| Message ID | 1598440602-8648-1-git-send-email-u0084500@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/2] usb typec: mt6360: Add support for mt6360 Type-C driver | expand |
On 8/26/20 4:16 AM, cy_huang wrote: > From: ChiYuan Huang <cy_huang@richtek.com> > > Mediatek MT6360 is a multi-functional IC that includes USB Type-C. > It works with Type-C Port Controller Manager to provide USB PD > and USB Type-C functionalities. > > Signed-off-by: ChiYuan Huang <cy_huang@richtek.com> > --- > drivers/usb/typec/tcpm/Kconfig | 8 ++ > drivers/usb/typec/tcpm/Makefile | 1 + > drivers/usb/typec/tcpm/tcpci_mt6360.c | 212 ++++++++++++++++++++++++++++++++++ > 3 files changed, 221 insertions(+) > create mode 100644 drivers/usb/typec/tcpm/tcpci_mt6360.c > > diff --git a/drivers/usb/typec/tcpm/Kconfig b/drivers/usb/typec/tcpm/Kconfig > index fa3f393..58a64e1 100644 > --- a/drivers/usb/typec/tcpm/Kconfig > +++ b/drivers/usb/typec/tcpm/Kconfig > @@ -27,6 +27,14 @@ config TYPEC_RT1711H > Type-C Port Controller Manager to provide USB PD and USB > Type-C functionalities. > > +config TYPEC_MT6360 > + tristate "Mediatek MT6360 Type-C driver" > + depends on MFD_MT6360 > + help > + Mediatek MT6360 is a multi-functional IC that includes > + USB Type-C. It works with Type-C Port Controller Manager > + to provide USB PD and USB Type-C functionalities. > + > endif # TYPEC_TCPCI > > config TYPEC_FUSB302 > diff --git a/drivers/usb/typec/tcpm/Makefile b/drivers/usb/typec/tcpm/Makefile > index a5ff6c8..7592ccb 100644 > --- a/drivers/usb/typec/tcpm/Makefile > +++ b/drivers/usb/typec/tcpm/Makefile > @@ -5,3 +5,4 @@ obj-$(CONFIG_TYPEC_WCOVE) += typec_wcove.o > typec_wcove-y := wcove.o > obj-$(CONFIG_TYPEC_TCPCI) += tcpci.o > obj-$(CONFIG_TYPEC_RT1711H) += tcpci_rt1711h.o > +obj-$(CONFIG_TYPEC_MT6360) += tcpci_mt6360.o > diff --git a/drivers/usb/typec/tcpm/tcpci_mt6360.c b/drivers/usb/typec/tcpm/tcpci_mt6360.c > new file mode 100644 > index 00000000..6a28193 > --- /dev/null > +++ b/drivers/usb/typec/tcpm/tcpci_mt6360.c > @@ -0,0 +1,212 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +// > +// Copyright (C) 2020 MediaTek Inc. > +// > +// Author: ChiYuan Huang <cy_huang@richtek.com> > + > +#include <linux/interrupt.h> > +#include <linux/kernel.h> > +#include <linux/module.h> > +#include <linux/of.h> > +#include <linux/platform_device.h> > +#include <linux/regmap.h> > +#include <linux/usb/tcpm.h> Is that needed ? > + > +#include "tcpci.h" > + > +#define MT6360_REG_VCONNCTRL1 0x8C > +#define MT6360_REG_MODECTRL2 0x8F > +#define MT6360_REG_SWRESET 0xA0 > +#define MT6360_REG_DEBCTRL1 0xA1 > +#define MT6360_REG_DRPCTRL1 0xA2 > +#define MT6360_REG_DRPCTRL2 0xA3 > +#define MT6360_REG_I2CTORST 0xBF > +#define MT6360_REG_RXCTRL2 0xCF > +#define MT6360_REG_CTDCTRL2 0xEC > + > +/* MT6360_REG_VCONNCTRL1 */ > +#define MT6360_VCONNCL_ENABLE BIT(0) > +/* MT6360_REG_RXCTRL2 */ > +#define MT6360_OPEN40M_ENABLE BIT(7) > +/* MT6360_REG_CTDCTRL2 */ > +#define MT6360_RPONESHOT_ENABLE BIT(6) > + > +struct mt6360_tcpc_info { > + struct tcpci_data tdata; > + struct tcpci *tcpci; > + struct device *dev; > + int irq; > +}; > + > +static inline int mt6360_tcpc_read16(struct regmap *regmap, > + unsigned int reg, u16 *val) > +{ > + return regmap_raw_read(regmap, reg, val, sizeof(u16)); > +} > + > +static inline int mt6360_tcpc_write16(struct regmap *regmap, > + unsigned int reg, u16 val) > +{ > + return regmap_raw_write(regmap, reg, &val, sizeof(u16)); > +} > + > +static int mt6360_tcpc_init(struct tcpci *tcpci, struct tcpci_data *tdata) > +{ > + struct regmap *regmap = tdata->regmap; > + int ret; > + > + ret = regmap_write(regmap, MT6360_REG_SWRESET, 0x01); > + if (ret) > + return ret; > + > + /* after reset command, wait 1~2ms to wait IC action */ > + usleep_range(1000, 2000); > + > + /* write all alert to masked */ > + ret = mt6360_tcpc_write16(regmap, TCPC_ALERT_MASK, 0); > + if (ret) > + return ret; > + > + /* config I2C timeout reset enable , and timeout to 200ms */ > + ret = regmap_write(regmap, MT6360_REG_I2CTORST, 0x8F); > + if (ret) > + return ret; > + > + /* config CC Detect Debounce : 26.7*val us */ > + ret = regmap_write(regmap, MT6360_REG_DEBCTRL1, 0x10); > + if (ret) > + return ret; > + > + /* DRP Toggle Cycle : 51.2 + 6.4*val ms */ > + ret = regmap_write(regmap, MT6360_REG_DRPCTRL1, 4); > + if (ret) > + return ret; > + > + /* DRP Duyt Ctrl : dcSRC: /1024 */ > + ret = mt6360_tcpc_write16(regmap, MT6360_REG_DRPCTRL2, 330); > + if (ret) > + return ret; > + > + /* Enable VCONN Current Limit function */ > + ret = regmap_update_bits(regmap, MT6360_REG_VCONNCTRL1, MT6360_VCONNCL_ENABLE, > + MT6360_VCONNCL_ENABLE); > + if (ret) > + return ret; > + > + /* Enable cc open 40ms when pmic send vsysuv signal */ > + ret = regmap_update_bits(regmap, MT6360_REG_RXCTRL2, MT6360_OPEN40M_ENABLE, > + MT6360_OPEN40M_ENABLE); > + if (ret) > + return ret; > + > + /* Enable Rpdet oneshot detection */ > + ret = regmap_update_bits(regmap, MT6360_REG_CTDCTRL2, MT6360_RPONESHOT_ENABLE, > + MT6360_RPONESHOT_ENABLE); > + if (ret) > + return ret; > + > + /* Set shipping mode off, AUTOIDLE on */ > + return regmap_write(regmap, MT6360_REG_MODECTRL2, 0x7A); > +} > + > +static irqreturn_t mt6360_irq(int irq, void *dev_id) > +{ > + struct mt6360_tcpc_info *mti = dev_id; > + > + return tcpci_irq(mti->tcpci); > +} > + > +static int mt6360_tcpc_probe(struct platform_device *pdev) > +{ > + struct mt6360_tcpc_info *mti; > + int ret; > + > + mti = devm_kzalloc(&pdev->dev, sizeof(*mti), GFP_KERNEL); > + if (!mti) > + return -ENOMEM; > + > + mti->dev = &pdev->dev; > + > + mti->tdata.regmap = dev_get_regmap(pdev->dev.parent, NULL); > + if (!mti->tdata.regmap) { > + dev_err(&pdev->dev, "Failed to get parent regmap\n"); > + return -ENODEV; > + } > + > + mti->irq = platform_get_irq_byname(pdev, "PD_IRQB"); > + if (mti->irq < 0) { > + dev_err(&pdev->dev, "Failed to get PD_IRQB irq\n"); > + return mti->irq; > + } > + > + mti->tdata.init = mt6360_tcpc_init; > + mti->tcpci = tcpci_register_port(&pdev->dev, &mti->tdata); > + if (IS_ERR_OR_NULL(mti->tcpci)) { > + dev_err(&pdev->dev, "Failed to register tcpci port\n"); > + return PTR_ERR(mti->tcpci); > + } > + > + ret = devm_request_threaded_irq(mti->dev, mti->irq, NULL, mt6360_irq, IRQF_ONESHOT, > + dev_name(&pdev->dev), mti); > + if (ret) { > + dev_err(mti->dev, "Failed to register irq\n"); > + tcpci_unregister_port(mti->tcpci); > + return ret; > + } > + > + device_init_wakeup(&pdev->dev, true); > + platform_set_drvdata(pdev, mti); > + > + return 0; > +} > + > +static int mt6360_tcpc_remove(struct platform_device *pdev) > +{ > + struct mt6360_tcpc_info *mti = platform_get_drvdata(pdev); > + > + tcpci_unregister_port(mti->tcpci); That leaves interrupts enabled, which might be racy because interrupts are still enabled here. Guenter > + return 0; > +} > + > +static int __maybe_unused mt6360_tcpc_suspend(struct device *dev) > +{ > + struct mt6360_tcpc_info *mti = dev_get_drvdata(dev);> + > + if (device_may_wakeup(dev)) > + enable_irq_wake(mti->irq); > + > + return 0; > +} > + > +static int __maybe_unused mt6360_tcpc_resume(struct device *dev) > +{ > + struct mt6360_tcpc_info *mti = dev_get_drvdata(dev); > + > + if (device_may_wakeup(dev)) > + disable_irq_wake(mti->irq); > + > + return 0; > +} > + > +static SIMPLE_DEV_PM_OPS(mt6360_tcpc_pm_ops, mt6360_tcpc_suspend, mt6360_tcpc_resume); > + > +static const struct of_device_id __maybe_unused mt6360_tcpc_of_id[] = { > + { .compatible = "mediatek,mt6360-tcpc", }, > + {}, > +}; > +MODULE_DEVICE_TABLE(of, mt6360_tcpc_of_id); > + > +static struct platform_driver mt6360_tcpc_driver = { > + .driver = { > + .name = "mt6360-tcpc", > + .pm = &mt6360_tcpc_pm_ops, > + .of_match_table = mt6360_tcpc_of_id, > + }, > + .probe = mt6360_tcpc_probe, > + .remove = mt6360_tcpc_remove, > +}; > +module_platform_driver(mt6360_tcpc_driver); > + > +MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>"); > +MODULE_DESCRIPTION("MT6360 USB Type-C Port Controller Interface Driver"); > +MODULE_LICENSE("GPL v2"); >
Guenter Roeck <linux@roeck-us.net> 於 2020年8月27日 週四 上午4:44寫道： > > On 8/26/20 4:16 AM, cy_huang wrote: > > From: ChiYuan Huang <cy_huang@richtek.com> > > > > Mediatek MT6360 is a multi-functional IC that includes USB Type-C. > > It works with Type-C Port Controller Manager to provide USB PD > > and USB Type-C functionalities. > > > > Signed-off-by: ChiYuan Huang <cy_huang@richtek.com> > > --- > > drivers/usb/typec/tcpm/Kconfig | 8 ++ > > drivers/usb/typec/tcpm/Makefile | 1 + > > drivers/usb/typec/tcpm/tcpci_mt6360.c | 212 ++++++++++++++++++++++++++++++++++ > > 3 files changed, 221 insertions(+) > > create mode 100644 drivers/usb/typec/tcpm/tcpci_mt6360.c > > > > diff --git a/drivers/usb/typec/tcpm/Kconfig b/drivers/usb/typec/tcpm/Kconfig > > index fa3f393..58a64e1 100644 > > --- a/drivers/usb/typec/tcpm/Kconfig > > +++ b/drivers/usb/typec/tcpm/Kconfig > > @@ -27,6 +27,14 @@ config TYPEC_RT1711H > > Type-C Port Controller Manager to provide USB PD and USB > > Type-C functionalities. > > > > +config TYPEC_MT6360 > > + tristate "Mediatek MT6360 Type-C driver" > > + depends on MFD_MT6360 > > + help > > + Mediatek MT6360 is a multi-functional IC that includes > > + USB Type-C. It works with Type-C Port Controller Manager > > + to provide USB PD and USB Type-C functionalities. > > + > > endif # TYPEC_TCPCI > > > > config TYPEC_FUSB302 > > diff --git a/drivers/usb/typec/tcpm/Makefile b/drivers/usb/typec/tcpm/Makefile > > index a5ff6c8..7592ccb 100644 > > --- a/drivers/usb/typec/tcpm/Makefile > > +++ b/drivers/usb/typec/tcpm/Makefile > > @@ -5,3 +5,4 @@ obj-$(CONFIG_TYPEC_WCOVE) += typec_wcove.o > > typec_wcove-y := wcove.o > > obj-$(CONFIG_TYPEC_TCPCI) += tcpci.o > > obj-$(CONFIG_TYPEC_RT1711H) += tcpci_rt1711h.o > > +obj-$(CONFIG_TYPEC_MT6360) += tcpci_mt6360.o > > diff --git a/drivers/usb/typec/tcpm/tcpci_mt6360.c b/drivers/usb/typec/tcpm/tcpci_mt6360.c > > new file mode 100644 > > index 00000000..6a28193 > > --- /dev/null > > +++ b/drivers/usb/typec/tcpm/tcpci_mt6360.c > > @@ -0,0 +1,212 @@ > > +// SPDX-License-Identifier: GPL-2.0-only > > +// > > +// Copyright (C) 2020 MediaTek Inc. > > +// > > +// Author: ChiYuan Huang <cy_huang@richtek.com> > > + > > +#include <linux/interrupt.h> > > +#include <linux/kernel.h> > > +#include <linux/module.h> > > +#include <linux/of.h> > > +#include <linux/platform_device.h> > > +#include <linux/regmap.h> > > +#include <linux/usb/tcpm.h> > > Is that needed ? Ah, sorry, for some testing, I forget to remove it. > > > + > > +#include "tcpci.h" > > + > > +#define MT6360_REG_VCONNCTRL1 0x8C > > +#define MT6360_REG_MODECTRL2 0x8F > > +#define MT6360_REG_SWRESET 0xA0 > > +#define MT6360_REG_DEBCTRL1 0xA1 > > +#define MT6360_REG_DRPCTRL1 0xA2 > > +#define MT6360_REG_DRPCTRL2 0xA3 > > +#define MT6360_REG_I2CTORST 0xBF > > +#define MT6360_REG_RXCTRL2 0xCF > > +#define MT6360_REG_CTDCTRL2 0xEC > > + > > +/* MT6360_REG_VCONNCTRL1 */ > > +#define MT6360_VCONNCL_ENABLE BIT(0) > > +/* MT6360_REG_RXCTRL2 */ > > +#define MT6360_OPEN40M_ENABLE BIT(7) > > +/* MT6360_REG_CTDCTRL2 */ > > +#define MT6360_RPONESHOT_ENABLE BIT(6) > > + > > +struct mt6360_tcpc_info { > > + struct tcpci_data tdata; > > + struct tcpci *tcpci; > > + struct device *dev; > > + int irq; > > +}; > > + > > +static inline int mt6360_tcpc_read16(struct regmap *regmap, > > + unsigned int reg, u16 *val) > > +{ > > + return regmap_raw_read(regmap, reg, val, sizeof(u16)); > > +} > > + > > +static inline int mt6360_tcpc_write16(struct regmap *regmap, > > + unsigned int reg, u16 val) > > +{ > > + return regmap_raw_write(regmap, reg, &val, sizeof(u16)); > > +} > > + > > +static int mt6360_tcpc_init(struct tcpci *tcpci, struct tcpci_data *tdata) > > +{ > > + struct regmap *regmap = tdata->regmap; > > + int ret; > > + > > + ret = regmap_write(regmap, MT6360_REG_SWRESET, 0x01); > > + if (ret) > > + return ret; > > + > > + /* after reset command, wait 1~2ms to wait IC action */ > > + usleep_range(1000, 2000); > > + > > + /* write all alert to masked */ > > + ret = mt6360_tcpc_write16(regmap, TCPC_ALERT_MASK, 0); > > + if (ret) > > + return ret; > > + > > + /* config I2C timeout reset enable , and timeout to 200ms */ > > + ret = regmap_write(regmap, MT6360_REG_I2CTORST, 0x8F); > > + if (ret) > > + return ret; > > + > > + /* config CC Detect Debounce : 26.7*val us */ > > + ret = regmap_write(regmap, MT6360_REG_DEBCTRL1, 0x10); > > + if (ret) > > + return ret; > > + > > + /* DRP Toggle Cycle : 51.2 + 6.4*val ms */ > > + ret = regmap_write(regmap, MT6360_REG_DRPCTRL1, 4); > > + if (ret) > > + return ret; > > + > > + /* DRP Duyt Ctrl : dcSRC: /1024 */ > > + ret = mt6360_tcpc_write16(regmap, MT6360_REG_DRPCTRL2, 330); > > + if (ret) > > + return ret; > > + > > + /* Enable VCONN Current Limit function */ > > + ret = regmap_update_bits(regmap, MT6360_REG_VCONNCTRL1, MT6360_VCONNCL_ENABLE, > > + MT6360_VCONNCL_ENABLE); > > + if (ret) > > + return ret; > > + > > + /* Enable cc open 40ms when pmic send vsysuv signal */ > > + ret = regmap_update_bits(regmap, MT6360_REG_RXCTRL2, MT6360_OPEN40M_ENABLE, > > + MT6360_OPEN40M_ENABLE); > > + if (ret) > > + return ret; > > + > > + /* Enable Rpdet oneshot detection */ > > + ret = regmap_update_bits(regmap, MT6360_REG_CTDCTRL2, MT6360_RPONESHOT_ENABLE, > > + MT6360_RPONESHOT_ENABLE); > > + if (ret) > > + return ret; > > + > > + /* Set shipping mode off, AUTOIDLE on */ > > + return regmap_write(regmap, MT6360_REG_MODECTRL2, 0x7A); > > +} > > + > > +static irqreturn_t mt6360_irq(int irq, void *dev_id) > > +{ > > + struct mt6360_tcpc_info *mti = dev_id; > > + > > + return tcpci_irq(mti->tcpci); > > +} > > + > > +static int mt6360_tcpc_probe(struct platform_device *pdev) > > +{ > > + struct mt6360_tcpc_info *mti; > > + int ret; > > + > > + mti = devm_kzalloc(&pdev->dev, sizeof(*mti), GFP_KERNEL); > > + if (!mti) > > + return -ENOMEM; > > + > > + mti->dev = &pdev->dev; > > + > > + mti->tdata.regmap = dev_get_regmap(pdev->dev.parent, NULL); > > + if (!mti->tdata.regmap) { > > + dev_err(&pdev->dev, "Failed to get parent regmap\n"); > > + return -ENODEV; > > + } > > + > > + mti->irq = platform_get_irq_byname(pdev, "PD_IRQB"); > > + if (mti->irq < 0) { > > + dev_err(&pdev->dev, "Failed to get PD_IRQB irq\n"); > > + return mti->irq; > > + } > > + > > + mti->tdata.init = mt6360_tcpc_init; > > + mti->tcpci = tcpci_register_port(&pdev->dev, &mti->tdata); > > + if (IS_ERR_OR_NULL(mti->tcpci)) { > > + dev_err(&pdev->dev, "Failed to register tcpci port\n"); > > + return PTR_ERR(mti->tcpci); > > + } > > + > > + ret = devm_request_threaded_irq(mti->dev, mti->irq, NULL, mt6360_irq, IRQF_ONESHOT, > > + dev_name(&pdev->dev), mti); > > + if (ret) { > > + dev_err(mti->dev, "Failed to register irq\n"); > > + tcpci_unregister_port(mti->tcpci); > > + return ret; > > + } > > + > > + device_init_wakeup(&pdev->dev, true); > > + platform_set_drvdata(pdev, mti); > > + > > + return 0; > > +} > > + > > +static int mt6360_tcpc_remove(struct platform_device *pdev) > > +{ > > + struct mt6360_tcpc_info *mti = platform_get_drvdata(pdev); > > + > > + tcpci_unregister_port(mti->tcpci); > > That leaves interrupts enabled, which might be racy > because interrupts are still enabled here. M..., yes, it will cause the race condition during module remove. I'll add disable_irq before tcpci unregister to prevent it. > > Guenter > > > + return 0; > > +} > > + > > +static int __maybe_unused mt6360_tcpc_suspend(struct device *dev) > > +{ > > + struct mt6360_tcpc_info *mti = dev_get_drvdata(dev);> + > > + if (device_may_wakeup(dev)) > > + enable_irq_wake(mti->irq); > > + > > + return 0; > > +} > > + > > +static int __maybe_unused mt6360_tcpc_resume(struct device *dev) > > +{ > > + struct mt6360_tcpc_info *mti = dev_get_drvdata(dev); > > + > > + if (device_may_wakeup(dev)) > > + disable_irq_wake(mti->irq); > > + > > + return 0; > > +} > > + > > +static SIMPLE_DEV_PM_OPS(mt6360_tcpc_pm_ops, mt6360_tcpc_suspend, mt6360_tcpc_resume); > > + > > +static const struct of_device_id __maybe_unused mt6360_tcpc_of_id[] = { > > + { .compatible = "mediatek,mt6360-tcpc", }, > > + {}, > > +}; > > +MODULE_DEVICE_TABLE(of, mt6360_tcpc_of_id); > > + > > +static struct platform_driver mt6360_tcpc_driver = { > > + .driver = { > > + .name = "mt6360-tcpc", > > + .pm = &mt6360_tcpc_pm_ops, > > + .of_match_table = mt6360_tcpc_of_id, > > + }, > > + .probe = mt6360_tcpc_probe, > > + .remove = mt6360_tcpc_remove, > > +}; > > +module_platform_driver(mt6360_tcpc_driver); > > + > > +MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>"); > > +MODULE_DESCRIPTION("MT6360 USB Type-C Port Controller Interface Driver"); > > +MODULE_LICENSE("GPL v2"); > > >
On 8/26/20 5:59 PM, 啟原黃 wrote: [ ... ] >>> +static int mt6360_tcpc_remove(struct platform_device *pdev) >>> +{ >>> + struct mt6360_tcpc_info *mti = platform_get_drvdata(pdev); >>> + >>> + tcpci_unregister_port(mti->tcpci); >> >> That leaves interrupts enabled, which might be racy >> because interrupts are still enabled here. > M..., yes, it will cause the race condition during module remove. > I'll add disable_irq before tcpci unregister to prevent it. Or just set TCPC_ALERT_MASK to 0, as in tcpci.c. Guenter
Guenter Roeck <linux@roeck-us.net> 於 2020年8月27日 週四 上午9:02寫道： > > On 8/26/20 5:59 PM, 啟原黃 wrote: > [ ... ] > >>> +static int mt6360_tcpc_remove(struct platform_device *pdev) > >>> +{ > >>> + struct mt6360_tcpc_info *mti = platform_get_drvdata(pdev); > >>> + > >>> + tcpci_unregister_port(mti->tcpci); > >> > >> That leaves interrupts enabled, which might be racy > >> because interrupts are still enabled here. > > M..., yes, it will cause the race condition during module remove. > > I'll add disable_irq before tcpci unregister to prevent it. > > Or just set TCPC_ALERT_MASK to 0, as in tcpci.c. Both are right, Thx. I'll choose one. BTW, it seems enum typec_cc_status is used by tcpci.h. If I don't include tcpm.h, it will raise a warning during the compile time. > > Guenter
On 8/26/20 6:11 PM, 啟原黃 wrote: > Guenter Roeck <linux@roeck-us.net> 於 2020年8月27日 週四 上午9:02寫道： >> >> On 8/26/20 5:59 PM, 啟原黃 wrote: >> [ ... ] >>>>> +static int mt6360_tcpc_remove(struct platform_device *pdev) >>>>> +{ >>>>> + struct mt6360_tcpc_info *mti = platform_get_drvdata(pdev); >>>>> + >>>>> + tcpci_unregister_port(mti->tcpci); >>>> >>>> That leaves interrupts enabled, which might be racy >>>> because interrupts are still enabled here. >>> M..., yes, it will cause the race condition during module remove. >>> I'll add disable_irq before tcpci unregister to prevent it. >> >> Or just set TCPC_ALERT_MASK to 0, as in tcpci.c. > Both are right, Thx. I'll choose one. > > BTW, it seems enum typec_cc_status is used by tcpci.h. > If I don't include tcpm.h, it will raise a warning during the compile time. Ok, thanks for the note (that means tcpci.h should include linux/usb/tcpm.h, really). Guenter
diff --git a/drivers/usb/typec/tcpm/Kconfig b/drivers/usb/typec/tcpm/Kconfig index fa3f393..58a64e1 100644 --- a/drivers/usb/typec/tcpm/Kconfig +++ b/drivers/usb/typec/tcpm/Kconfig @@ -27,6 +27,14 @@ config TYPEC_RT1711H Type-C Port Controller Manager to provide USB PD and USB Type-C functionalities. +config TYPEC_MT6360 + tristate "Mediatek MT6360 Type-C driver" + depends on MFD_MT6360 + help + Mediatek MT6360 is a multi-functional IC that includes + USB Type-C. It works with Type-C Port Controller Manager + to provide USB PD and USB Type-C functionalities. + endif # TYPEC_TCPCI config TYPEC_FUSB302 diff --git a/drivers/usb/typec/tcpm/Makefile b/drivers/usb/typec/tcpm/Makefile index a5ff6c8..7592ccb 100644 --- a/drivers/usb/typec/tcpm/Makefile +++ b/drivers/usb/typec/tcpm/Makefile @@ -5,3 +5,4 @@ obj-$(CONFIG_TYPEC_WCOVE) += typec_wcove.o typec_wcove-y := wcove.o obj-$(CONFIG_TYPEC_TCPCI) += tcpci.o obj-$(CONFIG_TYPEC_RT1711H) += tcpci_rt1711h.o +obj-$(CONFIG_TYPEC_MT6360) += tcpci_mt6360.o diff --git a/drivers/usb/typec/tcpm/tcpci_mt6360.c b/drivers/usb/typec/tcpm/tcpci_mt6360.c new file mode 100644 index 00000000..6a28193 --- /dev/null +++ b/drivers/usb/typec/tcpm/tcpci_mt6360.c @@ -0,0 +1,212 @@ +// SPDX-License-Identifier: GPL-2.0-only +// +// Copyright (C) 2020 MediaTek Inc. +// +// Author: ChiYuan Huang <cy_huang@richtek.com> + +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/usb/tcpm.h> + +#include "tcpci.h" + +#define MT6360_REG_VCONNCTRL1 0x8C +#define MT6360_REG_MODECTRL2 0x8F +#define MT6360_REG_SWRESET 0xA0 +#define MT6360_REG_DEBCTRL1 0xA1 +#define MT6360_REG_DRPCTRL1 0xA2 +#define MT6360_REG_DRPCTRL2 0xA3 +#define MT6360_REG_I2CTORST 0xBF +#define MT6360_REG_RXCTRL2 0xCF +#define MT6360_REG_CTDCTRL2 0xEC + +/* MT6360_REG_VCONNCTRL1 */ +#define MT6360_VCONNCL_ENABLE BIT(0) +/* MT6360_REG_RXCTRL2 */ +#define MT6360_OPEN40M_ENABLE BIT(7) +/* MT6360_REG_CTDCTRL2 */ +#define MT6360_RPONESHOT_ENABLE BIT(6) + +struct mt6360_tcpc_info { + struct tcpci_data tdata; + struct tcpci *tcpci; + struct device *dev; + int irq; +}; + +static inline int mt6360_tcpc_read16(struct regmap *regmap, + unsigned int reg, u16 *val) +{ + return regmap_raw_read(regmap, reg, val, sizeof(u16)); +} + +static inline int mt6360_tcpc_write16(struct regmap *regmap, + unsigned int reg, u16 val) +{ + return regmap_raw_write(regmap, reg, &val, sizeof(u16)); +} + +static int mt6360_tcpc_init(struct tcpci *tcpci, struct tcpci_data *tdata) +{ + struct regmap *regmap = tdata->regmap; + int ret; + + ret = regmap_write(regmap, MT6360_REG_SWRESET, 0x01); + if (ret) + return ret; + + /* after reset command, wait 1~2ms to wait IC action */ + usleep_range(1000, 2000); + + /* write all alert to masked */ + ret = mt6360_tcpc_write16(regmap, TCPC_ALERT_MASK, 0); + if (ret) + return ret; + + /* config I2C timeout reset enable , and timeout to 200ms */ + ret = regmap_write(regmap, MT6360_REG_I2CTORST, 0x8F); + if (ret) + return ret; + + /* config CC Detect Debounce : 26.7*val us */ + ret = regmap_write(regmap, MT6360_REG_DEBCTRL1, 0x10); + if (ret) + return ret; + + /* DRP Toggle Cycle : 51.2 + 6.4*val ms */ + ret = regmap_write(regmap, MT6360_REG_DRPCTRL1, 4); + if (ret) + return ret; + + /* DRP Duyt Ctrl : dcSRC: /1024 */ + ret = mt6360_tcpc_write16(regmap, MT6360_REG_DRPCTRL2, 330); + if (ret) + return ret; + + /* Enable VCONN Current Limit function */ + ret = regmap_update_bits(regmap, MT6360_REG_VCONNCTRL1, MT6360_VCONNCL_ENABLE, + MT6360_VCONNCL_ENABLE); + if (ret) + return ret; + + /* Enable cc open 40ms when pmic send vsysuv signal */ + ret = regmap_update_bits(regmap, MT6360_REG_RXCTRL2, MT6360_OPEN40M_ENABLE, + MT6360_OPEN40M_ENABLE); + if (ret) + return ret; + + /* Enable Rpdet oneshot detection */ + ret = regmap_update_bits(regmap, MT6360_REG_CTDCTRL2, MT6360_RPONESHOT_ENABLE, + MT6360_RPONESHOT_ENABLE); + if (ret) + return ret; + + /* Set shipping mode off, AUTOIDLE on */ + return regmap_write(regmap, MT6360_REG_MODECTRL2, 0x7A); +} + +static irqreturn_t mt6360_irq(int irq, void *dev_id) +{ + struct mt6360_tcpc_info *mti = dev_id; + + return tcpci_irq(mti->tcpci); +} + +static int mt6360_tcpc_probe(struct platform_device *pdev) +{ + struct mt6360_tcpc_info *mti; + int ret; + + mti = devm_kzalloc(&pdev->dev, sizeof(*mti), GFP_KERNEL); + if (!mti) + return -ENOMEM; + + mti->dev = &pdev->dev; + + mti->tdata.regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!mti->tdata.regmap) { + dev_err(&pdev->dev, "Failed to get parent regmap\n"); + return -ENODEV; + } + + mti->irq = platform_get_irq_byname(pdev, "PD_IRQB"); + if (mti->irq < 0) { + dev_err(&pdev->dev, "Failed to get PD_IRQB irq\n"); + return mti->irq; + } + + mti->tdata.init = mt6360_tcpc_init; + mti->tcpci = tcpci_register_port(&pdev->dev, &mti->tdata); + if (IS_ERR_OR_NULL(mti->tcpci)) { + dev_err(&pdev->dev, "Failed to register tcpci port\n"); + return PTR_ERR(mti->tcpci); + } + + ret = devm_request_threaded_irq(mti->dev, mti->irq, NULL, mt6360_irq, IRQF_ONESHOT, + dev_name(&pdev->dev), mti); + if (ret) { + dev_err(mti->dev, "Failed to register irq\n"); + tcpci_unregister_port(mti->tcpci); + return ret; + } + + device_init_wakeup(&pdev->dev, true); + platform_set_drvdata(pdev, mti); + + return 0; +} + +static int mt6360_tcpc_remove(struct platform_device *pdev) +{ + struct mt6360_tcpc_info *mti = platform_get_drvdata(pdev); + + tcpci_unregister_port(mti->tcpci); + return 0; +} + +static int __maybe_unused mt6360_tcpc_suspend(struct device *dev) +{ + struct mt6360_tcpc_info *mti = dev_get_drvdata(dev); + + if (device_may_wakeup(dev)) + enable_irq_wake(mti->irq); + + return 0; +} + +static int __maybe_unused mt6360_tcpc_resume(struct device *dev) +{ + struct mt6360_tcpc_info *mti = dev_get_drvdata(dev); + + if (device_may_wakeup(dev)) + disable_irq_wake(mti->irq); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(mt6360_tcpc_pm_ops, mt6360_tcpc_suspend, mt6360_tcpc_resume); + +static const struct of_device_id __maybe_unused mt6360_tcpc_of_id[] = { + { .compatible = "mediatek,mt6360-tcpc", }, + {}, +}; +MODULE_DEVICE_TABLE(of, mt6360_tcpc_of_id); + +static struct platform_driver mt6360_tcpc_driver = { + .driver = { + .name = "mt6360-tcpc", + .pm = &mt6360_tcpc_pm_ops, + .of_match_table = mt6360_tcpc_of_id, + }, + .probe = mt6360_tcpc_probe, + .remove = mt6360_tcpc_remove, +}; +module_platform_driver(mt6360_tcpc_driver); + +MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>"); +MODULE_DESCRIPTION("MT6360 USB Type-C Port Controller Interface Driver"); +MODULE_LICENSE("GPL v2");