119 static void rk_i2c_set_clk(struct rk_i2c *i2c, unsigned int scl_rate)  in rk_i2c_set_clk()  argument
125 	i2c_rate = clk_get_rate(&i2c->clk);  in rk_i2c_set_clk()
132 	writel(I2C_CLKDIV_VAL(divl, divh), &i2c->regs->clkdiv);  in rk_i2c_set_clk()
137 	debug("set clk(I2C_CLKDIV: 0x%08x)\n", readl(&i2c->regs->clkdiv));  in rk_i2c_set_clk()
140 static int rk_i2c_adapter_clk(struct rk_i2c *i2c, unsigned int scl_rate)  in rk_i2c_adapter_clk()  argument
147 	unsigned int i2c_rate = clk_get_rate(&i2c->clk);  in rk_i2c_adapter_clk()
201 	i2c->cfg = I2C_CON_SDA_CFG(1) | I2C_CON_STA_CFG(start_setup);  in rk_i2c_adapter_clk()
203 	       &i2c->regs->clkdiv);  in rk_i2c_adapter_clk()
205 	debug("set clk(I2C_TIMING: 0x%08x)\n", i2c->cfg);  in rk_i2c_adapter_clk()
206 	debug("set clk(I2C_CLKDIV: 0x%08x)\n", readl(&i2c->regs->clkdiv));  in rk_i2c_adapter_clk()
211 static int rk_i2c_send_start_bit(struct rk_i2c *i2c, u32 con)  in rk_i2c_send_start_bit()  argument
213 	struct i2c_regs *regs = i2c->regs;  in rk_i2c_send_start_bit()
220 	writel(I2C_CON_EN | I2C_CON_START | i2c->cfg | con, &regs->con);  in rk_i2c_send_start_bit()
237 	writel(I2C_CON_EN | i2c->cfg | con, &regs->con);  in rk_i2c_send_start_bit()
242 static int rk_i2c_send_stop_bit(struct rk_i2c *i2c)  in rk_i2c_send_stop_bit()  argument
244 	struct i2c_regs *regs = i2c->regs;  in rk_i2c_send_stop_bit()
250 	writel(I2C_CON_EN | i2c->cfg | I2C_CON_STOP, &regs->con);  in rk_i2c_send_stop_bit()
271 static inline void rk_i2c_disable(struct rk_i2c *i2c)  in rk_i2c_disable()  argument
273 	writel(0, &i2c->regs->ien);  in rk_i2c_disable()
274 	writel(I2C_IPD_ALL_CLEAN, &i2c->regs->ipd);  in rk_i2c_disable()
275 	writel(0, &i2c->regs->con);  in rk_i2c_disable()
278 static int rk_i2c_read(struct rk_i2c *i2c, uchar chip, uint reg, uint r_len,  in rk_i2c_read()  argument
281 	struct i2c_regs *regs = i2c->regs;  in rk_i2c_read()
330 			writel(con | i2c->cfg, &regs->con);  in rk_i2c_read()
333 			err = rk_i2c_send_start_bit(i2c, con);  in rk_i2c_read()
380 static int rk_i2c_write(struct rk_i2c *i2c, uchar chip, uint reg, uint r_len,  in rk_i2c_write()  argument
383 	struct i2c_regs *regs = i2c->regs;  in rk_i2c_write()
425 			err = rk_i2c_send_start_bit(i2c, I2C_CON_EN |  in rk_i2c_write()
431 			writel(I2C_CON_EN | I2C_CON_MOD(I2C_MODE_TX) | i2c->cfg,  in rk_i2c_write()
468 	struct rk_i2c *i2c = dev_get_priv(bus);  in rockchip_i2c_xfer()  local
485 	i2c->cfg |= I2C_CON_ACTACK;  in rockchip_i2c_xfer()
491 			ret = rk_i2c_read(i2c, msg->addr, 0, 0, msg->buf,  in rockchip_i2c_xfer()
495 			ret = rk_i2c_write(i2c, msg->addr, 0, 0, msg->buf,  in rockchip_i2c_xfer()
506 	rk_i2c_send_stop_bit(i2c);  in rockchip_i2c_xfer()
507 	rk_i2c_disable(i2c);  in rockchip_i2c_xfer()
514 static unsigned int rk3x_i2c_get_version(struct rk_i2c *i2c)  in rk3x_i2c_get_version()  argument
516 	struct i2c_regs *regs = i2c->regs;  in rk3x_i2c_get_version()
526 	struct rk_i2c *i2c = dev_get_priv(bus);  in rockchip_i2c_set_bus_speed()  local
528 	if (rk3x_i2c_get_version(i2c) >= RK_I2C_VERSION1)  in rockchip_i2c_set_bus_speed()
529 		rk_i2c_adapter_clk(i2c, speed);  in rockchip_i2c_set_bus_speed()
531 		rk_i2c_set_clk(i2c, speed);  in rockchip_i2c_set_bus_speed()