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Commit aa1e49a3 authored by Tomi Valkeinen's avatar Tomi Valkeinen
Browse files

OMAPDSS: VRFB: add omap_vrfb_supported() 



Add an exported function omap_vrfb_supported() which returns true if the
vrfb driver has been loaded succesfully. This can be used to decide if
VRFB can be used or not.

Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
parent 8c05a412

drivers/video/omap2/vrfb.c

+16 −0
Original line number Diff line number Diff line
@@ -77,6 +77,8 @@ static void __iomem *vrfb_base; 
static int num_ctxs;

static struct vrfb_ctx *ctxs;



static bool vrfb_loaded;



static void omap2_sms_write_rot_control(u32 val, unsigned ctx)

{

	__raw_writel(val, vrfb_base + SMS_ROT_CONTROL(ctx));
@@ -336,6 +338,12 @@ int omap_vrfb_request_ctx(struct vrfb *vrfb) 
}

EXPORT_SYMBOL(omap_vrfb_request_ctx);



bool omap_vrfb_supported(void)

{

	return vrfb_loaded;

}

EXPORT_SYMBOL(omap_vrfb_supported);



static int __init vrfb_probe(struct platform_device *pdev)

{

	struct resource *mem;
@@ -375,11 +383,19 @@ static int __init vrfb_probe(struct platform_device *pdev) 
		ctxs[i].base = mem->start;

	}



	vrfb_loaded = true;



	return 0;

}



static void __exit vrfb_remove(struct platform_device *pdev)

{

	vrfb_loaded = false;

}



static struct platform_driver vrfb_driver = {

	.driver.name	= "omapvrfb",

	.remove		= __exit_p(vrfb_remove),

};



static int __init vrfb_init(void)

include/video/omapvrfb.h

+2 −0
Original line number Diff line number Diff line
@@ -36,6 +36,7 @@ struct vrfb { 
};



#ifdef CONFIG_OMAP2_VRFB

extern bool omap_vrfb_supported(void);

extern int omap_vrfb_request_ctx(struct vrfb *vrfb);

extern void omap_vrfb_release_ctx(struct vrfb *vrfb);

extern void omap_vrfb_adjust_size(u16 *width, u16 *height,
@@ -49,6 +50,7 @@ extern int omap_vrfb_map_angle(struct vrfb *vrfb, u16 height, u8 rot); 
extern void omap_vrfb_restore_context(void);



#else

static inline bool omap_vrfb_supported(void) { return false; }

static inline int omap_vrfb_request_ctx(struct vrfb *vrfb) { return 0; }

static inline void omap_vrfb_release_ctx(struct vrfb *vrfb) {}

static inline void omap_vrfb_adjust_size(u16 *width, u16 *height,