From: Frank Li <Frank.Li@nxp.com> To: frank.li@nxp.com Cc: alexandre.belloni@bootlin.com, conor.culhane@silvaco.com, devicetree@vger.kernel.org, gregkh@linuxfoundation.org, ilpo.jarvinen@linux.intel.com, imx@lists.linux.dev, jirislaby@kernel.org, joe@perches.com, krzysztof.kozlowski+dt@linaro.org, krzysztof.kozlowski@linaro.org, linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, miquel.raynal@bootlin.com, robh@kernel.org, zbigniew.lukwinski@linux.intel.com Subject: [PATCH v8 7/8] i3c: add API i3c_dev_gettstatus_format1() to get target device status Date: Thu, 8 Feb 2024 12:01:16 -0500 [thread overview] Message-ID: <20240208170117.798357-8-Frank.Li@nxp.com> (raw) In-Reply-To: <20240208170117.798357-1-Frank.Li@nxp.com> I3C standard 5.1.9.3.15 Get Device Status (GETSTATUS): Get request for one I3C Target Device to return its current status. Add API to fetch it with format1. Signed-off-by: Frank Li <Frank.Li@nxp.com> --- drivers/i3c/device.c | 24 ++++++++++++++++++++++++ drivers/i3c/internals.h | 1 + drivers/i3c/master.c | 26 ++++++++++++++++++++++++++ include/linux/i3c/device.h | 1 + 4 files changed, 52 insertions(+) diff --git a/drivers/i3c/device.c b/drivers/i3c/device.c index 1a6a8703dbc3a..aa26cf50ab9c6 100644 --- a/drivers/i3c/device.c +++ b/drivers/i3c/device.c @@ -196,6 +196,30 @@ void i3c_device_free_ibi(struct i3c_device *dev) } EXPORT_SYMBOL_GPL(i3c_device_free_ibi); +/** + * i3c_device_getstatus_format1() - Get device status with format 1. + * @dev: device for which you want to get status. + * @status: I3C status format 1 + * + * Return: 0 in case of success, a negative error core otherwise. + */ +int i3c_device_getstatus_format1(struct i3c_device *dev, u16 *status) +{ + int ret = -EINVAL; + + if (!status) + return -EINVAL; + + i3c_bus_normaluse_lock(dev->bus); + if (dev->desc) + ret = i3c_dev_getstatus_format1_locked(dev->desc, status); + + i3c_bus_normaluse_unlock(dev->bus); + + return ret; +} +EXPORT_SYMBOL_GPL(i3c_device_getstatus_format1); + /** * i3cdev_to_dev() - Returns the device embedded in @i3cdev * @i3cdev: I3C device diff --git a/drivers/i3c/internals.h b/drivers/i3c/internals.h index 908a807badaf9..976ad26ca79c2 100644 --- a/drivers/i3c/internals.h +++ b/drivers/i3c/internals.h @@ -24,4 +24,5 @@ int i3c_dev_enable_ibi_locked(struct i3c_dev_desc *dev); int i3c_dev_request_ibi_locked(struct i3c_dev_desc *dev, const struct i3c_ibi_setup *req); void i3c_dev_free_ibi_locked(struct i3c_dev_desc *dev); +int i3c_dev_getstatus_format1_locked(struct i3c_dev_desc *dev, u16 *status); #endif /* I3C_INTERNAL_H */ diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c index 3afa530c5e322..ff61a218bcc6d 100644 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -2988,6 +2988,32 @@ void i3c_dev_free_ibi_locked(struct i3c_dev_desc *dev) dev->ibi = NULL; } +int i3c_dev_getstatus_format1_locked(struct i3c_dev_desc *dev, u16 *status) +{ + struct i3c_master_controller *master = i3c_dev_get_master(dev); + struct i3c_ccc_getstatus *format1; + struct i3c_ccc_cmd_dest dest; + struct i3c_ccc_cmd cmd; + int ret; + + format1 = i3c_ccc_cmd_dest_init(&dest, dev->info.dyn_addr, sizeof(*format1)); + if (!format1) + return -ENOMEM; + + i3c_ccc_cmd_init(&cmd, true, I3C_CCC_GETSTATUS, &dest, 1); + + ret = i3c_master_send_ccc_cmd_locked(master, &cmd); + if (ret) + goto out; + + *status = be16_to_cpu(format1->status); + +out: + i3c_ccc_cmd_dest_cleanup(&dest); + + return ret; +} + static int __init i3c_init(void) { int res; diff --git a/include/linux/i3c/device.h b/include/linux/i3c/device.h index e119f11948efe..66920045ff042 100644 --- a/include/linux/i3c/device.h +++ b/include/linux/i3c/device.h @@ -345,4 +345,5 @@ void i3c_device_free_ibi(struct i3c_device *dev); int i3c_device_enable_ibi(struct i3c_device *dev); int i3c_device_disable_ibi(struct i3c_device *dev); +int i3c_device_getstatus_format1(struct i3c_device *dev, u16 *status); #endif /* I3C_DEV_H */ -- 2.34.1
WARNING: multiple messages have this Message-ID (diff)
From: Frank Li <Frank.Li@nxp.com> To: frank.li@nxp.com Cc: alexandre.belloni@bootlin.com, conor.culhane@silvaco.com, devicetree@vger.kernel.org, gregkh@linuxfoundation.org, ilpo.jarvinen@linux.intel.com, imx@lists.linux.dev, jirislaby@kernel.org, joe@perches.com, krzysztof.kozlowski+dt@linaro.org, krzysztof.kozlowski@linaro.org, linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, miquel.raynal@bootlin.com, robh@kernel.org, zbigniew.lukwinski@linux.intel.com Subject: [PATCH v8 7/8] i3c: add API i3c_dev_gettstatus_format1() to get target device status Date: Thu, 8 Feb 2024 12:01:16 -0500 [thread overview] Message-ID: <20240208170117.798357-8-Frank.Li@nxp.com> (raw) In-Reply-To: <20240208170117.798357-1-Frank.Li@nxp.com> I3C standard 5.1.9.3.15 Get Device Status (GETSTATUS): Get request for one I3C Target Device to return its current status. Add API to fetch it with format1. Signed-off-by: Frank Li <Frank.Li@nxp.com> --- drivers/i3c/device.c | 24 ++++++++++++++++++++++++ drivers/i3c/internals.h | 1 + drivers/i3c/master.c | 26 ++++++++++++++++++++++++++ include/linux/i3c/device.h | 1 + 4 files changed, 52 insertions(+) diff --git a/drivers/i3c/device.c b/drivers/i3c/device.c index 1a6a8703dbc3a..aa26cf50ab9c6 100644 --- a/drivers/i3c/device.c +++ b/drivers/i3c/device.c @@ -196,6 +196,30 @@ void i3c_device_free_ibi(struct i3c_device *dev) } EXPORT_SYMBOL_GPL(i3c_device_free_ibi); +/** + * i3c_device_getstatus_format1() - Get device status with format 1. + * @dev: device for which you want to get status. + * @status: I3C status format 1 + * + * Return: 0 in case of success, a negative error core otherwise. + */ +int i3c_device_getstatus_format1(struct i3c_device *dev, u16 *status) +{ + int ret = -EINVAL; + + if (!status) + return -EINVAL; + + i3c_bus_normaluse_lock(dev->bus); + if (dev->desc) + ret = i3c_dev_getstatus_format1_locked(dev->desc, status); + + i3c_bus_normaluse_unlock(dev->bus); + + return ret; +} +EXPORT_SYMBOL_GPL(i3c_device_getstatus_format1); + /** * i3cdev_to_dev() - Returns the device embedded in @i3cdev * @i3cdev: I3C device diff --git a/drivers/i3c/internals.h b/drivers/i3c/internals.h index 908a807badaf9..976ad26ca79c2 100644 --- a/drivers/i3c/internals.h +++ b/drivers/i3c/internals.h @@ -24,4 +24,5 @@ int i3c_dev_enable_ibi_locked(struct i3c_dev_desc *dev); int i3c_dev_request_ibi_locked(struct i3c_dev_desc *dev, const struct i3c_ibi_setup *req); void i3c_dev_free_ibi_locked(struct i3c_dev_desc *dev); +int i3c_dev_getstatus_format1_locked(struct i3c_dev_desc *dev, u16 *status); #endif /* I3C_INTERNAL_H */ diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c index 3afa530c5e322..ff61a218bcc6d 100644 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -2988,6 +2988,32 @@ void i3c_dev_free_ibi_locked(struct i3c_dev_desc *dev) dev->ibi = NULL; } +int i3c_dev_getstatus_format1_locked(struct i3c_dev_desc *dev, u16 *status) +{ + struct i3c_master_controller *master = i3c_dev_get_master(dev); + struct i3c_ccc_getstatus *format1; + struct i3c_ccc_cmd_dest dest; + struct i3c_ccc_cmd cmd; + int ret; + + format1 = i3c_ccc_cmd_dest_init(&dest, dev->info.dyn_addr, sizeof(*format1)); + if (!format1) + return -ENOMEM; + + i3c_ccc_cmd_init(&cmd, true, I3C_CCC_GETSTATUS, &dest, 1); + + ret = i3c_master_send_ccc_cmd_locked(master, &cmd); + if (ret) + goto out; + + *status = be16_to_cpu(format1->status); + +out: + i3c_ccc_cmd_dest_cleanup(&dest); + + return ret; +} + static int __init i3c_init(void) { int res; diff --git a/include/linux/i3c/device.h b/include/linux/i3c/device.h index e119f11948efe..66920045ff042 100644 --- a/include/linux/i3c/device.h +++ b/include/linux/i3c/device.h @@ -345,4 +345,5 @@ void i3c_device_free_ibi(struct i3c_device *dev); int i3c_device_enable_ibi(struct i3c_device *dev); int i3c_device_disable_ibi(struct i3c_device *dev); +int i3c_device_getstatus_format1(struct i3c_device *dev, u16 *status); #endif /* I3C_DEV_H */ -- 2.34.1 -- linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c
next prev parent reply other threads:[~2024-02-08 17:02 UTC|newest] Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-02-08 17:01 [PATCH v8 0/8] I3C target mode support Frank Li 2024-02-08 17:01 ` Frank Li 2024-02-08 17:01 ` [PATCH v8 1/8] i3c: add " Frank Li 2024-02-08 17:01 ` Frank Li 2024-02-08 17:01 ` [PATCH v8 2/8] dt-bindings: i3c: svc: add proptery mode Frank Li 2024-02-08 17:01 ` Frank Li 2024-02-08 17:01 ` [PATCH v8 3/8] Documentation: i3c: Add I3C target mode controller and function Frank Li 2024-02-08 17:01 ` Frank Li 2024-02-08 17:01 ` [PATCH v8 4/8] i3c: svc: Add svc-i3c-main.c and svc-i3c.h Frank Li 2024-02-08 17:01 ` Frank Li 2024-02-08 17:01 ` [PATCH v8 5/8] i3c: target: add svc target controller support Frank Li 2024-02-08 17:01 ` Frank Li 2024-03-06 16:06 ` Joshua Yeong 2024-03-06 16:06 ` Joshua Yeong 2024-02-08 17:01 ` [PATCH v8 6/8] i3c: target: func: add tty driver Frank Li 2024-02-08 17:01 ` Frank Li 2024-02-08 17:01 ` Frank Li [this message] 2024-02-08 17:01 ` [PATCH v8 7/8] i3c: add API i3c_dev_gettstatus_format1() to get target device status Frank Li 2024-02-08 17:01 ` [PATCH v8 8/8] tty: i3c: add TTY over I3C master support Frank Li 2024-02-08 17:01 ` Frank Li
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