OMAPDSS: PLL: add dss_pll_wait_reset_done()
Add a helper function to wait until the PLL's reset is done.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/fbdev/omap2/dss/dss.h b/drivers/video/fbdev/omap2/dss/dss.h
index 1826ee9..d6c9c3d 100644
--- a/drivers/video/fbdev/omap2/dss/dss.h
+++ b/drivers/video/fbdev/omap2/dss/dss.h
@@ -453,5 +453,6 @@
const struct dss_pll_clock_info *cinfo);
int dss_pll_write_config_type_b(struct dss_pll *pll,
const struct dss_pll_clock_info *cinfo);
+int dss_pll_wait_reset_done(struct dss_pll *pll);
#endif
diff --git a/drivers/video/fbdev/omap2/dss/pll.c b/drivers/video/fbdev/omap2/dss/pll.c
index 335ffac..f974ddc 100644
--- a/drivers/video/fbdev/omap2/dss/pll.c
+++ b/drivers/video/fbdev/omap2/dss/pll.c
@@ -222,6 +222,16 @@
return !value;
}
+int dss_pll_wait_reset_done(struct dss_pll *pll)
+{
+ void __iomem *base = pll->base;
+
+ if (wait_for_bit_change(base + PLL_STATUS, 0, 1) != 1)
+ return -ETIMEDOUT;
+ else
+ return 0;
+}
+
static int dss_wait_hsdiv_ack(struct dss_pll *pll, u32 hsdiv_ack_mask)
{
int t = 100;