OMAPDSS: Add new HDMI Connector driver
Add HDMI Connector driver which uses the new DSS device model and DSS ops. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Tomi Valkeinen
parent
348077b154
commit
3cb07ee66b
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@ -18,4 +18,9 @@ config DISPLAY_CONNECTOR_DVI
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help
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Driver for a generic DVI connector.
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config DISPLAY_CONNECTOR_HDMI
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tristate "HDMI Connector"
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help
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Driver for a generic HDMI connector.
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endmenu
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@ -1,3 +1,4 @@
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obj-$(CONFIG_DISPLAY_ENCODER_TFP410) += encoder-tfp410.o
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obj-$(CONFIG_DISPLAY_ENCODER_TPD12S015) += encoder-tpd12s015.o
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obj-$(CONFIG_DISPLAY_CONNECTOR_DVI) += connector-dvi.o
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obj-$(CONFIG_DISPLAY_CONNECTOR_HDMI) += connector-hdmi.o
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@ -0,0 +1,375 @@
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/*
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* HDMI Connector driver
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*
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* Copyright (C) 2013 Texas Instruments
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* Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*/
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <drm/drm_edid.h>
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#include <video/omapdss.h>
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#include <video/omap-panel-data.h>
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static const struct omap_video_timings hdmic_default_timings = {
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.x_res = 640,
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.y_res = 480,
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.pixel_clock = 25175,
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.hsw = 96,
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.hfp = 16,
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.hbp = 48,
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.vsw = 2,
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.vfp = 11,
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.vbp = 31,
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.vsync_level = OMAPDSS_SIG_ACTIVE_LOW,
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.hsync_level = OMAPDSS_SIG_ACTIVE_LOW,
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.interlace = false,
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};
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struct panel_drv_data {
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struct omap_dss_device dssdev;
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struct omap_dss_device *in;
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struct device *dev;
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struct omap_video_timings timings;
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};
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#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev)
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static int hdmic_connect(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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int r;
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dev_dbg(ddata->dev, "connect\n");
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if (omapdss_device_is_connected(dssdev))
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return 0;
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r = in->ops.hdmi->connect(in, dssdev);
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if (r)
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return r;
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return 0;
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}
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static void hdmic_disconnect(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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dev_dbg(ddata->dev, "disconnect\n");
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if (!omapdss_device_is_connected(dssdev))
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return;
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in->ops.hdmi->disconnect(in, dssdev);
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}
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static int hdmic_enable(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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int r;
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dev_dbg(ddata->dev, "enable\n");
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if (!omapdss_device_is_connected(dssdev))
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return -ENODEV;
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if (omapdss_device_is_enabled(dssdev))
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return 0;
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in->ops.hdmi->set_timings(in, &ddata->timings);
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r = in->ops.hdmi->enable(in);
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if (r)
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return r;
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dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
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return r;
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}
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static void hdmic_disable(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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dev_dbg(ddata->dev, "disable\n");
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if (!omapdss_device_is_enabled(dssdev))
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return;
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in->ops.hdmi->disable(in);
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dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
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}
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static void hdmic_set_timings(struct omap_dss_device *dssdev,
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struct omap_video_timings *timings)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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ddata->timings = *timings;
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dssdev->panel.timings = *timings;
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in->ops.hdmi->set_timings(in, timings);
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}
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static void hdmic_get_timings(struct omap_dss_device *dssdev,
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struct omap_video_timings *timings)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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*timings = ddata->timings;
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}
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static int hdmic_check_timings(struct omap_dss_device *dssdev,
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struct omap_video_timings *timings)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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return in->ops.hdmi->check_timings(in, timings);
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}
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static int hdmic_read_edid(struct omap_dss_device *dssdev,
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u8 *edid, int len)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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return in->ops.hdmi->read_edid(in, edid, len);
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}
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static bool hdmic_detect(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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return in->ops.hdmi->detect(in);
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}
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static int hdmic_audio_enable(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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int r;
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/* enable audio only if the display is active */
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if (!omapdss_device_is_enabled(dssdev))
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return -EPERM;
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r = in->ops.hdmi->audio_enable(in);
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if (r)
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return r;
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dssdev->audio_state = OMAP_DSS_AUDIO_ENABLED;
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return 0;
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}
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static void hdmic_audio_disable(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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in->ops.hdmi->audio_disable(in);
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dssdev->audio_state = OMAP_DSS_AUDIO_DISABLED;
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}
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static int hdmic_audio_start(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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int r;
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/*
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* No need to check the panel state. It was checked when trasitioning
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* to AUDIO_ENABLED.
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*/
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if (dssdev->audio_state != OMAP_DSS_AUDIO_ENABLED)
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return -EPERM;
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r = in->ops.hdmi->audio_start(in);
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if (r)
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return r;
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dssdev->audio_state = OMAP_DSS_AUDIO_PLAYING;
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return 0;
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}
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static void hdmic_audio_stop(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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in->ops.hdmi->audio_stop(in);
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dssdev->audio_state = OMAP_DSS_AUDIO_ENABLED;
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}
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static bool hdmic_audio_supported(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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if (!omapdss_device_is_enabled(dssdev))
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return false;
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return in->ops.hdmi->audio_supported(in);
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}
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static int hdmic_audio_config(struct omap_dss_device *dssdev,
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struct omap_dss_audio *audio)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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int r;
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/* config audio only if the display is active */
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if (!omapdss_device_is_enabled(dssdev))
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return -EPERM;
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r = in->ops.hdmi->audio_config(in, audio);
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if (r)
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return r;
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dssdev->audio_state = OMAP_DSS_AUDIO_CONFIGURED;
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return 0;
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}
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static struct omap_dss_driver hdmic_driver = {
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.connect = hdmic_connect,
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.disconnect = hdmic_disconnect,
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.enable = hdmic_enable,
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.disable = hdmic_disable,
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.set_timings = hdmic_set_timings,
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.get_timings = hdmic_get_timings,
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.check_timings = hdmic_check_timings,
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.get_resolution = omapdss_default_get_resolution,
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.read_edid = hdmic_read_edid,
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.detect = hdmic_detect,
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.audio_enable = hdmic_audio_enable,
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.audio_disable = hdmic_audio_disable,
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.audio_start = hdmic_audio_start,
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.audio_stop = hdmic_audio_stop,
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.audio_supported = hdmic_audio_supported,
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.audio_config = hdmic_audio_config,
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};
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static int hdmic_probe_pdata(struct platform_device *pdev)
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{
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struct panel_drv_data *ddata = platform_get_drvdata(pdev);
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struct connector_hdmi_platform_data *pdata;
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struct omap_dss_device *in, *dssdev;
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pdata = dev_get_platdata(&pdev->dev);
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in = omap_dss_find_output(pdata->source);
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if (in == NULL) {
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dev_err(&pdev->dev, "Failed to find video source\n");
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return -ENODEV;
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}
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ddata->in = in;
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dssdev = &ddata->dssdev;
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dssdev->name = pdata->name;
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return 0;
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}
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static int hdmic_probe(struct platform_device *pdev)
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{
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struct panel_drv_data *ddata;
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struct omap_dss_device *dssdev;
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int r;
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ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
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if (!ddata)
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return -ENOMEM;
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platform_set_drvdata(pdev, ddata);
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ddata->dev = &pdev->dev;
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if (dev_get_platdata(&pdev->dev)) {
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r = hdmic_probe_pdata(pdev);
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if (r)
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return r;
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} else {
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return -ENODEV;
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}
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ddata->timings = hdmic_default_timings;
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dssdev = &ddata->dssdev;
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dssdev->driver = &hdmic_driver;
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dssdev->dev = &pdev->dev;
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dssdev->type = OMAP_DISPLAY_TYPE_HDMI;
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dssdev->owner = THIS_MODULE;
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dssdev->panel.timings = hdmic_default_timings;
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r = omapdss_register_display(dssdev);
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if (r) {
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dev_err(&pdev->dev, "Failed to register panel\n");
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goto err_reg;
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}
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return 0;
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err_reg:
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omap_dss_put_device(ddata->in);
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return r;
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}
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static int __exit hdmic_remove(struct platform_device *pdev)
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{
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struct panel_drv_data *ddata = platform_get_drvdata(pdev);
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struct omap_dss_device *dssdev = &ddata->dssdev;
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struct omap_dss_device *in = ddata->in;
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omapdss_unregister_display(&ddata->dssdev);
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hdmic_disable(dssdev);
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hdmic_disconnect(dssdev);
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omap_dss_put_device(in);
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return 0;
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}
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static struct platform_driver hdmi_connector_driver = {
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.probe = hdmic_probe,
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.remove = __exit_p(hdmic_remove),
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.driver = {
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.name = "connector-hdmi",
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.owner = THIS_MODULE,
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},
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};
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module_platform_driver(hdmi_connector_driver);
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MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
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MODULE_DESCRIPTION("HDMI Connector driver");
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MODULE_LICENSE("GPL");
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@ -188,4 +188,14 @@ struct connector_dvi_platform_data {
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int i2c_bus_num;
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};
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/**
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* connector_hdmi platform data
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* @name: name for this display entity
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* @source: name of the display entity used as a video source
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*/
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struct connector_hdmi_platform_data {
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const char *name;
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const char *source;
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};
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#endif /* __OMAP_PANEL_DATA_H */
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