From: Frank Li <Frank.Li@nxp.com> To: miquel.raynal@bootlin.com Cc: Frank.Li@nxp.com, alexandre.belloni@bootlin.com, conor.culhane@silvaco.com, imx@lists.linux.dev, joe@perches.com, linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 6/6] i3c: add API i3c_dev_gettstatus_format1() to get target device status Date: Wed, 18 Oct 2023 16:59:29 -0400 [thread overview] Message-ID: <20231018205929.3435110-7-Frank.Li@nxp.com> (raw) In-Reply-To: <20231018205929.3435110-1-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 ed5e27cd20811..6a16ebdd180b5 100644 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -2924,6 +2924,32 @@ 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 ef6217da8253b..5f511bd400f11 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
WARNING: multiple messages have this Message-ID (diff)
From: Frank Li <Frank.Li@nxp.com> To: miquel.raynal@bootlin.com Cc: Frank.Li@nxp.com, alexandre.belloni@bootlin.com, conor.culhane@silvaco.com, imx@lists.linux.dev, joe@perches.com, linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 6/6] i3c: add API i3c_dev_gettstatus_format1() to get target device status Date: Wed, 18 Oct 2023 16:59:29 -0400 [thread overview] Message-ID: <20231018205929.3435110-7-Frank.Li@nxp.com> (raw) In-Reply-To: <20231018205929.3435110-1-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 ed5e27cd20811..6a16ebdd180b5 100644 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -2924,6 +2924,32 @@ 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 ef6217da8253b..5f511bd400f11 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
next prev parent reply other threads:[~2023-10-18 21:00 UTC|newest] Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-10-18 20:59 [PATCH v2 0/6] i3c: master: some improvment for i3c master Frank Li 2023-10-18 20:59 ` Frank Li 2023-10-18 20:59 ` [PATCH v2 1/6] i3c: master: add enable(disable) hot join in sys entry Frank Li 2023-10-18 20:59 ` Frank Li 2023-10-20 8:55 ` Zbigniew, Lukwinski 2023-10-20 8:55 ` Zbigniew, Lukwinski 2023-10-20 13:45 ` Miquel Raynal 2023-10-20 13:45 ` Miquel Raynal 2023-10-20 14:20 ` Frank Li 2023-10-20 14:20 ` Frank Li 2023-10-20 14:33 ` Miquel Raynal 2023-10-20 14:33 ` Miquel Raynal 2023-10-20 16:24 ` Frank Li 2023-10-20 16:24 ` Frank Li [not found] ` <8a7ac52e-f102-6f5e-35ab-217e6ecc6ba5@linux.intel.com> 2023-10-20 20:25 ` Alexandre Belloni 2023-10-20 20:25 ` Alexandre Belloni 2023-10-20 20:36 ` Frank Li 2023-10-20 20:36 ` Frank Li 2023-10-20 20:42 ` Zbigniew, Lukwinski 2023-10-20 20:42 ` Zbigniew, Lukwinski 2023-11-05 15:36 ` Frank Li 2023-11-05 15:36 ` Frank Li 2023-10-18 20:59 ` [PATCH v2 2/6] i3c: master: svc: add hot join support Frank Li 2023-10-18 20:59 ` Frank Li 2023-10-18 20:59 ` [PATCH v2 3/6] i3c: add actual_len in i3c_priv_xfer Frank Li 2023-10-18 20:59 ` Frank Li 2023-10-18 20:59 ` [PATCH v2 4/6] i3c: svc: rename read_len as actual_len Frank Li 2023-10-18 20:59 ` Frank Li 2023-10-18 20:59 ` [PATCH v2 5/6] i3c: master: svc return actual transfer data len Frank Li 2023-10-18 20:59 ` Frank Li 2023-10-18 20:59 ` Frank Li [this message] 2023-10-18 20:59 ` [PATCH v2 6/6] i3c: add API i3c_dev_gettstatus_format1() to get target device status Frank Li 2023-10-18 22:58 [PATCH v2 2/6] i3c: master: svc: add hot join support kernel test robot 2023-10-19 1:23 ` kernel test robot 2023-10-19 1:23 ` kernel test robot
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