drm: omapdrm: Move PCD, LINEWIDTH and DOWNSCALE features to dispc driver

The FEAT_PARAM_DSS_PCD, FEAT_PARAM_LINEWIDTH and FEAT_PARAM_DOWNSCALE
features are specific to the DISPC, move them from the omap_dss_features
structure to the dispc driver.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

3 files changed, 39 insertions, 36 deletions

diff --git a/drivers/gpu/drm/omapdrm/dss/dispc.c b/drivers/gpu/drm/omapdrm/dss/dispc.c
index 23f887ce4936..49c9c46428f9 100644
--- a/drivers/gpu/drm/omapdrm/dss/dispc.c
+++ b/drivers/gpu/drm/omapdrm/dss/dispc.c
@@ -105,6 +105,9 @@ struct dispc_features {
         u16 mgr_height_max;
         unsigned long max_lcd_pclk;
         unsigned long max_tv_pclk;
+        unsigned int max_downscale;
+        unsigned int max_line_width;
+        unsigned int min_pcd;
         int (*calc_scaling) (unsigned long pclk, unsigned long lclk,
                 const struct videomode *vm,
                 u16 width, u16 height, u16 out_width, u16 out_height,
@@ -2207,8 +2210,7 @@ static int dispc_ovl_calc_scaling_24xx(unsigned long pclk, unsigned long lclk,
         int error;
         u16 in_width, in_height;
         int min_factor = min(*decim_x, *decim_y);
-        const int maxsinglelinewidth =
-                        dss_feat_get_param_max(FEAT_PARAM_LINEWIDTH);
+        const int maxsinglelinewidth = dispc.feat->max_line_width;
 
         *five_taps = false;
 
@@ -2252,8 +2254,7 @@ static int dispc_ovl_calc_scaling_34xx(unsigned long pclk, unsigned long lclk,
 {
         int error;
         u16 in_width, in_height;
-        const int maxsinglelinewidth =
-                        dss_feat_get_param_max(FEAT_PARAM_LINEWIDTH);
+        const int maxsinglelinewidth = dispc.feat->max_line_width;
 
         do {
                 in_height = height / *decim_y;
@@ -2338,9 +2339,8 @@ static int dispc_ovl_calc_scaling_44xx(unsigned long pclk, unsigned long lclk,
         u16 in_width, in_width_max;
         int decim_x_min = *decim_x;
         u16 in_height = height / *decim_y;
-        const int maxsinglelinewidth =
-                                dss_feat_get_param_max(FEAT_PARAM_LINEWIDTH);
-        const int maxdownscale = dss_feat_get_param_max(FEAT_PARAM_DOWNSCALE);
+        const int maxsinglelinewidth = dispc.feat->max_line_width;
+        const int maxdownscale = dispc.feat->max_downscale;
 
         if (mem_to_mem) {
                 in_width_max = out_width * maxdownscale;
@@ -2400,7 +2400,7 @@ static int dispc_ovl_calc_scaling(unsigned long pclk, unsigned long lclk,
                 int *x_predecim, int *y_predecim, u16 pos_x,
                 enum omap_dss_rotation_type rotation_type, bool mem_to_mem)
 {
-        const int maxdownscale = dss_feat_get_param_max(FEAT_PARAM_DOWNSCALE);
+        const int maxdownscale = dispc.feat->max_downscale;
         const int max_decim_limit = 16;
         unsigned long core_clk = 0;
         int decim_x, decim_y, ret;
@@ -3481,7 +3481,7 @@ int dispc_calc_clock_rates(unsigned long dispc_fclk_rate,
         return 0;
 }
 
-bool dispc_div_calc(unsigned long dispc,
+bool dispc_div_calc(unsigned long dispc_freq,
                 unsigned long pck_min, unsigned long pck_max,
                 dispc_div_calc_func func, void *data)
 {
@@ -3499,19 +3499,19 @@ bool dispc_div_calc(unsigned long dispc,
         min_fck_per_pck = 0;
 #endif
 
-        pckd_hw_min = dss_feat_get_param_min(FEAT_PARAM_DSS_PCD);
-        pckd_hw_max = dss_feat_get_param_max(FEAT_PARAM_DSS_PCD);
+        pckd_hw_min = dispc.feat->min_pcd;
+        pckd_hw_max = 255;
 
         lck_max = dss_feat_get_param_max(FEAT_PARAM_DSS_FCK);
 
         pck_min = pck_min ? pck_min : 1;
         pck_max = pck_max ? pck_max : ULONG_MAX;
 
-        lckd_start = max(DIV_ROUND_UP(dispc, lck_max), 1ul);
-        lckd_stop = min(dispc / pck_min, 255ul);
+        lckd_start = max(DIV_ROUND_UP(dispc_freq, lck_max), 1ul);
+        lckd_stop = min(dispc_freq / pck_min, 255ul);
 
         for (lckd = lckd_start; lckd <= lckd_stop; ++lckd) {
-                lck = dispc / lckd;
+                lck = dispc_freq / lckd;
 
                 pckd_start = max(DIV_ROUND_UP(lck, pck_max), pckd_hw_min);
                 pckd_stop = min(lck / pck_min, pckd_hw_max);
@@ -4047,6 +4047,13 @@ static const struct dispc_features omap24xx_dispc_feats = {
         .mgr_width_max          =       2048,
         .mgr_height_max         =       2048,
         .max_lcd_pclk           =       66500000,
+        .max_downscale          =       2,
+        /*
+         * Assume the line width buffer to be 768 pixels as OMAP2 DISPC scaler
+         * cannot scale an image width larger than 768.
+         */
+        .max_line_width         =       768,
+        .min_pcd                =       2,
         .calc_scaling           =       dispc_ovl_calc_scaling_24xx,
         .calc_core_clk          =       calc_core_clk_24xx,
         .num_fifos              =       3,
@@ -4078,6 +4085,9 @@ static const struct dispc_features omap34xx_rev1_0_dispc_feats = {
         .mgr_height_max         =       2048,
         .max_lcd_pclk           =       173000000,
         .max_tv_pclk            =       59000000,
+        .max_downscale          =       4,
+        .max_line_width         =       1024,
+        .min_pcd                =       1,
         .calc_scaling           =       dispc_ovl_calc_scaling_34xx,
         .calc_core_clk          =       calc_core_clk_34xx,
         .num_fifos              =       3,
@@ -4109,6 +4119,9 @@ static const struct dispc_features omap34xx_rev3_0_dispc_feats = {
         .mgr_height_max         =       2048,
         .max_lcd_pclk           =       173000000,
         .max_tv_pclk            =       59000000,
+        .max_downscale          =       4,
+        .max_line_width         =       1024,
+        .min_pcd                =       1,
         .calc_scaling           =       dispc_ovl_calc_scaling_34xx,
         .calc_core_clk          =       calc_core_clk_34xx,
         .num_fifos              =       3,
@@ -4140,6 +4153,9 @@ static const struct dispc_features omap36xx_dispc_feats = {
         .mgr_height_max         =       2048,
         .max_lcd_pclk           =       173000000,
         .max_tv_pclk            =       59000000,
+        .max_downscale          =       4,
+        .max_line_width         =       1024,
+        .min_pcd                =       1,
         .calc_scaling           =       dispc_ovl_calc_scaling_34xx,
         .calc_core_clk          =       calc_core_clk_34xx,
         .num_fifos              =       3,
@@ -4171,6 +4187,9 @@ static const struct dispc_features am43xx_dispc_feats = {
         .mgr_height_max         =       2048,
         .max_lcd_pclk           =       173000000,
         .max_tv_pclk            =       59000000,
+        .max_downscale          =       4,
+        .max_line_width         =       1024,
+        .min_pcd                =       1,
         .calc_scaling           =       dispc_ovl_calc_scaling_34xx,
         .calc_core_clk          =       calc_core_clk_34xx,
         .num_fifos              =       3,
@@ -4202,6 +4221,9 @@ static const struct dispc_features omap44xx_dispc_feats = {
         .mgr_height_max         =       2048,
         .max_lcd_pclk           =       170000000,
         .max_tv_pclk            =       185625000,
+        .max_downscale          =       4,
+        .max_line_width         =       2048,
+        .min_pcd                =       1,
         .calc_scaling           =       dispc_ovl_calc_scaling_44xx,
         .calc_core_clk          =       calc_core_clk_44xx,
         .num_fifos              =       5,
@@ -4238,6 +4260,9 @@ static const struct dispc_features omap54xx_dispc_feats = {
         .mgr_height_max         =       4096,
         .max_lcd_pclk           =       170000000,
         .max_tv_pclk            =       186000000,
+        .max_downscale          =       4,
+        .max_line_width         =       2048,
+        .min_pcd                =       1,
         .calc_scaling           =       dispc_ovl_calc_scaling_44xx,
         .calc_core_clk          =       calc_core_clk_44xx,
         .num_fifos              =       5,
diff --git a/drivers/gpu/drm/omapdrm/dss/dss_features.c b/drivers/gpu/drm/omapdrm/dss/dss_features.c
index 1d35cc80b363..c904d80a5920 100644
--- a/drivers/gpu/drm/omapdrm/dss/dss_features.c
+++ b/drivers/gpu/drm/omapdrm/dss/dss_features.c
@@ -102,41 +102,22 @@ static const enum omap_dss_output_id omap5_dss_supported_outputs[] = {
 
 static const struct dss_param_range omap2_dss_param_range[] = {
         [FEAT_PARAM_DSS_FCK]                    = { 0, 133000000 },
-        [FEAT_PARAM_DSS_PCD]                    = { 2, 255 },
-        [FEAT_PARAM_DOWNSCALE]                  = { 1, 2 },
-        /*
-         * Assuming the line width buffer to be 768 pixels as OMAP2 DISPC
-         * scaler cannot scale a image with width more than 768.
-         */
-        [FEAT_PARAM_LINEWIDTH]                  = { 1, 768 },
 };
 
 static const struct dss_param_range omap3_dss_param_range[] = {
         [FEAT_PARAM_DSS_FCK]                    = { 0, 173000000 },
-        [FEAT_PARAM_DSS_PCD]                    = { 1, 255 },
-        [FEAT_PARAM_DOWNSCALE]                  = { 1, 4 },
-        [FEAT_PARAM_LINEWIDTH]                  = { 1, 1024 },
 };
 
 static const struct dss_param_range am43xx_dss_param_range[] = {
         [FEAT_PARAM_DSS_FCK]                    = { 0, 200000000 },
-        [FEAT_PARAM_DSS_PCD]                    = { 1, 255 },
-        [FEAT_PARAM_DOWNSCALE]                  = { 1, 4 },
-        [FEAT_PARAM_LINEWIDTH]                  = { 1, 1024 },
 };
 
 static const struct dss_param_range omap4_dss_param_range[] = {
         [FEAT_PARAM_DSS_FCK]                    = { 0, 186000000 },
-        [FEAT_PARAM_DSS_PCD]                    = { 1, 255 },
-        [FEAT_PARAM_DOWNSCALE]                  = { 1, 4 },
-        [FEAT_PARAM_LINEWIDTH]                  = { 1, 2048 },
 };
 
 static const struct dss_param_range omap5_dss_param_range[] = {
         [FEAT_PARAM_DSS_FCK]                    = { 0, 209250000 },
-        [FEAT_PARAM_DSS_PCD]                    = { 1, 255 },
-        [FEAT_PARAM_DOWNSCALE]                  = { 1, 4 },
-        [FEAT_PARAM_LINEWIDTH]                  = { 1, 2048 },
 };
 
 /* OMAP2 DSS Features */
diff --git a/drivers/gpu/drm/omapdrm/dss/dss_features.h b/drivers/gpu/drm/omapdrm/dss/dss_features.h
index 289c5dc1ef09..b1179fb25866 100644
--- a/drivers/gpu/drm/omapdrm/dss/dss_features.h
+++ b/drivers/gpu/drm/omapdrm/dss/dss_features.h
@@ -27,9 +27,6 @@
 
 enum dss_range_param {
         FEAT_PARAM_DSS_FCK,
-        FEAT_PARAM_DSS_PCD,
-        FEAT_PARAM_DOWNSCALE,
-        FEAT_PARAM_LINEWIDTH,
 };
 
 /* DSS Feature Functions */