diff options
Diffstat (limited to 'drivers/gpu/drm/mediatek/mtk_ethdr.c')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_ethdr.c | 370 |
1 files changed, 370 insertions, 0 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_ethdr.c b/drivers/gpu/drm/mediatek/mtk_ethdr.c new file mode 100644 index 000000000000..73dc4da3ba3b --- /dev/null +++ b/drivers/gpu/drm/mediatek/mtk_ethdr.c @@ -0,0 +1,370 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2021 MediaTek Inc. + */ + +#include <drm/drm_fourcc.h> +#include <drm/drm_framebuffer.h> +#include <linux/clk.h> +#include <linux/component.h> +#include <linux/of_device.h> +#include <linux/of_address.h> +#include <linux/platform_device.h> +#include <linux/reset.h> +#include <linux/soc/mediatek/mtk-cmdq.h> +#include <linux/soc/mediatek/mtk-mmsys.h> + +#include "mtk_drm_crtc.h" +#include "mtk_drm_ddp_comp.h" +#include "mtk_drm_drv.h" +#include "mtk_ethdr.h" + +#define MIX_INTEN 0x4 +#define MIX_FME_CPL_INTEN BIT(1) +#define MIX_INTSTA 0x8 +#define MIX_EN 0xc +#define MIX_RST 0x14 +#define MIX_ROI_SIZE 0x18 +#define MIX_DATAPATH_CON 0x1c +#define OUTPUT_NO_RND BIT(3) +#define SOURCE_RGB_SEL BIT(7) +#define BACKGROUND_RELAY (4 << 9) +#define MIX_ROI_BGCLR 0x20 +#define BGCLR_BLACK 0xff000000 +#define MIX_SRC_CON 0x24 +#define MIX_SRC_L0_EN BIT(0) +#define MIX_L_SRC_CON(n) (0x28 + 0x18 * (n)) +#define NON_PREMULTI_SOURCE (2 << 12) +#define MIX_L_SRC_SIZE(n) (0x30 + 0x18 * (n)) +#define MIX_L_SRC_OFFSET(n) (0x34 + 0x18 * (n)) +#define MIX_FUNC_DCM0 0x120 +#define MIX_FUNC_DCM1 0x124 +#define MIX_FUNC_DCM_ENABLE 0xffffffff + +#define HDR_VDO_FE_0804_HDR_DM_FE 0x804 +#define HDR_VDO_FE_0804_BYPASS_ALL 0xfd +#define HDR_GFX_FE_0204_GFX_HDR_FE 0x204 +#define HDR_GFX_FE_0204_BYPASS_ALL 0xfd +#define HDR_VDO_BE_0204_VDO_DM_BE 0x204 +#define HDR_VDO_BE_0204_BYPASS_ALL 0x7e + +#define MIXER_INX_MODE_BYPASS 0 +#define MIXER_INX_MODE_EVEN_EXTEND 1 +#define DEFAULT_9BIT_ALPHA 0x100 +#define MIXER_ALPHA_AEN BIT(8) +#define MIXER_ALPHA 0xff +#define ETHDR_CLK_NUM 13 + +enum mtk_ethdr_comp_id { + ETHDR_MIXER, + ETHDR_VDO_FE0, + ETHDR_VDO_FE1, + ETHDR_GFX_FE0, + ETHDR_GFX_FE1, + ETHDR_VDO_BE, + ETHDR_ADL_DS, + ETHDR_ID_MAX +}; + +struct mtk_ethdr_comp { + struct device *dev; + void __iomem *regs; + struct cmdq_client_reg cmdq_base; +}; + +struct mtk_ethdr { + struct mtk_ethdr_comp ethdr_comp[ETHDR_ID_MAX]; + struct clk_bulk_data ethdr_clk[ETHDR_CLK_NUM]; + struct device *mmsys_dev; + void (*vblank_cb)(void *data); + void *vblank_cb_data; + int irq; + struct reset_control *reset_ctl; +}; + +static const char * const ethdr_clk_str[] = { + "ethdr_top", + "mixer", + "vdo_fe0", + "vdo_fe1", + "gfx_fe0", + "gfx_fe1", + "vdo_be", + "adl_ds", + "vdo_fe0_async", + "vdo_fe1_async", + "gfx_fe0_async", + "gfx_fe1_async", + "vdo_be_async", +}; + +void mtk_ethdr_register_vblank_cb(struct device *dev, + void (*vblank_cb)(void *), + void *vblank_cb_data) +{ + struct mtk_ethdr *priv = dev_get_drvdata(dev); + + priv->vblank_cb = vblank_cb; + priv->vblank_cb_data = vblank_cb_data; +} + +void mtk_ethdr_unregister_vblank_cb(struct device *dev) +{ + struct mtk_ethdr *priv = dev_get_drvdata(dev); + + priv->vblank_cb = NULL; + priv->vblank_cb_data = NULL; +} + +void mtk_ethdr_enable_vblank(struct device *dev) +{ + struct mtk_ethdr *priv = dev_get_drvdata(dev); + + writel(MIX_FME_CPL_INTEN, priv->ethdr_comp[ETHDR_MIXER].regs + MIX_INTEN); +} + +void mtk_ethdr_disable_vblank(struct device *dev) +{ + struct mtk_ethdr *priv = dev_get_drvdata(dev); + + writel(0x0, priv->ethdr_comp[ETHDR_MIXER].regs + MIX_INTEN); +} + +static irqreturn_t mtk_ethdr_irq_handler(int irq, void *dev_id) +{ + struct mtk_ethdr *priv = dev_id; + + writel(0x0, priv->ethdr_comp[ETHDR_MIXER].regs + MIX_INTSTA); + + if (!priv->vblank_cb) + return IRQ_NONE; + + priv->vblank_cb(priv->vblank_cb_data); + + return IRQ_HANDLED; +} + +void mtk_ethdr_layer_config(struct device *dev, unsigned int idx, + struct mtk_plane_state *state, + struct cmdq_pkt *cmdq_pkt) +{ + struct mtk_ethdr *priv = dev_get_drvdata(dev); + struct mtk_ethdr_comp *mixer = &priv->ethdr_comp[ETHDR_MIXER]; + struct mtk_plane_pending_state *pending = &state->pending; + unsigned int offset = (pending->x & 1) << 31 | pending->y << 16 | pending->x; + unsigned int align_width = ALIGN_DOWN(pending->width, 2); + unsigned int alpha_con = 0; + + dev_dbg(dev, "%s+ idx:%d", __func__, idx); + + if (idx >= 4) + return; + + if (!pending->enable) { + mtk_ddp_write(cmdq_pkt, 0, &mixer->cmdq_base, mixer->regs, MIX_L_SRC_SIZE(idx)); + return; + } + + if (state->base.fb && state->base.fb->format->has_alpha) + alpha_con = MIXER_ALPHA_AEN | MIXER_ALPHA; + + mtk_mmsys_mixer_in_config(priv->mmsys_dev, idx + 1, alpha_con ? false : true, + DEFAULT_9BIT_ALPHA, + pending->x & 1 ? MIXER_INX_MODE_EVEN_EXTEND : + MIXER_INX_MODE_BYPASS, align_width / 2 - 1, cmdq_pkt); + + mtk_ddp_write(cmdq_pkt, pending->height << 16 | align_width, &mixer->cmdq_base, + mixer->regs, MIX_L_SRC_SIZE(idx)); + mtk_ddp_write(cmdq_pkt, offset, &mixer->cmdq_base, mixer->regs, MIX_L_SRC_OFFSET(idx)); + mtk_ddp_write_mask(cmdq_pkt, alpha_con, &mixer->cmdq_base, mixer->regs, MIX_L_SRC_CON(idx), + 0x1ff); + mtk_ddp_write_mask(cmdq_pkt, BIT(idx), &mixer->cmdq_base, mixer->regs, MIX_SRC_CON, + BIT(idx)); +} + +void mtk_ethdr_config(struct device *dev, unsigned int w, + unsigned int h, unsigned int vrefresh, + unsigned int bpc, struct cmdq_pkt *cmdq_pkt) +{ + struct mtk_ethdr *priv = dev_get_drvdata(dev); + struct mtk_ethdr_comp *vdo_fe0 = &priv->ethdr_comp[ETHDR_VDO_FE0]; + struct mtk_ethdr_comp *vdo_fe1 = &priv->ethdr_comp[ETHDR_VDO_FE1]; + struct mtk_ethdr_comp *gfx_fe0 = &priv->ethdr_comp[ETHDR_GFX_FE0]; + struct mtk_ethdr_comp *gfx_fe1 = &priv->ethdr_comp[ETHDR_GFX_FE1]; + struct mtk_ethdr_comp *vdo_be = &priv->ethdr_comp[ETHDR_VDO_BE]; + struct mtk_ethdr_comp *mixer = &priv->ethdr_comp[ETHDR_MIXER]; + + dev_dbg(dev, "%s-w:%d, h:%d\n", __func__, w, h); + + mtk_ddp_write(cmdq_pkt, HDR_VDO_FE_0804_BYPASS_ALL, &vdo_fe0->cmdq_base, + vdo_fe0->regs, HDR_VDO_FE_0804_HDR_DM_FE); + + mtk_ddp_write(cmdq_pkt, HDR_VDO_FE_0804_BYPASS_ALL, &vdo_fe1->cmdq_base, + vdo_fe1->regs, HDR_VDO_FE_0804_HDR_DM_FE); + + mtk_ddp_write(cmdq_pkt, HDR_GFX_FE_0204_BYPASS_ALL, &gfx_fe0->cmdq_base, + gfx_fe0->regs, HDR_GFX_FE_0204_GFX_HDR_FE); + + mtk_ddp_write(cmdq_pkt, HDR_GFX_FE_0204_BYPASS_ALL, &gfx_fe1->cmdq_base, + gfx_fe1->regs, HDR_GFX_FE_0204_GFX_HDR_FE); + + mtk_ddp_write(cmdq_pkt, HDR_VDO_BE_0204_BYPASS_ALL, &vdo_be->cmdq_base, + vdo_be->regs, HDR_VDO_BE_0204_VDO_DM_BE); + + mtk_ddp_write(cmdq_pkt, MIX_FUNC_DCM_ENABLE, &mixer->cmdq_base, mixer->regs, MIX_FUNC_DCM0); + mtk_ddp_write(cmdq_pkt, MIX_FUNC_DCM_ENABLE, &mixer->cmdq_base, mixer->regs, MIX_FUNC_DCM1); + mtk_ddp_write(cmdq_pkt, h << 16 | w, &mixer->cmdq_base, mixer->regs, MIX_ROI_SIZE); + mtk_ddp_write(cmdq_pkt, BGCLR_BLACK, &mixer->cmdq_base, mixer->regs, MIX_ROI_BGCLR); + mtk_ddp_write(cmdq_pkt, NON_PREMULTI_SOURCE, &mixer->cmdq_base, mixer->regs, + MIX_L_SRC_CON(0)); + mtk_ddp_write(cmdq_pkt, NON_PREMULTI_SOURCE, &mixer->cmdq_base, mixer->regs, + MIX_L_SRC_CON(1)); + mtk_ddp_write(cmdq_pkt, NON_PREMULTI_SOURCE, &mixer->cmdq_base, mixer->regs, + MIX_L_SRC_CON(2)); + mtk_ddp_write(cmdq_pkt, NON_PREMULTI_SOURCE, &mixer->cmdq_base, mixer->regs, + MIX_L_SRC_CON(3)); + mtk_ddp_write(cmdq_pkt, 0x0, &mixer->cmdq_base, mixer->regs, MIX_L_SRC_SIZE(0)); + mtk_ddp_write(cmdq_pkt, OUTPUT_NO_RND | SOURCE_RGB_SEL | BACKGROUND_RELAY, + &mixer->cmdq_base, mixer->regs, MIX_DATAPATH_CON); + mtk_ddp_write_mask(cmdq_pkt, MIX_SRC_L0_EN, &mixer->cmdq_base, mixer->regs, + MIX_SRC_CON, MIX_SRC_L0_EN); + + mtk_mmsys_hdr_config(priv->mmsys_dev, w / 2, h, cmdq_pkt); + mtk_mmsys_mixer_in_channel_swap(priv->mmsys_dev, 4, 0, cmdq_pkt); +} + +void mtk_ethdr_start(struct device *dev) +{ + struct mtk_ethdr *priv = dev_get_drvdata(dev); + struct mtk_ethdr_comp *mixer = &priv->ethdr_comp[ETHDR_MIXER]; + + writel(1, mixer->regs + MIX_EN); +} + +void mtk_ethdr_stop(struct device *dev) +{ + struct mtk_ethdr *priv = dev_get_drvdata(dev); + struct mtk_ethdr_comp *mixer = &priv->ethdr_comp[ETHDR_MIXER]; + + writel(0, mixer->regs + MIX_EN); + writel(1, mixer->regs + MIX_RST); + reset_control_reset(priv->reset_ctl); + writel(0, mixer->regs + MIX_RST); +} + +int mtk_ethdr_clk_enable(struct device *dev) +{ + int ret; + struct mtk_ethdr *priv = dev_get_drvdata(dev); + + ret = clk_bulk_prepare_enable(ETHDR_CLK_NUM, priv->ethdr_clk); + if (ret) + dev_err(dev, + "ethdr_clk prepare enable failed\n"); + return ret; +} + +void mtk_ethdr_clk_disable(struct device *dev) +{ + struct mtk_ethdr *priv = dev_get_drvdata(dev); + + clk_bulk_disable_unprepare(ETHDR_CLK_NUM, priv->ethdr_clk); +} + +static int mtk_ethdr_bind(struct device *dev, struct device *master, + void *data) +{ + struct mtk_ethdr *priv = dev_get_drvdata(dev); + + priv->mmsys_dev = data; + return 0; +} + +static void mtk_ethdr_unbind(struct device *dev, struct device *master, void *data) +{ +} + +static const struct component_ops mtk_ethdr_component_ops = { + .bind = mtk_ethdr_bind, + .unbind = mtk_ethdr_unbind, +}; + +static int mtk_ethdr_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct mtk_ethdr *priv; + int ret; + int i; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + for (i = 0; i < ETHDR_ID_MAX; i++) { + priv->ethdr_comp[i].dev = dev; + priv->ethdr_comp[i].regs = of_iomap(dev->of_node, i); +#if IS_REACHABLE(CONFIG_MTK_CMDQ) + ret = cmdq_dev_get_client_reg(dev, + &priv->ethdr_comp[i].cmdq_base, i); + if (ret) + dev_dbg(dev, "get mediatek,gce-client-reg fail!\n"); +#endif + dev_dbg(dev, "[DRM]regs:0x%p, node:%d\n", priv->ethdr_comp[i].regs, i); + } + + for (i = 0; i < ETHDR_CLK_NUM; i++) + priv->ethdr_clk[i].id = ethdr_clk_str[i]; + ret = devm_clk_bulk_get_optional(dev, ETHDR_CLK_NUM, priv->ethdr_clk); + if (ret) + return ret; + + priv->irq = platform_get_irq(pdev, 0); + if (priv->irq < 0) + priv->irq = 0; + + if (priv->irq) { + ret = devm_request_irq(dev, priv->irq, mtk_ethdr_irq_handler, + IRQF_TRIGGER_NONE, dev_name(dev), priv); + if (ret < 0) { + dev_err(dev, "Failed to request irq %d: %d\n", priv->irq, ret); + return ret; + } + } + + priv->reset_ctl = devm_reset_control_array_get_optional_exclusive(dev); + if (IS_ERR(priv->reset_ctl)) { + dev_err_probe(dev, PTR_ERR(priv->reset_ctl), "cannot get ethdr reset control\n"); + return PTR_ERR(priv->reset_ctl); + } + + platform_set_drvdata(pdev, priv); + + ret = component_add(dev, &mtk_ethdr_component_ops); + if (ret) + dev_notice(dev, "Failed to add component: %d\n", ret); + + return ret; +} + +static int mtk_ethdr_remove(struct platform_device *pdev) +{ + component_del(&pdev->dev, &mtk_ethdr_component_ops); + return 0; +} + +static const struct of_device_id mtk_ethdr_driver_dt_match[] = { + { .compatible = "mediatek,mt8195-disp-ethdr"}, + {}, +}; + +MODULE_DEVICE_TABLE(of, mtk_ethdr_driver_dt_match); + +struct platform_driver mtk_ethdr_driver = { + .probe = mtk_ethdr_probe, + .remove = mtk_ethdr_remove, + .driver = { + .name = "mediatek-disp-ethdr", + .owner = THIS_MODULE, + .of_match_table = mtk_ethdr_driver_dt_match, + }, +}; |