2  * Allwinner SoCs SRAM Controller Driver
6  * Author: Maxime Ripard <maxime.ripard@free-electrons.com>
61 	.data	= SUNXI_SRAM_DATA("A3-A4", 0x4, 0x4, 2,
75 				  SUNXI_SRAM_MAP(1, 1, "usb-otg")),
86 		.compatible	= "allwinner,sun4i-a10-sram-a3-a4",
90 		.compatible	= "allwinner,sun4i-a10-sram-c1",
94 		.compatible	= "allwinner,sun4i-a10-sram-d",
98 		.compatible	= "allwinner,sun50i-a64-sram-c",
118 	seq_puts(s, "--------------------\n\n");  in sunxi_sram_show()
120 	for_each_child_of_node(sram_dev->of_node, sram_node) {  in sunxi_sram_show()
121 		if (!of_device_is_compatible(sram_node, "mmio-sram"))  in sunxi_sram_show()
133 			sram_data = match->data;  in sunxi_sram_show()
140 				   sram_data->name);  in sunxi_sram_show()
142 			val = readl(base + sram_data->reg);  in sunxi_sram_show()
143 			val >>= sram_data->offset;  in sunxi_sram_show()
144 			val &= GENMASK(sram_data->width - 1, 0);  in sunxi_sram_show()
146 			for (func = sram_data->func; func->func; func++) {  in sunxi_sram_show()
147 				seq_printf(s, "\t\t%s%c\n", func->func,  in sunxi_sram_show()
148 					   func->reg_val == val ?  in sunxi_sram_show()
182 		ret = -EBUSY;  in sunxi_sram_of_parse()
190 		ret = -EINVAL;  in sunxi_sram_of_parse()
194 	data = match->data;  in sunxi_sram_of_parse()
196 		ret = -EINVAL;  in sunxi_sram_of_parse()
200 	for (func = data->func; func->func; func++) {  in sunxi_sram_of_parse()
201 		if (val == func->val) {  in sunxi_sram_of_parse()
203 				*reg_value = func->reg_val;  in sunxi_sram_of_parse()
209 	if (!func->func) {  in sunxi_sram_of_parse()
210 		ret = -EINVAL;  in sunxi_sram_of_parse()
215 	return match->data;  in sunxi_sram_of_parse()
233 		return -EPROBE_DEFER;  in sunxi_sram_claim()
235 	if (!dev || !dev->of_node)  in sunxi_sram_claim()
236 		return -EINVAL;  in sunxi_sram_claim()
238 	sram_data = sunxi_sram_of_parse(dev->of_node, &device);  in sunxi_sram_claim()
246 	if (sram_desc->claimed) {  in sunxi_sram_claim()
248 		return -EBUSY;  in sunxi_sram_claim()
251 	mask = GENMASK(sram_data->offset + sram_data->width - 1,  in sunxi_sram_claim()
252 		       sram_data->offset);  in sunxi_sram_claim()
253 	val = readl(base + sram_data->reg);  in sunxi_sram_claim()
255 	writel(val | ((device << sram_data->offset) & mask),  in sunxi_sram_claim()
256 	       base + sram_data->reg);  in sunxi_sram_claim()
258 	sram_desc->claimed = true;  in sunxi_sram_claim()
270 	if (!dev || !dev->of_node)  in sunxi_sram_release()
273 	sram_data = sunxi_sram_of_parse(dev->of_node, NULL);  in sunxi_sram_release()
280 	sram_desc->claimed = false;  in sunxi_sram_release()
322 	if (reg == SUNXI_SRAM_THS_OFFSET_REG && variant->has_ths_offset)  in sunxi_sram_regmap_accessible_reg()
325 	    reg <  SUNXI_SRAM_EMAC_CLOCK_REG + variant->num_emac_clocks * 4)  in sunxi_sram_regmap_accessible_reg()
327 	if (reg == SUNXI_SYS_LDO_CTRL_REG && variant->has_ldo_ctrl)  in sunxi_sram_regmap_accessible_reg()
364 	struct device *dev = &pdev->dev;  in sunxi_sram_probe()
367 	sram_dev = &pdev->dev;  in sunxi_sram_probe()
369 	variant = of_device_get_match_data(&pdev->dev);  in sunxi_sram_probe()
371 		return -EINVAL;  in sunxi_sram_probe()
379 	if (variant->num_emac_clocks || variant->has_ldo_ctrl) {  in sunxi_sram_probe()
385 	of_platform_populate(dev->of_node, NULL, NULL, dev);  in sunxi_sram_probe()
394 		.compatible = "allwinner,sun4i-a10-sram-controller",
398 		.compatible = "allwinner,sun4i-a10-system-control",
402 		.compatible = "allwinner,sun5i-a13-system-control",
406 		.compatible = "allwinner,sun8i-a23-system-control",
410 		.compatible = "allwinner,sun8i-h3-system-control",
414 		.compatible = "allwinner,sun20i-d1-system-control",
418 		.compatible = "allwinner,sun50i-a64-sram-controller",
422 		.compatible = "allwinner,sun50i-a64-system-control",
426 		.compatible = "allwinner,sun50i-h5-system-control",
430 		.compatible = "allwinner,sun50i-h616-system-control",
439 		.name		= "sunxi-sram",
445 MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
446 MODULE_DESCRIPTION("Allwinner sunXi SRAM Controller Driver");