581 lines
14 KiB
C
581 lines
14 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2016 MediaTek Inc.
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*/
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include "nt36xxx.h"
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#if NVT_TOUCH_EXT_PROC
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#define NVT_FW_VERSION "nvt_fw_version"
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#define NVT_BASELINE "nvt_baseline"
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#define NVT_RAW "nvt_raw"
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#define NVT_DIFF "nvt_diff"
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#define BUS_TRANSFER_LENGTH 256
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#define NORMAL_MODE 0x00
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#define TEST_MODE_1 0x21
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#define TEST_MODE_2 0x22
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#define HANDSHAKING_HOST_READY 0xBB
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#define XDATA_SECTOR_SIZE 256
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static uint8_t xdata_tmp[2048] = { 0 };
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static int32_t xdata[2048] = { 0 };
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static struct proc_dir_entry *NVT_proc_fw_version_entry;
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static struct proc_dir_entry *NVT_proc_baseline_entry;
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static struct proc_dir_entry *NVT_proc_raw_entry;
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static struct proc_dir_entry *NVT_proc_diff_entry;
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/*******************************************************
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Description:
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Novatek touchscreen change mode function.
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return:
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n.a.
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*******************************************************/
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void nvt_change_mode(uint8_t mode)
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{
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uint8_t buf[8] = { 0 };
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//---set xdata index to EVENT BUF ADDR---
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nvt_set_page(ts->mmap->EVENT_BUF_ADDR | EVENT_MAP_HOST_CMD);
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//---set mode---
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buf[0] = EVENT_MAP_HOST_CMD;
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buf[1] = mode;
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CTP_SPI_WRITE(ts->client, buf, 2);
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if (mode == NORMAL_MODE) {
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buf[0] = EVENT_MAP_HANDSHAKING_or_SUB_CMD_BYTE;
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buf[1] = HANDSHAKING_HOST_READY;
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CTP_SPI_WRITE(ts->client, buf, 2);
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msleep(20);
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}
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}
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/*******************************************************
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Description:
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Novatek touchscreen get firmware pipe function.
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return:
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Executive outcomes. 0---pipe 0. 1---pipe 1.
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*******************************************************/
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uint8_t nvt_get_fw_pipe(void)
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{
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uint8_t buf[8] = { 0 };
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//---set xdata index to EVENT BUF ADDR---
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nvt_set_page(ts->mmap->EVENT_BUF_ADDR | EVENT_MAP_HANDSHAKING_or_SUB_CMD_BYTE);
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//---read fw status---
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buf[0] = EVENT_MAP_HANDSHAKING_or_SUB_CMD_BYTE;
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buf[1] = 0x00;
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CTP_SPI_READ(ts->client, buf, 2);
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//NVT_LOG("FW pipe=%d, buf[1]=0x%02X\n", (buf[1]&0x01), buf[1]);
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return (buf[1] & 0x01);
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}
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/*******************************************************
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Description:
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Novatek touchscreen read meta data function.
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return:
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n.a.
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*******************************************************/
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void nvt_read_mdata(uint32_t xdata_addr, uint32_t xdata_btn_addr)
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{
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int32_t i = 0;
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int32_t j = 0;
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int32_t k = 0;
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uint8_t buf[BUS_TRANSFER_LENGTH + 1] = { 0 };
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uint32_t head_addr = 0;
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int32_t dummy_len = 0;
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int32_t data_len = 0;
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int32_t residual_len = 0;
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//---set xdata sector address & length---
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head_addr = xdata_addr - (xdata_addr % XDATA_SECTOR_SIZE);
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dummy_len = xdata_addr - head_addr;
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data_len = ts->x_num * ts->y_num * 2;
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residual_len = (head_addr + dummy_len + data_len) % XDATA_SECTOR_SIZE;
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//read xdata : step 1
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for (i = 0; i < ((dummy_len + data_len) / XDATA_SECTOR_SIZE); i++) {
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//---change xdata index---
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nvt_set_page(head_addr + XDATA_SECTOR_SIZE * i);
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//---read xdata by BUS_TRANSFER_LENGTH
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for (j = 0; j < (XDATA_SECTOR_SIZE / BUS_TRANSFER_LENGTH); j++) {
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//---read data---
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buf[0] = BUS_TRANSFER_LENGTH * j;
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CTP_SPI_READ(ts->client, buf, BUS_TRANSFER_LENGTH + 1);
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//---copy buf to xdata_tmp---
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for (k = 0; k < BUS_TRANSFER_LENGTH; k++) {
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xdata_tmp[XDATA_SECTOR_SIZE * i + BUS_TRANSFER_LENGTH * j + k] =
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buf[k + 1];
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}
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}
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}
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//read xdata : step2
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if (residual_len != 0) {
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//---change xdata index---
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nvt_set_page(xdata_addr + data_len - residual_len);
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//---read xdata by BUS_TRANSFER_LENGTH
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for (j = 0; j < (residual_len / BUS_TRANSFER_LENGTH + 1); j++) {
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//---read data---
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buf[0] = BUS_TRANSFER_LENGTH * j;
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CTP_SPI_READ(ts->client, buf, BUS_TRANSFER_LENGTH + 1);
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//---copy buf to xdata_tmp---
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for (k = 0; k < BUS_TRANSFER_LENGTH; k++) {
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xdata_tmp[(dummy_len + data_len - residual_len) +
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BUS_TRANSFER_LENGTH * j + k] = buf[k + 1];
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}
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}
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}
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//---remove dummy data and 2bytes-to-1data---
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for (i = 0; i < (data_len / 2); i++) {
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xdata[i] =
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(int16_t) (xdata_tmp[dummy_len + i * 2] +
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256 * xdata_tmp[dummy_len + i * 2 + 1]);
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}
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#if TOUCH_KEY_NUM > 0
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//read button xdata : step3
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//---change xdata index---
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nvt_set_page(xdata_btn_addr);
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//---read data---
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buf[0] = (xdata_btn_addr & 0xFF);
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CTP_SPI_READ(ts->client, buf, (TOUCH_KEY_NUM * 2 + 1));
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//---2bytes-to-1data---
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for (i = 0; i < TOUCH_KEY_NUM; i++) {
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xdata[ts->x_num * ts->y_num + i] =
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(int16_t) (buf[1 + i * 2] + 256 * buf[1 + i * 2 + 1]);
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}
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#endif
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//---set xdata index to EVENT BUF ADDR---
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nvt_set_page(ts->mmap->EVENT_BUF_ADDR);
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}
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/*******************************************************
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Description:
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Novatek touchscreen get meta data function.
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return:
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n.a.
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*******************************************************/
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void nvt_get_mdata(int32_t *buf, uint8_t *m_x_num, uint8_t *m_y_num)
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{
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*m_x_num = ts->x_num;
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*m_y_num = ts->y_num;
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memcpy(buf, xdata, ((ts->x_num * ts->y_num + TOUCH_KEY_NUM) * sizeof(int32_t)));
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}
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/*******************************************************
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Description:
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Novatek touchscreen firmware version show function.
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return:
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Executive outcomes. 0---succeed.
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*******************************************************/
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static int32_t c_fw_version_show(struct seq_file *m, void *v)
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{
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seq_printf(m, "fw_ver=%d, x_num=%d, y_num=%d, button_num=%d\n", ts->fw_ver, ts->x_num,
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ts->y_num, ts->max_button_num);
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return 0;
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}
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/*******************************************************
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Description:
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Novatek touchscreen xdata sequence print show
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function.
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return:
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Executive outcomes. 0---succeed.
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*******************************************************/
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static int32_t c_show(struct seq_file *m, void *v)
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{
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int32_t i = 0;
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int32_t j = 0;
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for (i = 0; i < ts->y_num; i++) {
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for (j = 0; j < ts->x_num; j++) {
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seq_printf(m, "%5d, ", xdata[i * ts->x_num + j]);
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}
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seq_puts(m, "\n");
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}
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#if TOUCH_KEY_NUM > 0
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for (i = 0; i < TOUCH_KEY_NUM; i++) {
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seq_printf(m, "%5d, ", xdata[ts->x_num * ts->y_num + i]);
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}
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seq_puts(m, "\n");
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#endif
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seq_printf(m, "\n\n");
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return 0;
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}
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/*******************************************************
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Description:
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Novatek touchscreen xdata sequence print start
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function.
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return:
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Executive outcomes. 1---call next function.
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NULL---not call next function and sequence loop
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stop.
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*******************************************************/
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static void *c_start(struct seq_file *m, loff_t *pos)
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{
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return *pos < 1 ? (void *)1 : NULL;
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}
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/*******************************************************
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Description:
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Novatek touchscreen xdata sequence print next
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function.
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return:
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Executive outcomes. NULL---no next and call sequence
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stop function.
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*******************************************************/
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static void *c_next(struct seq_file *m, void *v, loff_t *pos)
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{
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++*pos;
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return NULL;
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}
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/*******************************************************
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Description:
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Novatek touchscreen xdata sequence print stop
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function.
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return:
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n.a.
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*******************************************************/
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static void c_stop(struct seq_file *m, void *v)
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{
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return;
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}
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const struct seq_operations nvt_fw_version_seq_ops = {
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.start = c_start,
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.next = c_next,
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.stop = c_stop,
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.show = c_fw_version_show
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};
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const struct seq_operations nvt_seq_ops = {
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.start = c_start,
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.next = c_next,
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.stop = c_stop,
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.show = c_show
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};
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/*******************************************************
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Description:
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Novatek touchscreen /proc/nvt_fw_version open
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function.
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return:
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n.a.
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*******************************************************/
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static int32_t nvt_fw_version_open(struct inode *inode, struct file *file)
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{
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if (mutex_lock_interruptible(&ts->lock)) {
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return -ERESTARTSYS;
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}
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NVT_LOG("++\n");
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#if NVT_TOUCH_ESD_PROTECT
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nvt_esd_check_enable(false);
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#endif /* #if NVT_TOUCH_ESD_PROTECT */
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if (nvt_get_fw_info()) {
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mutex_unlock(&ts->lock);
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return -EAGAIN;
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}
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mutex_unlock(&ts->lock);
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NVT_LOG("--\n");
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return seq_open(file, &nvt_fw_version_seq_ops);
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}
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static const struct file_operations nvt_fw_version_fops = {
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.owner = THIS_MODULE,
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.open = nvt_fw_version_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = seq_release,
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};
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/*******************************************************
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Description:
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Novatek touchscreen /proc/nvt_baseline open function.
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return:
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Executive outcomes. 0---succeed.
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*******************************************************/
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static int32_t nvt_baseline_open(struct inode *inode, struct file *file)
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{
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if (mutex_lock_interruptible(&ts->lock)) {
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return -ERESTARTSYS;
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}
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NVT_LOG("++\n");
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#if NVT_TOUCH_ESD_PROTECT
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nvt_esd_check_enable(false);
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#endif /* #if NVT_TOUCH_ESD_PROTECT */
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if (nvt_clear_fw_status()) {
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mutex_unlock(&ts->lock);
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return -EAGAIN;
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}
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nvt_change_mode(TEST_MODE_2);
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if (nvt_check_fw_status()) {
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mutex_unlock(&ts->lock);
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return -EAGAIN;
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}
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if (nvt_get_fw_info()) {
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mutex_unlock(&ts->lock);
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return -EAGAIN;
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}
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nvt_read_mdata(ts->mmap->BASELINE_ADDR, ts->mmap->BASELINE_BTN_ADDR);
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nvt_change_mode(NORMAL_MODE);
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mutex_unlock(&ts->lock);
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NVT_LOG("--\n");
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return seq_open(file, &nvt_seq_ops);
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}
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static const struct file_operations nvt_baseline_fops = {
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.owner = THIS_MODULE,
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.open = nvt_baseline_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = seq_release,
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};
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/*******************************************************
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Description:
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Novatek touchscreen /proc/nvt_raw open function.
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return:
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Executive outcomes. 0---succeed.
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*******************************************************/
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static int32_t nvt_raw_open(struct inode *inode, struct file *file)
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{
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if (mutex_lock_interruptible(&ts->lock)) {
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return -ERESTARTSYS;
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}
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NVT_LOG("++\n");
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#if NVT_TOUCH_ESD_PROTECT
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nvt_esd_check_enable(false);
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#endif /* #if NVT_TOUCH_ESD_PROTECT */
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if (nvt_clear_fw_status()) {
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mutex_unlock(&ts->lock);
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return -EAGAIN;
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}
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nvt_change_mode(TEST_MODE_2);
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if (nvt_check_fw_status()) {
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mutex_unlock(&ts->lock);
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return -EAGAIN;
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}
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if (nvt_get_fw_info()) {
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mutex_unlock(&ts->lock);
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return -EAGAIN;
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}
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if (nvt_get_fw_pipe() == 0)
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nvt_read_mdata(ts->mmap->RAW_PIPE0_ADDR, ts->mmap->RAW_BTN_PIPE0_ADDR);
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else
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nvt_read_mdata(ts->mmap->RAW_PIPE1_ADDR, ts->mmap->RAW_BTN_PIPE1_ADDR);
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nvt_change_mode(NORMAL_MODE);
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mutex_unlock(&ts->lock);
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NVT_LOG("--\n");
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return seq_open(file, &nvt_seq_ops);
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}
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static const struct file_operations nvt_raw_fops = {
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.owner = THIS_MODULE,
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.open = nvt_raw_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = seq_release,
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};
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/*******************************************************
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Description:
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Novatek touchscreen /proc/nvt_diff open function.
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return:
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Executive outcomes. 0---succeed. negative---failed.
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*******************************************************/
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static int32_t nvt_diff_open(struct inode *inode, struct file *file)
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{
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if (mutex_lock_interruptible(&ts->lock)) {
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return -ERESTARTSYS;
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}
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NVT_LOG("++\n");
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#if NVT_TOUCH_ESD_PROTECT
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nvt_esd_check_enable(false);
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#endif /* #if NVT_TOUCH_ESD_PROTECT */
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if (nvt_clear_fw_status()) {
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mutex_unlock(&ts->lock);
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return -EAGAIN;
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}
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nvt_change_mode(TEST_MODE_2);
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if (nvt_check_fw_status()) {
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mutex_unlock(&ts->lock);
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return -EAGAIN;
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}
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if (nvt_get_fw_info()) {
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mutex_unlock(&ts->lock);
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return -EAGAIN;
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}
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if (nvt_get_fw_pipe() == 0)
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nvt_read_mdata(ts->mmap->DIFF_PIPE0_ADDR, ts->mmap->DIFF_BTN_PIPE0_ADDR);
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else
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nvt_read_mdata(ts->mmap->DIFF_PIPE1_ADDR, ts->mmap->DIFF_BTN_PIPE1_ADDR);
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nvt_change_mode(NORMAL_MODE);
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mutex_unlock(&ts->lock);
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NVT_LOG("--\n");
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return seq_open(file, &nvt_seq_ops);
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}
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static const struct file_operations nvt_diff_fops = {
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.owner = THIS_MODULE,
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.open = nvt_diff_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = seq_release,
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};
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/*******************************************************
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Description:
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Novatek touchscreen extra function proc. file node
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initial function.
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return:
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Executive outcomes. 0---succeed. -12---failed.
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*******************************************************/
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int32_t nvt_extra_proc_init(void)
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{
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NVT_proc_fw_version_entry = proc_create(NVT_FW_VERSION, 0444, NULL, &nvt_fw_version_fops);
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if (NVT_proc_fw_version_entry == NULL) {
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NVT_ERR("create proc/%s Failed!\n", NVT_FW_VERSION);
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return -ENOMEM;
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} else {
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NVT_LOG("create proc/%s Succeeded!\n", NVT_FW_VERSION);
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}
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NVT_proc_baseline_entry = proc_create(NVT_BASELINE, 0444, NULL, &nvt_baseline_fops);
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if (NVT_proc_baseline_entry == NULL) {
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NVT_ERR("create proc/%s Failed!\n", NVT_BASELINE);
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return -ENOMEM;
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} else {
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NVT_LOG("create proc/%s Succeeded!\n", NVT_BASELINE);
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}
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NVT_proc_raw_entry = proc_create(NVT_RAW, 0444, NULL, &nvt_raw_fops);
|
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if (NVT_proc_raw_entry == NULL) {
|
|
NVT_ERR("create proc/%s Failed!\n", NVT_RAW);
|
|
return -ENOMEM;
|
|
} else {
|
|
NVT_LOG("create proc/%s Succeeded!\n", NVT_RAW);
|
|
}
|
|
|
|
NVT_proc_diff_entry = proc_create(NVT_DIFF, 0444, NULL, &nvt_diff_fops);
|
|
if (NVT_proc_diff_entry == NULL) {
|
|
NVT_ERR("create proc/%s Failed!\n", NVT_DIFF);
|
|
return -ENOMEM;
|
|
} else {
|
|
NVT_LOG("create proc/%s Succeeded!\n", NVT_DIFF);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*******************************************************
|
|
Description:
|
|
Novatek touchscreen extra function proc. file node
|
|
deinitial function.
|
|
|
|
return:
|
|
n.a.
|
|
*******************************************************/
|
|
void nvt_extra_proc_deinit(void)
|
|
{
|
|
if (NVT_proc_fw_version_entry != NULL) {
|
|
remove_proc_entry(NVT_FW_VERSION, NULL);
|
|
NVT_proc_fw_version_entry = NULL;
|
|
NVT_LOG("Removed /proc/%s\n", NVT_FW_VERSION);
|
|
}
|
|
|
|
if (NVT_proc_baseline_entry != NULL) {
|
|
remove_proc_entry(NVT_BASELINE, NULL);
|
|
NVT_proc_baseline_entry = NULL;
|
|
NVT_LOG("Removed /proc/%s\n", NVT_BASELINE);
|
|
}
|
|
|
|
if (NVT_proc_raw_entry != NULL) {
|
|
remove_proc_entry(NVT_RAW, NULL);
|
|
NVT_proc_raw_entry = NULL;
|
|
NVT_LOG("Removed /proc/%s\n", NVT_RAW);
|
|
}
|
|
|
|
if (NVT_proc_diff_entry != NULL) {
|
|
remove_proc_entry(NVT_DIFF, NULL);
|
|
NVT_proc_diff_entry = NULL;
|
|
NVT_LOG("Removed /proc/%s\n", NVT_DIFF);
|
|
}
|
|
}
|
|
#endif
|