From f07839f5a31fc64cb564b81dd9057cc01092f75c Mon Sep 17 00:00:00 2001
From: dengwei1 <dengwei1@motorola.com>
Date: Mon, 5 Nov 2018 11:26:06 +0800
Subject: [PATCH] channel: input add ilitek touch fw proc file

input add ilitek touch fw proc file
to get the fw state.

Change-Id: I0b20c52930eca68ffabfe2100771f0d34437e48c
Signed-off-by: dengwei1 <dengwei1@motorola.com>
Reviewed-on: https://gerrit.mot.com/1264419
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com>
Submit-Approved: Jira Key
---
 drivers/input/touchscreen/ilitek_mmi/common.h |  1 +
 .../touchscreen/ilitek_mmi/core/config.c      | 21 ++++++++++++
 .../touchscreen/ilitek_mmi/core/config.h      |  1 +
 .../input/touchscreen/ilitek_mmi/userspace.c  | 32 +++++++++++++++++++
 4 files changed, 55 insertions(+)

diff --git a/drivers/input/touchscreen/ilitek_mmi/common.h b/drivers/input/touchscreen/ilitek_mmi/common.h
index 67b974e77c97..f3ec43e8193a 100644
--- a/drivers/input/touchscreen/ilitek_mmi/common.h
+++ b/drivers/input/touchscreen/ilitek_mmi/common.h
@@ -204,6 +204,7 @@ enum ili9881_types {
 #define ILI9881_ICE_MODE_ADDR	0x181062
 #define ILI9881_PID_ADDR		0x4009C
 #define ILI9881_WDT_ADDR		0x5100C
+#define ILI9881_PC_COUNTER_ADDR	0x44008
 
 /*
  * Other settings
diff --git a/drivers/input/touchscreen/ilitek_mmi/core/config.c b/drivers/input/touchscreen/ilitek_mmi/core/config.c
index cbb6a9d351bf..727f49b56a6e 100644
--- a/drivers/input/touchscreen/ilitek_mmi/core/config.c
+++ b/drivers/input/touchscreen/ilitek_mmi/core/config.c
@@ -118,6 +118,27 @@ static uint32_t check_chip_id(uint32_t pid_data)
 	return 0;
 }
 
+uint32_t core_config_read_pc_counter(void)
+{
+	uint32_t pc_cnt = 0x0;
+
+	if (!core_config->icemodeenable) {
+		if (core_config_ice_mode_enable() < 0)
+			ipio_err("Failed to enter ice mode\n");
+	}
+
+	/* Read fw status if it was hanging on a unknown status */
+	pc_cnt = core_config_ice_mode_read(ILI9881_PC_COUNTER_ADDR);
+	ipio_info("pc counter = 0x%x\n", pc_cnt);
+
+	if (core_config->icemodeenable) {
+		if (core_config_ice_mode_disable() < 0)
+			ipio_err("Failed to disable ice mode\n");
+	}
+	return pc_cnt;
+}
+EXPORT_SYMBOL(core_config_read_pc_counter);
+
 /*
  * Read & Write one byte in ICE Mode.
  */
diff --git a/drivers/input/touchscreen/ilitek_mmi/core/config.h b/drivers/input/touchscreen/ilitek_mmi/core/config.h
index 0359487fd6aa..b3b63cb810e2 100644
--- a/drivers/input/touchscreen/ilitek_mmi/core/config.h
+++ b/drivers/input/touchscreen/ilitek_mmi/core/config.h
@@ -98,6 +98,7 @@ extern int core_config_ice_mode_write(uint32_t addr, uint32_t data, uint32_t siz
 extern uint32_t core_config_read_write_onebyte(uint32_t addr);
 extern int core_config_ice_mode_disable(void);
 extern int core_config_ice_mode_enable(void);
+extern uint32_t core_config_read_pc_counter(void);
 
 /* Touch IC status */
 extern int core_config_set_watch_dog(bool enable);
diff --git a/drivers/input/touchscreen/ilitek_mmi/userspace.c b/drivers/input/touchscreen/ilitek_mmi/userspace.c
index 4c46a5af8b51..60069e0ab6d9 100644
--- a/drivers/input/touchscreen/ilitek_mmi/userspace.c
+++ b/drivers/input/touchscreen/ilitek_mmi/userspace.c
@@ -144,6 +144,33 @@ int str2hex(char *str)
 
 EXPORT_SYMBOL(str2hex);
 
+static ssize_t ilitek_proc_fw_pc_counter_read(struct file *pFile, char __user *buf, size_t nCount, loff_t *pos)
+{
+	uint32_t pc;
+
+	if (*pos != 0)
+		return 0;
+
+	memset(g_user_buf, 0, USER_STR_BUFF * sizeof(unsigned char));
+
+	mutex_lock(&ipd->plat_mutex);
+
+	pc = core_config_read_pc_counter();
+
+	mutex_unlock(&ipd->plat_mutex);
+
+	nCount = snprintf(g_user_buf, PAGE_SIZE, "pc counter = 0x%x\n", pc);
+
+	pc = copy_to_user(buf, g_user_buf, nCount);
+	if (pc < 0) {
+		ipio_err("Failed to copy data to user space");
+	}
+
+	*pos += nCount;
+
+	return nCount;
+}
+
 static ssize_t ilitek_proc_debug_switch_read(struct file *pFile,
 					     char __user *buff, size_t nCount,
 					     loff_t *pPos)
@@ -1564,6 +1591,10 @@ struct file_operations proc_debug_message_switch_fops = {
 	.read = ilitek_proc_debug_switch_read,
 };
 
+struct file_operations proc_fw_pc_counter_fops = {
+	.read = ilitek_proc_fw_pc_counter_read,
+};
+
 /**
  * This struct lists all file nodes will be created under /proc filesystem.
  *
@@ -1593,6 +1624,7 @@ proc_node_t proc_table[] = {
 	{"oppo_mp_lcm_off", NULL, &proc_oppo_mp_lcm_off_fops, false},
 	{"debug_message", NULL, &proc_debug_message_fops, false},
 	{"debug_message_switch", NULL, &proc_debug_message_switch_fops, false},
+	{"fw_pc_counter", NULL, &proc_fw_pc_counter_fops, false},
 };
 
 #define NETLINK_USER 21