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| author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2012-10-17 12:15:31 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2012-10-17 12:17:18 +0300 |
| commit | aa1e49a3752f09b3d2ab706f6d48916a04acf557 (patch) | |
| tree | 6b6f9d0429f4b2c19b3c38b0281eed9dd7083490 | |
| parent | 8c05a412243b522a263326c4839aec081151147c (diff) | |
| download | kernel-common-aa1e49a3752f09b3d2ab706f6d48916a04acf557.tar.gz kernel-common-aa1e49a3752f09b3d2ab706f6d48916a04acf557.tar.bz2 kernel-common-aa1e49a3752f09b3d2ab706f6d48916a04acf557.zip | |
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: Tomi Valkeinen <tomi.valkeinen@ti.com>
| -rw-r--r-- | drivers/video/omap2/vrfb.c | 16 | ||||
| -rw-r--r-- | include/video/omapvrfb.h | 2 |
2 files changed, 18 insertions, 0 deletions
diff --git a/drivers/video/omap2/vrfb.c b/drivers/video/omap2/vrfb.c index e4a0450a39a1..5d8fdac3b800 100644 --- a/drivers/video/omap2/vrfb.c +++ b/drivers/video/omap2/vrfb.c @@ -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 @@ out: } 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) diff --git a/include/video/omapvrfb.h b/include/video/omapvrfb.h index 3792bdea2f6d..bb0bd89f8bc6 100644 --- a/include/video/omapvrfb.h +++ b/include/video/omapvrfb.h @@ -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, |