redonkable/alistair23-linux
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AUO-K190x: make color handling more flexible

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Don't hardcode the 8bit mode in all parts. This creates the possibility
to add another colormode easily later on.

Signed-off-by: Heiko Stübner <heiko@sntech.de>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Heiko Stübner 2013-03-22 15:15:55 +01:00 committed by Tomi Valkeinen
parent 4ea80d35b4
commit 76de404b45
1 changed files with 65 additions and 14 deletions
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79
drivers/video/auo_k190x.c
View file

@ -60,8 +60,8 @@ static void auok190x_issue_cmd(struct auok190xfb_par *par, u16 data)
par->board->set_ctl(par, AUOK190X_I80_DC, 1);
}
static int auok190x_issue_pixels(struct auok190xfb_par *par, int size,
u16 *data)
static int auok190x_issue_pixels_gray8(struct auok190xfb_par *par, int size,
u16 *data)
{
struct device *dev = par->info->device;
int i;
@ -91,6 +91,21 @@ static int auok190x_issue_pixels(struct auok190xfb_par *par, int size,
return 0;
}
static int auok190x_issue_pixels(struct auok190xfb_par *par, int size,
u16 *data)
{
struct fb_info *info = par->info;
struct device *dev = par->info->device;
if (info->var.bits_per_pixel == 8 && info->var.grayscale)
auok190x_issue_pixels_gray8(par, size, data);
else
dev_err(dev, "unsupported color mode (bits: %d, gray: %d)\n",
info->var.bits_per_pixel, info->var.grayscale);
return 0;
}
static u16 auok190x_read_data(struct auok190xfb_par *par)
{
u16 data;
@ -381,6 +396,35 @@ static int auok190xfb_check_var(struct fb_var_screeninfo *var,
struct panel_info *panel = &panel_table[par->resolution];
int size;
/*
* Color depth
*/
if (var->bits_per_pixel == 8 && var->grayscale == 1) {
/*
* For 8-bit grayscale, R, G, and B offset are equal.
*/
var->red.length = 8;
var->red.offset = 0;
var->red.msb_right = 0;
var->green.length = 8;
var->green.offset = 0;
var->green.msb_right = 0;
var->blue.length = 8;
var->blue.offset = 0;
var->blue.msb_right = 0;
var->transp.length = 0;
var->transp.offset = 0;
var->transp.msb_right = 0;
} else {
dev_warn(dev, "unsupported color mode (bits: %d, grayscale: %d)\n",
info->var.bits_per_pixel, info->var.grayscale);
return -EINVAL;
}
/*
* Dimensions
*/
@ -410,6 +454,24 @@ static int auok190xfb_check_var(struct fb_var_screeninfo *var,
return 0;
}
static int auok190xfb_set_fix(struct fb_info *info)
{
struct fb_fix_screeninfo *fix = &info->fix;
struct fb_var_screeninfo *var = &info->var;
fix->line_length = var->xres_virtual * var->bits_per_pixel / 8;
fix->type = FB_TYPE_PACKED_PIXELS;
fix->accel = FB_ACCEL_NONE;
fix->visual = (var->grayscale) ? FB_VISUAL_STATIC_PSEUDOCOLOR
: FB_VISUAL_TRUECOLOR;
fix->xpanstep = 0;
fix->ypanstep = 0;
fix->ywrapstep = 0;
return 0;
}
static struct fb_ops auok190xfb_ops = {
.owner = THIS_MODULE,
.fb_read = fb_sys_read,
@ -894,18 +956,8 @@ int auok190x_common_probe(struct platform_device *pdev,
/* initialise fix, var, resolution and rotation */
strlcpy(info->fix.id, init->id, 16);
info->fix.type = FB_TYPE_PACKED_PIXELS;
info->fix.visual = FB_VISUAL_STATIC_PSEUDOCOLOR;
info->fix.xpanstep = 0;
info->fix.ypanstep = 0;
info->fix.ywrapstep = 0;
info->fix.accel = FB_ACCEL_NONE;
info->var.bits_per_pixel = 8;
info->var.grayscale = 1;
info->var.red.length = 8;
info->var.green.length = 8;
info->var.blue.length = 8;
panel = &panel_table[board->resolution];
@ -933,8 +985,7 @@ int auok190x_common_probe(struct platform_device *pdev,
if (ret)
goto err_defio;
info->fix.line_length = info->var.xres_virtual *
info->var.bits_per_pixel / 8;
auok190xfb_set_fix(info);
/* deferred io init */