--- /dev/null
+/*
+ * HDMI Connector driver
+ *
+ * Copyright (C) 2013 Texas Instruments
+ * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <drm/drm_edid.h>
+
+#include <video/omapdss.h>
+#include <video/omap-panel-data.h>
+
+static const struct omap_video_timings hdmic_default_timings = {
+ .x_res = 640,
+ .y_res = 480,
+ .pixel_clock = 25175,
+ .hsw = 96,
+ .hfp = 16,
+ .hbp = 48,
+ .vsw = 2,
+ .vfp = 11,
+ .vbp = 31,
+
+ .vsync_level = OMAPDSS_SIG_ACTIVE_LOW,
+ .hsync_level = OMAPDSS_SIG_ACTIVE_LOW,
+
+ .interlace = false,
+};
+
+struct panel_drv_data {
+ struct omap_dss_device dssdev;
+ struct omap_dss_device *in;
+
+ struct device *dev;
+
+ struct omap_video_timings timings;
+};
+
+#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev)
+
+static int hdmic_connect(struct omap_dss_device *dssdev)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+ int r;
+
+ dev_dbg(ddata->dev, "connect\n");
+
+ if (omapdss_device_is_connected(dssdev))
+ return 0;
+
+ r = in->ops.hdmi->connect(in, dssdev);
+ if (r)
+ return r;
+
+ return 0;
+}
+
+static void hdmic_disconnect(struct omap_dss_device *dssdev)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+
+ dev_dbg(ddata->dev, "disconnect\n");
+
+ if (!omapdss_device_is_connected(dssdev))
+ return;
+
+ in->ops.hdmi->disconnect(in, dssdev);
+}
+
+static int hdmic_enable(struct omap_dss_device *dssdev)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+ int r;
+
+ dev_dbg(ddata->dev, "enable\n");
+
+ if (!omapdss_device_is_connected(dssdev))
+ return -ENODEV;
+
+ if (omapdss_device_is_enabled(dssdev))
+ return 0;
+
+ in->ops.hdmi->set_timings(in, &ddata->timings);
+
+ r = in->ops.hdmi->enable(in);
+ if (r)
+ return r;
+
+ dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+
+ return r;
+}
+
+static void hdmic_disable(struct omap_dss_device *dssdev)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+
+ dev_dbg(ddata->dev, "disable\n");
+
+ if (!omapdss_device_is_enabled(dssdev))
+ return;
+
+ in->ops.hdmi->disable(in);
+
+ dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
+}
+
+static void hdmic_set_timings(struct omap_dss_device *dssdev,
+ struct omap_video_timings *timings)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+
+ ddata->timings = *timings;
+ dssdev->panel.timings = *timings;
+
+ in->ops.hdmi->set_timings(in, timings);
+}
+
+static void hdmic_get_timings(struct omap_dss_device *dssdev,
+ struct omap_video_timings *timings)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+
+ *timings = ddata->timings;
+}
+
+static int hdmic_check_timings(struct omap_dss_device *dssdev,
+ struct omap_video_timings *timings)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+
+ return in->ops.hdmi->check_timings(in, timings);
+}
+
+static int hdmic_read_edid(struct omap_dss_device *dssdev,
+ u8 *edid, int len)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+
+ return in->ops.hdmi->read_edid(in, edid, len);
+}
+
+static bool hdmic_detect(struct omap_dss_device *dssdev)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+
+ return in->ops.hdmi->detect(in);
+}
+
+static int hdmic_audio_enable(struct omap_dss_device *dssdev)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+ int r;
+
+ /* enable audio only if the display is active */
+ if (!omapdss_device_is_enabled(dssdev))
+ return -EPERM;
+
+ r = in->ops.hdmi->audio_enable(in);
+ if (r)
+ return r;
+
+ dssdev->audio_state = OMAP_DSS_AUDIO_ENABLED;
+
+ return 0;
+}
+
+static void hdmic_audio_disable(struct omap_dss_device *dssdev)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+
+ in->ops.hdmi->audio_disable(in);
+
+ dssdev->audio_state = OMAP_DSS_AUDIO_DISABLED;
+}
+
+static int hdmic_audio_start(struct omap_dss_device *dssdev)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+ int r;
+
+ /*
+ * No need to check the panel state. It was checked when trasitioning
+ * to AUDIO_ENABLED.
+ */
+ if (dssdev->audio_state != OMAP_DSS_AUDIO_ENABLED)
+ return -EPERM;
+
+ r = in->ops.hdmi->audio_start(in);
+ if (r)
+ return r;
+
+ dssdev->audio_state = OMAP_DSS_AUDIO_PLAYING;
+
+ return 0;
+}
+
+static void hdmic_audio_stop(struct omap_dss_device *dssdev)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+
+ in->ops.hdmi->audio_stop(in);
+
+ dssdev->audio_state = OMAP_DSS_AUDIO_ENABLED;
+}
+
+static bool hdmic_audio_supported(struct omap_dss_device *dssdev)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+
+ if (!omapdss_device_is_enabled(dssdev))
+ return false;
+
+ return in->ops.hdmi->audio_supported(in);
+}
+
+static int hdmic_audio_config(struct omap_dss_device *dssdev,
+ struct omap_dss_audio *audio)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+ int r;
+
+ /* config audio only if the display is active */
+ if (!omapdss_device_is_enabled(dssdev))
+ return -EPERM;
+
+ r = in->ops.hdmi->audio_config(in, audio);
+ if (r)
+ return r;
+
+ dssdev->audio_state = OMAP_DSS_AUDIO_CONFIGURED;
+
+ return 0;
+}
+
+static struct omap_dss_driver hdmic_driver = {
+ .connect = hdmic_connect,
+ .disconnect = hdmic_disconnect,
+
+ .enable = hdmic_enable,
+ .disable = hdmic_disable,
+
+ .set_timings = hdmic_set_timings,
+ .get_timings = hdmic_get_timings,
+ .check_timings = hdmic_check_timings,
+
+ .get_resolution = omapdss_default_get_resolution,
+
+ .read_edid = hdmic_read_edid,
+ .detect = hdmic_detect,
+
+ .audio_enable = hdmic_audio_enable,
+ .audio_disable = hdmic_audio_disable,
+ .audio_start = hdmic_audio_start,
+ .audio_stop = hdmic_audio_stop,
+ .audio_supported = hdmic_audio_supported,
+ .audio_config = hdmic_audio_config,
+};
+
+static int hdmic_probe_pdata(struct platform_device *pdev)
+{
+ struct panel_drv_data *ddata = platform_get_drvdata(pdev);
+ struct connector_hdmi_platform_data *pdata;
+ struct omap_dss_device *in, *dssdev;
+
+ pdata = dev_get_platdata(&pdev->dev);
+
+ in = omap_dss_find_output(pdata->source);
+ if (in == NULL) {
+ dev_err(&pdev->dev, "Failed to find video source\n");
+ return -ENODEV;
+ }
+
+ ddata->in = in;
+
+ dssdev = &ddata->dssdev;
+ dssdev->name = pdata->name;
+
+ return 0;
+}
+
+static int hdmic_probe(struct platform_device *pdev)
+{
+ struct panel_drv_data *ddata;
+ struct omap_dss_device *dssdev;
+ int r;
+
+ ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
+ if (!ddata)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, ddata);
+ ddata->dev = &pdev->dev;
+
+ if (dev_get_platdata(&pdev->dev)) {
+ r = hdmic_probe_pdata(pdev);
+ if (r)
+ return r;
+ } else {
+ return -ENODEV;
+ }
+
+ ddata->timings = hdmic_default_timings;
+
+ dssdev = &ddata->dssdev;
+ dssdev->driver = &hdmic_driver;
+ dssdev->dev = &pdev->dev;
+ dssdev->type = OMAP_DISPLAY_TYPE_HDMI;
+ dssdev->owner = THIS_MODULE;
+ dssdev->panel.timings = hdmic_default_timings;
+
+ r = omapdss_register_display(dssdev);
+ if (r) {
+ dev_err(&pdev->dev, "Failed to register panel\n");
+ goto err_reg;
+ }
+
+ return 0;
+err_reg:
+ omap_dss_put_device(ddata->in);
+ return r;
+}
+
+static int __exit hdmic_remove(struct platform_device *pdev)
+{
+ struct panel_drv_data *ddata = platform_get_drvdata(pdev);
+ struct omap_dss_device *dssdev = &ddata->dssdev;
+ struct omap_dss_device *in = ddata->in;
+
+ omapdss_unregister_display(&ddata->dssdev);
+
+ hdmic_disable(dssdev);
+ hdmic_disconnect(dssdev);
+
+ omap_dss_put_device(in);
+
+ return 0;
+}
+
+static struct platform_driver hdmi_connector_driver = {
+ .probe = hdmic_probe,
+ .remove = __exit_p(hdmic_remove),
+ .driver = {
+ .name = "connector-hdmi",
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(hdmi_connector_driver);
+
+MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
+MODULE_DESCRIPTION("HDMI Connector driver");
+MODULE_LICENSE("GPL");
projects / karo-tx-linux.git / commitdiff