Commit eb30199b authored Dec 31, 2014 by Tomi Valkeinen

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>

parent 64e22ffd

drivers/video/fbdev/omap2/dss/dss.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -453,5 +453,6 @@ int dss_pll_write_config_type_a(struct dss_pll *pll,
		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

drivers/video/fbdev/omap2/dss/pll.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -222,6 +222,16 @@ static int wait_for_bit_change(void __iomem *reg, int bitnum, int value)
		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;