54 static unsigned int __i2c_set_bus_speed(struct lpc32xx_i2c_base *base,  in __i2c_set_bus_speed()  argument
73 	writel(half_period, &base->clk_hi);  in __i2c_set_bus_speed()
74 	writel(half_period, &base->clk_lo);  in __i2c_set_bus_speed()
79 static void __i2c_init(struct lpc32xx_i2c_base *base,  in __i2c_init()  argument
83 	writel(LPC32XX_I2C_SOFT_RESET, &base->ctrl);  in __i2c_init()
85 	__i2c_set_bus_speed(base, requested_speed, chip);  in __i2c_init()
89 static int __i2c_probe_chip(struct lpc32xx_i2c_base *base, u8 dev)  in __i2c_probe_chip()  argument
94 	writel(LPC32XX_I2C_SOFT_RESET, &base->ctrl);  in __i2c_probe_chip()
95 	while (readl(&base->ctrl) & LPC32XX_I2C_SOFT_RESET)  in __i2c_probe_chip()
99 	       &base->tx);  in __i2c_probe_chip()
101 	while (!((stat = readl(&base->stat)) & LPC32XX_I2C_STAT_TDI))  in __i2c_probe_chip()
111 static int __i2c_read(struct lpc32xx_i2c_base *base, u8 dev, uint addr,  in __i2c_read()  argument
117 	writel(LPC32XX_I2C_SOFT_RESET, &base->ctrl);  in __i2c_read()
118 	while (readl(&base->ctrl) & LPC32XX_I2C_SOFT_RESET)  in __i2c_read()
123 		writel((dev<<1) | LPC32XX_I2C_TX_START, &base->tx);  in __i2c_read()
131 			writel(a, &base->tx);  in __i2c_read()
134 		while (!((stat = readl(&base->stat)) & LPC32XX_I2C_STAT_TDI))  in __i2c_read()
137 		writel(1, &base->stat);  in __i2c_read()
142 		writel(1 | (dev<<1) | LPC32XX_I2C_TX_START, &base->tx);  in __i2c_read()
147 			stat = readl(&base->stat);  in __i2c_read()
154 				LPC32XX_I2C_TX_STOP, &base->tx);  in __i2c_read()
161 				*(data++) = readl(&base->rx);  in __i2c_read()
165 		while (!((stat = readl(&base->stat)) & LPC32XX_I2C_STAT_TDI))  in __i2c_read()
168 		writel(1, &base->stat);  in __i2c_read()
178 static int __i2c_write(struct lpc32xx_i2c_base *base, u8 dev, uint addr,  in __i2c_write()  argument
184 	writel(LPC32XX_I2C_SOFT_RESET, &base->ctrl);  in __i2c_write()
185 	while (readl(&base->ctrl) & LPC32XX_I2C_SOFT_RESET)  in __i2c_write()
190 		writel((dev<<1) | LPC32XX_I2C_TX_START, &base->tx);  in __i2c_write()
196 		stat = readl(&base->stat);  in __i2c_write()
203 			writel(a, &base->tx);  in __i2c_write()
208 		stat = readl(&base->stat);  in __i2c_write()
216 			writel(d, &base->tx);  in __i2c_write()
220 	while (!((stat = readl(&base->stat)) & LPC32XX_I2C_STAT_TDI))  in __i2c_write()
223 	writel(1, &base->stat);  in __i2c_write()
287 	__i2c_init(dev->base, dev->speed, 0, dev->index);
295 	return __i2c_probe_chip(dev->base, chip_addr);
324 		return __i2c_read(dev->base, dmsg->addr, address,
327 		return __i2c_write(dev->base, dmsg->addr, address,
334 	return __i2c_set_bus_speed(dev->base, speed, dev->index);
341 	__i2c_init(dev->base, dev->speed, 0, dev->index);