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Fri, 15 Jul 2022 03:04:40 -0700 (PDT) Received: from genechen-System-Product-Name.richtek.com ([2402:7500:569:4518:3851:6d9:846d:fbd1]) by smtp.gmail.com with ESMTPSA id v12-20020a1709028d8c00b0016c1948ef7esm3033791plo.296.2022.07.15.03.04.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 15 Jul 2022 03:04:40 -0700 (PDT) From: Gene Chen To: linux@roeck-us.net, heikki.krogerus@linux.intel.com, gregkh@linuxfoundation.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, gene_chen@richtek.com, cy_huang@richtek.com Subject: [PATCH 3/3] usb: typec: tcpci_rt1711h: Add compatible with rt1715 Date: Fri, 15 Jul 2022 18:04:18 +0800 Message-Id: <20220715100418.155011-4-gene.chen.richtek@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220715100418.155011-1-gene.chen.richtek@gmail.com> References: <20220715100418.155011-1-gene.chen.richtek@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Gene Chen Add compatible with rt1715 Signed-off-by: Gene Chen Reported-by: kernel test robot --- drivers/usb/typec/tcpm/tcpci_rt1711h.c | 168 +++++++++++++++++++++++-- 1 file changed, 161 insertions(+), 7 deletions(-) diff --git a/drivers/usb/typec/tcpm/tcpci_rt1711h.c b/drivers/usb/typec/tcpm/tcpci_rt1711h.c index b56a0880a044..1fba98e4ef03 100644 --- a/drivers/usb/typec/tcpm/tcpci_rt1711h.c +++ b/drivers/usb/typec/tcpm/tcpci_rt1711h.c @@ -10,22 +10,31 @@ #include #include #include +#include #include #include #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);