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NFC: Driver: Add clock request gpio configurations

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Added clock request gpio configuration for kalama R2.

Change-Id: I61fe3e0d252e7b6bacd8be437725430d0c7def8e
This commit is contained in:
Khageswararao Rao B
2022-06-07 19:09:03 +05:30
parent eba3412350
commit ade85437e3
2 changed files with 23 additions and 3 deletions
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24
nfc/common.c
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@@ -45,6 +45,7 @@ int nfc_parse_dt(struct device *dev, struct platform_configs *nfc_configs,
nfc_gpio->irq = -EINVAL;
nfc_gpio->dwl_req = -EINVAL;
nfc_gpio->ven = -EINVAL;
nfc_gpio->clkreq = -EINVAL;
/* irq required for i2c based chips only */
if (interface == PLATFORM_IF_I2C) {
@@ -67,16 +68,21 @@ int nfc_parse_dt(struct device *dev, struct platform_configs *nfc_configs,
if ((!gpio_is_valid(nfc_gpio->dwl_req)))
pr_warn("%s: nfc dwl_req gpio invalid %d\n", __func__,
nfc_gpio->dwl_req);
/* Read clock request gpio configuration if MGPIO configurations are not preasent */
if (of_property_read_string(np, DTS_CLKSRC_GPIO_STR, &nfc_configs->clk_src_name)) {
nfc_configs->clk_pin_voting = false;
nfc_gpio->clkreq = of_get_named_gpio(np, DTS_CLKREQ_GPIO_STR, 0);
if (!gpio_is_valid(nfc_gpio->clkreq)) {
dev_err(dev, "clkreq gpio invalid %d\n", nfc_gpio->clkreq);
return -EINVAL;
}
}
else {
nfc_configs->clk_pin_voting = true;
}
pr_info("%s: irq %d, ven %d, dwl %d\n", __func__, nfc_gpio->irq, nfc_gpio->ven,
nfc_gpio->dwl_req);
pr_info("%s: irq %d, ven %d, dwl %d, clkreq %d, clk_pin_voting %d \n", __func__, nfc_gpio->irq, nfc_gpio->ven,
nfc_gpio->dwl_req, nfc_gpio->clkreq, nfc_configs->clk_pin_voting);
/* optional property */
ret = of_property_read_u32_array(np, NFC_LDO_VOL_DT_NAME,
@@ -188,6 +194,9 @@ void gpio_free_all(struct nfc_dev *nfc_dev)
{
struct platform_gpio *nfc_gpio = &nfc_dev->configs.gpio;
if (gpio_is_valid(nfc_gpio->clkreq))
gpio_free(nfc_gpio->clkreq);
if (gpio_is_valid(nfc_gpio->dwl_req))
gpio_free(nfc_gpio->dwl_req);
@@ -420,6 +429,15 @@ int nfc_post_init(struct nfc_dev *nfc_dev)
__func__, nfc_gpio->dwl_req);
}
if(!(nfc_configs.clk_pin_voting)){
ret = configure_gpio(nfc_gpio->clkreq, GPIO_INPUT);
if (ret) {
pr_err("%s: unable to request nfc clkreq gpio [%d]\n",
__func__, nfc_gpio->clkreq);
return ret;
}
}
ret = nfcc_hw_check(nfc_dev);
if (ret || nfc_dev->nfc_state == NFC_STATE_UNKNOWN) {
pr_err("nfc hw check failed ret %d\n", ret);