8  * TI AEMIF driver, Copyright (C) 2010 - 2013 Texas Instruments Inc.
16 #include <linux/clk.h>
56 	struct clk *clk;  member
64 	int cycles;  in pl172_timing_prop()  local
68 		cycles = DIV_ROUND_UP(val * pl172->rate, NSEC_PER_MSEC) - start;  in pl172_timing_prop()
69 		if (cycles < 0) {  in pl172_timing_prop()
70 			cycles = 0;  in pl172_timing_prop()
71 		} else if (cycles > max) {  in pl172_timing_prop()
72 			dev_err(&adev->dev, "%s timing too tight\n", name);  in pl172_timing_prop()
73 			return -EINVAL;  in pl172_timing_prop()
76 		writel(cycles, pl172->base + reg_offset);  in pl172_timing_prop()
79 	dev_dbg(&adev->dev, "%s: %u cycle(s)\n", name, start +  in pl172_timing_prop()
80 				readl(pl172->base + reg_offset));  in pl172_timing_prop()
93 	if (!of_property_read_u32(np, "mpmc,memory-width", &cfg)) {  in pl172_setup_static()
101 			dev_err(&adev->dev, "invalid memory width cs%u\n", cs);  in pl172_setup_static()
102 			return -EINVAL;  in pl172_setup_static()
105 		dev_err(&adev->dev, "memory-width property required\n");  in pl172_setup_static()
106 		return -EINVAL;  in pl172_setup_static()
109 	if (of_property_read_bool(np, "mpmc,async-page-mode"))  in pl172_setup_static()
112 	if (of_property_read_bool(np, "mpmc,cs-active-high"))  in pl172_setup_static()
115 	if (of_property_read_bool(np, "mpmc,byte-lane-low"))  in pl172_setup_static()
118 	if (of_property_read_bool(np, "mpmc,extended-wait"))  in pl172_setup_static()
122 	    of_property_read_bool(np, "mpmc,buffer-enable"))  in pl172_setup_static()
125 	if (of_property_read_bool(np, "mpmc,write-protect"))  in pl172_setup_static()
128 	writel(cfg, pl172->base + MPMC_STATIC_CFG(cs));  in pl172_setup_static()
129 	dev_dbg(&adev->dev, "mpmc static config cs%u: 0x%08x\n", cs, cfg);  in pl172_setup_static()
132 	ret = pl172_timing_prop(adev, np, "mpmc,write-enable-delay",  in pl172_setup_static()
138 	ret = pl172_timing_prop(adev, np, "mpmc,output-enable-delay",  in pl172_setup_static()
144 	ret = pl172_timing_prop(adev, np, "mpmc,read-access-delay",  in pl172_setup_static()
150 	ret = pl172_timing_prop(adev, np, "mpmc,page-mode-read-delay",  in pl172_setup_static()
156 	ret = pl172_timing_prop(adev, np, "mpmc,write-access-delay",  in pl172_setup_static()
162 	ret = pl172_timing_prop(adev, np, "mpmc,turn-round-delay",  in pl172_setup_static()
170 	dev_err(&adev->dev, "failed to configure cs%u\n", cs);  in pl172_setup_static()
181 			dev_err(&adev->dev, "cs%u invalid\n", cs);  in pl172_parse_cs_config()
182 			return -EINVAL;  in pl172_parse_cs_config()
188 	dev_err(&adev->dev, "cs property required\n");  in pl172_parse_cs_config()
190 	return -EINVAL;  in pl172_parse_cs_config()
199 	struct device_node *child_np, *np = adev->dev.of_node;  in pl172_probe()
200 	struct device *dev = &adev->dev;  in pl172_probe()
220 		return -ENOMEM;  in pl172_probe()
222 	pl172->clk = devm_clk_get(dev, "mpmcclk");  in pl172_probe()
223 	if (IS_ERR(pl172->clk)) {  in pl172_probe()
225 		return PTR_ERR(pl172->clk);  in pl172_probe()
228 	ret = clk_prepare_enable(pl172->clk);  in pl172_probe()
234 	pl172->rate = clk_get_rate(pl172->clk) / MSEC_PER_SEC;  in pl172_probe()
235 	if (!pl172->rate) {  in pl172_probe()
237 		ret = -EINVAL;  in pl172_probe()
247 	pl172->base = devm_ioremap(dev, adev->res.start,  in pl172_probe()
248 				   resource_size(&adev->res));  in pl172_probe()
249 	if (!pl172->base) {  in pl172_probe()
251 		ret = -ENOMEM;  in pl172_probe()
275 	clk_disable_unprepare(pl172->clk);  in pl172_probe()
283 	clk_disable_unprepare(pl172->clk);  in pl172_remove()
311 		.name	= "memory-pl172",