[PATCH 10/10] OMAP2PLUS: DSS2: FEATURES: Create a range param to get max downscaling

[Archit Taneja <archit@ti.com>]

Create a dss_range_param member called FEAT_PARAM_DOWNSCALE to get the maximum
downscaling possible on the current platform. Use this in
dispc_ovl_calc_scaling().

Signed-off-by: Archit Taneja <archit@ti.com>
---
 drivers/video/omap2/dss/dispc.c        |    2 +-
 drivers/video/omap2/dss/dss_features.c |    3 +++
 drivers/video/omap2/dss/dss_features.h |    1 +
 3 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
index 9f36db7..d447359 100644
--- a/drivers/video/omap2/dss/dispc.c
+++ b/drivers/video/omap2/dss/dispc.c
@@ -1716,7 +1716,7 @@ static int dispc_ovl_calc_scaling(enum omap_plane plane,
 		enum omap_color_mode color_mode, bool *five_taps)
 {
 	struct omap_overlay *ovl = omap_dss_get_overlay(plane);
-	const int maxdownscale = cpu_is_omap34xx() ? 4 : 2;
+	const int maxdownscale = dss_feat_get_param_max(FEAT_PARAM_DOWNSCALE);
 	unsigned long fclk = 0;
 
 	if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
diff --git a/drivers/video/omap2/dss/dss_features.c b/drivers/video/omap2/dss/dss_features.c
index 0299338..e5e94f4 100644
--- a/drivers/video/omap2/dss/dss_features.c
+++ b/drivers/video/omap2/dss/dss_features.c
@@ -303,6 +303,7 @@ static const struct dss_param_range omap2_dss_param_range[] = {
 	[FEAT_PARAM_DSIPLL_REGM_DSI]		= { 0, 0 },
 	[FEAT_PARAM_DSIPLL_FINT]		= { 0, 0 },
 	[FEAT_PARAM_DSIPLL_LPDIV]		= { 0, 0 },
+	[FEAT_PARAM_DOWNSCALE]			= { 1, 2 },
 };
 
 static const struct dss_param_range omap3_dss_param_range[] = {
@@ -314,6 +315,7 @@ static const struct dss_param_range omap3_dss_param_range[] = {
 	[FEAT_PARAM_DSIPLL_REGM_DSI]		= { 0, (1 << 4) - 1 },
 	[FEAT_PARAM_DSIPLL_FINT]		= { 750000, 2100000 },
 	[FEAT_PARAM_DSIPLL_LPDIV]		= { 1, (1 << 13) - 1},
+	[FEAT_PARAM_DOWNSCALE]			= { 1, 4 },
 };
 
 static const struct dss_param_range omap4_dss_param_range[] = {
@@ -325,6 +327,7 @@ static const struct dss_param_range omap4_dss_param_range[] = {
 	[FEAT_PARAM_DSIPLL_REGM_DSI]		= { 0, (1 << 5) - 1 },
 	[FEAT_PARAM_DSIPLL_FINT]		= { 500000, 2500000 },
 	[FEAT_PARAM_DSIPLL_LPDIV]		= { 0, (1 << 13) - 1 },
+	[FEAT_PARAM_DOWNSCALE]			= { 1, 4 },
 };
 
 /* OMAP2 DSS Features */
diff --git a/drivers/video/omap2/dss/dss_features.h b/drivers/video/omap2/dss/dss_features.h
index 879f3fb..6a6c05d 100644
--- a/drivers/video/omap2/dss/dss_features.h
+++ b/drivers/video/omap2/dss/dss_features.h
@@ -85,6 +85,7 @@ enum dss_range_param {
 	FEAT_PARAM_DSIPLL_REGM_DSI,
 	FEAT_PARAM_DSIPLL_FINT,
 	FEAT_PARAM_DSIPLL_LPDIV,
+	FEAT_PARAM_DOWNSCALE,
 };
 
 /* DSS Feature Functions */
-- 
1.7.1