@@ -8,6 +8,7 @@ config DRM_ROCKCHIP
select VIDEOMODE_HELPERS
select DRM_ANALOGIX_DP if ROCKCHIP_ANALOGIX_DP
select DRM_DW_HDMI if ROCKCHIP_DW_HDMI
+ select DRM_DW_HDMI_QP if ROCKCHIP_DW_HDMI_QP
select DRM_DW_MIPI_DSI if ROCKCHIP_DW_MIPI_DSI
select GENERIC_PHY if ROCKCHIP_DW_MIPI_DSI
select GENERIC_PHY_MIPI_DPHY if ROCKCHIP_DW_MIPI_DSI
@@ -63,6 +64,14 @@ config ROCKCHIP_DW_HDMI
enable HDMI on RK3288 or RK3399 based SoC, you should select
this option.
+config ROCKCHIP_DW_HDMI_QP
+ bool "Rockchip specific extensions for Synopsys DW HDMI QP"
+ select DRM_BRIDGE_CONNECTOR
+ help
+ This selects support for Rockchip SoC specific extensions
+ for the Synopsys DesignWare HDMI QP driver. If you want to
+ enable HDMI on RK3588 based SoC, you should select this option.
+
config ROCKCHIP_DW_MIPI_DSI
bool "Rockchip specific extensions for Synopsys DW MIPI DSI"
select GENERIC_PHY_MIPI_DPHY
@@ -11,6 +11,7 @@ rockchipdrm-$(CONFIG_ROCKCHIP_VOP) += rockchip_drm_vop.o rockchip_vop_reg.o
rockchipdrm-$(CONFIG_ROCKCHIP_ANALOGIX_DP) += analogix_dp-rockchip.o
rockchipdrm-$(CONFIG_ROCKCHIP_CDN_DP) += cdn-dp-core.o cdn-dp-reg.o
rockchipdrm-$(CONFIG_ROCKCHIP_DW_HDMI) += dw_hdmi-rockchip.o
+rockchipdrm-$(CONFIG_ROCKCHIP_DW_HDMI_QP) += dw_hdmi_qp-rockchip.o
rockchipdrm-$(CONFIG_ROCKCHIP_DW_MIPI_DSI) += dw-mipi-dsi-rockchip.o
rockchipdrm-$(CONFIG_ROCKCHIP_INNO_HDMI) += inno_hdmi.o
rockchipdrm-$(CONFIG_ROCKCHIP_LVDS) += rockchip_lvds.o
new file mode 100644
@@ -0,0 +1,424 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2021-2022 Rockchip Electronics Co., Ltd.
+ * Copyright (c) 2024 Collabora Ltd.
+ *
+ * Author: Algea Cao <algea.cao@rock-chips.com>
+ * Author: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
+ */
+
+#include <linux/clk.h>
+#include <linux/gpio/consumer.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/phy/phy.h>
+#include <linux/regmap.h>
+#include <linux/workqueue.h>
+
+#include <drm/bridge/dw_hdmi_qp.h>
+#include <drm/display/drm_hdmi_helper.h>
+#include <drm/drm_bridge_connector.h>
+#include <drm/drm_of.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>
+
+#include "rockchip_drm_drv.h"
+
+#define RK3588_GRF_SOC_CON2 0x0308
+#define RK3588_HDMI0_HPD_INT_MSK BIT(13)
+#define RK3588_HDMI0_HPD_INT_CLR BIT(12)
+#define RK3588_GRF_SOC_CON7 0x031c
+#define RK3588_SET_HPD_PATH_MASK GENMASK(13, 12)
+#define RK3588_GRF_SOC_STATUS1 0x0384
+#define RK3588_HDMI0_LEVEL_INT BIT(16)
+#define RK3588_GRF_VO1_CON3 0x000c
+#define RK3588_SCLIN_MASK BIT(9)
+#define RK3588_SDAIN_MASK BIT(10)
+#define RK3588_MODE_MASK BIT(11)
+#define RK3588_I2S_SEL_MASK BIT(13)
+#define RK3588_GRF_VO1_CON9 0x0024
+#define RK3588_HDMI0_GRANT_SEL BIT(10)
+
+#define HIWORD_UPDATE(val, mask) ((val) | (mask) << 16)
+#define HOTPLUG_DEBOUNCE_MS 150
+
+struct rockchip_hdmi_qp {
+ struct device *dev;
+ struct regmap *regmap;
+ struct regmap *vo_regmap;
+ struct rockchip_encoder encoder;
+ struct clk *ref_clk;
+ struct dw_hdmi_qp *hdmi;
+ struct phy *phy;
+ struct gpio_desc *enable_gpio;
+ struct delayed_work hpd_work;
+};
+
+static struct rockchip_hdmi_qp *to_rockchip_hdmi_qp(struct drm_encoder *encoder)
+{
+ struct rockchip_encoder *rkencoder = to_rockchip_encoder(encoder);
+
+ return container_of(rkencoder, struct rockchip_hdmi_qp, encoder);
+}
+
+static void dw_hdmi_qp_rockchip_encoder_enable(struct drm_encoder *encoder)
+{
+ struct rockchip_hdmi_qp *hdmi = to_rockchip_hdmi_qp(encoder);
+ struct drm_crtc *crtc = encoder->crtc;
+ unsigned long long rate;
+
+ /* Unconditionally switch to TMDS as FRL is not yet supported */
+ gpiod_set_value(hdmi->enable_gpio, 1);
+
+ if (crtc && crtc->state) {
+ rate = drm_hdmi_compute_mode_clock(&crtc->state->adjusted_mode,
+ 8, HDMI_COLORSPACE_RGB);
+ clk_set_rate(hdmi->ref_clk, rate);
+ /*
+ * FIXME: Temporary workaround to pass pixel clock rate
+ * to the PHY driver until phy_configure_opts_hdmi
+ * becomes available in the PHY API. See also the related
+ * comment in rk_hdptx_phy_power_on() from
+ * drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c
+ */
+ phy_set_bus_width(hdmi->phy, rate / 100);
+ }
+}
+
+static int
+dw_hdmi_qp_rockchip_encoder_atomic_check(struct drm_encoder *encoder,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state)
+{
+ struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);
+
+ s->output_mode = ROCKCHIP_OUT_MODE_AAAA;
+ s->output_type = DRM_MODE_CONNECTOR_HDMIA;
+
+ return 0;
+}
+
+static const struct
+drm_encoder_helper_funcs dw_hdmi_qp_rockchip_encoder_helper_funcs = {
+ .enable = dw_hdmi_qp_rockchip_encoder_enable,
+ .atomic_check = dw_hdmi_qp_rockchip_encoder_atomic_check,
+};
+
+static int dw_hdmi_qp_rk3588_phy_init(struct dw_hdmi_qp *dw_hdmi, void *data)
+{
+ struct rockchip_hdmi_qp *hdmi = (struct rockchip_hdmi_qp *)data;
+
+ return phy_power_on(hdmi->phy);
+}
+
+static void dw_hdmi_qp_rk3588_phy_disable(struct dw_hdmi_qp *dw_hdmi,
+ void *data)
+{
+ struct rockchip_hdmi_qp *hdmi = (struct rockchip_hdmi_qp *)data;
+
+ phy_power_off(hdmi->phy);
+}
+
+static enum drm_connector_status
+dw_hdmi_qp_rk3588_read_hpd(struct dw_hdmi_qp *dw_hdmi, void *data)
+{
+ struct rockchip_hdmi_qp *hdmi = (struct rockchip_hdmi_qp *)data;
+ u32 val;
+
+ regmap_read(hdmi->regmap, RK3588_GRF_SOC_STATUS1, &val);
+
+ return val & RK3588_HDMI0_LEVEL_INT ?
+ connector_status_connected : connector_status_disconnected;
+}
+
+static void dw_hdmi_qp_rk3588_setup_hpd(struct dw_hdmi_qp *dw_hdmi, void *data)
+{
+ struct rockchip_hdmi_qp *hdmi = (struct rockchip_hdmi_qp *)data;
+
+ regmap_write(hdmi->regmap,
+ RK3588_GRF_SOC_CON2,
+ HIWORD_UPDATE(RK3588_HDMI0_HPD_INT_CLR,
+ RK3588_HDMI0_HPD_INT_CLR |
+ RK3588_HDMI0_HPD_INT_MSK));
+}
+
+static const struct dw_hdmi_qp_phy_ops rk3588_hdmi_phy_ops = {
+ .init = dw_hdmi_qp_rk3588_phy_init,
+ .disable = dw_hdmi_qp_rk3588_phy_disable,
+ .read_hpd = dw_hdmi_qp_rk3588_read_hpd,
+ .setup_hpd = dw_hdmi_qp_rk3588_setup_hpd,
+};
+
+static void dw_hdmi_qp_rk3588_hpd_work(struct work_struct *work)
+{
+ struct rockchip_hdmi_qp *hdmi = container_of(work,
+ struct rockchip_hdmi_qp,
+ hpd_work.work);
+ struct drm_device *drm = hdmi->encoder.encoder.dev;
+ bool changed;
+
+ if (drm) {
+ changed = drm_helper_hpd_irq_event(drm);
+ if (changed)
+ drm_dbg(hdmi, "connector status changed\n");
+ }
+}
+
+static irqreturn_t dw_hdmi_qp_rk3588_hardirq(int irq, void *dev_id)
+{
+ struct rockchip_hdmi_qp *hdmi = dev_id;
+ u32 intr_stat, val;
+
+ regmap_read(hdmi->regmap, RK3588_GRF_SOC_STATUS1, &intr_stat);
+
+ if (intr_stat) {
+ val = HIWORD_UPDATE(RK3588_HDMI0_HPD_INT_MSK,
+ RK3588_HDMI0_HPD_INT_MSK);
+ regmap_write(hdmi->regmap, RK3588_GRF_SOC_CON2, val);
+ return IRQ_WAKE_THREAD;
+ }
+
+ return IRQ_NONE;
+}
+
+static irqreturn_t dw_hdmi_qp_rk3588_irq(int irq, void *dev_id)
+{
+ struct rockchip_hdmi_qp *hdmi = dev_id;
+ u32 intr_stat, val;
+
+ regmap_read(hdmi->regmap, RK3588_GRF_SOC_STATUS1, &intr_stat);
+ if (!intr_stat)
+ return IRQ_NONE;
+
+ val = HIWORD_UPDATE(RK3588_HDMI0_HPD_INT_CLR,
+ RK3588_HDMI0_HPD_INT_CLR);
+ regmap_write(hdmi->regmap, RK3588_GRF_SOC_CON2, val);
+
+ mod_delayed_work(system_wq, &hdmi->hpd_work,
+ msecs_to_jiffies(HOTPLUG_DEBOUNCE_MS));
+
+ val |= HIWORD_UPDATE(0, RK3588_HDMI0_HPD_INT_MSK);
+ regmap_write(hdmi->regmap, RK3588_GRF_SOC_CON2, val);
+
+ return IRQ_HANDLED;
+}
+
+static const struct of_device_id dw_hdmi_qp_rockchip_dt_ids[] = {
+ { .compatible = "rockchip,rk3588-dw-hdmi-qp",
+ .data = &rk3588_hdmi_phy_ops },
+ {},
+};
+MODULE_DEVICE_TABLE(of, dw_hdmi_qp_rockchip_dt_ids);
+
+static int dw_hdmi_qp_rockchip_bind(struct device *dev, struct device *master,
+ void *data)
+{
+ static const char * const clk_names[] = {
+ "pclk", "earc", "aud", "hdp", "hclk_vo1",
+ "ref" /* keep "ref" last */
+ };
+ struct platform_device *pdev = to_platform_device(dev);
+ struct dw_hdmi_qp_plat_data plat_data;
+ struct drm_device *drm = data;
+ struct drm_connector *connector;
+ struct drm_encoder *encoder;
+ struct rockchip_hdmi_qp *hdmi;
+ struct clk *clk;
+ int ret, irq, i;
+ u32 val;
+
+ if (!pdev->dev.of_node)
+ return -ENODEV;
+
+ hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
+ if (!hdmi)
+ return -ENOMEM;
+
+ plat_data.phy_ops = of_device_get_match_data(dev);
+ if (!plat_data.phy_ops)
+ return -ENODEV;
+
+ plat_data.phy_data = hdmi;
+ hdmi->dev = &pdev->dev;
+
+ encoder = &hdmi->encoder.encoder;
+ encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
+
+ rockchip_drm_encoder_set_crtc_endpoint_id(&hdmi->encoder,
+ dev->of_node, 0, 0);
+ /*
+ * If we failed to find the CRTC(s) which this encoder is
+ * supposed to be connected to, it's because the CRTC has
+ * not been registered yet. Defer probing, and hope that
+ * the required CRTC is added later.
+ */
+ if (encoder->possible_crtcs == 0)
+ return -EPROBE_DEFER;
+
+ hdmi->regmap = syscon_regmap_lookup_by_phandle(dev->of_node,
+ "rockchip,grf");
+ if (IS_ERR(hdmi->regmap)) {
+ drm_err(hdmi, "Unable to get rockchip,grf\n");
+ return PTR_ERR(hdmi->regmap);
+ }
+
+ hdmi->vo_regmap = syscon_regmap_lookup_by_phandle(dev->of_node,
+ "rockchip,vo-grf");
+ if (IS_ERR(hdmi->vo_regmap)) {
+ drm_err(hdmi, "Unable to get rockchip,vo-grf\n");
+ return PTR_ERR(hdmi->vo_regmap);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(clk_names); i++) {
+ clk = devm_clk_get_enabled(hdmi->dev, clk_names[i]);
+
+ if (IS_ERR(clk)) {
+ ret = PTR_ERR(clk);
+ if (ret != -EPROBE_DEFER)
+ drm_err(hdmi, "Failed to get %s clock: %d\n",
+ clk_names[i], ret);
+ return ret;
+ }
+ }
+ hdmi->ref_clk = clk;
+
+ hdmi->enable_gpio = devm_gpiod_get_optional(hdmi->dev, "enable",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(hdmi->enable_gpio)) {
+ ret = PTR_ERR(hdmi->enable_gpio);
+ drm_err(hdmi, "Failed to request enable GPIO: %d\n", ret);
+ return ret;
+ }
+
+ hdmi->phy = devm_of_phy_get_by_index(dev, dev->of_node, 0);
+ if (IS_ERR(hdmi->phy)) {
+ ret = PTR_ERR(hdmi->phy);
+ if (ret != -EPROBE_DEFER)
+ drm_err(hdmi, "failed to get phy: %d\n", ret);
+ return ret;
+ }
+
+ val = HIWORD_UPDATE(RK3588_SCLIN_MASK, RK3588_SCLIN_MASK) |
+ HIWORD_UPDATE(RK3588_SDAIN_MASK, RK3588_SDAIN_MASK) |
+ HIWORD_UPDATE(RK3588_MODE_MASK, RK3588_MODE_MASK) |
+ HIWORD_UPDATE(RK3588_I2S_SEL_MASK, RK3588_I2S_SEL_MASK);
+ regmap_write(hdmi->vo_regmap, RK3588_GRF_VO1_CON3, val);
+
+ val = HIWORD_UPDATE(RK3588_SET_HPD_PATH_MASK,
+ RK3588_SET_HPD_PATH_MASK);
+ regmap_write(hdmi->regmap, RK3588_GRF_SOC_CON7, val);
+
+ val = HIWORD_UPDATE(RK3588_HDMI0_GRANT_SEL,
+ RK3588_HDMI0_GRANT_SEL);
+ regmap_write(hdmi->vo_regmap, RK3588_GRF_VO1_CON9, val);
+
+ val = HIWORD_UPDATE(RK3588_HDMI0_HPD_INT_MSK, RK3588_HDMI0_HPD_INT_MSK);
+ regmap_write(hdmi->regmap, RK3588_GRF_SOC_CON2, val);
+
+ INIT_DELAYED_WORK(&hdmi->hpd_work, dw_hdmi_qp_rk3588_hpd_work);
+
+ plat_data.main_irq = platform_get_irq_byname(pdev, "main");
+ if (plat_data.main_irq < 0)
+ return plat_data.main_irq;
+
+ irq = platform_get_irq_byname(pdev, "hpd");
+ if (irq < 0)
+ return irq;
+
+ ret = devm_request_threaded_irq(hdmi->dev, irq,
+ dw_hdmi_qp_rk3588_hardirq,
+ dw_hdmi_qp_rk3588_irq,
+ IRQF_SHARED, "dw-hdmi-qp-hpd",
+ hdmi);
+ if (ret)
+ return ret;
+
+ drm_encoder_helper_add(encoder, &dw_hdmi_qp_rockchip_encoder_helper_funcs);
+ drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS);
+
+ platform_set_drvdata(pdev, hdmi);
+
+ hdmi->hdmi = dw_hdmi_qp_bind(pdev, encoder, &plat_data);
+ if (IS_ERR(hdmi->hdmi)) {
+ ret = PTR_ERR(hdmi->hdmi);
+ drm_encoder_cleanup(encoder);
+ return ret;
+ }
+
+ connector = drm_bridge_connector_init(drm, encoder);
+ if (IS_ERR(connector)) {
+ ret = PTR_ERR(connector);
+ drm_err(hdmi, "failed to init bridge connector: %d\n", ret);
+ return ret;
+ }
+
+ return drm_connector_attach_encoder(connector, encoder);
+}
+
+static void dw_hdmi_qp_rockchip_unbind(struct device *dev,
+ struct device *master,
+ void *data)
+{
+ struct rockchip_hdmi_qp *hdmi = dev_get_drvdata(dev);
+
+ cancel_delayed_work_sync(&hdmi->hpd_work);
+
+ drm_encoder_cleanup(&hdmi->encoder.encoder);
+}
+
+static const struct component_ops dw_hdmi_qp_rockchip_ops = {
+ .bind = dw_hdmi_qp_rockchip_bind,
+ .unbind = dw_hdmi_qp_rockchip_unbind,
+};
+
+static int dw_hdmi_qp_rockchip_probe(struct platform_device *pdev)
+{
+ return component_add(&pdev->dev, &dw_hdmi_qp_rockchip_ops);
+}
+
+static void dw_hdmi_qp_rockchip_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &dw_hdmi_qp_rockchip_ops);
+}
+
+static int __maybe_unused dw_hdmi_qp_rockchip_resume(struct device *dev)
+{
+ struct rockchip_hdmi_qp *hdmi = dev_get_drvdata(dev);
+ u32 val;
+
+ val = HIWORD_UPDATE(RK3588_SCLIN_MASK, RK3588_SCLIN_MASK) |
+ HIWORD_UPDATE(RK3588_SDAIN_MASK, RK3588_SDAIN_MASK) |
+ HIWORD_UPDATE(RK3588_MODE_MASK, RK3588_MODE_MASK) |
+ HIWORD_UPDATE(RK3588_I2S_SEL_MASK, RK3588_I2S_SEL_MASK);
+ regmap_write(hdmi->vo_regmap, RK3588_GRF_VO1_CON3, val);
+
+ val = HIWORD_UPDATE(RK3588_SET_HPD_PATH_MASK,
+ RK3588_SET_HPD_PATH_MASK);
+ regmap_write(hdmi->regmap, RK3588_GRF_SOC_CON7, val);
+
+ val = HIWORD_UPDATE(RK3588_HDMI0_GRANT_SEL,
+ RK3588_HDMI0_GRANT_SEL);
+ regmap_write(hdmi->vo_regmap, RK3588_GRF_VO1_CON9, val);
+
+ dw_hdmi_qp_resume(dev, hdmi->hdmi);
+
+ if (hdmi->encoder.encoder.dev)
+ drm_helper_hpd_irq_event(hdmi->encoder.encoder.dev);
+
+ return 0;
+}
+
+static const struct dev_pm_ops dw_hdmi_qp_rockchip_pm = {
+ SET_SYSTEM_SLEEP_PM_OPS(NULL, dw_hdmi_qp_rockchip_resume)
+};
+
+struct platform_driver dw_hdmi_qp_rockchip_pltfm_driver = {
+ .probe = dw_hdmi_qp_rockchip_probe,
+ .remove_new = dw_hdmi_qp_rockchip_remove,
+ .driver = {
+ .name = "dwhdmiqp-rockchip",
+ .pm = &dw_hdmi_qp_rockchip_pm,
+ .of_match_table = dw_hdmi_qp_rockchip_dt_ids,
+ },
+};
@@ -507,6 +507,8 @@ static int __init rockchip_drm_init(void)
ADD_ROCKCHIP_SUB_DRIVER(cdn_dp_driver, CONFIG_ROCKCHIP_CDN_DP);
ADD_ROCKCHIP_SUB_DRIVER(dw_hdmi_rockchip_pltfm_driver,
CONFIG_ROCKCHIP_DW_HDMI);
+ ADD_ROCKCHIP_SUB_DRIVER(dw_hdmi_qp_rockchip_pltfm_driver,
+ CONFIG_ROCKCHIP_DW_HDMI_QP);
ADD_ROCKCHIP_SUB_DRIVER(dw_mipi_dsi_rockchip_driver,
CONFIG_ROCKCHIP_DW_MIPI_DSI);
ADD_ROCKCHIP_SUB_DRIVER(inno_hdmi_driver, CONFIG_ROCKCHIP_INNO_HDMI);
@@ -88,6 +88,7 @@ int rockchip_drm_encoder_set_crtc_endpoint_id(struct rockchip_encoder *rencoder,
int rockchip_drm_endpoint_is_subdriver(struct device_node *ep);
extern struct platform_driver cdn_dp_driver;
extern struct platform_driver dw_hdmi_rockchip_pltfm_driver;
+extern struct platform_driver dw_hdmi_qp_rockchip_pltfm_driver;
extern struct platform_driver dw_mipi_dsi_rockchip_driver;
extern struct platform_driver inno_hdmi_driver;
extern struct platform_driver rockchip_dp_driver;