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Commit a2ecd1a8 authored by Ian Campbell's avatar Ian Campbell Committed by Russell King
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[ARM PATCH] 1926/3: PXAFB cleanups and fixes 

Patch from Ian Campbell

Sorry, 1926/2 was missing a brace. Fixed here.

Previous commentry:
I have corrected the grayscale conversion to correctly use the upper
byte rather than the lower one. As requested I have also left the
actual grayscale conversion where it was this time and just dealt with
the palette differences in pxafb_setpalettereg.

fb_alloc_cmap is only called when bits_per_pixel is < 16, otherwise
any existing cmap is freed.

I also fixed up all the spaces and brackets issues (not just the one
you raised previously) this introduces some noise in the patch, if
you'd like the two patches separately please ask.
parent 0471b5fb
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Showing with 50 additions and 43 deletions
drivers/video/pxafb.c
View file @ a2ecd1a8
......@@ -109,10 +109,13 @@ pxafb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue,
u_int val, ret = 1;
if (regno < fbi->palette_size) {
val = ((red >> 0) & 0xf800);
val |= ((green >> 5) & 0x07e0);
val |= ((blue >> 11) & 0x001f);
if (fbi->fb.var.grayscale) {
val = ((blue >> 8) & 0x00ff);
} else {
val = ((red >> 0) & 0xf800);
val |= ((green >> 5) & 0x07e0);
val |= ((blue >> 11) & 0x001f);
}
fbi->palette_cpu[regno] = val;
ret = 0;
}
......@@ -150,7 +153,7 @@ pxafb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
switch (fbi->fb.fix.visual) {
case FB_VISUAL_TRUECOLOR:
/*
* 12 or 16-bit True Colour. We encode the RGB value
* 16-bit True Colour. We encode the RGB value
* according to the RGB bitfield information.
*/
if (regno < 16) {
......@@ -242,7 +245,7 @@ static int pxafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
* The pixel packing format is described on page 7-11 of the
* PXA2XX Developer's Manual.
*/
if ( var->bits_per_pixel == 16 ) {
if (var->bits_per_pixel == 16) {
var->red.offset = 11; var->red.length = 5;
var->green.offset = 5; var->green.length = 6;
var->blue.offset = 0; var->blue.length = 5;
......@@ -297,7 +300,10 @@ static int pxafb_set_par(struct fb_info *info)
fbi->fb.fix.line_length = var->xres_virtual *
var->bits_per_pixel / 8;
fbi->palette_size = var->bits_per_pixel == 8 ? 256 : 16;
if (var->bits_per_pixel == 16)
fbi->palette_size = 0;
else
fbi->palette_size = var->bits_per_pixel == 1 ? 4 : 1 << var->bits_per_pixel;
palette_mem_size = fbi->palette_size * sizeof(u16);
......@@ -311,6 +317,11 @@ static int pxafb_set_par(struct fb_info *info)
*/
pxafb_set_truecolor(fbi->fb.fix.visual == FB_VISUAL_TRUECOLOR);
if (fbi->fb.var.bits_per_pixel == 16)
fb_dealloc_cmap(&fbi->fb.cmap);
else
fb_alloc_cmap(&fbi->fb.cmap, 1<<fbi->fb.var.bits_per_pixel, 0);
pxafb_activate_var(var, fbi);
return 0;
......@@ -349,7 +360,7 @@ static int pxafb_set_par(struct fb_info *info)
/*
* pxafb_blank():
* Blank the display by setting all palette values to zero. Note, the
* 12 and 16 bpp modes don't really use the palette, so this will not
* 16 bpp mode does not really use the palette, so this will not
* blank the display in all modes.
*/
static int pxafb_blank(int blank, struct fb_info *info)
......@@ -514,7 +525,7 @@ static int pxafb_activate_var(struct fb_var_screeninfo *var, struct pxafb_info *
* the YRES parameter.
*/
lines_per_panel = var->yres;
if (fbi->lccr0 & LCCR0_SDS)
if ((fbi->lccr0 & LCCR0_SDS) == LCCR0_Dual)
lines_per_panel /= 2;
new_regs.lccr2 =
......@@ -566,20 +577,16 @@ static int pxafb_activate_var(struct fb_var_screeninfo *var, struct pxafb_info *
fbi->dmadesc_palette_cpu->fidr = 0;
fbi->dmadesc_palette_cpu->ldcmd = (fbi->palette_size * 2) | LDCMD_PAL;
if( var->bits_per_pixel < 12)
{
/* assume any mode with <12 bpp is palette driven */
fbi->dmadesc_palette_cpu->fdadr = fbi->dmadesc_fbhigh_dma;
fbi->dmadesc_fbhigh_cpu->fdadr = fbi->dmadesc_palette_dma;
fbi->fdadr0 = fbi->dmadesc_palette_dma; /* flips back and forth between pal and fbhigh */
}
else
{
if (var->bits_per_pixel == 16) {
/* palette shouldn't be loaded in true-color mode */
fbi->dmadesc_fbhigh_cpu->fdadr = fbi->dmadesc_fbhigh_dma;
fbi->fdadr0 = fbi->dmadesc_fbhigh_dma; /* no pal just fbhigh */
/* init it to something, even though we won't be using it */
fbi->dmadesc_palette_cpu->fdadr = fbi->dmadesc_palette_dma;
} else {
fbi->dmadesc_palette_cpu->fdadr = fbi->dmadesc_fbhigh_dma;
fbi->dmadesc_fbhigh_cpu->fdadr = fbi->dmadesc_palette_dma;
fbi->fdadr0 = fbi->dmadesc_palette_dma; /* flips back and forth between pal and fbhigh */
}
#if 0
......@@ -696,7 +703,7 @@ static void pxafb_setup_gpio(struct pxafb_info *fbi)
}
else {
printk( KERN_ERR "pxafb_setup_gpio: unable to determine bits per pixel\n");
printk(KERN_ERR "pxafb_setup_gpio: unable to determine bits per pixel\n");
}
}
......@@ -1123,11 +1130,11 @@ static int __init pxafb_parse_options(struct device *dev, char *options)
res_specified = 1;
}
done:
if ( res_specified ) {
dev_info(dev, "overriding resolution: %dx%x\n", xres, yres);
if (res_specified) {
dev_info(dev, "overriding resolution: %dx%d\n", xres, yres);
inf->xres = xres; inf->yres = yres;
}
if ( bpp_specified )
if (bpp_specified)
switch (bpp) {
case 1:
case 2:
......@@ -1142,7 +1149,7 @@ static int __init pxafb_parse_options(struct device *dev, char *options)
}
} else if (!strncmp(this_opt, "pixclock:", 9)) {
inf->pixclock = simple_strtoul(this_opt+9, NULL, 0);
dev_info(dev, "override pixclock: %u\n", inf->pixclock);
dev_info(dev, "override pixclock: %ld\n", inf->pixclock);
} else if (!strncmp(this_opt, "left:", 5)) {
inf->left_margin = simple_strtoul(this_opt+5, NULL, 0);
dev_info(dev, "override left: %u\n", inf->left_margin);
......@@ -1162,7 +1169,7 @@ static int __init pxafb_parse_options(struct device *dev, char *options)
inf->vsync_len = simple_strtoul(this_opt+9, NULL, 0);
dev_info(dev, "override vsynclen: %u\n", inf->vsync_len);
} else if (!strncmp(this_opt, "hsync:", 6)) {
if ( simple_strtoul(this_opt+6, NULL, 0) == 0 ) {
if (simple_strtoul(this_opt+6, NULL, 0) == 0) {
dev_info(dev, "override hsync: Active Low\n");
inf->sync &= ~FB_SYNC_HOR_HIGH_ACT;
} else {
......@@ -1170,7 +1177,7 @@ static int __init pxafb_parse_options(struct device *dev, char *options)
inf->sync |= FB_SYNC_HOR_HIGH_ACT;
}
} else if (!strncmp(this_opt, "vsync:", 6)) {
if ( simple_strtoul(this_opt+6, NULL, 0) == 0 ) {
if (simple_strtoul(this_opt+6, NULL, 0) == 0) {
dev_info(dev, "override vsync: Active Low\n");
inf->sync &= ~FB_SYNC_VERT_HIGH_ACT;
} else {
......@@ -1178,7 +1185,7 @@ static int __init pxafb_parse_options(struct device *dev, char *options)
inf->sync |= FB_SYNC_VERT_HIGH_ACT;
}
} else if (!strncmp(this_opt, "dpc:", 4)) {
if ( simple_strtoul(this_opt+4, NULL, 0) == 0 ) {
if (simple_strtoul(this_opt+4, NULL, 0) == 0) {
dev_info(dev, "override double pixel clock: false\n");
inf->lccr3 &= ~LCCR3_DPC;
} else {
......@@ -1186,20 +1193,20 @@ static int __init pxafb_parse_options(struct device *dev, char *options)
inf->lccr3 |= LCCR3_DPC;
}
} else if (!strncmp(this_opt, "outputen:", 9)) {
if ( simple_strtoul(this_opt+9, NULL, 0) == 0 ) {
if (simple_strtoul(this_opt+9, NULL, 0) == 0) {
dev_info(dev, "override output enable: active low\n");
inf->lccr3 = ( inf->lccr3 & ~LCCR3_OEP ) | LCCR3_OutEnL;
inf->lccr3 = (inf->lccr3 & ~LCCR3_OEP) | LCCR3_OutEnL;
} else {
dev_info(dev, "override output enable: active high\n");
inf->lccr3 = ( inf->lccr3 & ~LCCR3_OEP ) | LCCR3_OutEnH;
inf->lccr3 = (inf->lccr3 & ~LCCR3_OEP) | LCCR3_OutEnH;
}
} else if (!strncmp(this_opt, "pixclockpol:", 12)) {
if ( simple_strtoul(this_opt+12, NULL, 0) == 0 ) {
if (simple_strtoul(this_opt+12, NULL, 0) == 0) {
dev_info(dev, "override pixel clock polarity: falling edge\n");
inf->lccr3 = ( inf->lccr3 & ~LCCR3_PCP ) | LCCR3_PixFlEdg;
inf->lccr3 = (inf->lccr3 & ~LCCR3_PCP) | LCCR3_PixFlEdg;
} else {
dev_info(dev, "override pixel clock polarity: rising edge\n");
inf->lccr3 = ( inf->lccr3 & ~LCCR3_PCP ) | LCCR3_PixRsEdg;
inf->lccr3 = (inf->lccr3 & ~LCCR3_PCP) | LCCR3_PixRsEdg;
}
} else if (!strncmp(this_opt, "color", 5)) {
inf->lccr0 = (inf->lccr0 & ~LCCR0_CMS) | LCCR0_Color;
......@@ -1244,7 +1251,7 @@ int __init pxafb_probe(struct device *dev)
#ifdef CONFIG_FB_PXA_PARAMETERS
ret = pxafb_parse_options(dev, g_options);
if ( ret < 0 )
if (ret < 0)
goto failed;
#endif
......@@ -1252,23 +1259,23 @@ int __init pxafb_probe(struct device *dev)
/* Check for various illegal bit-combinations. Currently only
* a warning is given. */
if ( inf->lccr0 & LCCR0_INVALID_CONFIG_MASK )
if (inf->lccr0 & LCCR0_INVALID_CONFIG_MASK)
dev_warn(dev, "machine LCCR0 setting contains illegal bits: %08x\n",
inf->lccr0 & LCCR0_INVALID_CONFIG_MASK);
if ( inf->lccr3 & LCCR3_INVALID_CONFIG_MASK )
if (inf->lccr3 & LCCR3_INVALID_CONFIG_MASK)
dev_warn(dev, "machine LCCR3 setting contains illegal bits: %08x\n",
inf->lccr3 & LCCR3_INVALID_CONFIG_MASK);
if ( inf->lccr0 & LCCR0_DPD &&
( ( inf->lccr0 & LCCR0_PAS ) != LCCR0_Pas ||
( inf->lccr0 & LCCR0_SDS ) != LCCR0_Sngl ||
( inf->lccr0 & LCCR0_CMS ) != LCCR0_Mono ) )
if (inf->lccr0 & LCCR0_DPD &&
((inf->lccr0 & LCCR0_PAS) != LCCR0_Pas ||
(inf->lccr0 & LCCR0_SDS) != LCCR0_Sngl ||
(inf->lccr0 & LCCR0_CMS) != LCCR0_Mono))
dev_warn(dev, "Double Pixel Data (DPD) mode is only valid in passive mono"
" single panel mode\n");
if ( (inf->lccr0 & LCCR0_PAS) == LCCR0_Act &&
( inf->lccr0 & LCCR0_SDS ) == LCCR0_Dual )
if ((inf->lccr0 & LCCR0_PAS) == LCCR0_Act &&
(inf->lccr0 & LCCR0_SDS) == LCCR0_Dual)
dev_warn(dev, "Dual panel only valid in passive mode\n");
if ( (inf->lccr0 & LCCR0_PAS ) == LCCR0_Pas &&
(inf->upper_margin || inf->lower_margin) )
if ((inf->lccr0 & LCCR0_PAS) == LCCR0_Pas &&
(inf->upper_margin || inf->lower_margin))
dev_warn(dev, "Upper and lower margins must be 0 in passive mode\n");
#endif
......
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