10  * (FRAC). FRAC can output between 620 and 700MHz and only multiply the rate of
11  * its own parent. PMC and PAD can then divide the FRAC rate to best match the
12  * asked rate.
16  * rate - rate is adjustable.
17  *        clk->rate = parent->rate * ((nd + 1) + (fracr / 2^22))
22  * rate - rate is adjustable.
23  *        clk->rate = parent->rate / (qdpmc + 1)
28  * rate - rate is adjustable.
29  *        clk->rate = parent->rate / (qdaudio * div))
216 static int clk_audio_pll_frac_compute_frac(unsigned long rate,  in clk_audio_pll_frac_compute_frac()  argument
223 	if (!rate)  in clk_audio_pll_frac_compute_frac()
226 	tmp = rate;  in clk_audio_pll_frac_compute_frac()
250 	pr_debug("A PLL: %s, rate = %lu (parent_rate = %lu)\n", __func__,  in clk_audio_pll_frac_determine_rate()
251 		 req->rate, req->best_parent_rate);  in clk_audio_pll_frac_determine_rate()
253 	req->rate = clamp(req->rate, AUDIO_PLL_FOUT_MIN, AUDIO_PLL_FOUT_MAX);  in clk_audio_pll_frac_determine_rate()
258 	ret = clk_audio_pll_frac_compute_frac(req->rate, req->best_parent_rate,  in clk_audio_pll_frac_determine_rate()
263 	req->rate = clk_audio_pll_fout(req->best_parent_rate, nd, fracr);  in clk_audio_pll_frac_determine_rate()
268 		 __func__, req->rate, nd, fracr);  in clk_audio_pll_frac_determine_rate()
273 static long clk_audio_pll_pad_round_rate(struct clk_hw *hw, unsigned long rate,  in clk_audio_pll_pad_round_rate()  argument
285 	pr_debug("A PLL/PAD: %s, rate = %lu (parent_rate = %lu)\n", __func__,  in clk_audio_pll_pad_round_rate()
286 		 rate, *parent_rate);  in clk_audio_pll_pad_round_rate()
289 	 * Rate divisor is actually made of two different divisors, multiplied  in clk_audio_pll_pad_round_rate()
290 	 * between themselves before dividing the rate.  in clk_audio_pll_pad_round_rate()
292 	 * In order to avoid testing twice the rate divisor (e.g. divisor 12 can  in clk_audio_pll_pad_round_rate()
294 	 * for a rate divisor when div is 2 and tmp_qd is a multiple of 3.  in clk_audio_pll_pad_round_rate()
296 	 * would miss some rate divisor that aren't reachable with div being 2  in clk_audio_pll_pad_round_rate()
297 	 * (e.g. rate divisor 90 is made with div = 3 and tmp_qd = 30, thus  in clk_audio_pll_pad_round_rate()
299 	 * rate divisor which isn't possible since tmp_qd has to be <= 31).  in clk_audio_pll_pad_round_rate()
307 							rate * tmp_qd * div);  in clk_audio_pll_pad_round_rate()
309 			tmp_diff = abs(rate - tmp_rate);  in clk_audio_pll_pad_round_rate()
324 static long clk_audio_pll_pmc_round_rate(struct clk_hw *hw, unsigned long rate,  in clk_audio_pll_pmc_round_rate()  argument
335 	pr_debug("A PLL/PMC: %s, rate = %lu (parent_rate = %lu)\n", __func__,  in clk_audio_pll_pmc_round_rate()
336 		 rate, *parent_rate);  in clk_audio_pll_pmc_round_rate()
338 	if (!rate)  in clk_audio_pll_pmc_round_rate()
342 	div = max(best_parent_rate / rate, 1UL);  in clk_audio_pll_pmc_round_rate()
344 		best_parent_rate = clk_round_rate(pclk->clk, rate * div);  in clk_audio_pll_pmc_round_rate()
346 		tmp_diff = abs(rate - tmp_rate);  in clk_audio_pll_pmc_round_rate()
364 static int clk_audio_pll_frac_set_rate(struct clk_hw *hw, unsigned long rate,  in clk_audio_pll_frac_set_rate()  argument
371 	pr_debug("A PLL: %s, rate = %lu (parent_rate = %lu)\n", __func__, rate,  in clk_audio_pll_frac_set_rate()
374 	if (rate < AUDIO_PLL_FOUT_MIN || rate > AUDIO_PLL_FOUT_MAX)  in clk_audio_pll_frac_set_rate()
377 	ret = clk_audio_pll_frac_compute_frac(rate, parent_rate, &nd, &fracr);  in clk_audio_pll_frac_set_rate()
387 static int clk_audio_pll_pad_set_rate(struct clk_hw *hw, unsigned long rate,  in clk_audio_pll_pad_set_rate()  argument
393 	pr_debug("A PLL/PAD: %s, rate = %lu (parent_rate = %lu)\n", __func__,  in clk_audio_pll_pad_set_rate()
394 		 rate, parent_rate);  in clk_audio_pll_pad_set_rate()
396 	if (!rate)  in clk_audio_pll_pad_set_rate()
399 	tmp_div = parent_rate / rate;  in clk_audio_pll_pad_set_rate()
411 static int clk_audio_pll_pmc_set_rate(struct clk_hw *hw, unsigned long rate,  in clk_audio_pll_pmc_set_rate()  argument
416 	if (!rate)  in clk_audio_pll_pmc_set_rate()
419 	pr_debug("A PLL/PMC: %s, rate = %lu (parent_rate = %lu)\n", __func__,  in clk_audio_pll_pmc_set_rate()
420 		 rate, parent_rate);  in clk_audio_pll_pmc_set_rate()
422 	apmc_ck->qdpmc = parent_rate / rate - 1;  in clk_audio_pll_pmc_set_rate()