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path: root/ANDROID_3.4.5/drivers/misc/pn547.c
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Diffstat (limited to 'ANDROID_3.4.5/drivers/misc/pn547.c')
-rwxr-xr-xANDROID_3.4.5/drivers/misc/pn547.c1180
1 files changed, 0 insertions, 1180 deletions
diff --git a/ANDROID_3.4.5/drivers/misc/pn547.c b/ANDROID_3.4.5/drivers/misc/pn547.c
deleted file mode 100755
index ff819341..00000000
--- a/ANDROID_3.4.5/drivers/misc/pn547.c
+++ /dev/null
@@ -1,1180 +0,0 @@
-/*
- * Copyright (C) 2010 Trusted Logic S.A.
- *
- * 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
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/i2c.h>
-#include <linux/irq.h>
-#include <linux/jiffies.h>
-#include <linux/uaccess.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-#include <linux/gpio.h>
-#include <linux/miscdevice.h>
-#include <linux/spinlock.h>
-#include <linux/nfc/pn544.h>
-
-#include <mach/wmt_iomux.h>
-
-#include <mach/hardware.h>
-//#include <plat/gpio-core.h>
-//#include <plat/gpio-cfg.h>
-//#include <plat/gpio-cfg-helpers.h>
-
-
-#undef pr_err
-#define pr_err printk
-//#define pr_debug printk
-//#define pr_warning printk
-
-#define DRIVER_DESC "NFC driver for PN544"
-
-#define CLIENT_ADDR 0x28 //0x2b mod 2014-7-10
-#define WMT_PN544_I2C_CHANNEL 0
-
-struct i2c_client *pn544_client;
-static int g_chip_nr = 7;
-
-#define MAX_BUFFER_SIZE 512
-
-extern int wmt_getsyspara(char *varname, unsigned char *varval, int *varlen);
-
-struct pn544_dev {
- wait_queue_head_t read_wq;
- struct mutex read_mutex;
- struct i2c_client *client;
- struct miscdevice pn544_device;
-
-
- int ven_gpio;
- int ven_active;
- int ven_on_off;
-
- int firm_gpio;
- int firm_active;
-
- int irq_gpio;
- int irq_active;
-
-
- bool irq_enabled;
- spinlock_t irq_enabled_lock;
-};
-
-//**********************add 2014-7-16
-static int irq_gpio = 0;
-
-void wmt_clr_int(void)
-{
- int num = irq_gpio;
-
- int reg_shift = 20;
- if (num > /*11*/42)
- {
- return;
- }
-
- if (num < 20)
- {
- REG32_VAL(__GPIO_BASE+0x0360) = 1<<num;
- }
- else
- {
- switch (num)
- {
- case WMT_PIN_GP5_VDOUT11:
- REG32_VAL(__GPIO_BASE+0x0360) = 1<<reg_shift;
- break;
- case WMT_PIN_GP5_VDOUT12:
- REG32_VAL(__GPIO_BASE+0x0360) = 1<<(reg_shift+1);
- break;
- case WMT_PIN_GP6_VDOUT18:
- REG32_VAL(__GPIO_BASE+0x0360) = 1<<(reg_shift+2);
- break;
- case WMT_PIN_GP6_VDOUT19:
- REG32_VAL(__GPIO_BASE+0x0360) = 1<<(reg_shift+3);
- break;
- case WMT_PIN_GP6_VDOUT20:
- REG32_VAL(__GPIO_BASE+0x0360) = 1<<(reg_shift+4);
- break;
- case WMT_PIN_GP6_VDOUT21:
- REG32_VAL(__GPIO_BASE+0x0360) = 1<<(reg_shift+5);
- break;
-
- }
- }
- //gpio 0-19 vdout11 12 18:21
- //REG32_VAL(__GPIO_BASE+0x0360) = 1<<num; //interrupt status register ,1:active 0:inactive
- // write 1:to clear
-}
-
-void wmt_set_irqinput(void)
-{
- int num = irq_gpio;
-
- if (num > /*19*/42)
- return;
- if (num < 20)
- {
- REG32_VAL(__GPIO_BASE+0x0040) |= (1<<num); //enable gpio
- REG32_VAL(__GPIO_BASE+0x0080) &= ~(1<<num); //set input
- }
-
- //GPIO GP5 Enable Register for VDOUT[15:8]
- //GPIO GP6 Enable Register for VDOUT[23:16]
-
- switch (num) //gpio 0-19 vdout11 12 18:21 -->gpio 31 32 38:41
- {
- case WMT_PIN_GP5_VDOUT11:
- REG32_VAL(__GPIO_BASE+0x0044) |= (1<<(num-20)); //enable gpio
- REG32_VAL(__GPIO_BASE+0x0084) &= ~(1<<(num-20)); //set input
- break;
- case WMT_PIN_GP5_VDOUT12:
- REG32_VAL(__GPIO_BASE+0x0044) |= (1<<(num-20)); //enable gpio
- REG32_VAL(__GPIO_BASE+0x0084) &= ~(1<<(num-20)); //set input
- break;
- case WMT_PIN_GP6_VDOUT18:
- REG32_VAL(__GPIO_BASE+0x0044) |= (1<<(num-20)); //enable gpio
- REG32_VAL(__GPIO_BASE+0x0084) &= ~(1<<(num-20)); //set input
- break;
- case WMT_PIN_GP6_VDOUT19:
- REG32_VAL(__GPIO_BASE+0x0044) |= (1<<(num-20)); //enable gpio
- REG32_VAL(__GPIO_BASE+0x0084) &= ~(1<<(num-20)); //set input
- break;
- case WMT_PIN_GP6_VDOUT20:
- REG32_VAL(__GPIO_BASE+0x0044) |= (1<<(num-20)); //enable gpio
- REG32_VAL(__GPIO_BASE+0x0084) &= ~(1<<(num-20)); //set input
- break;
- case WMT_PIN_GP6_VDOUT21:
- REG32_VAL(__GPIO_BASE+0x0044) |= (1<<(num-20)); //enable gpio
- REG32_VAL(__GPIO_BASE+0x0084) &= ~(1<<(num-20)); //set input
- break;
-
- }
-}
-
-static void wmt_disable_irqinput(void)
-{
- int num = irq_gpio;
-
- if (num > /*19*/42)
- return;
- if (num < 20)
- {
- REG32_VAL(__GPIO_BASE+0x0040) &= ~(1<<num); //enable gpio
- REG32_VAL(__GPIO_BASE+0x0080) &= ~(1<<num); //set input
- }
-
- //GPIO GP5 Enable Register for VDOUT[15:8]
- //GPIO GP6 Enable Register for VDOUT[23:16]
-
- switch (num) //gpio 0-19 vdout11 12 18:21 -->gpio 31 32 38:41
- {
- case WMT_PIN_GP5_VDOUT11:
- REG32_VAL(__GPIO_BASE+0x0044) &= ~(1<<(num-20)); //disable gpio
- REG32_VAL(__GPIO_BASE+0x0084) &= ~(1<<(num-20)); //set input
- break;
- case WMT_PIN_GP5_VDOUT12:
- REG32_VAL(__GPIO_BASE+0x0044) &= ~(1<<(num-20)); //enable gpio
- REG32_VAL(__GPIO_BASE+0x0084) &= ~(1<<(num-20)); //set input
- break;
- case WMT_PIN_GP6_VDOUT18:
- REG32_VAL(__GPIO_BASE+0x0044) &= ~(1<<(num-20)); //enable gpio
- REG32_VAL(__GPIO_BASE+0x0084) &= ~(1<<(num-20)); //set input
- break;
- case WMT_PIN_GP6_VDOUT19:
- REG32_VAL(__GPIO_BASE+0x0044) &= ~(1<<(num-20)); //enable gpio
- REG32_VAL(__GPIO_BASE+0x0084) &= ~(1<<(num-20)); //set input
- break;
- case WMT_PIN_GP6_VDOUT20:
- REG32_VAL(__GPIO_BASE+0x0044) &= ~(1<<(num-20)); //enable gpio
- REG32_VAL(__GPIO_BASE+0x0084) &= ~(1<<(num-20)); //set input
- break;
- case WMT_PIN_GP6_VDOUT21:
- REG32_VAL(__GPIO_BASE+0x0044) &= ~(1<<(num-20)); //enable gpio
- REG32_VAL(__GPIO_BASE+0x0084) &= ~(1<<(num-20)); //set input
- break;
-
- }
-}
-
-static void wmt_pullup(void)
-{
- int num = irq_gpio;
-
- if(num >/*11*//*19*/42)
- return;
- if (num < 20)
- {
- REG32_VAL(__GPIO_BASE+0x04c0) |= (1<<num); //pull up!
- REG32_VAL(__GPIO_BASE+0x0480) |= (1<<num); //enable pull up/down
- }
- switch (num)
- { //vdout11 12 18:21-->gpio 31 32 38:41
- case WMT_PIN_GP5_VDOUT11:
- REG32_VAL(__GPIO_BASE+0x04c4) |= (1<<(num-20)); //pull up!
- REG32_VAL(__GPIO_BASE+0x0484) |= (1<<(num-20)); //enable pull up/down
- break;
- case WMT_PIN_GP5_VDOUT12:
- REG32_VAL(__GPIO_BASE+0x04c4) |= (1<<(num-20)); //pull up!
- REG32_VAL(__GPIO_BASE+0x0484) |= (1<<(num-20)); //enable pull up/down
- break;
- case WMT_PIN_GP6_VDOUT18:
- REG32_VAL(__GPIO_BASE+0x04c4) |= (1<<(num-20)); //pull up!
- REG32_VAL(__GPIO_BASE+0x0484) |= (1<<(num-20)); //enable pull up/down
- break;
- case WMT_PIN_GP6_VDOUT19:
- REG32_VAL(__GPIO_BASE+0x04c4) |= (1<<(num-20)); //pull up!
- REG32_VAL(__GPIO_BASE+0x0484) |= (1<<(num-20)); //enable pull up/down
- break;
- case WMT_PIN_GP6_VDOUT20:
- REG32_VAL(__GPIO_BASE+0x04c4) |= (1<<(num-20)); //pull up!
- REG32_VAL(__GPIO_BASE+0x0484) |= (1<<(num-20)); //enable pull up/down
- break;
- case WMT_PIN_GP6_VDOUT21:
- REG32_VAL(__GPIO_BASE+0x04c4) |= (1<<(num-20)); //pull up!
- REG32_VAL(__GPIO_BASE+0x0484) |= (1<<(num-20)); //enable pull up/down
- break;
-
- }
-}
-
-int wmt_set_gpirq(int type)
-{
- int shift;
- int offset;
- unsigned long reg;
- int num = irq_gpio;
-
- if(num >/*11*//*19*/42)
- return -1;
- //if (num > 9)
- //GPIO_PIN_SHARING_SEL_4BYTE_VAL &= ~BIT4; // gpio10,11 as gpio
-#if 0
- REG32_VAL(__GPIO_BASE+0x0040) &= ~(1<<num); // gpio disable
- REG32_VAL(__GPIO_BASE+0x0080) &= ~(1<<num); //set input
-#endif
- wmt_disable_irqinput();//replace 2014-8-22
-#if 0
- REG32_VAL(__GPIO_BASE+0x04c0) |= (1<<num); //pull up!
- REG32_VAL(__GPIO_BASE+0x0480) |= (1<<num); //enable pull up/down
-#endif
- wmt_pullup();//replace 2014-8-22
-
- //set gpio irq triger type
- if(num < 4){//[0,3]
- shift = num;
- offset = 0x0300;
- }else if(num >= 4 && num < 8){//[4,7]
- shift = num-4;
- offset = 0x0304;
- }else if (num >= 8 && num <12){// [8,11]
- shift = num-8;
- offset = 0x0308;
- }
- else if (num>=12 && num < 16)
- {
- shift = num -12;
- offset = 0x030c;
- }
- else if (num>=16 && num <20)
- {
- shift = num -16;
- offset = 0x0310;
- }
- else ////vdout11 12 18:21-->gpio 31 32 38:41
- { // 0x0314----0x0319
- switch (num)
- {
- case WMT_PIN_GP5_VDOUT11:
- shift = 0;
- offset = 0x0314;
- break;
- case WMT_PIN_GP5_VDOUT12:
- shift = 1;
- offset = 0x0314;
- break;
-
- case WMT_PIN_GP6_VDOUT18:
- shift = 2;
- offset = 0x0314;
- break;
-
- case WMT_PIN_GP6_VDOUT19:
- shift = 3;
- offset = 0x0314;
- break;
- case WMT_PIN_GP6_VDOUT20:
- shift = 0;
- offset = 0x0318;
- break;
-
- case WMT_PIN_GP6_VDOUT21:
-
- shift = 1;
- offset = 0x0318;
- break;
- }
- #if 0
- else if (num>=20 && num<24) //videoOut11 12 18 19
- {
- shift = num -20;
- offset = 0x0314;
- }
- else if (num>=24 && num<28) //videoOut20 21
- {
- shift = num -24;
- offset = 0x0318;
- }
- #endif
- }
-
- reg = REG32_VAL(__GPIO_BASE + offset);
-
- switch(type){
- case IRQ_TYPE_LEVEL_LOW:
- reg &= ~(1<<(shift*8+2));
- reg &= ~(1<<(shift*8+1));
- reg &= ~(1<<(shift*8));
- break;
- case IRQ_TYPE_LEVEL_HIGH:
- reg &= ~(1<<(shift*8+2));
- reg &= ~(1<<(shift*8+1));
- reg |= (1<<(shift*8));
- break;
- case IRQ_TYPE_EDGE_FALLING:
- reg &= ~(1<<(shift*8+2));
- reg |= (1<<(shift*8+1));
- reg &= ~(1<<(shift*8));
- break;
- case IRQ_TYPE_EDGE_RISING:
- reg &= ~(1<<(shift*8+2));
- reg |= (1<<(shift*8+1));
- reg |= (1<<(shift*8));
- break;
- default://both edge
- reg |= (1<<(shift*8+2));
- reg &= ~(1<<(shift*8+1));
- reg &= ~(1<<(shift*8));
- break;
-
- }
- //reg |= 1<<(shift*8+7);//enable interrupt
- reg &= ~(1<<(shift*8+7)); //disable int
-
- REG32_VAL(__GPIO_BASE + offset) = reg;
- wmt_clr_int(); //replace 2014-8-22
- //REG32_VAL(__GPIO_BASE+0x0360) = 1<<num; //clear interrupt status// 1 bit per int
- msleep(5);
- return 0;
-}
-
-int wmt_enable_gpirq(void)
-{
- int num = irq_gpio;
-
- if(num > /*11*/ /*19*/42)
- return -1;
-
- if(num<4)
- REG32_VAL(__GPIO_BASE+0x0300) |= 1<<(num*8+7); //enable interrupt
- else if(num >= 4 && num < 8)
- REG32_VAL(__GPIO_BASE+0x0304) |= 1<<((num-4)*8+7); //enable interrupt
- else if (num >= 8 && num < 12)
- REG32_VAL(__GPIO_BASE+0x0308) |= 1<<((num-8)*8+7); //enable interrupt
- else if (num >= 12 && num < 16)
- REG32_VAL(__GPIO_BASE+0x030c) |= 1<<((num-12)*8+7); //enable interrupt
- else if (num >= 16 && num < 20)
- REG32_VAL(__GPIO_BASE+0x0310) |= 1<<((num-16)*8+7); //enable interrupt
- else ////vdout11 12 18:21-->gpio 31 32 38:41
- { // 0x0314----0x0319
- switch (num)
- {
- case WMT_PIN_GP5_VDOUT11:
- REG32_VAL(__GPIO_BASE+0x0314) |= 1<<(0*8+7); //enable interrupt
-
- break;
- case WMT_PIN_GP5_VDOUT12:
- REG32_VAL(__GPIO_BASE+0x0314) |= 1<<(1*8+7); //enable interrupt
- break;
-
- case WMT_PIN_GP6_VDOUT18:
- REG32_VAL(__GPIO_BASE+0x0314) |= 1<<(2*8+7); //enable interrupt
- break;
-
- case WMT_PIN_GP6_VDOUT19:
- REG32_VAL(__GPIO_BASE+0x0314) |= 1<<(3*8+7); //enable interrupt
- break;
- case WMT_PIN_GP6_VDOUT20:
- REG32_VAL(__GPIO_BASE+0x0318) |= 1<<(0*8+7); //enable interrupt
-
- break;
-
- case WMT_PIN_GP6_VDOUT21:
-
- REG32_VAL(__GPIO_BASE+0x0318) |= 1<<(1*8+7); //enable interrupt
- break;
- }
-
- }
-
- return 0;
-}
-
-int wmt_disable_gpirq(void)
-{
- int num = irq_gpio;
-
- if(num > /*11*//*19*/42)
- return -1;
-
- if(num<4)
- REG32_VAL(__GPIO_BASE+0x0300) &= ~(1<<(num*8+7)); //disable interrupt
- else if(num >= 4 && num < 8)
- REG32_VAL(__GPIO_BASE+0x0304) &= ~(1<<((num-4)*8+7)); //enable interrupt
- else if (num >= 8 && num <12)
- REG32_VAL(__GPIO_BASE+0x0308) &= ~(1<<((num-8)*8+7)); //enable interrupt
- else if (num >= 12 && num <16)
- REG32_VAL(__GPIO_BASE+0x030c) &= ~(1<<((num-8)*8+7)); //enable interrupt
- else if (num >= 16 && num <20)
- REG32_VAL(__GPIO_BASE+0x0310) &= ~(1<<((num-8)*8+7)); //enable interrupt
- else ////vdout11 12 18:21-->gpio 31 32 38:41
- { // 0x0314----0x0319
- switch (num)
- {
- case WMT_PIN_GP5_VDOUT11:
- REG32_VAL(__GPIO_BASE+0x0314) &= ~(1<<(0*8+7)); //enable interrupt
-
- break;
- case WMT_PIN_GP5_VDOUT12:
- REG32_VAL(__GPIO_BASE+0x0314) &= ~(1<<(1*8+7)); //enable interrupt
- break;
-
- case WMT_PIN_GP6_VDOUT18:
- REG32_VAL(__GPIO_BASE+0x0314) &= ~(1<<(2*8+7)); //enable interrupt
- break;
-
- case WMT_PIN_GP6_VDOUT19:
- REG32_VAL(__GPIO_BASE+0x0314) &= ~(1<<(3*8+7)); //enable interrupt
- break;
- case WMT_PIN_GP6_VDOUT20:
- REG32_VAL(__GPIO_BASE+0x0318) &= ~(1<<(0*8+7)); //enable interrupt
-
- break;
-
- case WMT_PIN_GP6_VDOUT21:
-
- REG32_VAL(__GPIO_BASE+0x0318) &= ~(1<<(1*8+7)); //enable interrupt
- break;
- }
-
- }
-
- return 0;
-}
-
-static int pn544_wmt_is_int(int num)
-{
- if (num > 42)
- {
- return 0;
- }
- if (num < 20)
- {
- return REG32_VAL(__GPIO_BASE+0x0360) & (1<<num) ? 1 : 0;
- }
- else
- {
- switch (num)
- {
- case WMT_PIN_GP5_VDOUT11:
- return REG32_VAL(__GPIO_BASE+0x0360) & (1<<20) ? 1 : 0;
- break;
- case WMT_PIN_GP5_VDOUT12:
- return REG32_VAL(__GPIO_BASE+0x0360) & (1<<21) ? 1 : 0;
- break;
- case WMT_PIN_GP6_VDOUT18:
- return REG32_VAL(__GPIO_BASE+0x0360) & (1<<22) ? 1 : 0;
- break;
- case WMT_PIN_GP6_VDOUT19:
- return REG32_VAL(__GPIO_BASE+0x0360) & (1<<23) ? 1 : 0;
- break;
- case WMT_PIN_GP6_VDOUT20:
- return REG32_VAL(__GPIO_BASE+0x0360) & (1<<24) ? 1 : 0;
- break;
- case WMT_PIN_GP6_VDOUT21:
- return REG32_VAL(__GPIO_BASE+0x0360) & (1<<25) ? 1 : 0;
- break;
-
- }
-
- }
- //return (REG32_VAL(__GPIO_BASE+0x0360) & (1<<num)) ? 1: 0;
-}
-//*************add end
-
-
-static void pn544_disable_irq(struct pn544_dev *pn544_dev)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&pn544_dev->irq_enabled_lock, flags);
- if (pn544_dev->irq_enabled) {
- wmt_disable_gpirq();
- //disable_irq_nosync(pn544_dev->client->irq);
- pn544_dev->irq_enabled = false;
- }
- spin_unlock_irqrestore(&pn544_dev->irq_enabled_lock, flags);
-}
-
-static irqreturn_t pn544_dev_irq_handler(int irq, void *dev_id)
-{
- struct pn544_dev *pn544_dev = dev_id;
- //printk("<<<<<<<%s!\n", __func__);
-#if 0
- if (!gpio_get_value(pn544_dev->irq_gpio)) {
-
- return IRQ_NONE;
- //return IRQ_HANDLED;//???
- }
-#endif
- if (pn544_wmt_is_int(pn544_dev->irq_gpio))
- {
- wmt_clr_int();
- pn544_disable_irq(pn544_dev);
-
- //printk("<<<<<<<%s! wakeup reader!\n", __func__);
- /* Wake up waiting readers */
- wake_up(&pn544_dev->read_wq);
- return IRQ_HANDLED;
- }
- else
- {
- return IRQ_NONE;
- }
-}
-
-static ssize_t pn544_dev_read(struct file *filp, char __user *buf,
- size_t count, loff_t *offset)
-{
- struct pn544_dev *pn544_dev = filp->private_data;
- char tmp[MAX_BUFFER_SIZE];
- int ret,i;
-
- if (count > MAX_BUFFER_SIZE)
- count = MAX_BUFFER_SIZE;
-
- printk("%s : reading %zu bytes.\n", __func__, count);
-
- mutex_lock(&pn544_dev->read_mutex);
-
- printk("%s irq gpio %d val %d\n", __func__, pn544_dev->irq_gpio, gpio_get_value(pn544_dev->irq_gpio));
- if (/*!gpio_get_value(pn544_dev->irq_gpio)*/gpio_get_value(pn544_dev->irq_gpio)!=pn544_dev->irq_active) {
- printk("%s &&& waitting for interrupt!\n", __func__);
- if (filp->f_flags & O_NONBLOCK) {
- ret = -EAGAIN;
- goto fail;
- }
-
- while (1) {
- pn544_dev->irq_enabled = true;
- wmt_enable_gpirq();
- //enable_irq(pn544_dev->client->irq);
-
- printk("%s &&& enter waitting for interrupt!\n", __func__);
-
- ret = wait_event_interruptible(
- pn544_dev->read_wq,
- !pn544_dev->irq_enabled/*false??*/);
-
- /*ret = wait_event_interruptible(pn544_dev->read_wq,
- gpio_get_value(pn544_dev->irq_gpio));
- */
-
- pn544_disable_irq(pn544_dev);
-
- if (ret)
- goto fail;
- if (gpio_get_value(pn544_dev->irq_gpio)==pn544_dev->irq_active)
- break;
-
- pr_warning("%s: spurious interrupt detected\n", __func__);
- }
- }
-
- /* Read data */
- ret = i2c_master_recv(pn544_dev->client, tmp, count);
- mutex_unlock(&pn544_dev->read_mutex);
- /* pn544 seems to be slow in handling I2C read requests
- * so add 1ms delay after recv operation */
- udelay(1000);
-
- if (ret < 0) {
- pr_err("%s: i2c_master_recv returned %d\n", __func__, ret);
- return ret;
- }
- if (ret > count) {
- pr_err("%s: received too many bytes from i2c (%d)\n",
- __func__, ret);
- return -EIO;
- }
- if (copy_to_user(buf, tmp, ret)) {
- pr_warning("%s : failed to copy to user space\n", __func__);
- return -EFAULT;
- }
-
- printk("IFD->PC:");
- for(i = 0; i < ret; i++){
- printk(" %02X", tmp[i]);
- }
- printk("\n");
-
- return ret;
-
-fail:
- printk("%s fail end! ret :%x\n", __func__, ret);
- mutex_unlock(&pn544_dev->read_mutex);
- return ret;
-}
-
-static ssize_t pn544_dev_write(struct file *filp, const char __user *buf,
- size_t count, loff_t *offset)
-{
- struct pn544_dev *pn544_dev;
- char tmp[MAX_BUFFER_SIZE];
- int ret,i;
-
- pn544_dev = filp->private_data;
-
- if (count > MAX_BUFFER_SIZE)
- count = MAX_BUFFER_SIZE;
-
- if (copy_from_user(tmp, buf, count)) {
- pr_err("%s : failed to copy from user space\n", __func__);
- return -EFAULT;
- }
-
- printk("%s : writing %zu bytes.\n", __func__, count);
- /* Write data */
- ret = i2c_master_send(pn544_dev->client, tmp, count);
- if (ret != count) {
- pr_err("%s : i2c_master_send returned %d\n", __func__, ret);
- ret = -EIO;
- }
- printk("PC->IFD:");
- for(i = 0; i < count; i++){
- printk(" %02X", tmp[i]);
- }
- /* pn544 seems to be slow in handling I2C write requests
- * so add 1ms delay after I2C send oparation */
- udelay(1000);
-
- return ret;
-}
-
-static int pn544_dev_open(struct inode *inode, struct file *filp)
-{
- struct pn544_dev *pn544_dev = container_of(filp->private_data,
- struct pn544_dev,
- pn544_device);
-
- filp->private_data = pn544_dev;
-
- pr_debug("%s : %d,%d\n", __func__, imajor(inode), iminor(inode));
-
- return 0;
-}
-
-static /*int*/long pn544_dev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-{
- struct pn544_dev *pn544_dev = filp->private_data;
-
- switch (cmd) {
- case PN544_SET_PWR:
- if (arg == 2) {
- /* power on with firmware download (requires hw reset)
- */
- printk("%s power on with firmware\n", __func__);
- gpio_set_value(pn544_dev->ven_gpio, /*1*/pn544_dev->ven_active);
- msleep(20);
- if (pn544_dev->firm_gpio >= 0)
- gpio_set_value(pn544_dev->firm_gpio, /*1*/pn544_dev->firm_active);
- msleep(20);
- gpio_set_value(pn544_dev->ven_gpio, /*0*/!pn544_dev->ven_active);
- msleep(100);
- gpio_set_value(pn544_dev->ven_gpio, /*1*/pn544_dev->ven_active);
- msleep(20);
- pn544_dev->ven_on_off = 1;
- } else if (arg == 1) {
- /* power on */
- printk("%s power on\n", __func__);
- if (pn544_dev->firm_gpio >= 0)
- gpio_set_value(pn544_dev->firm_gpio, /*0*/!pn544_dev->firm_active);
- gpio_set_value(pn544_dev->ven_gpio, /*1*/pn544_dev->ven_active);
- msleep(100);
- pn544_dev->ven_on_off = 1;
- } else if (arg == 0) {
- /* power off */
- printk("%s power off ven %d \n", __func__, !pn544_dev->ven_active);
- if (pn544_dev->firm_gpio >= 0)
- gpio_set_value(pn544_dev->firm_gpio, /*0*/!pn544_dev->firm_active);
- gpio_set_value(pn544_dev->ven_gpio, /*0*/!pn544_dev->ven_active);
-
- pn544_dev->ven_on_off = 0;
- //gpio_set_value(pn544_dev->ven_gpio, 0);
- msleep(100);
- } else {
- printk("%s bad arg %u\n", __func__, arg);
- return -EINVAL;
- }
- break;
- default:
- printk("%s bad ioctl %u\n", __func__, cmd);
- return -EINVAL;
- }
-
- return 0;
-}
-
-static const struct file_operations pn544_dev_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .read = pn544_dev_read,
- .write = pn544_dev_write,
- .open = pn544_dev_open,
- .unlocked_ioctl = pn544_dev_ioctl,
-};
-
-
-static int pn544_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- int ret;
- struct pn544_nfc_platform_data *platform_data;
- struct pn544_dev *pn544_dev;
-
- platform_data = client->dev.platform_data;
-
- if (platform_data == NULL) {
- pr_err("%s : nfc probe fail\n", __func__);
- return -ENODEV;
- }
-
- printk("nfc probe step01 is ok\n");
-
- if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
- pr_err("%s : need I2C_FUNC_I2C\n", __func__);
- return -ENODEV;
- }
-
- printk("nfc probe step02 is ok\n");
-
- ret = gpio_request(platform_data->irq_gpio, "nfc_int");
- if (ret)
- return -ENODEV;
-
-
-
- ret = gpio_request(platform_data->ven_gpio, "nfc_ven");
- if (ret)
- goto err_ven;
-
-
- if (platform_data->firm_gpio >= 0)
- {
-
- ret = gpio_request(platform_data->firm_gpio, "nfc_firm");
- if (ret)
- goto err_firm;
-
- }
-
- pn544_dev = kzalloc(sizeof(*pn544_dev), GFP_KERNEL);
- if (pn544_dev == NULL) {
- dev_err(&client->dev,
- "failed to allocate memory for module data\n");
- ret = -ENOMEM;
- goto err_exit;
- }
-
- printk("nfc probe step04 is ok\n");
-
- //pn544_dev->irq_enable = platform_data->irq_enable;
- pn544_dev->irq_gpio = platform_data->irq_gpio;
- pn544_dev->irq_active = platform_data->irq_active;
-
- //pn544_dev->ven_enable = platform_data->ven_enable;
- pn544_dev->ven_gpio = platform_data->ven_gpio;
- pn544_dev->ven_active = platform_data->ven_active;
- pn544_dev->ven_on_off = 0;
- //pn544_dev->firm_enable = platform_data->firm_enable;
- pn544_dev->firm_gpio = platform_data->firm_gpio;
- pn544_dev->firm_active = platform_data->firm_active;
-
- pn544_dev->client = client;
-
- irq_gpio = pn544_dev->irq_gpio;
- /* init mutex and queues */
- init_waitqueue_head(&pn544_dev->read_wq);
- mutex_init(&pn544_dev->read_mutex);
- spin_lock_init(&pn544_dev->irq_enabled_lock);
-
- pn544_dev->pn544_device.minor = MISC_DYNAMIC_MINOR;
- switch (g_chip_nr)
- {
- case 7:
- pn544_dev->pn544_device.name = "pn547"; //"pn544" modify 2014-7-21
- break;
- case 4:
- pn544_dev->pn544_device.name = "pn544"; //"pn544" modify 2014-8-22
- break;
- }
- pn544_dev->pn544_device.fops = &pn544_dev_fops;
-
- ret = misc_register(&pn544_dev->pn544_device);
- if (ret) {
- pr_err("%s : misc_register failed\n", __FILE__);
- goto err_misc_register;
- }
- printk("nfc probe step05 is ok\n");
-
- /* request irq. the irq is set whenever the chip has data available
- * for reading. it is cleared when all data has been read.
- */
-
-
- gpio_direction_output(platform_data->ven_gpio,/*0*/ !platform_data->ven_active);
-
- if (platform_data->firm_gpio >= 0)
- gpio_direction_output(platform_data->firm_gpio,/*0*/!platform_data->firm_active);
- //s3c_gpio_setpull(platform_data->ven_gpio, S3C_GPIO_PULL_UP);
- //s3c_gpio_setpull(platform_data->firm_gpio, S3C_GPIO_PULL_DOWN);
-
- //eint16 setting
-
- gpio_direction_input(platform_data->irq_gpio);
- //wmt_gpio_setpull(platform_data->irq_gpio, WMT_GPIO_PULL_UP);
- if (platform_data->irq_active)
- {
- printk("%s irq pull down!\n", __func__);
- wmt_gpio_setpull(platform_data->irq_gpio, WMT_GPIO_PULL_DOWN); //modify 2014-7-16
- }
- else
- {
- printk("%s irq pull up!\n", __func__);
- wmt_gpio_setpull(platform_data->irq_gpio, WMT_GPIO_PULL_UP);
- }
- //s3c_gpio_setpull(platform_data->irq_gpio, S3C_GPIO_PULL_UP);
-
-
- pr_info("%s : requesting IRQ %d\n", __func__, client->irq);
- pn544_dev->irq_enabled = true;
-
- ret = request_irq(client->irq, pn544_dev_irq_handler,
- /*platform_data->irq_active?IRQF_TRIGGER_HIGH:IRQF_TRIGGER_LOW*/IRQF_SHARED, \
- client->name, pn544_dev);//IRQF_TRIGGER_RISING IRQF_TRIGGER_HIGH
- if (ret) {
- printk(/*&client->dev, */"request_irq failed\n");
- goto err_request_irq_failed;
- }
- printk("nfc probe step06 is ok\n");
- //add 2014-7-16 for gpio irq config
- wmt_set_irqinput();
- wmt_set_gpirq(platform_data->irq_active?IRQF_TRIGGER_HIGH:IRQF_TRIGGER_LOW); //IRQF_TRIGGER_HIGH
- //wmt_enable_gpirq();
- //add end
-
- pn544_disable_irq(pn544_dev);
- i2c_set_clientdata(client, pn544_dev);
-
- //add debug 2014-7-10
-#if 0
- printk("%s power on\n", __func__);
- gpio_set_value(pn544_dev->firm_gpio, 0);
- gpio_set_value(pn544_dev->ven_gpio, 1);
- msleep(10);
-
- int maddr = 1;
- char mbuf[2] = {0};
- for (maddr=1; maddr<0x7f; maddr++)
- {
- mbuf[0] = maddr;
- /* Write data */
- //pn544_dev->client->addr = maddr;
- ret = i2c_master_send(pn544_dev->client, mbuf, 1);
- if (ret != 1) {
- pr_err("%s : reg 0x%x i2c_master_send returned %d\n", __func__, maddr, ret);
- //ret = -EIO;
- }
- else
- {
- pr_err("%s ok!!!: reg 0x%x i2c_master_send returned %d\n", __func__, maddr, ret);
- //break;
- }
-
- struct i2c_msg msg[2] = {
- {.addr = client->addr,
- .flags = 0|I2C_M_NOSTART,
- .len = 1,
- .buf = &mbuf[0],
- },
- { .addr = client->addr,
- .flags = I2C_M_RD,
- .len = 1,
- .buf = &mbuf[1],
- },
- };
-
- ret = i2c_transfer(client->adapter, msg, 2);
-
- //ret = i2c_master_recv(pn544_dev->client, mbuf, 1);
- if (ret != 2) {
- pr_err("%s : addr 0x%x i2c_master_recv %d returned %d\n", __func__, maddr, mbuf[1], ret);
- //ret = -EIO;
- }
- else
- {
- pr_err("%s ok!!!: addr 0x%x i2c_master_recv %d returned %d\n", __func__, maddr, mbuf[1], ret);
- //break;
- }
-
- }
-#endif
- //add end
-
- printk("nfc probe step07 is ok\n");
-
- return 0;
-
-err_request_irq_failed:
- misc_deregister(&pn544_dev->pn544_device);
-err_misc_register:
- mutex_destroy(&pn544_dev->read_mutex);
- kfree(pn544_dev);
-err_exit:
- if (platform_data->firm_gpio >= 0)
- gpio_free(platform_data->firm_gpio);
-err_firm:
-
- gpio_free(platform_data->ven_gpio);
-err_ven:
-
- gpio_free(platform_data->irq_gpio);
- return ret;
-}
-
-static int pn544_remove(struct i2c_client *client)
-{
- struct pn544_dev *pn544_dev;
-
- pn544_dev = i2c_get_clientdata(client);
- free_irq(client->irq, pn544_dev);
- misc_deregister(&pn544_dev->pn544_device);
- mutex_destroy(&pn544_dev->read_mutex);
- gpio_free(pn544_dev->irq_gpio);
- gpio_free(pn544_dev->ven_gpio);
- gpio_free(pn544_dev->firm_gpio);
- kfree(pn544_dev);
-
- return 0;
-}
-
-static const struct i2c_device_id pn544_id[] = {
- { "pn544", 0 },
- { }
-};
-
-static int pn544_suspend(struct i2c_client *client, pm_message_t mesg)
-{
- struct pn544_dev *pn544_dev;
-
- pn544_dev = i2c_get_clientdata(client);
- printk("\n%s on_off %d\n", __func__, pn544_dev->ven_on_off);
- return 0;
-}
-
-static int pn544_resume(struct i2c_client *client)
-{
- struct pn544_dev *pn544_dev;
-
- pn544_dev = i2c_get_clientdata(client);
-
- printk("%s on_off %d\n", __func__, pn544_dev->ven_on_off);
-
- gpio_direction_input(pn544_dev->irq_gpio);
- //wmt_gpio_setpull(platform_data->irq_gpio, WMT_GPIO_PULL_UP);
- if (pn544_dev->irq_active)
- wmt_gpio_setpull(pn544_dev->irq_gpio, WMT_GPIO_PULL_DOWN); //modify 2014-7-16
- else
- wmt_gpio_setpull(pn544_dev->irq_gpio, WMT_GPIO_PULL_UP);
-
- //add 2014-7-16 for gpio irq config
- wmt_set_irqinput();
- wmt_set_gpirq(pn544_dev->irq_active?IRQF_TRIGGER_HIGH:IRQF_TRIGGER_LOW); //IRQF_TRIGGER_HIGH
- //wmt_enable_gpirq();
- //add end
-
- pn544_disable_irq(pn544_dev);
-
- printk("%s active %d, !active %d\n", __func__, pn544_dev->ven_active, !pn544_dev->ven_active);
- if (pn544_dev->ven_on_off)
- gpio_set_value(pn544_dev->ven_gpio, pn544_dev->ven_active);
- else
- gpio_set_value(pn544_dev->ven_gpio, !pn544_dev->ven_active);
-
- //gpio_set_value(pn544_dev->ven_gpio, 0);
-
- return 0;
-}
-static struct i2c_driver pn544_driver = {
- .id_table = pn544_id,
- .probe = pn544_probe,
- .remove = pn544_remove,
- .suspend = pn544_suspend,
- .resume = pn544_resume,
- .driver = {
- .owner = THIS_MODULE,
- .name = "pn544",
- },
-};
-
-/*
- * module load/unload record keeping
- */
-
-static struct pn544_nfc_platform_data pn544_pdata = {
- //.irq_enable = 1,
- .irq_gpio = WMT_PIN_GP0_GPIO0,
- .irq_active = 1,
- //.ven_enable = 1,
- .ven_gpio= WMT_PIN_GP18_UART0RTS, // WMT_PIN_GP18_UART0RTS WMT_PIN_GP0_GPIO1
- .ven_active = 1,
- //.firm_enable = 1,
- .firm_gpio=WMT_PIN_GP0_GPIO1, //WMT_PIN_GP0_GPIO2,
- .firm_active = 1,
-};
-static int g_i2c_adapter = 0;
-static int g_i2c_addr = 0x28;
-static int get_board_info(void)
-{
- int ret;
- char buf[100] = {0};
- int len = sizeof(buf);
-
- char *pbuf = "wmt.nfc.pn54x"; // wmt.nfc.pn547
- printk("%s\n", __func__);
- //wmt.nfc.pn54x 4:43:0:39:1:1:1:132:1 2b-->43 wmt.nfc.pn54x 4:43:0:39:1:1:0:132:1
- ret = wmt_getsyspara(pbuf, buf, &len);
- if (!ret)
- {
- printk("%s %s:%s\n", __func__, pbuf, buf);//irq ven firm
-
- ret = sscanf(buf, "%d:%d:%d:%d:%d:%d:%d:%d:%d", \
- &g_chip_nr, &g_i2c_addr, &g_i2c_adapter, \
- &pn544_pdata.irq_gpio, &pn544_pdata.irq_active, \
- &pn544_pdata.ven_gpio, &pn544_pdata.ven_active, \
- &pn544_pdata.firm_gpio, &pn544_pdata.firm_active);
-
- printk("chip nr %d,i2c addr %d adapter %d, irq gpio %d active %d, ven %d %d, firm %d %d\n", \
- g_chip_nr, g_i2c_addr, g_i2c_adapter, \
- pn544_pdata.irq_gpio, pn544_pdata.irq_active, \
- pn544_pdata.ven_gpio, pn544_pdata.ven_active, \
- pn544_pdata.firm_gpio, pn544_pdata.firm_active);
-
- return 0;
- }
- else
- {
- printk("%s not get %s, use default\n", __func__, pbuf);
- return -1;
- }
-
- return 0;
-}
-
-static int __init pn544_dev_init(void)
-{
- //pr_info("Loading pn544 driver\n");
-
- int r;
- struct i2c_adapter *adapter;
-
-
-
- struct i2c_board_info wmt_pn544_bi = {
- .type = PN544_DRIVER_NAME,
- .flags = 0x00,
- .addr = CLIENT_ADDR,
- .platform_data = &pn544_pdata, //custom 2014-7-25
- .archdata = NULL,
- .irq = IRQ_GPIO,
- };
- //wmt_pn544_bi.addr = g_i2c_addr;
-
- pr_debug(DRIVER_DESC ": %s\n", __func__);
- r = get_board_info();
- if (r < 0)
- {
- printk("%s no env!!\n", __func__);
- return r;
- }
- wmt_pn544_bi.addr = g_i2c_addr;
- adapter = i2c_get_adapter(/*WMT_PN544_I2C_CHANNEL*/g_i2c_adapter);
- if (adapter == NULL) {
- printk("can not get i2c adapter, client address error");
- return -ENODEV;
- }
-
- pn544_client = i2c_new_device(adapter, &wmt_pn544_bi);
- if ( pn544_client == NULL) {
- printk("allocate i2c client failed");
- return -ENOMEM;
- }
-
- i2c_put_adapter(adapter);
-
- r = i2c_add_driver(&pn544_driver);
- if (r) {
- pr_err(PN544_DRIVER_NAME ": driver registration failed\n");
- return r;
- }
-
- return 0;
- //return i2c_add_driver(&pn544_driver);
-}
-module_init(pn544_dev_init);
-
-static void __exit pn544_dev_exit(void)
-{
- pr_info("Unloading pn544 driver\n");
- i2c_del_driver(&pn544_driver);
-
- i2c_unregister_device(pn544_client);
-}
-module_exit(pn544_dev_exit);
-
-MODULE_AUTHOR("Sylvain Fonteneau");
-MODULE_DESCRIPTION("NFC PN544 driver");
-MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2025-02-14 04:24:06 +0000