1
0
Fork 0
mirror of https://github.com/CTCaer/hekate.git synced 2024-10-31 07:51:45 +00:00
hekate/bdk/input/touch.c

461 lines
No EOL
11 KiB
C

/*
* Touch driver for Nintendo Switch's STM FingerTip S (4CD60D) touch controller
*
* Copyright (c) 2018 langerhans
* Copyright (c) 2018-2020 CTCaer
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
*/
#include <string.h>
#include <soc/clock.h>
#include <soc/i2c.h>
#include <soc/pinmux.h>
#include <power/max7762x.h>
#include <soc/gpio.h>
#include <soc/t210.h>
#include <utils/btn.h>
#include <utils/util.h>
#include "touch.h"
#include <gfx_utils.h>
#define DPRINTF(...) gfx_printf(__VA_ARGS__)
static touch_panel_info_t _panels[] =
{
{ 0, 1, 1, 1, "NISSHA NFT-K12D" },
{ 1, 0, 1, 1, "GiS GGM6 B2X" },
{ 2, 0, 0, 0, "NISSHA NBF-K9A" },
{ 3, 1, 0, 0, "GiS 5.5\"" },
{ 4, 0, 0, 1, "Samsung BH2109" },
{ -1, 1, 0, 1, "GiS VA 6.2\"" }
};
static int touch_command(u8 cmd, u8 *buf, u8 size)
{
int res = i2c_send_buf_small(I2C_3, STMFTS_I2C_ADDR, cmd, buf, size);
if (!res)
return 1;
return 0;
}
static int touch_read_reg(u8 *cmd, u32 csize, u8 *buf, u32 size)
{
int res = i2c_send_buf_small(I2C_3, STMFTS_I2C_ADDR, cmd[0], &cmd[1], csize - 1);
if (res)
res = i2c_recv_buf(buf, size, I2C_3, STMFTS_I2C_ADDR);
if (!res)
return 1;
return 0;
}
static int touch_wait_event(u8 event, u8 status, u32 timeout, u8 *buf)
{
u32 timer = get_tmr_ms() + timeout;
while (true)
{
u8 tmp[8] = {0};
i2c_recv_buf_small(tmp, 8, I2C_3, STMFTS_I2C_ADDR, STMFTS_READ_ONE_EVENT);
if (tmp[1] == event && tmp[2] == status)
{
if (buf)
memcpy(buf, &tmp[3], 5);
return 0;
}
if (get_tmr_ms() > timer)
return 1;
}
}
#define X_REAL_MAX 1264
#define Y_REAL_MAX 704
#define EDGE_OFFSET 15
static void _touch_compensate_limits(touch_event *event, bool touching)
{
event->x = MAX(event->x, EDGE_OFFSET);
event->x = MIN(event->x, X_REAL_MAX);
event->x -= EDGE_OFFSET;
u32 x_adj = (1280 * 1000) / (X_REAL_MAX - EDGE_OFFSET);
event->x = ((u32)event->x * x_adj) / 1000;
if (touching)
{
event->y = MAX(event->y, EDGE_OFFSET);
event->y = MIN(event->y, Y_REAL_MAX);
event->y -= EDGE_OFFSET;
u32 y_adj = (720 * 1000) / (Y_REAL_MAX - EDGE_OFFSET);
event->y = ((u32)event->y * y_adj) / 1000;
}
}
static void _touch_process_contact_event(touch_event *event, bool touching)
{
event->x = (event->raw[2] << 4) | ((event->raw[4] & STMFTS_MASK_Y_LSB) >> 4);
// Normally, GUI elements have bigger horizontal estate.
// Avoid parsing y axis when finger is removed to minimize touch noise.
if (touching)
{
event->y = (event->raw[3] << 4) | (event->raw[4] & STMFTS_MASK_X_MSB);
event->z = event->raw[5] | (event->raw[6] << 8);
event->z = event->z << 6;
u16 tmp = 0x40;
if ((event->raw[7] & 0x3F) != 1 && (event->raw[7] & 0x3F) != 0x3F)
tmp = event->raw[7] & 0x3F;
event->z /= tmp + 0x40;
event->fingers = ((event->raw[1] & STMFTS_MASK_TOUCH_ID) >> 4) + 1;
}
else
event->fingers = 0;
_touch_compensate_limits(event, touching);
}
static void _touch_parse_event(touch_event *event)
{
event->type = event->raw[1] & STMFTS_MASK_EVENT_ID;
switch (event->type)
{
case STMFTS_EV_MULTI_TOUCH_ENTER:
case STMFTS_EV_MULTI_TOUCH_MOTION:
_touch_process_contact_event(event, true);
if (event->z < 255) // Reject palm rest.
event->touch = true;
else
{
event->touch = false;
event->type = STMFTS_EV_MULTI_TOUCH_LEAVE;
}
break;
case STMFTS_EV_MULTI_TOUCH_LEAVE:
event->touch = false;
_touch_process_contact_event(event, false);
break;
case STMFTS_EV_NO_EVENT:
if (event->touch)
event->type = STMFTS_EV_MULTI_TOUCH_MOTION;
break;
default:
if (event->touch && event->raw[0] == STMFTS_EV_MULTI_TOUCH_MOTION)
event->type = STMFTS_EV_MULTI_TOUCH_MOTION;
else
event->type = STMFTS_EV_MULTI_TOUCH_LEAVE;
}
// gfx_con_setpos(0, 300);
// DPRINTF("x = %d \ny = %d \nz = %d \n", event->x, event->y, event->z);
// DPRINTF("0 = %02X\n1 = %02X\n2 = %02X\n3 = %02X\n", event->raw[0], event->raw[1], event->raw[2], event->raw[3]);
// DPRINTF("4 = %02X\n5 = %02X\n6 = %02X\n7 = %02X\n", event->raw[4], event->raw[5], event->raw[6], event->raw[7]);
}
void touch_poll(touch_event *event)
{
i2c_recv_buf_small(event->raw, 8, I2C_3, STMFTS_I2C_ADDR, STMFTS_LATEST_EVENT);
_touch_parse_event(event);
}
touch_event touch_poll_wait()
{
touch_event event;
do
{
touch_poll(&event);
} while (event.type != STMFTS_EV_MULTI_TOUCH_LEAVE);
return event;
}
touch_info touch_get_info()
{
touch_info info;
u8 buf[8];
memset(&buf, 0, 8);
i2c_recv_buf_small(buf, 8, I2C_3, STMFTS_I2C_ADDR, STMFTS_READ_INFO);
info.chip_id = buf[0] << 8 | buf[1];
info.fw_ver = buf[2] << 8 | buf[3];
info.config_id = buf[4];
info.config_ver = buf[5];
//DPRINTF("ID: %04X, FW Ver: %d.%02d\nCfg ID: %02X, Cfg Ver: %d\n",
// info.chip_id, info.fw_ver >> 8, info.fw_ver & 0xFF, info.config_id, info.config_ver);
return info;
}
touch_panel_info_t *touch_get_panel_vendor()
{
u8 buf[5] = {0};
u8 cmd = STMFTS_VENDOR_GPIO_STATE;
static touch_panel_info_t panel_info = { -2, 0, 0, 0, ""};
if (touch_command(STMFTS_VENDOR, &cmd, 1))
return NULL;
if (touch_wait_event(STMFTS_EV_VENDOR, STMFTS_VENDOR_GPIO_STATE, 2000, buf))
return NULL;
for (u32 i = 0; i < ARRAY_SIZE(_panels); i++)
{
touch_panel_info_t *panel = &_panels[i];
if (buf[0] == panel->gpio0 && buf[1] == panel->gpio1 && buf[2] == panel->gpio2)
return panel;
}
// Touch panel not found, return current gpios.
panel_info.gpio0 = buf[0];
panel_info.gpio1 = buf[1];
panel_info.gpio2 = buf[2];
return &panel_info;
}
int touch_get_fw_info(touch_fw_info_t *fw)
{
u8 buf[8] = {0};
memset(fw, 0, sizeof(touch_fw_info_t));
// Get fw address info.
u8 cmd[3] = { STMFTS_RW_FRAMEBUFFER_REG, 0, 0x60 };
int res = touch_read_reg(cmd, 3, buf, 3);
if (!res)
{
// Get fw info.
cmd[1] = buf[2]; cmd[2] = buf[1];
res = touch_read_reg(cmd, 3, buf, 8);
if (!res)
{
fw->fw_id = (buf[1] << 24) | (buf[2] << 16) | (buf[3] << 8) | buf[4];
fw->ftb_ver = (buf[6] << 8) | buf[5];
}
cmd[2]++;
res = touch_read_reg(cmd, 3, buf, 8);
if (!res)
fw->fw_rev = (buf[7] << 8) | buf[6];
}
return res;
}
int touch_sys_reset()
{
u8 cmd[3] = { 0, 0x28, 0x80 }; // System reset cmd.
for (u8 retries = 0; retries < 3; retries++)
{
if (touch_command(STMFTS_WRITE_REG, cmd, 3))
{
msleep(10);
continue;
}
msleep(10);
if (touch_wait_event(STMFTS_EV_CONTROLLER_READY, 0, 20, NULL))
continue;
else
return 0;
}
return 1;
}
int touch_panel_ito_test(u8 *err)
{
int res = 0;
// Reset touchscreen module.
if (touch_sys_reset())
return res;
// Do ITO Production test.
u8 cmd[2] = { 1, 0 };
if (touch_command(STMFTS_ITO_CHECK, cmd, 2))
return res;
u32 timer = get_tmr_ms() + 2000;
while (true)
{
u8 tmp[8] = {0};
i2c_recv_buf_small(tmp, 8, I2C_3, STMFTS_I2C_ADDR, STMFTS_READ_ONE_EVENT);
if (tmp[1] == 0xF && tmp[2] == 0x5)
{
if (err)
{
err[0] = tmp[3];
err[1] = tmp[4];
}
res = 1;
break;
}
if (get_tmr_ms() > timer)
break;
}
// Reset touchscreen module.
touch_sys_reset();
return res;
}
int touch_get_fb_info(u8 *buf)
{
u8 tmp[5];
u8 cmd[3] = { STMFTS_RW_FRAMEBUFFER_REG, 0, 0 };
int res = 0;
for (u32 i = 0; i < 0x10000; i += 4)
{
if (!res)
{
cmd[1] = (i >> 8) & 0xFF;
cmd[2] = i & 0xFF;
memset(tmp, 0xCC, 5);
res = touch_read_reg(cmd, 3, tmp, 5);
memcpy(&buf[i], tmp + 1, 4);
}
}
return res;
}
int touch_sense_enable()
{
// Switch sense mode and enable multi-touch sensing.
u8 cmd = STMFTS_FINGER_MODE;
if (touch_command(STMFTS_SWITCH_SENSE_MODE, &cmd, 1))
return 0;
if (touch_command(STMFTS_MS_MT_SENSE_ON, NULL, 0))
return 0;
if (touch_command(STMFTS_CLEAR_EVENT_STACK, NULL, 0))
return 0;
return 1;
}
int touch_execute_autotune()
{
// Reset touchscreen module.
if (touch_sys_reset())
return 0;
// Trim low power oscillator.
if (touch_command(STMFTS_LP_TIMER_CALIB, NULL, 0))
return 0;
msleep(200);
// Apply Mutual Sense Compensation tuning.
if (touch_command(STMFTS_MS_CX_TUNING, NULL, 0))
return 0;
if (touch_wait_event(STMFTS_EV_STATUS, STMFTS_EV_STATUS_MS_CX_TUNING_DONE, 2000, NULL))
return 0;
// Apply Self Sense Compensation tuning.
if (touch_command(STMFTS_SS_CX_TUNING, NULL, 0))
return 0;
if (touch_wait_event(STMFTS_EV_STATUS, STMFTS_EV_STATUS_SS_CX_TUNING_DONE, 2000, NULL))
return 0;
// Save Compensation data to EEPROM.
if (touch_command(STMFTS_SAVE_CX_TUNING, NULL, 0))
return 0;
if (touch_wait_event(STMFTS_EV_STATUS, STMFTS_EV_STATUS_WRITE_CX_TUNE_DONE, 2000, NULL))
return 0;
return touch_sense_enable();
}
static int touch_init()
{
// Initialize touchscreen module.
if (touch_sys_reset())
return 0;
return touch_sense_enable();
}
int touch_power_on()
{
// Enable LDO6 for touchscreen AVDD supply.
max7762x_regulator_set_voltage(REGULATOR_LDO6, 2900000);
max7762x_regulator_enable(REGULATOR_LDO6, true);
// Configure touchscreen VDD GPIO.
PINMUX_AUX(PINMUX_AUX_DAP4_SCLK) = PINMUX_PULL_DOWN | 1;
gpio_config(GPIO_PORT_J, GPIO_PIN_7, GPIO_MODE_GPIO);
gpio_output_enable(GPIO_PORT_J, GPIO_PIN_7, GPIO_OUTPUT_ENABLE);
gpio_write(GPIO_PORT_J, GPIO_PIN_7, GPIO_HIGH);
// Touscreen IRQ.
// PINMUX_AUX(PINMUX_AUX_TOUCH_INT) = PINMUX_INPUT_ENABLE | PINMUX_TRISTATE | PINMUX_PULL_UP | 3;
// gpio_config(GPIO_PORT_X, GPIO_PIN_1, GPIO_MODE_GPIO);
// gpio_write(GPIO_PORT_X, GPIO_PIN_1, GPIO_LOW);
// Configure Touscreen and GCAsic shared GPIO.
PINMUX_AUX(PINMUX_AUX_CAM_I2C_SDA) = PINMUX_LPDR | PINMUX_INPUT_ENABLE | PINMUX_TRISTATE | PINMUX_PULL_UP | 2;
PINMUX_AUX(PINMUX_AUX_CAM_I2C_SCL) = PINMUX_IO_HV | PINMUX_LPDR | PINMUX_TRISTATE | PINMUX_PULL_DOWN | 2;
gpio_config(GPIO_PORT_S, GPIO_PIN_3, GPIO_MODE_GPIO); // GC detect.
// Initialize I2C3.
pinmux_config_i2c(I2C_3);
clock_enable_i2c(I2C_3);
i2c_init(I2C_3);
// Wait for the touchscreen module to get ready.
touch_wait_event(STMFTS_EV_CONTROLLER_READY, 0, 20, NULL);
// Check for forced boot time calibration.
if (btn_read_vol() == (BTN_VOL_UP | BTN_VOL_DOWN))
{
u8 err[2];
if (touch_panel_ito_test(err))
if (!err[0] && !err[1])
return touch_execute_autotune();
}
// Initialize touchscreen.
u32 retries = 3;
while (retries)
{
if (touch_init())
return 1;
retries--;
}
return 0;
}
void touch_power_off()
{
// Disable touchscreen power.
gpio_write(GPIO_PORT_J, GPIO_PIN_7, GPIO_LOW);
// Disables LDO6 for touchscreen VDD, AVDD supply
max7762x_regulator_enable(REGULATOR_LDO6, false);
clock_disable_i2c(I2C_3);
}