Add Color Phase Rotation (CPR) support and sysfs files to enable CPR and
to set the CPR coefficient matrix.
CPR is enabled via manager?/cpr_enable file, and the coefficient matrix
is set via manager?/cpr_coef file. The values in cpr_coef are in the
following order:
RR RG RB GR GG GB BR BG BB
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
---
drivers/video/omap2/dss/dispc.c | 34 +++++++++++
drivers/video/omap2/dss/dss.h | 3 +
drivers/video/omap2/dss/manager.c | 114 +++++++++++++++++++++++++++++++++++++
include/video/omapdss.h | 9 +++
4 files changed, 160 insertions(+), 0 deletions(-)
diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
index eac768f..0151f16 100644
--- a/drivers/video/omap2/dss/dispc.c
+++ b/drivers/video/omap2/dss/dispc.c
@@ -1082,6 +1082,40 @@ void dispc_enable_gamma_table(bool enable)
REG_FLD_MOD(DISPC_CONFIG, enable, 9, 9);
}
+void dispc_enable_cpr(enum omap_channel channel, bool enable)
+{
+ u16 reg;
+
+ if (channel == OMAP_DSS_CHANNEL_LCD)
+ reg = DISPC_CONFIG;
+ else if (channel == OMAP_DSS_CHANNEL_LCD2)
+ reg = DISPC_CONFIG2;
+ else
+ return;
+
+ REG_FLD_MOD(reg, enable, 15, 15);
+}
+
+void dispc_set_cpr_coef(enum omap_channel channel,
+ struct omap_dss_cpr_coefs *coefs)
+{
+ u32 coef_r, coef_g, coef_b;
+
+ if (channel != OMAP_DSS_CHANNEL_LCD && channel != OMAP_DSS_CHANNEL_LCD2)
+ return;
+
+ coef_r = FLD_VAL(coefs->rr, 31, 22) | FLD_VAL(coefs->rg, 20, 11) |
+ FLD_VAL(coefs->rb, 9, 0);
+ coef_g = FLD_VAL(coefs->gr, 31, 22) | FLD_VAL(coefs->gg, 20, 11) |
+ FLD_VAL(coefs->gb, 9, 0);
+ coef_b = FLD_VAL(coefs->br, 31, 22) | FLD_VAL(coefs->bg, 20, 11) |
+ FLD_VAL(coefs->bb, 9, 0);
+
+ dispc_write_reg(DISPC_CPR_COEF_R(channel), coef_r);
+ dispc_write_reg(DISPC_CPR_COEF_G(channel), coef_g);
+ dispc_write_reg(DISPC_CPR_COEF_B(channel), coef_b);
+}
+
static void _dispc_set_vid_color_conv(enum omap_plane plane, bool enable)
{
u32 val;
diff --git a/drivers/video/omap2/dss/dss.h b/drivers/video/omap2/dss/dss.h
index ce17a61..9dc5c00 100644
--- a/drivers/video/omap2/dss/dss.h
+++ b/drivers/video/omap2/dss/dss.h
@@ -398,6 +398,9 @@ void dispc_setup_plane_fifo(enum omap_plane plane, u32 low, u32 high);
void dispc_enable_fifomerge(bool enable);
void dispc_set_burst_size(enum omap_plane plane,
enum omap_burst_size burst_size);
+void dispc_enable_cpr(enum omap_channel channel, bool enable);
+void dispc_set_cpr_coef(enum omap_channel channel,
+ struct omap_dss_cpr_coefs *coefs);
void dispc_set_plane_ba0(enum omap_plane plane, u32 paddr);
void dispc_set_plane_ba1(enum omap_plane plane, u32 paddr);
diff --git a/drivers/video/omap2/dss/manager.c b/drivers/video/omap2/dss/manager.c
index 4691b81..ad76c5b 100644
--- a/drivers/video/omap2/dss/manager.c
+++ b/drivers/video/omap2/dss/manager.c
@@ -275,6 +275,108 @@ static ssize_t manager_alpha_blending_enabled_store(
return size;
}
+static ssize_t manager_cpr_enable_show(struct omap_overlay_manager *mgr,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", mgr->info.cpr_enable);
+}
+
+static ssize_t manager_cpr_enable_store(struct omap_overlay_manager *mgr,
+ const char *buf, size_t size)
+{
+ struct omap_overlay_manager_info info;
+ int v;
+ int r;
+ bool enable;
+
+ if (!dss_has_feature(FEAT_CPR))
+ return -ENODEV;
+
+ r = kstrtoint(buf, 0, &v);
+ if (r)
+ return r;
+
+ enable = !!v;
+
+ mgr->get_manager_info(mgr, &info);
+
+ if (info.cpr_enable == enable)
+ return size;
+
+ info.cpr_enable = enable;
+
+ r = mgr->set_manager_info(mgr, &info);
+ if (r)
+ return r;
+
+ r = mgr->apply(mgr);
+ if (r)
+ return r;
+
+ return size;
+}
+
+static ssize_t manager_cpr_coef_show(struct omap_overlay_manager *mgr,
+ char *buf)
+{
+ struct omap_overlay_manager_info info;
+
+ mgr->get_manager_info(mgr, &info);
+
+ return snprintf(buf, PAGE_SIZE,
+ "%d %d %d %d %d %d %d %d %d\n",
+ info.cpr_coefs.rr,
+ info.cpr_coefs.rg,
+ info.cpr_coefs.rb,
+ info.cpr_coefs.gr,
+ info.cpr_coefs.gg,
+ info.cpr_coefs.gb,
+ info.cpr_coefs.br,
+ info.cpr_coefs.bg,
+ info.cpr_coefs.bb);
+}
+
+static ssize_t manager_cpr_coef_store(struct omap_overlay_manager *mgr,
+ const char *buf, size_t size)
+{
+ struct omap_overlay_manager_info info;
+ struct omap_dss_cpr_coefs coefs;
+ int r, i;
+ s16 *arr;
+
+ if (!dss_has_feature(FEAT_CPR))
+ return -ENODEV;
+
+ if (sscanf(buf, "%hd %hd %hd %hd %hd %hd %hd %hd %hd",
+ &coefs.rr, &coefs.rg, &coefs.rb,
+ &coefs.gr, &coefs.gg, &coefs.gb,
+ &coefs.br, &coefs.bg, &coefs.bb) != 9)
+ return -EINVAL;
+
+ arr = (s16[]){ coefs.rr, coefs.rg, coefs.rb,
+ coefs.gr, coefs.gg, coefs.gb,
+ coefs.br, coefs.bg, coefs.bb };
+
+ for (i = 0; i < 9; ++i) {
+ if (arr[i] < -512 || arr[i] > 511)
+ return -EINVAL;
+ }
+
+ mgr->get_manager_info(mgr, &info);
+
+ info.cpr_coefs = coefs;
+
+ r = mgr->set_manager_info(mgr, &info);
+ if (r)
+ return r;
+
+ r = mgr->apply(mgr);
+ if (r)
+ return r;
+
+ return size;
+}
+
struct manager_attribute {
struct attribute attr;
ssize_t (*show)(struct omap_overlay_manager *, char *);
@@ -300,6 +402,12 @@ static MANAGER_ATTR(trans_key_enabled, S_IRUGO|S_IWUSR,
static MANAGER_ATTR(alpha_blending_enabled, S_IRUGO|S_IWUSR,
manager_alpha_blending_enabled_show,
manager_alpha_blending_enabled_store);
+static MANAGER_ATTR(cpr_enable, S_IRUGO|S_IWUSR,
+ manager_cpr_enable_show,
+ manager_cpr_enable_store);
+static MANAGER_ATTR(cpr_coef, S_IRUGO|S_IWUSR,
+ manager_cpr_coef_show,
+ manager_cpr_coef_store);
static struct attribute *manager_sysfs_attrs[] = {
@@ -310,6 +418,8 @@ static struct attribute *manager_sysfs_attrs[] = {
&manager_attr_trans_key_value.attr,
&manager_attr_trans_key_enabled.attr,
&manager_attr_alpha_blending_enabled.attr,
+ &manager_attr_cpr_enable.attr,
+ &manager_attr_cpr_coef.attr,
NULL
};
@@ -858,6 +968,10 @@ static void configure_manager(enum omap_channel channel)
dispc_set_trans_key(channel, mi->trans_key_type, mi->trans_key);
dispc_enable_trans_key(channel, mi->trans_enabled);
dispc_enable_alpha_blending(channel, mi->alpha_enabled);
+ if (dss_has_feature(FEAT_CPR)) {
+ dispc_enable_cpr(channel, mi->cpr_enable);
+ dispc_set_cpr_coef(channel, &mi->cpr_coefs);
+ }
}
/* configure_dispc() tries to write values from cache to shadow registers.
diff --git a/include/video/omapdss.h b/include/video/omapdss.h
index e02823e..3b55ef2 100644
--- a/include/video/omapdss.h
+++ b/include/video/omapdss.h
@@ -290,6 +290,12 @@ extern const struct omap_video_timings omap_dss_pal_timings;
extern const struct omap_video_timings omap_dss_ntsc_timings;
#endif
+struct omap_dss_cpr_coefs {
+ s16 rr, rg, rb;
+ s16 gr, gg, gb;
+ s16 br, bg, bb;
+};
+
struct omap_overlay_info {
bool enabled;
@@ -349,6 +355,9 @@ struct omap_overlay_manager_info {
bool trans_enabled;
bool alpha_enabled;
+
+ bool cpr_enable;
+ struct omap_dss_cpr_coefs cpr_coefs;
};
struct omap_overlay_manager {
--
1.7.4.1
--
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