mirror of
https://github.com/CTCaer/hekate
synced 2024-09-07 08:39:00 +00:00
207 lines
5.7 KiB
C
207 lines
5.7 KiB
C
/*
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* Touch driver for Nintendo Switch's STMicroelectronics FingerTip touch controller
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*
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* Copyright (c) 2018 langerhans
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* Copyright (c) 2018 CTCaer
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <string.h>
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#include "../soc/clock.h"
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#include "../soc/i2c.h"
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#include "../soc/pinmux.h"
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#include "../power/max7762x.h"
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#include "../power/max77620.h"
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#include "../soc/gpio.h"
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#include "../soc/t210.h"
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#include "../utils/util.h"
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#include "touch.h"
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#include "../gfx/gfx.h"
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extern gfx_ctxt_t gfx_ctxt;
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extern gfx_con_t gfx_con;
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#define DPRINTF(...) gfx_printf(&gfx_con, __VA_ARGS__)
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static int touch_command(u8 cmd)
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{
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int err = i2c_send_byte(I2C_3, STMFTS_I2C_ADDR, cmd, 0);
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if (!err)
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return 1;
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// TODO: Check for completion in event loop
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msleep(1);
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return 0;
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}
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static void _touch_process_contact_event(touch_event *event, bool touching)
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{
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event->x = (event->raw[2] << 4) | ((event->raw[4] & STMFTS_MASK_Y_LSB) >> 4);
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// Normally, GUI elements have bigger horizontal estate.
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// Avoid parsing y axis when finger is removed to minimize touch noise.
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if (touching)
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{
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event->y = (event->raw[3] << 4) | (event->raw[4] & STMFTS_MASK_X_MSB);
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event->z = event->raw[5];
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event->fingers = ((event->raw[1] & STMFTS_MASK_TOUCH_ID) >> 4) + 1;
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}
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else
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event->fingers = 0;
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}
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static void _touch_parse_event(touch_event *event)
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{
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event->type = event->raw[1] & STMFTS_MASK_EVENT_ID;
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switch (event->type)
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{
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case STMFTS_EV_MULTI_TOUCH_ENTER:
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case STMFTS_EV_MULTI_TOUCH_MOTION:
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_touch_process_contact_event(event, true);
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if (event->z > 52) // Discard noisy hover touch.
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event->touch = true;
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else
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{
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event->touch = false;
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event->type = STMFTS_EV_MULTI_TOUCH_LEAVE;
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}
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break;
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case STMFTS_EV_MULTI_TOUCH_LEAVE:
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event->touch = false;
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_touch_process_contact_event(event, false);
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break;
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case STMFTS_EV_NO_EVENT:
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if (event->touch)
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event->type = STMFTS_EV_MULTI_TOUCH_MOTION;
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break;
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default:
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if (event->touch && event->raw[0] == STMFTS_EV_MULTI_TOUCH_MOTION)
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event->type = STMFTS_EV_MULTI_TOUCH_MOTION;
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else
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event->type = STMFTS_EV_MULTI_TOUCH_LEAVE;
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}
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// gfx_con_setpos(&gfx_con, 0, 300);
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// DPRINTF("x = %d \ny = %d \nz: %d \n", event->x, event->y, event->z);
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// DPRINTF("0 = %02X\n1 = %02x\n2 = %02x\n3 = %02x\n", event->raw[0], event->raw[1], event->raw[2], event->raw[3]);
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// DPRINTF("4 = %02X\n5 = %02x\n6 = %02x\n7 = %02x\n", event->raw[4], event->raw[5], event->raw[6], event->raw[7]);
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}
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void touch_poll(touch_event *event)
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{
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i2c_recv_buf_small(event->raw, 8, I2C_3, STMFTS_I2C_ADDR, STMFTS_LATEST_EVENT);
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_touch_parse_event(event);
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}
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touch_event touch_poll_wait()
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{
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touch_event event;
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do
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{
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touch_poll(&event);
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} while (event.type != STMFTS_EV_MULTI_TOUCH_LEAVE);
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return event;
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}
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touch_info touch_get_info()
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{
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touch_info info;
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u8 buf[8];
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memset(&buf, 0, 8);
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i2c_recv_buf_small(buf, 8, I2C_3, STMFTS_I2C_ADDR, STMFTS_READ_INFO);
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info.chip_id = buf[0] << 8 | buf[1];
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info.fw_ver = buf[2] << 8 | buf[3];
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info.config_id = buf[4];
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info.config_ver = buf[5];
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//DPRINTF("ID: %04X, FW Ver: %d.%02d\nCfg ID: %02x, Cfg Ver: %d\n",
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// info.chip_id, info.fw_ver >> 8, info.fw_ver & 0xFF, info.config_id, info.config_ver);
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return info;
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}
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int touch_power_on()
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{
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// Configure touchscreen GPIO.
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PINMUX_AUX(PINMUX_AUX_DAP4_SCLK) = PINMUX_PULL_DOWN | 3;
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gpio_config(GPIO_PORT_J, GPIO_PIN_7, GPIO_MODE_GPIO);
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gpio_output_enable(GPIO_PORT_J, GPIO_PIN_7, GPIO_OUTPUT_ENABLE);
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gpio_write(GPIO_PORT_J, GPIO_PIN_7, GPIO_HIGH);
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// IRQ and more.
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// PINMUX_AUX(PINMUX_AUX_TOUCH_INT) = PINMUX_INPUT_ENABLE | PINMUX_TRISTATE | PINMUX_PULL_UP | 3;
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// gpio_config(GPIO_PORT_X, GPIO_PIN_1, GPIO_MODE_GPIO);
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// gpio_write(GPIO_PORT_X, GPIO_PIN_1, GPIO_LOW);
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// Configure Touscreen and GCAsic shared GPIO.
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PINMUX_AUX(PINMUX_AUX_CAM_I2C_SDA) = PINMUX_TRISTATE | PINMUX_INPUT_ENABLE | PINMUX_PULL_UP | 3;
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PINMUX_AUX(PINMUX_AUX_CAM_I2C_SCL) = PINMUX_INPUT_ENABLE | 1;
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gpio_config(GPIO_PORT_S, GPIO_PIN_3, GPIO_MODE_GPIO);
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// Initialize I2C3.
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pinmux_config_i2c(I2C_3);
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clock_enable_i2c(I2C_3);
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i2c_init(I2C_3);
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// Enables LDO6 for touchscreen VDD/AVDD supply
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max77620_regulator_set_volt_and_flags(REGULATOR_LDO6, 2900000, MAX77620_POWER_MODE_NORMAL);
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i2c_send_byte(I2C_5, MAX77620_I2C_ADDR, MAX77620_REG_LDO6_CFG2,
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MAX77620_LDO_CFG2_ADE_ENABLE | (3 << 3) | (MAX77620_POWER_MODE_NORMAL << MAX77620_LDO_POWER_MODE_SHIFT));
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msleep(20);
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// Initialize touchscreen module.
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if (touch_command(STMFTS_SYSTEM_RESET))
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return 0;
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if (touch_command(STMFTS_SLEEP_OUT))
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return 0;
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if (touch_command(STMFTS_MS_CX_TUNING))
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return 0;
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if (touch_command(STMFTS_SS_CX_TUNING))
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return 0;
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if (touch_command(STMFTS_FULL_FORCE_CALIBRATION))
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return 0;
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if (touch_command(STMFTS_MS_MT_SENSE_ON))
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return 0;
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if (touch_command(STMFTS_SS_HOVER_SENSE_OFF))
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return 0;
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return 1;
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}
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void touch_power_off()
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{
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touch_command(STMFTS_SLEEP_IN);
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// Disable touchscreen power.
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gpio_write(GPIO_PORT_J, GPIO_PIN_7, GPIO_LOW);
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// Disables LDO6 for touchscreen VDD, AVDD supply
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max77620_regulator_enable(REGULATOR_LDO6, 0);
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i2c_send_byte(I2C_5, MAX77620_I2C_ADDR, MAX77620_REG_LDO6_CFG2,
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MAX77620_LDO_CFG2_ADE_ENABLE | (2 << 3) | (MAX77620_POWER_MODE_NORMAL << MAX77620_LDO_POWER_MODE_SHIFT));
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clock_disable_i2c(I2C_3);
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} |