[src/trunk]: src/sys/dev/ic ssdfb: prepare for supporting rgb color displays

[tnn <tnn%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/57a2e943bec3
branches:  trunk
changeset: 985029:57a2e943bec3
user:      tnn <tnn%NetBSD.org@localhost>
date:      Thu Aug 05 00:16:36 2021 +0000

description:
ssdfb: prepare for supporting rgb color displays

diffstat:

 sys/dev/ic/ssdfb.c    |  45 +++++++++++++++++++++++++++++++++++----------
 sys/dev/ic/ssdfbvar.h |  10 +++++++++-
 2 files changed, 44 insertions(+), 11 deletions(-)

diffs (133 lines):

diff -r 93b74a12be7b -r 57a2e943bec3 sys/dev/ic/ssdfb.c
--- a/sys/dev/ic/ssdfb.c        Thu Aug 05 00:02:51 2021 +0000
+++ b/sys/dev/ic/ssdfb.c        Thu Aug 05 00:16:36 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ssdfb.c,v 1.16 2021/08/05 00:02:51 tnn Exp $ */
+/* $NetBSD: ssdfb.c,v 1.17 2021/08/05 00:16:36 tnn Exp $ */
 
 /*
  * Copyright (c) 2019 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ssdfb.c,v 1.16 2021/08/05 00:02:51 tnn Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ssdfb.c,v 1.17 2021/08/05 00:16:36 tnn Exp $");
 
 #include "opt_ddb.h"
 
@@ -268,16 +268,35 @@
                goto out;
        }
 #ifdef SSDFB_USE_NATIVE_DEPTH
-       ri->ri_depth =  sc->sc_p->p_bits_per_pixel;
+       ri->ri_depth = sc->sc_p->p_bits_per_pixel;
 #else
-       ri->ri_depth =  8;
+       if (sc->sc_p->p_rgb && sc->sc_p->p_bits_per_pixel == 32) {
+               ri->ri_depth = sc->sc_p->p_bits_per_pixel;
+               ri->ri_rnum = 8;
+               ri->ri_gnum = 8;
+               ri->ri_bnum = 8;
+#if _BYTE_ORDER == _LITTLE_ENDIAN
+               ri->ri_rpos = 0;
+               ri->ri_gpos = 8;
+               ri->ri_bpos = 16;
+#else
+               ri->ri_rpos = 24;
+               ri->ri_gpos = 16;
+               ri->ri_bpos = 8;
+#endif
+       } else {
+               ri->ri_depth = 8;
+       }
 #endif
        ri->ri_font =   sc->sc_font;
        ri->ri_width =  sc->sc_p->p_width;
        ri->ri_height = sc->sc_p->p_height;
        ri->ri_stride = ri->ri_width * ri->ri_depth / 8;
        ri->ri_hw =     sc;
-       ri->ri_flg =    RI_FULLCLEAR | RI_FORCEMONO;
+       ri->ri_flg =    RI_FULLCLEAR;
+       if (!sc->sc_p->p_rgb) {
+               ri->ri_flg |= RI_FORCEMONO;
+       }
        sc->sc_ri_bits_len = round_page(ri->ri_stride * ri->ri_height);
        ri->ri_bits     = (u_char *)uvm_km_alloc(kernel_map, sc->sc_ri_bits_len,
                                                 0, UVM_KMF_WIRED);
@@ -290,7 +309,9 @@
        if (error)
                goto out;
 
-       ri->ri_caps &= ~WSSCREEN_WSCOLORS;
+       if (!sc->sc_p->p_rgb) {
+               ri->ri_caps &= ~WSSCREEN_WSCOLORS;
+       }
 
        /*
         * Save original emul ops & insert our damage notification hooks.
@@ -425,8 +446,10 @@
        case WSDISPLAYIO_GET_FBINFO:
                fbi = (struct wsdisplayio_fbinfo *)data;
                error = wsdisplayio_get_fbinfo(&sc->sc_ri, fbi);
-               fbi->fbi_subtype.fbi_cmapinfo.cmap_entries = cmaplen;
-               /* fbi->fbi_pixeltype = WSFB_GREYSCALE */;
+               if (!sc->sc_p->p_rgb) {
+                       fbi->fbi_subtype.fbi_cmapinfo.cmap_entries = cmaplen;
+                       /* fbi->fbi_pixeltype = WSFB_GREYSCALE */;
+               }
                return error;
        case WSDISPLAYIO_LINEBYTES:
                *(u_int *)data = sc->sc_ri.ri_stride;
@@ -483,6 +506,8 @@
                return 0;
 #endif
        case WSDISPLAYIO_GETCMAP:
+               if (sc->sc_p->p_rgb)
+                       return ENOTSUP;
                wc = (struct wsdisplay_cmap *)data;
                if (wc->index >= cmaplen ||
                    wc->count > cmaplen - wc->index)
@@ -1117,9 +1142,9 @@
         * Transfer rasops bitmap into gddram shadow buffer while keeping track
         * of the bounding box of the dirty region we scribbled over.
         */
-       x1 = sc->sc_p->p_width;
+       x1 = width;
        x2 = -1;
-       y1 = sc->sc_p->p_height;
+       y1 = height;
        y2 = -1;
        blockp = (uint16_t*)sc->sc_gddram;
        for (y = 0; y < height; y++) {
diff -r 93b74a12be7b -r 57a2e943bec3 sys/dev/ic/ssdfbvar.h
--- a/sys/dev/ic/ssdfbvar.h     Thu Aug 05 00:02:51 2021 +0000
+++ b/sys/dev/ic/ssdfbvar.h     Thu Aug 05 00:16:36 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ssdfbvar.h,v 1.7 2021/08/02 14:00:48 tnn Exp $ */
+/* $NetBSD: ssdfbvar.h,v 1.8 2021/08/05 00:16:36 tnn Exp $ */
 
 /*
  * Copyright (c) 2019 The NetBSD Foundation, Inc.
@@ -235,6 +235,13 @@
 #define SSD1353_CMD_SET_SECOND_PRECHARGE_SPEED         0x8a
        #define SSD1353_DEFAULT_SECOND_PRECHARGE_SPEED  2
 #define SSD1353_CMD_REMAP_COLOR_DEPTH                  0xa0
+       #define SSD1353_REMAP_NO_INCREMENT              __BIT(0)
+       #define SSD1353_REMAP_SEG_DIRECTION             __BIT(1)
+       #define SSD1353_REMAP_RGB                       __BIT(2)
+       #define SSD1353_REMAP_LR                        __BIT(3)
+       #define SSD1353_REMAP_COM_DIRECTION             __BIT(4)
+       #define SSD1353_REMAP_SPLIT_ODD_EVEN            __BIT(5)
+       #define SSD1353_REMAP_PIXEL_FORMAT_MASK         __BITS(7, 6)
 #define SSD1353_CMD_SET_DISPLAY_START_LINE             SSD1322_CMD_SET_DISPLAY_START_LINE
 #define SSD1353_CMD_SET_DISPLAY_OFFSET                 SSD1322_CMD_SET_DISPLAY_OFFSET
 #define SSD1353_CMD_SET_VERTICAL_SCROLL_AREA           SSDFB_CMD_SET_VERTICAL_SCROLL_AREA
@@ -305,6 +312,7 @@
        int                             p_width;
        int                             p_height;
        int                             p_bits_per_pixel;
+       bool                            p_rgb;
        int                             p_panel_shift;
        uint8_t                         p_fosc;
        uint8_t                         p_fosc_div;