Commit 734c78e7 authored by Dmitry Baryshkov's avatar Dmitry Baryshkov Committed by Bjorn Andersson
Browse files

soc: qcom: socinfo: add info from PMIC models array 



Add debugfs file showing information from PMIC model array.

Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20201222130448.4125297-3-dmitry.baryshkov@linaro.org


Signed-off-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
parent 43053242

drivers/soc/qcom/socinfo.c

+39 −3
Original line number Diff line number Diff line
@@ -15,6 +15,8 @@ 
#include <linux/sys_soc.h>

#include <linux/types.h>



#include <asm/unaligned.h>



/*

 * SoC version type with major number in the upper 16 bits and minor

 * number in the lower 16 bits.
@@ -300,6 +302,32 @@ static int qcom_show_pmic_model(struct seq_file *seq, void *p) 
	return 0;

}



static int qcom_show_pmic_model_array(struct seq_file *seq, void *p)

{

	struct socinfo *socinfo = seq->private;

	unsigned int num_pmics = le32_to_cpu(socinfo->num_pmics);

	unsigned int pmic_array_offset = le32_to_cpu(socinfo->pmic_array_offset);

	int i;

	void *ptr = socinfo;



	ptr += pmic_array_offset;



	/* No need for bounds checking, it happened at socinfo_debugfs_init */

	for (i = 0; i < num_pmics; i++) {

		unsigned int model = SOCINFO_MINOR(get_unaligned_le32(ptr + 2 * i * sizeof(u32)));

		unsigned int die_rev = get_unaligned_le32(ptr + (2 * i + 1) * sizeof(u32));



		if (model <= ARRAY_SIZE(pmic_models) && pmic_models[model])

			seq_printf(seq, "%s %u.%u\n", pmic_models[model],

				   SOCINFO_MAJOR(le32_to_cpu(die_rev)),

				   SOCINFO_MINOR(le32_to_cpu(die_rev)));

		else

			seq_printf(seq, "unknown (%d)\n", model);

	}



	return 0;

}



static int qcom_show_pmic_die_revision(struct seq_file *seq, void *p)

{

	struct socinfo *socinfo = seq->private;
@@ -322,6 +350,7 @@ static int qcom_show_chip_id(struct seq_file *seq, void *p) 


QCOM_OPEN(build_id, qcom_show_build_id);

QCOM_OPEN(pmic_model, qcom_show_pmic_model);

QCOM_OPEN(pmic_model_array, qcom_show_pmic_model_array);

QCOM_OPEN(pmic_die_rev, qcom_show_pmic_die_revision);

QCOM_OPEN(chip_id, qcom_show_chip_id);
@@ -350,12 +379,14 @@ DEFINE_IMAGE_OPS(variant); 
DEFINE_IMAGE_OPS(oem);



static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,

				 struct socinfo *info)

				 struct socinfo *info, size_t info_size)

{

	struct smem_image_version *versions;

	struct dentry *dentry;

	size_t size;

	int i;

	unsigned int num_pmics;

	unsigned int pmic_array_offset;



	qcom_socinfo->dbg_root = debugfs_create_dir("qcom_socinfo", NULL);
@@ -411,6 +442,11 @@ static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo, 
				   &qcom_socinfo->info.raw_device_num);

		fallthrough;

	case SOCINFO_VERSION(0, 11):

		num_pmics = le32_to_cpu(info->num_pmics);

		pmic_array_offset = le32_to_cpu(info->pmic_array_offset);

		if (pmic_array_offset + 2 * num_pmics * sizeof(u32) <= info_size)

			DEBUGFS_ADD(info, pmic_model_array);

		fallthrough;

	case SOCINFO_VERSION(0, 10):

	case SOCINFO_VERSION(0, 9):

		qcom_socinfo->info.foundry_id = __le32_to_cpu(info->foundry_id);
@@ -488,7 +524,7 @@ static void socinfo_debugfs_exit(struct qcom_socinfo *qcom_socinfo) 
}

#else

static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,

				 struct socinfo *info)

				 struct socinfo *info, size_t info_size)

{

}

static void socinfo_debugfs_exit(struct qcom_socinfo *qcom_socinfo) {  }
@@ -528,7 +564,7 @@ static int qcom_socinfo_probe(struct platform_device *pdev) 
	if (IS_ERR(qs->soc_dev))

		return PTR_ERR(qs->soc_dev);



	socinfo_debugfs_init(qs, info);

	socinfo_debugfs_init(qs, info, item_size);



	/* Feed the soc specific unique data into entropy pool */

	add_device_randomness(info, item_size);