25 /* DPLL rate rounding: minimum DPLL multiplier, divider values */
33  * Scale factor to mitigate roundoff errors in DPLL rate rounding.
35  * but the closer the rounded rate to the target rate.  DPLL_SCALE_FACTOR
124  * @new_rate: pointer to storage for the resulting rounded rate
125  * @target_rate: the desired DPLL rate
126  * @parent_rate: the DPLL's parent clock rate
129  * resulting rate will not be higher than the target_rate, and that
152 	 * The new rate must be <= the target rate to avoid programming  in _dpll_test_mult()
153 	 * a rate that is impossible for the hardware to handle  in _dpll_test_mult()
225  * omap2_get_dpll_rate - returns the current DPLL CLKOUT rate
230  * bypassed, on OMAP2xxx, the output rate is either the 32KiHz clock
234  * Returns the current DPLL CLKOUT rate (*not* CLKOUTX2) if the DPLL is
235  * locked, or the appropriate bypass rate if the DPLL is bypassed, or 0
248 	/* Return bypass rate if DPLL is bypassed */  in omap2_get_dpll_rate()
268 /* DPLL rate rounding code */
271  * omap2_dpll_determine_rate - round a target rate for an OMAP DPLL
273  * @req: rate request
275  * Given a DPLL and a desired target rate, round the target rate to a
276  * possible, programmable rate for this DPLL.  Attempts to select the
279  * (expensive) function again.  Returns -EINVAL if the target rate
280  * cannot be rounded, or the rounded rate upon success.
300 	if (dd->max_rate && req->rate > dd->max_rate)  in omap2_dpll_determine_rate()
301 		req->rate = dd->max_rate;  in omap2_dpll_determine_rate()
305 	pr_debug("clock: %s: starting DPLL round_rate, target rate %lu\n",  in omap2_dpll_determine_rate()
306 		 clk_name, req->rate);  in omap2_dpll_determine_rate()
308 	scaled_rt_rp = req->rate / (ref_rate / DPLL_SCALE_FACTOR);  in omap2_dpll_determine_rate()
333 		r = _dpll_test_mult(&m, n, &new_rate, req->rate,  in omap2_dpll_determine_rate()
340 		/* skip rates above our target rate */  in omap2_dpll_determine_rate()
341 		delta = req->rate - new_rate;  in omap2_dpll_determine_rate()
359 		pr_debug("clock: %s: cannot round to rate %lu\n",  in omap2_dpll_determine_rate()
360 			 clk_name, req->rate);  in omap2_dpll_determine_rate()
366 	dd->last_rounded_rate = req->rate - prev_min_delta;  in omap2_dpll_determine_rate()
368 	req->rate = dd->last_rounded_rate;  in omap2_dpll_determine_rate()