imxfb: add 18 bit support (1512222b) · Commits · 戴 / test

drivers/video/imxfb.c

+15 −4

Original line number	Diff line number	Diff line
		@@ -14,7 +14,6 @@
		* linux-arm-kernel@lists.arm.linux.org.uk
		*/


		#include <linux/module.h>
		#include <linux/kernel.h>
		#include <linux/errno.h>
		@@ -159,6 +158,17 @@ struct imxfb_info {
		#define MIN_XRES 64
		#define MIN_YRES 64

		/* Actually this really is 18bit support, the lowest 2 bits of each colour
		* are unused in hardware. We claim to have 24bit support to make software
		* like X work, which does not support 18bit.
		*/
		static struct imxfb_rgb def_rgb_18 = {
		.red = {.offset = 16, .length = 8,},
		.green = {.offset = 8, .length = 8,},
		.blue = {.offset = 0, .length = 8,},
		.transp = {.offset = 0, .length = 0,},
		};

		static struct imxfb_rgb def_rgb_16_tft = {
		.red = {.offset = 11, .length = 5,},
		.green = {.offset = 5, .length = 6,},
		@@ -286,6 +296,9 @@ static int imxfb_check_var(struct fb_var_screeninfo var, struct fb_info info)

		pr_debug("var->bits_per_pixel=%d\n", var->bits_per_pixel);
		switch (var->bits_per_pixel) {
		case 32:
		rgb = &def_rgb_18;
		break;
		case 16:
		default:
		if (readl(fbi->regs + LCDC_PCR) & PCR_TFT)
		@@ -327,9 +340,7 @@ static int imxfb_set_par(struct fb_info *info)
		struct imxfb_info *fbi = info->par;
		struct fb_var_screeninfo *var = &info->var;

		pr_debug("set_par\n");

		if (var->bits_per_pixel == 16)
		if (var->bits_per_pixel == 16 \|\| var->bits_per_pixel == 32)
		info->fix.visual = FB_VISUAL_TRUECOLOR;
		else if (!fbi->cmap_static)
		info->fix.visual = FB_VISUAL_PSEUDOCOLOR;