fbdev: mxsfb: implement FB_PRE_INIT_FB option (767f17a7) · Commits · 戴 / test

drivers/video/fbdev/Kconfig

+1 −1

Original line number	Diff line number	Diff line
		@@ -2183,7 +2183,7 @@ config FB_EP93XX

		config FB_PRE_INIT_FB
		bool "Don't reinitialize, use bootloader's GDC/Display configuration"
		depends on FB && FB_MB862XX_LIME
		depends on FB && (FB_MB862XX_LIME \|\| FB_MXS)
		---help---
		Select this option if display contents should be inherited as set by
		the bootloader.

+12 −0

Original line number	Diff line number	Diff line
		@@ -181,6 +181,7 @@ struct mxsfb_info {
		const struct mxsfb_devdata *devdata;
		u32 sync;
		struct regulator *reg_lcd;
		int pre_init;
		};

		#define mxsfb_is_v3(host) (host->devdata->ipversion == 3)
		@@ -419,6 +420,12 @@ static int mxsfb_set_par(struct fb_info *fb_info)

		fb_info->fix.line_length = line_size;

		if (host->pre_init) {
		mxsfb_enable_controller(fb_info);
		host->pre_init = 0;
		return 0;
		}

		/*
		* It seems, you can't re-program the controller if it is still running.
		* This may lead into shifted pictures (FIFO issue?).
		@@ -931,6 +938,10 @@ static int mxsfb_probe(struct platform_device *pdev)
		if (IS_ERR(host->reg_lcd))
		host->reg_lcd = NULL;

		#if defined(CONFIG_FB_PRE_INIT_FB)
		host->pre_init = 1;
		#endif

		fb_info->pseudo_palette = devm_kcalloc(&pdev->dev, 16, sizeof(u32),
		GFP_KERNEL);
		if (!fb_info->pseudo_palette) {
		@@ -963,6 +974,7 @@ static int mxsfb_probe(struct platform_device *pdev)
		mxsfb_enable_controller(fb_info);
		}

		host->pre_init = 0;
		dev_info(&pdev->dev, "initialized\n");

		return 0;