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Merge branch 'clo/driver/br_android_ncihalx_comm_14' into nfc-driver.lnx.14.0

Browse Source 
* clo/driver/br_android_ncihalx_comm_14:
  Updated corresponding to - GITHUB_CODE_DROP
  Updated corresponding to - NFC_AR_00_1E800_14.02.00_OpnSrc
  Updated corresponding to - NFC_AR_00_1E800_13.0B.00_OpnSrc
  Updated corresponding to - NFC_AR_00_1E800_13.09.00_OpnSrc

Change-Id: Idd8d27502306f8ca55b290839f7e36292201ff24
This commit is contained in:
Khageswararao Rao B
2023-01-25 13:02:27 +05:30
parent f9075847af 767acc6b4a
commit 4e09540972
2 changed files with 83 additions and 31 deletions
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71
nfc/common.c
View File

@@ -1,6 +1,6 @@
/******************************************************************************
* Copyright (C) 2015, The Linux Foundation. All rights reserved.
* Copyright (C) 2019-2021 NXP
* Copyright (C) 2019-2022 NXP
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -50,22 +50,22 @@ int nfc_parse_dt(struct device *dev, struct platform_configs *nfc_configs,
if (interface == PLATFORM_IF_I2C) {
nfc_gpio->irq = of_get_named_gpio(np, DTS_IRQ_GPIO_STR, 0);
if ((!gpio_is_valid(nfc_gpio->irq))) {
pr_err("%s: nfc irq gpio invalid %d\n", __func__,
pr_err("%s: irq gpio invalid %d\n", __func__,
nfc_gpio->irq);
return -EINVAL;
return nfc_gpio->irq;
}
pr_info("%s: irq %d\n", __func__, nfc_gpio->irq);
}
nfc_gpio->ven = of_get_named_gpio(np, DTS_VEN_GPIO_STR, 0);
if ((!gpio_is_valid(nfc_gpio->ven))) {
pr_err("%s: nfc ven gpio invalid %d\n", __func__, nfc_gpio->ven);
return -EINVAL;
pr_err("%s: ven gpio invalid %d\n", __func__, nfc_gpio->ven);
return nfc_gpio->ven;
}
/* some products like sn220 does not required fw dwl pin */
nfc_gpio->dwl_req = of_get_named_gpio(np, DTS_FWDN_GPIO_STR, 0);
/* not returning failure for dwl gpio as it is optional for sn220 */
if ((!gpio_is_valid(nfc_gpio->dwl_req))) {
pr_warn("%s: nfc dwl_req gpio invalid %d\n", __func__,
pr_warn("%s: dwl_req gpio invalid %d\n", __func__,
nfc_gpio->dwl_req);
}
/* Read clkreq GPIO pin number from DTSI */
@@ -166,8 +166,7 @@ int configure_gpio(unsigned int gpio, int flag)
}
if (ret) {
pr_err("%s: unable to set direction for nfc gpio [%d]\n",
__func__, gpio);
pr_err("%s: unable to set direction for nfc gpio [%d]\n", __func__, gpio);
gpio_free(gpio);
return ret;
}
@@ -279,6 +278,46 @@ int nfc_misc_register(struct nfc_dev *nfc_dev,
return 0;
}
/**
* nfc_gpio_info() - gets the status of nfc gpio pins and encodes into a byte.
* @nfc_dev: nfc device data structure
* @arg: userspace buffer
*
* Encoding can be done in following manner
* 1) map the gpio value into INVALID(-2), SET(1), RESET(0).
* 2) mask the first 2 bits of gpio.
* 3) left shift the 2 bits as multiple of 2.
* 4) multiply factor can be defined as position of gpio pin in struct platform_gpio
*
* Return: -EFAULT, if unable to copy the data from kernel space to userspace, 0
* if Success(or no issue)
*/
static int nfc_gpio_info(struct nfc_dev *nfc_dev, unsigned long arg)
{
unsigned int gpios_status = 0;
int value = 0;
int gpio_no = 0;
int i;
int ret = 0;
struct platform_gpio *nfc_gpio = &nfc_dev->configs.gpio;
for (i = 0; i < sizeof(struct platform_gpio) / sizeof(unsigned int);
i++) {
gpio_no = *((unsigned int *)nfc_gpio + i);
value = get_valid_gpio(gpio_no);
if (value < 0)
value = -2;
gpios_status |= (value & GPIO_STATUS_MASK_BITS)<<(GPIO_POS_SHIFT_VAL*i);
}
ret = copy_to_user((uint32_t *) arg, &gpios_status, sizeof(value));
if (ret < 0) {
pr_err("%s : Unable to copy data from kernel space to user space", __func__);
return -EFAULT;
}
return 0;
}
/**
* nfc_ioctl_power_states() - power control
* @nfc_dev: nfc device data structure
@@ -305,12 +344,14 @@ static int nfc_ioctl_power_states(struct nfc_dev *nfc_dev, unsigned long arg)
set_valid_gpio(nfc_gpio->dwl_req, 0);
gpio_set_ven(nfc_dev, 0);
nfc_dev->nfc_ven_enabled = false;
nfc_dev->nfc_state = NFC_STATE_NCI;
} else if (arg == NFC_POWER_ON) {
nfc_dev->nfc_enable_intr(nfc_dev);
set_valid_gpio(nfc_gpio->dwl_req, 0);
gpio_set_ven(nfc_dev, 1);
nfc_dev->nfc_ven_enabled = true;
nfc_dev->nfc_state = NFC_STATE_NCI;
} else if (arg == NFC_FW_DWL_VEN_TOGGLE) {
/*
* We are switching to download Mode, toggle the enable pin
@@ -354,7 +395,7 @@ static int nfc_ioctl_power_states(struct nfc_dev *nfc_dev, unsigned long arg)
/* 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);
pr_err("%s: bad arg %lu\n", __func__, arg);
ret = -ENOIOCTLCMD;
}
return ret;
@@ -378,6 +419,7 @@ long nfc_dev_compat_ioctl(struct file *pfile, unsigned int cmd,
unsigned long arg)
{
int ret = 0;
arg = (compat_u64) arg;
pr_debug("%s: cmd = %x arg = %zx\n", __func__, cmd, arg);
ret = nfc_dev_ioctl(pfile, cmd, arg);
@@ -627,11 +669,9 @@ long nfc_dev_ioctl(struct file *pfile, unsigned int cmd, unsigned long arg)
nfc_dev->cold_reset.is_nfc_read_pending = true;
/* Set default NFC state as NCI for Nfc read pending request */
nfc_dev->nfc_state = NFC_STATE_NCI;
}
else if (arg == NFC_RESET_READ_PENDING){
} else if (arg == NFC_RESET_READ_PENDING) {
nfc_dev->cold_reset.is_nfc_read_pending = false;
}
else {
} else {
ret = -EINVAL;
}
break;
@@ -641,6 +681,9 @@ long nfc_dev_ioctl(struct file *pfile, unsigned int cmd, unsigned long arg)
case ESE_GET_PWR:
ret = nfc_ese_pwr(nfc_dev, ESE_POWER_STATE);
break;
case NFC_GET_GPIO_STATUS:
ret = nfc_gpio_info(nfc_dev, arg);
break;
case NFCC_GET_INFO:
ret = nfc_ioctl_nfcc_info(pfile, arg);
break;
@@ -663,6 +706,7 @@ long nfc_dev_ioctl(struct file *pfile, unsigned int cmd, unsigned long arg)
int nfc_dev_open(struct inode *inode, struct file *filp)
{
struct nfc_dev *nfc_dev = NULL;
nfc_dev = container_of(inode->i_cdev, struct nfc_dev, c_dev);
if (!nfc_dev)
@@ -719,6 +763,7 @@ int nfc_dev_flush(struct file *pfile, fl_owner_t id)
int nfc_dev_close(struct inode *inode, struct file *filp)
{
struct nfc_dev *nfc_dev = NULL;
nfc_dev = container_of(inode->i_cdev, struct nfc_dev, c_dev);
if (!nfc_dev)

9
nfc/common.h
View File

@@ -79,13 +79,14 @@
#define MAX_DL_BUFFER_SIZE (DL_HDR_LEN + DL_CRC_LEN + \
MAX_DL_PAYLOAD_LEN)
/* Retry count for normal write */
#define NO_RETRY (1)
/* Maximum retry count for standby writes */
#define MAX_RETRY_COUNT (3)
#define MAX_WRITE_IRQ_COUNT (5)
#define MAX_IRQ_WAIT_TIME (90)
#define WAKEUP_SRC_TIMEOUT (2000)
#define WAKEUP_SRC_TIMEOUT (100)
/* command response timeout */
#define NCI_CMD_RSP_TIMEOUT_MS (2000)
@@ -104,6 +105,7 @@
#define ESE_SET_PWR _IOW(NFC_MAGIC, 0x02, uint32_t)
#define ESE_GET_PWR _IOR(NFC_MAGIC, 0x03, uint32_t)
#define NFC_SET_RESET_READ_PENDING _IOW(NFC_MAGIC, 0x04, uint32_t)
#define NFC_GET_GPIO_STATUS _IOR(NFC_MAGIC, 0x05, uint32_t)
#define NFC_SECURE_ZONE _IOW(NFC_MAGIC, 0x0A, uint32_t)
#define DTS_IRQ_GPIO_STR "qcom,sn-irq"
@@ -121,6 +123,11 @@
#define NFC_VDDIO_MAX 1950000 //in uV
#define NFC_CURRENT_MAX 157000 //in uA
/* Each GPIO occupies consecutive two bits */
#define GPIO_POS_SHIFT_VAL 2
/* Two bits to indicate GPIO status (Invalid(-2), Set(1) or Reset(0)) */
#define GPIO_STATUS_MASK_BITS 3
//NFC ID for registration with secure libraries
#define HW_STATE_UID 0x108
#define HW_OP_GET_STATE 1