Generic DPI 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 DPI 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-dpi.c to support new display panel. Signed-off-by: Bryan Wu <bryan.wu@xxxxxxxxxxxxx> --- .../arm/plat-omap/include/plat/panel-generic-dpi.h | 37 ++ drivers/video/omap2/displays/Kconfig | 8 + drivers/video/omap2/displays/Makefile | 1 + drivers/video/omap2/displays/panel-generic-dpi.c | 355 ++++++++++++++++++++ 4 files changed, 401 insertions(+), 0 deletions(-) create mode 100644 arch/arm/plat-omap/include/plat/panel-generic-dpi.h create mode 100644 drivers/video/omap2/displays/panel-generic-dpi.c diff --git a/arch/arm/plat-omap/include/plat/panel-generic-dpi.h b/arch/arm/plat-omap/include/plat/panel-generic-dpi.h new file mode 100644 index 0000000..7906197 --- /dev/null +++ b/arch/arm/plat-omap/include/plat/panel-generic-dpi.h @@ -0,0 +1,37 @@ +/* + * Header for generic DPI panel driver + * + * Copyright (C) 2010 Canonical Ltd. + * Author: Bryan Wu <bryan.wu@xxxxxxxxxxxxx> + * + * 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/>. + */ + +#ifndef __ARCH_ARM_PLAT_OMAP_PANEL_GENERIC_DPI_H +#define __ARCH_ARM_PLAT_OMAP_PANEL_GENERIC_DPI_H + +#include "display.h" + +/** + * struct panel_generic_dpi_data - panel driver configuration data + * @name: panel name + * @platform_enable: platform specific panel enable function + * @platform_disable: platform specific panel disable function + */ +struct panel_generic_dpi_data { + const char *name; + int (*platform_enable)(struct omap_dss_device *dssdev); + void (*platform_disable)(struct omap_dss_device *dssdev); +}; + +#endif /* __ARCH_ARM_PLAT_OMAP_PANEL_GENERIC_DPI_H */ diff --git a/drivers/video/omap2/displays/Kconfig b/drivers/video/omap2/displays/Kconfig index 12327bb..cb3e339 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_GENERIC_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..022058c 100644 --- a/drivers/video/omap2/displays/Makefile +++ b/drivers/video/omap2/displays/Makefile @@ -1,3 +1,4 @@ +obj-$(CONFIG_PANEL_GENERIC_DPI) += panel-generic-dpi.o obj-$(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-generic-dpi.c b/drivers/video/omap2/displays/panel-generic-dpi.c new file mode 100644 index 0000000..6702cf6 --- /dev/null +++ b/drivers/video/omap2/displays/panel-generic-dpi.c @@ -0,0 +1,355 @@ +/* + * 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 <linux/slab.h> + +#include <plat/panel-generic-dpi.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; + + int power_on_delay; + int power_off_delay; + + /* + * Used to match device to panel configuration + * when use generic panel driver + */ + const char *name; +}; + +/* Panel configurations */ +static struct panel_config generic_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, + .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", + }, +}; + +struct panel_drv_data { + + struct omap_dss_device *dssdev; + + struct panel_config *panel_config; +}; + +static inline struct panel_generic_dpi_data +*get_panel_data(const struct omap_dss_device *dssdev) +{ + return (struct panel_generic_dpi_data *) dssdev->data; +} + +static int generic_dpi_panel_power_on(struct omap_dss_device *dssdev) +{ + int r; + struct panel_generic_dpi_data *panel_data = get_panel_data(dssdev); + struct panel_drv_data *drv_data = dev_get_drvdata(&dssdev->dev); + struct panel_config *panel_config = drv_data->panel_config; + + 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 (panel_config->power_on_delay) + msleep(panel_config->power_on_delay); + + if (panel_data->platform_enable) { + r = panel_data->platform_enable(dssdev); + if (r) + goto err1; + } + + return 0; +err1: + omapdss_dpi_display_disable(dssdev); +err0: + return r; +} + +static void generic_dpi_panel_power_off(struct omap_dss_device *dssdev) +{ + struct panel_generic_dpi_data *panel_data = get_panel_data(dssdev); + struct panel_drv_data *drv_data = dev_get_drvdata(&dssdev->dev); + struct panel_config *panel_config = drv_data->panel_config; + + if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) + return; + + if (panel_data->platform_disable) + panel_data->platform_disable(dssdev); + + /* wait couple of vsyncs after disabling the LCD */ + if (panel_config->power_off_delay) + msleep(panel_config->power_off_delay); + + omapdss_dpi_display_disable(dssdev); +} + +static int generic_dpi_panel_probe(struct omap_dss_device *dssdev) +{ + struct panel_generic_dpi_data *panel_data = get_panel_data(dssdev); + struct panel_config *panel_config = NULL; + struct panel_drv_data *drv_data = NULL; + int i; + + dev_dbg(&dssdev->dev, "probe\n"); + + if (!panel_data || !panel_data->name) + return -EINVAL; + + for (i = 0; i < ARRAY_SIZE(generic_dpi_panels); i++) { + if (strcmp(panel_data->name, generic_dpi_panels[i].name) == 0) { + panel_config = &generic_dpi_panels[i]; + break; + } + } + + if (!panel_config) + return -EINVAL; + + dssdev->panel.config = panel_config->config; + dssdev->panel.timings = panel_config->timings; + dssdev->panel.acb = panel_config->acb; + dssdev->panel.acbi = panel_config->acbi; + + drv_data = kzalloc(sizeof(*drv_data), GFP_KERNEL); + if (!drv_data) + return -ENOMEM; + + drv_data->dssdev = dssdev; + drv_data->panel_config = panel_config; + + dev_set_drvdata(&dssdev->dev, drv_data); + + return 0; +} + +static void generic_dpi_panel_remove(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *drv_data = dev_get_drvdata(&dssdev->dev); + + dev_dbg(&dssdev->dev, "remove\n"); + + kfree(drv_data); + + dev_set_drvdata(&dssdev->dev, NULL); +} + +static int generic_dpi_panel_enable(struct omap_dss_device *dssdev) +{ + int r = 0; + + r = generic_dpi_panel_power_on(dssdev); + if (r) + return r; + + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; + + return 0; +} + +static void generic_dpi_panel_disable(struct omap_dss_device *dssdev) +{ + generic_dpi_panel_power_off(dssdev); + + dssdev->state = OMAP_DSS_DISPLAY_DISABLED; +} + +static int generic_dpi_panel_suspend(struct omap_dss_device *dssdev) +{ + generic_dpi_panel_power_off(dssdev); + + dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED; + + return 0; +} + +static int generic_dpi_panel_resume(struct omap_dss_device *dssdev) +{ + int r = 0; + + r = generic_dpi_panel_power_on(dssdev); + if (r) + return r; + + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; + + return 0; +} + +static void generic_dpi_panel_set_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + dpi_set_timings(dssdev, timings); +} + +static void generic_dpi_panel_get_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + *timings = dssdev->panel.timings; +} + +static int generic_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 = generic_dpi_panel_probe, + .remove = generic_dpi_panel_remove, + + .enable = generic_dpi_panel_enable, + .disable = generic_dpi_panel_disable, + .suspend = generic_dpi_panel_suspend, + .resume = generic_dpi_panel_resume, + + .set_timings = generic_dpi_panel_set_timings, + .get_timings = generic_dpi_panel_get_timings, + .check_timings = generic_dpi_panel_check_timings, + + .driver = { + .name = "generic_dpi_panel", + .owner = THIS_MODULE, + }, +}; + +static int __init generic_dpi_panel_drv_init(void) +{ + return omap_dss_register_driver(&dpi_driver); +} + +static void __exit generic_dpi_panel_drv_exit(void) +{ + omap_dss_unregister_driver(&dpi_driver); +} + +module_init(generic_dpi_panel_drv_init); +module_exit(generic_dpi_panel_drv_exit); +MODULE_LICENSE("GPL"); -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
