Add channel_in as a parameter in writeback's private data. This sets the
extra_info_dirty flag as this parameter is configured when we set/unset the
dummy writeback panel's manager unlike the other parameter which are
configured through set/unset_wb_info ops by the DSS2 user.
Add a helper function dss_mgr_set_writeback() which is called by the manager
set/unset_device ops to configure the channel_in parameter and set the
extra_info_dirty flags. It returns an error if we try to unset writeback when
it is enabled.
Add a dummy dispc_wb_set_channel_in() function. This will be filled up later.
Signed-off-by: Archit Taneja <archit@xxxxxx>
---
drivers/video/omap2/dss/apply.c | 59 +++++++++++++++++++++++++++++-----
drivers/video/omap2/dss/dispc.c | 5 +++
drivers/video/omap2/dss/dss.h | 12 +++++++
drivers/video/omap2/dss/writeback.c | 15 +++++++++
4 files changed, 82 insertions(+), 9 deletions(-)
diff --git a/drivers/video/omap2/dss/apply.c b/drivers/video/omap2/dss/apply.c
index aee0420..9f3c174 100644
--- a/drivers/video/omap2/dss/apply.c
+++ b/drivers/video/omap2/dss/apply.c
@@ -114,6 +114,8 @@ struct wb_priv_data {
bool extra_info_dirty;
bool shadow_extra_info_dirty;
+ enum dss_writeback_channel_in channel_in;
+
/* If true, GO bit is up and shadow registers cannot be written.
* Never true for writeback in memory to memory mode */
bool busy;
@@ -137,6 +139,8 @@ static DEFINE_MUTEX(apply_lock);
static DECLARE_COMPLETION(extra_updated_completion);
static void dss_register_vsync_isr(void);
+static int dss_mgr_set_writeback(struct omap_overlay_manager *mgr,
+ struct omap_dss_writeback *wb, bool set);
static struct ovl_priv_data *get_ovl_priv(struct omap_overlay *ovl)
{
@@ -682,7 +686,7 @@ static void dss_wb_write_regs_extra(struct omap_dss_writeback *wb)
if (!wp->extra_info_dirty)
return;
- /* Write extra registers here */
+ dispc_wb_set_channel_in(wb->id, wp->channel_in);
wp->extra_info_dirty = false;
wp->shadow_extra_info_dirty = true;
@@ -1282,6 +1286,7 @@ int dss_mgr_set_device(struct omap_overlay_manager *mgr,
struct omap_dss_device *dssdev)
{
int r;
+ struct omap_dss_writeback *wb = dssdev->wbdev;
mutex_lock(&apply_lock);
@@ -1301,10 +1306,13 @@ int dss_mgr_set_device(struct omap_overlay_manager *mgr,
dssdev->manager = mgr;
- if (dssdev->wbdev)
- mgr->output->writeback = dssdev;
- else
+ if (wb) {
+ r = dss_mgr_set_writeback(mgr, wb, true);
+ if (r)
+ goto err;
+ } else {
mgr->output->device = dssdev;
+ }
mutex_unlock(&apply_lock);
@@ -1319,11 +1327,11 @@ int dss_mgr_unset_device(struct omap_overlay_manager *mgr,
{
int r;
struct omap_dss_device *curr_dssdev;
+ struct omap_dss_writeback *wb = dssdev->wbdev;
mutex_lock(&apply_lock);
- curr_dssdev = dssdev->wbdev ? mgr->get_writeback(mgr) :
- mgr->get_display(mgr);
+ curr_dssdev = wb ? mgr->get_writeback(mgr) : mgr->get_display(mgr);
if (!curr_dssdev) {
DSSERR("failed to unset device, device not set.\n");
@@ -1342,10 +1350,13 @@ int dss_mgr_unset_device(struct omap_overlay_manager *mgr,
curr_dssdev->manager = NULL;
- if (dssdev->wbdev)
- mgr->output->writeback = NULL;
- else
+ if (wb) {
+ r = dss_mgr_set_writeback(mgr, wb, false);
+ if (r)
+ goto err;
+ } else {
mgr->output->device = NULL;
+ }
mutex_unlock(&apply_lock);
@@ -1593,6 +1604,36 @@ err:
return r;
}
+static int dss_mgr_set_writeback(struct omap_overlay_manager *mgr,
+ struct omap_dss_writeback *wb, bool set)
+{
+ struct wb_priv_data *wp = get_wb_priv(wb);
+ unsigned long flags;
+
+ spin_lock_irqsave(&data_lock, flags);
+
+ if (set) {
+ wp->channel_in = dss_wb_calc_channel_in(wb);
+ wp->extra_info_dirty = true;
+ mgr->output->writeback = wb->dssdev;
+
+ } else {
+ if (wp->enabled) {
+ DSSERR("Failed to unset writeback%d from manager%d\n",
+ wb->id, mgr->id);
+ spin_unlock_irqrestore(&data_lock, flags);
+ return -EINVAL;
+ }
+
+ wp->channel_in = -1;
+ mgr->output->writeback = NULL;
+ }
+
+ spin_unlock_irqrestore(&data_lock, flags);
+
+ return 0;
+}
+
int dss_wb_set_info(struct omap_dss_writeback *wb,
struct omap_dss_writeback_info *info)
{
diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
index 35ed6ca..a4d5504 100644
--- a/drivers/video/omap2/dss/dispc.c
+++ b/drivers/video/omap2/dss/dispc.c
@@ -899,6 +899,11 @@ static enum omap_channel dispc_ovl_get_channel_out(enum omap_plane plane)
return channel;
}
+void dispc_wb_set_channel_in(int id, enum dss_writeback_channel_in ch_in)
+{
+ return;
+}
+
static void dispc_ovl_set_burst_size(enum omap_plane plane,
enum omap_burst_size burst_size)
{
diff --git a/drivers/video/omap2/dss/dss.h b/drivers/video/omap2/dss/dss.h
index b4b60fc..1b128f1 100644
--- a/drivers/video/omap2/dss/dss.h
+++ b/drivers/video/omap2/dss/dss.h
@@ -113,6 +113,16 @@ enum dss_dsi_content_type {
DSS_DSI_CONTENT_GENERIC,
};
+enum dss_writeback_channel_in {
+ OMAP_DSS_WB_LCD1_MGR = 0,
+ OMAP_DSS_WB_LCD2_MGR = 1,
+ OMAP_DSS_WB_TV_MGR = 2,
+ OMAP_DSS_WB_OVL0 = 3,
+ OMAP_DSS_WB_OVL1 = 4,
+ OMAP_DSS_WB_OVL2 = 5,
+ OMAP_DSS_WB_OVL3 = 6,
+};
+
struct dss_clock_info {
/* rates that we get with dividers below */
unsigned long fck;
@@ -238,6 +248,7 @@ 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);
+enum dss_writeback_channel_in dss_wb_calc_channel_in(struct omap_dss_writeback *wb);
int dss_wb_simple_check(struct omap_dss_writeback *wb,
const struct omap_dss_writeback_info *info);
@@ -483,6 +494,7 @@ bool dispc_wb_go_busy(int id);
void dispc_wb_go(int id);
int dispc_wb_setup(int id, struct omap_dss_writeback_info *wi);
void dispc_wb_enable(int id, bool enable);
+void dispc_wb_set_channel_in(int id, enum dss_writeback_channel_in ch_in);
/* VENC */
#ifdef CONFIG_OMAP2_DSS_VENC
diff --git a/drivers/video/omap2/dss/writeback.c b/drivers/video/omap2/dss/writeback.c
index eefab4e..89738a4 100644
--- a/drivers/video/omap2/dss/writeback.c
+++ b/drivers/video/omap2/dss/writeback.c
@@ -122,6 +122,21 @@ int writeback_init_display(struct omap_dss_device *dssdev)
return 0;
}
+enum dss_writeback_channel_in dss_wb_calc_channel_in(struct omap_dss_writeback *wb)
+{
+ struct omap_overlay_manager *mgr = wb->dssdev->manager;
+
+ switch (mgr->id) {
+ case OMAP_DSS_CHANNEL_LCD2:
+ return OMAP_DSS_WB_LCD2_MGR;
+ case OMAP_DSS_CHANNEL_DIGIT:
+ return OMAP_DSS_WB_TV_MGR;
+ case OMAP_DSS_CHANNEL_LCD:
+ default:
+ return OMAP_DSS_WB_LCD1_MGR;
+ }
+}
+
int dss_wb_simple_check(struct omap_dss_writeback *wb,
const struct omap_dss_writeback_info *info)
{
--
1.7.4.1
--
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