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dw_hdmi-imx.c
products/Sources/formale Sprachen/C/Linux/drivers/gpu/drm/imx/ipuv3/dw_hdmi-imx.c
// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2011-2013 Freescale Semiconductor, Inc. * * derived from imx-hdmi.c(renamed to bridge/dw_hdmi.c now) */ #include
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#include "imx-drm.h" struct imx_hdmi; struct imx_hdmi_encoder { struct drm_encoder encoder; struct imx_hdmi *hdmi; }; struct imx_hdmi { struct device *dev; struct drm_bridge *bridge; struct dw_hdmi *hdmi; struct regmap *regmap; }; static inline struct imx_hdmi *enc_to_imx_hdmi(struct drm_encoder *e) { return container_of(e, struct imx_hdmi_encoder, encoder)->hdmi; } static const struct dw_hdmi_mpll_config imx_mpll_cfg[] = { { 45250000, { { 0x01e0, 0x0000 }, { 0x21e1, 0x0000 }, { 0x41e2, 0x0000 } }, }, { 92500000, { { 0x0140, 0x0005 }, { 0x2141, 0x0005 }, { 0x4142, 0x0005 }, }, }, { 148500000, { { 0x00a0, 0x000a }, { 0x20a1, 0x000a }, { 0x40a2, 0x000a }, }, }, { 216000000, { { 0x00a0, 0x000a }, { 0x2001, 0x000f }, { 0x4002, 0x000f }, }, }, { ~0UL, { { 0x0000, 0x0000 }, { 0x0000, 0x0000 }, { 0x0000, 0x0000 }, }, } }; static const struct dw_hdmi_curr_ctrl imx_cur_ctr[] = { /* pixelclk bpp8 bpp10 bpp12 */ { 54000000, { 0x091c, 0x091c, 0x06dc }, }, { 58400000, { 0x091c, 0x06dc, 0x06dc }, }, { 72000000, { 0x06dc, 0x06dc, 0x091c }, }, { 74250000, { 0x06dc, 0x0b5c, 0x091c }, }, { 118800000, { 0x091c, 0x091c, 0x06dc }, }, { 216000000, { 0x06dc, 0x0b5c, 0x091c }, }, { ~0UL, { 0x0000, 0x0000, 0x0000 }, }, }; /* * Resistance term 133Ohm Cfg * PREEMP config 0.00 * TX/CK level 10 */ static const struct dw_hdmi_phy_config imx_phy_config[] = { /*pixelclk symbol term vlev */ { 216000000, 0x800d, 0x0005, 0x01ad}, { ~0UL, 0x0000, 0x0000, 0x0000} }; static void dw_hdmi_imx_encoder_enable(struct drm_encoder *encoder) { struct imx_hdmi *hdmi = enc_to_imx_hdmi(encoder); int mux = drm_of_encoder_active_port_id(hdmi->dev->of_node, encoder); regmap_update_bits(hdmi->regmap, IOMUXC_GPR3, IMX6Q_GPR3_HDMI_MUX_CTL_MASK, mux << IMX6Q_GPR3_HDMI_MUX_CTL_SHIFT); } static int dw_hdmi_imx_atomic_check(struct drm_encoder *encoder, struct drm_crtc_state *crtc_state, struct drm_connector_state *conn_state) { struct imx_crtc_state *imx_crtc_state = to_imx_crtc_state(crtc_state); imx_crtc_state->bus_format = MEDIA_BUS_FMT_RGB888_1X24; imx_crtc_state->di_hsync_pin = 2; imx_crtc_state->di_vsync_pin = 3; return 0; } static const struct drm_encoder_helper_funcs dw_hdmi_imx_encoder_helper_funcs = { .enable = dw_hdmi_imx_encoder_enable, .atomic_check = dw_hdmi_imx_atomic_check, }; static enum drm_mode_status imx6q_hdmi_mode_valid(struct dw_hdmi *hdmi, void *data, const struct drm_display_info *info, const struct drm_display_mode *mode) { if (mode->clock < 13500) return MODE_CLOCK_LOW; /* FIXME: Hardware is capable of 266MHz, but setup data is missing. */ if (mode->clock > 216000) return MODE_CLOCK_HIGH; return MODE_OK; } static enum drm_mode_status imx6dl_hdmi_mode_valid(struct dw_hdmi *hdmi, void *data, const struct drm_display_info *info, const struct drm_display_mode *mode) { if (mode->clock < 13500) return MODE_CLOCK_LOW; /* FIXME: Hardware is capable of 270MHz, but setup data is missing. */ if (mode->clock > 216000) return MODE_CLOCK_HIGH; return MODE_OK; } static struct dw_hdmi_plat_data imx6q_hdmi_drv_data = { .mpll_cfg = imx_mpll_cfg, .cur_ctr = imx_cur_ctr, .phy_config = imx_phy_config, .mode_valid = imx6q_hdmi_mode_valid, }; static struct dw_hdmi_plat_data imx6dl_hdmi_drv_data = { .mpll_cfg = imx_mpll_cfg, .cur_ctr = imx_cur_ctr, .phy_config = imx_phy_config, .mode_valid = imx6dl_hdmi_mode_valid, }; static const struct of_device_id dw_hdmi_imx_dt_ids[] = { { .compatible = "fsl,imx6q-hdmi", .data = &imx6q_hdmi_drv_data }, { .compatible = "fsl,imx6dl-hdmi", .data = &imx6dl_hdmi_drv_data }, {}, }; MODULE_DEVICE_TABLE(of, dw_hdmi_imx_dt_ids); static int dw_hdmi_imx_bind(struct device *dev, struct device *master, void *data) { struct drm_device *drm = data; struct imx_hdmi_encoder *hdmi_encoder; struct drm_encoder *encoder; int ret; hdmi_encoder = drmm_simple_encoder_alloc(drm, struct imx_hdmi_encoder, encoder, DRM_MODE_ENCODER_TMDS); if (IS_ERR(hdmi_encoder)) return PTR_ERR(hdmi_encoder); hdmi_encoder->hdmi = dev_get_drvdata(dev); encoder = &hdmi_encoder->encoder; ret = imx_drm_encoder_parse_of(drm, encoder, dev->of_node); if (ret) return ret; drm_encoder_helper_add(encoder, &dw_hdmi_imx_encoder_helper_funcs); return drm_bridge_attach(encoder, hdmi_encoder->hdmi->bridge, NULL, 0); } static const struct component_ops dw_hdmi_imx_ops = { .bind = dw_hdmi_imx_bind, }; static int dw_hdmi_imx_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; const struct of_device_id *match = of_match_node(dw_hdmi_imx_dt_ids, np); struct imx_hdmi *hdmi; int ret; hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL); if (!hdmi) return -ENOMEM; platform_set_drvdata(pdev, hdmi); hdmi->dev = &pdev->dev; hdmi->regmap = syscon_regmap_lookup_by_phandle(np, "gpr"); if (IS_ERR(hdmi->regmap)) { dev_err(hdmi->dev, "Unable to get gpr\n"); return PTR_ERR(hdmi->regmap); } hdmi->hdmi = dw_hdmi_probe(pdev, match->data); if (IS_ERR(hdmi->hdmi)) return PTR_ERR(hdmi->hdmi); hdmi->bridge = of_drm_find_bridge(np); if (!hdmi->bridge) { dev_err(hdmi->dev, "Unable to find bridge\n"); dw_hdmi_remove(hdmi->hdmi); return -ENODEV; } ret = component_add(&pdev->dev, &dw_hdmi_imx_ops); if (ret) dw_hdmi_remove(hdmi->hdmi); return ret; } static void dw_hdmi_imx_remove(struct platform_device *pdev) { struct imx_hdmi *hdmi = platform_get_drvdata(pdev); component_del(&pdev->dev, &dw_hdmi_imx_ops); dw_hdmi_remove(hdmi->hdmi); } static struct platform_driver dw_hdmi_imx_platform_driver = { .probe = dw_hdmi_imx_probe, .remove = dw_hdmi_imx_remove, .driver = { .name = "dwhdmi-imx", .of_match_table = dw_hdmi_imx_dt_ids, }, }; module_platform_driver(dw_hdmi_imx_platform_driver); MODULE_AUTHOR("Andy Yan
"); MODULE_AUTHOR("Yakir Yang
"); MODULE_DESCRIPTION("IMX6 Specific DW-HDMI Driver Extension"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:dwhdmi-imx");
2026-06-09
