File 0004-displays-added-panel-for-medistream.patch of Package kernel-adaptation-dm3730

From 50a03871e28b8363a15877bee01db43bec53da10 Mon Sep 17 00:00:00 2001
From: MediStream-Devel-VM <info@berlinux-solutions.de>
Date: Mon, 6 Aug 2012 11:15:19 +0200
Subject: [PATCH 4/9] displays: -added panel for medistream

---
 drivers/video/omap2/displays/Kconfig            |    7 +
 drivers/video/omap2/displays/Makefile           |    1 +
 drivers/video/omap2/displays/panel-medistream.c |  161 +++++++++++++++++++++++
 3 files changed, 169 insertions(+), 0 deletions(-)
 create mode 100644 drivers/video/omap2/displays/panel-medistream.c

diff --git a/drivers/video/omap2/displays/Kconfig b/drivers/video/omap2/displays/Kconfig
index 408a992..8a4cd82 100644
--- a/drivers/video/omap2/displays/Kconfig
+++ b/drivers/video/omap2/displays/Kconfig
@@ -72,4 +72,11 @@ config PANEL_N8X0
 	depends on BACKLIGHT_CLASS_DEVICE
 	help
 	  This is the LCD panel used on Nokia N8x0
+
+config PANEL_MEDISTREAM
+	tristate "Bewatec MediStream Panel"
+	depends on OMAP2_DSS_DSI
+	help
+	  Bewatec MediStream Panel
+
 endmenu
diff --git a/drivers/video/omap2/displays/Makefile b/drivers/video/omap2/displays/Makefile
index fbfafc6..0fc972c 100644
--- a/drivers/video/omap2/displays/Makefile
+++ b/drivers/video/omap2/displays/Makefile
@@ -9,3 +9,4 @@ obj-$(CONFIG_PANEL_PICODLP) +=  panel-picodlp.o
 obj-$(CONFIG_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o
 obj-$(CONFIG_PANEL_ACX565AKM) += panel-acx565akm.o
 obj-$(CONFIG_PANEL_N8X0) += panel-n8x0.o
+obj-$(CONFIG_PANEL_MEDISTREAM) += panel-medistream.o
diff --git a/drivers/video/omap2/displays/panel-medistream.c b/drivers/video/omap2/displays/panel-medistream.c
new file mode 100644
index 0000000..a75dcdd
--- /dev/null
+++ b/drivers/video/omap2/displays/panel-medistream.c
@@ -0,0 +1,161 @@
+/*
+ * LCD panel driver for Bewatec MediStream Panel
+ *
+ * Copyright (C) 2008 Nokia Corporation
+ * Author: Tomi Valkeinen <tomi.valkeinen@nokia.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/module.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/backlight.h>
+#include <linux/fb.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+
+#include <video/omapdss.h>
+
+struct medistream_data {
+	struct backlight_device *bl;
+};
+
+static struct omap_video_timings medistream_timings = {
+	.x_res = 1024,
+	.y_res = 600,
+
+	.pixel_clock	= 43970,
+
+	.hsw		= 49,
+	.hfp		= 38,
+	.hbp		= 39,
+
+	.vsw		= 3,
+	.vfp		= 13,
+	.vbp		= 29,
+};
+
+static int medistream_panel_probe(struct omap_dss_device *dssdev)
+{
+	dssdev->panel.config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
+		OMAP_DSS_LCD_IHS;
+	dssdev->panel.acb = 0x28;
+	dssdev->panel.timings = medistream_timings;
+
+	return 0;
+}
+
+static void __exit medistream_panel_remove(struct omap_dss_device *dssdev)
+{
+}
+
+static int medistream_power_on(struct omap_dss_device *dssdev)
+{
+	int r = 0;
+
+	if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
+		return 0;
+
+	r = omapdss_dpi_display_enable(dssdev);
+	if (r)
+		goto err0;
+
+	/* wait couple of vsyncs until enabling the LCD */
+	msleep(50);
+
+	if (dssdev->platform_enable) {
+		r = dssdev->platform_enable(dssdev);
+		if (r)
+			goto err1;
+	}
+
+	return 0;
+err1:
+	omapdss_dpi_display_disable(dssdev);
+err0:
+	return r;
+}
+
+static void medistream_power_off(struct omap_dss_device *dssdev)
+{
+	if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
+		return;
+
+	if (dssdev->platform_disable)
+		dssdev->platform_disable(dssdev);
+
+	/* wait at least 5 vsyncs after disabling the LCD */
+
+	msleep(100);
+
+	omapdss_dpi_display_disable(dssdev);
+}
+
+static int medistream_panel_enable(struct omap_dss_device *dssdev)
+{
+	int r;
+	r = medistream_power_on(dssdev);
+	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+	return r;
+}
+
+static void medistream_panel_disable(struct omap_dss_device *dssdev)
+{
+	medistream_power_off(dssdev);
+	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
+}
+
+static int medistream_panel_suspend(struct omap_dss_device *dssdev)
+{
+	medistream_power_off(dssdev);
+	dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
+	return 0;
+}
+
+static int medistream_panel_resume(struct omap_dss_device *dssdev)
+{
+	int r;
+	r = medistream_power_on(dssdev);
+	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+	return r;
+}
+
+static struct omap_dss_driver medistream_driver = {
+	.probe		= medistream_panel_probe,
+	.remove		= __exit_p(medistream_panel_remove),
+
+	.enable		= medistream_panel_enable,
+	.disable	= medistream_panel_disable,
+	.suspend	= medistream_panel_suspend,
+	.resume		= medistream_panel_resume,
+
+	.driver         = {
+		.name   = "Medistream Panel",
+		.owner  = THIS_MODULE,
+	},
+};
+
+static int __init medistream_panel_drv_init(void)
+{
+	return omap_dss_register_driver(&medistream_driver);
+}
+
+static void __exit medistream_panel_drv_exit(void)
+{
+	omap_dss_unregister_driver(&medistream_driver);
+}
+
+module_init(medistream_panel_drv_init);
+module_exit(medistream_panel_drv_exit);
+MODULE_LICENSE("GPL");
-- 
1.7.5.4