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Integer scaling (IS) is a nearest-neighbor upscaling technique that simply scales up the existing pixels by an integer (i.e., whole number) multiplier.Nearest-neighbor (NN) interpolation works by filling in the missing color values in the upscaled image with that of the coordinate-mapped nearest source pixel value. Both IS and NN preserve the clarity of the original image. Integer scaling is particularly useful for pixel art games that rely on sharp, blocky images to deliver their distinctive look. Introduce functions to configure the scaler filter coefficients to enable nearest-neighbor filtering. Bspec: 49247 changes since v6: * Trust compiler, remove pointless inline keyword from cnl_coef_tap() & cnl_nearest_filter_coef() functions (Ville) changes since v4: * Make cnl_coef_tap(), cnl_nearest_filter_coef() inline (Uma) changes since v3: * None changes since v2: * Move APIs from 5/5 into this patch. * Change filter programming related function names to cnl_*, move filter select bits related code into inline function (Ville) changes since v1: * Rearrange skl_scaler_setup_nearest_neighbor_filter() to iterate the registers directly instead of the phases and taps (Ville) changes since RFC: * Refine the skl_scaler_setup_nearest_neighbor_filter() logic (Ville) Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Uma Shankar <uma.shankar@intel.com> Signed-off-by: Shashank Sharma <shashank.sharma@intel.com> Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20201020161427.6941-4-pankaj.laxminarayan.bharadiya@intel.com |
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| dvo_ch7xxx.c | ||
| dvo_ch7017.c | ||
| dvo_ivch.c | ||
| dvo_ns2501.c | ||
| dvo_sil164.c | ||
| dvo_tfp410.c | ||
| icl_dsi.c | ||
| intel_acpi.c | ||
| intel_acpi.h | ||
| intel_atomic.c | ||
| intel_atomic.h | ||
| intel_atomic_plane.c | ||
| intel_atomic_plane.h | ||
| intel_audio.c | ||
| intel_audio.h | ||
| intel_bios.c | ||
| intel_bios.h | ||
| intel_bw.c | ||
| intel_bw.h | ||
| intel_cdclk.c | ||
| intel_cdclk.h | ||
| intel_color.c | ||
| intel_color.h | ||
| intel_combo_phy.c | ||
| intel_combo_phy.h | ||
| intel_connector.c | ||
| intel_connector.h | ||
| intel_crt.c | ||
| intel_crt.h | ||
| intel_csr.c | ||
| intel_csr.h | ||
| intel_ddi.c | ||
| intel_ddi.h | ||
| intel_de.h | ||
| intel_display.c | ||
| intel_display.h | ||
| intel_display_debugfs.c | ||
| intel_display_debugfs.h | ||
| intel_display_power.c | ||
| intel_display_power.h | ||
| intel_display_types.h | ||
| intel_dp.c | ||
| intel_dp.h | ||
| intel_dp_aux_backlight.c | ||
| intel_dp_aux_backlight.h | ||
| intel_dp_hdcp.c | ||
| intel_dp_link_training.c | ||
| intel_dp_link_training.h | ||
| intel_dp_mst.c | ||
| intel_dp_mst.h | ||
| intel_dpio_phy.c | ||
| intel_dpio_phy.h | ||
| intel_dpll_mgr.c | ||
| intel_dpll_mgr.h | ||
| intel_dsb.c | ||
| intel_dsb.h | ||
| intel_dsi.c | ||
| intel_dsi.h | ||
| intel_dsi_dcs_backlight.c | ||
| intel_dsi_dcs_backlight.h | ||
| intel_dsi_vbt.c | ||
| intel_dvo.c | ||
| intel_dvo.h | ||
| intel_dvo_dev.h | ||
| intel_fbc.c | ||
| intel_fbc.h | ||
| intel_fbdev.c | ||
| intel_fbdev.h | ||
| intel_fifo_underrun.c | ||
| intel_fifo_underrun.h | ||
| intel_frontbuffer.c | ||
| intel_frontbuffer.h | ||
| intel_global_state.c | ||
| intel_global_state.h | ||
| intel_gmbus.c | ||
| intel_gmbus.h | ||
| intel_hdcp.c | ||
| intel_hdcp.h | ||
| intel_hdmi.c | ||
| intel_hdmi.h | ||
| intel_hotplug.c | ||
| intel_hotplug.h | ||
| intel_lpe_audio.c | ||
| intel_lpe_audio.h | ||
| intel_lspcon.c | ||
| intel_lspcon.h | ||
| intel_lvds.c | ||
| intel_lvds.h | ||
| intel_opregion.c | ||
| intel_opregion.h | ||
| intel_overlay.c | ||
| intel_overlay.h | ||
| intel_panel.c | ||
| intel_panel.h | ||
| intel_pipe_crc.c | ||
| intel_pipe_crc.h | ||
| intel_psr.c | ||
| intel_psr.h | ||
| intel_quirks.c | ||
| intel_quirks.h | ||
| intel_sdvo.c | ||
| intel_sdvo.h | ||
| intel_sdvo_regs.h | ||
| intel_sprite.c | ||
| intel_sprite.h | ||
| intel_tc.c | ||
| intel_tc.h | ||
| intel_tv.c | ||
| intel_tv.h | ||
| intel_vbt_defs.h | ||
| intel_vdsc.c | ||
| intel_vdsc.h | ||
| intel_vga.c | ||
| intel_vga.h | ||
| vlv_dsi.c | ||
| vlv_dsi_pll.c | ||