirection for msm_mdss

Since now there is just one mdss subdriver, drop all the indirection, make msm_mdss struct completely opaque (and defined inside msm_mdss.c) and call mdss functions directly.

Reviewed-by: Abhinav Kumar quic_abhinavk@quicinc.com Reviewed-by: Stephen Boyd swboyd@chromium.org Signed-off-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org --- drivers/gpu/drm/msm/msm_drv.c | 29 ++++--- drivers/gpu/drm/msm/msm_kms.h | 16 ++-- drivers/gpu/drm/msm/msm_mdss.c | 140 +++++++++++++++------------------ 3 files changed, 83 insertions(+), 102 deletions(-)

diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 82b662812d72..4877d4c90465 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -980,8 +980,8 @@ static int __maybe_unused msm_runtime_suspend(struct device *dev)

DBG("");

- if (mdss && mdss->funcs) - return mdss->funcs->disable(mdss); + if (mdss) + return msm_mdss_disable(mdss);

return 0; } @@ -993,8 +993,8 @@ static int __maybe_unused msm_runtime_resume(struct device *dev)

DBG("");

- if (mdss && mdss->funcs) - return mdss->funcs->enable(mdss); + if (mdss) + return msm_mdss_enable(mdss);

return 0; } @@ -1220,6 +1220,7 @@ static const struct component_master_ops msm_drm_ops = { static int msm_pdev_probe(struct platform_device *pdev) { struct component_match *match = NULL; + struct msm_mdss *mdss; struct msm_drm_private *priv; int ret;

@@ -1231,20 +1232,22 @@ static int msm_pdev_probe(struct platform_device *pdev)

switch (get_mdp_ver(pdev)) { case KMS_MDP5: - ret = msm_mdss_init(pdev, true); + mdss = msm_mdss_init(pdev, true); break; case KMS_DPU: - ret = msm_mdss_init(pdev, false); + mdss = msm_mdss_init(pdev, false); break; default: - ret = 0; + mdss = NULL; break; } - if (ret) { - platform_set_drvdata(pdev, NULL); + if (IS_ERR(mdss)) { + ret = PTR_ERR(mdss); return ret; }

+ priv->mdss = mdss; + if (get_mdp_ver(pdev)) { ret = add_display_components(pdev, &match); if (ret) @@ -1271,8 +1274,8 @@ static int msm_pdev_probe(struct platform_device *pdev) fail: of_platform_depopulate(&pdev->dev);

- if (priv->mdss && priv->mdss->funcs) - priv->mdss->funcs->destroy(priv->mdss); + if (priv->mdss) + msm_mdss_destroy(priv->mdss);

return ret; } @@ -1285,8 +1288,8 @@ static int msm_pdev_remove(struct platform_device *pdev) component_master_del(&pdev->dev, &msm_drm_ops); of_platform_depopulate(&pdev->dev);

- if (mdss && mdss->funcs) - mdss->funcs->destroy(mdss); + if (mdss) + msm_mdss_destroy(mdss);

return 0; } diff --git a/drivers/gpu/drm/msm/msm_kms.h b/drivers/gpu/drm/msm/msm_kms.h index 10d5ae3e76df..09c219988884 100644 --- a/drivers/gpu/drm/msm/msm_kms.h +++ b/drivers/gpu/drm/msm/msm_kms.h @@ -201,18 +201,12 @@ struct msm_kms *dpu_kms_init(struct drm_device *dev); extern const struct of_device_id dpu_dt_match[]; extern const struct of_device_id mdp5_dt_match[];

-struct msm_mdss_funcs { - int (*enable)(struct msm_mdss *mdss); - int (*disable)(struct msm_mdss *mdss); - void (*destroy)(struct msm_mdss *mdss); -}; - -struct msm_mdss { - struct device *dev; - const struct msm_mdss_funcs *funcs; -}; +struct msm_mdss;

-int msm_mdss_init(struct platform_device *pdev, bool is_mdp5); +struct msm_mdss *msm_mdss_init(struct platform_device *pdev, bool is_mdp5); +int msm_mdss_enable(struct msm_mdss *mdss); +int msm_mdss_disable(struct msm_mdss *mdss); +void msm_mdss_destroy(struct msm_mdss *mdss);

#define for_each_crtc_mask(dev, crtc, crtc_mask) \ drm_for_each_crtc(crtc, dev) \ diff --git a/drivers/gpu/drm/msm/msm_mdss.c b/drivers/gpu/drm/msm/msm_mdss.c index f4f92c11bf14..60c90a382b54 100644 --- a/drivers/gpu/drm/msm/msm_mdss.c +++ b/drivers/gpu/drm/msm/msm_mdss.c @@ -3,19 +3,16 @@ * Copyright (c) 2018, The Linux Foundation */

+#include <linux/clk.h> #include <linux/irq.h> #include <linux/irqchip.h> #include <linux/irqdesc.h> #include <linux/irqchip/chained_irq.h> - -#include "msm_drv.h" -#include "msm_kms.h" +#include <linux/pm_runtime.h>

/* for DPU_HW_* defines */ #include "disp/dpu1/dpu_hw_catalog.h"

-#define to_dpu_mdss(x) container_of(x, struct dpu_mdss, base) - #define HW_REV 0x0 #define HW_INTR_STATUS 0x0010

@@ -23,8 +20,9 @@ #define UBWC_CTRL_2 0x150 #define UBWC_PREDICTION_MODE 0x154

-struct dpu_mdss { - struct msm_mdss base; +struct msm_mdss { + struct device *dev; + void __iomem *mmio; struct clk_bulk_data *clocks; size_t num_clocks; @@ -37,22 +35,22 @@ struct dpu_mdss {

static void msm_mdss_irq(struct irq_desc *desc) { - struct dpu_mdss *dpu_mdss = irq_desc_get_handler_data(desc); + struct msm_mdss *msm_mdss = irq_desc_get_handler_data(desc); struct irq_chip *chip = irq_desc_get_chip(desc); u32 interrupts;

chained_irq_enter(chip, desc);

- interrupts = readl_relaxed(dpu_mdss->mmio + HW_INTR_STATUS); + interrupts = readl_relaxed(msm_mdss->mmio + HW_INTR_STATUS);

while (interrupts) { irq_hw_number_t hwirq = fls(interrupts) - 1; int rc;

- rc = generic_handle_domain_irq(dpu_mdss->irq_controller.domain, + rc = generic_handle_domain_irq(msm_mdss->irq_controller.domain, hwirq); if (rc < 0) { - DRM_ERROR("handle irq fail: irq=%lu rc=%d\n", + dev_err(msm_mdss->dev, "handle irq fail: irq=%lu rc=%d\n", hwirq, rc); break; } @@ -65,28 +63,28 @@ static void msm_mdss_irq(struct irq_desc *desc)

static void msm_mdss_irq_mask(struct irq_data *irqd) { - struct dpu_mdss *dpu_mdss = irq_data_get_irq_chip_data(irqd); + struct msm_mdss *msm_mdss = irq_data_get_irq_chip_data(irqd);

/* memory barrier */ smp_mb__before_atomic(); - clear_bit(irqd->hwirq, &dpu_mdss->irq_controller.enabled_mask); + clear_bit(irqd->hwirq, &msm_mdss->irq_controller.enabled_mask); /* memory barrier */ smp_mb__after_atomic(); }

static void msm_mdss_irq_unmask(struct irq_data *irqd) { - struct dpu_mdss *dpu_mdss = irq_data_get_irq_chip_data(irqd); + struct msm_mdss *msm_mdss = irq_data_get_irq_chip_data(irqd);

/* memory barrier */ smp_mb__before_atomic(); - set_bit(irqd->hwirq, &dpu_mdss->irq_controller.enabled_mask); + set_bit(irqd->hwirq, &msm_mdss->irq_controller.enabled_mask); /* memory barrier */ smp_mb__after_atomic(); }

static struct irq_chip msm_mdss_irq_chip = { - .name = "dpu_mdss", + .name = "msm_mdss", .irq_mask = msm_mdss_irq_mask, .irq_unmask = msm_mdss_irq_unmask, }; @@ -96,12 +94,12 @@ static struct lock_class_key msm_mdss_lock_key, msm_mdss_request_key; static int msm_mdss_irqdomain_map(struct irq_domain *domain, unsigned int irq, irq_hw_number_t hwirq) { - struct dpu_mdss *dpu_mdss = domain->host_data; + struct msm_mdss *msm_mdss = domain->host_data;

irq_set_lockdep_class(irq, &msm_mdss_lock_key, &msm_mdss_request_key); irq_set_chip_and_handler(irq, &msm_mdss_irq_chip, handle_level_irq);

- return irq_set_chip_data(irq, dpu_mdss); + return irq_set_chip_data(irq, msm_mdss); }

static const struct irq_domain_ops msm_mdss_irqdomain_ops = { @@ -109,34 +107,33 @@ static const struct irq_domain_ops msm_mdss_irqdomain_ops = { .xlate = irq_domain_xlate_onecell, };

-static int _msm_mdss_irq_domain_add(struct dpu_mdss *dpu_mdss) +static int _msm_mdss_irq_domain_add(struct msm_mdss *msm_mdss) { struct device *dev; struct irq_domain *domain;

- dev = dpu_mdss->base.dev; + dev = msm_mdss->dev;

domain = irq_domain_add_linear(dev->of_node, 32, - &msm_mdss_irqdomain_ops, dpu_mdss); + &msm_mdss_irqdomain_ops, msm_mdss); if (!domain) { - DRM_ERROR("failed to add irq_domain\n"); + dev_err(dev, "failed to add irq_domain\n"); return -EINVAL; }

- dpu_mdss->irq_controller.enabled_mask = 0; - dpu_mdss->irq_controller.domain = domain; + msm_mdss->irq_controller.enabled_mask = 0; + msm_mdss->irq_controller.domain = domain;

return 0; }

-static int msm_mdss_enable(struct msm_mdss *mdss) +int msm_mdss_enable(struct msm_mdss *msm_mdss) { - struct dpu_mdss *dpu_mdss = to_dpu_mdss(mdss); int ret;

- ret = clk_bulk_prepare_enable(dpu_mdss->num_clocks, dpu_mdss->clocks); + ret = clk_bulk_prepare_enable(msm_mdss->num_clocks, msm_mdss->clocks); if (ret) { - DRM_ERROR("clock enable failed, ret:%d\n", ret); + dev_err(msm_mdss->dev, "clock enable failed, ret:%d\n", ret); return ret; }

@@ -144,64 +141,55 @@ static int msm_mdss_enable(struct msm_mdss *mdss) * HW_REV requires MDSS_MDP_CLK, which is not enabled by the mdss on * mdp5 hardware. Skip reading it for now. */ - if (dpu_mdss->is_mdp5) + if (msm_mdss->is_mdp5) return 0;

/* * ubwc config is part of the "mdss" region which is not accessible * from the rest of the driver. hardcode known configurations here */ - switch (readl_relaxed(dpu_mdss->mmio + HW_REV)) { + switch (readl_relaxed(msm_mdss->mmio + HW_REV)) { case DPU_HW_VER_500: case DPU_HW_VER_501: - writel_relaxed(0x420, dpu_mdss->mmio + UBWC_STATIC); + writel_relaxed(0x420, msm_mdss->mmio + UBWC_STATIC); break; case DPU_HW_VER_600: /* TODO: 0x102e for LP_DDR4 */ - writel_relaxed(0x103e, dpu_mdss->mmio + UBWC_STATIC); - writel_relaxed(2, dpu_mdss->mmio + UBWC_CTRL_2); - writel_relaxed(1, dpu_mdss->mmio + UBWC_PREDICTION_MODE); + writel_relaxed(0x103e, msm_mdss->mmio + UBWC_STATIC); + writel_relaxed(2, msm_mdss->mmio + UBWC_CTRL_2); + writel_relaxed(1, msm_mdss->mmio + UBWC_PREDICTION_MODE); break; case DPU_HW_VER_620: - writel_relaxed(0x1e, dpu_mdss->mmio + UBWC_STATIC); + writel_relaxed(0x1e, msm_mdss->mmio + UBWC_STATIC); break; case DPU_HW_VER_720: - writel_relaxed(0x101e, dpu_mdss->mmio + UBWC_STATIC); + writel_relaxed(0x101e, msm_mdss->mmio + UBWC_STATIC); break; }

return ret; }

-static int msm_mdss_disable(struct msm_mdss *mdss) +int msm_mdss_disable(struct msm_mdss *msm_mdss) { - struct dpu_mdss *dpu_mdss = to_dpu_mdss(mdss); - - clk_bulk_disable_unprepare(dpu_mdss->num_clocks, dpu_mdss->clocks); + clk_bulk_disable_unprepare(msm_mdss->num_clocks, msm_mdss->clocks);

return 0; }

-static void msm_mdss_destroy(struct msm_mdss *mdss) +void msm_mdss_destroy(struct msm_mdss *msm_mdss) { - struct platform_device *pdev = to_platform_device(mdss->dev); - struct dpu_mdss *dpu_mdss = to_dpu_mdss(mdss); + struct platform_device *pdev = to_platform_device(msm_mdss->dev); int irq;

- pm_runtime_suspend(mdss->dev); - pm_runtime_disable(mdss->dev); - irq_domain_remove(dpu_mdss->irq_controller.domain); - dpu_mdss->irq_controller.domain = NULL; + pm_runtime_suspend(msm_mdss->dev); + pm_runtime_disable(msm_mdss->dev); + irq_domain_remove(msm_mdss->irq_controller.domain); + msm_mdss->irq_controller.domain = NULL; irq = platform_get_irq(pdev, 0); irq_set_chained_handler_and_data(irq, NULL, NULL); }

-static const struct msm_mdss_funcs mdss_funcs = { - .enable = msm_mdss_enable, - .disable = msm_mdss_disable, - .destroy = msm_mdss_destroy, -}; - /* * MDP5 MDSS uses at most three specified clocks. */ @@ -232,51 +220,47 @@ static int mdp5_mdss_parse_clock(struct platform_device *pdev, struct clk_bulk_d return num_clocks; }

-int msm_mdss_init(struct platform_device *pdev, bool is_mdp5) +struct msm_mdss *msm_mdss_init(struct platform_device *pdev, bool is_mdp5) { - struct msm_drm_private *priv = platform_get_drvdata(pdev); - struct dpu_mdss *dpu_mdss; + struct msm_mdss *msm_mdss; int ret; int irq;

- dpu_mdss = devm_kzalloc(&pdev->dev, sizeof(*dpu_mdss), GFP_KERNEL); - if (!dpu_mdss) - return -ENOMEM; + msm_mdss = devm_kzalloc(&pdev->dev, sizeof(*msm_mdss), GFP_KERNEL); + if (!msm_mdss) + return ERR_PTR(-ENOMEM);

- dpu_mdss->mmio = msm_ioremap(pdev, is_mdp5 ? "mdss_phys" : "mdss"); - if (IS_ERR(dpu_mdss->mmio)) - return PTR_ERR(dpu_mdss->mmio); + msm_mdss->mmio = devm_platform_ioremap_resource_byname(pdev, is_mdp5 ? "mdss_phys" : "mdss"); + if (IS_ERR(msm_mdss->mmio)) + return ERR_CAST(msm_mdss->mmio);

- DRM_DEBUG("mapped mdss address space @%pK\n", dpu_mdss->mmio); + dev_dbg(&pdev->dev, "mapped mdss address space @%pK\n", msm_mdss->mmio);

if (is_mdp5) - ret = mdp5_mdss_parse_clock(pdev, &dpu_mdss->clocks); + ret = mdp5_mdss_parse_clock(pdev, &msm_mdss->clocks); else - ret = devm_clk_bulk_get_all(&pdev->dev, &dpu_mdss->clocks); + ret = devm_clk_bulk_get_all(&pdev->dev, &msm_mdss->clocks); if (ret < 0) { - DRM_ERROR("failed to parse clocks, ret=%d\n", ret); - return ret; + dev_err(&pdev->dev, "failed to parse clocks, ret=%d\n", ret); + return ERR_PTR(ret); } - dpu_mdss->num_clocks = ret; - dpu_mdss->is_mdp5 = is_mdp5; + msm_mdss->num_clocks = ret; + msm_mdss->is_mdp5 = is_mdp5;

- dpu_mdss->base.dev = &pdev->dev; - dpu_mdss->base.funcs = &mdss_funcs; + msm_mdss->dev = &pdev->dev;

irq = platform_get_irq(pdev, 0); if (irq < 0) - return irq; + return ERR_PTR(irq);

- ret = _msm_mdss_irq_domain_add(dpu_mdss); + ret = _msm_mdss_irq_domain_add(msm_mdss); if (ret) - return ret; + return ERR_PTR(ret);

irq_set_chained_handler_and_data(irq, msm_mdss_irq, - dpu_mdss); - - priv->mdss = &dpu_mdss->base; + msm_mdss);

pm_runtime_enable(&pdev->dev);

- return 0; + return msm_mdss; }