2  * Allwinner SoCs SRAM Controller Driver
6  * Author: Maxime Ripard <maxime.ripard@free-electrons.com>
62 	.data	= SUNXI_SRAM_DATA("A3-A4", 0x4, 0x4, 2,
76 				  SUNXI_SRAM_MAP(1, 1, "usb-otg")),
87 		.compatible	= "allwinner,sun4i-a10-sram-a3-a4",
91 		.compatible	= "allwinner,sun4i-a10-sram-c1",
95 		.compatible	= "allwinner,sun4i-a10-sram-d",
99 		.compatible	= "allwinner,sun50i-a64-sram-c",
119 	seq_puts(s, "Allwinner sunXi SRAM\n");  in sunxi_sram_show()
120 	seq_puts(s, "--------------------\n\n");  in sunxi_sram_show()
122 	for_each_child_of_node(sram_dev->of_node, sram_node) {  in sunxi_sram_show()
125 		seq_printf(s, "sram@%08x\n",  in sunxi_sram_show()
132 			sram_data = match->data;  in sunxi_sram_show()
139 				   sram_data->name);  in sunxi_sram_show()
141 			val = readl(base + sram_data->reg);  in sunxi_sram_show()
142 			val >>= sram_data->offset;  in sunxi_sram_show()
143 			val &= GENMASK(sram_data->width - 1, 0);  in sunxi_sram_show()
145 			for (func = sram_data->func; func->func; func++) {  in sunxi_sram_show()
146 				seq_printf(s, "\t\t%s%c\n", func->func,  in sunxi_sram_show()
147 					   func->reg_val == val ?  in sunxi_sram_show()
175 	ret = of_parse_phandle_with_fixed_args(node, "allwinner,sram", 1, 0,  in sunxi_sram_of_parse()
181 		ret = -EBUSY;  in sunxi_sram_of_parse()
189 		ret = -EINVAL;  in sunxi_sram_of_parse()
193 	data = match->data;  in sunxi_sram_of_parse()
195 		ret = -EINVAL;  in sunxi_sram_of_parse()
199 	for (func = data->func; func->func; func++) {  in sunxi_sram_of_parse()
200 		if (val == func->val) {  in sunxi_sram_of_parse()
202 				*reg_value = func->reg_val;  in sunxi_sram_of_parse()
208 	if (!func->func) {  in sunxi_sram_of_parse()
209 		ret = -EINVAL;  in sunxi_sram_of_parse()
214 	return match->data;  in sunxi_sram_of_parse()
232 		return -EPROBE_DEFER;  in sunxi_sram_claim()
234 	if (!dev || !dev->of_node)  in sunxi_sram_claim()
235 		return -EINVAL;  in sunxi_sram_claim()
237 	sram_data = sunxi_sram_of_parse(dev->of_node, &device);  in sunxi_sram_claim()
245 	if (sram_desc->claimed) {  in sunxi_sram_claim()
247 		return -EBUSY;  in sunxi_sram_claim()
250 	mask = GENMASK(sram_data->offset + sram_data->width - 1,  in sunxi_sram_claim()
251 		       sram_data->offset);  in sunxi_sram_claim()
252 	val = readl(base + sram_data->reg);  in sunxi_sram_claim()
254 	writel(val | ((device << sram_data->offset) & mask),  in sunxi_sram_claim()
255 	       base + sram_data->reg);  in sunxi_sram_claim()
268 	if (!dev || !dev->of_node)  in sunxi_sram_release()
269 		return -EINVAL;  in sunxi_sram_release()
271 	sram_data = sunxi_sram_of_parse(dev->of_node, NULL);  in sunxi_sram_release()
273 		return -EINVAL;  in sunxi_sram_release()
278 	sram_desc->claimed = false;  in sunxi_sram_release()
328 	sram_dev = &pdev->dev;  in sunxi_sram_probe()
330 	variant = of_device_get_match_data(&pdev->dev);  in sunxi_sram_probe()
332 		return -EINVAL;  in sunxi_sram_probe()
335 	base = devm_ioremap_resource(&pdev->dev, res);  in sunxi_sram_probe()
339 	of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);  in sunxi_sram_probe()
341 	d = debugfs_create_file("sram", S_IRUGO, NULL, NULL,  in sunxi_sram_probe()
344 		return -ENOMEM;  in sunxi_sram_probe()
346 	if (variant->has_emac_clock) {  in sunxi_sram_probe()
347 		emac_clock = devm_regmap_init_mmio(&pdev->dev, base,  in sunxi_sram_probe()
359 		.compatible = "allwinner,sun4i-a10-sram-controller",
363 		.compatible = "allwinner,sun4i-a10-system-control",
367 		.compatible = "allwinner,sun5i-a13-system-control",
371 		.compatible = "allwinner,sun8i-a23-system-control",
375 		.compatible = "allwinner,sun8i-h3-system-control",
379 		.compatible = "allwinner,sun50i-a64-sram-controller",
383 		.compatible = "allwinner,sun50i-a64-system-control",
387 		.compatible = "allwinner,sun50i-h5-system-control",
396 		.name		= "sunxi-sram",
403 MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
404 MODULE_DESCRIPTION("Allwinner sunXi SRAM Controller Driver");