3  * TI Divider Clock
32 static void _setup_mask(struct clk_omap_divider *divider)  in _setup_mask()  argument
38 	if (divider->table) {  in _setup_mask()
41 		for (clkt = divider->table; clkt->div; clkt++)  in _setup_mask()
45 		max_val = divider->max;  in _setup_mask()
47 		if (!(divider->flags & CLK_DIVIDER_ONE_BASED) &&  in _setup_mask()
48 		    !(divider->flags & CLK_DIVIDER_POWER_OF_TWO))  in _setup_mask()
52 	if (divider->flags & CLK_DIVIDER_POWER_OF_TWO)  in _setup_mask()
57 	divider->mask = (1 << fls(mask)) - 1;  in _setup_mask()
60 static unsigned int _get_div(struct clk_omap_divider *divider, unsigned int val)  in _get_div()  argument
62 	if (divider->flags & CLK_DIVIDER_ONE_BASED)  in _get_div()
64 	if (divider->flags & CLK_DIVIDER_POWER_OF_TWO)  in _get_div()
66 	if (divider->table)  in _get_div()
67 		return _get_table_div(divider->table, val);  in _get_div()
82 static unsigned int _get_val(struct clk_omap_divider *divider, u8 div)  in _get_val()  argument
84 	if (divider->flags & CLK_DIVIDER_ONE_BASED)  in _get_val()
86 	if (divider->flags & CLK_DIVIDER_POWER_OF_TWO)  in _get_val()
88 	if (divider->table)  in _get_val()
89 		return  _get_table_val(divider->table, div);  in _get_val()
96 	struct clk_omap_divider *divider = to_clk_omap_divider(hw);  in ti_clk_divider_recalc_rate()  local
99 	val = ti_clk_ll_ops->clk_readl(&divider->reg) >> divider->shift;  in ti_clk_divider_recalc_rate()
100 	val &= divider->mask;  in ti_clk_divider_recalc_rate()
102 	div = _get_div(divider, val);  in ti_clk_divider_recalc_rate()
104 		WARN(!(divider->flags & CLK_DIVIDER_ALLOW_ZERO),  in ti_clk_divider_recalc_rate()
130 static bool _is_valid_div(struct clk_omap_divider *divider, unsigned int div)  in _is_valid_div()  argument
132 	if (divider->flags & CLK_DIVIDER_POWER_OF_TWO)  in _is_valid_div()
134 	if (divider->table)  in _is_valid_div()
135 		return _is_valid_table_div(divider->table, div);  in _is_valid_div()
171 	struct clk_omap_divider *divider = to_clk_omap_divider(hw);  in ti_clk_divider_bestdiv()  local
179 	maxdiv = divider->max;  in ti_clk_divider_bestdiv()
183 		bestdiv = _div_round(divider->table, parent_rate, rate);  in ti_clk_divider_bestdiv()
190 	 * The maximum divider we can use without overflowing  in ti_clk_divider_bestdiv()
196 		if (!_is_valid_div(divider, i))  in ti_clk_divider_bestdiv()
202 			 * parent rate, so return the divider immediately.  in ti_clk_divider_bestdiv()
218 		bestdiv = divider->max;  in ti_clk_divider_bestdiv()
238 	struct clk_omap_divider *divider;  in ti_clk_divider_set_rate()  local
245 	divider = to_clk_omap_divider(hw);  in ti_clk_divider_set_rate()
249 	if (div > divider->max)  in ti_clk_divider_set_rate()
250 		div = divider->max;  in ti_clk_divider_set_rate()
251 	if (div < divider->min)  in ti_clk_divider_set_rate()
252 		div = divider->min;  in ti_clk_divider_set_rate()
254 	value = _get_val(divider, div);  in ti_clk_divider_set_rate()
256 	val = ti_clk_ll_ops->clk_readl(&divider->reg);  in ti_clk_divider_set_rate()
257 	val &= ~(divider->mask << divider->shift);  in ti_clk_divider_set_rate()
258 	val |= value << divider->shift;  in ti_clk_divider_set_rate()
259 	ti_clk_ll_ops->clk_writel(val, &divider->reg);  in ti_clk_divider_set_rate()
261 	ti_clk_latch(&divider->reg, divider->latch);  in ti_clk_divider_set_rate()
267  * clk_divider_save_context - Save the divider value
270  * Save the divider value
274 	struct clk_omap_divider *divider = to_clk_omap_divider(hw);  in clk_divider_save_context()  local
277 	val = ti_clk_ll_ops->clk_readl(&divider->reg) >> divider->shift;  in clk_divider_save_context()
278 	divider->context = val & divider->mask;  in clk_divider_save_context()
284  * clk_divider_restore_context - restore the saved the divider value
287  * Restore the saved the divider value
291 	struct clk_omap_divider *divider = to_clk_omap_divider(hw);  in clk_divider_restore_context()  local
294 	val = ti_clk_ll_ops->clk_readl(&divider->reg);  in clk_divider_restore_context()
295 	val &= ~(divider->mask << divider->shift);  in clk_divider_restore_context()
296 	val |= divider->context << divider->shift;  in clk_divider_restore_context()
297 	ti_clk_ll_ops->clk_writel(val, &divider->reg);  in clk_divider_restore_context()
332 			      u8 flags, struct clk_omap_divider *divider)  in ti_clk_parse_divider_data()  argument
340 		divider->min = 1;  in ti_clk_parse_divider_data()
341 		divider->max = max_div;  in ti_clk_parse_divider_data()
342 		_setup_mask(divider);  in ti_clk_parse_divider_data()
375 	divider->min = min_div;  in ti_clk_parse_divider_data()
376 	divider->max = max_div;  in ti_clk_parse_divider_data()
377 	divider->table = tmp;  in ti_clk_parse_divider_data()
378 	_setup_mask(divider);  in ti_clk_parse_divider_data()
402 	/* Determine required size for divider table */  in ti_clk_get_div_table()
435 				     struct clk_omap_divider *divider)  in _populate_divider_min_max()  argument
442 	if (!divider->table) {  in _populate_divider_min_max()
443 		/* Clk divider table not provided, determine min/max divs */  in _populate_divider_min_max()
453 		for (clkt = divider->table; clkt->div; clkt++) {  in _populate_divider_min_max()
462 	divider->min = min_div;  in _populate_divider_min_max()
463 	divider->max = max_div;  in _populate_divider_min_max()
464 	_setup_mask(divider);  in _populate_divider_min_max()
510  * Sets up a basic divider clock.
536 CLK_OF_DECLARE(divider_clk, "ti,divider-clock", of_ti_divider_clk_setup);
557 CLK_OF_DECLARE(ti_composite_divider_clk, "ti,composite-divider-clock",