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soc: qcom: spss_utils: add spss_utils as DLKM for GKI

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This change converts statically compiled platform driver into kernel
module.

Change-Id: Iee2c47dd895931f6c8f1982bc34b868287b994f6
Signed-off-by: Konstantin Dorfman <kdorfman@codeaurora.org>
This commit is contained in:
Konstantin Dorfman 2019-10-10 15:49:25 +03:00
commit 78200d8ba0
2 changed files with 48 additions and 1 deletions
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2
drivers/soc/qcom/Kconfig
View file

@ -46,7 +46,7 @@ config QCOM_GLINK_SSR
config MSM_SPSS_UTILS
depends on MSM_PIL
bool "Secure Processor Utilities"
tristate "Secure Processor Utilities"
help
spss-utils driver selects Secure Processor firmware file name.name
The firmware file name for dev, test or production is selected

47
drivers/soc/qcom/spss_utils.c
View file

@ -366,7 +366,17 @@ remove_firmware_name:
return ret;
}
static void spss_destroy_sysfs(struct device *dev)
{
device_remove_file(dev, &dev_attr_pbl_cmac);
device_remove_file(dev, &dev_attr_iar_enabled);
device_remove_file(dev, &dev_attr_iar_state);
device_remove_file(dev, &dev_attr_cmac_buf);
device_remove_file(dev, &dev_attr_spss_debug_reg);
device_remove_file(dev, &dev_attr_test_fuse_state);
device_remove_file(dev, &dev_attr_firmware_name);
}
/*==========================================================================*/
/* IOCTL */
/*==========================================================================*/
@ -509,6 +519,13 @@ exit_unreg_chrdev_region:
return ret;
}
static void spss_utils_destroy_chardev(void)
{
device_destroy(spss_utils_dev->driver_class, spss_utils_dev->device_no);
class_destroy(spss_utils_dev->driver_class);
unregister_chrdev_region(spss_utils_dev->device_no, 1);
}
/*==========================================================================*/
/* Device Tree */
/*==========================================================================*/
@ -728,6 +745,7 @@ static int spss_parse_dt(struct device_node *node)
/* read IAR_FEATURE_ENABLED from soc fuse */
val1 = readl_relaxed(spss_fuse3_reg);
iounmap(spss_fuse3_reg);
spss_fuse3_mask = (1<<spss_fuse3_bit);
pr_debug("iar_enabled fuse, addr [0x%x] val [0x%x] mask [0x%x].\n",
spss_fuse3_addr, val1, spss_fuse3_mask);
@ -760,6 +778,7 @@ static int spss_parse_dt(struct device_node *node)
}
val1 = readl_relaxed(spss_fuse4_reg);
iounmap(spss_fuse4_reg);
spss_fuse4_mask = (0x07 << spss_fuse4_bit); /* 3 bits */
pr_debug("IAR_STATE fuse, addr [0x%x] val [0x%x] mask [0x%x].\n",
spss_fuse4_addr, val1, spss_fuse4_mask);
@ -796,6 +815,7 @@ static int spss_set_fw_cmac(u32 *cmac, size_t cmac_size)
pr_debug("cmac[%d] [0x%x]\n", i, cmac[i]);
}
reg += cmac_size;
iounmap(cmac_mem);
return 0;
}
@ -1025,11 +1045,31 @@ static int spss_probe(struct platform_device *pdev)
if (IS_ERR_OR_NULL(iar_notif_handle)) {
pr_err("register fail for IAR notifier\n");
kfree(iar_nb);
iar_notif_handle = NULL;
iar_nb = NULL;
}
return 0;
}
static int spss_remove(struct platform_device *pdev)
{
spss_utils_destroy_chardev();
spss_destroy_sysfs(spss_dev);
if (!iar_notif_handle && !iar_nb)
subsys_notif_unregister_notifier(iar_notif_handle, iar_nb);
kfree(iar_nb);
iar_nb = 0;
kfree(spss_utils_dev);
spss_utils_dev = 0;
return 0;
}
static const struct of_device_id spss_match_table[] = {
{ .compatible = "qcom,spss-utils", },
{ },
@ -1037,6 +1077,7 @@ static const struct of_device_id spss_match_table[] = {
static struct platform_driver spss_driver = {
.probe = spss_probe,
.remove = spss_remove,
.driver = {
.name = DEVICE_NAME,
.of_match_table = of_match_ptr(spss_match_table),
@ -1058,5 +1099,11 @@ static int __init spss_init(void)
}
late_initcall(spss_init); /* start after PIL driver */
static void __exit spss_exit(void)
{
platform_driver_unregister(&spss_driver);
}
module_exit(spss_exit)
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Secure Processor Utilities");