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soc/tegra: fuse: Add function to add lookups

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Add helper function tegra_fuse_add_lookups() to register Tegra fuse
nvmem lookups. So, this can be shared between tegra_fuse_init() and
ACPI probe, which is to be introduced later.

Use kmemdup_array to duplicate fuse->soc->lookups.

Signed-off-by: Kartik <kkartik@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Kartik 2023-10-17 10:53:19 +05:30 committed by Thierry Reding
parent 7b0c505eb3
commit 71661c1c8c
1 changed files with 17 additions and 8 deletions
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25
drivers/soc/tegra/fuse/fuse-tegra.c
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@ -113,6 +113,18 @@ static void tegra_fuse_restore(void *base)
fuse->clk = NULL;
}
static int tegra_fuse_add_lookups(struct tegra_fuse *fuse)
{
fuse->lookups = kmemdup_array(fuse->soc->lookups, sizeof(*fuse->lookups),
fuse->soc->num_lookups, GFP_KERNEL);
if (!fuse->lookups)
return -ENOMEM;
nvmem_add_cell_lookups(fuse->lookups, fuse->soc->num_lookups);
return 0;
}
static int tegra_fuse_probe(struct platform_device *pdev)
{
void __iomem *base = fuse->base;
@ -398,6 +410,7 @@ static int __init tegra_init_fuse(void)
const struct of_device_id *match;
struct device_node *np;
struct resource regs;
int err;
tegra_init_apbmisc();
@ -495,15 +508,11 @@ static int __init tegra_init_fuse(void)
pr_debug("Tegra CPU Speedo ID %d, SoC Speedo ID %d\n",
tegra_sku_info.cpu_speedo_id, tegra_sku_info.soc_speedo_id);
if (fuse->soc->lookups) {
size_t size = sizeof(*fuse->lookups) * fuse->soc->num_lookups;
err = tegra_fuse_add_lookups(fuse);
if (err)
pr_err("failed to add FUSE lookups\n");
fuse->lookups = kmemdup(fuse->soc->lookups, size, GFP_KERNEL);
if (fuse->lookups)
nvmem_add_cell_lookups(fuse->lookups, fuse->soc->num_lookups);
}
return 0;
return err;
}
early_initcall(tegra_init_fuse);