6  * Tero Kristo <t-kristo@ti.com>
19 #include <linux/clk-provider.h>
22 #include <linux/io.h>
43 	void __iomem *mem;  member
50 	struct clk_iomap *io = clk_memmaps[reg->index];  in clk_memmap_writel()  local
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()
72 	struct clk_iomap *io = clk_memmaps[reg->index];  in clk_memmap_rmw()  local
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()
86 	struct clk_iomap *io = clk_memmaps[reg->index];  in clk_memmap_readl()  local
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()
189 					c->node_name, i, tags[i]);  in ti_dt_clocks_register()
197 			c->lk.clk = clk;  in ti_dt_clocks_register()
198 			clkdev_add(&c->lk);  in ti_dt_clocks_register()
217 				c->node_name, PTR_ERR(clk));  in ti_dt_clocks_register()
232  * ti_clk_retry_init - retries a failed clock init at later phase
248 		return -ENOMEM;  in ti_clk_retry_init()
250 	retry->node = node;  in ti_clk_retry_init()
251 	retry->func = func;  in ti_clk_retry_init()
252 	retry->user = user;  in ti_clk_retry_init()
253 	list_add(&retry->link, &retry_list);  in ti_clk_retry_init()
259  * ti_clk_get_reg_addr - get register address for a clock register
275 		if (clocks_node_ptr[i] == node->parent)  in ti_clk_get_reg_addr()
280 		pr_err("clk-provider not found for %pOFn!\n", node);  in ti_clk_get_reg_addr()
281 		return -ENOENT;  in ti_clk_get_reg_addr()
284 	reg->index = i;  in ti_clk_get_reg_addr()
288 		return -EINVAL;  in ti_clk_get_reg_addr()
291 	reg->offset = val;  in ti_clk_get_reg_addr()
292 	reg->ptr = NULL;  in ti_clk_get_reg_addr()
306 	ti_clk_ll_ops->clk_rmw(latch, latch, reg);  in ti_clk_latch()
307 	ti_clk_ll_ops->clk_rmw(0, latch, reg);  in ti_clk_latch()
308 	ti_clk_ll_ops->clk_readl(reg); /* OCP barrier */  in ti_clk_latch()
312  * omap2_clk_provider_init - init master clock provider
316  * @mem: iomem pointer for the clock provider memory area, only used if
326 				   struct regmap *syscon, void __iomem *mem)  in omap2_clk_provider_init()  argument
329 	struct clk_iomap *io;  in omap2_clk_provider_init()  local
335 		return -EINVAL;  in omap2_clk_provider_init()
341 	io = kzalloc(sizeof(*io), GFP_KERNEL);  in omap2_clk_provider_init()
342 	if (!io)  in omap2_clk_provider_init()
343 		return -ENOMEM;  in omap2_clk_provider_init()
345 	io->regmap = syscon;  in omap2_clk_provider_init()
346 	io->mem = mem;  in omap2_clk_provider_init()
348 	clk_memmaps[index] = io;  in omap2_clk_provider_init()
354  * omap2_clk_legacy_provider_init - initialize a legacy clock provider
356  * @mem: iomem pointer for the clock provider memory area
360 void __init omap2_clk_legacy_provider_init(int index, void __iomem *mem)  in omap2_clk_legacy_provider_init()  argument
362 	struct clk_iomap *io;  in omap2_clk_legacy_provider_init()  local
364 	io = memblock_alloc(sizeof(*io), SMP_CACHE_BYTES);  in omap2_clk_legacy_provider_init()
365 	if (!io)  in omap2_clk_legacy_provider_init()
367 		      sizeof(*io));  in omap2_clk_legacy_provider_init()
369 	io->mem = mem;  in omap2_clk_legacy_provider_init()
371 	clk_memmaps[index] = io;  in omap2_clk_legacy_provider_init()
375  * ti_dt_clk_init_retry_clks - init clocks from the retry list
390 			pr_debug("retry-init: %pOFn\n", retry->node);  in ti_dt_clk_init_retry_clks()
391 			retry->func(retry->user, retry->node);  in ti_dt_clk_init_retry_clks()
392 			list_del(&retry->link);  in ti_dt_clk_init_retry_clks()
395 		retries--;  in ti_dt_clk_init_retry_clks()
400 	{ .compatible = "fixed-clock" },
401 	{ .compatible = "fixed-factor-clock" },
406  * ti_dt_clk_name - init clock name from first output name or node name
409  * Use the first clock-output-name for the clock name if found. Fall back
416 	if (!of_property_read_string_index(np, "clock-output-names", 0,  in ti_dt_clk_name()
420 	return np->name;  in ti_dt_clk_name()
424  * ti_clk_add_aliases - setup clock aliases
444  * ti_clk_setup_features - setup clock features flags
456  * ti_clk_get_features - get clock driver features flags
467  * omap2_clk_enable_init_clocks - prepare & enable a list of clocks
491  * ti_clk_add_alias - add a clock alias for a TI clock
511 		return -ENOMEM;  in ti_clk_add_alias()
513 	cl->con_id = con;  in ti_clk_add_alias()
514 	cl->clk = clk;  in ti_clk_add_alias()
522  * of_ti_clk_register - register a TI clock to the common clock framework
541 	clk = hw->clk;  in of_ti_clk_register()
552  * of_ti_clk_register_omap_hw - register a clk_hw_omap to the clock framework
574 	list_add(&oclk->node, &clk_hw_omap_clocks);  in of_ti_clk_register_omap_hw()
580  * omap2_clk_for_each - call function for each registered clk_hw_omap
585  * failure.  If @fn returns non-zero, the iteration across clocks
586  * will stop and the non-zero return value will be passed to the
604  * omap2_clk_is_hw_omap - check if the provided clk_hw is OMAP clock
615 		if (&oclk->hw == hw)  in omap2_clk_is_hw_omap()