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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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11
nfc/common.h
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@@ -28,6 +28,7 @@
#include <linux/of_gpio.h>
#include <linux/delay.h>
#include <linux/ipc_logging.h>
#include <linux/clk.h>
#include <nfcinfo.h>
#include "i2c_drv.h"
#include "ese_cold_reset.h"
@@ -111,6 +112,7 @@
#define DTS_IRQ_GPIO_STR "qcom,sn-irq"
#define DTS_VEN_GPIO_STR "qcom,sn-ven"
#define DTS_FWDN_GPIO_STR "qcom,sn-firm"
#define DTS_CLKSRC_GPIO_STR "qcom,clk-src"
#define NFC_LDO_SUPPLY_DT_NAME "qcom,sn-vdd-1p8"
#define NFC_LDO_SUPPLY_NAME "qcom,sn-vdd-1p8-supply"
#define NFC_LDO_VOL_DT_NAME "qcom,sn-vdd-1p8-voltage"
@@ -221,6 +223,9 @@ struct platform_ldo {
struct platform_configs {
struct platform_gpio gpio;
struct platform_ldo ldo;
const char *clk_src_name;
/* NFC_CLK pin voting state */
bool clk_pin_voting;
};
@@ -261,6 +266,10 @@ struct nfc_dev {
union nqx_uinfo nqx_info;
/* CLK control */
bool clk_run;
struct clk *s_clk;
void *ipcl;
/* function pointers for the common i2c functionality */
@@ -296,4 +305,6 @@ int nfc_ese_pwr(struct nfc_dev *nfc_dev, unsigned long arg);
int nfc_ldo_unvote(struct nfc_dev *nfc_dev);
int is_nfc_data_available_for_read(struct nfc_dev *nfc_dev);
int validate_nfc_state_nci(struct nfc_dev *nfc_dev);
int nfc_clock_select(struct nfc_dev *nfc_dev);
int nfc_clock_deselect(struct nfc_dev *nfc_dev);
#endif /* _COMMON_H_ */