Generic 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 generic 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-generic.c to support new display panel.
Signed-off-by: Bryan Wu <bryan.wu@xxxxxxxxxxxxx>
---
drivers/video/omap2/displays/Kconfig | 8 +
drivers/video/omap2/displays/Makefile | 1 +
drivers/video/omap2/displays/panel-dpi.c | 306 ++++++++++++++++++++++++++++++
3 files changed, 315 insertions(+), 0 deletions(-)
create mode 100644 drivers/video/omap2/displays/panel-dpi.c
diff --git a/drivers/video/omap2/displays/Kconfig b/drivers/video/omap2/displays/Kconfig
index 12327bb..9602d3f 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_DPI
+ tristate "Generic DPI Panel"
+ help
+ Generic DPI 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..1265772 100644
--- a/drivers/video/omap2/displays/Makefile
+++ b/drivers/video/omap2/displays/Makefile
@@ -1,3 +1,4 @@
+obj-$(CONFIG_PANEL_DPI) += panel-dpi.o
obj-$(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-dpi.c b/drivers/video/omap2/displays/panel-dpi.c
new file mode 100644
index 0000000..1007ecb
--- /dev/null
+++ b/drivers/video/omap2/displays/panel-dpi.c
@@ -0,0 +1,306 @@
+/*
+ * Generic DPI Panels support
+ *
+ * Copyright (C) 2010 Canonical Ltd.
+ * Author: Bryan Wu <bryan.wu@xxxxxxxxxxxxx>
+ *
+ * Copyright (C) 2008 Nokia Corporation
+ * Author: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxx>
+ *
+ * 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/panel.h>
+
+struct panel_config {
+ struct omap_video_timings timings;
+
+ int acbi; /* ac-bias pin transitions per interrupt */
+ /* Unit: line clocks */
+ int acb; /* ac-bias pin frequency */
+
+ enum omap_panel_config config;
+
+ /*
+ * Used to match device to panel configuration
+ * when use generic panel driver
+ */
+ const char *name;
+
+ int data_lines;
+};
+
+/* Panel configurations */
+static struct panel_config dpi_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,
+ .name = "generic",
+ .data_lines = 24,
+ },
+
+ /* 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,
+ .name = "sharp_lq",
+ .data_lines = 16,
+ },
+
+ /* 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,
+ .name = "sharp_ls",
+ .data_lines = 16,
+ },
+
+ /* 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,
+ .name = "toppoly_tdo35s",
+ .data_lines = 18,
+ },
+};
+
+static int dpi_panel_power_on(struct omap_dss_device *dssdev)
+{
+ int r;
+
+ if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
+ return 0;
+
+ r = omapdss_dpi_display_enable(dssdev);
+ if (r)
+ goto err0;
+
+ 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 dpi_panel_power_off(struct omap_dss_device *dssdev)
+{
+ if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
+ return;
+
+ if (dssdev->platform_disable)
+ dssdev->platform_disable(dssdev);
+
+ omapdss_dpi_display_disable(dssdev);
+}
+
+static int dpi_panel_probe(struct omap_dss_device *dssdev)
+{
+ struct panel_data *panel_data = get_panel_data(dssdev);
+ struct panel_config *panel_config = NULL;
+ int i;
+
+ dev_dbg(&dssdev->dev, "probe\n");
+
+ if (!panel_data || !panel_data->name)
+ return -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(dpi_panels); i++) {
+ if (strcmp(panel_data->name, dpi_panels[i].name) == 0) {
+ panel_config = &dpi_panels[i];
+ break;
+ }
+ }
+
+ if (!panel_config)
+ return -EINVAL;
+
+ dssdev->type = OMAP_DISPLAY_TYPE_DPI;
+ dssdev->panel.config = panel_config->config;
+ dssdev->panel.timings = panel_config->timings;
+ dssdev->panel.acb = panel_config->acb;
+ dssdev->panel.acbi = panel_config->acbi;
+ dssdev->phy.dpi.data_lines = panel_config->data_lines;
+
+ return 0;
+}
+
+static void dpi_panel_remove(struct omap_dss_device *dssdev)
+{
+}
+
+static int dpi_panel_enable(struct omap_dss_device *dssdev)
+{
+ int r = 0;
+
+ r = dpi_panel_power_on(dssdev);
+ if (r)
+ return r;
+
+ dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+
+ return 0;
+}
+
+static void dpi_panel_disable(struct omap_dss_device *dssdev)
+{
+ dpi_panel_power_off(dssdev);
+
+ dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
+}
+
+static int dpi_panel_suspend(struct omap_dss_device *dssdev)
+{
+ dpi_panel_power_off(dssdev);
+
+ dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
+
+ return 0;
+}
+
+static int dpi_panel_resume(struct omap_dss_device *dssdev)
+{
+ int r = 0;
+
+ r = dpi_panel_power_on(dssdev);
+ if (r)
+ return r;
+
+ dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+
+ return 0;
+}
+
+static void dpi_panel_set_timings(struct omap_dss_device *dssdev,
+ struct omap_video_timings *timings)
+{
+ dpi_set_timings(dssdev, timings);
+}
+
+static void dpi_panel_get_timings(struct omap_dss_device *dssdev,
+ struct omap_video_timings *timings)
+{
+ *timings = dssdev->panel.timings;
+}
+
+static int dpi_panel_check_timings(struct omap_dss_device *dssdev,
+ struct omap_video_timings *timings)
+{
+ return dpi_check_timings(dssdev, timings);
+}
+
+static struct omap_dss_driver dpi_driver = {
+ .probe = dpi_panel_probe,
+ .remove = dpi_panel_remove,
+
+ .enable = dpi_panel_enable,
+ .disable = dpi_panel_disable,
+ .suspend = dpi_panel_suspend,
+ .resume = dpi_panel_resume,
+
+ .set_timings = dpi_panel_set_timings,
+ .get_timings = dpi_panel_get_timings,
+ .check_timings = dpi_panel_check_timings,
+
+ .driver = {
+ .name = "dpi_panel",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init dpi_panel_drv_init(void)
+{
+ return omap_dss_register_driver(&dpi_driver);
+}
+
+static void __exit dpi_panel_drv_exit(void)
+{
+ omap_dss_unregister_driver(&dpi_driver);
+}
+
+module_init(dpi_panel_drv_init);
+module_exit(dpi_panel_drv_exit);
+MODULE_LICENSE("GPL");
--
1.7.1
--
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