455 lines
10 KiB
C
455 lines
10 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2019 MediaTek Inc.
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*/
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#include "ilitek_v3.h"
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struct touch_bus_info {
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struct i2c_driver bus_driver;
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struct ilitek_hwif_info *hwif;
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};
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struct ilitek_ts_data *ilits;
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#define RW_SYNC 0
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#define R_ONLY 1
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#define W_ONLY 2
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#if I2C_DMA_TRANSFER
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static unsigned char *ilitek_dma_va;
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static dma_addr_t ilitek_dma_pa;
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#define DMA_VA_BUFFER 4096
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static int dma_i2c_alloc(struct i2c_client *client)
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{
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if (client != NULL) {
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client->dev.coherent_dma_mask = DMA_BIT_MASK(32);
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ilitek_dma_va = (u8 *)dmam_alloc_coherent(client->dev, DMA_VA_BUFFER, &ilitek_dma_pa, GFP_KERNEL);
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if (ERR_ALLOC_MEM(ilitek_dma_va)) {
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ILI_ERR("Allocate DMA I2C Buffer failed\n");
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return -ENOMEM;
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}
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memset(ilitek_dma_va, 0, DMA_VA_BUFFER);
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client->ext_flag |= I2C_DMA_FLAG;
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return 0;
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}
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ILI_ERR("client is NULL, allocated dma i2c failed\n");
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return -ENODEV;
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}
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#endif
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static int core_i2c_write(void *buf, int len)
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{
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int ret = 0;
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u8 *txbuf = (u8 *)buf;
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u8 check_sum = 0;
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u8 *mpbuf = NULL;
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struct i2c_msg msgs[] = {
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{
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.addr = ilits->i2c->addr,
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.flags = 0, /* write flag. */
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.len = len,
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.buf = txbuf,
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},
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};
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#if I2C_DMA_TRANSFER
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if (len > 8) {
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msgs[0].addr = (ilits->client->addr & I2C_MASK_FLAG);
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msgs[0].ext_flag = (ilits->client->ext_flag | I2C_ENEXT_FLAG | I2C_DMA_FLAG);
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memcpy(ilitek_dma_va, txbuf, len);
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msgs[0].buf = (u8 *)ilitek_dma_pa;
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}
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#endif
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/*
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* NOTE: If TP driver is doing MP test and commanding 0xF1 to FW, we add a checksum
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* to the last index and plus 1 with size.
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*/
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if (atomic_read(&ilits->mp_stat) && txbuf[0] == P5_X_SET_CDC_INIT) {
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check_sum = ili_calc_packet_checksum(txbuf, len);
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mpbuf = kcalloc(len + 1, sizeof(u8), GFP_KERNEL);
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if (ERR_ALLOC_MEM(mpbuf)) {
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ILI_ERR("Failed to allocate mpbuf mem\n");
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return -ENOMEM;
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}
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ipio_memcpy(mpbuf, txbuf, len, msgs[0].len);
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mpbuf[len] = check_sum;
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msgs[0].buf = mpbuf;
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ili_dump_data(mpbuf, 8, len+1, 0, "mp cdc cmd");
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msgs[0].len = len + 1;
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}
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if (i2c_transfer(ilits->i2c->adapter, msgs, 1) != 1)
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ret = -1;
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ipio_kfree((void **)&mpbuf);
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return ret;
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}
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static int core_i2c_read(void *buf, int len)
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{
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int ret;
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u8 *rxbuf = (u8 *)buf;
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struct i2c_msg msgs[] = {
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{
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.addr = ilits->i2c->addr,
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.flags = I2C_M_RD, /* read flag. */
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.len = len,
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.buf = rxbuf,
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},
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};
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#if I2C_DMA_TRANSFER
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if (len > 8) {
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msgs[0].addr = (ilits->client->addr & I2C_MASK_FLAG);
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msgs[0].ext_flag = (ilits->client->ext_flag | I2C_ENEXT_FLAG | I2C_DMA_FLAG);
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msgs[0].buf = (u8 *)ilitek_dma_pa;
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} else {
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msgs[0].buf = rxbuf;
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}
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#endif
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ret = i2c_transfer(ilits->i2c->adapter, msgs, 1);
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#if I2C_DMA_TRANSFER
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if (len > 8)
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memcpy(rxbuf, ilitek_dma_va, len);
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#endif
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/*
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* If i2c_transfer is ok (must return 1 because only sends one msg),
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* return #bytes transferred, else error code.
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*/
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return (ret == 1) ? len : ret;
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}
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static int ilitek_i2c_write(void *buf, int len)
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{
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int ret = 0;
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if (len == 0) {
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ILI_ERR("i2c write len is invalid\n");
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return -EINVAL;
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}
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ret = core_i2c_write(buf, len);
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if (ret < 0) {
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if (atomic_read(&ilits->tp_reset) == START) {
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ret = 0;
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goto out;
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}
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ILI_ERR("i2c write error, ret = %d\n", ret);
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}
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out:
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return ret;
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}
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static int ilitek_i2c_read(void *buf, int len)
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{
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int ret = 0;
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if (len == 0) {
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ILI_ERR("i2c read len is invalid\n");
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return -EINVAL;
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}
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ret = core_i2c_read(buf, len);
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if (ret < 0) {
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if (atomic_read(&ilits->tp_reset) == START) {
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ret = 0;
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goto out;
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}
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ILI_ERR("i2c read error, ret = %d\n", ret);
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}
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out:
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return ret;
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}
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static int ili_i2c_pll_clk_wakeup(void)
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{
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int ret = 0;
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u8 wakeup = 0xA3;
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#if (PLL_CLK_WAKEUP_TP_RESUME == ENABLE)
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if (ilits->pll_clk_wakeup == true) {
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#else
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if ((ilits->pll_clk_wakeup == true) && (ilits->tp_suspend == true)) {
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#endif
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ret = ilitek_i2c_write(&wakeup, sizeof(wakeup));
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if (ret < 0)
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ILI_ERR("i2c write dummy cmd error\n");
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}
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return ret;
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}
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static int ili_i2c_wrapper(u8 *txbuf, u32 wlen, u8 *rxbuf, u32 rlen, bool spi_irq, bool i2c_irq)
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{
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int ret = 0, operate = -1;
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if (wlen > 0) {
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if (ERR_ALLOC_MEM(txbuf)) {
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ILI_ERR("txbuf is null\n");
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return -ENOMEM;
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}
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}
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if (rlen > 0) {
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if (ERR_ALLOC_MEM(rxbuf)) {
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ILI_ERR("rxbuf is null\n");
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return -ENOMEM;
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}
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}
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if (wlen > 0 && rlen > 0)
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operate = RW_SYNC;
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else if (wlen > 0 && !rlen)
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operate = W_ONLY;
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else
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operate = R_ONLY;
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if (ilits->int_pulse)
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ilits->detect_int_stat = ili_ic_check_int_pulse;
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else
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ilits->detect_int_stat = ili_ic_check_int_level;
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if (i2c_irq)
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atomic_set(&ilits->cmd_int_check, ENABLE);
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switch (operate) {
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case RW_SYNC:
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ret = ilitek_i2c_write(txbuf, wlen);
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if (ret < 0) {
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ILI_ERR("i2c-wrapper write error\n");
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break;
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}
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if (i2c_irq) {
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if (ilits->detect_int_stat(false) < 0) {
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ILI_ERR("ERROR! Check INT timeout\n");
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ret = -ETIME;
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break;
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}
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} else {
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msleep(1);
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}
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ret = ilitek_i2c_read(rxbuf, rlen);
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if (ret < 0) {
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ILI_ERR("i2c-wrapper read error\n");
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break;
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}
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break;
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case W_ONLY:
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ret = ili_i2c_pll_clk_wakeup();
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if (ret < 0) {
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ILI_ERR("i2c-wrapper dummy cmd write error\n");
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}
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ret = ilitek_i2c_write(txbuf, wlen);
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if (ret < 0) {
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ILI_ERR("i2c-wrapper write error\n");
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break;
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}
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break;
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case R_ONLY:
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if (i2c_irq) {
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if (ilits->detect_int_stat(false) < 0) {
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ILI_ERR("ERROR! Check INT timeout\n");
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ret = -ETIME;
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break;
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}
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}
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ret = ilitek_i2c_read(rxbuf, rlen);
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if (ret < 0) {
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ILI_ERR("i2c-wrapper read error\n");
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break;
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}
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break;
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default:
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ILI_ERR("Unknown ts-i2c operation\n");
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ret = -EINVAL;
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break;
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}
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if (i2c_irq)
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atomic_set(&ilits->cmd_int_check, DISABLE);
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return ret;
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}
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int ili_core_spi_setup(int num)
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{
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ILI_ERR("Not support this interface\n");
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return 0;
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}
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static int ilitek_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
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{
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struct touch_bus_info *info =
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container_of(to_i2c_driver(i2c->dev.driver),
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struct touch_bus_info, bus_driver);
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ILI_INFO("ilitek i2c probe\n");
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if (!i2c) {
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ILI_ERR("i2c client is NULL\n");
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return -ENODEV;
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}
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if (i2c->addr != TDDI_I2C_ADDR) {
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i2c->addr = TDDI_I2C_ADDR;
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ILI_INFO("i2c addr doesn't be set up, use default : 0x%x\n", i2c->addr);
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}
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if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_I2C)) {
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ILI_ERR("i2c functions are not supported!\n");
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return -ENODEV;
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}
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ilits = devm_kzalloc(&i2c->dev, sizeof(struct ilitek_ts_data), GFP_KERNEL);
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if (ERR_ALLOC_MEM(ilits)) {
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ILI_ERR("Failed to allocate ts memory, %ld\n", PTR_ERR(ilits));
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return -ENOMEM;
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}
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/* Used for receiving touch data only, do not mix up with others. */
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ilits->tr_buf = kzalloc(TR_BUF_SIZE, GFP_ATOMIC);
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if (ERR_ALLOC_MEM(ilits->tr_buf)) {
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ILI_ERR("failed to allocate touch report buffer\n");
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return -ENOMEM;
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}
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ilits->gcoord = kzalloc(sizeof(struct gesture_coordinate), GFP_KERNEL);
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if (ERR_ALLOC_MEM(ilits->gcoord)) {
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ILI_ERR("Failed to allocate gresture coordinate buffer\n");
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return -ENOMEM;
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}
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ilits->i2c = i2c;
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ilits->spi = NULL;
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ilits->dev = &i2c->dev;
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ilits->hwif = info->hwif;
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ilits->phys = "I2C";
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ilits->wrapper = ili_i2c_wrapper;
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ilits->detect_int_stat = ili_ic_check_int_pulse;
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ilits->int_pulse = true;
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ilits->mp_retry = false;
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#if I2C_DMA_TRANSFER
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if (dma_i2c_alloc(ilits->i2c) < 0)
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ILI_ERR("Failed to alllocate DMA mem %ld\n", PTR_ERR(ilits->i2c));
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#endif
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ilits->actual_tp_mode = P5_X_FW_AP_MODE;
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ilits->tp_data_mode = AP_MODE;
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if (TDDI_RST_BIND)
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ilits->reset = TP_IC_WHOLE_RST;
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else
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ilits->reset = TP_HW_RST_ONLY;
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ilits->rst_edge_delay = 100;
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ilits->fw_open = FILP_OPEN;
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ilits->fw_upgrade_mode = UPGRADE_FLASH;
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ilits->mp_move_code = ili_move_mp_code_flash;
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ilits->gesture_move_code = ili_move_gesture_code_flash;
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ilits->esd_recover = ili_wq_esd_i2c_check;
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ilits->ges_recover = ili_touch_esd_gesture_flash;
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ilits->gesture_mode = DATA_FORMAT_GESTURE_INFO;
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ilits->gesture_demo_ctrl = DISABLE;
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ilits->wtd_ctrl = OFF;
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ilits->report = ENABLE;
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ilits->netlink = DISABLE;
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ilits->dnp = DISABLE;
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ilits->irq_tirgger_type = IRQF_TRIGGER_FALLING;
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ilits->info_from_hex = DISABLE;
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ilits->wait_int_timeout = AP_INT_TIMEOUT;
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#if ENABLE_GESTURE
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ilits->gesture = DISABLE;
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ilits->ges_sym.double_tap = DOUBLE_TAP;
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ilits->ges_sym.alphabet_line_2_top = ALPHABET_LINE_2_TOP;
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ilits->ges_sym.alphabet_line_2_bottom = ALPHABET_LINE_2_BOTTOM;
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ilits->ges_sym.alphabet_line_2_left = ALPHABET_LINE_2_LEFT;
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ilits->ges_sym.alphabet_line_2_right = ALPHABET_LINE_2_RIGHT;
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ilits->ges_sym.alphabet_m = ALPHABET_M;
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ilits->ges_sym.alphabet_w = ALPHABET_W;
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ilits->ges_sym.alphabet_c = ALPHABET_C;
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ilits->ges_sym.alphabet_E = ALPHABET_E;
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ilits->ges_sym.alphabet_V = ALPHABET_V;
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ilits->ges_sym.alphabet_O = ALPHABET_O;
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ilits->ges_sym.alphabet_S = ALPHABET_S;
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ilits->ges_sym.alphabet_Z = ALPHABET_Z;
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ilits->ges_sym.alphabet_V_down = ALPHABET_V_DOWN;
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ilits->ges_sym.alphabet_V_left = ALPHABET_V_LEFT;
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ilits->ges_sym.alphabet_V_right = ALPHABET_V_RIGHT;
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ilits->ges_sym.alphabet_two_line_2_bottom = ALPHABET_TWO_LINE_2_BOTTOM;
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ilits->ges_sym.alphabet_F = ALPHABET_F;
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ilits->ges_sym.alphabet_AT = ALPHABET_AT;
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#endif
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return info->hwif->plat_probe();
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}
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static int ilitek_i2c_remove(struct i2c_client *i2c)
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{
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ILI_INFO();
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return 0;
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}
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static const struct i2c_device_id tp_i2c_id[] = {
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{TDDI_DEV_ID, 0},
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{},
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};
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int ili_interface_dev_init(struct ilitek_hwif_info *hwif)
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{
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struct touch_bus_info *info;
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info = kzalloc(sizeof(*info), GFP_KERNEL);
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if (!info) {
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ILI_ERR("faied to allocate i2c_driver\n");
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return -ENOMEM;
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}
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if (hwif->bus_type != BUS_I2C) {
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ILI_ERR("Not I2C dev\n");
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ipio_kfree((void **)&info);
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return -EINVAL;
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}
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hwif->info = info;
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info->bus_driver.driver.name = hwif->name;
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info->bus_driver.driver.owner = hwif->owner;
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info->bus_driver.driver.of_match_table = hwif->of_match_table;
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info->bus_driver.driver.pm = hwif->pm;
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info->bus_driver.probe = ilitek_i2c_probe;
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info->bus_driver.remove = ilitek_i2c_remove;
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info->bus_driver.id_table = tp_i2c_id;
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info->hwif = hwif;
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return i2c_add_driver(&info->bus_driver);
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}
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void ili_interface_dev_exit(struct ilitek_ts_data *ts)
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{
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struct touch_bus_info *info = (struct touch_bus_info *)ilits->hwif->info;
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ILI_INFO("remove i2c dev\n");
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i2c_del_driver(&info->bus_driver);
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ipio_kfree((void **)&info);
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}
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