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NFC: Driver: Add SW WAR to enable and disable NFC clock

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Added SW WAR to enable NFC clock at NFC ON and disable
NFC clock at NFC OFF.

Change-Id: Id617efb53ba06caa735927b4d271990be7e4766c
This commit is contained in:
Khageswararao Rao B
2022-02-17 14:54:11 +05:30
parent a6c862cb8a
commit 414ee1d668
4 changed files with 79 additions and 6 deletions
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27
nfc/common.c
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@@ -66,6 +66,13 @@ int nfc_parse_dt(struct device *dev, struct platform_configs *nfc_configs,
pr_warn("%s: nfc dwl_req gpio invalid %d\n", __func__,
nfc_gpio->dwl_req);
if (of_property_read_string(np, DTS_CLKSRC_GPIO_STR, &nfc_configs->clk_src_name)) {
nfc_configs->clk_pin_voting = false;
}
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);
@@ -329,14 +336,22 @@ static int nfc_ioctl_power_states(struct nfc_dev *nfc_dev, unsigned long arg)
nfc_dev->nfc_state = NFC_STATE_NCI;
} else if (arg == NFC_ENABLE) {
/*
* Setting flag true when NFC is enabled
*/
if(nfc_dev->configs.clk_pin_voting) {
/* Enabling nfc clock */
ret = nfc_clock_select(nfc_dev);
if (ret)
pr_err("%s unable to select clock\n", __func__);
}
/* Setting flag true when NFC is enabled */
nfc_dev->cold_reset.is_nfc_enabled = true;
} else if (arg == NFC_DISABLE) {
/*
* Setting flag true when NFC is disabled
*/
if(nfc_dev->configs.clk_pin_voting) {
/* Disabling nfc clock */
ret = nfc_clock_deselect(nfc_dev);
if (ret)
pr_err("%s unable to disable clock\n", __func__);
}
/* Setting flag true when NFC is disabled */
nfc_dev->cold_reset.is_nfc_enabled = false;
} else {
pr_err("%s bad arg %lu\n", __func__, arg);