6  * Tero Kristo <t-kristo@ti.com>
19 #include <linux/clk-provider.h>
48 static void clk_memmap_writel(u32 val, const struct clk_omap_reg *reg)  in clk_memmap_writel()  argument
50 	struct clk_iomap *io = clk_memmaps[reg->index];  in clk_memmap_writel()
52 	if (reg->ptr)  in clk_memmap_writel()
53 		writel_relaxed(val, reg->ptr);  in clk_memmap_writel()
54 	else if (io->regmap)  in clk_memmap_writel()
55 		regmap_write(io->regmap, reg->offset, val);  in clk_memmap_writel()
57 		writel_relaxed(val, io->mem + reg->offset);  in clk_memmap_writel()
70 static void clk_memmap_rmw(u32 val, u32 mask, const struct clk_omap_reg *reg)  in clk_memmap_rmw()  argument
72 	struct clk_iomap *io = clk_memmaps[reg->index];  in clk_memmap_rmw()
74 	if (reg->ptr) {  in clk_memmap_rmw()
75 		_clk_rmw(val, mask, reg->ptr);  in clk_memmap_rmw()
76 	} else if (io->regmap) {  in clk_memmap_rmw()
77 		regmap_update_bits(io->regmap, reg->offset, mask, val);  in clk_memmap_rmw()
79 		_clk_rmw(val, mask, io->mem + reg->offset);  in clk_memmap_rmw()
83 static u32 clk_memmap_readl(const struct clk_omap_reg *reg)  in clk_memmap_readl()  argument
86 	struct clk_iomap *io = clk_memmaps[reg->index];  in clk_memmap_readl()
88 	if (reg->ptr)  in clk_memmap_readl()
89 		val = readl_relaxed(reg->ptr);  in clk_memmap_readl()
90 	else if (io->regmap)  in clk_memmap_readl()
91 		regmap_read(io->regmap, reg->offset, &val);  in clk_memmap_readl()
93 		val = readl_relaxed(io->mem + reg->offset);  in clk_memmap_readl()
99  * ti_clk_setup_ll_ops - setup low level clock operations
104  * specific code. Returns 0 on success, -EBUSY if ll_ops have been
111 		return -EBUSY;  in ti_clk_setup_ll_ops()
115 	ops->clk_readl = clk_memmap_readl;  in ti_clk_setup_ll_ops()
116 	ops->clk_writel = clk_memmap_writel;  in ti_clk_setup_ll_ops()
117 	ops->clk_rmw = clk_memmap_rmw;  in ti_clk_setup_ll_ops()
123  * ti_dt_clocks_register - register DT alias clocks during boot
126  * Register alias or non-standard DT clock entries during boot. By
128  * additional con-id / dev-id -> clock mapping is required, use this
147 	compat_mode = ti_clk_get_features()->flags & TI_CLK_CLKCTRL_COMPAT;  in ti_dt_clocks_register()
149 	for (c = oclks; c->node_name != NULL; c++) {  in ti_dt_clocks_register()
150 		strcpy(buf, c->node_name);  in ti_dt_clocks_register()
159 						c->node_name);  in ti_dt_clocks_register()
186 					c->node_name, i, tags[i]);  in ti_dt_clocks_register()
194 			c->lk.clk = clk;  in ti_dt_clocks_register()
195 			clkdev_add(&c->lk);  in ti_dt_clocks_register()
214 				c->node_name, PTR_ERR(clk));  in ti_dt_clocks_register()
229  * ti_clk_retry_init - retries a failed clock init at later phase
245 		return -ENOMEM;  in ti_clk_retry_init()
247 	retry->node = node;  in ti_clk_retry_init()
248 	retry->func = func;  in ti_clk_retry_init()
249 	retry->user = user;  in ti_clk_retry_init()
250 	list_add(&retry->link, &retry_list);  in ti_clk_retry_init()
256  * ti_clk_get_reg_addr - get register address for a clock register
259  * @reg: pointer to target register struct
262  * the data via the provided output pointer @reg. Returns 0 on success,
266 			struct clk_omap_reg *reg)  in ti_clk_get_reg_addr()  argument
272 		if (clocks_node_ptr[i] == node->parent)  in ti_clk_get_reg_addr()
277 		pr_err("clk-provider not found for %pOFn!\n", node);  in ti_clk_get_reg_addr()
278 		return -ENOENT;  in ti_clk_get_reg_addr()
281 	reg->index = i;  in ti_clk_get_reg_addr()
283 	if (of_property_read_u32_index(node, "reg", index, &val)) {  in ti_clk_get_reg_addr()
284 		pr_err("%pOFn must have reg[%d]!\n", node, index);  in ti_clk_get_reg_addr()
285 		return -EINVAL;  in ti_clk_get_reg_addr()
288 	reg->offset = val;  in ti_clk_get_reg_addr()
289 	reg->ptr = NULL;  in ti_clk_get_reg_addr()
294 void ti_clk_latch(struct clk_omap_reg *reg, s8 shift)  in ti_clk_latch()  argument
303 	ti_clk_ll_ops->clk_rmw(latch, latch, reg);  in ti_clk_latch()
304 	ti_clk_ll_ops->clk_rmw(0, latch, reg);  in ti_clk_latch()
305 	ti_clk_ll_ops->clk_readl(reg); /* OCP barrier */  in ti_clk_latch()
309  * omap2_clk_provider_init - init master clock provider
332 		return -EINVAL;  in omap2_clk_provider_init()
340 		return -ENOMEM;  in omap2_clk_provider_init()
342 	io->regmap = syscon;  in omap2_clk_provider_init()
343 	io->mem = mem;  in omap2_clk_provider_init()
351  * omap2_clk_legacy_provider_init - initialize a legacy clock provider
366 	io->mem = mem;  in omap2_clk_legacy_provider_init()
372  * ti_dt_clk_init_retry_clks - init clocks from the retry list
387 			pr_debug("retry-init: %pOFn\n", retry->node);  in ti_dt_clk_init_retry_clks()
388 			retry->func(retry->user, retry->node);  in ti_dt_clk_init_retry_clks()
389 			list_del(&retry->link);  in ti_dt_clk_init_retry_clks()
392 		retries--;  in ti_dt_clk_init_retry_clks()
397 	{ .compatible = "fixed-clock" },
398 	{ .compatible = "fixed-factor-clock" },
403  * ti_clk_add_aliases - setup clock aliases
418 		ti_clk_add_alias(NULL, clk, np->name);  in ti_clk_add_aliases()
423  * ti_clk_setup_features - setup clock features flags
435  * ti_clk_get_features - get clock driver features flags
446  * omap2_clk_enable_init_clocks - prepare & enable a list of clocks
447  * @clk_names: ptr to an array of strings of clock names to enable
448  * @num_clocks: number of clock names in @clk_names
470  * ti_clk_add_alias - add a clock alias for a TI clock
491 		return -ENOMEM;  in ti_clk_add_alias()
494 		cl->dev_id = dev_name(dev);  in ti_clk_add_alias()
495 	cl->con_id = con;  in ti_clk_add_alias()
496 	cl->clk = clk;  in ti_clk_add_alias()
504  * ti_clk_register - register a TI clock to the common clock framework
533  * ti_clk_register_omap_hw - register a clk_hw_omap to the clock framework
555 	list_add(&oclk->node, &clk_hw_omap_clocks);  in ti_clk_register_omap_hw()
561  * omap2_clk_for_each - call function for each registered clk_hw_omap
566  * failure.  If @fn returns non-zero, the iteration across clocks
567  * will stop and the non-zero return value will be passed to the
585  * omap2_clk_is_hw_omap - check if the provided clk_hw is OMAP clock
596 		if (&oclk->hw == hw)  in omap2_clk_is_hw_omap()