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.valkei...@ti.com>
---
drivers/video/omap2/vrfb.c | 16 ++++++++++++++++
include/video/omapvrfb.h | 2 ++
2 files changed, 18 insertions(+)
diff --git a/drivers/video/omap2/vrfb.c b/drivers/video/omap2/vrfb.c
index e4a0450..5d8fdac 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 3792bde..bb0bd89 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,
--
1.7.9.5
--
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