OMAP: DSS2: Add generic DPI panel display driver
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@canonical.com> Acked-by: Archit Taneja <archit@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
This commit is contained in:
Bryan Wu
Tomi Valkeinen
parent
36e8c27f3b
commit
a9a62b6a88
37
arch/arm/plat-omap/include/plat/panel-generic-dpi.h
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37
arch/arm/plat-omap/include/plat/panel-generic-dpi.h
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@ -0,0 +1,37 @@
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/*
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* Header for generic DPI panel driver
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*
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* Copyright (C) 2010 Canonical Ltd.
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* Author: Bryan Wu <bryan.wu@canonical.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ARCH_ARM_PLAT_OMAP_PANEL_GENERIC_DPI_H
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#define __ARCH_ARM_PLAT_OMAP_PANEL_GENERIC_DPI_H
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#include "display.h"
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/**
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* struct panel_generic_dpi_data - panel driver configuration data
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* @name: panel name
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* @platform_enable: platform specific panel enable function
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* @platform_disable: platform specific panel disable function
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*/
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struct panel_generic_dpi_data {
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const char *name;
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int (*platform_enable)(struct omap_dss_device *dssdev);
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void (*platform_disable)(struct omap_dss_device *dssdev);
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};
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#endif /* __ARCH_ARM_PLAT_OMAP_PANEL_GENERIC_DPI_H */
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@ -1,6 +1,14 @@
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menu "OMAP2/3 Display Device Drivers"
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depends on OMAP2_DSS
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config PANEL_GENERIC_DPI
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tristate "Generic DPI Panel"
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help
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Generic DPI panel driver.
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Supports DVI output for Beagle and OMAP3 SDP.
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Supports LCD Panel used in TI SDP3430 and EVM boards,
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OMAP3517 EVM boards and CM-T35.
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config PANEL_GENERIC
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tristate "Generic Panel"
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help
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@ -1,3 +1,4 @@
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obj-$(CONFIG_PANEL_GENERIC_DPI) += panel-generic-dpi.o
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obj-$(CONFIG_PANEL_GENERIC) += panel-generic.o
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obj-$(CONFIG_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o
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obj-$(CONFIG_PANEL_SHARP_LQ043T1DG01) += panel-sharp-lq043t1dg01.o
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355
drivers/video/omap2/displays/panel-generic-dpi.c
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355
drivers/video/omap2/displays/panel-generic-dpi.c
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@ -0,0 +1,355 @@
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/*
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* Generic DPI Panels support
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*
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* Copyright (C) 2010 Canonical Ltd.
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* Author: Bryan Wu <bryan.wu@canonical.com>
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*
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* Copyright (C) 2008 Nokia Corporation
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* Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <plat/panel-generic-dpi.h>
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struct panel_config {
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struct omap_video_timings timings;
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int acbi; /* ac-bias pin transitions per interrupt */
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/* Unit: line clocks */
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int acb; /* ac-bias pin frequency */
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enum omap_panel_config config;
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int power_on_delay;
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int power_off_delay;
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/*
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* Used to match device to panel configuration
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* when use generic panel driver
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*/
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const char *name;
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};
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/* Panel configurations */
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static struct panel_config generic_dpi_panels[] = {
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/* Generic Panel */
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{
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{
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.x_res = 640,
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.y_res = 480,
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.pixel_clock = 23500,
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.hfp = 48,
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.hsw = 32,
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.hbp = 80,
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.vfp = 3,
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.vsw = 4,
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.vbp = 7,
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},
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.acbi = 0x0,
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.acb = 0x0,
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.config = OMAP_DSS_LCD_TFT,
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.power_on_delay = 0,
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.power_off_delay = 0,
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.name = "generic",
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},
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/* Sharp LQ043T1DG01 */
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{
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{
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.x_res = 480,
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.y_res = 272,
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.pixel_clock = 9000,
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.hsw = 42,
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.hfp = 3,
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.hbp = 2,
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.vsw = 11,
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.vfp = 3,
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.vbp = 2,
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},
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.acbi = 0x0,
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.acb = 0x0,
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.config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
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OMAP_DSS_LCD_IHS | OMAP_DSS_LCD_IEO,
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.power_on_delay = 50,
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.power_off_delay = 100,
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.name = "sharp_lq",
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},
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/* Sharp LS037V7DW01 */
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{
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{
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.x_res = 480,
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.y_res = 640,
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.pixel_clock = 19200,
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.hsw = 2,
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.hfp = 1,
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.hbp = 28,
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.vsw = 1,
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.vfp = 1,
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.vbp = 1,
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},
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.acbi = 0x0,
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.acb = 0x28,
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.config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
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OMAP_DSS_LCD_IHS,
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.power_on_delay = 50,
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.power_off_delay = 100,
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.name = "sharp_ls",
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},
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/* Toppoly TDO35S */
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{
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{
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.x_res = 480,
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.y_res = 640,
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.pixel_clock = 26000,
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.hfp = 104,
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.hsw = 8,
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.hbp = 8,
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.vfp = 4,
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.vsw = 2,
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.vbp = 2,
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},
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.acbi = 0x0,
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.acb = 0x0,
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.config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
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OMAP_DSS_LCD_IHS | OMAP_DSS_LCD_IPC |
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OMAP_DSS_LCD_ONOFF,
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.power_on_delay = 0,
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.power_off_delay = 0,
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.name = "toppoly_tdo35s",
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},
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};
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struct panel_drv_data {
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struct omap_dss_device *dssdev;
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struct panel_config *panel_config;
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};
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static inline struct panel_generic_dpi_data
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*get_panel_data(const struct omap_dss_device *dssdev)
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{
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return (struct panel_generic_dpi_data *) dssdev->data;
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}
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static int generic_dpi_panel_power_on(struct omap_dss_device *dssdev)
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{
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int r;
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struct panel_generic_dpi_data *panel_data = get_panel_data(dssdev);
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struct panel_drv_data *drv_data = dev_get_drvdata(&dssdev->dev);
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struct panel_config *panel_config = drv_data->panel_config;
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if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
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return 0;
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r = omapdss_dpi_display_enable(dssdev);
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if (r)
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goto err0;
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/* wait couple of vsyncs until enabling the LCD */
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if (panel_config->power_on_delay)
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msleep(panel_config->power_on_delay);
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if (panel_data->platform_enable) {
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r = panel_data->platform_enable(dssdev);
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if (r)
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goto err1;
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}
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return 0;
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err1:
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omapdss_dpi_display_disable(dssdev);
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err0:
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return r;
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}
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static void generic_dpi_panel_power_off(struct omap_dss_device *dssdev)
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{
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struct panel_generic_dpi_data *panel_data = get_panel_data(dssdev);
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struct panel_drv_data *drv_data = dev_get_drvdata(&dssdev->dev);
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struct panel_config *panel_config = drv_data->panel_config;
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if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
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return;
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if (panel_data->platform_disable)
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panel_data->platform_disable(dssdev);
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/* wait couple of vsyncs after disabling the LCD */
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if (panel_config->power_off_delay)
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msleep(panel_config->power_off_delay);
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omapdss_dpi_display_disable(dssdev);
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}
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static int generic_dpi_panel_probe(struct omap_dss_device *dssdev)
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{
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struct panel_generic_dpi_data *panel_data = get_panel_data(dssdev);
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struct panel_config *panel_config = NULL;
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struct panel_drv_data *drv_data = NULL;
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int i;
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dev_dbg(&dssdev->dev, "probe\n");
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if (!panel_data || !panel_data->name)
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return -EINVAL;
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for (i = 0; i < ARRAY_SIZE(generic_dpi_panels); i++) {
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if (strcmp(panel_data->name, generic_dpi_panels[i].name) == 0) {
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panel_config = &generic_dpi_panels[i];
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break;
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}
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}
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if (!panel_config)
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return -EINVAL;
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dssdev->panel.config = panel_config->config;
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dssdev->panel.timings = panel_config->timings;
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dssdev->panel.acb = panel_config->acb;
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dssdev->panel.acbi = panel_config->acbi;
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drv_data = kzalloc(sizeof(*drv_data), GFP_KERNEL);
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if (!drv_data)
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return -ENOMEM;
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drv_data->dssdev = dssdev;
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drv_data->panel_config = panel_config;
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dev_set_drvdata(&dssdev->dev, drv_data);
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return 0;
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}
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static void generic_dpi_panel_remove(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *drv_data = dev_get_drvdata(&dssdev->dev);
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dev_dbg(&dssdev->dev, "remove\n");
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kfree(drv_data);
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dev_set_drvdata(&dssdev->dev, NULL);
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}
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static int generic_dpi_panel_enable(struct omap_dss_device *dssdev)
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{
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int r = 0;
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r = generic_dpi_panel_power_on(dssdev);
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if (r)
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return r;
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dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
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return 0;
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}
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static void generic_dpi_panel_disable(struct omap_dss_device *dssdev)
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{
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generic_dpi_panel_power_off(dssdev);
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dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
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}
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static int generic_dpi_panel_suspend(struct omap_dss_device *dssdev)
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{
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generic_dpi_panel_power_off(dssdev);
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dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
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return 0;
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}
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static int generic_dpi_panel_resume(struct omap_dss_device *dssdev)
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{
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int r = 0;
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r = generic_dpi_panel_power_on(dssdev);
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if (r)
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return r;
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dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
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return 0;
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}
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static void generic_dpi_panel_set_timings(struct omap_dss_device *dssdev,
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struct omap_video_timings *timings)
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{
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dpi_set_timings(dssdev, timings);
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}
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static void generic_dpi_panel_get_timings(struct omap_dss_device *dssdev,
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struct omap_video_timings *timings)
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{
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*timings = dssdev->panel.timings;
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}
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static int generic_dpi_panel_check_timings(struct omap_dss_device *dssdev,
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struct omap_video_timings *timings)
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{
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return dpi_check_timings(dssdev, timings);
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}
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static struct omap_dss_driver dpi_driver = {
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.probe = generic_dpi_panel_probe,
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.remove = generic_dpi_panel_remove,
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.enable = generic_dpi_panel_enable,
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.disable = generic_dpi_panel_disable,
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.suspend = generic_dpi_panel_suspend,
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.resume = generic_dpi_panel_resume,
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.set_timings = generic_dpi_panel_set_timings,
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.get_timings = generic_dpi_panel_get_timings,
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.check_timings = generic_dpi_panel_check_timings,
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.driver = {
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.name = "generic_dpi_panel",
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.owner = THIS_MODULE,
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},
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};
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static int __init generic_dpi_panel_drv_init(void)
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{
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return omap_dss_register_driver(&dpi_driver);
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}
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static void __exit generic_dpi_panel_drv_exit(void)
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{
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omap_dss_unregister_driver(&dpi_driver);
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}
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module_init(generic_dpi_panel_drv_init);
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module_exit(generic_dpi_panel_drv_exit);
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MODULE_LICENSE("GPL");
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