OMAP: DSS2: Add generic and Sharp panel drivers

Add Generic panel (user for DVI output) and Sharp LS037V7DW01 LCD panel.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>

drivers/video/omap2/Kconfig

@@ -6,3 +6,4 @@ config OMAP2_VRFB
 
 source "drivers/video/omap2/dss/Kconfig"
 source "drivers/video/omap2/omapfb/Kconfig"
+source "drivers/video/omap2/displays/Kconfig"

drivers/video/omap2/Makefile

@@ -3,3 +3,4 @@ obj-$(CONFIG_OMAP2_VRFB) += vrfb.o
 
 obj-y += dss/
 obj-y += omapfb/
+obj-y += displays/

drivers/video/omap2/displays/Kconfig

+menu "OMAP2/3 Display Device Drivers"
+        depends on OMAP2_DSS
+
+config PANEL_GENERIC
+        tristate "Generic Panel"
+        help
+	  Generic panel driver.
+	  Used for DVI output for Beagle and OMAP3 SDP.
+
+config PANEL_SHARP_LS037V7DW01
+        tristate "Sharp LS037V7DW01 LCD Panel"
+        depends on OMAP2_DSS
+        help
+          LCD Panel used in TI's SDP3430 and EVM boards
+
+endmenu

drivers/video/omap2/displays/Makefile

+obj-$(CONFIG_PANEL_GENERIC) += panel-generic.o
+obj-$(CONFIG_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o

drivers/video/omap2/displays/panel-generic.c

+/*
+ * Generic panel support
+ *
+ * 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 <plat/display.h>
+
+static struct omap_video_timings generic_panel_timings = {
+	/* 640 x 480 @ 60 Hz  Reduced blanking VESA CVT 0.31M3-R */
+	.x_res		= 640,
+	.y_res		= 480,
+	.pixel_clock	= 23500,
+	.hfp		= 48,
+	.hsw		= 32,
+	.hbp		= 80,
+	.vfp		= 3,
+	.vsw		= 4,
+	.vbp		= 7,
+};
+
+static int generic_panel_probe(struct omap_dss_device *dssdev)
+{
+	dssdev->panel.config = OMAP_DSS_LCD_TFT;
+	dssdev->panel.timings = generic_panel_timings;
+
+	return 0;
+}
+
+static void generic_panel_remove(struct omap_dss_device *dssdev)
+{
+}
+
+static int generic_panel_enable(struct omap_dss_device *dssdev)
+{
+	int r = 0;
+
+	if (dssdev->platform_enable)
+		r = dssdev->platform_enable(dssdev);
+
+	return r;
+}
+
+static void generic_panel_disable(struct omap_dss_device *dssdev)
+{
+	if (dssdev->platform_disable)
+		dssdev->platform_disable(dssdev);
+}
+
+static int generic_panel_suspend(struct omap_dss_device *dssdev)
+{
+	generic_panel_disable(dssdev);
+	return 0;
+}
+
+static int generic_panel_resume(struct omap_dss_device *dssdev)
+{
+	return generic_panel_enable(dssdev);
+}
+
+static struct omap_dss_driver generic_driver = {
+	.probe		= generic_panel_probe,
+	.remove		= generic_panel_remove,
+
+	.enable		= generic_panel_enable,
+	.disable	= generic_panel_disable,
+	.suspend	= generic_panel_suspend,
+	.resume		= generic_panel_resume,
+
+	.driver         = {
+		.name   = "generic_panel",
+		.owner  = THIS_MODULE,
+	},
+};
+
+static int __init generic_panel_drv_init(void)
+{
+	return omap_dss_register_driver(&generic_driver);
+}
+
+static void __exit generic_panel_drv_exit(void)
+{
+	omap_dss_unregister_driver(&generic_driver);
+}
+
+module_init(generic_panel_drv_init);
+module_exit(generic_panel_drv_exit);
+MODULE_LICENSE("GPL");

drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c

+/*
+ * LCD panel driver for Sharp LS037V7DW01
+ *
+ * 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/regulator/consumer.h>
+#include <linux/err.h>
+
+#include <plat/display.h>
+
+struct sharp_data {
+	/* XXX This regulator should actually be in SDP board file, not here,
+	 * as it doesn't actually power the LCD, but something else that
+	 * affects the output to LCD (I think. Somebody clarify). It doesn't do
+	 * harm here, as SDP is the only board using this currently */
+	struct regulator *vdvi_reg;
+};
+
+static struct omap_video_timings sharp_ls_timings = {
+	.x_res = 480,
+	.y_res = 640,
+
+	.pixel_clock	= 19200,
+
+	.hsw		= 2,
+	.hfp		= 1,
+	.hbp		= 28,
+
+	.vsw		= 1,
+	.vfp		= 1,
+	.vbp		= 1,
+};
+
+static int sharp_ls_panel_probe(struct omap_dss_device *dssdev)
+{
+	struct sharp_data *sd;
+
+	dssdev->panel.config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
+		OMAP_DSS_LCD_IHS;
+	dssdev->panel.acb = 0x28;
+	dssdev->panel.timings = sharp_ls_timings;
+
+	sd = kzalloc(sizeof(*sd), GFP_KERNEL);
+	if (!sd)
+		return -ENOMEM;
+
+	dev_set_drvdata(&dssdev->dev, sd);
+
+	sd->vdvi_reg = regulator_get(&dssdev->dev, "vdvi");
+	if (IS_ERR(sd->vdvi_reg)) {
+		kfree(sd);
+		pr_err("failed to get VDVI regulator\n");
+		return PTR_ERR(sd->vdvi_reg);
+	}
+
+	return 0;
+}
+
+static void sharp_ls_panel_remove(struct omap_dss_device *dssdev)
+{
+	struct sharp_data *sd = dev_get_drvdata(&dssdev->dev);
+
+	regulator_put(sd->vdvi_reg);
+
+	kfree(sd);
+}
+
+static int sharp_ls_panel_enable(struct omap_dss_device *dssdev)
+{
+	struct sharp_data *sd = dev_get_drvdata(&dssdev->dev);
+	int r = 0;
+
+	/* wait couple of vsyncs until enabling the LCD */
+	msleep(50);
+
+	regulator_enable(sd->vdvi_reg);
+
+	if (dssdev->platform_enable)
+		r = dssdev->platform_enable(dssdev);
+
+	return r;
+}
+
+static void sharp_ls_panel_disable(struct omap_dss_device *dssdev)
+{
+	struct sharp_data *sd = dev_get_drvdata(&dssdev->dev);
+
+	if (dssdev->platform_disable)
+		dssdev->platform_disable(dssdev);
+
+	regulator_disable(sd->vdvi_reg);
+
+	/* wait at least 5 vsyncs after disabling the LCD */
+
+	msleep(100);
+}
+
+static int sharp_ls_panel_suspend(struct omap_dss_device *dssdev)
+{
+	sharp_ls_panel_disable(dssdev);
+	return 0;
+}
+
+static int sharp_ls_panel_resume(struct omap_dss_device *dssdev)
+{
+	return sharp_ls_panel_enable(dssdev);
+}
+
+static struct omap_dss_driver sharp_ls_driver = {
+	.probe		= sharp_ls_panel_probe,
+	.remove		= sharp_ls_panel_remove,
+
+	.enable		= sharp_ls_panel_enable,
+	.disable	= sharp_ls_panel_disable,
+	.suspend	= sharp_ls_panel_suspend,
+	.resume		= sharp_ls_panel_resume,
+
+	.driver         = {
+		.name   = "sharp_ls_panel",
+		.owner  = THIS_MODULE,
+	},
+};
+
+static int __init sharp_ls_panel_drv_init(void)
+{
+	return omap_dss_register_driver(&sharp_ls_driver);
+}
+
+static void __exit sharp_ls_panel_drv_exit(void)
+{
+	omap_dss_unregister_driver(&sharp_ls_driver);
+}
+
+module_init(sharp_ls_panel_drv_init);
+module_exit(sharp_ls_panel_drv_exit);
+MODULE_LICENSE("GPL");