Add dss_features.c and dss_features.h for the dss_features framework Signed-off-by: Archit Taneja <archit@xxxxxx> --- drivers/video/omap2/dss/dss_features.c | 197 ++++++++++++++++++++++++++++++++ drivers/video/omap2/dss/dss_features.h | 48 ++++++++ 2 files changed, 245 insertions(+), 0 deletions(-) create mode 100644 drivers/video/omap2/dss/dss_features.c create mode 100644 drivers/video/omap2/dss/dss_features.h diff --git a/drivers/video/omap2/dss/dss_features.c b/drivers/video/omap2/dss/dss_features.c new file mode 100644 index 0000000..0ac18d2 --- /dev/null +++ b/drivers/video/omap2/dss/dss_features.c @@ -0,0 +1,197 @@ +/* + * linux/drivers/video/omap2/dss/dss_features.c + * + * Copyright (C) 2010 Texas Instruments + * Author: Archit Taneja <archit@xxxxxx> + * + * 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/kernel.h> +#include <linux/types.h> +#include <linux/err.h> +#include <linux/slab.h> + +#include <plat/display.h> +#include <plat/cpu.h> + +#include "dss_features.h" + +static struct list_head reg_field_list; +static int num_reg_fields; + +/* Defines a generic omap register field */ +struct dss_reg_field { + struct list_head list; + int id; + u8 start, end; +}; + +/* This struct is divided into 2 sets: the first gives a value corresponding + * to a feature, the second tells if a dss feature exists or not */ +static struct +{ + int num_mgrs; + int num_ovls; + enum omap_display_type supported_displays[MAX_DSS_MANAGERS]; + enum omap_color_mode supported_color_modes[MAX_DSS_OVERLAYS]; + + bool has_feature[MAX_DSS_FEATURES]; +} omap_dss_features; + +/* Functions to add/fetch the start and end bits of a DSS register field */ +static void dss_add_reg_field(int id, u8 start, u8 end) +{ + struct dss_reg_field *field; + field = kzalloc(sizeof(*field), GFP_KERNEL); + + ++num_reg_fields; + + field->id = id; + field->start = start; + field->end = end; + + list_add_tail(&field->list, ®_field_list); +} + +void omap_dss_get_reg_field(int id, u8 *start, u8 *end) +{ + struct dss_reg_field *field; + + list_for_each_entry(field, ®_field_list, list) { + if (field->id == id) { + *start = field->start; + *end = field->end; + return; + } + } + BUG(); +} +EXPORT_SYMBOL(omap_dss_get_reg_field); + +/* Functions returning values related to a DSS feature */ +int omap_dss_num_mgrs(void) +{ + return omap_dss_features.num_mgrs; +} +EXPORT_SYMBOL(omap_dss_num_mgrs); + +int omap_dss_num_ovls(void) +{ + return omap_dss_features.num_ovls; +} +EXPORT_SYMBOL(omap_dss_num_ovls); + +enum omap_display_type omap_dss_supported_displays(int id) +{ + return omap_dss_features.supported_displays[id]; +} +EXPORT_SYMBOL(omap_dss_supported_displays); + +enum omap_color_mode omap_dss_supported_color_modes(int id) +{ + return omap_dss_features.supported_color_modes[id]; +} +EXPORT_SYMBOL(omap_dss_supported_color_modes); + +/* DSS has_feature check */ +bool omap_dss_has_feature(int id) +{ + return omap_dss_features.has_feature[id]; +} +EXPORT_SYMBOL(omap_dss_has_feature); + +void omap_dss_features_init(void) +{ + INIT_LIST_HEAD(®_field_list); + num_reg_fields = 0; + + omap_dss_features.num_mgrs = 2; + omap_dss_features.num_ovls = 3; + + omap_dss_features.supported_displays[OMAP_DSS_CHANNEL_LCD] = + OMAP_DISPLAY_TYPE_DPI | OMAP_DISPLAY_TYPE_DBI | + OMAP_DISPLAY_TYPE_SDI | OMAP_DISPLAY_TYPE_DSI; + + omap_dss_features.supported_displays[OMAP_DSS_CHANNEL_DIGIT] = + OMAP_DISPLAY_TYPE_VENC; + + omap_dss_features.has_feature[GLOBAL_ALPHA_VIDEO1] = false; + + if (cpu_is_omap34xx()) { + omap_dss_features.supported_color_modes[OMAP_DSS_GFX] = + OMAP_DSS_COLOR_CLUT1 | OMAP_DSS_COLOR_CLUT2 | + OMAP_DSS_COLOR_CLUT4 | OMAP_DSS_COLOR_CLUT8 | + OMAP_DSS_COLOR_RGB12U | OMAP_DSS_COLOR_ARGB16 | + OMAP_DSS_COLOR_RGB16 | OMAP_DSS_COLOR_RGB24U | + OMAP_DSS_COLOR_RGB24P | OMAP_DSS_COLOR_ARGB32 | + OMAP_DSS_COLOR_RGBA32 | OMAP_DSS_COLOR_RGBX32; + + omap_dss_features.supported_color_modes[OMAP_DSS_VIDEO1] = + OMAP_DSS_COLOR_RGB24U | OMAP_DSS_COLOR_RGB24P | + OMAP_DSS_COLOR_RGB12U | OMAP_DSS_COLOR_RGB16 | + OMAP_DSS_COLOR_YUV2 | OMAP_DSS_COLOR_UYVY; + + omap_dss_features.supported_color_modes[OMAP_DSS_VIDEO2] = + OMAP_DSS_COLOR_RGB12U | OMAP_DSS_COLOR_ARGB16 | + OMAP_DSS_COLOR_RGB16 | OMAP_DSS_COLOR_RGB24U | + OMAP_DSS_COLOR_RGB24P | OMAP_DSS_COLOR_YUV2 | + OMAP_DSS_COLOR_UYVY | OMAP_DSS_COLOR_ARGB32 | + OMAP_DSS_COLOR_RGBA32 | OMAP_DSS_COLOR_RGBX32; + + omap_dss_features.has_feature[GLOBAL_ALPHA] = true; + + dss_add_reg_field(FIRHINC, 12, 0); + dss_add_reg_field(FIRVINC, 28, 16); + dss_add_reg_field(FIFOLOWTHRESHOLD, 11, 0); + dss_add_reg_field(FIFOHIGHTHRESHOLD, 27, 16); + dss_add_reg_field(FIFOSIZE, 10, 0); + } else { + /* cpu_is_omap24xx() */ + omap_dss_features.supported_color_modes[OMAP_DSS_GFX] = + OMAP_DSS_COLOR_CLUT1 | OMAP_DSS_COLOR_CLUT2 | + OMAP_DSS_COLOR_CLUT4 | OMAP_DSS_COLOR_CLUT8 | + OMAP_DSS_COLOR_RGB12U | OMAP_DSS_COLOR_RGB16 | + OMAP_DSS_COLOR_RGB24U | OMAP_DSS_COLOR_RGB24P; + + omap_dss_features.supported_color_modes[OMAP_DSS_VIDEO1] = + omap_dss_features.supported_color_modes[OMAP_DSS_VIDEO2] = + OMAP_DSS_COLOR_RGB16 | OMAP_DSS_COLOR_RGB24U | + OMAP_DSS_COLOR_RGB24P | OMAP_DSS_COLOR_YUV2 | + OMAP_DSS_COLOR_UYVY; + + omap_dss_features.has_feature[GLOBAL_ALPHA] = false; + + dss_add_reg_field(FIRHINC, 11, 0); + dss_add_reg_field(FIRVINC, 12, 0); + dss_add_reg_field(FIFOLOWTHRESHOLD, 8, 0); + dss_add_reg_field(FIFOHIGHTHRESHOLD, 24, 16); + dss_add_reg_field(FIFOSIZE, 8, 0); + } +} +EXPORT_SYMBOL(omap_dss_features_init); + +void omap_dss_features_exit(void) +{ + /* We only need to free the register field list for now */ + struct dss_reg_field *field; + + while (!list_empty(®_field_list)) { + field = list_first_entry(®_field_list, + struct dss_reg_field, list); + list_del(&field->list); + kfree(field); + } + num_reg_fields = 0; +} +EXPORT_SYMBOL(omap_dss_features_exit); diff --git a/drivers/video/omap2/dss/dss_features.h b/drivers/video/omap2/dss/dss_features.h new file mode 100644 index 0000000..e16fa07 --- /dev/null +++ b/drivers/video/omap2/dss/dss_features.h @@ -0,0 +1,48 @@ +/* + * linux/drivers/video/omap2/dss/dss_features.h + * + * Copyright (C) 2010 Texas Instruments + * Author: Archit Taneja <archit@xxxxxx> + * + * 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 __OMAP2_DSS_FEATURES_H +#define __OMAP2_DSS_FEATURES_H + +#define MAX_DSS_MANAGERS 2 +#define MAX_DSS_OVERLAYS 3 +#define MAX_DSS_FEATURES 10 + +/* DSS has feature id */ +#define GLOBAL_ALPHA 0 +#define GLOBAL_ALPHA_VIDEO1 1 + +/* DSS register field id */ +#define FIRHINC 0 +#define FIRVINC 1 +#define FIFOHIGHTHRESHOLD 2 +#define FIFOLOWTHRESHOLD 3 +#define FIFOSIZE 4 + +/* DSS Feature Functions */ +void omap_dss_get_reg_field(int id, u8 *start, u8 *end); +int omap_dss_num_mgrs(void); +int omap_dss_num_ovls(void); +enum omap_display_type omap_dss_supported_displays(int id); +enum omap_color_mode omap_dss_supported_color_modes(int id); + +bool omap_dss_has_feature(int id); +void omap_dss_features_init(void); +void omap_dss_features_exit(void); +#endif -- 1.7.0.4 -- 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
