From patchwork Mon Jun 1 06:17:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sandor Yu X-Patchwork-Id: 11581399 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5306F139A for ; Mon, 1 Jun 2020 06:24:18 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F3F4E20734 for ; Mon, 1 Jun 2020 06:24:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="cB1Yce1I" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F3F4E20734 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=J3WBPLv6HL1x9f4eoeJ5xQpggD9rZFMkdrAyKJzMon8=; b=cB1Yce1IZg9bEtYdC8mgYDOj0o QUkDKvkfYXgfL+9aBpdyirwwyRn1IO67eeXjJWS71Wtqckk0BUwpHJqgsgeMPmFjfOl9djp923CLW xKzWs3lTflABFahjpBPeG1OwhinQmLxBCJgmeTQcFT7+Tp9IY3swI/XRFrW7pvbjkuwKZUKhfisO6 Vhs19wcesL7yjW3tRrPnNX9pkwMJf6zC8/0Mrr9LdADxgLbEDzPqZv00ZQxm000komJb63kN9bOlI rTMZ/Zzqrd3lVtVlpoQO6Yq6pPU7lapYgO/NGUmdtoYugdNGSxKX+EkYvKBMkaQNgKFM770IkRojE 8MvQQsVA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jfdrk-0007wq-VD; Mon, 01 Jun 2020 06:24:08 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jfdr0-0007OV-2O; Mon, 01 Jun 2020 06:23:29 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id C1D682004B9; Mon, 1 Jun 2020 08:23:20 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id C655920047B; Mon, 1 Jun 2020 08:23:14 +0200 (CEST) Received: from localhost.localdomain (mega.ap.freescale.net [10.192.208.232]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 990EE402B1; Mon, 1 Jun 2020 14:23:07 +0800 (SGT) From: sandor.yu@nxp.com To: a.hajda@samsung.com, narmstrong@baylibre.com, Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se, jernej.skrabec@siol.net, heiko@sntech.de, hjc@rock-chips.com, Sandor.yu@nxp.com, dkos@cadence.com, dri-devel@lists.freedesktop.org Subject: [PATCH 3/7] drm: bridge: cadence: initial support for MHDP DP bridge driver Date: Mon, 1 Jun 2020 14:17:33 +0800 Message-Id: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200531_232322_534499_A7CF2CD7 X-CRM114-Status: GOOD ( 17.32 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [92.121.34.21 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Sandor Yu This adds initial support for MHDP DP bridge driver. Basic DP functions are supported, that include: -Video mode set on-the-fly -Cable hotplug detect -MAX support resolution to 3096x2160@60fps -Support DP audio -EDID read via AUX Signed-off-by: Sandor Yu --- drivers/gpu/drm/bridge/cadence/Kconfig | 4 + drivers/gpu/drm/bridge/cadence/Makefile | 1 + drivers/gpu/drm/bridge/cadence/cdns-dp-core.c | 530 ++++++++++++++++++ .../gpu/drm/bridge/cadence/cdns-mhdp-audio.c | 100 ++++ .../gpu/drm/bridge/cadence/cdns-mhdp-common.c | 42 +- .../gpu/drm/bridge/cadence/cdns-mhdp-common.h | 3 + drivers/gpu/drm/bridge/cadence/cdns-mhdp-dp.c | 34 +- drivers/gpu/drm/rockchip/cdn-dp-core.c | 7 +- include/drm/bridge/cdns-mhdp.h | 52 +- 9 files changed, 740 insertions(+), 33 deletions(-) create mode 100644 drivers/gpu/drm/bridge/cadence/cdns-dp-core.c diff --git a/drivers/gpu/drm/bridge/cadence/Kconfig b/drivers/gpu/drm/bridge/cadence/Kconfig index 48c1b0f77dc6..b7b8d30b18b6 100644 --- a/drivers/gpu/drm/bridge/cadence/Kconfig +++ b/drivers/gpu/drm/bridge/cadence/Kconfig @@ -5,3 +5,7 @@ config DRM_CDNS_MHDP depends on OF help Support Cadence MHDP API library. + +config DRM_CDNS_DP + tristate "Cadence DP DRM driver" + depends on DRM_CDNS_MHDP diff --git a/drivers/gpu/drm/bridge/cadence/Makefile b/drivers/gpu/drm/bridge/cadence/Makefile index ddb2ba4fb852..cb3c88311a64 100644 --- a/drivers/gpu/drm/bridge/cadence/Makefile +++ b/drivers/gpu/drm/bridge/cadence/Makefile @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only cdns_mhdp_drmcore-y := cdns-mhdp-common.o cdns-mhdp-audio.o cdns-mhdp-dp.o +cdns_mhdp_drmcore-$(CONFIG_DRM_CDNS_DP) += cdns-dp-core.o obj-$(CONFIG_DRM_CDNS_MHDP) += cdns_mhdp_drmcore.o diff --git a/drivers/gpu/drm/bridge/cadence/cdns-dp-core.c b/drivers/gpu/drm/bridge/cadence/cdns-dp-core.c new file mode 100644 index 000000000000..b2fe8fdc64ed --- /dev/null +++ b/drivers/gpu/drm/bridge/cadence/cdns-dp-core.c @@ -0,0 +1,530 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Cadence Display Port Interface (DP) driver + * + * Copyright (C) 2019-2020 NXP Semiconductor, Inc. + * + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "cdns-mhdp-common.h" + +/* + * This function only implements native DPDC reads and writes + */ +static ssize_t dp_aux_transfer(struct drm_dp_aux *aux, + struct drm_dp_aux_msg *msg) +{ + struct cdns_mhdp_device *mhdp = dev_get_drvdata(aux->dev); + bool native = msg->request & (DP_AUX_NATIVE_WRITE & DP_AUX_NATIVE_READ); + int ret; + + /* Ignore address only message */ + if ((msg->size == 0) || (msg->buffer == NULL)) { + msg->reply = native ? + DP_AUX_NATIVE_REPLY_ACK : DP_AUX_I2C_REPLY_ACK; + return msg->size; + } + + if (!native) { + dev_err(mhdp->dev, "%s: only native messages supported\n", __func__); + return -EINVAL; + } + + /* msg sanity check */ + if (msg->size > DP_AUX_MAX_PAYLOAD_BYTES) { + dev_err(mhdp->dev, "%s: invalid msg: size(%zu), request(%x)\n", + __func__, msg->size, (unsigned int)msg->request); + return -EINVAL; + } + + if (msg->request == DP_AUX_NATIVE_WRITE) { + const u8 *buf = msg->buffer; + int i; + for (i = 0; i < msg->size; ++i) { + ret = cdns_mhdp_dpcd_write(mhdp, + msg->address + i, buf[i]); + if (!ret) + continue; + + DRM_DEV_ERROR(mhdp->dev, "Failed to write DPCD\n"); + + return ret; + } + msg->reply = DP_AUX_NATIVE_REPLY_ACK; + return msg->size; + } + + if (msg->request == DP_AUX_NATIVE_READ) { + ret = cdns_mhdp_dpcd_read(mhdp, msg->address, msg->buffer, msg->size); + if (ret < 0) + return -EIO; + msg->reply = DP_AUX_NATIVE_REPLY_ACK; + return msg->size; + } + return 0; +} + +static int dp_aux_init(struct cdns_mhdp_device *mhdp, + struct device *dev) +{ + int ret; + + mhdp->dp.aux.name = "imx_dp_aux"; + mhdp->dp.aux.dev = dev; + mhdp->dp.aux.transfer = dp_aux_transfer; + + ret = drm_dp_aux_register(&mhdp->dp.aux); + + return ret; +} + +static int dp_aux_destroy(struct cdns_mhdp_device *mhdp) +{ + drm_dp_aux_unregister(&mhdp->dp.aux); + return 0; +} + +static void dp_pixel_clk_reset(struct cdns_mhdp_device *mhdp) +{ + u32 val; + + /* reset pixel clk */ + val = cdns_mhdp_reg_read(mhdp, SOURCE_HDTX_CAR); + cdns_mhdp_reg_write(mhdp, SOURCE_HDTX_CAR, val & 0xFD); + cdns_mhdp_reg_write(mhdp, SOURCE_HDTX_CAR, val); +} + +static void cdns_dp_mode_set(struct cdns_mhdp_device *mhdp) +{ + int ret; + + cdns_mhdp_plat_call(mhdp, pclk_rate); + + /* delay for DP FW stable after pixel clock relock */ + msleep(50); + + dp_pixel_clk_reset(mhdp); + + /* Get DP Caps */ + ret = drm_dp_dpcd_read(&mhdp->dp.aux, DP_DPCD_REV, mhdp->dp.dpcd, + DP_RECEIVER_CAP_SIZE); + if (ret < 0) { + DRM_ERROR("Failed to get caps %d\n", ret); + return; + } + + mhdp->dp.rate = drm_dp_max_link_rate(mhdp->dp.dpcd); + mhdp->dp.num_lanes = drm_dp_max_lane_count(mhdp->dp.dpcd); + + /* check the max link rate */ + if (mhdp->dp.rate > CDNS_DP_MAX_LINK_RATE) + mhdp->dp.rate = CDNS_DP_MAX_LINK_RATE; + + /* Initialize link rate/num_lanes as panel max link rate/max_num_lanes */ + cdns_mhdp_plat_call(mhdp, phy_set); + + /* Video off */ + ret = cdns_mhdp_set_video_status(mhdp, CONTROL_VIDEO_IDLE); + if (ret) { + DRM_DEV_ERROR(mhdp->dev, "Failed to valid video %d\n", ret); + return; + } + + /* Line swaping */ + mhdp->lane_mapping = mhdp->plat_data->lane_mapping; + cdns_mhdp_reg_write(mhdp, LANES_CONFIG, 0x00400000 | mhdp->lane_mapping); + + /* Set DP host capability */ + ret = cdns_mhdp_set_host_cap(mhdp); + if (ret) { + DRM_DEV_ERROR(mhdp->dev, "Failed to set host cap %d\n", ret); + return; + } + + ret = cdns_mhdp_config_video(mhdp); + if (ret) { + DRM_DEV_ERROR(mhdp->dev, "Failed to config video %d\n", ret); + return; + } + + return; +} + +/* ----------------------------------------------------------------------------- + * DP TX Setup + */ +static enum drm_connector_status +cdns_dp_connector_detect(struct drm_connector *connector, bool force) +{ + struct cdns_mhdp_device *mhdp = container_of(connector, + struct cdns_mhdp_device, connector.base); + u8 hpd = 0xf; + + hpd = cdns_mhdp_read_hpd(mhdp); + if (hpd == 1) + /* Cable Connected */ + return connector_status_connected; + else if (hpd == 0) + /* Cable Disconnedted */ + return connector_status_disconnected; + else { + /* Cable status unknown */ + DRM_INFO("Unknow cable status, hdp=%u\n", hpd); + return connector_status_unknown; + } +} + +static int cdns_dp_connector_get_modes(struct drm_connector *connector) +{ + struct cdns_mhdp_device *mhdp = container_of(connector, + struct cdns_mhdp_device, connector.base); + int num_modes = 0; + struct edid *edid; + + edid = drm_do_get_edid(&mhdp->connector.base, + cdns_mhdp_get_edid_block, mhdp); + if (edid) { + dev_info(mhdp->dev, "%x,%x,%x,%x,%x,%x,%x,%x\n", + edid->header[0], edid->header[1], + edid->header[2], edid->header[3], + edid->header[4], edid->header[5], + edid->header[6], edid->header[7]); + drm_connector_update_edid_property(connector, edid); + num_modes = drm_add_edid_modes(connector, edid); + kfree(edid); + } + + if (num_modes == 0) + DRM_ERROR("Invalid edid\n"); + return num_modes; +} + +static const struct drm_connector_funcs cdns_dp_connector_funcs = { + .fill_modes = drm_helper_probe_single_connector_modes, + .detect = cdns_dp_connector_detect, + .destroy = drm_connector_cleanup, + .reset = drm_atomic_helper_connector_reset, + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, +}; + +static const struct drm_connector_helper_funcs cdns_dp_connector_helper_funcs = { + .get_modes = cdns_dp_connector_get_modes, +}; + +static int cdns_dp_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) +{ + struct cdns_mhdp_device *mhdp = bridge->driver_private; + struct drm_encoder *encoder = bridge->encoder; + struct drm_connector *connector = &mhdp->connector.base; + + connector->interlace_allowed = 1; + + connector->polled = DRM_CONNECTOR_POLL_HPD; + + drm_connector_helper_add(connector, &cdns_dp_connector_helper_funcs); + + drm_connector_init(bridge->dev, connector, &cdns_dp_connector_funcs, + DRM_MODE_CONNECTOR_DisplayPort); + + drm_connector_attach_encoder(connector, encoder); + + return 0; +} + +static enum drm_mode_status +cdns_dp_bridge_mode_valid(struct drm_bridge *bridge, + const struct drm_display_mode *mode) +{ + enum drm_mode_status mode_status = MODE_OK; + + /* We don't support double-clocked modes */ + if (mode->flags & DRM_MODE_FLAG_DBLCLK || + mode->flags & DRM_MODE_FLAG_INTERLACE) + return MODE_BAD; + + /* MAX support pixel clock rate 594MHz */ + if (mode->clock > 594000) + return MODE_CLOCK_HIGH; + + /* 4096x2160 is not supported */ + if (mode->hdisplay > 3840) + return MODE_BAD_HVALUE; + + if (mode->vdisplay > 2160) + return MODE_BAD_VVALUE; + + return mode_status; +} + +static void cdns_dp_bridge_mode_set(struct drm_bridge *bridge, + const struct drm_display_mode *orig_mode, + const struct drm_display_mode *mode) +{ + struct cdns_mhdp_device *mhdp = bridge->driver_private; + struct drm_display_info *display_info = &mhdp->connector.base.display_info; + struct video_info *video = &mhdp->video_info; + + switch (display_info->bpc) { + case 10: + video->color_depth = 10; + break; + case 6: + video->color_depth = 6; + break; + default: + video->color_depth = 8; + break; + } + + video->color_fmt = PXL_RGB; + video->v_sync_polarity = !!(mode->flags & DRM_MODE_FLAG_NVSYNC); + video->h_sync_polarity = !!(mode->flags & DRM_MODE_FLAG_NHSYNC); + + DRM_INFO("Mode: %dx%dp%d\n", mode->hdisplay, mode->vdisplay, mode->clock); + memcpy(&mhdp->mode, mode, sizeof(struct drm_display_mode)); + + mutex_lock(&mhdp->lock); + cdns_dp_mode_set(mhdp); + mutex_unlock(&mhdp->lock); +} + +static void cdn_dp_bridge_enable(struct drm_bridge *bridge) +{ + struct cdns_mhdp_device *mhdp = bridge->driver_private; + int ret; + + /* Link trainning */ + ret = cdns_mhdp_train_link(mhdp); + if (ret) { + DRM_DEV_ERROR(mhdp->dev, "Failed link train %d\n", ret); + return; + } + + ret = cdns_mhdp_set_video_status(mhdp, CONTROL_VIDEO_VALID); + if (ret) { + DRM_DEV_ERROR(mhdp->dev, "Failed to valid video %d\n", ret); + return; + } +} + +static void cdn_dp_bridge_disable(struct drm_bridge *bridge) +{ + struct cdns_mhdp_device *mhdp = bridge->driver_private; + + cdns_mhdp_set_video_status(mhdp, CONTROL_VIDEO_IDLE); +} + +static const struct drm_bridge_funcs cdns_dp_bridge_funcs = { + .attach = cdns_dp_bridge_attach, + .enable = cdn_dp_bridge_enable, + .disable = cdn_dp_bridge_disable, + .mode_set = cdns_dp_bridge_mode_set, + .mode_valid = cdns_dp_bridge_mode_valid, +}; + +static void hotplug_work_func(struct work_struct *work) +{ + struct cdns_mhdp_device *mhdp = container_of(work, + struct cdns_mhdp_device, hotplug_work.work); + struct drm_connector *connector = &mhdp->connector.base; + + drm_helper_hpd_irq_event(connector->dev); + + if (connector->status == connector_status_connected) { + /* Cable connedted */ + DRM_INFO("HDMI/DP Cable Plug In\n"); + enable_irq(mhdp->irq[IRQ_OUT]); + } else if (connector->status == connector_status_disconnected) { + /* Cable Disconnedted */ + DRM_INFO("HDMI/DP Cable Plug Out\n"); + enable_irq(mhdp->irq[IRQ_IN]); + } +} + +static irqreturn_t cdns_dp_irq_thread(int irq, void *data) +{ + struct cdns_mhdp_device *mhdp = data; + + disable_irq_nosync(irq); + + mod_delayed_work(system_wq, &mhdp->hotplug_work, + msecs_to_jiffies(HOTPLUG_DEBOUNCE_MS)); + + return IRQ_HANDLED; +} + +static int __cdns_dp_probe(struct platform_device *pdev, + struct cdns_mhdp_device *mhdp) +{ + struct device *dev = &pdev->dev; + struct resource *iores = NULL; + int ret; + + mutex_init(&mhdp->lock); + + INIT_DELAYED_WORK(&mhdp->hotplug_work, hotplug_work_func); + + iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (iores) { + mhdp->regs_base = devm_ioremap(dev, iores->start, + resource_size(iores)); + if (IS_ERR(mhdp->regs_base)) + return -ENOMEM; + } + + mhdp->irq[IRQ_IN] = platform_get_irq_byname(pdev, "plug_in"); + if (mhdp->irq[IRQ_IN] < 0) { + dev_info(dev, "No plug_in irq number\n"); + } + + mhdp->irq[IRQ_OUT] = platform_get_irq_byname(pdev, "plug_out"); + if (mhdp->irq[IRQ_OUT] < 0) { + dev_info(dev, "No plug_out irq number\n"); + } + + cdns_mhdp_plat_call(mhdp, power_on); + + cdns_mhdp_plat_call(mhdp, firmware_init); + + /* DP FW alive check */ + ret = cdns_mhdp_check_alive(mhdp); + if (ret == false) { + DRM_ERROR("NO dp FW running\n"); + return -ENXIO; + } + + /* DP PHY init before AUX init */ + cdns_mhdp_plat_call(mhdp, phy_set); + + /* Enable Hotplug Detect IRQ thread */ + irq_set_status_flags(mhdp->irq[IRQ_IN], IRQ_NOAUTOEN); + ret = devm_request_threaded_irq(dev, mhdp->irq[IRQ_IN], + NULL, cdns_dp_irq_thread, + IRQF_ONESHOT, dev_name(dev), + mhdp); + + if (ret) { + dev_err(dev, "can't claim irq %d\n", + mhdp->irq[IRQ_IN]); + return -EINVAL; + } + + irq_set_status_flags(mhdp->irq[IRQ_OUT], IRQ_NOAUTOEN); + ret = devm_request_threaded_irq(dev, mhdp->irq[IRQ_OUT], + NULL, cdns_dp_irq_thread, + IRQF_ONESHOT, dev_name(dev), + mhdp); + + if (ret) { + dev_err(dev, "can't claim irq %d\n", + mhdp->irq[IRQ_OUT]); + return -EINVAL; + } + + if (cdns_mhdp_read_hpd(mhdp)) + enable_irq(mhdp->irq[IRQ_OUT]); + else + enable_irq(mhdp->irq[IRQ_IN]); + + mhdp->bridge.base.driver_private = mhdp; + mhdp->bridge.base.funcs = &cdns_dp_bridge_funcs; +#ifdef CONFIG_OF + mhdp->bridge.base.of_node = dev->of_node; +#endif + + dev_set_drvdata(dev, mhdp); + + /* register audio driver */ + cdns_mhdp_register_audio_driver(dev); + + dp_aux_init(mhdp, dev); + + return 0; +} + +static void __cdns_dp_remove(struct cdns_mhdp_device *mhdp) +{ + dp_aux_destroy(mhdp); + cdns_mhdp_unregister_audio_driver(mhdp->dev); +} + +/* ----------------------------------------------------------------------------- + * Probe/remove API, used from platforms based on the DRM bridge API. + */ +int cdns_dp_probe(struct platform_device *pdev, + struct cdns_mhdp_device *mhdp) +{ + int ret; + + ret = __cdns_dp_probe(pdev, mhdp); + if (ret) + return ret; + + drm_bridge_add(&mhdp->bridge.base); + + return 0; +} +EXPORT_SYMBOL_GPL(cdns_dp_probe); + +void cdns_dp_remove(struct platform_device *pdev) +{ + struct cdns_mhdp_device *mhdp = platform_get_drvdata(pdev); + + drm_bridge_remove(&mhdp->bridge.base); + + __cdns_dp_remove(mhdp); +} +EXPORT_SYMBOL_GPL(cdns_dp_remove); + +/* ----------------------------------------------------------------------------- + * Bind/unbind API, used from platforms based on the component framework. + */ +int cdns_dp_bind(struct platform_device *pdev, struct drm_encoder *encoder, + struct cdns_mhdp_device *mhdp) +{ + int ret; + + ret = __cdns_dp_probe(pdev, mhdp); + if (ret < 0) + return ret; + + ret = drm_bridge_attach(encoder, &mhdp->bridge.base, NULL, 0); + if (ret) { + cdns_dp_remove(pdev); + DRM_ERROR("Failed to initialize bridge with drm\n"); + return ret; + } + + return 0; +} +EXPORT_SYMBOL_GPL(cdns_dp_bind); + +void cdns_dp_unbind(struct device *dev) +{ + struct cdns_mhdp_device *mhdp = dev_get_drvdata(dev); + + __cdns_dp_remove(mhdp); +} +EXPORT_SYMBOL_GPL(cdns_dp_unbind); + +MODULE_AUTHOR("Sandor Yu "); +MODULE_DESCRIPTION("Cadence Display Port transmitter driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:cdns-dp"); diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp-audio.c b/drivers/gpu/drm/bridge/cadence/cdns-mhdp-audio.c index 8f51de0672ab..fdd4bcd0d33c 100644 --- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp-audio.c +++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp-audio.c @@ -2,6 +2,9 @@ /* * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd * Author: Chris Zhong + * + * Cadence MHDP Audio driver + * */ #include #include @@ -196,3 +199,100 @@ int cdns_mhdp_audio_config(struct cdns_mhdp_device *mhdp, return ret; } EXPORT_SYMBOL(cdns_mhdp_audio_config); + +static int audio_hw_params(struct device *dev, void *data, + struct hdmi_codec_daifmt *daifmt, + struct hdmi_codec_params *params) +{ + struct cdns_mhdp_device *mhdp = dev_get_drvdata(dev); + struct audio_info audio = { + .sample_width = params->sample_width, + .sample_rate = params->sample_rate, + .channels = params->channels, + .connector_type = mhdp->connector.base.connector_type, + }; + int ret; + + switch (daifmt->fmt) { + case HDMI_I2S: + audio.format = AFMT_I2S; + break; + case HDMI_SPDIF: + audio.format = AFMT_SPDIF_EXT; + break; + default: + DRM_DEV_ERROR(dev, "Invalid format %d\n", daifmt->fmt); + ret = -EINVAL; + goto out; + } + + ret = cdns_mhdp_audio_config(mhdp, &audio); + if (!ret) + mhdp->audio_info = audio; + +out: + return ret; +} + +static void audio_shutdown(struct device *dev, void *data) +{ + struct cdns_mhdp_device *mhdp = dev_get_drvdata(dev); + int ret; + + ret = cdns_mhdp_audio_stop(mhdp, &mhdp->audio_info); + if (!ret) + mhdp->audio_info.format = AFMT_UNUSED; +} + +static int audio_digital_mute(struct device *dev, void *data, + bool enable) +{ + struct cdns_mhdp_device *mhdp = dev_get_drvdata(dev); + int ret; + + ret = cdns_mhdp_audio_mute(mhdp, enable); + + return ret; +} + +static int audio_get_eld(struct device *dev, void *data, + u8 *buf, size_t len) +{ + struct cdns_mhdp_device *mhdp = dev_get_drvdata(dev); + + memcpy(buf, mhdp->connector.base.eld, + min(sizeof(mhdp->connector.base.eld), len)); + + return 0; +} + +static const struct hdmi_codec_ops audio_codec_ops = { + .hw_params = audio_hw_params, + .audio_shutdown = audio_shutdown, + .digital_mute = audio_digital_mute, + .get_eld = audio_get_eld, +}; + +int cdns_mhdp_register_audio_driver(struct device *dev) +{ + struct cdns_mhdp_device *mhdp = dev_get_drvdata(dev); + struct hdmi_codec_pdata codec_data = { + .i2s = 1, + .spdif = 1, + .ops = &audio_codec_ops, + .max_i2s_channels = 8, + }; + + mhdp->audio_pdev = platform_device_register_data( + dev, HDMI_CODEC_DRV_NAME, 1, + &codec_data, sizeof(codec_data)); + + return PTR_ERR_OR_ZERO(mhdp->audio_pdev); +} + +void cdns_mhdp_unregister_audio_driver(struct device *dev) +{ + struct cdns_mhdp_device *mhdp = dev_get_drvdata(dev); + + platform_device_unregister(mhdp->audio_pdev); +} diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.c b/drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.c index efb39cf5f48b..9fd4546c6914 100644 --- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.c +++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.c @@ -357,36 +357,6 @@ int cdns_mhdp_set_firmware_active(struct cdns_mhdp_device *mhdp, bool enable) } EXPORT_SYMBOL(cdns_mhdp_set_firmware_active); -int cdns_mhdp_set_host_cap(struct cdns_mhdp_device *mhdp, bool flip) -{ - u8 msg[8]; - int ret; - - msg[0] = drm_dp_link_rate_to_bw_code(mhdp->dp.rate); - msg[1] = mhdp->dp.num_lanes | SCRAMBLER_EN; - msg[2] = VOLTAGE_LEVEL_2; - msg[3] = PRE_EMPHASIS_LEVEL_3; - msg[4] = PTS1 | PTS2 | PTS3 | PTS4; - msg[5] = FAST_LT_NOT_SUPPORT; - msg[6] = flip ? LANE_MAPPING_FLIPPED : LANE_MAPPING_NORMAL; - msg[7] = ENHANCED; - - ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX, - DPTX_SET_HOST_CAPABILITIES, - sizeof(msg), msg); - if (ret) - goto err_set_host_cap; - - ret = cdns_mhdp_reg_write(mhdp, DP_AUX_SWAP_INVERSION_CONTROL, - AUX_HOST_INVERT); - -err_set_host_cap: - if (ret) - DRM_DEV_ERROR(mhdp->dev, "set host cap failed: %d\n", ret); - return ret; -} -EXPORT_SYMBOL(cdns_mhdp_set_host_cap); - int cdns_mhdp_event_config(struct cdns_mhdp_device *mhdp) { u8 msg[5]; @@ -698,3 +668,15 @@ int cdns_mhdp_config_video(struct cdns_mhdp_device *mhdp) return ret; } EXPORT_SYMBOL(cdns_mhdp_config_video); + +int cdns_phy_reg_write(struct cdns_mhdp_device *mhdp, u32 addr, u32 val) +{ + return cdns_mhdp_reg_write(mhdp, ADDR_PHY_AFE + (addr << 2), val); +} +EXPORT_SYMBOL(cdns_phy_reg_write); + +u32 cdns_phy_reg_read(struct cdns_mhdp_device *mhdp, u32 addr) +{ + return cdns_mhdp_reg_read(mhdp, ADDR_PHY_AFE + (addr << 2)); +} +EXPORT_SYMBOL(cdns_phy_reg_read); diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.h b/drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.h index 1f093a2deaa7..b122bf5f0bdf 100644 --- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.h +++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.h @@ -20,4 +20,7 @@ int cdns_mhdp_reg_write(struct cdns_mhdp_device *mhdp, u32 addr, u32 val); int cdns_mhdp_reg_write_bit(struct cdns_mhdp_device *mhdp, u16 addr, u8 start_bit, u8 bits_no, u32 val); +/* Audio */ +int cdns_mhdp_register_audio_driver(struct device *dev); +void cdns_mhdp_unregister_audio_driver(struct device *dev); #endif diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp-dp.c b/drivers/gpu/drm/bridge/cadence/cdns-mhdp-dp.c index c8160f321aca..8fea072a5568 100644 --- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp-dp.c +++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp-dp.c @@ -108,7 +108,9 @@ static int cdns_mhdp_training_start(struct cdns_mhdp_device *mhdp) if (ret) goto err_training_start; - if (event[1] & EQ_PHASE_FINISHED) + if (event[1] & CLK_RECOVERY_FAILED) + DRM_DEV_ERROR(mhdp->dev, "clock recovery failed\n"); + else if (event[1] & EQ_PHASE_FINISHED) return 0; } @@ -172,3 +174,33 @@ int cdns_mhdp_train_link(struct cdns_mhdp_device *mhdp) return ret; } EXPORT_SYMBOL(cdns_mhdp_train_link); + +int cdns_mhdp_set_host_cap(struct cdns_mhdp_device *mhdp) +{ + u8 msg[8]; + int ret; + + msg[0] = drm_dp_link_rate_to_bw_code(mhdp->dp.rate); + msg[1] = mhdp->dp.num_lanes | SCRAMBLER_EN; + msg[2] = VOLTAGE_LEVEL_2; + msg[3] = PRE_EMPHASIS_LEVEL_3; + msg[4] = PTS1 | PTS2 | PTS3 | PTS4; + msg[5] = FAST_LT_NOT_SUPPORT; + msg[6] = mhdp->lane_mapping; + msg[7] = ENHANCED; + + ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX, + DPTX_SET_HOST_CAPABILITIES, + sizeof(msg), msg); + if (ret) + goto err_set_host_cap; + + ret = cdns_mhdp_reg_write(mhdp, DP_AUX_SWAP_INVERSION_CONTROL, + AUX_HOST_INVERT); + +err_set_host_cap: + if (ret) + DRM_DEV_ERROR(mhdp->dev, "set host cap failed: %d\n", ret); + return ret; +} +EXPORT_SYMBOL(cdns_mhdp_set_host_cap); diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c index 06fd82b217b6..d94d22650899 100644 --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c @@ -423,7 +423,12 @@ static int cdn_dp_enable_phy(struct cdn_dp_device *dp, struct cdn_dp_port *port) } port->lanes = cdn_dp_get_port_lanes(port); - ret = cdns_mhdp_set_host_cap(&dp->mhdp, property.intval); + + if (property.intval) + dp->mhdp.lane_mapping = LANE_MAPPING_FLIPPED; + else + dp->mhdp.lane_mapping = LANE_MAPPING_NORMAL; + ret = cdns_mhdp_set_host_cap(&dp->mhdp); if (ret) { DRM_DEV_ERROR(dev, "set host capabilities failed: %d\n", ret); diff --git a/include/drm/bridge/cdns-mhdp.h b/include/drm/bridge/cdns-mhdp.h index c8170e6048f7..6ffb97e17fae 100644 --- a/include/drm/bridge/cdns-mhdp.h +++ b/include/drm/bridge/cdns-mhdp.h @@ -14,6 +14,7 @@ #define ADDR_IMEM 0x10000 #define ADDR_DMEM 0x20000 +#define ADDR_PHY_AFE 0x80000 /* APB CFG addr */ #define APB_CTRL 0 @@ -81,6 +82,10 @@ #define SOURCE_PIF_SW_RESET 0x30834 /* bellow registers need access by mailbox */ + +/* source phy comp */ +#define LANES_CONFIG 0x0814 + /* source car addr */ #define SOURCE_HDTX_CAR 0x0900 #define SOURCE_DPTX_CAR 0x0904 @@ -424,6 +429,16 @@ /* Reference cycles when using lane clock as reference */ #define LANE_REF_CYC 0x8000 +#define HOTPLUG_DEBOUNCE_MS 200 + +#define IRQ_IN 0 +#define IRQ_OUT 1 +#define IRQ_NUM 2 + +#define cdns_mhdp_plat_call(mhdp, operation) \ + (!(mhdp) ? -ENODEV : (((mhdp)->plat_data && (mhdp)->plat_data->operation) ? \ + (mhdp)->plat_data->operation(mhdp) : ENOIOCTLCMD)) + enum voltage_swing_level { VOLTAGE_LEVEL_0, VOLTAGE_LEVEL_1, @@ -504,9 +519,29 @@ struct cdns_mhdp_connector { struct cdns_mhdp_bridge *bridge; }; +struct cdns_plat_data { + /* Vendor PHY support */ + int (*bind)(struct platform_device *pdev, + struct drm_encoder *encoder, + struct cdns_mhdp_device *mhdp); + void (*unbind)(struct device *dev); + + int (*phy_set)(struct cdns_mhdp_device *mhdp); + bool (*phy_video_valid)(struct cdns_mhdp_device *mhdp); + int (*firmware_init)(struct cdns_mhdp_device *mhdp); + void (*pclk_rate)(struct cdns_mhdp_device *mhdp); + + int (*power_on)(struct cdns_mhdp_device *mhdp); + int (*power_off)(struct cdns_mhdp_device *mhdp); + + char *plat_name; + int lane_mapping; +}; + struct cdns_mhdp_device { struct device *dev; struct cdns_mhdp_connector connector; + struct cdns_mhdp_bridge bridge; void __iomem *regs_base; struct reset_control *spdif_rst; @@ -520,6 +555,11 @@ struct cdns_mhdp_device { unsigned int fw_version; + struct delayed_work hotplug_work; + u32 lane_mapping; + bool power_up; + struct mutex lock; + int irq[IRQ_NUM]; union { struct _dp_data { u32 rate; @@ -528,6 +568,8 @@ struct cdns_mhdp_device { u8 dpcd[DP_RECEIVER_CAP_SIZE]; } dp; }; + const struct cdns_plat_data *plat_data; + }; void cdns_mhdp_clock_reset(struct cdns_mhdp_device *mhdp); @@ -535,7 +577,7 @@ void cdns_mhdp_set_fw_clk(struct cdns_mhdp_device *mhdp, unsigned long clk); int cdns_mhdp_load_firmware(struct cdns_mhdp_device *mhdp, const u32 *i_mem, u32 i_size, const u32 *d_mem, u32 d_size); int cdns_mhdp_set_firmware_active(struct cdns_mhdp_device *mhdp, bool enable); -int cdns_mhdp_set_host_cap(struct cdns_mhdp_device *mhdp, bool flip); +int cdns_mhdp_set_host_cap(struct cdns_mhdp_device *mhdp); int cdns_mhdp_event_config(struct cdns_mhdp_device *mhdp); u32 cdns_mhdp_get_event(struct cdns_mhdp_device *mhdp); int cdns_mhdp_read_hpd(struct cdns_mhdp_device *mhdp); @@ -547,10 +589,18 @@ int cdns_mhdp_get_edid_block(void *mhdp, u8 *edid, int cdns_mhdp_train_link(struct cdns_mhdp_device *mhdp); int cdns_mhdp_set_video_status(struct cdns_mhdp_device *mhdp, int active); int cdns_mhdp_config_video(struct cdns_mhdp_device *mhdp); +bool cdns_mhdp_check_alive(struct cdns_mhdp_device *mhdp); int cdns_mhdp_audio_stop(struct cdns_mhdp_device *mhdp, struct audio_info *audio); int cdns_mhdp_audio_mute(struct cdns_mhdp_device *mhdp, bool enable); int cdns_mhdp_audio_config(struct cdns_mhdp_device *mhdp, struct audio_info *audio); +int cdns_phy_reg_write(struct cdns_mhdp_device *mhdp, u32 addr, u32 val); +u32 cdns_phy_reg_read(struct cdns_mhdp_device *mhdp, u32 addr); + +/* DP */ +int cdns_dp_bind(struct platform_device *pdev, struct drm_encoder *encoder, + struct cdns_mhdp_device *mhdp); +void cdns_dp_unbind(struct device *dev); #endif /* CDNS_MHDP_H_ */