diff options
Diffstat (limited to 'drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c')
| -rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c | 280 |
1 files changed, 0 insertions, 280 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c deleted file mode 100644 index 6b0a7bc87eb7..000000000000 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c +++ /dev/null @@ -1,280 +0,0 @@ -/* - * SPDX-License-Identifier: GPL-2.0 - * Copyright (c) 2018, The Linux Foundation - */ - -#include <linux/irq.h> -#include <linux/irqchip.h> -#include <linux/irqdesc.h> -#include <linux/irqchip/chained_irq.h> -#include "dpu_kms.h" - -#define to_dpu_mdss(x) container_of(x, struct dpu_mdss, base) - -#define HW_REV 0x0 -#define HW_INTR_STATUS 0x0010 - -#define UBWC_STATIC 0x144 -#define UBWC_CTRL_2 0x150 -#define UBWC_PREDICTION_MODE 0x154 - -/* Max BW defined in KBps */ -#define MAX_BW 6800000 - -struct dpu_irq_controller { - unsigned long enabled_mask; - struct irq_domain *domain; -}; - -struct dpu_mdss { - struct msm_mdss base; - void __iomem *mmio; - struct dss_module_power mp; - struct dpu_irq_controller irq_controller; -}; - -static void dpu_mdss_irq(struct irq_desc *desc) -{ - struct dpu_mdss *dpu_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); - - while (interrupts) { - irq_hw_number_t hwirq = fls(interrupts) - 1; - unsigned int mapping; - int rc; - - mapping = irq_find_mapping(dpu_mdss->irq_controller.domain, - hwirq); - if (mapping == 0) { - DRM_ERROR("couldn't find irq mapping for %lu\n", hwirq); - break; - } - - rc = generic_handle_irq(mapping); - if (rc < 0) { - DRM_ERROR("handle irq fail: irq=%lu mapping=%u rc=%d\n", - hwirq, mapping, rc); - break; - } - - interrupts &= ~(1 << hwirq); - } - - chained_irq_exit(chip, desc); -} - -static void dpu_mdss_irq_mask(struct irq_data *irqd) -{ - struct dpu_mdss *dpu_mdss = irq_data_get_irq_chip_data(irqd); - - /* memory barrier */ - smp_mb__before_atomic(); - clear_bit(irqd->hwirq, &dpu_mdss->irq_controller.enabled_mask); - /* memory barrier */ - smp_mb__after_atomic(); -} - -static void dpu_mdss_irq_unmask(struct irq_data *irqd) -{ - struct dpu_mdss *dpu_mdss = irq_data_get_irq_chip_data(irqd); - - /* memory barrier */ - smp_mb__before_atomic(); - set_bit(irqd->hwirq, &dpu_mdss->irq_controller.enabled_mask); - /* memory barrier */ - smp_mb__after_atomic(); -} - -static struct irq_chip dpu_mdss_irq_chip = { - .name = "dpu_mdss", - .irq_mask = dpu_mdss_irq_mask, - .irq_unmask = dpu_mdss_irq_unmask, -}; - -static struct lock_class_key dpu_mdss_lock_key, dpu_mdss_request_key; - -static int dpu_mdss_irqdomain_map(struct irq_domain *domain, - unsigned int irq, irq_hw_number_t hwirq) -{ - struct dpu_mdss *dpu_mdss = domain->host_data; - - irq_set_lockdep_class(irq, &dpu_mdss_lock_key, &dpu_mdss_request_key); - irq_set_chip_and_handler(irq, &dpu_mdss_irq_chip, handle_level_irq); - return irq_set_chip_data(irq, dpu_mdss); -} - -static const struct irq_domain_ops dpu_mdss_irqdomain_ops = { - .map = dpu_mdss_irqdomain_map, - .xlate = irq_domain_xlate_onecell, -}; - -static int _dpu_mdss_irq_domain_add(struct dpu_mdss *dpu_mdss) -{ - struct device *dev; - struct irq_domain *domain; - - dev = dpu_mdss->base.dev->dev; - - domain = irq_domain_add_linear(dev->of_node, 32, - &dpu_mdss_irqdomain_ops, dpu_mdss); - if (!domain) { - DPU_ERROR("failed to add irq_domain\n"); - return -EINVAL; - } - - dpu_mdss->irq_controller.enabled_mask = 0; - dpu_mdss->irq_controller.domain = domain; - - return 0; -} - -static void _dpu_mdss_irq_domain_fini(struct dpu_mdss *dpu_mdss) -{ - if (dpu_mdss->irq_controller.domain) { - irq_domain_remove(dpu_mdss->irq_controller.domain); - dpu_mdss->irq_controller.domain = NULL; - } -} -static int dpu_mdss_enable(struct msm_mdss *mdss) -{ - struct dpu_mdss *dpu_mdss = to_dpu_mdss(mdss); - struct dss_module_power *mp = &dpu_mdss->mp; - int ret; - - ret = msm_dss_enable_clk(mp->clk_config, mp->num_clk, true); - if (ret) { - DPU_ERROR("clock enable failed, ret:%d\n", ret); - return ret; - } - - /* - * 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)) { - case DPU_HW_VER_500: - case DPU_HW_VER_501: - writel_relaxed(0x420, dpu_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); - break; - case DPU_HW_VER_620: - writel_relaxed(0x1e, dpu_mdss->mmio + UBWC_STATIC); - break; - case DPU_HW_VER_720: - writel_relaxed(0x101e, dpu_mdss->mmio + UBWC_STATIC); - break; - } - - return ret; -} - -static int dpu_mdss_disable(struct msm_mdss *mdss) -{ - struct dpu_mdss *dpu_mdss = to_dpu_mdss(mdss); - struct dss_module_power *mp = &dpu_mdss->mp; - int ret; - - ret = msm_dss_enable_clk(mp->clk_config, mp->num_clk, false); - if (ret) - DPU_ERROR("clock disable failed, ret:%d\n", ret); - - return ret; -} - -static void dpu_mdss_destroy(struct drm_device *dev) -{ - struct platform_device *pdev = to_platform_device(dev->dev); - struct msm_drm_private *priv = dev->dev_private; - struct dpu_mdss *dpu_mdss = to_dpu_mdss(priv->mdss); - struct dss_module_power *mp = &dpu_mdss->mp; - int irq; - - pm_runtime_suspend(dev->dev); - pm_runtime_disable(dev->dev); - _dpu_mdss_irq_domain_fini(dpu_mdss); - irq = platform_get_irq(pdev, 0); - irq_set_chained_handler_and_data(irq, NULL, NULL); - msm_dss_put_clk(mp->clk_config, mp->num_clk); - devm_kfree(&pdev->dev, mp->clk_config); - - if (dpu_mdss->mmio) - devm_iounmap(&pdev->dev, dpu_mdss->mmio); - dpu_mdss->mmio = NULL; - priv->mdss = NULL; -} - -static const struct msm_mdss_funcs mdss_funcs = { - .enable = dpu_mdss_enable, - .disable = dpu_mdss_disable, - .destroy = dpu_mdss_destroy, -}; - -int dpu_mdss_init(struct drm_device *dev) -{ - struct platform_device *pdev = to_platform_device(dev->dev); - struct msm_drm_private *priv = dev->dev_private; - struct dpu_mdss *dpu_mdss; - struct dss_module_power *mp; - int ret; - int irq; - - dpu_mdss = devm_kzalloc(dev->dev, sizeof(*dpu_mdss), GFP_KERNEL); - if (!dpu_mdss) - return -ENOMEM; - - dpu_mdss->mmio = msm_ioremap(pdev, "mdss", "mdss"); - if (IS_ERR(dpu_mdss->mmio)) - return PTR_ERR(dpu_mdss->mmio); - - DRM_DEBUG("mapped mdss address space @%pK\n", dpu_mdss->mmio); - - mp = &dpu_mdss->mp; - ret = msm_dss_parse_clock(pdev, mp); - if (ret) { - DPU_ERROR("failed to parse clocks, ret=%d\n", ret); - goto clk_parse_err; - } - - dpu_mdss->base.dev = dev; - dpu_mdss->base.funcs = &mdss_funcs; - - ret = _dpu_mdss_irq_domain_add(dpu_mdss); - if (ret) - goto irq_domain_error; - - irq = platform_get_irq(pdev, 0); - if (irq < 0) { - ret = irq; - goto irq_error; - } - - irq_set_chained_handler_and_data(irq, dpu_mdss_irq, - dpu_mdss); - - priv->mdss = &dpu_mdss->base; - - pm_runtime_enable(dev->dev); - - return 0; - -irq_error: - _dpu_mdss_irq_domain_fini(dpu_mdss); -irq_domain_error: - msm_dss_put_clk(mp->clk_config, mp->num_clk); -clk_parse_err: - devm_kfree(&pdev->dev, mp->clk_config); - if (dpu_mdss->mmio) - devm_iounmap(&pdev->dev, dpu_mdss->mmio); - dpu_mdss->mmio = NULL; - return ret; -} |