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([213.139.62.222]) by smtp.gmail.com with ESMTPSA id k6-20020adfe3c6000000b003196e992567sm6236955wrm.115.2023.09.23.00.40.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 23 Sep 2023 00:40:47 -0700 (PDT) From: Abdel Alkuor To: heikki.krogerus@linux.intel.com, krzysztof.kozlowski+dt@linaro.org, bryan.odonoghue@linaro.org Cc: gregkh@linuxfoundation.org, robh+dt@kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, conor+dt@kernel.org, ryan.eleceng@gmail.com, Abdel Alkuor Subject: [PATCH v6 08/14] USB: typec: Add interrupt support for TPS25750 Date: Sat, 23 Sep 2023 03:39:53 -0400 Message-Id: <20230923073959.86660-9-alkuor@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230923073959.86660-1-alkuor@gmail.com> References: <20230923073959.86660-1-alkuor@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Abdel Alkuor tps25750 event registers structure is different than tps6598x's, tps25750 has 11 bytes of events which are read at once where tps6598x has two event registers of 8 bytes each which are read separately. Likewise MASK event registers. Also, not all events are supported in both devices. Update tps6598x interrupt handler to accommodate tps25750 interrupt Signed-off-by: Abdel Alkuor --- Changes in v6: - Create tipd callbacks factory=20 Changes in v5: - Incorporating tps25750 into tps6598x driver drivers/usb/typec/tipd/core.c | 102 +++++++++++++++++++++++++++------- 1 file changed, 83 insertions(+), 19 deletions(-) diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c index 56ffffe225f2..cde52afe5097 100644 --- a/drivers/usb/typec/tipd/core.c +++ b/drivers/usb/typec/tipd/core.c @@ -101,6 +101,14 @@ static const char *const modes[] =3D { /* Unrecognized commands will be replaced with "!CMD" */ #define INVALID_CMD(_cmd_) (_cmd_ =3D=3D 0x444d4321) =20 +struct tps6598x; + +struct tipd_data { + irq_handler_t irq_handler; + int (*read_events)(struct tps6598x *tps, void *events); + int (*clear_events)(struct tps6598x *tps, void *events); +}; + struct tps6598x { struct device *dev; struct regmap *regmap; @@ -118,9 +126,11 @@ struct tps6598x { enum power_supply_usb_type usb_type; =20 int wakeup; + u32 status; /* status reg */ u16 pwr_status; struct delayed_work wq_poll; - irq_handler_t irq_handler; + + struct tipd_data cb; }; =20 static enum power_supply_property tps6598x_psy_props[] =3D { @@ -500,6 +510,32 @@ static void tps6598x_handle_plug_event(struct tps6598x= *tps, u32 status) } } =20 +static int tps6598x_read_events(struct tps6598x *tps, void *events) +{ + uint64_t *e =3D events; + + return tps6598x_read64(tps, TPS_REG_INT_EVENT1, &e[0]) | + tps6598x_read64(tps, TPS_REG_INT_EVENT2, &e[1]); +} + +static int tps6598x_clear_events(struct tps6598x *tps, void *events) +{ + uint64_t *e =3D events; + + return tps6598x_write64(tps, TPS_REG_INT_CLEAR1, e[0]) | + tps6598x_write64(tps, TPS_REG_INT_CLEAR2, e[1]); +} + +static int tps25750_read_events(struct tps6598x *tps, void *events) +{ + return tps6598x_block_read(tps, TPS_REG_INT_EVENT1, events, 11); +} + +static int tps25750_clear_events(struct tps6598x *tps, void *events) +{ + return tps6598x_block_write(tps, TPS_REG_INT_CLEAR1, events, 11); +} + static irqreturn_t cd321x_interrupt(int irq, void *data) { struct tps6598x *tps =3D data; @@ -545,50 +581,60 @@ static irqreturn_t cd321x_interrupt(int irq, void *da= ta) return IRQ_NONE; } =20 +static bool tps6598x_has_role_changed(struct tps6598x *tps, u32 status) +{ + status ^=3D tps->status; + + return status & (TPS_STATUS_PORTROLE | TPS_STATUS_DATAROLE); +} + static irqreturn_t tps6598x_interrupt(int irq, void *data) { struct tps6598x *tps =3D data; - u64 event1 =3D 0; - u64 event2 =3D 0; + u64 event[2] =3D { }; u32 status; int ret; =20 mutex_lock(&tps->lock); =20 - ret =3D tps6598x_read64(tps, TPS_REG_INT_EVENT1, &event1); - ret |=3D tps6598x_read64(tps, TPS_REG_INT_EVENT2, &event2); + ret =3D tps->cb.read_events(tps, event); if (ret) { dev_err(tps->dev, "%s: failed to read events\n", __func__); goto err_unlock; } - trace_tps6598x_irq(event1, event2); + trace_tps6598x_irq(event[0], event[1]); =20 - if (!(event1 | event2)) + if (!(event[0] | event[1])) goto err_unlock; =20 if (!tps6598x_read_status(tps, &status)) goto err_clear_ints; =20 - if ((event1 | event2) & TPS_REG_INT_POWER_STATUS_UPDATE) + if ((event[0] | event[1]) & TPS_REG_INT_POWER_STATUS_UPDATE) if (!tps6598x_read_power_status(tps)) goto err_clear_ints; =20 - if ((event1 | event2) & TPS_REG_INT_DATA_STATUS_UPDATE) + if ((event[0] | event[1]) & TPS_REG_INT_DATA_STATUS_UPDATE) if (!tps6598x_read_data_status(tps)) goto err_clear_ints; =20 - /* Handle plug insert or removal */ - if ((event1 | event2) & TPS_REG_INT_PLUG_EVENT) + /* + * data/port roles could be updated independently after + * a plug event. Therefore, we need to check + * for pr/dr status change to set TypeC dr/pr accordingly. + */ + if ((event[0] | event[1]) & TPS_REG_INT_PLUG_EVENT || + tps6598x_has_role_changed(tps, status)) tps6598x_handle_plug_event(tps, status); =20 + tps->status =3D status; err_clear_ints: - tps6598x_write64(tps, TPS_REG_INT_CLEAR1, event1); - tps6598x_write64(tps, TPS_REG_INT_CLEAR2, event2); + tps->cb.clear_events(tps, event); =20 err_unlock: mutex_unlock(&tps->lock); =20 - if (event1 | event2) + if (event[0] | event[1]) return IRQ_HANDLED; return IRQ_NONE; } @@ -600,7 +646,7 @@ static void tps6598x_poll_work(struct work_struct *work) struct tps6598x *tps =3D container_of(to_delayed_work(work), struct tps6598x, wq_poll); =20 - tps->irq_handler(0, tps); + tps->cb.irq_handler(0, tps); queue_delayed_work(system_power_efficient_wq, &tps->wq_poll, msecs_to_jiffies(POLL_INTERVAL)); } @@ -967,9 +1013,24 @@ static int tps25750_apply_patch(struct tps6598x *tps) return 0; }; =20 +static const struct tipd_data cd321x_data =3D { + .irq_handler =3D cd321x_interrupt, +}; + +static const struct tipd_data tps6598x_data =3D { + .irq_handler =3D tps6598x_interrupt, + .read_events =3D tps6598x_read_events, + .clear_events =3D tps6598x_clear_events, +}; + +static const struct tipd_data tps25750_data =3D { + .irq_handler =3D tps6598x_interrupt, + .read_events =3D tps25750_read_events, + .clear_events =3D tps25750_clear_events, +}; + static int tps6598x_probe(struct i2c_client *client) { - irq_handler_t irq_handler =3D tps6598x_interrupt; struct device_node *np =3D client->dev.of_node; struct typec_capability typec_cap =3D { }; struct tps6598x *tps; @@ -1017,15 +1078,18 @@ static int tps6598x_probe(struct i2c_client *client) APPLE_CD_REG_INT_DATA_STATUS_UPDATE | APPLE_CD_REG_INT_PLUG_EVENT; =20 - irq_handler =3D cd321x_interrupt; + tps->cb =3D cd321x_data; } else { + if (is_tps25750) + tps->cb =3D tps25750_data; + else + tps->cb =3D tps6598x_data; /* Enable power status, data status and plug event interrupts */ mask1 =3D TPS_REG_INT_POWER_STATUS_UPDATE | TPS_REG_INT_DATA_STATUS_UPDATE | TPS_REG_INT_PLUG_EVENT; } =20 - tps->irq_handler =3D irq_handler; /* Make sure the controller has application firmware running */ ret =3D tps6598x_check_mode(tps); if (ret < 0) @@ -1125,7 +1189,7 @@ static int tps6598x_probe(struct i2c_client *client) =20 if (client->irq) { ret =3D devm_request_threaded_irq(&client->dev, client->irq, NULL, - irq_handler, + tps->cb.irq_handler, IRQF_SHARED | IRQF_ONESHOT, dev_name(&client->dev), tps); } else { --=20 2.34.1