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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-08-13 22:14:51 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-08-13 22:14:51 +0200 |
| commit | e75850b4573a092078d5ff1493d3d9ee16b98821 (patch) | |
| tree | ece3bd9b45b43ec13c75de84967043a88fedda6e /drivers/misc/tps6594-esm.c | |
| parent | 5a652fe5e38d906621e9c54a7d14ca4e030ab4f6 (diff) | |
| parent | 2ccdd1b13c591d306f0401d98dedc4bdcd02b421 (diff) | |
| download | linux-e75850b4573a092078d5ff1493d3d9ee16b98821.tar.gz | |
Merge 6.5-rc6 into char-misc-next
We need the char/misc fixes in here as well to build on top of.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/tps6594-esm.c')
| -rw-r--r-- | drivers/misc/tps6594-esm.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/misc/tps6594-esm.c b/drivers/misc/tps6594-esm.c index e8d12e7f2d2a46..b4d67a1a24e44e 100644 --- a/drivers/misc/tps6594-esm.c +++ b/drivers/misc/tps6594-esm.c @@ -13,6 +13,8 @@ #include <linux/mfd/tps6594.h> +#define TPS6594_DEV_REV_1 0x08 + static irqreturn_t tps6594_esm_isr(int irq, void *dev_id) { struct platform_device *pdev = dev_id; @@ -32,11 +34,26 @@ static int tps6594_esm_probe(struct platform_device *pdev) { struct tps6594 *tps = dev_get_drvdata(pdev->dev.parent); struct device *dev = &pdev->dev; + unsigned int rev; int irq; int ret; int i; - for (i = 0 ; i < pdev->num_resources ; i++) { + /* + * Due to a bug in revision 1 of the PMIC, the GPIO3 used for the + * SoC ESM function is used to power the load switch instead. + * As a consequence, ESM can not be used on those PMIC. + * Check the version and return an error in case of revision 1. + */ + ret = regmap_read(tps->regmap, TPS6594_REG_DEV_REV, &rev); + if (ret) + return dev_err_probe(dev, ret, + "Failed to read PMIC revision\n"); + if (rev == TPS6594_DEV_REV_1) + return dev_err_probe(dev, -ENODEV, + "ESM not supported for revision 1 PMIC\n"); + + for (i = 0; i < pdev->num_resources; i++) { irq = platform_get_irq_byname(pdev, pdev->resource[i].name); if (irq < 0) return irq; |