593 lines
14 KiB
C
593 lines
14 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2014 The Linux Foundation. All rights reserved.
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* Copyright (C) 2013 Red Hat
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* Author: Rob Clark <robdclark@gmail.com>
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*/
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#include <linux/of_irq.h>
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#include <linux/of_gpio.h>
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#include <drm/drm_bridge_connector.h>
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#include <drm/drm_of.h>
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#include <sound/hdmi-codec.h>
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#include "hdmi.h"
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void msm_hdmi_set_mode(struct hdmi *hdmi, bool power_on)
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{
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uint32_t ctrl = 0;
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unsigned long flags;
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spin_lock_irqsave(&hdmi->reg_lock, flags);
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if (power_on) {
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ctrl |= HDMI_CTRL_ENABLE;
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if (!hdmi->hdmi_mode) {
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ctrl |= HDMI_CTRL_HDMI;
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hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
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ctrl &= ~HDMI_CTRL_HDMI;
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} else {
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ctrl |= HDMI_CTRL_HDMI;
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}
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} else {
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ctrl = HDMI_CTRL_HDMI;
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}
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hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
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spin_unlock_irqrestore(&hdmi->reg_lock, flags);
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DBG("HDMI Core: %s, HDMI_CTRL=0x%08x",
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power_on ? "Enable" : "Disable", ctrl);
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}
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static irqreturn_t msm_hdmi_irq(int irq, void *dev_id)
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{
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struct hdmi *hdmi = dev_id;
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/* Process HPD: */
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msm_hdmi_hpd_irq(hdmi->bridge);
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/* Process DDC: */
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msm_hdmi_i2c_irq(hdmi->i2c);
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/* Process HDCP: */
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if (hdmi->hdcp_ctrl)
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msm_hdmi_hdcp_irq(hdmi->hdcp_ctrl);
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/* TODO audio.. */
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return IRQ_HANDLED;
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}
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static void msm_hdmi_destroy(struct hdmi *hdmi)
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{
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/*
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* at this point, hpd has been disabled,
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* after flush workq, it's safe to deinit hdcp
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*/
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if (hdmi->workq)
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destroy_workqueue(hdmi->workq);
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msm_hdmi_hdcp_destroy(hdmi);
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if (hdmi->i2c)
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msm_hdmi_i2c_destroy(hdmi->i2c);
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}
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static void msm_hdmi_put_phy(struct hdmi *hdmi)
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{
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if (hdmi->phy_dev) {
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put_device(hdmi->phy_dev);
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hdmi->phy = NULL;
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hdmi->phy_dev = NULL;
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}
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}
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static int msm_hdmi_get_phy(struct hdmi *hdmi)
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{
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struct platform_device *pdev = hdmi->pdev;
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struct platform_device *phy_pdev;
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struct device_node *phy_node;
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phy_node = of_parse_phandle(pdev->dev.of_node, "phys", 0);
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if (!phy_node) {
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DRM_DEV_ERROR(&pdev->dev, "cannot find phy device\n");
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return -ENXIO;
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}
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phy_pdev = of_find_device_by_node(phy_node);
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of_node_put(phy_node);
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if (!phy_pdev)
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return dev_err_probe(&pdev->dev, -EPROBE_DEFER, "phy driver is not ready\n");
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hdmi->phy = platform_get_drvdata(phy_pdev);
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if (!hdmi->phy) {
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put_device(&phy_pdev->dev);
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return dev_err_probe(&pdev->dev, -EPROBE_DEFER, "phy driver is not ready\n");
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}
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hdmi->phy_dev = &phy_pdev->dev;
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return 0;
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}
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/* construct hdmi at bind/probe time, grab all the resources. If
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* we are to EPROBE_DEFER we want to do it here, rather than later
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* at modeset_init() time
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*/
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static int msm_hdmi_init(struct hdmi *hdmi)
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{
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struct platform_device *pdev = hdmi->pdev;
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int ret;
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hdmi->workq = alloc_ordered_workqueue("msm_hdmi", 0);
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if (!hdmi->workq) {
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ret = -ENOMEM;
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goto fail;
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}
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hdmi->i2c = msm_hdmi_i2c_init(hdmi);
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if (IS_ERR(hdmi->i2c)) {
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ret = PTR_ERR(hdmi->i2c);
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DRM_DEV_ERROR(&pdev->dev, "failed to get i2c: %d\n", ret);
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hdmi->i2c = NULL;
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goto fail;
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}
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hdmi->hdcp_ctrl = msm_hdmi_hdcp_init(hdmi);
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if (IS_ERR(hdmi->hdcp_ctrl)) {
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dev_warn(&pdev->dev, "failed to init hdcp: disabled\n");
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hdmi->hdcp_ctrl = NULL;
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}
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return 0;
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fail:
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msm_hdmi_destroy(hdmi);
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return ret;
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}
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/* Second part of initialization, the drm/kms level modeset_init,
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* constructs/initializes mode objects, etc, is called from master
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* driver (not hdmi sub-device's probe/bind!)
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*
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* Any resource (regulator/clk/etc) which could be missing at boot
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* should be handled in msm_hdmi_init() so that failure happens from
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* hdmi sub-device's probe.
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*/
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int msm_hdmi_modeset_init(struct hdmi *hdmi,
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struct drm_device *dev, struct drm_encoder *encoder)
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{
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struct msm_drm_private *priv = dev->dev_private;
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int ret;
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if (priv->num_bridges == ARRAY_SIZE(priv->bridges)) {
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DRM_DEV_ERROR(dev->dev, "too many bridges\n");
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return -ENOSPC;
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}
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hdmi->dev = dev;
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hdmi->encoder = encoder;
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hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
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hdmi->bridge = msm_hdmi_bridge_init(hdmi);
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if (IS_ERR(hdmi->bridge)) {
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ret = PTR_ERR(hdmi->bridge);
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DRM_DEV_ERROR(dev->dev, "failed to create HDMI bridge: %d\n", ret);
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hdmi->bridge = NULL;
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goto fail;
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}
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if (hdmi->next_bridge) {
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ret = drm_bridge_attach(hdmi->encoder, hdmi->next_bridge, hdmi->bridge,
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DRM_BRIDGE_ATTACH_NO_CONNECTOR);
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if (ret) {
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DRM_DEV_ERROR(dev->dev, "failed to attach next HDMI bridge: %d\n", ret);
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goto fail;
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}
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}
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hdmi->connector = drm_bridge_connector_init(hdmi->dev, encoder);
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if (IS_ERR(hdmi->connector)) {
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ret = PTR_ERR(hdmi->connector);
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DRM_DEV_ERROR(dev->dev, "failed to create HDMI connector: %d\n", ret);
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hdmi->connector = NULL;
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goto fail;
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}
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drm_connector_attach_encoder(hdmi->connector, hdmi->encoder);
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ret = devm_request_irq(dev->dev, hdmi->irq,
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msm_hdmi_irq, IRQF_TRIGGER_HIGH,
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"hdmi_isr", hdmi);
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if (ret < 0) {
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DRM_DEV_ERROR(dev->dev, "failed to request IRQ%u: %d\n",
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hdmi->irq, ret);
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goto fail;
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}
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ret = msm_hdmi_hpd_enable(hdmi->bridge);
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if (ret < 0) {
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DRM_DEV_ERROR(&hdmi->pdev->dev, "failed to enable HPD: %d\n", ret);
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goto fail;
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}
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priv->bridges[priv->num_bridges++] = hdmi->bridge;
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return 0;
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fail:
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/* bridge is normally destroyed by drm: */
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if (hdmi->bridge) {
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msm_hdmi_bridge_destroy(hdmi->bridge);
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hdmi->bridge = NULL;
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}
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if (hdmi->connector) {
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hdmi->connector->funcs->destroy(hdmi->connector);
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hdmi->connector = NULL;
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}
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return ret;
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}
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/*
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* The hdmi device:
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*/
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#define HDMI_CFG(item, entry) \
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.item ## _names = item ##_names_ ## entry, \
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.item ## _cnt = ARRAY_SIZE(item ## _names_ ## entry)
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static const char *hpd_reg_names_8960[] = {"core-vdda"};
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static const char *hpd_clk_names_8960[] = {"core", "master_iface", "slave_iface"};
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static const struct hdmi_platform_config hdmi_tx_8960_config = {
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HDMI_CFG(hpd_reg, 8960),
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HDMI_CFG(hpd_clk, 8960),
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};
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static const char *pwr_reg_names_8x74[] = {"core-vdda", "core-vcc"};
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static const char *pwr_clk_names_8x74[] = {"extp", "alt_iface"};
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static const char *hpd_clk_names_8x74[] = {"iface", "core", "mdp_core"};
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static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0};
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static const struct hdmi_platform_config hdmi_tx_8974_config = {
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HDMI_CFG(pwr_reg, 8x74),
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HDMI_CFG(pwr_clk, 8x74),
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HDMI_CFG(hpd_clk, 8x74),
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.hpd_freq = hpd_clk_freq_8x74,
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};
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/*
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* HDMI audio codec callbacks
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*/
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static int msm_hdmi_audio_hw_params(struct device *dev, void *data,
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struct hdmi_codec_daifmt *daifmt,
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struct hdmi_codec_params *params)
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{
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struct hdmi *hdmi = dev_get_drvdata(dev);
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unsigned int chan;
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unsigned int channel_allocation = 0;
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unsigned int rate;
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unsigned int level_shift = 0; /* 0dB */
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bool down_mix = false;
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DRM_DEV_DEBUG(dev, "%u Hz, %d bit, %d channels\n", params->sample_rate,
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params->sample_width, params->cea.channels);
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switch (params->cea.channels) {
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case 2:
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/* FR and FL speakers */
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channel_allocation = 0;
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chan = MSM_HDMI_AUDIO_CHANNEL_2;
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break;
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case 4:
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/* FC, LFE, FR and FL speakers */
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channel_allocation = 0x3;
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chan = MSM_HDMI_AUDIO_CHANNEL_4;
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break;
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case 6:
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/* RR, RL, FC, LFE, FR and FL speakers */
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channel_allocation = 0x0B;
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chan = MSM_HDMI_AUDIO_CHANNEL_6;
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break;
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case 8:
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/* FRC, FLC, RR, RL, FC, LFE, FR and FL speakers */
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channel_allocation = 0x1F;
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chan = MSM_HDMI_AUDIO_CHANNEL_8;
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break;
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default:
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return -EINVAL;
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}
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switch (params->sample_rate) {
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case 32000:
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rate = HDMI_SAMPLE_RATE_32KHZ;
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break;
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case 44100:
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rate = HDMI_SAMPLE_RATE_44_1KHZ;
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break;
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case 48000:
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rate = HDMI_SAMPLE_RATE_48KHZ;
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break;
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case 88200:
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rate = HDMI_SAMPLE_RATE_88_2KHZ;
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break;
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case 96000:
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rate = HDMI_SAMPLE_RATE_96KHZ;
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break;
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case 176400:
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rate = HDMI_SAMPLE_RATE_176_4KHZ;
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break;
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case 192000:
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rate = HDMI_SAMPLE_RATE_192KHZ;
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break;
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default:
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DRM_DEV_ERROR(dev, "rate[%d] not supported!\n",
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params->sample_rate);
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return -EINVAL;
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}
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msm_hdmi_audio_set_sample_rate(hdmi, rate);
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msm_hdmi_audio_info_setup(hdmi, 1, chan, channel_allocation,
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level_shift, down_mix);
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return 0;
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}
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static void msm_hdmi_audio_shutdown(struct device *dev, void *data)
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{
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struct hdmi *hdmi = dev_get_drvdata(dev);
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msm_hdmi_audio_info_setup(hdmi, 0, 0, 0, 0, 0);
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}
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static const struct hdmi_codec_ops msm_hdmi_audio_codec_ops = {
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.hw_params = msm_hdmi_audio_hw_params,
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.audio_shutdown = msm_hdmi_audio_shutdown,
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};
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static struct hdmi_codec_pdata codec_data = {
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.ops = &msm_hdmi_audio_codec_ops,
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.max_i2s_channels = 8,
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.i2s = 1,
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};
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static int msm_hdmi_register_audio_driver(struct hdmi *hdmi, struct device *dev)
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{
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hdmi->audio_pdev = platform_device_register_data(dev,
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HDMI_CODEC_DRV_NAME,
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PLATFORM_DEVID_AUTO,
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&codec_data,
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sizeof(codec_data));
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return PTR_ERR_OR_ZERO(hdmi->audio_pdev);
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}
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static int msm_hdmi_bind(struct device *dev, struct device *master, void *data)
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{
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struct msm_drm_private *priv = dev_get_drvdata(master);
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struct hdmi *hdmi = dev_get_drvdata(dev);
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int err;
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err = msm_hdmi_init(hdmi);
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if (err)
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return err;
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priv->hdmi = hdmi;
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err = msm_hdmi_register_audio_driver(hdmi, dev);
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if (err) {
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DRM_ERROR("Failed to attach an audio codec %d\n", err);
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hdmi->audio_pdev = NULL;
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}
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return 0;
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}
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static void msm_hdmi_unbind(struct device *dev, struct device *master,
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void *data)
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{
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struct msm_drm_private *priv = dev_get_drvdata(master);
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if (priv->hdmi) {
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if (priv->hdmi->audio_pdev)
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platform_device_unregister(priv->hdmi->audio_pdev);
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msm_hdmi_destroy(priv->hdmi);
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priv->hdmi = NULL;
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}
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}
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static const struct component_ops msm_hdmi_ops = {
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.bind = msm_hdmi_bind,
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.unbind = msm_hdmi_unbind,
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};
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static int msm_hdmi_dev_probe(struct platform_device *pdev)
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{
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const struct hdmi_platform_config *config;
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struct device *dev = &pdev->dev;
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struct hdmi *hdmi;
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struct resource *res;
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int i, ret;
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config = of_device_get_match_data(dev);
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if (!config)
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return -EINVAL;
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hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
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if (!hdmi)
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return -ENOMEM;
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hdmi->pdev = pdev;
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hdmi->config = config;
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spin_lock_init(&hdmi->reg_lock);
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ret = drm_of_find_panel_or_bridge(pdev->dev.of_node, 1, 0, NULL, &hdmi->next_bridge);
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if (ret && ret != -ENODEV)
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return ret;
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hdmi->mmio = msm_ioremap(pdev, "core_physical");
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if (IS_ERR(hdmi->mmio))
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return PTR_ERR(hdmi->mmio);
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/* HDCP needs physical address of hdmi register */
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res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
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"core_physical");
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if (!res)
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return -EINVAL;
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hdmi->mmio_phy_addr = res->start;
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hdmi->qfprom_mmio = msm_ioremap(pdev, "qfprom_physical");
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if (IS_ERR(hdmi->qfprom_mmio)) {
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DRM_DEV_INFO(&pdev->dev, "can't find qfprom resource\n");
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hdmi->qfprom_mmio = NULL;
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}
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hdmi->irq = platform_get_irq(pdev, 0);
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if (hdmi->irq < 0)
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return hdmi->irq;
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hdmi->hpd_regs = devm_kcalloc(&pdev->dev,
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config->hpd_reg_cnt,
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sizeof(hdmi->hpd_regs[0]),
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GFP_KERNEL);
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if (!hdmi->hpd_regs)
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return -ENOMEM;
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for (i = 0; i < config->hpd_reg_cnt; i++)
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hdmi->hpd_regs[i].supply = config->hpd_reg_names[i];
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ret = devm_regulator_bulk_get(&pdev->dev, config->hpd_reg_cnt, hdmi->hpd_regs);
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if (ret)
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return dev_err_probe(dev, ret, "failed to get hpd regulators\n");
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hdmi->pwr_regs = devm_kcalloc(&pdev->dev,
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config->pwr_reg_cnt,
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sizeof(hdmi->pwr_regs[0]),
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GFP_KERNEL);
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if (!hdmi->pwr_regs)
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return -ENOMEM;
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for (i = 0; i < config->pwr_reg_cnt; i++)
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hdmi->pwr_regs[i].supply = config->pwr_reg_names[i];
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ret = devm_regulator_bulk_get(&pdev->dev, config->pwr_reg_cnt, hdmi->pwr_regs);
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if (ret)
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return dev_err_probe(dev, ret, "failed to get pwr regulators\n");
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hdmi->hpd_clks = devm_kcalloc(&pdev->dev,
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config->hpd_clk_cnt,
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sizeof(hdmi->hpd_clks[0]),
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GFP_KERNEL);
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if (!hdmi->hpd_clks)
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return -ENOMEM;
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for (i = 0; i < config->hpd_clk_cnt; i++) {
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struct clk *clk;
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clk = msm_clk_get(pdev, config->hpd_clk_names[i]);
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if (IS_ERR(clk))
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return dev_err_probe(dev, PTR_ERR(clk),
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"failed to get hpd clk: %s\n",
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config->hpd_clk_names[i]);
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hdmi->hpd_clks[i] = clk;
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}
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hdmi->pwr_clks = devm_kcalloc(&pdev->dev,
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config->pwr_clk_cnt,
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sizeof(hdmi->pwr_clks[0]),
|
|
GFP_KERNEL);
|
|
if (!hdmi->pwr_clks)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < config->pwr_clk_cnt; i++) {
|
|
struct clk *clk;
|
|
|
|
clk = msm_clk_get(pdev, config->pwr_clk_names[i]);
|
|
if (IS_ERR(clk))
|
|
return dev_err_probe(dev, PTR_ERR(clk),
|
|
"failed to get pwr clk: %s\n",
|
|
config->pwr_clk_names[i]);
|
|
|
|
hdmi->pwr_clks[i] = clk;
|
|
}
|
|
|
|
hdmi->hpd_gpiod = devm_gpiod_get_optional(&pdev->dev, "hpd", GPIOD_IN);
|
|
/* This will catch e.g. -EPROBE_DEFER */
|
|
if (IS_ERR(hdmi->hpd_gpiod))
|
|
return dev_err_probe(dev, PTR_ERR(hdmi->hpd_gpiod),
|
|
"failed to get hpd gpio\n");
|
|
|
|
if (!hdmi->hpd_gpiod)
|
|
DBG("failed to get HPD gpio");
|
|
|
|
if (hdmi->hpd_gpiod)
|
|
gpiod_set_consumer_name(hdmi->hpd_gpiod, "HDMI_HPD");
|
|
|
|
ret = msm_hdmi_get_phy(hdmi);
|
|
if (ret) {
|
|
DRM_DEV_ERROR(&pdev->dev, "failed to get phy\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = devm_pm_runtime_enable(&pdev->dev);
|
|
if (ret)
|
|
goto err_put_phy;
|
|
|
|
platform_set_drvdata(pdev, hdmi);
|
|
|
|
ret = component_add(&pdev->dev, &msm_hdmi_ops);
|
|
if (ret)
|
|
goto err_put_phy;
|
|
|
|
return 0;
|
|
|
|
err_put_phy:
|
|
msm_hdmi_put_phy(hdmi);
|
|
return ret;
|
|
}
|
|
|
|
static int msm_hdmi_dev_remove(struct platform_device *pdev)
|
|
{
|
|
struct hdmi *hdmi = dev_get_drvdata(&pdev->dev);
|
|
|
|
component_del(&pdev->dev, &msm_hdmi_ops);
|
|
|
|
msm_hdmi_put_phy(hdmi);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id msm_hdmi_dt_match[] = {
|
|
{ .compatible = "qcom,hdmi-tx-8996", .data = &hdmi_tx_8974_config },
|
|
{ .compatible = "qcom,hdmi-tx-8994", .data = &hdmi_tx_8974_config },
|
|
{ .compatible = "qcom,hdmi-tx-8084", .data = &hdmi_tx_8974_config },
|
|
{ .compatible = "qcom,hdmi-tx-8974", .data = &hdmi_tx_8974_config },
|
|
{ .compatible = "qcom,hdmi-tx-8960", .data = &hdmi_tx_8960_config },
|
|
{ .compatible = "qcom,hdmi-tx-8660", .data = &hdmi_tx_8960_config },
|
|
{}
|
|
};
|
|
|
|
static struct platform_driver msm_hdmi_driver = {
|
|
.probe = msm_hdmi_dev_probe,
|
|
.remove = msm_hdmi_dev_remove,
|
|
.driver = {
|
|
.name = "hdmi_msm",
|
|
.of_match_table = msm_hdmi_dt_match,
|
|
},
|
|
};
|
|
|
|
void __init msm_hdmi_register(void)
|
|
{
|
|
msm_hdmi_phy_driver_register();
|
|
platform_driver_register(&msm_hdmi_driver);
|
|
}
|
|
|
|
void __exit msm_hdmi_unregister(void)
|
|
{
|
|
platform_driver_unregister(&msm_hdmi_driver);
|
|
msm_hdmi_phy_driver_unregister();
|
|
}
|