[PATCH v4 12/14] soc: mediatek: mtk-svs: use svs get efuse common function

Roger Lu
2023-01-11T07:46:50Z

SVS might need to read both svs efuse and thermal efuse on the probe flow.
Therefore, add a common efuse read function to remove the superfluous
codes.

Signed-off-by: Roger Lu <roger.lu@mediatek.com>
---
drivers/soc/mediatek/mtk-svs.c | 69 ++++++++++++----------------------
1 file changed, 24 insertions(+), 45 deletions(-)

diff --git a/drivers/soc/mediatek/mtk-svs.c b/drivers/soc/mediatek/mtk-svs.c
index bd23d1111d7b..a7f0a6f02d52 100644
--- a/drivers/soc/mediatek/mtk-svs.c
+++ b/drivers/soc/mediatek/mtk-svs.c
@@ -1758,26 +1758,28 @@ static int svs_bank_resource_setup(struct svs_platform *svsp)
return 0;
}

-static int svs_thermal_efuse_get_data(struct svs_platform *svsp)
+static int svs_get_efuse_data(struct svs_platform *svsp,
+ const char *nvmem_cell_name,
+ u32 **svsp_efuse, size_t *svsp_efuse_max)
{
struct nvmem_cell *cell;

- /* Thermal efuse parsing */
- cell = nvmem_cell_get(svsp->dev, "t-calibration-data");
+ cell = nvmem_cell_get(svsp->dev, nvmem_cell_name);
if (IS_ERR_OR_NULL(cell)) {
- dev_err(svsp->dev, "no \"t-calibration-data\"? %ld\n", PTR_ERR(cell));
+ dev_err(svsp->dev, "no \"%s\"? %ld\n",
+ nvmem_cell_name, PTR_ERR(cell));
return PTR_ERR(cell);
}

- svsp->tefuse = nvmem_cell_read(cell, &svsp->tefuse_max);
- if (IS_ERR(svsp->tefuse)) {
- dev_err(svsp->dev, "cannot read thermal efuse: %ld\n",
- PTR_ERR(svsp->tefuse));
+ *svsp_efuse = nvmem_cell_read(cell, svsp_efuse_max);
+ if (IS_ERR(*svsp_efuse)) {
+ dev_err(svsp->dev, "cannot read \"%s\" efuse: %ld\n",
+ nvmem_cell_name, PTR_ERR(*svsp_efuse));
nvmem_cell_put(cell);
- return PTR_ERR(svsp->tefuse);
+ return PTR_ERR(*svsp_efuse);
}

- svsp->tefuse_max /= sizeof(u32);
+ *svsp_efuse_max /= sizeof(u32);
nvmem_cell_put(cell);

return 0;
@@ -1825,7 +1827,8 @@ static bool svs_mt8192_efuse_parsing(struct svs_platform *svsp)
svsb->vmax += svsb->dvt_fixed;
}

- ret = svs_thermal_efuse_get_data(svsp);
+ ret = svs_get_efuse_data(svsp, "t-calibration-data",
+ &svsp->tefuse, &svsp->tefuse_max);
if (ret)
return false;

@@ -1930,7 +1933,8 @@ static bool svs_mt8183_efuse_parsing(struct svs_platform *svsp)
}
}

- ret = svs_thermal_efuse_get_data(svsp);
+ ret = svs_get_efuse_data(svsp, "t-calibration-data",
+ &svsp->tefuse, &svsp->tefuse_max);
if (ret)
return false;

@@ -2039,32 +2043,6 @@ static bool svs_mt8183_efuse_parsing(struct svs_platform *svsp)
return true;
}

-static bool svs_is_efuse_data_correct(struct svs_platform *svsp)
-{
- struct nvmem_cell *cell;
-
- /* Get svs efuse by nvmem */
- cell = nvmem_cell_get(svsp->dev, "svs-calibration-data");
- if (IS_ERR(cell)) {
- dev_err(svsp->dev, "no \"svs-calibration-data\"? %ld\n",
- PTR_ERR(cell));
- return false;
- }
-
- svsp->efuse = nvmem_cell_read(cell, &svsp->efuse_max);
- if (IS_ERR(svsp->efuse)) {
- dev_err(svsp->dev, "cannot read svs efuse: %ld\n",
- PTR_ERR(svsp->efuse));
- nvmem_cell_put(cell);
- return false;
- }
-
- svsp->efuse_max /= sizeof(u32);
- nvmem_cell_put(cell);
-
- return true;
-}
-
static struct device *svs_get_subsys_device(struct svs_platform *svsp,
const char *node_name)
{
@@ -2404,8 +2382,9 @@ static int svs_probe(struct platform_device *pdev)
if (ret)
return ret;

- if (!svs_is_efuse_data_correct(svsp)) {
- dev_notice(svsp->dev, "efuse data isn't correct\n");
+ ret = svs_get_efuse_data(svsp, "svs-calibration-data",
+ &svsp->efuse, &svsp->efuse_max);
+ if (ret) {
ret = -EPERM;
goto svs_probe_free_efuse;
}
@@ -2413,13 +2392,13 @@ static int svs_probe(struct platform_device *pdev)
if (!svsp_data->efuse_parsing(svsp)) {
dev_err(svsp->dev, "efuse data parsing failed\n");
ret = -EPERM;
- goto svs_probe_free_resource;
+ goto svs_probe_free_tefuse;
}

ret = svs_bank_resource_setup(svsp);
if (ret) {
dev_err(svsp->dev, "svs bank resource setup fail: %d\n", ret);
- goto svs_probe_free_resource;
+ goto svs_probe_free_tefuse;
}

svsp->main_clk = devm_clk_get(svsp->dev, "main");
@@ -2427,12 +2406,12 @@ static int svs_probe(struct platform_device *pdev)
dev_err(svsp->dev, "failed to get clock: %ld\n",
PTR_ERR(svsp->main_clk));
ret = PTR_ERR(svsp->main_clk);
- goto svs_probe_free_resource;
+ goto svs_probe_free_tefuse;
}

ret = svs_clk_enable(svsp);
if (ret)
- goto svs_probe_free_resource;
+ goto svs_probe_free_tefuse;

svsp->base = of_iomap(svsp->dev->of_node, 0);
if (IS_ERR_OR_NULL(svsp->base)) {
@@ -2477,7 +2456,7 @@ static int svs_probe(struct platform_device *pdev)
svs_probe_clk_disable:
svs_clk_disable(svsp);

-svs_probe_free_resource:
+svs_probe_free_tefuse:
if (!IS_ERR_OR_NULL(svsp->tefuse))
kfree(svsp->tefuse);

--
2.18.0