@@ -10,22 +10,31 @@
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
#include <linux/usb/tcpm.h>
#include <linux/regmap.h>
#include "tcpci.h"
#define RT1711H_VID 0x29CF
#define RT1711H_PID 0x1711
+#define RT1715_DID 0x2173
-#define RT1711H_RTCTRL8 0x9B
+#define RT1711H_PHYCTRL1 0x80
+#define RT1711H_PHYCTRL2 0x81
+
+#define RT1711H_RTCTRL4 0x93
+/* rx threshold of rd/rp: 1b0 for level 0.4V/0.7V, 1b1 for 0.35V/0.75V */
+#define RT1711H_BMCIO_RXDZSEL BIT(0)
+#define RT1711H_RTCTRL8 0x9B
/* Autoidle timeout = (tout * 2 + 1) * 6.4ms */
#define RT1711H_RTCTRL8_SET(ck300, ship_off, auto_idle, tout) \
(((ck300) << 7) | ((ship_off) << 5) | \
((auto_idle) << 3) | ((tout) & 0x07))
+#define RT1711H_AUTOIDLEEN_MASK BIT(3)
+#define RT1711H_ENEXTMSG_MASK BIT(4)
#define RT1711H_RTCTRL11 0x9E
-
/* I2C timeout = (tout + 1) * 12.5ms */
#define RT1711H_RTCTRL11_SET(en, tout) \
(((en) << 7) | ((tout) & 0x0F))
@@ -35,10 +44,17 @@
#define RT1711H_RTCTRL15 0xA2
#define RT1711H_RTCTRL16 0xA3
+#define RT1711H_RTCTRL18 0xAF
+/* 1b0 as fixed rx threshold of rd/rp 0.55V, 1b1 depends on RTCRTL4[0] */
+#define BMCIO_RXDZEN_MASK BIT(0)
+
struct rt1711h_chip {
struct tcpci_data data;
struct tcpci *tcpci;
struct device *dev;
+ struct regulator *vbus;
+ bool src_en;
+ u16 did;
};
static int rt1711h_read16(struct rt1711h_chip *chip, unsigned int reg, u16 *val)
@@ -75,8 +91,9 @@ static struct rt1711h_chip *tdata_to_rt1711h(struct tcpci_data *tdata)
static int rt1711h_init(struct tcpci *tcpci, struct tcpci_data *tdata)
{
- int ret;
struct rt1711h_chip *chip = tdata_to_rt1711h(tdata);
+ struct regmap *regmap = chip->data.regmap;
+ int ret;
/* CK 300K from 320K, shipping off, auto_idle enable, tout = 32ms */
ret = rt1711h_write8(chip, RT1711H_RTCTRL8,
@@ -84,6 +101,14 @@ static int rt1711h_init(struct tcpci *tcpci, struct tcpci_data *tdata)
if (ret < 0)
return ret;
+ /* Enable PD30 extended message for RT1715 */
+ if (chip->did == RT1715_DID) {
+ ret = regmap_update_bits(regmap, RT1711H_RTCTRL8,
+ RT1711H_ENEXTMSG_MASK, 0xFF);
+ if (ret < 0)
+ return ret;
+ }
+
/* I2C reset : (val + 1) * 12.5ms */
ret = rt1711h_write8(chip, RT1711H_RTCTRL11,
RT1711H_RTCTRL11_SET(1, 0x0F));
@@ -101,7 +126,37 @@ static int rt1711h_init(struct tcpci *tcpci, struct tcpci_data *tdata)
return ret;
/* dcSRC.DRP : 33% */
- return rt1711h_write16(chip, RT1711H_RTCTRL16, 330);
+ ret = rt1711h_write16(chip, RT1711H_RTCTRL16, 330);
+ if (ret < 0)
+ return ret;
+
+ /* Enable phy discard retry, retry count 7, rx filter deglitech 100 us */
+ ret = rt1711h_write8(chip, RT1711H_PHYCTRL1, 0xF1);
+ if (ret < 0)
+ return ret;
+
+ /* Decrease wait time of BMC-encoded 1 bit from 2.67us to 2.55us */
+ /* wait time : (val * .4167) us */
+ return rt1711h_write8(chip, RT1711H_PHYCTRL2, 62);
+}
+
+static int rt1711h_set_vbus(struct tcpci *tcpci, struct tcpci_data *tdata,
+ bool src, bool snk)
+{
+ struct rt1711h_chip *chip = tdata_to_rt1711h(tdata);
+ int ret;
+
+ if (chip->src_en == src)
+ return 1;
+
+ if (src)
+ ret = regulator_enable(chip->vbus);
+ else
+ ret = regulator_disable(chip->vbus);
+
+ if (!ret)
+ chip->src_en = src;
+ return ret ? ret : 1;
}
static int rt1711h_set_vconn(struct tcpci *tcpci, struct tcpci_data *tdata,
@@ -109,8 +164,93 @@ static int rt1711h_set_vconn(struct tcpci *tcpci, struct tcpci_data *tdata,
{
struct rt1711h_chip *chip = tdata_to_rt1711h(tdata);
- return rt1711h_write8(chip, RT1711H_RTCTRL8,
- RT1711H_RTCTRL8_SET(0, 1, !enable, 2));
+ return regmap_update_bits(chip->data.regmap, RT1711H_RTCTRL8,
+ RT1711H_AUTOIDLEEN_MASK, enable ? 0 : 0xFF);
+}
+
+/*
+ * Selects the CC PHY noise filter voltage level according to the current
+ * CC voltage level.
+ *
+ * @param cc_level The CC voltage level for the port's current role
+ * @return EC_SUCCESS if writes succeed; failure code otherwise
+ */
+static inline int rt1711h_init_cc_params(struct rt1711h_chip *chip,
+ enum typec_cc_status cc1, enum typec_cc_status cc2)
+{
+ u32 rxdz_en = 0, rxdz_sel = 0;
+ int ret;
+
+ if ((cc1 >= TYPEC_CC_RP_1_5 && cc2 < TYPEC_CC_RP_DEF) ||
+ (cc2 >= TYPEC_CC_RP_1_5 && cc1 < TYPEC_CC_RP_DEF)) {
+ if (chip->did == RT1715_DID) {
+ rxdz_en = 1;
+ rxdz_sel = 1;
+ } else {
+ rxdz_en = 1;
+ rxdz_sel = 0;
+ }
+ } else {
+ rxdz_en = 0;
+ rxdz_sel = 1;
+ }
+
+ ret = regmap_update_bits(chip->data.regmap, RT1711H_RTCTRL18,
+ BMCIO_RXDZEN_MASK, rxdz_en);
+ if (ret < 0)
+ return ret;
+
+ return regmap_update_bits(chip->data.regmap, RT1711H_RTCTRL4,
+ RT1711H_BMCIO_RXDZSEL, rxdz_en);
+}
+
+#define tcpc_presenting_rd(reg, cc) \
+ (!(TCPC_ROLE_CTRL_DRP & (reg)) && \
+ (((reg) & (TCPC_ROLE_CTRL_## cc ##_MASK << TCPC_ROLE_CTRL_## cc ##_SHIFT)) == \
+ (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_## cc ##_SHIFT)))
+
+static enum typec_cc_status tcpci_to_typec_cc(unsigned int cc, bool sink)
+{
+ switch (cc) {
+ case 0x1:
+ return sink ? TYPEC_CC_RP_DEF : TYPEC_CC_RA;
+ case 0x2:
+ return sink ? TYPEC_CC_RP_1_5 : TYPEC_CC_RD;
+ case 0x3:
+ if (sink)
+ return TYPEC_CC_RP_3_0;
+ fallthrough;
+ case 0x0:
+ default:
+ return TYPEC_CC_OPEN;
+ }
+}
+
+static int rt1711h_get_cc(struct tcpci *tcpci, struct tcpci_data *tdata,
+ enum typec_cc_status *cc1, enum typec_cc_status *cc2)
+{
+ struct rt1711h_chip *chip = tdata_to_rt1711h(tdata);
+ unsigned int reg, role_control;
+ int ret;
+
+ ret = regmap_read(chip->data.regmap, TCPC_ROLE_CTRL, &role_control);
+ if (ret < 0)
+ return ret;
+
+ ret = regmap_read(chip->data.regmap, TCPC_CC_STATUS, ®);
+ if (ret < 0)
+ return ret;
+
+ *cc1 = tcpci_to_typec_cc((reg >> TCPC_CC_STATUS_CC1_SHIFT) &
+ TCPC_CC_STATUS_CC1_MASK,
+ reg & TCPC_CC_STATUS_TERM ||
+ tcpc_presenting_rd(role_control, CC1));
+ *cc2 = tcpci_to_typec_cc((reg >> TCPC_CC_STATUS_CC2_SHIFT) &
+ TCPC_CC_STATUS_CC2_MASK,
+ reg & TCPC_CC_STATUS_TERM ||
+ tcpc_presenting_rd(role_control, CC2));
+
+ return rt1711h_init_cc_params(chip, *cc1, *cc2);
}
static int rt1711h_start_drp_toggling(struct tcpci *tcpci,
@@ -209,7 +349,11 @@ static int rt1711h_check_revision(struct i2c_client *i2c)
dev_err(&i2c->dev, "pid is not correct, 0x%04x\n", ret);
return -ENODEV;
}
- return 0;
+ ret = i2c_smbus_read_word_data(i2c, TCPC_BCD_DEV);
+ if (ret < 0)
+ return ret;
+ dev_info(&i2c->dev, "did is 0x%04x\n", ret);
+ return ret;
}
static int rt1711h_probe(struct i2c_client *client,
@@ -228,6 +372,8 @@ static int rt1711h_probe(struct i2c_client *client,
if (!chip)
return -ENOMEM;
+ chip->did = ret;
+
chip->data.regmap = devm_regmap_init_i2c(client,
&rt1711h_regmap_config);
if (IS_ERR(chip->data.regmap))
@@ -245,8 +391,14 @@ static int rt1711h_probe(struct i2c_client *client,
if (ret < 0)
return ret;
+ chip->vbus = devm_regulator_get(&client->dev, "vbus");
+ if (IS_ERR(chip->vbus))
+ return PTR_ERR(chip->vbus);
+
chip->data.init = rt1711h_init;
+ chip->data.set_vbus = rt1711h_set_vbus;
chip->data.set_vconn = rt1711h_set_vconn;
+ chip->data.get_cc = rt1711h_get_cc;
chip->data.start_drp_toggling = rt1711h_start_drp_toggling;
chip->tcpci = tcpci_register_port(chip->dev, &chip->data);
if (IS_ERR_OR_NULL(chip->tcpci))
@@ -273,6 +425,7 @@ static int rt1711h_remove(struct i2c_client *client)
static const struct i2c_device_id rt1711h_id[] = {
{ "rt1711h", 0 },
+ { "rt1715", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, rt1711h_id);
@@ -280,6 +433,7 @@ MODULE_DEVICE_TABLE(i2c, rt1711h_id);
#ifdef CONFIG_OF
static const struct of_device_id rt1711h_of_match[] = {
{ .compatible = "richtek,rt1711h", },
+ { .compatible = "richtek,rt1715", },
{},
};
MODULE_DEVICE_TABLE(of, rt1711h_of_match);