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Diffstat (limited to 'board/freescale/common/fsl_diu_fb.c')
-rw-r--r--board/freescale/common/fsl_diu_fb.c656
1 files changed, 656 insertions, 0 deletions
diff --git a/board/freescale/common/fsl_diu_fb.c b/board/freescale/common/fsl_diu_fb.c
new file mode 100644
index 0000000000..a9999d393f
--- /dev/null
+++ b/board/freescale/common/fsl_diu_fb.c
@@ -0,0 +1,656 @@
+/*
+ * Copyright 2007 Freescale Semiconductor, Inc.
+ * York Sun <yorksun@freescale.com>
+ *
+ * FSL DIU Framebuffer driver
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+
+#include <common.h>
+#include <i2c.h>
+#include <malloc.h>
+
+#ifdef CONFIG_FSL_DIU_FB
+
+#include "fsl_diu_fb.h"
+
+
+#ifdef DEBUG
+#define DPRINTF(fmt, args...) printf("%s: " fmt,__FUNCTION__,## args)
+#else
+#define DPRINTF(fmt, args...)
+#endif
+
+struct fb_var_screeninfo {
+ unsigned int xres; /* visible resolution */
+ unsigned int yres;
+
+ unsigned int bits_per_pixel; /* guess what */
+
+ /* Timing: All values in pixclocks, except pixclock (of course) */
+ unsigned int pixclock; /* pixel clock in ps (pico seconds) */
+ unsigned int left_margin; /* time from sync to picture */
+ unsigned int right_margin; /* time from picture to sync */
+ unsigned int upper_margin; /* time from sync to picture */
+ unsigned int lower_margin;
+ unsigned int hsync_len; /* length of horizontal sync */
+ unsigned int vsync_len; /* length of vertical sync */
+ unsigned int sync; /* see FB_SYNC_* */
+ unsigned int vmode; /* see FB_VMODE_* */
+ unsigned int rotate; /* angle we rotate counter clockwise */
+};
+
+struct fb_info {
+ struct fb_var_screeninfo var; /* Current var */
+ unsigned long smem_start; /* Start of frame buffer mem */
+ /* (physical address) */
+ unsigned int smem_len; /* Length of frame buffer mem */
+ unsigned int type; /* see FB_TYPE_* */
+ unsigned int line_length; /* length of a line in bytes */
+
+ char *screen_base;
+ unsigned long screen_size;
+ int logo_height;
+ unsigned int logo_size;
+};
+
+struct fb_videomode {
+ const char *name; /* optional */
+ unsigned int refresh; /* optional */
+ unsigned int xres;
+ unsigned int yres;
+ unsigned int pixclock;
+ unsigned int left_margin;
+ unsigned int right_margin;
+ unsigned int upper_margin;
+ unsigned int lower_margin;
+ unsigned int hsync_len;
+ unsigned int vsync_len;
+ unsigned int sync;
+ unsigned int vmode;
+ unsigned int flag;
+};
+
+#define FB_SYNC_VERT_HIGH_ACT 2 /* vertical sync high active */
+#define FB_SYNC_COMP_HIGH_ACT 8 /* composite sync high active */
+#define FB_VMODE_NONINTERLACED 0 /* non interlaced */
+
+/*
+ * These parameters give default parameters
+ * for video output 1024x768,
+ * FIXME - change timing to proper amounts
+ * hsync 31.5kHz, vsync 60Hz
+ */
+static struct fb_videomode fsl_diu_mode_1024 = {
+ .refresh = 60,
+ .xres = 1024,
+ .yres = 768,
+ .pixclock = 15385,
+ .left_margin = 160,
+ .right_margin = 24,
+ .upper_margin = 29,
+ .lower_margin = 3,
+ .hsync_len = 136,
+ .vsync_len = 6,
+ .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ .vmode = FB_VMODE_NONINTERLACED
+};
+
+static struct fb_videomode fsl_diu_mode_1280 = {
+ .name = "1280x1024-60",
+ .refresh = 60,
+ .xres = 1280,
+ .yres = 1024,
+ .pixclock = 9375,
+ .left_margin = 38,
+ .right_margin = 128,
+ .upper_margin = 2,
+ .lower_margin = 7,
+ .hsync_len = 216,
+ .vsync_len = 37,
+ .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ .vmode = FB_VMODE_NONINTERLACED
+};
+
+/*
+ * These are the fields of area descriptor(in DDR memory) for every plane
+ */
+struct diu_ad {
+ /* Word 0(32-bit) in DDR memory */
+ unsigned int pix_fmt; /* hard coding pixel format */
+ /* Word 1(32-bit) in DDR memory */
+ unsigned int addr;
+ /* Word 2(32-bit) in DDR memory */
+ unsigned int src_size_g_alpha;
+ /* Word 3(32-bit) in DDR memory */
+ unsigned int aoi_size;
+ /* Word 4(32-bit) in DDR memory */
+ unsigned int offset_xyi;
+ /* Word 5(32-bit) in DDR memory */
+ unsigned int offset_xyd;
+ /* Word 6(32-bit) in DDR memory */
+ unsigned int ckmax_r:8;
+ unsigned int ckmax_g:8;
+ unsigned int ckmax_b:8;
+ unsigned int res9:8;
+ /* Word 7(32-bit) in DDR memory */
+ unsigned int ckmin_r:8;
+ unsigned int ckmin_g:8;
+ unsigned int ckmin_b:8;
+ unsigned int res10:8;
+ /* Word 8(32-bit) in DDR memory */
+ unsigned int next_ad;
+ /* Word 9(32-bit) in DDR memory, just for 64-bit aligned */
+ unsigned int res1;
+ unsigned int res2;
+ unsigned int res3;
+}__attribute__ ((packed));
+
+/*
+ * DIU register map
+ */
+struct diu {
+ unsigned int desc[3];
+ unsigned int gamma;
+ unsigned int pallete;
+ unsigned int cursor;
+ unsigned int curs_pos;
+ unsigned int diu_mode;
+ unsigned int bgnd;
+ unsigned int bgnd_wb;
+ unsigned int disp_size;
+ unsigned int wb_size;
+ unsigned int wb_mem_addr;
+ unsigned int hsyn_para;
+ unsigned int vsyn_para;
+ unsigned int syn_pol;
+ unsigned int thresholds;
+ unsigned int int_status;
+ unsigned int int_mask;
+ unsigned int colorbar[8];
+ unsigned int filling;
+ unsigned int plut;
+} __attribute__ ((packed));
+
+struct diu_hw {
+ struct diu *diu_reg;
+ volatile unsigned int mode; /* DIU operation mode */
+};
+
+struct diu_addr {
+ unsigned char * paddr; /* Virtual address */
+ unsigned int offset;
+};
+
+#define FSL_DIU_BASE_OFFSET 0x2C000 /* Offset of Display Interface Unit */
+
+/*
+ * Modes of operation of DIU
+ */
+#define MFB_MODE0 0 /* DIU off */
+#define MFB_MODE1 1 /* All three planes output to display */
+#define MFB_MODE2 2 /* Plane 1 to display,
+ * planes 2+3 written back to memory */
+#define MFB_MODE3 3 /* All three planes written back to memory */
+#define MFB_MODE4 4 /* Color bar generation */
+
+#define MAX_CURS 32
+
+
+
+static struct fb_info fsl_fb_info;
+static struct diu_addr gamma, cursor;
+static struct diu_ad fsl_diu_fb_ad __attribute__ ((aligned(32)));
+static struct diu_ad dummy_ad __attribute__ ((aligned(32)));
+static unsigned char *dummy_fb;
+static struct diu_hw dr = {
+ .mode = MFB_MODE1,
+};
+
+int fb_enabled = 0;
+int fb_initialized = 0;
+const int default_xres = 1280;
+const int default_pixel_format = 0x88882317;
+
+static int map_video_memory(struct fb_info *info, unsigned long bytes_align);
+static void enable_lcdc(void);
+static void disable_lcdc(void);
+static int fsl_diu_enable_panel(struct fb_info *info);
+static int fsl_diu_disable_panel(struct fb_info *info);
+static int allocate_buf(struct diu_addr *buf, u32 size, u32 bytes_align);
+static u32 get_busfreq(void);
+
+
+int fsl_diu_init(int xres,
+ unsigned int pixel_format,
+ int gamma_fix,
+ unsigned char *splash_bmp)
+{
+ struct fb_videomode *fsl_diu_mode_db;
+ struct diu_ad *ad = &fsl_diu_fb_ad;
+ struct diu *hw;
+ struct fb_info *info = &fsl_fb_info;
+ struct fb_var_screeninfo *var = &info->var;
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile ccsr_gur_t *gur = &immap->im_gur;
+ volatile unsigned int *guts_clkdvdr = &gur->clkdvdr;
+ unsigned char *gamma_table_base;
+ unsigned int i, j;
+ unsigned long speed_ccb, temp, pixval;
+
+ DPRINTF("Enter fsl_diu_init\n");
+ dr.diu_reg = (struct diu *) (CFG_IMMR + FSL_DIU_BASE_OFFSET);
+ hw = (struct diu *) dr.diu_reg;
+
+ disable_lcdc();
+
+ if (xres == 1280) {
+ fsl_diu_mode_db = &fsl_diu_mode_1280;
+ } else {
+ fsl_diu_mode_db = &fsl_diu_mode_1024;
+ }
+
+ if (0 == fb_initialized) {
+ allocate_buf(&gamma, 768, 32);
+ DPRINTF("gamma is allocated @ 0x%x\n",
+ (unsigned int)gamma.paddr);
+ allocate_buf(&cursor, MAX_CURS * MAX_CURS * 2, 32);
+ DPRINTF("curosr is allocated @ 0x%x\n",
+ (unsigned int)cursor.paddr);
+
+ /* create a dummy fb and dummy ad */
+ dummy_fb = malloc(64);
+ if (NULL == dummy_fb) {
+ printf("Cannot allocate dummy fb\n");
+ return -1;
+ }
+ dummy_ad.addr = cpu_to_le32((unsigned int)dummy_fb);
+ dummy_ad.pix_fmt = 0x88882317;
+ dummy_ad.src_size_g_alpha = 0x04400000; /* alpha = 0 */
+ dummy_ad.aoi_size = 0x02000400;
+ dummy_ad.offset_xyi = 0;
+ dummy_ad.offset_xyd = 0;
+ dummy_ad.next_ad = 0;
+ /* Memory allocation for framebuffer */
+ if (map_video_memory(info, 32)) {
+ printf("Unable to allocate fb memory 1\n");
+ return -1;
+ }
+ } else {
+ memset(info->screen_base, 0, info->smem_len);
+ }
+
+ dr.diu_reg->desc[0] = (unsigned int) &dummy_ad;
+ dr.diu_reg->desc[1] = (unsigned int) &dummy_ad;
+ dr.diu_reg->desc[2] = (unsigned int) &dummy_ad;
+ DPRINTF("dummy dr.diu_reg->desc[0] = 0x%x\n", dr.diu_reg->desc[0]);
+ DPRINTF("dummy desc[0] = 0x%x\n", hw->desc[0]);
+
+ /* read mode info */
+ var->xres = fsl_diu_mode_db->xres;
+ var->yres = fsl_diu_mode_db->yres;
+ var->bits_per_pixel = 32;
+ var->pixclock = fsl_diu_mode_db->pixclock;
+ var->left_margin = fsl_diu_mode_db->left_margin;
+ var->right_margin = fsl_diu_mode_db->right_margin;
+ var->upper_margin = fsl_diu_mode_db->upper_margin;
+ var->lower_margin = fsl_diu_mode_db->lower_margin;
+ var->hsync_len = fsl_diu_mode_db->hsync_len;
+ var->vsync_len = fsl_diu_mode_db->vsync_len;
+ var->sync = fsl_diu_mode_db->sync;
+ var->vmode = fsl_diu_mode_db->vmode;
+ info->line_length = var->xres * var->bits_per_pixel / 8;
+ info->logo_size = 0;
+ info->logo_height = 0;
+
+ ad->pix_fmt = pixel_format;
+ ad->addr = cpu_to_le32((unsigned int)info->screen_base);
+ ad->src_size_g_alpha
+ = cpu_to_le32((var->yres << 12) | var->xres);
+ /* fix me. AOI should not be greater than display size */
+ ad->aoi_size = cpu_to_le32(( var->yres << 16) | var->xres);
+ ad->offset_xyi = 0;
+ ad->offset_xyd = 0;
+
+ /* Disable chroma keying function */
+ ad->ckmax_r = 0;
+ ad->ckmax_g = 0;
+ ad->ckmax_b = 0;
+
+ ad->ckmin_r = 255;
+ ad->ckmin_g = 255;
+ ad->ckmin_b = 255;
+
+ gamma_table_base = gamma.paddr;
+ DPRINTF("gamma_table_base is allocated @ 0x%x\n",
+ (unsigned int)gamma_table_base);
+
+ /* Prep for DIU init - gamma table */
+
+ for (i = 0; i <= 2; i++)
+ for (j = 0; j <= 255; j++)
+ *gamma_table_base++ = j;
+
+ if (gamma_fix == 1) { /* fix the gamma */
+ DPRINTF("Fix gamma table\n");
+ gamma_table_base = gamma.paddr;
+ for (i = 0; i < 256*3; i++) {
+ gamma_table_base[i] = (gamma_table_base[i] << 2)
+ | ((gamma_table_base[i] >> 6) & 0x03);
+ }
+ }
+
+ DPRINTF("update-lcdc: HW - %p\n Disabling DIU\n", hw);
+
+ /* Program DIU registers */
+
+ hw->gamma = (unsigned int) gamma.paddr;
+ hw->cursor= (unsigned int) cursor.paddr;
+ hw->bgnd = 0x007F7F7F; /* BGND */
+ hw->bgnd_wb = 0; /* BGND_WB */
+ hw->disp_size = var->yres << 16 | var->xres; /* DISP SIZE */
+ hw->wb_size = 0; /* WB SIZE */
+ hw->wb_mem_addr = 0; /* WB MEM ADDR */
+ hw->hsyn_para = var->left_margin << 22 | /* BP_H */
+ var->hsync_len << 11 | /* PW_H */
+ var->right_margin; /* FP_H */
+ hw->vsyn_para = var->upper_margin << 22 | /* BP_V */
+ var->vsync_len << 11 | /* PW_V */
+ var->lower_margin; /* FP_V */
+
+ /* Pixel Clock configuration */
+ DPRINTF("DIU: Bus Frequency = %d\n", get_busfreq());
+ speed_ccb = get_busfreq();
+
+ DPRINTF("DIU pixclock in ps - %d\n", var->pixclock);
+ temp = 1;
+ temp *= 1000000000;
+ temp /= var->pixclock;
+ temp *= 1000;
+ pixval = speed_ccb / temp;
+ DPRINTF("DIU pixval = %lu\n", pixval);
+
+ hw->syn_pol = 0; /* SYNC SIGNALS POLARITY */
+ hw->thresholds = 0x00037800; /* The Thresholds */
+ hw->int_status = 0; /* INTERRUPT STATUS */
+ hw->int_mask = 0; /* INT MASK */
+ hw->plut = 0x01F5F666;
+
+ /* Modify PXCLK in GUTS CLKDVDR */
+ DPRINTF("DIU: Current value of CLKDVDR = 0x%08x\n", *guts_clkdvdr);
+ temp = *guts_clkdvdr & 0x2000FFFF;
+ *guts_clkdvdr = temp; /* turn off clock */
+ *guts_clkdvdr = temp | 0x80000000 | ((pixval & 0x1F) << 16);
+ DPRINTF("DIU: Modified value of CLKDVDR = 0x%08x\n", *guts_clkdvdr);
+
+ fb_initialized = 1;
+
+ if (splash_bmp) {
+ info->logo_height = fsl_diu_display_bmp(splash_bmp, 0, 0, 0);
+ info->logo_size = info->logo_height * info->line_length;
+ DPRINTF("logo height %d, logo_size 0x%x\n",
+ info->logo_height,info->logo_size);
+ }
+
+ /* Enable the DIU */
+ fsl_diu_enable_panel(info);
+ enable_lcdc();
+
+ return 0;
+}
+
+char *fsl_fb_open(struct fb_info **info)
+{
+ *info = &fsl_fb_info;
+ return (char *) ((unsigned int)(*info)->screen_base
+ + (*info)->logo_size);
+}
+
+void fsl_diu_close(void)
+{
+ struct fb_info *info = &fsl_fb_info;
+ fsl_diu_disable_panel(info);
+}
+
+static int fsl_diu_enable_panel(struct fb_info *info)
+{
+ struct diu *hw = dr.diu_reg;
+ struct diu_ad *ad = &fsl_diu_fb_ad;
+
+ DPRINTF("Entered: enable_panel\n");
+ if (hw->desc[0] != (unsigned int)ad)
+ hw->desc[0] = (unsigned int)ad;
+ DPRINTF("desc[0] = 0x%x\n", hw->desc[0]);
+ return 0;
+}
+
+static int fsl_diu_disable_panel(struct fb_info *info)
+{
+ struct diu *hw = dr.diu_reg;
+
+ DPRINTF("Entered: disable_panel\n");
+ if (hw->desc[0] != (unsigned int)&dummy_ad)
+ hw->desc[0] = (unsigned int)&dummy_ad;
+ return 0;
+}
+
+static int map_video_memory(struct fb_info *info, unsigned long bytes_align)
+{
+ unsigned long offset;
+ unsigned long mask;
+
+ DPRINTF("Entered: map_video_memory\n");
+ /* allocate maximum 1280*1024 with 32bpp */
+ info->smem_len = 1280 * 4 *1024 + bytes_align;
+ DPRINTF("MAP_VIDEO_MEMORY: smem_len = %d\n", info->smem_len);
+ info->screen_base = malloc(info->smem_len);
+ if (info->screen_base == NULL) {
+ printf("Unable to allocate fb memory\n");
+ return -1;
+ }
+ info->smem_start = (unsigned int) info->screen_base;
+ mask = bytes_align - 1;
+ offset = (unsigned long)info->screen_base & mask;
+ if (offset) {
+ info->screen_base += offset;
+ info->smem_len = info->smem_len - (bytes_align - offset);
+ } else
+ info->smem_len = info->smem_len - bytes_align;
+
+ info->screen_size = info->smem_len;
+
+ DPRINTF("Allocated fb @ 0x%08lx, size=%d.\n",
+ info->smem_start, info->smem_len);
+
+ return 0;
+}
+
+static void enable_lcdc(void)
+{
+ struct diu *hw = dr.diu_reg;
+
+ DPRINTF("Entered: enable_lcdc, fb_enabled = %d\n", fb_enabled);
+ if (!fb_enabled) {
+ hw->diu_mode = dr.mode;
+ fb_enabled++;
+ }
+ DPRINTF("diu_mode = %d\n", hw->diu_mode);
+}
+
+static void disable_lcdc(void)
+{
+ struct diu *hw = dr.diu_reg;
+
+ DPRINTF("Entered: disable_lcdc, fb_enabled = %d\n", fb_enabled);
+ if (fb_enabled) {
+ hw->diu_mode = 0;
+ fb_enabled = 0;
+ }
+}
+
+static u32 get_busfreq(void)
+{
+ u32 fs_busfreq = 0;
+
+ fs_busfreq = get_bus_freq(0);
+ return fs_busfreq;
+}
+
+/*
+ * Align to 64-bit(8-byte), 32-byte, etc.
+ */
+static int allocate_buf(struct diu_addr *buf, u32 size, u32 bytes_align)
+{
+ u32 offset, ssize;
+ u32 mask;
+
+ DPRINTF("Entered: allocate_buf\n");
+ ssize = size + bytes_align;
+ buf->paddr = malloc(ssize);
+ if (!buf->paddr)
+ return -1;
+
+ memset(buf->paddr, 0, ssize);
+ mask = bytes_align - 1;
+ offset = (u32)buf->paddr & mask;
+ if (offset) {
+ buf->offset = bytes_align - offset;
+ buf->paddr = (unsigned char *) ((u32)buf->paddr + offset);
+ } else
+ buf->offset = 0;
+ return 0;
+}
+
+int fsl_diu_display_bmp(unsigned char *bmp,
+ int xoffset,
+ int yoffset,
+ int transpar)
+{
+ struct fb_info *info = &fsl_fb_info;
+ unsigned char r, g, b;
+ unsigned int *fb_t, val;
+ unsigned char *bitmap;
+ unsigned int palette[256];
+ int width, height, bpp, ncolors, raster, offset, x, y, i, k, cpp;
+
+ if (!bmp) {
+ printf("Must supply a bitmap address\n");
+ return 0;
+ }
+
+ raster = bmp[10] + (bmp[11] << 8) + (bmp[12] << 16) + (bmp[13] << 24);
+ width = (bmp[21] << 24) | (bmp[20] << 16) | (bmp[19] << 8) | bmp[18];
+ height = (bmp[25] << 24) | (bmp[24] << 16) | (bmp[23] << 8) | bmp[22];
+ bpp = (bmp[29] << 8) | (bmp[28]);
+ ncolors = bmp[46] + (bmp[47] << 8) + (bmp[48] << 16) + (bmp[49] << 24);
+ bitmap = bmp + raster;
+ cpp = info->var.bits_per_pixel / 8;
+
+ DPRINTF("bmp = 0x%08x\n", (unsigned int)bmp);
+ DPRINTF("bitmap = 0x%08x\n", (unsigned int)bitmap);
+ DPRINTF("width = %d\n", width);
+ DPRINTF("height = %d\n", height);
+ DPRINTF("bpp = %d\n", bpp);
+ DPRINTF("ncolors = %d\n", ncolors);
+
+ DPRINTF("xres = %d\n", info->var.xres);
+ DPRINTF("yres = %d\n", info->var.yres);
+ DPRINTF("Screen_base = 0x%x\n", (unsigned int)info->screen_base);
+
+ if (((width+xoffset) > info->var.xres) ||
+ ((height+yoffset) > info->var.yres)) {
+ printf("bitmap is out of range, image too large or too much offset\n");
+ return 0;
+ }
+ if (bpp < 24) {
+ for (i = 0, offset = 54; i < ncolors; i++, offset += 4)
+ palette[i] = (bmp[offset+2] << 16)
+ + (bmp[offset+1] << 8) + bmp[offset];
+ }
+
+ switch (bpp) {
+ case 1:
+ for (y = height - 1; y >= 0; y--) {
+ fb_t = (unsigned int *) ((unsigned int)info->screen_base + (((y+yoffset) * info->var.xres) + xoffset)*cpp);
+ for (x = 0; x < width; x += 8) {
+ b = *bitmap++;
+ for (k = 0; k < 8; k++) {
+ if (b & 0x80)
+ *fb_t = palette[1];
+ else
+ *fb_t = palette[0];
+ b = b << 1;
+ }
+ }
+ for (i = (width / 2) % 4; i > 0; i--)
+ bitmap++;
+ }
+ break;
+ case 4:
+ for (y = height - 1; y >= 0; y--) {
+ fb_t = (unsigned int *) ((unsigned int)info->screen_base + (((y+yoffset) * info->var.xres) + xoffset)*cpp);
+ for (x = 0; x < width; x += 2) {
+ b = *bitmap++;
+ r = (b >> 4) & 0x0F;
+ g = b & 0x0F;
+ *fb_t++ = palette[r];
+ *fb_t++ = palette[g];
+ }
+ for (i = (width / 2) % 4; i > 0; i--)
+ bitmap++;
+ }
+ break;
+ case 8:
+ for (y = height - 1; y >= 0; y--) {
+ fb_t = (unsigned int *) ((unsigned int)info->screen_base + (((y+yoffset) * info->var.xres) + xoffset)*cpp);
+ for (x = 0; x < width; x++) {
+ *fb_t++ = palette[ *bitmap++ ];
+ }
+ for (i = (width / 2) % 4; i > 0; i--)
+ bitmap++;
+ }
+ break;
+ case 24:
+ for (y = height - 1; y >= 0; y--) {
+ fb_t = (unsigned int *) ((unsigned int)info->screen_base + (((y+yoffset) * info->var.xres) + xoffset)*cpp);
+ for (x = 0; x < width; x++) {
+ b = *bitmap++;
+ g = *bitmap++;
+ r = *bitmap++;
+ val = (r << 16) + (g << 8) + b;
+ *fb_t++ = val;
+ }
+ for (; (x % 4) != 0; x++) /* 4-byte alignment */
+ bitmap++;
+ }
+ break;
+ }
+
+ return height;
+}
+
+void fsl_diu_clear_screen(void)
+{
+ struct fb_info *info = &fsl_fb_info;
+
+ memset(info->screen_base, 0, info->smem_len);
+}
+#endif /* CONFIG_FSL_DIU_FB */
generated by cgit (git 2.34.1) at 2024-12-27 21:44:39 +0000