Lines Matching +full:clk +full:- +full:div
6 * Author: Xing Zheng <zhengxing@rock-chips.com>
10 * samsung/clk.c
27 #include <linux/clk.h>
28 #include <linux/clk-provider.h>
33 #include "clk.h"
39 * src1 --|--\
40 * |M |--[GATE]-[DIV]-
41 * src2 --|--/
45 static struct clk *rockchip_clk_register_branch(const char *name, in rockchip_clk_register_branch()
54 struct clk *clk; in rockchip_clk_register_branch() local
57 struct clk_divider *div = NULL; in rockchip_clk_register_branch() local
65 return ERR_PTR(-ENOMEM); in rockchip_clk_register_branch()
67 mux->reg = base + muxdiv_offset; in rockchip_clk_register_branch()
68 mux->shift = mux_shift; in rockchip_clk_register_branch()
69 mux->mask = BIT(mux_width) - 1; in rockchip_clk_register_branch()
70 mux->flags = mux_flags; in rockchip_clk_register_branch()
71 mux->lock = lock; in rockchip_clk_register_branch()
79 ret = -ENOMEM; in rockchip_clk_register_branch()
83 gate->flags = gate_flags; in rockchip_clk_register_branch()
84 gate->reg = base + gate_offset; in rockchip_clk_register_branch()
85 gate->bit_idx = gate_shift; in rockchip_clk_register_branch()
86 gate->lock = lock; in rockchip_clk_register_branch()
91 div = kzalloc(sizeof(*div), GFP_KERNEL); in rockchip_clk_register_branch()
92 if (!div) { in rockchip_clk_register_branch()
93 ret = -ENOMEM; in rockchip_clk_register_branch()
97 div->flags = div_flags; in rockchip_clk_register_branch()
98 div->reg = base + muxdiv_offset; in rockchip_clk_register_branch()
99 div->shift = div_shift; in rockchip_clk_register_branch()
100 div->width = div_width; in rockchip_clk_register_branch()
101 div->lock = lock; in rockchip_clk_register_branch()
102 div->table = div_table; in rockchip_clk_register_branch()
108 clk = clk_register_composite(NULL, name, parent_names, num_parents, in rockchip_clk_register_branch()
109 mux ? &mux->hw : NULL, mux_ops, in rockchip_clk_register_branch()
110 div ? &div->hw : NULL, div_ops, in rockchip_clk_register_branch()
111 gate ? &gate->hw : NULL, gate_ops, in rockchip_clk_register_branch()
114 if (IS_ERR(clk)) { in rockchip_clk_register_branch()
115 ret = PTR_ERR(clk); in rockchip_clk_register_branch()
119 return clk; in rockchip_clk_register_branch()
121 kfree(div); in rockchip_clk_register_branch()
131 struct clk_fractional_divider div; member
150 struct clk_mux *frac_mux = &frac->mux; in rockchip_clk_frac_notifier_cb()
154 __func__, event, ndata->old_rate, ndata->new_rate); in rockchip_clk_frac_notifier_cb()
156 frac->rate_change_idx = in rockchip_clk_frac_notifier_cb()
157 frac->mux_ops->get_parent(&frac_mux->hw); in rockchip_clk_frac_notifier_cb()
158 if (frac->rate_change_idx != frac->mux_frac_idx) { in rockchip_clk_frac_notifier_cb()
159 frac->mux_ops->set_parent(&frac_mux->hw, in rockchip_clk_frac_notifier_cb()
160 frac->mux_frac_idx); in rockchip_clk_frac_notifier_cb()
161 frac->rate_change_remuxed = 1; in rockchip_clk_frac_notifier_cb()
170 if (frac->rate_change_remuxed) { in rockchip_clk_frac_notifier_cb()
171 frac->mux_ops->set_parent(&frac_mux->hw, in rockchip_clk_frac_notifier_cb()
172 frac->rate_change_idx); in rockchip_clk_frac_notifier_cb()
173 frac->rate_change_remuxed = 0; in rockchip_clk_frac_notifier_cb()
203 * by (scale - fd->nwidth) bits. in rockchip_fractional_approximation()
205 scale = fls_long(*parent_rate / rate - 1); in rockchip_fractional_approximation()
206 if (scale > fd->nwidth) in rockchip_fractional_approximation()
207 rate <<= scale - fd->nwidth; in rockchip_fractional_approximation()
210 GENMASK(fd->mwidth - 1, 0), GENMASK(fd->nwidth - 1, 0), in rockchip_fractional_approximation()
214 static struct clk *rockchip_clk_register_frac_branch( in rockchip_clk_register_frac_branch()
223 struct clk *clk; in rockchip_clk_register_frac_branch() local
225 struct clk_fractional_divider *div = NULL; in rockchip_clk_register_frac_branch() local
229 return ERR_PTR(-EINVAL); in rockchip_clk_register_frac_branch()
231 if (child && child->branch_type != branch_mux) { in rockchip_clk_register_frac_branch()
234 return ERR_PTR(-EINVAL); in rockchip_clk_register_frac_branch()
239 return ERR_PTR(-ENOMEM); in rockchip_clk_register_frac_branch()
242 gate = &frac->gate; in rockchip_clk_register_frac_branch()
243 gate->flags = gate_flags; in rockchip_clk_register_frac_branch()
244 gate->reg = base + gate_offset; in rockchip_clk_register_frac_branch()
245 gate->bit_idx = gate_shift; in rockchip_clk_register_frac_branch()
246 gate->lock = lock; in rockchip_clk_register_frac_branch()
250 div = &frac->div; in rockchip_clk_register_frac_branch()
251 div->flags = div_flags; in rockchip_clk_register_frac_branch()
252 div->reg = base + muxdiv_offset; in rockchip_clk_register_frac_branch()
253 div->mshift = 16; in rockchip_clk_register_frac_branch()
254 div->mwidth = 16; in rockchip_clk_register_frac_branch()
255 div->mmask = GENMASK(div->mwidth - 1, 0) << div->mshift; in rockchip_clk_register_frac_branch()
256 div->nshift = 0; in rockchip_clk_register_frac_branch()
257 div->nwidth = 16; in rockchip_clk_register_frac_branch()
258 div->nmask = GENMASK(div->nwidth - 1, 0) << div->nshift; in rockchip_clk_register_frac_branch()
259 div->lock = lock; in rockchip_clk_register_frac_branch()
260 div->approximation = rockchip_fractional_approximation; in rockchip_clk_register_frac_branch()
263 clk = clk_register_composite(NULL, name, parent_names, num_parents, in rockchip_clk_register_frac_branch()
265 &div->hw, div_ops, in rockchip_clk_register_frac_branch()
266 gate ? &gate->hw : NULL, gate_ops, in rockchip_clk_register_frac_branch()
268 if (IS_ERR(clk)) { in rockchip_clk_register_frac_branch()
270 return clk; in rockchip_clk_register_frac_branch()
274 struct clk_mux *frac_mux = &frac->mux; in rockchip_clk_register_frac_branch()
276 struct clk *mux_clk; in rockchip_clk_register_frac_branch()
279 frac->mux_frac_idx = match_string(child->parent_names, in rockchip_clk_register_frac_branch()
280 child->num_parents, name); in rockchip_clk_register_frac_branch()
281 frac->mux_ops = &clk_mux_ops; in rockchip_clk_register_frac_branch()
282 frac->clk_nb.notifier_call = rockchip_clk_frac_notifier_cb; in rockchip_clk_register_frac_branch()
284 frac_mux->reg = base + child->muxdiv_offset; in rockchip_clk_register_frac_branch()
285 frac_mux->shift = child->mux_shift; in rockchip_clk_register_frac_branch()
286 frac_mux->mask = BIT(child->mux_width) - 1; in rockchip_clk_register_frac_branch()
287 frac_mux->flags = child->mux_flags; in rockchip_clk_register_frac_branch()
288 frac_mux->lock = lock; in rockchip_clk_register_frac_branch()
289 frac_mux->hw.init = &init; in rockchip_clk_register_frac_branch()
291 init.name = child->name; in rockchip_clk_register_frac_branch()
292 init.flags = child->flags | CLK_SET_RATE_PARENT; in rockchip_clk_register_frac_branch()
293 init.ops = frac->mux_ops; in rockchip_clk_register_frac_branch()
294 init.parent_names = child->parent_names; in rockchip_clk_register_frac_branch()
295 init.num_parents = child->num_parents; in rockchip_clk_register_frac_branch()
297 mux_clk = clk_register(NULL, &frac_mux->hw); in rockchip_clk_register_frac_branch()
300 return clk; in rockchip_clk_register_frac_branch()
303 rockchip_clk_add_lookup(ctx, mux_clk, child->id); in rockchip_clk_register_frac_branch()
306 if (frac->mux_frac_idx >= 0) { in rockchip_clk_register_frac_branch()
308 __func__, frac->mux_frac_idx); in rockchip_clk_register_frac_branch()
309 ret = clk_notifier_register(clk, &frac->clk_nb); in rockchip_clk_register_frac_branch()
315 __func__, name, child->name); in rockchip_clk_register_frac_branch()
319 return clk; in rockchip_clk_register_frac_branch()
322 static struct clk *rockchip_clk_register_factor_branch(const char *name, in rockchip_clk_register_factor_branch()
324 void __iomem *base, unsigned int mult, unsigned int div, in rockchip_clk_register_factor_branch() argument
328 struct clk *clk; in rockchip_clk_register_factor_branch() local
336 div); in rockchip_clk_register_factor_branch()
341 return ERR_PTR(-ENOMEM); in rockchip_clk_register_factor_branch()
343 gate->flags = gate_flags; in rockchip_clk_register_factor_branch()
344 gate->reg = base + gate_offset; in rockchip_clk_register_factor_branch()
345 gate->bit_idx = gate_shift; in rockchip_clk_register_factor_branch()
346 gate->lock = lock; in rockchip_clk_register_factor_branch()
351 return ERR_PTR(-ENOMEM); in rockchip_clk_register_factor_branch()
354 fix->mult = mult; in rockchip_clk_register_factor_branch()
355 fix->div = div; in rockchip_clk_register_factor_branch()
357 clk = clk_register_composite(NULL, name, parent_names, num_parents, in rockchip_clk_register_factor_branch()
359 &fix->hw, &clk_fixed_factor_ops, in rockchip_clk_register_factor_branch()
360 &gate->hw, &clk_gate_ops, flags); in rockchip_clk_register_factor_branch()
361 if (IS_ERR(clk)) { in rockchip_clk_register_factor_branch()
366 return clk; in rockchip_clk_register_factor_branch()
373 struct clk **clk_table; in rockchip_clk_init()
378 return ERR_PTR(-ENOMEM); in rockchip_clk_init()
380 clk_table = kcalloc(nr_clks, sizeof(struct clk *), GFP_KERNEL); in rockchip_clk_init()
385 clk_table[i] = ERR_PTR(-ENOENT); in rockchip_clk_init()
387 ctx->reg_base = base; in rockchip_clk_init()
388 ctx->clk_data.clks = clk_table; in rockchip_clk_init()
389 ctx->clk_data.clk_num = nr_clks; in rockchip_clk_init()
390 ctx->cru_node = np; in rockchip_clk_init()
391 spin_lock_init(&ctx->lock); in rockchip_clk_init()
393 ctx->grf = syscon_regmap_lookup_by_phandle(ctx->cru_node, in rockchip_clk_init()
400 return ERR_PTR(-ENOMEM); in rockchip_clk_init()
407 &ctx->clk_data)) in rockchip_clk_of_add_provider()
408 pr_err("%s: could not register clk provider\n", __func__); in rockchip_clk_of_add_provider()
412 struct clk *clk, unsigned int id) in rockchip_clk_add_lookup() argument
414 if (ctx->clk_data.clks && id) in rockchip_clk_add_lookup()
415 ctx->clk_data.clks[id] = clk; in rockchip_clk_add_lookup()
422 struct clk *clk; in rockchip_clk_register_plls() local
426 clk = rockchip_clk_register_pll(ctx, list->type, list->name, in rockchip_clk_register_plls()
427 list->parent_names, list->num_parents, in rockchip_clk_register_plls()
428 list->con_offset, grf_lock_offset, in rockchip_clk_register_plls()
429 list->lock_shift, list->mode_offset, in rockchip_clk_register_plls()
430 list->mode_shift, list->rate_table, in rockchip_clk_register_plls()
431 list->flags, list->pll_flags); in rockchip_clk_register_plls()
432 if (IS_ERR(clk)) { in rockchip_clk_register_plls()
434 list->name); in rockchip_clk_register_plls()
438 rockchip_clk_add_lookup(ctx, clk, list->id); in rockchip_clk_register_plls()
447 struct clk *clk = NULL; in rockchip_clk_register_branches() local
452 flags = list->flags; in rockchip_clk_register_branches()
455 switch (list->branch_type) { in rockchip_clk_register_branches()
457 clk = clk_register_mux(NULL, list->name, in rockchip_clk_register_branches()
458 list->parent_names, list->num_parents, in rockchip_clk_register_branches()
459 flags, ctx->reg_base + list->muxdiv_offset, in rockchip_clk_register_branches()
460 list->mux_shift, list->mux_width, in rockchip_clk_register_branches()
461 list->mux_flags, &ctx->lock); in rockchip_clk_register_branches()
464 clk = rockchip_clk_register_muxgrf(list->name, in rockchip_clk_register_branches()
465 list->parent_names, list->num_parents, in rockchip_clk_register_branches()
466 flags, ctx->grf, list->muxdiv_offset, in rockchip_clk_register_branches()
467 list->mux_shift, list->mux_width, in rockchip_clk_register_branches()
468 list->mux_flags); in rockchip_clk_register_branches()
471 if (list->div_table) in rockchip_clk_register_branches()
472 clk = clk_register_divider_table(NULL, in rockchip_clk_register_branches()
473 list->name, list->parent_names[0], in rockchip_clk_register_branches()
475 ctx->reg_base + list->muxdiv_offset, in rockchip_clk_register_branches()
476 list->div_shift, list->div_width, in rockchip_clk_register_branches()
477 list->div_flags, list->div_table, in rockchip_clk_register_branches()
478 &ctx->lock); in rockchip_clk_register_branches()
480 clk = clk_register_divider(NULL, list->name, in rockchip_clk_register_branches()
481 list->parent_names[0], flags, in rockchip_clk_register_branches()
482 ctx->reg_base + list->muxdiv_offset, in rockchip_clk_register_branches()
483 list->div_shift, list->div_width, in rockchip_clk_register_branches()
484 list->div_flags, &ctx->lock); in rockchip_clk_register_branches()
487 clk = rockchip_clk_register_frac_branch(ctx, list->name, in rockchip_clk_register_branches()
488 list->parent_names, list->num_parents, in rockchip_clk_register_branches()
489 ctx->reg_base, list->muxdiv_offset, in rockchip_clk_register_branches()
490 list->div_flags, in rockchip_clk_register_branches()
491 list->gate_offset, list->gate_shift, in rockchip_clk_register_branches()
492 list->gate_flags, flags, list->child, in rockchip_clk_register_branches()
493 &ctx->lock); in rockchip_clk_register_branches()
496 clk = rockchip_clk_register_halfdiv(list->name, in rockchip_clk_register_branches()
497 list->parent_names, list->num_parents, in rockchip_clk_register_branches()
498 ctx->reg_base, list->muxdiv_offset, in rockchip_clk_register_branches()
499 list->mux_shift, list->mux_width, in rockchip_clk_register_branches()
500 list->mux_flags, list->div_shift, in rockchip_clk_register_branches()
501 list->div_width, list->div_flags, in rockchip_clk_register_branches()
502 list->gate_offset, list->gate_shift, in rockchip_clk_register_branches()
503 list->gate_flags, flags, &ctx->lock); in rockchip_clk_register_branches()
508 clk = clk_register_gate(NULL, list->name, in rockchip_clk_register_branches()
509 list->parent_names[0], flags, in rockchip_clk_register_branches()
510 ctx->reg_base + list->gate_offset, in rockchip_clk_register_branches()
511 list->gate_shift, list->gate_flags, &ctx->lock); in rockchip_clk_register_branches()
514 clk = rockchip_clk_register_branch(list->name, in rockchip_clk_register_branches()
515 list->parent_names, list->num_parents, in rockchip_clk_register_branches()
516 ctx->reg_base, list->muxdiv_offset, in rockchip_clk_register_branches()
517 list->mux_shift, in rockchip_clk_register_branches()
518 list->mux_width, list->mux_flags, in rockchip_clk_register_branches()
519 list->div_shift, list->div_width, in rockchip_clk_register_branches()
520 list->div_flags, list->div_table, in rockchip_clk_register_branches()
521 list->gate_offset, list->gate_shift, in rockchip_clk_register_branches()
522 list->gate_flags, flags, &ctx->lock); in rockchip_clk_register_branches()
525 clk = rockchip_clk_register_mmc( in rockchip_clk_register_branches()
526 list->name, in rockchip_clk_register_branches()
527 list->parent_names, list->num_parents, in rockchip_clk_register_branches()
528 ctx->reg_base + list->muxdiv_offset, in rockchip_clk_register_branches()
529 list->div_shift in rockchip_clk_register_branches()
533 clk = rockchip_clk_register_inverter( in rockchip_clk_register_branches()
534 list->name, list->parent_names, in rockchip_clk_register_branches()
535 list->num_parents, in rockchip_clk_register_branches()
536 ctx->reg_base + list->muxdiv_offset, in rockchip_clk_register_branches()
537 list->div_shift, list->div_flags, &ctx->lock); in rockchip_clk_register_branches()
540 clk = rockchip_clk_register_factor_branch( in rockchip_clk_register_branches()
541 list->name, list->parent_names, in rockchip_clk_register_branches()
542 list->num_parents, ctx->reg_base, in rockchip_clk_register_branches()
543 list->div_shift, list->div_width, in rockchip_clk_register_branches()
544 list->gate_offset, list->gate_shift, in rockchip_clk_register_branches()
545 list->gate_flags, flags, &ctx->lock); in rockchip_clk_register_branches()
548 clk = rockchip_clk_register_ddrclk( in rockchip_clk_register_branches()
549 list->name, list->flags, in rockchip_clk_register_branches()
550 list->parent_names, list->num_parents, in rockchip_clk_register_branches()
551 list->muxdiv_offset, list->mux_shift, in rockchip_clk_register_branches()
552 list->mux_width, list->div_shift, in rockchip_clk_register_branches()
553 list->div_width, list->div_flags, in rockchip_clk_register_branches()
554 ctx->reg_base, &ctx->lock); in rockchip_clk_register_branches()
559 if (!clk) { in rockchip_clk_register_branches()
561 __func__, list->branch_type); in rockchip_clk_register_branches()
565 if (IS_ERR(clk)) { in rockchip_clk_register_branches()
567 __func__, list->name, PTR_ERR(clk)); in rockchip_clk_register_branches()
571 rockchip_clk_add_lookup(ctx, clk, list->id); in rockchip_clk_register_branches()
583 struct clk *clk; in rockchip_clk_register_armclk() local
585 clk = rockchip_clk_register_cpuclk(name, parent_names, num_parents, in rockchip_clk_register_armclk()
587 ctx->reg_base, &ctx->lock); in rockchip_clk_register_armclk()
588 if (IS_ERR(clk)) { in rockchip_clk_register_armclk()
590 __func__, name, PTR_ERR(clk)); in rockchip_clk_register_armclk()
594 rockchip_clk_add_lookup(ctx, clk, lookup_id); in rockchip_clk_register_armclk()
604 struct clk *clk = __clk_lookup(clocks[i]); in rockchip_clk_protect_critical() local
606 if (clk) in rockchip_clk_protect_critical()
607 clk_prepare_enable(clk); in rockchip_clk_protect_critical()
636 rst_base = ctx->reg_base; in rockchip_register_restart_notifier()