+/* The chip has 18 GPIOs. In HOST mode GPIO's used as 15 bit address lines,
+ so we can use only 3 GPIO's from GPIO15 to GPIO17.
+ Here I don't check whether HOST is enebled as it is not implemented yet.
+ */
+static void dm1105_gpio_set(struct dm1105_dev *dev, u32 mask)
+{
+ if (mask & 0xfffc0000)
+ printk(KERN_ERR "%s: Only 18 GPIO's are allowed\n", __func__);
+
+ if (mask & 0x0003ffff)
+ dm_setl(DM1105_GPIOVAL, mask & 0x0003ffff);
+
+}
+
+static void dm1105_gpio_clear(struct dm1105_dev *dev, u32 mask)
+{
+ if (mask & 0xfffc0000)
+ printk(KERN_ERR "%s: Only 18 GPIO's are allowed\n", __func__);
+
+ if (mask & 0x0003ffff)
+ dm_clearl(DM1105_GPIOVAL, mask & 0x0003ffff);
+
+}
+
+static void dm1105_gpio_andor(struct dm1105_dev *dev, u32 mask, u32 val)
+{
+ if (mask & 0xfffc0000)
+ printk(KERN_ERR "%s: Only 18 GPIO's are allowed\n", __func__);
+
+ if (mask & 0x0003ffff)
+ dm_andorl(DM1105_GPIOVAL, mask & 0x0003ffff, val);
+
+}
+
+static u32 dm1105_gpio_get(struct dm1105_dev *dev, u32 mask)
+{
+ if (mask & 0xfffc0000)
+ printk(KERN_ERR "%s: Only 18 GPIO's are allowed\n", __func__);
+
+ if (mask & 0x0003ffff)
+ return dm_readl(DM1105_GPIOVAL) & mask & 0x0003ffff;
+
+ return 0;
+}
+
+static void dm1105_gpio_enable(struct dm1105_dev *dev, u32 mask, int asoutput)
+{
+ if (mask & 0xfffc0000)
+ printk(KERN_ERR "%s: Only 18 GPIO's are allowed\n", __func__);
+
+ if ((mask & 0x0003ffff) && asoutput)
+ dm_clearl(DM1105_GPIOCTR, mask & 0x0003ffff);
+ else if ((mask & 0x0003ffff) && !asoutput)
+ dm_setl(DM1105_GPIOCTR, mask & 0x0003ffff);
+
+}
+
+static void dm1105_setline(struct dm1105_dev *dev, u32 line, int state)
+{
+ if (state)
+ dm1105_gpio_enable(dev, line, 0);
+ else {
+ dm1105_gpio_enable(dev, line, 1);
+ dm1105_gpio_clear(dev, line);
+ }
+}
+
+static void dm1105_setsda(void *data, int state)
+{
+ struct dm1105_dev *dev = data;
+
+ dm1105_setline(dev, dm1105_boards[dev->boardnr].gpio_sda, state);
+}
+
+static void dm1105_setscl(void *data, int state)
+{
+ struct dm1105_dev *dev = data;
+
+ dm1105_setline(dev, dm1105_boards[dev->boardnr].gpio_scl, state);
+}
+
+static int dm1105_getsda(void *data)
+{
+ struct dm1105_dev *dev = data;
+
+ return dm1105_gpio_get(dev, dm1105_boards[dev->boardnr].gpio_sda)
+ ? 1 : 0;
+}
+
+static int dm1105_getscl(void *data)
+{
+ struct dm1105_dev *dev = data;
+
+ return dm1105_gpio_get(dev, dm1105_boards[dev->boardnr].gpio_scl)
+ ? 1 : 0;
+}
+