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i.MX drivers update for 6.19:

Browse Source 
- A series from Peng Fan to to improve i.MX SCU firmware drivers
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Merge tag 'imx-drivers-6.19' of https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into soc/drivers

i.MX drivers update for 6.19:

- A series from Peng Fan to to improve i.MX SCU firmware drivers

* tag 'imx-drivers-6.19' of https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  firmware: imx: scu: Use devm_mutex_init
  firmware: imx: scu: Suppress bind attrs
  firmware: imx: scu: Update error code
  firmware: imx: scu-irq: Remove unused export of imx_scu_enable_general_irq_channel
  firmware: imx: scu-irq: Set mu_resource_id before get handle
  firmware: imx: scu-irq: Init workqueue before request mbox channel
  firmware: imx: scu-irq: Free mailbox client on failure at imx_scu_enable_general_irq_channel()
  firmware: imx: scu-irq: fix OF node leak in

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2025-11-25 11:32:26 +01:00
commit 16e8af6c03
2 changed files with 24 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/firmware/imx/imx-scu-irq.c
View File

@ -203,6 +203,18 @@ int imx_scu_enable_general_irq_channel(struct device *dev)
struct mbox_chan *ch;
int ret = 0, i = 0;
if (!of_parse_phandle_with_args(dev->of_node, "mboxes",
"#mbox-cells", 0, &spec)) {
i = of_alias_get_id(spec.np, "mu");
of_node_put(spec.np);
}
/* use mu1 as general mu irq channel if failed */
if (i < 0)
i = 1;
mu_resource_id = IMX_SC_R_MU_0A + i;
ret = imx_scu_get_handle(&imx_sc_irq_ipc_handle);
if (ret)
return ret;
@ -214,27 +226,16 @@ int imx_scu_enable_general_irq_channel(struct device *dev)
cl->dev = dev;
cl->rx_callback = imx_scu_irq_callback;
INIT_WORK(&imx_sc_irq_work, imx_scu_irq_work_handler);
/* SCU general IRQ uses general interrupt channel 3 */
ch = mbox_request_channel_byname(cl, "gip3");
if (IS_ERR(ch)) {
ret = PTR_ERR(ch);
dev_err(dev, "failed to request mbox chan gip3, ret %d\n", ret);
devm_kfree(dev, cl);
return ret;
goto free_cl;
}
INIT_WORK(&imx_sc_irq_work, imx_scu_irq_work_handler);
if (!of_parse_phandle_with_args(dev->of_node, "mboxes",
"#mbox-cells", 0, &spec))
i = of_alias_get_id(spec.np, "mu");
/* use mu1 as general mu irq channel if failed */
if (i < 0)
i = 1;
mu_resource_id = IMX_SC_R_MU_0A + i;
/* Create directory under /sysfs/firmware */
wakeup_obj = kobject_create_and_add("scu_wakeup_source", firmware_kobj);
if (!wakeup_obj) {
@ -253,7 +254,8 @@ int imx_scu_enable_general_irq_channel(struct device *dev)
free_ch:
mbox_free_channel(ch);
free_cl:
devm_kfree(dev, cl);
return ret;
}
EXPORT_SYMBOL(imx_scu_enable_general_irq_channel);

11
drivers/firmware/imx/imx-scu.c
View File

@ -73,9 +73,9 @@ static int imx_sc_linux_errmap[IMX_SC_ERR_LAST] = {
-EACCES, /* IMX_SC_ERR_NOACCESS */
-EACCES, /* IMX_SC_ERR_LOCKED */
-ERANGE, /* IMX_SC_ERR_UNAVAILABLE */
-EEXIST, /* IMX_SC_ERR_NOTFOUND */
-EPERM, /* IMX_SC_ERR_NOPOWER */
-EPIPE, /* IMX_SC_ERR_IPC */
-ENOENT, /* IMX_SC_ERR_NOTFOUND */
-ENODEV, /* IMX_SC_ERR_NOPOWER */
-ECOMM, /* IMX_SC_ERR_IPC */
-EBUSY, /* IMX_SC_ERR_BUSY */
-EIO, /* IMX_SC_ERR_FAIL */
};
@ -324,7 +324,9 @@ static int imx_scu_probe(struct platform_device *pdev)
}
sc_ipc->dev = dev;
mutex_init(&sc_ipc->lock);
ret = devm_mutex_init(dev, &sc_ipc->lock);
if (ret)
return ret;
init_completion(&sc_ipc->done);
imx_sc_ipc_handle = sc_ipc;
@ -352,6 +354,7 @@ static struct platform_driver imx_scu_driver = {
.driver = {
.name = "imx-scu",
.of_match_table = imx_scu_match,
.suppress_bind_attrs = true,
},
.probe = imx_scu_probe,
};