/*
- * Copyright 2007, 2010 Freescale Semiconductor, Inc.
- * York Sun <yorksun@freescale.com>
+ * Copyright 2007, 2010-2011 Freescale Semiconductor, Inc.
+ * Authors: York Sun <yorksun@freescale.com>
+ * Timur Tabi <timur@freescale.com>
*
* FSL DIU Framebuffer driver
*
*/
#include <common.h>
-#include <i2c.h>
#include <malloc.h>
#include <asm/io.h>
+#include "videomodes.h"
+#include <video_fb.h>
#include <fsl_diu_fb.h>
+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 int smem_len; /* Length of frame buffer mem */
+ unsigned int type; /* see FB_TYPE_* */
+ unsigned int line_length; /* length of a line in bytes */
+
+ void *screen_base;
+ unsigned long screen_size;
+};
+
struct fb_videomode {
const char *name; /* optional */
unsigned int refresh; /* optional */
/* This setting is used for the ifm pdm360ng with PRIMEVIEW PM070WL3 */
static struct fb_videomode fsl_diu_mode_800 = {
+ .name = "800x600-60",
.refresh = 60,
.xres = 800,
.yres = 480,
* hsync 31.5kHz, vsync 60Hz
*/
static struct fb_videomode fsl_diu_mode_1024 = {
+ .name = "1024x768-60",
.refresh = 60,
.xres = 1024,
.yres = 768,
*/
struct diu_ad {
/* Word 0(32-bit) in DDR memory */
- unsigned int pix_fmt; /* hard coding pixel format */
+ __le32 pix_fmt; /* hard coding pixel format */
/* Word 1(32-bit) in DDR memory */
- unsigned int addr;
+ __le32 addr;
/* Word 2(32-bit) in DDR memory */
- unsigned int src_size_g_alpha;
+ __le32 src_size_g_alpha;
/* Word 3(32-bit) in DDR memory */
- unsigned int aoi_size;
+ __le32 aoi_size;
/* Word 4(32-bit) in DDR memory */
- unsigned int offset_xyi;
+ __le32 offset_xyi;
/* Word 5(32-bit) in DDR memory */
- unsigned int offset_xyd;
+ __le32 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;
+ __le32 ckmax_r:8;
+ __le32 ckmax_g:8;
+ __le32 ckmax_b:8;
+ __le32 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;
+ __le32 ckmin_r:8;
+ __le32 ckmin_g:8;
+ __le32 ckmin_b:8;
+ __le32 res10:8;
/* Word 8(32-bit) in DDR memory */
- unsigned int next_ad;
+ __le32 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));
+ __le32 res[3];
+} __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;
+ __be32 desc[3];
+ __be32 gamma;
+ __be32 pallete;
+ __be32 cursor;
+ __be32 curs_pos;
+ __be32 diu_mode;
+ __be32 bgnd;
+ __be32 bgnd_wb;
+ __be32 disp_size;
+ __be32 wb_size;
+ __be32 wb_mem_addr;
+ __be32 hsyn_para;
+ __be32 vsyn_para;
+ __be32 syn_pol;
+ __be32 thresholds;
+ __be32 int_status;
+ __be32 int_mask;
+ __be32 colorbar[8];
+ __be32 filling;
+ __be32 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;
+ void *vaddr; /* Virtual address */
+ u32 paddr; /* 32-bit physical address */
+ unsigned int offset; /* Alignment offset */
};
+static struct fb_info info;
+
/*
- * Modes of operation of DIU
+ * Align to 64-bit(8-byte), 32-byte, etc.
*/
-#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,
-};
+static int allocate_buf(struct diu_addr *buf, u32 size, u32 bytes_align)
+{
+ u32 offset, ssize;
+ u32 mask;
-int fb_enabled = 0;
-int fb_initialized = 0;
-const int default_xres = 1280;
-const int default_pixel_format = 0x88882317;
+ ssize = size + bytes_align;
+ buf->vaddr = malloc(ssize);
+ if (!buf->vaddr)
+ return -1;
-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);
-void diu_set_pixel_clock(unsigned int pixclock);
+ memset(buf->vaddr, 0, ssize);
+ mask = bytes_align - 1;
+ offset = (u32)buf->vaddr & mask;
+ if (offset) {
+ buf->offset = bytes_align - offset;
+ buf->vaddr += offset;
+ } else
+ buf->offset = 0;
-int fsl_diu_init(int xres, unsigned int pixel_format, int gamma_fix)
+ buf->paddr = virt_to_phys(buf->vaddr);
+ return 0;
+}
+
+/*
+ * Allocate a framebuffer and an Area Descriptor that points to it. Both
+ * are created in the same memory block. The Area Descriptor is updated to
+ * point to the framebuffer memory. Memory is aligned as needed.
+ */
+static struct diu_ad *allocate_fb(unsigned int xres, unsigned int yres,
+ unsigned int depth, void **fb)
{
- 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;
- unsigned char *gamma_table_base;
- unsigned int i, j;
+ unsigned long size = xres * yres * depth;
+ struct diu_addr addr;
+ struct diu_ad *ad;
+ size_t ad_size = roundup(sizeof(struct diu_ad), 32);
+
+ /*
+ * Allocate a memory block that holds the Area Descriptor and the
+ * frame buffer right behind it. To keep the code simple, everything
+ * is aligned on a 32-byte address.
+ */
+ if (allocate_buf(&addr, ad_size + size, 32) < 0)
+ return NULL;
- debug("Enter fsl_diu_init\n");
- dr.diu_reg = (struct diu *) (CONFIG_SYS_DIU_ADDR);
- hw = (struct diu *) dr.diu_reg;
+ ad = addr.vaddr;
+ ad->addr = cpu_to_le32(addr.paddr + ad_size);
+ ad->aoi_size = cpu_to_le32((yres << 16) | xres);
+ ad->src_size_g_alpha = cpu_to_le32((yres << 12) | xres);
+ ad->offset_xyi = 0;
+ ad->offset_xyd = 0;
- disable_lcdc();
+ if (fb)
+ *fb = addr.vaddr + ad_size;
+
+ return ad;
+}
+
+int fsl_diu_init(int xres, u32 pixel_format, int gamma_fix)
+{
+ struct fb_videomode *fsl_diu_mode_db;
+ struct diu_ad *ad;
+ struct diu *hw = (struct diu *)CONFIG_SYS_DIU_ADDR;
+ u8 *gamma_table_base;
+ unsigned int i, j;
+ struct diu_ad *dummy_ad;
+ struct diu_addr gamma;
+ struct diu_addr cursor;
switch (xres) {
case 800:
fsl_diu_mode_db = &fsl_diu_mode_1024;
}
- if (0 == fb_initialized) {
- allocate_buf(&gamma, 768, 32);
- debug("gamma is allocated @ 0x%x\n",
- (unsigned int)gamma.paddr);
- allocate_buf(&cursor, MAX_CURS * MAX_CURS * 2, 32);
- debug("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;
- }
+ /* The AD struct for the dummy framebuffer and the FB itself */
+ dummy_ad = allocate_fb(2, 4, 4, NULL);
+ if (!dummy_ad) {
+ printf("DIU: Out of memory\n");
+ return -1;
}
-
- memset(info->screen_base, 0, info->smem_len);
-
- out_be32(&dr.diu_reg->desc[0], (int)&dummy_ad);
- out_be32(&dr.diu_reg->desc[1], (int)&dummy_ad);
- out_be32(&dr.diu_reg->desc[2], (int)&dummy_ad);
- debug("dummy dr.diu_reg->desc[0] = 0x%x\n", dr.diu_reg->desc[0]);
- debug("dummy desc[0] = 0x%x\n", hw->desc[0]);
+ dummy_ad->pix_fmt = 0x88883316;
/* 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.var.xres = fsl_diu_mode_db->xres;
+ info.var.yres = fsl_diu_mode_db->yres;
+ info.var.bits_per_pixel = 32;
+ info.var.pixclock = fsl_diu_mode_db->pixclock;
+ info.var.left_margin = fsl_diu_mode_db->left_margin;
+ info.var.right_margin = fsl_diu_mode_db->right_margin;
+ info.var.upper_margin = fsl_diu_mode_db->upper_margin;
+ info.var.lower_margin = fsl_diu_mode_db->lower_margin;
+ info.var.hsync_len = fsl_diu_mode_db->hsync_len;
+ info.var.vsync_len = fsl_diu_mode_db->vsync_len;
+ info.var.sync = fsl_diu_mode_db->sync;
+ info.var.vmode = fsl_diu_mode_db->vmode;
+ info.line_length = info.var.xres * info.var.bits_per_pixel / 8;
+
+ /* Memory allocation for framebuffer */
+ info.smem_len =
+ info.var.xres * info.var.yres * (info.var.bits_per_pixel / 8);
+ ad = allocate_fb(info.var.xres, info.var.yres,
+ info.var.bits_per_pixel / 8, &info.screen_base);
+ if (!ad) {
+ printf("DIU: Out of memory\n");
+ return -1;
+ }
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->ckmin_g = 255;
ad->ckmin_b = 255;
- gamma_table_base = gamma.paddr;
- debug("gamma_table_base is allocated @ 0x%x\n",
- (unsigned int)gamma_table_base);
-
- /* Prep for DIU init - gamma table */
-
+ /* Initialize the gamma table */
+ if (allocate_buf(&gamma, 256 * 3, 32) < 0) {
+ printf("DIU: Out of memory\n");
+ return -1;
+ }
+ gamma_table_base = gamma.vaddr;
for (i = 0; i <= 2; i++)
- for (j = 0; j <= 255; j++)
+ for (j = 0; j < 256; j++)
*gamma_table_base++ = j;
if (gamma_fix == 1) { /* fix the gamma */
- debug("Fix gamma table\n");
- gamma_table_base = gamma.paddr;
- for (i = 0; i < 256*3; i++) {
+ gamma_table_base = gamma.vaddr;
+ for (i = 0; i < 256 * 3; i++) {
gamma_table_base[i] = (gamma_table_base[i] << 2)
| ((gamma_table_base[i] >> 6) & 0x03);
}
}
- debug("update-lcdc: HW - %p\n Disabling DIU\n", hw);
+ /* Initialize the cursor */
+ if (allocate_buf(&cursor, 32 * 32 * 2, 32) < 0) {
+ printf("DIU: Can't alloc cursor data\n");
+ return -1;
+ }
/* Program DIU registers */
+ out_be32(&hw->diu_mode, 0); /* Temporarily disable the DIU */
- out_be32(&hw->gamma, (int)gamma.paddr);
- out_be32(&hw->cursor, (int)cursor.paddr);
+ out_be32(&hw->gamma, gamma.paddr);
+ out_be32(&hw->cursor, cursor.paddr);
out_be32(&hw->bgnd, 0x007F7F7F);
- out_be32(&hw->bgnd_wb, 0); /* BGND_WB */
- out_be32(&hw->disp_size, var->yres << 16 | var->xres); /* DISP SIZE */
- out_be32(&hw->wb_size, 0); /* WB SIZE */
- out_be32(&hw->wb_mem_addr, 0); /* WB MEM ADDR */
- out_be32(&hw->hsyn_para, var->left_margin << 22 | /* BP_H */
- var->hsync_len << 11 | /* PW_H */
- var->right_margin); /* FP_H */
-
- out_be32(&hw->vsyn_para, var->upper_margin << 22 | /* BP_V */
- var->vsync_len << 11 | /* PW_V */
- var->lower_margin); /* FP_V */
-
- out_be32(&hw->syn_pol, 0); /* SYNC SIGNALS POLARITY */
- out_be32(&hw->thresholds, 0x00037800); /* The Thresholds */
- out_be32(&hw->int_status, 0); /* INTERRUPT STATUS */
- out_be32(&hw->int_mask, 0); /* INT MASK */
+ out_be32(&hw->bgnd_wb, 0);
+ out_be32(&hw->disp_size, info.var.yres << 16 | info.var.xres);
+ out_be32(&hw->wb_size, 0);
+ out_be32(&hw->wb_mem_addr, 0);
+ out_be32(&hw->hsyn_para, info.var.left_margin << 22 |
+ info.var.hsync_len << 11 |
+ info.var.right_margin);
+
+ out_be32(&hw->vsyn_para, info.var.upper_margin << 22 |
+ info.var.vsync_len << 11 |
+ info.var.lower_margin);
+
+ out_be32(&hw->syn_pol, 0);
+ out_be32(&hw->thresholds, 0x00037800);
+ out_be32(&hw->int_status, 0);
+ out_be32(&hw->int_mask, 0);
out_be32(&hw->plut, 0x01F5F666);
/* Pixel Clock configuration */
- debug("DIU pixclock in ps - %d\n", var->pixclock);
- diu_set_pixel_clock(var->pixclock);
-
- fb_initialized = 1;
-
- /* 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 fsl_fb_info.screen_base;
-}
-
-void fsl_diu_close(void)
-{
- struct fb_info *info = &fsl_fb_info;
- fsl_diu_disable_panel(info);
-}
+ diu_set_pixel_clock(info.var.pixclock);
-static int fsl_diu_enable_panel(struct fb_info *info)
-{
- struct diu *hw = dr.diu_reg;
- struct diu_ad *ad = &fsl_diu_fb_ad;
-
- debug("Entered: enable_panel\n");
- if (in_be32(&hw->desc[0]) != (unsigned)ad)
- out_be32(&hw->desc[0], (unsigned)ad);
- debug("desc[0] = 0x%x\n", hw->desc[0]);
- return 0;
-}
+ /* Set the frame buffers */
+ out_be32(&hw->desc[0], virt_to_phys(ad));
+ out_be32(&hw->desc[1], virt_to_phys(dummy_ad));
+ out_be32(&hw->desc[2], virt_to_phys(dummy_ad));
-static int fsl_diu_disable_panel(struct fb_info *info)
-{
- struct diu *hw = dr.diu_reg;
+ /* Enable the DIU, set display to all three planes */
+ out_be32(&hw->diu_mode, 1);
- debug("Entered: disable_panel\n");
- if (in_be32(&hw->desc[0]) != (unsigned)&dummy_ad)
- out_be32(&hw->desc[0], (unsigned)&dummy_ad);
return 0;
}
-static int map_video_memory(struct fb_info *info, unsigned long bytes_align)
-{
- unsigned long offset;
- unsigned long mask;
-
- debug("Entered: map_video_memory\n");
- /* allocate maximum 1280*1024 with 32bpp */
- info->smem_len = 1280 * 4 *1024 + bytes_align;
- debug("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 += (bytes_align - 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;
-
- debug("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;
-
- debug("Entered: enable_lcdc, fb_enabled = %d\n", fb_enabled);
- if (!fb_enabled) {
- out_be32(&hw->diu_mode, dr.mode);
- fb_enabled++;
- }
- debug("diu_mode = %d\n", hw->diu_mode);
-}
-
-static void disable_lcdc(void)
-{
- struct diu *hw = dr.diu_reg;
-
- debug("Entered: disable_lcdc, fb_enabled = %d\n", fb_enabled);
- if (fb_enabled) {
- out_be32(&hw->diu_mode, 0);
- fb_enabled = 0;
- }
-}
-
-/*
- * Align to 64-bit(8-byte), 32-byte, etc.
- */
-static int allocate_buf(struct diu_addr *buf, u32 size, u32 bytes_align)
+void *video_hw_init(void)
{
- u32 offset, ssize;
- u32 mask;
-
- debug("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;
-}
+ static GraphicDevice ctfb;
+ const char *options;
+ unsigned int depth = 0, freq = 0;
-#if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
-#include <stdio_dev.h>
-#include <video_fb.h>
-/*
- * The Graphic Device
- */
-static GraphicDevice ctfb;
+ if (!video_get_video_mode(&ctfb.winSizeX, &ctfb.winSizeY, &depth, &freq,
+ &options))
+ return NULL;
-void *video_hw_init(void)
-{
- struct fb_info *info;
+ /* Find the monitor port, which is a required option */
+ if (!options)
+ return NULL;
+ if (strncmp(options, "monitor=", 8) != 0)
+ return NULL;
- if (platform_diu_init(&ctfb.winSizeX, &ctfb.winSizeY) < 0)
+ if (platform_diu_init(ctfb.winSizeX, ctfb.winSizeY, options + 8) < 0)
return NULL;
/* fill in Graphic device struct */
sprintf(ctfb.modeIdent, "%ix%ix%i %ikHz %iHz",
- ctfb.winSizeX, ctfb.winSizeY, 32, 64, 60);
+ ctfb.winSizeX, ctfb.winSizeY, depth, 64, freq);
- ctfb.frameAdrs = (unsigned int)fsl_fb_open(&info);
+ ctfb.frameAdrs = (unsigned int)info.screen_base;
ctfb.plnSizeX = ctfb.winSizeX;
ctfb.plnSizeY = ctfb.winSizeY;
ctfb.isaBase = 0;
ctfb.pciBase = 0;
- ctfb.memSize = info->screen_size;
+ ctfb.memSize = info.screen_size;
/* Cursor Start Address */
ctfb.dprBase = 0;
return &ctfb;
}
-#endif /* defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE) */
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