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path: root/drivers/gpu/drm/omapdrm/dss/hdmi4.c
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Diffstat (limited to 'drivers/gpu/drm/omapdrm/dss/hdmi4.c')
-rw-r--r--drivers/gpu/drm/omapdrm/dss/hdmi4.c854
1 files changed, 854 insertions, 0 deletions
diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
new file mode 100644
index 000000000..a8a75dc24
--- /dev/null
+++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
@@ -0,0 +1,854 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * HDMI interface DSS driver for TI's OMAP4 family of SoCs.
+ *
+ * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com/
+ * Authors: Yong Zhi
+ * Mythri pk <mythripk@ti.com>
+ */
+
+#define DSS_SUBSYS_NAME "HDMI"
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/mutex.h>
+#include <linux/delay.h>
+#include <linux/string.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/clk.h>
+#include <linux/regulator/consumer.h>
+#include <linux/component.h>
+#include <linux/of.h>
+#include <linux/of_graph.h>
+#include <sound/omap-hdmi-audio.h>
+#include <media/cec.h>
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_state_helper.h>
+#include <drm/drm_edid.h>
+
+#include "omapdss.h"
+#include "hdmi4_core.h"
+#include "hdmi4_cec.h"
+#include "dss.h"
+#include "hdmi.h"
+
+static int hdmi_runtime_get(struct omap_hdmi *hdmi)
+{
+ int r;
+
+ DSSDBG("hdmi_runtime_get\n");
+
+ r = pm_runtime_get_sync(&hdmi->pdev->dev);
+ if (WARN_ON(r < 0)) {
+ pm_runtime_put_noidle(&hdmi->pdev->dev);
+ return r;
+ }
+ return 0;
+}
+
+static void hdmi_runtime_put(struct omap_hdmi *hdmi)
+{
+ int r;
+
+ DSSDBG("hdmi_runtime_put\n");
+
+ r = pm_runtime_put_sync(&hdmi->pdev->dev);
+ WARN_ON(r < 0 && r != -ENOSYS);
+}
+
+static irqreturn_t hdmi_irq_handler(int irq, void *data)
+{
+ struct omap_hdmi *hdmi = data;
+ struct hdmi_wp_data *wp = &hdmi->wp;
+ u32 irqstatus;
+
+ irqstatus = hdmi_wp_get_irqstatus(wp);
+ hdmi_wp_set_irqstatus(wp, irqstatus);
+
+ if ((irqstatus & HDMI_IRQ_LINK_CONNECT) &&
+ irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
+ /*
+ * If we get both connect and disconnect interrupts at the same
+ * time, turn off the PHY, clear interrupts, and restart, which
+ * raises connect interrupt if a cable is connected, or nothing
+ * if cable is not connected.
+ */
+ hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF);
+
+ hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT |
+ HDMI_IRQ_LINK_DISCONNECT);
+
+ hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
+ } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) {
+ hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON);
+ } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
+ hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
+ }
+ if (irqstatus & HDMI_IRQ_CORE) {
+ u32 intr4 = hdmi_read_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4);
+
+ hdmi_write_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4, intr4);
+ if (intr4 & 8)
+ hdmi4_cec_irq(&hdmi->core);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int hdmi_power_on_core(struct omap_hdmi *hdmi)
+{
+ int r;
+
+ if (hdmi->core.core_pwr_cnt++)
+ return 0;
+
+ r = regulator_enable(hdmi->vdda_reg);
+ if (r)
+ goto err_reg_enable;
+
+ r = hdmi_runtime_get(hdmi);
+ if (r)
+ goto err_runtime_get;
+
+ hdmi4_core_powerdown_disable(&hdmi->core);
+
+ /* Make selection of HDMI in DSS */
+ dss_select_hdmi_venc_clk_source(hdmi->dss, DSS_HDMI_M_PCLK);
+
+ hdmi->core_enabled = true;
+
+ return 0;
+
+err_runtime_get:
+ regulator_disable(hdmi->vdda_reg);
+err_reg_enable:
+ hdmi->core.core_pwr_cnt--;
+
+ return r;
+}
+
+static void hdmi_power_off_core(struct omap_hdmi *hdmi)
+{
+ if (--hdmi->core.core_pwr_cnt)
+ return;
+
+ hdmi->core_enabled = false;
+
+ hdmi_runtime_put(hdmi);
+ regulator_disable(hdmi->vdda_reg);
+}
+
+static int hdmi_power_on_full(struct omap_hdmi *hdmi)
+{
+ int r;
+ const struct videomode *vm;
+ struct hdmi_wp_data *wp = &hdmi->wp;
+ struct dss_pll_clock_info hdmi_cinfo = { 0 };
+ unsigned int pc;
+
+ r = hdmi_power_on_core(hdmi);
+ if (r)
+ return r;
+
+ /* disable and clear irqs */
+ hdmi_wp_clear_irqenable(wp, ~HDMI_IRQ_CORE);
+ hdmi_wp_set_irqstatus(wp, ~HDMI_IRQ_CORE);
+
+ vm = &hdmi->cfg.vm;
+
+ DSSDBG("hdmi_power_on hactive= %d vactive = %d\n", vm->hactive,
+ vm->vactive);
+
+ pc = vm->pixelclock;
+ if (vm->flags & DISPLAY_FLAGS_DOUBLECLK)
+ pc *= 2;
+
+ /* DSS_HDMI_TCLK is bitclk / 10 */
+ pc *= 10;
+
+ dss_pll_calc_b(&hdmi->pll.pll, clk_get_rate(hdmi->pll.pll.clkin),
+ pc, &hdmi_cinfo);
+
+ r = dss_pll_enable(&hdmi->pll.pll);
+ if (r) {
+ DSSERR("Failed to enable PLL\n");
+ goto err_pll_enable;
+ }
+
+ r = dss_pll_set_config(&hdmi->pll.pll, &hdmi_cinfo);
+ if (r) {
+ DSSERR("Failed to configure PLL\n");
+ goto err_pll_cfg;
+ }
+
+ r = hdmi_phy_configure(&hdmi->phy, hdmi_cinfo.clkdco,
+ hdmi_cinfo.clkout[0]);
+ if (r) {
+ DSSDBG("Failed to configure PHY\n");
+ goto err_phy_cfg;
+ }
+
+ r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
+ if (r)
+ goto err_phy_pwr;
+
+ hdmi4_configure(&hdmi->core, &hdmi->wp, &hdmi->cfg);
+
+ r = dss_mgr_enable(&hdmi->output);
+ if (r)
+ goto err_mgr_enable;
+
+ r = hdmi_wp_video_start(&hdmi->wp);
+ if (r)
+ goto err_vid_enable;
+
+ hdmi_wp_set_irqenable(wp,
+ HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
+
+ return 0;
+
+err_vid_enable:
+ dss_mgr_disable(&hdmi->output);
+err_mgr_enable:
+ hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF);
+err_phy_pwr:
+err_phy_cfg:
+err_pll_cfg:
+ dss_pll_disable(&hdmi->pll.pll);
+err_pll_enable:
+ hdmi_power_off_core(hdmi);
+ return -EIO;
+}
+
+static void hdmi_power_off_full(struct omap_hdmi *hdmi)
+{
+ hdmi_wp_clear_irqenable(&hdmi->wp, ~HDMI_IRQ_CORE);
+
+ hdmi_wp_video_stop(&hdmi->wp);
+
+ dss_mgr_disable(&hdmi->output);
+
+ hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF);
+
+ dss_pll_disable(&hdmi->pll.pll);
+
+ hdmi_power_off_core(hdmi);
+}
+
+static int hdmi_dump_regs(struct seq_file *s, void *p)
+{
+ struct omap_hdmi *hdmi = s->private;
+
+ mutex_lock(&hdmi->lock);
+
+ if (hdmi_runtime_get(hdmi)) {
+ mutex_unlock(&hdmi->lock);
+ return 0;
+ }
+
+ hdmi_wp_dump(&hdmi->wp, s);
+ hdmi_pll_dump(&hdmi->pll, s);
+ hdmi_phy_dump(&hdmi->phy, s);
+ hdmi4_core_dump(&hdmi->core, s);
+
+ hdmi_runtime_put(hdmi);
+ mutex_unlock(&hdmi->lock);
+ return 0;
+}
+
+static void hdmi_start_audio_stream(struct omap_hdmi *hd)
+{
+ hdmi_wp_audio_enable(&hd->wp, true);
+ hdmi4_audio_start(&hd->core, &hd->wp);
+}
+
+static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
+{
+ hdmi4_audio_stop(&hd->core, &hd->wp);
+ hdmi_wp_audio_enable(&hd->wp, false);
+}
+
+int hdmi4_core_enable(struct hdmi_core_data *core)
+{
+ struct omap_hdmi *hdmi = container_of(core, struct omap_hdmi, core);
+ int r = 0;
+
+ DSSDBG("ENTER omapdss_hdmi4_core_enable\n");
+
+ mutex_lock(&hdmi->lock);
+
+ r = hdmi_power_on_core(hdmi);
+ if (r) {
+ DSSERR("failed to power on device\n");
+ goto err0;
+ }
+
+ mutex_unlock(&hdmi->lock);
+ return 0;
+
+err0:
+ mutex_unlock(&hdmi->lock);
+ return r;
+}
+
+void hdmi4_core_disable(struct hdmi_core_data *core)
+{
+ struct omap_hdmi *hdmi = container_of(core, struct omap_hdmi, core);
+
+ DSSDBG("Enter omapdss_hdmi4_core_disable\n");
+
+ mutex_lock(&hdmi->lock);
+
+ hdmi_power_off_core(hdmi);
+
+ mutex_unlock(&hdmi->lock);
+}
+
+/* -----------------------------------------------------------------------------
+ * DRM Bridge Operations
+ */
+
+static int hdmi4_bridge_attach(struct drm_bridge *bridge,
+ enum drm_bridge_attach_flags flags)
+{
+ struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
+
+ if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR))
+ return -EINVAL;
+
+ return drm_bridge_attach(bridge->encoder, hdmi->output.next_bridge,
+ bridge, flags);
+}
+
+static void hdmi4_bridge_mode_set(struct drm_bridge *bridge,
+ const struct drm_display_mode *mode,
+ const struct drm_display_mode *adjusted_mode)
+{
+ struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
+
+ mutex_lock(&hdmi->lock);
+
+ drm_display_mode_to_videomode(adjusted_mode, &hdmi->cfg.vm);
+
+ dispc_set_tv_pclk(hdmi->dss->dispc, adjusted_mode->clock * 1000);
+
+ mutex_unlock(&hdmi->lock);
+}
+
+static void hdmi4_bridge_enable(struct drm_bridge *bridge,
+ struct drm_bridge_state *bridge_state)
+{
+ struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
+ struct drm_atomic_state *state = bridge_state->base.state;
+ struct drm_connector_state *conn_state;
+ struct drm_connector *connector;
+ struct drm_crtc_state *crtc_state;
+ unsigned long flags;
+ int ret;
+
+ /*
+ * None of these should fail, as the bridge can't be enabled without a
+ * valid CRTC to connector path with fully populated new states.
+ */
+ connector = drm_atomic_get_new_connector_for_encoder(state,
+ bridge->encoder);
+ if (WARN_ON(!connector))
+ return;
+ conn_state = drm_atomic_get_new_connector_state(state, connector);
+ if (WARN_ON(!conn_state))
+ return;
+ crtc_state = drm_atomic_get_new_crtc_state(state, conn_state->crtc);
+ if (WARN_ON(!crtc_state))
+ return;
+
+ hdmi->cfg.hdmi_dvi_mode = connector->display_info.is_hdmi
+ ? HDMI_HDMI : HDMI_DVI;
+
+ if (connector->display_info.is_hdmi) {
+ const struct drm_display_mode *mode;
+ struct hdmi_avi_infoframe avi;
+
+ mode = &crtc_state->adjusted_mode;
+ ret = drm_hdmi_avi_infoframe_from_display_mode(&avi, connector,
+ mode);
+ if (ret == 0)
+ hdmi->cfg.infoframe = avi;
+ }
+
+ mutex_lock(&hdmi->lock);
+
+ ret = hdmi_power_on_full(hdmi);
+ if (ret) {
+ DSSERR("failed to power on device\n");
+ goto done;
+ }
+
+ if (hdmi->audio_configured) {
+ ret = hdmi4_audio_config(&hdmi->core, &hdmi->wp,
+ &hdmi->audio_config,
+ hdmi->cfg.vm.pixelclock);
+ if (ret) {
+ DSSERR("Error restoring audio configuration: %d", ret);
+ hdmi->audio_abort_cb(&hdmi->pdev->dev);
+ hdmi->audio_configured = false;
+ }
+ }
+
+ spin_lock_irqsave(&hdmi->audio_playing_lock, flags);
+ if (hdmi->audio_configured && hdmi->audio_playing)
+ hdmi_start_audio_stream(hdmi);
+ hdmi->display_enabled = true;
+ spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags);
+
+done:
+ mutex_unlock(&hdmi->lock);
+}
+
+static void hdmi4_bridge_disable(struct drm_bridge *bridge,
+ struct drm_bridge_state *bridge_state)
+{
+ struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
+ unsigned long flags;
+
+ mutex_lock(&hdmi->lock);
+
+ spin_lock_irqsave(&hdmi->audio_playing_lock, flags);
+ hdmi_stop_audio_stream(hdmi);
+ hdmi->display_enabled = false;
+ spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags);
+
+ hdmi_power_off_full(hdmi);
+
+ mutex_unlock(&hdmi->lock);
+}
+
+static void hdmi4_bridge_hpd_notify(struct drm_bridge *bridge,
+ enum drm_connector_status status)
+{
+ struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
+
+ if (status == connector_status_disconnected)
+ hdmi4_cec_set_phys_addr(&hdmi->core, CEC_PHYS_ADDR_INVALID);
+}
+
+static struct edid *hdmi4_bridge_get_edid(struct drm_bridge *bridge,
+ struct drm_connector *connector)
+{
+ struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
+ struct edid *edid = NULL;
+ unsigned int cec_addr;
+ bool need_enable;
+ int r;
+
+ need_enable = hdmi->core_enabled == false;
+
+ if (need_enable) {
+ r = hdmi4_core_enable(&hdmi->core);
+ if (r)
+ return NULL;
+ }
+
+ mutex_lock(&hdmi->lock);
+ r = hdmi_runtime_get(hdmi);
+ BUG_ON(r);
+
+ r = hdmi4_core_ddc_init(&hdmi->core);
+ if (r)
+ goto done;
+
+ edid = drm_do_get_edid(connector, hdmi4_core_ddc_read, &hdmi->core);
+
+done:
+ hdmi_runtime_put(hdmi);
+ mutex_unlock(&hdmi->lock);
+
+ if (edid && edid->extensions) {
+ unsigned int len = (edid->extensions + 1) * EDID_LENGTH;
+
+ cec_addr = cec_get_edid_phys_addr((u8 *)edid, len, NULL);
+ } else {
+ cec_addr = CEC_PHYS_ADDR_INVALID;
+ }
+
+ hdmi4_cec_set_phys_addr(&hdmi->core, cec_addr);
+
+ if (need_enable)
+ hdmi4_core_disable(&hdmi->core);
+
+ return edid;
+}
+
+static const struct drm_bridge_funcs hdmi4_bridge_funcs = {
+ .attach = hdmi4_bridge_attach,
+ .mode_set = hdmi4_bridge_mode_set,
+ .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
+ .atomic_reset = drm_atomic_helper_bridge_reset,
+ .atomic_enable = hdmi4_bridge_enable,
+ .atomic_disable = hdmi4_bridge_disable,
+ .hpd_notify = hdmi4_bridge_hpd_notify,
+ .get_edid = hdmi4_bridge_get_edid,
+};
+
+static void hdmi4_bridge_init(struct omap_hdmi *hdmi)
+{
+ hdmi->bridge.funcs = &hdmi4_bridge_funcs;
+ hdmi->bridge.of_node = hdmi->pdev->dev.of_node;
+ hdmi->bridge.ops = DRM_BRIDGE_OP_EDID;
+ hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
+
+ drm_bridge_add(&hdmi->bridge);
+}
+
+static void hdmi4_bridge_cleanup(struct omap_hdmi *hdmi)
+{
+ drm_bridge_remove(&hdmi->bridge);
+}
+
+/* -----------------------------------------------------------------------------
+ * Audio Callbacks
+ */
+
+static int hdmi_audio_startup(struct device *dev,
+ void (*abort_cb)(struct device *dev))
+{
+ struct omap_hdmi *hd = dev_get_drvdata(dev);
+
+ mutex_lock(&hd->lock);
+
+ WARN_ON(hd->audio_abort_cb != NULL);
+
+ hd->audio_abort_cb = abort_cb;
+
+ mutex_unlock(&hd->lock);
+
+ return 0;
+}
+
+static int hdmi_audio_shutdown(struct device *dev)
+{
+ struct omap_hdmi *hd = dev_get_drvdata(dev);
+
+ mutex_lock(&hd->lock);
+ hd->audio_abort_cb = NULL;
+ hd->audio_configured = false;
+ hd->audio_playing = false;
+ mutex_unlock(&hd->lock);
+
+ return 0;
+}
+
+static int hdmi_audio_start(struct device *dev)
+{
+ struct omap_hdmi *hd = dev_get_drvdata(dev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&hd->audio_playing_lock, flags);
+
+ if (hd->display_enabled) {
+ if (!hdmi_mode_has_audio(&hd->cfg))
+ DSSERR("%s: Video mode does not support audio\n",
+ __func__);
+ hdmi_start_audio_stream(hd);
+ }
+ hd->audio_playing = true;
+
+ spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
+ return 0;
+}
+
+static void hdmi_audio_stop(struct device *dev)
+{
+ struct omap_hdmi *hd = dev_get_drvdata(dev);
+ unsigned long flags;
+
+ WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
+
+ spin_lock_irqsave(&hd->audio_playing_lock, flags);
+
+ if (hd->display_enabled)
+ hdmi_stop_audio_stream(hd);
+ hd->audio_playing = false;
+
+ spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
+}
+
+static int hdmi_audio_config(struct device *dev,
+ struct omap_dss_audio *dss_audio)
+{
+ struct omap_hdmi *hd = dev_get_drvdata(dev);
+ int ret = 0;
+
+ mutex_lock(&hd->lock);
+
+ if (hd->display_enabled) {
+ ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
+ hd->cfg.vm.pixelclock);
+ if (ret)
+ goto out;
+ }
+
+ hd->audio_configured = true;
+ hd->audio_config = *dss_audio;
+out:
+ mutex_unlock(&hd->lock);
+
+ return ret;
+}
+
+static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
+ .audio_startup = hdmi_audio_startup,
+ .audio_shutdown = hdmi_audio_shutdown,
+ .audio_start = hdmi_audio_start,
+ .audio_stop = hdmi_audio_stop,
+ .audio_config = hdmi_audio_config,
+};
+
+static int hdmi_audio_register(struct omap_hdmi *hdmi)
+{
+ struct omap_hdmi_audio_pdata pdata = {
+ .dev = &hdmi->pdev->dev,
+ .version = 4,
+ .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi->wp),
+ .ops = &hdmi_audio_ops,
+ };
+
+ hdmi->audio_pdev = platform_device_register_data(
+ &hdmi->pdev->dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
+ &pdata, sizeof(pdata));
+
+ if (IS_ERR(hdmi->audio_pdev))
+ return PTR_ERR(hdmi->audio_pdev);
+
+ return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * Component Bind & Unbind
+ */
+
+static int hdmi4_bind(struct device *dev, struct device *master, void *data)
+{
+ struct dss_device *dss = dss_get_device(master);
+ struct omap_hdmi *hdmi = dev_get_drvdata(dev);
+ int r;
+
+ hdmi->dss = dss;
+
+ r = hdmi_runtime_get(hdmi);
+ if (r)
+ return r;
+
+ r = hdmi_pll_init(dss, hdmi->pdev, &hdmi->pll, &hdmi->wp);
+ if (r)
+ goto err_runtime_put;
+
+ r = hdmi4_cec_init(hdmi->pdev, &hdmi->core, &hdmi->wp);
+ if (r)
+ goto err_pll_uninit;
+
+ r = hdmi_audio_register(hdmi);
+ if (r) {
+ DSSERR("Registering HDMI audio failed\n");
+ goto err_cec_uninit;
+ }
+
+ hdmi->debugfs = dss_debugfs_create_file(dss, "hdmi", hdmi_dump_regs,
+ hdmi);
+
+ hdmi_runtime_put(hdmi);
+
+ return 0;
+
+err_cec_uninit:
+ hdmi4_cec_uninit(&hdmi->core);
+err_pll_uninit:
+ hdmi_pll_uninit(&hdmi->pll);
+err_runtime_put:
+ hdmi_runtime_put(hdmi);
+ return r;
+}
+
+static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
+{
+ struct omap_hdmi *hdmi = dev_get_drvdata(dev);
+
+ dss_debugfs_remove_file(hdmi->debugfs);
+
+ if (hdmi->audio_pdev)
+ platform_device_unregister(hdmi->audio_pdev);
+
+ hdmi4_cec_uninit(&hdmi->core);
+ hdmi_pll_uninit(&hdmi->pll);
+}
+
+static const struct component_ops hdmi4_component_ops = {
+ .bind = hdmi4_bind,
+ .unbind = hdmi4_unbind,
+};
+
+/* -----------------------------------------------------------------------------
+ * Probe & Remove, Suspend & Resume
+ */
+
+static int hdmi4_init_output(struct omap_hdmi *hdmi)
+{
+ struct omap_dss_device *out = &hdmi->output;
+ int r;
+
+ hdmi4_bridge_init(hdmi);
+
+ out->dev = &hdmi->pdev->dev;
+ out->id = OMAP_DSS_OUTPUT_HDMI;
+ out->type = OMAP_DISPLAY_TYPE_HDMI;
+ out->name = "hdmi.0";
+ out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
+ out->of_port = 0;
+
+ r = omapdss_device_init_output(out, &hdmi->bridge);
+ if (r < 0) {
+ hdmi4_bridge_cleanup(hdmi);
+ return r;
+ }
+
+ omapdss_device_register(out);
+
+ return 0;
+}
+
+static void hdmi4_uninit_output(struct omap_hdmi *hdmi)
+{
+ struct omap_dss_device *out = &hdmi->output;
+
+ omapdss_device_unregister(out);
+ omapdss_device_cleanup_output(out);
+
+ hdmi4_bridge_cleanup(hdmi);
+}
+
+static int hdmi4_probe_of(struct omap_hdmi *hdmi)
+{
+ struct platform_device *pdev = hdmi->pdev;
+ struct device_node *node = pdev->dev.of_node;
+ struct device_node *ep;
+ int r;
+
+ ep = of_graph_get_endpoint_by_regs(node, 0, 0);
+ if (!ep)
+ return 0;
+
+ r = hdmi_parse_lanes_of(pdev, ep, &hdmi->phy);
+ of_node_put(ep);
+ return r;
+}
+
+static int hdmi4_probe(struct platform_device *pdev)
+{
+ struct omap_hdmi *hdmi;
+ int irq;
+ int r;
+
+ hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL);
+ if (!hdmi)
+ return -ENOMEM;
+
+ hdmi->pdev = pdev;
+
+ dev_set_drvdata(&pdev->dev, hdmi);
+
+ mutex_init(&hdmi->lock);
+ spin_lock_init(&hdmi->audio_playing_lock);
+
+ r = hdmi4_probe_of(hdmi);
+ if (r)
+ goto err_free;
+
+ r = hdmi_wp_init(pdev, &hdmi->wp, 4);
+ if (r)
+ goto err_free;
+
+ r = hdmi_phy_init(pdev, &hdmi->phy, 4);
+ if (r)
+ goto err_free;
+
+ r = hdmi4_core_init(pdev, &hdmi->core);
+ if (r)
+ goto err_free;
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ DSSERR("platform_get_irq failed\n");
+ r = -ENODEV;
+ goto err_free;
+ }
+
+ r = devm_request_threaded_irq(&pdev->dev, irq,
+ NULL, hdmi_irq_handler,
+ IRQF_ONESHOT, "OMAP HDMI", hdmi);
+ if (r) {
+ DSSERR("HDMI IRQ request failed\n");
+ goto err_free;
+ }
+
+ hdmi->vdda_reg = devm_regulator_get(&pdev->dev, "vdda");
+ if (IS_ERR(hdmi->vdda_reg)) {
+ r = PTR_ERR(hdmi->vdda_reg);
+ if (r != -EPROBE_DEFER)
+ DSSERR("can't get VDDA regulator\n");
+ goto err_free;
+ }
+
+ pm_runtime_enable(&pdev->dev);
+
+ r = hdmi4_init_output(hdmi);
+ if (r)
+ goto err_pm_disable;
+
+ r = component_add(&pdev->dev, &hdmi4_component_ops);
+ if (r)
+ goto err_uninit_output;
+
+ return 0;
+
+err_uninit_output:
+ hdmi4_uninit_output(hdmi);
+err_pm_disable:
+ pm_runtime_disable(&pdev->dev);
+err_free:
+ kfree(hdmi);
+ return r;
+}
+
+static int hdmi4_remove(struct platform_device *pdev)
+{
+ struct omap_hdmi *hdmi = platform_get_drvdata(pdev);
+
+ component_del(&pdev->dev, &hdmi4_component_ops);
+
+ hdmi4_uninit_output(hdmi);
+
+ pm_runtime_disable(&pdev->dev);
+
+ kfree(hdmi);
+ return 0;
+}
+
+static const struct of_device_id hdmi_of_match[] = {
+ { .compatible = "ti,omap4-hdmi", },
+ {},
+};
+
+struct platform_driver omapdss_hdmi4hw_driver = {
+ .probe = hdmi4_probe,
+ .remove = hdmi4_remove,
+ .driver = {
+ .name = "omapdss_hdmi",
+ .of_match_table = hdmi_of_match,
+ .suppress_bind_attrs = true,
+ },
+};