2  *  i2c-versatile.c
13 #include <linux/i2c.h>
14 #include <linux/i2c-algo-bit.h>
34 	struct i2c_versatile *i2c = data;  in i2c_versatile_setsda()  local
36 	writel(SDA, i2c->base + (state ? I2C_CONTROLS : I2C_CONTROLC));  in i2c_versatile_setsda()
41 	struct i2c_versatile *i2c = data;  in i2c_versatile_setscl()  local
43 	writel(SCL, i2c->base + (state ? I2C_CONTROLS : I2C_CONTROLC));  in i2c_versatile_setscl()
48 	struct i2c_versatile *i2c = data;  in i2c_versatile_getsda()  local
49 	return !!(readl(i2c->base + I2C_CONTROL) & SDA);  in i2c_versatile_getsda()
54 	struct i2c_versatile *i2c = data;  in i2c_versatile_getscl()  local
55 	return !!(readl(i2c->base + I2C_CONTROL) & SCL);  in i2c_versatile_getscl()
69 	struct i2c_versatile *i2c;  in i2c_versatile_probe()  local
79 	if (!request_mem_region(r->start, resource_size(r), "versatile-i2c")) {  in i2c_versatile_probe()
84 	i2c = kzalloc(sizeof(struct i2c_versatile), GFP_KERNEL);  in i2c_versatile_probe()
85 	if (!i2c) {  in i2c_versatile_probe()
90 	i2c->base = ioremap(r->start, resource_size(r));  in i2c_versatile_probe()
91 	if (!i2c->base) {  in i2c_versatile_probe()
96 	writel(SCL | SDA, i2c->base + I2C_CONTROLS);  in i2c_versatile_probe()
98 	i2c->adap.owner = THIS_MODULE;  in i2c_versatile_probe()
99 	strlcpy(i2c->adap.name, "Versatile I2C adapter", sizeof(i2c->adap.name));  in i2c_versatile_probe()
100 	i2c->adap.algo_data = &i2c->algo;  in i2c_versatile_probe()
101 	i2c->adap.dev.parent = &dev->dev;  in i2c_versatile_probe()
102 	i2c->algo = i2c_versatile_algo;  in i2c_versatile_probe()
103 	i2c->algo.data = i2c;  in i2c_versatile_probe()
107 		i2c->adap.nr = dev->id;  in i2c_versatile_probe()
108 		ret = i2c_bit_add_numbered_bus(&i2c->adap);  in i2c_versatile_probe()
111 		ret = i2c_bit_add_bus(&i2c->adap);  in i2c_versatile_probe()
113 		platform_set_drvdata(dev, i2c);  in i2c_versatile_probe()
117 	iounmap(i2c->base);  in i2c_versatile_probe()
119 	kfree(i2c);  in i2c_versatile_probe()
128 	struct i2c_versatile *i2c = platform_get_drvdata(dev);  in i2c_versatile_remove()  local
132 	i2c_del_adapter(&i2c->adap);  in i2c_versatile_remove()
140 		.name	= "versatile-i2c",
158 MODULE_DESCRIPTION("ARM Versatile I2C bus driver");
160 MODULE_ALIAS("platform:versatile-i2c");