mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-01 06:33:07 +00:00
i.MX drivers update for 6.6:
- A series from NXP i.MX developers (Peng Fan, etc.) to update imx-scu and imx-scu-irq firmware drivers. - Add dedicated lockdep class for nested genpd locks to fix a lockdep warning in imx93-blk-ctrl driver. - A change from Rob to explicitly include correct DT headers for i.MX SoC drivers. - Use devm_platform_ioremap_resource() in imx-weim bus driver. -----BEGIN PGP SIGNATURE----- iQFIBAABCgAyFiEEFmJXigPl4LoGSz08UFdYWoewfM4FAmTYNCAUHHNoYXduZ3Vv QGtlcm5lbC5vcmcACgkQUFdYWoewfM7x+wgAsB65MMhY74a8pjuO0q1nJierjc46 of2ayxR8I1jXQK/3IUijBZpg+8bnQkhXiVK1uyzvLmUc28iw1y6B2dWec/hXRld8 mc516IWjGa0Re+dOeliKPFNWzj6TZRi3TmqKIfg5XIb0poBtxBiXm7tvjm1oYRQl ijkCqauOXJmK3yMMTQqxknGQG+B8wQDTPnbssk0A46ShD4RrYXmC3wjTEb27WoGk nw18XT5XpS+LomctRcqza3Bcdry6YPmI0hOt9Oy9db2sBtXbz+bf9tLGKztvfxGz 44R0+Rz/XncJHwRXGgUNR71ps0+WP55qKsqoTw/zHhkS2BPl8gMxhBtQbQ== =T2Uo -----END PGP SIGNATURE----- gpgsig -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEiK/NIGsWEZVxh/FrYKtH/8kJUicFAmTaT8sACgkQYKtH/8kJ UieFHQ//YrvUhNJjVtQeUcZ4s43MKKJsq7HNnki02ZRlIOdcG+vM7JzWe6PsRDbK 8jeV1tM3ZE67VBeIZU1+ELshebiU01VQY4ZobmGOPMajDFXZmu1Znzr8O6RASrmd u+aFhpTGleg4SQQ2avdaQIQ4gpw19ciellxCTx37Y/hae06nANXzFFTlnPO4qseW rzJzgh2h3Z1Gv/LdqtlfMAeI2aEQy/+hfKmZs4f20/Rs8wwH7lzrNLSUideY6cqt RM1nX3F97b+glRJ4siqRoUISVSW6naWkb5qZ+VZXN4e7xrczuV/1Sp2dqINWXxKp dR3WpOfb2V9sIGQOiAb8XSFBkxvDVG6ze6l2RkXA0szqpVBRMOTGshykMqt2I2tN 8Eeek9+XXZHZxNR6omFX4cvTjRW7hvhB0W35UdoZr1qteC8jV/H1DBYV3v8ri1d8 z17Y0JGBFrtQFBF/jq1yK0WND4RIb2aHYxrojDQ3/mtqsMailIuogwGpMQyhsCll nX2NeKpaKe3MwEtKPOSTkUD5k8TLBfDOn/fcoLRQ6Ys6fsBAcplJ+6Sp3Hv/mgWQ W9eWaeBAh0BllI66twAxeTKdy/1IsGpsLyNVDJliAExW3Z1ISPUMw6pI4M+H/QZY W+joqcvJYAAiOfIvRqQWvyt40I/2JYx6otsJKN4JB9Qlh3QRvxg= =2iHc -----END PGP SIGNATURE----- Merge tag 'imx-drivers-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into soc/drivers i.MX drivers update for 6.6: - A series from NXP i.MX developers (Peng Fan, etc.) to update imx-scu and imx-scu-irq firmware drivers. - Add dedicated lockdep class for nested genpd locks to fix a lockdep warning in imx93-blk-ctrl driver. - A change from Rob to explicitly include correct DT headers for i.MX SoC drivers. - Use devm_platform_ioremap_resource() in imx-weim bus driver. * tag 'imx-drivers-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: firmware: imx: scu-irq: support identifying SCU wakeup source from sysfs firmware: imx: scu-irq: enlarge the IMX_SC_IRQ_NUM_GROUP firmware: imx: scu-irq: add imx_scu_irq_get_status firmware: imx: scu-irq: fix RCU complaint after M4 partition reset firmware: imx: scu: use EOPNOTSUPP firmware: imx: scu: use soc name for soc_id firmware: imx: scu: increase RPC timeout firmware: imx: scu: change init level to subsys_initcall_sync soc: imx: Explicitly include correct DT includes bus: imx-weim: use devm_platform_ioremap_resource soc: imx: imx93-blk-ctrl: Add dedicated lockdep class for nested genpd locks Link: https://lore.kernel.org/r/20230813133354.847010-1-shawnguo@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann
commit
9fb9ae8061
10 changed files with 158 additions and 33 deletions
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@ -273,7 +273,7 @@ static int weim_probe(struct platform_device *pdev)
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return -ENOMEM;
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/* get the resource */
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base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
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base = devm_platform_ioremap_resource(pdev, 0);
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if (IS_ERR(base))
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return PTR_ERR(base);
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@ -1,6 +1,6 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2019 NXP
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* Copyright 2019,2023 NXP
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*
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* Implementation of the SCU IRQ functions using MU.
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*
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@ -9,12 +9,14 @@
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#include <dt-bindings/firmware/imx/rsrc.h>
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#include <linux/firmware/imx/ipc.h>
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#include <linux/firmware/imx/sci.h>
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#include <linux/kobject.h>
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#include <linux/mailbox_client.h>
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#include <linux/suspend.h>
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#include <linux/sysfs.h>
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#define IMX_SC_IRQ_FUNC_ENABLE 1
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#define IMX_SC_IRQ_FUNC_STATUS 2
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#define IMX_SC_IRQ_NUM_GROUP 4
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#define IMX_SC_IRQ_NUM_GROUP 9
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static u32 mu_resource_id;
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@ -40,63 +42,102 @@ struct imx_sc_msg_irq_enable {
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u8 enable;
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} __packed;
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struct scu_wakeup {
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u32 mask;
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u32 wakeup_src;
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bool valid;
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};
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/* Sysfs functions */
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static struct kobject *wakeup_obj;
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static ssize_t wakeup_source_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf);
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static struct kobj_attribute wakeup_source_attr =
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__ATTR(wakeup_src, 0660, wakeup_source_show, NULL);
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static struct scu_wakeup scu_irq_wakeup[IMX_SC_IRQ_NUM_GROUP];
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static struct imx_sc_ipc *imx_sc_irq_ipc_handle;
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static struct work_struct imx_sc_irq_work;
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static ATOMIC_NOTIFIER_HEAD(imx_scu_irq_notifier_chain);
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static BLOCKING_NOTIFIER_HEAD(imx_scu_irq_notifier_chain);
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int imx_scu_irq_register_notifier(struct notifier_block *nb)
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{
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return atomic_notifier_chain_register(
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return blocking_notifier_chain_register(
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&imx_scu_irq_notifier_chain, nb);
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}
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EXPORT_SYMBOL(imx_scu_irq_register_notifier);
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int imx_scu_irq_unregister_notifier(struct notifier_block *nb)
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{
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return atomic_notifier_chain_unregister(
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return blocking_notifier_chain_unregister(
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&imx_scu_irq_notifier_chain, nb);
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}
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EXPORT_SYMBOL(imx_scu_irq_unregister_notifier);
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static int imx_scu_irq_notifier_call_chain(unsigned long status, u8 *group)
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{
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return atomic_notifier_call_chain(&imx_scu_irq_notifier_chain,
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return blocking_notifier_call_chain(&imx_scu_irq_notifier_chain,
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status, (void *)group);
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}
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static void imx_scu_irq_work_handler(struct work_struct *work)
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{
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struct imx_sc_msg_irq_get_status msg;
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struct imx_sc_rpc_msg *hdr = &msg.hdr;
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u32 irq_status;
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int ret;
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u8 i;
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for (i = 0; i < IMX_SC_IRQ_NUM_GROUP; i++) {
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hdr->ver = IMX_SC_RPC_VERSION;
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hdr->svc = IMX_SC_RPC_SVC_IRQ;
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hdr->func = IMX_SC_IRQ_FUNC_STATUS;
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hdr->size = 2;
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if (scu_irq_wakeup[i].mask) {
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scu_irq_wakeup[i].valid = false;
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scu_irq_wakeup[i].wakeup_src = 0;
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}
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msg.data.req.resource = mu_resource_id;
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msg.data.req.group = i;
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ret = imx_scu_call_rpc(imx_sc_irq_ipc_handle, &msg, true);
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ret = imx_scu_irq_get_status(i, &irq_status);
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if (ret) {
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pr_err("get irq group %d status failed, ret %d\n",
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i, ret);
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return;
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}
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irq_status = msg.data.resp.status;
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if (!irq_status)
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continue;
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if (scu_irq_wakeup[i].mask & irq_status) {
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scu_irq_wakeup[i].valid = true;
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scu_irq_wakeup[i].wakeup_src = irq_status & scu_irq_wakeup[i].mask;
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} else {
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scu_irq_wakeup[i].wakeup_src = irq_status;
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}
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pm_system_wakeup();
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imx_scu_irq_notifier_call_chain(irq_status, &i);
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}
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}
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int imx_scu_irq_get_status(u8 group, u32 *irq_status)
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{
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struct imx_sc_msg_irq_get_status msg;
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struct imx_sc_rpc_msg *hdr = &msg.hdr;
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int ret;
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hdr->ver = IMX_SC_RPC_VERSION;
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hdr->svc = IMX_SC_RPC_SVC_IRQ;
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hdr->func = IMX_SC_IRQ_FUNC_STATUS;
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hdr->size = 2;
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msg.data.req.resource = mu_resource_id;
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msg.data.req.group = group;
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ret = imx_scu_call_rpc(imx_sc_irq_ipc_handle, &msg, true);
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if (ret)
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return ret;
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if (irq_status)
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*irq_status = msg.data.resp.status;
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return 0;
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}
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EXPORT_SYMBOL(imx_scu_irq_get_status);
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int imx_scu_irq_group_enable(u8 group, u32 mask, u8 enable)
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{
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struct imx_sc_msg_irq_enable msg;
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@ -121,6 +162,11 @@ int imx_scu_irq_group_enable(u8 group, u32 mask, u8 enable)
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pr_err("enable irq failed, group %d, mask %d, ret %d\n",
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group, mask, ret);
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if (enable)
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scu_irq_wakeup[group].mask |= mask;
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else
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scu_irq_wakeup[group].mask &= ~mask;
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return ret;
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}
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EXPORT_SYMBOL(imx_scu_irq_group_enable);
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@ -130,6 +176,25 @@ static void imx_scu_irq_callback(struct mbox_client *c, void *msg)
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schedule_work(&imx_sc_irq_work);
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}
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static ssize_t wakeup_source_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
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{
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int i;
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for (i = 0; i < IMX_SC_IRQ_NUM_GROUP; i++) {
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if (!scu_irq_wakeup[i].wakeup_src)
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continue;
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if (scu_irq_wakeup[i].valid)
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sprintf(buf, "Wakeup source group = %d, irq = 0x%x\n",
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i, scu_irq_wakeup[i].wakeup_src);
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else
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sprintf(buf, "Spurious SCU wakeup, group = %d, irq = 0x%x\n",
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i, scu_irq_wakeup[i].wakeup_src);
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}
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return strlen(buf);
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}
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int imx_scu_enable_general_irq_channel(struct device *dev)
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{
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struct of_phandle_args spec;
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@ -169,6 +234,25 @@ int imx_scu_enable_general_irq_channel(struct device *dev)
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mu_resource_id = IMX_SC_R_MU_0A + i;
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/* Create directory under /sysfs/firmware */
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wakeup_obj = kobject_create_and_add("scu_wakeup_source", firmware_kobj);
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if (!wakeup_obj) {
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ret = -ENOMEM;
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goto free_ch;
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}
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ret = sysfs_create_file(wakeup_obj, &wakeup_source_attr.attr);
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if (ret) {
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dev_err(dev, "Cannot create wakeup source src file......\n");
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kobject_put(wakeup_obj);
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goto free_ch;
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}
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return 0;
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free_ch:
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mbox_free_channel(ch);
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return ret;
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}
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EXPORT_SYMBOL(imx_scu_enable_general_irq_channel);
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@ -78,6 +78,22 @@ static int imx_scu_soc_id(void)
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return msg.data.resp.id;
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}
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static const char *imx_scu_soc_name(u32 id)
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{
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switch (id) {
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case 0x1:
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return "i.MX8QM";
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case 0x2:
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return "i.MX8QXP";
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case 0xe:
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return "i.MX8DXL";
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default:
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break;
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}
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return "NULL";
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}
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int imx_scu_soc_init(struct device *dev)
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{
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struct soc_device_attribute *soc_dev_attr;
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@ -113,9 +129,7 @@ int imx_scu_soc_init(struct device *dev)
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/* format soc_id value passed from SCU firmware */
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val = id & 0x1f;
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soc_dev_attr->soc_id = devm_kasprintf(dev, GFP_KERNEL, "0x%x", val);
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if (!soc_dev_attr->soc_id)
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return -ENOMEM;
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soc_dev_attr->soc_id = imx_scu_soc_name(val);
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/* format revision value passed from SCU firmware */
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val = (id >> 5) & 0xf;
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@ -20,7 +20,7 @@
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#include <linux/platform_device.h>
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#define SCU_MU_CHAN_NUM 8
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#define MAX_RX_TIMEOUT (msecs_to_jiffies(30))
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#define MAX_RX_TIMEOUT (msecs_to_jiffies(3000))
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struct imx_sc_chan {
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struct imx_sc_ipc *sc_ipc;
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@ -353,7 +353,12 @@ static struct platform_driver imx_scu_driver = {
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},
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.probe = imx_scu_probe,
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};
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builtin_platform_driver(imx_scu_driver);
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static int __init imx_scu_driver_init(void)
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{
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return platform_driver_register(&imx_scu_driver);
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}
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subsys_initcall_sync(imx_scu_driver_init);
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MODULE_AUTHOR("Dong Aisheng <aisheng.dong@nxp.com>");
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MODULE_DESCRIPTION("IMX SCU firmware protocol driver");
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@ -9,7 +9,7 @@
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*/
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#include <linux/clk.h>
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#include <linux/of_device.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/pm_domain.h>
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#include <linux/pm_runtime.h>
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@ -8,7 +8,8 @@
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#include <linux/device.h>
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#include <linux/interconnect.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <linux/platform_device.h>
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#include <linux/pm_domain.h>
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#include <linux/pm_runtime.h>
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@ -10,7 +10,7 @@
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#include <linux/device.h>
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#include <linux/interconnect.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/pm_domain.h>
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#include <linux/pm_runtime.h>
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@ -6,7 +6,7 @@
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#include <linux/clk.h>
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#include <linux/device.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/pm_domain.h>
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#include <linux/pm_runtime.h>
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@ -187,6 +187,8 @@ static int imx93_blk_ctrl_power_off(struct generic_pm_domain *genpd)
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return 0;
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}
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static struct lock_class_key blk_ctrl_genpd_lock_class;
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static int imx93_blk_ctrl_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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@ -269,6 +271,19 @@ static int imx93_blk_ctrl_probe(struct platform_device *pdev)
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goto cleanup_pds;
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}
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/*
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* We use runtime PM to trigger power on/off of the upstream GPC
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* domain, as a strict hierarchical parent/child power domain
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* setup doesn't allow us to meet the sequencing requirements.
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* This means we have nested locking of genpd locks, without the
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* nesting being visible at the genpd level, so we need a
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* separate lock class to make lockdep aware of the fact that
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* this are separate domain locks that can be nested without a
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* self-deadlock.
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*/
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lockdep_set_class(&domain->genpd.mlock,
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&blk_ctrl_genpd_lock_class);
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bc->onecell_data.domains[i] = &domain->genpd;
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}
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|
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@ -5,8 +5,8 @@
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#include <linux/clk.h>
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#include <linux/delay.h>
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#include <linux/of_device.h>
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#include <linux/iopoll.h>
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#include <linux/mod_devicetable.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
|
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#include <linux/pm_domain.h>
|
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|
|
|
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|
|
@ -21,31 +21,37 @@ int imx_scu_enable_general_irq_channel(struct device *dev);
|
|||
int imx_scu_irq_register_notifier(struct notifier_block *nb);
|
||||
int imx_scu_irq_unregister_notifier(struct notifier_block *nb);
|
||||
int imx_scu_irq_group_enable(u8 group, u32 mask, u8 enable);
|
||||
int imx_scu_irq_get_status(u8 group, u32 *irq_status);
|
||||
int imx_scu_soc_init(struct device *dev);
|
||||
#else
|
||||
static inline int imx_scu_soc_init(struct device *dev)
|
||||
{
|
||||
return -ENOTSUPP;
|
||||
return -EOPNOTSUPP;
|
||||
}
|
||||
|
||||
static inline int imx_scu_enable_general_irq_channel(struct device *dev)
|
||||
{
|
||||
return -ENOTSUPP;
|
||||
return -EOPNOTSUPP;
|
||||
}
|
||||
|
||||
static inline int imx_scu_irq_register_notifier(struct notifier_block *nb)
|
||||
{
|
||||
return -ENOTSUPP;
|
||||
return -EOPNOTSUPP;
|
||||
}
|
||||
|
||||
static inline int imx_scu_irq_unregister_notifier(struct notifier_block *nb)
|
||||
{
|
||||
return -ENOTSUPP;
|
||||
return -EOPNOTSUPP;
|
||||
}
|
||||
|
||||
static inline int imx_scu_irq_group_enable(u8 group, u32 mask, u8 enable)
|
||||
{
|
||||
return -ENOTSUPP;
|
||||
return -EOPNOTSUPP;
|
||||
}
|
||||
|
||||
static inline int imx_scu_irq_get_status(u8 group, u32 *irq_status)
|
||||
{
|
||||
return -EOPNOTSUPP;
|
||||
}
|
||||
#endif
|
||||
#endif /* _SC_SCI_H */
|
||||
|
|
|
|||
Loading…
Reference in a new issue