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author | 2013-03-22 15:15:55 +0100 | |
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committer | 2013-04-04 13:08:07 +0300 | |
commit | 76de404b452305409182748568444994df765d9d (patch) | |
tree | 841692bcf7c145e71bcc9c52110559e27ca001be /drivers/video/auo_k190x.c | |
parent | AUO-K190x: move var resolution-handling into check_var (diff) | |
download | linux-76de404b452305409182748568444994df765d9d.tar.gz linux-76de404b452305409182748568444994df765d9d.tar.bz2 linux-76de404b452305409182748568444994df765d9d.zip |
AUO-K190x: make color handling more flexible
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>
Diffstat (limited to 'drivers/video/auo_k190x.c')
-rw-r--r-- | 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 a77513b0e18c..f7f00e34323e 100644 --- a/drivers/video/auo_k190x.c +++ b/drivers/video/auo_k190x.c @@ -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; @@ -382,6 +397,35 @@ 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 */ @@ -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 */ |