From: Jerry Huang Chang-Ming.Huang@freescale.com
Using PPC I/O accessor to DIU I/O space instead of directly read/write. It will prevent the dozen of compiler order issue and PPC hardware order issue for accessing I/O space.
Using the toolchain(tc-fsl-x86lnx-e500-dp-4.3.74-2.i386.rpm) can show up the order issue of DIU driver.
Signed-off-by: Dave Liu daveliu@freescale.com Signed-off-by: Jerry Huang Chang-Ming.Huang@freescale.com --- * address Timur's comments
board/freescale/common/fsl_diu_fb.c | 55 ++++++++++++++++++----------------- 1 files changed, 28 insertions(+), 27 deletions(-)
diff --git a/board/freescale/common/fsl_diu_fb.c b/board/freescale/common/fsl_diu_fb.c index 2fc878b..d6c10d9 100644 --- a/board/freescale/common/fsl_diu_fb.c +++ b/board/freescale/common/fsl_diu_fb.c @@ -1,5 +1,5 @@ /* - * Copyright 2007 Freescale Semiconductor, Inc. + * Copyright 2007, 2010 Freescale Semiconductor, Inc. * York Sun yorksun@freescale.com * * FSL DIU Framebuffer driver @@ -26,6 +26,7 @@ #include <common.h> #include <i2c.h> #include <malloc.h> +#include <asm/io.h>
#include "fsl_diu_fb.h"
@@ -246,9 +247,9 @@ int fsl_diu_init(int xres,
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; + out_be32(&dr.diu_reg->desc[0], &dummy_ad); + out_be32(&dr.diu_reg->desc[1], &dummy_ad); + out_be32(&dr.diu_reg->desc[2], &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]);
@@ -310,26 +311,26 @@ int fsl_diu_init(int xres,
/* 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 */ + 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 */ - hw->vsyn_para = var->upper_margin << 22 | /* BP_V */ - var->vsync_len << 11 | /* PW_V */ - var->lower_margin; /* FP_V */ + var->right_margin); /* FP_H */
- 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; + 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->plut, 0x01F5F666); /* Pixel Clock configuration */ debug("DIU pixclock in ps - %d\n", var->pixclock); diu_set_pixel_clock(var->pixclock); @@ -369,8 +370,8 @@ static int fsl_diu_enable_panel(struct fb_info *info) struct diu_ad *ad = &fsl_diu_fb_ad;
debug("Entered: enable_panel\n"); - if (hw->desc[0] != (unsigned int)ad) - hw->desc[0] = (unsigned int)ad; + if (in_be32(&hw->desc[0]) != (u32)ad) + out_be32(&hw->desc[0], ad); debug("desc[0] = 0x%x\n", hw->desc[0]); return 0; } @@ -380,8 +381,8 @@ static int fsl_diu_disable_panel(struct fb_info *info) struct diu *hw = dr.diu_reg;
debug("Entered: disable_panel\n"); - if (hw->desc[0] != (unsigned int)&dummy_ad) - hw->desc[0] = (unsigned int)&dummy_ad; + if (in_be32(&hw->desc[0]) != (u32)&dummy_ad) + out_be32(&hw->desc[0], &dummy_ad); return 0; }
@@ -422,7 +423,7 @@ static void enable_lcdc(void)
debug("Entered: enable_lcdc, fb_enabled = %d\n", fb_enabled); if (!fb_enabled) { - hw->diu_mode = dr.mode; + out_be32(&hw->diu_mode, dr.mode); fb_enabled++; } debug("diu_mode = %d\n", hw->diu_mode); @@ -434,7 +435,7 @@ static void disable_lcdc(void)
debug("Entered: disable_lcdc, fb_enabled = %d\n", fb_enabled); if (fb_enabled) { - hw->diu_mode = 0; + out_be32(&hw->diu_mode, 0); fb_enabled = 0; } }