1 files changed, 191 insertions, 0 deletions

diff --git a/drivers/video/omap2/dss/dss_features.c b/drivers/video/omap2/dss/dss_features.c
new file mode 100644
index 000000000000..867f68de125f
--- /dev/null
+++ b/drivers/video/omap2/dss/dss_features.c
@@ -0,0 +1,191 @@
+/*
+ * linux/drivers/video/omap2/dss/dss_features.c
+ *
+ * Copyright (C) 2010 Texas Instruments
+ * Author: Archit Taneja <archit@ti.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/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"
+
+/* Defines a generic omap register field */
+struct dss_reg_field {
+        enum dss_feat_reg_field id;
+        u8 start, end;
+};
+
+struct omap_dss_features {
+        const struct dss_reg_field *reg_fields;
+        const int num_reg_fields;
+
+        const u32 has_feature;
+
+        const int num_mgrs;
+        const int num_ovls;
+        const enum omap_display_type *supported_displays;
+        const enum omap_color_mode *supported_color_modes;
+};
+
+/* This struct is assigned to one of the below during initialization */
+static struct omap_dss_features *omap_current_dss_features;
+
+static const struct dss_reg_field omap2_dss_reg_fields[] = {
+        { FEAT_REG_FIRHINC, 11, 0 },
+        { FEAT_REG_FIRVINC, 27, 16 },
+        { FEAT_REG_FIFOLOWTHRESHOLD, 8, 0 },
+        { FEAT_REG_FIFOHIGHTHRESHOLD, 24, 16 },
+        { FEAT_REG_FIFOSIZE, 8, 0 },
+};
+
+static const struct dss_reg_field omap3_dss_reg_fields[] = {
+        { FEAT_REG_FIRHINC, 12, 0 },
+        { FEAT_REG_FIRVINC, 28, 16 },
+        { FEAT_REG_FIFOLOWTHRESHOLD, 11, 0 },
+        { FEAT_REG_FIFOHIGHTHRESHOLD, 27, 16 },
+        { FEAT_REG_FIFOSIZE, 10, 0 },
+};
+
+static const enum omap_display_type omap2_dss_supported_displays[] = {
+        /* OMAP_DSS_CHANNEL_LCD */
+        OMAP_DISPLAY_TYPE_DPI | OMAP_DISPLAY_TYPE_DBI |
+        OMAP_DISPLAY_TYPE_SDI | OMAP_DISPLAY_TYPE_DSI,
+
+        /* OMAP_DSS_CHANNEL_DIGIT */
+        OMAP_DISPLAY_TYPE_VENC,
+};
+
+static const enum omap_display_type omap3_dss_supported_displays[] = {
+        /* OMAP_DSS_CHANNEL_LCD */
+        OMAP_DISPLAY_TYPE_DPI | OMAP_DISPLAY_TYPE_DBI |
+        OMAP_DISPLAY_TYPE_SDI | OMAP_DISPLAY_TYPE_DSI,
+
+        /* OMAP_DSS_CHANNEL_DIGIT */
+        OMAP_DISPLAY_TYPE_VENC,
+};
+
+static const enum omap_color_mode omap2_dss_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_VIDEO1 */
+        OMAP_DSS_COLOR_RGB16 | OMAP_DSS_COLOR_RGB24U |
+        OMAP_DSS_COLOR_RGB24P | OMAP_DSS_COLOR_YUV2 |
+        OMAP_DSS_COLOR_UYVY,
+
+        /* OMAP_DSS_VIDEO2 */
+        OMAP_DSS_COLOR_RGB16 | OMAP_DSS_COLOR_RGB24U |
+        OMAP_DSS_COLOR_RGB24P | OMAP_DSS_COLOR_YUV2 |
+        OMAP_DSS_COLOR_UYVY,
+};
+
+static const enum omap_color_mode omap3_dss_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_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_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,
+};
+
+/* OMAP2 DSS Features */
+static struct omap_dss_features omap2_dss_features = {
+        .reg_fields = omap2_dss_reg_fields,
+        .num_reg_fields = ARRAY_SIZE(omap2_dss_reg_fields),
+
+        .num_mgrs = 2,
+        .num_ovls = 3,
+        .supported_displays = omap2_dss_supported_displays,
+        .supported_color_modes = omap2_dss_supported_color_modes,
+};
+
+/* OMAP3 DSS Features */
+static struct omap_dss_features omap3_dss_features = {
+        .reg_fields = omap3_dss_reg_fields,
+        .num_reg_fields = ARRAY_SIZE(omap3_dss_reg_fields),
+
+        .has_feature    = FEAT_GLOBAL_ALPHA,
+
+        .num_mgrs = 2,
+        .num_ovls = 3,
+        .supported_displays = omap3_dss_supported_displays,
+        .supported_color_modes = omap3_dss_supported_color_modes,
+};
+
+/* Functions returning values related to a DSS feature */
+int dss_feat_get_num_mgrs(void)
+{
+        return omap_current_dss_features->num_mgrs;
+}
+
+int dss_feat_get_num_ovls(void)
+{
+        return omap_current_dss_features->num_ovls;
+}
+
+enum omap_display_type dss_feat_get_supported_displays(enum omap_channel channel)
+{
+        return omap_current_dss_features->supported_displays[channel];
+}
+
+enum omap_color_mode dss_feat_get_supported_color_modes(enum omap_plane plane)
+{
+        return omap_current_dss_features->supported_color_modes[plane];
+}
+
+/* DSS has_feature check */
+bool dss_has_feature(enum dss_feat_id id)
+{
+        return omap_current_dss_features->has_feature & id;
+}
+
+void dss_feat_get_reg_field(enum dss_feat_reg_field id, u8 *start, u8 *end)
+{
+        if (id >= omap_current_dss_features->num_reg_fields)
+                BUG();
+
+        *start = omap_current_dss_features->reg_fields[id].start;
+        *end = omap_current_dss_features->reg_fields[id].end;
+}
+
+void dss_features_init(void)
+{
+        if (cpu_is_omap24xx())
+                omap_current_dss_features = &omap2_dss_features;
+        else
+                omap_current_dss_features = &omap3_dss_features;
+}