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NVIDIA: SAUCE: efuse: Add odm-id, odm-info support

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Added odm-id and odm-info read support.

http://nvbugs/5210086

Signed-off-by: Mallikarjun Kasoju <mkasoju@nvidia.com>
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
Signed-off-by: Kartik Rajput <kkartik@nvidia.com>
Acked-by: Noah Wager <noah.wager@canonical.com>
Acked-by: Jacob Martin <jacob.martin@canonical.com>
Signed-off-by: Noah Wager <noah.wager@canonical.com>
This commit is contained in:
Mallikarjun Kasoju
2025-04-21 03:45:30 +00:00
committed by Noah Wager
parent 6dc496e55b
commit ff9f6417b4
1 changed files with 93 additions and 0 deletions
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drivers/nvmem/tegra-efuse.c
+93
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@@ -10,6 +10,10 @@
#include <linux/of.h>
#include <linux/platform_device.h>
#define TEGRA_EFUSE_ODM_0_OFFSET 0x408
#define TEGRA_EFUSE_ODM_1_OFFSET 0x40c
#define TEGRA_EFUSE_ODM_INFO_OFFSET 0x29c
struct tegra_efuse_soc {
int size;
const struct nvmem_cell_lookup *lookups;
@@ -25,6 +29,12 @@ struct tegra_efuse {
struct nvmem_device *nvmem;
const struct tegra_efuse_soc *soc;
/* sysfs attribute for odm-id_0 */
struct device_attribute efuse_attr_odm_id_0;
/* sysfs attribute for odm-id_1 */
struct device_attribute efuse_attr_odm_id_1;
/* sysfs attribute for odm info */
struct device_attribute efuse_attr_odm_info;
};
static int tegra_efuse_readl(struct tegra_efuse *efuse, unsigned int offset)
@@ -43,6 +53,47 @@ static int tegra_efuse_read(void *priv, unsigned int offset, void *value, size_t
return 0;
}
static ssize_t tegra_efuse_odm_id_0_data_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct tegra_efuse *efuse = dev_get_drvdata(dev);
int i, count = 0;
u32 val;
val = tegra_efuse_readl(efuse, TEGRA_EFUSE_ODM_0_OFFSET);
count = scnprintf(buf, PAGE_SIZE, "0x%08x\n", val);
return count;
}
static ssize_t tegra_efuse_odm_id_1_data_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct tegra_efuse *efuse = dev_get_drvdata(dev);
int i, count = 0;
u32 val;
val = tegra_efuse_readl(efuse, TEGRA_EFUSE_ODM_1_OFFSET);
count = scnprintf(buf, PAGE_SIZE, "0x%08x\n", val);
return count;
}
static ssize_t tegra_efuse_odm_info_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct tegra_efuse *efuse = dev_get_drvdata(dev);
int i, count = 0;
u32 val;
val = tegra_efuse_readl(efuse, TEGRA_EFUSE_ODM_INFO_OFFSET);
count = scnprintf(buf, PAGE_SIZE, "0x%08x\n", val);
return count;
}
static int tegra_efuse_probe(struct platform_device *pdev)
{
@@ -50,6 +101,7 @@ static int tegra_efuse_probe(struct platform_device *pdev)
struct nvmem_config nvmem;
struct resource *res;
int id;
int err;
id = of_alias_get_id(pdev->dev.of_node, "efuse");
if (id < 0)
@@ -90,12 +142,51 @@ static int tegra_efuse_probe(struct platform_device *pdev)
if (IS_ERR(efuse->nvmem))
return dev_err_probe(&pdev->dev, PTR_ERR(efuse->nvmem),
"failed to register NVMEM device\n");
/* Create sysfs odm-id-0 attribute */
sysfs_attr_init(&efuse->efuse_attr_odm_id_0.attr);
efuse->efuse_attr_odm_id_0.attr.name = "efuse_odm_id_0";
efuse->efuse_attr_odm_id_0.attr.mode = 0444; /* read-only */
efuse->efuse_attr_odm_id_0.show = tegra_efuse_odm_id_0_data_show;
efuse->efuse_attr_odm_id_0.store = NULL; /* read-only attribute */
err = device_create_file(&pdev->dev, &efuse->efuse_attr_odm_id_0);
if (err)
return dev_err_probe(&pdev->dev, err,
"failed to create odm_id_0 sysfs attribute\n");
/* Create sysfs odm-id-1 attribute */
sysfs_attr_init(&efuse->efuse_attr_odm_id_1.attr);
efuse->efuse_attr_odm_id_1.attr.name = "efuse_odm_id_1";
efuse->efuse_attr_odm_id_1.attr.mode = 0444; /* read-only */
efuse->efuse_attr_odm_id_1.show = tegra_efuse_odm_id_1_data_show;
efuse->efuse_attr_odm_id_1.store = NULL; /* read-only attribute */
err = device_create_file(&pdev->dev, &efuse->efuse_attr_odm_id_1);
if (err)
return dev_err_probe(&pdev->dev, err,
"failed to create odm_id_1 sysfs attribute\n");
/* Create sysfs odm-data attribute */
sysfs_attr_init(&efuse->efuse_attr_odm_info.attr);
efuse->efuse_attr_odm_info.attr.name = "efuse_odm_info";
efuse->efuse_attr_odm_info.attr.mode = 0444; /* read-only */
efuse->efuse_attr_odm_info.show = tegra_efuse_odm_info_show;
efuse->efuse_attr_odm_info.store = NULL; /* read-only attribute */
err = device_create_file(&pdev->dev, &efuse->efuse_attr_odm_info);
if (err)
return dev_err_probe(&pdev->dev, err,
"failed to create odm_info sysfs attribute\n");
return 0;
}
static int tegra_efuse_remove(struct platform_device *pdev)
{
struct tegra_efuse *efuse = platform_get_drvdata(pdev);
device_remove_file(&pdev->dev, &efuse->efuse_attr_odm_id_0);
device_remove_file(&pdev->dev, &efuse->efuse_attr_odm_id_1);
device_remove_file(&pdev->dev, &efuse->efuse_attr_odm_info);
return 0;
}
@@ -125,6 +216,8 @@ static const struct nvmem_keepout tegra264_efuse_keepouts[] = {
{ .start = 0x00060, .end = 0x00064 },
{ .start = 0x00080, .end = 0x00088 },
{ .start = 0x000a4, .end = 0x00100 },
{ .start = 0x0029c, .end = 0x002a0 },
{ .start = 0x00408, .end = 0x00410 },
{ .start = 0x0042c, .end = 0x00434 },
{ .start = 0x00450, .end = 0x00454 },
{ .start = 0x00594, .end = 0x0059c },