clk: st: Add polarity bit indication

This patch introduces polarity indication for pll power up bit
and for standby bit in order to have same code between stih416
and stih407 boards.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@linaro.org>
Acked-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

diff --git a/drivers/clk/st/clkgen-fsyn.c b/drivers/clk/st/clkgen-fsyn.c
index e8d599d..b925580 100644 (file)
--- a/drivers/clk/st/clkgen-fsyn.c
+++ b/drivers/clk/st/clkgen-fsyn.c
@@ -67,6 +67,8 @@ struct clkgen_quadfs_data {
        bool reset_present;
        bool bwfilter_present;
        bool lockstatus_present;
+       bool powerup_polarity;
+       bool standby_polarity;
        bool nsdiv_present;
        struct clkgen_field ndiv;
        struct clkgen_field ref_bw;
@@ -308,7 +310,7 @@ static int quadfs_pll_enable(struct clk_hw *hw)
        /*
         * Power up the PLL
         */
-       CLKGEN_WRITE(pll, npda, 1);
+       CLKGEN_WRITE(pll, npda, !pll->data->powerup_polarity);
 
        if (pll->lock)
                spin_unlock_irqrestore(pll->lock, flags);
@@ -335,7 +337,7 @@ static void quadfs_pll_disable(struct clk_hw *hw)
         * Powerdown the PLL and then put block into soft reset if we have
         * reset control.
         */
-       CLKGEN_WRITE(pll, npda, 0);
+       CLKGEN_WRITE(pll, npda, pll->data->powerup_polarity);
 
        if (pll->data->reset_present)
                CLKGEN_WRITE(pll, nreset, 0);
@@ -611,7 +613,7 @@ static int quadfs_fsynth_enable(struct clk_hw *hw)
        if (fs->lock)
                spin_lock_irqsave(fs->lock, flags);
 
-       CLKGEN_WRITE(fs, nsb[fs->chan], 1);
+       CLKGEN_WRITE(fs, nsb[fs->chan], !fs->data->standby_polarity);
 
        if (fs->lock)
                spin_unlock_irqrestore(fs->lock, flags);
@@ -631,7 +633,7 @@ static void quadfs_fsynth_disable(struct clk_hw *hw)
        if (fs->lock)
                spin_lock_irqsave(fs->lock, flags);
 
-       CLKGEN_WRITE(fs, nsb[fs->chan], 0);
+       CLKGEN_WRITE(fs, nsb[fs->chan], !fs->data->standby_polarity);
 
        if (fs->lock)
                spin_unlock_irqrestore(fs->lock, flags);
@@ -645,7 +647,7 @@ static int quadfs_fsynth_is_enabled(struct clk_hw *hw)
        pr_debug("%s: %s enable bit = 0x%x\n",
                 __func__, __clk_get_name(hw->clk), nsb);
 
-       return !!nsb;
+       return fs->data->standby_polarity ? !nsb : !!nsb;
 }
 
 #define P15                    (uint64_t)(1 << 15)