12 #include <linux/clk.h>
27 struct clk {  struct
28 	struct clk	*parent;  argument
35 	unsigned long	(*get_rate)(struct clk *clk);  argument
36 	int		(*set_rate)(struct clk *clk, unsigned long rate);  argument
40 static unsigned long get_uart_rate(struct clk *clk);
42 static int set_keytchclk_rate(struct clk *clk, unsigned long rate);
43 static int set_div_rate(struct clk *clk, unsigned long rate);
44 static int set_i2s_sclk_rate(struct clk *clk, unsigned long rate);
45 static int set_i2s_lrclk_rate(struct clk *clk, unsigned long rate);
47 static struct clk clk_xtali = {
50 static struct clk clk_uart1 = {
57 static struct clk clk_uart2 = {
64 static struct clk clk_uart3 = {
71 static struct clk clk_pll1 = {
74 static struct clk clk_f = {
77 static struct clk clk_h = {
80 static struct clk clk_p = {
83 static struct clk clk_pll2 = {
86 static struct clk clk_usb_host = {
91 static struct clk clk_keypad = {
98 static struct clk clk_adc = {
105 static struct clk clk_spi = {
109 static struct clk clk_pwm = {
114 static struct clk clk_video = {
121 static struct clk clk_i2s_mclk = {
128 static struct clk clk_i2s_sclk = {
136 static struct clk clk_i2s_lrclk = {
145 static struct clk clk_m2p0 = {
150 static struct clk clk_m2p1 = {
155 static struct clk clk_m2p2 = {
160 static struct clk clk_m2p3 = {
165 static struct clk clk_m2p4 = {
170 static struct clk clk_m2p5 = {
175 static struct clk clk_m2p6 = {
180 static struct clk clk_m2p7 = {
185 static struct clk clk_m2p8 = {
190 static struct clk clk_m2p9 = {
195 static struct clk clk_m2m0 = {
200 static struct clk clk_m2m1 = {
207 	{ .dev_id = dev, .con_id = con, .clk = ck }
244 static void __clk_enable(struct clk *clk)  in __clk_enable()  argument
246 	if (!clk->users++) {  in __clk_enable()
247 		if (clk->parent)  in __clk_enable()
248 			__clk_enable(clk->parent);  in __clk_enable()
250 		if (clk->enable_reg) {  in __clk_enable()
253 			v = __raw_readl(clk->enable_reg);  in __clk_enable()
254 			v |= clk->enable_mask;  in __clk_enable()
255 			if (clk->sw_locked)  in __clk_enable()
256 				ep93xx_syscon_swlocked_write(v, clk->enable_reg);  in __clk_enable()
258 				__raw_writel(v, clk->enable_reg);  in __clk_enable()
263 int clk_enable(struct clk *clk)  in clk_enable()  argument
267 	if (!clk)  in clk_enable()
271 	__clk_enable(clk);  in clk_enable()
278 static void __clk_disable(struct clk *clk)  in __clk_disable()  argument
280 	if (!--clk->users) {  in __clk_disable()
281 		if (clk->enable_reg) {  in __clk_disable()
284 			v = __raw_readl(clk->enable_reg);  in __clk_disable()
285 			v &= ~clk->enable_mask;  in __clk_disable()
286 			if (clk->sw_locked)  in __clk_disable()
287 				ep93xx_syscon_swlocked_write(v, clk->enable_reg);  in __clk_disable()
289 				__raw_writel(v, clk->enable_reg);  in __clk_disable()
292 		if (clk->parent)  in __clk_disable()
293 			__clk_disable(clk->parent);  in __clk_disable()
297 void clk_disable(struct clk *clk)  in clk_disable()  argument
301 	if (!clk)  in clk_disable()
305 	__clk_disable(clk);  in clk_disable()
310 static unsigned long get_uart_rate(struct clk *clk)  in get_uart_rate()  argument
312 	unsigned long rate = clk_get_rate(clk->parent);  in get_uart_rate()
322 unsigned long clk_get_rate(struct clk *clk)  in clk_get_rate()  argument
324 	if (clk->get_rate)  in clk_get_rate()
325 		return clk->get_rate(clk);  in clk_get_rate()
327 	return clk->rate;  in clk_get_rate()
331 static int set_keytchclk_rate(struct clk *clk, unsigned long rate)  in set_keytchclk_rate()  argument
336 	val = __raw_readl(clk->enable_reg);  in set_keytchclk_rate()
345 	div_bit = clk->enable_mask >> 15;  in set_keytchclk_rate()
354 	ep93xx_syscon_swlocked_write(val, clk->enable_reg);  in set_keytchclk_rate()
355 	clk->rate = rate;  in set_keytchclk_rate()
359 static int calc_clk_div(struct clk *clk, unsigned long rate,  in calc_clk_div()  argument
362 	struct clk *mclk;  in calc_clk_div()
401 				clk->parent = mclk;  in calc_clk_div()
402 				clk->rate = actual_rate;  in calc_clk_div()
415 static int set_div_rate(struct clk *clk, unsigned long rate)  in set_div_rate()  argument
420 	err = calc_clk_div(clk, rate, &psel, &esel, &pdiv, &div);  in set_div_rate()
425 	val = __raw_readl(clk->enable_reg);  in set_div_rate()
432 	ep93xx_syscon_swlocked_write(val, clk->enable_reg);  in set_div_rate()
436 static int set_i2s_sclk_rate(struct clk *clk, unsigned long rate)  in set_i2s_sclk_rate()  argument
438 	unsigned val = __raw_readl(clk->enable_reg);  in set_i2s_sclk_rate()
442 					     clk->enable_reg);  in set_i2s_sclk_rate()
445 					     clk->enable_reg);  in set_i2s_sclk_rate()
453 static int set_i2s_lrclk_rate(struct clk *clk, unsigned long rate)  in set_i2s_lrclk_rate()  argument
455 	unsigned val = __raw_readl(clk->enable_reg) &   in set_i2s_lrclk_rate()
460 					     clk->enable_reg);  in set_i2s_lrclk_rate()
463 					     clk->enable_reg);  in set_i2s_lrclk_rate()
466 					     clk->enable_reg);  in set_i2s_lrclk_rate()
474 int clk_set_rate(struct clk *clk, unsigned long rate)  in clk_set_rate()  argument
476 	if (clk->set_rate)  in clk_set_rate()
477 		return clk->set_rate(clk, rate);  in clk_set_rate()
483 long clk_round_rate(struct clk *clk, unsigned long rate)  in clk_round_rate()  argument
485 	WARN_ON(clk);  in clk_round_rate()
490 int clk_set_parent(struct clk *clk, struct clk *parent)  in clk_set_parent()  argument
492 	WARN_ON(clk);  in clk_set_parent()
497 struct clk *clk_get_parent(struct clk *clk)  in clk_get_parent()  argument
499 	return clk->parent;  in clk_get_parent()