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Commit cd23d140 authored by Vaishali Thakkar's avatar Vaishali Thakkar Committed by Bjorn Andersson
Browse files

soc: qcom: socinfo: Expose image information 



The socinfo driver provides information about version of the various
images loaded in the system. Expose this to user space for debugging
purpose.

Tested-by: default avatarVinod Koul <vkoul@kernel.org>
Reviewed-by: default avatarVinod Koul <vkoul@kernel.org>
Signed-off-by: default avatarVaishali Thakkar <vaishali.thakkar@linaro.org>
Signed-off-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
parent 9c84c1e7

drivers/soc/qcom/socinfo.c

+84 −0
Original line number Diff line number Diff line
@@ -32,6 +32,39 @@ 
#define SMEM_HW_SW_BUILD_ID            137



#ifdef CONFIG_DEBUG_FS

#define SMEM_IMAGE_VERSION_BLOCKS_COUNT        32

#define SMEM_IMAGE_VERSION_SIZE                4096

#define SMEM_IMAGE_VERSION_NAME_SIZE           75

#define SMEM_IMAGE_VERSION_VARIANT_SIZE        20

#define SMEM_IMAGE_VERSION_OEM_SIZE            32



/*

 * SMEM Image table indices

 */

#define SMEM_IMAGE_TABLE_BOOT_INDEX     0

#define SMEM_IMAGE_TABLE_TZ_INDEX       1

#define SMEM_IMAGE_TABLE_RPM_INDEX      3

#define SMEM_IMAGE_TABLE_APPS_INDEX     10

#define SMEM_IMAGE_TABLE_MPSS_INDEX     11

#define SMEM_IMAGE_TABLE_ADSP_INDEX     12

#define SMEM_IMAGE_TABLE_CNSS_INDEX     13

#define SMEM_IMAGE_TABLE_VIDEO_INDEX    14

#define SMEM_IMAGE_VERSION_TABLE       469



/*

 * SMEM Image table names

 */

static const char *const socinfo_image_names[] = {

	[SMEM_IMAGE_TABLE_ADSP_INDEX] = "adsp",

	[SMEM_IMAGE_TABLE_APPS_INDEX] = "apps",

	[SMEM_IMAGE_TABLE_BOOT_INDEX] = "boot",

	[SMEM_IMAGE_TABLE_CNSS_INDEX] = "cnss",

	[SMEM_IMAGE_TABLE_MPSS_INDEX] = "mpss",

	[SMEM_IMAGE_TABLE_RPM_INDEX] = "rpm",

	[SMEM_IMAGE_TABLE_TZ_INDEX] = "tz",

	[SMEM_IMAGE_TABLE_VIDEO_INDEX] = "video",

};



static const char *const pmic_models[] = {

	[0]  = "Unknown PMIC model",

	[9]  = "PM8994",
@@ -103,6 +136,13 @@ struct socinfo_params { 
	u32 hw_plat;

	u32 fmt;

};



struct smem_image_version {

	char name[SMEM_IMAGE_VERSION_NAME_SIZE];

	char variant[SMEM_IMAGE_VERSION_VARIANT_SIZE];

	char pad;

	char oem[SMEM_IMAGE_VERSION_OEM_SIZE];

};

#endif /* CONFIG_DEBUG_FS */



struct qcom_socinfo {
@@ -230,10 +270,37 @@ QCOM_OPEN(build_id, qcom_show_build_id); 
QCOM_OPEN(pmic_model, qcom_show_pmic_model);

QCOM_OPEN(pmic_die_rev, qcom_show_pmic_die_revision);



#define DEFINE_IMAGE_OPS(type)					\

static int show_image_##type(struct seq_file *seq, void *p)		  \

{								  \

	struct smem_image_version *image_version = seq->private;  \

	seq_puts(seq, image_version->type);			  \

	seq_puts(seq, "\n");					  \

	return 0;						  \

}								  \

static int open_image_##type(struct inode *inode, struct file *file)	  \

{									  \

	return single_open(file, show_image_##type, inode->i_private); \

}									  \

									  \

static const struct file_operations qcom_image_##type##_ops = {	  \

	.open = open_image_##type,					  \

	.read = seq_read,						  \

	.llseek = seq_lseek,						  \

	.release = single_release,					  \

}



DEFINE_IMAGE_OPS(name);

DEFINE_IMAGE_OPS(variant);

DEFINE_IMAGE_OPS(oem);



static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,

				 struct socinfo *info)

{

	struct smem_image_version *versions;

	struct dentry *dentry;

	size_t size;

	int i;



	qcom_socinfo->dbg_root = debugfs_create_dir("qcom_socinfo", NULL);
@@ -302,6 +369,23 @@ static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo, 
		DEBUGFS_ADD(info, build_id);

		break;

	}



	versions = qcom_smem_get(QCOM_SMEM_HOST_ANY, SMEM_IMAGE_VERSION_TABLE,

				 &size);



	for (i = 0; i < ARRAY_SIZE(socinfo_image_names); i++) {

		if (!socinfo_image_names[i])

			continue;



		dentry = debugfs_create_dir(socinfo_image_names[i],

					    qcom_socinfo->dbg_root);

		debugfs_create_file("name", 0400, dentry, &versions[i],

				    &qcom_image_name_ops);

		debugfs_create_file("variant", 0400, dentry, &versions[i],

				    &qcom_image_variant_ops);

		debugfs_create_file("oem", 0400, dentry, &versions[i],

				    &qcom_image_oem_ops);

	}

}



static void socinfo_debugfs_exit(struct qcom_socinfo *qcom_socinfo)