diff options
| author | Basavaraj Natikar <Basavaraj.Natikar@amd.com> | 2022-06-01 18:28:59 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2022-06-15 16:54:20 +0300 |
| commit | 79bb5c7fe84b3eb35a4af77f4a2d24b2b08afa81 (patch) | |
| tree | de0148d5bca7e84b2c03ade4c25134966bbe2b2d | |
| parent | a1e9bb597a7b4dc0f194b2de03882e9703a118c6 (diff) | |
| download | linux-79bb5c7fe84b3eb35a4af77f4a2d24b2b08afa81.tar.xz | |
pinctrl: amd: Add amd_get_iomux_res function
Presently there is no way to change pinmux configuration run time.
Hence add a function to get IOMUX resource which can be used to
configure IOMUX GPIO pins run time.
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220601152900.1012813-6-Basavaraj.Natikar@amd.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| -rw-r--r-- | drivers/pinctrl/pinctrl-amd.c | 25 | ||||
| -rw-r--r-- | drivers/pinctrl/pinctrl-amd.h | 1 |
2 files changed, 26 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c index 0645c2c24f50..a1d21fb78028 100644 --- a/drivers/pinctrl/pinctrl-amd.c +++ b/drivers/pinctrl/pinctrl-amd.c @@ -963,6 +963,30 @@ static struct pinctrl_desc amd_pinctrl_desc = { .owner = THIS_MODULE, }; +static void amd_get_iomux_res(struct amd_gpio *gpio_dev) +{ + struct pinctrl_desc *desc = &amd_pinctrl_desc; + struct device *dev = &gpio_dev->pdev->dev; + int index; + + index = device_property_match_string(dev, "pinctrl-resource-names", "iomux"); + if (index < 0) { + dev_warn(dev, "failed to get iomux index\n"); + goto out_no_pinmux; + } + + gpio_dev->iomux_base = devm_platform_ioremap_resource(gpio_dev->pdev, index); + if (IS_ERR(gpio_dev->iomux_base)) { + dev_warn(dev, "Failed to get iomux %d io resource\n", index); + goto out_no_pinmux; + } + + return; + +out_no_pinmux: + desc->pmxops = NULL; +} + static int amd_gpio_probe(struct platform_device *pdev) { int ret = 0; @@ -1020,6 +1044,7 @@ static int amd_gpio_probe(struct platform_device *pdev) gpio_dev->ngroups = ARRAY_SIZE(kerncz_groups); amd_pinctrl_desc.name = dev_name(&pdev->dev); + amd_get_iomux_res(gpio_dev); gpio_dev->pctrl = devm_pinctrl_register(&pdev->dev, &amd_pinctrl_desc, gpio_dev); if (IS_ERR(gpio_dev->pctrl)) { diff --git a/drivers/pinctrl/pinctrl-amd.h b/drivers/pinctrl/pinctrl-amd.h index e2523738fe51..76538792ac78 100644 --- a/drivers/pinctrl/pinctrl-amd.h +++ b/drivers/pinctrl/pinctrl-amd.h @@ -83,6 +83,7 @@ struct amd_function { struct amd_gpio { raw_spinlock_t lock; void __iomem *base; + void __iomem *iomux_base; const struct pingroup *groups; u32 ngroups; |