[U-Boot] [PATCH V2 1/4] VIDEO: MX5: Switch MX5 to CONFIG_VIDEO

[Stefano Babic]

The framebuffer driver for MX5 is based on CONFIG_LCD.
In the current implementation, there is a serious bug
because the required memory is allocated before
relocation, but the driver knows only later which is
the resolution of the display. The patch switches the driver
to CONFIG_VIDEO and the memory is allocated by the driver itself.

Signed-off-by: Stefano Babic <sbabic at denx.de>
CC: Anatolij Gustschin <agust at denx.de>
---

V2: patchset with modified Marek's patch to select display

 drivers/video/mxc_ipuv3_fb.c |  110 ++++++++++++++----------------------------
 1 files changed, 36 insertions(+), 74 deletions(-)

diff --git a/drivers/video/mxc_ipuv3_fb.c b/drivers/video/mxc_ipuv3_fb.c
index a66981c..7f1d46e 100644
--- a/drivers/video/mxc_ipuv3_fb.c
+++ b/drivers/video/mxc_ipuv3_fb.c
@@ -27,7 +27,6 @@
  * MA 02111-1307 USA
  */
 
-/* #define DEBUG */
 #include <common.h>
 #include <asm/errno.h>
 #include <linux/string.h>
@@ -35,43 +34,17 @@
 #include <linux/fb.h>
 #include <asm/io.h>
 #include <malloc.h>
-#include <lcd.h>
+#include <video_fb.h>
 #include "videomodes.h"
 #include "ipu.h"
 #include "mxcfb.h"
 
-DECLARE_GLOBAL_DATA_PTR;
-
-void *lcd_base;			/* Start of framebuffer memory	*/
-void *lcd_console_address;	/* Start of console buffer	*/
-
-int lcd_line_length;
-int lcd_color_fg;
-int lcd_color_bg;
-
-short console_col;
-short console_row;
-
-vidinfo_t panel_info;
-
 static int mxcfb_map_video_memory(struct fb_info *fbi);
 static int mxcfb_unmap_video_memory(struct fb_info *fbi);
 
-void lcd_initcolregs(void)
-{
-}
-
-void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue)
-{
-}
-
-void lcd_disable(void)
-{
-}
-
-void lcd_panel_disable(void)
-{
-}
+/* graphics setup */
+static GraphicDevice panel;
+struct fb_videomode *gmode;
 
 void fb_videomode_to_var(struct fb_var_screeninfo *var,
 			 const struct fb_videomode *mode)
@@ -440,8 +413,8 @@ static int mxcfb_map_video_memory(struct fb_info *fbi)
 				    fbi->fix.line_length;
 	}
 
-	fbi->screen_base = (char *)lcd_base;
-	fbi->fix.smem_start = (unsigned long)lcd_base;
+	fbi->screen_base = (char *)malloc(fbi->fix.smem_len);
+	fbi->fix.smem_start = (unsigned long)fbi->screen_base;
 	if (fbi->screen_base == 0) {
 		puts("Unable to allocate framebuffer memory\n");
 		fbi->fix.smem_len = 0;
@@ -561,12 +534,12 @@ static int mxcfb_probe(u32 interface_pix_fmt, struct fb_videomode *mode)
 	mxcfb_info[mxcfbi->ipu_di] = fbi;
 
 	/* Need dummy values until real panel is configured */
-	fbi->var.xres = 640;
-	fbi->var.yres = 480;
-	fbi->var.bits_per_pixel = 16;
 
 	mxcfbi->ipu_di_pix_fmt = interface_pix_fmt;
 	fb_videomode_to_var(&fbi->var, mode);
+	fbi->var.bits_per_pixel = 16;
+	fbi->fix.line_length = fbi->var.xres * (fbi->var.bits_per_pixel / 8);
+	fbi->fix.smem_len = fbi->var.yres_virtual * fbi->fix.line_length;
 
 	mxcfb_check_var(&fbi->var, fbi);
 
@@ -581,19 +554,16 @@ static int mxcfb_probe(u32 interface_pix_fmt, struct fb_videomode *mode)
 
 	mxcfb_set_par(fbi);
 
-	/* Setting panel_info for lcd */
-	panel_info.cmap = NULL;
-	panel_info.vl_col = fbi->var.xres;
-	panel_info.vl_row = fbi->var.yres;
-	panel_info.vl_bpix = LCD_BPP;
+	panel.winSizeX = mode->xres;
+	panel.winSizeY = mode->yres;
+	panel.plnSizeX = mode->xres;
+	panel.plnSizeY = mode->yres;
 
-	lcd_line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
+	panel.frameAdrs = (u32)fbi->screen_base;
+	panel.memSize = fbi->screen_size;
 
-	debug("MXC IPUV3 configured\n"
-		"XRES = %d YRES = %d BitsXpixel = %d\n",
-		panel_info.vl_col,
-		panel_info.vl_row,
-		panel_info.vl_bpix);
+	panel.gdfBytesPP = 2;
+	panel.gdfIndex = GDF_16BIT_565RGB;
 
 	ipu_dump_registers();
 
@@ -603,29 +573,7 @@ err0:
 	return ret;
 }
 
-int overwrite_console(void)
-{
-	/* Keep stdout / stderr on serial, our LCD is for splashscreen only */
-	return 1;
-}
-
-void lcd_ctrl_init(void *lcdbase)
-{
-	u32 mem_len = panel_info.vl_col *
-		panel_info.vl_row *
-		NBITS(panel_info.vl_bpix) / 8;
-
-	/*
-	 * We rely on lcdbase being a physical address, i.e., either MMU off,
-	 * or 1-to-1 mapping. Might want to add some virt2phys here.
-	 */
-	if (!lcdbase)
-		return;
-
-	memset(lcdbase, 0, mem_len);
-}
-
-int mx51_fb_init(struct fb_videomode *mode)
+void *video_hw_init(void)
 {
 	int ret;
 
@@ -633,10 +581,24 @@ int mx51_fb_init(struct fb_videomode *mode)
 	if (ret)
 		puts("Error initializing IPU\n");
 
-	lcd_base += 56;
+	ret = mxcfb_probe(IPU_PIX_FMT_RGB666, gmode);
+	debug("Framebuffer at 0x%x\n", (unsigned int)panel.frameAdrs);
 
-	debug("Framebuffer at 0x%x\n", (unsigned int)lcd_base);
-	ret = mxcfb_probe(IPU_PIX_FMT_RGB666, mode);
+	return (void *)&panel;
+}
 
-	return ret;
+void video_set_lut(unsigned int index, /* color number */
+			unsigned char r,    /* red */
+			unsigned char g,    /* green */
+			unsigned char b     /* blue */
+			)
+{
+       return;
+}
+
+int mx51_fb_init(struct fb_videomode *mode)
+{
+	gmode = mode;
+
+	return 0;
 }
-- 
1.7.1