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>

4 files changed, 275 insertions, 0 deletions

diff --git a/drivers/video/omap2/displays/Kconfig b/drivers/video/omap2/displays/Kconfig
new file mode 100644
index 00000000000..2a39bfeca11
--- /dev/null
+++ b/drivers/video/omap2/displays/Kconfig
@@ -0,0 +1,16 @@
+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
diff --git a/drivers/video/omap2/displays/Makefile b/drivers/video/omap2/displays/Makefile
new file mode 100644
index 00000000000..12dd37c227d
--- /dev/null
+++ b/drivers/video/omap2/displays/Makefile
@@ -0,0 +1,2 @@
+obj-$(CONFIG_PANEL_GENERIC) += panel-generic.o
+obj-$(CONFIG_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o
diff --git a/drivers/video/omap2/displays/panel-generic.c b/drivers/video/omap2/displays/panel-generic.c
new file mode 100644
index 00000000000..eb48d1afd80
--- /dev/null
+++ b/drivers/video/omap2/displays/panel-generic.c
@@ -0,0 +1,104 @@
+/*
+ * 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");
diff --git a/drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c b/drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c
new file mode 100644
index 00000000000..bbe880bbe79
--- /dev/null
+++ b/drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c
@@ -0,0 +1,153 @@
+/*
+ * 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");