4  * Copyright (C) 2006-2008 Andrzej Zaborowski  <balrog@zabor.org>
6  * Clocks data comes in part from arch/arm/mach-omap1/clock.h in Linux.
27 struct clk {  struct
30     struct clk *parent;  argument
31     struct clk *child1;  argument
32     struct clk *sibling;  argument
42     int enabled;		/* Is enabled, regardless of its input clk */  argument
50 static struct clk xtal_osc12m = {  argument
56 static struct clk xtal_osc32k = {
62 static struct clk ck_ref = {
71 static struct clk dpll1 = {
78 static struct clk dpll2 = {
84 static struct clk dpll3 = {
90 static struct clk dpll4 = {
97 static struct clk apll = {
105 static struct clk ck_48m = {
111 static struct clk ck_dpll1out = {
117 static struct clk sossi_ck = {
123 static struct clk clkm1 = {
131 static struct clk clkm2 = {
139 static struct clk clkm3 = {
147 static struct clk arm_ck = {
155 static struct clk armper_ck = {
162 static struct clk arm_gpio_ck = {
170 static struct clk armxor_ck = {
177 static struct clk armtim_ck = {
184 static struct clk armwdt_ck = {
193 static struct clk arminth_ck16xx = {
204 static struct clk dsp_ck = {
210 static struct clk dspmmu_ck = {
217 static struct clk dspper_ck = {
223 static struct clk dspxor_ck = {
229 static struct clk dsptim_ck = {
235 static struct clk tc_ck = {
243 static struct clk arminth_ck15xx = {
253 static struct clk tipb_ck = {
254     /* No-idle controlled by "tc_ck" */
260 static struct clk l3_ocpi_ck = {
261     /* No-idle controlled by "tc_ck" */
267 static struct clk tc1_ck = {
273 static struct clk tc2_ck = {
279 static struct clk dma_ck = {
280     /* No-idle controlled by "tc_ck" */
287 static struct clk dma_lcdfree_ck = {
293 static struct clk api_ck = {
300 static struct clk lb_ck = {
306 static struct clk lbfree_ck = {
312 static struct clk hsab_ck = {
318 static struct clk rhea1_ck = {
324 static struct clk rhea2_ck = {
330 static struct clk lcd_ck_16xx = {
336 static struct clk lcd_ck_1510 = {
342 static struct clk uart1_1510 = {
350 static struct clk uart1_16xx = {
358 static struct clk uart2_ck = {
367 static struct clk uart3_1510 = {
375 static struct clk uart3_16xx = {
383 static struct clk usb_clk0 = {	/* 6 MHz output on W4_USB_CLK0 */
391 static struct clk usb_hhc_ck1510 = {
398 static struct clk usb_hhc_ck16xx = {
402     /* OTG_SYSCON_2.OTG_PADEN == 0 (not 1510-compatible) */
406 static struct clk usb_w2fc_mclk = {
414 static struct clk mclk_1510 = {
421 static struct clk bclk_310 = {
427 static struct clk mclk_310 = {
433 static struct clk mclk_16xx = {
439 static struct clk bclk_1510 = {
446 static struct clk bclk_16xx = {
452 static struct clk mmc1_ck = {
461 static struct clk mmc2_ck = {
470 static struct clk cam_mclk = {
476 static struct clk cam_exclk = {
483 static struct clk cam_lclk = {
488 static struct clk i2c_fck = {
496 static struct clk i2c_ick = {
503 static struct clk clk32k = {
504     .name	= "clk32-kHz",
510 static struct clk *onchip_clks[] = {
513     /* non-ULPD clocks */
582 void omap_clk_adduser(struct clk *clk, qemu_irq user)  in omap_clk_adduser()  argument
586     for (i = clk->users; *i; i ++);  in omap_clk_adduser()
590 struct clk *omap_findclk(struct omap_mpu_state_s *mpu, const char *name)  in omap_findclk()
592     struct clk *i;  in omap_findclk()
594     for (i = mpu->clks; i->name; i ++)  in omap_findclk()
595         if (!strcmp(i->name, name) || (i->alias && !strcmp(i->alias, name)))  in omap_findclk()
600 void omap_clk_get(struct clk *clk)  in omap_clk_get()  argument
602     clk->usecount ++;  in omap_clk_get()
605 void omap_clk_put(struct clk *clk)  in omap_clk_put()  argument
607     if (!(clk->usecount --))  in omap_clk_put()
608         hw_error("%s: %s is not in use\n", __func__, clk->name);  in omap_clk_put()
611 static void omap_clk_update(struct clk *clk)  in omap_clk_update()  argument
615     struct clk *i;  in omap_clk_update()
617     if (clk->parent)  in omap_clk_update()
618         parent = clk->parent->running;  in omap_clk_update()
622     running = parent && (clk->enabled ||  in omap_clk_update()
623                     ((clk->flags & ALWAYS_ENABLED) && clk->usecount));  in omap_clk_update()
624     if (clk->running != running) {  in omap_clk_update()
625         clk->running = running;  in omap_clk_update()
626         for (user = clk->users; *user; user ++)  in omap_clk_update()
628         for (i = clk->child1; i; i = i->sibling)  in omap_clk_update()
633 static void omap_clk_rate_update_full(struct clk *clk, unsigned long int rate,  in omap_clk_rate_update_full()  argument
636     struct clk *i;  in omap_clk_rate_update_full()
639     clk->rate = muldiv64(rate, mult, div);  in omap_clk_rate_update_full()
640     if (clk->running)  in omap_clk_rate_update_full()
641         for (user = clk->users; *user; user ++)  in omap_clk_rate_update_full()
643     for (i = clk->child1; i; i = i->sibling)  in omap_clk_rate_update_full()
645                         div * i->divisor, mult * i->multiplier);  in omap_clk_rate_update_full()
648 static void omap_clk_rate_update(struct clk *clk)  in omap_clk_rate_update()  argument
650     struct clk *i;  in omap_clk_rate_update()
653     for (i = clk; i->parent; i = i->parent) {  in omap_clk_rate_update()
654         div *= i->divisor;  in omap_clk_rate_update()
655         mult *= i->multiplier;  in omap_clk_rate_update()
658     omap_clk_rate_update_full(clk, i->rate, div, mult);  in omap_clk_rate_update()
661 void omap_clk_reparent(struct clk *clk, struct clk *parent)  in omap_clk_reparent()  argument
663     struct clk **p;  in omap_clk_reparent()
665     if (clk->parent) {  in omap_clk_reparent()
666         for (p = &clk->parent->child1; *p != clk; p = &(*p)->sibling);  in omap_clk_reparent()
667         *p = clk->sibling;  in omap_clk_reparent()
670     clk->parent = parent;  in omap_clk_reparent()
672         clk->sibling = parent->child1;  in omap_clk_reparent()
673         parent->child1 = clk;  in omap_clk_reparent()
674         omap_clk_update(clk);  in omap_clk_reparent()
675         omap_clk_rate_update(clk);  in omap_clk_reparent()
677         clk->sibling = NULL;  in omap_clk_reparent()
680 void omap_clk_onoff(struct clk *clk, int on)  in omap_clk_onoff()  argument
682     clk->enabled = on;  in omap_clk_onoff()
683     omap_clk_update(clk);  in omap_clk_onoff()
686 void omap_clk_canidle(struct clk *clk, int can)  in omap_clk_canidle()  argument
689         omap_clk_put(clk);  in omap_clk_canidle()
691         omap_clk_get(clk);  in omap_clk_canidle()
694 void omap_clk_setrate(struct clk *clk, int divide, int multiply)  in omap_clk_setrate()  argument
696     clk->divisor = divide;  in omap_clk_setrate()
697     clk->multiplier = multiply;  in omap_clk_setrate()
698     omap_clk_rate_update(clk);  in omap_clk_setrate()
701 int64_t omap_clk_getrate(omap_clk clk)  in omap_clk_getrate()  argument
703     return clk->rate;  in omap_clk_getrate()
708     struct clk **i, *j, *k;  in omap_clk_init()
720         if ((*i)->flags & flag)  in omap_clk_init()
722     mpu->clks = g_new0(struct clk, count + 1);  in omap_clk_init()
723     for (i = onchip_clks, j = mpu->clks; *i; i ++)  in omap_clk_init()
724         if ((*i)->flags & flag) {  in omap_clk_init()
725             memcpy(j, *i, sizeof(struct clk));  in omap_clk_init()
726             for (k = mpu->clks; k < j; k ++)  in omap_clk_init()
727                 if (j->parent && !strcmp(j->parent->name, k->name)) {  in omap_clk_init()
728                     j->parent = k;  in omap_clk_init()
729                     j->sibling = k->child1;  in omap_clk_init()
730                     k->child1 = j;  in omap_clk_init()
731                 } else if (k->parent && !strcmp(k->parent->name, j->name)) {  in omap_clk_init()
732                     k->parent = j;  in omap_clk_init()
733                     k->sibling = j->child1;  in omap_clk_init()
734                     j->child1 = k;  in omap_clk_init()
736             j->divisor = j->divisor ?: 1;  in omap_clk_init()
737             j->multiplier = j->multiplier ?: 1;  in omap_clk_init()
740     for (j = mpu->clks; count --; j ++) {  in omap_clk_init()