106 static __inline__ u8 matrox_w1_read_reg(struct matrox_device *dev, u8 reg)  in matrox_w1_read_reg()  argument
110 	writeb(reg, dev->port_index);  in matrox_w1_read_reg()
111 	ret = readb(dev->port_data);  in matrox_w1_read_reg()
117 static __inline__ void matrox_w1_write_reg(struct matrox_device *dev, u8 reg, u8 val)  in matrox_w1_write_reg()  argument
119 	writeb(reg, dev->port_index);  in matrox_w1_write_reg()
120 	writeb(val, dev->port_data);  in matrox_w1_write_reg()
127 	struct matrox_device *dev = data;  in matrox_w1_write_ddc_bit()  local
132 		bit = dev->data_mask;  in matrox_w1_write_ddc_bit()
134 	ret = matrox_w1_read_reg(dev, MATROX_GET_CONTROL);  in matrox_w1_write_ddc_bit()
135 	matrox_w1_write_reg(dev, MATROX_GET_CONTROL, ((ret & ~dev->data_mask) | bit));  in matrox_w1_write_ddc_bit()
136 	matrox_w1_write_reg(dev, MATROX_GET_DATA, 0x00);  in matrox_w1_write_ddc_bit()
142 	struct matrox_device *dev = data;  in matrox_w1_read_ddc_bit()  local
144 	ret = matrox_w1_read_reg(dev, MATROX_GET_DATA);  in matrox_w1_read_ddc_bit()
149 static void matrox_w1_hw_init(struct matrox_device *dev)  in matrox_w1_hw_init()  argument
151 	matrox_w1_write_reg(dev, MATROX_GET_DATA, 0xFF);  in matrox_w1_hw_init()
152 	matrox_w1_write_reg(dev, MATROX_GET_CONTROL, 0x00);  in matrox_w1_hw_init()
157 	struct matrox_device *dev;  in matrox_w1_probe()  local
166 	dev = kzalloc(sizeof(struct matrox_device) +  in matrox_w1_probe()
168 	if (!dev) {  in matrox_w1_probe()
169 		dev_err(&pdev->dev,  in matrox_w1_probe()
176 	dev->bus_master = (struct w1_bus_master *)(dev + 1);  in matrox_w1_probe()
182 	dev->phys_addr = pci_resource_start(pdev, 1);  in matrox_w1_probe()
184 	dev->virt_addr = ioremap_nocache(dev->phys_addr, 16384);  in matrox_w1_probe()
185 	if (!dev->virt_addr) {  in matrox_w1_probe()
186 		dev_err(&pdev->dev, "%s: failed to ioremap(0x%lx, %d).\n",  in matrox_w1_probe()
187 			__func__, dev->phys_addr, 16384);  in matrox_w1_probe()
192 	dev->base_addr = dev->virt_addr + MATROX_BASE;  in matrox_w1_probe()
193 	dev->port_index = dev->base_addr + MATROX_PORT_INDEX_OFFSET;  in matrox_w1_probe()
194 	dev->port_data = dev->base_addr + MATROX_PORT_DATA_OFFSET;  in matrox_w1_probe()
195 	dev->data_mask = (MATROX_G400_DDC_DATA);  in matrox_w1_probe()
197 	matrox_w1_hw_init(dev);  in matrox_w1_probe()
199 	dev->bus_master->data = dev;  in matrox_w1_probe()
200 	dev->bus_master->read_bit = &matrox_w1_read_ddc_bit;  in matrox_w1_probe()
201 	dev->bus_master->write_bit = &matrox_w1_write_ddc_bit;  in matrox_w1_probe()
203 	err = w1_add_master_device(dev->bus_master);  in matrox_w1_probe()
207 	pci_set_drvdata(pdev, dev);  in matrox_w1_probe()
209 	dev->found = 1;  in matrox_w1_probe()
211 	dev_info(&pdev->dev, "Matrox G400 GPIO transport layer for 1-wire.\n");  in matrox_w1_probe()
216 	if (dev->virt_addr)  in matrox_w1_probe()
217 		iounmap(dev->virt_addr);  in matrox_w1_probe()
218 	kfree(dev);  in matrox_w1_probe()
225 	struct matrox_device *dev = pci_get_drvdata(pdev);  in matrox_w1_remove()  local
227 	assert(dev != NULL);  in matrox_w1_remove()
229 	if (dev->found) {  in matrox_w1_remove()
230 		w1_remove_master_device(dev->bus_master);  in matrox_w1_remove()
231 		iounmap(dev->virt_addr);  in matrox_w1_remove()
233 	kfree(dev);  in matrox_w1_remove()