[PATCH 1/3] OMAP: DSS2: Add dummy panel display driver
Bryan Wu
bryan.wu at canonical.com
Tue Nov 2 12:13:08 EDT 2010
Dummy panel driver includes the driver and 4 similar panel configurations. It
will match the panel name which is passed from platform data and setup the
right configurations.
With dummy panel driver, we can remove those 4 duplicated panel display
drivers. In the future, it is simple for us just add new panel configuration
date in panel-dummy.h to support new display panel.
Signed-off-by: Bryan Wu <bryan.wu at canonical.com>
---
drivers/video/omap2/displays/Kconfig | 8 +
drivers/video/omap2/displays/Makefile | 1 +
drivers/video/omap2/displays/panel-dummy.c | 195 ++++++++++++++++++++++++++++
drivers/video/omap2/displays/panel-dummy.h | 119 +++++++++++++++++
4 files changed, 323 insertions(+), 0 deletions(-)
create mode 100644 drivers/video/omap2/displays/panel-dummy.c
create mode 100644 drivers/video/omap2/displays/panel-dummy.h
diff --git a/drivers/video/omap2/displays/Kconfig b/drivers/video/omap2/displays/Kconfig
index 12327bb..4b2ed33 100644
--- a/drivers/video/omap2/displays/Kconfig
+++ b/drivers/video/omap2/displays/Kconfig
@@ -1,6 +1,14 @@
menu "OMAP2/3 Display Device Drivers"
depends on OMAP2_DSS
+config PANEL_DUMMY
+ tristate "Dummy Panel"
+ help
+ Dummy panel driver.
+ Supports DVI output for Beagle and OMAP3 SDP.
+ Supports LCD Panel used in TI SDP3430 and EVM boards,
+ OMAP3517 EVM boards and CM-T35.
+
config PANEL_GENERIC
tristate "Generic Panel"
help
diff --git a/drivers/video/omap2/displays/Makefile b/drivers/video/omap2/displays/Makefile
index aa38609..5b50036 100644
--- a/drivers/video/omap2/displays/Makefile
+++ b/drivers/video/omap2/displays/Makefile
@@ -1,3 +1,4 @@
+obj-$(CONFIG_PANEL_DUMMY) += panel-dummy.o
obj-$(CONFIG_PANEL_GENERIC) += panel-generic.o
obj-$(CONFIG_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o
obj-$(CONFIG_PANEL_SHARP_LQ043T1DG01) += panel-sharp-lq043t1dg01.o
diff --git a/drivers/video/omap2/displays/panel-dummy.c b/drivers/video/omap2/displays/panel-dummy.c
new file mode 100644
index 0000000..c4c387a
--- /dev/null
+++ b/drivers/video/omap2/displays/panel-dummy.c
@@ -0,0 +1,195 @@
+/*
+ * Dummy Panels support
+ *
+ * Copyright (C) 2010 Canonical Ltd.
+ * Author: Bryan Wu <bryan.wu at canonical.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>
+
+#include "panel-dummy.h"
+
+static int dummy_panel_power_on(struct omap_dss_device *dssdev)
+{
+ int r;
+ struct omap_display_panel *p = &dssdev->panel;
+
+ 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 */
+ if (p->power_on_delay)
+ msleep(p->power_on_delay);
+
+ 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 dummy_panel_power_off(struct omap_dss_device *dssdev)
+{
+ struct omap_display_panel *p = &dssdev->panel;
+
+ if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
+ return;
+
+ if (dssdev->platform_disable)
+ dssdev->platform_disable(dssdev);
+
+ /* wait couple of vsyncs after disabling the LCD */
+ if (p->power_off_delay)
+ msleep(p->power_off_delay);
+
+ omapdss_dpi_display_disable(dssdev);
+}
+
+static int dummy_panel_probe(struct omap_dss_device *dssdev)
+{
+ struct omap_display_panel *dp = &dssdev->panel;
+ struct omap_display_panel *pp = NULL;
+ int i;
+ int matched = 0;
+
+ if (dp->name == NULL)
+ return -ENODEV;
+
+ /* Match for the configuration of the panel */
+ for (i = 0; i < ARRAY_SIZE(dummy_panels); i++) {
+ pp = &dummy_panels[i];
+ if (strcmp(pp->name, dp->name) == 0) {
+ matched = 1;
+ break;
+ }
+ }
+
+ if (!matched)
+ return -ENODEV;
+
+ memcpy(dp, pp, sizeof(struct omap_display_panel));
+
+ return 0;
+}
+
+static void dummy_panel_remove(struct omap_dss_device *dssdev)
+{
+}
+
+static int dummy_panel_enable(struct omap_dss_device *dssdev)
+{
+ int r = 0;
+
+ r = dummy_panel_power_on(dssdev);
+ if (r)
+ return r;
+
+ dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+
+ return 0;
+}
+
+static void dummy_panel_disable(struct omap_dss_device *dssdev)
+{
+ dummy_panel_power_off(dssdev);
+
+ dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
+}
+
+static int dummy_panel_suspend(struct omap_dss_device *dssdev)
+{
+ dummy_panel_power_off(dssdev);
+
+ dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
+
+ return 0;
+}
+
+static int dummy_panel_resume(struct omap_dss_device *dssdev)
+{
+ int r = 0;
+
+ r = dummy_panel_power_on(dssdev);
+ if (r)
+ return r;
+
+ dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+
+ return 0;
+}
+
+static void dummy_panel_set_timings(struct omap_dss_device *dssdev,
+ struct omap_video_timings *timings)
+{
+ dpi_set_timings(dssdev, timings);
+}
+
+static void dummy_panel_get_timings(struct omap_dss_device *dssdev,
+ struct omap_video_timings *timings)
+{
+ *timings = dssdev->panel.timings;
+}
+
+static int dummy_panel_check_timings(struct omap_dss_device *dssdev,
+ struct omap_video_timings *timings)
+{
+ return dpi_check_timings(dssdev, timings);
+}
+
+static struct omap_dss_driver dummy_driver = {
+ .probe = dummy_panel_probe,
+ .remove = dummy_panel_remove,
+
+ .enable = dummy_panel_enable,
+ .disable = dummy_panel_disable,
+ .suspend = dummy_panel_suspend,
+ .resume = dummy_panel_resume,
+
+ .set_timings = dummy_panel_set_timings,
+ .get_timings = dummy_panel_get_timings,
+ .check_timings = dummy_panel_check_timings,
+
+ .driver = {
+ .name = "dummy_panels",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init dummy_panel_drv_init(void)
+{
+ return omap_dss_register_driver(&dummy_driver);
+}
+
+static void __exit dummy_panel_drv_exit(void)
+{
+ omap_dss_unregister_driver(&dummy_driver);
+}
+
+module_init(dummy_panel_drv_init);
+module_exit(dummy_panel_drv_exit);
+MODULE_LICENSE("GPL");
diff --git a/drivers/video/omap2/displays/panel-dummy.h b/drivers/video/omap2/displays/panel-dummy.h
new file mode 100644
index 0000000..ac2b7a2
--- /dev/null
+++ b/drivers/video/omap2/displays/panel-dummy.h
@@ -0,0 +1,119 @@
+/*
+ * Dummy panels support
+ *
+ * Copyright (C) 2010 Bryan Wu
+ * Author: Bryan Wu <bryan.wu at canonical.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/>.
+ */
+
+static struct omap_display_panel dummy_panels[] = {
+ /* Generic Panel */
+ {
+ {
+ .x_res = 640,
+ .y_res = 480,
+
+ .pixel_clock = 23500,
+
+ .hfp = 48,
+ .hsw = 32,
+ .hbp = 80,
+
+ .vfp = 3,
+ .vsw = 4,
+ .vbp = 7,
+ },
+ .acbi = 0x0,
+ .acb = 0x0,
+ .config = OMAP_DSS_LCD_TFT,
+ .power_on_delay = 0,
+ .power_off_delay = 0,
+ .name = "generic",
+ },
+
+ /* Sharp LQ043T1DG01 */
+ {
+ { .x_res = 480,
+ .y_res = 272,
+
+ .pixel_clock = 9000,
+
+ .hsw = 42,
+ .hfp = 3,
+ .hbp = 2,
+
+ .vsw = 11,
+ .vfp = 3,
+ .vbp = 2,
+ },
+ .acbi = 0x0,
+ .acb = 0x0,
+ .config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
+ OMAP_DSS_LCD_IHS | OMAP_DSS_LCD_IEO,
+ .power_on_delay = 50,
+ .power_off_delay = 100,
+ .name = "sharp_lq",
+ },
+
+ /* Sharp LS037V7DW01 */
+ {
+ {
+ .x_res = 480,
+ .y_res = 640,
+
+ .pixel_clock = 19200,
+
+ .hsw = 2,
+ .hfp = 1,
+ .hbp = 28,
+
+ .vsw = 1,
+ .vfp = 1,
+ .vbp = 1,
+ },
+ .acbi = 0x0,
+ .acb = 0x28,
+ .config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
+ OMAP_DSS_LCD_IHS,
+ .power_on_delay = 50,
+ .power_off_delay = 100,
+ .name = "sharp_ls",
+ },
+
+ /* Toppoly TDO35S */
+ {
+ {
+ .x_res = 480,
+ .y_res = 640,
+
+ .pixel_clock = 26000,
+
+ .hfp = 104,
+ .hsw = 8,
+ .hbp = 8,
+
+ .vfp = 4,
+ .vsw = 2,
+ .vbp = 2,
+ },
+ .acbi = 0x0,
+ .acb = 0x0,
+ .config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
+ OMAP_DSS_LCD_IHS | OMAP_DSS_LCD_IPC |
+ OMAP_DSS_LCD_ONOFF,
+ .power_on_delay = 0,
+ .power_off_delay = 0,
+ .name = "toppoly_tdo35s",
+ },
+};
--
1.7.1
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