Create a struct called omap_dss_writeback_info. This contains 'overlay like'
parameters of the writeback pipeline. These parameters are expected to be
configured via get/set_info ops by the DSS2 user similar to how overlay and
manager parameters are configured. These will also be configurable via sysfs
attributes of the dummy writeback panel.
Add get_wb_info/set_wb_info ops in omap_dss_writeback struct. Create a minimal
wb_priv_data structure and a writeback simple_check function used for
dss_wb_get_info and dss_wb_set_info functions in apply.c
Signed-off-by: Archit Taneja <archit@xxxxxx>
---
drivers/video/omap2/dss/apply.c | 45 ++++++++++++++++++++++++++++++++
drivers/video/omap2/dss/dss.h | 7 +++++
drivers/video/omap2/dss/dss_features.h | 1 +
drivers/video/omap2/dss/writeback.c | 27 +++++++++++++++++++
include/video/omapdss.h | 18 ++++++++++++
5 files changed, 98 insertions(+), 0 deletions(-)
diff --git a/drivers/video/omap2/dss/apply.c b/drivers/video/omap2/dss/apply.c
index d529664..19120c1 100644
--- a/drivers/video/omap2/dss/apply.c
+++ b/drivers/video/omap2/dss/apply.c
@@ -101,9 +101,16 @@ struct mgr_priv_data {
bool enabled;
};
+struct wb_priv_data {
+
+ bool user_info_dirty;
+ struct omap_dss_writeback_info user_info;
+};
+
static struct {
struct ovl_priv_data ovl_priv_data_array[MAX_DSS_OVERLAYS];
struct mgr_priv_data mgr_priv_data_array[MAX_DSS_MANAGERS];
+ struct wb_priv_data wb_priv_data_array[MAX_DSS_WB];
bool irq_enabled;
} dss_data;
@@ -126,6 +133,11 @@ static struct mgr_priv_data *get_mgr_priv(struct omap_overlay_manager *mgr)
return &dss_data.mgr_priv_data_array[mgr->id];
}
+static struct wb_priv_data *get_wb_priv(struct omap_dss_writeback *wb)
+{
+ return &dss_data.wb_priv_data_array[wb->id];
+}
+
void dss_apply_init(void)
{
const int num_ovls = dss_feat_get_num_ovls();
@@ -1351,3 +1363,36 @@ err:
return r;
}
+int dss_wb_set_info(struct omap_dss_writeback *wb,
+ struct omap_dss_writeback_info *info)
+{
+ struct wb_priv_data *wp = get_wb_priv(wb);
+ unsigned long flags;
+ int r;
+
+ r = dss_wb_simple_check(wb, info);
+ if (r)
+ return r;
+
+ spin_lock_irqsave(&data_lock, flags);
+
+ wp->user_info = *info;
+ wp->user_info_dirty = true;
+
+ spin_unlock_irqrestore(&data_lock, flags);
+
+ return 0;
+}
+
+void dss_wb_get_info(struct omap_dss_writeback *wb,
+ struct omap_dss_writeback_info *info)
+{
+ struct wb_priv_data *wp = get_wb_priv(wb);
+ unsigned long flags;
+
+ spin_lock_irqsave(&data_lock, flags);
+
+ *info = wp->user_info;
+
+ spin_unlock_irqrestore(&data_lock, flags);
+}
diff --git a/drivers/video/omap2/dss/dss.h b/drivers/video/omap2/dss/dss.h
index 607e730..9b3b93c 100644
--- a/drivers/video/omap2/dss/dss.h
+++ b/drivers/video/omap2/dss/dss.h
@@ -191,6 +191,11 @@ int dss_ovl_set_manager(struct omap_overlay *ovl,
struct omap_overlay_manager *mgr);
int dss_ovl_unset_manager(struct omap_overlay *ovl);
+int dss_wb_set_info(struct omap_dss_writeback *wb,
+ struct omap_dss_writeback_info *info);
+void dss_wb_get_info(struct omap_dss_writeback *wb,
+ struct omap_dss_writeback_info *info);
+
/* display */
int dss_suspend_all_devices(void);
int dss_resume_all_devices(void);
@@ -230,6 +235,8 @@ int dss_ovl_check(struct omap_overlay *ovl,
void dss_init_writeback(void);
void dss_uninit_writeback(void);
int writeback_init_display(struct omap_dss_device *dssdev);
+int dss_wb_simple_check(struct omap_dss_writeback *wb,
+ const struct omap_dss_writeback_info *info);
/* DSS */
int dss_init_platform_driver(void);
diff --git a/drivers/video/omap2/dss/dss_features.h b/drivers/video/omap2/dss/dss_features.h
index 75ee1f1..b3486da 100644
--- a/drivers/video/omap2/dss/dss_features.h
+++ b/drivers/video/omap2/dss/dss_features.h
@@ -28,6 +28,7 @@
#define MAX_DSS_OVERLAYS 4
#define MAX_DSS_LCD_MANAGERS 2
#define MAX_NUM_DSI 2
+#define MAX_DSS_WB 1
/* DSS has feature id */
enum dss_feat_id {
diff --git a/drivers/video/omap2/dss/writeback.c b/drivers/video/omap2/dss/writeback.c
index ac5d3ba..5e54221 100644
--- a/drivers/video/omap2/dss/writeback.c
+++ b/drivers/video/omap2/dss/writeback.c
@@ -78,6 +78,9 @@ void dss_init_writeback(void)
struct omap_dss_writeback *wb = &writeback[i];
wb->id = i;
+
+ wb->set_wb_info = &dss_wb_set_info;
+ wb->get_wb_info = &dss_wb_get_info;
}
omap_dss_register_driver(&writeback_panel_driver);
@@ -109,6 +112,30 @@ int writeback_init_display(struct omap_dss_device *dssdev)
return 0;
}
+int dss_wb_simple_check(struct omap_dss_writeback *wb,
+ const struct omap_dss_writeback_info *info)
+{
+ if (info->paddr == 0) {
+ DSSERR("wb_simple_check: paddr cannot be 0\n");
+ return -EINVAL;
+ }
+
+ if (info->color_mode == OMAP_DSS_COLOR_NV12 &&
+ info->p_uv_addr == 0) {
+ DSSERR("wb_simple_check: p_uv_addr cannot be 0 for NV12"
+ " format\n");
+ return -EINVAL;
+ }
+
+ if (info->capture_rate < 0 || info->capture_rate > 7) {
+ DSSERR("wb_simple_check: capture rate cannot be %d\n",
+ info->capture_rate);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
/* Dummy Writeback Panel driver */
static int writeback_panel_probe(struct omap_dss_device *dssdev)
diff --git a/include/video/omapdss.h b/include/video/omapdss.h
index 77e2ca4..01092e4 100644
--- a/include/video/omapdss.h
+++ b/include/video/omapdss.h
@@ -472,11 +472,29 @@ struct omap_overlay_manager {
struct omap_dss_device *(*get_writeback)(struct omap_overlay_manager *mgr);
};
+struct omap_dss_writeback_info {
+ u32 paddr;
+ u32 p_uv_addr;
+ u16 buf_width;
+ u16 buf_height;
+ enum omap_color_mode color_mode;
+ u8 rotation;
+ enum omap_dss_rotation_type rotation_type;
+ bool mirror;
+ u8 pre_mult_alpha;
+ int capture_rate;
+};
+
struct omap_dss_writeback {
int id;
/* dummy panel we are connected to */
struct omap_dss_device *dssdev;
+
+ int (*set_wb_info)(struct omap_dss_writeback *wb,
+ struct omap_dss_writeback_info *info);
+ void (*get_wb_info)(struct omap_dss_writeback *wb,
+ struct omap_dss_writeback_info *info);
};
struct omap_dss_device {
--
1.7.4.1
--
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