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 <[email protected]>
---
 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

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