2  * ast_gpio.c - GPIO driver for the Aspeed SoC
10 #include <asm/gpio.h>
146 static inline void __iomem *bank_reg(struct aspeed_gpio_priv *gpio,  in bank_reg()  argument
147 				     const struct aspeed_gpio_bank *bank,  in bank_reg()  argument
152 		return gpio->regs + bank->val_regs + GPIO_VAL_VALUE;  in bank_reg()
154 		return gpio->regs + bank->rdata_reg;  in bank_reg()
156 		return gpio->regs + bank->val_regs + GPIO_VAL_DIR;  in bank_reg()
158 		return gpio->regs + bank->irq_regs + GPIO_IRQ_ENABLE;  in bank_reg()
160 		return gpio->regs + bank->irq_regs + GPIO_IRQ_TYPE0;  in bank_reg()
162 		return gpio->regs + bank->irq_regs + GPIO_IRQ_TYPE1;  in bank_reg()
164 		return gpio->regs + bank->irq_regs + GPIO_IRQ_TYPE2;  in bank_reg()
166 		return gpio->regs + bank->irq_regs + GPIO_IRQ_STATUS;  in bank_reg()
168 		return gpio->regs + bank->debounce_regs + GPIO_DEBOUNCE_SEL1;  in bank_reg()
170 		return gpio->regs + bank->debounce_regs + GPIO_DEBOUNCE_SEL2;  in bank_reg()
172 		return gpio->regs + bank->tolerance_regs;  in bank_reg()
174 		return gpio->regs + bank->cmdsrc_regs + GPIO_CMDSRC_0;  in bank_reg()
176 		return gpio->regs + bank->cmdsrc_regs + GPIO_CMDSRC_1;  in bank_reg()
187 	unsigned int bank = GPIO_BANK(offset);  in to_bank()  local
189 	WARN_ON(bank >= ARRAY_SIZE(aspeed_gpio_banks));  in to_bank()
190 	return &aspeed_gpio_banks[bank];  in to_bank()
197 	const struct aspeed_gpio_bank *bank = to_bank(offset);  in aspeed_gpio_direction_input()  local
198 	u32 dir = readl(bank_reg(priv, bank, reg_dir));  in aspeed_gpio_direction_input()
201 	writel(dir, bank_reg(priv, bank, reg_dir));  in aspeed_gpio_direction_input()
211 	const struct aspeed_gpio_bank *bank = to_bank(offset);  in aspeed_gpio_direction_output()  local
212 	u32 dir = readl(bank_reg(priv, bank, reg_dir));  in aspeed_gpio_direction_output()
213 	u32 output = readl(bank_reg(priv, bank, reg_rdata));  in aspeed_gpio_direction_output()
216 	writel(dir, bank_reg(priv, bank, reg_dir));  in aspeed_gpio_direction_output()
223 	writel(output, bank_reg(priv, bank, reg_val));  in aspeed_gpio_direction_output()
231 	const struct aspeed_gpio_bank *bank = to_bank(offset);  in aspeed_gpio_get_value()  local
233 	return !!(readl(bank_reg(priv, bank, reg_val)) & GPIO_BIT(offset));  in aspeed_gpio_get_value()
241 	const struct aspeed_gpio_bank *bank = to_bank(offset);  in aspeed_gpio_set_value()  local
242 	u32 data = readl(bank_reg(priv, bank, reg_rdata));  in aspeed_gpio_set_value()
249 	writel(data, bank_reg(priv, bank, reg_val));  in aspeed_gpio_set_value()
257 	const struct aspeed_gpio_bank *bank = to_bank(offset);  in aspeed_gpio_get_function()  local
259 	if(readl(bank_reg(priv, bank, reg_dir)) & GPIO_BIT(offset))  in aspeed_gpio_get_function()
278 	uc_priv->bank_name = dev->name;  in aspeed_gpio_probe()
279 	ofnode_read_u32(dev_ofnode(dev), "ngpios", &uc_priv->gpio_count);  in aspeed_gpio_probe()
280 	priv->regs = devfdt_get_addr_ptr(dev);  in aspeed_gpio_probe()
286 	{ .compatible = "aspeed,ast2400-gpio",  },
287 	{ .compatible = "aspeed,ast2500-gpio",	},
288 	{ .compatible = "aspeed,ast2600-gpio",	},