clk: ti: clkctrl: add new exported API for checking standby info

#define OMAP4_IDLEST_MASK		(0x3 << 16)

#define OMAP4_IDLEST_SHIFT		16

#define OMAP4_STBYST_MASK		BIT(18)

#define OMAP4_STBYST_SHIFT		18

#define CLKCTRL_IDLEST_FUNCTIONAL	0x0

#define CLKCTRL_IDLEST_INTERFACE_IDLE	0x2

#define CLKCTRL_IDLEST_DISABLED		0x3

}

CLK_OF_DECLARE(ti_omap4_clkctrl_clock, "ti,clkctrl",

	       _ti_omap4_clkctrl_setup);

/**

 * ti_clk_is_in_standby - Check if clkctrl clock is in standby or not

 * @clk: clock to check standby status for

 *

 * Finds whether the provided clock is in standby mode or not. Returns

 * true if the provided clock is a clkctrl type clock and it is in standby,

 * false otherwise.

 */

bool ti_clk_is_in_standby(struct clk *clk)

{

	struct clk_hw *hw;

	struct clk_hw_omap *hwclk;

	u32 val;

	hw = __clk_get_hw(clk);

	if (!omap2_clk_is_hw_omap(hw))

		return false;

	hwclk = to_clk_hw_omap(hw);

	val = ti_clk_ll_ops->clk_readl(&hwclk->enable_reg);

	if (val & OMAP4_STBYST_MASK)

		return true;

	return false;

}

EXPORT_SYMBOL_GPL(ti_clk_is_in_standby);

void ti_clk_setup_features(struct ti_clk_features *features);

const struct ti_clk_features *ti_clk_get_features(void);

bool ti_clk_is_in_standby(struct clk *clk);

int omap3_noncore_dpll_save_context(struct clk_hw *hw);

void omap3_noncore_dpll_restore_context(struct clk_hw *hw);