| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Copyright (c) 2015 MediaTek Inc. |
| */ |
| |
| #include <drm/drm_fourcc.h> |
| |
| #include <linux/clk.h> |
| #include <linux/component.h> |
| #include <linux/module.h> |
| #include <linux/of_device.h> |
| #include <linux/of_irq.h> |
| #include <linux/platform_device.h> |
| #include <linux/soc/mediatek/mtk-cmdq.h> |
| |
| #include "mtk_disp_drv.h" |
| #include "mtk_drm_crtc.h" |
| #include "mtk_drm_ddp_comp.h" |
| |
| #define DISP_REG_OVL_INTEN 0x0004 |
| #define OVL_FME_CPL_INT BIT(1) |
| #define DISP_REG_OVL_INTSTA 0x0008 |
| #define DISP_REG_OVL_EN 0x000c |
| #define DISP_REG_OVL_RST 0x0014 |
| #define DISP_REG_OVL_ROI_SIZE 0x0020 |
| #define DISP_REG_OVL_DATAPATH_CON 0x0024 |
| #define OVL_LAYER_SMI_ID_EN BIT(0) |
| #define OVL_BGCLR_SEL_IN BIT(2) |
| #define DISP_REG_OVL_ROI_BGCLR 0x0028 |
| #define DISP_REG_OVL_SRC_CON 0x002c |
| #define DISP_REG_OVL_CON(n) (0x0030 + 0x20 * (n)) |
| #define DISP_REG_OVL_SRC_SIZE(n) (0x0038 + 0x20 * (n)) |
| #define DISP_REG_OVL_OFFSET(n) (0x003c + 0x20 * (n)) |
| #define DISP_REG_OVL_PITCH(n) (0x0044 + 0x20 * (n)) |
| #define DISP_REG_OVL_RDMA_CTRL(n) (0x00c0 + 0x20 * (n)) |
| #define DISP_REG_OVL_RDMA_GMC(n) (0x00c8 + 0x20 * (n)) |
| #define DISP_REG_OVL_ADDR_MT2701 0x0040 |
| #define DISP_REG_OVL_ADDR_MT8173 0x0f40 |
| #define DISP_REG_OVL_ADDR(ovl, n) ((ovl)->data->addr + 0x20 * (n)) |
| |
| #define GMC_THRESHOLD_BITS 16 |
| #define GMC_THRESHOLD_HIGH ((1 << GMC_THRESHOLD_BITS) / 4) |
| #define GMC_THRESHOLD_LOW ((1 << GMC_THRESHOLD_BITS) / 8) |
| |
| #define OVL_CON_BYTE_SWAP BIT(24) |
| #define OVL_CON_MTX_YUV_TO_RGB (6 << 16) |
| #define OVL_CON_CLRFMT_RGB (1 << 12) |
| #define OVL_CON_CLRFMT_RGBA8888 (2 << 12) |
| #define OVL_CON_CLRFMT_ARGB8888 (3 << 12) |
| #define OVL_CON_CLRFMT_UYVY (4 << 12) |
| #define OVL_CON_CLRFMT_YUYV (5 << 12) |
| #define OVL_CON_CLRFMT_RGB565(ovl) ((ovl)->data->fmt_rgb565_is_0 ? \ |
| 0 : OVL_CON_CLRFMT_RGB) |
| #define OVL_CON_CLRFMT_RGB888(ovl) ((ovl)->data->fmt_rgb565_is_0 ? \ |
| OVL_CON_CLRFMT_RGB : 0) |
| #define OVL_CON_AEN BIT(8) |
| #define OVL_CON_ALPHA 0xff |
| #define OVL_CON_VIRT_FLIP BIT(9) |
| #define OVL_CON_HORZ_FLIP BIT(10) |
| |
| struct mtk_disp_ovl_data { |
| unsigned int addr; |
| unsigned int gmc_bits; |
| unsigned int layer_nr; |
| bool fmt_rgb565_is_0; |
| bool smi_id_en; |
| }; |
| |
| /* |
| * struct mtk_disp_ovl - DISP_OVL driver structure |
| * @crtc: associated crtc to report vblank events to |
| * @data: platform data |
| */ |
| struct mtk_disp_ovl { |
| struct drm_crtc *crtc; |
| struct clk *clk; |
| void __iomem *regs; |
| struct cmdq_client_reg cmdq_reg; |
| const struct mtk_disp_ovl_data *data; |
| void (*vblank_cb)(void *data); |
| void *vblank_cb_data; |
| }; |
| |
| static irqreturn_t mtk_disp_ovl_irq_handler(int irq, void *dev_id) |
| { |
| struct mtk_disp_ovl *priv = dev_id; |
| |
| /* Clear frame completion interrupt */ |
| writel(0x0, priv->regs + DISP_REG_OVL_INTSTA); |
| |
| if (!priv->vblank_cb) |
| return IRQ_NONE; |
| |
| priv->vblank_cb(priv->vblank_cb_data); |
| |
| return IRQ_HANDLED; |
| } |
| |
| void mtk_ovl_enable_vblank(struct device *dev, |
| void (*vblank_cb)(void *), |
| void *vblank_cb_data) |
| { |
| struct mtk_disp_ovl *ovl = dev_get_drvdata(dev); |
| |
| ovl->vblank_cb = vblank_cb; |
| ovl->vblank_cb_data = vblank_cb_data; |
| writel(0x0, ovl->regs + DISP_REG_OVL_INTSTA); |
| writel_relaxed(OVL_FME_CPL_INT, ovl->regs + DISP_REG_OVL_INTEN); |
| } |
| |
| void mtk_ovl_disable_vblank(struct device *dev) |
| { |
| struct mtk_disp_ovl *ovl = dev_get_drvdata(dev); |
| |
| ovl->vblank_cb = NULL; |
| ovl->vblank_cb_data = NULL; |
| writel_relaxed(0x0, ovl->regs + DISP_REG_OVL_INTEN); |
| } |
| |
| int mtk_ovl_clk_enable(struct device *dev) |
| { |
| struct mtk_disp_ovl *ovl = dev_get_drvdata(dev); |
| |
| return clk_prepare_enable(ovl->clk); |
| } |
| |
| void mtk_ovl_clk_disable(struct device *dev) |
| { |
| struct mtk_disp_ovl *ovl = dev_get_drvdata(dev); |
| |
| clk_disable_unprepare(ovl->clk); |
| } |
| |
| void mtk_ovl_start(struct device *dev) |
| { |
| struct mtk_disp_ovl *ovl = dev_get_drvdata(dev); |
| |
| if (ovl->data->smi_id_en) { |
| unsigned int reg; |
| |
| reg = readl(ovl->regs + DISP_REG_OVL_DATAPATH_CON); |
| reg = reg | OVL_LAYER_SMI_ID_EN; |
| writel_relaxed(reg, ovl->regs + DISP_REG_OVL_DATAPATH_CON); |
| } |
| writel_relaxed(0x1, ovl->regs + DISP_REG_OVL_EN); |
| } |
| |
| void mtk_ovl_stop(struct device *dev) |
| { |
| struct mtk_disp_ovl *ovl = dev_get_drvdata(dev); |
| |
| writel_relaxed(0x0, ovl->regs + DISP_REG_OVL_EN); |
| if (ovl->data->smi_id_en) { |
| unsigned int reg; |
| |
| reg = readl(ovl->regs + DISP_REG_OVL_DATAPATH_CON); |
| reg = reg & ~OVL_LAYER_SMI_ID_EN; |
| writel_relaxed(reg, ovl->regs + DISP_REG_OVL_DATAPATH_CON); |
| } |
| |
| } |
| |
| void mtk_ovl_config(struct device *dev, unsigned int w, |
| unsigned int h, unsigned int vrefresh, |
| unsigned int bpc, struct cmdq_pkt *cmdq_pkt) |
| { |
| struct mtk_disp_ovl *ovl = dev_get_drvdata(dev); |
| |
| if (w != 0 && h != 0) |
| mtk_ddp_write_relaxed(cmdq_pkt, h << 16 | w, &ovl->cmdq_reg, ovl->regs, |
| DISP_REG_OVL_ROI_SIZE); |
| mtk_ddp_write_relaxed(cmdq_pkt, 0x0, &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_ROI_BGCLR); |
| |
| mtk_ddp_write(cmdq_pkt, 0x1, &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_RST); |
| mtk_ddp_write(cmdq_pkt, 0x0, &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_RST); |
| } |
| |
| unsigned int mtk_ovl_layer_nr(struct device *dev) |
| { |
| struct mtk_disp_ovl *ovl = dev_get_drvdata(dev); |
| |
| return ovl->data->layer_nr; |
| } |
| |
| unsigned int mtk_ovl_supported_rotations(struct device *dev) |
| { |
| return DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180 | |
| DRM_MODE_REFLECT_X | DRM_MODE_REFLECT_Y; |
| } |
| |
| int mtk_ovl_layer_check(struct device *dev, unsigned int idx, |
| struct mtk_plane_state *mtk_state) |
| { |
| struct drm_plane_state *state = &mtk_state->base; |
| unsigned int rotation = 0; |
| |
| rotation = drm_rotation_simplify(state->rotation, |
| DRM_MODE_ROTATE_0 | |
| DRM_MODE_REFLECT_X | |
| DRM_MODE_REFLECT_Y); |
| rotation &= ~DRM_MODE_ROTATE_0; |
| |
| /* We can only do reflection, not rotation */ |
| if ((rotation & DRM_MODE_ROTATE_MASK) != 0) |
| return -EINVAL; |
| |
| /* |
| * TODO: Rotating/reflecting YUV buffers is not supported at this time. |
| * Only RGB[AX] variants are supported. |
| */ |
| if (state->fb->format->is_yuv && rotation != 0) |
| return -EINVAL; |
| |
| state->rotation = rotation; |
| |
| return 0; |
| } |
| |
| void mtk_ovl_layer_on(struct device *dev, unsigned int idx, |
| struct cmdq_pkt *cmdq_pkt) |
| { |
| unsigned int gmc_thrshd_l; |
| unsigned int gmc_thrshd_h; |
| unsigned int gmc_value; |
| struct mtk_disp_ovl *ovl = dev_get_drvdata(dev); |
| |
| mtk_ddp_write(cmdq_pkt, 0x1, &ovl->cmdq_reg, ovl->regs, |
| DISP_REG_OVL_RDMA_CTRL(idx)); |
| gmc_thrshd_l = GMC_THRESHOLD_LOW >> |
| (GMC_THRESHOLD_BITS - ovl->data->gmc_bits); |
| gmc_thrshd_h = GMC_THRESHOLD_HIGH >> |
| (GMC_THRESHOLD_BITS - ovl->data->gmc_bits); |
| if (ovl->data->gmc_bits == 10) |
| gmc_value = gmc_thrshd_h | gmc_thrshd_h << 16; |
| else |
| gmc_value = gmc_thrshd_l | gmc_thrshd_l << 8 | |
| gmc_thrshd_h << 16 | gmc_thrshd_h << 24; |
| mtk_ddp_write(cmdq_pkt, gmc_value, |
| &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_RDMA_GMC(idx)); |
| mtk_ddp_write_mask(cmdq_pkt, BIT(idx), &ovl->cmdq_reg, ovl->regs, |
| DISP_REG_OVL_SRC_CON, BIT(idx)); |
| } |
| |
| void mtk_ovl_layer_off(struct device *dev, unsigned int idx, |
| struct cmdq_pkt *cmdq_pkt) |
| { |
| struct mtk_disp_ovl *ovl = dev_get_drvdata(dev); |
| |
| mtk_ddp_write_mask(cmdq_pkt, 0, &ovl->cmdq_reg, ovl->regs, |
| DISP_REG_OVL_SRC_CON, BIT(idx)); |
| mtk_ddp_write(cmdq_pkt, 0, &ovl->cmdq_reg, ovl->regs, |
| DISP_REG_OVL_RDMA_CTRL(idx)); |
| } |
| |
| static unsigned int ovl_fmt_convert(struct mtk_disp_ovl *ovl, unsigned int fmt) |
| { |
| /* The return value in switch "MEM_MODE_INPUT_FORMAT_XXX" |
| * is defined in mediatek HW data sheet. |
| * The alphabet order in XXX is no relation to data |
| * arrangement in memory. |
| */ |
| switch (fmt) { |
| default: |
| case DRM_FORMAT_RGB565: |
| return OVL_CON_CLRFMT_RGB565(ovl); |
| case DRM_FORMAT_BGR565: |
| return OVL_CON_CLRFMT_RGB565(ovl) | OVL_CON_BYTE_SWAP; |
| case DRM_FORMAT_RGB888: |
| return OVL_CON_CLRFMT_RGB888(ovl); |
| case DRM_FORMAT_BGR888: |
| return OVL_CON_CLRFMT_RGB888(ovl) | OVL_CON_BYTE_SWAP; |
| case DRM_FORMAT_RGBX8888: |
| case DRM_FORMAT_RGBA8888: |
| return OVL_CON_CLRFMT_ARGB8888; |
| case DRM_FORMAT_BGRX8888: |
| case DRM_FORMAT_BGRA8888: |
| return OVL_CON_CLRFMT_ARGB8888 | OVL_CON_BYTE_SWAP; |
| case DRM_FORMAT_XRGB8888: |
| case DRM_FORMAT_ARGB8888: |
| return OVL_CON_CLRFMT_RGBA8888; |
| case DRM_FORMAT_XBGR8888: |
| case DRM_FORMAT_ABGR8888: |
| return OVL_CON_CLRFMT_RGBA8888 | OVL_CON_BYTE_SWAP; |
| case DRM_FORMAT_UYVY: |
| return OVL_CON_CLRFMT_UYVY | OVL_CON_MTX_YUV_TO_RGB; |
| case DRM_FORMAT_YUYV: |
| return OVL_CON_CLRFMT_YUYV | OVL_CON_MTX_YUV_TO_RGB; |
| } |
| } |
| |
| void mtk_ovl_layer_config(struct device *dev, unsigned int idx, |
| struct mtk_plane_state *state, |
| struct cmdq_pkt *cmdq_pkt) |
| { |
| struct mtk_disp_ovl *ovl = dev_get_drvdata(dev); |
| struct mtk_plane_pending_state *pending = &state->pending; |
| unsigned int addr = pending->addr; |
| unsigned int pitch = pending->pitch & 0xffff; |
| unsigned int fmt = pending->format; |
| unsigned int offset = (pending->y << 16) | pending->x; |
| unsigned int src_size = (pending->height << 16) | pending->width; |
| unsigned int con; |
| |
| if (!pending->enable) { |
| mtk_ovl_layer_off(dev, idx, cmdq_pkt); |
| return; |
| } |
| |
| con = ovl_fmt_convert(ovl, fmt); |
| if (state->base.fb && state->base.fb->format->has_alpha) |
| con |= OVL_CON_AEN | OVL_CON_ALPHA; |
| |
| if (pending->rotation & DRM_MODE_REFLECT_Y) { |
| con |= OVL_CON_VIRT_FLIP; |
| addr += (pending->height - 1) * pending->pitch; |
| } |
| |
| if (pending->rotation & DRM_MODE_REFLECT_X) { |
| con |= OVL_CON_HORZ_FLIP; |
| addr += pending->pitch - 1; |
| } |
| |
| mtk_ddp_write_relaxed(cmdq_pkt, con, &ovl->cmdq_reg, ovl->regs, |
| DISP_REG_OVL_CON(idx)); |
| mtk_ddp_write_relaxed(cmdq_pkt, pitch, &ovl->cmdq_reg, ovl->regs, |
| DISP_REG_OVL_PITCH(idx)); |
| mtk_ddp_write_relaxed(cmdq_pkt, src_size, &ovl->cmdq_reg, ovl->regs, |
| DISP_REG_OVL_SRC_SIZE(idx)); |
| mtk_ddp_write_relaxed(cmdq_pkt, offset, &ovl->cmdq_reg, ovl->regs, |
| DISP_REG_OVL_OFFSET(idx)); |
| mtk_ddp_write_relaxed(cmdq_pkt, addr, &ovl->cmdq_reg, ovl->regs, |
| DISP_REG_OVL_ADDR(ovl, idx)); |
| |
| mtk_ovl_layer_on(dev, idx, cmdq_pkt); |
| } |
| |
| void mtk_ovl_bgclr_in_on(struct device *dev) |
| { |
| struct mtk_disp_ovl *ovl = dev_get_drvdata(dev); |
| unsigned int reg; |
| |
| reg = readl(ovl->regs + DISP_REG_OVL_DATAPATH_CON); |
| reg = reg | OVL_BGCLR_SEL_IN; |
| writel(reg, ovl->regs + DISP_REG_OVL_DATAPATH_CON); |
| } |
| |
| void mtk_ovl_bgclr_in_off(struct device *dev) |
| { |
| struct mtk_disp_ovl *ovl = dev_get_drvdata(dev); |
| unsigned int reg; |
| |
| reg = readl(ovl->regs + DISP_REG_OVL_DATAPATH_CON); |
| reg = reg & ~OVL_BGCLR_SEL_IN; |
| writel(reg, ovl->regs + DISP_REG_OVL_DATAPATH_CON); |
| } |
| |
| static int mtk_disp_ovl_bind(struct device *dev, struct device *master, |
| void *data) |
| { |
| return 0; |
| } |
| |
| static void mtk_disp_ovl_unbind(struct device *dev, struct device *master, |
| void *data) |
| { |
| } |
| |
| static const struct component_ops mtk_disp_ovl_component_ops = { |
| .bind = mtk_disp_ovl_bind, |
| .unbind = mtk_disp_ovl_unbind, |
| }; |
| |
| static int mtk_disp_ovl_probe(struct platform_device *pdev) |
| { |
| struct device *dev = &pdev->dev; |
| struct mtk_disp_ovl *priv; |
| struct resource *res; |
| int irq; |
| int ret; |
| |
| priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); |
| if (!priv) |
| return -ENOMEM; |
| |
| irq = platform_get_irq(pdev, 0); |
| if (irq < 0) |
| return irq; |
| |
| priv->clk = devm_clk_get(dev, NULL); |
| if (IS_ERR(priv->clk)) { |
| dev_err(dev, "failed to get ovl clk\n"); |
| return PTR_ERR(priv->clk); |
| } |
| |
| res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| priv->regs = devm_ioremap_resource(dev, res); |
| if (IS_ERR(priv->regs)) { |
| dev_err(dev, "failed to ioremap ovl\n"); |
| return PTR_ERR(priv->regs); |
| } |
| #if IS_REACHABLE(CONFIG_MTK_CMDQ) |
| ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0); |
| if (ret) |
| dev_dbg(dev, "get mediatek,gce-client-reg fail!\n"); |
| #endif |
| |
| priv->data = of_device_get_match_data(dev); |
| platform_set_drvdata(pdev, priv); |
| |
| ret = devm_request_irq(dev, irq, mtk_disp_ovl_irq_handler, |
| IRQF_TRIGGER_NONE, dev_name(dev), priv); |
| if (ret < 0) { |
| dev_err(dev, "Failed to request irq %d: %d\n", irq, ret); |
| return ret; |
| } |
| |
| ret = component_add(dev, &mtk_disp_ovl_component_ops); |
| if (ret) |
| dev_err(dev, "Failed to add component: %d\n", ret); |
| |
| return ret; |
| } |
| |
| static int mtk_disp_ovl_remove(struct platform_device *pdev) |
| { |
| component_del(&pdev->dev, &mtk_disp_ovl_component_ops); |
| |
| return 0; |
| } |
| |
| static const struct mtk_disp_ovl_data mt2701_ovl_driver_data = { |
| .addr = DISP_REG_OVL_ADDR_MT2701, |
| .gmc_bits = 8, |
| .layer_nr = 4, |
| .fmt_rgb565_is_0 = false, |
| }; |
| |
| static const struct mtk_disp_ovl_data mt8173_ovl_driver_data = { |
| .addr = DISP_REG_OVL_ADDR_MT8173, |
| .gmc_bits = 8, |
| .layer_nr = 4, |
| .fmt_rgb565_is_0 = true, |
| }; |
| |
| static const struct mtk_disp_ovl_data mt8183_ovl_driver_data = { |
| .addr = DISP_REG_OVL_ADDR_MT8173, |
| .gmc_bits = 10, |
| .layer_nr = 4, |
| .fmt_rgb565_is_0 = true, |
| }; |
| |
| static const struct mtk_disp_ovl_data mt8183_ovl_2l_driver_data = { |
| .addr = DISP_REG_OVL_ADDR_MT8173, |
| .gmc_bits = 10, |
| .layer_nr = 2, |
| .fmt_rgb565_is_0 = true, |
| }; |
| |
| static const struct mtk_disp_ovl_data mt8192_ovl_driver_data = { |
| .addr = DISP_REG_OVL_ADDR_MT8173, |
| .gmc_bits = 10, |
| .layer_nr = 4, |
| .fmt_rgb565_is_0 = true, |
| .smi_id_en = true, |
| }; |
| |
| static const struct mtk_disp_ovl_data mt8192_ovl_2l_driver_data = { |
| .addr = DISP_REG_OVL_ADDR_MT8173, |
| .gmc_bits = 10, |
| .layer_nr = 2, |
| .fmt_rgb565_is_0 = true, |
| .smi_id_en = true, |
| }; |
| |
| static const struct of_device_id mtk_disp_ovl_driver_dt_match[] = { |
| { .compatible = "mediatek,mt2701-disp-ovl", |
| .data = &mt2701_ovl_driver_data}, |
| { .compatible = "mediatek,mt8173-disp-ovl", |
| .data = &mt8173_ovl_driver_data}, |
| { .compatible = "mediatek,mt8183-disp-ovl", |
| .data = &mt8183_ovl_driver_data}, |
| { .compatible = "mediatek,mt8183-disp-ovl-2l", |
| .data = &mt8183_ovl_2l_driver_data}, |
| { .compatible = "mediatek,mt8192-disp-ovl", |
| .data = &mt8192_ovl_driver_data}, |
| { .compatible = "mediatek,mt8192-disp-ovl-2l", |
| .data = &mt8192_ovl_2l_driver_data}, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(of, mtk_disp_ovl_driver_dt_match); |
| |
| struct platform_driver mtk_disp_ovl_driver = { |
| .probe = mtk_disp_ovl_probe, |
| .remove = mtk_disp_ovl_remove, |
| .driver = { |
| .name = "mediatek-disp-ovl", |
| .owner = THIS_MODULE, |
| .of_match_table = mtk_disp_ovl_driver_dt_match, |
| }, |
| }; |