14  * (FRAC). FRAC can output between 620 and 700MHz and only multiply the rate of
15  * its own parent. PMC and PAD can then divide the FRAC rate to best match the
16  * asked rate.
20  * rate - rate is adjustable.
21  *        clk->rate = parent->rate * ((nd + 1) + (fracr / 2^22))
26  * rate - rate is adjustable.
27  *        clk->rate = parent->rate / (qdpmc + 1)
32  * rate - rate is adjustable.
33  *        clk->rate = parent->rate / (qdaudio * div))
219 static int clk_audio_pll_frac_compute_frac(unsigned long rate,  in clk_audio_pll_frac_compute_frac()  argument
226 	if (!rate)  in clk_audio_pll_frac_compute_frac()
229 	tmp = rate;  in clk_audio_pll_frac_compute_frac()
253 	pr_debug("A PLL: %s, rate = %lu (parent_rate = %lu)\n", __func__,  in clk_audio_pll_frac_determine_rate()
254 		 req->rate, req->best_parent_rate);  in clk_audio_pll_frac_determine_rate()
256 	req->rate = clamp(req->rate, AUDIO_PLL_FOUT_MIN, AUDIO_PLL_FOUT_MAX);  in clk_audio_pll_frac_determine_rate()
261 	ret = clk_audio_pll_frac_compute_frac(req->rate, req->best_parent_rate,  in clk_audio_pll_frac_determine_rate()
266 	req->rate = clk_audio_pll_fout(req->best_parent_rate, nd, fracr);  in clk_audio_pll_frac_determine_rate()
271 		 __func__, req->rate, nd, fracr);  in clk_audio_pll_frac_determine_rate()
276 static long clk_audio_pll_pad_round_rate(struct clk_hw *hw, unsigned long rate,  in clk_audio_pll_pad_round_rate()  argument
288 	pr_debug("A PLL/PAD: %s, rate = %lu (parent_rate = %lu)\n", __func__,  in clk_audio_pll_pad_round_rate()
289 		 rate, *parent_rate);  in clk_audio_pll_pad_round_rate()
292 	 * Rate divisor is actually made of two different divisors, multiplied  in clk_audio_pll_pad_round_rate()
293 	 * between themselves before dividing the rate.  in clk_audio_pll_pad_round_rate()
295 	 * In order to avoid testing twice the rate divisor (e.g. divisor 12 can  in clk_audio_pll_pad_round_rate()
297 	 * for a rate divisor when div is 2 and tmp_qd is a multiple of 3.  in clk_audio_pll_pad_round_rate()
299 	 * would miss some rate divisor that aren't reachable with div being 2  in clk_audio_pll_pad_round_rate()
300 	 * (e.g. rate divisor 90 is made with div = 3 and tmp_qd = 30, thus  in clk_audio_pll_pad_round_rate()
302 	 * rate divisor which isn't possible since tmp_qd has to be <= 31).  in clk_audio_pll_pad_round_rate()
310 							rate * tmp_qd * div);  in clk_audio_pll_pad_round_rate()
312 			tmp_diff = abs(rate - tmp_rate);  in clk_audio_pll_pad_round_rate()
327 static long clk_audio_pll_pmc_round_rate(struct clk_hw *hw, unsigned long rate,  in clk_audio_pll_pmc_round_rate()  argument
338 	pr_debug("A PLL/PMC: %s, rate = %lu (parent_rate = %lu)\n", __func__,  in clk_audio_pll_pmc_round_rate()
339 		 rate, *parent_rate);  in clk_audio_pll_pmc_round_rate()
342 		best_parent_rate = clk_round_rate(pclk->clk, rate * div);  in clk_audio_pll_pmc_round_rate()
344 		tmp_diff = abs(rate - tmp_rate);  in clk_audio_pll_pmc_round_rate()
360 static int clk_audio_pll_frac_set_rate(struct clk_hw *hw, unsigned long rate,  in clk_audio_pll_frac_set_rate()  argument
367 	pr_debug("A PLL: %s, rate = %lu (parent_rate = %lu)\n", __func__, rate,  in clk_audio_pll_frac_set_rate()
370 	if (rate < AUDIO_PLL_FOUT_MIN || rate > AUDIO_PLL_FOUT_MAX)  in clk_audio_pll_frac_set_rate()
373 	ret = clk_audio_pll_frac_compute_frac(rate, parent_rate, &nd, &fracr);  in clk_audio_pll_frac_set_rate()
383 static int clk_audio_pll_pad_set_rate(struct clk_hw *hw, unsigned long rate,  in clk_audio_pll_pad_set_rate()  argument
389 	pr_debug("A PLL/PAD: %s, rate = %lu (parent_rate = %lu)\n", __func__,  in clk_audio_pll_pad_set_rate()
390 		 rate, parent_rate);  in clk_audio_pll_pad_set_rate()
392 	if (!rate)  in clk_audio_pll_pad_set_rate()
395 	tmp_div = parent_rate / rate;  in clk_audio_pll_pad_set_rate()
407 static int clk_audio_pll_pmc_set_rate(struct clk_hw *hw, unsigned long rate,  in clk_audio_pll_pmc_set_rate()  argument
412 	if (!rate)  in clk_audio_pll_pmc_set_rate()
415 	pr_debug("A PLL/PMC: %s, rate = %lu (parent_rate = %lu)\n", __func__,  in clk_audio_pll_pmc_set_rate()
416 		 rate, parent_rate);  in clk_audio_pll_pmc_set_rate()
418 	apmc_ck->qdpmc = parent_rate / rate - 1;  in clk_audio_pll_pmc_set_rate()