30 static int regcache_hw_init(struct regmap *map)  in regcache_hw_init()  argument
38 	if (!map->num_reg_defaults_raw)  in regcache_hw_init()
42 	for (count = 0, i = 0; i < map->num_reg_defaults_raw; i++)  in regcache_hw_init()
43 		if (regmap_readable(map, i * map->reg_stride) &&  in regcache_hw_init()
44 		    !regmap_volatile(map, i * map->reg_stride))  in regcache_hw_init()
49 		map->cache_bypass = true;  in regcache_hw_init()
53 	map->num_reg_defaults = count;  in regcache_hw_init()
54 	map->reg_defaults = kmalloc_array(count, sizeof(struct reg_default),  in regcache_hw_init()
56 	if (!map->reg_defaults)  in regcache_hw_init()
59 	if (!map->reg_defaults_raw) {  in regcache_hw_init()
60 		bool cache_bypass = map->cache_bypass;  in regcache_hw_init()
61 		dev_warn(map->dev, "No cache defaults, reading back from HW\n");  in regcache_hw_init()
64 		map->cache_bypass = true;  in regcache_hw_init()
65 		tmp_buf = kmalloc(map->cache_size_raw, GFP_KERNEL);  in regcache_hw_init()
70 		ret = regmap_raw_read(map, 0, tmp_buf,  in regcache_hw_init()
71 				      map->cache_size_raw);  in regcache_hw_init()
72 		map->cache_bypass = cache_bypass;  in regcache_hw_init()
74 			map->reg_defaults_raw = tmp_buf;  in regcache_hw_init()
75 			map->cache_free = 1;  in regcache_hw_init()
82 	for (i = 0, j = 0; i < map->num_reg_defaults_raw; i++) {  in regcache_hw_init()
83 		reg = i * map->reg_stride;  in regcache_hw_init()
85 		if (!regmap_readable(map, reg))  in regcache_hw_init()
88 		if (regmap_volatile(map, reg))  in regcache_hw_init()
91 		if (map->reg_defaults_raw) {  in regcache_hw_init()
92 			val = regcache_get_val(map, map->reg_defaults_raw, i);  in regcache_hw_init()
94 			bool cache_bypass = map->cache_bypass;  in regcache_hw_init()
96 			map->cache_bypass = true;  in regcache_hw_init()
97 			ret = regmap_read(map, reg, &val);  in regcache_hw_init()
98 			map->cache_bypass = cache_bypass;  in regcache_hw_init()
100 				dev_err(map->dev, "Failed to read %d: %d\n",  in regcache_hw_init()
106 		map->reg_defaults[j].reg = reg;  in regcache_hw_init()
107 		map->reg_defaults[j].def = val;  in regcache_hw_init()
114 	kfree(map->reg_defaults);  in regcache_hw_init()
119 int regcache_init(struct regmap *map, const struct regmap_config *config)  in regcache_init()  argument
125 	if (map->cache_type == REGCACHE_NONE) {  in regcache_init()
127 			dev_warn(map->dev,  in regcache_init()
130 		map->cache_bypass = true;  in regcache_init()
135 		dev_err(map->dev,  in regcache_init()
141 		if (config->reg_defaults[i].reg % map->reg_stride)  in regcache_init()
145 		if (cache_types[i]->type == map->cache_type)  in regcache_init()
149 		dev_err(map->dev, "Could not match compress type: %d\n",  in regcache_init()
150 			map->cache_type);  in regcache_init()
154 	map->num_reg_defaults = config->num_reg_defaults;  in regcache_init()
155 	map->num_reg_defaults_raw = config->num_reg_defaults_raw;  in regcache_init()
156 	map->reg_defaults_raw = config->reg_defaults_raw;  in regcache_init()
157 	map->cache_word_size = DIV_ROUND_UP(config->val_bits, 8);  in regcache_init()
158 	map->cache_size_raw = map->cache_word_size * config->num_reg_defaults_raw;  in regcache_init()
160 	map->cache = NULL;  in regcache_init()
161 	map->cache_ops = cache_types[i];  in regcache_init()
163 	if (!map->cache_ops->read ||  in regcache_init()
164 	    !map->cache_ops->write ||  in regcache_init()
165 	    !map->cache_ops->name)  in regcache_init()
173 		tmp_buf = kmemdup(config->reg_defaults, map->num_reg_defaults *  in regcache_init()
177 		map->reg_defaults = tmp_buf;  in regcache_init()
178 	} else if (map->num_reg_defaults_raw) {  in regcache_init()
183 		ret = regcache_hw_init(map);  in regcache_init()
186 		if (map->cache_bypass)  in regcache_init()
190 	if (!map->max_register)  in regcache_init()
191 		map->max_register = map->num_reg_defaults_raw;  in regcache_init()
193 	if (map->cache_ops->init) {  in regcache_init()
194 		dev_dbg(map->dev, "Initializing %s cache\n",  in regcache_init()
195 			map->cache_ops->name);  in regcache_init()
196 		ret = map->cache_ops->init(map);  in regcache_init()
203 	kfree(map->reg_defaults);  in regcache_init()
204 	if (map->cache_free)  in regcache_init()
205 		kfree(map->reg_defaults_raw);  in regcache_init()
210 void regcache_exit(struct regmap *map)  in regcache_exit()  argument
212 	if (map->cache_type == REGCACHE_NONE)  in regcache_exit()
215 	BUG_ON(!map->cache_ops);  in regcache_exit()
217 	kfree(map->reg_defaults);  in regcache_exit()
218 	if (map->cache_free)  in regcache_exit()
219 		kfree(map->reg_defaults_raw);  in regcache_exit()
221 	if (map->cache_ops->exit) {  in regcache_exit()
222 		dev_dbg(map->dev, "Destroying %s cache\n",  in regcache_exit()
223 			map->cache_ops->name);  in regcache_exit()
224 		map->cache_ops->exit(map);  in regcache_exit()
237 int regcache_read(struct regmap *map,  in regcache_read()  argument
242 	if (map->cache_type == REGCACHE_NONE)  in regcache_read()
245 	BUG_ON(!map->cache_ops);  in regcache_read()
247 	if (!regmap_volatile(map, reg)) {  in regcache_read()
248 		ret = map->cache_ops->read(map, reg, value);  in regcache_read()
251 			trace_regmap_reg_read_cache(map, reg, *value);  in regcache_read()
268 int regcache_write(struct regmap *map,  in regcache_write()  argument
271 	if (map->cache_type == REGCACHE_NONE)  in regcache_write()
274 	BUG_ON(!map->cache_ops);  in regcache_write()
276 	if (!regmap_volatile(map, reg))  in regcache_write()
277 		return map->cache_ops->write(map, reg, value);  in regcache_write()
282 static bool regcache_reg_needs_sync(struct regmap *map, unsigned int reg,  in regcache_reg_needs_sync()  argument
288 	if (!map->no_sync_defaults)  in regcache_reg_needs_sync()
292 	ret = regcache_lookup_reg(map, reg);  in regcache_reg_needs_sync()
293 	if (ret >= 0 && val == map->reg_defaults[ret].def)  in regcache_reg_needs_sync()
298 static int regcache_default_sync(struct regmap *map, unsigned int min,  in regcache_default_sync()  argument
303 	for (reg = min; reg <= max; reg += map->reg_stride) {  in regcache_default_sync()
307 		if (regmap_volatile(map, reg) ||  in regcache_default_sync()
308 		    !regmap_writeable(map, reg))  in regcache_default_sync()
311 		ret = regcache_read(map, reg, &val);  in regcache_default_sync()
315 		if (!regcache_reg_needs_sync(map, reg, val))  in regcache_default_sync()
318 		map->cache_bypass = true;  in regcache_default_sync()
319 		ret = _regmap_write(map, reg, val);  in regcache_default_sync()
320 		map->cache_bypass = false;  in regcache_default_sync()
322 			dev_err(map->dev, "Unable to sync register %#x. %d\n",  in regcache_default_sync()
326 		dev_dbg(map->dev, "Synced register %#x, value %#x\n", reg, val);  in regcache_default_sync()
343 int regcache_sync(struct regmap *map)  in regcache_sync()  argument
350 	BUG_ON(!map->cache_ops);  in regcache_sync()
352 	map->lock(map->lock_arg);  in regcache_sync()
354 	bypass = map->cache_bypass;  in regcache_sync()
355 	dev_dbg(map->dev, "Syncing %s cache\n",  in regcache_sync()
356 		map->cache_ops->name);  in regcache_sync()
357 	name = map->cache_ops->name;  in regcache_sync()
358 	trace_regcache_sync(map, name, "start");  in regcache_sync()
360 	if (!map->cache_dirty)  in regcache_sync()
363 	map->async = true;  in regcache_sync()
366 	map->cache_bypass = true;  in regcache_sync()
367 	for (i = 0; i < map->patch_regs; i++) {  in regcache_sync()
368 		ret = _regmap_write(map, map->patch[i].reg, map->patch[i].def);  in regcache_sync()
370 			dev_err(map->dev, "Failed to write %x = %x: %d\n",  in regcache_sync()
371 				map->patch[i].reg, map->patch[i].def, ret);  in regcache_sync()
375 	map->cache_bypass = false;  in regcache_sync()
377 	if (map->cache_ops->sync)  in regcache_sync()
378 		ret = map->cache_ops->sync(map, 0, map->max_register);  in regcache_sync()
380 		ret = regcache_default_sync(map, 0, map->max_register);  in regcache_sync()
383 		map->cache_dirty = false;  in regcache_sync()
387 	map->async = false;  in regcache_sync()
388 	map->cache_bypass = bypass;  in regcache_sync()
389 	map->no_sync_defaults = false;  in regcache_sync()
390 	map->unlock(map->lock_arg);  in regcache_sync()
392 	regmap_async_complete(map);  in regcache_sync()
394 	trace_regcache_sync(map, name, "stop");  in regcache_sync()
412 int regcache_sync_region(struct regmap *map, unsigned int min,  in regcache_sync_region()  argument
419 	BUG_ON(!map->cache_ops);  in regcache_sync_region()
421 	map->lock(map->lock_arg);  in regcache_sync_region()
424 	bypass = map->cache_bypass;  in regcache_sync_region()
426 	name = map->cache_ops->name;  in regcache_sync_region()
427 	dev_dbg(map->dev, "Syncing %s cache from %d-%d\n", name, min, max);  in regcache_sync_region()
429 	trace_regcache_sync(map, name, "start region");  in regcache_sync_region()
431 	if (!map->cache_dirty)  in regcache_sync_region()
434 	map->async = true;  in regcache_sync_region()
436 	if (map->cache_ops->sync)  in regcache_sync_region()
437 		ret = map->cache_ops->sync(map, min, max);  in regcache_sync_region()
439 		ret = regcache_default_sync(map, min, max);  in regcache_sync_region()
443 	map->cache_bypass = bypass;  in regcache_sync_region()
444 	map->async = false;  in regcache_sync_region()
445 	map->no_sync_defaults = false;  in regcache_sync_region()
446 	map->unlock(map->lock_arg);  in regcache_sync_region()
448 	regmap_async_complete(map);  in regcache_sync_region()
450 	trace_regcache_sync(map, name, "stop region");  in regcache_sync_region()
467 int regcache_drop_region(struct regmap *map, unsigned int min,  in regcache_drop_region()  argument
472 	if (!map->cache_ops || !map->cache_ops->drop)  in regcache_drop_region()
475 	map->lock(map->lock_arg);  in regcache_drop_region()
477 	trace_regcache_drop_region(map, min, max);  in regcache_drop_region()
479 	ret = map->cache_ops->drop(map, min, max);  in regcache_drop_region()
481 	map->unlock(map->lock_arg);  in regcache_drop_region()
499 void regcache_cache_only(struct regmap *map, bool enable)  in regcache_cache_only()  argument
501 	map->lock(map->lock_arg);  in regcache_cache_only()
502 	WARN_ON(map->cache_bypass && enable);  in regcache_cache_only()
503 	map->cache_only = enable;  in regcache_cache_only()
504 	trace_regmap_cache_only(map, enable);  in regcache_cache_only()
505 	map->unlock(map->lock_arg);  in regcache_cache_only()
522 void regcache_mark_dirty(struct regmap *map)  in regcache_mark_dirty()  argument
524 	map->lock(map->lock_arg);  in regcache_mark_dirty()
525 	map->cache_dirty = true;  in regcache_mark_dirty()
526 	map->no_sync_defaults = true;  in regcache_mark_dirty()
527 	map->unlock(map->lock_arg);  in regcache_mark_dirty()
542 void regcache_cache_bypass(struct regmap *map, bool enable)  in regcache_cache_bypass()  argument
544 	map->lock(map->lock_arg);  in regcache_cache_bypass()
545 	WARN_ON(map->cache_only && enable);  in regcache_cache_bypass()
546 	map->cache_bypass = enable;  in regcache_cache_bypass()
547 	trace_regmap_cache_bypass(map, enable);  in regcache_cache_bypass()
548 	map->unlock(map->lock_arg);  in regcache_cache_bypass()
552 bool regcache_set_val(struct regmap *map, void *base, unsigned int idx,  in regcache_set_val()  argument
555 	if (regcache_get_val(map, base, idx) == val)  in regcache_set_val()
559 	if (map->format.format_val) {  in regcache_set_val()
560 		map->format.format_val(base + (map->cache_word_size * idx),  in regcache_set_val()
565 	switch (map->cache_word_size) {  in regcache_set_val()
598 unsigned int regcache_get_val(struct regmap *map, const void *base,  in regcache_get_val()  argument
605 	if (map->format.parse_val)  in regcache_get_val()
606 		return map->format.parse_val(regcache_get_val_addr(map, base,  in regcache_get_val()
609 	switch (map->cache_word_size) {  in regcache_get_val()
647 int regcache_lookup_reg(struct regmap *map, unsigned int reg)  in regcache_lookup_reg()  argument
655 	r = bsearch(&key, map->reg_defaults, map->num_reg_defaults,  in regcache_lookup_reg()
659 		return r - map->reg_defaults;  in regcache_lookup_reg()
672 static int regcache_sync_block_single(struct regmap *map, void *block,  in regcache_sync_block_single()  argument
681 		regtmp = block_base + (i * map->reg_stride);  in regcache_sync_block_single()
684 		    !regmap_writeable(map, regtmp))  in regcache_sync_block_single()
687 		val = regcache_get_val(map, block, i);  in regcache_sync_block_single()
688 		if (!regcache_reg_needs_sync(map, regtmp, val))  in regcache_sync_block_single()
691 		map->cache_bypass = true;  in regcache_sync_block_single()
693 		ret = _regmap_write(map, regtmp, val);  in regcache_sync_block_single()
695 		map->cache_bypass = false;  in regcache_sync_block_single()
697 			dev_err(map->dev, "Unable to sync register %#x. %d\n",  in regcache_sync_block_single()
701 		dev_dbg(map->dev, "Synced register %#x, value %#x\n",  in regcache_sync_block_single()
708 static int regcache_sync_block_raw_flush(struct regmap *map, const void **data,  in regcache_sync_block_raw_flush()  argument
711 	size_t val_bytes = map->format.val_bytes;  in regcache_sync_block_raw_flush()
717 	count = (cur - base) / map->reg_stride;  in regcache_sync_block_raw_flush()
719 	dev_dbg(map->dev, "Writing %zu bytes for %d registers from 0x%x-0x%x\n",  in regcache_sync_block_raw_flush()
720 		count * val_bytes, count, base, cur - map->reg_stride);  in regcache_sync_block_raw_flush()
722 	map->cache_bypass = true;  in regcache_sync_block_raw_flush()
724 	ret = _regmap_raw_write(map, base, *data, count * val_bytes);  in regcache_sync_block_raw_flush()
726 		dev_err(map->dev, "Unable to sync registers %#x-%#x. %d\n",  in regcache_sync_block_raw_flush()
727 			base, cur - map->reg_stride, ret);  in regcache_sync_block_raw_flush()
729 	map->cache_bypass = false;  in regcache_sync_block_raw_flush()
736 static int regcache_sync_block_raw(struct regmap *map, void *block,  in regcache_sync_block_raw()  argument
748 		regtmp = block_base + (i * map->reg_stride);  in regcache_sync_block_raw()
751 		    !regmap_writeable(map, regtmp)) {  in regcache_sync_block_raw()
752 			ret = regcache_sync_block_raw_flush(map, &data,  in regcache_sync_block_raw()
759 		val = regcache_get_val(map, block, i);  in regcache_sync_block_raw()
760 		if (!regcache_reg_needs_sync(map, regtmp, val)) {  in regcache_sync_block_raw()
761 			ret = regcache_sync_block_raw_flush(map, &data,  in regcache_sync_block_raw()
769 			data = regcache_get_val_addr(map, block, i);  in regcache_sync_block_raw()
774 	return regcache_sync_block_raw_flush(map, &data, base, regtmp +  in regcache_sync_block_raw()
775 			map->reg_stride);  in regcache_sync_block_raw()
778 int regcache_sync_block(struct regmap *map, void *block,  in regcache_sync_block()  argument
783 	if (regmap_can_raw_write(map) && !map->use_single_write)  in regcache_sync_block()
784 		return regcache_sync_block_raw(map, block, cache_present,  in regcache_sync_block()
787 		return regcache_sync_block_single(map, block, cache_present,  in regcache_sync_block()