Adds the support for NV12 color format. Added basic scaling support for the UV-plane in case of NV12 format. Contains chroma scaling (_dispc_set_scaling_uv) design and implemented by Lajos Molnar <molnar@xxxxxx> Signed-off-by: Amber Jain <amber@xxxxxx> --- drivers/video/omap2/dss/dispc.c | 201 +++++++++++++++++++++++++++++++------ drivers/video/omap2/dss/dss.h | 3 +- drivers/video/omap2/dss/manager.c | 5 +- include/video/omapdss.h | 1 + 4 files changed, 176 insertions(+), 34 deletions(-) diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c index 48717a9..1928e3e 100644 --- a/drivers/video/omap2/dss/dispc.c +++ b/drivers/video/omap2/dss/dispc.c @@ -110,6 +110,18 @@ static struct { #endif } dispc; +enum omap_color_component { + /* used for all color formats for OMAP3 and earlier + * and for RGB and Y color component on OMAP4 + */ + DISPC_COLOR_COMPONENT_RGB_Y = 1 << 0, + /* used for UV component for + * OMAP_DSS_COLOR_YUV2, OMAP_DSS_COLOR_UYVY, OMAP_DSS_COLOR_NV12 + * color formats on OMAP4 + */ + DISPC_COLOR_COMPONENT_UV = 1 << 1, +}; + static void _omap_dispc_set_irqs(void); static inline void dispc_write_reg(const u16 idx, u32 val) @@ -574,7 +586,8 @@ static void _dispc_write_firv2_reg(enum omap_plane plane, int reg, u32 value) } static void _dispc_set_scale_coef(enum omap_plane plane, int hscaleup, - int vscaleup, int five_taps) + int vscaleup, int five_taps, + enum omap_color_component color_comp) { /* Coefficients for horizontal up-sampling */ static const struct dispc_h_coef coef_hup[8] = { @@ -672,8 +685,14 @@ static void _dispc_set_scale_coef(enum omap_plane plane, int hscaleup, | FLD_VAL(v_coef[i].vc1, 23, 16) | FLD_VAL(v_coef[i].vc2, 31, 24); - _dispc_write_firh_reg(plane, i, h); - _dispc_write_firhv_reg(plane, i, hv); + if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) { + _dispc_write_firh_reg(plane, i, h); + _dispc_write_firhv_reg(plane, i, hv); + } else { + _dispc_write_firh2_reg(plane, i, h); + _dispc_write_firhv2_reg(plane, i, hv); + } + } if (five_taps) { @@ -681,7 +700,10 @@ static void _dispc_set_scale_coef(enum omap_plane plane, int hscaleup, u32 v; v = FLD_VAL(v_coef[i].vc00, 7, 0) | FLD_VAL(v_coef[i].vc22, 15, 8); - _dispc_write_firv_reg(plane, i, v); + if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) + _dispc_write_firv_reg(plane, i, v); + else + _dispc_write_firv2_reg(plane, i, v); } } } @@ -1090,18 +1112,27 @@ void dispc_enable_fifomerge(bool enable) enable_clocks(0); } -static void _dispc_set_fir(enum omap_plane plane, int hinc, int vinc) +static void _dispc_set_fir(enum omap_plane plane, + int hinc, int vinc, + enum omap_color_component color_comp) { u32 val; - u8 hinc_start, hinc_end, vinc_start, vinc_end; - dss_feat_get_reg_field(FEAT_REG_FIRHINC, &hinc_start, &hinc_end); - dss_feat_get_reg_field(FEAT_REG_FIRVINC, &vinc_start, &vinc_end); + if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) { + u8 hinc_start, hinc_end, vinc_start, vinc_end; - val = FLD_VAL(vinc, vinc_start, vinc_end) | - FLD_VAL(hinc, hinc_start, hinc_end); + dss_feat_get_reg_field(FEAT_REG_FIRHINC, + &hinc_start, &hinc_end); + dss_feat_get_reg_field(FEAT_REG_FIRVINC, + &vinc_start, &vinc_end); + val = FLD_VAL(vinc, vinc_start, vinc_end) | + FLD_VAL(hinc, hinc_start, hinc_end); - dispc_write_reg(DISPC_OVL_FIR(plane), val); + dispc_write_reg(DISPC_OVL_FIR(plane), val); + } else { + val = FLD_VAL(vinc, 28, 16) | FLD_VAL(hinc, 12, 0); + dispc_write_reg(DISPC_OVL_FIR2(plane), val); + } } static void _dispc_set_vid_accu0(enum omap_plane plane, int haccu, int vaccu) @@ -1148,31 +1179,40 @@ static void _dispc_set_vid_accu2_1(enum omap_plane plane, int haccu, int vaccu) dispc_write_reg(DISPC_OVL_ACCU2_1(plane), val); } -static void _dispc_set_scaling(enum omap_plane plane, +static void _dispc_set_scale_param(enum omap_plane plane, u16 orig_width, u16 orig_height, u16 out_width, u16 out_height, - bool ilace, bool five_taps, - bool fieldmode) + bool five_taps, u8 rotation, + enum omap_color_component color_comp) { - int fir_hinc; - int fir_vinc; + int fir_hinc, fir_vinc; int hscaleup, vscaleup; - int accu0 = 0; - int accu1 = 0; - u32 l; - - BUG_ON(plane == OMAP_DSS_GFX); hscaleup = orig_width <= out_width; vscaleup = orig_height <= out_height; - _dispc_set_scale_coef(plane, hscaleup, vscaleup, five_taps); + _dispc_set_scale_coef(plane, hscaleup, vscaleup, five_taps, color_comp); fir_hinc = 1024 * orig_width / out_width; fir_vinc = 1024 * orig_height / out_height; - _dispc_set_fir(plane, fir_hinc, fir_vinc); + _dispc_set_fir(plane, fir_hinc, fir_vinc, color_comp); +} + +static void _dispc_set_scaling_common(enum omap_plane plane, + u16 orig_width, u16 orig_height, + u16 out_width, u16 out_height, + bool ilace, bool five_taps, + bool fieldmode, enum omap_color_mode color_mode, + u8 rotation) +{ + int accu0 = 0; + int accu1 = 0; + u32 l; + _dispc_set_scale_param(plane, orig_width, orig_height, + out_width, out_height, five_taps, + rotation, DISPC_COLOR_COMPONENT_RGB_Y); l = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane)); /* RESIZEENABLE and VERTICALTAPS */ @@ -1184,8 +1224,8 @@ static void _dispc_set_scaling(enum omap_plane plane, /* VRESIZECONF and HRESIZECONF */ if (dss_has_feature(FEAT_RESIZECONF)) { l &= ~(0x3 << 7); - l |= hscaleup ? 0 : (1 << 7); - l |= vscaleup ? 0 : (1 << 8); + l |= (orig_width <= out_width) ? 0 : (1 << 7); + l |= (orig_height <= out_height) ? 0 : (1 << 8); } /* LINEBUFFERSPLIT */ @@ -1202,7 +1242,7 @@ static void _dispc_set_scaling(enum omap_plane plane, */ if (ilace && !fieldmode) { accu1 = 0; - accu0 = (fir_vinc / 2) & 0x3ff; + accu0 = ((1024 * orig_height / out_height) / 2) & 0x3ff; if (accu0 >= 1024/2) { accu1 = 1024/2; accu0 -= accu1; @@ -1213,6 +1253,93 @@ static void _dispc_set_scaling(enum omap_plane plane, _dispc_set_vid_accu1(plane, 0, accu1); } +static void _dispc_set_scaling_uv(enum omap_plane plane, + u16 orig_width, u16 orig_height, + u16 out_width, u16 out_height, + bool ilace, bool five_taps, + bool fieldmode, enum omap_color_mode color_mode, + u8 rotation) +{ + int scale_x = out_width != orig_width; + int scale_y = out_height != orig_height; + + if (!dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) + return; + if ((color_mode != OMAP_DSS_COLOR_YUV2 && + color_mode != OMAP_DSS_COLOR_UYVY && + color_mode != OMAP_DSS_COLOR_NV12)) { + /* reset chroma resampling for RGB formats */ + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane), 0, 8, 8); + return; + } + switch (color_mode) { + case OMAP_DSS_COLOR_NV12: + /* UV is subsampled by 2 vertically*/ + orig_height >>= 1; + /* UV is subsampled by 2 horz.*/ + orig_width >>= 1; + break; + case OMAP_DSS_COLOR_YUV2: + case OMAP_DSS_COLOR_UYVY: + /*For YUV422 with 90/270 rotation, + *we don't upsample chroma + */ + if (rotation == OMAP_DSS_ROT_0 || + rotation == OMAP_DSS_ROT_180) + /* UV is subsampled by 2 hrz*/ + orig_width >>= 1; + /* must use FIR for YUV422 if rotated */ + if (rotation != OMAP_DSS_ROT_0) + scale_x = scale_y = true; + break; + default: + BUG(); + } + + if (out_width != orig_width) + scale_x = true; + if (out_height != orig_height) + scale_y = true; + + _dispc_set_scale_param(plane, orig_width, orig_height, + out_width, out_height, five_taps, + rotation, DISPC_COLOR_COMPONENT_UV); + + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane), + (scale_x || scale_y) ? 1 : 0, 8, 8); + /* set H scaling */ + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), scale_x ? 1 : 0, 5, 5); + /* set V scaling */ + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), scale_y ? 1 : 0, 6, 6); + + _dispc_set_vid_accu2_0(plane, 0x80, 0); + _dispc_set_vid_accu2_1(plane, 0x80, 0); +} + +static void _dispc_set_scaling(enum omap_plane plane, + u16 orig_width, u16 orig_height, + u16 out_width, u16 out_height, + bool ilace, bool five_taps, + bool fieldmode, enum omap_color_mode color_mode, + u8 rotation) +{ + BUG_ON(plane == OMAP_DSS_GFX); + + _dispc_set_scaling_common(plane, + orig_width, orig_height, + out_width, out_height, + ilace, five_taps, + fieldmode, color_mode, + rotation); + + _dispc_set_scaling_uv(plane, + orig_width, orig_height, + out_width, out_height, + ilace, five_taps, + fieldmode, color_mode, + rotation); +} + static void _dispc_set_rotation_attrs(enum omap_plane plane, u8 rotation, bool mirroring, enum omap_color_mode color_mode) { @@ -1619,7 +1746,7 @@ static int _dispc_setup_plane(enum omap_plane plane, enum omap_dss_rotation_type rotation_type, u8 rotation, int mirror, u8 global_alpha, u8 pre_mult_alpha, - enum omap_channel channel) + enum omap_channel channel, u32 puv_addr) { const int maxdownscale = cpu_is_omap34xx() ? 4 : 2; bool five_taps = 0; @@ -1668,7 +1795,8 @@ static int _dispc_setup_plane(enum omap_plane plane, return -EINVAL; if (color_mode == OMAP_DSS_COLOR_YUV2 || - color_mode == OMAP_DSS_COLOR_UYVY) + color_mode == OMAP_DSS_COLOR_UYVY || + color_mode == OMAP_DSS_COLOR_NV12) cconv = 1; /* Must use 5-tap filter? */ @@ -1742,6 +1870,12 @@ static int _dispc_setup_plane(enum omap_plane plane, _dispc_set_plane_ba0(plane, paddr + offset0); _dispc_set_plane_ba1(plane, paddr + offset1); + if (OMAP_DSS_COLOR_NV12 == color_mode) { + _dispc_set_plane_ba0_uv(plane, puv_addr + offset0); + _dispc_set_plane_ba1_uv(plane, puv_addr + offset1); + } + + _dispc_set_row_inc(plane, row_inc); _dispc_set_pix_inc(plane, pix_inc); @@ -1755,7 +1889,8 @@ static int _dispc_setup_plane(enum omap_plane plane, if (plane != OMAP_DSS_GFX) { _dispc_set_scaling(plane, width, height, out_width, out_height, - ilace, five_taps, fieldmode); + ilace, five_taps, fieldmode, + color_mode, rotation); _dispc_set_vid_size(plane, out_width, out_height); _dispc_set_vid_color_conv(plane, cconv); } @@ -3367,11 +3502,12 @@ int dispc_setup_plane(enum omap_plane plane, bool ilace, enum omap_dss_rotation_type rotation_type, u8 rotation, bool mirror, u8 global_alpha, - u8 pre_mult_alpha, enum omap_channel channel) + u8 pre_mult_alpha, enum omap_channel channel, + u32 puv_addr) { int r = 0; - DSSDBG("dispc_setup_plane %d, pa %x, sw %d, %d,%d, %dx%d -> " + DSSDBG("dispc_setup_plane %d, pa %x, sw %d, %d, %d, %dx%d -> " "%dx%d, ilace %d, cmode %x, rot %d, mir %d chan %d\n", plane, paddr, screen_width, pos_x, pos_y, width, height, @@ -3390,7 +3526,8 @@ int dispc_setup_plane(enum omap_plane plane, rotation_type, rotation, mirror, global_alpha, - pre_mult_alpha, channel); + pre_mult_alpha, + channel, puv_addr); enable_clocks(0); diff --git a/drivers/video/omap2/dss/dss.h b/drivers/video/omap2/dss/dss.h index 6386f6b..8ab6d43 100644 --- a/drivers/video/omap2/dss/dss.h +++ b/drivers/video/omap2/dss/dss.h @@ -421,7 +421,8 @@ int dispc_setup_plane(enum omap_plane plane, enum omap_dss_rotation_type rotation_type, u8 rotation, bool mirror, u8 global_alpha, u8 pre_mult_alpha, - enum omap_channel channel); + enum omap_channel channel, + u32 puv_addr); bool dispc_go_busy(enum omap_channel channel); void dispc_go(enum omap_channel channel); diff --git a/drivers/video/omap2/dss/manager.c b/drivers/video/omap2/dss/manager.c index b40fe3d..9aeea50 100644 --- a/drivers/video/omap2/dss/manager.c +++ b/drivers/video/omap2/dss/manager.c @@ -393,6 +393,7 @@ struct overlay_cache_data { u32 paddr; void __iomem *vaddr; + u32 p_uv_addr; /* relevant for NV12 format only */ u16 screen_width; u16 width; u16 height; @@ -861,7 +862,8 @@ static int configure_overlay(enum omap_plane plane) c->mirror, c->global_alpha, c->pre_mult_alpha, - c->channel); + c->channel, + c->p_uv_addr); if (r) { /* this shouldn't happen */ @@ -1276,6 +1278,7 @@ static int omap_dss_mgr_apply(struct omap_overlay_manager *mgr) oc->paddr = ovl->info.paddr; oc->vaddr = ovl->info.vaddr; + oc->p_uv_addr = ovl->info.p_uv_addr; oc->screen_width = ovl->info.screen_width; oc->width = ovl->info.width; oc->height = ovl->info.height; diff --git a/include/video/omapdss.h b/include/video/omapdss.h index 7680c20..2670e55 100644 --- a/include/video/omapdss.h +++ b/include/video/omapdss.h @@ -305,6 +305,7 @@ struct omap_overlay_info { u32 paddr; void __iomem *vaddr; + u32 p_uv_addr; /* for NV12 format */ u16 screen_width; u16 width; u16 height; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html