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authorMythri P K <mythripk@ti.com>2011-03-10 15:48:48 +0530
committerTomi Valkeinen <tomi.valkeinen@ti.com>2011-03-16 11:45:49 +0530
commit70be83235ea2815f6c2a5fd45753de406be6c6aa (patch)
tree9e98be5b70ccc3eba2530bb1f9070fdeb73cb17a /drivers/video
parentc3198a5e83121d6e3d01816f15164f158f4301d8 (diff)
downloadop-kernel-dev-70be83235ea2815f6c2a5fd45753de406be6c6aa.zip
op-kernel-dev-70be83235ea2815f6c2a5fd45753de406be6c6aa.tar.gz
OMAP4: DSS2: HDMI: HDMI panel driver addition in the DSS
The panel driver(hdmi_omap4_panel.c) in omap2/dss acts as a controller to manage the enable and disable requests and synchronize audio and video. Signed-off-by: Mythri P K <mythripk@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/omap2/dss/dss.h2
-rw-r--r--drivers/video/omap2/dss/hdmi_omap4_panel.c222
2 files changed, 224 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/dss.h b/drivers/video/omap2/dss/dss.h
index 91ed3fa..c2f582bb19 100644
--- a/drivers/video/omap2/dss/dss.h
+++ b/drivers/video/omap2/dss/dss.h
@@ -477,6 +477,8 @@ void omapdss_hdmi_display_disable(struct omap_dss_device *dssdev);
void omapdss_hdmi_display_set_timing(struct omap_dss_device *dssdev);
int omapdss_hdmi_display_check_timing(struct omap_dss_device *dssdev,
struct omap_video_timings *timings);
+int hdmi_panel_init(void);
+void hdmi_panel_exit(void);
/* RFBI */
#ifdef CONFIG_OMAP2_DSS_RFBI
diff --git a/drivers/video/omap2/dss/hdmi_omap4_panel.c b/drivers/video/omap2/dss/hdmi_omap4_panel.c
new file mode 100644
index 0000000..ffb5de9
--- /dev/null
+++ b/drivers/video/omap2/dss/hdmi_omap4_panel.c
@@ -0,0 +1,222 @@
+/*
+ * hdmi_omap4_panel.c
+ *
+ * HDMI library support functions for TI OMAP4 processors.
+ *
+ * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/
+ * Authors: Mythri P k <mythripk@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.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/kernel.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/mutex.h>
+#include <linux/module.h>
+#include <plat/display.h>
+
+#include "dss.h"
+
+static struct {
+ struct mutex hdmi_lock;
+} hdmi;
+
+
+static int hdmi_panel_probe(struct omap_dss_device *dssdev)
+{
+ DSSDBG("ENTER hdmi_panel_probe\n");
+
+ dssdev->panel.config = OMAP_DSS_LCD_TFT |
+ OMAP_DSS_LCD_IVS | OMAP_DSS_LCD_IHS;
+
+ /*
+ * Initialize the timings to 640 * 480
+ * This is only for framebuffer update not for TV timing setting
+ * Setting TV timing will be done only on enable
+ */
+ dssdev->panel.timings.x_res = 640;
+ dssdev->panel.timings.y_res = 480;
+
+ DSSDBG("hdmi_panel_probe x_res= %d y_res = %d\n",
+ dssdev->panel.timings.x_res,
+ dssdev->panel.timings.y_res);
+ return 0;
+}
+
+static void hdmi_panel_remove(struct omap_dss_device *dssdev)
+{
+
+}
+
+static int hdmi_panel_enable(struct omap_dss_device *dssdev)
+{
+ int r = 0;
+ DSSDBG("ENTER hdmi_panel_enable\n");
+
+ mutex_lock(&hdmi.hdmi_lock);
+
+ if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED) {
+ r = -EINVAL;
+ goto err;
+ }
+
+ r = omapdss_hdmi_display_enable(dssdev);
+ if (r) {
+ DSSERR("failed to power on\n");
+ goto err;
+ }
+
+ dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+
+err:
+ mutex_unlock(&hdmi.hdmi_lock);
+
+ return r;
+}
+
+static void hdmi_panel_disable(struct omap_dss_device *dssdev)
+{
+ mutex_lock(&hdmi.hdmi_lock);
+
+ if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
+ omapdss_hdmi_display_disable(dssdev);
+
+ dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
+
+ mutex_unlock(&hdmi.hdmi_lock);
+}
+
+static int hdmi_panel_suspend(struct omap_dss_device *dssdev)
+{
+ int r = 0;
+
+ mutex_lock(&hdmi.hdmi_lock);
+
+ if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) {
+ r = -EINVAL;
+ goto err;
+ }
+
+ dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
+
+ omapdss_hdmi_display_disable(dssdev);
+
+err:
+ mutex_unlock(&hdmi.hdmi_lock);
+
+ return r;
+}
+
+static int hdmi_panel_resume(struct omap_dss_device *dssdev)
+{
+ int r = 0;
+
+ mutex_lock(&hdmi.hdmi_lock);
+
+ if (dssdev->state != OMAP_DSS_DISPLAY_SUSPENDED) {
+ r = -EINVAL;
+ goto err;
+ }
+
+ r = omapdss_hdmi_display_enable(dssdev);
+ if (r) {
+ DSSERR("failed to power on\n");
+ goto err;
+ }
+
+ dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+
+err:
+ mutex_unlock(&hdmi.hdmi_lock);
+
+ return r;
+}
+
+static void hdmi_get_timings(struct omap_dss_device *dssdev,
+ struct omap_video_timings *timings)
+{
+ mutex_lock(&hdmi.hdmi_lock);
+
+ *timings = dssdev->panel.timings;
+
+ mutex_unlock(&hdmi.hdmi_lock);
+}
+
+static void hdmi_set_timings(struct omap_dss_device *dssdev,
+ struct omap_video_timings *timings)
+{
+ DSSDBG("hdmi_set_timings\n");
+
+ mutex_lock(&hdmi.hdmi_lock);
+
+ dssdev->panel.timings = *timings;
+
+ if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
+ /* turn the hdmi off and on to get new timings to use */
+ omapdss_hdmi_display_disable(dssdev);
+ omapdss_hdmi_display_set_timing(dssdev);
+ }
+
+ mutex_unlock(&hdmi.hdmi_lock);
+}
+
+static int hdmi_check_timings(struct omap_dss_device *dssdev,
+ struct omap_video_timings *timings)
+{
+ int r = 0;
+
+ DSSDBG("hdmi_check_timings\n");
+
+ mutex_lock(&hdmi.hdmi_lock);
+
+ r = omapdss_hdmi_display_check_timing(dssdev, timings);
+ if (r) {
+ DSSERR("Timing cannot be applied\n");
+ goto err;
+ }
+err:
+ mutex_unlock(&hdmi.hdmi_lock);
+ return r;
+}
+
+static struct omap_dss_driver hdmi_driver = {
+ .probe = hdmi_panel_probe,
+ .remove = hdmi_panel_remove,
+ .enable = hdmi_panel_enable,
+ .disable = hdmi_panel_disable,
+ .suspend = hdmi_panel_suspend,
+ .resume = hdmi_panel_resume,
+ .get_timings = hdmi_get_timings,
+ .set_timings = hdmi_set_timings,
+ .check_timings = hdmi_check_timings,
+ .driver = {
+ .name = "hdmi_panel",
+ .owner = THIS_MODULE,
+ },
+};
+
+int hdmi_panel_init(void)
+{
+ mutex_init(&hdmi.hdmi_lock);
+
+ omap_dss_register_driver(&hdmi_driver);
+
+ return 0;
+}
+
+void hdmi_panel_exit(void)
+{
+ omap_dss_unregister_driver(&hdmi_driver);
+
+}
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