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Commit 78200d8b authored by Konstantin Dorfman's avatar Konstantin Dorfman
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soc: qcom: spss_utils: add spss_utils as DLKM for GKI 



This change converts statically compiled platform driver into kernel
module.

Change-Id: Iee2c47dd895931f6c8f1982bc34b868287b994f6
Signed-off-by: default avatarKonstantin Dorfman <kdorfman@codeaurora.org>
parent d50cfdc3

drivers/soc/qcom/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -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

drivers/soc/qcom/spss_utils.c

+47 −0
Original line number Diff line number Diff line
@@ -366,7 +366,17 @@ static int spss_create_sysfs(struct device *dev) 


	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 @@ static int spss_utils_create_chardev(struct device *dev) 
	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;

}
@@ -1025,8 +1045,28 @@ 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;

}
@@ -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");