Initial file dump from open source releaseHEADmaster

1 files changed, 198 insertions, 0 deletions

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 00000000..74cb0eb4
--- /dev/null
+++ b/drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c
@@ -0,0 +1,198 @@
+/*
+ * 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/fb.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/gpio.h>
+
+#include <video/omapdss.h>
+#include <video/omap-panel-data.h>
+
+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,
+
+	.vsync_level	= OMAPDSS_SIG_ACTIVE_LOW,
+	.hsync_level	= OMAPDSS_SIG_ACTIVE_LOW,
+	.data_pclk_edge	= OMAPDSS_DRIVE_SIG_RISING_EDGE,
+	.de_level	= OMAPDSS_SIG_ACTIVE_HIGH,
+	.sync_pclk_edge	= OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES,
+};
+
+static inline struct panel_sharp_ls037v7dw01_data
+*get_panel_data(const struct omap_dss_device *dssdev)
+{
+	return (struct panel_sharp_ls037v7dw01_data *) dssdev->data;
+}
+
+static int sharp_ls_panel_probe(struct omap_dss_device *dssdev)
+{
+	struct panel_sharp_ls037v7dw01_data *pd = get_panel_data(dssdev);
+	int r;
+
+	if (!pd)
+		return -EINVAL;
+
+	dssdev->panel.timings = sharp_ls_timings;
+
+	if (gpio_is_valid(pd->mo_gpio)) {
+		r = devm_gpio_request_one(&dssdev->dev, pd->mo_gpio,
+				GPIOF_OUT_INIT_LOW, "lcd MO");
+		if (r)
+			return r;
+	}
+
+	if (gpio_is_valid(pd->lr_gpio)) {
+		r = devm_gpio_request_one(&dssdev->dev, pd->lr_gpio,
+				GPIOF_OUT_INIT_HIGH, "lcd LR");
+		if (r)
+			return r;
+	}
+
+	if (gpio_is_valid(pd->ud_gpio)) {
+		r = devm_gpio_request_one(&dssdev->dev, pd->ud_gpio,
+				GPIOF_OUT_INIT_HIGH, "lcd UD");
+		if (r)
+			return r;
+	}
+
+	if (gpio_is_valid(pd->resb_gpio)) {
+		r = devm_gpio_request_one(&dssdev->dev, pd->resb_gpio,
+				GPIOF_OUT_INIT_LOW, "lcd RESB");
+		if (r)
+			return r;
+	}
+
+	if (gpio_is_valid(pd->ini_gpio)) {
+		r = devm_gpio_request_one(&dssdev->dev, pd->ini_gpio,
+				GPIOF_OUT_INIT_LOW, "lcd INI");
+		if (r)
+			return r;
+	}
+
+	return 0;
+}
+
+static void __exit sharp_ls_panel_remove(struct omap_dss_device *dssdev)
+{
+}
+
+static int sharp_ls_power_on(struct omap_dss_device *dssdev)
+{
+	struct panel_sharp_ls037v7dw01_data *pd = get_panel_data(dssdev);
+	int r = 0;
+
+	if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
+		return 0;
+
+	omapdss_dpi_set_timings(dssdev, &dssdev->panel.timings);
+	omapdss_dpi_set_data_lines(dssdev, dssdev->phy.dpi.data_lines);
+
+	r = omapdss_dpi_display_enable(dssdev);
+	if (r)
+		goto err0;
+
+	/* wait couple of vsyncs until enabling the LCD */
+	msleep(50);
+
+	if (gpio_is_valid(pd->resb_gpio))
+		gpio_set_value_cansleep(pd->resb_gpio, 1);
+
+	if (gpio_is_valid(pd->ini_gpio))
+		gpio_set_value_cansleep(pd->ini_gpio, 1);
+
+	return 0;
+err0:
+	return r;
+}
+
+static void sharp_ls_power_off(struct omap_dss_device *dssdev)
+{
+	struct panel_sharp_ls037v7dw01_data *pd = get_panel_data(dssdev);
+
+	if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
+		return;
+
+	if (gpio_is_valid(pd->ini_gpio))
+		gpio_set_value_cansleep(pd->ini_gpio, 0);
+
+	if (gpio_is_valid(pd->resb_gpio))
+		gpio_set_value_cansleep(pd->resb_gpio, 0);
+
+	/* wait at least 5 vsyncs after disabling the LCD */
+
+	msleep(100);
+
+	omapdss_dpi_display_disable(dssdev);
+}
+
+static int sharp_ls_panel_enable(struct omap_dss_device *dssdev)
+{
+	int r;
+	r = sharp_ls_power_on(dssdev);
+	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+	return r;
+}
+
+static void sharp_ls_panel_disable(struct omap_dss_device *dssdev)
+{
+	sharp_ls_power_off(dssdev);
+	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
+}
+
+static struct omap_dss_driver sharp_ls_driver = {
+	.probe		= sharp_ls_panel_probe,
+	.remove		= __exit_p(sharp_ls_panel_remove),
+
+	.enable		= sharp_ls_panel_enable,
+	.disable	= sharp_ls_panel_disable,
+
+	.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");