diff options
Diffstat (limited to 'meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-scmi/0007-firmware-arm_scmi-Add-per-device-transport-private-i.patch')
| -rw-r--r-- | meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-scmi/0007-firmware-arm_scmi-Add-per-device-transport-private-i.patch | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-scmi/0007-firmware-arm_scmi-Add-per-device-transport-private-i.patch b/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-scmi/0007-firmware-arm_scmi-Add-per-device-transport-private-i.patch new file mode 100644 index 00000000..1c82530f --- /dev/null +++ b/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-scmi/0007-firmware-arm_scmi-Add-per-device-transport-private-i.patch @@ -0,0 +1,92 @@ +From 9d5366d4765fb60cafa31c2b46cd80d284c847bb Mon Sep 17 00:00:00 2001 +From: Peter Hilber <peter.hilber@opensynergy.com> +Date: Thu, 5 Nov 2020 22:21:13 +0100 +Subject: [PATCH] firmware: arm_scmi: Add per-device transport private info + +The scmi-virtio transport will link a supplier device to the arm-scmi +device in the link_supplier() op. The transport should then save a +pointer to the linked device. + +To enable this, add a transport private info to the scmi_info. (The +scmi_info is already reachable through the arm-scmi device driver_data.) + +Signed-off-by: Peter Hilber <peter.hilber@opensynergy.com> +Signed-off-by: Vasyl Vavrychuk <vasyl.vavrychuk@opensynergy.com> +--- + drivers/firmware/arm_scmi/common.h | 2 ++ + drivers/firmware/arm_scmi/driver.c | 35 ++++++++++++++++++++++++++++++ + 2 files changed, 37 insertions(+) + +diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h +index 2f55ac71555a..ec9fd7fce3c7 100644 +--- a/drivers/firmware/arm_scmi/common.h ++++ b/drivers/firmware/arm_scmi/common.h +@@ -262,6 +262,8 @@ extern const struct scmi_desc scmi_mailbox_desc; + extern const struct scmi_desc scmi_smc_desc; + #endif + ++int scmi_set_transport_info(struct device *dev, void *transport_info); ++void *scmi_get_transport_info(struct device *dev); + void scmi_rx_callback(struct scmi_chan_info *cinfo, u32 msg_hdr); + void scmi_free_channel(struct scmi_chan_info *cinfo, struct idr *idr, int id); + +diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c +index 0b70f9ef9477..93ce17bb4079 100644 +--- a/drivers/firmware/arm_scmi/driver.c ++++ b/drivers/firmware/arm_scmi/driver.c +@@ -84,6 +84,7 @@ struct scmi_xfers_info { + * @rx_idr: IDR object to map protocol id to Rx channel info pointer + * @protocols_imp: List of protocols implemented, currently maximum of + * MAX_PROTOCOLS_IMP elements allocated by the base protocol ++ * @transport_info: Transport private info + * @node: List head + * @users: Number of users of this instance + */ +@@ -97,6 +98,7 @@ struct scmi_info { + struct idr tx_idr; + struct idr rx_idr; + u8 *protocols_imp; ++ void *transport_info; + struct list_head node; + int users; + }; +@@ -315,6 +317,39 @@ void scmi_rx_callback(struct scmi_chan_info *cinfo, u32 msg_hdr) + } + } + ++/** ++ * scmi_set_transport_info() - Set transport private info ++ * ++ * @dev: SCMI instance device ++ * @transport_info: transport private info ++ * ++ * Return: 0 on success, otherwise error. ++ */ ++int scmi_set_transport_info(struct device *dev, void *transport_info) ++{ ++ struct scmi_info *info = dev_get_drvdata(dev); ++ ++ if (!info) ++ return -EBADR; ++ ++ info->transport_info = transport_info; ++ return 0; ++} ++ ++/** ++ * scmi_get_transport_info() - Get transport private info ++ * ++ * @dev: SCMI instance device ++ * ++ * Return: transport private info on success, otherwise NULL. ++ */ ++void *scmi_get_transport_info(struct device *dev) ++{ ++ struct scmi_info *info = dev_get_drvdata(dev); ++ ++ return info ? info->transport_info : NULL; ++} ++ + /** + * scmi_xfer_put() - Release a transmit message + * |