[PATCH 6/9] AUO-K190x: make color handling more flexible
From: Heiko Stübner <heiko@sntech.de>
Date: 2013-03-22 14:15:55
Subsystem:
framebuffer layer, the rest · Maintainers:
Helge Deller, Linus Torvalds
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> --- drivers/video/auo_k190x.c | 79 +++++++++++++++++++++++++++++++++++++-------- 1 files changed, 65 insertions(+), 14 deletions(-)
diff --git a/drivers/video/auo_k190x.c b/drivers/video/auo_k190x.c
index 7f4c4ef..848cfe9 100644
--- a/drivers/video/auo_k190x.c
+++ b/drivers/video/auo_k190x.c@@ -59,8 +59,8 @@ 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;
@@ -90,6 +90,21 @@ 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, 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 */
@@ -409,6 +453,24 @@ 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,
@@ -893,18 +955,8 @@ int __devinit 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];
@@ -932,8 +984,7 @@ int __devinit 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 */
--
1.7.2.3